发明名称 |
THERMOPLASTIC MULTI LAYER PACKAGING FILM AND BAGS MADE THEREFROM |
摘要 |
<p>A thermoplastic multi-layer packaging film is disclosed comprising an outer polymer layer, a central layer acting as oxygen barrier and an inner heat sealing layer. The heat sealing layer comprises an ethylene/alpha-olefin copolymer wherein the alpha olefin has 4 to 8 carbon atoms per molecule and its content in the copolymer ranges of from x to y% by weight wherein x = 0.5nc + 8 and y = 1.25 nc + 15, wherein nc is the number of carbon atoms in the alpha-olefin. The copolymer of the heat sealing layer has a density of less than 920 kg m<3>.</p> |
申请公布号 |
AU582902(B2) |
申请公布日期 |
1989.04.13 |
申请号 |
AU19860063102 |
申请日期 |
1986.09.24 |
申请人 |
W.R. GRACE & CO. |
发明人 |
RICHARD STEPHEN WILLIAMS;CESARE QUACQUARELLA |
分类号 |
B32B7/02;B32B27/08;B32B27/28;B32B27/30;B32B27/32;B65D65/40;C09J123/08;(IPC1-7):B32B27/08;B65D30/08;B32B33/00 |
主分类号 |
B32B7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|