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. |
申请公布号 |
EP2265427(A1) |
申请公布日期 |
2010.12.29 |
申请号 |
EP20090728649 |
申请日期 |
2009.04.01 |
申请人 |
BAE SYSTEMS TENSYLON HIGH PERFORMANCE MATERIALS, INC. |
发明人 |
HARDING, KENNETH C.;WEEDON, GENE, C. |
分类号 |
B29C43/22;B29C55/18;B29C67/04;B29C71/02;B29K23/00 |
主分类号 |
B29C43/22 |
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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