发明名称 METHOD OF MOLDING PLASTICS FILM FOR VACUUM CASTING MOLD
摘要 The casting-mould pattern (3) has a shaft-like cutout (3a). The surface of the pattern, including the cutout (3a), is intended to be lined, in a finishing manner, with a single plastic sheet (5), without destroying the same. First of all, an opening, extending through the pattern (3), is produced and, therein, there is arranged a body (4) which is designed such that it corresponds in cross-section with the opening and can be displaced between a raised and a lowered position in which the body forms the base of the cutout in the pattern. When the body (4) in the cutout (3a) is in its raised position, a plastic sheet (5) is then made to adhere to the surface of the pattern and of the body (4), and said body is then pushed downwards into the lowered position. In this arrangement, the body takes that part of the plastic sheet which covers it along into the lowered position, with the result that a cutout (3a) lined by the plastic sheet is formed on the pattern (3). <IMAGE>
申请公布号 JPS5286450(A) 申请公布日期 1977.07.18
申请号 JP19760003415 申请日期 1976.01.14
申请人 MITSUBISHI HEAVY IND LTD 发明人 TORIKAI KIYOSHIGE
分类号 B29C51/10;B22C7/00;B22C9/03;B29C31/00;B29C51/00;B29C51/04 主分类号 B29C51/10
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