Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – By vibration or agitation
Patent
1986-02-10
1989-09-19
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
By vibration or agitation
65 214, 75 05C, 264 5, 264 12, 264 43, B29B 910, B29B 912
Patent
active
048679313
ABSTRACT:
Fiber reinforced hollow microspheres made from dispersed particle film forming compositions including fibers, dispersed particles, a binder, a film stabilizing agent, a dispersing agent and a continuous liquid phase. Porous and non-porous fiber reinforced hollow microspheres can be made. The fiber reinforced hollow microspheres have walls with voids which are interconnected to each other and to the inner and outer wall surfaces, and the fiber reinforced hollow microspheres can be used as membrane substrates in selective separation processes and in biotech processes. The fiber reinforced hollow microspheres can be used as supports for catalysts and as enclosures for catalysts, adsorbents and absorbents. The fiber reinforced hollow microspheres can also be used as filler materials and as proppants for increasing gas recovery from gas wells. The fiber reinforced hollow microspheres are made by a process which includes forming a film of a fiber and dispersed particle film forming composition across a coaxial blowing nozzle, applying a blowing gas at a positive pressure on the inner surface of the fiber and dispersed particle composition film to blow the film and form an elongated cylinder shaped film of the fiber and dispersed particle composition. The cylinder shaped film is initially closed at its outer end, and as the cylinder shaped film progresses away from the coaxial nozzle, the film closes at its inner end, prior to the beginning of the formation of the next cylinder shaped film at the coaxial nozzle. The hollow fiber and dispersed particle composition microspheres are individually formed as they emerge from the coaxial nozzle. The blown microspheres form substantially spherical hardened fiber reinforced hollow green microspheres.
REFERENCES:
patent: 4059423 (1977-11-01), De Vos et al.
patent: 4111713 (1978-09-01), Beck
patent: 4303431 (1981-12-01), Torobin
patent: 4303603 (1981-12-01), Torobin
patent: 4349456 (1982-09-01), Sowman
patent: 4415512 (1983-11-01), Torobin
patent: 4671909 (1987-06-01), Torobin
Carvellas Perry
Fertig Mary Lynn
Materials Technology Corporation
Silbaugh Jan H.
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