US3595468A - Opening device - Google Patents

Opening device Download PDF

Info

Publication number
US3595468A
US3595468A US3595468DA US3595468A US 3595468 A US3595468 A US 3595468A US 3595468D A US3595468D A US 3595468DA US 3595468 A US3595468 A US 3595468A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
strip
face portions
opening device
item
region
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
Application number
Inventor
John P Repko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Rexam Beverage Can Co
Original Assignee
Dow Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66Inserted or applied tearing-strings or like flexible elements
    • B65D75/68Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/18End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/22End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using heat-activatable adhesive

Abstract

An improved opening device is disclosed comprising a strip of material, preferably fibrous material such as paper, secured flatwise between opposite face portions of an item such as a film pouch. The face portions terminate in edges, i.e., the top edges of the pouch, which can be grasped as tabs to open the item by separating the face portions at the region of the strip. Separation can be at the interface of the strip and either face portion, or the strip can delaminate into layers associated with the face portions, respectively. Such, an opening device, even if formed of paper, is useable in certain ''''boil-in-the-bag''''-type packages.

Description

United States Patent Inventor John P Repko Midland, Mich. Appl. No. 831,019 Filed June 6, I969 Patented July 27, 197 l Assignee The Dow Chemical Company Midland, Mich.

OPENING DEVICE 2 Claims, 7 Drawing Figs.

U.S. Cl 229/66, 229/62, 229/55 Int. Cl 865d 5/70, 865d 33/22 Field of Search 229/62, 66, 55, 51

References Cited UNITED STATES PATENTS 3,00l ,689 9/l 961 Burton 229/62 9/1963 Stone 3,l04,798 229/62 3,511,436 5/1970 Kessler... 22 /62 X 3,511,746 5/l970 Davies 229/62 X ABSTRACT: An improved opening device is disclosed comprising a strip of material, preferably fibrous material such as paper, secured flatwise between opposite face portions of an item such as a film pouch. The face portions terminate in edges, i.e., the top edges of the pouch, which can be grasped as tabs to open the item by separating the face portions at the region of the strip; Separation can be at the interface of the strip and either face portion, or the strip can delaminate into layers associated with the face portions, respectively. Such, an opening device, even if formed of paper, is useable in certain boil-in-the-bag"-type packages.

PATENTED JULZ'! I971 SHEET 1 0F 2 INVENTOR. do /2 n P. Re 0%0 QTTORNEY PATENTEU M21 |B7l 3595,4 53

SHEET 2 0F 2 INVENTOR. John R Repko flTTOR/VEY OPENING DEVICE The present invention relates. to an improved, convenient opening device for various receptaclelike items such as film pouches, and particularly relates to an opening device where a preferential separation of the layers of a strip of material is caused to open the item.

Accordingly, it is among the objects of the present invention to provide the following:

A new and improved opening device for various items such as film pouches wherein the device is economically practical for addition to the item, and moreover, can be reliably combined therewith on a mass production basis;

An opening device that is useable with numerous packaging materials, as for example, polyethylene or like stretchable films that do not tear or rupture evenly or along a regular path, and for which conventional opening devices, such as tear tapes are oftentimes less than fully satisfactory;

An opening device that is suitable for use on the more conventional packages as well as certain specialized ones, as, for example, certain boil-in-the-bag-type packages, i.e., packages such as for frozen foods when the food is prepared by immersing the package in boiling water;

An opening device wherein the same is readily incorporated into continuously operated overwrap and like packaging applications or systems, and

An opening device of tamper-proof character, i.e., one that is not subject to accidental or unintentional openings, and furthermore such an opening device wherein the same is of a construction that makes it consistently reliable as an opening feature.

Briefly, then, the invention contemplates an improved opening device comprising a strip of material, such as paper, secured in flatwise arrangement between oppositely disposed face portions of an item such as, for example, a film pouch. The face portions terminate in edges (i.e., such as topedges of the pouch) which can be grasped as tabs to open the item by pulling apart the face portions along the region of the strip. Opening normally involves a delamination of the strip, or in modified strip constructions the same involves a separation or opening at the vicinity of the interface between the strip and either of the aforesaid face portions.

Various preferred embodiments of the present invention are shown in the accompanying drawings in which wheresoever possible like characters of reference designate corresponding materials and parts throughout the several views thereof in which:

FIG. I is a schematic and diagrammatic representation of a method of continuously forming a package having the opening device of the present invention;

FIG. 2 is an elevational view of a package constructed according to the method illustrated in FIG. I;

FIG. 3 is an isometric view of the package of FIG. 2 showing the package as opened;

FIG. 4 is an enlarged and partial cross-sectional view of the package of FIG. 2 taken along reference line 4-4 thereof;

FIG. 5 is a schematic and diagrammatic representation of an overwrap packaging process generally showing how the opening device of the present invention can be incorporated into such a process;

FIG. 6 is an isometric view of the overwrap package produced according to the process depicted in FIG. 5; and

FIG. 7 is a view like FIG. 6 only showing the package as opened. 6

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now more particularly to the drawings there is shown in FIG. I a process for continuously forming packages 10 each including a convenient opening device as will be discussed more fully hereinafter.

Specifically, in such a process, web stock 14 having a heatsealable upper face 16 is fed from supply roll 18 to a horizontally mounted guide roller 20, and then to'vertically mounted nip rollers 22 and 24. Nip rollers 22 and 24 assisted by roller 20, and a forming member (not shown), fold the edges 26 and 28 of web 14 upwardly so as to' provide oppositely disposed web or wall sections 30 and 32, respectively.

Simultaneously, a heat-scalable strip or tape 34 comprising the aforesaid opening device, is fed onto web face 16 from a supply roll 38..A rotary heat-sealing mechanism 40 is employed to heat seal the strip and web face together. Vertically disposed sealing bars 42 and 44 thereafter form seals 46 at regularly spaced intervals on web 14 to compartment the same into a strip or plurality of connected bag elements or pouches 48.

Pouches 48 are then directed to a filling station denoted generally as being at arrow 50, where a product fill is placed in each pouch in a conventional manner.

Horizontally mounted sealing bars (not shown) are thereafter useable for closing the pouch tops such as by heat sealing wall sections 30 and 32 together along the center region of strip 34, as is denoted by seal 52 in FIG. 2. Packages 10 are then cut apart along the midregion of seals 46 and packed for shipping, or alternately such packages can be packed and shipped in strip form.

FIGS. 2-4 illustrate package 10 structure in somewhat more detail wherein strips 34 is shown as being flatwise secured between opposed inner face portions 54 and 56 of walls 30 and 32,'respectively (see FIG. 4). Face portions 54 and 56, in turn connect to the top edges 58 and 60, respectively, of pouch 48 such as to provide grasping tabs for opening. Thus, edges 58 and 60 can be separately grasped and pulled apart to delaminate or otherwise separate strip 34 into layers 62 and 64 associated with face portions 54 and 56, respectively, as is illustrated in FIG. 3. In other words, the bond strength joining strip 34 to face portions 54 and 56 is greater than the cohesiveness of the strip 34 material. Thus, the above-indicated delamination or separation of strip 34 results upon application of force to edges 58 and 60. It is important, of

1 course, that edges 58 and 60 are of sufficient thickness or structural integrity to permit application of such opening forces to strip 34.

In the preferred construction, strip 34 comprises a central or inner ply 66 of fibrous material (see FIG. 4). Each side of central ply 66 is extrusion coated or otherwise suitably joined together with exterior or face plies 68 and 70, respectively, of heat-scalable thermoplastic material. Conventional primers can be employed to enhance the bondv between the fibrous material or ply 66 and plies 68 and 70.

Specifically, the aforegoing arrangement of plies provides a heat-sealing media (i.e. glue plies 68 and 70) for securing or heat sealing strip 34 to face portions 54 and 56, respectively. Moreover there is provided in central fibrous ply 66 a material of relatively low cohesive strength. Such central ply 66 character permits the desired delamination of strip 34 to occur generally along the midregion thereof as indicated generally by imaginary plane 72 shown by dot-dash lines in FIG. 4. Such delamination, however, can be uneven or irregular, with some separation, for example, occurring at either or both of the interfaces 65 and 67 between plies 66, 68 and 70.

For exemplary purposes only such fibrous material as comprises inner layer 54 can be paper of either natural or synthetic based fibers or other suitable fibrous materials such as the spun-bonded olefin materials; the latter is a product formed by a random distribution of very fine continuous filament polyethylene fibers, as for example, bonded together by heat and pressure. Such fibrous material can be either laminate or single ply in construction.

For further exemplary purposes, various other applicable materials that can comprise strip 34 are nonfibrous materials comprising laminates of intimately joined layers. One such applicable laminate material comprises the following arrangement of five plies: Low-density polyethylene/ethylene vinyl acetate copolymer/saran (a vinylidene chloride copolymer)/ethylene vinyl acetate copolymerllow-density polyethylene. Such a laminate can be formed by coextrusion technique (see British Pat. No. l,l46,647). it has been discovered that when heat is applied to such a laminate, i.e., to form closure seal 52, there is apparently a breakdown in laminate structure or bond strength at the region of the saran ply and to a degree that permits delamination of the strip at and along the vicinity of the ethylene vinyl acetate copolymer and saran interfaces.

Strip 34 can further comprise a nonlaminate material, as for example, a noncoated fibrous material. Such material can be for all practical purposes noncompatible or nonheat scalable to face portions 54 and 56, even though a mechanical bond can be effected therewith by fiber entanglement. Thus, the material comprising face portions 54 and 56 flows around such fibers under application of appropriate amounts of heat and/or pressure such that a mechanical bond between the strip and face portion results. in this latter construction, separation or opening will normally occur at interface regions between strip 34 and face portions 54 and 56. Altemately, a delamination-type opening or opening strip 34 at its midregion as in dicated in FIG. 4, i.e., along plane 72, is obtainable provided a sufficient strong bond can be effected between strip 34 and face portions 54 and 56, respectively. Such a bond can be resulted, for example, by using appropriate adhesives or solvents, or the like, or as mentioned hereinbefore, glue layers in the form of heat-scalable plies 68 and 70.

FIG. through 7 illustrate modified forms of the invention wherein a strip 34a is incorporated into a package 100 formed by overwrapping a film or web 80 about a product fill 82 such as cheese, luncheon meet or the like. Specifically, film 80 is fed from a supply roll 84 to nip rollers 86 and 88 whereat the strip 34a is received from a supply roll 90. A suitable rotary sealing mechanism, as denoted generally at 92, heat seals the strip 340 to web 80.

The product fill 82 is then placed on web 80 and web edges 92 and 94 brought together over the fill in conventional overlap fashion to enclose the product in a tubular body of film 96. A conventional type heat-sealing mechanism indicated generally at 98 thereafter joins edges 92 and 94 together along the midregion of strip 34a as denoted by the area comprising seal lines 100 in FIG. 6. End closure seals 102 and 104 are then made by suitable means (not shown) to close the ends of tubular body 96, and thereby produce a hermetically sealed package.

Package 100 is openable by grasping edges 92 and 94 and breaking open the package as is illustrated in F IG. 7.

The following examples I and II illustrate the invention wherein a fibrous strip of material 34 is applied as an opening device to a test package comprising a boil-in-the-bag-type pouch. Surprisingly, the fibrous strip functions properly even though in both instances, the pouches prior to opening are placed in boiling water for periods of minutes, respectively,

to prepare the food product therein for serving.

EXAMPLE 1 A pouch comprising a laminate of b-mill Mylar- (a polyester film) outer surface, 2-mill low-density polyethylene (inner surface) is fitted with a strip 34 comprising a central play 66 of 50-pound. Kraft paper extrusion coated on each side with Vz-mill thick plies, respectively of low-density polyethylene. Canned gravy is placed in the pouch and a closure fomted by heat sealing the pouch closed along the strip 34 area as described above. The package is then placed in boiling water for l5 minutes to prepare the gravy for serving. Some puffing of the package is noted during the boiling period indicating internal pressure. No leakage at the strip 34 region is detected. The package is then removed from the boiling water and opened. No "wicking of the fibrous central ply 66 of strip 34 is observed at regions above the lower edge of the closure seal.

EXAMPLE II The experiment is repeated as described in example I except frozen peas including a butter sauce mixture is the subject product. Boiling is for 15 minutes. The package in the strip region remains substantially liquidtight as evidenced by no noticeable leakage. Following removal the package is opened and the fibrous layer examined for wicking. No wicking is visibly detectable.

While certain representative embodiments and details have been shown for the purpose of illustrating the invention, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.

What I claim is:

l. A convenient Opening device for an item having oppositely disposed face portions and openable by separating said face portions, said opening device comprising a strip of material sandwiched between and secured together with said face portions, respectively, said strip comprising a laminate of intimately joined layers of thermoplastic material including at least a layer of vinylidene chloride copolymer, and immediately adjacent thereto, a layer of ethylene vinyl acetate copolymer, said strip defining a region of preferential separation formed by applying heat to said strip, means associated with at least one of said face portions to permit a separating force to be applied to said strip to open said item along said region of preferential separation.

2. The opening device of claim 1 wherein said strip comprises a laminate of polyethylene/ethylene vinyl acetate copolymer/vinylidene chloride copolymer/ethylene vinyl acetate copolymer/polyethylene.

Claims (2)

1. A convenient opening device for an item having oppositely disposed face portions and openable by separating said face portions, said opening device comprising a strip of material sandwiched between and secured together with said face portions, respectively, said strip comprising a laminate of intimately joined layers of thermoplastic material including at least a layer of vinylidene chloride copolymer, and immediately adjacent thereto, a layer of ethylene vinyl acetate copolymer, said strip defining a region of preferential separation formed by applying heat to said strip, means associated with at least one of said face portions to permit a separating force to be applied to said strip to open said item along said region of preferential separation.
2. The opening device of claim 1 wherein said strip comprises a laminate of polyethylene/ethylene vinyl acetate copolymer/vinylidene chloride copolymer/ethylene vinyl acetate copolymer/polyethylene.
US3595468A 1969-06-06 1969-06-06 Opening device Expired - Lifetime US3595468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US83101969 true 1969-06-06 1969-06-06

Publications (1)

Publication Number Publication Date
US3595468A true US3595468A (en) 1971-07-27

Family

ID=25258115

Family Applications (1)

Application Number Title Priority Date Filing Date
US3595468A Expired - Lifetime US3595468A (en) 1969-06-06 1969-06-06 Opening device

Country Status (1)

Country Link
US (1) US3595468A (en)

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942713A (en) * 1974-02-25 1976-03-09 Mobil Oil Corporation Pressure sensitive adhesive closure for bags incorporating an adhesive cuff-lock design
US4011798A (en) * 1973-11-29 1977-03-15 Packaging Industries, Inc. Method of making shipping bag
DE2547049A1 (en) * 1975-10-21 1977-05-05 Focke Pfuhl Verpack Automat the same device for closing the tobacco pouch of plastic film, and
US4058425A (en) * 1973-07-16 1977-11-15 A-T-O Inc. Inhalant disperser
US4087002A (en) * 1973-11-29 1978-05-02 Packaging Industries, Inc. Shipping bag
US4196841A (en) * 1978-04-07 1980-04-08 Phillips Petroleum Company Laminate and container therefrom
US4252846A (en) * 1975-09-22 1981-02-24 The Dow Chemical Company Packages embodying a controlled peel seal and method of preparing same
US4252238A (en) * 1978-03-14 1981-02-24 Salve S.A. Package for a stack of refreshers
US4296179A (en) * 1974-06-24 1981-10-20 Wardwell Charles R Frangible bonding using blush lacquer
US4358466A (en) * 1980-04-11 1982-11-09 The Dow Chemical Company Freezer to microwave oven bag
US4488647A (en) * 1983-07-18 1984-12-18 Paramount Packaging Corporation Flexible package with easy opening peel seal
US4518087A (en) * 1983-05-20 1985-05-21 Fres-Co System Usa, Inc. Sealed flexible container with non-destructive peelable opening
EP0167379A2 (en) * 1984-07-02 1986-01-08 Techsearch Incorporated Security bag
US4576285A (en) * 1983-05-20 1986-03-18 Fres-Co System Usa, Inc. Sealed flexible container with non-destructive peelable opening and apparatus and method for forming same
US4708249A (en) * 1985-06-24 1987-11-24 Minnesota Mining And Manufacturing Company Two part tape tab for opening a container
USRE33173E (en) * 1984-02-23 1990-02-27 Trigon Packaging Systems (Nz) Ltd. Envelope with pouch and method of manufacture thereof
EP0384588A2 (en) * 1989-02-24 1990-08-29 Oscar Mayer Foods Corporation Tamper-evident, reclosable, flexible packages
US5224779A (en) * 1989-02-24 1993-07-06 Oscar Mayer Foods Corporation Tamper-evident, reclosable flexible packages
US5241150A (en) * 1989-10-02 1993-08-31 Minnesota Mining And Manufacturing Company Microwave food package
US5620095A (en) * 1993-06-11 1997-04-15 Minnesota Mining And Manufacturing Company Orthopedic casting material and hermetic package
US5924795A (en) * 1991-02-22 1999-07-20 Kraft Foods, Inc. Tamper-evident, reclosable, flexible packages
US5984088A (en) * 1993-06-11 1999-11-16 3M Innovative Properties Company Easy open package and method of making same
US6360513B1 (en) 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US6461044B1 (en) 2000-06-12 2002-10-08 Sonoco Development, Inc. Reclosable bag formed on form, fill and seal machine
US20050008266A1 (en) * 2003-07-10 2005-01-13 Crunkleton Gregory H. Reclosable package having internal seal made of double-sided adhesive tape
US20050272585A1 (en) * 2003-01-14 2005-12-08 Exopack, L.L.C. Apparatus forming a bag
EP1621476A1 (en) * 2004-07-29 2006-02-01 Guala Pack S.p.A. Container for semidense or liquid cosmetic or pharmaceutical products combined with an applicator for the said cosmetic or pharmaceutical products
US20070062161A1 (en) * 2005-09-22 2007-03-22 Dierl Martin B Flexible package with inside reclose strip
US20070104398A1 (en) * 2005-11-10 2007-05-10 Ours David C Container With Peelable Seal Assembly and Method of Making
US20080081095A1 (en) * 2004-02-09 2008-04-03 Cole Lorin R Microwave cooking packages and methods of making thereof
US20080197128A1 (en) * 2007-02-15 2008-08-21 John Cameron Files Microwave energy interactive insulating structure
US20090242550A1 (en) * 2008-03-27 2009-10-01 Schneider Lee M Self-Venting Microwave Heating Package
US7682639B1 (en) * 2007-09-26 2010-03-23 Hines Stephen P Water packet
US20110038571A1 (en) * 2009-08-14 2011-02-17 Cryovac, Inc. Easy Open and Reclosable Package with Discrete Laminate with Die-cut
US20110038570A1 (en) * 2009-08-14 2011-02-17 Cryovac, Inc. Easy Open and Reclosable Package with Discrete Tape and Die-cut Web
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
US20110129170A1 (en) * 2009-11-27 2011-06-02 Campbell Charles E Flood Proof Container
US7963413B2 (en) 2006-05-23 2011-06-21 Kraft Foods Global Brands Llc Tamper evident resealable closure
US20110147377A1 (en) * 2002-02-08 2011-06-23 Wnek Patrick H Insulating Microwave Interactive Packaging
US8114451B2 (en) 2006-12-27 2012-02-14 Kraft Foods Global Brands Llc Resealable closure with package integrity feature
US8308363B2 (en) 2006-05-23 2012-11-13 Kraft Foods Global Brands Llc Package integrity indicator for container closure
US20120312713A1 (en) * 2010-02-19 2012-12-13 Unicharm Corporation Wet tissue package and production method for same
US8408792B2 (en) 2007-03-30 2013-04-02 Kraft Foods Global Brands Llc Package integrity indicating closure
US20130209000A1 (en) * 2012-02-13 2013-08-15 Cryovac, Inc. Easy Open and Reclosable Package with Die-Cut Web and Reclosure Mechanism
US20130308882A1 (en) * 2012-05-17 2013-11-21 The Tapemark Company Easy-open peel pouch
US20140013713A1 (en) * 2012-07-10 2014-01-16 Dawn L. Boettcher Convenient disposal container
US8979370B2 (en) 2011-01-28 2015-03-17 Cryovac, Inc. Easy open and reclosable package with discrete laminate with die-cut
US9150342B2 (en) 2003-04-16 2015-10-06 Intercontinental Great Brands Llc Resealable tray container
US20150298880A1 (en) * 2012-10-30 2015-10-22 Amcor Flexibles Reclosable Package
US9205967B2 (en) 2010-01-26 2015-12-08 Generale Biscuit Resealable packaging for food products and method of manufacturing
US20150353238A1 (en) * 2014-06-10 2015-12-10 Cryovac, Inc Easy Open and Reclosable Gusseted Package with Die-Cut Web and Reclosure Mechanism
US9221590B2 (en) 2010-03-23 2015-12-29 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9630761B2 (en) 2008-10-20 2017-04-25 Mondelez UK Holding & Services Limited Packaging
US9656783B2 (en) 2010-05-18 2017-05-23 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US9688442B2 (en) 2011-03-17 2017-06-27 Intercontinental Great Brands Llc Reclosable flexible film packaging products and methods of manufacture
US9708104B2 (en) 2010-05-18 2017-07-18 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001689A (en) * 1958-10-24 1961-09-26 Dow Chemical Co Mouth closure means for bags comprising heat sealable material
US3104798A (en) * 1963-09-24 stone
US3511746A (en) * 1966-09-12 1970-05-12 Us Plywood Champ Papers Inc Easy opening heat sealed package
US3511436A (en) * 1966-09-12 1970-05-12 Us Plywood Champ Papers Inc Easy opening heat sealed package

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104798A (en) * 1963-09-24 stone
US3001689A (en) * 1958-10-24 1961-09-26 Dow Chemical Co Mouth closure means for bags comprising heat sealable material
US3511746A (en) * 1966-09-12 1970-05-12 Us Plywood Champ Papers Inc Easy opening heat sealed package
US3511436A (en) * 1966-09-12 1970-05-12 Us Plywood Champ Papers Inc Easy opening heat sealed package

Cited By (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058425A (en) * 1973-07-16 1977-11-15 A-T-O Inc. Inhalant disperser
US4011798A (en) * 1973-11-29 1977-03-15 Packaging Industries, Inc. Method of making shipping bag
US4087002A (en) * 1973-11-29 1978-05-02 Packaging Industries, Inc. Shipping bag
US3942713A (en) * 1974-02-25 1976-03-09 Mobil Oil Corporation Pressure sensitive adhesive closure for bags incorporating an adhesive cuff-lock design
US4296179A (en) * 1974-06-24 1981-10-20 Wardwell Charles R Frangible bonding using blush lacquer
US4252846A (en) * 1975-09-22 1981-02-24 The Dow Chemical Company Packages embodying a controlled peel seal and method of preparing same
DE2547049A1 (en) * 1975-10-21 1977-05-05 Focke Pfuhl Verpack Automat the same device for closing the tobacco pouch of plastic film, and
US4252238A (en) * 1978-03-14 1981-02-24 Salve S.A. Package for a stack of refreshers
US4196841A (en) * 1978-04-07 1980-04-08 Phillips Petroleum Company Laminate and container therefrom
US4358466A (en) * 1980-04-11 1982-11-09 The Dow Chemical Company Freezer to microwave oven bag
US4576285A (en) * 1983-05-20 1986-03-18 Fres-Co System Usa, Inc. Sealed flexible container with non-destructive peelable opening and apparatus and method for forming same
US4518087A (en) * 1983-05-20 1985-05-21 Fres-Co System Usa, Inc. Sealed flexible container with non-destructive peelable opening
US4488647A (en) * 1983-07-18 1984-12-18 Paramount Packaging Corporation Flexible package with easy opening peel seal
USRE33173E (en) * 1984-02-23 1990-02-27 Trigon Packaging Systems (Nz) Ltd. Envelope with pouch and method of manufacture thereof
EP0167379A2 (en) * 1984-07-02 1986-01-08 Techsearch Incorporated Security bag
EP0167379A3 (en) * 1984-07-02 1987-08-19 Techsearch Incorporated Security bag
US4708249A (en) * 1985-06-24 1987-11-24 Minnesota Mining And Manufacturing Company Two part tape tab for opening a container
EP0384588A2 (en) * 1989-02-24 1990-08-29 Oscar Mayer Foods Corporation Tamper-evident, reclosable, flexible packages
EP0384588A3 (en) * 1989-02-24 1991-07-24 Oscar Mayer Foods Corporation Tamper-evident, reclosable, flexible packages
US5224779A (en) * 1989-02-24 1993-07-06 Oscar Mayer Foods Corporation Tamper-evident, reclosable flexible packages
US5241150A (en) * 1989-10-02 1993-08-31 Minnesota Mining And Manufacturing Company Microwave food package
US5924795A (en) * 1991-02-22 1999-07-20 Kraft Foods, Inc. Tamper-evident, reclosable, flexible packages
US5620095A (en) * 1993-06-11 1997-04-15 Minnesota Mining And Manufacturing Company Orthopedic casting material and hermetic package
US5984088A (en) * 1993-06-11 1999-11-16 3M Innovative Properties Company Easy open package and method of making same
US6360513B1 (en) 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US8523437B2 (en) 1999-05-11 2013-09-03 Sargento Foods, Inc. Resealable bag for filling with food product (s) and method
US7320545B2 (en) 1999-05-11 2008-01-22 Sargento Foods Inc. Resealable bag for filling with food product (s) and method
US6910806B2 (en) 1999-05-11 2005-06-28 Sargento Foods, Inc. Resealable bag for filling with food product(S) and method
US6913387B2 (en) 1999-05-11 2005-07-05 Sargento Foods, Inc. Resealable bag for filling with food product (s) and method
US7086782B2 (en) 1999-05-11 2006-08-08 Sargento Foods, Inc. Resealable bag for filling with food products and method
US7165887B2 (en) 1999-05-11 2007-01-23 Sargento Foods, Inc. Resealable bag for filling with food product(s) and method
US6461044B1 (en) 2000-06-12 2002-10-08 Sonoco Development, Inc. Reclosable bag formed on form, fill and seal machine
US8563906B2 (en) 2002-02-08 2013-10-22 Graphic Packaging International, Inc. Insulating microwave interactive packaging
US20110147377A1 (en) * 2002-02-08 2011-06-23 Wnek Patrick H Insulating Microwave Interactive Packaging
US7322921B2 (en) * 2003-01-14 2008-01-29 Exopack Technology, Llc Method of forming a bag
US7563027B2 (en) 2003-01-14 2009-07-21 Exopack, L.L.C. Tamper evident multi-wall packaging and associated methods
US20050272585A1 (en) * 2003-01-14 2005-12-08 Exopack, L.L.C. Apparatus forming a bag
US9150342B2 (en) 2003-04-16 2015-10-06 Intercontinental Great Brands Llc Resealable tray container
US20050008266A1 (en) * 2003-07-10 2005-01-13 Crunkleton Gregory H. Reclosable package having internal seal made of double-sided adhesive tape
US20080081095A1 (en) * 2004-02-09 2008-04-03 Cole Lorin R Microwave cooking packages and methods of making thereof
US8828510B2 (en) 2004-02-09 2014-09-09 Graphic Packaging International, Inc. Microwave cooking packages and methods of making thereof
US8440275B2 (en) 2004-02-09 2013-05-14 Graphic Packaging International, Inc. Microwave cooking packages and methods of making thereof
WO2006010624A3 (en) * 2004-07-29 2006-03-23 Guala Pack Spa Container for semidense or liquid cosmetic or pharmaceutical products combined with an applicator for the said cosmetic or pharmaceutical products
WO2006010624A2 (en) * 2004-07-29 2006-02-02 Guala Pack S.P.A. Container for semidense or liquid cosmetic or pharmaceutical products combined with an applicator for the said cosmetic or pharmaceutical products
EP1621476A1 (en) * 2004-07-29 2006-02-01 Guala Pack S.p.A. Container for semidense or liquid cosmetic or pharmaceutical products combined with an applicator for the said cosmetic or pharmaceutical products
US20080000200A1 (en) * 2005-09-22 2008-01-03 Dierl Martin M Flexible Package with Inside Reclose Strip
US20070062161A1 (en) * 2005-09-22 2007-03-22 Dierl Martin B Flexible package with inside reclose strip
US7305805B2 (en) 2005-09-22 2007-12-11 Frito-Lay North America, Inc. Method for making a flexible reclosable package
US20070104398A1 (en) * 2005-11-10 2007-05-10 Ours David C Container With Peelable Seal Assembly and Method of Making
US8722122B2 (en) 2006-05-23 2014-05-13 Intercontinental Great Brands Llc Package integrity indicator for container closure
US7963413B2 (en) 2006-05-23 2011-06-21 Kraft Foods Global Brands Llc Tamper evident resealable closure
US8308363B2 (en) 2006-05-23 2012-11-13 Kraft Foods Global Brands Llc Package integrity indicator for container closure
US8951591B2 (en) 2006-05-23 2015-02-10 Intercontinental Great Brands Llc Package integrity indicator for container closure
US9663282B2 (en) 2006-05-23 2017-05-30 International Great Rapids LLC Package integrity indicator for container closure
US8746483B2 (en) 2006-05-23 2014-06-10 Intercontinental Great Brands Llc Tamper evident resealable closure
US8889205B2 (en) 2006-12-27 2014-11-18 Intercontinental Great Brands Llc Resealable closure with package integrity feature
US8114451B2 (en) 2006-12-27 2012-02-14 Kraft Foods Global Brands Llc Resealable closure with package integrity feature
US9073689B2 (en) 2007-02-15 2015-07-07 Graphic Packaging International, Inc. Microwave energy interactive insulating structure
US20080197128A1 (en) * 2007-02-15 2008-08-21 John Cameron Files Microwave energy interactive insulating structure
US9187228B2 (en) 2007-03-30 2015-11-17 Intercontinental Great Brands Llc Package integrity indicating closure
US9919855B2 (en) 2007-03-30 2018-03-20 Intercontinental Great Brands Llc Package integrity indicating closure
US8408792B2 (en) 2007-03-30 2013-04-02 Kraft Foods Global Brands Llc Package integrity indicating closure
US7682639B1 (en) * 2007-09-26 2010-03-23 Hines Stephen P Water packet
US20090242550A1 (en) * 2008-03-27 2009-10-01 Schneider Lee M Self-Venting Microwave Heating Package
US9630761B2 (en) 2008-10-20 2017-04-25 Mondelez UK Holding & Services Limited Packaging
US8646975B2 (en) 2009-08-14 2014-02-11 Cryovac, Inc. Easy open and reclosable package with discrete tape and die-cut web
US8622618B2 (en) 2009-08-14 2014-01-07 Cryovac, Inc. Easy open and reclosable package with discrete laminate having panel section with easy-open sealant
US9221591B2 (en) 2009-08-14 2015-12-29 Cryovac, Inc. Easy open and reclosable package with discrete laminate with die-cut
US20110038571A1 (en) * 2009-08-14 2011-02-17 Cryovac, Inc. Easy Open and Reclosable Package with Discrete Laminate with Die-cut
US20110038570A1 (en) * 2009-08-14 2011-02-17 Cryovac, Inc. Easy Open and Reclosable Package with Discrete Tape and Die-cut Web
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
US20110129170A1 (en) * 2009-11-27 2011-06-02 Campbell Charles E Flood Proof Container
US9205967B2 (en) 2010-01-26 2015-12-08 Generale Biscuit Resealable packaging for food products and method of manufacturing
US8960439B2 (en) * 2010-02-19 2015-02-24 Uni-Charm Corporation Wet tissue package and production method for same
US20120312713A1 (en) * 2010-02-19 2012-12-13 Unicharm Corporation Wet tissue package and production method for same
US9221590B2 (en) 2010-03-23 2015-12-29 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9656783B2 (en) 2010-05-18 2017-05-23 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US9708104B2 (en) 2010-05-18 2017-07-18 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US8979370B2 (en) 2011-01-28 2015-03-17 Cryovac, Inc. Easy open and reclosable package with discrete laminate with die-cut
US9688442B2 (en) 2011-03-17 2017-06-27 Intercontinental Great Brands Llc Reclosable flexible film packaging products and methods of manufacture
US20130209000A1 (en) * 2012-02-13 2013-08-15 Cryovac, Inc. Easy Open and Reclosable Package with Die-Cut Web and Reclosure Mechanism
US8727621B2 (en) * 2012-02-13 2014-05-20 Cryovac, Inc. Easy open and reclosable package with die-cut web and reclosure mechanism
US20130308882A1 (en) * 2012-05-17 2013-11-21 The Tapemark Company Easy-open peel pouch
US20140013713A1 (en) * 2012-07-10 2014-01-16 Dawn L. Boettcher Convenient disposal container
US20150298880A1 (en) * 2012-10-30 2015-10-22 Amcor Flexibles Reclosable Package
US9434523B2 (en) * 2012-10-30 2016-09-06 Amcor Flexibles Reclosable package
US9586724B2 (en) * 2014-06-10 2017-03-07 Cryovac, Inc. Easy open and reclosable gusseted package with die-cut web and reclosure mechanism
US20150353238A1 (en) * 2014-06-10 2015-12-10 Cryovac, Inc Easy Open and Reclosable Gusseted Package with Die-Cut Web and Reclosure Mechanism

Similar Documents

Publication Publication Date Title
US3552638A (en) Peel-open thermoplastic package for sterilized articles
US3464832A (en) Food packaging
US3596828A (en) Flexible pouches and bags
US3613874A (en) Reclosable package
US3554368A (en) Package and packaging method
US3567110A (en) Sealed bag having a pair of handles attached to two folded end portions and retained thereafter the contents are dispensed
US3160273A (en) Containers and method of making same
US3469768A (en) Dual compartment container
US3373926A (en) Seamed container with easy opening feature
US3162539A (en) Packaging arrangements
US3348762A (en) Household bag construction
US3608815A (en) Opening aid for packages
US3687356A (en) Gusseted type bags
US3565738A (en) Plastic bag and peelable plastic tie closure tape attached thereto
US3456867A (en) Bag assemblage
US5161350A (en) Process and apparatus for manufacturing a dispenser-container
US4705174A (en) Sealed flexible container with non-destructive peelable opening
US3276669A (en) Package and method of making same
US3083876A (en) Pre-perforated material for packages and method of making same
US2189174A (en) Container
US5564259A (en) Method and apparatus for resealable closure addition to form, fill and seal bag
US3158491A (en) Food container
US6244748B1 (en) Plastic package with fastener
US5205650A (en) Tubular bag with shock absorber band tube for making such bag, and method for its production
US4420080A (en) Re-sealable dispenser-container

Legal Events

Date Code Title Description
AS Assignment

Owner name: AMERICAN CAN PACKAGING INC., AMERICAN LANE, GREENW

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338

Effective date: 19861107

Owner name: AMERICAN NATIONAL CAN COMPANY

Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354

Effective date: 19870430

Owner name: AMERICAN CAN PACKAGING INC.,CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:4835/338

Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:4835/354

Owner name: AMERICAN NATIONAL CAN COMPANY,STATELESS

Owner name: AMERICAN CAN PACKAGING INC., CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338

Owner name: AMERICAN NATIONAL CAN COMPANY, STATELESS