GB1453604A - Method and apparatus for stretching a thermo-softening high molecular film - Google Patents

Method and apparatus for stretching a thermo-softening high molecular film

Info

Publication number
GB1453604A
GB1453604A GB5615073A GB5615073A GB1453604A GB 1453604 A GB1453604 A GB 1453604A GB 5615073 A GB5615073 A GB 5615073A GB 5615073 A GB5615073 A GB 5615073A GB 1453604 A GB1453604 A GB 1453604A
Authority
GB
United Kingdom
Prior art keywords
film
belts
high molecular
thermo
dec
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
GB5615073A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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
Priority claimed from JP12274172A external-priority patent/JPS557372B2/ja
Priority claimed from JP12088473A external-priority patent/JPS5071773A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1453604A publication Critical patent/GB1453604A/en
Expired 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/18—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping 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)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

1453604 Stretching films MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 4 Dec 1973 [6 Dec 1972 26 Oct 1973] 56150/73 Heading B5B Thermo softening high molecular film, e.g. of polyolefin, polyamide, polyester, polyether, polyvinylidene fluoride, PVA or PVC may be drawn by moving the film in a longitudinal direction while maintaining the film at a temperature below its softening temperature and exerting on the surfaces of the film a force tending to expand the film while at the same time exerting a compressive force on the film perpendicular to the plane of the film through rubber like resilient members. A film 1 of thickness a and width c is stretched to thickness b and width d by passing 1 through the nip formed between endless belts 2 and 3 made of rubber or other resilient material. The belts pass over metal rollers 4 and 5 adapted to apply pressure to 1 through the belts while driving the same. 6 and 7 are auxiliary rolls. The film may be fed from a roll (15) and further drawn by another draw out roll (16) after pressure drawing. The film may be passed through a number of pressure rolling devices in succession.
GB5615073A 1972-12-06 1973-12-04 Method and apparatus for stretching a thermo-softening high molecular film Expired GB1453604A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12274172A JPS557372B2 (en) 1972-12-06 1972-12-06
JP12088473A JPS5071773A (en) 1973-10-26 1973-10-26

Publications (1)

Publication Number Publication Date
GB1453604A true GB1453604A (en) 1976-10-27

Family

ID=26458382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5615073A Expired GB1453604A (en) 1972-12-06 1973-12-04 Method and apparatus for stretching a thermo-softening high molecular film

Country Status (3)

Country Link
CA (1) CA1019515A (en)
FR (1) FR2209655B1 (en)
GB (1) GB1453604A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164603A (en) * 1984-09-24 1986-03-26 Nat Res Dev Oriented polymer films
CN102241142A (en) * 2011-05-16 2011-11-16 中材科技股份有限公司 Method for producing lithium battery diaphragm and transverse stretcher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164603A (en) * 1984-09-24 1986-03-26 Nat Res Dev Oriented polymer films
CN102241142A (en) * 2011-05-16 2011-11-16 中材科技股份有限公司 Method for producing lithium battery diaphragm and transverse stretcher

Also Published As

Publication number Publication date
DE2360556B2 (en) 1976-12-02
FR2209655B1 (en) 1976-10-08
FR2209655A1 (en) 1974-07-05
CA1019515A (en) 1977-10-25
DE2360556A1 (en) 1974-06-27

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19931203