Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

331results about How to "Reduce end break rate" patented technology

Meltblown mold head for preparing ultrafine fibers

The invention relates to a meltblown mold head for preparing ultrafine fibers. The meltblown mold head comprises a spinning plate and an air plate, wherein the middle of the end surface of the spinning plate is provided with a spinning hole, a plurality of crack grooves are formed between the spinning plate and the air plate, the crack grooves are positioned around the spinning hole, slantwise point to the spinning hole and are in central symmetry on the end surface by the spinning hole as the symmetry center, a separation flow stabilizing element is fixedly connected between the spinning hole arranged on the end surface of the spinning plate and the crack grooves, the cross section of the separation flow stabilizing element is in a right-angled triangle shape, in addition, one edge in two right-angled edges is connected with the end surface of the spinning plate, the other right-angled edge is near a spraying opening, the inclination degrees of the inclined edge of the right-angled cross section of the separation flow stabilizing element and a conical bus of the spinning plate relative to the crack grooves are identical, and meanwhile, the outer sides of the crack grooves are selectively connected with external flow stabilizing elements. The meltblown mold head has the advantages that the reverse backflow region is reduced, the jet flow diffusion to two sides is inhabited, the turbulence intensity is reduced, the fiber end breakage rate is reduced, the melt body is prevented from gluing on the mold head, the air temperature at the nearby part of the mold head is improved, the meltblown nonwoven energy consumption is reduced, and the fiber diameter is further refined.
Owner:安徽深呼吸纺织科技有限公司

Spinning finish and preparation method thereof

The invention relates to a spinning finish and a preparation method thereof. The spinning finish is prepared from (a) 50-80 wt% of refined vegetable oil, (b) 20-40 wt% of polyglycerol fatty acid ester, (c) 5-20 wt% of antistatic agent and (d) 0.1-1 wt% of coking retarder. The preparation method comprises the following steps: accurately measuring the (a) refined vegetable oil, (b) polyglycerol fatty acid ester, (c) Gemini antistatic agent and (d) coking retarder according to the weight percents, sequentially adding the components while stirring, heating to 70-80 DEG C until the components are completely dissolved, continuing keeping the temperature and stirring for 15 minutes, cooling to 50 DEG C below within 1 hour, filtering, and packaging to obtain the required spinning finish. The spinning finish provided by the invention has excellent heat resistance, and is environment-friendly since the vegetable oil is used as the main component. In the spinning technique, the spinning finish has the advantages of low smoke, easily cleaned coking substances, and low waste fiber rate; the spinning finish improves the working environment of the spinning workshop, and enhances the work efficiency; the raw materials are accessible and cheap and have favorable biodegradability; and the spinning finish is free of PEG (polyethylene glycol) and APEO (alkylphenol ethoxylate), and thus, is environment-friendly.
Owner:安徽灵达高新材料有限公司

Special polyester filaments for black fine denier industry, and preparation method of special polyester filament

The invention provides special polyester filaments for black fine denier industry, and a preparation method of the special polyester filaments. The special polyester filaments for the black fine denier industry comprise super bright polyester and black color masterbatch, wherein the black color masterbatch is prepared from the following materials by ratio: 30-50% of polyethylene glycol terephthalate, 30-50% of polybutylene terephthalate, 10-30% of carbon black and 0.4-12% of auxiliary additive. The preparation method of the special polyester filaments adopts a polyester chip with common viscosity and utilizes a melt spinning method, so that production cost is greatly saved from the raw material cost, a technological process is shorter, the energy consumption is low, end breakage rate is lower in the production process, and the produced filaments can meet the requirements of medium and high-strength sewing threads; furthermore, black fully drawn yarn (FDY) polyester filament sewing threads are prepared by directly adding the carbon black instead of firstly spinning and then dyeing, so that the phenomena such as environmental pollution, rinsing decoloration, light fugitive property, unstable chemical properties and the like which are caused by black dye dyeing are avoided.
Owner:NANTONG HUALUN CHEM FIBER

Bright yarn spinning device and application thereof

The invention discloses a bright yarn spinning device and an application thereof. The spinning device comprises a rough yarn feeding mechanism, a draft mechanism and a twisting and winding mechanism, and is characterized by further comprising a finishing mechanism which is composed of a fixed plate fixedly mounted on the draft mechanism, as well as a combing mechanism, a straight mechanism and a cluster mechanism all fixedly connected with the fixed plate; both the combing mechanism and the straight mechanism are provided with hairiness combing textures which are respectively used for combing and straightening cluttered hairiness and back curved hairiness projected from the bottom and periphery of the rough yarn; and the cluster mechanism is provided with a side horse-shaped surface and a symmetric V-shaped texture so as to complete rough yarn condensation and hairiness combing. The application of the spinning device is that the rough yarn fed by the rough yarn feeding mechanism is processed into the bright fine yarn after the procedures of drawing of the draft mechanism, combing and condensation of the finishing mechanism, and twisting and winding of the twisting and winding mechanism. The spinning device can also be used for bright spinning of cotton, mucilage and polyster fibre. According to the invention, the fine yarn is less in hairiness, and high in uniformity and strength; the preparation technology spinning septa is small; the end breakage rate and energy consumption are low; and the efficiency is high.
Owner:FUJIAN JINTAI TEXTILE

Steel wire connecting method

The invention discloses a steel wire connecting method, and provides a steel wire connecting method capable of preventing end breakage of a welding position during a drawing process, and reducing end breakage rate. The method comprises the following steps of: clamping a polished welding seam at a tempering jaw, and raising the temperature intermittently for 4-5 times, with 1-2 seconds of interval between every two temperature rises, and stopping temperature rise when reaching 750-820 DEG C; continuously raising the temperature to 750-820 DEG C when naturally cooling to the temperature of 650 DEG C in the air, stopping temperature rise, repeating the above cooling-raising temperature process for three to four times, and then naturally cooling to 650 DEG C in the air; then continuously raising the temperature to 750-820 DEG C, and keeping the temperature for 1 minute through intermittent heating; and after naturally cooling to 570-590 DEG C, instantly electrifying and raising the temperature by 20-50 DEG C, and naturally cooling. The steel wire connecting method provided by the invention has the beneficial effects that through high temperature tempering processing at the weld part, the internal stress generated in welding is reduced, the tenacity of the welding part is improved, the phenomenon of end breakage at the welding position in the drawing process is prevented, and the end breakage rate is lowered.
Owner:天津市新天钢中兴盛达有限公司

China hemp cotton air vortex spinning product and preparing method thereof

The invention provides a China-hemp cotton vortex spun yarn product which has few feathers, is anti-pilling, has a soft and smooth yarn body and is good in hydroscopic and fast dry performance. Warps and wefts of the China-hemp cotton air vortex spinning product are China hemp fiber/ cotton fiber vortex spun yarns, wherein the content of China hemp fibers occupies 60%, and the content of cotton fibers occupies 40%. The preparing method of the China-hemp cotton vortex spun yarn product comprises the following steps of a, preprocessing: the China hemp fibers are softened through emulgator before processing, the weight ratio of the emulgator, antistatic oiling agent and water satisfies the equation that ZY-06A:ZY-06B:water=1:0.5:5, and solution is prepared according to the ratio; the solution is evenly sprayed on the China hemp fibers according to 7% of the weight of the China hemp fibers; and the China hemp fibers are stored for 96 hours in the environment at the temperature of about 25 DEG C, and the China hemp fibers are turned over for a couple of times during storage; b, blending of the China hemp fibers and the cotton fibers: the China hemp fibers and the cotton fibers are mixed according to a portion inside a cotton box, and then blowing, carding, sliver lapping, combing and two combination processes are conducted; c, preceding spinning which comprises opening picking, cotton carding, combing and drawing; and d, vortex spinning: the temperature of a working workshop is 30 DEG C, and relative humidity is 65%.
Owner:JIANGSU YDTEX GRP LTD

Polytetrafluoroethylene filament as well as preparation method and application thereof

The invention discloses a polytetrafluoroethylene filament as well as a preparation method and an application thereof. The preparation method comprises the following steps: (1) performing superposition and oil removal on a plurality of layers of single-layer polytetrafluoroethylene rolling base tapes so as to form a multilayer superposed base tape; (2) longitudinally heating and drafting twice; (3) slitting into ribbon-like filaments; (4) sintering and drafting the ribbon-like filaments; and (5) twisting the ribbon-like filaments to obtain round filaments, setting, and performing shock cooling so as to obtain the product; or setting the ribbon-like filaments, performing shock cooling, twisting, thereby obtaining the product. The filament made by the method disclosed by the invention is low in unevenness, high in breaking strength and low in elongation, the overall strength of a filter material can be improved, and the service life of the filter material is prolonged; meanwhile, the breakage can be reduced due to high strength, and the production efficiency is improved; the polytetrafluoroethylene filament can be directly produced by using the conventional production equipment, is low in production cost and smooth and even in filament surface and contributes to weaving, and the woven base cloth can be widely applied to framework materials of high-temperature flue gas dust-removing filter materials in industries such as steel, waste incineration, cement, power plants and the like.
Owner:上海灵氟隆新材料科技有限公司 +1

Melt spinning component device capable of improving quality of super fine-denier filament

The invention relates to the production field of synthetic fiber filaments and provides a melt spinning component device capable of improving the quality of a super fine-denier filament. The melt spinning component comprises a component casing, wherein a distributing cup mechanism is arranged in the component casing, and a spinneret plate and a screwing clamp slot are arranged at the lower end of the component casing. The distributing cup mechanism is divided into an upper layer and a lower layer, the upper layer is a coarse filtering sand layer, the lower layer is a fine filtering sand layer, a primary distributing plate is arranged above the coarse filtering sand layer, a bottom filtering screen is arranged at the lower end of the fine filtering sand layer, an isolation filtering screen is arranged between the coarse filtering sand layer and the fine filtering sand layer, and meanwhile, the upper opening of the spinneret plate of the melt spinning component is in the shape of a circular bowl bottom. The melt spinning component device has the beneficial effects that through the two filtering sand layers and the isolation filtering net additionally arranged between the two filtering sand layers, a melt in the pressurizing state is prevented from rushing to disorder the coarse and fine sand filtering layers, meanwhile the melt is filtered finely and uniformly, and the fineness and the uniform effect of a finished product are good; the spinneret plate of the component is easy to machine and convenient to assemble and operate; and besides, the micro melt is enabled to be smoothly redistributed under the state of no dead corners through the circular bowl bottom opening at the bottom, the uniformity of the melt is improved after the melt is precisely filtered, and the quality of each mono-filament extruded by the spinneret plate is guaranteed to be uniform and consistent.
Owner:JIANGSU WENFENG CHEM FIBER GROUP

Multi-group color separation spinning and crocheting wool yarn and manufacturing method thereof

The invention discloses multi-group color separation spinning and crocheting wool yarn and a manufacturing method of the multi-group color separation spinning and crocheting wool yarn. The manufacturing method comprises the steps that elastic nylon or filaments are crocheted to be net-shaped yarn, drafted multi-group color separation spinning short fiber thick yarn wool tops are fed and enter false twisting hooks of hook wood ingots under the traction of the nylon filaments or the elastic filaments, 10-20 false twists are added on strands and the nylon filaments or the elastic filaments to form thick yarn to be attached to the net-shaped yarn of the nylon filaments or the elastic filaments, and the multi-group color separation spinning and crocheting wool yarn is obtained after untwisting. As the tape yarn is of a drafting type, the yarn has the advantages of being soft, fluffy, high in strength and the like, wool does not fall off easily, the yarn is applicable to sweater yarn of autumn and winter clothes, and good moisture absorption performance, the heat retention performance and the air permeability are achieved. The manufacturing method overcomes the defect that a traditional twisting machine is single in fiber mode, enriches the characteristics of multiple components of the yarn, subsequent dyeing is avoided, and the yarn is an environmentally friendly product.
Owner:JIANGSU LUGANG SCI & TECH

Three-point mutual wrapping and winding type spun yarn evening and ordering device and method

The invention provides a three-point mutual wrapping and winding type spun yarn evening and ordering device and method. The three-point mutual wrapping and winding type spun yarn evening and ordering device comprises a three-point mutual wrapping and winding mechanism. The three-point mutual wrapping and winding mechanism comprises a fixing frame, a stepping motor, a worm, a drive gear, a first transmission gear, a first winding and pasting roller, a second transmission gear, a second winding and pasting roller, a third transmission gear, a third winding and pasting roller and a first yarn guiding hook. The worm on the stepping motor is coupled with the drive gear, and the first winding and pasting roller is sleeved with the first transmission gear. The second winding and pasting roller is sleeved with the second transmission gear. The third winding and pasting roller is sleeved with the third transmission gear. The drive gear drives the first transmission gear, the second transmission gear and the third transmission gear to rotate. The three-point mutual wrapping and winding mechanism is additionally arranged on a ring spinning frame, the fluctuation of an air ring is effectively controlled, a spun yarn is stabilized to be evenly output, the silver evenness is improved, and the yarn quality is improved.
Owner:DONGHUA UNIV

Driving device for wool spinning machine

The invention relates to a driving device for a wool spinning machine. After a front roller motor decelerates, one path of front roller motor subjected to deceleration is connected with a front-right roller through the driving of a first belt; the other path of front roller motor subjected to deceleration is connected with a front-left roller through driving of a first intermediate gear pair and a second belt; after a rear-middle roller motor decelerates, one path of rear-middle roller motor subjected to deceleration is connected with an intermediate roller gearbox through driving of a third belt and a fourth belt; the other path of rear-middle roller motor subjected to deceleration is connected with the intermediate roller gearbox through driving of a second intermediate gear pair and a fifth belt; left and right intermediate rollers are connected with the intermediate roller gearbox; the third belt drives to be connected with a rear roller gearbox through the driving of a sixth belt; the second intermediate gear pair is connected with a rear roller gearbox through driving of a seventh belt; left and right rear rollers are connected with the rear roller gearbox; after a main motor decelerates, the main motor subjected to deceleration is connected with a spindle through a spindle belt via a main shaft and a rolling disk; and a lifting motor subjected to deceleration is connected with a ring rail through a worm gear and worm transmission pair, a stroke cam, a cam roller and a swing rod. The driving device disclosed by the invention has the advantages of simple structure, reduced amount of driving mechanisms and reduction of production cost.
Owner:常州市同和纺织机械制造有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products