CA2110093A1 - Multilayer coextruded linear low density polyethylene stretch wrap films - Google Patents

Multilayer coextruded linear low density polyethylene stretch wrap films

Info

Publication number
CA2110093A1
CA2110093A1 CA002110093A CA2110093A CA2110093A1 CA 2110093 A1 CA2110093 A1 CA 2110093A1 CA 002110093 A CA002110093 A CA 002110093A CA 2110093 A CA2110093 A CA 2110093A CA 2110093 A1 CA2110093 A1 CA 2110093A1
Authority
CA
Canada
Prior art keywords
low density
linear low
melt index
density copolymer
stretch wrap
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
CA002110093A
Other languages
French (fr)
Other versions
CA2110093C (en
Inventor
David Vincent Dobreski
Michael Eugene Leach
George Norman Eichbauer
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.)
Covalence Specialty Materials Corp
Original Assignee
David Vincent Dobreski
Michael Eugene Leach
George Norman Eichbauer
Mobil Oil Corporation
Tenneco Packaging Inc.
Pactiv Corporation
Tyco Plastics Services Ag
Covalence Specialty Materials Corp.
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 David Vincent Dobreski, Michael Eugene Leach, George Norman Eichbauer, Mobil Oil Corporation, Tenneco Packaging Inc., Pactiv Corporation, Tyco Plastics Services Ag, Covalence Specialty Materials Corp. filed Critical David Vincent Dobreski
Publication of CA2110093A1 publication Critical patent/CA2110093A1/en
Application granted granted Critical
Publication of CA2110093C publication Critical patent/CA2110093C/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
    • 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
    • B32B7/02—Physical, chemical or physicochemical 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2310/00—Masterbatches
    • 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.]
    • Y10T428/1328—Shrinkable or shrunk [e.g., due to heat, solvent, volatile agent, restraint removal, 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
    • Y10T428/24—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
    • Y10T428/24992—Density or compression of components
    • 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
    • Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon

Abstract

The present invention relates to multilayer coextruded thermoplastic stretch wrap films useful for the packaging or palletizing of goods. More particularly the films of this invention comprise at least three layers having two outer layers and at least one intermediate layer placed between the outer layers. The intermediate layer includes a low melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms, the low melt index linear low density copolymer having a melt index of between about 0.5 to about 2.5. At least one of the two outer layers includes a high melt index linear low density copolymer of ethylene and a minor amount of at least one alpha olefin having from 4 to 10 carbon atoms, the high melt index linear low density copolymer having a melt index of greater than about 2.5, the high melt index linear low density copolymer containing from about 3.5 to about 15 weight percent n-hexane extractibles. The n-hexane extractibles are present in an amount sufficient to cause the stretch wrap film to exert a cling force to itself or other surfaces when used in the stretch overwrap packaging of articles.
CA 2110093 1992-12-28 1993-11-26 Multilayer coextruded linear low density polyethylene stretch wrap films Expired - Fee Related CA2110093C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/997,411 US5334428A (en) 1992-12-28 1992-12-28 Multilayer coextruded linear low density polyethylene stretch wrap films
US07/997,411 1992-12-28

Publications (2)

Publication Number Publication Date
CA2110093A1 true CA2110093A1 (en) 1994-06-29
CA2110093C CA2110093C (en) 2004-02-10

Family

ID=25543986

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2110093 Expired - Fee Related CA2110093C (en) 1992-12-28 1993-11-26 Multilayer coextruded linear low density polyethylene stretch wrap films

Country Status (2)

Country Link
US (1) US5334428A (en)
CA (1) CA2110093C (en)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6585843B2 (en) 1992-01-10 2003-07-01 Super Sack Mfg. Corp. Anti-static, anti-corrosion, and/or anti-microbial films, fabrics, and articles
US6592702B2 (en) 1992-01-10 2003-07-15 Super Sack Mfg. Corp. Anti-static, anti-corrosion, and/or anti-microbial films, fabrics, and articles
US5419934A (en) * 1992-12-18 1995-05-30 Mobil Oil Corporation Multilayer coextruded polyolefin stretch wrap films
NZ247940A (en) * 1993-06-21 1995-05-26 Grace W R & Co Heat-shrinkable thermoplastics packaging film comprising at least two identical films
US5407732A (en) * 1993-10-29 1995-04-18 Mobil Oil Corporation Multi-layer coextruded polyolefin stretch wrap films
EP0732994B1 (en) * 1993-12-08 1998-07-22 The Dow Chemical Company Stretch cling film and fabrication method
US5614297A (en) * 1994-05-19 1997-03-25 Viskase Corporation Polyolefin stretch film
US5569693A (en) * 1995-06-05 1996-10-29 Borden Inc. High stretch film for pallet wrapping
IT1277038B1 (en) * 1995-12-06 1997-11-04 Pentacast Srl POLYETHYLENE MULTI-LAYER FILM
US5662758A (en) 1996-01-10 1997-09-02 The Procter & Gamble Company Composite material releasably sealable to a target surface when pressed thereagainst and method of making
US5976682A (en) * 1996-03-12 1999-11-02 Tenneco Packaging Stretch wrap films
USRE38429E1 (en) * 1996-03-12 2004-02-17 Tyco Plastics Services Ag Stretch wrap films
US5902684A (en) * 1996-03-12 1999-05-11 Tenneco Packaging Inc. Multilayered Metallocene stretch wrap films
US5998017A (en) * 1996-03-12 1999-12-07 Tenneco Packaging Stretch wrap films
US5965235A (en) 1996-11-08 1999-10-12 The Procter & Gamble Co. Three-dimensional, amorphous-patterned, nesting-resistant sheet materials and method and apparatus for making same
US5989725A (en) * 1997-01-16 1999-11-23 Tenneco Packaging Clear high molecular weight film
US6013378A (en) * 1997-03-17 2000-01-11 Tenneco Packaging HMW HDPE film with improved impact strength
US6093480A (en) * 1997-05-21 2000-07-25 Tenneco Packaging Stretch wrap films
US5907942A (en) * 1997-05-21 1999-06-01 Tenneco Packaging Stretch wrap films
US5922441A (en) * 1997-06-11 1999-07-13 Tenneco Packaging Inc. Stretch wrap films
US5907943A (en) * 1997-06-11 1999-06-01 Tenneco Packaging Inc. Stretch wrap films
EP0991716B1 (en) * 1997-06-25 2004-01-28 Eastman Chemical Company Monolayer film
US6197887B1 (en) 1997-09-12 2001-03-06 Eastman Chemical Company Compositions having particular utility as stretch wrap cling film
US6070394A (en) * 1997-09-12 2000-06-06 Eastman Chemical Company Lownoise stretch wrapping process
US6204335B1 (en) 1997-09-12 2001-03-20 Eastman Chemical Company Compositions of linear ultra low density polyethylene and propylene polymers and films therefrom
US6153702A (en) 1997-09-12 2000-11-28 Eastman Chemical Company Polymers, and novel compositions and films therefrom
US6083611A (en) * 1997-11-12 2000-07-04 Tenneco Packaging, Inc. Roll wrap film
US6420022B2 (en) 1998-02-02 2002-07-16 Reynolds Consumer Products, Inc. Differential cling forage wrapping film; wrapped bale; method for producing differential cling film; and method for wrapping forage
US6777046B1 (en) 1998-07-07 2004-08-17 Curwood, Inc. Puncture resistant, high shrink films, blends, and process
US6148496A (en) * 1999-04-09 2000-11-21 The Procter & Gamble Company Method for making a seamless apertured metal belt
US6193918B1 (en) 1999-04-09 2001-02-27 The Procter & Gamble Company High speed embossing and adhesive printing process and apparatus
US6421052B1 (en) 1999-04-09 2002-07-16 The Procter & Gamble Company Method of seaming and expanding amorphous patterns
US6872342B2 (en) * 1999-04-09 2005-03-29 The Procter & Gamble Company Embossing and adhesive printing process
FR2795995B1 (en) * 1999-07-08 2001-10-05 Plastiques De La Deome PROCESS AND DEVICE FOR MANUFACTURING AN ADHESIVE FILM FOR PALLETIZATION AND FILM OBTAINED
US6265055B1 (en) 1999-10-13 2001-07-24 David Simpson Multilayer stretch cling film
US6495245B1 (en) * 1999-11-20 2002-12-17 Intertape, Inc. Hand wrap multilayer film products
US6492010B1 (en) * 1999-11-20 2002-12-10 Intertape, Inc. Premium stretch multilayer film products
US6602598B1 (en) 1999-12-07 2003-08-05 Sls Patent Corporation Quiet unwind stretch wrap film
US6541098B2 (en) 2000-12-22 2003-04-01 Avery Dennison Corporation Three-dimensional flexible adhesive film structures
US6881471B2 (en) * 2001-10-25 2005-04-19 The Procter & Gamble Company High speed embossing and adhesive printing process and apparatus
US20060286356A1 (en) 2002-02-27 2006-12-21 Thomas Toby R Web materials with active agent
US20060110080A1 (en) * 2002-02-27 2006-05-25 Thomas Toby R Packages and structures with selective dosing of active agent
US7497623B2 (en) 2002-02-27 2009-03-03 Pactiv Corporation Packages with active agents
US20070178262A1 (en) * 2006-01-27 2007-08-02 The Procter & Gamble Company Storage wrap material
US8029531B2 (en) * 2006-07-11 2011-10-04 Cambridge Endoscopic Devices, Inc. Surgical instrument
US8197927B2 (en) * 2007-06-15 2012-06-12 Berry Plastics Corporation Slip-cling stretch film
US7611768B2 (en) 2007-06-15 2009-11-03 Berry Plastics Corporation Slip-cling stretch film
US8012554B2 (en) * 2007-09-12 2011-09-06 Pactiv Corporation Bags having odor management capabilities
US8080294B2 (en) * 2008-05-16 2011-12-20 Exxonmobil Oil Corporation Biaxially oriented LLDPE blends
US8167490B2 (en) * 2009-04-22 2012-05-01 Reynolds Consumer Products Inc. Multilayer stretchy drawstring
WO2020014138A1 (en) * 2018-07-09 2020-01-16 Exxonmobil Chemical Patents Inc. Polyethylene cast films and methods for making the same
WO2020251764A1 (en) * 2019-06-10 2020-12-17 Univation Technologies, Llc Polyethylene blend
EP4076952B1 (en) * 2019-12-16 2023-12-06 SABIC Global Technologies B.V. Multilayer films for packaging rubber bales
US20230036082A1 (en) * 2021-04-07 2023-02-02 Paragon Films, Inc. Low Force-To-Stretch Film, Prestretched In-Process, and Compositions Therefore

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011382A (en) * 1975-03-10 1977-03-08 Union Carbide Corporation Preparation of low and medium density ethylene polymer in fluid bed reactor
US4399180A (en) * 1978-09-15 1983-08-16 Mobil Oil Corporation Coextruded thermoplastic stretch-wrap
CA1129138A (en) * 1979-10-05 1982-08-03 Chung-Sin Su Cling film composition
US4364981A (en) * 1979-12-28 1982-12-21 Union Carbide Corporation Three layer film having a core layer of low pressure, low density polyethylene
US4367256A (en) * 1981-05-15 1983-01-04 Union Carbide Corporation Cling-wrap polyethylene film
US4399173A (en) * 1982-01-04 1983-08-16 Union Carbide Corporation Multilayer films comprising low pressure, low density polyethylene
US4418114A (en) * 1982-04-29 1983-11-29 Mobil Oil Corporation Coextruded thermoplastic stretch-wrap
US4511609A (en) * 1982-09-30 1985-04-16 Union Carbide Corporation Multilayer trash bag film
US4565720A (en) * 1983-07-27 1986-01-21 Idemitsu Petrochemical Co., Ltd. Packaging bag
US4657811A (en) * 1983-08-30 1987-04-14 Mobil Oil Corporation High performance three layer polyolefin film
JPS60105541A (en) * 1983-11-14 1985-06-11 出光石油化学株式会社 Multilayer film
US4518654A (en) * 1983-12-23 1985-05-21 Mobil Oil Corporation One-sided cling stretch wrap
DE3541478A1 (en) * 1985-11-23 1987-05-27 Beiersdorf Ag HEART VALVE PROSTHESIS AND METHOD FOR THE PRODUCTION THEREOF
US4820589A (en) * 1986-11-17 1989-04-11 Mobil Oil Corporation Cling/no cling-slip stretch wrap film
US4963388A (en) * 1987-04-17 1990-10-16 Mobil Oil Corporation Method for forming particle-impregnated one-sided cling stretch wrap film
US4996094A (en) * 1988-09-26 1991-02-26 Mobil Oil Corporation One-sided cling/one-sided slip stretch wrap films
US5248547A (en) * 1988-10-25 1993-09-28 Mobil Oil Corporation Multi-layer coextruded polyolefin stretch wrap films
US5019315A (en) * 1988-10-25 1991-05-28 Mobil Oil Corporation Preparing multi-layer coextruded polyolefin stretch wrap films

Also Published As

Publication number Publication date
US5334428A (en) 1994-08-02
CA2110093C (en) 2004-02-10

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