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685 results about "Regenerated cellulose" patented technology

Regenerated cellulose is a class of materials manufactured by the conversion of natural cellulose to a soluble cellulosic derivative and subsequent regeneration, typically forming either a fiber (via polymer spinning) or a film (via polymer casting).

Absorbent sheet having regenerated cellulose microfiber network

An absorbent paper sheet for tissue or towel includes from about 99 percent to about 70 percent by weight of cellulosic papermaking fiber and from about 1 percent to about 30 percent by weight fibrillated regenerated cellulose microfiber which was regenerated form a cellulosic dope utilizing a tertiary amine N-oxide solvent or an ionic liquid. Fibrillation of the microfiber is controlled such that it has a reduced coarseness and a reduced freeness as compared with unfibrillated regenerated cellulose microfiber from which it is made and provides at least one of the following attributes to the absorbent sheet: (a) the absorbent sheet exhibits an elevated SAT value and an elevated wet tensile value as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (b) the absorbent sheet exhibits an elevated wet/dry CD tensile ratio as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (c) the absorbent sheet exhibits a lower GM Break Modulus than a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber; or (d) the absorbent sheet exhibits an elevated bulk as compared with a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber. In some embodiments, the pulp is pre-treated with debonder to enhance the wet/dry CD tensile ratio of the sheet.
Owner:GPCP IP HLDG LLC

Graphene blend regenerated cellulose fiber and preparation method thereof

The invention relates to a graphene blend regenerated cellulose fiber. The graphene blend regenerated cellulose fiber is prepared by mixing an oxidized graphene solution and a regenerated cellulose solution, molding a mixture through a viscose wet spinning process and reducing the mixture; the dry breaking strength of the graphene blend regenerated cellulose fiber is not less than 1.8 cN/dtex, the wet breaking strength of the graphene blend regenerated cellulose fiber is not less than 0.9 cN/dtex, the dry breaking elongation of the graphene blend regenerated cellulose fiber is not less than 16%, the mass specific resistance of the fiber is 1-9X106 omega.g/cm2, and the thermal decomposition temperature of the fiber is not lower than 400 DEG C; and with the regenerated cellulose fiber as a matrix, the prepared graphene blend regenerated cellulose fiber has the advantages of good moisture absorption, good air permeability, soft handle and good dyeing performance and has the characteristics of ultrahigh strength, thermal conductivity, electric conductivity, antibacterial property and the like of the graphene; the conductive and thermal properties of the fiber are both improved by being compared with those of the traditional regenerated cellulose fiber; the antibacterial property of the fiber is additionally provided; and the graphene blend regenerated cellulose fiber provided by the invention has the advantages of simple production process, easiness in operation, and higher yield. People estimate that the developed graphene blend regenerated cellulose fiber can be widely applied to the field of costumes, industrial textiles and the like.
Owner:JINAN SHENGQUAN GROUP SHARE HLDG +1

Moisture-absorption, heat-generating, quick-drying, moisturizing and thermal fabric and preparation method thereof

ActiveCN103952845AImprove hydrophilicityGood wicking and moisture-wicking functionSucessive textile treatmentsWeft knittingYarnPolyester
The invention discloses a moisture-absorption, heat-generating, quick-drying, moisturizing and thermal fabric and a preparation method thereof. The fabric is formed by weaving first yarns, second yarns, third yarns and fourth yarns, wherein the first yarns are regenerated cellulose fiber type blended yarns formed by blending linen, wool or cashmere, one or more types of cotton fibers and regenerated cellulose fibers, or regenerated cellulose multi-filaments, or regenerated cellulose staple fiber yarns; the second yarns are modified polyester fiber yarns with non-circular cross sections; the third yarns are cotton fiber type blended yarns formed by blending one or two of polyester staple fiber yarns or polyacrylonitrile fibers and cotton fibers, or all cotton yarns; the fourth yarns are polyurethane fiber yarns. The moisture absorption and heat-generating value of the fabric exceeds national standards, the moisture absorption and quick-drying performance is excellent, and the thermal insulation rate meets national standards; the fabric also has comfortable elasticity and soft and smooth hand feeling of one surface next to the skin. Meanwhile, the preparation method is simple in process, and convenient to operate.
Owner:武汉爱帝针纺实业有限公司

Fluorescent salix mongolica regenerated cellulose fibers and preparation method thereof

The invention discloses fluorescent salix mongolica regenerated cellulose fibers and a preparation method thereof. The preparation method comprises the following steps: peeling off salix mongolica, crushing, sieving, drying and cooling to prepare salix mongolica wood powder; extracting salix mongolica cellulose by adopting an ethanol-acid mixed solution; treating the salix mongolica cellulose by processes of steaming, bleaching and the like to prepare salix mongolica pulp; filtering, decompressing and de-foaming water-soluble up-conversion nano particles and the salix mongolica cellulose to obtain a spinning solution which is uniformly mixed; and spinning the spinning solution by a condensation bath, drafting and molding, refining and drying to obtain the fluorescent salix mongolica regenerated cellulose fibers. A preparation process of the water-soluble up-conversion nano particles comprises the following steps: firstly, synthesizing hexagonal-phase up-conversion luminous nano particles UCNPs by adopting a high-temperature thermal decomposition method; treating the UCNPs with nitrosonium tetrafluoroborate NOBF4, and replacing oleic acid molecules on the surface; finally, reacting with a hydrophilic hyperbranched polymer to obtain the water-soluble up-conversion nano particles. According to the fluorescent salix mongolica regenerated cellulose fibers, the water-soluble up-conversion nano particles and the salix mongolica regenerated cellulose are used as raw materials and are subjected to efficient blending and wet-process spinning to prepare the regenerated cellulose fibers with the excellent fluorescent performance.
Owner:WUJIANG JINGMEIFENG IND

Method for producing high-wet-modulus regenerated cellulose fibers from bamboo pulp

The invention discloses a method for producing high-wet-modulus regenerated cellulose fibers from bamboo pulp. The method comprises a gum making step and a spinning step, and specifically comprises the following steps: with the bamboo pulp having the alpha cellulose content of greater than or equal to 90% and a degree of polymerization in the range from 400 to 500DP as a raw material, subjecting the bamboo pulp to alkali steeping, and adding BerolVisco388 which is produced by Akzo Nobel Company of Sweden and accounts for 0.1-0.2% of the weight of the alpha cellulose in the bamboo pulp in the alkali steeping step to obtain an alkali cellulose; subjecting the alkali cellulose to crushing, squeezing, aging, yellowing, dissolving, filtering, defoaming and ripening to form a spinning solution for spinning; reacting the spinning solution with a spinning bath to obtain primary filaments; and then subjecting the primary filaments to negative drafting, cutting, after treatment and drying processes to obtain finished product fibers. The method provided by the invention realizes the production of the high-wet-modulus regenerated cellulose fibers from the bamboo pulp with low polymerization degree and low alpha cellulose. Besides, the high-wet-modulus regenerated cellulose fibers are greatly improved in wet-and-dry strength and wet modulus, and meets the definition requirements of modal fibers in BISFA (Bureau International pour la Standardisation des Fibres Artificielles) standards.
Owner:唐山三友集团兴达化纤有限公司
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