Mold for foam products

Details Mold for foam products Mold for foam products

1990-08-27

1991-12-10

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

249120, 249121, 249134, 249141, 249204, 425812, B29C 2936, B29C 4534

Patent

active

050713310

ABSTRACT:
An improved mold for forming foam products is provided with replaceable mold inserts which can be inserted into a mold block. The mold inserts have a cavity in which the product is foamed. The mold inserts are formed from a stick resistant material. Cap members having vent channels provided therein are adapted to fit into the mold insert. The number and size of vent channels is determined by the desired size and density of the molded foam product.

REFERENCES:
patent: 1471793 (1923-10-01), Israel
patent: 1705328 (1929-03-01), Griffith
patent: 1873081 (1932-08-01), Von Witzki
patent: 1964476 (1934-06-01), Newman
patent: 2166560 (1939-07-01), Schmelzer
patent: 2469067 (1949-05-01), Follin
patent: 2946207 (1960-07-01), Hulterstrum
patent: 3127457 (1964-03-01), Di Pinto
patent: 3656730 (1972-04-01), Hogben et al.
patent: 3838955 (1974-10-01), Dubbeld
patent: 4239175 (1980-12-01), Straubinger
patent: 4944483 (1990-07-01), Nishizawa

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