发明名称 |
Dry powder process for preparing uni-tape prepreg from polymer powder coated filamentary towpregs |
摘要 |
A process for preparing uni-tape prepreg from polymer powder coated filamentary towpregs is provided. A plurality of polymer powder coated filamentary towpregs are provided. The towpregs are collimated so that each towpreg is parallel. A material is applied to each side of the towpreg to form a sandwich. The sandwich is heated to a temperature wherein the polymer flows and intimately contacts the filaments and pressure is repeatedly applied perpendicularly to the sandwich with a longitudinal oscillating action wherein the filaments move apart and the polymer wets the filaments forming a uni-tape prepreg. The uni-tape prepreg is subsequently cooled.
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申请公布号 |
US5618367(A) |
申请公布日期 |
1997.04.08 |
申请号 |
US19950425005 |
申请日期 |
1995.04.10 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
WILKINSON, STEVEN P.;JOHNSTON, NORMAN J.;MARCHELLO, JOSEPH M. |
分类号 |
B29B15/10;B29C70/50;B32B5/28;(IPC1-7):B32B31/16;B32B31/00 |
主分类号 |
B29B15/10 |
代理机构 |
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主权项 |
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地址 |
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