124results about How to "Avoid fuzz" patented technology

Provided is a mask that inhibits particles from entering into the mask by keeping the mask body side portion in good contact with the face and suppressing the gap between the mask body and the face. The present invention is a mask (1) which comprises a mask body (10) and an ear hooking portion (12) formed on both ends of the mask body (10) in the lateral direction and has a plurality of pleats (15) formed thereon, wherein the mask is formed so that: the plurality of pleats (15) are stopped by fused portions (22) formed by way of heat sealing; the fused portions (22) are formed to be linear in the longitudinal direction and equally spaced on both sides of the mask body (10) in the lateral direction; and the space between adjacent fused portions is no less than 3 mm.

The present invention relates to a nozzle suitable for jetting high pressure and high temperature steam, and a method and an apparatus for producing an entangled nonwoven fabric using the nozzle. According to the apparatus, a steam inlet side main conduit (c1) and a steam outlet side conduit (c3) are connected with both end parts of a tubular nozzle holder (11) in a longitudinal direction provided integrally with nozzle members (15, 16, 23) having a plurality of nozzle holes (16a, 26). A steam outlet side conduit (c2) is provided with an opening/closing valve (55) and a trap conduit (57) is branched from a conduit at an upstream side from the opening/closing valve (55). By opening the opening/closing valve (55), a rapid temperature rise of the nozzle holder (11) can be enabled at a time of starting a production of a nonwoven fabric. Furthermore, even in the opening/closing valve (55) is closed in a regular operation, drainage generated inside the nozzle holder (11) can always be discharged to outside so that steam can be jetted stably and continuously, and thus a high quality entangled fiber nonwoven fabric can be produced continuously from the fiber web by the steam.

This invention discloses an aid used in terylene dyeing characterizing in including the following components in weight percentage: acid aid 10-20%, organic phosphonic acid 2-5%, organic carboxylic acid 3-7%, naphthalenesulfonate 10-18%, PEG 400 single oleic acid ester 5-8%, non-ion PAA 0-2%, polytrimethylene polyethenoxy aether 0-3% and water.

The invention discloses bamboo charcoal profiled fiber with good product quality and low production cost, and a preparation method thereof. The fiber comprises the following components in percentage by weight: 94-99 percent of melt-spun slices, 1-6 percent of bamboo charcoal fine particles, 0.05-0.5 percent of surfactant and 0.1-1 percent of antioxidant, wherein the melt-spun slices are polyester, polyamide, polypropylene, polyethylene and modified polymers of polyester, polyamide, polypropylene and polyethylene; and the bamboo charcoal fine particles are black bamboo charcoal or white bamboo charcoal with the particle sizes of less than 2 mum. The preparation method comprises the following steps of: (1) preparing the bamboo charcoal fine particles according to a certain proportion, adding the surfactant and the antioxidant into a double-screw machine in a mixed conveying way, and directly putting the dried melt-spun slices into the hybrid double-screw machine; (2) melting and extruding the melt-spun slices in the double-screw machine, uniformly mixing the melt-spun slices with the bamboo charcoal fine particles and an aid, and conveying the mixture into a spinning box for direct spinning, by means of connection of a flange bent pipe; (3) spinning a blend melt with a spinning component from a spinneret plate, cooling, blowing and winding to obtain bamboo charcoal profiled nascent fibers; and (4) performing stretching twice and heat setting according to a continuous yarn or short yarn post-processing procedure. The invention is suitable for the bamboo charcoal profiled fiber and preparation thereof.

Nonwoven fabric (10) having a multilayer structure including first layer (1) constituting one outer layer and second layer (2) constituting the other outer layer, which nonwoven fabric (10) is comprised of split type conjugate fibers and hot melt fibers. Split type conjugate fibers are contained in an amount of 20 wt.% or less in the first layer (1) and contained in greater amount in the second layer (2). The nonwoven fabric (10) is provided with a multiplicity of openings (3). The split type conjugate fibers lying at the periphery of openings (3) have constituent resins thereof split and spaced, and the extent of splitting and spacing thereof is greater than that of split type conjugate fibers at other parts of the nonwoven fabric (10)

The invention provides a discontinuous long fiber reinforced thermoplastic composite material mold pressing precast body and a preparation method thereof. The mold pressing precast body comprises slices formed by slitting/cutting of continuous fiber reinforced thermoplastic composite material preimpregnated sheets/preimpregnated yarns, wherein the length L range of the slices is 5-200 mm, the width W range of the slices is 2-30 mm, and the weight percentage content of fibers in the slices is 20-90 wt%; and high-strength isotropous complicated parts with high size stability can be prepared through secondary mold pressing of the precast body, so that the defects of easy warpup, fiber length loss, weaker part performances, anisotropic mechanical performances of continuous fiber reinforced composite materials and difficult machining of different-thickness complicated parts after mold pressing injection molding of short-fiber and long-fiber particles are made up.

The invention relates to a rough yarn conveying device. The device comprises an upper frame plate, a lower frame plate, a motor, a transmission mechanism, a rail and eccentric auxiliary shafts, wherein the upper frame plate and the lower frame plate are fixedly connected through a connecting column; the motor is arranged on the bottom surface of the lower frame plate; the transmission mechanism is connected with the motor and comprises a driving transmission shaft, a driven transmission shaft, and a driving gear and a driven gear which are positioned between the upper frame plate and the lower frame plate; the lower end of the driving transmission shaft passes through the lower frame plate and is connected with the motor, and the upper end of the driving transmission shaft passes through the driving gear and is fixedly connected with the driving gear; the lower end of the driven transmission shaft movably passes through the lower frame plate, and the upper end of the driven transmission shaft passes through the upper frame plate; the driven gear is fixedly sleeved on the driven transmission shaft; the top end of the driven transmission shaft is fixedly provided with a driving wheel; the eccentric auxiliary shafts pass through the upper frame plate and the lower frame plate respectively, and the top ends of the eccentric auxiliary shafts are fixedly provided with auxiliary wheels; and the rail is arranged above the upper frame plate, connected with the transmission mechanism and hung between the driving wheel and the auxiliary wheels. The rough yarn conveying device reduces labor intensity and optimizes the quality of finished products.

An internal warp uniformizing system suitable for fiberglass yarn weaving comprises a lease reed, a warp uniformizing mechanism and an imitation warp beam. The lease reed allows a warp unwound from a creel to pass through. The warp uniformizing mechanism mainly comprises a tension roller, a warp beam pressure roller and a warp one-way limiting roller or an intermediate transitional roller. The imitation warp beam is capable of driving the warp to enter a weaving area to be woven. The warp uniformizing mechanism is fixed on a slanting support plate fixedly connected with a loom wallboard. The warp beam pressure roller is connected with a pressure roller support arm through a rolling bearing. The pressure roller support arm is fixed on the slanting support plate through a bearing. The warp beam pressure roller contently contacts with the imitation warp beam under the action of warp tension and dead weight. The slanting support plate is fixed on a warp beam bracket fixedly connected with the loom wallboard. The internal warp uniformizing system has the advantages that the system is simple in structure and convenient and reliable in use, the contact procedure of fiberglass with mechanical parts can be omitted so as to prevent fiberglass fluffing as far as possible, and the like.

The invention relates to a die cutting device for porous ultrathin single-sided adhesive tape. The die cutting device comprises a first die cutting unit and a second die cutting unit which are sequentially arranged in the moving direction of a single-sided adhesive tape material strap, and waste discharging adhesive tape is arranged on the lower surface of the single-sided adhesive tape material strap. The first die cutting unit comprises a circular knife die cutting mechanism and a first waste discharging mechanism which are sequentially arranged in the moving direction of the single-sided adhesive tape material strap, and the second die cutting unit comprises a flat knife die cutting mechanism and a second waste discharging mechanism which are sequentially arranged in the moving direction of the single-sided adhesive tape material strap. The single-sided adhesive tape material strap is perforated through the first die cutting unit and then subjected to punching forming in the seconddie cutting unit. Compared with the prior art, the die cutting device for the porous ultrathin single-sided adhesive tape is advantageous in that in the die cutting process of circular holes, a flat knife punching mode is changed into a circular knife punching mode, so that the broken filament phenomenon occurring during die cutting is effectively avoided, meanwhile, continuous and automatic wastedischarging is achieved, complicated steps of intermittent waste discharging at regular intervals are avoided, working efficiency is greatly improved, labor cost is lowered, the die cutting speed canbe changed, and product quality is good.

The invention discloses an anti-fuzzing and anti-pilling polyester sportswear fabric. The polyester sportswear fabric is formed by weaving warp yarns and weft yarns; both the warp yarns and the weft yarns contain anti-fuzzing and anti-pilling polyester fibers; and the anti-fuzzing and anti-pilling polyester fibers are obtained by sequentially modifying polyester fibers with anthocyanin and camphorsulfonic acid. A preparation method of the anti-fuzzing and anti-pilling polyester fibers comprises the following steps of 1, adding the polyester fibers into alkali liquor for soaking and washing to obtain porous polyester fibers; 2, performing grafting treatment on the porous polyester fibers and the anthocyanin to obtain glycosidated porous polyester fibers; and 3, carrying out binding reaction on the glycosidated porous polyester fibers and the camphorsulfonic acid to obtain the anti-fuzzing and anti-pilling polyester fibers. By modifying the polyester fibers, the cohesive force between the polyester fibers and the flexibility of the polyester fibers are increased, so that the polyester fibers are not prone to scratching the surface of the fabric, and the effect of avoiding fuzzing and pilling is achieved.

The invention discloses a papermaking auxiliary agent. The papermaking auxiliary agent is prepared from the following main raw materials in parts by weight: 10-16 parts of carboxymethyl chitosan, 6-10 parts of polyacrylamide, 12-16 parts of talcum powder, 8-18 parts of quartz powder, 3-5 parts of polyethylene glycol, 1-4 parts of 2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate), 2-5 parts of alkylphenol ethoxylates, 1-4 parts of polyoxypropylene glycerol ether, 1-2 parts of sodium benzoate, 2-4 parts of vegetable wax oil, 1-2 parts of ammonium sulfate, 2-3 parts of disodium hydrogen phosphate and 3-6 parts of lactitol. The papermaking auxiliary agent disclosed by the invention adopts a simple process flow; and bad foams in a preparation process of paper pulp can be eliminated and the pulp is dispersed very well, so that paper sheets have very good tensile strength, elongation percentage, printing smoothness, whiteness, tearing strength and folding endurance.

The problem addressed by the present invention is to provide a fiber for which, despite having a phase separation structure, unevenness in fineness is small, dyeing unevenness and nap are suppressed, the durability of fiber characteristics with respect to long term storage and tumble drying are excellent, moisture absorption characteristics are excellent, anti-electricity characteristics in low temperature and low humidity environments are excellent, and elution of a hydrophilic compound when dyeing or using the fiber is suppressed. Provided is a fiber having a phase separation structure. The fiber is characterized by the following: comprising a copolymer of a hydrophobic polymer and a hydrophilic polymer; having a continuous phase and a dispersed phase according to a phase separation structure; the dispersed-phase maximum diameter in a fiber transverse cross-section being 1-40nm; and the fineness fluctuation value U%(hi) being 0.1-1.5%.

The invention provides a treating agent for synthetic fibers sufficiently preventing the occurrence of fluff or yarn breakage corresponding to speedup of a spinning step or a texturing step of the synthetic fibers in recent years and to provide a method for treating the synthetic fibers. The treating agent for the synthetic fibers comprises a lubricant and a functionality improving agent. The treating agent contains 0.05-20 wt.% of a specific phosphorus compound having 1-3 residues after removing all the hydroxy groups from an alkylene glycol or a polyalkylene glycol having an oxyalkylene group or a polyoxyalkylene group composed of 1-50 total of 2-4C oxyalkylene units in the molecule as at least a part of the functionality improving agent.

The invention discloses a grinding device suitable for a wind blade girder plate. The grinding device is characterized in that the rotating mode of a grinding head of a grinding machine is press-typerotation in the fiber direction of the girder plate, and it is ensured that the grinding head of the grinding machine grinds girder plate fibers downwards in the grinding process; when the two ends ofthe girder plate are ground, the track of the grinding head of the grinding machine is slash grinding motion in the fiber direction of the girder plate; the slash grinding motion can be divided intovertical direction motion and horizontal direction motion; specifically, the track of the grinding head of the grinding machine along the vertical direction motion is from top to bottom in the heightdirection of the girder plate; when the grinding head of the grinding machine grinds and moves from right to left, the rotating direction of the grinding head of the grinding machine is clockwise; andwhen the grinding head of the grinding machine grinds and moves from left to right, the rotating direction of the grinding head of the grinding machine is anticlockwise.

A method for modifying fibers is provided, which method comprises dispersing in water or a dilute alkali aqueous solution under shear a cellulose ether having such a low degree of substitution that a molar degree of substitution with an alkyl group and/or a hydoxyalkyl group ranges from 0.05 to 1.3, applying the resulting dispersion to fibers, and drying the applied fibers.