| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain cylindrical multilayer moldings with a high functionality such as a gas barrier property or the like by a monoblock molding though the cylindrical multilayer moldings has a complex shape with a protuberance such as a flange or the like. <P>SOLUTION: The cylindrical multilayer moldings without a defective part as a whole in the intermediate resin layer is produced at a sight to the thickness direction of the cylindrical part, by forming a molten resin block 13 which is formed by forming an intermediate layer as two layers leaving a space, arranging a first intermediate resin layer 11 towards the side of a projection molding section of the mold, and arranging a second intermediate resin layer 12 towards the side of more inside periphery of the cylinder than the first intermediate resin layer 11 so as to cover at least at a starting point of the projection molding section at a sight from the thickness direction of the cylindrical part and by feeding the molten resin block into the mold, by compression molding, and by making them over lap each other in the cylindrical part. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
