CA2495990A1 - High free shrink, high modulus, low shrink tension film with elastic recovery - Google Patents

High free shrink, high modulus, low shrink tension film with elastic recovery Download PDF

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Publication number
CA2495990A1
CA2495990A1 CA002495990A CA2495990A CA2495990A1 CA 2495990 A1 CA2495990 A1 CA 2495990A1 CA 002495990 A CA002495990 A CA 002495990A CA 2495990 A CA2495990 A CA 2495990A CA 2495990 A1 CA2495990 A1 CA 2495990A1
Authority
CA
Canada
Prior art keywords
shrink
film
elastic recovery
layers including
tension film
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
CA002495990A
Other languages
French (fr)
Other versions
CA2495990C (en
Inventor
William P. Roberts
Ronald D. Moffitt
Richard M. Dayrit
Blaine C. Childress
William J. Gauthier
Scott W. Lambert
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
Cryovac, Inc.
William P. Roberts
Ronald D. Moffitt
Richard M. Dayrit
Blaine C. Childress
William J. Gauthier
Scott W. Lambert
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 Cryovac, Inc., William P. Roberts, Ronald D. Moffitt, Richard M. Dayrit, Blaine C. Childress, William J. Gauthier, Scott W. Lambert filed Critical Cryovac, Inc.
Publication of CA2495990A1 publication Critical patent/CA2495990A1/en
Application granted granted Critical
Publication of CA2495990C publication Critical patent/CA2495990C/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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • 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
    • 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

A film includes a core layer including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefmic polymer; the film having Young's modulus between about 50,000 and about 200,000 psi, free shrink between about 10% and about 80% at 240~F, and shrink tension of less than about 400 psi, or a shrink force of between about 20 and about 180 grams, at 240~F. First and second intermediate layers including an ethylene copolymer having a melt index less than about 2.0 g/10 minutes can be optionally included. Alternatively, a film includes a core layer including an ethylene copolymer having melt index less than about 2.0 g/10 minutes; first and second intermediate layers including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefmic polymer; the film having properties as disclosed above.
CA 2495990 2002-08-05 2003-08-05 High free shrink, high modulus, low shrink tension film with elastic recovery Expired - Fee Related CA2495990C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US40106602P 2002-08-05 2002-08-05
US60/401,066 2002-08-05
PCT/US2003/024406 WO2004012938A1 (en) 2002-08-05 2003-08-05 High free shrink, high modulus, low shrink tension film with elastic recovery

Publications (2)

Publication Number Publication Date
CA2495990A1 true CA2495990A1 (en) 2004-02-12
CA2495990C CA2495990C (en) 2008-02-12

Family

ID=31495919

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2495990 Expired - Fee Related CA2495990C (en) 2002-08-05 2003-08-05 High free shrink, high modulus, low shrink tension film with elastic recovery

Country Status (9)

Country Link
US (1) US6872462B2 (en)
EP (1) EP1526965B1 (en)
JP (1) JP2005534541A (en)
AT (1) ATE465005T1 (en)
AU (1) AU2003263983B2 (en)
CA (1) CA2495990C (en)
DE (1) DE60332244D1 (en)
NZ (1) NZ538623A (en)
WO (1) WO2004012938A1 (en)

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CA2794604C (en) * 2010-04-16 2018-01-09 Liqui-Box Corporation Multi-layer, ethylene polymer-based films with high-density polyethylene based stiffening layer
WO2011130469A2 (en) 2010-04-16 2011-10-20 Liqui-Box Corporation Multi-layer, ethylene polymer-based films with novel polypropylene blend-based stiffening layer
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US9676532B2 (en) 2012-08-15 2017-06-13 Avery Dennison Corporation Packaging reclosure label for high alcohol content products
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Also Published As

Publication number Publication date
WO2004012938A1 (en) 2004-02-12
DE60332244D1 (en) 2010-06-02
CA2495990C (en) 2008-02-12
EP1526965B1 (en) 2010-04-21
AU2003263983B2 (en) 2008-05-08
ATE465005T1 (en) 2010-05-15
AU2003263983A1 (en) 2004-02-23
JP2005534541A (en) 2005-11-17
NZ538623A (en) 2007-01-26
EP1526965A1 (en) 2005-05-04
US20040142195A1 (en) 2004-07-22
US6872462B2 (en) 2005-03-29

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Effective date: 20180806