Process of and apparatus for making celluose products

Details Process of and apparatus for making celluose products Process of and apparatus for making celluose products

1995-06-05

1997-02-18

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

162 70, 162 81, 1621576, 162234, 162261, 4253761, 4253822, 425461, 425464, B29C 4700, D01F 202

Patent

active

056038836

ABSTRACT:
A plant for the production of cellulose films and fibers includes at least one pulping device for producing a first suspension of pulp in an aqueous amine-oxide solution and a first thin-film treatment apparatus for receiving the first pulp suspension and producing a concentrated pulp suspension. The plant also includes a second thin-film treatment apparatus wherein the concentrated pulp suspension is transformed into a mouldable solution of cellulose and a spinning device connected to the second thin-film treatment apparatus, wherein the mouldable cellulose solution is processed into cellulose films and fibers. A process for the production of cellulose films and fibers according to an amine-oxide process includes the steps of suspending pulp in an aqueous amine-oxide solution to produce a first suspension, concentrating the first suspension, producing a mouldable cellulose solution by heating, and processing the solution to form cellulose films and fibers.

REFERENCES:
patent: 2179181 (1937-04-01), Graenacher
patent: 4246221 (1981-01-01), McCorsley, III
patent: 5094690 (1992-03-01), Zikeli et al.
Heimgartner, E., "Devolatilisation of Plastics", Ingenieurwissen, pp. 69-97 (1980).

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