JPS57116626A - Prouction of polyurethane sheet - Google Patents
Prouction of polyurethane sheetInfo
- 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
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
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)
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 |
-
1981
- 1981-01-13 JP JP56002653A patent/JPS57116626A/en active Pending
Cited By (5)
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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