D01F2/02

Method for manufacturing fibrous yarn
11685096 · 2023-06-27 · ·

Disclosed is a method for the manufacture of fibrous yarn including the steps, where an aqueous suspension including fibers and at least one rheology modifier is provided, followed by directing the suspension through at least one nozzle, to form at least one yarn, and then dewatering the yarn.

METHOD FOR PREPARING CELLULOSE DOPE

The invention relates to a method for preparing a cellulose dope comprising mixing and dissolving the cellulosic raw material in dilute and concentrated aqueous organic solvent in a two-stage process to form a homogeneous slurry, followed by heating the homogeneous slurry to obtain a cellulose dope containing 11% to 20% cellulose by weight. The invention also relates to a cellulose dope comprising 11% to 20% cellulose by weight and 73% to 79% aqueous organic solvent wherein the concentration of the cellulosic and metallic impurities in the cellulose dope shows a percent reduction of 20% to 50% from the cellulosic raw material.

CELLULOSE FIBER, FIBER REINFORCED RESIN COMPOSITION, METHOD FOR PRODUCING CELLULOSE FIBER, AND METHOD FOR PRODUCING FIBER REINFORCED RESIN COMPOSITION

Provided are a cellulose fiber containing cellulose II, the cellulose fiber having improved heat resistance, as well as a fiber reinforced resin composition, a method for producing the cellulose fiber, and a method for producing the fiber reinforced resin composition. The cellulose fiber contains the cellulose II having a content of an imidazolium salt of 1% by mass or less.

CELLULOSE FIBER, FIBER REINFORCED RESIN COMPOSITION, METHOD FOR PRODUCING CELLULOSE FIBER, AND METHOD FOR PRODUCING FIBER REINFORCED RESIN COMPOSITION

Provided are a cellulose fiber containing cellulose II, the cellulose fiber having improved heat resistance, as well as a fiber reinforced resin composition, a method for producing the cellulose fiber, and a method for producing the fiber reinforced resin composition. The cellulose fiber contains the cellulose II having a content of an imidazolium salt of 1% by mass or less.

Method for producing shaped functional cellulose articles with targeted release of active ingredients

Methods for producing cellulose articles having controlled release of active ingredient include dispersing pulp in aqueous direct solvent for cellulose to form a slurry. Organically modified or ion-exchange-activated phyllosilicate is homogenized in a direct solvent for cellulose with exfoliation by shearing, then mixed with the slurried pulp. A mixture of active ingredient and a lipophilic matrix material or a water-in-oil (“W/O”) emulsion containing active ingredient is stabilized with thickener, converted into a gel-like paste, and mixed with the slurried pulp. Water is stripped from the mixture until all cellulose is dissolved, the mixture is formed into shaped articles, and dried. Exemplary active ingredients include cosmetic active ingredients, fat-soluble vitamins or apolar plant extracts. Domains of active ingredient and matrix material or emulsion containing active ingredient are present as fine divisions within the inventive articles. Exemplary shaped articles include functional fibers in knitted, woven and nonwoven fabrics; paper; foils and membranes.

Method for producing shaped functional cellulose articles with targeted release of active ingredients

Methods for producing cellulose articles having controlled release of active ingredient include dispersing pulp in aqueous direct solvent for cellulose to form a slurry. Organically modified or ion-exchange-activated phyllosilicate is homogenized in a direct solvent for cellulose with exfoliation by shearing, then mixed with the slurried pulp. A mixture of active ingredient and a lipophilic matrix material or a water-in-oil (“W/O”) emulsion containing active ingredient is stabilized with thickener, converted into a gel-like paste, and mixed with the slurried pulp. Water is stripped from the mixture until all cellulose is dissolved, the mixture is formed into shaped articles, and dried. Exemplary active ingredients include cosmetic active ingredients, fat-soluble vitamins or apolar plant extracts. Domains of active ingredient and matrix material or emulsion containing active ingredient are present as fine divisions within the inventive articles. Exemplary shaped articles include functional fibers in knitted, woven and nonwoven fabrics; paper; foils and membranes.

PROCESS FOR THE PRODUCTION OF A TREATED PULP, TREATED PULP, AND TEXTILE FIBRES PRODUCED FROM THE TREATED PULP

The present invention relates to a process for the production of treated pulp comprising the steps of: i. providing a fibre source material; ii. subjecting the fibre source material to pre-hydrolysis; iii. subjecting the pre-hydrolysed fibre source material to alkaline chemical pulping process, preferably kraft pulping, to obtain an alkaline pulp; iv. optionally adjusting the pH of the obtained pulp to above pH 9; v. subjecting the alkaline pulp to a bleaching sequence comprising contacting the pulp with ozone (Z) in alkaline conditions to obtain a treated pulp. The invention also relates to a treated pulp obtained, textile fibres produced from the treated pulp, textile products comprising the textile fibres and to the use of the treated pulp.

Fibers and Yarns with Blocking Function
20170306531 · 2017-10-26 · ·

A polymer composition comprising a polymer and at least one active substance selected from the group consisting of a substance generating an occlusion, in particular a substance generating an internal occlusion or a substance generating an external occlusion; a moisturizing substance; a substance reducing pain or itching; and mixtures of these.

Fibers and Yarns with Blocking Function
20170306531 · 2017-10-26 · ·

A polymer composition comprising a polymer and at least one active substance selected from the group consisting of a substance generating an occlusion, in particular a substance generating an internal occlusion or a substance generating an external occlusion; a moisturizing substance; a substance reducing pain or itching; and mixtures of these.

REGENERATED CELLULOSIC FIBRES SPUN FROM AN AQUEOUS ALKALINE SPINDOPE
20220033529 · 2022-02-03 ·

The present invention is directed to a cellulosic fibre composition comprising regenerated cellulose and one or more additives, wherein

a) the cellulosic fibre composition is produced by injecting an aqueous alkaline spindope solution or suspension comprising dissolved cellulose in a concentration from about 5% to about 12% by weight of spindope and at least one of an additive and a nano-sized structured particulate filler through a nozzle into an alkaline coagulation bath forming cellulosic filaments; and

b) stretching or washing cellulosic filaments from a) in one or more stretching and washing baths forming a regenerated cellulosic fibre.