2272results about "Melt spinning methods" patented technology

The application pertains to an artificial turf monofilament comprising a sheath comprising a virgin polyolefin polymer, a core comprising recycled polyolefin polymer obtained from recycled artificial turf. Furthermore, the application pertains to an artificial turf comprising said monofilament as well as a process for manufacturing said monofilament.

The invention discloses a wool type fiber spinning process precise control system and method, and relates to the technical field of fiber materials.According to the method, a perturbation gas injection groove is introduced into a spinning hole side structure, and gas injection parameters are collected in real time in combination with an MEMS micro-thermal film flow meter, a binocular infrared imager and other equipment; standardized preprocessing and feature extraction are carried out on gas injection data through a central control server, the directional deflection Odev can be accurately calculated, dynamic comparison and evaluation are carried out according to a deflection interval threshold value, and therefore the active regulation and control capacity on the initial deflection angle and the curling direction of fibers is achieved. Different from a traditional spinning process that fiber deflection completely depends on a mold, temperature or subsequent drafting disturbance, the method can construct a stable disturbance induction force field at the moment of fiber ejection, it is ensured that a fiber nascent path has consistency, directivity and predictability, and controllable guide conditions are provided for subsequent wool type structure construction.

A nonwoven fabric comprises a first surface, a second surface, and a visually discernible pattern on at least one of the first and second surfaces. The visually discernible pattern has a regular, repeating pattern of three-dimensional features. Each of the three-dimensional features define a microzone comprising a first region and a second region. The first and second regions having a difference in values for an intensive property. The first surface has a TS7 value in the range of about 1 dB V2 rms to about 15 dB V2 rms. The second surface has a TS7 value in the range of about 1 dB V2 rms to about 15 dB V2 rms. A ratio of the TS7 value of the first surface to the TS7 value of the second surface is in the range of about 1 to about 3.

The invention discloses an ultra-high molecular weight polyethylene fiber melt spinning method which comprises the following steps: step 1, mixing ultra-high molecular weight polyethylene resin with polyethylene wax and high-density polyethylene to form a composition; 2, melting the composition at a high temperature to form a melt, carrying out melt spinning, and carrying out nozzle stretching and air cooling to obtain nascent fibers; and step 3, carrying out hot stretching and heat setting on the nascent fiber to obtain the final ultra-high molecular weight polyethylene fiber. By adopting the technical scheme, the melt flowability of the ultra-high molecular weight polyethylene can be greatly improved by the high-density polyethylene and the polyethylene wax, so that the ultra-high molecular weight polyethylene resin can be smoothly subjected to melt spinning. Meanwhile, in the hot stretching process, the polyethylene wax can participate in the crystallization process of the ultra-high molecular weight polyethylene resin and the high-density polyethylene, and finally the mechanical property of the ultra-high molecular weight polyethylene fiber can be well maintained.

A preparation method for a flame-retardant and anti-dripping polyester fiber. A flame-retardant and anti-dripping polyester fiber is obtained by mixing polyester, a flame-retardant polyester masterbatch (A or B) and an anti-dripping agent in the mass ratio of 65-75:15-25:2-20 and then performing melt spinning; the preparation process of the flame-retardant polyester masterbatch A comprises: in the polyester preparation process, adding a phosphorus-based flame retardant into a system in an esterification stage, and adding a nitrogen-based flame retardant and a silicon-based flame retardant into the system in a polycondensation stage to obtain the flame-retardant polyester masterbatch A; and the preparation process of the flame-retardant polyester masterbatch B comprises: carrying out melt blending on polyester and IFR to obtain the flame-retardant polyester masterbatch B. The flame-retardant and anti-dripping polyester fiber prepared by means of the technical solution has good flame retardance, anti-dripping properties and spinnability, and a fiber product prepared from a fiber having a special-shaped cross section also has good comfort.

The invention relates to the field of regenerated fiber production equipment manufacturing and process integration, and discloses a modular intelligent continuous regenerated fiber production line which comprises a sorting and cleaning module, a melt extrusion module, an impurity filtering module, a granulation module, a decoloration module, a solid phase polycondensation tackifying module and a melt spinning module. The self-adaptive material distribution device is used for realizing material connection among the modules; the automatic control system is used for realizing collaborative operation of all the modules; wherein the solid phase polycondensation tackifying module is provided with an intelligent control unit for dynamically optimizing the operation of the solid phase polycondensation tackifying module. Compared with the prior art that each process is relatively independent and depends on manual scheduling or simple linkage, the scheme effectively overcomes the common problems of unsmooth material conveying, unbalanced matching between modules and insufficient automation degree in the traditional regeneration process, and remarkably improves the production continuity and the resource utilization rate.

The invention relates to a production process of a high-elasticity heat-resistant polyester yarn, which comprises the following steps: firstly, selecting high-molecular-weight polyethylene glycol terephthalate, adding 1-3% of nano filler and 5-10% of functional copolymer, and drying at 150 DEG C for 4-6 hours to improve the stability and processability of the material; secondly, melt extrusion is conducted at 280-290 DEG C, spinning is conducted through a multi-section temperature control spinning head, and the fiber cooling uniformity is effectively controlled. Then, two times of drafting and a heat setting process are adopted, the orientation degree of a molecular chain is improved in one time of drafting, and low-temperature plasma treatment is combined to optimize the surface activity and the setting effect of the fibers. In the secondary drafting, the fiber deformation is finely adjusted at low temperature, the thermal damage is reduced, the elasticity is improved, and finally, xylanase treatment and ultraviolet curing are combined, so that the softness, the skin-friendly property and the weather resistance of the fiber are remarkably improved.

The invention relates to the technical field of antibacterial and antifouling fabrics, provides a preparation method of an antibacterial and antifouling fabric, and solves the problem of poor fabric durability caused by single functional component and lack of physical protection in the prior art. The preparation method comprises the following steps: S1, preparing MOFs loaded antibacterial fibers: blending a metal organic framework antibacterial composite nanomaterial and a polymer matrix material, and carrying out melt spinning to prepare the MOFs loaded antibacterial fibers; s2, constructing a self-cleaning functional coating: dispersing the fluorinated nanoparticles and a polymer adhesive in a solvent to prepare a self-cleaning coating solution; s2, performing surface activation treatment on the MOFs-loaded antibacterial fiber obtained in the step S1, soaking the MOFs-loaded antibacterial fiber in the self-cleaning coating liquid, and performing pulling and curing to form a bionic micro-nano structure coating on the surface of the MOFs-loaded antibacterial fiber so as to obtain a functional composite fiber; s3, spinning forming: taking the functional composite fibers obtained in the step S2 as warp yarns and / or weft yarns, and weaving to obtain the antibacterial and antifouling fabric.

The invention relates to the technical field of multi-layer composite fabrics, and discloses a moisture-absorption antibacterial layered composite fabric and a preparation method thereof. The preparation method comprises the following steps: carrying out melt spinning on polyamide and an antibacterial agent to prepare the antibacterial polyamide fiber; blending antibacterial polyamide fibers, cotton fibers and special-shaped section polyamide fibers, and knitting to obtain a lining fabric crude product; blending the antibacterial polyamide fiber and the modified cotton fiber, and knitting to obtain a surface fabric crude product; respectively padding the surface fabric crude product and the lining fabric crude product in the finishing liquid to obtain a surface fabric and a lining fabric, and compounding the surface fabric and the lining fabric to obtain the moisture-absorbing antibacterial layered composite fabric. The composite fabric has excellent antibacterial performance and good moisture absorption performance.

The invention discloses a preparation method of lead-free double perovskite nanofibers capable of efficiently photocatalytic reduction of CO2 at room temperature. The method comprises the following steps: fully dissolving cesium bromide, silver bromide and bismuth bromide in an organic solvent to obtain a precursor solution, adding a ligand and a polymer into the precursor solution, fully magnetically stirring to obtain a spinning solution, and preparing a nanofiber product by utilizing an airflow spinning technology. The airflow spinning technology is creatively adopted to enable the lead-free double perovskite quantum to grow on the nanofiber, a large number of catalytic reaction sites are provided, and the catalytic activity is remarkably improved. According to the method, large-scale preparation of the lead-free double perovskite nanofibers is achieved at the room temperature, controllability and high stability are achieved, operation is easy, the method is suitable for the field of photocatalytic CO2 conversion and the like, and a new thought is provided for sustainable energy development.

The invention discloses a warm-keeping fabric containing hollow polyester fibers as well as a preparation method and application thereof, and relates to the field of fabrics. When the thermal fabric containing the hollow polyester fibers is prepared, hollow mesoporous nano cerium oxide is selectively protected by molten paraffin and then reacts with chloromethyl trimethoxy silane and isocyanuric acid in sequence, paraffin is dissolved by chloroform, and then N-(3-trimethoxysilylpropyl) pyrrole is grafted to obtain modified hollow mesoporous nano cerium oxide; reacting terephthalic acid, a multifunctional monomer and ethylene glycol to obtain modified polyester particles; the preparation method comprises the following steps: granulating modified polyester, uniformly mixing modified hollow mesoporous nano cerium oxide and polyethylene glycol 10000, performing melt spinning, treating with a pyrrole solution, twisting, spinning and weaving, and treating with a sodium hypochlorite mixed solution to obtain the thermal fabric containing the hollow polyester fibers. The warm-keeping fabric containing the hollow polyester fibers prepared by the invention has excellent warm-keeping, antibacterial, anti-aging, flame-retardant, antistatic and mechanical properties.

The invention discloses a silicon dioxide aerogel chinlon 6 composite fiber and a preparation method thereof, and belongs to the technical field of chemical fibers. The preparation method comprises the following steps: firstly, carrying out surface modification on silicon dioxide aerogel by adopting an alcohol ester method to obtain modified silicon dioxide aerogel powder with improved hydrophobicity, and then uniformly mixing and blending PA6 slices and the silicon dioxide aerogel powder to prepare the silicon dioxide aerogel chinlon 6 composite master batch. And finally, mixing and extruding the silicon dioxide aerogel and chinlon 6 composite master batch and PA6 slices, and carrying out melt spinning to finally prepare the silicon dioxide aerogel and chinlon 6 composite fiber. Hydrophobically modified silicon dioxide aerogel is uniformly dispersed in a chinlon 6 matrix, so that the heat conductivity coefficient of the silicon dioxide aerogel and chinlon 6 composite fiber is remarkably reduced, and the prepared silicon dioxide aerogel and chinlon 6 composite fiber has good light weight, flexibility and wear resistance while keeping high heat retention property; the bottleneck of poor mechanical property of the traditional aerogel composite material is broken through.

The invention relates to polyethylene resin for melt spinning as well as preparation and application thereof, a preparation method of the polyethylene resin comprises the following steps: (1) adding raw materials including a main catalyst, a cocatalyst, a diluent and ethylene into a reactor, and carrying out polymerization reaction to obtain a slurry blend containing the resin and the diluent; (2) carrying out washing treatment on the slurry-like blend through a purified diluent in the discharging process, and then carrying out solid-liquid separation; and (3) drying the resin subjected to solid-liquid separation to obtain a polyethylene resin product. Compared with the prior art, the polyethylene resin prepared by the invention has the characteristics of low crystal point and difficulty in wire breakage during subsequent spinning, and can be directly stretched and oriented in a hot channel at an outlet of a spinneret plate to obtain a final fiber product, or the fiber product can be further obtained through multi-stage stretching of a hot roller on the basis; the strength of a fiber product can be higher than that of a fiber product of 15cN / dtex, and the melt spinning efficiency of the high-performance fiber is further improved.

The invention provides a multifunctional passive cooling optical metamaterial fiber, yarn and fabric and a preparation method thereof. The passive cooling optical metamaterial fiber is composed of high-refractive-index inorganic micro-nano particles and / or a micro-nano functional material and a polymer substrate material. Wherein wavelength / sub-wavelength scale micro-nano particles are uniformly distributed in a substrate material as a random scattering medium to form a random optical metamaterial system, and reflection enhancement of the optical metamaterial fabric in a solar spectrum band is realized by utilizing a multiple Mie resonance collective effect. According to the passive cooling optical metamaterial fiber, a circular structure, a skin-core structure and the like are prepared through melt spinning, high-refractive-index inorganic micro-nano particles are added into a skin layer and used for sunlight band wide spectrum regulation and control, and a micro-nano functional material is added into a core layer, so that multiple functions are effectively achieved.

The invention relates to a multistage composite micro-nano particle with wide spectrum regulation and control performance and preparation and application thereof, the product comprises an inner core particle, an intermediate layer particle and an outer layer organic matter, the intermediate layer particle uniformly grows on the surface of the inner core particle and is coated by the outer layer organic matter; the preparation method comprises the following steps: firstly, pretreating the surfaces of inner core particles, then adding the pretreated inner core particles into a silane coupling agent solution for modification treatment to obtain silane coupling agent modified inner core particles, and finally forming intermediate layer nano-particles on the surfaces of the inner core particles by adopting a sol-gel method, a coprecipitation method, a hydrothermal method or an impregnation method to obtain the product. During application, the product and polymer master batches are uniformly mixed and dried, and then the fiber with the radiation refrigeration characteristic is prepared through a melt spinning process. The method is simple, and the product has a good radiation refrigeration effect; during application, the prepared fiber with the radiation refrigeration characteristic has the effects of dual regulation and control of solar radiation resistance and human body radiation refrigeration.

The invention relates to the technical field of chinlon industrial yarns, and discloses a preparation method of a high-strength and high-toughness chinlon industrial yarn, which comprises the following steps: (1) preparing raw materials; (2) mixing the materials; (3) melt spinning; (4) stretching and heat treatment; (5) fiber surface modification; according to the invention, by fusing the advantages of high crystallization speed of nylon 6 and high melting point and high strength of nylon 66, a matrix material with good processing fluidity is formed, and the strength and fatigue cycle resistance of the chinlon industrial fiber are obviously improved. By introducing the maleic anhydride grafting agent, polar groups can be introduced among molecular chains through grafting reaction, so that the hydrogen bond density and crystallinity are remarkably improved, the molecular chains are arranged more regularly, and the tensile strength and heat resistance of the material are improved. The sea-island structure of the polyether ester elastomer effectively absorbs impact energy, so that the elongation at break is greater than or equal to 28%; the nano silicon dioxide inhibits crack propagation, and the service life of the material is remarkably prolonged.

The present invention relates to a method for manufacturing a nonwoven having nanoporous fibers. The method comprises at least the following steps: - providing (10) a spinning solution having a fiber starting material, in particular a polymer, and having a solvent, - producing (12) raw fibers (20) from the spinning solution, in particular by extruding the spinning solution through capillaries; - accelerating (14) the produced raw fibers (20) by means of an acceleration fluid flow; - depositing (16) the accelerated raw fibers (20) as a moist nonwoven precursor (26) with a fluid; - drying (18) the nonwoven precursor (26) while avoiding a state of the liquid of the moist nonwoven precursor (26) in which the liquid has a capillarity, in order to produce the nonwoven having nanoporous fibers. The invention also relates to a nonwoven and to a manufacturing system

The invention relates to the technical field of knitted fabrics, in particular to a high-strength wear-resistant anti-snagging functional dry knitted fabric for exercise training and a production process thereof, and the production process comprises the following steps: weighing the following raw materials in parts by weight: 30-40 parts of polyester fibers, 20-30 parts of aramid fibers, 5-10 parts of jade fibers and 5-10 parts of polyamide fibers; polyester fibers, aramid fibers, jade fibers and polyamide fibers are subjected to relaxation treatment and then subjected to a drawing procedure, and the mixed roving is obtained. According to the knitted fabric for exercise training, polyester fibers, aramid fibers, jade fibers and polyamide fibers are blended and blended to prepare mixed roving, meanwhile, the mixed roving is infiltrated and improved through infiltrating liquid, finally, the mixed roving is matched with modified polyester filaments to be subjected to circular knitting improvement, and the obtained knitted fabric has the advantages of being excellent in wear resistance, mechanical strength performance and snagging performance, good in elasticity and good in elasticity. And the knitted fabric has remarkable moisture absorption, dryness and dryness and washing resistance, and the comprehensive coordination of the product is excellent.

The invention relates to a herbal deodorizing master batch, a fiber, a fabric and a preparation method thereof. The master batch comprises the following components in parts by mass: 60-75 parts of polyester PET, 0.5-1 part of an antioxidant, 0.5-1 part of a dispersant and 25-40 parts of a herbal deodorizing extract, the herbal deodorizing extract comprises one or more of scandent hop extract, mottled bamboo extract, lichen extract and amblystegium giganteum extract; the antioxidant is tea polyphenol, and the dispersing agent is talcum powder. The master batch is prepared by melt blending extrusion granulation, and the fiber is prepared by melt spinning of the master batch and polyester. The deodorization component in the master batch prepared by the invention can still keep activity after being subjected to polymer melting high-temperature treatment, and can enter the fabric in a melt spinning manner, so that the fabric has deodorization property.

The invention provides a polyarylester nanofiber and a preparation method thereof, and the preparation method comprises the following steps: firstly, carrying out acetylation reaction on 4-hydroxybenzoic acid (HBA) and 6-hydroxy-2-naphthoic acid (HNA) to obtain acetylated HBA and acetylated HNA, and then carrying out copolymerization on acetylated HBA and acetylated HNA and 4-hydroxybutyric acid (GHB) to obtain HBA / GSB / HNA copolymerized arylester granules B; the preparation method comprises the following steps: carrying out blending spinning on granules B and HBA / HNA copolymerized aromatic ester granules A obtained by copolymerizing acetylated HBA and acetylated HNA in the prior art, putting the obtained blended polyarylate fibers into an organic solvent containing a strong base, carrying out chemical etching and deprotonation, carrying out disassembly from top to bottom to obtain a polyarylate nanofiber suspension, and finally carrying out suction filtration and drying to obtain the polyarylate nanofibers. According to the preparation method disclosed by the invention, the blended polyarylester fiber containing an aliphatic chain is subjected to etching and deprotonation treatment through strong base to disassemble the polyarylester nanofiber, and a certain amount of-CH2-structure is introduced into a main chain, so that disassembly preparation of the nanofiber is facilitated, and the polyarylester nanofiber with uniform diameter and length and controllable length-diameter ratio is obtained.

The invention provides a superfine denier profiled polyester staple fiber and a preparation method thereof.The preparation method includes the steps of raw material pretreatment, melt spinning, nascent filament treatment, heat setting and curling, oiling and cutting off and the like, polyester chips have high intrinsic viscosity and melting point, and under the action of six-zone temperature control, a high-hole-density spinneret plate and a high draft multiple, the polyester chips are subjected to melt spinning, so that the polyester chips are prepared into the superfine denier profiled polyester staple fiber. The superfine, special-shaped and hollow polyester staple fibers are prepared. The obtained polyester staple fiber has good breaking strength, rebound resilience and a low-defect structure, the bulkiness, flexibility and structural consistency of the fiber are remarkably improved, the environment and process limitation of a traditional sea-island fiber alkali stripping method is broken through, and the polyester staple fiber is suitable for the fields of high-end filling, plush imitation, non-woven materials and the like.

The invention discloses a light-weight moisture-conducting functional fabric and a preparation method thereof, and relates to the technical field of textile, the light-weight moisture-conducting functional fabric comprises an inner layer and an outer layer, the inner layer is obtained by blending polyester fibers and nylon special-shaped section fibers, and the outer layer is obtained by blending modified polypropylene fibers and hollow polyester fibers; the modified polypropylene fiber is obtained by mixing polypropylene slices and modified jade powder, melting, spinning and stretching; the prepared fabric has the light weight characteristic and the one-way moisture guiding capacity, sweat can be rapidly discharged out of the body, dry and comfortable isolation between the skin and the outside is achieved, and multiple health protection functions such as lasting antibiosis, efficient ultraviolet resistance and contact cool feeling are organically integrated.

The invention relates to a method for preparing a coarse denier non-crimp dumbbell-shaped full-dull polyester staple fiber, wherein the full-dull polyester slice is dried, melted by a screw extruder, spun by a dumbbell-shaped special-shaped hole spinneret, cooled by short-distance blowing with a ring blow tube, wound, and dropped into a barrel to obtain a raw fiber, and the raw fiber is subjected to the steps of post-spinning bundling, first-stage oil bath drawing, second-stage steam drawing, tense heat setting, stacking and oiling, and cutting to obtain a coarse denier non-crimp dumbbell-shaped full-dull polyester staple fiber; the dumbbell-shaped special-shaped hole spinneret is The diameter is 220mm, the dumbbell-shaped hole length is 2.2±0.025mm, the dumbbell-shaped hole points to the center of the spinneret at 15°, the number of holes is 208, each circle has 52 holes, a total of 4 circles, the circle radial center distance is 9mm, the shortest distance from the spinneret surface to the top row of air holes of the ring blowing tube is 30mm, the wind speed is 1.7-1.8m / s; the winding speed is 1050-1150m / min; the nozzle stretching multiple is 160-190 times. The present invention effectively solves the problem that the coarse denier non-curled dumbbell-shaped full-dull polyester staple fiber has high defects and is dispersed.

The invention relates to the technical field of spunbond non-woven fabric manufacturing, in particular to a low-cost recyclable spunbond non-woven fabric manufacturing method capable of replacing traditional kraft paper, and the method comprises the steps of raw material preparation, melt extrusion, spinning web forming, hot-press shaping, cooling and trimming, post-processing, coiling and forming and the like. Raw materials comprise polypropylene particles, degradable master batches and recycled spunbond non-woven fabric fragments, the recycled fragments are subjected to surface modification treatment, and the degradable master batches contain polylactic acid, a starch-based degradation agent and other components. The non-woven fabric is quantified to 80-120 g / m < 2 > by optimizing processes such as a barrier type screw, infrared preheating and laser trimming and cooperating with water-repellent and antistatic post-treatment, the mechanical properties such as tensile strength, tearing strength and folding resistance are superior to those of traditional kraft paper, the non-woven fabric can be recycled for at least three times, and the degradation period is controllable; the method realizes closed-loop utilization of raw materials, reduces cost and energy consumption, expands application in the fields of packaging, agriculture and the like, and has remarkable economic and environmental benefits.

The invention relates to a functional fiber, in particular to a graphene multifunctional fiber which is prepared by blending a fiber main body material and a graphene functional master batch, the weight ratio of the fiber main body material is 80%-98%, and the weight ratio of the graphene functional master batch is 2%-20%; the graphene functional master batch comprises the following components in parts by weight: 70-90 parts of a matrix material, 1-15 parts of graphene powder, 1-15 parts of a light-absorbing and heat-insulating material, 5-15 parts of an antibacterial material, 3-15 parts of an antistatic material, 0.1-2 parts of an auxiliary agent and 0.1-10 parts of an anti-mite material. The preparation method of the graphene multifunctional fiber comprises the steps of preparing graphene multifunctional master batch and melt spinning, and the graphene multifunctional fiber can be used for preparing flocculus or plush fabric. The function of the graphene multifunctional fiber does not decline along with use and washing, and the graphene multifunctional fiber has permanent functional characteristics and can be used for short fiber filling, spinning or filament weaving.

A method for preparing direct melt-spun high-viscosity PBAT / low-viscosity PET two-component elastic fiber and a high-viscosity PBAT polymerization reactor. This method uses two production lines respectively used to produce a high-viscosity PBT melt and a low-viscosity PET melt, which are then spun. The high-viscosity PBAT production line comprises a first esterification reactor, a second esterification reactor, a first prepolymerization reactor, a second prepolymerization reactor, and a high-viscosity PBAT polymerization reactor. The polymerization reactor is designed with a special disc structure in a parallel two-shaft disc reactor, and the two shafts are rotated in opposite directions, improving the devolatilization effect and self-cleaning, significantly increasing the viscosity. By using this method, the cost is low and the production capacity is high, the process flow is shortened, the fiber strength can reach 2.55˜2.85 cN / dtex, the crimp shrinkage rate can reach 25%˜60%, and the crimp stability can reach 58%˜70%.

The invention provides a multifunctional polyester yarn production system and an intelligent regulation and control method thereof, and relates to the field of chemical fiber spinning engineering. Comprising a multi-source sensing module, the multi-source sensing module carries out real-time acquisition processing on a multi-physics coupling process state set to form process state basic data, and the acquisition processing adopts a multi-type sensing device. And the depth inference processing module is used for carrying out space-time coupling inference processing on the process state basic data to form a process state recognition result. According to the multifunctional polyester yarn production system, through real-time acquisition and depth inference processing of multi-physical field data by the multi-source sensing module, accurate identification and prediction of a process state in a production process are realized. According to the multifunctional polyester yarn production system and the intelligent regulation and control method thereof, a space-time joint prediction model is used, the space-time joint prediction model comprises a graph convolutional network and a long-short-term memory network, space and time characteristics in data are fully mined, and the accuracy of process state recognition is improved.

The invention relates to the field of conductive fiber manufacturing, and discloses a light-color conductive fiber production process which comprises the following steps: mixing: mixing a matrix polymer, a conductive matrix polymer, a nano filler and a metal oxide in proportion; performing melt blending: performing melt blending on the mixture through a double-screw extruder to form conductive master batches; performing composite melt spinning: mixing the conductive master batch and a matrix polymer according to a mass ratio of 1: 4-1: 6, and performing melt spinning to form a fiber with a skin-core structure; and stretching and shaping: stretching and heat-shaping the obtained fibers, wherein the multifilament density is 50-200D. Through a composite conductive system of the conductive matrix polymer, the nanofiller and the metal oxide, the construction of a multi-dimensional synergistic conductive path is realized. Compared with a traditional technical scheme of constructing a conductive network depending on a single filler, the defects that the conductive network is easy to break and the conductivity is unstable are overcome, and the conductivity of the fiber under a dynamic condition is ensured.

The invention belongs to the technical field of preparation of bio-based functional fibers, and relates to a preparation method of high-shrinkage polyethylene furandicarboxylate fibers. The preparation method comprises the following steps: drying the polyethylene furandicarboxylate slices, and carrying out melt blending spinning to obtain the high-shrinkage polyethylene furandicarboxylate fiber. The linear density of the fiber is 2.22-4.44 dtex, and the linear density deviation ratio is-5%-5%. The breaking strength of the fiber is 3.5-4.5 cN / dtex, the elongation at break is 53.5-68.5%, the content of super-long fibers is 0-3 mg / 100 g, the defect content is 3-20 mg / 100 g, the crimp number is 12-15 / 25 mm, the crimp rate is 14-18%, and the boiling water shrinkage rate is 60-80%. The prepared high-shrinkage polyethylene furandicarboxylate fiber is a 100% high-shrinkage polyester fiber, the performance of the fiber is far superior to that of a conventional high-shrinkage fiber, and the high-shrinkage polyethylene furandicarboxylate fiber can become a substitute product of PET.

The present disclosure relates to absorbent articles comprising belts comprising one or more pluralities of tightly spaced (less than 4 mm, less than 3 mm, less than 2 mm, and less than 1 mm) and / or low decitex (less than 300, less than 200, less than 100 dtex) and / or low strain (less than 300%, less than 200%, less than 100%) elastics to deliver low pressure less than 1 psi (according to the conditions defined by the Pressure-Under-Strand Test in the Method below) under the elastics, while providing adequate Section-Modulus of (between about 2 gf / mm and 15 gf / mm), resulting in a Product Length-to-Waist Silhouette that is within from about −0.3 to about 0.3 of the Target Body Length-to-Waist Silhouette to make the article conform better to the body of the wearer at a lower Pressure-Under-Strand, even with a loaded core (holding at least 50 mls of liquid), to provide for the advantages described above.