| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem that, relating to the undercut shape having ruggedness formed on the cylindrical inner diameter side which is relatively easily achieved in the conventional technique, a molded article remains in a mold and can not be released, or the rugged shape is exfoliated or whitened to make the shape instable and, furthermore, the mold itself is damaged upon repeated molding, when performing an alternate test with a material containing non-petroleum resources even when performing the releasing by means of forced extraction. Ž<P>SOLUTION: Injection molded parts which are connected with each other by fitting hollow parts and protruded parts are molded by using a molding material made by mixing polylactic acid and a thermoplastic resin, wherein a lubricant is compounded into the molding material by 0.5 wt.% to 5.0 wt.% with respect to the total weight. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
