| 发明名称 |
HEAT SHRINKABLE MULTI-LAYER FILM AND METHOD OF PRODUCING SAME |
| 摘要 |
<p>A heat shrinkable multi-layer packaging film having a layer of a hydrolyzed ethylene-vinyl acetate copolymer. Preferably, the film is formed by coextruding the hydrolyzed ethylene-vinyl acetate copolymer layer between two other polymeric layers, at least one of which is cross-linkable, and thereafter irradiating and orienting the multi-layer structure. The resulting film is heat shrinkable and has very low oxygen permeability.</p> |
| 申请公布号 |
CA1077667(A) |
申请公布日期 |
1980.05.20 |
| 申请号 |
CA19760250322 |
申请日期 |
1976.04.15 |
| 申请人 |
W.R. GRACE & CO. |
发明人 |
BORNSTEIN, NORMAN D.;D'ENTREMONT, DONALD J.;SUN, JOSEPH Z.;SCHIRMER, HENRY G.;WEINBERG, ALAN S. |
| 分类号 |
B29C55/00;B29B7/00;B29C47/00;B29C47/06;B29C47/26;B29C49/00;B29C55/02;B29C61/06;B32B27/28;B32B27/32;B65D65/38;B65D65/40;(IPC1-7):29D7/00;29D7/24;29D23/03 |
主分类号 |
B29C55/00 |
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