| 发明名称 |
Process for producing high modulus film. |
| 摘要 |
<p>The invention provides a two-step process for increasing the modulus of a film in a desired direction, by drawing the film at between about 10 DEG C above Tg and 40 DEG C below Tm at a draw ratio of between 1.05 and 5.5 and then drawing the film in the same direction at between about 5 DEG C and 35 DEG C below Tm at a draw ratio of between about 1.05 and 2.5.</p> |
| 申请公布号 |
EP0279611(A2) |
申请公布日期 |
1988.08.24 |
| 申请号 |
EP19880301233 |
申请日期 |
1988.02.15 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
LI, HIN-MOÂC/O MINNESOTA MINING AND;ROSKA, FRED J.ÂC/O MINNESOTA MINING AND |
| 分类号 |
B29C55/02;B29C55/00;B29C55/14;B29K67/00;B29L7/00 |
主分类号 |
B29C55/02 |
| 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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