Process of making cellulose moldings and fibers

Details Process of making cellulose moldings and fibers Process of making cellulose moldings and fibers

1998-06-10

1999-10-19

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26421114, 26421116, 264237, D01F 202

Patent

active

059684348

ABSTRACT:
To prepare cellulose mouldings, a solution of cellulose in a tertiary amine-oxide is moulded in a hot state and the moulded solution is introduced into a precipitation bath in order to precipitate the contained cellulose, wherein the hot moulded solution is cooled before introduction into the precipitation bath. Cooling occurs immediately after the moulding process and preferably consists of blowing air horizontally on to the cellulose moulding. The process according to the invention allows spinning of the cellulose solution with a high fiber density without the spun fibers sticking together after emerging from the spinneret. In spite of the high fiber density, it furthermore allows the use of a long air gap between the spinneret and the precipitation bath, by which means sufficient time is generated in the spinning process to affect the textile properties of the fibers by drawing at the die (FIG. 1).

REFERENCES:
patent: 1933587 (1933-11-01), Dreyfus et al.
patent: 1934618 (1933-11-01), Briggs et al.
patent: 2131810 (1938-10-01), Kinsella et al.
patent: 2179181 (1939-11-01), Graenacher
patent: 2222797 (1940-11-01), Dreyfus et al.
patent: 2284028 (1942-05-01), Ubbelohde
patent: 3118012 (1964-01-01), Kilian
patent: 3299469 (1967-01-01), Charlton
patent: 3824050 (1974-07-01), Balk
patent: 3836346 (1974-09-01), Stalego
patent: 3858386 (1975-01-01), Stofan
patent: 3969462 (1976-07-01), Stofan
patent: 3976411 (1976-08-01), Rahlfs et al.
patent: 3996321 (1976-12-01), Weinberger
patent: 4038357 (1977-07-01), Boyes et al.
patent: 4078034 (1978-03-01), Lewis
patent: 4080143 (1978-03-01), Upmeier
patent: 4115048 (1978-09-01), Alderfer et al.
patent: 4144080 (1979-03-01), McCorsley, III
patent: 4261943 (1981-04-01), McCorsley, III
patent: 4285646 (1981-08-01), Waite
patent: 4305703 (1981-12-01), Lupke et al.
patent: 4340559 (1982-07-01), Yang
patent: 4440711 (1984-04-01), Kwon et al.
patent: 4526597 (1985-07-01), Olinger et al.
patent: 4601649 (1986-07-01), Upmeier
patent: 4643750 (1987-02-01), Glaser
patent: 4712988 (1987-12-01), Broaddus et al.
patent: 4713290 (1987-12-01), Kwon et al.
patent: 4804511 (1989-02-01), Dieper et al.
patent: 4836507 (1989-06-01), Yang
patent: 4838774 (1989-06-01), Balk
patent: 4850836 (1989-07-01), Maeda et al.
patent: 5178814 (1993-01-01), Lemond
patent: 5230905 (1993-07-01), Fare et al.
patent: 5252284 (1993-10-01), Jurkovic et al.
Final Decision in Patent Interference No. 104,034 (mailed Sep. 3, 1998).
Final Decision in Patent Interference No. 104,035 (mailed Sep. 3, 1998).
English language abstract of EP 40 482.
English language abstract of EP 50 483.
English language abstract of EP 105 169.
English language abstract of EP 442405.
English language abstract of JP 57-61113.
English language abstract of DE 28 30 685.
English language abstract of DE 37 08 168.
English language abstract of DD 218 121.
English language abstract of Austrian application AT 2724/89.

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