GB1326262A - Biaxially stretched films of crystalline vinylidene chloride copolymer - Google Patents

Biaxially stretched films of crystalline vinylidene chloride copolymer

Info

Publication number
GB1326262A
GB1326262A GB5037470A GB5037470A GB1326262A GB 1326262 A GB1326262 A GB 1326262A GB 5037470 A GB5037470 A GB 5037470A GB 5037470 A GB5037470 A GB 5037470A GB 1326262 A GB1326262 A GB 1326262A
Authority
GB
United Kingdom
Prior art keywords
film
chloride copolymer
vinylidene chloride
weight
parts
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
GB5037470A
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.)
Kureha Corp
Original Assignee
Kureha 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 Kureha Corp filed Critical Kureha Corp
Publication of GB1326262A publication Critical patent/GB1326262A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1326262 Vinylidene chloride copolymer films KUREHA KAGAKU KOGYO KK 23 Oct 1970 [24 Oct 1969] 50374/70 Heading B5B A process for the production of biaxially oriented tubular films of a crystalline vinylidene chloride copolymer comprises melt extruding a tubular film comprising 100 parts by weight of a vinylidene chloride/vinyl chloride copolymer, up to 20 parts by weight of a plasticizer (e.g. dibutyl sebacate) and up to 10 parts by weight stabilizer (e.g. epoxidized soybean oil), strongly heating the film to a temperature between 100‹ and 300‹ C. for 1 to 15 seconds, immediately biaxially stretching the film at the heated portion by inflation moulding under conditions which impart to the film a mimimum heat shrinkage stress of 100 (kg/cm<SP>2</SP>)<SP>2</SP> and maximum creep compliance of 60 x 10<SP>-4</SP> (%/kg/cm<SP>2</SP>)<SP>2</SP> and thereafter heat setting the thus oriented film, preferably at a temperature of 120‹-150‹ C. In an example the copolymer vinylidene used has a vinyl chloride copolymer ratio of 80 : 20 by weight.
GB5037470A 1969-10-24 1970-10-23 Biaxially stretched films of crystalline vinylidene chloride copolymer Expired GB1326262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8464769A JPS5019594B1 (en) 1969-10-24 1969-10-24

Publications (1)

Publication Number Publication Date
GB1326262A true GB1326262A (en) 1973-08-08

Family

ID=13836475

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5037470A Expired GB1326262A (en) 1969-10-24 1970-10-23 Biaxially stretched films of crystalline vinylidene chloride copolymer

Country Status (4)

Country Link
JP (1) JPS5019594B1 (en)
DE (1) DE2052076A1 (en)
GB (1) GB1326262A (en)
NL (1) NL7015470A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101890U (en) * 1977-01-22 1978-08-17
JP4889478B2 (en) * 2006-12-27 2012-03-07 旭化成ケミカルズ株式会社 Method for heat treatment of vinylidene chloride-methyl acrylate copolymer biaxially stretched film

Also Published As

Publication number Publication date
DE2052076A1 (en) 1971-05-06
JPS5019594B1 (en) 1975-07-08
NL7015470A (en) 1971-04-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee