发明名称 |
Process for making puncture resistant, heat-shrinkable films containing very low density polyethylene |
摘要 |
Method of manufacturing a heat shrinkable biaxially oriented thermoplastic film by extruding a primary tube including very low density polyethylene (VLDPE), heating the primary tube and biaxially stretching the heated primary tube using a double bubble method to form a tube which is heat shrinkable from about 30% to about 50% in at least one of the transverse and machine directions.
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申请公布号 |
US4976898(A) |
申请公布日期 |
1990.12.11 |
申请号 |
US19890384589 |
申请日期 |
1989.07.25 |
申请人 |
VISKASE CORPORATION |
发明人 |
LUSTIG, STANLEY;MACK, NANCY M.;SCHUETZ, JEFFREY M.;VICIK, STEPHEN J. |
分类号 |
B32B27/08;B65D65/40 |
主分类号 |
B32B27/08 |
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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