250results about How to "Reasonable preparation" patented technology

The invention relates to an application method of a three-dimensional scanning technology in building engineering based on a BIM. The method comprises the steps of scanning a construction site and surroundings through the three-dimensional scanning technology, and generating data; establishing a BIM three-dimensional model of the construction site and the surroundings; guiding site construction through the BIM three-dimensional model of the construction site and the surroundings; establishing a BIM three-dimensional model of design paper; establishing a BIM three-dimensional model of a finished process; comparing the BIM three-dimensional model of the design paper with the CAD model of the paper of a designing institute or the BIM three-dimensional model of the design paper; and modifying or perfecting the finished process if there are deficiencies or defects.

The water soluble soldering flux specially for lead-free soldering material consists of boric acid and organic acid activator 5.0-10.0 wt%, non-ionic surfactant or cationic surfactant 0.1-1.0 wt%, co-solvent 8.0-20.0 wt%, filming agent 0.1-1.0 wt%, corrosion retardant 0.1-0.5 wt%, except deionized water. The compounding process includes the following steps: mixing co-solvent and partial deionized water, adding filming agent under stirring, adding the rest deionized water, activator and surfactant after dissolving, adding corrosion retardant while stirring to dissolve, stilling, and filtering to obtain the filtrate as the soldering flux. The water soluble soldering flux has excellent soldering assisting performance on lead-free soldering material, environment friendship and other advantages.

The invention relates to a scaling powder, especially applying to the alloy's department such as SnAgCu, SnAgCuRE and SnAg and so on. The quality percent of the present invention is the activation dosage of the organic acid which consists of the duality acid, the three-member acid, the hydroxyl acid, the balminess acid in the fattiness race 4-30wt%,the changed capable colophony which is one or more mixed of the converged colophony, the hydrogen sulfide colophony and the divergent colophony 29-67wt%, the becoming electuary which is one or more mixed of the assembled glycol2000,the assembled glycol4000 and the assembled glycol6000 1-20wt%,the olefin as the tranquilization dosage 0.5-8wt%,the touched and altered dosage which one or more mixed of the hydrogen sulfide castor oil and the compound of the acyl and amine 1-8wt% and the remain is the impregnant of the high boiling point which is one or more mixed of the butyl dissolved fine dosage, the calorie certain alcohol of the cymene and the calorie certain alcohol of the second radicle. The invention doesn't contain the halogen and penetrate the copper mirror after welding. It has high insulated resistances, the excellent function of the assisting burning. Also it solves the problem of oxidation in the high temperature and the appropriate viscosity of the welding cream.

The invention discloses an organic high molecular composite flocculant which is mainly used for municipally or industrially dewatering sludge and a preparation method thereof, which solve the problems of complex treatment process, agent waste, secondary pollution and the like existing in the prior art. The flocculant comprises polyacrylamide, polydimethyldiallylammonium chloride and modified starch serving as raw materials and the dry weight ratio of polyacrylamide to polydimethyldiallylammonium chloride to modified starch is 4-9:0.5-5:0.5-5, wherein tap water or de-ionized water is used as a dispersing agent; and the liquid organic high molecular composite flocculant, of which the molecular weight is 4,000,000 to 12,000,000, the ionization degree is 40 to 80 percent and the effective content of the raw material is 1 to 5 percent based on dry weight, is prepared by dispersing the materials in a reactor at the temperature of between 10 and 50 DEG C with stirring and compounding for 0.5 to 3 hours. The flocculant has the advantages of sufficient raw material sources, low cost, simple process flow, stable performance and high suspension separation speed, is reasonably prepared and quickly dissolved and is safe to operate, and convenient to use, saves the amount, obviously improves the dehydration efficiency, expands the application range, prevents fluctuation of treatment effect and reduces secondary pollution.

The invention relates to a hybrid fiber pultruded composite material, and a preparation method and a molding device thereof, which solve the technical problems in the conventional product and the conventional method that the coaxiality and circularity of the product are low and that the heat resistance of the product cannot meet requirements because of the low glass transition temperature of a substrate resin system. The hybrid fiber pultruded composite material comprises an inner core layer and an outer shell layer, wherein the inner core layer consists of a plurality of beams of unidirectionally arranged carbon fiber composite materials; the outer shell layer consists of a plurality of beams of unidirectionally arranged glass fiber composite materials; the outer shell layer is uniformlyclad outside the inner core layer; the inner core layer and the outer shell layer have circular sections; the outer shell layer is uniformly distributed around the inner core layer in parallel along an axial direction; the two layers are kept highly coaxial; and the inner core layer has the diameter of 6 to 8mm, and the outer shell layer has the thickness of 2 to 4mm. By the preparation method and the molding device for the hybrid fiber pultruded composite material provided by the invention, the prepared product has strong strength, low dead weight, high toughness, low high temperature sag and high corrosion resistance.

The invention discloses a water-soluble flux for a lead-free solder. The water-soluble flux comprises the following components in percentage by weight: 2 to 5 percent of organic acid activating agent, 0.5 to 1 percent of surfactant, 0.2 to 1 percent of film forming agent, 10 to 15 percent of cosolvent, 0.1 to 0.5 percent of antifoaming agent, 0.05 to 0.35 percent of stabilizing agent, 0.1 to 0.5 percent of corrosion inhibitor and the balance of deionized water. The water-soluble flux special for the lead-free solder can be effectively matched with the lead-free solder and is particularly suitable for a lead-free solder which is used for a low-cost high-performance microelectronic package and consists of the following components in percentage by weight: 0.5 to 1 percent of Ag, 0.3 to 0.7 percent of Cu, 1 to 3 percent of Bi, 0.0002 to 0.0005 percent of P, 0.01 to 1 percent of Ce, 0.01 to 0.15 percent of Ni and the balance of Sn. The flux has high wetting capacity on the lead-free solder, can enhance the solderability of the lead-free solder, can meet the requirement of soldering temperatures of the lead-free solder, has a low corrosion effect on lead-free solder alloy and a small number of residues after soldering, and can be cleanly washed by water; and a dried circuit board has higher insulation resistance.

The present invention relates to a traditional Chinese medicine composition of a sleep helping and nerves calming medicine-filled pillow, which belongs to the field of bed health care products. The composition comprises the following materials in weight portion: 20 to 30 portions of ginseng, 20 to 30 portions of angelica, 20 to 30 portions of caulis polygoni multiflori, 15 to 25 portions of grassleaved sweetflag rhizome, 20 to 30 portions of uncaria, 25 to 35 portions of radix salviae miltiorrhizae, 20 to 40 portions of albizzia julibrissin, 30 to 40 portions of spina date seed, 30 to 40 portions of semen biotae shelled, 20 to 30 portions of licorice, 25 to 35 portions of senega, 20 to 30 portions of safflower, 30 to 40 portions of mulberry leaves, 30 to 40 portions of Gynostemma pentaphylla, 20 to 40 portions of lily and 20 to 30 portions of poria cum radix pini. The traditional Chinese medicine composition of the sleep helping and nerves calming medicine-filled pillow has no toxic side effects on a human body, completely adopts pure natural products as materials, enhances the vigor of the human body in sleeping state, nourishes heart and blood, calms nerves, relaxes veins, and improves immunity. Particularly, the composition is suitable for the symptoms such as sleeplessness, dreaminess, short sleep, vexation, forgettery, hardness to fall asleep, and the like.

The invention discloses a functional nutriment for promoting lactation and recuperation of postpartum women, which is characterized by comprising the following raw materials: marine proteins, papaya, calcium preparations, dried marine algae powder, jujube powder, olive oil, casein phosphopeptides and active probiotics. The functional nutriment is powder, an effervescent tablet or suspension. The invention also discloses a method for preparing the functional nutriment into different forms. The functional nutriment is basically suitable for the postpartum women, has reasonably prepared nutrient components, enhances the effects of the active components, has high quality proteins, is abundant in unsaturated fatty acid, has certain galactagogue effect, is easy to digest and absorb, can improve the immunity of the body and promote recuperation of the body, has certain effect on stabilizing the emotion, is beneficial to relieving postpartum depression and better ensures recuperation and the health of the postpartum women while promoting lactation, and the predigesting and comprehensively balanced nutrition of the functional nutriment is beneficial to organic regulation of the body functions of the postpartum women.

The invention relates to the technical field of pesticides and discloses a plant and animal-derived green environment-friendly pesticide and a preparation method thereof. The green environment-friendly pesticide is composed of wild plants, edible crops and animal bile, wherein the wild plants comprise Datura stramonium, castor seed and herba hydrocotylis wilfordi, the edible crops comprise king capsicum, garlic, Sichuan pepper and berberine, and the animal bile is fish bile, chicken bile or pig bile. The preparation method comprises the following steps: washing, crushing and squeezing the wild plants, carrying out chemical examination and extraction of alkaloid and screening out moisture impurities; washing and juicing or soaking the edible crops; washing an animal gallbladder and broking the animal gallbladder to obtain bile; and carrying out mixing and uniform stirring to obtain the pesticide. The pesticide prepared in the invention has bactericidal and anti-decay effects and the advantages of reasonable preparation, a cheap price, convenience in usage, capacity of being both sprayed and poured, no residual poison, no pollution, greenness and environment-friendliness and is applicable to poisoning of a variety of insects on a variety of plants like wheat, corn, cotton, fruit trees, vegetable, fruit and flowers and trees.

The invention relates to a novel technics for separating metal materials from non-metallic materials by crushing the composite materials. The composite materials containing metal and non-metallic materials is first transmitted through manual force or a belt transmission device into a crusher and is broken into coarse materials which are transmitted into a breaking and separating host through a cyclone separator, a coarse material storage hopper and a spiral feeder; the bottom of the breaking and separating host recycles the metal powder, while the top of the breaking and separating host is used for transmitting powder with the metal powder as the main constituent; the powder is then underwent a series processions such as transmission, multi-stage separation, grading, dust removal, recycling and waste gas purification through a grader, a crushing system cyclone separator, a pulse cartridge dust collector, a high-pressure fan, a waste gas treatment washing tower and a negative-pressure pipeline. The novel technics provided by the invention has optimized procession, energy conservation and consumption reduction, large capacity, high metal recovery, environmental protection and significant economic benefits.

The invention provides a mutton tenderizing agent. The comprised raw materials and weight proportion are as follows: sodium pyrophosphate 1-1.5 unit, sodium tripolyphosphate 2.5-3.0 unit, sodium-hexametaphosphate 1-1.5 unit and chloride calcium 1.5-2.0 unit. The utilization method comprises steps: preparing 10% solution with dinking water with said tenderizing agent, the amount is 4.5-5.0g per kg mutton tenderizing agent, injecting the solution into mutton evenly, messaging mutton for 2-3 times, 60-90 minutes for each time, the interval between two message is 20-28 hours. The tenderizing agent can distinctively reduces mutton shearing force, and thus the tenderness of cooked mutton is much better, the shearing force is reduced from 35.36N to 27.27N, about 25%.

The invention discloses a fabric capable of color changing. The fabric capable of the color changing is composed of a surface layer and a base layer, wherein the surface layer is made of fabric materials which are capable of color changing, good in abrasion resistance and good in air breathing performance, the fabric materials of the surface layer are composed of color changing fibers, polyamide fibers and bamboo fibers, the base layer is made of fabric materials which are soft, warm keeping, and air breathing, the fabric materials of the base layer is composed of polyester fibers, imported long staple cotton and acrylics, and the fabric materials of the surface layer and the fabric materials of the base layer are prepared through a double-side machine woven process. According to the fabric capable of color changing, the raw materials of the fabric capable of color changing are in reasonable proportion, the design of the structure is simple, different colors can be shown along with the temperature change of outer environment, and the fabric capable of color changing is suitable for making fashion color changing clothes or military disguise clothes.

A tea is prepared from 7 Chinese-medicinal materials including Momordica grosvenori flower, cassia seed, wolfberry fruit, liquorice root, etc. It can prevent and treat angiosclerosis and hypertesion with a certain curative effect.

The invention discloses sustained-release chlorine dioxide powder applicable to purifying indoor air. The formula of the sustained-release chlorine dioxide powder mainly comprises the following components in percentage by weight: 5-10 percent of a chlorine dioxide precursor, 12-20 percent of an activating agent, 5-10 percent of a sustained-releasing agent, 12-20 percent of gel, 43-47 percent of packing and 5-10 percent of activated carbon. The sustained-release chlorine dioxide powder can be used as air purifiers to remove formaldehyde, benzene series and the like in the air, and the chlorine dioxide released by the powder can be used for effectively oxidizing the formaldehyde in the indoor air, and no secondary pollutants generate in the oxidizing process, so that the sustained-release chlorine dioxide powder has an excellent application prospect in the fields of household environmental friendliness, healthy epidemic prevention and the like.

The invention relates to a soil amendment, which is composed of the following components by mass percent: 15% of ammonium sulfate, 10% of ammonium chloride, 5% of monoammonium phosphate, 10% of potassium chloride, 5% of magnesium sulfate, 45% of sodium humate, 0.1% of compound sodium nitrophenolate, 5% of calcium powder, 1% of alkaloid and 5% of calcium superphosphate. The soil amendment of the present invention has the advantages of reasonable preparation and good dissolvability, which can effectively improve soil structure, soil property and soil fertility, thereby effectively solving various problems of soil, benefiting for crop growth, and realizing high, stable and good yield of crops with good soil state.

The invention discloses a fragrant immobilized granular activation-free chlorine dioxide air purifying agent and belongs to the field of environmental purification. The air purifying agent includes following components: a solidifying agent, a chlorine dioxide generating substance, spices, a coloring agent, a slow-releasing agent, a filling agent and the like. A preparation method includes the steps of material preparation, grinding, drying, sieving, mixing and moulding. The air purifying agent can effectively kill bacteria, virus, chemical toxins and residual pesticides and the like harmful substances. The air purifying agent is convenient to use, is simple in operation, is significant in effects, is long-acting, safe and long-shelf-life, and has wide application prospect in the fields of household environments, medical care and health care, hygiene and epidemic prevention and the like.

The invention belongs to the technical field of oil improvement, and especially relates to a soil improvement agent. The soil improvement agent is prepared from, by weight, 20 to 25 parts of dolomite powder, 19 to 22 parts of flyash, 13 to 16 parts of powdered rock phosphate, 12 to 15 parts of peat, 8 to 10 parts of food residue, 7 to 9 parts of polypropylene glycol, 6 to 10 parts of humic acid, 5 to 8 parts of livestock manure, 4 to 8 parts of leguminous green manure, and 0.5 to 1 part of dendrobium. The soil improvement agent is reasonable in formula, is capable of improving soil physical structure effectively, reducing soil volume weight, improving soil water content, changing soil chemical properties, adjusting all conditions or a part of conditions including soil water, fertilizer, gas, and heat, and improving soil fertility.

The invention discloses a ginger virus-free breeding method. The ginger virus-free breeding method comprises the following steps: (1) preparing ginger virus-free seedlings; (2) amplifying reproductionof the ginger virus-free seedlings; and (3) transplanting and domesticating, namely transplanting a large number of ginger virus-free seedlings obtained in the step (2) into a culture medium, and culturing for 1-2 weeks at the temperature of 20-28 DEG C, wherein the culture medium is a mixture obtained by mixing perlite, peat soil and a biological bacterial fertilizer in a volume ratio of (1-2):(3-5):(0.3-0.8), concentrations of nitrogen, phosphorus and potassium in earlier stage culture are 60-100mg / L, 20-40mg / L and 100-150mg / L respectively, concentrations of nitrogen, phosphorus and potassium in later stage are 200-220mg / L, 20-40mg / L and 200-250mg / L respectively, and a fertilizer is applied once a week. The ginger virus-free breeding method disclosed by the invention has the advantagesthat various parameters of the whole breeding process are studied, the optimized parameters are combined together, and virus-free percent, survival rate and yield of ginger can be effectively improvedwhile breeding period of the ginger is shortened.

The invention discloses high yield and high efficiency health culture feed of tilapia and a preparation method thereof. The feed comprises, by weight, 30 to 50 portions of protein powder, 10 to 18 portions of soybean meal, 6 to 12 portions of peanut meal, 8 to 14 portions corn, 4 to 7 portions of cottonseed meal, 5 to 8 portions of rapeseed meal, 10 to 16 portions of high-gluten flour, 1.8 to 3 portions of vitamins, 1 to 2 portions of amino acids, 1 to 1.8 portions of trace elements, 5 to 8 portions of vegetable oil, 1 to 2 portions of an attractant and 0.6 to 0.9 portions of a dolphin streptococcal biological preparation. The feed is prepared through drying, pulverizing, mixing and drying. The feed has a reasonable formula, is rich in nutrients, can increase the feed intake of tilapia suffering from streptococcal diseases, increases the growth rate, enhances the immune functions, reduces the death rate of tilapia suffering from streptococcal diseases and improves the cure rate of the streptococcal diseases.

The invention discloses an inductive heat treatment method of a low-speed large-torque drive axle and relates to the technical field of inductive heat treatment. The method comprises the specific steps as follows: an annular inductor and a quenching liquid spraying device are installed; a transformer ratio and the capacitance are determined; a run program is formulated according to specific technical requirements for a part; the part is clamped; a zero position and the rotational speed of the part are determined; an electrical parameter is adjusted and determined in coordination with the run program; an automatic run button is started, and the inductive heat treatment is performed on the part with a two-step method, that is, the first step is preheating, continuous heating is only performed in the annular inductor when the whole part is displaced from the head end to the tail end up and down, and the second step is to perform liquid spray cooling on the part to realize quenching of the part and the like while the part is heated in a manner identical with the first time. According to the inductive heat treatment method, the requirement for inductive heat treatment of the drive axle simultaneously provided with four structural types, namely, a rack, a keyway, steps and a spline is met; and the method in simple and reliable in operation, easy to implement, stable in quality and high in efficiency and has high application values.

The invention discloses slow-release chlorine dioxide sterilizing and purifying powder; the formula of the slow-release chlorine dioxide sterilizing and purifying powder contains the following components in percentage by weight: 5-10% of a chloride dioxide precursor, 12-20% of an activating agent, 5-10% of a slow-release agent, 12-20% of gels, 43-47% of filler and 5-10% of an inert agent. The preparation method of the slow-release chlorine dioxide sterilizing and purifying powder comprises the steps of preparing materials, drying, mixing, etc. The preparation method is quite simple in operating process, and is especially suitable for industrial mass production; the preparation cost is low; the slow-release chlorine dioxide sterilizing and purifying powder can remove use of such air purifiers as formaldehyde and benzene series in air; the sterilizing and purifying powder has a good application prospect in the fields of household environmental protection, health and vaccination, etc., and has such advantages as easiness for storage and long shelf life; and the sterilizing and purifying powder is suitable for being widely popularized and used.

The invention discloses a predictor-corrector technology-based power loss calculation method of a grid in the future operation mode. The method comprises the following steps: performing the analysis and calculation of routine power flow according to the referenced grid power flow, determining an initial grid loss rate coefficient; then loading all kinds of planning data to preliminarily form a future operation mode of the grid, predicting the size of grid loss according to the grid loss rate coefficient in prediction stage, determining the total variation of bus loads, decomposing the total variation to each bus load; in the grid loss correction stage, adopting the computing mode of a multi-slack machine to perform the analysis and calculation of routine power flow, correcting the deviation of grid loss estimation, adopting the iteration of the prediction stage and the correction stage to finally obtain the calculation result of grid loss. By adopting the method of the invention, more accurate grid loss calculated value can be finally obtained to replace the former and approximate estimation value, thus more accurate operation mode of the grid can be obtained in the grid management planning and the safety and economy of the operation of the grid can be increased.

A vegetable antioxidation cleaning fluid comprises the following components by weight: 100 parts of mountain spring water, 5 parts of modified corn starch, 2 parts of tea (green tea) water, 2 parts of raw ginger juice, 1.5 part of soda ash, 0.5 part of purple sweet potato anthocyanins, 2 parts of honeysuckle water extract, 0.5 part of citric acid, 0.5 part of salt, 0.5 part of liquor, 0.05 part of vitamin C, 1 part of soy isolated protein, 1.5 parts of lotus leaf water extract and 5 parts of perfume; the vegetable antioxidation cleaning fluid is used for washing sweet potato stem and leaf, can play the purpose of sterilization, disinfection, and impurity removal; the vegetable antioxidation cleaning fluid is reasonable in configuration, simple in composition, and low in cost, can effectively prevent the oxidation of purple potato leaf, keeps original colour and lustre, and can keep the processed purple potato leaf in original taste and flavor.

The invention provides a blueberry cultivation medium modifier. Fermentation raw materials of the modifier include sulfur and organic materials such as farm manure, mushroom dregs and plant debris. The blueberry cultivation medium modifier is reasonable in raw material preparation, the pH (potential of hydrogen) value of the blueberry cultivation medium modifier prepared by fermentation ranges from 4.7 to 5.5, water-holding capacity is 200-250%, the content of organic matters is 45-65%, and volume weight is 2.0g / cm<3>. The blueberry cultivation medium modifier serving as a soil modifier can increase soil organic matters, improve soil structures, loosen soil, promote root system development and keep water and nutrients in the soil, and the modified soil can meet the requirements of blueberry growth and development. When the blueberry cultivation medium modifier serves as a blueberry cultivation soil modifier, cost is about 1500 Yuan per mu and greatly reduced.

The invention relates to a method for preparing medicinal granules for removing fat, reducing blood pressure and tranquilizing in the field of health care medicinal granules. The technical proposal of the method comprises the following raw materials in weight portion: 15 to 25 portions of apocynum, 10 to 15 portions of eucommia bark, 10 to 15 portions of polygonatum, 10 to 15 portions of semen cassiae, 15 to 25 portions of glossy ganoderma, 10 to 20 portions of chrysanthemum, 10 to 20 portions of hawkthorn, 10 to 20 portions of flos albiziae, 10 to 20 portions of spine date seed, 10 to 20 portions of caulis polygoni multiflori, 15 to 20 portions of salvia miltiorrhiza and 10 to 20 portions of liquorice. The method has reasonable preparation and an accurate formula, has the effects of tranquilizing, reducing blood pressure, promoting blood circulation, dissipating blood stasis, clearing heat away, detoxicating and improving immunity, has good curative effect on high blood pressure, high blood fat, insomnia, more dreams and other symptoms and overcomes the disadvantages that the prior medicine cures symptoms but does not cure root causes; and through 200 cases of hypertensive patients who take the medicinal granules, the primary healing rate reaches as high as 85 percent.

An energy-saving gas burner is composed of a gas seat with fire cover, air mixing tube under the gas seat, and gas nozzle under air mixing tube. It features that the internal and the external gas chambers are formed between gas seat and fire cover. Its advantages are compact structure, high utilization rate, full combustion, and no return fire when it is closed.

The invention discloses a preparation method of slow-release chlorine dioxide powder; the preparation method disclosed by the invention comprises the steps of preparing for materials, drying, mixing and the like; the preparation method is very simple in operation process and low in manufacture cost and is particularly applied to large-scale industrial production; the slow-release chlorine dioxide powder prepared by using the preparation method disclosed by the invention comprises the following components in percentage by weight: 5-10% of chlorine dioxide precursor, 12-20% of an activating agent, 5-10% of a slow-release agent, 12-20% of a gel, 43-47% of a filler, and 5-10% of an inert agent; the slow-release chlorine dioxide powder can be used as an air purifying agent for eliminating formaldehyde, benzene series and the like in air, and has good application prospect in the fields of home furnishing environmental protection, health epidemic prevention and the like; furthermore, the slow-release chlorine dioxide powder prepared by the invention also has the advantages of being easy to store, long in expiration date and the like and is suitable for being popularized and used widely.

The invention discloses a method for pickling a special cucumber pickle. The pickle is prepared by pickling cucumbers, white spirit, ginger, soy sauce, peanut oil, foeniculum vulgare, pepper, monosodium glutamate, sugar, chillies and salt in percentage by weight. The method has the advantages of simple process and reasonable preparation, and the product has the characteristics of rich nutrition, luscious taste, easiness of storage, fresh, crisp, fragrant, hot and salty tastes, and the like. What is more, the pickle has a prevention effect on the H1N1 influenza A spread in the world.

The invention discloses a shape-preserving and ironing-free garment fabric. The fabric consists of a surface layer and an inner layer, wherein the fabric of the surface layer adopts composite fibers, polyamide fibers and T400 fibers are blended to form the composite fibers, the inner layer is a multi-component fiber blended fabric, high-count long stapled cotton staples, polyester filaments and bamboo fibers are bended to form the blended fabric, and a water jet loom is adopted to weave the surface layer and the inner layer of the fabric. The material preparation of the shape-preserving and ironing-free garment fabric disclosed by the invention is reasonable, the preparation steps are scientific and effective, and are easy to implement, the special double-layered structure ensures that the fabric not only can permanently preserve the shape, is ironing-free and is easy to maintain but also has the properties of moisture absorption, air permeation, comfort, straightness and good elastic recoverability, and therefore the shape-preserving and ironing-free garment fabric is an ideal fabric for the making of casual wear, formal wear and other garments.