GB1392334A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1392334A – Laminate of thermoplastic polymers
– Google Patents

GB1392334A – Laminate of thermoplastic polymers
– Google Patents
Laminate of thermoplastic polymers

Info

Publication number
GB1392334A

GB1392334A
GB1446372A
GB1446372A
GB1392334A
GB 1392334 A
GB1392334 A
GB 1392334A
GB 1446372 A
GB1446372 A
GB 1446372A
GB 1446372 A
GB1446372 A
GB 1446372A
GB 1392334 A
GB1392334 A
GB 1392334A
Authority
GB
United Kingdom
Prior art keywords
laminate
copolymer
film
vinyl acetate
barrier layer
Prior art date
1971-03-30
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.)

Expired

Application number
GB1446372A
Inventor
Harri Jouna Brax
Joseph Frederick Porinchak
Alan Stuart Weinberg
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.)

WR Grace and Co Conn

WR Grace and Co

Original Assignee
WR Grace and Co Conn
WR Grace and Co
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.)
1971-03-30
Filing date
1972-03-28
Publication date
1975-04-30
Family has litigation

First worldwide family litigation filed
litigation
Critical
https://patents.darts-ip.com/?family=22440279&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB1392334(A)
«Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1972-03-28
Application filed by WR Grace and Co Conn, WR Grace and Co
filed
Critical
WR Grace and Co Conn

1975-04-30
Publication of GB1392334A
publication
Critical
patent/GB1392334A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

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

C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances

C08J7/04—Coating

C08J7/048—Forming gas barrier coatings

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor

B29C48/001—Combinations of extrusion moulding with other shaping operations

B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die

B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die

B29C48/0016—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die using a plurality of extrusion dies

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor

B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor

B29C48/16—Articles comprising two or more components, e.g. co-extruded layers

B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers

B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces

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

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

B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (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

B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers

B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF

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

B32B27/32—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

C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances

C08J7/04—Coating

C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder

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

C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances

C08J7/04—Coating

C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers

C—CHEMISTRY; METALLURGY

C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON

C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers

C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment

C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms

C08L27/08—Homopolymers or copolymers of vinylidene chloride

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor

B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

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

B32B38/00—Ancillary operations in connection with laminating processes

B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching

B32B2038/0028—Stretching, elongating

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

B32B2270/00—Resin or rubber layer containing a blend of at least two different 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

B32B2305/00—Condition, form or state of the layers or laminate

B32B2305/72—Cured, e.g. vulcanised, cross-linked

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

B32B2307/00—Properties of the layers or laminate

B32B2307/50—Properties of the layers or laminate having particular mechanical properties

B32B2307/514—Oriented

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

B32B2307/00—Properties of the layers or laminate

B32B2307/70—Other properties

B32B2307/724—Permeability to gases, adsorption

B32B2307/7242—Non-permeable

B32B2307/7244—Oxygen barrier

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

B32B2307/00—Properties of the layers or laminate

B32B2307/70—Other properties

B32B2307/732—Dimensional properties

B32B2307/734—Dimensional stability

B32B2307/736—Shrinkable

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

B32B2310/00—Treatment by energy or chemical effects

B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation

B32B2310/0875—Treatment by energy or chemical effects by wave energy or particle radiation using particle radiation

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

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

B32B2597/00—Tubular articles, e.g. hoses, pipes

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

C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H

C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers

C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment

C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms

C08J2427/08—Homopolymers or copolymers of vinylidene chloride

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]

Y10T428/24967—Absolute thicknesses specified

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

1392334 Laminated films W R GRACE & CO 28 March 1972 [30 March 1971] 14463/72 Headings B5B and B5N [Also in Division C3] A flexible laminate, suitable for use in heatshrink packaging comprises the following layers in the order given:- (i) a layer comprising an oriented copolymer of ethylene and vinyl acetate containing 5-20% by weight (preferably 8-12%) of units derived from vinyl acetate, the copolymer preferably being cross-linked; (ii) a barrier layer of low oxygen permeability such that the oxygen transmission rate of the laminate is no more than 70 c.c./sq.m./24 hrs./ atm. (measured at 73 F. and 0% relative humidity, according to A.S.T.M. Standard D1434; and (iii) a layer comprising (a) a copolymer of ethylene and vinyl acetate containing 5-20% by weight of units derived from vinyl acetate, or (b) a blend of isotactic polypropylene, atactic polypropylene or polybutene-1, or (c) a propylene, ester or amide polymer. Preferably the barrier layer is a vinylidene chloride copolymer with at least one other ethylenically unsaturated monomer, (e.g. vinyl chloride), the copolymer containing at least 50% by weight of vinylidene chloride derived units, and may contain 70-85% vinylidene chloridederived units and 30-15% of vinyl chloride derived units and the preferred vinylidene chloride polymer being a mixture of 5-40% (especially 5-15%) polymer obtained by suspension polymerization and 60-95% (especially 85-95%) polymer obtained by emulsion polymerization. The barrier layer may also contain 2-10%, especially 4-6%, of epoxy resin, and at least 5% of the vinylidene chloride polymer in the barrier layer may be of a liquid coating grade. Preferably, substantially all the vinylidene chloride polymer in the barrier layer is obtained by emulsion polymerization and 5- 40% thereof is liquid coating grade. In a preferred method, the laminate is made by melt extruding the ethylene/vinyl acetate copolymer layer (i) from die head 11 to form a tube, which is water quenched at cooling ring 12, collapsed and fed into irradiation vault 14 where it is irradiated with electrons from an iron core transformer accelerator 16, suitably at a dosage of 2-15 megarads. The tubing is then slightly inflated, but not stretched significantly, and passes through vacuum chamber 21 to a laminating or coating die 22. A second tubular film is melt-extruded therefrom and directly adhered to the tube 10 to form a two-ply tubular laminate 24. Die 22 (Figs. 2 and 3) is a circular crosshead die having an adaptor 26 attached thereto to provide an opening 27 for the tube 10. The path of the coating material 23 is shown by the arrows. Vacuum chamber 21 draws film 23 while still molten against tubing 10, to prevent bubble formation. The two ply film 24 passes to the laminating or coating die 32 while still hot, and a third layer is melt-extruded therefrom and directly adhered to the two ply tubular laminate 24 to form a three-ply tubular laminate 34, which is water quenched at 39, and wound up. Biaxial orientation is effected by passing previously wound-up film through hot water bath 44 as shown. After the orientation temperature has been attained, bubble 54 is blown in the film out of the water and the film is stretched in both the transverse and longitudinal directions in a preferred ratio of 1 : 1À5 to 1 : 6, especially 1 : 2 to 1 : 4.

GB1446372A
1971-03-30
1972-03-28
Laminate of thermoplastic polymers

Expired

GB1392334A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US12950171A

1971-03-30
1971-03-30

Publications (1)

Publication Number
Publication Date

GB1392334A
true

GB1392334A
(en)

1975-04-30

Family
ID=22440279
Family Applications (2)

Application Number
Title
Priority Date
Filing Date

GB1446372A
Expired

GB1392334A
(en)

1971-03-30
1972-03-28
Laminate of thermoplastic polymers

GB1365574A
Expired

GB1392335A
(en)

1971-03-30
1972-03-28
Composition of vinylidene chloride polymers

Family Applications After (1)

Application Number
Title
Priority Date
Filing Date

GB1365574A
Expired

GB1392335A
(en)

1971-03-30
1972-03-28
Composition of vinylidene chloride polymers

Country Status (19)

Country
Link

US
(1)

US3741253A
(en)

JP
(2)

JPS5843024B1
(en)

AR
(2)

AR193252A1
(en)

AU
(1)

AU469975B2
(en)

BE
(1)

BE781425A
(en)

BR
(2)

BR7201864D0
(en)

CA
(1)

CA975280A
(en)

CH
(2)

CH602849A5
(en)

DE
(2)

DE2265689C2
(en)

DK
(1)

DK147358C
(en)

ES
(3)

ES401295A1
(en)

FI
(1)

FI56975C
(en)

FR
(2)

FR2132212B1
(en)

GB
(2)

GB1392334A
(en)

IT
(1)

IT950888B
(en)

NL
(1)

NL180732C
(en)

NO
(2)

NO150503C
(en)

SE
(2)

SE403731B
(en)

ZA
(1)

ZA722139B
(en)

Cited By (3)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2117702A
(en)

1982-03-15
1983-10-19
Grace W R & Co
Quenched nylon multilayer casings

GB2189126A
(en)

1986-01-29
1987-10-21
Kureha Chemical Ind Co Ltd
Thermoplastic resin string or net meat fastening

US5698279A
(en)

1992-09-23
1997-12-16
Viskase Corporation
Heat shrinkable nylon food casing having a functionalized ethylenic polymer core layer

Families Citing this family (225)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3924051A
(en)

1970-09-08
1975-12-02
American Can Co
Oriented saran coextrudate

US3932693A
(en)

1970-10-19
1976-01-13
Continental Can Company, Inc.
Laminated packaging film having low vapor and gas permeability

US4057667A
(en)

1972-03-24
1977-11-08
American Can Company
Oriented saran coextrudate

US3853588A
(en)

1972-07-19
1974-12-10
Du Pont
Vinylidene chloride-topcoated, orthophosphate-coated polymeric objects

US3946905A
(en)

1974-03-21
1976-03-30
W. R. Grace & Co.
Collapsible plastic tubes

US4096946A
(en)

1974-09-16
1978-06-27
E.S. & A. Robinson (Canada) Ltd.
Laminate for use in packing oil

ES448091A1
(en)

1975-05-22
1977-07-01
Grace W R & Co
Film laminates having a reirradiated layer

US4064296A
(en)

1975-10-02
1977-12-20
W. R. Grace & Co.
Heat shrinkable multi-layer film of hydrolyzed ethylene vinyl acetate and a cross-linked olefin polymer

US4107380A
(en)

1976-11-12
1978-08-15
American Can Company
Non-blocking coating composition

US4136205A
(en)

1977-03-30
1979-01-23
W. R. Grace & Co.
Container and method for packaging meat articles

US4178220A
(en)

1977-04-04
1979-12-11
W. R. Grace & Co.
Uniformly irradiated polymer film

JPS5456672A
(en)

1977-10-14
1979-05-07
Toray Ind Inc
High polymer tube having modified inner surface

IT1088022B
(en)

1977-10-24
1985-06-04
Moplefan Spa

POLYOLEFINIC FILMS COATED WITH LOW ADHESION TO THE SEALING BARS

US4239799A
(en)

1977-12-09
1980-12-16
W. R. Grace & Co.
Blends of butyl rubber and polymers of vinylidene chloride

US4178401A
(en)

1978-01-09
1979-12-11
W. R. Grace & Co.
Packaging film comprising a blended self-welding layer

US4156749A
(en)

1978-01-18
1979-05-29
Union Carbide Corporation
Elastic multilayer packaging film containing plasticized polyvinyl chloride

US4207363A
(en)

1978-03-29
1980-06-10
Union Carbide Corporation
Flexible heat-shrinkable multilayer film for packaging primal meat

US4481669A
(en)

1978-06-26
1984-11-06
W. R. Grace & Co., Cryovac Div.
Multi-walled plastics bag

US4240993A
(en)

1978-08-07
1980-12-23
W. R. Grace & Co.
Multi-layer film containing a layer of crosslinked ethylene/vinyl alcohol copolymer

JPS55156058A
(en)

1979-04-26
1980-12-04
Kureha Chemical Ind Co Ltd
Highhdegree gas barrier property resin laminate

US4239111A
(en)

1979-05-21
1980-12-16
Laminating & Coating Corporation
Flexible pouch with cross-oriented puncture guard

US4267960A
(en)

1979-08-29
1981-05-19
American Can Company
Bag for vacuum packaging of meats or similar products

US4296156A
(en)

1979-12-26
1981-10-20
Union Carbide Corporation
Multilayer film including a polyurethane

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Dow Chemical Co

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patent/US3741253A/en
not_active
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1972

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CA
CA135,397A
patent/CA975280A/en
not_active
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1972-03-22
DE
DE2265689A
patent/DE2265689C2/en
not_active
Expired

1972-03-22
DE
DE2213850A
patent/DE2213850C2/en
not_active
Expired

1972-03-28
GB
GB1446372A
patent/GB1392334A/en
not_active
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1972-03-28
GB
GB1365574A
patent/GB1392335A/en
not_active
Expired

1972-03-29
ES
ES401295A
patent/ES401295A1/en
not_active
Expired

1972-03-29
CH
CH1635175A
patent/CH602849A5/xx
not_active
IP Right Cessation

1972-03-29
SE
SE416372A
patent/SE403731B/en
unknown

1972-03-29
FR
FR7211114A
patent/FR2132212B1/fr
not_active
Expired

1972-03-29
ES
ES401296A
patent/ES401296A1/en
not_active
Expired

1972-03-29
BE
BE781425A
patent/BE781425A/en
not_active
IP Right Cessation

1972-03-29
NO
NO110472A
patent/NO150503C/en
unknown

1972-03-29
BR
BR186472A
patent/BR7201864D0/en
unknown

1972-03-29
CH
CH468472A
patent/CH595256A5/xx
not_active
IP Right Cessation

1972-03-29
FI
FI879/72A
patent/FI56975C/en
active

1972-03-29
AR
AR24124372A
patent/AR193252A1/en
active

1972-03-29
ZA
ZA722139A
patent/ZA722139B/en
unknown

1972-03-29
BR
BR186272A
patent/BR7201862D0/en
unknown

1972-03-29
ES
ES401294A
patent/ES401294A1/en
not_active
Expired

1972-03-29
JP
JP3083772A
patent/JPS5843024B1/ja
active
Pending

1972-03-29
DK
DK158772A
patent/DK147358C/en
not_active
IP Right Cessation

1972-03-29
IT
IT2257372A
patent/IT950888B/en
active

1972-03-29
AR
AR24124472A
patent/AR193253A1/en
active

1972-03-30
AU
AU40653/72A
patent/AU469975B2/en
not_active
Expired

1972-03-30
NL
NL7204390A
patent/NL180732C/en
not_active
IP Right Cessation

1973

1973-12-28
NO
NO500473A
patent/NO138337C/en
unknown

1975

1975-08-11
SE
SE7509006A
patent/SE410195B/en
not_active
IP Right Cessation

1975-12-17
FR
FR7538723A
patent/FR2283172A1/en
active
Granted

1979

1979-03-16
JP
JP3005879A
patent/JPS54148046A/en
active
Granted

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1982-03-15
1983-10-19
Grace W R & Co
Quenched nylon multilayer casings

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1986-01-29
1987-10-21
Kureha Chemical Ind Co Ltd
Thermoplastic resin string or net meat fastening

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(en)

1986-01-29
1990-06-20
Kureha Chemical Ind Co Ltd
A method of forming processed meat

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1992-09-23
1997-12-16
Viskase Corporation
Heat shrinkable nylon food casing having a functionalized ethylenic polymer core layer

Also Published As

Publication number
Publication date

FI56975C
(en)

1980-05-12

SE403731B
(en)

1978-09-04

BR7201864D0
(en)

1973-06-07

SE410195B
(en)

1979-10-01

AR193252A1
(en)

1973-04-11

ZA722139B
(en)

1972-12-27

IT950888B
(en)

1973-06-20

FI56975B
(en)

1980-01-31

NO150503C
(en)

1984-10-31

US3741253A
(en)

1973-06-26

AU469975B2
(en)

1973-10-04

DE2265689C2
(en)

1986-05-22

NO150503B
(en)

1984-07-23

ES401294A1
(en)

1975-02-16

NL180732B
(en)

1986-11-17

CH595256A5
(en)

1978-02-15

NO138337B
(en)

1978-05-08

SE7509006A
(en)

1975-08-11

AU4065372A
(en)

1973-10-04

JPS54148046A
(en)

1979-11-19

NL180732C
(en)

1987-04-16

CH602849A5
(en)

1978-08-15

FR2283172B1
(en)

1979-03-30

FR2283172A1
(en)

1976-03-26

DE2213850A1
(en)

1972-10-12

JPS5843024B1
(en)

1983-09-24

AR193253A1
(en)

1973-04-11

FR2132212B1
(en)

1976-10-29

DK147358B
(en)

1984-07-02

DK147358C
(en)

1985-01-21

GB1392335A
(en)

1975-04-30

NL7204390A
(en)

1972-10-03

ES401296A1
(en)

1975-02-16

NO138337C
(en)

1978-08-16

CA975280A
(en)

1975-09-30

DE2213850C2
(en)

1982-05-27

BR7201862D0
(en)

1973-06-07

ES401295A1
(en)

1975-02-16

BE781425A
(en)

1972-07-17

JPS5547056B2
(en)

1980-11-27

FR2132212A1
(en)

1972-11-17

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