发明名称 |
Method of producing biaxially oriented film of thermoplastic resin and apparatus therefor. |
摘要 |
<p>A method of biaxially stretching a tubular thermoplastic resin to provide a film, wherein air is blown against a starting point for heating and stretching the tube, from the upstream side of the starting point, at a predetermined angle relative to the feeding direction of the film. An apparatus for achieving this method includes: two pairs of nip rolls being different in circumferential speed between the pairs; a heating-stretching section interposed between the pairs of nip rolls, for heating the tube to a temperature where the tube can be stretched; and an air ring device for blowing air in the feeding direction of the film.</p> |
申请公布号 |
EP0189922(A2) |
申请公布日期 |
1986.08.06 |
申请号 |
EP19860101211 |
申请日期 |
1986.01.30 |
申请人 |
IDEMITSU PETROCHEMICAL COMPANY LIMITED |
发明人 |
TAKASHIGE, MASAO;TAKEICHI, HIDENOBU;HAYASHI, TAKEO |
分类号 |
B29C47/00;B29C55/28;(IPC1-7):B29C55/28;B29D7/01 |
主分类号 |
B29C47/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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