GB1345748A - Surface-patterned surface-activated polymer film - Google Patents

Surface-patterned surface-activated polymer film

Info

Publication number
GB1345748A
GB1345748A GB4279371A GB4279371A GB1345748A GB 1345748 A GB1345748 A GB 1345748A GB 4279371 A GB4279371 A GB 4279371A GB 4279371 A GB4279371 A GB 4279371A GB 1345748 A GB1345748 A GB 1345748A
Authority
GB
United Kingdom
Prior art keywords
film
polymer film
treatment
polymer
ribbed
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
GB4279371A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours 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.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1345748A publication Critical patent/GB1345748A/en
Expired legal-status Critical Current

Links

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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
    • 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
    • C08J2327/00—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
    • C08J2327/02—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
    • C08J2327/12—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 fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene

Abstract

1345748 Polymer film E I DU PONT DE NEMOURS & CO 14 Sept 1971 [9 Oct 1970] 42793/71 Heading B5B [Also in Division H1] A polymer film suitable for use in electrical insulation systems comprises a film having at least one surface which has been activated by chemical etching or electrostatic discharge treatment and at least one surface which has a pattern in the form of a plurality of ribs or grooves each of which extends generally transverse of the film from at least one edge thereof. The surface patterning of the film may be formed during the film casting or moulding process or may be formed by embossing a preformed flat film. The surface activation treatment may be with a corona discharge or by etching the surface of the film with, for example, an alkali metal in liquid ammonia or sodium naphthalene in dimethylglycol ether. Suitable polymers are polyolefins, polycarbonates and fluorocarbon polymers. When used in tape form as a wrapping for primary electrical insulation of an electrical cable the polymer preferably has a dielectric constant of less than 4À0 and a dissipation factor of no greater than 0À002. The surface pattern permits the penetration of oil between layers of the tape to displace all air bubbles and the surface activation increases the affinity of the dielectric oil and polymer film for one another to give improved performance of the insulator. Examples relate to the treatment of ribbed tetrafluoroethylene / hexafluoropropylene copolymer, polyethylene, polycarbonate and polyethylene terephthalate tapes to a corona discharge and to the chemical etching of a ribbed PTFE film with a 2% THF solution of sodium 1-methylnaphthalene at room temperature.
GB4279371A 1970-10-09 1971-09-14 Surface-patterned surface-activated polymer film Expired GB1345748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7963170A 1970-10-09 1970-10-09

Publications (1)

Publication Number Publication Date
GB1345748A true GB1345748A (en) 1974-02-06

Family

ID=22151775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4279371A Expired GB1345748A (en) 1970-10-09 1971-09-14 Surface-patterned surface-activated polymer film

Country Status (5)

Country Link
DE (1) DE2149888A1 (en)
FR (1) FR2110328A1 (en)
GB (1) GB1345748A (en)
IT (1) IT939076B (en)
NL (1) NL7113859A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502263A (en) * 1982-12-24 1985-03-05 Hoechst Aktiengesellschaft Sealable polyolefinic multilayer film
WO2005082983A1 (en) * 2004-02-23 2005-09-09 3M Innovative Properties Company Etched polycarbonate films
CN114133613A (en) * 2021-12-06 2022-03-04 中国电子科技集团公司第四十六研究所 Surface activation treatment method of PTFE (polytetrafluoroethylene) base material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2182828A1 (en) * 1972-01-31 1973-12-14 Du Pont Oriented perfluorinated copolymers - from tetrafluoroethylene/perfluoro-(alkyloxide and vinyl)
DE2942298C2 (en) * 1979-10-19 1985-06-13 Hoechst Ag, 6230 Frankfurt Process for the production of a rough polypropylene electrical insulation film
US5352108A (en) * 1991-10-18 1994-10-04 Norito Sudo Porous film and porous film manufacturing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502263A (en) * 1982-12-24 1985-03-05 Hoechst Aktiengesellschaft Sealable polyolefinic multilayer film
WO2005082983A1 (en) * 2004-02-23 2005-09-09 3M Innovative Properties Company Etched polycarbonate films
CN114133613A (en) * 2021-12-06 2022-03-04 中国电子科技集团公司第四十六研究所 Surface activation treatment method of PTFE (polytetrafluoroethylene) base material

Also Published As

Publication number Publication date
DE2149888A1 (en) 1972-04-13
FR2110328A1 (en) 1972-06-02
IT939076B (en) 1973-02-10
NL7113859A (en) 1972-04-11

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Legal Events

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