发明名称 |
WERKWIJZE VOOR HET VERVAARDIGEN VAN EEN POLYETHEENTEREFTALAATFILM. |
摘要 |
A process for improving the quality of a thermoplastic, preferably a polyethylene terephthalate film. Slit rolls of polyethylene terephthalate film are exposed to an environment maintained at a temperature in the range of between about 15 DEG C. and 35 DEG C. above the temperature at which the rolls were wound for a period of at least 24 hours. This process significantly decreases the formation of surface defects that otherwise form on the surface of the film in the rolls not so treated. |
申请公布号 |
NL7411380(A) |
申请公布日期 |
1975.03.04 |
申请号 |
NL19740011380 |
申请日期 |
1974.08.27 |
申请人 |
CELANESE CORPORATION TE NEW YORK. |
发明人 |
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分类号 |
B29C71/00;B29C47/88;B29C53/32;B29C55/00;B29C61/00;B29C71/02;B29D7/00;B29D7/01;C08L67/02;G11B5/73 |
主分类号 |
B29C71/00 |
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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