| 摘要 |
PURPOSE:To impart excellent sequential biaxial stretching aptitude and to make transparency, mechanical strength, gas barrier properties and printability excellent by laminating a sealant film consisting of low density polyethylene, an ethylene/vinyl acetate copolymer and an ionomer resin. CONSTITUTION:A film containing a polyamide resin layer A, a saponified ethylene/vinyl acetate copolymer resin layer B and an modified polyolefin adhesive resin layer C is formed. The polyamide resin layer A is set to a layer composed of a blend of nonrcrystalline nylon and other nylon. In the layer constitution of this nonshrinkable multilayer stretched film, two or more kinds of combinations such as A-B-A, A-C-B-C-A or the like become possible. The saponified ethylene/vinyl acetate copolymer resin layer B to be used is characterized by that softening temp. is 150-175 deg.C, ethylene content is 25-75mo1% and the saponification degree to vinyl acetate in the copolymer is 90% or more. The modified polyolefin adhesive resin layer C is composed of an acid modified polyolefinic resin obtained by chemically bonding maleic anhydride. |
