发明名称 |
High barrier low profile forming web |
摘要 |
A forming web comprises a first extruded polymeric film oriented to substantially the same extent in both the longitudinal and machine directions. Alternately, a high molecular weight crystalline polyolefin is blown at least to a blow-up ratio sufficient to orient the film to substantially the same extent in both the longitudinal and machine directions. A second extruded polymeric film including a layer of an oxygen barrier polymeric material may be laminated to the first film.
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申请公布号 |
US4940634(A) |
申请公布日期 |
1990.07.10 |
申请号 |
US19860842530 |
申请日期 |
1986.03.21 |
申请人 |
W. R. GRACE & CO.-CONN. |
发明人 |
MUELLER, WALTER B.;SCHIRMER, HENRY G. |
分类号 |
B32B27/16 |
主分类号 |
B32B27/16 |
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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