Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Bulk deposition of particles by differential fluid pressure
Patent
1986-05-02
1989-03-14
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Bulk deposition of particles by differential fluid pressure
264517, 264544, 264119, 264122, 264128, B29C 4302, D04H 154
Patent
active
048122831
ABSTRACT:
A molded article, for example, a filter or a preform used in the manufacture of fiber-reinforced composites, is manufactured from an air laid batt from a single fiber type or a mixture of fibers. The batt is either resinated with a thermoplastic material or includes a thermoplastic binder fiber. The batt is formed into the desired shape of the molded article in a through-air mold and heated sufficiently to set the thermoplastic material, so that the resulting article retains the desired shape. If the article is to be used as a fluid filter, it can be used either as it is removed from the mold if a filter of uniform density is desired, of the article can be further processed in a compression mold to densify portions of the article to thereby form, for example, a fluid impervious portion used as a gasket. If the article is to be used as a preform for a structural composite, it is then to be transferred to a resin injection mold.
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Shell Technical Brochure.
Farley Radcliffe W.
Homonoff Edward C.
Rodman Clarke A.
Vaughn Edward A.
Allied-Signal Inc.
Antonis William N.
Decker Ken C.
Fertig Mary Lynn
Silbaugh Jan H.
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