CA2150820A1 - Multilayer coextruded polyolefin stretch wrap films - Google Patents

Multilayer coextruded polyolefin stretch wrap films

Info

Publication number
CA2150820A1
CA2150820A1 CA002150820A CA2150820A CA2150820A1 CA 2150820 A1 CA2150820 A1 CA 2150820A1 CA 002150820 A CA002150820 A CA 002150820A CA 2150820 A CA2150820 A CA 2150820A CA 2150820 A1 CA2150820 A1 CA 2150820A1
Authority
CA
Canada
Prior art keywords
intermediate layer
films
layers
stretch wrap
multilayer coextruded
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
CA002150820A
Other languages
French (fr)
Other versions
CA2150820C (en
Inventor
Gregory Michael Wilson
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
Gregory Michael Wilson
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 Gregory Michael Wilson, Mobil Oil Corporation, Tenneco Packaging Inc., Pactiv Corporation, Tyco Plastics Services Ag, Covalence Specialty Materials Corp. filed Critical Gregory Michael Wilson
Publication of CA2150820A1 publication Critical patent/CA2150820A1/en
Application granted granted Critical
Publication of CA2150820C publication Critical patent/CA2150820C/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
    • B32B27/32—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
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • 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
    • Y10S428/911—Penetration resistant 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
    • Y10T428/13—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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, 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]
    • 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

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 include at least three layers, the three layers having two outer layers and an intermediate layer positioned between said outer layers, the intermediate layer comprising a mixture of a first linear low density polyethylene and a polyolefin selected from the group consisting of homopolymers of propylene, copolymers of propylene and ethylene and mixtures thereof and at least one of the two outer layers comprising a second linear low density polyethylene. The force required to stretch the films of this invention may be controlled by the ratio of polyethylene to the selected polyolefin of the intermediate layer, by controlling the thickness of the intermediate layer relative to overall film thickness, by controlling the melt flow properties of the intermediate layer polyolefin resin or by a combination thereof.
CA 2150820 1992-12-18 1993-12-13 Multilayer coextruded polyolefin stretch wrap films Expired - Fee Related CA2150820C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/991,902 US5419934A (en) 1992-12-18 1992-12-18 Multilayer coextruded polyolefin stretch wrap films
US07/991,902 1992-12-18
PCT/US1993/012158 WO1994014609A1 (en) 1992-12-18 1993-12-13 Multilayer coextruded polyolefin stretch wrap films

Publications (2)

Publication Number Publication Date
CA2150820A1 true CA2150820A1 (en) 1994-07-07
CA2150820C CA2150820C (en) 2004-08-10

Family

ID=25537701

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2150820 Expired - Fee Related CA2150820C (en) 1992-12-18 1993-12-13 Multilayer coextruded polyolefin stretch wrap films

Country Status (3)

Country Link
US (2) US5419934A (en)
CA (1) CA2150820C (en)
WO (1) WO1994014609A1 (en)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5614297A (en) * 1994-05-19 1997-03-25 Viskase Corporation Polyolefin stretch film
JPH0825593A (en) * 1994-07-13 1996-01-30 Sumitomo Chem Co Ltd Self-adhesive wrapping film
IT1276121B1 (en) * 1995-11-14 1997-10-24 Montell Technology Company Bv EXTENSIBLE MULTILAYER FILM
IT1276120B1 (en) * 1995-11-14 1997-10-24 Montell Technology Company Bv EXTENSIBLE MULTILAYER FILM BASED ON LLDPE
IT1277038B1 (en) * 1995-12-06 1997-11-04 Pentacast Srl POLYETHYLENE MULTI-LAYER FILM
US5756219A (en) * 1996-01-16 1998-05-26 Aep Industries, Inc. Industrial stretch films
US5998017A (en) * 1996-03-12 1999-12-07 Tenneco Packaging Stretch wrap films
US5752362A (en) * 1996-03-12 1998-05-19 Tenneco Packaging Stretch wrap films
US5814399A (en) * 1996-03-12 1998-09-29 Tenneco Packaging Stretch wrap films
US5749202A (en) * 1996-03-12 1998-05-12 Tenneco Packaging Stretch wrap films
US5902684A (en) * 1996-03-12 1999-05-11 Tenneco Packaging Inc. Multilayered Metallocene stretch wrap films
US6086967A (en) * 1996-11-06 2000-07-11 The Dow Chemical Company Modified atmosphere films useful in the packaging of perishable food
JP2000506465A (en) * 1996-12-11 2000-05-30 モンテル テクノロジー カンパニー ビーブイ Heat-shrinkable polyolefin bilayer film
US5989725A (en) * 1997-01-16 1999-11-23 Tenneco Packaging Clear high molecular weight film
US6231975B1 (en) * 1997-01-24 2001-05-15 Mobil Oil Corporation Sealable film
US6013378A (en) * 1997-03-17 2000-01-11 Tenneco Packaging HMW HDPE film with improved impact strength
US6132827A (en) * 1997-05-19 2000-10-17 Aep Industries, Inc. Tacky stretch film and method of making and using the same
US5907942A (en) * 1997-05-21 1999-06-01 Tenneco Packaging Stretch wrap films
US6093480A (en) * 1997-05-21 2000-07-25 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
IT1292138B1 (en) * 1997-06-12 1999-01-25 Montell Technology Company Bv EXTENSIBLE MULTILAYER FILM
US5846607A (en) * 1997-06-30 1998-12-08 Basf Corporation Process for producing customized thermoplastic resins
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
US6237308B1 (en) 1999-05-14 2001-05-29 Glopak Inc. High-speed pouch forming, sealing and filling machine, method of operation, and multi-layer film therefore
US6602598B1 (en) 1999-12-07 2003-08-05 Sls Patent Corporation Quiet unwind stretch wrap film
US6528134B1 (en) * 2000-06-21 2003-03-04 Pechiney Emballage Flexible Europe Non-wax packaging film
US6440533B1 (en) 2000-09-22 2002-08-27 Tredegar Film Products Corporation PVC replacement film
ATE293535T1 (en) * 2002-02-04 2005-05-15 Borealis Gmbh MULTI-LAYER FILM
US7205358B2 (en) * 2002-04-24 2007-04-17 Sumitomo Chemical Company, Limited Method for producing a extruded ethylene copolymer
US6893722B2 (en) * 2002-04-29 2005-05-17 Exxonmobil Oil Corporation Cationic, amino-functional, adhesion-promoting polymer for curable inks and other plastic film coatings, and plastic film comprising such polymer
US7195818B2 (en) 2002-05-01 2007-03-27 Exxonmobil Oil Corporation Sealable multi-layer opaque film
ATE378169T1 (en) * 2002-09-26 2007-11-15 Marko I R D C Inc ELASTIC FILM WITH ANTI-SLIP ADDITIVE
US20040105994A1 (en) * 2002-12-03 2004-06-03 Pang-Chia Lu Thermoplastic film structures with a low melting point outer layer
US7147930B2 (en) * 2003-12-16 2006-12-12 Curwood, Inc. Heat-shrinkable packaging films with improved sealing properties and articles made thereof
US20060046005A1 (en) * 2004-08-24 2006-03-02 Mcgee Dennis E Coating for polymeric labels
TWI386310B (en) * 2005-10-07 2013-02-21 Dow Global Technologies Llc Multilayer elastic film structures
WO2009049418A1 (en) * 2007-10-15 2009-04-23 Marko I.R.D.C. Inc. Abrasion resistant thermoplastic film
US9930297B2 (en) 2010-04-30 2018-03-27 Becton, Dickinson And Company System and method for acquiring images of medication preparations
US9790012B2 (en) 2010-07-19 2017-10-17 The Glad Products Company Incrementally stretched films with tailored properties and methods for making the same
PL223808B1 (en) * 2012-02-16 2016-11-30 Zakład Produkcji Folii Efekt Plus Spółka Z Ograniczoną Method for preparing a five-stretch polyolefin film
US9346247B2 (en) * 2013-05-01 2016-05-24 Paragon Films, Inc. Stretch films containing random copolymer polypropylene resins in adjacent layers of a nanolayer structure
CN109703147A (en) * 2013-05-01 2019-05-03 艾利丹尼森公司 Plural layers
US11760851B2 (en) 2014-06-30 2023-09-19 Formosa Plastics Corporation, U.S.A. Cast film component layer exhibiting an outstanding cling property
US10679342B2 (en) 2014-09-08 2020-06-09 Becton, Dickinson And Company Aerodynamically streamlined enclosure for input devices of a medication preparation system
WO2016094281A1 (en) 2014-12-11 2016-06-16 E. I. Du Pont De Nemours And Company Stretch wrapping film
AT517857B1 (en) 2015-10-19 2018-12-15 Coveris Flexibles Austria Gmbh Multilayer elastic film
US11441013B2 (en) 2018-03-29 2022-09-13 Dow Global Technologies Llc Method to adjust the elongation required to effect a color change in polymeric stretch films incorporating mechanochromic dyes
WO2021122262A1 (en) * 2019-12-16 2021-06-24 Sabic Global Technologies B.V. Multilayer films for packaging rubber bales

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB632416I5 (en) * 1956-03-01 1976-03-09
US4050221A (en) * 1973-04-04 1977-09-27 Lantech, Inc. Stretch-wrapped package, process and apparatus
US3986611A (en) * 1973-07-06 1976-10-19 Union Carbide Corporation Cling film overwrap for palletized articles
US4079565A (en) * 1974-03-25 1978-03-21 Lantech Inc. Stretch-wrapped package, process and apparatus
US4011382A (en) * 1975-03-10 1977-03-08 Union Carbide Corporation Preparation of low and medium density ethylene polymer in fluid bed reactor
JPS5952643B2 (en) * 1977-01-27 1984-12-20 三井化学株式会社 ethylene copolymer
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
JPS5940683B2 (en) * 1980-12-13 1984-10-02 シンワ化学工業株式会社 Pallet stretch packaging method using composite stretch film
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
US4522987A (en) * 1982-07-09 1985-06-11 Phillips Petroleum Company Low density polyethylene
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
JPS6189040A (en) * 1984-10-08 1986-05-07 三菱化学株式会社 Film for stretching packaging
US4963388A (en) * 1987-04-17 1990-10-16 Mobil Oil Corporation Method for forming particle-impregnated one-sided cling stretch wrap film
US5273809A (en) * 1987-04-17 1993-12-28 Mobil Oil Corporation Multilayer stretch wrap film inherently exhibiting a significant cling property
US4833017A (en) * 1987-04-17 1989-05-23 Mobil Oil Corporation Particle-impregnated one-sided cling stretch wrap film
US5066526A (en) * 1987-11-19 1991-11-19 Exxon Chemical Patents Inc. Thermoplastic films for use in stretch/cling applications
US5049423A (en) * 1987-11-19 1991-09-17 Exxon Chemical Patents Inc. Composite thermoplastic films for use in stretch/cling applications
EP0317166B2 (en) * 1987-11-19 1998-12-23 Exxon Chemical Patents Inc. Thermoplastic films for use in stretch/cling applications
US5147708A (en) * 1987-11-19 1992-09-15 Exxon Chemical Patents Inc. Thermoplastic films for use in stretch/cling applications
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
US5261536A (en) * 1988-10-25 1993-11-16 Mobil Oil Corporation Multi-layer coextruded polyolefin stretch wrap films
GB8914703D0 (en) * 1989-06-27 1989-08-16 Dow Europ Sa Bioriented film
US5232767A (en) * 1989-06-28 1993-08-03 Kureha Kagaku Kogyo Kabushiki Kaisha Heat-shrinkable laminate film
US5114763A (en) * 1990-12-28 1992-05-19 Exxon Chemical Patents Inc. Tackified polyethylene layers in stretch/cling films
US5225257A (en) * 1992-06-04 1993-07-06 Exxon Chemical Patents Inc Fluorine treatment of stretch/cling films
US5334428A (en) * 1992-12-28 1994-08-02 Mobil Oil Corporation Multilayer coextruded linear low density polyethylene stretch wrap films

Also Published As

Publication number Publication date
US5516475A (en) 1996-05-14
CA2150820C (en) 2004-08-10
US5419934A (en) 1995-05-30
WO1994014609A1 (en) 1994-07-07

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20131213