US3259303A - Resealable flexible container - Google Patents
Resealable flexible container Download PDFInfo
- Publication number
- US3259303A US3259303A US401072A US40107264A US3259303A US 3259303 A US3259303 A US 3259303A US 401072 A US401072 A US 401072A US 40107264 A US40107264 A US 40107264A US 3259303 A US3259303 A US 3259303A
- Authority
- US
- United States
- Prior art keywords
- web
- container
- portions
- extending
- hermetically sealed
- 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 - Lifetime
Links
- 230000001070 adhesive Effects 0.000 claims description 14
- 239000000853 adhesives Substances 0.000 claims description 14
- 210000001138 Tears Anatomy 0.000 claims description 13
- 239000000463 materials Substances 0.000 description 8
- -1 polyethylene Polymers 0.000 description 8
- 229920000298 Cellophane Polymers 0.000 description 6
- 239000004698 Polyethylene (PE) Substances 0.000 description 6
- 229920000573 polyethylenes Polymers 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixtures Substances 0.000 description 3
- 229920000098 polyolefins Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004820 Pressure-sensitive adhesives Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007789 gases Substances 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 238000000034 methods Methods 0.000 description 2
- 229920000728 polyesters Polymers 0.000 description 2
- 229920001155 polypropylenes Polymers 0.000 description 2
- 229920005989 resins Polymers 0.000 description 2
- 239000011347 resins Substances 0.000 description 2
- 229920005992 thermoplastic resins Polymers 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 281000015292 The Dow Chemical Company companies 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000011248 coating agents Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite materials Substances 0.000 description 1
- 229920001577 copolymers Polymers 0.000 description 1
- 235000013365 dairy products Nutrition 0.000 description 1
- 239000000796 flavoring agents Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000011888 foils Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquids Substances 0.000 description 1
- 229920001291 polyvinyl halides Polymers 0.000 description 1
- 229920000131 polyvinylidene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solids Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substances Substances 0.000 description 1
- 239000000758 substrates Substances 0.000 description 1
- 229920001169 thermoplastics Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5827—Tear-lines provided in a wall portion
- B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
-
- 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
- B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
- B65D2575/52—Details
- B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
- B65D75/44—Individual packages cut from webs or tubes
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
- B65D75/44—Individual packages cut from webs or tubes
- B65D75/46—Individual packages cut from webs or tubes containing articles
Description
July 5, 1966 J. P. REPKO 3,259,303
RESEALABLE FLEXIBLE CONTAINER Filed Oct. 2, 1964 I 2 Sheets-Sheet l INVENTOR- John Rep/( y 1966 J. P. REPKO 3,259,303
RESEALABLE FLEXIBLE CONTAINER Filed Oct. 2. 1964 a Sheets-Sheet 2 INVENTOR. John P. Rep/ 0 BY W KITTORNEY United States Patent 3,259,303 RESEALABLE FLEXIBLE CONTAINER John I. Replro, Beaverton, Micln, assignor to The Dow Chemical Company, Midland, Mich, a corporation of Delaware Filed on. 2, 1964, Ser. No. 401,072 3 Claims. (Cl. 229-66) This invention relates to a flexible container and more particularly to a flexible container including an easy opening means and a rescaling means.
Flexible containers, such as are employed in the packaging of meat, dairy products, and similar foods, are generally produced from a web containing at least one heat scalable, thermoplastic resin surface. The plies of the container, generally of rectangular shape, are heat sealed at two or more edges of the container and may contain gussets for easier accommodation of the product to be packaged. These containers may be provided with an opening means such as a tear string. In many instances when certain types of gases are used as a flush to assure content protection, even in completely sealed packages or where vacuums are drawn, the tear string has proven to be impractical to use as an opening device because of a wicking action (through the string) which allowed loss of gases and/ or vacuum causing shorter shelf life and in instances complete spoilage of contents. Therefore, such containers are generally opened by the use of a foreign implement such as a knife or scissors. Frequently the opening of the container is done in such a manner as to make further use of the container impractical. In many instances the contents of the container are only partially used and it is desirable therefore, to provide opening means which do not impair the further use of the container, and, in addition, provide a means for resealing the package to protect the contents from the atmosphere which may cause the contents to lose flavor or even spoil.
It is therefore the object of the present invention to provide a container which seals, hermetically, the contents and provides an easy opening means and a rescaling means for further storage of the contents.
It is another object to provide such a container wherein the easy opening means form-s a part of the web of material comprising such container and which requires no foreign implements for opening.
Other objects and advantages will become apparent hereinafter.
The objects of the present invention are accomplished by a generally flat, hermetically sealed, pouch-like container having opposite transversely sealed sides, such container being prepared from a thermoplastic web in which at least the inner surface of the web is composed of a heat scalable thermoplastic resin, and being further characterized by having means on a major surface of such container for easy opening, without utilization of foreign implements, and additional means for rescaling the container, following removal of at least a portion of the contents thereof.
More particularly, the container comprises a web enveloping the contents so as to overlap on one face of the contents, the inner lap only partially covering a portion of the contents, with the outer lap being hermetically sealed to the inner lap by a reclosable pressure sensitive adhesive means; and having weakened tear lines on the non-overlapped portion of the outer lap of the sealed face, such tear lines being disposed interior of and generally parallel to the transverse hermetically sealed sides.
Reference is now made to the drawings for a more detailed description of the invention in which:
FIGURE 1 is a schematic illustration of the manner in which the easy opening and rescaling means of the 3,259,303 Patented July 5, 1966 present invention may be incorporated into a container production line;
FIGURE 2 is a perspective-like view of a container embodying the principles of the invention;
FIGURE 3 is a perspective-like view of a container embodying the principles of the invention, being opened; an
FIGURE 4 is a perspective-like view of a container embodying the principles of the invention, being reclosed.
Referring now to FIGURE 1, a composite web 10 having an inner heat scalable polyethylene resin surface 12 and an outer superimposed cellophane surface 13 said cellophane surface containing a series of perforated tear lines 14 of predetermined pattern, is supplied from roll stock 11. The web is passed under the object 15 to be packaged .with the heat scalable surface 12 in contact with the bottom of .the object. The edge 16 of the web 10 remote from the tear lines 14 is then folded around one side of the object 15 by means (not shown) to provide an inner web portion 17 extending part way over the top of the object. A double coated, pressure sensitive adhesive tape 18 from supply roll 19 is then affixed to the outermost surface of the inner web portion 17 by the applicator .20 in a position remote from, but essentially parallel to, the edge (21) of the inner web portion. The opposite edge 22 of the web 10 is then folded around the uncovered side of the object by means (not shown) to provide an outer web portion 23 extending along the top of the object and in overlapping relationship with the inner web portion 17 and the adhesive tape 18. Roller means (not shown) are used to apply pressure to the adhesive area to provide the desired seal. These portions of the Web extending over the uncovered edges of the object are then transversely heat sealed and cut into desired lengths by means well known in the art thereby forming a hermetically sealed container. The tear lines 14 are positioned in a manner to provide an opening for the removal of container contents 15 when the outer web portion 23 is pulled away from the adhesive 18 and the fixed inner web portion 17.
FIGURE 2 shows substantially the hermetically sealed container prepared by the techniques illustrated in FIG- URE 1, and additionally illustrates the uppermost edge 24 of the outer web portion 23 which edge extends beyond the adhesive tape 18 to provide a lift-up means for assist in opening of the container. FIGURE 2 also illustrates an optional heat seal area 25 extending between the transverse heat sealed end portions in a position adjacent to and essentially parallel with the adhesive tape 18. Such additional seal is sometimes advantageous when utilizing webs composed of difiicultly bonded materials such as cellophane and polyethylene and, when used with such combination, may be easily separated when opening the container.
FIGURE 3 shows substantially the container of FIG- URE 1 being opened. The outer web portion 23 has been pulled away from the adhesive tape 18 and the inner web portion 17 and drawn back over the container contents 15 along the path provided by the tear lines 14, to provide an opening for the removal of the container contents.
FIGURE 4 shows the container of FIGURE 3 being rescaled following removal of a portion of the container contents. The outer web portion 23 has been drawn back over the container opening and reapplied to the adhesive tape 18 to form an essentially hermetically sealed container.
The outer surface of the web 10 may be perforated or scored either prior to wind-up as roll stock or just prior to fabrication into a container. When using webs formed of laminated film plies, it is generally desirable to produce the perforated or score ply forming the outer sur face of the web prior to lamination with the inner surface of such web.
The nature of the perforations introduced is not critical and may be in any shape, i.e., a continuous row of round holes, square holes, slits, and/or cuts punched at varying intervals or, when using a Web composed of a single ply of film material, scoring; the function of such perforations being to assist in the tearing of the web in the line of perforation. Further, the perforation or scoring may be of any desired pattern to provide an opening of desired size and contour for easy removal of the container contents. It has been found to be desirable when packaging items such as sliced process cheese or sliced luncheon meats, for example, to position tear lines along the outermost edges of the top of the container in such a manner as to provide perforations or scoring extending from the lower edge of the inner web portion 21 at a point immediately adjacent the heat sealed ends of the container.
Any conventional adhesive material may be employed in place of the double coated, pressure sensitive tape as herein illustrated. Exemplary of such alternate materials are transparent or opaque liquid or semi-solid adhesives applied in an essentially continuous manner. It is only essential that such adhesive is of the type which retains its adhesive powers even after exposure to the atmosphere, and which will stick to another surface merely by the application of pressure. Further, such adhesive may be applied in a single continuous band of any desirable width, or in one or more rows. Such adhesive may, alternatively, be applied to the heat sealable surface 12 of the inner web portion 17 if desired.
As previously mentioned, the web employed in the manufacture of the containers of the present invention can be formed of one or more polymeric substances such as a polyolefin and particularly polyethylene or polypropylene, a polyvinyl halide, a polyvinylidene halide and copolymers and interpolymers thereof, or may be formed by coating a substrate such as cellophane, paper, foil, or polyester web with one of the aforementioned polymeric materials or one or both of the surfaces of such webs.
Preferred materials employed in the construction of the described containers are laminated web structures of superimposed polyolefins such as polyethylene or polypropylene on transparent materials such as cellophane, saran or polyester; of the polyolefins, polyethylene is preferred.
Although the present invention is described in terms of heat sealing, since such is preferably used, the various components of the container may also be sealed by the use of appropriate adhesive or other means capable of forming a hermetically sealed container.
The container has been described in terms of being composed of flexible webs. Again it is possible to vary such construction without affecting the use and advantage of the easy opening and resealing means of the present invention by utilization of single or separate webs.
Further, the web employed may in said instances be composed of one or more semi-rigid or rigid sheets. Other combinations and container constructions in which the present invention can be employed will be apparent to those skilled in the art.
It is to be understood that the foregoing description of the invention is not intended to limit the scope thereof, except as defined in the appended claims.
What is claimed is:
1. In a generally flat container having an object packaged therein, said container having first and second hermetically sealed end portions, first and second side portions and a bottom and a top, said container being prepared from a flexible web in which at least the inner surface of said web is heat scalable resin, the improvement consisting of: easy opening and resealing means on said top comprising (a) a fixed inner web portion integral with said first side portion being hermetically sealed to said first and second end portions; (b) pressure sensitive resealable adhesive means afiixed to the outermost surface of said inner web portion remote from and essentially parallel to the lower edge of said inner web portion and extending between said first and second end portions; (c) an outer web portion integral with said second side portion and extending in overlapping relationship with said inner web portion and said adhesive means; and (d) first and second tear lines on said outer web portion extending from the lower edge of the inner web portion at a point immediately adjacent said first and second hermetically sealed end portions respectively and extending downwardly in the direction of said second side portion, said tear lines being of a pattern suitable for forming-an opening when the outer web portion is drawn away from said inner web portion.
2. The container of claim 1 wherein said web is composed of a cellophane sheet superimposed upon a heat scalable polyethylene sheet.
3. The container of claim 1 having in addition thereto and in combination therewith a continuous heat seal across the top of said container, said heat seal being positioned adjacent to and parallel with said adhesive means.
References Cited by the Examiner UNITED STATES PATENTS 2,844,846 7/ 1958 Kronholm. 2,963,215 12/1960 Saidel et al. 22951 3,100,598 8/1963 Saidel et al 229-87 3,122,301 2/1964 Barr 22987 JOSEPH R. LECLAIR, Primary Examiner.
D. M. BOCKENEK, Assistant Examiner.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US401072A US3259303A (en) | 1964-10-02 | 1964-10-02 | Resealable flexible container |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US401072A US3259303A (en) | 1964-10-02 | 1964-10-02 | Resealable flexible container |
DE1965D0031848 DE1926159U (en) | 1964-10-02 | 1965-08-26 | Composite foil packet. |
GB4139665A GB1074916A (en) | 1964-10-02 | 1965-09-29 | Resealable package |
NL6512667A NL6512667A (en) | 1964-10-02 | 1965-09-30 | |
BE670408D BE670408A (en) | 1964-10-02 | 1965-10-01 | |
FR33478A FR1448692A (en) | 1964-10-02 | 1965-10-01 | Box resealable |
Publications (1)
Publication Number | Publication Date |
---|---|
US3259303A true US3259303A (en) | 1966-07-05 |
Family
ID=23586165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US401072A Expired - Lifetime US3259303A (en) | 1964-10-02 | 1964-10-02 | Resealable flexible container |
Country Status (6)
Country | Link |
---|---|
US (1) | US3259303A (en) |
BE (1) | BE670408A (en) |
DE (1) | DE1926159U (en) |
FR (1) | FR1448692A (en) |
GB (1) | GB1074916A (en) |
NL (1) | NL6512667A (en) |
Cited By (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3453661A (en) * | 1966-11-14 | 1969-07-01 | Dow Chemical Co | Package |
US3503175A (en) * | 1966-11-28 | 1970-03-31 | American Mach & Foundry | Bulk packer |
US3526353A (en) * | 1968-04-09 | 1970-09-01 | Hoerner Waldorf Corp | Sterile pack carton |
US4260061A (en) * | 1979-07-05 | 1981-04-07 | Bemis Company, Inc. | Bag with opening and reclosing feature |
US6077551A (en) * | 1998-06-04 | 2000-06-20 | Hunt-Wesson, Inc. | Microwave popcorn preparation and serving package with releasably adhered lap seam |
EP1350741A2 (en) * | 2002-04-05 | 2003-10-08 | United Biscuits (Uk) Limited | Improvements in or relating to the packaging of food products |
US6659645B1 (en) * | 1999-03-29 | 2003-12-09 | Amcor Flexibles Europe A/S | Stand-up bag |
US20080095477A1 (en) * | 2006-10-23 | 2008-04-24 | Junichi Hagino | Packaging bag made of resin |
WO2008074060A1 (en) * | 2006-12-20 | 2008-06-26 | Bezzina-Schell, Sheree | Flexible food packaging with a resealable flap |
US20090161995A1 (en) * | 2007-12-21 | 2009-06-25 | Eric Henderson | Flexible film plate-mat bag |
US20100140129A1 (en) * | 2008-11-06 | 2010-06-10 | Clear Lam Packaging, Inc. | Flexible, Stackable Container and Method and System for Manufacturing Same |
US20110036741A1 (en) * | 2009-08-14 | 2011-02-17 | Cryovac, Inc. | Easy Open and Reclosable Package with Discrete Laminate Having Panel Section with Easy-Open Sealant |
US20110038571A1 (en) * | 2009-08-14 | 2011-02-17 | Cryovac, Inc. | Easy Open and Reclosable Package with Discrete Laminate with Die-cut |
US20110204056A1 (en) * | 2010-02-23 | 2011-08-25 | Kraft Foods R&D, Inc. | Food Package Having Opening Feature |
US20110253771A1 (en) * | 2008-10-20 | 2011-10-20 | Cadbury Holdings Limited | Packaging |
US20120195531A1 (en) * | 2011-01-28 | 2012-08-02 | Cryovac, Inc. | Easy Open and Reclosable Package with Discrete Laminate with Die-Cut |
US8308363B2 (en) | 2006-05-23 | 2012-11-13 | Kraft Foods Global Brands Llc | Package integrity indicator for container closure |
US8408792B2 (en) | 2007-03-30 | 2013-04-02 | Kraft Foods Global Brands Llc | Package integrity indicating closure |
US8602244B2 (en) | 2007-08-08 | 2013-12-10 | Clear Lam Packaging, Inc. | Flexible, stackable sealed package having corner seals and formed from a sheet of film |
US8746483B2 (en) | 2006-05-23 | 2014-06-10 | Intercontinental Great Brands Llc | Tamper evident resealable closure |
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US10207850B2 (en) | 2012-10-26 | 2019-02-19 | Primapak, Llc. | Flexible package and method of making same |
US10220998B2 (en) * | 2016-10-28 | 2019-03-05 | The Procter & Gamble Company | Reclosable package and a method of making the same |
US10351294B2 (en) | 2017-07-21 | 2019-07-16 | Sonoco Development, Inc. | Tamper evident hybrid resealable container |
US10843837B2 (en) | 2015-09-18 | 2020-11-24 | Primapak, Llc | Apparatus and method for making a flexible package |
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SE423080B (en) * | 1978-03-14 | 1982-04-13 | Salve Sa | Reclosable package for a stack of moist wipes or other wet material |
AT368467B (en) * | 1979-06-19 | 1982-10-11 | Teich Ag Folienwalzwerk | Packaging sleeve for approximately brick or tabled lowered or divisible items |
DE3337716A1 (en) * | 1983-10-18 | 1985-04-25 | Nordenia Kunststoffe | Packaging for loose bulk material |
DE3716897C2 (en) * | 1987-05-20 | 2001-11-22 | Focke & Co | Cuts for hinged boxes as a continuous material web |
CA2117280C (en) * | 1993-06-10 | 2005-04-05 | Joellen Nielsen Narsutis | Package for sliced food product |
DE29605787U1 (en) * | 1996-03-28 | 1996-06-13 | Hueck Folien Gmbh & Co Kg | Tubular bag pack |
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Also Published As
Publication number | Publication date |
---|---|
DE1926159U (en) | 1965-10-28 |
BE670408A (en) | 1966-04-01 |
GB1074916A (en) | 1967-07-05 |
NL6512667A (en) | 1966-04-04 |
FR1448692A (en) | 1966-08-05 |
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