Bacon & Thomas
Method of making cellulose yarn solution
 An improved method of making cellulose yarn solution made up of solvents such as N-methylmorpholine-N-oxide and recovered caprolactam involves cutting a wood pulp sheet into small pieces, which are subsequently added into a kneading machine having therein water solution containing 63-67% of N-methylmorpholine-N-oxide and recovered caprolactam. The kneading machine is subjected to a three-stage heat treatment to produce the cellulose yarn solution at low cost and best qualities. 
Formosa Chemicals & Fibre Corporation
D C
D01F C08B
inventional inventional
Yuan-Tsung Guo-Jane Hui-Ching
Chen Cheng Chin