| 摘要 |
<p>PURPOSE:To obtain excellent drop impact strength, transparency, heat seal and flexibility as a three-layer laminate having an intermediate layer made by mixing an amorphous polyolefin containing specific composition and crystalline polypropylene at a specific ratio, and both outer surface layers each containing a polyolefin and a styrene thermostatic elastomer as main ingredient. CONSTITUTION:A laminate has at least three-layer structure of an intermediate layer and both outer layers. The intermediate layer is an A layer containing resin composition which contains 20-100wt.% of an amorphous polyolefin containing 50wt.% or more of propylene and/or butene ingredient content and 80-0wt.% of crystalline polypropylene. Both the outer layers each is a B layer containing resin composition which contains a polyolefin and a styrene thermostatic elastomer. Number of the layers is not limited, but at least three layers are contained. For example, it is formed like B/A/B or B/A/B/A/B layers. The A layer imparts flexibility, heat resistance and strength of nerve, and the B layer imparts a drop impact strength, flexibility and heat sealability.</p> |
