Method for manufacturing a core mold for foam-molding and the core mold
AssigneeKaneka Corporation
InventorsMasaaki Shimokawa, Tsuyoshi Umetani, Mituharu Yamazumi
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Abstract
A method for manufacturing a core mold for foam-molding 1, provided with a concavo-convex pattern 5 on its mold surface 1a for forming a design pattern 4 on the surface 3a of a foam-molded article 3, comprises the steps of forming a reverse concavo-convex pattern 7 that is reverse of the concavo-convex pattern 5 on the surface 6a of a core mold making model 6 made of a conductive material having the same shape as the mold surface 1a, and transferring the reverse concavo-convex pattern 7 by electric discharge machining to the mold surface 1a, so as to form the concavo-convex pattern 5.
Claims3
A method for manufacturing a core mold for foam-molding provided with a concavo-convex pattern on its mold surface for forming a design pattern on the surface of a foam-molded article, comprising the steps of:
- forming a reverse concavo-convex pattern that is reverse of said concavo-convex pattern, on the surface of a core mold making model made of a conductive material having the same shape as said mold surface;
- and
- transferring said reverse concavo-convex pattern by electric discharge machining to said mold surface, so as to form said concavo-convex pattern.
Dependencies are inferred from the claim text.