CA2091016A1 - Cook-in film with improved seal strength and optics - Google Patents

Cook-in film with improved seal strength and optics

Info

Publication number
CA2091016A1
CA2091016A1 CA002091016A CA2091016A CA2091016A1 CA 2091016 A1 CA2091016 A1 CA 2091016A1 CA 002091016 A CA002091016 A CA 002091016A CA 2091016 A CA2091016 A CA 2091016A CA 2091016 A1 CA2091016 A1 CA 2091016A1
Authority
CA
Canada
Prior art keywords
layer
cook
seal strength
core layer
optics
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
CA002091016A
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 LLC
Original Assignee
WR 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
Application filed by WR Grace and Co Conn filed Critical WR Grace and Co Conn
Publication of CA2091016A1 publication Critical patent/CA2091016A1/en
Application granted granted Critical
Publication of CA2091016C publication Critical patent/CA2091016C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered 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
    • B32B27/08—Layered 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B32B2323/046—LDPE, i.e. low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/91—Product with molecular orientation
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1324—Flexible food casing [e.g., sausage type, etc.]
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1379—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • Y10T428/1383—Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer]
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813—Heat or solvent activated or sealable
    • Y10T428/2817—Heat sealable
    • Y10T428/2826—Synthetic resin or polymer
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31928—Ester, 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)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US858,825 1992-03-27
US07/858,825 US5298326A (en) 1992-03-27 1992-03-27 Cook in film with improved seal strength and optics

Publications (2)

Publication Number Publication Date
CA2091016A1 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 (6)

Country Link
US (1) US5298326A (en)
JP (1) JPH06270359A (en)
AU (1) AU665611B2 (en)
CA (1) CA2091016C (en)
NZ (1) NZ245990A (en)
ZA (1) ZA931341B (en)

Families Citing this family (26)

* 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 films obtained by single-site catalysis.
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
WO1997036798A1 (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
ATE262413T1 (en) 1997-01-21 2004-04-15 Cryovac Inc PACKAGING FILM AND CONTAINERS MADE THEREOF
US6045882A (en) * 1998-07-16 2000-04-04 Viskase Corporation Multilayer thin plastic film, useful for shrink overwrap packaging
DE19835745A1 (en) 1998-08-07 2000-02-17 Wolff Walsrode Ag Gastight laminating film and packaging materials made from it
US20010008660A1 (en) * 1998-08-07 2001-07-19 Alan D. Stall Multilayer barrier shrink film
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
EP3313743A4 (en) * 2015-06-26 2019-02-13 Nypro Inc. Food product container and composition for same
AR119229A1 (en) * 2019-06-28 2021-12-01 Dow Global Technologies Llc MULTILAYER HEAT RESISTANT POLYETHYLENE FILMS FOR HIGH SPEED FLEXIBLE PACKAGING LINES
AR119189A1 (en) 2019-06-28 2021-12-01 Dow Global Technologies Llc FLEXIBLE PACKAGING FILM LAMINATES AND METHOD FOR PRODUCING THEM BY THERMAL LAMINATION

Family Cites Families (14)

* 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 OCH OMHOELJANDE AV PASTAARTADE LISMEDEL SPECIELLT BASKET OCH SMAELTOST FOERPACKAD I FORM AV 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 Single-layer elastic tubular film made of polyamide for packaging pasty substances, in particular foods, which are packaged hot or are subjected to a heat treatment after being packaged, and a process for their production
US4411919A (en) * 1982-08-16 1983-10-25 W. R. Grace & Co., Cryovac Division Meat adhearing cook-in packaging
IT1153003B (en) * 1982-11-03 1987-01-14 Grace W R & Co LAMINATED FILMS FOR PACKAGING AND RELATED ITEMS WITH IMPROVED RESISTANCE TO HEAT TREATMENTS
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
US4877022A (en) * 1988-12-30 1989-10-31 Tony Christianson Skin diving snorkel

Also Published As

Publication number Publication date
CA2091016C (en) 2003-05-13
NZ245990A (en) 1996-06-25
AU665611B2 (en) 1996-01-11
JPH06270359A (en) 1994-09-27
US5298326A (en) 1994-03-29
ZA931341B (en) 1993-09-24
AU3388093A (en) 1993-09-30

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