| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mold capable of producing a molded product holding more excellent flatness and transparency than heretofore by re-examining the structure of the mold used for the molding and improving a material to be used or a processing method in the sheet like olefine based resin vacuum molding by which it is difficult conventionally to obtain the mold product holding the flatness and the transparency in a flat part. Ž<P>SOLUTION: The mold capable of producing the remarkably improved molded product compared to the conventional one is manufactured by replacing a material of a surface part forming a cavity by the porous material having excellent air permeability to produce the mold. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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