10 results about "Cellulose fiber" patented technology

The invention provides a cellulosic fiber fabric ink jet transfer printing method. The cellulosic fiber fabric ink jet transfer printing method takes hydrophobic PET (polyethylene terephthalate) filmsor BOPP (biaxially-oriented polypropylene) films as base materials and comprises, firstly, in an ink jet mode, printing active dye ink onto the surface of the hydrophobic films which are processed with coatings, secondly, laminating and rolling the printed films with cellulosic fiber fabric to complete transfer of patterns, and lastly, performing steaming fixation and washing to complete a printing process. The cellulosic fiber fabric ink jet transfer printing method is high in dye transfer rate, good in color fastness of printed fabric and capable of ensuring reusability of the printed films.

The invention belongs to the technical field of regenerated fibers, and particularly relates to an antibacterial and antiviral regenerated cellulose fiber and a preparation method thereof. The antibacterial and antiviral regenerated cellulose fiber comprises a viscose fiber, a single-layer capsule wall composite microcapsule and a double-layer capsule wall composite microcapsule; capsule cores inthe single-layer capsule wall composite microcapsule and the double-layer capsule wall composite microcapsule independently comprise plant antibacterial and antiviral extracts and vitamins; componentsof a capsule wall of the single-layer capsule wall composite microcapsule comprises beta-cyclodextrin, a capsule wall of the double-layer capsule wall composite microcapsule comprises an inner-layercapsule wall body and an outer-layer capsule wall body, components of the inner-layer capsule wall body comprise beta-cyclodextrin, and components of the outer-layer capsule wall body comprise porousstarch; and the capsule wall of the single-layer capsule wall composite microcapsule is grafted and cross-linked with a bonding fiber, and the capsule wall of the double-layer capsule wall composite microcapsule is grafted and cross-linked with the viscose fiber. The antibacterial and antiviral regenerated cellulose fiber can avoid the loss of effective components; and meanwhile, the persistence of the effective components in playing a role can be improved.

A knitted textile fabric for use in safety apparel, comprising a first yarn containing modacrylic fibers and a second yarn containing apparel, preferably cellulosic, fibers. The first and second yarns are interknitted with one another, e.g., in plated or bi-ply, relationship with the modacrylic yarn disposed predominantly at an outer face of the fabric for imparting flame resistant properties and an affinity for high visibility dyes and with the cellulosic yarn disposed predominantly at the opposite face of the fabric for imparting a hand suitable for comfortable body contact with a user's skin.

The invention discloses a method for preparing a totally chlorine-free high-whiteness cellulose fiber. The method comprises the following steps of: (1) adding a surfactant and a dispersing agent into a fluorescent whitening agent to prepare whitening agent pulp by adding water, or mixing the fluorescent whitening agent and an acid to prepare whitening agent solution; (2) preparing the original liquid of viscose according to the conventional process, adding whitening agent pulp or the whitening agent solution into ripening viscose according to the finished fiber weight ratio of 0.05 to 5 weight percent to stir the mixture uniformly, and defoaming and filtering to prepared original viscose spinning solution; and (3) introducing the original viscose spinning solution into a coagulating bath to perform spinning forming and preparing the totally chlorine-free high-whiteness cellulose fiber with fiber whiteness of over 90 percent by the steps of drafting silk and postprocessing. By the method, pollution of organic chlorine compounds to the viscose fiber and environmental pollution during waste water emission are avoided; and the whiteness of the viscose fiber reaches over 90 percent and meets the whiteness requirement of the high-whiteness viscose fiber.

The present invention relates to low acetated cellulose fibers, wherein hydroxyl groups of the cellulose are substituted by partial acetate groups, the substitution degree is 0.01-0.5, the fibrillation index is less than or equal to 2, the fiber breaking strength is more than or equal to 2.0 cN/dtex, the elongation at break is 6-30%, and the size is less than or equal to 3.5 dtex. The present invention further provides a preparation method for the low acetated cellulose fibers. According to the method, the solvent can be recycled during the whole production process, the process has characteristics of safety, environmental protection, concision and efficiency; the prepared low acetated cellulose fibers have characteristics of uniform acylation degree, good strength, low fibrillation index, smooth hand feeling, soft gloss, excellent dyeing property and the like; the application range of the fibers is wide.

The invention belongs to the technical field of articles for daily use and discloses an oral cleaning wet tissue. The oral cleaning wet tissue comprises a biodegradable base material and impregnation liquid. The biodegradable base material is made by weaving of cellulosic fibers and chitin fibers. The impregnation liquid is prepared from, by weight, 1-3 parts of glucolactone, 1-3 parts of maltose fatty acid ester, 10-20 parts of xylitol, 5-10 parts of mint leaves and 100 parts of purified water, wherein citric acid and sodium citrate adjust pH to 3.5-5.5. The oral cleaning wet tissue is effective in cleaning of bacteria and residues in oral cavity and can be used by infants due to safety and nontoxicity of components. By adoption of a biodegradable antibacterial wet tissue as the base material, the problem of bacterium resistance of the wet tissue is effectively solved while pressure caused by hard degradability of the wet tissue to the environment is relieved.

The invention provides a preparation method of modified intumescent flame-retardant cellulose fibers. The preparation method comprises the following steps of preparing an intumescent flame-retardant system and preparing flame-retardant viscose fibers. Ammonium polyphosphate used in the method has the characteristics of an acid source and a gas source, the cellulose fibers can provide sufficient carbon sources, the ammonium polyphosphate is modified through a sol-gel method, and the ammonium polyphosphate is added into the fibers, meanwhile, a large number of silicon elements are provided, so that the multi-element synergistic flame retardant effect is achieved; and the flame-retardant fibers prepared by the preparation method disclosed by the invention are small in addition amount of a flame retardant, and can achieve a certain flame-retardant effect at the same time. The limit oxygen index is greater than or equal to 27%, the off-fire afterflame time is less than or equal to 7S, and the vertical combustion damage length is less than or equal to 150mm; and after 50 times of washing, the limit oxygen index is greater than or equal to 25%, the off-fire afterflame time is less than or equal to 10S, and the vertical combustion damage length is less than or equal to 200mm.