发明名称 |
PROCESSES FOR MAKING SHEET STRUCTURES HAVING IMPROVED COMPRESSION PERFORMANCE |
摘要 |
This invention relates to a process for preparing a sheet structure comprising the steps of: a) combining a plurality of plies comprising thermostable floc and at least 10 weight percent aramid fibrids, and the plies further having a void content between 25 and 95 volume percent and a moisture content of 1.5 to 7 weight percent; b) providing the combined plurality of plies to a heated press for thermal laminating the plies together, the heated press having a temperature of from 250 to 400 degrees C.; c) thermal laminating the plurality of plies in the heated press by compressing the plies at a pressure of at least 1.3 MPa while heating the plies at a temperature of from 250 to 400 degrees C. to form a sheet structure; and d) maintaining a constant pressure of at least 1.3 MPa on the sheet structure while cooling the structure to a temperature below 100 degrees C. |
申请公布号 |
EP2347046(A1) |
申请公布日期 |
2011.07.27 |
申请号 |
EP20090752970 |
申请日期 |
2009.11.10 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
LEVIT, MIKHAIL, R. |
分类号 |
D04H1/42;A61C13/30;D04H1/54;D04H1/58;D21H13/26;D21H27/30;D21J1/20 |
主分类号 |
D04H1/42 |
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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