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470results about How to "Improve breathability" patented technology

Method for preparing polyolefin microporous membrane with symmetrical upper and lower surface structures

ActiveCN101724170ASymmetrical structureImprove breathabilityFlat articlesDomestic articlesPolyolefinAir knife
The invention provides a method for preparing a polyolefin microporous membrane with symmetrical upper and lower surface structures. The method comprises the following steps of: 1) mixing polyolefin resin with a diluting agent in a weight ratio of 1-6:4-9; 2) extruding the mixture by a neck ring mold in an extrusion flow-casting mode and performing cold rolling and strip casting to obtain a thick sheet; 3) preheating the thick sheet and stretching the preheated thick sheet longitudinally and transversely; 4) shaping the stretched thick sheet; 5) extracting the diluting agent and drying the thick sheet; 6) stretching the thick sheet transversely and shaping the stretched thick sheet; and 7) winding the shaped thick sheet. For the polyolefin microporous membrane prepared by the process steps, the upper and lower two surfaces of the thick sheet are particularly provided with a set of rollers with the same diameter respectively, or one side of an air knife is provided with a set of the rollers on a conventional cold roller and an air knife auxiliary patch device to obtain the thick sheet in an auxiliary cooling mode, and then, the thick sheet is stretched and extracted to finally obtain a product with symmetrical and uniform upper and lower surface microporous structures and good ventilation property. Furthermore, warping deformation phenomenon is prevented.
Owner:SHENZHEN SENIOR TECH MATERIAL

Effect-increasing loss-control agent for fertilizer and preparation method thereof

ActiveCN102992906AIncrease the granular structureImprove breathabilityAgriculture gas emission reductionFertilizer mixturesChemistryUtilization factor
The invention belongs to the fertilizer field and discloses an effect-increasing loss-control agent for fertilizers and a preparation method thereof. The agent is composed of a nitrogen nitrification inhibitor, a biological fermentation compound amino acid, a soil conditioner, an active-layer-shaped phyllosilicate and a compound microelement, wherein the nitrogen nitrification inhibitor can control resolution drain of ammonium nitrogen; the biological fermentation compound amino acid can absorb ammoniacal nitrogen, reduce volatilization loss, and stimulate plant root growth and absorption and utilization of nutrients; the soil conditioner can free soil, increase granular structure of the soil, form a net structure with the active-layer-shaped phyllosilicate through and bridging to reduce fertilizer nutrient loss, absorb and exchange NH4+ and K+, and improve the breathability, water-retaining property and nutrient-retaining property of the soil, therefore the nutrient utilization is improved, the nitrogen loss is reduced, and the effectiveness of the nitrogenous fertilizer is improved. Potted plants and field fertilizer efficiency tests show that the agent can improve the fertilizer nutrient utilization remarkably and increase the volume and income of crops.
Owner:安徽帝元生物科技有限公司

Cotton padding and preparation method thereof

The invention relates to a cotton padding, which comprises a cotton padding core, gauze screens and non-woven fabrics. Both upper surface and lower surface of the cotton padding core are provided with a layer of gauze screen and a layer of non-woven fabric in turn; the peripheries of the non-woven fabrics arranged on the upper surface and the lower surface are integrally quilted along the peripheral boundaries of the cotton padding core; the cotton padding core consists of the following components: cotton, hollow fibers, low-melting-point fibers and natural bamboo fibers; and the hollow fibers are at least one of far infrared hollow polyester short fibers, antibacterial polyester hollow fibers, bamboo carbon hollow polyester fibers, three-dimensional crimped hollow fibers and seven-hole polyester fibers. A preparation method comprises the following steps of: mixing, opening, combing, processing by using a random roller, paving, compacting, processing at a constant temperature, shaping, laying a net, rubbing, and reshaping. The components are reasonably proportioned, the processing technology is simple, and the prepared cotton padding has the characteristics of no caking, bacteria resistance and inhibition, health care, moisture absorption and air permeability, and is soft and fluffy and suitable for industrial production.
Owner:HUNAN PROVINCE CHANGSHA CITY AIWANTING HOME TEXTILES

Undergrowth cultivation medium and cultivation method for anoectochilus formosanus

The invention relates to an undergrowth cultivation medium and cultivation method for anoectochilus formosanus. The undergrowth cultivation method for the anoectochilus formosanus comprises the steps of (1) selecting a forest environment with a natural shading degree of 60-90% and illumination intensity of 2000-5000lux to serve as a cultivation place of the anoectochilus formosanus; (2) forming shallow holes in the cultivation substrate in a scratched mode, inserting the root of each anoectochilus formosanus seedling into each shallow hole, covering each root, and watering rooting water; (3) adjusting air humidity to be 75-90%, adjusting the temperature to be 15-30DEG C; (4) forming the cultivation medium, wherein the cultivation medium mainly comprises 8-23 parts of wood chip smashed objects, 8-25 parts of differentiated yellow loam and 65-80 parts of under-forest humus soil in a mixing mode; and (5) carrying out spraying watering when the surface of the cultivation medium whites after planting, and stopping watering when the cultivation medium is thoroughly watered every time. According to the undergrowth cultivation medium and cultivation method for the anoectochilus formosanus, due to the facts that the forest environment which is in natural growth and has the appropriate shading effect serves as the cultivation base, and the high-quality and high-efficiency cultivation medium is selected, growth of the anoectochilus formosanus is facilitated, the yield, the survival rate and the drying rate of the anoectochilus formosanus can be remarkably improved, operation is convenient, and production cost is low.
Owner:福建省农业科学院农业生物资源研究所

Method for increasing permeability of low-permeability coal seam by means of deep-hole directional pre-splitting blasting

ActiveCN103321669AImprove breathabilityImprove gas extraction efficiencyFluid removalGas removalCoalEngineering
The invention discloses a method for increasing the permeability of a low-permeability coal seam by means of deep-hole directional pre-splitting blasting. The method includes constructing large-diameter blast holes in the high-gassy low-permeability coal seam in a conventional operation mode; using four-way perpendicular joint-cutting pipes as blasting explosive charging pipes and water bag charging pipes; arranging the four-way perpendicular joint-cutting pipes loaded with explosive cartridges and the four-way perpendicular joint-cutting pipes loaded with water bags at intervals to fill explosive into the blast holes, and detonating the explosive in each blast hole by double detonating fuses to complete operation for increasing the permeability of the low-permeability thick coal seam. Longitudinal cut joints are respectively circumferentially formed at a 0-degree position, a 90-degree position, a 180-degree position and a 270-degree position of each four-way perpendicular joint-cutting pipe. The method has the advantages that crack networks which are communicated with one another can be formed in the coal seam after blasting, the permeability of the low-permeability high-gassy coal seam can be improved, a gas extraction effect is guaranteed, the gas extraction efficiency is high, and gas disaster accidents can be prevented to a certain degree.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Coal seam gas fracturing and mash gas driving method

The invention relates to a coal seam gas fracturing and mash gas driving method, which comprises two stages including a hole sealing fracturing stage and a mash gas driving stage. According to the method, firstly, hole drilling construction is performed in a coal seam; then, a high-pressure rubber pipe is embedded in a drilling hole, and hole sealing is performed; any one drilling hole is selected as a fracturing drilling hole; high-pressure gas is injected into the fracturing drilling hole; the coal seam is fractured through gas pressure energy; the gas permeability of the coal seam is improved; and other drilling holes around the fracturing drilling hole are subjected to mash gas extraction when the high-pressure gas is injected into the fracturing drilling hole. Under the condition of non-ideal gas fracturing effects caused by high coal hardness or great ground stress and the like, high-pressure water can be firstly used for fracturing, and then, high-pressure gas is introduced into the hole; and meanwhile, the drilling holes around the fracturing drilling hole are subjected to mash gas extraction. The method has the advantages that the adsorption performance differences of coal bodies on the mash gas and the fracturing gas are considered; the gas fracturing effect is combined with the mash gas driving effect; the mash gas extraction efficiency can be effectively improved; the number of mash gas extraction holes is reduced; and the inhibiting effect of water on mash gas deabsorption is reduced. The method is simple; safety and reliability are realized; and the effect is good.
Owner:CHINA UNIV OF MINING & TECH

Antibacterial-type nanofiber-based preservative film and preparation method thereof

The invention discloses an antibacterial-type nanofiber-based preservative film and a preparation method thereof. The novel antibacterial-type nanofiber-based preservative film which has the excellent mechanical property, can be completely degraded and completely meets the physical performance requirements of preservative films is prepared by taking micro-fibrillated nanocellulose (MFC) and chitosan as raw materials; the preservative film is prepared mainly through the step that ultrasonic blending is performed on the micro-fibrillated nanocellulose (MFC) and an aqueous acetic acid solution of chitosan under the appropriate proportion condition. Compared with a food preservation material on the market, the antibacterial-type nanofiber-based preservative film has the advantages that the production technology is simple, and the preparation cost is low; the preservative film also has the advantages of being efficient, antibacterial, high in air permeability, transparency, bonding property, skin film flexibility and wear resistance and the like, is a new-generation green and environment-friendly type preservative film for replacing an existing plastic preservative film, can serve as a material for packaging food and has the wide application prospect in the field of food packaging films.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Orthosis manufacturing method with macroscopic-microcosmic integration feature

ActiveCN105662681AWith microscopic voidsImprove breathabilityMedical scienceThree dimensional modelManufacturing efficiency
The invention provides an orthosis manufacturing method with a macroscopic-microcosmic integration feature. A diseased part is scanned with three-dimensional equipment to acquire surface profile data of the diseased part, a three-dimensional model of the diseased part is rebuilt, then a digital entity model of orthosis is generated, the macroscopic morphology of the orthosis is designed and optimized, the target gap morphology is determined according to the conditions such as the variety, the breathability requirement and the weight of the orthosis, and then the orthosis with a plurality of gaps which are arranged transversally and longitudinally and mutually communicated is generated on the basis of the macroscopic morphology of the orthosis. The orthosis manufactured through the method has the optimized macroscopic morphology and microcosmic gap structure, is good in breathability and small in weight and has the individuality, the aesthetics and the reasonability, the orthosis entity is directly printed through a three-dimensional printing technique, the manufacturing efficiency is high, and manufacturing is more excellent; meanwhile, the orthosis is beneficial for early recovery of a patient by adding medicine for promoting recovery and orthosis and a lubricating agent for improving contact face friction in the microcosmic gaps.
Owner:国家康复辅具研究中心

Molding sand for automatic production line and preparation method thereof

The invention provides molding sand for an automatic production line. The molding sand is prepared from the following raw materials in parts by weight: 60-70 parts of returned sand, 180-190 parts of fresh sand, 40-50 parts of pottery clay, 30-40 parts of pulverized coal, 40-45 parts of sodium bentonite, 20-30 parts of calcium bentonite, 4-6 parts of sodium borate, 2-4 parts of aluminum oxide, 2-4 parts of calcium oxide, 14-18 parts of flour, 20-25 parts of iron ore concentrate powder, 20-40 parts of clay, 5-8 parts of foot oil, 2-3 parts of soybean oil and a proper amount of water. The molding sand prepared by carrying out high-temperature calcination on the sand, the fresh sand, the pottery clay and the like in combination with the dispersion and grinding of the foot oil and the like has excellent air permeability, smoothness, mobility, toughness and plasticity. Meanwhile, by using the pulverized coal, the casting burnt-on sand phenomenon is reduced, and the brightness of castings is greatly improved. Compared with conventional molding sand, the molding sand has the advantages that the using amount of the pulverized coal is reduced; and the collapsibility of the molding sand is improved by using the flour and the iron ore concentrate powder. The molding sand has strong mobility, good air permeability and relatively high viscosity and is suitable for automatic molding line production.
Owner:CHANGLI FORGING

Paper filter material containing polyester fibers for cigarette filter tip and preparation method thereof

The invention provides a paper filter material containing polyester fibers for a cigarette filter tip and a preparation method thereof. The paper filter material comprises 10-90% of polyester fibers and the balance of wood pulp fibers or non-wood pulp fibers and also comprises a functional additive accounting for 0.1-5wt% of the polyester fibers and a coating material accounting for 0.1-5wt% of the paper filter material, wherein the polyester fibers are polyethylene terephthalate fibers or polylactic acid fibers or poly(beta-hydroxybutyrate) (beta-PHB) fibers or poly(butylenesuccinate) fibers; the wood pulp fibers are neddle wood pulp fibers or/and hardwood pulp fibers; the functional additive is water-soluble polymer material or polypeptide, and the polypeptide is plant polypeptide or animal polypeptide. The preparation method comprises the following steps: adding the functional additive into the polyester fibers, and jordaning to obtain a polyester fiber slurry; then respectively blending the polyester fiber slurry with the respectively prepared non-wood pulp fiber slurry or wood pulp fiber slurry in a blending tank; utilizing a paper making machine to make paper with pulp and shape, dehydrating and performing primary drying to obtain dry paper; coating the coating material accounting for 0.1-5wt% of the dry paper onto the surface of the paper; and performing secondary drying, thus obtaining the paper filter material provided by the invention. According to the invention, the range of available fiber raw materials for making the paper filter material is enlarged, the paper performance is improved, and the influence of the paper filter material on the smoking quality of cigarettes can be reduced.
Owner:YUNNAN REASCEND TOBACCO TECH GRP

Production method of square porous zoological environmental-friendly sterilized nutrition pot

The invention discloses a production method of a square porous zoological environmental-friendly sterilized nutrition pot. The technical scheme of the invention has the following key points: the production method comprises the following steps of uniformly stirring and mixing the zoological environmental-friendly nutrition soil, cement and biogas slurry, subsequently feeding into a block molding machine to be compressed to a semi-finished product of the square porous zoological environmental-friendly sterilized nutrition pot, after being dried naturally, feeding the semi-finished product into a low temperature kiln to be sterilized and disinfected, and cooling and subsequently packaging into a finished product of the square porous zoological environmental-friendly sterilized nutrition pot.The square porous zoological environmental-friendly sterilized nutrition pot is provided with 4-64 grooves, so that the utilization rate of the nutrition pot is increased greatly, the working intensity of workers is reduced, and the enterprise benefits are increased. By adjusting the production formula, a nutrition pot which can be degraded into common soil within 1-5 years can be produced, so that the nutrition pot is low-carbon, environmental-friendly and pollution-free, and is a high quality environmental-friendly sterilized nutrition pot which is complete in nutrition ingredient, high in fertilization effect, non-toxic, harmless and odorless, and thus the method is applicable for producing square porous zoological environment-friendly sterilized nutrition pots.
Owner:江苏农盛废弃物循环再利用有限公司 +1
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