CA1228333A - Sealed gable top carton having a mouthpiece of one piece molding - Google Patents
Sealed gable top carton having a mouthpiece of one piece moldingInfo
- Publication number
- CA1228333A CA1228333A CA000485361A CA485361A CA1228333A CA 1228333 A CA1228333 A CA 1228333A CA 000485361 A CA000485361 A CA 000485361A CA 485361 A CA485361 A CA 485361A CA 1228333 A CA1228333 A CA 1228333A
- Authority
- CA
- Canada
- Prior art keywords
- lid
- gable top
- mouthpiece
- pull tab
- spout
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/72—Contents-dispensing means
- B65D5/74—Spouts
- B65D5/746—Spouts formed separately from the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
- B65D5/06—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
- B65D5/067—Gable-top containers
- B65D5/068—Gable-top containers with supplemental means facilitating the opening, e.g. tear lines, tear tabs
Abstract
ABSTRACT
A gable top carton for containing a beverage or like liquid product is disclosed which comprises a boxlike body having a closed bottom and a double sloping top. The top has an aperture defined in one of its sloping sides for pouring out the contained liquid. Closing this aper-ture is a plastic mouthpiece of one piece construction, which is used or otherwise water tightly attached to the edge portion of the top around the aperture. The mouth-piece includes a lid having a pull tab protruding there-from. The lid can be torn open upon exertion of a pull on the pull tab. Preferably, the pull tab is formed integral with a hook capable of engaging the ridge of the gable top when the lid is torn open, so that the lid may be held fully open as the liquid is poured out.
A gable top carton for containing a beverage or like liquid product is disclosed which comprises a boxlike body having a closed bottom and a double sloping top. The top has an aperture defined in one of its sloping sides for pouring out the contained liquid. Closing this aper-ture is a plastic mouthpiece of one piece construction, which is used or otherwise water tightly attached to the edge portion of the top around the aperture. The mouth-piece includes a lid having a pull tab protruding there-from. The lid can be torn open upon exertion of a pull on the pull tab. Preferably, the pull tab is formed integral with a hook capable of engaging the ridge of the gable top when the lid is torn open, so that the lid may be held fully open as the liquid is poured out.
Description
SEALED GABLE TOP CARTON HAVING A MOUTHPIECE
OF ONE PIECE MOLDING
BACKGROUND OF THE INVENTION
This invention deals generally with packages and more specifically with cartons to be filled with milk, juice or like beverages or other liquid products. Still more specifically, the invention is directed to a carton of the variety known as the gable top, having a double sloping top on a boxlike body, with a mouthpiece on one of the pair of sloping sides through which the contained fig-rid is discharged.
The long practiced method of discharging the liquid from a gable top carton has been to open the sealed ridge of the gable top by forcing its opposite sides away from each other. This practice is objectionable because of the considerable manual effort required. There is a hygienic problem, too, arising from the direct monopoly-lion of the gable top from which the liquid is to repoured out.
In order to remedy these weaknesses, there has been suggested the use of a plastic mouthpiece, portico-laxly in conjunction with cartons for liquors, soy sauce or the like. The mouthpiece is attached to one of the sloping sides of the gable top, so that the sealed ridge of the gable top need not be forced open ire discharging the contained liquid. As heretofore constructed, however, the mouthpiece has been of two piece design, consisting essentially of a spout and a cap. The user has had first to remove the cap, then to proceed to tear off the closure on the spout.
Not only does the prior art mouthpiece of two piece construction demand considerable time and labor for opening, but also its fabrication is costly as it requires two different molds. The assemblage and mounting of the .. 1 12283;~;~
two piece mouthpiece in position on the gable top carton is also not so easy as could be desired.
SUMMARY OF THE INVENTION
-The present invention solves all the noted pro-bless heretofore encountered in the manufacture and use of gable top cartons by providing an entirely novel mouth-piece of one piece construction.
Stated briefly, the invention provides a gable top carton for containing a liquid product, comprising a boxlike body having a closed bottom, and a sealed gable top closing the top end of the boxlike body. The gable top has a pair of sloping sides one of which has an aver-lure defined therein. Water tightly closing this aperture is a mouthpiece of unitary construction including a lid with a pull tab projecting therefrom.
The mouthpiece of the foregoing construction can be a one piece injection molding of a plastic. In use, then, the lid can be torn open upon exertion of a pull on the pull tab. Preferably, the pull tab is formed integral with a hook which, when the lid is torn open, can engage the sealed ridge of the gable top for holding the lid open. After a desired quantity of the liquid is poured out, the hook may be disengaged from the ridge, and the lid may be closed and held closed until the next disk charge from the carton.
Two basic configurations are possible within the broad teaching hereof. One has a flanged, substantially tubular spout, the outer end of which is closed by the wearable lid. The flange on the inner end of the spout is fused internally to the edge portion of the gable top de-fining the aperture. The other takes the form of a flat plate attached to the outside surface of the edge portion of the gable top. Either way, the lid is readily openable by pulling the pull tab, as then the lid is partly torn i228;~33 off the spout or the gable top. There is absolutely no need for touching those parts of the mouthpiece or the carton with which the liquid is to contact while being poured out. Furthermore, partly torn open and left hingedly coupled to the rest of the mouthpiece, the lid does not interfere with the discharge of the liquid as the hook on its distal end can be engaged with the ridge of the gable top to hold the lid fully open.
It will of course be seen that the mouthpiece of unitary construction in accordance with the invention is much easier to fabricate and less costly than that of two piece design in accordance with the prior art. The mount-in of the mouthpiece in position on the gable top is also easy, as it is readily fusible, either thermally or ultra-tonically, to the paper board of which the carton is made.
The gable top carton constructed in accordance with the invention is suitable for as a package for milk, juice or the like. The cartons for such beverages are used up in comparatively short periods of time after being opened. They are usually not opened or closed too ire-quaintly, nor need they be held closed too tightly. The improved mouthpiece hereby proposed is highly suitable for use on such cartons, being simple in construction, in-expensive of manufacture, easy of use, and hygienically favorable.
The above and other features and advantages of this invention and the manner of realizing them will be-come more apparent, and the invention itself will best be understood, from a study of the following description and appended claims, with reference had to the attached draw-ins showing some preferable embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a preferred form of the gable top carton constructed in accordance with the .. 3 12283~3 invention;
FIG. 2 is an enlarged, fragmentary vertical sea-lion through the gable top carton of FIG. 1, showing in particular the mouthpiece on the gable top of the carton;
FIG. 3 is a longitudinal axial section through the mouthpiece of the gable top carton of FIG. l;
FIG. 4 is a top plan of the mouthpiece of the gable top carton of FIG. l;
FIG. 5 is a rear elevation of the mouthpiece, as seen from the left hand side of FIGS. 3 and 4;
FIG. 6 is a front elevation of the mouthpiece, as seen from the right hand side of FIGS. 3 and 4;
FIG. 7 is a view similar to FIG. 3 but showing a slight modification of the mouthpiece;
FIG. 8 is a perspective view of another example of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 9 is a longitudinal axial section through the mouthpiece of FIG. 8;
FIG. 10 is a view similar to FIG. 9 but explant Tory of how the wearable lid of the FIG. 8 mouthpiece is prevented from being depressed too far into the spout;
FIG. 11 is a perspective view of still another example of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 12 is a longitudinal axial section through the mouthpiece of FIG. 11;
FIG. 13 is a view similar to FIG. 12 but explant Tory of how the wearable lid of the FIG. 11 mouthpiece is prevented from being depressed too far into the spout;
FIG. 14 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 15 is a longitudinal axial section through the mouthpiece of FIG. 14;
FIG. 16 is a perspective view of a slight mod-ligation of the FIG. 14 mouthpiece;
FIG. 17 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 18 is a longitudinal axial section through the mouthpiece of FIG. 17;
FIG. 19 is a rear elevation of the mouthpiece of FIG. 17, as seen from the left hand side of FIG. 18;
FIG. 20 is a view similar to FIG. 19 but showing a slight modification of the FIG. 17 mouthpiece;
FIG. 21 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 22 is a longitudinal axial section through the mouthpiece of FIG. 21;
FIG. 23 is a front elevation of the mouthpiece of FIG. 21, as seen from the right hand side of FIG. 22;
FIG. 24 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. 1, the mouthpiece combining the features of the FIGS. 17 and 21 mouthpieces;
FIG. 25 is a fragmentary vertical section through a gable top carton incorporating a different form of the mouthpiece in accordance with the invention;
FIG. 26 is a top plan view of the mouthpiece of the gable top carton of FIG. 25; and FIG. 27 is a side elevation of the mouthpiece of the gable top carton of FIG. 25.
DESCRIPTION OF TUB PREFERRED EMBODIMENTS
The gable top carton in accordance with the in-mention is shown in its entirety in FIG. 1 of the attached drawings and therein generally designated 20. Typically made of paper board, the carton 20 includes a boxlike body 22 having a conventionally closed bottom 24. At the top . 5 I2283~33 of the boxlike body 22 is a gable top 26 in the form of a double sloping roof, having a pair of oppositely sloping sides 28 with a sealed ridge 30 there between, as will be seen also from FIG. 2. One of the sloping sides 28 of the S gable top 26 has an aperture 32 defined approximately eon-tally therein. The aperture 32 is water tightly closed by a mouthpiece 34 forming the gist of the present invention.
The mouthpiece 34 is a one piece molding of polyethylene, polypropylene, or like plastic material.
As illustrated in detail in FIGS. 2 through 6, the mouthpiece 34 has a substantially tubular spout 36 protruding outwardly from the aperture 32 in the gable top 26. The spout 36 is open at its inner end to the interior of the carton 20 and has an outer end closed by a wearable lid 38. A pull tab 40 extends outwardly or upwardly from the lid 38 and terminates in a hook 42 oriented toward the ridge 30 of the gable top 26.
Protruding from the pull tab 40, in a direction away from the gable top ridge 30, is a limit stop 44 engage able, when the lid 38 is reclosed after having been torn open, with the outer end of the spout 36 for prevent-in the lid from being depressed too far into the spout.
The limit stop 44 is further effective to reinforce the pull tab 40 and to add to its rigidity. The limit stop 44 should not significantly protrude beyond the spout 36 in order to avoid interference with ultrasonic or thermal fusing means to be explained presently. Preferably, the limit stop 44 should be spaced a slight distance from the lid 38 in order to positively hold the lid reclosed after being torn open. This spacing may be approximately equal to the thickness of the lid 38.
The mouthpiece 34 is further formed to include a mounting flange 46 on the inner end of the spout 36. The mounting flange 46 is water tightly fused to the inside surface of the edge portion of the gable top 26 bounding the aperture 32.
~228~33 Additionally, the mouthpiece 34 has a plurality of, typically three or four, retainer lugs 48 projecting laterally from the spout 36 in circumferential spaced apart positions thereon. These retainer lugs are intended for use in holding the mouthpiece 34 in position on the gable top 26 preparatory to the fusing of the mounting flange 46 thereto. The retainer lugs 48 must be spaced from the mounting flange 46 a sufficient distance for engaging between themselves and the mounting flange the edge portion of the gable top 26 bounding the aperture 32.
Generally, the spacing between each retainer lug 48 and mounting flange 46 should be from about four to five times the thickness of each side wall 28 of the gable top 26, so that the retainer lugs may easily travel beyond the edges of the gable top at the time of the mounting of the mouth-piece 34 thereon. This spacing may be from about 1.5 to
OF ONE PIECE MOLDING
BACKGROUND OF THE INVENTION
This invention deals generally with packages and more specifically with cartons to be filled with milk, juice or like beverages or other liquid products. Still more specifically, the invention is directed to a carton of the variety known as the gable top, having a double sloping top on a boxlike body, with a mouthpiece on one of the pair of sloping sides through which the contained fig-rid is discharged.
The long practiced method of discharging the liquid from a gable top carton has been to open the sealed ridge of the gable top by forcing its opposite sides away from each other. This practice is objectionable because of the considerable manual effort required. There is a hygienic problem, too, arising from the direct monopoly-lion of the gable top from which the liquid is to repoured out.
In order to remedy these weaknesses, there has been suggested the use of a plastic mouthpiece, portico-laxly in conjunction with cartons for liquors, soy sauce or the like. The mouthpiece is attached to one of the sloping sides of the gable top, so that the sealed ridge of the gable top need not be forced open ire discharging the contained liquid. As heretofore constructed, however, the mouthpiece has been of two piece design, consisting essentially of a spout and a cap. The user has had first to remove the cap, then to proceed to tear off the closure on the spout.
Not only does the prior art mouthpiece of two piece construction demand considerable time and labor for opening, but also its fabrication is costly as it requires two different molds. The assemblage and mounting of the .. 1 12283;~;~
two piece mouthpiece in position on the gable top carton is also not so easy as could be desired.
SUMMARY OF THE INVENTION
-The present invention solves all the noted pro-bless heretofore encountered in the manufacture and use of gable top cartons by providing an entirely novel mouth-piece of one piece construction.
Stated briefly, the invention provides a gable top carton for containing a liquid product, comprising a boxlike body having a closed bottom, and a sealed gable top closing the top end of the boxlike body. The gable top has a pair of sloping sides one of which has an aver-lure defined therein. Water tightly closing this aperture is a mouthpiece of unitary construction including a lid with a pull tab projecting therefrom.
The mouthpiece of the foregoing construction can be a one piece injection molding of a plastic. In use, then, the lid can be torn open upon exertion of a pull on the pull tab. Preferably, the pull tab is formed integral with a hook which, when the lid is torn open, can engage the sealed ridge of the gable top for holding the lid open. After a desired quantity of the liquid is poured out, the hook may be disengaged from the ridge, and the lid may be closed and held closed until the next disk charge from the carton.
Two basic configurations are possible within the broad teaching hereof. One has a flanged, substantially tubular spout, the outer end of which is closed by the wearable lid. The flange on the inner end of the spout is fused internally to the edge portion of the gable top de-fining the aperture. The other takes the form of a flat plate attached to the outside surface of the edge portion of the gable top. Either way, the lid is readily openable by pulling the pull tab, as then the lid is partly torn i228;~33 off the spout or the gable top. There is absolutely no need for touching those parts of the mouthpiece or the carton with which the liquid is to contact while being poured out. Furthermore, partly torn open and left hingedly coupled to the rest of the mouthpiece, the lid does not interfere with the discharge of the liquid as the hook on its distal end can be engaged with the ridge of the gable top to hold the lid fully open.
It will of course be seen that the mouthpiece of unitary construction in accordance with the invention is much easier to fabricate and less costly than that of two piece design in accordance with the prior art. The mount-in of the mouthpiece in position on the gable top is also easy, as it is readily fusible, either thermally or ultra-tonically, to the paper board of which the carton is made.
The gable top carton constructed in accordance with the invention is suitable for as a package for milk, juice or the like. The cartons for such beverages are used up in comparatively short periods of time after being opened. They are usually not opened or closed too ire-quaintly, nor need they be held closed too tightly. The improved mouthpiece hereby proposed is highly suitable for use on such cartons, being simple in construction, in-expensive of manufacture, easy of use, and hygienically favorable.
The above and other features and advantages of this invention and the manner of realizing them will be-come more apparent, and the invention itself will best be understood, from a study of the following description and appended claims, with reference had to the attached draw-ins showing some preferable embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a preferred form of the gable top carton constructed in accordance with the .. 3 12283~3 invention;
FIG. 2 is an enlarged, fragmentary vertical sea-lion through the gable top carton of FIG. 1, showing in particular the mouthpiece on the gable top of the carton;
FIG. 3 is a longitudinal axial section through the mouthpiece of the gable top carton of FIG. l;
FIG. 4 is a top plan of the mouthpiece of the gable top carton of FIG. l;
FIG. 5 is a rear elevation of the mouthpiece, as seen from the left hand side of FIGS. 3 and 4;
FIG. 6 is a front elevation of the mouthpiece, as seen from the right hand side of FIGS. 3 and 4;
FIG. 7 is a view similar to FIG. 3 but showing a slight modification of the mouthpiece;
FIG. 8 is a perspective view of another example of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 9 is a longitudinal axial section through the mouthpiece of FIG. 8;
FIG. 10 is a view similar to FIG. 9 but explant Tory of how the wearable lid of the FIG. 8 mouthpiece is prevented from being depressed too far into the spout;
FIG. 11 is a perspective view of still another example of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 12 is a longitudinal axial section through the mouthpiece of FIG. 11;
FIG. 13 is a view similar to FIG. 12 but explant Tory of how the wearable lid of the FIG. 11 mouthpiece is prevented from being depressed too far into the spout;
FIG. 14 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 15 is a longitudinal axial section through the mouthpiece of FIG. 14;
FIG. 16 is a perspective view of a slight mod-ligation of the FIG. 14 mouthpiece;
FIG. 17 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 18 is a longitudinal axial section through the mouthpiece of FIG. 17;
FIG. 19 is a rear elevation of the mouthpiece of FIG. 17, as seen from the left hand side of FIG. 18;
FIG. 20 is a view similar to FIG. 19 but showing a slight modification of the FIG. 17 mouthpiece;
FIG. 21 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. l;
FIG. 22 is a longitudinal axial section through the mouthpiece of FIG. 21;
FIG. 23 is a front elevation of the mouthpiece of FIG. 21, as seen from the right hand side of FIG. 22;
FIG. 24 is a perspective view of a further ox-ample of mouthpiece suitable for use with the gable top carton of FIG. 1, the mouthpiece combining the features of the FIGS. 17 and 21 mouthpieces;
FIG. 25 is a fragmentary vertical section through a gable top carton incorporating a different form of the mouthpiece in accordance with the invention;
FIG. 26 is a top plan view of the mouthpiece of the gable top carton of FIG. 25; and FIG. 27 is a side elevation of the mouthpiece of the gable top carton of FIG. 25.
DESCRIPTION OF TUB PREFERRED EMBODIMENTS
The gable top carton in accordance with the in-mention is shown in its entirety in FIG. 1 of the attached drawings and therein generally designated 20. Typically made of paper board, the carton 20 includes a boxlike body 22 having a conventionally closed bottom 24. At the top . 5 I2283~33 of the boxlike body 22 is a gable top 26 in the form of a double sloping roof, having a pair of oppositely sloping sides 28 with a sealed ridge 30 there between, as will be seen also from FIG. 2. One of the sloping sides 28 of the S gable top 26 has an aperture 32 defined approximately eon-tally therein. The aperture 32 is water tightly closed by a mouthpiece 34 forming the gist of the present invention.
The mouthpiece 34 is a one piece molding of polyethylene, polypropylene, or like plastic material.
As illustrated in detail in FIGS. 2 through 6, the mouthpiece 34 has a substantially tubular spout 36 protruding outwardly from the aperture 32 in the gable top 26. The spout 36 is open at its inner end to the interior of the carton 20 and has an outer end closed by a wearable lid 38. A pull tab 40 extends outwardly or upwardly from the lid 38 and terminates in a hook 42 oriented toward the ridge 30 of the gable top 26.
Protruding from the pull tab 40, in a direction away from the gable top ridge 30, is a limit stop 44 engage able, when the lid 38 is reclosed after having been torn open, with the outer end of the spout 36 for prevent-in the lid from being depressed too far into the spout.
The limit stop 44 is further effective to reinforce the pull tab 40 and to add to its rigidity. The limit stop 44 should not significantly protrude beyond the spout 36 in order to avoid interference with ultrasonic or thermal fusing means to be explained presently. Preferably, the limit stop 44 should be spaced a slight distance from the lid 38 in order to positively hold the lid reclosed after being torn open. This spacing may be approximately equal to the thickness of the lid 38.
The mouthpiece 34 is further formed to include a mounting flange 46 on the inner end of the spout 36. The mounting flange 46 is water tightly fused to the inside surface of the edge portion of the gable top 26 bounding the aperture 32.
~228~33 Additionally, the mouthpiece 34 has a plurality of, typically three or four, retainer lugs 48 projecting laterally from the spout 36 in circumferential spaced apart positions thereon. These retainer lugs are intended for use in holding the mouthpiece 34 in position on the gable top 26 preparatory to the fusing of the mounting flange 46 thereto. The retainer lugs 48 must be spaced from the mounting flange 46 a sufficient distance for engaging between themselves and the mounting flange the edge portion of the gable top 26 bounding the aperture 32.
Generally, the spacing between each retainer lug 48 and mounting flange 46 should be from about four to five times the thickness of each side wall 28 of the gable top 26, so that the retainer lugs may easily travel beyond the edges of the gable top at the time of the mounting of the mouth-piece 34 thereon. This spacing may be from about 1.5 to
2.0 millimeters in practice. Should the spacing be less than the above specified range, the retainer lugs would fail to engage the gable top edges. If the spacing were greater than that range, on the other hand, then the mouthpiece might tilt on the gable top, making difficult the proper fusion of the mounting flange 46 thereto.
Preferably, and as illustrated in FIG. 7, the spacing So between the mounting flange 46 and that one (designated 48' in this figure) of the retainer lugs 46 which is located at the blunt end directed to the left in this figure) of the spout 36 should be greater than the spacing So between the mounting flange 46 and each of the other retainer lugs 46 arranged on the curved portions of the spout. Thus, for example, if the spacing So is 1.0 millimeter more than the thickness of the paper board of which the carton 20 is made, the spacing So may be from 1.5 to 2.0 millimeters more than the thickness of the paper board. This difference between the spacings So and So is preferred because the linear edge of the gable top 26, extending parallel to the gable top ridge 30 and opt . 7 ~228333 posed to the blunt end of the mouthpiece spout 36 is more pliant than the other gable top edges bounding the aver-lure 32, as will be later explained in more detail.
As seen in a plan view as in FIG. 4, the spout 36, lid 38 and mounting flange 46 of the mouthpiece 34, as well as the gable top aperture 32 to be closed thereby, are all in the shape of a baseball home plate, with a blunt end directed toward the gable top ridge 30 and a relatively pointed (in fact. suitably rounded) end dip rooted away therefrom.
It will also be observed from FIGS. 3 and 4 in particular that the wearable lid 38 is bounded by a linear first groove 50 cut internally in the blunt end of the closed top of the spout 36 and by a curved second groove 52 extending from the pointed or rounded end of the spout top to the opposite extremities of the first groove 50 along the pair of opposite sides of the spout top. The second groove 52 is so deep that the lid 38 can be torn along this second groove upon exertion of a pull on the pull tab 40. The first groove 50 is so shallow, however, that the lid 38 is not to be torn along this groove; in-stead, the first groove 50 serves to provide a hinge con-section between the torn lid and the spout. Thus the lid 38 has a hinge end at the blunt end of the spout top and a tear end at the relatively rounded end thereof. The pull tab 40 is located at or adjacent the tear end of the lid 38.
The depths of the grooves 50 and 52 must of course be determined in relation to the thickness of the lid 38. The thickness To, FIG. 3, of the spout top at the first groove 50 should be sufficiently great to withstand the repeated opening and closing of the lid 38 in the use of this gable top carton 20. A recommended range of the thickness To is from 0.4 to 0.5 millimeter. The thickness To of the spout top at the second groove 52, on the other hand, must be so small as to allow the ready tearing of the lid 38 but, nevertheless, must not be so small as to break as at the time of the mounting of the mouthpiece 34 on the gable top 26 or during the shipment of the carton 20. A recommended range of the thickness To is therefore from 0.2 to 0.3 millimeter.
The mouthpiece 34 of the above improved configu-ration is to be mounted in position on the carton 20 be-fore the latter is formed into the gable topped boxlike shape of FIG. 1. The spout 36 of the mouthpiece 34 may be inserted into and through the aperture 32 in the gable top 26 from within until the retainer lugs 48 on the spout come out of the aperture and engage the edges of the gable top 26 between themselves and the mounting flange 46.
Then the mounting flange 46 may be fused, either thermally or ultrasonically, to the inside surface of the edge port lion of the gable top 26.
As has been stated in conjunction with FIG. 7, the spacing So between the mounting flange 46 and the no-trainer lug 48' at the blunt end of the spout 36 is from 0.5 to 1.0 millimeter more than the spacing So between the mounting flange and the other retainer lugs 48. Thus, even though the linear gable top edge to be engaged by the retainer lug 48' is significantly more pliant than the other gable top edges to be engaged by the retainer lugs -48, all the retainer lugs 48 and 48' will pass the aver-lure 32 concurrently, thereby simultaneously engaging the gable top edges between themselves and the mounting flange 46. The mounting of the mouthpiece 34 on the gable top 26 will be appreciably facilitated in this manner.
It will be seen that the spout 36 of the mouth-piece 34 tapers as it extends from its open inner end to-ward its closed outer end. This taper is intended to ox-petite the insertion of the spout 36 into and through the gable top aperture 32. Such a taper will also make it easier to fuse the mounting flange to the gable top 26, as the ultrasonic horn or thermal fusing head will be more 1228;~;~3 easily accessible to the outside surface of the gable top edge portion around the aperture 32.
The gable top carton 20 may be filled with a de-sired beverage or other liquid product following the S mounting of the mouthpiece 34 in positioll thereon, and then has its gable top closed and sealed, as has been known heretofore.
The contained liquid is to be poured out by opening the lid 38 of the mouthpiece 34. The lid 38 may be opened by pulling the pull tab 40, or by tilting the pull tab toward the gable top ridge 30. Being augmented in rigidity by the limit stop 44, the pull tab 40 will transmit the full manual pressure thereon to the tear end of the lid 38. The concentrated application of the pull to this tear end of the lid 38 will first cause the break-age or tear of the spout top at that part of the deep groove 52 which is at the tear end of the lid. Then, upon sustained exertion of a relatively slight pull on the pull tab 40, the lid 38 will be torn along the deep groove 52, creating burrs on the opposed edges of the lid and the spout that have been torn apart. The tearing will cease at the opposite extremities of the shallow groove 50 at the hinge end of the lid 38.
Thus fully opened, the lid 38 is pivot able on the spout 36 at its hinge end. The lid 38 may be held fully open by engaging its hook 42 with the sealed ridge 30 of the gable top 26, as indicated by the phantom out-line in FIG. 2. The liquid may now be poured out of the open spout 36 of the mouthpiece 34.
Following the discharge of a desired quantity of the liquid, the hook 42 may be disengaged from the gable top ridge 30, and the lid 38 may be reclosed by being pushed into the top of the spout 36. The previous tearing of the lid 38 has created burrs on its periphery and on the top edge of the spout 36. Consequently, upon redo-sure of the lid 38, its peripheral burrs will engage with 122833~S
the burrs on the top edge of the spout, so that the lid will remain closed instead of being sprung open by some resiliency of its hinge end.
The user may exert a too much force on the lid 38 in reclosing it. Then the limit stop 44 on the pull tab 40 will butt on the top edge of the spout 36, prevent-in the lid 38 from being depressed too far into the spout. It has been mentioned that the limit stop 44 is slightly spaced upwardly or outwardly from the top of the spout 36. Accordingly, by being depressed into the spout 36 to an extent less than the spacing between the limit stop 44 and the top of the spout, the lid 38 will be more positively locked against accidental reopening by the inter engaging burrs on the lid and the spout.
In FIGS. 8, 9 and 10 is illustrated a slight modification of the above disclosed mouthpiece 34. Gene-rally designated 134, this modified mouthpiece is to be mounted on the gable top 26 of the carton 20, FIGS. 1 and 2, in substitution for the mouthpiece 34.
The mouthpiece 134 differs from the mouthpiece 34 in having a pair of hooks 142 and 160 formed integrally on the distal end of the pull tab 40. The first hook 142 is substantially equivalent to the hook 42 of the precede in embodiment, being directed toward the sealed ridge of the gable top for engaging same when the lid is torn open.
The second hook 160 is directed away from the gable top ridge and is adapted to engage the outer edge of the spout 36 when the lid, on being reclosed after having been torn open, is depressed too far into the spout. The other de-tails of construction of the mouthpiece 134 can be identi-eel with those set forth in connection with the preceding embodiment.
The pair of hooks 142 and 160 on the pull tab 40, projecting in the opposite directions from its top, serve in combination the additional purpose of affording a firmer grip on the pull tab than if only one hook is form-~228333 Ed thereon as in the case of the mouthpiece 34. The user may pull the pull tab 40 by gripping both hooks 142 and 160 for opening the lid 38.
On being subsequently reclosed, the lid 38 may be forced into the spout 36 beyond the limit determined by the limit stop 44 on the pull tab 40. Then, as illustrate Ed in FIG. 10, the second hook 160 will come into abutment against the top edge of the spout 36, preventing the lid from being depressed any further into the spout or into the carton. It will have been seen that the lid 38 of this mouthpiece 134 is dually equipped against undue de-press ion into the spout 36.
FIGS. 11, 12 and 13 show still another mouth-piece 234 to be mounted on the gable top of the carton 20 in place of the mouthpiece 34. The mouthpiece 234 lea-lures an indentation 262 formed in the pull tab 40 at a point intermediate the hook 42 and the limit stop 44 thereon. The indentation 262 extends transversely of the pull tab 40, thus lessening its thickness at the point midway between hook 42 and limit stop 44. The mouthpiece 234 can be analogous in the other details of configuration with the first disclosed mouthpiece 34.
The indentation 262 is intended to make the pull tab 40 collapsible and hence to avoid undue depression of the lid 38 into the spout 36. The lid 38 may be reclosed, after having been torn open as indicated by the dashed lines in FIG. 13, by grasping the hooked top of the pull tab 40. When the torn lid 38 is reclosed with so much force, the limit stop 44 on the pull tab 40 will come into abutment against the top edge of the spout 36. If then the manual force on the pull tab 40 is still not released, then the pull tab will collapse, bending toward the gable top ridge as indicated by the arrow in FIG. 13. Both lid 38 and limit stop 44 will then be substantially relieved from the force on the pull tab 40 and so will stay in the positions of FIG. 13, with the lid properly closing the ~22833~
open top of the spout 36.
It will have been seen from the foregoing that the collapsible pull tab of this mouthpiece 234 can be thought of as an alternative to the dually hooked pull tab of the FIGS. 8 through 10 pull tab 134. Further, since the indentation 262 is meant to make the pull tab collar-sidle as above, it will be apparent that such an indent-lion or equivalent recess could be formed on either or both sides of the pull tab. The mouthpiece 234 with the collapsible pull tab 30 offers the advantage that it makes possible the use of a relatively soft plastic material.
FIGS. 14 and 15 is an illustration of a further example of mouthpiece 334 in accordance with the invent lion, also suitable for use on the carton 20 of FIGS. 1 15 and 2 in place of the mouthpiece 34. The mouthpiece 334 has provisions for protecting the contained liquid against premature denaturation or perishing.
One of the requisites of packages for perishable products is the capability of maintaining them in a sound state for as long a period of time as possible. In cases where the carton mouthpiece in accordance with the invent lion is molded of polyethylene or like transparent or semitransparent plastic material, the light transmitted there through might cause easy denaturation of the contain-Ed liquid. In most countries the law dictates the range of plastics that can be used as food packages, and pro-habits the use of additives for making them impenetrable to light.
Therefore, in the mouthpiece 334 of FIGS. 14 and 15, the outer surface of the lid 38 is knurled in a cross-cross fashion, as designated by the numeral 364. The crisscross gnarling 364 of the lid 38 is effective to dip-fuzzily reflect the rays of light falling thereon and hence to materially lessen the intensity of the rays penetrating the lid. The mouthpiece 334 is substantially akin in the other details of construction to the mouthpiece 34 of , 12283~3 FIGS. 1 through 7.
Of course, not only the outer surface but also the inner surface of the lid 38 could be knurled for pro-venting the passage of light to a still greater degree.
Still further, as illustrated in FIG. 16, the spout 36 of the mouthpiece can also be knurled as at 366 for the same purpose. Such gnarling of the mouthpiece is easy as the required surface or faces of the mold is knurled.
A further preferred example of mouthpiece 434 shown in FIGS. 17, 18 and 19 is formed to include a rein-forcing portion 468 at the junction between the lid 38 and the pull tab 40. The reinforcing portion 468 extends throughout the width of the pull tab 40 and is located on that side of the pull tab which is directed toward the hinge end of the lid 38. The other details of construe-lion of this mouthpiece 434 can be substantially as set forth in connection with FIGS. 1 through 7.
The reinforcing portion 468 serves not only to join the pull tab 40 to the lid 38 against the possibility of breakage but also to prevent the flexing of the pull tab when the lid 38 is reclosed after having been torn open. Should the pull tab 40 be too pliant, the limit stop 44 thereon might become directed upwardly when the lid 38 is being reclosed by pressing the pull tab, thus failing to engage the top edge of the spout 36 and allow-in the lid to be depressed into the spout. The reinforce in portion 468 precludes this possibility.
In PIG. 20 is shown a modified reinforcing port lion 468' in the form of a relatively thin rib, also formed at the junction between lid 38 and pull tab 40.
This rib will perform the same functions as the reinforce in portion 468 of FIGS. 17 through 19. The provision of a pair of such ribs in spaced apart positions is undesir-able, however, as dust or other foreign matter would act cumulate there between.
In a further example of mouthpiece 534 shown in Lowe FIGS. 21, 22 and 23, the pull tab 40 is joined to the lid 38 via a constricted neck 570. The mouthpiece 534 is Sims liar in the other details of construction to the mouth-piece 34 of FIGS. 1 through 7.
When the pull tab 40 is pulled for tearing open the lid 38, its constricted neck 570 serves to concentrate the pulling force on the lid 38. Consequently, the lid 38 is openable with a smaller force than in cases where the pull tab is joined directly to the lid as in all the fore-going embodiments.
A further example of mouthpiece 634 shown in FIG. 24 incorporates the features of both the mouthpiece 434 of FIGS. 17 through 19 and the mouthpiece 534 of FIGS.
21 and 23. The pull tab 40 is joined to the lid 38 via a constricted neck 670 which has a reinforcing portion 668 formed on its hinge end side. The advantages accruing from these features are as set forth already.
FIGS. 25, 26 and 27 are illustrations of a still further example of mouthpiece 734 which differs from all the preceding embodiments in having no spout. The mouth-piece 734 is substantially in the form of a flat plate, comprising a relatively thick lid 738, complete with a pull tab 740 protruding outwardly therefrom and terminating in a hook 742, and a mounting flange 746 encircling the lid 738. Both lid 738 and mounting flange 746 are in the shape of a baseball home plate as seen in a plan view as in FIG. 26. The lid 738 fits in the aperture 32 of corresponding shape in one of the sloping sides 28 of the gable top 26, and the mounting flange 746 is fused to the adjoining edge portion of the gable top. The mounting flange 746 has a groove 772 formed in its inside surface, in the vicinity of its blunt end directed toward the gable top ridge 30. The groove 772 extends parallel to the gable top ridge 30. The pull tab 740 is disposed adjacent the relatively pointed end of the lid 738 direct-Ed away from the gable top ridge 30.
.
122833~
Thus, upon exertion of a pull on the pull tab 740, the mounting flange 746 will be torn from the gable top 26, first at its part in the immediate vicinity of the pull tab, until the tear proceeds to the groove 772. Then S the lid 738, as well as part of the mounting flange 746 will bend at the groove 772. The pull tab 740 may then be hooked to the gable top ridge 30, as depicted by the dashed lines in FIG. 25, for pouring out the contained liquid through the gable top aperture 32.
For reclosing the gable top aperture 32, the hook 742 on the pull tab 740 may be disengaged from the gable top ridge 30, and the lid 738 together with part of the mounting flange 746 may be turned back until the lid 738 fits in the gable top aperture. The lid 738 will stably remain closed by virtue of its frictional engage-mint with the gable top edges defining the aperture 32, with the mounting flange 746 held against the gable top.
The gable top edges bounding the aperture 32 are not protected by this mouthpiece 734 after the lid 738 has been torn open. This will present no problem, however, particularly if the carton contains milk, juice or like beverage that is used up in a comparatively short period of time. The other mouthpieces disclosed herein, which are all fused to the gable top from within, lend them-selves for use with more penetrative liquid products swishes liquors and soy sauce.
Notwithstanding the foregoing detailed disco-sure, it is understood that the preferred embodiments set forth herein are by way of example only and not to impose limitations upon the invention, as a variety of modifica-lions or alterations of such embodiments will readily ox-cur to one skilled in the art. For instance, the mouth-piece need not be in the shape of a home plate as seen in a plan view but may be circular, rectangular, triangular, hexagonal, and so forth. It will also be understood that, of the two grooves 50 and 52 defining the lid 38, the sea-isle on groove 52 need not be cut in the inside surface of the closed outer end of the spout 36; instead, two such grooves having a total depth greater than the first groove 50 may be formed in register in both inside and outside surfaces of the outer end of the spout.
, , .
Preferably, and as illustrated in FIG. 7, the spacing So between the mounting flange 46 and that one (designated 48' in this figure) of the retainer lugs 46 which is located at the blunt end directed to the left in this figure) of the spout 36 should be greater than the spacing So between the mounting flange 46 and each of the other retainer lugs 46 arranged on the curved portions of the spout. Thus, for example, if the spacing So is 1.0 millimeter more than the thickness of the paper board of which the carton 20 is made, the spacing So may be from 1.5 to 2.0 millimeters more than the thickness of the paper board. This difference between the spacings So and So is preferred because the linear edge of the gable top 26, extending parallel to the gable top ridge 30 and opt . 7 ~228333 posed to the blunt end of the mouthpiece spout 36 is more pliant than the other gable top edges bounding the aver-lure 32, as will be later explained in more detail.
As seen in a plan view as in FIG. 4, the spout 36, lid 38 and mounting flange 46 of the mouthpiece 34, as well as the gable top aperture 32 to be closed thereby, are all in the shape of a baseball home plate, with a blunt end directed toward the gable top ridge 30 and a relatively pointed (in fact. suitably rounded) end dip rooted away therefrom.
It will also be observed from FIGS. 3 and 4 in particular that the wearable lid 38 is bounded by a linear first groove 50 cut internally in the blunt end of the closed top of the spout 36 and by a curved second groove 52 extending from the pointed or rounded end of the spout top to the opposite extremities of the first groove 50 along the pair of opposite sides of the spout top. The second groove 52 is so deep that the lid 38 can be torn along this second groove upon exertion of a pull on the pull tab 40. The first groove 50 is so shallow, however, that the lid 38 is not to be torn along this groove; in-stead, the first groove 50 serves to provide a hinge con-section between the torn lid and the spout. Thus the lid 38 has a hinge end at the blunt end of the spout top and a tear end at the relatively rounded end thereof. The pull tab 40 is located at or adjacent the tear end of the lid 38.
The depths of the grooves 50 and 52 must of course be determined in relation to the thickness of the lid 38. The thickness To, FIG. 3, of the spout top at the first groove 50 should be sufficiently great to withstand the repeated opening and closing of the lid 38 in the use of this gable top carton 20. A recommended range of the thickness To is from 0.4 to 0.5 millimeter. The thickness To of the spout top at the second groove 52, on the other hand, must be so small as to allow the ready tearing of the lid 38 but, nevertheless, must not be so small as to break as at the time of the mounting of the mouthpiece 34 on the gable top 26 or during the shipment of the carton 20. A recommended range of the thickness To is therefore from 0.2 to 0.3 millimeter.
The mouthpiece 34 of the above improved configu-ration is to be mounted in position on the carton 20 be-fore the latter is formed into the gable topped boxlike shape of FIG. 1. The spout 36 of the mouthpiece 34 may be inserted into and through the aperture 32 in the gable top 26 from within until the retainer lugs 48 on the spout come out of the aperture and engage the edges of the gable top 26 between themselves and the mounting flange 46.
Then the mounting flange 46 may be fused, either thermally or ultrasonically, to the inside surface of the edge port lion of the gable top 26.
As has been stated in conjunction with FIG. 7, the spacing So between the mounting flange 46 and the no-trainer lug 48' at the blunt end of the spout 36 is from 0.5 to 1.0 millimeter more than the spacing So between the mounting flange and the other retainer lugs 48. Thus, even though the linear gable top edge to be engaged by the retainer lug 48' is significantly more pliant than the other gable top edges to be engaged by the retainer lugs -48, all the retainer lugs 48 and 48' will pass the aver-lure 32 concurrently, thereby simultaneously engaging the gable top edges between themselves and the mounting flange 46. The mounting of the mouthpiece 34 on the gable top 26 will be appreciably facilitated in this manner.
It will be seen that the spout 36 of the mouth-piece 34 tapers as it extends from its open inner end to-ward its closed outer end. This taper is intended to ox-petite the insertion of the spout 36 into and through the gable top aperture 32. Such a taper will also make it easier to fuse the mounting flange to the gable top 26, as the ultrasonic horn or thermal fusing head will be more 1228;~;~3 easily accessible to the outside surface of the gable top edge portion around the aperture 32.
The gable top carton 20 may be filled with a de-sired beverage or other liquid product following the S mounting of the mouthpiece 34 in positioll thereon, and then has its gable top closed and sealed, as has been known heretofore.
The contained liquid is to be poured out by opening the lid 38 of the mouthpiece 34. The lid 38 may be opened by pulling the pull tab 40, or by tilting the pull tab toward the gable top ridge 30. Being augmented in rigidity by the limit stop 44, the pull tab 40 will transmit the full manual pressure thereon to the tear end of the lid 38. The concentrated application of the pull to this tear end of the lid 38 will first cause the break-age or tear of the spout top at that part of the deep groove 52 which is at the tear end of the lid. Then, upon sustained exertion of a relatively slight pull on the pull tab 40, the lid 38 will be torn along the deep groove 52, creating burrs on the opposed edges of the lid and the spout that have been torn apart. The tearing will cease at the opposite extremities of the shallow groove 50 at the hinge end of the lid 38.
Thus fully opened, the lid 38 is pivot able on the spout 36 at its hinge end. The lid 38 may be held fully open by engaging its hook 42 with the sealed ridge 30 of the gable top 26, as indicated by the phantom out-line in FIG. 2. The liquid may now be poured out of the open spout 36 of the mouthpiece 34.
Following the discharge of a desired quantity of the liquid, the hook 42 may be disengaged from the gable top ridge 30, and the lid 38 may be reclosed by being pushed into the top of the spout 36. The previous tearing of the lid 38 has created burrs on its periphery and on the top edge of the spout 36. Consequently, upon redo-sure of the lid 38, its peripheral burrs will engage with 122833~S
the burrs on the top edge of the spout, so that the lid will remain closed instead of being sprung open by some resiliency of its hinge end.
The user may exert a too much force on the lid 38 in reclosing it. Then the limit stop 44 on the pull tab 40 will butt on the top edge of the spout 36, prevent-in the lid 38 from being depressed too far into the spout. It has been mentioned that the limit stop 44 is slightly spaced upwardly or outwardly from the top of the spout 36. Accordingly, by being depressed into the spout 36 to an extent less than the spacing between the limit stop 44 and the top of the spout, the lid 38 will be more positively locked against accidental reopening by the inter engaging burrs on the lid and the spout.
In FIGS. 8, 9 and 10 is illustrated a slight modification of the above disclosed mouthpiece 34. Gene-rally designated 134, this modified mouthpiece is to be mounted on the gable top 26 of the carton 20, FIGS. 1 and 2, in substitution for the mouthpiece 34.
The mouthpiece 134 differs from the mouthpiece 34 in having a pair of hooks 142 and 160 formed integrally on the distal end of the pull tab 40. The first hook 142 is substantially equivalent to the hook 42 of the precede in embodiment, being directed toward the sealed ridge of the gable top for engaging same when the lid is torn open.
The second hook 160 is directed away from the gable top ridge and is adapted to engage the outer edge of the spout 36 when the lid, on being reclosed after having been torn open, is depressed too far into the spout. The other de-tails of construction of the mouthpiece 134 can be identi-eel with those set forth in connection with the preceding embodiment.
The pair of hooks 142 and 160 on the pull tab 40, projecting in the opposite directions from its top, serve in combination the additional purpose of affording a firmer grip on the pull tab than if only one hook is form-~228333 Ed thereon as in the case of the mouthpiece 34. The user may pull the pull tab 40 by gripping both hooks 142 and 160 for opening the lid 38.
On being subsequently reclosed, the lid 38 may be forced into the spout 36 beyond the limit determined by the limit stop 44 on the pull tab 40. Then, as illustrate Ed in FIG. 10, the second hook 160 will come into abutment against the top edge of the spout 36, preventing the lid from being depressed any further into the spout or into the carton. It will have been seen that the lid 38 of this mouthpiece 134 is dually equipped against undue de-press ion into the spout 36.
FIGS. 11, 12 and 13 show still another mouth-piece 234 to be mounted on the gable top of the carton 20 in place of the mouthpiece 34. The mouthpiece 234 lea-lures an indentation 262 formed in the pull tab 40 at a point intermediate the hook 42 and the limit stop 44 thereon. The indentation 262 extends transversely of the pull tab 40, thus lessening its thickness at the point midway between hook 42 and limit stop 44. The mouthpiece 234 can be analogous in the other details of configuration with the first disclosed mouthpiece 34.
The indentation 262 is intended to make the pull tab 40 collapsible and hence to avoid undue depression of the lid 38 into the spout 36. The lid 38 may be reclosed, after having been torn open as indicated by the dashed lines in FIG. 13, by grasping the hooked top of the pull tab 40. When the torn lid 38 is reclosed with so much force, the limit stop 44 on the pull tab 40 will come into abutment against the top edge of the spout 36. If then the manual force on the pull tab 40 is still not released, then the pull tab will collapse, bending toward the gable top ridge as indicated by the arrow in FIG. 13. Both lid 38 and limit stop 44 will then be substantially relieved from the force on the pull tab 40 and so will stay in the positions of FIG. 13, with the lid properly closing the ~22833~
open top of the spout 36.
It will have been seen from the foregoing that the collapsible pull tab of this mouthpiece 234 can be thought of as an alternative to the dually hooked pull tab of the FIGS. 8 through 10 pull tab 134. Further, since the indentation 262 is meant to make the pull tab collar-sidle as above, it will be apparent that such an indent-lion or equivalent recess could be formed on either or both sides of the pull tab. The mouthpiece 234 with the collapsible pull tab 30 offers the advantage that it makes possible the use of a relatively soft plastic material.
FIGS. 14 and 15 is an illustration of a further example of mouthpiece 334 in accordance with the invent lion, also suitable for use on the carton 20 of FIGS. 1 15 and 2 in place of the mouthpiece 34. The mouthpiece 334 has provisions for protecting the contained liquid against premature denaturation or perishing.
One of the requisites of packages for perishable products is the capability of maintaining them in a sound state for as long a period of time as possible. In cases where the carton mouthpiece in accordance with the invent lion is molded of polyethylene or like transparent or semitransparent plastic material, the light transmitted there through might cause easy denaturation of the contain-Ed liquid. In most countries the law dictates the range of plastics that can be used as food packages, and pro-habits the use of additives for making them impenetrable to light.
Therefore, in the mouthpiece 334 of FIGS. 14 and 15, the outer surface of the lid 38 is knurled in a cross-cross fashion, as designated by the numeral 364. The crisscross gnarling 364 of the lid 38 is effective to dip-fuzzily reflect the rays of light falling thereon and hence to materially lessen the intensity of the rays penetrating the lid. The mouthpiece 334 is substantially akin in the other details of construction to the mouthpiece 34 of , 12283~3 FIGS. 1 through 7.
Of course, not only the outer surface but also the inner surface of the lid 38 could be knurled for pro-venting the passage of light to a still greater degree.
Still further, as illustrated in FIG. 16, the spout 36 of the mouthpiece can also be knurled as at 366 for the same purpose. Such gnarling of the mouthpiece is easy as the required surface or faces of the mold is knurled.
A further preferred example of mouthpiece 434 shown in FIGS. 17, 18 and 19 is formed to include a rein-forcing portion 468 at the junction between the lid 38 and the pull tab 40. The reinforcing portion 468 extends throughout the width of the pull tab 40 and is located on that side of the pull tab which is directed toward the hinge end of the lid 38. The other details of construe-lion of this mouthpiece 434 can be substantially as set forth in connection with FIGS. 1 through 7.
The reinforcing portion 468 serves not only to join the pull tab 40 to the lid 38 against the possibility of breakage but also to prevent the flexing of the pull tab when the lid 38 is reclosed after having been torn open. Should the pull tab 40 be too pliant, the limit stop 44 thereon might become directed upwardly when the lid 38 is being reclosed by pressing the pull tab, thus failing to engage the top edge of the spout 36 and allow-in the lid to be depressed into the spout. The reinforce in portion 468 precludes this possibility.
In PIG. 20 is shown a modified reinforcing port lion 468' in the form of a relatively thin rib, also formed at the junction between lid 38 and pull tab 40.
This rib will perform the same functions as the reinforce in portion 468 of FIGS. 17 through 19. The provision of a pair of such ribs in spaced apart positions is undesir-able, however, as dust or other foreign matter would act cumulate there between.
In a further example of mouthpiece 534 shown in Lowe FIGS. 21, 22 and 23, the pull tab 40 is joined to the lid 38 via a constricted neck 570. The mouthpiece 534 is Sims liar in the other details of construction to the mouth-piece 34 of FIGS. 1 through 7.
When the pull tab 40 is pulled for tearing open the lid 38, its constricted neck 570 serves to concentrate the pulling force on the lid 38. Consequently, the lid 38 is openable with a smaller force than in cases where the pull tab is joined directly to the lid as in all the fore-going embodiments.
A further example of mouthpiece 634 shown in FIG. 24 incorporates the features of both the mouthpiece 434 of FIGS. 17 through 19 and the mouthpiece 534 of FIGS.
21 and 23. The pull tab 40 is joined to the lid 38 via a constricted neck 670 which has a reinforcing portion 668 formed on its hinge end side. The advantages accruing from these features are as set forth already.
FIGS. 25, 26 and 27 are illustrations of a still further example of mouthpiece 734 which differs from all the preceding embodiments in having no spout. The mouth-piece 734 is substantially in the form of a flat plate, comprising a relatively thick lid 738, complete with a pull tab 740 protruding outwardly therefrom and terminating in a hook 742, and a mounting flange 746 encircling the lid 738. Both lid 738 and mounting flange 746 are in the shape of a baseball home plate as seen in a plan view as in FIG. 26. The lid 738 fits in the aperture 32 of corresponding shape in one of the sloping sides 28 of the gable top 26, and the mounting flange 746 is fused to the adjoining edge portion of the gable top. The mounting flange 746 has a groove 772 formed in its inside surface, in the vicinity of its blunt end directed toward the gable top ridge 30. The groove 772 extends parallel to the gable top ridge 30. The pull tab 740 is disposed adjacent the relatively pointed end of the lid 738 direct-Ed away from the gable top ridge 30.
.
122833~
Thus, upon exertion of a pull on the pull tab 740, the mounting flange 746 will be torn from the gable top 26, first at its part in the immediate vicinity of the pull tab, until the tear proceeds to the groove 772. Then S the lid 738, as well as part of the mounting flange 746 will bend at the groove 772. The pull tab 740 may then be hooked to the gable top ridge 30, as depicted by the dashed lines in FIG. 25, for pouring out the contained liquid through the gable top aperture 32.
For reclosing the gable top aperture 32, the hook 742 on the pull tab 740 may be disengaged from the gable top ridge 30, and the lid 738 together with part of the mounting flange 746 may be turned back until the lid 738 fits in the gable top aperture. The lid 738 will stably remain closed by virtue of its frictional engage-mint with the gable top edges defining the aperture 32, with the mounting flange 746 held against the gable top.
The gable top edges bounding the aperture 32 are not protected by this mouthpiece 734 after the lid 738 has been torn open. This will present no problem, however, particularly if the carton contains milk, juice or like beverage that is used up in a comparatively short period of time. The other mouthpieces disclosed herein, which are all fused to the gable top from within, lend them-selves for use with more penetrative liquid products swishes liquors and soy sauce.
Notwithstanding the foregoing detailed disco-sure, it is understood that the preferred embodiments set forth herein are by way of example only and not to impose limitations upon the invention, as a variety of modifica-lions or alterations of such embodiments will readily ox-cur to one skilled in the art. For instance, the mouth-piece need not be in the shape of a home plate as seen in a plan view but may be circular, rectangular, triangular, hexagonal, and so forth. It will also be understood that, of the two grooves 50 and 52 defining the lid 38, the sea-isle on groove 52 need not be cut in the inside surface of the closed outer end of the spout 36; instead, two such grooves having a total depth greater than the first groove 50 may be formed in register in both inside and outside surfaces of the outer end of the spout.
, , .
Claims (15)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A gable top carton for containing a liquid produce, com-prising; a boxlike body having a closed bottom, a sealed gable top closing the top end of the boxlike body and having a pair of oppositely sloping sides with a ridge formed therebetween; one of the sloping sides of the gable top having defined therein an aperture for pouring out the contained liquid product; and a mouthpiece of one piece plastic molding liquid-tightly closing the aperture in one of the sloping edges of the gable top, said mouthpiece including a lid having a pull tab projecting therefrom and being formed to include a substantially tubular spout pro-truding outwardly from the aperture in the gable top, the spout being open at an inner end to the interior of the body and having an outer end closed by the lid, said lid having a hinge end located close to said ridge and a tear end located away from the ridge, said lid being defined by a relatively shallow, linear first groove cut in the hinge end of the lid and by a second groove of greater depth than the first groove extending from the tear end of the lid toward the opposite extremities of the first groove along a pair of opposite sides of the lid, said pull tab being formed adjacent the tear end of the lid, whereby upon exertion of a force on the pull tab, the lid is torn along the second groove, the first groove serving to provide a hinge con-nection between the torn lid and the spout, said mouthpiece being formed to include a mounting flange around the inner end of the spout, the flange being fused to an inside surface of an edge portion of the gable top defining the aperture therein, said mouthpiece being formed to include a plurality of retainer lugs protruding laterally from the spout at circumferentially spaced part positions near the mounting flange for holding the mouth-piece in position on the gable top by engaging its edge portion between themselves and the mounting flange preparatory to the fusing of the flange to the gable top.
2. A gable top carton for containing a liquid product, comprising: a boxlike body having a closed bottom; a sealed gable top closing a top end of the boxlike body and having a pair of oppositely sloping sides with a ridge formed there between;
one of the sloping sides of the gable top having defined therein an aperture for pouring out the contained liquid product; and a mouthpiece of one piece plastic molding liquid-tightly closing the aperture in one of the sloping edges of the gable top, said mouthpiece including a lid having a pull tab projecting there-from and being formed to include a substantially tubular spout protruding outwardly from the aperture in the gable top, the spout being open at an inner end to the interior of the body and having an outer end closed by the lid, said lid having a hinge end located close to said ridge and a tear end located away from the ridge, said lid being defined by a relatively shallow, linear first groove cut in the hinge end of the lid and by a second groove of greater depth than the first groove extending from the tear end of the lid toward the opposite extremities of the first groove along a pair of opposite sides of the lid, said pull tab being formed adjacent the tear end of the lid, whereby upon exertion of a force on the pull tab, the lid is torn along the second groove, the first groove serving to provide a hinge connection between the torn lid and the spout, said pull tab of the mouthpiece being formed to include a limit stop protruding therefrom for engaging the outer end of the spout when the lid is reclosed after having been torn open, thereby preventing the lid from being depressed too far into the spout, said pull tab having formed therein an identation which is located farther away from the lid than is the limit stop, whereby when the lid is reclosed by pushing the pull tab after having been torn open, the pull tab is collapsible at the indentation and so is prevented from being depressed into the spout beyond the limit determined by the limit stop on the pull tab.
one of the sloping sides of the gable top having defined therein an aperture for pouring out the contained liquid product; and a mouthpiece of one piece plastic molding liquid-tightly closing the aperture in one of the sloping edges of the gable top, said mouthpiece including a lid having a pull tab projecting there-from and being formed to include a substantially tubular spout protruding outwardly from the aperture in the gable top, the spout being open at an inner end to the interior of the body and having an outer end closed by the lid, said lid having a hinge end located close to said ridge and a tear end located away from the ridge, said lid being defined by a relatively shallow, linear first groove cut in the hinge end of the lid and by a second groove of greater depth than the first groove extending from the tear end of the lid toward the opposite extremities of the first groove along a pair of opposite sides of the lid, said pull tab being formed adjacent the tear end of the lid, whereby upon exertion of a force on the pull tab, the lid is torn along the second groove, the first groove serving to provide a hinge connection between the torn lid and the spout, said pull tab of the mouthpiece being formed to include a limit stop protruding therefrom for engaging the outer end of the spout when the lid is reclosed after having been torn open, thereby preventing the lid from being depressed too far into the spout, said pull tab having formed therein an identation which is located farther away from the lid than is the limit stop, whereby when the lid is reclosed by pushing the pull tab after having been torn open, the pull tab is collapsible at the indentation and so is prevented from being depressed into the spout beyond the limit determined by the limit stop on the pull tab.
3. A gable top carton for containing a liquid product, comprising: a boxlike body having a closed bottom; a sealed gable top closing a top end of the boxlike body and having a pair of oppositely sloping sides with a ridge formed there-between; one of the sloping sides of the gable top having defined therein an aperture for pouring out the contained liquid product; and a mouthpiece of one piece plastic molding liquid-tightly closing the aperture in one of the sloping edges of the gable top, said mouthpiece including a lid having a pull tab projecting therefrom and being formed to include a substantially tubular spout protruding outwardly from the aperture in the gable top, the spout being open at an inner end to the interior of the body and having an outer end closed by the lid, said lid having a hinge end located close to said ridge and a tear end located away from the ridge, said lid being defined by a relatively shallow, linear first groove cut in the hinge end of the lid and by a second groove of greater depth than the first groove extending from the tear end of the lid toward the opposite extremities of the first groove along a pair of opposite sides of the lid, said pull tab being formed adjacent the tear end of the lid, whereby upon exertion of a force on the pull tab, the lid is torn along the second groove, the first groove serving to provide a hinge connection between the torn lid and the spout, said lid of the mouthpiece being knurled so as to diffusely reflect incident rays of light.
4. A gable top carton as set forth in claim 1, wherein the gable top of the boxlike body has a sealed ridge, and wherein the pull tab of the mouthpiece is formed to include a hook capable of engaging the sealed ridge of the gable top when the lid is torn open, for holding the lid open.
5. A gable top carton as set forth in claim 1, wherein the aperture in the gable lap and the spout and lid of the mouthpiece are all in the shape of a home plate as seen in a plan view, each having a blunt end directed toward the ridge of the gable top and a pointed end directed away therefrom.
6. A gable top carton as set forth in claim 1 wherein the spout of the mouthpiece tapers as it extends from its inner end toward its outer end.
7. A gable top carton as set forth in claim 1 wherein the retainer lugs on the spout are spaced from the flange a distance from about four to five times the thickness of each side wall of the gable top.
8. A gable top carton as set forth in claim 1 wherein the aperture in the gable top has one end extending linearly and parallel to a ridge between the pair of sloping sides of the gable top, wherein one of the retainer lugs is so located on the spout as to engage the edge of the gable top bounding the linear end of the aperture, and wherein said one retainer lug is spaced from the flange to a greater extent than are the other retainer lugs.
9. A gable top carton as set forth in claim 1, wherein the pull tab of the mouthpiece is formed to include a limit stop protruding therefrom for engaging the outer end of the spout when the lid is reclosed after having been torn open, thereby preventing the lid from being depressed too far into the spout.
10. A gable top carton as set forth in claim 9, wherein the limit stop on the pull tab of the mouthpiece is spaced from the lid.
11. A gable top carton as set forth in claim 9, wherein the gable top of the boxlike body has a sealed ridge, and wherein the pull tab of the mouthpiece is formed to include first and second hooks on its end away from the lid, the first hook being directed toward the sealed ridge for engaging same when the lid is partly torn apart from the spout, the second hook being directed away from the sealed ridge and being effective to engage the outer end of the spout when the lid, on being re-closed after having been torn open, is depressed into the spout beyond the limit determined by the limit stop on the pull tab.
12. A gable top carton as set forth in claim 1, wherein the mouthpiece is formed to include a reinforcing portion at the junction between the lid and the pull tab.
13. A gable top carton as set forth in claim 1 wherein the lid of the mouthpiece has a hinge end located close to a ridge between the pair of sloping sides of the gable top and a tear end located away from the ridge, the pull tab being located on the tear end of the lid so that the lid is tear-able from the tear end toward the hinge end so as to be left hingedly joined to the tubular body at the hinge end, and wherein the mouthpiece is formed to include a reinforcing portion at the junction between the lid and the pull tab, the reinforcing portion being located on that side of the pull tab which is directed toward the hinge end of the lid.
14. A gable top carton as set forth in claim 1 wherein the pull tab of the mouthpiece is joined to the lid via a constricted neck,
15. A gable top carton as set forth in claim 14, wherein the mouthpiece is formed to include a reinforcing portion at the junction between the lid and the constricted neck of the pull tab.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9587284U JPS6111520U (en) | 1984-06-26 | 1984-06-26 | Goebel top seal paper container with spout |
| JP95872/1984 | 1984-06-26 | ||
| JP224085/1984 | 1984-10-26 | ||
| JP59224085A JPS61104942A (en) | 1984-10-26 | 1984-10-26 | Spout for packaging vessel |
| JP16434384U JPH0333628Y2 (en) | 1984-10-30 | 1984-10-30 | |
| JP164343/1984 | 1984-10-30 | ||
| JP193559/1984 | 1984-12-20 | ||
| JP19355984U JPH0344658Y2 (en) | 1984-12-20 | 1984-12-20 | |
| JP20190684U JPS61117123U (en) | 1984-12-30 | 1984-12-30 | |
| JP201906/1984 | 1984-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1228333A true CA1228333A (en) | 1987-10-20 |
Family
ID=27525764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000485361A Expired CA1228333A (en) | 1984-06-26 | 1985-06-26 | Sealed gable top carton having a mouthpiece of one piece molding |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4669640A (en) |
| EP (1) | EP0167095B1 (en) |
| CA (1) | CA1228333A (en) |
| DE (1) | DE3579960D1 (en) |
| DK (1) | DK162488C (en) |
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-
1985
- 1985-06-21 US US06/747,450 patent/US4669640A/en not_active Expired - Lifetime
- 1985-06-25 DE DE8585107873T patent/DE3579960D1/en not_active Expired - Fee Related
- 1985-06-25 EP EP85107873A patent/EP0167095B1/en not_active Expired - Lifetime
- 1985-06-25 DK DK287785A patent/DK162488C/en not_active IP Right Cessation
- 1985-06-26 CA CA000485361A patent/CA1228333A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3579960D1 (en) | 1990-11-08 |
| DK287785A (en) | 1985-12-27 |
| EP0167095B1 (en) | 1990-10-03 |
| US4669640A (en) | 1987-06-02 |
| EP0167095A3 (en) | 1987-09-16 |
| DK287785D0 (en) | 1985-06-25 |
| EP0167095A2 (en) | 1986-01-08 |
| DK162488C (en) | 1992-03-30 |
| DK162488B (en) | 1991-11-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |