发明名称 |
Process for application of powder particles to filamentary materials |
摘要 |
This invention is a process for the uniform application of polymer powder particles to a filamentary material in a continuous manner to form a uniform composite prepreg material. A tow of the filamentary material is fed under carefully controlled tension into a spreading unit, where it is spread pneumatically into an even band. The spread filamentary tow is then coated with polymer particles from a fluidized bed, after which the coated filamentary tow is fused before take-up on a package for subsequent utilization. This process produces a composite prepreg uniformly without imposing severe stress on the filamentary material, and without requiring long, high temperature residence times for the polymer.
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申请公布号 |
US5057338(A) |
申请公布日期 |
1991.10.15 |
申请号 |
US19900524109 |
申请日期 |
1990.05.16 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
BAUCOM, ROBERT M.;SNOHA, JOHN J.;MARCHELLO, JOSEPH M. |
分类号 |
B05C19/02;B29B15/10;D06M23/08 |
主分类号 |
B05C19/02 |
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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