GB1386982A - High molecular weight polymeric sheet products - Google Patents

High molecular weight polymeric sheet products

Info

Publication number
GB1386982A
GB1386982A GB1018572A GB1018572A GB1386982A GB 1386982 A GB1386982 A GB 1386982A GB 1018572 A GB1018572 A GB 1018572A GB 1018572 A GB1018572 A GB 1018572A GB 1386982 A GB1386982 A GB 1386982A
Authority
GB
United Kingdom
Prior art keywords
fibres
polyolefin
molecular weight
march
films
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.)
Expired
Application number
GB1018572A
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.)
James River Corp of Nevada
Original Assignee
Crown Zellerbach 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 Crown Zellerbach Corp filed Critical Crown Zellerbach Corp
Publication of GB1386982A publication Critical patent/GB1386982A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/20—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres
    • D21H5/202—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene

Abstract

1386982 Polyolefine films CROWN ZELLERBACH CORP 3 March 1972 [3 March 1971] 10185/72 Heading B5B [Also in Division D2] Films and sheets containing polyolefins are made by heating at least a part of a web containing at least 10% by wt. of fibrous polyolefinic material to a temperature sufficient to cause the polyolefin fibres to coalesce at points of contact and then cooling it. The polyolefin is linear and has an average molecular weight of at least 200,000, measured from the viscosity, and a melt index of substantially zero. The fibres have a surface area of at least 1À0 m.<SP>2</SP>/g. The resulting sheet may be pressed during or after the heating step and may be oriented biaxially. Depending upon the degree of fusion and the content of polyolefin fibre in the web, the porosity and transparency may vary within wide limits. In the products the fibres may retain some of their identity even in the fused portions, although complete fusion to a film is contemplated. Examples illustrate the preparation of sheets from polyethylene, polypropylene and ethylene/ vinyl acetate copolymer.
GB1018572A 1971-03-03 1972-03-03 High molecular weight polymeric sheet products Expired GB1386982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12072571A 1971-03-03 1971-03-03

Publications (1)

Publication Number Publication Date
GB1386982A true GB1386982A (en) 1975-03-12

Family

ID=22392169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1018572A Expired GB1386982A (en) 1971-03-03 1972-03-03 High molecular weight polymeric sheet products

Country Status (7)

Country Link
BE (1) BE780177A (en)
CA (1) CA971707A (en)
DE (1) DE2208554A1 (en)
FR (1) FR2128750B1 (en)
GB (1) GB1386982A (en)
IT (1) IT948748B (en)
NL (1) NL7202769A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238280A (en) 1977-11-10 1980-12-09 The Wiggins Teape Group Limited Photographic support
US4387144A (en) 1977-05-11 1983-06-07 Tullis Russell & Company Limited Battery separator material

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084949A (en) * 1975-11-06 1978-04-18 The Dexter Corporation Surgical face mask filtering medium
EP0009300A1 (en) * 1978-09-18 1980-04-02 Gulf Oil Corporation Process for preparing a fibril-reinforced polyolefin film and olefin polymer film so prepared
GB8303600D0 (en) * 1983-02-09 1983-03-16 Wiggins Teape Group Ltd Blister sheet
JPH01318045A (en) * 1988-05-10 1989-12-22 E I Du Pont De Nemours & Co Composite material composed of wet molding mixture of glass fiber and thermoplastic fiber

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1099534A (en) * 1965-05-26 1968-01-17 Ici Ltd Fibrous, non-woven sheet materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387144A (en) 1977-05-11 1983-06-07 Tullis Russell & Company Limited Battery separator material
US4238280A (en) 1977-11-10 1980-12-09 The Wiggins Teape Group Limited Photographic support

Also Published As

Publication number Publication date
CA971707A (en) 1975-07-29
BE780177A (en) 1972-07-03
FR2128750A1 (en) 1972-10-20
NL7202769A (en) 1972-09-05
FR2128750B1 (en) 1976-01-16
DE2208554A1 (en) 1972-09-14
IT948748B (en) 1973-06-11

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees