61results about "Staple fibre formation" patented technology

Provided is a method for preparing industrial nylon filament, belonging to the technical field of spinning production. The method includes the following steps: Step 1, extruding: putting a nylon raw material into an extruder, melting at a high temperature, stirring, and extruding from a nozzle; Step 2, molding: extruding molten liquid from the nozzle, and enabling the molten liquid to enter a cooling tank for molding; Step 3, wire pulling: applying a certain tension to the wire in the cooling tank, and pulling out a molded nylon filament. A spool fully wound with the nylon filament is replaced without stopping a cutting and winding device, the efficiency of winding filament is greatly improved, and thus the production efficiency of the nylon filament is improved.

A method of enhancing a fibre from a staple fibre precursor comprising: obtaining a staple fibre precursor, tensioning and aligning the fibre precursor along a fibre axis and subjecting the aligned staple fibre to an oxidation process, wherein the oxidation process comprises subjecting the tensioned fibre precursor to a general gradient of increasing temperatures in successive multiple stabilisation / oxidation ovens, the ovens ranging in temperature from 50 to 500 degrees Celsius.

The invention discloses a production method of superfine viscose staple fibers. The superfine viscose staple fibers are 0.4-0.44 dtex in single line density, 38-41 mm in length, 2.16-2.48 cN / dtex in dry breaking strength, 1.20-1.49 cN / dtex in wet breaking strength, 18.21% in dry elongation, 80%-87% in whiteness and 0.4-0.6 mg / 100g in defect. By adjusting technological parameters in the processes of dipping, aging, yellowing and ripening and filtering and defoaming after ripening, large-diameter particles and impurities easy to precipitate in spinning raw rubber are removed, it is guaranteed that the diameter of viscose particles meets the production requirement of superfine viscose, and meanwhile the problems of yarn breakage and unstable forming are avoided. The spinneret orifice which is more suitable for superfine viscose fiber production is designed, and the problem that the spinning property of viscose is affected due to the radial expansion effect and large-degree energy loss of viscose trickle at an outlet of the spinneret orifice is solved. The prepared superfine super viscose staple fiber is smaller in single-line density span and higher in fiber quality.

A gel fiber manufacturing apparatus includes: a first ejection portion configured to eject a main liquid containing a core liquid; a second ejection portion provided to surround a radially outer side of the first ejection portion and configured to eject a sheath fluid that hardens the core liquid; and a sheath fluid supply portion configured to alternately apply to the sheath fluid a constant pressure and a high pressure to supply the sheath fluid to the second ejection portion, the high pressure being higher than the constant pressure.

The present disclosure provides a system and method for producing nanofibers. The system includes an automated track system including a first track having a first face; and a second track having a second face facing the first face of the first track. The first track and the second track are positioned to define a proximal gap and a distal gap. The first track and the second track are adapted and configured to transfer a nanofiber coupled to the first face and the second face from the proximal gap to the distal gap. The system also includes a roving belt that is positioned to be partially disposed within the distal gap and is adapted and configured to decouple the nanofiber from the first face and the second face.

The present application relates to the technical field of spinning device, especially to a composite spinning device based on differential short fibers and a use method thereof, comprising a base and a support, the top end of the base is fixedly connected with the support, the top end of the support is fixedly connected with a replacement box assembly, the inner side of the replacement box assembly is fixedly connected with a stirring assembly, the inner side of the replacement box assembly is rotatably connected with a chuck assembly, the inner side of the chuck assembly is installed with a spinning assembly, the stirring assembly comprises a mixing cylinder, the inner side of the upper end of the mixing cylinder is provided with a feeding port, the top end of the mixing cylinder is fixedly connected with a second stepper motor, the tail end of the main shaft of the second stepper motor is fixedly connected with a rotating roller rod, the outer side of the rotating roller rod is fixedly connected with an inner groove rotating shell, the inner side of the inner groove rotating shell is rotatably connected with a stirring blade, one end of the stirring blade is rotatably connected with a double rotating arm rod, in the present application, the device provides additional dynamic adjustment, ensures uniform mixing of raw materials, improves mixing efficiency, and ensures consistency of product quality.

The present invention relates to a novel thermoplastic polyurethane (TPU) staple fiber and a process for producing the same, and to the use of the TPU staple fiber in producing yarns for fabrics used in shoes upper, pants, T-shirt, chair mesh, watch band and hair band, or stuffing materials for down jacket, quilt and cushion, or nonwoven fabric for synthetic leather, apparel and shoe, or organo sheet.

The invention relates to a preparation method of polyester staple fibers. A composite functional additive is designed to be a mixture of silicon dioxide, germanium dioxide, aluminum oxide and surface-modified aluminum-doped zinc oxide powder, so that the polyester staple fibers can obtain good far-infrared emission function, thereby obtaining good thermal insulation performance, and the thermal insulation performance can be further improved by matching the design of the powder particle size. Dimethyl propanediol, 2,5-dimethyl-2,5-hexyne diol, 2-butene-1,4-di-n-butyl ester and di(hexane-1,6-diol) titanium are added, so that the prepared polyester staple fibers have good thermal insulation performance, breaking strength and moisture regain. Coconut charcoal can absorb and emit far-infrared rays with a wavelength of 4 to 14 μm, thereby stimulating the formation of negative ions that are beneficial to the body, and can generate a porous and water-permeable surface layer on the fiber surface, so that skin sweat can be dissolved, and dryness and comfort can be ensured while keeping warm, and bacterial growth can be avoided.

Staple fibers and compositions formed from staple fibers are disclosed herein. The fibers are functionalized with molecules that render fabrics comprising the disclosed fibers hydrophobic, hydrophilic, and / or release molecules upon exposure to an external stimulus. Also presented are methods of synthesizing the same and a fabric comprising woven yarns including the staple fiber.

The present invention relates to para-aramid staple fibers having improved cut resistance due to the use of high elongation yarn of 4% or more, and a method for producing aramid spun yarn using the same.

Disclosed in the present invention are a centrifugation- and continuous shearing exfoliation-based preparation method and device for a nano material. The method comprises: materials entering circumferential flow channels under the centrifugal effect, and using shearing flows in the circumferential flow channels to apply a strong shearing exfoliation effect on the materials; and under the action of a centrifugal force, screening for the exfoliated materials through radial flow channels and enabling the exfoliated materials to enter the circumferential flow channels of the next layer, and enabling the unexfoliated materials to remain in the circumferential flow channels of the previous layer for continued exfoliation. The device comprises a high-speed motor, a material container, stationary toothed discs, rotating toothed discs, and a toothed disc rotating shaft; a material cavity is formed in the material container and the stationary toothed discs are fixed to the material container; the rotating toothed discs are provided in the material cavity; the toothed disc rotating shaft passes through the middles of the rotating toothed discs; the high-speed motor is connected to one end of the toothed disc rotating shaft; the rotating toothed discs and the stationary toothed discs are mutually embedded to form a multi-layer flow channel area; circumferential flow channels are distributed layer by layer from the center to the periphery; and radial flow channels are distributed in the same circumferential direction. The present invention facilitates formation of one-dimensional nanofibers having a large length-diameter ratio and / or two-dimensional nanosheets having a large specific surface area.

Contrary to packagings or bottles made of pure materials like PET, nonwovens usually consist of a mix of materials and are as such difficult to include in a recycling process. The present invention relates to a method for recycling polyester-based nonwovens comprising 5 to 50% of PET / coPET low melt staple fibers into polyester staple fibers ( PSF), and further including these fibers into new nonwovens for a large variety of articles for applications in virtually any technical field.

This invention provides a highly efficient hemostatic material for inhibiting both overt and covert bleeding, and its preparation and application. The preparation of this hemostatic material includes the following steps: (1) inoculating bacterial colonies into a culture medium for fermentation to obtain a hydrogel-like bacterial cellulose membrane; shearing, homogenizing, and freeze-drying the bacterial cellulose membrane to obtain bacterial cellulose nanofibers; (2) dispersing the bacterial cellulose nanofibers and then oxidizing them to obtain oxidized bacterial cellulose nanofibers; (3) mixing the oxidized bacterial cellulose nanofibers with tranexamic acid at a weight ratio of 3:100, and preparing an oxidized bacterial cellulose nanofiber composite loaded with tranexamic acid using an EDC / NHS reaction, which is the hemostatic material. The hemostatic material of this invention can achieve the dual effect of inhibiting both overt and covert bleeding in vivo, and while inhibiting covert bleeding, it also significantly improves the effect of inhibiting overt bleeding.

The invention belongs to the technical field of textiles, and particularly discloses a bionic velvet flower, a method for preparing the bionic velvet flower based on orange petal-shaped composite fibers and a textile. The bionic velvet flower comprises a velvet core and velvet branches which are connected with the velvet core and are radially dispersed along the two sides of the velvet core, and the length of the velvet branches is 10-30mm; the velvet core is made of at least two polymers, the velvet branches are made of polymers, and the bionic velvet flower is made of at least two polymers. The bionic velvet is prepared by the following steps: performing heat setting on orange petal-shaped composite fibers, heating, bonding, cutting to prepare short fiber bundles or short fibers with two free ends and a single bonding point in the middle, splitting, and performing spray drying. The structure of the bionic velvet flower is similar to that of natural velvet flower, and the bionic velvet flower can be used for filling clothes, quilt cores and pillow cores; and the preparation method is simple, the production efficiency is high, and continuous large-scale production can be realized.

The invention relates to a viscose ultra-short fiber production system, which comprises a spinning forming part, a plasticizing stretching decarburization part, a folding post-processing part, a stretching water removal part, an ultra-short fiber cutting part and a control part, and is characterized in that the spinning forming part is used for forming a viscose stock solution into filaments, pulling out the filaments and winding the filaments on a draw-off godet to drive the filaments to run; a plurality of folding post-treatment parts and a plurality of stretching water removal parts are arranged and serve as folding water removal assemblies, one stretching water removal part is arranged on the downstream of each folding post-treatment part, and filaments are sequentially treated through the plasticizing stretching decarburization part and the folding water removal assemblies and then are stretched and cut into ultra-short fibers through the ultra-short fiber cutting part; and the control part is electrically connected with the plasticizing stretching decarburization part, the folding post-processing part, the stretching water removal part and the ultra-short fiber cutting part respectively, and controls the rotating speed of the godet in the downstream part to be greater than that of the godet in the upstream part. The viscose ultra-short fiber production system provided by the invention can ensure that the obtained viscose ultra-short fibers meet the process index requirements.

A yarn comprising a filament core and a staple fiber sheath, said staple fiber sheath is made of, or comprises at least 95% by weight of, a blend of first fibers and second fibers, wherein said first fibers are natural cellulosic fibers and said second fibers are synthetic fibers, characterized in that: the weight ratio of said first fibers to said second fibers is in the range of 65 / 35 to 35 / 65, preferably said ratio being in the range 40 / 60 to 60 / 40, more preferably about 50 / 50; wherein the elongation at break of the polyester filaments of the filament core, measured according to DIN ISO 2062, is in the range of 5% to 15%, more preferably between 10% and 12%.

The invention relates to a process for preparing man-made cellulosic staple fibres (4) for yarn spinning, the process comprising manufacturing man-made cellulosic staple fibres (4) from cellulosic raw material (2) in a manufacturing step (10, 100) providing a mass (6) of wet man-made cellulosic staple fibres (4) as a manufacturing output. The process comprises flash-drying the wet man-made cellulosic staple fibres (4) with heated drying gas flow into dry man-made cellulosic staple fibres (4) in a drying step (150).

The present invention relates to an apparatus for producing short polymer fibers by electrospinning, comprising a metering electrode 1 and a collector medium 3 facing the metering electrode 1 in the discharge direction. To provide an apparatus of the above kind that allows producing short polymer fibers by electrospinning, it is proposed that a cutting grid 5, which can be heated to at least the softening temperature of the polymer, is attached in front of the collector medium 3 in the discharge direction 2, the grid pitch of which corresponds to the minimum fiber length of the short fibers.

The present invention relates to a method of treating a mycelium object (30) in the form of mycelium fibrils into a mycelium product (MYP), the mycelium object comprising mycelium cells having a cell wall, the cell wall of the mycelium cells comprising a natural polymer comprising a chitin / chitosan polymer, the method of treating the mycelium object (30) comprises a reconstitution process (REC) for reconstitution of the mycelium object in the form of mycelium fibrils into mycelium fibres, the method of treating the mycelium object (30) further comprising at least one of the following processes: a deacetylation process (DEP), a plasticization process (PP), a dyeing process (DYP), and a fat liquoring process (FLP).

The utility model relates to the technical field of polytetrafluoroethylene, in particular to a functional polytetrafluoroethylene short fiber forming production device which comprises a water storage tank, fixing circular rings are fixedly connected to the upper portion of the left end and the upper portion of the right end of the water storage tank, and a connecting semi-ring is fixedly connected between the two fixing circular rings. Connecting threaded pipes are fixedly connected to the left portion and the right portion of the lower end of the connecting semi-ring, lifting threaded rods are clamped into the two connecting threaded pipes in a penetrating and threaded mode, a plurality of sets of water leakage holes are formed in the outer surface of the connecting semi-ring at equal intervals, and power water pumps are fixedly connected to the left side and the right side of the interior of the water storage tank; the output ends of the two power water pumps are fixedly connected with folding water pipes, and the lower portion of the left end of the water storage tank is fixedly connected with a water drainage pipe. According to the functional polytetrafluoroethylene short fiber forming production device, a pipeline which is not shaped can be supported, falling and bending caused by gravity are prevented, and the pipeline can be comprehensively cooled.

Aspects of the present disclosure include a manufacturing platform for supporting bioprinted fibrous structures during printing, patterning and / or processing, the manufacturing platform including a frame having a plurality of columns for securing crosslinkable fibers during printing of the crosslinkable fibers, and wherein a continuous length of the crosslinkable fiber is printed around a plurality of columns during a 3D bioprinting process. The manufacturing platform enables the crosslinkable fibers to be suspended during one or more of printing, patterning, and / or processing. In this manner, the bioprinted fibrous structure includes a uniform outer surface and may be readily tailored and / or further processed after printing and patterning are completed.

The invention provides a method of forming biopolymer fibres, the method comprising; (i) providing a first and a second aqueous solution, wherein one of the first or the second aqueous solution comprises at least one water-soluble polycationic biopolymer and the other first or second aqueous solution comprises at least one water-soluble polyanionic biopolymer; and (ii) adding the first aqueous solution to the second aqueous solution to form a complexation mixture, wherein the complexation mixture comprises polyelectrolyte biopolymer complexes formed by complexation of the polycationic and polyanionic biopolymers of the first and second aqueous solutions; and (iii) effecting laminar fluid flow of the complexation mixture, which applies shear stress to the polyelectrolyte complexes to form biopolymer fibres.

The application provides a preparation method of low bulk density soluble fiber product, comprising: melting raw materials, fiberizing, cotton collecting, needling, calcining and forming to obtain the low bulk density soluble fiber product; the temperature of the melt to the fiberizing equipment is 100-200 DEG C lower than the temperature of the melt flowing out of the melting equipment during the melting process. The low bulk density soluble fiber product prepared by the method has the advantages of light weight, bulk density of 20-48 kg / m 3 , easy to carry the dead weight, the product can meet various customized needs, is convenient for construction, significantly reduces the manufacturing and operation cost of the user, belongs to A-grade non-combustible and has no safety hazard, has low thermal conductivity of 0.031-0.035 w / m.k, and the heat insulation, sound insulation and insulation effects are significantly improved. The application further provides a low bulk density soluble fiber product.

A gel fiber manufacturing device is provided with: a first discharge unit for discharging a main liquid containing a core liquid; a second discharge part that is provided so as to surround the outside in the radial direction of the first discharge part and discharges a sheath liquid that solidifies the core liquid; and a sheath liquid supply unit that supplies the sheath liquid to the second discharge unit by alternately applying a constant pressure and a high pressure, which is a pressure higher than the constant pressure, to the sheath liquid.

To provide an air-laid staple fiber with improved dispersibility, and a method for producing the staple fiber.SOLUTION: An air-laid staple fiber includes a stable fiber to which a fiber-treatment agent containing a hydrophilic oil solution and a silicone-containing oil solution is bonded by 0.7-2 wt.% of the staple fiber weight, the weight ratio of the hydrophilic oil solution and the silicone-containing oil solution contained in the fiber-treatment agent (weight of hydrophilic oil solution / weight of silicone-containing oil solution) being in a range from 60 / 40 to 90 / 10, and the moisture content being 2-13%.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of PTFE (Polytetrafluoroethylene) fine staple fiber production, discloses an extrusion structure for PTFE fine staple fiber production, and solves the problems that existing machine nozzles for PTFE fine staple fiber production are fixedly or semi-fixedly mounted; the problems that materials are easily blocked and the interior of a machine is inconvenient to clean after long-time use, so that the fiber flow velocity is unstable or caking is generated, the quality of a final product is influenced, and the production efficiency is greatly reduced are solved. An extrusion structure for PTFE fine staple fiber production comprises a base, an extrusion assembly is fixedly installed on the upper surface of the base, a charging barrel is fixedly installed on the upper surface of the base, a spray head is movably installed in the charging barrel, a rectangular groove is formed in one side of the base, and a cutting assembly is fixedly installed on the inner wall of the rectangular groove. The effect that the production efficiency is not affected by blockage when the PTFE material is manufactured for a long time is achieved.

The application provides a preparation method of ternary conductive polymer composite nanofiber, mainly including the following steps: introducing aniline monomer containing a dopant, an initiator of the aniline monomer, a pyrrole monomer, and an initiator of the pyrrole monomer into different nodes in the same reaction tube by the action of gravity; mixing and flowing in the reaction tube and generating a polymerization reaction; in the flowing process, the aniline is polymerized to generate polyaniline nanofiber, then the pyrrole is polymerized on the surface of the polyaniline nanofiber, and finally the thiophene is polymerized on the surface of the composite nanofiber to generate polyaniline / poly pyrrole / poly thiophene ternary composite nanofiber; the polyaniline / poly pyrrole / poly thiophene ternary composite nanofiber is prepared for the first time, and continuous preparation is realized; only the gravity of the solution is used as a power source, without any power device and stirring device, the operation is simple, the production efficiency is greatly improved, and the method is an effective way for industrialized continuous production of ternary conductive polymer composite nanofiber.

Aspects of the disclosure include a fabrication platform for supporting a bioprinted fiber structures during printing, patterning, and / or processing, comprising a frame with a plurality of posts for securing a cross-linkable fiber during printing thereof, and where a continuous length of the cross-linkable fiber is printed around a plurality of posts during the 3D bioprinting process. The fabrication platform enables the cross-linkable fiber to be suspended during one or more of printing, patterning, and / or processing. In this way, the bioprinted fiber structure comprises a uniform outer surface, and can be easily modified and / or further processed after printing and patterning are completed.

The present invention relates to a hyaluronate nonwoven fabric composed of hyaluronate fibers and a manufacturing method therefor, wherein a nonwoven fabric composed of only pure hyaluronate is provided without the addition of any heterogeneous fiber, such as PVA which is a binding fiber essentially added during a wet-laid nonwoven fabric manufacturing process, so that a nonwoven fabric composed of only hyaluronate fibers with excellent human compatibility and without cytotoxicity, skin irritation, and the like can be provided, and thus can be used as patches for cosmetic patches, wet wound dressings, tissue adhesion barrier membranes, and the like.