Patent classifications
D01F2/10
METHOD FOR PRODUCING A VISCOSE SOLUTION AND A VISCOSE SOLUTION PRODUCED THEREBY AND A METHOD FOR PRODUCING VISCOSE FIBER
Described herein is a method for producing a viscose solution including a step of adding alkyl polyglycoside (APG) prior to and/or during xanthation of alkali cellulose. When APG is added prior to or during xanthation of alkali cellulose, the reactivity between alkali cellulose and CS.sub.2 could be increased and the xanthation could be accelerated, as a result of which formation of agglomerates and/or lumps in the obtained viscose solution and then the obtained viscose fiber spun therefrom is significantly reduced, relative to the situation when conventional surfactants such as phenyl ethoxylate are added likewise. Also described herein is a viscose solution obtained by the foresaid method, and a method for producing viscose fiber with the foresaid viscose solution or including the foresaid method.
METHOD FOR PRODUCING A VISCOSE SOLUTION AND A VISCOSE SOLUTION PRODUCED THEREBY AND A METHOD FOR PRODUCING VISCOSE FIBER
Described herein is a method for producing a viscose solution including a step of adding alkyl polyglycoside (APG) prior to and/or during xanthation of alkali cellulose. When APG is added prior to or during xanthation of alkali cellulose, the reactivity between alkali cellulose and CS.sub.2 could be increased and the xanthation could be accelerated, as a result of which formation of agglomerates and/or lumps in the obtained viscose solution and then the obtained viscose fiber spun therefrom is significantly reduced, relative to the situation when conventional surfactants such as phenyl ethoxylate are added likewise. Also described herein is a viscose solution obtained by the foresaid method, and a method for producing viscose fiber with the foresaid viscose solution or including the foresaid method.
Flame retardant viscose fiber
A flame retardant fabric is directly woven from flame retardant viscose fiber added with inorganic silicon for covering the outside of flammable articles, wherein the flame retardant viscose fiber having denier, strength and flame retardant effect which use silicic acid as the flame retardant, and coating a layer of organic material, melamine flame retardant resin on the surface of silicic acid, and then preparing the flame retardant viscose fiber into an nano-sized particles. The flame retardant fabric has a fineness of 1.11 to 2.78 dtex, and a strength of ≥2.0 cN/dtex, which meets the production requirements of spinning, and does not need to be blended with other high-strength fibers when spinning, and the woven fabric from the flame retardant viscose fiber does not need to be flame retardant, so that the flame retardant fabric has a good flame retardant effect and saves costs through simply the production process.
Textile recycling
A textile recycling method receives textile-waste-to-be-recycled, sorts the waste to isolate cellulose-containing articles from non-cellulose-containing articles, and re-sizes at least some of the cellulose-containing articles to create feedstock. The feedstock is processed in a cellulose solvent reactor, which has at least one ionic liquid. The ionic liquid dissolves intermolecular cellulose bonds of the feedstock to create a spinning dope. Cellulose fibers dissolved in the cellulose-bearing spinning dope solution are extruded in a cellulose coagulation bath reservoir to reconstitute at least some of the cellulose fibers, and the reconstituted fibers are wet-spun to form a continuous cellulose thread that is commercially indistinguishable from virgin fiber thread. Synthetic fiber material is vacuum-extracted or mechanically extracted from the cellulose-bearing solution and recycled into a continuous synthetic thread. Original color of textile-waste-to-be-recycled can be retained or removed, and new color can be added.
Regenerated cellulose fiber
The present invention relates to a regenerated cellulose fiber which contains a hydrophobic substance selected from the group consisting of alkyl ketene dimers, alkenyl ketene dimers, alkyl succinic anhydrides, alkenyl succinic anhydrides, alkyl glutaric acid anhydrides, alkenyl glutaric acid anhydrides, alkyl isocyanates, alkenyl isocyanates, fatty acid anhydrides as well as mixtures thereof incorporated in the cellulose matrix.
Regenerated cellulose fiber
The present invention relates to a regenerated cellulose fiber which contains a hydrophobic substance selected from the group consisting of alkyl ketene dimers, alkenyl ketene dimers, alkyl succinic anhydrides, alkenyl succinic anhydrides, alkyl glutaric acid anhydrides, alkenyl glutaric acid anhydrides, alkyl isocyanates, alkenyl isocyanates, fatty acid anhydrides as well as mixtures thereof incorporated in the cellulose matrix.
CHARCOAL-INFUSED TOWEL
A charcoal-infused towel product is woven from a combination of charcoal-infused yarn fibers and cotton yarn fibers. The charcoal-infused yarn fibers are made by combining a liquefied activated charcoal paste with a liquefied cellulose paste to produce filaments of textile fiber embedded with activated charcoal.
Cellulose xanthate nanofiber
Nanofiber that keep crystallinity are obtained from a cellulose material under light load. The nanofiber are obtained by treating a material containing cellulose with 4% by mass or more and 9% by mass or less of an aqueous alkali metal hydroxide solution to produce alkali cellulose, reacting the alkali cellulose with carbon disulfide to give cellulose xanthate, and defibrating the cellulose xanthate. Then, the xanthate is treated with acid or heat to be regenerated into cellulose nanofiber.
Cellulose xanthate nanofiber
Nanofiber that keep crystallinity are obtained from a cellulose material under light load. The nanofiber are obtained by treating a material containing cellulose with 4% by mass or more and 9% by mass or less of an aqueous alkali metal hydroxide solution to produce alkali cellulose, reacting the alkali cellulose with carbon disulfide to give cellulose xanthate, and defibrating the cellulose xanthate. Then, the xanthate is treated with acid or heat to be regenerated into cellulose nanofiber.
METHOD FOR THE MANUFACTURE OF ANTIBACTERIAL VISCOSE FILAMENT RAYON AND A PRODUCT OBTAINED USING THAT METHOD
The antibacterial viscose rayon, according to the invention, is used for the manufacture of any type of textile articles, including items intended for medical use, ensuring a more lasting antibacterial and antifungal protection due to the uniform distribution of the antibacterial additive throughout the entire volume of the fibre. According to the invention, immediately before spinning, the viscose is mixed and homogenized with an antibacterial additive, and then spun following the classical procedure: the viscose solution, with required and strictly specified parameters is fed under pressure to the spinnerets of the spinning machine from which the cellulose solution enters a spin bath, where as a result of the chemical reactions in course is transformed into fibres subjected afterwards to a subsequent treatment. According to the invention, in the production of dope dyed antibacterial rayon, into the preliminarily prepared suspension composed of one or a couple of pigments, a specified amount of antibacterial additive is introduced, the obtained mix is homogenized and filtered, and then subjected to the classical stages of spinning and subsequent treatments.