Use of CO.sub.2 -soluble materials in making molds

Details Use of CO.sub.2 -soluble materials in making molds Use of CO.sub.2 -soluble materials in making molds

1996-12-03

1999-01-19

Batten, Jr., J. Reed

Metal founding

Process

Including recycling of process material

164 34, B22C 702, B22C 904

Patent

active

058604677

ABSTRACT:
A structure of CO.sub.2 -insoluble material has a three-dimensional object of CO.sub.2 -soluble material positioned inside. The object is contacted with a fluid containing carbon dioxide which dissolves the object in the fluid. The fluid is then removed to form a cavity in the structure.

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