US 3233817 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Feb. 8; 1966 A. w. CASADY 3,233,817
PAPERBOARD PACKAGE WITH PLASTIC BAG INSERT FOR STORAGE AND SHIPPING 0F FLUIDS ;i; 3 Sheets-Sheet 1 Filed Feb. 24, 1964 QWWQA Feb. 8, 1966 A. w. CASADY 3,233,817
PAPERBOARD PACKAGE WITH PLASTIC BAG INSERT FOR STORAGE AND SHIPPING OF FLUIDS 1 3 Sheets-Sheet 2 Filed Feb. 24, 1964 Feb. 8, 1966 A. w. CASADY 3,233,817
PAPERBOARD PACKAGE WITH PLASTIC BAG INSERT FOR Filed Feb. 24, 1964 STORAGE AND SHIPPING OF FLUIDS 3 Sheets-Sheet 5 United States PatentOfiFice 3,233,817 Patented Feb. 8, 1966 This invention relates generally to the bulk fluid paperboard packaging art and more particularly, concerns a novel paperboard package using a plastic bag insert for storing and shipping of fluids, said package having means at one corner thereof for defining a normally closed protective chamber for the spout of said plastic bag whereby to protect same from breakage and/ or contamination during storage and shipment of the package, and to which access may be gained easily for dispensing the contents of said package.
Heretofore, prior package structures of the general character with which the herein invention is concerned, that is, those packages which may be used in lieu of glass or metal containers for the marketing, for example, of water products such as distilled water, nursery water, and the like, generally were provided with an exposed pouring spout protruding out of the container at the side or the top thereof. Not only were such spouts subject to contamination by accumulation of dirt, dust, etc. during shipping and storage thereof, but they were also subject to breakage traceable to their exposed position on the container. Packages of this character clearly are advantageous over the glass or metal container but the well known advantages frequently are outweighed by the disadvantages above enumerated. Thus, acceptance of prior packages of the general character concerned has been limited to a considerable extent. The invention strives to provide a structure which eliminates the above mentioned disadvantages over prior structures of this general character.
The primary object of this invention is the provision of a paperboard package for fluids, including a plastic bag insert for holding the fluid, having a dispensing spout secured thereto, said package being of generally rectangular configuration and having flap means to define at one corner of the package an interior chamber for housing the spout, said flap means including tear-oft portions whereby access may be gained to said spout for dispensing the fluid contents of the bag.
Another object of this invention is the provision of a paperboard package for fluids of the character described wherein co-operative means are provided on the package and on the spout for mounting the spout in a fixed position relative to the package whereby to prevent dropping of the spout into the package subsequent to the withdrawal of some of the fluid contents thereof.
A further object of this invention relates to the provisions of a package of the character described wherein an interior, normally enclosed chamber of triangular cross-' sectional configuration is provided at the upper corner of the package, said package being formed by. folding a single integral blank of corrugated paperboard and said chamber being defined by locking flap means provided integral with said blank, said locking flap means also having a key-hole slot formed therein and the spout of the plastic bag having a pair of oppositely disposed lug members arranged'on the circumferential surface of the spout whereby the spout may be inserted through said key-hole slot and axially rotated to form a bayonet connection whereby the spout is securely coupled to said locking flap with the end thereof disposed within the interior chamber.
Other objects of this invention are to provide a paperboard package for fluids of the character described which is economical to manufacture, ship and store both prior to and subsequent to filling; which is easily filled and assembled without the need for complex filling equipment; in which novel flap means are provided foldable to define a protective interior chamber for the spout on the plastic bag, said flap means including tear-off portions forming the exterior walls of said chamber and adapted to be detached to gain access to the spout and the contents of the bag; in which the spout is mounted in an easy pouring position within the upper corner of the package; and, in which said package structure is strong and rigid subsequent to the filling thereof.
The foregoing and other objects of the invention will become apparent from the ensuing disclosure in which preferred embodiments thereof are described in detail in the specification and illustrated in the accompanying drawings. It is contemplated that minor variations in the structural features thereof may occur to the skilled artisan without departing from the scope or sacrificing any of the advantages of the invention.
In the drawings:
FIG. 1 is a perspective view of the paperboard package embodying the invention with the spout chamber enclosed.
FIG. 2 is a plan view of the integral blank member foldable to form said package.
FIG. 3 is a fragmentary top perspective view of the package, said package being shown in condition for dispensing of the fluid contents thereof.
FIG. 4 is a view similar to that of FIG. 3 but showing the package in partially opened condition.
FIG. 5 is an enlarged partially developed top perspective View of the package illustrating an intermediate step in the folding of the blank member shown in FIG. 2 to form the interior protective enclosure according to the invention.
FIG. 6 is a fragmentary median sectional view of one corner of the package with portions thereof being shown in elevation to illustrate interior construction.
FIG. '7 is a perspective view of the plastic bag insert utilized as the fluid containing portion of the package, a portion of said bag being cut away to show interior construction thereof.
FIG. 8 is a perspective view of a modified form of the invention.
FIG. 9 is a fragmentary sectional view similar to that of FIG. 6, but of the modified structure shown in FIG. 8.
FIG. 10 is a fragmentary plan view of the integral blank foldable to form the package shown in FIG. 8.
FIG 11 is an enlarged fragmentary top perspective view of one corner of the package shown in FIG. 8, said package being in condition for dispensing of the contents.
Referring now to the drawings, in FIG. 1 the reference numeral 20 designates generally the package embodying the invention. The said package 20 is comprised of an outer body 22 of corrugated paperboard formed by folding of a single integral blank, designated generally as 22' in FIG. 2, and a flexible bag 24, preferably formed of polyethylene plastic, and disposed interior of said outer body 22. The flexible bag 24 is shown in detail in FIG. 7, same being formed of inner and outer bags 26 and 28 respectively of substantially rectangular shaped configuration. The inner bag 26 is smaller in width than the outer bag 28 and has common top and bottom edges 36 and 32 respectively, sealed by conventional heat sealing. Both inner and outer bags 26 and 28 are provided with neck portions 34 for filling. Subsequent to filling, the neck portions 34 are sealed as shown at 35. The bag 26 preferably is formed of a tube of polyethylene, while bag 28 preferably is formed by superposing a pair of polyethylene plastic sheets which are precut to the desired 2 U configuration and heat sealed along the edges thereof. Polyethylene plastic preferably is used because of its well known heat-sealing property. Other plastics or like fluid impervious material also may be utilized in lieu of the polyethylene plastic. Other bag configurations may also be utilized to advantage.
A cylindrical dispensing spout 36 also preferably formed of heat sealable polyethylene plastic material is secured at an upper corner of the bag 24 piercing one wall of both inner and outer bags 26 and 28. The spout 36 has a bottom annular flange portion 38 integral therewith and a pair of outwardly extending lugs or ears 4% oppositely disposed on the exterior circumferential surface of the spout 36 and spaced from the bottom flange portion 38. The spout 36 is joined to the inner and outer bag walls by heat-sealing the flange to the said walls. It must be noted that in the process of heat-sealing the flange 33 to the bag 24, the said one of the inner and outer bag walls are also sealably joined together at the flange 38. The flange 38 is disposed interior of the bag with the ear portions 46 being outside said bag 24. Open end 42 of the spout 36 communicates to the interior of the inner bag 26 while the mouth 44 is closed olf by an integral web 46. An annular groove 48 is formed in the spout 36 closely adjacent the web 46. When access is desired to the contents of the bag, web 46 is detached from the spout by slicing through the spout at groove 48 with a sharp instrument such as a knife blade or the like. The contents are thus kept sealed until desired. A cap 61 is provided for the mouth 44 of the spout and hence subsequent to the severance of the web 46 from the spout, the thus opened mouth 44 of the spout may be reclosed by engagement of the cap telescopically thereover.
The outer body of package 20 as shown in FIGS. 1, 3, 4, and 6 has a generally rectangular configuration and comprises rear and front walls 52 and 54, top and bottom walls 56 and 53 and side walls 60 and 62. A carrying handle may be provided by securing a handle-carrying strip 64 of conventional construction onto the front and rear walls of the package across the top Wall thereof. At upper left hand corner portion of the package there is provided a tear-off section generally designated by reference numeral 68. The tear-off section 68 generally defines the exterior of an interior chamber 70 of triangular crosssection capable of accommodating the protruding portion of the spout 36 therein.
The outer body 22 of the package 26 is formed by selective folding of the integral blank member 22 illustrated in FIG. 2. The blank member 22 is formed preferably of corrugated paperboard. For clarity and ease of description, the portions of the blank member which, when folded, form the respective walls of the package 20 are designated with identical reference numerals as said walls, but are shown primed.
The outer body 22' comprises a pair of panels 52 and 54 arranged on opposite sides of a narrow center panel 62. Panels 52 and 54' form into Walls 52 and 54 respectively of the package 20. Center panel 62 forms side wall 62 of said package. Each of the panels 52' and 54 is integrally connected to a side edge 72 of panel 62 along a fold line. As illustrated, panels 52' and 54' are substantially identical in size and the center panel 62 is less than one-half of the width of said panel 52' or.
54 thereby to form the package 20 of rectangular configuration. The dimensions of the respective panels may vary in accordance with the particular size and content requirements of the package 20. Each of the panels 52' and 54, along the side edges 74 and 74' respectively, is hingedly connected along a fold line to respective flanges and 6t)". Flanges 60 and 6t)" cooperate when placed in superposed relationship to form wall 60 of package 20. Panel 52 is provided with a top flap 56 and a bottom flap 53. These flaps are connected to the top and bottom edges 76 and 73 respectively of said panel 52 at a fold line. Panel 54' is provided with similar top and bottom flaps 56 and 58" respectively. Said flaps 56 and 58" respectively are connected along the top and bottom edges of the panel 54 at its edges 76 and 78' along a line of fold. The center panel 62 has a pair of flaps St) at the top and bottom edges 82 and 84 thereof connected along the fold lines shown. Flange 60' has a bottom flap 86 and a top flap 88 hingedly connected respectively along the bottom edge 90 and top edge 92 along the fold lines shown. Flange 60" has a locking flap 94 hingedly connected at the top edge 96. The fold line along edge 74 terminates short of edge7 6' in a slot 98 formed when cutout portion 97 is severed from the blank. Severance of cut-out portion 97 from the blank member also provides a slot 100 in the locking flap 94. Said slot 160 extends across the width of the flap 94 parallel to edge 96. A fold line 162 is provided to extend across the remaining width of flap 94 to divide flap 94 into a pair of sections 104 and 196. A punch-out portion 108 is provided in section 104 to form a keyedslot 110 as shown in FIG. 3. Slots 112 are provided to space all but one of the flaps one from the other. Flap 88 abuts the left hand edge of flap 56.
Panel 52 is provided with a triangular section at the 11p per left hand corner defined by tear lines 114 along the portion of fold 74 and diagonal tear line 116 in the upper left hand corner of panel 52'. The tear line 116 meets tear line 118 formed in flange 60' perpendicular to tear line 114 and tear line 120 provided in flange 56' and lying perpendicular to edge '76. Similar tear lines 122, formed at the upper right hand corner of panel 54' and 124 formed perpendicular to edge 76 formed in panel 56" are provided. The tear line 120 defines a portion 126 of flap 56, while tear line 124 defines a portion 128 of flap 56". The flap 56 has a slot 130 formed therein and extending inward a distance from the free edge 132 approximately equal to the depth of slot 196 formed in flap 94, said slot 136 widening at its open end. Said flaps 56 and 94 cooperate to serve as locking flaps for the package 26 by engagement of flap 94 at the fold line 102 within slot 139 as shown in FIG. 5. Semicircular cut-out portions 134 are formed respectively in flaps 88 and 56", the latter being formed in portion 128 of flap 56". The cut-out portions 134 provide a pair of notches 134' which serve as gripping means to permit one to grasp portions 88 and 128 to disengage the tear-off portion 68 whereby to expose chamber 70.
The package 20 is formed by first filling the flexible bag 24 with fluid and sealing the neck 34 thereof at edge 35. The filled bag 241s then positioned upon panel 52' with spout 36 facing away from the panel 52. The panel 62' is then folded along its edge 72 common with the panel 52', and panel 54' is thereafter folded along the edge 72 of panel 62 whereby panel 54 is positioned juxatposed over panel 52' with the filled bag 24 sandwiched therebetwen and the panel 62 disposed in a plane normal to the then parallel plane of panels 52' and 54. Panel 60" is then folded along the edge '74 of panel 54' whereby the free edgo 136 of panel 60" abuts the panel 52' along the edge 74 thereof. Flap 94 is thereafter bent obliquely along the edge 96 of flange 66" and the spout 36 of bag 24 is inserted through the key-hole slot 110 by rotating said spout 36 to align ears 40 with the notches of the key-hole slot 110, the spout thereafter being rotated in an opposite direction whereby the marginal portions of section 104 of flap 92 surrounding the key-hole slot 110 engage between ears 40 and the flange 38 of the spout. The resilience of the filled bag will tend to aid this latter movement. Thus the spout is fixed in position with the section 94 defining the inner wall of the chamber 70 and the spout 36 extending thereinto coupled therewithin by the cooperating coupling means comprising slot 110 and ears 40.
Flap 56" is then bent at a right angle relative to panel 54' and flap $4 is engaged within slot 130; at the line of fold indicated at 102 Thus the panels 56" and 94 are locked one to the other, with section 106 of panel 94 being obliquely bent at said fold line 102 whereby to be placed in surface to surface contact with said panel 56". Flange 60' is then bent at a 90 angle relative to panel 52' to be-placed in surface to surface contact with flange 60" whereby to form the side wall 60 of the package 20. Flap 88 is thereafter bent at a right angle relative to flange 60' and is positioned in surface to surface contact with flap 56"; the top flap 80 of panel 62 is bent at a right angle relative said panel 62' to bring same in surface to surface contact with the flap 56" and thereafter, the top wall 56 of the package 20 is completed by bending fiap 56 at a right angle relative to panel 52'. Suitable adhesive may be applied to facing portions of the flap whereby fixedly to secure the flaps one to the other as indicated. Only flap 88 is notadhesively secured in position, but is held in position frictionally by its being sandwiched between flaps 56' and 56". The top edges of the top wall 56 may merely be sealed by strips of adhesively coated tapes 93 in FIG. 1 in lieu of or in addition to the adhesive coating of the respective fiaps.
; The bottom wall 58 of the package 20 is formed by sequentially folding bottom flaps 80, 58", 86 and 58 at their junctures with the respective panels 62', 54', flange 60 and panel 52' along the lines of fold respectively indicated at 84, 78, 90 and 78. The said bottom flaps preferably may be thus folded in the sequence named, but other folding sequences may be used substantially with equal advantage. Like the top wall 56, the bottom wall 58 may be sealedby application of suitable adhesive to the respective flap surfaces and/or by securement of an adhesive coated tape 93 along the edges thereof. The side wall 60 may also be retained in position by adhesively coating the facing surfaces of flanges 60' and .60" along a portion thereof defined between the tear-line 118 and bottom edge 90. The package 20 may then be finished off by application of carrying handle 64 thereto. Now the package 20 is in condition for delivery to the market.
I The description of package 20 will now proceed with reference to the procedure utilizedto gain access to the fluid content thereof. For this purpose reference is made particularly to FIGS. 4 and 5 of the drawing. In order to gain access to the chamber 70 wherein the spout 36 is enclosed, one must detach the tear-off portion 68 from the package 20. This may be accomplished by first tearing off the section 126 of flap 56 along the tear-line 120 thereby exposing flap 88. Portion 140 of flange 60' as defined by tear-lines 114. and 118 with fold line 93 is then detached along said last mentioned tear-lines. Flap 88, which is hingedly secured to said portion 140 at fold-lines 92, then is withdrawn from its position between flaps 56 and 56", exposing section 128 of flap 56". The section 128 is then grasped at notch 134' and' torn along tear-line 124. The corner portions of panels 52 and 54 are detached therefrom along the tear-lines 116 and 122 respectively. The detachment of said corner portions may occur immediately subsequent to.detachment of sections 126 and 128, perhaps with the same continuing motion.
Thus the spout 36 is rendered accessible. Thereafter, the cap 61 is removed, andthe web 46 of the spout 36 removed by slicing same off the spout at groove 48 thereof. The package 20 is now in the condition ready for dispensing of the fluid contents thereof as shown in FIG/3. The cap 61' may be then replaced upon the spout 36 so as to protect the undispensed contents of the package.
Reference is now made to FIGS. 8 to 11 wherein a modified form of the invention is illustrated. The package comprising a modified form of the invention is. generally designated by reference numeral 220, with the parts thereof where identical to those of package 20 being designated by like numerals preceded by the number 2 both with reference to the completed package and to the integral blank member from which the outer body thereof is formed. Reference may be made to the description of package 20 for definition of the parts thereof identical with those of package 220. Attention will be devoted hereinafter to describe only the differences between package 220 and package 20.
In the blank member 222, the tear-lines 116, 120, 122 and 124 formed in integral blank member 22' are absent from blank member 222'. In lieu of the sections 126 and 128 formed in flaps 56' and 56" of blank member 22, there are provided in flaps 256' and 256", semi-circular notches 257 and 259 formed by punching out cut-out portions 261 and 297. These notches 257 and 259 are adapted to be aligned when flaps 256' and 256" are brought into surface to surface engagement thereby to constitute the top Wall 256 of package 200. The panels 252' and 254' are imperforate. In the finished condition of the package 220, flap 288 of flange 260' is sandwiched between flaps 256 and 256".
To gain access to the contents of package 200, one detaches only section 240 by grasping flap 288 and withdrawing same from its frictional engagement between flaps 256 and 256". The flap 288 is then pulled downward along tear-line 214 and outward along tear-line 218, thereby detaching the tear-off portion 278 from the package 220.
Thus access to the spout 236 is obtained. Access to the contents of the bag 224 is obtained in a similar manner as described in connection with package 20, the bag 224 being identical to the previously described bag 24.
It should be noted that the chambers and 270, once exposed, may be temporarily covered by reinserting flaps 88 and 288, respectively, between the flaps 56' and 256" respectively.
. It is believed that the invention has been described in suflicient detail to enable the skilled artisan to understand and practice the same. The invention has been pointed out in the claims hereto appended in language intended to be liberally construed commensurate with the scope of the invention.
What is desired to be secured by Letters Patent of the United States is:
1. 'A fluid dispensing and shipping package comprising:
(a) a flexible, collapsible plastic bag adapted to be (b) said bag having a spout fixedly attached thereto,
said spout extending outwardly from the said bag,
(c) said spout having lug means formed thereon,
(d) a rigid outer paperboard box formed about said plastic bag by selective folding of a blank,
(e) said box having a rectangular configuration cornprising front and rear Walls, top and bottom walls,
and a pair of opposite isde walls,
(f) flap means hingedly connected to the upper ends of said plurality of said walls,
(g). said flap means including a pair of interlocking (h) said pair of interlocking fiaps forming an interior,
normally enclosed chamber at an upper interior end 'of said box,
(i) said enclosed chamber being of sufficient crosssectional area to accommodate said spout therein,
(j) cooperating means formed in one portion of said interlocking flap means to permit said lug means on said spout to pass therethrough, whereby said spout may be rotated to prevent withdrawal of said spout from said chamber during dispensing of fluid from said bag,
I (k) said flap means having other portions thereof with preformed score lines therein, said other portions being situated in the said upper end of said box,
(1) said other portions being severably detached from said box along said score lines to expose said normally concealed chamber and said spout positioned therein.
2. The package as claimed in claim 1 in which one of sa d pair of interlocking flaps is hingedly secured to one of said side Walls and the other of said pair of flaps is hingedly secured to one of said front and rear walls, said one of said pair of interlocking flaps having the said cooperating means formed therein, said cooperating means comprising a keyed slot.
3. The package as claimed in claim 1 in which said interior chamber is of triangular cross-section.
4. The package as claimed in claim 1 in which said one portion is secured to the side Wall of the body and is disposed obliquely relative said side wall and includes an end portion sandwiched in the top wall of the body.
5. The package as claimed in claim 1 in which said other portions comprise the upper portion of said side wall facing said one portion.
6. The package as claimed in claim 1 in which said other portions comprise portions of said front and rear, top and side walls together defining the upper corner of the body.
7. The package as claimed in claim 4 in which said top Wall is provided with aligned notches opening to the interior of said chamber when said end portion is removed from its position.
8. The package as claimed in claim 1 in which said blank member includes a pair of like panel members of rectangular configuration arranged on opposite side edges of a relatively narrow center panel, said like panels being cojoined hingedly at their respective side edges to said center panel, each of said like panel members having an outwardly extending flange member hingedly connected thereto at its respective other side edge, said like panels and said center panel each having top and bottom end flaps, one flange member having top and bottom flaps and the other flange member having an elongate top end flap, said top end flap and the next adjacent top end flap of the respective like panel having interengagingslot means whereby to serve as looking flaps in the as-' sembly of the package, said elongate end flap being disposed obliquely relative the said other flange member where'by to define with the pair of like panels and the said one flange said interior chamber, and the said other portions include that portion of the said one flange serving as a wall of said interior chamber.
9. A rigid package for storing and shipping of fluids and including a pre-filled flexible plastic bag insert having a dispensing spout sealing adhered thereto, said package being of substantially rectangular configuration and formable by selectively folding a blank member around the filled bag, said package having front, rear, side, top and bottom walls, said top walls including a pair of interlocking flap members, one of said flap members being secured to one portion of the side wall and being obliquely disposed relative thereto interior of said package to define, With the top, front, rear and the other portion of the side wall a normally enclosed chamber of triangular cross-sectional configuration adapted to receive one end of the spout therein, said one of said flap members having keyed slot means formed therein cooperable with said spout having key portions formed thereon for preventing withdrawal of the spout from the chamber, and portions, including said other portion of the side wall, severably detachable from said package along pre-formed score lines to establish access to the spout for dispensing of the fluid contents of the plastic bag.
10. A package for the shipping and storing of fluids comprising: an outer body of generally rectangular configuration formed of corrugated paperboard, and a pre fillable flexible bag liner of heat-scalable material disposed within the outer body and having a dispensing spout 8 sealably adhered thereto at one corner thereof; said liner adapted to be disposed within said outer body with the outer body being formed by selectively folding a blank member therearound; said blank member having three panels arranged side by side; two of said panels being hingedly connected along the opposite side edges of the third panel along a respective line of fol-d; said two panels each having an outwardly extending flange hingedlyconnected thereto at a respective one side edge thereof; each flange being of a width substantially the same as the width of said third panel; each of said threepanels having top and bottom end flaps spaced one from the *nexbadjacent end flap; one of said flanges havinga first top extension and the other of said flanges having a'secon'd top extension; said other of said flanges having a bottom flap spaced from the next adjacent bottom flap; said flanges being of unequal length with said one' of's'aid flanges being shorter than the other of said flanges, and said first top extension being longer than said second-topextnsion; said first top extension having a first slot -"formed therein opening to an inner side edge thereof "and 'its next adjacent top flap having a second slot formed therein opening to a top free edge of said flap; said first top extension adapted to engage in locking relationship with the next adjacent top flap with said first top extension having a portion obliquely disposed relative the said one of the flanges; the other one of the flanges having a severable portion defined by a tear-line formed therein extending across the width of said last-mentioned flange and a tear-line formed along the hinged connection between the said flange and the next adjacent panel; said-two of said panels adapted to be folded along complementary angles relative said third panel to form the frontand rear walls of said package, said third panel thereby forming one side wall of said package; said pair of flanges likewise being folded along complementary 90 angles relative their respective panels and cooperating to form the other side wall of the package, said'top end flaps and said second top extension being folded at 90 relative their respective panels and flange, same cooperating to define the top wall of said package; and, said bottomend flaps and bottom extension also being foldable at 90 relative their respective panels and flange, same cooperating to form the bottom wall of the package; the tear-off portion thereby being disposed aligned with the obliquely disposed first top extension; said tear-off portion and said first top extension defining with the top wall of the package, an interior, normally enclosed chamber of triangular cross-sectional configuration; said first top extension having keyed slot means adapted to receive the end of the spout therethrough and key means formed on the spout for coupling the spout to the said first extension with the end of the spout interior of the chamber, access being gained thereto by detachment of the tear-off portion from the package; and means for sealing the package in assembly.
11. The structure as defined in claim it in which a pair of diagonal tear-lines are formed in opposite top corners of said first two panels and their respective top end flaps, whereby to permit detachment of both the tear-off portion and all but the obliquely disposed portion of said first extension which mounts said "spout.
References Cited by the Examiner Roak et al. 229-14 X RGE Q, RALSTON, Primary Examiner.