发明名称 |
FOERFARANDE OCH ANORDNING FOER KYLANDE AV EN FRAON EN SLITSDYSA TILL ETT KYLSYSTEM STRAENGSPRUTAD SMAELTMEMBRAN. |
摘要 |
A molten film extruded from a slot die onto a take-off drum in a cooling system is first cooled on the circumferential surface of the take-off drum and by the ambient air, is subsequently passed into the water bath of a water trough in which the take-off drum is immersed, and finally is transferred from the water bath of the water trough into a post-cooling water bath, in which the film solidifies to an intermediate film having a desired final temperature of approximately 40 DEG C. When the film leaves the take-off drum, the partially solidified molten film has a mean temperature Tu of between 100 DEG C. and 120 DEG C. For optimization of the dwell time of the molten film in the cooling system and in the post-cooling water bath, the drum diameter D of the take-off drum and the length L of the post-cooling water bath are determined by a specific relationship. |
申请公布号 |
FI873677(A0) |
申请公布日期 |
1987.08.25 |
申请号 |
FI19870003677 |
申请日期 |
1987.08.25 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
PEIFFER, HERBERT;CRASS, GUENTHER;DIETZ, WOLFGANG |
分类号 |
B29C47/88;B29L7/00;(IPC1-7):B29C/ |
主分类号 |
B29C47/88 |
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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