TH22816B - Method for producing cellulose fibers - Google Patents

Abstract

DC60 (11/08/49) This invention relates to a method for producing lyocell-type cellulose fibers by making The process of cellulose solution in Tercariamine Oxide Acquies is based on spin-dry / wet method. Have used a solution containing the amount of cellulose The molecular weight of at least 5x10 to the power of 5 is between 0.05 and 0.7% by mass when calculated on the base mass of the substance. Melt for spinning The invention method allows the use of a spinning head with more than 10,000 spinning holes to perform spinning operations, where the holes are arranged so that the side spinning holes are spaced at most 3 mm. And that the linear density of the spinning holes is at least 20. The invention involved a method for producing cellulose-lyocell fibers by making Process of cellulose solution in Tercariamine Oxide. This method is characterized by the spinning-dry / wet method. Have used a solution containing the amount of cellulose The molecular weight of at least 5x105 is between 0.05 and 0.7% by mass when calculated on the base mass of the substance. Melt for spinning The invention method allows the use of a spinning head with more than 10,000 spinning holes to perform spinning operations, where the holes are arranged so that the side spinning holes are spaced at most 3 mm. And that the linear density of the spinning hole is at least 20

Claims (9)

1. The production process of cellulose fibers - Lyocell (Lyocell) by the process of substances. Dissolve cellulose in Terrieramine Oxide Acquieses, which can be spun-dry / wet process. It has the characteristics that it uses cellulose-based and / or Other polymers with weight At least 5x105 molecules are between 0.15% by mass and 0.70% by mass when calculated on the mass base of the solution. 2. The process according to claim 1, which is characterized by the use of blending solutions containing Cellulose with a molecular weight of at least 5x105 is between 0.10 and 0.55% by mass when charged on a base. Mass of solution 3. The process according to claim 2, which is characterized by the use of blending solutions containing Cellulose with a molecular weight of at least 5x105 is between 0.15 and 0.45% by mass when charged on a base. Mass of solution 4. The process under any of the claims 1 to 3 is unique in that N-Methyl-Morpholine-N-Oxide was used as tercariamine oxide. 5. The use of a cellulose solution in a spinable terrarium oxide, an alkaline oxide, where the solution contains cellulose with a molecular weight of at least 5x105, between 0.05 and 0.70% by mass when charged on a base. Mass of solution for the production of cellulose fibers with a titre at most 1 Detex 6.Lyocell cellulose fibers This can be obtained by processing any one of Claims 1 to 4 and characterized by that it contains at least 5x105 cellulose between 0.25 and 7.0% with a particular mass between 1.0 and 3.0%. By mass when calculated on a mass basis Of cellulose fibers 7. Cellulose fibers according to claim 6, which have the characteristics that It has at most 1 detex. 8.Cellulose fibers according to any of the terms 6 or 7 are characterized by that they are supplied as staple fibers. 9. Production process of lyocell cellulose fibers By the process of the solution Cellulose in Tercariamine Oxide Acquieses that are spun-dry / wet It is characterized by (1) using a spinning solution containing at least 5x105 cellulose between 0.05 and 0.70% by mass when calculated on the basis of the mass of the solution and (2) using a spinning die with 10,000+ spinning holes for blending In which these holes are arranged In such a way that the side spinning holes are spaced at most 3 mm from each other and that the tightness The linear number of spinning holes is at least 20.