Homogeneous cellulose solution and high tenacity lyocell...

Details Homogeneous cellulose solution and high tenacity lyocell... Homogeneous cellulose solution and high tenacity lyocell...

2006-08-29

2006-08-29

Soohoo, Tony G. (Department: 1723)

Agitating

Rubber or heavy plastic working

C366S083000, C366S348000, C106S200200, C264S187000, C264S203000

Reexamination Certificate

active

07097344

ABSTRACT:
The present invention relates to a method for making highly homogenized cellulose solution, wherein the cellulose solution is obtained by obtaining a solidified N-methylmorphorine-N-oxide (hereinafter, referred to as ‘NMMO’) hydrates which is solidified a liquid-state NMMO hydrates comprising 10 to 18% by weight water by using a simple screw-type feeder and by controlling the temperature, feeding the solidified NMMO into a twin-screw type extruder continuously, obtaining a cellulose solution which is fully swelled in a few minutes by dispersing and mixing with cellulose powder in the twin-screw type extruder, and extruding a highly homogenized cellulose solution by feeding the obtained cellulose solution into a melting zone of the extruder to melting the cellulose solution in a few minutes by minimum heat and shear force.

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