Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Temperature control
Patent
1981-03-02
1983-02-15
Hall, James R.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Temperature control
425547, 425574, 264121, 406144, A23G 170
Patent
active
043738877
ABSTRACT:
Apparatus for producing a porous plastic molded product of uniform, predictable porosity throughout. A fluidized airstream of moldable plastic powder is formed. Water may be injected into said fluidized powder airstream for maintaining said powder in a uniform, fluidized dispersion. The moisturized, fluidized, powder airstream is injected into a cavity of a closed mold to fill said mold cavity with said powder. The mold is maintained at a temperature and for a time sufficient to at least partially fuse said powder particles together without melting said particles, thereby to form a porous, plastic molded product. The mold is partially separated for cooling the product which is then discharged from the mold. The product may be further cured by heating the molded product in an oven at a temperature and for a time sufficient to cure said molded product without melting said plastic or glazing said product.
REFERENCES:
patent: 1423536 (1922-07-01), Moser
patent: 3048537 (1962-08-01), Pall et al.
patent: 3099045 (1963-07-01), Honkanen
patent: 3162704 (1964-12-01), Attanasio et al.
patent: 4201742 (1980-05-01), Hendry
Hanson Timothy A.
Smith David W.
Drake Hugh H.
Hall James R.
Teledyne Industries Inc.
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