| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin lid which improves the impact resistance of a resin lid effectively, and is made using a resin mold of a three-layer structure that can be obtained by utilizing a scrap or waste material resulting from injection molding or extrusion molding in manufacturing a resin mold. <P>SOLUTION: The resin lid 10 is placed on a top opening of a riser to cover the opening. The resin lid 10 is made of the resin mold of the three-layer structure consisting of an intermediate layer A, an inner layer B covering the inner and outer surfaces of the intermediate layer A, and an outer layer C. The intermediate layer A is made of a resin material containing a modifier and a reclaimed material obtained by crushing a resin scrap and waste material. The inner and outer layers are made of a virgin material not containing the modifier. <P>COPYRIGHT: (C)2007,JPO&INPIT |
