Reuseable mold for forming a hollow aggregate filled thermoset a

Details Reuseable mold for forming a hollow aggregate filled thermoset a Reuseable mold for forming a hollow aggregate filled thermoset a

1991-12-31

1993-08-31

Woo, Jay H.

Static molds

Mold including core and means to remove core

249 661, 249134, 249144, 249149, 249166, 425437, B29C 3900

Patent

active

052402231

ABSTRACT:
The present invention is directed to a reuseable mold for casting a hollow form made of an aggregate filled thermosetting resin. The reuseable mold includes an outer mold, made from sheets of thermoplastic resin, and an inner mold, also made from sheets of thermoplastic resin, having a base with plugable opening(s) for connecting an air supply for popping the inner mold from the cast hollow form fabricated in the reuseable mold. The sheets are preferably 1" sheets of polyethylene.

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