| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet-like molded article of a heat storage thermoplastic resin, which has good heat storage properties and maintains the heat storage properties even under severe service conditions. SOLUTION: A protective layer is provided on at least one surface side of a base material resin layer that incorporates a heat storage material, thereby making a structure hard for air (oxygen) to penetrate into the base material resin layer. At the same time, even if the heat storage material oozes outside of the base material resin layer, the oozed heat storage material is pooled between the protective layer and the base material resin layer and prevented from a direct contact with the air. By the above a structure hard to cause the oxidative degradation of the heat storage material is realized, and thus is formed the sheet-like molded article of the heat storage thermoplastic resin capable of keeping the heat storage properties for a long period of time. COPYRIGHT: (C)2009,JPO&INPIT
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