发明名称 |
Method and apparatus for the production of high tenacity polyolefin sheet |
摘要 |
A process for the production of virtually full density polyolefin suitable for further processing by drawing to form a high tenacity, highly oriented polyolefin sheet comprising: a) feeding a metered amount of polyolefin powder into the nip between two heated calendar rolls initially set at a gap smaller than the size of the smallest polyolefin powder particle and at a temperature above the melting point of the powder; b) rolling the powder through the nip under these conditions until a coherent sheet of polyolefin is produced: and c) once a coherent sheet of polyolefin exits the nip lowering the temperature in the nip to a temperature below the melting point of the polyolefin powder and increasing the gap to a desired level above the thickness of the largest powder particle. Apparatus for the performance of such a process is also described.
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申请公布号 |
US7854870(B2) |
申请公布日期 |
2010.12.21 |
申请号 |
US20080080197 |
申请日期 |
2008.04.01 |
申请人 |
BAE SYSTEMS TENSY LON H.P.M., INC. |
发明人 |
HARDING KENNETH C.;WEEDON GENE C. |
分类号 |
B29C55/02 |
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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