| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated body used for a packing bag which obtains an appropriate slidability and a stable low temperature sealability in the case of manufacturing the packing body and filling contents. SOLUTION: In the laminated body, which is composed of three layers formed by laminating a layer A, a layer B and a layer C, in this order, using an ethylene-αolefine copolymer polymerized by using a single site-based catalyst, the densities of the layer A, B and C are 0.890-0.920, 0.925-0.935 and 0.890-0.920, respectively, and the density gradient is (density of the layer B)>(density of the layer A)>(density of the layer C). The laminated body is used for the packing bag. COPYRIGHT: (C)2009,JPO&INPIT |
