US 2750093 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
June 12, 1956 G. A. MOORE DISPENSING CONTAINER 2 Sheets-Sheet 1 Filed March 21, 1952 INVENTOR Geo/we A m/Na ro/v Moo/a5 June 12, 1956 G. A. MOORE DISPENSING CONTAINER 2 Sheets-Sheet 2 Filed March 21, 1952 l NV E N TO R GEO/P45 fi/eu/vara/vMoomsi United States Patent M DISPENSING CONTAINER George Arlington Moore, New York, N. Y.
Application March 21, 1952, Serial No. 277,799
Claims. (Cl. 229-5.5)
This invention relates to containers and more particularly to improvements in containers formed of a plurality of generally elongate blanks of relatively semi-rigid material which are assembled and connected in such a manner that they form a hermetically sealed enclosure adapted for efficient packaging of a large variety of consumer products, the container having structural embodiments affording facilities that constitute improvements for the general utility and handling of said container.
In fabricating containers for use in packaging many products such as hygroscopic food-stuffs and other similar commodities, which require a relatively strong light weight container capable of being properly sealed after filling, problems have been experienced in providing a leak-proof, non-absorbent, hermetically sealed structure which may be filled with the desired product and be hermetically sealed. Generally it has been discovered that a container which is satisfactory for a particular product intended for packaging is made of glass such as jars with metallic closures or tin cans, both types of which are too expensive to use. Many packers therefore resort to the use of folding carton type containers that contain sealed bags of relatively expensive character, or extraneous internal liners within the cartons and exterior wrappers around the said cartons. Such packing mediums require rather complicated machinery that take up considerable floor space as well as necessitating an inventory of unbalanced materials resulting in a generally expensive process of packaging.
It is a general object of the present invention to provide a container fabricated from selections of sheet material of various types which is substantially self-sustaining when formed, which is relatively strong and light in weight, which does not require separate inner bags or liners to contain the product and which is so constructed that it is adequately sealed at all seams, and when filled, may be efiiciently closed and provided with a permanent hermetically sealed closure, an efficiently sealed dispensing sub-closure being structurally provided within the areas of the opposite end closure of the container. The sheet material comprising the blanks of which the container is fabricated facilitate a better balancing of inventory of material.
More specifically, an important object of this invention is the provision of a container so constructed as to exclude interior edges of structural material to avoid detrimental moisture wicking action from or to the container contents. The interior surface of the container walls is covered with a substantially impervious plastic film having thermoplastic properties, such cut edges that would normally be structurally exposed within the interior walls of the container are turned outwardly and away from such interior exposure. Other interior edges are in abutment to plastically cover opposing wall surfaces and be thermally sealed thereto.
Another object of the present invention is to provide a container with means whereby the filling end thereof is closed with a permanent hermetic seal, the sealing pressure being substantially resisted by spring forces resulting r, 2,750,093 Patented June 12, 1956 from reversely folded members that comprise a part of the closure thus increasing the etliciency of the closure seal.
Still another object of this invention is to provide a container having an initial hermetically sealed dispensing sub-closure constructed into the base end closure of the container and which is integral with the side walls thereof.
Still another object of the invention is to provide a container made of relatively light guage sheet materials of various types, the structurethereof being reinforced to withstand rough handling, the corners, bottom, top and two side walls being provided with multiple layers of material in sealed engagement giving added strength to the structure of the container.
It is a more specific object of the invention to fabricate a container from a pair of generally rectangular blanks of cut and scored fibrous sheet material, which blanks are arranged with the central portions in superimposed relation and sealed together at the superimposed areas to form a plural-ply end wall structure. The integral end portions of each blank being folded into upstanding side wall forming relation with side marginal portions of the one blank being folded over into edge encompassing face engagement with surfaces of the other blank and being sealed thereto, whereby a container is provided having a smooth and impervious interior surface.
It is another object of the invention to provide a container formed from elongate blanks of sheet material composed of fibrous board and aluminum sheet material. The blanks are crossed and sealed in face engaging relation at a central area to form the container end closure with end portions of the blanks turned upwardly therefrom and connected at the edges and marginal surfaces to form the container side walls, wherein the blanks are provided on the inner surfaces with a sealing medium to seal the seams and afford a smooth integral inner surface devoid of any exposed edges of the blank material.
Still another object of the invention is to provide a container of the type described in which the blank material is characterized by an inner surface of thermoplastic material which is adapted to form when activated an integral bond between overlapping portions of the blank material and a continuous integral inner surface constituting a barrier to the passage of moisture vapor.
A further object of the invention is to provide a container of the type described wherein the ends of the crossed blanks are provided with end closure forming panel portions which are adapted to be folded and overlapped, the sealing pressure imposed to the overlapping panels being strongly resisted by inner panel formations that are reversely folded and interlocked with other panel portions to form a multi-ply reinforced closure for the container.
For a more detailed understanding of the nature and objects of the invention, reference should be had to the following description taken in connection with the accompanying drawings, in which:
Fig. 1 is a plan view of a sheet material blank assembly preparatory to the formation of a container embodying the principal features of the invention;
Fig. 2 is a perspective view of the completed container with the bottom forming or filling end open;
Fig. 3 is a perspective view of the container completely closed and sealed;
Figs. 4 and 5 are fragmentary cross-sectional views of the closure taken on the line 5-5 of Fig. 3;
Fig. 6 is a perspective view of the completed container, the dispensing end being shown uppermost;
Fig. 7 is a fragmentary view in cross-section taken on the line 77 of Fig. 6;
Fig. 8 is another fragmentary view in cross-section taken on the line 8--8 of Fig. 6;
Fig. 9 is a fragmentary view in perspective showing a step in opening the sub-closure dispensing arrangement of the container;
Fig. 10 is another fragmentary view in perspective showing the sub-closure open for dispensing the contents of the container;
Fig. 11 is a fragmentary view in elevation showing a modification in the closure arrangement for the container;
Fig. 12 is a fragmentary view in perspective showing the modified closure for the container, and
Fig. 13 is a fragmentary view in cross-section taken on the line 13- 13 of Fig. 12.
Referring to Figs. 1 to 3, there is illustrated a container (Figs. 2 and 3) formed from a pair of generally rectangular sheet material blanks which are cut and creased to divide the same into a plurality of wall forming panels, the blanks being initially assembled in crossed relation (Fig. 1) and thereafter folded into container forming relation with side margins of the blanks in overlapped seam or closure forming position and with overlapping seam portions being sealed to provide integral end and side walls and with end closure panels (Fig. 2) which are adapted to be folded and hermetically sealed, the folds being arranged to resist the sealing pressure to increase the efficiency of the seal after the container is filled with merchandise (Fig. 3).
The blank material employed may be any suitable kind of sheet material such as sheets formed of fibres, metals, plastics, resins or combinations thereof which have sufficient flexibility to permit the necessary folding or bending operations, which will form relatively rigid or semirigid containers, and which will permit the formation of bonded seam structures and hermetically sealed closures. Preferably, the blanks are formed of fibrous board having an extruded film on one surface thereof of polyethylene or any other suitable plastic film having thermoplastic properties, the thickness of such fibrous sheet being 0.010 to 0.020 inch. Other sheet material, such as aluminum foil (plain or laminated) may be from 0.002 to 0.004 inch thickness.
Referring particularly to Fig. 1 of the drawings, the assembly of the blanks illustrated comprises a pair of blanks which are crossed with each other and each blank is generally rectangular and symmetrical about their longitudinal and transverse center lines.
The blank 5 in the assembly is cut and divided by transversely extending longitudinally spaced score lines 6-6 to provide a central panel 7 having oppositely disposed parallel side edges 8. Side wall forming panels 9 extend from the transverse crease lines 6 in opposite directions on each side of the central panel 7. The side wall panels 9 terminate at transverse score lines 10 and 11 which are spaced inwardly of the end edges of the blank. Panel forming marginal end portions or panels 12 and 13 extend respectively from the transverse score lines 10 and 11 to the end edges of the blank. The central panel 7 is provided with a cut tongue 14.
The companion blank 15 in the assembly is cut and creased or scored to provide a central panel 16 which is defined by transversely extending longitudinally spaced score lines 17 disposed in parallel alignment with the edges 8 of the blank 5 and transversely spaced longitudinally extending parallel score lines 18, the latter being spaced inwardly of parallel straight side edges 19. Side wall forming panels extend longitudinally in opposite directions from the score lines 17 to transverse score lines 22 and 23. The panels 20 are defined along the side edges by outwardly longitudinally extending score lines 18 which are spaced inwardly from and parallel with the side edge portions of the blank. The marginal areas between the score lines 18 and side edges 19 of the blank are divided longitudinally into a central flange 24 and connecting flanges 25. The central flange is separated from the adjoining flanges 25 by generally V-shaped notches 26 which are located at the ends of the transverse score lines 17. The notches 26 are generally triangular in shape with flat apexes 27. One side of each notch forms the flange 24 and each opposite side is joined by parallel edges 28 of the flanges 25 which terminate at score lines 29 extending inwardly from the end edges and defining tab portions 30 which are separated from end panels 32 and 33 extending outwardly in opposite directions from the score lines 22 and 23 by cut lines 34. The marginal areas on the opposite side of the blank between the score line 18 and edges 19 are divided longitudinally into a central flap portion 35 and generally V-shaped notches 36 which are generally triangular in shape with flat apexes 37. One side of each notch terminates in semi-circular shaped portions 49 which are cut to separate the flap 35, the cuts terminating at the junction score line 18 then extending from the said junction in perforated cut lines 42 disposed parallel and inwardly from the parallel score lines 17 and parallel edges 8 of the blank 5. The cut lines 42 terminate inwardly of the opposite transverse score line 13. The opposite sides of the notches are joined by lug portions 43 and end portions 44 of the flanges 45 which extend in opposite directions and terminating in end tabs 39. The notches 26 and 36 do not extend to the marginal score lines 18, but the fiat apexes 27 and 37 thereof terminate a pre-determined distance outwardly of these score lines. Closure forming panels 32 and 33 extend outwardly of the transverse score lines 22 and 23 at opposite longitudinal ends of the blank. The score line 22 extends outwardly in offset relation to the score lines 29 at one end of the blank. The score line 23 at the opposite end extends outwardly in increased offset relation to the score lines 29.
The blanks of the assembly are covered on the upper faces with a suitable plastic film 46 having thermoplastic properties. Fibrous sheet material of which the blanks may be made, may be supplied from sources of supply with an extruded film of polyethylene thereon and in rolls from which the blanks may be printed with appropriate color decoration. While printing the sheet material on the opposite face of the material from the plastic film, an adhesive coating 47 may be applied to the faces of the end tabs 30 which are adjacent to the end panel 33.
The central panels 7 and 16 of the blanks are initially assembled by being adhesively secured face to face to areas extending inwardly and between the score lines 18 by the application of heat and pressure. The area extending between the cut lines 14 and 42 is preferably not sealed securely. The marginal area of the tongue 14 extending at one side of the blank to the transverse score line 18 and parallel marginal areas extending inwardly from the score lines 17 and terminating at the parallel perforated cut lines 42 are securely sealed together. The semi-circular portions 40 are not sealed during the initial assembly of the blanks. The pressure and heat is concentrated at the said sealing areas and While heat will migrate to the unsealed areas described the surfaces will slightly tack together and be adapted for separation as will be hereinafter described in more detail.
In forming the container the assembled blank 5 and 15 are folded and shaped to form the container 43 (Fig. 2) in the following manner. The panels 9 of the blank 5 which constitute end extensions integral with the central panel 7 are folded upwardly into side wall forming relation about the score or fold lines 6. The panels 20 of the blank 15 which constitute integral extensions of the central panel 16 are folded upwardly into side wall forming relation about the score or folding lines 17, the inner faces of these panels engaging in abutting relation with the edges 8 of the panels 9. The marginal edge connecting flange forming portions 24, 25 and 45 of the blank are folded about the score lines .18 into face engagement with the outer faces ofinner wall forming panels 9, the flange 24, semi-circular portions 40 and flap 35 extending along two bottom or end edges or corners of the container and the flanges and 45 extending along two upright sides of the container with opposing edges 19 in abutment. The notches 26 and 36, which are located at the four corners of the end wall formed by panels 9 and 20, are closed by the folding of the flanges 25 and 45 so that the side edges thereof abut and form a tight mitered corner between the adjoining flanges with excess material provided by the flat apexes 27 and 37. The end portion edges 28 of the flanges 25 close in abutment to the outer edge of the folded flange 24 (Fig. 3). The folded flanges 25 completely encompass the inner wall 9 extending from the base upwardly to the score lines 29 which serve as a junction for the side walls at the opposite end of the container. The opposite side wall 9 is encompassed by the folded flanges 45 (Fig. 2) with the edges 19 in tight abutment, except for a slightly exposed portion 49 formed by the flange ends 44 and the end edge of the folded flap 35. Inward portions of the lugs 43 overlap the flap to retain it in flat engagement with the outer surface of the inner wall panel 9. Heat and pressure are applied over the surfaces of the flanges 25 and 45 to activate the thermoplastic sealing medium and seal the contacting surfaces thereof to the inner Wall forming panels 9. During this operation, the excess material provided by the flat apexcs 27 and 37 when the notches 26 and 36 are closed, is forced inwardly tospread against the portions of the adjoining edges of the side walls adjacent the end of the container. The excess material is compressed to form a neat contour substantially flush with the adjoining surfaces of the flanges 25 and 45 (Figs. 2 and 3). Since the notches 26 and 36 terminate at the flat apexes 27 and 37 and short of the fold lines 18 the excess material occurs at and is compressed into the corners at the point where damage is most likely to be inflicted during subsequent service and handling of the container. The flat apex construction reinforces and strengthens the corners at the points of greatest vulnerability, where it is needed most to prevent leakage at the corners which frequently occurs in containers having conventional corner construction. The semi-circular portions 40 are compressed with heat and firmly secured to the outer surface of the inner wall 9, the flap 35 is not secured except it may be lightly tacked if desired. The outwardly disposed marginal surfaces adjacent the inwardly extending lugs 43 are securely sealed to the inner wall.
' The closure panels 12 and 13 and end tabs 30 are not heated during the sealing of the flanges 25 and 45, but are left in extended position, normally upright, for the filling of the container with the desired contents after which the container 48 is readily adaptable for closing and hermetically sealing. The twin panels 12 and 13 on the ends of the inner walls 9 and the tabs 30 on the ends of the outer walls, constituted by the overlapping and edge abutments of the folded flanges 25 and 45, are folded to interlock and form a highly resistant springing force to oppose downward pressure. The tabs 30 are pressed inwardly on opposite sides of the container which move the panel sections 12 inwardly bending on the score junction lines 10 of the inner wall panels 9. The end panels 13 are reversely folded outwardly in opposite directions to encase the folded tabs 30 as shown partially folded in Fig; 2. The plastic film face 46 on the panels 13 are now in up face position as shown in Fig. 4 just prior to being flattened downwardly in line engagements at their side edges with the scored lines (providing recesses) 22 and 23 which are folding lines for the end panels 32 and 33. The end panel 32 is then folded inwardly and downwardly to engage its plastic film inner surface with the up faced plastic film surfaces on the folded panels 13, then the opposite end panel 33 is folded inwardly and downwardly to engage its plastic film inner surface to the exterior surface of the folded panel 32. The reversely folded and interlocked panels strongly oppose and resists the downwardly folded and overlapping panels to such extent that when heat and pressure are applied to the exterior surface of the folded panel 33 the transfer of heat to activate the thermoplastic film layers of material is highly efl'icient resulting in a firm and secure bonding together of the closure contacting panel members. The double reinforced side walls support the reversely folded and interlocking panels of the closure thus supplying added strength to resist the required downward pressure to insure a hermetic sealing of the closure (Fig. 3).
The side edges of the folded panels 12, 13 and tabs 39 are tightly abutted into each side junction of the folded panels 32 and 33 substantially encased therein. The inner surface thermoplastic film engage the said side edges and the heat applied to activate the film securely seals these edges to the inner surface of the side walls in the region of the folded junctions of the overlapping end panels. These junctions are in offset relation with the folding junction lines of the adjacently folded panels to align and accommodate the tight encasement of the said edges.
A structural cross-section of the completed closure is shown in Fig. 5. The major sealing union of the closure is in plastic to plastic surface amply reinforced by the additional contacting layers of material being united together which have additional layers of plastic film. The reversely folded panels 12 and 13 produce plastically covered looped marginal portions 50 extending across and between the inner side walls of the container which surfaces are substantially impervious to moisture wicking action. In conventional containers of the class described the inturned straight flaps have usually raw wicking edges in addition to body seam edges interiorally exposed.
The hermetically sealed container 43 (Fig. 6) is shown in proper upright position with the sealed dispensing sub-closure at the top of the container. The sturdy and strong reinforcement of the sealed side walls is shown in Fig. 7 showing the inner walls 9 embedded in the inner plastically faced walls of the overlapping flanges 45. The whole interior of the container is smooth and not interrupted by any exposed cut edges of container fabrieating material. The structure of the two side walls of the container is adapted to strongly resist extraneous forces that may be imposed upon the container horizontally or vertically in direction such as stacking. The corner and side junctions are reinforced with multi-ply material.
A section of the dispensing sub-closure is shown in Fig. 8. The cut 14 which defines the tongue in the central portion 7 is covered by plastic film and the perforated cut lines 42 are located in offset relation thereto. The heat when used in activating the thermoplastic film will close the edges of the cut through the plastic film portion 14.
The sub-closure (Fig. 9) may be opened with the fingers by pulling the flap 35 outwardly and upwardly to disengage it from the locking members 40 which are secured to the inner walls of the container and from the retaining lugs 43 which are left resilient to spring outwardly to release the flap. The released flap 35 when disengaged from the locking members 40 is now provided with a pair of semi-circular cut out portions 52. Further upward movement severs the flap from the parallel perforated cut lines 42 removing the cut tongue portion 14 to expose an aperture 53 in the end of the container through which its contents may be conveniently dispensed. The parallel perforated cut lines extend substantially across the top of the container to provide any degree of opening desired. Many devices have been provided in conventional containers to serve as dispensing mediums however, they are provided without adequate means with which the opening may be efliciently closed hence, such devices fail to serve the purpose of further protecting the contents of the container during the dispensing periods which at times lengthen out many days or into weeks. The sub-closure dispensing arrangements of the present invention provides an eflicient lock to retain the reclosure and thus provide continued protection to the contents of the container after the initial seal of the dispensing sub-closure has been broken. To close the container the open flap 35 (Fig. 10) is pushed downwardly, the end edge is inserted inside of the resilient lugs 43 after which the flap is pressed further downwardly for the tongue 14 to again enter the cut aperture 53, the circular cuts 52 in the flap engage the locking members 40 drawing the severed flap taut thus overcoming the inherent spring characteristics of the material. The lugs 43 retains the restored flap in tight engagement with the locking members. The tongue 14 is held confined substantially in its original position thus affording a reasonably etficient and tight reclosure.
The container thus described is suitable for a wide variety range of products and especially those commodities that are hygroscopic and which deteriorate rapidly when subjected to moisture gain or loss. Powdered milk for example is most susceptible to moisture gain and will deteriorate rapidly unless it is protected against the ingress of moisture vapor. Substantial increase in the use and distribution of such inexpensive protein yielding product may be gained by a suitable container that can be produced relatively economical. The container herein described is suitable for the purpose and does not require relatively expensive containers hereinbefore described to accomplish the desired results.
The container 55 (Fig. 12) is a modified embodiment of the invention dealing with the opposite end closure to the dispensing end of the container. Fig. 11 shows the arrangement of the closure panels extending upright at the ends of the container walls. The end tabs 56 are like the end tabs 30 at the end of the flanges 25 and 45 on the blank 15. The inner walls encompassed by the overlapping flanges 57 terminate in winged portions 58 which are divided into two area sections by the score or folding lines 59. The side edges 60 are cut V-shaped at substantially 90 degrees. The adjacent side walls of the container terminate in the wings 62 which are also divided into two area sections by the score or folding lines 63 and the side edges are cut V-shaped at substantially 90 degrees. The wings are reversely folded so that the plastic faces on the wings 58 and 62 are in up face position (Fig. 12). The tabs 56 are folded inwardly to interlock with the reversely folded wings 58 and bridge through and across the abutted mitre joints 64 formed by the reversely folded wings 58 and 62. The mitred joints 64 connecting the flat surfaces of the folded wings 58 and 62 (Fig. 13) are closed and sealed by the inner disposed and interlocked folded tabs 56. The inwardly disposed edges 65 and 66 are looped and plastically covered, the structure being substantially as shown in Fig. 5. The cover 67 for the closure is a separate member from the container and is a strip of any suitable material having on its inner face a thermoplastic the same or compatible to the plastic film on the upturned faces of the folded wings 58 and 62. The cover strip 67 may be pre-cut to size to match the maximum area at the top of the container or, the strip may be supplied from rolls (printed if desired) and unwound to pass through a pre-heating tunnel which will heat the thermoplastic film to activating temperature just prior to the severing and positioning of the cover to the top of the container and then pressed thereon and be sealed securely to the plastic faces of the inwardly marginally folded surfaces around the container open end. Alternatively, the cover many be positioned to the top of the container and contacted upon its exterior surface with suitable heat sealing irons which will press and impart heat through the cover to activate the thermoplastic films in face to face contact and securely fasten the cover to the container in seam forming relationship. The reversely and inwardly folded wings around the container mouth exert a resisting force against the downward pressure required to efiiciently seal the cover to the container. A slight gap between the reversely folded wings 62 extends on each side of the container between the interlocked edges of the tabs 56 which affords desirable resiliency in the closure to absorb shock without imparting any damaging effects to the seams of the closure.
The containers described herein may be advantageously fabricated of composite sheet materials for example, the blank 5 (Fig. 1) may be made of aluminum and the blank 15 as herein described being of fibrous material. The containers may be fabricated of plain relatively heavy paper sheet material and printed with a sealing medium applied only to the regional areas constituted by the seams of the container and closures. After the container is formed it may be flushed or sprayed with resinous liquid materials such as vinyls or other suitable materials to render the container impervious.
While specific materials and particular details of construction have been referred to in describing the illustrated forms of the invention it will be understood that other materials and other details of construction may be resorted to within the spirit of the invention.
1. A container capable of holding liquids and being formed of cut and scored blanks of sheet materials of rigid and flexible characteristics, and said blanks being assembled together and folded on said score lines to provide four side walls arranged in opposing pairs and a closed end, said container comprising one pair of opposing rigid side walls being folded upwardly at right angles along two corner sides of an integral rigid end wall portion constituting an exterior wall portion of said closed end, the folded side walls each being provided with an upper extended foldable and rigid end closing panel, the other pair of opposing side walls being formed of longitudinal marginally opposed wall portions of the first folded pair of side walls, each of said marginal wall portions being rigid and provided with an upwardly extended foldable end margin thereof, and each of said wall portions being folded inwardly at right angles along the longitudinal corner edges of each corresponding first folded side wall so that the longitudinal end edges of each opposing pair of said other folded side wall portions meet in abutment substantially central of the wall formed that defines said other pair of opposing side walls, the interior surface of said integral end wall portion of the first folded pair of side walls being provided with a flatly disposed superimposed and adhered elongated aluminum flexible strip extending upwardly from two opposed end sides of the end wall to form an adhered interior lining over the entire surface of each of said other folded side walls and close said meeting longitudinal end edges in abutment, said end wall being also provided with a pair of opposed end side flanges being folded upwardly and inwardly and be disposed in adhered surface engagement with corresponding surface portions of said aluminum inner lining adjacent the end Wall lined portion, each of the two opposed marginal ends of said aluminum flexible strip being non-adhered and extended upwardly of said upwardly extended margin of each said other rigid side wall that is lined by said strip so that the short rigid margin non-adhered may be folded inwardly together with the lower half of the aluminum flexible margin, and the upper half thereof be folded upwardly over the longitudinal end edge of the short folded margin, then outwardly and downwardly upon the upper face thereof, and thereby form a pair of inwardly opposed multiple layer closure wall seating ledges, each ledge having the aluminum upper layer reinforced by the interleaf rigid margin upon which to seat marginal sides of one upper extended rigid wall portion of the adjacent pair of side walls when being folded to close the open end of said container opposite to the aluminum inner lined end wall.
2. The container as set forth in claim 1 wherein the rigid end wall portion of the first folded side walls being provided with a pair of openly spaced substantially parallel perforated lines that terminate at one corner side thereof to join with a pair of opposed slit lines in one of said end flanges folded upwardly of said corner edge, said superimposed aluminum strip portion of the end wall being provided with a U-shape tongue portion defined with a pair of opposed parallel weakened lines of the U, each being disposed inwardly in spaced relation to each of said perforated lines of the lower end Wall layer thereby providing a dispensing closure arrangement in said end wall adapted to expose an opening in the aluminum lining of the end wall when said perforated lines in the rigid wall are severed and the portion of wall thereby released causing said weakened lines that define the tongue portion of the aluminum flexible lining to sever and release said tongue adhered to the severed rigid wall portion and thereby effect said opening for dispensing purpose of said container through an opening having impervious edges and adjacent impervious surfaces.
3. The container according to claim 2 wherein said pair of slit lines in said one folded flange that connect with the pair of perforated lines disposed transverse thereof, being arranged in contour so that when being separated to initiate said opening of the dispensing closure, the resultant edges formed by said separated slit lines define a pair of opposed circular recesses disposed inwardly of sides of the released flange thereby leaving two outwardly adhered portions upon said aluminum lined strip disposed upwardly of lower nonadhered inwardly projected yieldable tabs that initially overlap side edges of the flangedownwardly of saidrecessed edges, said edges and non-adhered tab portions providing means with which to co-act together and retain the dispensing closure in closed position when being restored.
4. In a container made of fibrous and metallic sheet and being provided with a plurality of folded side walls arranged in opposing pairs having a closed end wall formed integral of said side walls, the end wall being provided with a dispensing closure arrangement formed of portions of a combination of said fibrous and metallic sheet materials, the closure being sealed and adapted to be manually opened and be reclosed substantially as initially formed, the closure comprising a flat and uniformly smooth fibrous end wall portion being integral of two opposing side walls of the container, said end wall being provided with two opposed integral end side flanges transverse of said side wall portions and being folded upwardly in coplanar relation to surfaces of the other pair of opposing fibrous side walls, the inner surface of said end wall'being superimposed with a flexible metallic strip selectively adhered thereto and having extended portions that are folded upwardly to line the interior surfaces of said other pair of folded side walls and being selectively adhered'thereto including the interior surfaces of said folded flanges of the end Wall, the superimposing portion of said metallic strip being provided with weakened lines defining a susbtantially central U- shaped wall section thereof being solidly adheredto the corresponding surface of said end wall, the fibrous end wall portion being provided with a pair of substantially parallel perforated lines that extend to a transverse folded corner edge of said portion each line being spaced outwardly of each adjacent weakened line of said U in the metallic strip 'portion'and' thereby 's'ealsaid perforated lines, one of said folded flanges of the end wall being provided with a pair of opposed slit lines that connect with said perforated lines at said folded corner edge and defining side edges of the flange including a pair of outer opposed adhered portions of the flange that forms upper portions of the adjacent side wall of the container, other lower adjacent adhered portions of said side Wall having a pair of inwardly opposed non-adhered yieldable tabs formed in an open section of the side wall, and said tabs being disposed in marginally overlapped surface relation upon marginal sides of said flange, thereby maintaining the surface of the flange in coplanar relation with the surfaces of the adhered portions of said side wall.
5. In a container according to claim 4 wherein said metallic strip constitutes the seal of the dispensing closure arrangement and may be opened by manual release of said flange portion that is non-adhered to the metallic strip, the flange being pulled outwardly and upwardly from said outwardly opposed adjacent side wall portions and cause said tabs to yield and slit lines to separate and sever said perforated lines to further release a portion of the fibrous end wall and metallic tongue adhered thereto from its weakened lines and thereby expose an opening through the metallic wall portion of the end wall coincident with said released tongue, including exposure of surface portions of the metallic wall adjacent the edge of the opening, and said exposure of the metallic wall extending downwardly over a central corner edge adjacent the adhered fibrous portions of said side wall, the exposed portions of the metallic wall including the edge of the opening therein'being impervious and therefore nonabsorbent to provide clean and sanitary dispensing of the contents from said container, said opening in the metallic wall upon being reclosed, having means provided with which to restore the dispensing closure arrangement in the end wall of the container substantially as structurally embodied therein.
' 6. In a container according to claim 4 wherein said metallic strip on the interior surface of the fibrous end wall and two opposed side walls, having the side edges of the strip in abutment upon the interior surface of the adjacent pair of side walls along their respective corner folded edges, thereby rendering the structure of said end wall and dispensing closure arrangement therein free of having any interior edge exposure of wicking fibrous material, the interior surface of said adjacent pair of fibrous side walls being coated with insulating thermoplastic material including fibrous Wall portions adhered to said metallic strip.
7. A container formed of a folded blank of paper board material provided with thermoplastic adhesive, and the blank being provided with a crossed strip of aluminumfoil provided with thermoplastic adhesive, the container being provided with four side walls folded of said blank and being arranged in opposing pairs to have a closed end wall provided with a dispensing closure arrangement, the container comprising a pair of opposing side walls being folded upwardly of two opposed corner side edges of the central wall portion of said blank, and said aluminum foil strip being superimposed upon the top face of said central wall in selectively adhered surface relationship, and extended portions of the strip being folded upwardly from two opposed transverse corner side edges of said central wall to form inner disposed wall portions of other marginal wall portions that are folded inwardly along longitudinal corner edges of the first folded side walls and be disposed upon the exterior face of the aluminum wall folded portions in selective surface adhered relationship, said central wall constituting said closed end wall, and the end wall being provided with two upwardly folded flange portions from two opposed transverse corner sides thereof that complement the second folded side wall portions and thereby form an adjacent pair of opposing side walls of the container being lined with said aluminum strip, the ends of said inner disposed strip terminating upwardly of top ends of the outer folded wall portions to provide each of said wall portions with foldable marginal portions, the outer wall margin being adapted to interleaf with the inner wall margin when being folded to provide a pair of inwardly opposed ledges to co-act with upper extended'foldable closure forming wall portions that are provided by the first folded pair of side walls when being folded to close the open end of said container, the aluminum foil wall portion superimposed upon said end wall of paper board, being provided with a defined central section of the wall being solidly adhered upon said paper board material of the end wall, and said paper board end wall being provided with two openly spaced perforated lines out therein, each line being spaced outwardly of the solidly adhered border of the central section of said aluminum wall portion and inwardly of other marginal adhered wall portions, one of said upwardly folded flanges of the paper board end wall being provided with a pair of outwardly opposed slit lines that meet said perforated lines at the folded corner edge of said flange, the surface of the flange disposed inwardly of said slit lines being non-adhered to the inwardly adjacent wall portion of aluminum, and the outer portions of the flange being adhered to said aluminum wall portion, a portion of the aluminum wall being exposed by bottom end edge portions of the outer side wall spaced upwardly of the end edge of the flange and thereby provide accessibility thereto, said bottom end edge portions being extended downwardly and inwardly on two sides to provide two opposed non-adhered yieldable tabs that overlap sides of the flange downwardly of the upper end edge thereof, and thereby keep the surface of the flange that is non-adhered in flat contact with the surface of the inner adjacent aluminium wall.
8. A container according to claim 7 wherein said aluminum foil strip is selectively adhered to the outer wall portion of the end wall closure and thereby imperviously seals the end wall and said dispensing closure arrangements embodied therein to exclude all edge portions of the two opposed side walls formed of folded portions of said first folded pair of opposing side walls and folded flanges of the end wall from being exposed in the interior of the container enclosure walls, the aluminum strip also providing top marginal portions thereof that when folded with other top marginal portions of the paper board side walls, providing impervious surface portions upon which to effect an impervious seal of other folded wall portions in contact therewith when closing the open end of the container in closure forming relationship, and thereby complement the impervious seal of the opposite end wall dispensing closure.
9. In a paper container having side walls and a closed end being provided with a dispensing closure arrangement having an impervious wall portion adapted to be opened for clean container dispensing purpose, said closure arrangement comprising an outer disposed end wall portion of the container being provided with a pair of openly spaced and substantially parallel perforated cut lines extended to a corner side of said end wall, said corner side defining a transversely folded flange portion of said end wall, the opposed sides of said flange being provided with inwardly and outwardly opposed portions being defined by a pair of opposed slit lines therein that terminate upwardly at said corner edge of the folded flange, each of said slit lines meeting with a terminal end of each said perforated line, the interior surface of said end wall being faced with a flatly disposed layer of flexible aluminum foil sealing said perforated lines and being selectively adhered upon said surface, and the foil being extended transversely thereof to be disposed in face contact with said folded flange, said outer side portions of the flange defined by said slit lines being adhesively secured upon corresponding surface portions of the inner disposed aluminum foil wall, a substantially central portion of the foil wall being adhesively secured upon the outer wall portion of the end wall to define a severable tongue shape portion having boundary spaced inwardly of said pair of perforated lines, and being adapted to be sheared open by action of its adhered outer wall after said flange portion thereof is manually lifted outwardly and upwardly to separate from said slit lines and sever said perforated lines, and thereby expose an opening through said foil wall having impervious edge coincident with said boundary of said securing adhesive, and impervious surface portion adjacent said impervious edge.
10. In a container of paper board having a plurality of side walls arranged in opposing pairs to define an open end adapted to be closed and sealed by foldable portions of said side walls being provided with surface adhesive to constitute a closure free of interior exposure of raw absorbent edges of paper board material, the closure comprising each wall of a first pair of said side walls being provided with an outer wall portion formed of said paper board and having an upper relatively short foldable marginal portion thereof provided with surface adhesive, each said wall being provided with an inner lined adhered wall portion of aluminum foil having an upper non-adhered marginal portion extending upwardly beyond said outer wall margin, each said outer wall margin and a lower corresponding margin of said non-adhered aluminum inner wall margin being folded together inwardly and downwardly at substantially right angles to the corresponding side wall, the extended non-adhered portion of the folded aluminum margin being folded upwardly over the longitudinal end edge of said folded paper board margin, then outwardly and downwardly upon the upper face thereof so that said paper board margin is interleaf of lower and upper folded margins of aluminum and thereby exclude interior exposure of paper board edges thereof, the opposed side edges of the folded marginal portions being disposed in tight closing abutment upon an upper corresponding interior surface margin of the second pair of opposing adjacent side walls formed of paper board provided with said surface adhesive, and thereby provide a pair of inwardly opposed aluminum faced paper board ledges upon which to seat surface portions of the closure forming wall portions provided by said adjacent side walls when being alternately folded to be disposed upon said ledges and said adhesive being activated to complete said closure in seam forming relationship.
References Cited in the file of this patent UNITED STATES PATENTS Re. 16,347 Bliss May 11, 1926 1,293,801 Kitt Feb. 11, 1919 1,899,311 Cassell Feb. 28, 1933 2,085,458 Walker June 29, 1937 2,246,097 Illges June 17, 1941 2,276,577 Hahn Mar. 17, 1942 2,323,505 Wilcox July 6, 1943 2,328,579 Pelosi Sept. 7, 1943 2,352,766 Bogue July 4, 1944 2,392,959 Van Saun Ian. 15, 1946 2,407,781 Guyer Sept. 17, 1946 2,417,104 Cope Mar. 11, 1947 2,524,766 Carroll Oct. 10, 1950 2,603,402 Strauss July 15, 1952 2,604,252 Bergstein July 22, 1952 2,682,987 Spiess July 6, 1954 FOREIGN PATENTS 485,040 Great Britain May 13, 1938