发明名称 |
Apparatus and high speed process for making highly stretched film |
摘要 |
An apparatus and high speed process for heating and stretching a film (40) having a bridle mechanism comprising a first heated roll (15) and a second heated roll (16). The film is stretched as the film is transferred from the first heated roll (15) to the second heated roll (16) which rotates at a speed greater than the speed at which the first heated roll rotates. The film is fed into the bridle mechanism at a rate of about 1,500 fpm to about 2,500 fpm wherein it is stretched to a length that is up to about 450% greater than its initial, pre-stretched length. The increased contact between the large diameter heated rolls and the film and the short draw gap between the two heated rolls result in a highly stretched film having minimal neck-in. <IMAGE> |
申请公布号 |
EP1095758(A3) |
申请公布日期 |
2002.04.17 |
申请号 |
EP20000118158 |
申请日期 |
2000.08.29 |
申请人 |
ILLINOIS TOOL WORKS INC. |
发明人 |
WOJCIK, JOHN P.;MEHTA, DEEPAK H.;VAN ERDEN, DONALD L. |
分类号 |
B29C55/06;(IPC1-7):B29C55/06 |
主分类号 |
B29C55/06 |
代理机构 |
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代理人 |
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地址 |
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