Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1979-03-12
1981-04-28
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
15229R, 57210, 156 78, 156161, 264 461, 264147, 264174, 264243, B29D 700
Patent
active
042645450
ABSTRACT:
A mop yarn is produced by extruding onto the embossed face of a conveyor belt a first layer of a fiber reinforced sponge forming viscose mass, feeding regularly transversely spaced core yarns onto the conveyor advanced first layer and extruding a second layer of the sponge forming viscose mass onto the core yarn carrying first layer. The composite layers are then coagulated, regenerated and purified, and the resulting cellulose sponge web is then longitudinally slit to produce sponge strands in each of which is embedded and bonded at least one of the core yarns. The resulting cellulose sponge mop yarn is of rectangular transverse cross section and has low porosity water permeable top and bottom faces at least one of which is embossed and skinless side faces and each yarn has one or more core yarns of cotton twine embedded therein and bonded to the sponge material.
REFERENCES:
patent: 1994396 (1935-03-01), Kilner
patent: 2032941 (1936-03-01), Linscott et al.
patent: 2076711 (1937-04-01), Eagleson
patent: 2122335 (1938-06-01), Berman et al.
patent: 2408398 (1946-10-01), Johnson
patent: 2409660 (1946-10-01), Briggs
patent: 2600143 (1952-06-01), Vaughn
patent: 2979431 (1961-04-01), Perrault
patent: 3068545 (1962-12-01), Stiner
patent: 3301932 (1967-01-01), Chisholm
patent: 3321903 (1967-05-01), Tanzer
Sponge, Inc.
Woo Jay H.
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