| 摘要 |
<p>PURPOSE:To maintain the characteristics of a base layer while easy release properties of a tear release layer is secured by constituting a multi-layer structure used for manufacturing a container and a cover in a specific layer structure. CONSTITUTION:A plastic resin surface layer A is formed through a thermoplastic resin intermediate layer B containing 0-70wt.% of a scaly inorganic filler on a base layer C of a multi-layer structure. In other words, it is essential that the same should have three layers, A, B and C, having interlaminar release strength of 0.3-2.0kg/15mm between A and B, and interlaminar release strength between B and C being 1.2 times or more the interlaminar strength between A and B. The surface layer A and the intermediate layer B are of easy release properties each other and the intermediate layer B and the base layer C are tough release properties each other by setting the interlaminar release strength. As a result, in case the multilayer structure is made into a container or a cover, the same is of easily unsealable properties, and statbilized sealability can be obtained.</p> |
