High density mold

Details High density mold High density mold

1991-06-21

1993-06-08

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping surface including means to release or remove product...

By movable mold sections

249 64, 425468, 425556, 425577, B29C 3300, B29C 3936

Patent

active

052177289

ABSTRACT:
A high density mold (8), for molding performs having a high density of very small openings, having: a core pin sub-assembly (10) made from a number of plates (16) having core pins (18) extending outwardly from an edge of each plate; and, a stripper assembly (40) that is composed of a stripper sub-assembly (14), formed by bonding thin sheets (34) with apertures (36) corresponding to the core pins (18), and a support sub-assembly (12), formed by a number of plates (24) with spacers to define spaces (26) for the core pins (18), the stripper sub-assembly (40) slides along the core pins (18) to strip the molded preforms from the core pin sub-assembly (10).

REFERENCES:
patent: 3004291 (1961-10-01), Schad
patent: 3192578 (1965-07-01), McCormick
patent: 3278152 (1966-10-01), Miller et al.
patent: 3509603 (1970-05-01), Halsall et al.
patent: 3669598 (1972-06-01), Tucker
patent: 4706924 (1987-11-01), de Larosiere
patent: 4819476 (1989-04-01), Bakermans et al.
patent: 4957800 (1990-09-01), Grabbe
patent: 5074779 (1991-12-01), Tsutsumi et al.

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