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Cook-in film with improved seal strength and optics

Info

Publication number
CA2091016A1
CA2091016A1 CA 2091016 CA2091016A CA2091016A1 CA 2091016 A1 CA2091016 A1 CA 2091016A1 CA 2091016 CA2091016 CA 2091016 CA 2091016 A CA2091016 A CA 2091016A CA 2091016 A1 CA2091016 A1 CA 2091016A1
Authority
CA
Grant status
Application
Patent type
Prior art keywords
layer
material
improved
core
cook
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.)
Granted
Application number
CA 2091016
Other languages
French (fr)
Other versions
CA2091016C (en )
Inventor
Lawrence R. Norpoth
Donna S. Bentley
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.)
Cryovac Inc
Original Assignee
W R Grace and Co-Conn
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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers
    • B32B7/02Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers in respect of physical properties, e.g. hardness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers
    • B32B7/04Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers characterised by the connection of layers
    • B32B7/12Layered products characterised by the relation between layers, i.e. products comprising layers having different physical properties and products characterised by the interconnection of layers characterised by the connection of layers using an adhesive, i.e. any interposed material having adhesive or bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00Polyalkenes
    • B32B2323/04Polyethylene
    • B32B2323/046LDPE, i.e. low density polyethylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00Containers; Receptacles
    • B32B2439/70Food packaging
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/91Product with molecular orientation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1324Flexible food casing [e.g., sausage type, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1379Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • Y10T428/1383Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/28Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813Heat or solvent activated or sealable
    • Y10T428/2817Heat sealable
    • Y10T428/2826Synthetic resin or polymer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • Y10T428/31913Monoolefin polymer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • Y10T428/31928Ester, halide or nitrile of addition polymer

Abstract

Multiple layer cook-in films are disclosed from which packages such as bags or casings can be made. The films have a first food contact layer with a core layer adhered thereto which includes a blend of a polymeric material having a high molecular weight and a fractional melt index and an ethylene alpha-olefin copolymer. The film further includes an abuse layer which has, at least, a polymeric material having a high molecular weight and a fractional melt index. Improved hold cold seal strength fresh and over time, improved orientation processing and lower shrink temperatures are obtained with the present core layer. The abuse layer and core layer adds to the processability of the material and improves optics.
CA 2091016 1992-03-27 1993-03-04 Cook-in film with improved seal strength and optics Expired - Fee Related CA2091016C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US07858825 US5298326A (en) 1992-03-27 1992-03-27 Cook in film with improved seal strength and optics
US858,825 1992-03-27

Publications (2)

Publication Number Publication Date
CA2091016A1 true true CA2091016A1 (en) 1993-09-28
CA2091016C CA2091016C (en) 2003-05-13

Family

ID=25329286

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2091016 Expired - Fee Related CA2091016C (en) 1992-03-27 1993-03-04 Cook-in film with improved seal strength and optics

Country Status (3)

Country Link
US (1) US5298326A (en)
JP (1) JPH06270359A (en)
CA (1) CA2091016C (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69333773T2 (en) 1992-11-13 2006-04-06 Cryovac, Inc. Heat-shrinkable, produced by single-site catalysis copolymers containing films.
US7316833B1 (en) 1993-06-24 2008-01-08 Penchiney Emballage Flexible Europe Multi-layer thermoplastic films and packages made therefrom
US5462807A (en) * 1993-08-20 1995-10-31 Exxon Chemical Patents Inc. Heat sealable films and articles
US5948490A (en) * 1993-11-18 1999-09-07 Plicon, Inc. Printed cook-in shrink film
US5552170A (en) * 1994-01-31 1996-09-03 W. R. Grace & Co.-Conn. Food-containing sustained shrink force cook-in film
US6682825B1 (en) * 1994-06-06 2004-01-27 Cryovac, Inc. Films having enhanced sealing characteristics and packages containing same
US6287613B1 (en) * 1994-12-12 2001-09-11 Cryovac Inc Patch bag comprising homogeneous ethylene/alpha-olefin copolymer
US5866214A (en) * 1995-07-28 1999-02-02 W. R. Grace & Co.-Conn. Film backseamed casings therefrom, and packaged product using same
WO1997036799A1 (en) * 1996-04-01 1997-10-09 Cryovac, Inc. Modifier transfer film and method of cooking a food product
US5759648A (en) * 1996-07-05 1998-06-02 Viskase Corporation Multilayer plastic film, useful for packaging a cook-in foodstuff
US6333061B1 (en) 1996-11-22 2001-12-25 Cryovac, Inc. Packaging article
US6558760B1 (en) 1997-01-21 2003-05-06 Cryovac, Inc. Packaging film and containers made therefrom
US6045882A (en) * 1998-07-16 2000-04-04 Viskase Corporation Multilayer thin plastic film, useful for shrink overwrap packaging
US20010008660A1 (en) * 1998-08-07 2001-07-19 Alan D. Stall Multilayer barrier shrink film
DE19835745A1 (en) 1998-08-07 2000-02-17 Wolff Walsrode Ag Gas density and laminating film prepared therefrom packaging materials
US6294264B1 (en) * 1999-03-30 2001-09-25 Cryovac, Inc. Oriented cook-in film with good interply adhesion
CA2271973C (en) * 1999-05-14 2006-06-20 Glopak Inc. High-speed pouch forming, sealing and filling machine, method of operation, and multi-layer film therefore
US7338691B2 (en) * 2001-07-27 2008-03-04 Cryovac, Inc. Cook-in patch bag and process for using same
US7276269B2 (en) * 2003-12-10 2007-10-02 Curwood, Inc. Frangible heat-sealable films for cook-in applications and packages made thereof
US7147930B2 (en) * 2003-12-16 2006-12-12 Curwood, Inc. Heat-shrinkable packaging films with improved sealing properties and articles made thereof
US7687123B2 (en) * 2007-01-29 2010-03-30 Cryovac, Inc. Shrink film containing semi-crystalline polyamide and process for making same
US20080182051A1 (en) * 2007-01-29 2008-07-31 Cryovac, Inc. Heat shrinkable retortable packaging article and process for preparing retorted packaged product
US7744806B2 (en) * 2007-01-29 2010-06-29 Cryovac, Inc. Process for making shrink film comprising rapidly-quenched semi-crystalline polyamide

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI66278C (en) * 1978-11-18 1984-10-10 Becker & Co Naturinwerk Slangfolie Foer foerpackning Science omhoeljande of pastaartade lismedel are particularly useful sil Science smaeltost foerpackad the form of kenrv
US4448792A (en) * 1982-07-26 1984-05-15 W. R. Grace & Co., Cryovac Division Pasteurizable and cook-in shrink bag constructed of a multilayer film
DE3227945C2 (en) * 1982-07-27 1986-07-24 Naturin-Werk Becker & Co, 6940 Weinheim, De
US4411919A (en) * 1982-08-16 1983-10-25 W. R. Grace & Co., Cryovac Division Meat adhearing cook-in packaging
NL191205C (en) * 1982-11-03 1995-03-16 Grace W R & Co Laminated heat-shrinkable multilayer film.
US4469742A (en) * 1983-01-31 1984-09-04 W. R. Grace & Co., Cryovac Div. Pasteurizable, cook-in shrink film
US4608302A (en) * 1985-01-30 1986-08-26 W. R. Grace & Co., Cryovac Div. Oriented films from propylene copolymers and unplasticized saran
US4879124A (en) * 1985-10-08 1989-11-07 W. R. Grace & Co.-Conn Perforated cook-in shrink bag
US4762748A (en) * 1986-06-30 1988-08-09 W. R. Grace & Co. Multilayer film with better layer adhesion
US4855183A (en) * 1986-11-17 1989-08-08 W. R. Grace & Co.-Conn. Multiple-layer, cook-in film
US4937112A (en) * 1987-12-18 1990-06-26 W. R. Grace & Co.-Conn. High strength coextruded film for chub packaging
US4977022A (en) * 1988-03-15 1990-12-11 W. R. Grace & Co.-Conn. Barrier stretch film
US4909726A (en) * 1988-03-24 1990-03-20 Grumman Aerospace Corporation Impact-resistant film for chub packaging

Also Published As

Publication number Publication date Type
US5298326A (en) 1994-03-29 grant
CA2091016C (en) 2003-05-13 grant
JPH06270359A (en) 1994-09-27 application

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