发明名称 |
Method for shaping tubular films in downward and wet manner |
摘要 |
A method for shaping a tubular film in a downward and wet manner is provided in which an extruded tubular film is coagulated in contact with a coagulation liquid which flows down along the inside surface of a cylindrical composite perforated wall composed of a cylindrical perforated wall and cylindrically piled up circular rings of coiled wire provided in a single layer and in contact with the inner surface of said cylindrical perforated wall, provided in a negative pressure chamber connected to the lower part of a coagulation liquid-supplying pool; in this coagulation, coagulation liquid is fully utilized by mixing with a reflux coagulation liquid formed when a part of coagulation liquid once flows out through said wall and is collected in a plurality of coagulation liquid-collecting weirs provided around the outer surface of said wall, and then flows again through said wall to the inside thereof; and said film is drawn downward while being supported on the inner surface of said wall by friction due to suction under negative pressure and taken up by pinch rollers.
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申请公布号 |
US3950467(A) |
申请公布日期 |
1976.04.13 |
申请号 |
US19740440099 |
申请日期 |
1974.02.06 |
申请人 |
POLYMER PROCESSING RESEARCH INSTITUTE LTD. |
发明人 |
YAZAWA, MASAHIDE;KURIHARA, KAZUHIKO;NARIKAWA, KENICHI;YAZAWA, HIROSI |
分类号 |
B29C49/00;B29C47/00;B29C47/90;B29C55/00;B29C55/28;(IPC1-7):B29D7/20 |
主分类号 |
B29C49/00 |
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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