Resin sealing apparatus for use in manufacturing a resin-sealed

Details Resin sealing apparatus for use in manufacturing a resin-sealed Resin sealing apparatus for use in manufacturing a resin-sealed

Filed on

1990-07-03

Date issued

1991-10-01

Examiner

Woo, Jay H.

Patent Class

Plastic article or earthenware shaping or treating: apparatus

SubClass

Distinct means to feed, support or manipulate preform stock...

SubSubClass

Opposed registering coacting female molds

Other Related Categories

249 95, 26427217, 425544, 425546, 425588, 425DIG228, B29C 4502, B29C 4527, B29C 4534

Type

Patent

Status

active

Patent number

050529072

Description

ABSTRACT:
A resin sealing apparatus that has separable molds having a pot in which resin is injected. The pot communicates with cavities, in which semiconductor chips are set, by runners. The runners lead the resin injected in the pot to the cavities. A recess is provided at the distal end of each runner to hold the resin and air pressed out from the runner.

REFERENCES:
patent: 3659821 (1972-05-01), Sakamoto et al.
patent: 3779506 (1973-12-01), Adams
patent: 4012025 (1977-03-01), Ernst et al.

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