发明名称 |
METHOD OF ELIMINATING DEFECTS WHILE EXTRUSION COATING FILM USING SPEED CONTROL OF THE NIP ROLL |
摘要 |
<p>It has now been determined that an internal optical defect can be eliminated by controlling the relative speed mismatch between the resilient roll and the casting roll in a film extrusion coating process. In particular, slowing down the surface speed of the resilient roll relative to the casting roll when coating a biaxially orientated film was found to remove the optical defect. Conversely, speeding up the surface speed of the resilient roll relative to the casting roll when coating a uniaxially orientated film was found to remove the optical defect.</p> |
申请公布号 |
WO2011149468(A1) |
申请公布日期 |
2011.12.01 |
申请号 |
WO2010US36412 |
申请日期 |
2010.05.27 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY;BAY, RANDY S.;PETT, TODD G.;HANSEN, BRENT R. |
发明人 |
BAY, RANDY S.;PETT, TODD G.;HANSEN, BRENT R. |
分类号 |
B29C47/92;B29C41/26;B29C41/52;B29C47/02 |
主分类号 |
B29C47/92 |
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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