JPS57116626A - Prouction of polyurethane sheet - Google Patents

Prouction of polyurethane sheet

Info

Publication number
JPS57116626A
JPS57116626A JP56002653A JP265381A JPS57116626A JP S57116626 A JPS57116626 A JP S57116626A JP 56002653 A JP56002653 A JP 56002653A JP 265381 A JP265381 A JP 265381A JP S57116626 A JPS57116626 A JP S57116626A
Authority
JP
Japan
Prior art keywords
layer
polyurethane
sheet
roll
polyethylene
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
JP56002653A
Other languages
Japanese (ja)
Inventor
Takayoshi Hirano
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.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite 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
Application filed by Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP56002653A priority Critical patent/JPS57116626A/en
Publication of JPS57116626A publication Critical patent/JPS57116626A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the sticking of a sheet to a roll and the blocking between sheets by a method wherein a double-layer sheet is produced by coextrusion such that an olefin based resin layer is extruded on the side for contact with the first cooling roll and a thermoplastic polyurethane elastomer layer is extruded on the other side.
CONSTITUTION: When coextruding a polyurethane elastomer and polyethylene in two layers, the polyethylene layer 3 is provided on the side for contacting with the first cooling roll 2, whereby a molten polyurethane layer 4 can be cooled without contacting directly with the roll 2. The cooled double-layer sheeet is wound up around a paper tube as it is. Accordingly, there is no contact between parts of the polyurethane sheet and therefore no blocking can occur between sheets. When the polyurethane layer 4 is to be used, the polyethylene layer 3 is peeled off, which can be performed easily.
COPYRIGHT: (C)1982,JPO&Japio
JP56002653A 1981-01-13 1981-01-13 Prouction of polyurethane sheet Pending JPS57116626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56002653A JPS57116626A (en) 1981-01-13 1981-01-13 Prouction of polyurethane sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56002653A JPS57116626A (en) 1981-01-13 1981-01-13 Prouction of polyurethane sheet

Publications (1)

Publication Number Publication Date
JPS57116626A true JPS57116626A (en) 1982-07-20

Family

ID=11535306

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002653A Pending JPS57116626A (en) 1981-01-13 1981-01-13 Prouction of polyurethane sheet

Country Status (1)

Country Link
JP (1) JPS57116626A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60262618A (en) * 1984-06-11 1985-12-26 Mitsubishi Chem Ind Ltd Manufacture of film
EP1319491A1 (en) * 2001-12-14 2003-06-18 Bayer Ag Process of extrusion casting a transparent thermoplastic polyurethane film and its use
JP2013091223A (en) * 2011-10-25 2013-05-16 Okura Ind Co Ltd Laminate with thermoplastic polyurethane layer and method for manufacturing thin thermoplastic polyurethane film using the same
GB2504095A (en) * 2012-07-17 2014-01-22 Richard Walker Forming a plastic film

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60262618A (en) * 1984-06-11 1985-12-26 Mitsubishi Chem Ind Ltd Manufacture of film
EP1319491A1 (en) * 2001-12-14 2003-06-18 Bayer Ag Process of extrusion casting a transparent thermoplastic polyurethane film and its use
SG120084A1 (en) * 2001-12-14 2006-03-28 Bayer Ag Process for the production of a transparent flat film from thermoplastic polyurethane and use thereof
JP2013091223A (en) * 2011-10-25 2013-05-16 Okura Ind Co Ltd Laminate with thermoplastic polyurethane layer and method for manufacturing thin thermoplastic polyurethane film using the same
GB2504095A (en) * 2012-07-17 2014-01-22 Richard Walker Forming a plastic film

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