| 摘要 |
<p>PURPOSE:To provide an excellent gas barrier and heat resisting characteristic, by providing inner, outer and central layers consisting of polyester resin and intermediate layers consisting of polyester and polyarylate resins. CONSTITUTION:Polyethylene terephthalate is hereinafter referred to as resin A and a mixture of the resinous compound of polyethylene terephthalate and polyarylate and the polyamide resin containing metaxylylene group as resin B. A multiple layer container is obtained by subjecting to a biaxial stretching blow molding a multiple layer parison having a five layer construction wherein the inner, outer and central layers consists of the resin A and wherein the two intermediate layers between the inner, out and central layers consist of the resin B. This permits the existence of polyethylene terephthalate in both the resins A and B, leading to the improvement of the layer-to-layer adhesiveness between these two resins and heat resisting and gas barrier effect.</p> |
