| 摘要 |
PROBLEM TO BE SOLVED: To realize cost reduction by omitting a work of scraping stripes remained in a divided surface, which are generated upon producing a material using a conventional plaster mold divided in two pieces and further by exchanging only a part of a mold when a deficiency occurs in a screw type mouth part. SOLUTION: A divided plaster mold is used only for the body part of a sealed container, a screw type mouth is molded only by one plaster mold, and the mold can be removed by rotating like as a screw, whereby exchange of a plaster mold only for a screw type mouth (B in the figure) becomes possible, so that cost reduction can be realized together with the retention of accuracy. COPYRIGHT: (C)2007,JPO&INPIT
|
