Molding processes and apparatus and a molded product

Details Molding processes and apparatus and a molded product Molding processes and apparatus and a molded product

1997-04-22

2000-08-15

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264255, 264273, 264274, 264275, 264279, 425125, B28B 716, B29C 4516

Patent

active

061031658

ABSTRACT:
To provide a molding apparatus and a molding process which enable a primary product molded in a primary mold to be held in a secondary mold stably, so that the primary product may not be displaced by a synthetic resin material injected into the secondary mold. If a synthetic resin material is injected into a primary mold cavity 173 in a primary mold 85 into which molding protrusions 187 project, there is molded a primary product 340 having engaging holes 191 formed on its surface. Protrusions 227 projecting into a secondary mold cavity 225 in a secondary mold 87 are engaged in the engaging holes 191 of the primary product 340 to secure it in the secondary mold cavity 225, and a synthetic resin material is injected into the secondary mold cavity 225 to mold a secondary product 361 having through holes made by the engaging protrusions 227 formed on its surface through which the engaging protrusions 227 are removable.

REFERENCES:
patent: 3354249 (1967-11-01), Morin
patent: 5464578 (1995-11-01), Salter et al.
patent: 5527502 (1996-06-01), Kiuchi et al.
patent: 5756029 (1998-05-01), Nakamichi et al.

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