GB1382697A - Method for producing a thermoplastic synthetic polymer film - Google Patents

Method for producing a thermoplastic synthetic polymer film

Info

Publication number
GB1382697A
GB1382697A GB4442372A GB4442372A GB1382697A GB 1382697 A GB1382697 A GB 1382697A GB 4442372 A GB4442372 A GB 4442372A GB 4442372 A GB4442372 A GB 4442372A GB 1382697 A GB1382697 A GB 1382697A
Authority
GB
United Kingdom
Prior art keywords
film
whitening
blade
thermoplastic synthetic
weight
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
GB4442372A
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.)
Sanyo Kokusaku Pulp Co Ltd
Original Assignee
Sanyo Kokusaku Pulp 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 JP7754371A external-priority patent/JPS4945563B2/ja
Priority claimed from JP7754271A external-priority patent/JPS507091B2/ja
Priority claimed from JP7754471A external-priority patent/JPS507092B2/ja
Priority claimed from JP7754171A external-priority patent/JPS5040154B2/ja
Application filed by Sanyo Kokusaku Pulp Co Ltd filed Critical Sanyo Kokusaku Pulp Co Ltd
Publication of GB1382697A publication Critical patent/GB1382697A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1382697 Whitening films SANYO KOKUSAKU PULP CO Ltd 26 Sept 1972 [5 Oct 1971 (4)] 44423/72 Heading B5B Films composed of 100 parts by weight of thermoplastic synthetic crystalline resin and 5 to 300 parts by weight of an organic or inorganic filler are whitened by passage over a rigid blade, the film being bent over the blade at a constant deflection from its path of between 20 and 170 degrees. This whitening is conducted without positive heating or stretching the film. After whitening, however, the film is drawn monoaxially or biaxially at a ratio below the natural draw ratio of the film. The blade has a radius of curvature of 0À01 to 1À0 mm. The particle size of the filler is less than the thickness of the film and between 0À01 and 100 microns. In the examples the film is composed of high density polyethylene or isotactic polypropylene filled with CaCO 3 particles.
GB4442372A 1971-10-05 1972-09-26 Method for producing a thermoplastic synthetic polymer film Expired GB1382697A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7754371A JPS4945563B2 (en) 1971-10-05 1971-10-05
JP7754271A JPS507091B2 (en) 1971-10-05 1971-10-05
JP7754471A JPS507092B2 (en) 1971-10-05 1971-10-05
JP7754171A JPS5040154B2 (en) 1971-10-05 1971-10-05

Publications (1)

Publication Number Publication Date
GB1382697A true GB1382697A (en) 1975-02-05

Family

ID=27466081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4442372A Expired GB1382697A (en) 1971-10-05 1972-09-26 Method for producing a thermoplastic synthetic polymer film

Country Status (2)

Country Link
DE (1) DE2248503A1 (en)
GB (1) GB1382697A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1480479A (en) * 1973-06-28 1977-07-20 Nat Res Dev Process for the production of polymer materials

Also Published As

Publication number Publication date
DE2248503A1 (en) 1973-04-12

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Legal Events

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