Plastic and nonmetallic article shaping or treating: processes – With step of cooling to a temperature of zero degrees c. or...
Patent
1997-06-26
1999-06-01
Fiorilla, Christopher A.
Plastic and nonmetallic article shaping or treating: processes
With step of cooling to a temperature of zero degrees c. or...
264621, 264628, 264640, 419 2, B05B 300, B29C 3502
Patent
active
059085878
ABSTRACT:
Method of making porous, fibrillose bodies from fibrils bonded together into a self-supporting structure. A mixture of fibrils and a viscous, non-newtonian, liquid vehicle including an organic hydrosorbent and water is (1) injected into a mold, (2) frozen in the mold to form a frozen precursor of the article, (3) ejected from the mold while still frozen, (4) freeze-dried, and (5) finally heated to remove the hydrosorbent and bond the particles together. The process is particularly effective for making fibrillose preforms for infiltrating with metal in the manufacture of metal matrix composites.
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Gross Kenneth B.
Kibbel Bradley Wendt
Schreck Richard Michael
Siak June-Sang
Fiorilla Christopher A.
General Motors Corporation
Plant Lawrence B.
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