Insert molding method using a crush rib

Details Insert molding method using a crush rib Insert molding method using a crush rib

1992-04-09

1994-04-26

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

26427215, 26427217, 264276, B29C 4514, B29C 4516

Patent

active

053064593

ABSTRACT:
A method for encapsulating at least a portion of a heat sink insert with plastic material has been provided in which flashing has been eliminated. There is provided a heat sink insert which has a bottom surface, a shoulder portion, and a rib member formed integrally with and extending upwardly from the shoulder portion to define a crush zone. The rib member is deformed to conform with the contour of a cavity formed by the first and second mold plates so as to create a seal between the insert and the cavity. The rib member also serves to compensate for dimensional variations of the insert and the cavity.

REFERENCES:
patent: 4314960 (1980-08-01), Hass
patent: 4336009 (1982-06-01), Wolf
patent: 4970103 (1990-11-01), Wolf et al.
patent: 5041902 (1991-08-01), McShane

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