发明名称 |
HEISSSCHRUMPFBARER MEHRSCHICHTFILM |
摘要 |
<p>A polyamide resin-based heat-shrinkable multilayer film is caused to satisfy various properties required of a packaging material, especially a food packaging material, at high levels, and particularly exhibit a highest level of heat-shrinkability. The multilayer film comprises at least three layers including an outer surface layer (a) which comprises a polyester resin or a polyolefin resin; an intermediate layer (b) which comprises a mixture of 85 - 60 wt. % of an aliphatic polyamide resin, and 15 - 40 wt. % of an aromatic copolyamide resin which is a copolymer of aliphatic diamine/isophthalic acid and aliphatic diamine/terephthalic acid, and an inner surface layer (c) which essentially comprises a copolymer of ethylene and alpha -olefin having a density below 0.915. The heat-shrinkable multilayer film has been biaxially stretched and then heat-treated to have hot-water shrinkabilities at 80 DEG C of at least 30 % in each of longitudinal/transverse directions and at least 35 % in at least one of longitudinal/transverse directions. <IMAGE></p> |
申请公布号 |
AT258853(T) |
申请公布日期 |
2004.02.15 |
申请号 |
AT20010203636T |
申请日期 |
2001.09.21 |
申请人 |
KUREHA KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
UEYAMA, TAKAHISA, KUREHA KAGAKU KOGYO;KAMITAMARI, TAMARI-MURA;ITOH, TADAYOSHI, KUREHA;KAMITAMARI, TAMARI-MURA |
分类号 |
B29C55/28;B32B27/08;B32B27/34;B32B27/36;(IPC1-7):B32B27/08 |
主分类号 |
B29C55/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|