188 results about "Fiber roll" patented technology

An object of the present invention is to provide a spiral membrane element that can improve the barrier property of a fiber reinforced plastic layer having a fiber roll as a reinforcing phase and that can effectively prevent occurrence of cracks. The spiral membrane element of the present invention is a spiral membrane element containing a cylindrical roll R in which a separation membrane, a feed-side flow passageway member, and a permeate-side flow passageway member are spirally wound in a laminate state around a perforated center tube 5 and in which a sealing part for preventing mixing of feed-side fluid and permeate-side fluid is disposed, wherein a fiber reinforced plastic layer 26 having a fiber roll as a reinforcing phase is formed on the outer circumferential side of said cylindrical roll R, and a plastic layer 24 is disposed in the inner part or on the inner side of the fiber reinforced plastic layer 26 approximately over the entire length and approximately over the entire circumference of the fiber reinforced plastic layer 26.

A method for automatically testing crimp performance of fiber includes setting light weight and heavy weight, measuring said weights by force test transducer, controlling holder to go down and to vise as well as to stop automatically and recoding initial length and tensile length as well as restoration length of fiber test sample automatically, calculating crimp rate and crimp elastic rate of said test sample by computer and automatically fetching out crimp number of said test sample by computer in utilizing optical path shooting technique. The test device used for realizing said method is also disclosed.

The invention relates to a modified ultra-high molecular weight polyethylene fiber forming special material, and a preparation method and a melt spinning fiber forming method thereof, and belongs to the technical field of high quality fiber materials. The special material is prepared from the following ingredients: ultra-high molecular weight polyethylene, high-density polyethylene, antioxygen andmodified nanometer inorganic filler. The melt spinning fiber forming method for the modified ultra-high molecular weight polyethylene fiber forming special material comprises the following steps: carrying out fusion plasticization on the modified ultra-high molecular weight polyethylene fiber forming special material through a single screw extruder, entering a spinning box body through a meteringpump device, carrying out fusion extrusion by a spinning component, and taking the heating function of a slow cooling device as an auxiliary to prepare a primary filament; S2: carrying out preliminary drawing on the primary filament obtained in S1, entering a four-level hot roller traction system to be subjected to grading drawing and sizing, and rolling through a fiber rolling device, and obtaining a finished product fiber. By use of the melt spinning fiber forming technology, middle and high strength ultra-high molecular weight polyethylene fibers can be produced at low cost, and the application of the middle and high strength ultra-high molecular weight polyethylene fibers in civilian field including labor protection, marine fishery and the like can be widely expanded.

The invention relates to thermoplastic prepreg prepared through a continuous laminating method and a method thereof. An existing laminating method for preparing the thermoplastic prepreg adopts intermittent production and is low in production efficiency. According to the method, two resin film rolls are arranged above and below a reinforced fiber roll respectively, and take-up operation is executed through a take-up device. Impurity removing and drying nozzles are arranged on the advancing path of reinforced fibers and resin films, the reinforced fibers and the resin films are converged to directional roller sets opposite vertically to be positioned and are preheated through preheating equipment sets opposite vertically, the positioned and preheated reinforced fibers and the resin films pass through continuous laminating equipment sets which are each provided with a heating and cooling device and are opposite vertically for preimpregnation, and the prepreg is obtained through paying-off and edge cutting operations. The continuous process is adopted, the production efficiency is greatly improved, pretension is exerted on resin and the fibers controllably by adjusting linear speed of each section in the preparation process, and the performance of the thermoplastic prepreg is improved.

The invention relates to an airgel material reinforced by fiber reinforcement and its preparation method. The width of the material is 0.5-1.5 meters, and the length is 5-30 meters. Its composition includes silicon dioxide airgel and reinforced continuous fiber, and its weight ratio is 1:0.5-2.5. The present invention also relates to (1), limiting and winding the continuous reinforcing fiber into a winding unit while keeping a certain gap between the continuous fibers; (2), disposing silicon alkoxide, alcohol solvent and basic catalyst according to a certain ratio (3) Immerse the silica sol into the continuous reinforcing fiber winding unit through the impregnation process; (4) After the silica gel is aged for a certain period of time, the surface is treated with a hydrophobizing agent; (5) The silica gel containing silica gel The continuous fiber winding unit of glue is supercritically dried. The material prepared by the invention has large specific surface area and low thermal conductivity, and can be applied in many fields such as fire retardation, sound insulation, gas adsorption and the like.

The invention relates to a graphene polylactic acid bicomponent composite fiber and a preparation method and equipment thereof, and belongs to the technical field of melt-spinning fibers. The preparation method comprises the following steps: respectively drying and mixing 60-75wt% of polylactic acid slices and 25-40wt% of graphene master batches to obtain a component A; drying the polylactic acidslices as a component B; respectively melting and extruding the component A and the component B, and then spinning together. The bicomponent composite fiber prepared by the graphene polylactic acid bicomponent composite fiber and preparation method and equipment thereof has obvious crimping effect, excellent elasticity and fluffiness, and good effects of strength, wear resistance, heat preservation, bacteriostasis and conduction.

The invention discloses a production line and technology for producing three-dimensional crimp hollow polyester staple fiber. The production line and technology are characterized in that two components are subjected to slicing, screening, metal detecting, drying, feeding, extruding, filtering, spinning, metering and spinning pack applying processes, and the two components are mixed in a spinning pack and then subjected to extrusion, circular blowing, initial oiling, channel passing, oiling, pulling, feeder applying and silk containing barrel reciprocating system applying processes. In this way, raw materials of the different components are treated through the production line by means of different front sections, the two components are mixed in the spinning pack, due to the fact that each monofilament is composed of the different components A and B, and the heat shrinkable properties of the two components are different, the fiber crimp properties are different. The inherent crimp property of the fiber can become more obvious and stable after relaxation heat setting is conducted.

The invention relates to a preparation method of continuous SiO2 / TiO2 aerogel fiber with photocatalytic performance. The preparation method includes the steps of preparing a spinning solution from silicate or silanol sol, adding a TiO2 photocatalyst, adding the spinning solution with the TiO2 photocatalyst to an acid solution coagulating bath to conduct reaction wet method spinning to obtain original silicic acid / silicate fiber with the TiO2 photocatalyst, conducting rolling and ageing, washing the fiber with deionized water to neutral, conducting solvent replacement through deionized water or ethyl alcohol, and conducting drying to obtain the SiO2 / TiO2 aerogel fiber. The method has the advantages that raw materials are low in price and easy to obtain, the reaction process is simple, and spinnability is high; the prepared aerogel fiber has abundant pores, a high specific surface area, high temperature resistance and chemical corrosion resistance, the specific surface area and TiO2 content of the fiber can be adjusted, and the method has application prospects in the field of photocatalysis and the like.

The invention relates to a three-dimensional crimped low-melting-point polyester fiber and a preparation method thereof. The method includes the following steps that low-melting-point polyester and conventional polyester are taken as a skin-layer component and a core-layer component respectively, and the three-dimensional crimped low-melting-point polyester fiber is then prepared by using a skin-core composite spinning method; the skin-core composite spinning method adopts a skin-core composite spinning assembly, a flow guide hole in a guide plate corresponding to the core-layer component in the assembly and a spinneret orifice in a spinneret plate corresponding to the skin-layer component in the assembly are same in cross section shape, the edge of the cross section of the spinneret orifice is formed by connecting an arc, a line segment a and a line segment b in sequence, the arc refers to the circular arc or the elliptic arc, the connection point of the line segment a and the line segment b is located at the center of a circle corresponding to the circular arc or at the center of an ellipse corresponding to the elliptic arc, and the included angle of the line segment a and the line segment b is 10-170 degrees. The crispation number of the prepared three-dimensional crimped low-melting-point polyester fiber is 12-25 piece / 25 mm, and the crimp percentage is 8-20%. The preparation method is simple, and the prepared polyester fiber is excellent in three-dimensional feeling and comfort level.

A polytrimethylene terephthalate fiber, a method for producing the same, a cheese-shaped package formed thereof, a false-twist textured yarn using the fiber and a fabric using the false-twist textured yarn are provided. The fiber is composed of 90 mol% or more of trimethylene terephthalate repeating units having a density in a range from 1.320 to 1.340 g / cm<3>, a birefringence in a range from 0.030 to 0.070, a peak value of thermal stress in a range from 0.01 to 0.12 cN / dtex, a boiling water shrinkage in a range from 3 to 40%, and an elongation at break in a range from 40 to 140%. The inventive polytrimethylene terephthalate fiber has both of proper crystallinity and orientation and is free from the package tightness due to yarn shrinkage and the bulge. The inventive fiber can be produced on an industrial scale.

The invention discloses a bamboo fiber rolling machine. A lower annular belt is one section longer than an upper annular belt and forms a raw material feeding area; a raw material clamping and conveying area is formed between the upper annular belt and the lower annular belt; the upper annular belt is provided with a front upper main roll and a rear upper main roll; a plurality of upper pressing rolls arranged straight are arranged between the front upper main roll and the rear upper main roll; the lower annular belt is provided with a front lower first main roll, a front lower second main roll and a rear lower main roll; the front lower second main roll corresponds to the front upper main roll on position; lower pressing rolls arranged straight with consistent number are arranged betweenthe front lower second main roll and the rear lower main roll; the positions of the upper pressing rolls and the lower pressing rolls correspond one by one; and jaws are formed between the related upper pressing rolls and the related lower pressing rolls and between a pair of corresponding upper pressing roll and lower pressing roll. The bamboo fiber rolling machine can realize continuous feed, can continuously and repeatedly roll the raw material on the advancing route of the raw material, and has the characteristics of good rolling effect, relieve of labor intensity, high production efficiency and the like.

A textile carding machine has a feed roller advancing a non-woven fibres to a separation roller. The foreign body separation hole is disposed in the discharge roller zone to separate the fiber and the foreign body. The outlet has a discharge passage with a discharge zone and an air flow zone. The foreign body outlet zone is disposed in the zone of foreign body separation hole and separated from the air flow zone. A curtain is arranged in the foreign body separation zone and air flow zone for the purpose of preventing against interference of the discharge of the foreign body inside the air flow.

The present invention relates to a drum treatment method of elastic yarn or fibre before which is dyed or bleached. Sid method includes the following steps: using cone winding machine to make elastic yarn or fibre roll to be dyed or bleached be winded on a large bobbin, then using mechanical equipment to take out said large bobbin and replace it with small bobbin covered with eyelet all over so as to make the yarn or fibre roll with elasticity obtain natural constraction to meet required tightness and density for dyeing or bleaching.

The invention relates to a production method for refined hemp and regenerated cellulose fiber high-count blended yarns. The step comprises the following steps: 1, performing health-preserving pretreatment on hemp fibers, including using an oiling agent to uniformly spray the hemp fibers, performing conditioning and oil supply treatment on the hemp fibers; 2, performing a blowing-carding procedure, including (1) opening, (2) removing impurities, (3) blending, (4) uniformly coiling; 3, performing a cotton carding procedure, including performing cotton carding processing on hemp viscose fiber rolls through a carding machine, the hemp viscose fiber rolls being treated by a lapper; 4, performing a drawing and roving procedure, including sending drawing which is processed by combing and pre-drawing procedures to a roving frame, and the drawing winding into rough yarns through the roving frame; 5, performing a spun yarn procedure, including sending the rough yarns to a spinning frame which uses compact siro spinning double aprons to draft, the rough yarns being drawn, through drafting, twisting, and winding, the yarns forming spun yarn cops. Beneficial effects of the method are that the processing varieties of hemp fiber yarns are expanded, processing of high-proportion hemp and high-count hemp blended yarns is realized, and high-quality of yarns is realized.

The invention relates to a preparation method of an aerogel felt. The method comprises the following steps: laying flow guide pipes between layers of fiber roll felts or fiber sheet felts, arranging a plurality of gel injection holes in the flow guide pipe, pumping catalyzed silicon dioxide sol through the flow guide pipe or sequentially pumping the silicon dioxide sol and a gel catalyst through the flow guide pipe, dipping the fiber felt in the catalyzed silicon dioxide sol or the silicon dioxide sol and a gel catalyst to form a wet gel felt, and then drying the wet gel felt to obtain the aerogel felt. The flow guide pipes are evenly laid in the fiber roll felt or between the stacked fiber sheet felts, the glue injection holes are evenly distributed in the flow guide pipes, sol is evenly injected between the fiber felts through the glue injection holes, and the two faces of the fiber felt body can be impregnated, so that the problem that in the discontinuous production process, impregnation is not uniform due to spraying single-face impregnation is avoided; the fiber felt body is evenly impregnated, and the prepared aerogel felt is uniform and stable in performance; and the fiber felt body is fully impregnated, and the prepared aerogel felt is low in heat conductivity coefficient.

The invention provides components, structures, methods, and assemblies for controlling sedimentation and debris flow associated with soil erosion. The invention also provides components, structures, methods, and assemblies that are useful for anchoring fiber rolls along a sloped surface.

The present invention discloses a fibre polishing wheel, which is prepared by the following mixture and fibre material: (a) the proportions of the mixture: 100 portions of natural latex, 0.5 portions of zinc oxide, 0.2 portions of age inhibitor DNP, 0.8 portions of age inhibitor 264, 0.3 portions of casein, 0.05 to 0.1 portions of potassium hydroxide, 0.5 portions of lanoline, 1 portion of accelerant PX, 1 portion of sulfur and 135.655 portions of sand; (b) the weight portion proportion of the fibre material and the mixture: 1 : 7 to 8; (c) the preparation method: (1) the zinc oxide, the age inhibitor DNP, the age inhibitor 264, the casein, the potassium hydroxide, the lanoline, the accelerant PX, the sulfur and the sand are uniformly mixed for later use; (2) The material of the first step is uniformly mixed with natural latex; (3) the material of the second step is uniformly mixed with the fibre material and then is squeezed in a rolling machine, so that the material is uniformly immerged into fibre; (4) the material-immerged fibre of the third step is rolled up and placed into a mould, which is then put into a thermotank and heated, and finally, after vulcanization, a finished product is obtained. The present invention has the advantage of that the polishing effect is obvious.

In an apparatus on a combing machine for monitoring the noil percentage, having a supply device, a combing device for combing out fibre material to be combed and at least one device for forming a combed sliver, at least one arrangement is present for continuous automatic generation of a signal representing the noil percentage when the combing machine is running, the arrangement comprising at least one measuring device for the quantity of supplied fibre material and at least one measuring device for the quantity of combed fibre material and a calculating means for determining the noil percentage. For monitoring and optimisation of the noil percentage, the or each measuring device for measuring the amount of combed fibre material may comprise a measuring device for a comber sliver having a feeler element or a contactless sensor.

The invention relates to a polymer optical fiber preform stretching device, which adopts technical proposal that: the device comprises a tower frame, and a preform feed device, a heating stretching furnace, a diameter-measuring instrument, a main traction device, an annealing oven, a coating device and a fiber rolling device that are arranged on the tower frame, wherein the preform feeding device is arranged above the heating stretching furnace, the diameter-measuring instrument is arranged below the heating stretching furnace, the main traction device is arranged below the diameter-measuring instrument, the fiber rolling device is arranged below the coating device, the heating stretching furnace comprises a preform stretching area and a preform softening area, the preform stretching area is arranged above the preform softening area. The stretching device has the advantages of high yield and large-scale industrial production.

The invention relates to the processing field of bamboo products, in particular to a bamboo fiber and a preparation method thereof. According to the invention, by adopting clustered bamboos as a raw material, the filament bamboo fiber with the diameter of 0.5-2 mm and the length of at least 0.5 m is prepared. The preparation method for the bamboo fiber comprises the following steps: a, selecting a green bamboo pole and breaking the green bamboo pole; b, selectively heating the broken bamboo; c, rolling the heated bamboo piece into the bamboo fiber; d, treating the bamboo fiber rolled through the former process with an acid material; e, cutting the bamboo material into required fiber length; f, cleaning, dehydrating and drying so as to obtain the bamboo fiber which can be used directly. A chemical agent is not used in preparation of the bamboo fiber, the preparation process is simple, the production cost is low and the prepared natural bamboo fiber has the good properties of moisture absorption, air permeability, bacteria resistance and bacteriostasis, ultraviolet prevention and the like, meets the national industrial development policy and facilitates environmental protection.

The invention relates to technology for processing soybean fiber and tencel fiber color-blended knitting fabric. Most of the knitting fabrics sold in market at present are dyed after textiles are prepared by weaving pure yarns or blended yarns. But the knitting fabrics prepared by blending soybean fibers and tencel fibers have poor dyeing effect if dyed by the conventional dyeing technology. The technology comprises the following steps of: opening the soybean fibers and tencel fibers, putting the soybean fibers and tencel fibers into dyeing solution mixed with DHF for 1 hour, carrying out thepreprocessing processes of raising the temperature, preserving the heat, reducing the temperature, dehydrating and the like, and preparing the soybean fibers and tencel fibers into soybean fiber and tencel fiber rolls by a blowing process; processing the soybean fiber and tencel fiber rolls into soybean fiber and tencel fiber strips on a carding machine provided with novel card covering; preparingthe soybean fiber and tencel fiber strips into blended yarns by roving and spinning processes; and weaving and finishing the blended yarns to obtain the color-blended knitting fabrics. The technologyhas the advantages of advanced technological method, strong feasibility, stable technology, good color effect of the fabrics, environmental protection and energy conservation and the like, and solvesthe problems.

The invention discloses a super dry and clean face layer material. The face layer material is fastened by two layers of fiber nets through hot air, the upper layer fiber net and the lower layer fibernet are both made of leather core double-component fiber, but hydrophilic finishing agents, the oiling rates, the fiber thicknesses, the fiber rolling numbers and the fiber rolling rates of the upperlayer fiber net and the lower layer fiber net are all different, the two layers of fiber nets are carded through a twin-carding machine respectively and are lapped, and the material is attached and fixed through a hot air drying box. The super dry and clean face layer material has the advantage that multiple times of quick permeating are conducted, liquid permeates downwards at a single point, theupper layer expanding area is small, and the permeating-back amount is small.

The invention relates to a method for melting spinning and flexible blowing of fibers and a product thereof, in particular to a melting spinning method of random differential air cooling in spinning forming of clothing fibers and a product thereof. In the method provided by the invention, in the process of the melting spinning, the air speed of the air cooling is controlled by pulse signals to change according to a law that the air speed satisfies an equation V(t)=S+ sin omega t. The invention also provides a fiber, wherein the crimp elasticity recovery rate of the fiber is 85-98%; after being stretched, the fiber is three-dimensionally crimped; under the condition that the total drawing ratio is 1.4-5.5, the final fiber crimp number is 7-15 / 25mm; and the distribution number of the fiber crimp number in a range of 11-19 / 25mm is more than 50% of the total distribution ratio of the crimp number. In the invention, the method of air cooling differentiation is adopted at a key area of the melting spinning and cooling forming to ensure that the problem that the forming and the winding of polyamide precursor fibers can be normally carried out while the difference of internal crystal orientation of the fibers as well as the profile degree and the differentiation of the morphological structure of the polyamide fibers can be guaranteed is solved, therefore, the purpose of synthetic fiber simulation is achieved.

The invention discloses a halogen-free ammonia-free aerogel composite coiled material produced by a supercritical process. The aerogel composite coiled material has the density of 160-180 kg / m<3>, theheat conductivity coefficient of less than or equal to 0.018 W / (m.K), the hydrophobicity of more than or equal to 99.5% and the vibration mass loss rate of less than 0.1%. A preparation process of the aerogel composite coiled material comprises the following steps: S1, adding ethanol and water into tetraethoxysilane serving as a raw material, and keeping the temperature at 50 DEG C for 24 hours to obtain a first mixed solution; adding ammonia-free alkali into the modified organic silicon ester, ethanol and water to obtain a second mixed solution; S2, mixing the first mixed solution and the second mixed solution in proportion to obtain a third mixed solution, and immersing a fiber coiled material in the third mixed solution to form a gel composite coiled material; and S3, carrying out supercritical drying on the gel composite coiled material to obtain the halogen-free ammonia-free aerogel composite coiled material. The product does not contain halogen elements, does not volatilize ammonia-containing irritant gas at a high temperature, and can be used for heat insulation and preservation in an indoor high-temperature environment and fire prevention and heat insulation under a thermal instability condition.

The invention belongs to the technical field of the textile industry, and particularly relates to plasma modified waterproof oil-proof stain-proof fibers and a preparation method and application thereof. The preparation method of the plasma modified waterproof oil-proof stain-proof fibers comprises the following steps of: S1, respectively carrying out plasma treatment and waterproof oil-proof stain-proof treatment on single-stranded fibers; and S2, carrying out winding forming on the single-stranded fibers treated by the step S1. According to the invention, a waterproof oil-proof stain-proof agent and molecular chains of the fibers are combined in a mode of chemical bonds to form one whole body, so that not only are problems of washing resistance, endurance and durability solved, but alsoa cost problem and an environmental protection problem are solved. A double-knitted fabric formed by knitting the fibers disclosed by the invention and conventional fibers can implement a special fiber of which one side is waterproof and the other side absorbs water; by testing, before and after washing, the double-knitted fabric has wettability of over 5 levels, a stain release property of over 4to 5 levels and oil repellency of over 6 levels; and moreover, in the preparation process, by a new principle and a new process, flow is reduced, energy consumption is reduced, and cost is reduced.

The invention relates to the technical field of crop processing devices, in particular to a method for extracting corn straw modified fine fibers by a machinery-chemistry combined method. The method comprises the following steps: increasing the water content of corn straw crude fibers to at least 70% by a water soaking mode; draining off water, then carrying out fiber separation through a stacked-screw fiber rolling and separating machine, and separating the crude fibers into fine fibers through a mechanical method; placing the fine fibers in a biological purification machine, and removing saccharide small molecules which are located among the fine fibers and are attached to the surfaces of the fine fibers through sugar-loving microorganisms to obtain biologically modified fibers; inactivating the biologically modified fibers through a steam heating mode; then carrying out dehydration through a rolling dehydrator to obtain the corn straw modified fine fibers; and packing and transporting the corn straw modified fine fibers. The quality of the straw modified fine fibers is guaranteed, the separation efficiency is improved, and energy conservation and environmental protection are achieved. The invention further provides complete equipment which is used for extracting the corn straw modified fine fibers and has occupies a small area.

The invention discloses a spinning process. The whole process flow includes: sequentially passing the combed waste through the cleaning process → carding process → drawing process → air spinning process; in the cleaning process, the combed waste is sequentially used by automatic Cotton plucking machine, first-level opener, second-level opener, vibrating box feeder, and single-hand lapping machine are processed to obtain combed noil fiber rolls; the rolled combed noil fiber rolls are carded Machine treatment to obtain cotton fiber slivers; the cotton slivers obtained in the drawing process are fed to the rotor spinning machine, and the cotton yarn products obtained by air spinning are fed to the cotton fiber slivers obtained in the carding process to be fed to the drawing frame to make cotton slivers. Feed to the rotor spinning machine; this process can effectively reduce fiber damage, less waste, high twist coefficient, uniform and stable cotton yarn product quality, and the strength value is about 8-10% higher than the existing technology.

The invention provides a method and device for testing the tensile strength of monofilaments. The method includes the steps of taking multiple samples from a fiber coil to be tested, wherein each sample comprises multiple monofilaments; conducting testing through a monofilament tensile tester to obtain tensile strength data of the monofilaments corresponding to each sample; averaging the tensile strength data of the monofilaments of all the samples to form the average values of the tensile strength of the monofilaments of the samples; secondarily averaging the average values of the tensile strength data of the monofilaments of all the samples, calculating the dispersion coefficient, and treating the dispersion coefficient as the parameter of the tensile strength of the monofilaments of the fiber coil to be tested. On the basis of the method and device, the test errors of the fiber strength can be reduced, and test efficiency can be improved.