US3272422A - Reclosable package - Google Patents

Reclosable package Download PDF

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Publication number
US3272422A
US3272422A US444271A US44427165A US3272422A US 3272422 A US3272422 A US 3272422A US 444271 A US444271 A US 444271A US 44427165 A US44427165 A US 44427165A US 3272422 A US3272422 A US 3272422A
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Prior art keywords
package
pressure sensitive
sensitive adhesive
closure member
film
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Expired - Lifetime
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US444271A
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Harmon B Miller
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Paramount Paper Products Co
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Paramount Paper Products Co
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Priority to US444271A priority Critical patent/US3272422A/en
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    • 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
    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10Container closures formed after filling
    • B65D77/20Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068Means for reclosing the cover after its first opening
    • B65D77/2096Adhesive means
    • 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
    • B65D2577/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10Container closures formed after filling
    • B65D2577/20Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041Pull tabs
    • B65D2577/205Pull tabs integral with the closure

Description

Sept. 13, 1966 MILLER 3,272,422

RECLOSABLE PACKAGE Filed March 31, 1965 ATTORNEYS United States Patent 3,272,422 RECLOSABLE PACKAGE Harmon B. Miller, Atlanta, Ga, assignor to Paramount Paper Products Company, Omaha, Nehru, a corporation of Delaware Filed Mar. 31, 1965, Ser. No. 444,271 9 Claims. (Cl. 229-43) The present invention relates to an improvement in a reclosable package and more particularly to a package having a reclosable lid releasably secured to the body of the package by a pressure sensitive adhesive.

The principal object of the present invention is to provide a package having a lid member which is secured to the body of the package by a pressure sensitive ad hesive, but in which the pressure sensitive adhesive is initially not exposed so as to interfere with filling and closing of the package.

This object can be better understood by consideration of one type of package for which the present improvement is useful, i.e. packages which comprise a preformed cup or receptacle of transparent plastic sheet material such as Saran or polyethylene, and a lid. A package of this type is shown herein in FIGURE 2 and comprises a bottom and sides. There is a flange extending laterally outwardly from the sides, and a substantially flat lid rest-s against the flange to close the package.

In order for the package to be used for perishable foods, it is preferable for the lid to be hermetically sealed to the flange. However, for the convenience of the consumer, it is desirable that the lid be easily removable and replaceable in theevent that only part of the contents of the package are to be removed at one time.

Pressure sensitive adhesives are available which are capable of providing this kind of seal. A pressure sensitive adhesive is ordinarily employed as a coating or mass on a backing material and is normally tacky. It will stick to most surfaces but may be peeled off non-fibrous surfaces easily without leaving any residue on the surface. The adhesive mass is more strongly bonded to the backing material and is not separated from it when it is peeled off the non-fibrous surface.

It will be appreciated therefore that a pressure sensitive layer on a lid would permit the package to be closed, reopened and reclosed as many times as desired by the consumer. However, this type of adhesive has the disadvantage that the ease with which it sticks to most surfaces can be inconvenient when the package is initially filled and closed by a manufacturer or packer. Automated packaging machinery operating at high speed can more readily handle packaging materials which have no tendency to stick to each other or the equipment used to process them. For example, in a stack of lids of the type described above, it would be undesirable for the individual lids to tend to stick to each other as they would if they were coated with pressure sensitive adhesive. It is possible to apply a coating to the back of the lids, i.e. a backsize coating of the type used on pressure sensitive adhesive tape, which will prevent forming a permanent bond between the lids. However, the lids would nevertheless stick to each other in the same manner as the successive layers on a roll of pressure sensitive tape, and would have to be pulled apart as they are used. In the case of vacuum packaging, the lid could not be placed on the package prior to evacuation because it would stick and would not lift off the package to permit outflow of an.

Accordingly, there is a need for a pressure sensitive adhesive seal for packages which is rendered inoperative while the package is being filled and closed initially, prior to sale. This object is achieved by the present invention in which a pressure sensitive adhesive is used on a package lid (or other package closing member), but it is initially covered by a peelable film member. When the package is closed, the peelable member is permanently sealed (e.g. heat sealed) to the package. Thereafter, when the lid is removed by the purchaser, the pressure sensitive adhesive on the lid lifts away from the peelable film. The lid can be resealed easily by lightly pressing the adhesive against the peelable film, and it can be reopened and closed repeatedly in the same manner.

The invention will be better understood by consideration of the following detailed description of preferred embodiments, reference being made to the drawing, in which:

FIGURE 1 is a perspective view of a lid embodying the sealing features of the present invention;

FIGURE 2 is a perspective view of the components of a package which may be sealed in accordance with the invention;

FIGURE 3 is a cross-section of a lid along the lines 3-3 of FIGURE 1; and

FIGURE 4 is a perspective view of another form of package.

Referring to FIGURES 1 and 3, the lid comprises a circular board 1 having a tab 2 extending from one side. The board may be paper, printed with labeling information, or it may be transparent plastic to permit inspection of the contents of the package. The undersurface of the board is coated with a layer of pressure sensitive adhesive 3. The coating is in the shape of a narrow ring around the edge of the lid, for sealing to the edge of a cup. One side of a peelable film 4 is adhered to the pressure sensitive adhesive coating, and it is coated on its other surface with a heat seal material 5. The peelable film 4- and the heat seal coating 5, also are ring shaped, and are at least as wide as the pressure sensitive adhesive coating to substantially completely cover it.

The pressure sensitive adhesive may be any available pressure sensitive adhesive mass, its composition not being an element of the present invention. It is well known to those skilled in the art that pressure sensitive adhesive coatings possess a fourfold balance of tackiness, cohesion, elasticity and stretchiness. This balance is achieved for example, in a blend of rubber and a resin, the rubber providing cohesion and elasticity, and the resin providing tackiness and modification of str'etchiness and elasticity. It also is known to use certain acrylate polymers in the mass, which inherently possess the necessary fourfold balance of properties. Materials of this type are readily available commercially, and manufacturers will provide information on materials to be used, taking into account the composition of the board 1 and the peelable film 4. Where necessary, a primer coating may be used on the board, under the pressure sensitive adhesive, to assure a firm bond, and a backsize coating may be used on the peelable film. It also will be understood that, where food products are to be packaged, it may be necessary to take int-o account the toxicity of materials used.

The heat seal coating 5 is an optional feature, to be used only where the peelable film does not readily heat seal to the package. Where the package is, say, polyethylene or polystyrene, the same material may be used for the peelable film and a heat seal coating may be necessary.

For convenience in handling, it may be desirable to employ a peelable film 4 of the same size and shape as the board 1. This inner portion, within the desired ring, may then be separated with a die cutter. If the pressure sensitive adhesive is coated in a :ring, only, as shown, the film will drop out. If the pressure sensitive adhesive is coated over the entire surface of the board, the inner part of the film will simply lift off with the board when the package is opened.

Several types of package may be sealed in accordance with the invention, for example those shown in FIG- URES 2 and 4. The package in FIGURE 2 comprises a cup 6 adapted to hold, for example, sliced luncheon meat. The cup has a bottom 7, sides 8 and a lateral flange 9 extending from the sides. A lid 10 is shown above the cup, which will overlie the flange 9 when the package is closed. The adhesive and heat seal coatings and the peelable film are not shown in this view of the lid, for simplicity, but it will be appreciated that they may be the same as on the lid shown in FIG. 1.

The package shown in FIGURE 4 is of a size and shape for slices of bacon and illustrates a form of the invention in which only a part of the closure is resealable, the remainder being permanently sealed. This package comprises a rectangular base member 20 which may be a piece of cardboard. Two edges of the base member are turned back to overlie the base, as indicated at 21 and 22, the turned over portions being sealed to the base by adhesive at the ends of the package, and this adhesive may be pressure sensitive if desired.

The closure is a piece of flexible transparent plastic film 23 such as polyethylene. This film, which will be referred to as the lid, for convenience, is sealed at its edges to the underlying board. However, only a portion of the edge of the lid is sealed to the base 20 with the pressure-sensitive adhesive reclosable construction of the present invention. The other portions of the edges are permanently sealed to the base.

The portions which are permanently sealed are indicated at 24, 25 and 26 and are over the turned over edge 22 of the base. Other portions of the edge are sealed with pressure sensitive adhesive and a heat seal in the manner described with respect to the lid in FIGURE 1.

The permanent seal may be achieved, for example, by simply omitting the pressure sensitive adhesive and heat sealing the peelable film to the lid. If necessary, heat seal coatings may be used on both sides of the peelable film for this purpose.

The package shown in FIGURE 4 is particularly useful when the lid member is a flexible film. Because of the limpness of the film, the purchaser might find it difficult to replace the lid. However, if the film is only folded back, and is not completely removed, the film will be replaced more easily. By using this construction, the customer is not able to peel the lid off completely-without tearing itand therefore will only fold it back.

It will be appreciated that various materials may be used for the lid and the peelable film, and the other parts of the package, including paper and plastics such as Saran, polyethylene, polypropylene, polystyrene, polyethylene terephthalate (Mylar) etc. Where paper is used, it may be coated with a barrier layer such as Saran, and, if the paper is to be heat sealed, it may require a coating of heat scalable plastic in the heat seal areas.

The permanent seal may be achieved by heating the members to be sealed while they are pressed together. Heat sealing is widely used in industry and forms no part of the present invention. Information on temperatures to be used and equipment is readily available. It also is possible to use other types of permanent seal, for example the application of a solvent to plastic surfaces, or the wetting of a water soluble adhesive, although these are less convenient than heat sealing. The invention is applicable to a wide variety of packages. It will be appreciated that the concealed pressure sensitive adhesive construction can be used for any type of package closure member. It also will be understood that the pressure sensitive adhesive can be applied to the package itself, rather than the closure, although this construction is somewhat less desirable. That is, it is preferable to have the pressure sensitive adhesive out of the way when the contents of the package are removed. Various other changes may be made in materials, details of construction and mode of operation, without departing from the scope of the invention, as defined in the appended claims.

I claim:

1. A package comprising a receptacle having an opening for receiving and removing a product and a closure member adapted to at least partially close said opening, said closure member having a coating of pressure sensitive adhesive mass on at least a portion of the area thereof which is adjacent said package, and a peelable film, overlying said pressure sensitive adhesive, which is permanently scalable to said package and from which said closure member can be removed without substantial transfer of pressure sensitive adhesive mass to said film, whereby upon permanently sealing said film to said package said closure member may be removed and then resealed to the package.

2. A package comprising a receptacle having an opening for receiving and removing a product and a closure member adapted to at least partially close said opening, said closure member having a coating of pressure sensitive adhesive mass on at least a portion of the area thereof which is adjacent said package, and a peelable film, overlying said pressure sensitive adhesive, which is heat scalable to said package and from which said closure member can be removed Without substantial transfer of pressure sensitive adhesive mass to said film, whereby upon heat sealing said film to said package said closure member may be removed and then rescaled to the package.

3. A package comprising a receptacle having an opening for receiving and removing a product and a closure member adapted to at least partially close said opening, said closure member having a coating of pressure sensitive adhesive mass on at least a portion of the area thereof which is adjacent said package, and a peelable film, overlying said pressure sensitive adhesive, which is permanently sealed to said package and from which said closure member can be removed without substantial transfer of pressure sensitive adhesive mass to said film, whereby said closure member may be removed from and rescaled to said receptacle.

4. A package comprising a receptacle having an opening for receiving and removing a product and a closure member adapted to at least partially close said opening, said closure member having a coating of pressure sensitive adhesive mass on at least a portion of the area thereof which is adjacent said package, and a peelable film, overlying said pressure sensitive adhesive, which is heat sealed to said package and from which said closure member can be removed without substantial transfer of pressure sensitive adhesive mass to said film, whereby said closure member may be removed from and rescaled to said receptacle.

5. A package as set forth in claim 4- in which a portion of the area of said closure member adjacent said receptacle is permanently sealed to the receptable, so that on removing the closure member from said peelable film, the closure member remains attached to the receptacle.

6. A method of closing a package which comprises a receptacle having an opening for receiving and removing a product and a closure member which at least partially closes said opening, said closure member having a coating of pressure sensitive adhesive mass on at least part of the area thereof which is adjacent said package, and a peelable film, overlying said pressure sensitive adhesive, which is heat scalable to said package, and from which said closure member can be removed without sub stantial transfer of pressure sensitive adhesive mass to said film, said method comprising placing said closure member against said receptacle and then heating said receptacle and said peelable film to heat seal said peelable film to said receptacle.

7. A package closure comprising a closure member adapted to at least partially close an opening into a package, a layer of pressure sensitive adhesive mass on said closure member in an area thereof which is adjacent said package, and a peelable film, overlying said pressure sensitive adhesive, which is permanently scalable to said package and from which said closure member can be removed Without substantial transfer of pressure sensitive adhesive mass to said film, whereby, upon permanently sealing said film to the package the closure member may be removed and then rescaled to the package.

8. A package closure comprising a closure member adapted to at least partially close an opening into a package, a layer of pressure sensitive adhesive mass on said closure member in an area thereof which is adjacent said package, and a peelable film, overlying said pressure sensitive adhesive, which is heat scalable to said package and from which said closure member can be removed without substantial transfer of pressure sensitive adhesive mass to said film.

9. A package closure as set forth in claim 8 including a coating of heat sealable plastic on said peelable film to render said peelable film heat scalable to said package.

References Cited by the Examiner UNITED STATES PATENTS 2,271,279 1/1942 Thomas.

2,805,183 9/1957 Higgins.

2,874,836 2/1959 Wertepny 206-78 3,049,224 8 1962 Fredette 20642 3,149,771 9/ 1964 Rear].

FOREIGN PATENTS 931,826 7/1963 Great Britain.

GEORGE O. RALSTON, Primary Examiner.

Claims (1)

1. A PACKAGE COMPRISING A RECEPTACLE HAVING AN OPENING FOR RECEIVING AND REMOVING A PRODUCT AND A CLOSURE MEMBER ADAPTED TO AT LEAST PARTIALLY CLOSE SAID OPENING, SAID CLOSURE MEMBER HAVING A COATING OF PRESSURE SENITIVE ADHESIVE MASS ON AT LEAST A PORTION OF THE AREA THEREOF WHICH IS ADJACENT SAID PACKAGE, AND A PEELABLE FILM, OVERLYING SAID PRESSURE SENSITIVE ADHESIVE, WHICH IS PERMANENTLY SEALABLE TO SAID PACKAGE AND FROM WHICH SAID CLOSURE MEMBER CAN BE REMOVED WITHOUT SUBSTANTIAL TRANSFER OF PRESSURE SENSITIVE ADHESIVE MASS TO SAID FILM, WHEREBY UPON PERMANENTLY SEALING SAID FILM TO SAID PACKAGE SAID CLOSURE MEMBER MAY BE REMOVED AND THEN RESEALED TO THE PACKAGE.
US444271A 1965-03-31 1965-03-31 Reclosable package Expired - Lifetime US3272422A (en)

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Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335939A (en) * 1965-12-27 1967-08-15 Scientific Atlanta Resealable package closure
US3343661A (en) * 1965-06-14 1967-09-26 Crompton & Knowles Corp Reusable package
US3391847A (en) * 1966-07-07 1968-07-09 Aei Corp Disposable bowl
US3438483A (en) * 1967-03-27 1969-04-15 Scientific Atlanta Reclosable package
US3454210A (en) * 1968-05-23 1969-07-08 Standard Packaging Corp Easy opening and reclosable package,film therefor and process
US3455047A (en) * 1967-11-15 1969-07-15 Charles Rex Hoag Muzzle patch for firearms
US3488201A (en) * 1966-12-29 1970-01-06 Jorge H L M Pizarro Food container and method of making same
US3650386A (en) * 1969-08-19 1972-03-21 Dow Chemical Co Resealable container
JPS4818673Y1 (en) * 1970-08-13 1973-05-28
US3827625A (en) * 1972-06-21 1974-08-06 Reclosable Package Corp Reclosable package and controlled release paper for use therein
US3876133A (en) * 1973-05-10 1975-04-08 Phillips Petroleum Co Reclosable slide-on cover for a rectangularly flanged container
US3938686A (en) * 1974-11-18 1976-02-17 Milligan Robert T Paint container
US4452356A (en) * 1982-12-03 1984-06-05 Dahl Robert S Packaging for bakery items
US4498588A (en) * 1984-05-03 1985-02-12 Champion International Corporation Reclosable packaging system and method for forming same
US4616760A (en) * 1985-01-30 1986-10-14 Baxter Travenol Laboratories, Inc. Port and closure assembly for a container
EP0252673A2 (en) * 1986-07-07 1988-01-13 YEN, Yung-Tsai Removable pellicle and method
US4771938A (en) * 1986-07-09 1988-09-20 International Paper Company Carton with reclosable membrane liner
US4915289A (en) * 1987-05-20 1990-04-10 Toyo Seikan Kaisha, Ltd. Easily openable sealed container
US5172854A (en) * 1991-10-16 1992-12-22 Moshe Epstein Reclosable, reusable package
US5305878A (en) * 1993-04-01 1994-04-26 Yen Yung Tsai Packaged optical pellicle
WO1994024019A2 (en) * 1993-04-21 1994-10-27 Allergan, Inc. Contact lens containers and methods of using
US5388757A (en) * 1991-06-25 1995-02-14 Schur International A/S Reclosable sales packing, e.g. for meat slices
EP0847933A1 (en) * 1996-12-11 1998-06-17 Alusuisse Technology & Management AG Lid material
US5882789A (en) * 1995-06-07 1999-03-16 Pechiney Recherche Packaging material for forming an easy-opening reclosable packaging material and package
US5882749A (en) * 1995-06-08 1999-03-16 Pechiney Recherche Easy-opening reclosable package
US6076969A (en) * 1998-12-01 2000-06-20 Sonoco Development, Inc. Resealable closure and method of making same
US6122897A (en) * 1998-12-16 2000-09-26 Mcclure; Paul A. Package creation method and product formed thereby
US6308853B1 (en) 1998-09-01 2001-10-30 Alusuisse Technology & Management, Ltd. Lid material
US20030037512A1 (en) * 2001-08-21 2003-02-27 Arnold Finestone Process for making a self-closing, resealable package
US6918532B2 (en) 2003-04-16 2005-07-19 Kraft Foods Holdings, Inc. Resealable food container
US20050252600A1 (en) * 2004-05-13 2005-11-17 Van Driesten Sjoerd J Method of making a container
US20060127540A1 (en) * 2004-12-13 2006-06-15 Keckeis Edward J Package for storing omelet ingredients
US20070054071A1 (en) * 2005-09-07 2007-03-08 Hans-Rudolf Nageli Packaging container with a laminate and process for manufacturing the laminate
WO2008006907A1 (en) * 2006-07-13 2008-01-17 Sig Technology Ag Cardboard/plastic composite packaging having a pull-off cover, and a method and device for the production thereof
US20080197043A1 (en) * 2006-02-16 2008-08-21 Freeze Timothy E Electronic Compliance Packaging Systems and Methods
US20080214376A1 (en) * 2004-07-23 2008-09-04 Bonenfant Daniel M Tamper-indicating resealable closure
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US7963413B2 (en) 2006-05-23 2011-06-21 Kraft Foods Global Brands Llc Tamper evident resealable closure
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
US8408792B2 (en) 2007-03-30 2013-04-02 Kraft Foods Global Brands Llc Package integrity indicating closure
US9150342B2 (en) 2003-04-16 2015-10-06 Intercontinental Great Brands Llc Resealable tray container
US9205967B2 (en) 2010-01-26 2015-12-08 Generale Biscuit Resealable packaging for food products and method of manufacturing
WO2015189756A1 (en) * 2014-06-08 2015-12-17 Tadbik Ltd. Reclosably sealed cup, and multi-layer web therefor
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
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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
US10000303B2 (en) 2015-02-13 2018-06-19 Direct Pack, Inc. Container comprising integral film lid
US10118741B2 (en) 2008-07-24 2018-11-06 Deborah Lyzenga Package integrity indicating closure

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Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343661A (en) * 1965-06-14 1967-09-26 Crompton & Knowles Corp Reusable package
US3335939A (en) * 1965-12-27 1967-08-15 Scientific Atlanta Resealable package closure
US3391847A (en) * 1966-07-07 1968-07-09 Aei Corp Disposable bowl
US3488201A (en) * 1966-12-29 1970-01-06 Jorge H L M Pizarro Food container and method of making same
US3438483A (en) * 1967-03-27 1969-04-15 Scientific Atlanta Reclosable package
US3455047A (en) * 1967-11-15 1969-07-15 Charles Rex Hoag Muzzle patch for firearms
US3454210A (en) * 1968-05-23 1969-07-08 Standard Packaging Corp Easy opening and reclosable package,film therefor and process
US3650386A (en) * 1969-08-19 1972-03-21 Dow Chemical Co Resealable container
JPS4818673Y1 (en) * 1970-08-13 1973-05-28
US3827625A (en) * 1972-06-21 1974-08-06 Reclosable Package Corp Reclosable package and controlled release paper for use therein
US3876133A (en) * 1973-05-10 1975-04-08 Phillips Petroleum Co Reclosable slide-on cover for a rectangularly flanged container
US3938686A (en) * 1974-11-18 1976-02-17 Milligan Robert T Paint container
US4452356A (en) * 1982-12-03 1984-06-05 Dahl Robert S Packaging for bakery items
US4498588A (en) * 1984-05-03 1985-02-12 Champion International Corporation Reclosable packaging system and method for forming same
US4616760A (en) * 1985-01-30 1986-10-14 Baxter Travenol Laboratories, Inc. Port and closure assembly for a container
EP0252673A2 (en) * 1986-07-07 1988-01-13 YEN, Yung-Tsai Removable pellicle and method
US4737387A (en) * 1986-07-07 1988-04-12 Yen Yung Tsai Removable pellicle and method
EP0252673A3 (en) * 1986-07-07 1990-04-04 YEN, Yung-Tsai Removable pellicle and method
US4771938A (en) * 1986-07-09 1988-09-20 International Paper Company Carton with reclosable membrane liner
US4915289A (en) * 1987-05-20 1990-04-10 Toyo Seikan Kaisha, Ltd. Easily openable sealed container
US5388757A (en) * 1991-06-25 1995-02-14 Schur International A/S Reclosable sales packing, e.g. for meat slices
US5172854A (en) * 1991-10-16 1992-12-22 Moshe Epstein Reclosable, reusable package
US5305878A (en) * 1993-04-01 1994-04-26 Yen Yung Tsai Packaged optical pellicle
WO1994024019A2 (en) * 1993-04-21 1994-10-27 Allergan, Inc. Contact lens containers and methods of using
WO1994024019A3 (en) * 1993-04-21 1994-12-22 Allergan Inc Contact lens containers and methods of using
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