503 results about "Lyocell" patented technology

The invention belongs to the technical field of textile dyeing methods, and particularly relates to a tension-free anti-fibrillation dyeing method for lyocell blended yarn. The tension-free fibrillating-resistant dyeing method of the lyocell blended yarn comprises the following steps: preparing a bobbin-free loose yarn bundle, namely loosely winding lyocell pure spinning or blended yarn into tension-free yarn bundles of which the weight is 0.5-1.5 kg by adopting an integrated chuck bobbin, and meanwhile, wrapping the tension-free yarn bundles with knitted sock legs; according to the tension-free loose yarn bundle filling, a cross-shaped lifting chain is matched with a yarn bundle grate, staggered filling shaped like a Chinese character'pin 'is achieved, and the loading rate ranges from 90% to 120%. The tension-free one-bath dyeing / cross-linking comprises the following steps: pre-treating the filled tension-free loose yarn bundle, performing dyeing and cross-linking through a one-bath two-step method, and finally performing soaping, hot water washing, color fixation / softening one-bath treatment and radio frequency drying. According to the tension-free antifibrillating dyeing method for the lyocell blended yarn, dyeing is uniform, the color difference is small, and the percent of pass is increased.

The invention relates to the field of fiber production and quality prediction, in particular to an intelligent production scheduling and quality prediction method and system for lyocell fibers, and the method comprises the following steps: generating a batching rule table of the lyocell fibers by using a central batching method according to the polymerization degree requirement and batching principle of the lyocell fibers, generating an inventory table in combination with an inventory list of the pulp raw materials; a production plan is made based on the inventory table, so that a stock solution workshop worker prepares the Lyocell fiber pulp porridge according to the production plan; and constructing a relation model of the raw material attributes, the process parameters and the quality of the pulp porridge by using the two-stage quality prediction model to realize quality prediction of the Lyocell fiber pulp porridge. According to the method, intelligent production scheduling of the lyocell fibers can be realized based on a central batching method and inventory data, whole-course tracking from raw materials to swelling products is realized, then the quality prediction of the lyocell fiber pulp porridge is realized by using the two-stage quality prediction model, and the quality prediction effect of the lyocell pulp porridge is improved.

The invention relates to the technical field of fiber production process simulation modeling, in particular to a Lyocell fiber spinning pulp porridge process simulation and quality prediction method and system.The method comprises the following steps that a simulation system is used for simulating the swelling process of cellulose in an NMMO solvent, and multiple sets of input and output data pairs are generated to construct a data set; a physical model of a simulation system is introduced into the gradient boosting tree algorithm to serve as regularization constraint, and an improved gradient boosting tree algorithm is obtained; and training an improved gradient boosting tree algorithm by using the data set to predict the quality of the Lyocell fiber spinning pulp porridge. According to the method, a slurry porridge quality prediction scheme based on simulation data and the improved gradient boosting tree algorithm is put forward for the first time, the slurry porridge research and development time and cost are greatly reduced, the improved gradient boosting tree algorithm integrates a physical model of a simulation system into a model training process by adding a physical constraint regularization item into a loss function, and the development efficiency of the slurry porridge is improved. The scientificity of a prediction result is enhanced, and the reliability of industrial application of the model is improved.

A preparation method of the blended modified antifibrillated lyocell fiber comprises three steps as follows: S1, a fibroin raw material and a cellulose raw material are dissolved in different NMMO / water mixed solvents respectively, and a fibroin solution and a cellulose solution are obtained; s2, transferring the fibroin solution and the cellulose solution into a reaction kettle, adding a modifier, vacuumizing to remove oxygen, heating to 50-85 DEG C, and stirring to react to obtain a composite spinning solution; the modifier is a small molecular compound containing an epoxy group or an oxygen-containing heterocyclic ring; s3, the composite spinning solution is extruded through a spinneret plate, fiber forming is conducted through a coagulating bath, drafting and winding are conducted, and the blending modified antifibrillated lyocell fiber is prepared. According to the invention, through in-situ modification of the lyocell fiber spinning solution, the prepared lyocell fiber has the intrinsic antifibrillation capability, the addition of an after-finishing process for treatment is not needed, meanwhile, the mechanical property of the fiber is improved, and the fiber is endowed with better skin-friendly property and wearing comfort.

The invention discloses sugarcane syrup suitable for lyocell fiber production and a preparation method and system of the sugarcane syrup, and belongs to the technical field of lyocell fiber production. According to the present invention, the sugarcane pulp for lyocell fiber production is prepared sequentially through the first high-concentration alkali treatment, the second low-concentration alkali treatment, the bleaching, the acid washing and the drying, and the processes are matched for use, such that the conditions are milder compared with the traditional pulping and papermaking cooking process and the oxygen delignification, the equipment requirement is low, the production energy consumption is low, and the operation is safe; according to the present invention, the raw material does not need to be crushed, the index of the finally prepared raw material can meet the Lyocell production requirement, the operation process is simple, the industrial application prospect is provided, the production system matched with the method is provided, and the industrial and continuous production of the sugarcane syrup suitable for Lyocell fiber production is achieved.

The invention discloses a lasting aromatic lyocell fiber of a biological enzyme immobilized temperature-sensitive microcapsule and a preparation method of the lasting aromatic lyocell fiber, and relates to the technical field of polyester fabrics. The method comprises the steps that firstly, a temperature-sensitive microcapsule of a three-layer structure is prepared, an inner core contains aromatic substances of lavender essential oil, ambrota ether and rosin glycerin ester, a middle layer enables N-isopropylacrylamide monomers to be polymerized to form PNIPAM temperature-sensitive hydrogel, and a shell is a nanocellulose crystal-polydopamine compound; then spinning by taking the NMMO aqueous solution containing the microcapsules as an inner layer solution and taking the NMMO aqueous solution containing the eucalyptus pulp as an outer layer solution by adopting a coaxial micro-fluidic spinning technology; and finally carrying out crosslinking treatment through a biological enzyme coagulating bath, wherein the coagulating bath contains an NMMO aqueous solution, horse radish peroxidase and a hydrogen peroxide solution with gradient concentration. The aromatic lyocell fiber prepared by the invention has excellent temperature-sensitive aroma release performance and washing fastness, and solves the technical problems that microcapsules in traditional aromatic textiles are easy to break and fall off and aromatic substances are easy to volatilize.

The present invention relates to the technical field of knitted fabrics, in particular to an antibacterial and anti-ultraviolet bio-based lyocell fabric and a preparation method thereof. The fabric comprises a three-layer composite structure connected by bio-based lyocell yarns: an outer layer is formed by weft-knitting a composite yarn formed by nylon-66 fiber and a first functional fiber, wherein the first functional fiber comprises bio-based lyocell fiber, thermochromic zinc oxide particles, nanosilver / graphene hybrid material, a hydrophobic pore switch polymer, and a cross-linking agent; an intermediate layer is formed by weft-knitting a second yarn formed by a second functional fiber, wherein the second functional fiber comprises bio-based lyocell fiber, temperature-sensitive microcapsules, a humidity-expanding gel, and is composed of an acrylic acid / sodium alginate interpenetrating network; a heat-conducting graphene sheet, and other functional additives; and a third functional fiber in the inner layer comprises bio-based lyocell fiber, Janus-type double-sided microcapsules, a porous graphene framework, a phase change material, and other regulators.

The invention discloses a bamboo pulp lyocell fiber production method, which comprises: (1) preparing a bamboo dissolving pulp, loading bamboo chips into a pot, preheating, raising the temperature in the pot to 110-130 DEG C, introducing medium-pressure steam, rapidly raising the temperature in the pot to 160-170 DEG C, injecting a pre-hydrolysis liquid formed by mixing hot water and an acidic catalytic auxiliary agent from the bottom of the pot, and carrying out thermal insulation at a temperature of 165-175 DEG C for 30-120 min; and (2) dissolving NMMO, namely mixing the dissolving pulp prepared in the step (1) with an NMMO aqueous solution, mechanically stirring and uniformly mixing for 10 minutes at 90 DEG C, then carrying out vacuum dehydration, gradually raising the temperature to 105 DEG C from 90 DEG C, starting timing when the temperature is raised to 105 DEG C, and dissolving for 40 minutes. According to the production method and the production equipment of the bamboo pulp lyocell fiber, the pentosan content can be effectively reduced, the reaction uniformity can be improved and the preparation requirements of the bamboo-based lyocell fiber can be met through the specific preparation method and the processes such as steam preheating and temperature rising combined with liquid-phase extraction and prehydrolysis.

The invention provides a preparation method of a lyocell and polyester interwoven fabric, which is characterized in that the preparation method comprises preparation and dyeing and finishing processes of a lyocell polyester fabric, and the dyeing and finishing processes comprise a lyocell anti-fibrillation treatment process, a polyester dyeing process and a lyocell dyeing treatment process; wherein the lyocell anti-fibrillation treatment process comprises the following steps: adding an anti-fibrillation aid KR-6347 according to 1%-4%, then adding anhydrous sodium sulphate, treating for 8-15 minutes, heating to 60-70 DEG C, adding 10-25 g / L sodium carbonate, continuing for 30-50 minutes, then cooling, draining water and cleaning. The lyocell terylene fabric is woven into knitted single jersey through knitting equipment in a yarn matching mode of separating lyocell terylene, separating lyocell and spandex. The fabric structure and the dyeing and finishing process are reasonable, the fibrillation degree of the fabric is greatly reduced through the dyeing and finishing process, the fastness to washing is high, and the breathable effect of the fabric is better under the wet condition after dyeing and finishing.

The invention relates to a preparation method of an insect-proof lyocell fiber, and belongs to a functional fiber preparation method in the chemical field. The invention provides a bio-based microcell barrier packaging solution aiming at three major defects of easy breakage, non-environmental response release and toxicity of a chemical cross-linking agent in the existing microcapsule coating. The pH response type microcapsule is constructed through double-layer alternate self-assembly of chitosan and phytic acid, a compact network barrier is formed by electrostatic crosslinking of positive and negative charges, and the structural stability is enhanced by combining a natural cross-linking agent genipin; in the fiber loading stage, plasma pretreatment is adopted to increase the surface roughness, vacuum negative pressure drives microcapsule permeation, and steam setting promotes anchoring setting. Core innovations include an intelligent release mechanism, washability breakthrough, ecological safety and actually measured performance display. The method solves the problem that the lyocell fiber is difficult to decompose the permethrin in the NMMO solvent system, and has the advantages of efficient protection and environmental friendliness.

Plied yarns and methods of constructing plied yarns from two different yarns, manufactured using different fibers wherein the plied yarns possess enhanced properties. The yarns developed and described herein are plied yarns, rather than, and in direct contrast to intimately blended yarns. Examples of the fibers and / or yarns utilized in forming the yarns of different fibers described herein, include but are not limited to 100% cotton, Modal, and Lyocell. The yarns described herein can be used for various end uses, including but not limited to formation of terry fabric for use in towels, robes, apparel, and the like.

The invention provides a moisture-absorbing and heating polar fleece fabric with high thermal insulation performance and a production process thereof, and relates to the technical field of garment fabrics. According to the moisture-absorbing and heat-emitting polar fleece fabric with the high heat preservation performance and the production technology of the moisture-absorbing and heat-emitting polar fleece fabric, blended yarn is composed of various functional fibers, and the functional fibers comprise, by weight, 25% of wool, 30% of self-heating acrylic fibers, 25% of lyocell fibers and 20% of nylon. According to the invention, the advantages of each fiber are fully played through the component design of the fixed-spinning yarn and the scientific proportion, the defect of a single fiber is overcome, secondly, the static control method effectively reduces the generation of static electricity through the synergistic effect of nylon and lyocell, and finally, the thermal insulation performance and the hand feeling of the fabric are remarkably improved through the application of the two-side napping polar fleece process.

The invention relates to the technical field of textile fabrics, in particular to a moisture-absorption breathable polyester and chinlon composite fiber and a preparation method thereof. The invention relates to a moisture-absorbing breathable polyester and chinlon composite fiber, which is a skin-core composite fiber, takes moisture-conducting polyester fiber as a skin layer, and takes water-absorbing modified chinlon fiber as a core layer, the moisture-conducting polyester fibers are prepared from the following components in parts by weight: 68 to 75 parts of superfine denier polyester filaments, 12 to 16 parts of seaweed extract powder, 4 to 6 parts of lyocell fibers and 5 to 11 parts of a moisture-conducting auxiliary agent; the moisture conducting auxiliary agent comprises cellulose nano fibrils, nano bamboo charcoal powder and sericin. Aiming at the problem that the moisture absorption and air permeability of the existing polyester-nylon composite fiber are difficult to meet higher industrialization requirements, the moisture absorption and air permeability type polyester-nylon composite fiber with high water absorption rate, short drip diffusion time and water evaporation speed is prepared.

The invention relates to a blended yarn and a preparation method thereof, the blended yarn comprises a three-layer composite structure: a surface layer comprises a single-sided single jersey weave woven by 50D-150D supercritical CO2 waterless dyed polyester filament yarn, and the single-sided single jersey weave accounts for 30%-70% of the total mass of the blended yarn; the middle layer comprises lyocell colored spun yarn which is connected through tuck loops, the lyocell colored spun yarn comprises 5wt%-15wt% of black lyocell fibers and 85wt%-95wt% of fibril which are blended, and the surface of the lyocell colored spun yarn is coated with a chitosan / sodium alginate ion cross-linked composite layer; the inner layer comprises looped pile weaves woven by lyocell colored spun yarns, the looped pile weaves are subjected to crosslinking treatment through a CaCl2 solution to form a calcium alginate flame-retardant layer, and the surface resistivity is smaller than or equal to 1 * 10 < 9 > omega.cm. The blended yarn provided by the invention is self-assembled through chitosan / sodium alginate ions, so that flame retardance, antibacterial property and antistatic property are synchronously realized; the water consumption is reduced by supercritical CO2 dyeing, and the fiber strength is protected by low-temperature setting.

The present invention relates to a flame-retardant lyocell fabric and a preparation method thereof, characterized in that the fabric can be prepared by the following method: using melamine and chloropropyl-POSS as main raw materials to react to prepare a substitution product of melamine and chloropropyl-POSS; then, reacting formaldehyde, the substitution product and lyocell fabric to prepare the flame-retardant lyocell fabric. The initial limiting oxygen index of the flame-retardant lyocell fabric prepared by the present invention reaches more than 30%, which belongs to the range of flame-retardant materials; after being washed with water five times, the limiting oxygen index does not decrease significantly and still reaches more than 28%; in addition, after being washed with water five times, the flame retardant performance of the flame-retardant lyocell fabric prepared by the present invention slightly exceeds the flame retardant performance of purchased flame-retardant lyocell fabric.

The invention provides an antibacterial and uvioresistant blend fiber fabric and a preparation method thereof, and belongs to the technical field of fabrics. The preparation method comprises the following steps: intercalating an antibacterial and anti-ultraviolet compound into MgZnFe layered metal oxide, self-assembling and coating microspheres with the compound, dipping nickel salt, calcining in-situ deposited carbon nanotubes, carrying out surface polydopamine modification to obtain modified carbon nanotube deposited microspheres, adhering the modified carbon nanotube deposited microspheres to hydrolyzed cotton fibers, uniformly mixing the hydrolyzed cotton fibers with Cel fibers and bamboo charcoal fibers, and carrying out vacuum drying to obtain the antibacterial and anti-ultraviolet fabric. The preparation method comprises the following steps: processing the raw materials into blended yarns through combing and ring spinning processes, weaving the raw materials into grey cloth by adopting double-sided warp knitting weaves, and carrying out cloth boiling, mercerizing, dyeing, sizing, preshrinking, singeing and wool etching processes to obtain the antibacterial and uvioresistant blended fiber fabric. Cellulase is adopted to hydrolyze cotton fibers, the problem that spinning is prone to breaking is solved, the cotton fibers are blended with the lyocell fibers and the bamboo charcoal fibers, the comfort level of the fabric is improved, the draping sense and the cool sense are good, the fabric cover is smooth and clean, the antibacterial, anti-ultraviolet and anti-static performance and the mechanical strength are good, and wide application prospects are achieved.

The invention discloses a super-soft air layer knitted fabric and a preparation method thereof, relates to the technical field of knitted fabrics, and solves the problems that the existing fabric is poor in softness and insufficient in comfort and durability. The fabric adopts a sixteen-path circulating pattern and is divided into an outer side layer, a middle gap layer, a close-fitting super-soft layer and a connecting layer, and each layer is formed by floating threads, looping and tuck stitches in a synergistic manner; modal fiber yarn and elastic core-spun yarn (spandex core yarn and lyocell fiber) are selected as yarn to be interwoven, and the spandex proportion (3%-10%), the lyocell fineness (0.5 dtex-1. 0 dtex) and the yarn proportion are designed according to functional layer differentiation. The preparation method comprises the steps of weaving, enzyme desizing-enzyme oxygen bleaching pretreatment, one-bath two-step dyeing and super-soft finishing, and hot air setting. Through collaborative optimization of the patterns, the yarns and the process, the outer side layer of the fabric is wear-resistant, the middle layer is breathable, the close-fitting layer is super-soft and high-elastic, and the fabric is stable in softness after being washed and meets the requirements of high-end close-fitting textile products.

The invention relates to the technical field of western-style clothes processing, in particular to an anti-wrinkle western-style clothes fabric and a processing technology thereof.The anti-wrinkle western-style clothes fabric is prepared by finishing base cloth through finishing liquid, the base cloth is wool blended fabric, and the wool blended fabric comprises wool, polyester fibers, lyocell fibers, spandex and conductive fibers; the finishing liquid is prepared from the following raw materials in parts by weight: 1 to 4 parts of polyoxyethylene sorbitan monooleate, 0.1 to 1 part of cocamidopropyl betaine, 2 to 6 parts of a fiber protecting agent, 80 to 120 parts of carboxyl-terminated hyperbranched polyester, 40 to 60 parts of butanetetracarboxylic acid, 30 to 50 parts of poloxamer, 0.1 to 2 parts of a silane coupling agent, 2 to 4 parts of an aziridine cross-linking agent and 900 to 1100 parts of water; the fabric has the advantage that the crease resistance of the business suit fabric is improved.

Disclosed in the present invention are a preparation method for a lyocell bamboo fiber, and a lyocell bamboo fiber. The preparation method comprises the preparation steps of: (1) directly mixing a pulp containing at least one type of bamboo pulp with an NMMO aqueous solution containing a modifier so as to obtain a pulp paste, wherein the modifier at least contains two active groups; and (2) dehydrating and dissolving the pulp paste to obtain a spinning solution, wherein the relaxation time spectrum of the spinning solution has a bimodal distribution, and spinning the spinning solution by means of a spinning device, followed by washing with water, oiling and drying, so as to obtain a lyocell bamboo fiber. The pulp of the present invention is directly mixed with the NMMO aqueous solution containing the modifier so as to form the pulp paste, without subjecting the pulp paste to other treatments, thereby fully retaining antimicrobial components in the pulp; the pulp paste can be dehydrated and dissolved at a low temperature to obtain the spinning solution, thus avoiding the degradation of the spinning solution caused by an overly high temperature; moreover, the relaxation time spectrum of the spinning solution has a bimodal distribution, that is, different stress distributions are present within the fiber during cellulose molding, thereby being conducive to the retention of active antimicrobial small molecules within the bamboo pulp.

The invention belongs to the technical field of textiles, and particularly relates to a lyocell yarn surface antigen fibrillation treatment method. Preparing a working solution from an anionic fibrillating auxiliary agent, sodium carbonate and water; after being unwound, the yarns pass through a reaction tank of the single-yarn continuous antifibrillation treatment device, the surfaces of the yarns react with the working solution, and the yarns are wound into loose cone yarns by a digital winding device after being extruded by an extrusion device and dried by a rotating cage in a rotating manner; fixing the color of the processed slack cone yarns by using a steamer; neutralizing, washing and drying the color-fixed cone yarn by using a cone yarn dyeing machine; the instantaneous surface adsorption of the working solution is realized by strictly controlling the time for the yarns to pass through the reaction tank within 0.1 second. According to the invention, the auxiliary agent only reacts at the outer layer fiber of the yarn to form a firm protective shell, and the core layer fiber is kept in an unreacted natural state, so that the flexibility characteristic of the lyocell fiber core is completely retained.

The utility model belongs to the field of lyocell fibers, and particularly relates to a preparation system of lyocell cross-linked short fibers. Comprising; the spraying module is used for spraying a cross-linking agent to the lyocell short fibers; the heating module is mounted at the rear end of the spraying module, and the heating module is used for heating and crosslinking the Lyocell short fibers; and the conveying module is used for conveying the Lyocell short fibers, so that the Lyocell short fibers sequentially pass through the spraying module and the heating module.

The application relates to the field of fabrics, in particular to a flame-retardant non-fusible non-shrinking fabric as well as a preparation method and application thereof. The flame-retardant heat-insulating fabric contains modacrylic, bamboo lyocell, flame-retardant polyester and polyamide; the addition amount of the modacrylic is 45-60% of the total weight of the flame-retardant heat-insulating fabric. The application can realize good flame-retardant effect by only relying on the proportioning control among several different fiber materials, and does not need to use complex treatment means. In addition to the flame-retardant effect, the fabric in the application also has excellent comfort, durability and dyeing performance.

The invention discloses an antibacterial modified lyocell fiber fabric and a preparation method thereof, and the preparation method comprises the following steps: cutting a lyocell fiber fabric into a certain size, and placing the cut lyocell fiber fabric in a eutectic solvent for pretreatment; and after the pretreatment is finished, adding an antibacterial agent into the deep-eutectic solvent, then adding a coupling agent, carrying out graft modification, after the reaction is finished, taking out, washing with deionized water, and finally drying to obtain the antibacterial modified lyocell fiber fabric. According to the method, the lyocell fiber fabric is used as a reaction raw material, polyhexamethylene guanidine hydrochloride is used as an antibacterial agent, glutaraldehyde is used as a coupling agent, a choline chloride-urea eutectic solvent is used as a pretreatment solvent and a subsequent reaction medium, the lyocell fiber fabric is pretreated in the eutectic solvent, the fiber surface is damaged, more active hydroxyl groups are exposed, and the surface of the fiber is subjected to surface modification; and adding a coupling agent and an antibacterial agent, so that the polyhexamethylene guanidine hydrochloride is grafted on the lyocell fiber fabric, and the antibacterial lyocell fiber fabric which is excellent in antibacterial performance, long-acting and washable is obtained.

An aerosol-generating article (10)(100)(1000) comprises: an aerosol-generating substrate (12)(112)(1004); a downstream element (42)(150)(1008) provided downstream of the aerosol-generating substrate (12)(112)(1004) and in axial alignment with the aerosol-generating substrate, the downstream element comprising a cellulosic filtration material. The fibrous material comprises a plurality of regenerated cellulose fibres selected from one or more of viscose fibres, modal fibres, Lyocell fibres and viscose rayon fibres; or a plurality of natural fibres selected from one or more of flax fibres, hemp fibres, jute fibres, kenaf fibres, ramie fibres, abaca fibres, phormium fibres, sisal fibres, coir fibres, cotton fibres, and kapok fibres. The cellulosic fibrous material further comprises an additive coating applied to the plurality of regenerated cellulose or natural fibres, the additive coating comprising at least 5 percent by weight of exogenous lignin on a dry weight basis.

This application relates to a low-alkali wet mercerizing treatment method for improving the dimensional stability of Tencel fabrics, comprising the following steps: S1, cold piling desizing and refining treatment; S2, low-alkali wet mercerizing treatment; S3, washing and drying; S4, dyeing. The desizing rate, wicking effect, dimensional stability, strength, and various fastness properties of the Tencel fabrics obtained by this treatment method are effectively improved.

The invention provides a treatment method and a treatment device for lyocell fiber production wastewater. According to the treatment method, by adopting an advanced pretreatment technology and screening proper process parameters, after wastewater components are subjected to ring opening and chain scission through physical and chemical reactions, the biodegradability of the wastewater is improved, the salinity of the wastewater is reduced, the water quality reaches the environmental conditions suitable for growth of microorganisms, and then subsequent biochemical treatment and deep treatment are utilized to achieve the purpose of improving the biodegradability of the wastewater. The wastewater index is higher than the national standard first-level A direct discharge standard, the treated discharged wastewater can be further recycled by 30%, water waste is avoided, water resources are saved, the aims of saving cost, reducing input cost and paying attention to product quality are met for producers, and the Lyocell fiber sewage treatment technology has wide application and popularization value as a more professional Lyocell fiber sewage treatment technology.

The present invention belongs to the technical field of lyocell fibers, and specifically relates to high-enthalpy phase-change temperature-regulating lyocell fibers and a preparation method thereof. The preparation method of the high-enthalpy phase-change temperature-regulating lyocell fibers comprises the following steps: using a mixture of n-octadecane, n-nonadecane, and n-heneicosane as a capsule core material, polyurethane as an inner capsule wall, and a product of gelatin and gum arabic as an outer capsule wall to prepare phase-change temperature-regulating microcapsules; adding cellulose pulp to a cellulose solvent to prepare a cellulose spinning solution; adding phase-change temperature-regulating microcapsules to an aqueous solution of a low-concentration cellulose solvent to prepare a phase-change temperature-regulating microcapsule dispersion system; and mixing the cellulose spinning solution and the phase-change temperature-regulating microcapsule dispersion system to prepare high-enthalpy phase-change temperature-regulating lyocell fibers. The high-enthalpy phase-change temperature-regulating lyocell fibers prepared by the present invention have good dispersibility and compatibility of the phase-change temperature-regulating microcapsules contained therein in the fibers, and have good phase-change temperature-regulating function and toughness.

The application discloses a heat recovery system applied to a lyocell fiber production process and relates to the technical field of lyocell fiber production. The system comprises a cyclone plate tower, an inner circulation water tank and a heat exchanger, and a spraying assembly arranged at the top of the cyclone plate tower. The inner circulation water tank is used for collecting high-temperature inner circulation water sprayed by the spraying assembly and subjected to heat exchange with drying tail gas flowing into the bottom of the cyclone plate tower, and the high-temperature inner circulation water is transmitted to the heat exchanger. The heat exchanger is used for cooling the high-temperature inner circulation water by using collected steam condensate water generated in the lyocell fiber production process, and the steam condensate water after being heated is introduced into a raw material end of a lyocell fiber production line, and the inner circulation water after being cooled is introduced into the spraying assembly. The system realizes efficient recovery of waste heat of the drying tail gas, builds a closed loop circulation system of the steam condensate water, reduces steam consumption in the lyocell fiber production, and solves double energy waste in the drying link of the lyocell fiber.

A stitchbonded fabric having one or more nonwoven sheet consisting of cellulosic, preferably lyocell, fibers oriented multidirectionally within the sheet, and a pattern of stitches of shrinkable yarns that, after shrink-activating, gathers the fabric into a gathered stitchbonded fabric. The stitching has yarn overlaps over a technical front surface and yarn underlaps over a technical back surface of the nonwoven sheet. The cellulosic fibers provide a ratio of tensile strength in the machine:cross directions of the nonwoven sheet of 3:1 or less. The stitchbonded fabric unit contains 40% to 80% by weight cellulosic fibers, and 20% to 60% by weight shrinkable yarns, and has an MD:CD tensile strength ratio of 4:1 or less. The nonwoven cellulosic sheet and the gathered stitchbonded fabric therefrom contain a de minimis or no amount of binding fibers or adhesive material, to avoid interfering with the needles of the yarn stitching of the fabric unit.

The invention relates to a low-count Lyocell / bamboo antibacterial flame-retardant blended yarn and a preparation method thereof, and belongs to the technical field of spinning processing. A cotton blending process; a cotton opening process; a carding process; a primary drawing process; a secondary drawing process; roving process; a spinning procedure; a flame-retardant finishing process; and a spooling process. By means of the process, resultant yarn processing of the high-quality Lyocell / bamboo blended yarn with the fineness ranging from 10 S to 20 S can be achieved, the resultant yarn quality is stable, and the Lyocell / bamboo blended yarn is suitable for household textiles, curtains, carpets and the like, has excellent antibacterial and flame-retardant functions, is good in hand feeling and has a certain safety protection function, the additional value of Lyocell products is increased, and the application field of the Lyocell products is expanded.