31results about How to "Good tear resistance" patented technology

The invention relates to a bacterial cellulose biological patch and a manufacturing method thereof. The biological patch comprises a bacterial cellulose film, namely BC film, wherein the polymerization degree of the bacterial cellulose ranges from 2000 to 20000, the crystal form of the cellulose crystal is I type, the crystallization index is 50-95%, and in cell parameters, a is equal to 0.815nm, b is equal to 1.025nm, c is equal to 0.832nm, and beta is equal to 85 degrees. The bacterial cellulose biological patch has excellent mechanical property, better biological fitness, better anti-adhesion property and antimicrobial property in the enterocoelia environment, and proper area can be conveniently obtained.

The invention discloses a high-inflaming-retarding organosilicone sponge material and a preparation method thereof. The high-inflaming-retarding organosilicone sponge material is composed of a component A and a component B, the component A comprises double-end hydroxyl polysiloxane, double-end vinyl-containing polysiloxane, hydrosilicone oil, silicon resin, reinforcing filler, a crosslinking inhibitor, graphene and carbon black, and the component B comprises double-end hydroxyl polysiloxane, double-end vinyl-containing polysiloxane, hydroxyl silicone oil, graphene, silicon resin, reinforcing filler, zinc oxide and a catalyst. The component A and the component B are mixed according to the mass ratio being 1:1, curing is carried out for 2-10 minutes at the temperature of 13 DEG C to 35 DEG C, a sponge with a certain foaming ratio can be generated, the high-inflaming-retarding organosilicone sponge material is high in compression strength and excellent in permanent compression deformation resistance and inflaming retarding performance and is extinguished once the material is separated from a fire, no harmful gas is generated during combustion, and the material is widely applied to the fields of building hole plugging, car seats, sofas, mattresses and the like.

The invention discloses a fluorubber shunt parachute with tearing resistance and the preparation method thereof. The invention is made of the following row materials with the percentage in weight: 70-80 shares of tetrapropyl fluoro elastomer gross rubber, 20-30 shares of hydrogenated nitrile-butadiene gross rubber. The shunt parachute is both with the chemical mediator of the resistance to the broad spectrum and the better tearing resistance. The invention has the advantages of low cost and simple preparation technology.

The invention discloses an anti-static down feather composite fabric. The fabric comprises a fabric layer and a down feather layer, wherein an anti-static layer is arranged between the fabric layer and the down feather layer. The anti-static down feather composite fabric has simple structure and characteristics of good wind resistance, water resistance, corrosion resistance, prominent cold resistance, wear resistance and tearing and pulling resistance, can prevent the surface of the down feather fabric from adhering to dust and is especially suitable for producing down feather clothing, thus solving the problem that people suffer from static when wearing the down feather coats in winter.

The invention discloses an inflaming-retarding tear-resisting fireproof cable material.The inflaming-retarding tear-resisting fireproof cable material is prepared from, by weight, 30-50 parts of neoprene, 20-35 parts of polyvinyl chloride, 5-15 parts of ethylene propylene diene monomer, 0.5-1.5 parts of peroxysuccinic acid, 0.5-1 part of tert-butyl hydrogen phthalate, 0.2-0.8 part of tetramethylthiuram disulfide, 0.4-1.2 parts of 1,3(1,4)-bis(tert-butyldioxyisopropyl)benzene, 40-60 parts of fast extruding furnace black, 20-30 parts of ceramic fiber, 5-15 parts of hard pottery clay, 5-15 parts of modified activated carbon, 1-3 parts of antiager, 0.4-0.8 part of polyvinyl butyral, 1-2 parts of stearic acid, 1-2 parts of polyethylene wax and 0.5-1.5 parts of epoxidized soybean oil.The inflaming-retarding tear-resisting fireproof cable material has good inflaming-retarding property and excellent waterproof performance and tear-resisting performance.

A conducting nanometer calcium carbonate and its production are disclosed. The procedure includes: proportioning by CaCO3: Sn: Sb=55-90: 9-40: 1-10, taking nanometer calcium carbonate as nucleosome and forming tin dioxide doped with antimony coat on nanometer calcium carbonate surface by chemical co-deposition. Its advantages include low cost, no pollution, low resistivity and good anti-static and conducting plastic mechanical performances. It can be used for plastic, rubber and ink.

The invention belongs to the technical field of clothes processing and provides a processing method for improving abrasive resistance of collar and gussets of a non-ironing shirt. The method comprises the following steps of: (1), cutting: performing plate arrangement on fabrics and cutting; (2) sewing to obtain a semi-finished product shirt; and (3) performing non-ironing treatment on the semi-finished product shirt obtained in the step (2): a, performing local medicine addition and local pressing treatment on the collar and gussets of the semi-finished product shirt; and b, atomizing, uniformly spraying, pre-drying, pressing, drying and washing the clothes obtained in the step a. The collar and gussets of the non-ironing shirt produced by using the processing method is high in abrasive resistance and tear-resistant performance. The processing method is simple in process, high in controllability and suitable for large-scale production, and the non-ironing shirt produced by using the processing method is high in abrasive resistance and tear-resistant performance.

The invention discloses a preparation method of clean and ecologically-degradable PVC (Polyvinyl Chloride) decorative artificial leather. The artificial leather is prepared from ecological PVC slurry;the ecological slurry is prepared from the following components: PVC resin powder, vinyl chloride-vinyl acetate resin, diacetyl epoxidized soybean glyceryl oleate, a polycaprolactone based polyurethane elastomer, a foaming agent, epoxidized soybean oil, organic modified clay, a lubricant, a silicone master batch and a stabilizing agent. The artificial leather obtained by a treatment technology has the advantages of no toxin and environmental friendliness, low temperature resistance, wear resistance and scratching resistance, excellent softness, extreme easiness for maintenance, capability ofbeing partially biodegraded, good texture, full color and luster, moisture absorption and ventilation, smoothness and comfort, antibacterial and deodorization performance and good anti-migration performance.

The invention belongs to the technical field of polymer materials and relates to a modified halogen-free flame-retardant thermoplastic elastomer cable material and a production method thereof. The modified halogen-free flame-retardant thermoplastic elastomer cable material is characterized by comprising butadiene-styrene copolymer, polyphenyl ether resin, polyacetylene or polypropylene, polyolefin elastomer, plasticizer, mica, aluminum hydroxide, talcum powder, ethylene vinyl acetate copolymer, polytetrafluoroethylene, lubricant, antioxidant, silicone less than 300 meshes in fineness, and carbon black. The invention further discloses the production method of the modified halogen-free flame-retardant thermoplastic elastomer cable material. The modified halogen-free flame-retardant thermoplastic elastomer cable material has the advantages such as good processability, high flame retarding rating, non-toxicity, low density, good tear resistance, good acid and alkali resistance and good weatherability, with excellent water resistance, cracking resistance and dripping resistance; the modified halogen-free flame-retardant thermoplastic elastomer cable material never ages or separates out under high temperature and high dampness for a long time, the mechanical properties are kept good, and the electrical performances have no evident change.

The invention discloses a novel multi-effect outer wall air inlet pipe comprising a pipe body, a positioning flange and a seal ring. A telescopic flexible hose is arranged between the pipe body and the positioning flange. The inner pipe wall of the pipe body is a reducing pipe wall. Multiple silencing holes are evenly distributed in the inner wall pipe and are filled with silencing cotton. A grating piece is arranged at an air inlet. The rear end of the grating piece is connected with the air inlet in a threaded manner. Three to five inclined blades are arranged at the front end of the grating piece. A first roughening ring and a second roughening ring are arranged on the outer surface of the pipe body. A protection layer is arranged on the outer wall of the pipe body and comprises a nanometer anti-corrosion coating, a heat preservation layer and an anti-corrosion waterproof coating. By means of the novel multi-effect outer wall air inlet pipe, noise generated when air enters the pipe body can be reduced; the protection layer is arranged, the corrosion prevention function, the heat preservation function and the waterproof function of the outer wall of the pipe body are improved, the effects of slowing down aging of the outer wall of the pipe body and reducing rainwater invasion are achieved, and the service life of the air inlet pipe can be prolonged; and backward pouring of rainwater or invasion of mosquitoes can be prevented, accumulation of foreign matter in the pipe body can be avoided, and maintenance of the interior of the pipe body in the later period can be reduced.

The invention discloses a puncture-resistant anti-aging PVC (polyvinyl chloride) inflatable boat material. The inflatable boat material is prepared from PVC resin powder, vinyl chloride-vinyl acetateresin, DOTP, modified PBO chopped fibers, a foaming agent, epoxidized soybean oil, organic modified clay, a lubricant, a silicone masterbatch and a stabilizer. Artificial leather prepared according toa treatment process has advantages of low-temperature resistance, abrasion resistance, scratching resistance, high softness, easiness in maintenance, great texture, saturated color, smoothness, coziness and great antibacterial, deodorizing and anti-mobility performances.

The invention discloses a composite polyester staple fiber geotextile and a preparation method. The composite polyester staple fiber geotextile is prepared from, in weight percent, 80-90% of polyesterstaple fibers, 5-15% of polypropylene staple fibers and 1-5% of polypropylene composite particles. According to the composite polyester staple fiber geotextile and a technology, the mechanical strength, the bursting strength, the aging resistance and the flame resistance of a polyester geotextile can be improved, product thicknesses can be reduced under the condition of equal surface density, andthe geotextile cannot be easily torn in a right-angle direction.

The invention provides an iron powder desoxidant packaging material and a manufacturing method, and belongs to the technical field of packaging materials. The problems that an existing desoxidant packaging material is not good in permeability and prone to damage are solved. The powder desoxidant packaging material comprises non-woven fabric and a ventilation film, an oil-proof layer and a bonding glue layer are sequentially arranged on the top face of the non-woven fabric, and the ventilation film is compounded on the bonding glue layer. The ventilation film is compounded on the non-woven fabric, good breathability is achieved, and due to the fact that the non-woven fabric has good tearing resisting performance and scraps cannot be generated, food pollution is avoided, and safety is better during food storage.

The invention discloses an anti-tear compression-resisting cable sheath material for coal mine, and the material is prepared by the following steps: terpolymer EP rubber, an ethane-butylene elastomer and chlorinated polyethylene which are used as base materials are plasticated for 2-4 minutes; a carbon black N330, nanometer silica, activated zinc oxide, a silane coupling agent, an antioxidant 4,4-bis(2,2-dimethyl benzyl)diphenylamine, eleaostearic acid, paraffin oil, microcrystalline paraffin, a promoter M, a promoter TMTD and a flame retardation system are mixed uniformly and discharged, and the mixing temperature is 115-121 DEG C; 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane and a crosslinking active auxiliary agent triallyl isocyanurate are sulfurated, the sulfuration temperature is 155-165 DEG C, the sulfuration time is 1-2 minutes, after discharging and cooling, the anti-tear compression-resisting cable sheath material for coal mine is obtained. The anti-tear compression-resisting cable sheath material for coal mine has the advantages of heatproof performance, excellent anti-tear performance, low anti-compression deformation, low production cost and good economic benefit.

The invention discloses a durable heat-insulating and sun-shading automotive pad. The pad comprises a middle anti-tear fabric layer, wherein an outer reflecting layer is arranged on the outer surface of the middle anti-tear fabric layer, an inner reflecting layer is arranged on the inner surface of the middle anti-tear fabric layer, the outer reflecting layer and the middle anti-tear fabric layer are bonded through an adhesive, and the inner reflecting layer and the middle anti-tear fabric layer are bonded through the adhesive; the middle anti-tear fabric layer is woven by high-strength yarn which is formed by combining and twisting 45-55 aramid fibers, 10-13 carbon fibers and 15-20 glass fibers. With adoption of the scheme, the durable heat-insulating and sun-shading automotive pad is simple and reasonable in structure, good in anti-tear performance and long in service life.

The invention discloses a preparation method of clean, ecological and degradable PVC decorative artificial leather. The artificial leather is prepared from ecological PVC slurry, and the ecological slurry is prepared from the following components: PVC resin powder, vinyl chloride-vinyl acetate resin, diacetyl epoxy soybean glyceryl oleate, a polycaprolactone-based polyurethane elastomer, a foamingagent, epoxidized soybean oil, modified attapulgite, a lubricant, silicone masterbatch, a stabilizer and pigment. The artificial leather prepared with the treatment process is non-toxic, environmentally friendly and good in degradability and has good wear resistance.

The invention discloses a heavy-duty solid tire tread compound. The heavy-duty solid tire tread compound comprises the following raw materials in pars by weight: 40-60 parts of natural rubber; 10-18 parts of nitrile rubber; 2-6 parts of carbon black N115; 3-4 parts of white carbon black; 2-6 parts of polybutadiene; 4-8 parts of nano titanium dioxide; 3-5 parts of a vulcanizing agent; 3-6 parts ofan antioxidant; 5-10 parts of hydroxyethyl acrylate; 1-2.6 parts of an accelerator, and 2-4 parts of a coupling agent. The compound solves the problem that the traditional tire is easy to puncture ona heavy-duty vehicle, and the compound enhances the tear resistance and the wear resistance of the tire, and has the advantages of long service life and good elasticity, and the brake does not generate long marks.

The invention relates to a high tear resistance fluorosilicone rubber composition and a preparation method of the composition and belongs to the technical field of rubber. The fluorosilicone rubber composition comprises the following substances in parts by mass: 100 parts of raw fluorosilicone rubber, 40-60 parts of fumed silica, 3-5 parts of fluororesin containing micropowder, 5-10 parts of whiskers, 0.5-1.5 parts of valcanizer and 3-5 parts of structure controller. The prepared fluorosilicone rubber composition has good tear resistance at room temperature and high temperature; and a formingrate of a product of the fluorosilicone rubber composition can be also increased. The invention further provides the preparation method of the composition. The preparation method comprises 2 steps, and is scientific, reasonable, simple and easy.

The invention relates to the technical field of a macromolecular material, in particular to a cable sheath material. The cable sheath material is prepared from the following raw materials in parts by weight: 50 to 95 parts of chlorinated polyethylene, 20 to 35 parts of phenolic resin, 10 to 20 parts of nitrile rubber, 5 to 15 parts of ammonium polyphosphate, 5 to 16 parts of carbon fiber, 6 to 10 parts of copper ammonia fiber, 4 to 10 parts of maleic anhydride grafted polyethylene, 2 to 7 parts of calcium stearate, 2 to 6 parts of carbon black, 1 to 6 parts of asbestos, 10 to 15 parts of nylon, 5 to 12 parts of zeolite powder, 5 to 10 parts of calcium silicate and 2 to 8 parts of silane coupling agents. The cable sheath material has the advantages of excellent mechanical performance, good anti-tearing performance, good tensile intensity, excellent anti-aging performance and long service life.

The invention relates to a modified polyester hot melt adhesive and a preparation method thereof. The modified polyester hot melt adhesive is prepared from components in parts by weight as follows: 40-70 parts of a polyester hot melt adhesive, 30-50 parts of a polyamide based organic silicon thermoplastic elastomer, 0.5-1 part of an antioxidant 164 and 1-3 parts of an auxiliary. The polyamide based organic silicon thermoplastic elastomer and organic bentonite are jointly adopted to modify the polyester hot melt adhesive, and the polyamide based organic silicon thermoplastic elastomer has high tensile strength and low-temperature impact strength, good tear resistance and good chemical resistance; the organic bentonite has good thixotropy and chemical stability, proper quantities of the polyamide based organic silicon thermoplastic elastomer and the organic bentonite are added, promote each other and have a synergistic effect, efficient modification of the polyester hot melt adhesive is realized, the low-temperature toughness, the aging resistance and the anti-stripping performance of the polyester hot melt adhesive can be remarkably improved, the processing performance is excellent, the bonding strength to metal-epoxy resin is high, and repeated processing performance for residual leftover materials is good.

The invention discloses a method for preparing a low-toxicity BOPP adhesive tape. The method comprises the following operation steps: (1) performing extruding granulation on polypropylene resin, melamine cyanurate, colopholic acid, erucyl amide and titanium dioxide by an extruder to prepare master batches, and then making the master batches into a BOPP film; and (2) brushing the BOPP film with a prepared low-toxicity glue, and performing slitting and winding after the glue is completely dry to prepare an end product. The prepared low-toxicity BOPP adhesive tape is transparent in appearance, uniform in color, strong in bonding strength, resistant to piecing and good in tearing resistance, particularly, cannot give out pungent smells, is non-toxic and environment-friendly, and can be used in large scale in the food package industry.

The invention relates to a thermoplastic elastomer material, and a preparation method thereof. The thermoplastic elastomer material comprises 70 parts to 90 parts of polyolefin alloy thermoplastic elastomer, 3 parts to 13 parts of maleic anhydride grafted polypropylene, 1 part to 10 parts of a mineral filler, 0.1 parts to 0.5 parts of an ultraviolet absorber, 2 parts to 6 parts of a lubricant and0.5 part to 1 part of modified polyethylene wax. Mutual cooperation of the raw material components is achieved, and it is found through experiment determination that the thermoplastic elastomer material is excellent in wear resistance and tear resistance.

The invention belongs to the technical field of packaging materials, and discloses a high-strength tear-resistant PE (polyethylene) film as well as a preparation method and application thereof. The PE film sequentially comprises an inner layer, a middle layer and an outer layer, the inner layer comprises the following raw materials: linear low-density polyethylene, low-density polyethylene and first metallocene polyethylene; the middle layer comprises the following raw materials: second metallocene polyethylene, medium density polyethylene and high density polyethylene; the outer layer comprises the following raw materials: second metallocene polyethylene, medium-density polyethylene and low-density polyethylene; the density of the first metallocene polyethylene is 0.916 to 0.920 g / cm < 3 >, and the melt index of the first metallocene polyethylene is 0.9 to 1.1 g / 10min; and the density of the second metallocene polyethylene is 0.925-0.929 g / cm < 3 >, and the melt index is 1.2-1.4 g / 10 min. The PE film has excellent longitudinal and transverse tensile strength, has the characteristic of tear resistance, and can be applied to preparation of high-strength packaging bags.

The invention discloses a water-resistant and high-adhesive-force adhesive for a PVC inflatable boat and capable of achieving fast drying under room temperature. The adhesive is prepared by a component A and a component B, wherein the component A comprises epoxy resin, mica powder, modified polyvinyl chloride paste, vinyl chloride-vinyl acetate resin and silicon dioxide; the component B comprisesboron trifluoride glycerin complex, triethylene glycol, silicon dioxide, modified bismaleimide, boron trifluoride aniline complex, phosphoric acid and a promoter M. The adhesive prepared by the processing process is high in bonding strength, short in curing time, fast in film forming, high in heat sealing strength, wide in application range, excellent in performance, convenient to use, fast in curing and high in bonding strength under slightly high temperature.

The invention discloses a protective film material for asphalt pavement during road construction. The protective film material sequentially comprises a first polyethylene terephthalate (PET) layer, afirst styrene-butadiene-styrene (SBS) layer, a second PET layer, a first styrene-isoprene-styrene (SIS) layer, a first polyethylene layer, a second polyethylene layer, a second SBS layer and a third PET layer from inside to outside, wherein the first PET layer has a first melt flow rate based on ASTM-D-1238 test, the first SBS layer has a second melt flow rate based on ASTM-D-1238 test, the secondPET layer has a third melt flow rate based on ASTM-D-1238 test, the first SIS layer has a fourth melt flow rate based on ASTM-D-1238 test, the first polyethylene layer has a fifth melt flow rate based on ASTM-D-1238 test, the second polyethylene layer has a sixth melt flow rate based on ASTM-D-1238 test, the second SBS layer has a seventh melt flow rate based on ASTM-D-1238 test, and the third PET layer has an eighth melt flow rate based on ASTM-D-1238 test. The protective film material disclosed by the invention is good in tear resistance and high in heat sealing strength and can well protect an asphalt construction pavement.

The invention discloses a compound micro flow channel medicine-loading air bag hemostatic device and a using method thereof. The device comprises a medicine-loading air bag and a non-return valve, wherein the center of one end of the medicine-loading air bag is provided with a central hole; a boss is arranged at the end part, with the central hole, of the medicine-loading air bag in the longitudinal direction of the medicine-loading air bag; a medicine injecting hole is formed in the boss. The method comprises the steps that the medicine-loading air bag is inserted into a wound, gas enters aninner cavity of the medicine-loading air bag through the non-return valve, the medicine-loading air bag expands for hemostasis by compression on the wound; a medicine flows to each annular medicine-loading chamber via a first channel, and is conveyed to the surface of the wound via transfusion through holes to achieve secondary hemostasis. The device has the advantages of simple structure, simpleoperation and the like, and is particularly suitable for wounds of different depths, has the function of secondary hemostasis, and has high promotion value.

The invention discloses an anti-tear anti-deformation silicone rubber material for a windscreen wiper. The material is prepared from, by weight, 75-85 parts of methyl silicone rubber, 45-55 parts of polyglycolic acid, 5-10 parts of disulphide diisopropyl xanthate, 10-14 parts of epichlorohydrin rubber, 5-8 parts of graphite, 3-8 parts of aluminum hydroxide, 2-8 parts of palmitic acid, 2-5 parts of dibutyl tin diacetate, 5-8 parts of dibutyltin dilaurate, 10-15 parts of white carbon black, 8-15 parts of calcium stearate, 3-5 parts of stannous octoate, 5-10 parts of sodium carboxymethylcellulose, 35-55 parts of water and 2-8 parts of hexynol. The anti-tear anti-deformation silicone rubber material for the windscreen wiper is excellent in anti-tear property, small in compressive deformation, low in production cost and high in economic benefits.

The invention relates to the technical field of tires, in particular to high-wear-resistance solid tire tread rubber and a preparation method thereof. The high-wear-resistance solid tire tread rubbercomprises the following raw materials in parts by weight: 40-60 parts of epoxidized natural rubber, 20-30 parts of butadiene rubber, 8-10 parts of tread rubber powder, 20-30 parts of white carbon black, 1-3 parts of white carbon black dispersant, 5-15 parts of coal tar resin, 1-3 parts of zinc oxide, 2-4 parts of stearic acid, 0.5-0.8 part of N-phenyl-2-naphthylamine, 1-3 parts of anti-aging agent, 5-10 parts of silane coupling agent, 8-15 parts of cashew nut shell oil, 1-2 parts ofsulphur, 0.2-0.5 parts of triethanolamine, 0.1-0.2 parts of phthalic anhydride, 1-3 parts of sorbitol, 2-6 partsof butyl methacrylate and 2-5 parts of N-hydroxymethyl acrylamide. According to the tire tread prepared from the high-wear-resistance solid tire tread rubber, the wear resistance and the puncture resistance of a tire are improved, and the surface strength and the tear resistance of the tire tread are excellent.

The invention discloses a tear-resistant sole material and a manufacturing method thereof. The tear-resistant sole material comprises the following components in parts by weight: 55-65 parts of natural rubber; 35 to 45 parts of EPDM; 4-6 parts of a compatilizer; 40-50 parts of a filler, 3-4 parts of activated zinc oxide; 1.5 to 2 parts of stearic acid; 2-4 parts of a foaming agent; 2.5 to 3 partsof vulcanizing agent; 0.3 to 0.6 part of an accelerant; and 0.2 to 0.4 part of an anti-aging agent; a preparation process of the compatilizer comprises the following steps: mixing 10-12 parts by weight of brominated butyl rubber and 0.2-0.3 part by weight of BPO, heating to 60-70 DEG C, mixing for 15-20 minutes, adding 0.5-0.7 part by weight of octadecyltrimethoxysilane, heating to 110-120 DEG C,continuously mixing for 10-15 minutes, cooling, and discharging to obtain the compatilizer. The tear-resistant sole material can meetthe anti-skid requirements ofsoles ondry surfaces andwet surfaces,the quality far exceeds the national standard, and the prepared soles are good in tear resistance and wear-resistant compared with other types of anti-skid soles, and wearing durability is achieved.

The invention belongs to the technical field of riding pants, and particularly relates to female riding pants which are characterized in that a trouser pocket is arranged on the outer side of the outer surface layer of a right trouser leg, an elastic band is connected to the upper portion of the outer surface layer of the right trouser leg, a lantern ring is fixed to the outer side of the elastic band, a bandage is arranged in the lantern ring, and a first hook-and-loop fastener is mounted on the outer side of the bandage; the bottom of the outer surface layer of the right trouser leg is provided with trouser legs, the outer side of the outer surface layer of the right trouser leg is provided with a zipper, the edge side of the zipper is provided with a zipper head, the outer side of the zipper head is provided with a pull rod, and the first fixing block is fixed to the outer side of the outer surface layer of the right trouser leg. A connecting belt is installed above the first fixing block, and a second fixing block is arranged at the end of the connecting belt. The women's riding pants can be conveniently prevented from slipping off from the human body, the anti-tearing effect is good, the service life is long, the air permeability is high, and the wearing comfort of the riding pants is improved.