JPS571718A - Manufacture of heat shrinkable corrosion-resistant sheet - Google Patents

Manufacture of heat shrinkable corrosion-resistant sheet

Info

Publication number
JPS571718A
JPS571718A JP7453680A JP7453680A JPS571718A JP S571718 A JPS571718 A JP S571718A JP 7453680 A JP7453680 A JP 7453680A JP 7453680 A JP7453680 A JP 7453680A JP S571718 A JPS571718 A JP S571718A
Authority
JP
Japan
Prior art keywords
polyolefin
sheet
manufacture
corrosion
orientated
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.)
Pending
Application number
JP7453680A
Other languages
Japanese (ja)
Inventor
Masatsugu Ishibashi
Hideki Kameda
Fumio Akaishi
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.)
Fujikura Ltd
Original Assignee
Fujikura Ltd
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 Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP7453680A priority Critical patent/JPS571718A/en
Publication of JPS571718A publication Critical patent/JPS571718A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • B29C61/0616—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms layered or partially layered preforms, e.g. preforms with layers of adhesive or sealing compositions

Abstract

PURPOSE:To obtain the captioned sheet generating no flaw even at a high temperature and suitable for preventing a metallic pipe or the like from corrosion by a method wherein the sheet is formed by extruding simultaneously two layers of polyolefin and adhesive polyolefin and is orientated after simultaneous crosslinking. CONSTITUTION:Polyolefin such as polyethylene, polypropylene, ethylene copolymer or the like and the adhesive polyolefin made by denaturating a copolymer of ethylene and propylene or 1-butene with maleic acid in the presence of a free-radical initiator are formed into a sheetlike article by a double layer extrusion and this double layer sheet is crosslinked simultaneously by a chemical crosslinking, an electronic rays irradiation or the like, thereafter, is orientated and cooled to afford a shrinkability.
JP7453680A 1980-06-03 1980-06-03 Manufacture of heat shrinkable corrosion-resistant sheet Pending JPS571718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7453680A JPS571718A (en) 1980-06-03 1980-06-03 Manufacture of heat shrinkable corrosion-resistant sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7453680A JPS571718A (en) 1980-06-03 1980-06-03 Manufacture of heat shrinkable corrosion-resistant sheet

Publications (1)

Publication Number Publication Date
JPS571718A true JPS571718A (en) 1982-01-06

Family

ID=13550095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7453680A Pending JPS571718A (en) 1980-06-03 1980-06-03 Manufacture of heat shrinkable corrosion-resistant sheet

Country Status (1)

Country Link
JP (1) JPS571718A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693940A (en) * 1983-02-14 1987-09-15 Raychem Corporation Laminate and method of preparing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693940A (en) * 1983-02-14 1987-09-15 Raychem Corporation Laminate and method of preparing same

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