Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By treating occluded solids
Patent
1974-08-16
1976-05-04
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By treating occluded solids
260 25M, 264211, B29D 2700
Patent
active
039549275
ABSTRACT:
A method is disclosed for preparing a porous structure of ultra high molecular weight polyethylene. A heterogeneous composite of the polyethylene and a particular hydrocarbon is heated to a temperature above the melting point of the hydrocarbon but below the melting point of the polyethylene. The composite is then shaped. After such shaping the temperature is then raised to a temperature above the melting point of the polyethylene and maintained until complete fusion of the polyethylene particles occurs. Thereafter the hydrocarbon is extracted from the cooled shaped structure.
REFERENCES:
patent: 3536796 (1970-10-01), Rock
patent: 3607793 (1971-09-01), Mahlman
Duling Irl N.
Merges, Jr. John C.
Anderson Philip
Hess J. Edward
Johnson Donald R.
Potts, Jr. Anthony
Sun Ventures, Inc.
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