Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Patent
1992-11-06
1994-11-01
Szekely, Peter
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
264 53, 26421123, 106122, 106127, 521 841, 5211291, B29D 3100, C08H 100, C09D10102, C08J 914
Patent
active
053605861
ABSTRACT:
A process for making a shaped biodegradable cellulosic article from cellulose-containing material having a water content of less than about 50 percent by weight. The process includes forming a dry mix of the material, a bonding agent and an expander. The dry mix is fed to a screw extruder and pressurized to a nominal pressure in the extruder. Water is injected into the pressurized dry mix. The wetted mixture is then extruded into a shaped article. A biodegradable product is also disclosed herein.
REFERENCES:
patent: 92303 (1869-07-01), Goetze
patent: 246391 (1881-08-01), Howell
patent: 750548 (1904-01-01), Lenhart
patent: 1796794 (1931-03-01), Koppelman
patent: 1945024 (1934-01-01), Coil et al.
patent: 3003911 (1961-10-01), Lindstrom et al.
patent: 3546143 (1970-12-01), Corbett
patent: 3736221 (1973-05-01), Evers et al.
patent: 3741863 (1973-06-01), Brooks
patent: 3891497 (1975-06-01), Daane et al.
patent: 3895997 (1975-07-01), Haywood
patent: 3940466 (1976-02-01), Evers et al.
patent: 4098649 (1978-07-01), Redker
patent: 4111744 (1978-09-01), Reiniger
patent: 4123489 (1978-10-01), Kelley
patent: 4148952 (1979-04-01), Nelson et al.
patent: 4377440 (1983-03-01), Gaaland
patent: 4500586 (1985-02-01), Bussey, Jr.
patent: 4508595 (1985-04-01), Gaaland
patent: 4808263 (1989-02-01), Honer
patent: 4867383 (1989-09-01), Terry et al.
patent: 4894192 (1990-01-01), Warych
patent: 4997091 (1991-03-01), McCrea
patent: 5011741 (1991-04-01), Hoffman
patent: 5106880 (1992-04-01), Miller et al.
Wyatt Danny R.
Wyatt Everette L.
Szekely Peter
Wyatt Danny R.
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