1178results about "Monocomponent cellulose artificial filament" patented technology

A lyocell nonwoven fabric having fibers characterized by pebbled surfaces and variable cross sections and diameters along the fibers and from fiber to fiber, is disclosed. The lyocell nonwoven fabric is produced by centrifugal spinning, melt blowing or spunbonding. The lyocell nonwoven fabric has fibers that can be made in the microdenier range with average weights as low as one denier or less. The lyocell nonwoven fabric has fibers with low gloss, a reduced tendency to fibrillate and have enhanced dye receptivity.

Fibers described herein comprise a composition including a polymer and graphene sheets. The fibers can be further formed into yarns, cords, and fabrics. The fibers can be in the form of polyamide, polyester, acrylic, acetate, modacrylic, spandex, lyocell fibers, and the like. Such fibers can take on a variety of forms, including, staple fibers, spun fibers, monofilaments, multifilaments, and the like.

A transfer method includes the steps of placing a donor substrate including a support base and a transfer layer provided on the support base onto a receptor substrate such that the transfer layer faces the receptor substrate, evacuating a space between the receptor substrate and the donor substrate that are placed one on the other, and transferring the transfer layer onto the receptor substrate by applying a radiant ray onto the donor substrate in an evacuated atmosphere.

Cellulosic fibers having enhanced reversible thermal properties and applications of such cellulosic fibers are described. In one embodiment, a cellulosic fiber includes a fiber body including a cellulosic material and a set of microcapsules dispersed in the cellulosic material. The set of microcapsules contain a phase change material having a latent heat of at least 40 J/g and a transition temperature in the range of 0° C. to 100° C., and the phase change material provides thermal regulation based on at least one of absorption and release of the latent heat at the transition temperature. The cellulosic fiber can be formed via a solution spinning process, and can be used in various products where thermal regulating properties are desired.

Cellulose containing dope is extruded through orifices and into a stream of gas moving in a direction generally parallel to the direction that the filaments are formed with varying degrees of mechanical attenuation provided to the filaments using a take-up device, such as a winder.

The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low copper number and including cellulose that has a low average degree of polymerization (D.P.) and a narrow molecular weight distribution. Further, the present invention provides processes for making compositions, useful for making lyocell fibers, by contacting an alkaline pulp having a high hemicellulose content of at least about 7% with an oxidant sufficient to reduce the average degree of polymerization to about 200 to 1100 without substantially reducing the hemicellulose content or increasing the copper number of the pulp.

Cellulosic fibers having enhanced reversible thermal properties and methods of forming such cellulosic fibers are described. In one embodiment, a cellulosic fiber includes a fiber body formed of an elongated member. The elongated member includes a cellulosic material and a temperature regulating material dispersed within the cellulosic material. The temperature regulating material includes a phase change material having a transition temperature in the range of −5° C. to 125° C. The cellulosic fiber can be formed via a solution spinning process and can be used in various products where thermal regulating properties are desired. For example, the cellulosic fiber can be used in textiles, apparel, footwear, medical products, containers and packagings, buildings, appliances, and other products.

This invention relates to a method of preparing cellulose solution which is homogeneous at relatively low temperature, in which a small amount of cellulose powder or polyvinylalcohol is dissolved in the liquid-state, concentrated N-methylmorpholine-N-oxide (hereinafter, referred to as ‘NMMO’) so as to lower the solidifying temperature of NMMO, and then, the resulting solution and cellulose powder are fed into an extruder so as to be mixed, swollen and melted in the extruder.

The present invention relates to a method of producing activated color regions in a web substrate where activated color regions are formed coinciding with deformed regions. The method includes providing a web substrate having an activatable colorant and producing a first activated color region therein. The web substrate is mechanically deformed to produce at least one deformed region in the first activated color region such that a second activated color region is produced coinciding with the at least one deformed region.

The invention discloses a transparent high-strength fiber material. The preparation method comprises the following steps that: cellulose is dissolved in NaOH-urea aqueous solution or LiOH-urea aqueous solution which is pre-cooled at low temperature to obtain a cellulose solution, and different thicknesses of cellulose hydrogels are prepared by the cellulose solution; water in the cellulose hydrogel is replaced into an organic solvent to obtain a cellulose organic gel; the cellulose hydrogel or the cellulose organic gel is subject to supercritical drying, ambient pressure drying or freeze drying to remove a liquid medium so as to obtain a cellulose aerogel; and the cellulose hydrogel, the organic gel or the aerogel are autoclaved at a temperature of 30-200 DEG C under the pressure of 10-160Mpa to obtain the high-strength transparent cellulose material. The cellulose material prepared by the invention has excellent mechanical properties, thermal stability and optical permeability.

Said invention discloses a bamboo charcoal viscose fiber and producing method. The bamboo charcoal is finely selected, coarse cracked, dust removed, trash extracted, and pulverized to less than 0.5 micrometer, the bamboo charcoal micropowder and dispersant are put in water to made into aqueous emulsion slurry, filtered four times by two-layer of poplin filter fabric, respectively spinning in filament spinning machine and shorts spinning machine to obtain said bamboo charcoal viscose fiber which has bacteriostasis and antibiotic effect.

An elastomeric article that contains a chromogen that undergoes a detectable change in color in the presence of one or more microbes is provided. For example, in one embodiment, the chromogen is a solvatochromic dye (e.g., Reichardt's dye) that undergoes a color change in the presence of bacteria or other microbes. More specifically, such dyes may respond to differences in polarity between microbe components (e.g., cell membrane, cytoplasm, etc.) and the environment outside the cell. Alternatively, other mechanisms may be wholly or partially responsible for the interaction between the dye and the microbe, such as acid-base reactions, redox reactions, and so forth.

This invention relates to a process of forming a nanocomposite of cellulose with a clay material that is used as the nanofiller material. The nanocomposites show significant improvements in thermal properties when compared to unbleached cotton and cotton processed under conditions for nanocomposite preparation. The degradation temperature of these nanocomposites is significantly increased over that of unbleached cotton.

A process is disclosed of forming cellulose fibers. The process includes extruding an aqueous solution of cellulose and a solvent through a first member to form molten filaments. The first member has multiple rows of first and second openings with a nozzle positioned in each of the first openings. At least one of the nozzles in one row is staggered from at least one of the nozzles in an adjacent row. At least a portion of each of the molten filaments is shrouded in a pressurized gas emitted through each of the first openings. Each of the molten filaments is contacted with a liquid to remove some of the solvent and transform each of the molten filaments into a continuous solid fiber. The continuous solid fibers are then collected on a moving surface to form a non-woven cellulose web.

The present invention relates to a fibrilia automobile inner decoration member and a method of manufacturing the same, the steps is that implementing a opening treatment to packaged raw material, mixing jute fiber and polypropylene fiber according to proportionality in a cotton opener, and fiber netting simultaneously; then needling to form a felt by a needle machine, and implementing a sliced sheet treatment to the product after felting; baking and heating the felt directly in a baking oven to bond the surface, the baking temperature is from 180 to 200 DEG C; then cold press molding by a product mold, finally manufacturing a finished product; or preparing the belt into a sheet material to store, then baking and heating the sheet material, and a corresponding product molding according to requirements.

A method for manufacturing a thin high-performance polarizing film includes coating a polyvinyl alcohol type resin on a resin substrate having a thickness of at least 20 μm and then drying the resin to thereby form a polyvinyl alcohol type resin layer, immersing thus produced polyvinyl alcohol type resin layer in a dyeing solution including a dichroic material to thereby have the dichroic material impregnated in the polyvinyl alcohol type resin layer, stretching the polyvinyl alcohol type resin layer having the dichroic material impregnated therein together with the resin substrate in a boric acid solution such that a total stretching ratio of 5.0 or more of the original length is achieved.

The present invention belongs to the field of radiation resisting technology, and is especially one kind of nanometer wave absorbing fiber. The nanometer wave absorbing fiber consists of nanometer wave absorbing particle of 1-100 nm diameter of fine fiber of 30-2000 nm diameter in the weight ratio of 3-35 to 65-97. The nanometer wave absorbing fiber has wide wave absorbing range, powerful wave absorbing capacity, lasting wave absorbing effect and high flexibility. It has wave absorbing function, as well as antistatic, bacteriostasis, biochemical protection and other functions.

The invention relates to a dissolvent for cellulose dissolution through freezing-unfreezing method or direct dissolution method, and process for preparing the regenerated cellulose fibers and films by utilizing the dissolvent, wherein the dissolvent is the water solution of lithium hydroxide and urea whose compositions are 3.0-7.0wt% of lithium hydroxide, 4.0-30.0.0wt% of urea, the rest is water. The water solution of lithium hydroxide and urea can directly dissolve cellulose through freezing-unfreezing method or by pre-cooling the dissolvent in advance to -10 deg. C - -4 deg. C. It can be used to obtain high dissolvability transparent concentrated cellulose solution. By using the concentrated cellulose solution and through 3-5wt% diluted acid water solution coagulation, regeneration, regenerated cellulose films and fibers can be prepared.

The invention relates to element-negative-ion-releasing sterilizing mite-preventing electromagnetic-wave-preventing fire-retarding nano-grade fabric used in vehicles. The invention belongs to the technical field of textile fiber fabric production of vehicle-use nano-grade decorative fabric with functions of refreshing and air-purifying. The fabric is a nano-grade functional healthy textile. The nano-grade fabric provided by the invention is produced form chitosan, which is a natural high polymer extracted from shells of shellfishes, crabs and shrimps; a natural antibiotic humectant SCJ-920; a high-efficiency mite-preventing antibacterial agent SCJ-998; nano-grade negative-ion powder SCJ-900; negative-ion far infrared healthcare slurry 700; a fire retarding finishing agent ATF; an aromatic finishing agent SCM; electromagnetic-wave-preventing ferrites Fe2O3, Fe3O4, and Fe; substances such as TiO2, Al2O3, and ZnO used for providing far infrared radiation; an Ag-embedded nano-TiO2 (AT) antibacterial agent; nano-grade selenium or organic selenium which is rare on earth; organic germanium, Chinese herbal medicines, essential oil, maifanite, tourmaline nano-grade powder and other materials. A mixture of the materials is added to cotton, linen, wool, silk, polyamide fiber, acrylic fiber, terylene or viscose fiber spinning liquid, and the nano-grade fabric is produced through weaving.

The present invention provides one kind of viscose fiber with antibacterial and antifouling tea component, and the viscose fiber contains antiseptic comprising at least one of natural tea pigment, tea polyphenol and catechin. The powder or solution of at least one of natural tea pigment, tea polyphenol and catechin in the amount of 1-10 wt% is added into viscose spinning fluid to result in lasting antibacterial and antifouling functions. The viscose fiber has also the fragrance of tea, dyeing effect and no side effect on human body, and is suitable for use in making underwear, other costumes and bedding.