| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a multilayer hollow container of a gas barrier property which is suitable as a container for materials requiring a treating process under a high temperature and high humidity state by a method wherein an instrument wall of a structure in which a polyglycolic acid layer having a specific chemical structure is combined with a thermoplastic resin layer, is provided. SOLUTION: A multilayer hollow container of a gas barrier property having a multilayer instrument wall structure is provided wherein a thermoplastic resin layer is laminated on at least one side of a layer formed of polyglycolic acid containing 60wt.% or over repetitive unit expressed by the formula. Thermoplastic resin and as occasion demands, an adhesive are respectively melted by heating with an extruder, which is made to flow into a multilayer parison molding die to be joined, a multilayer tubular parison is extruded, which is pinched with split molds while that is solidified, and one end of the parison is pinched. Besides, air is blown in to blow to a mold wall, which is cooled and molded. The thermoplastic resin is selected from polyolefin, polyester, polystyrene, etc.</p> |
