50results about How to "High tear strength" patented technology

The utility model discloses a sheet metal part drilling fine adjustment mechanism relates to sheet metal part drilling field, the utility model discloses a first electric sliding table, and the output of first electric sliding table is equipped with the first sliding seat, and the top of first sliding seat is installed with second electric sliding table, and the output of second electric sliding table is equipped with the second sliding seat. The utility model discloses through being provided with the shielding cloth, first bolt, second bolt, first side plate and second side plate, the top of first electric sliding table and second electric sliding table can be shielded by the shielding cloth, prevent the direct drop of debris to the top of first electric sliding table and second electric sliding table, thereby prevent the hard debris (such as metal scrap) and cause the sliding seat to be stuck in the clearance between electric sliding table and sliding seat and affect the movement of sliding seat, to ensure that the sliding seat can move smoothly, prevent the sliding seat to push the debris movement simultaneously and make the debris and the top of electric sliding table rub and scratch the top surface of electric sliding table, thereby prolong the service life of electric sliding table.

This invention relates to the field of nitrile butadiene rubber (NBR) technology, and discloses a biodegradable NBR, its preparation method, and its application in gloves. The biodegradable NBR of this invention comprises 60-80 parts by weight of NBR, 3-6 parts by weight of filler, 1.2-1.8 parts by weight of vulcanizing agent, 20-40 parts by weight of polylactic acid (PLA), and 5-12 parts by weight of cyanopolyester. The cyanopolyester of this invention improves the compatibility between PLA and NBR, resulting in a thermoplastic PLA-NBR composite material with higher tensile strength and tear strength, exhibiting excellent mechanical properties. The cyanopolyester's main chain contains a large number of biodegradable ester groups, and the addition of biodegradable PLA further enhances the biodegradability of the NBR material, making it more environmentally friendly and suitable for practical applications in biodegradable gloves.

This invention discloses a waterproof and anti-corrosion waterstop for construction joints and its preparation method, relating to the field of engineering waterstop technology. This invention improves upon traditional waterstops by preventing them from gradually hardening, becoming brittle, or losing their elastic recovery ability during long-term use, thus ensuring that the material maintains high tear strength and elongation at break even after aging, overcoming the shortcomings of insufficient anti-aging synergy in traditional technologies.

The invention relates to the technical field of building waterproof composite materials, in particular to an organic silicon modified resin building waterproof composite material and a preparation method thereof. Comprising a waterproof roll and a waterproof coating arranged on the surface of the waterproof roll, the waterproof coating is prepared from the following components in parts by weight: 20 to 32 parts of silane modified polyether, 15 to 30 parts of organic silicon modified resin, 5 to 10 parts of polysaccharide-based composite polylactic acid, 8 to 12 parts of plasticizer, 1 to 3 parts of curing agent, 0.5 to 2 parts of titanium dioxide and 0.5 to 3 parts of water removal agent. An organic silicon structure in the prepared waterproof composite material has the characteristic of low surface energy, so that the surface of a coating presents strong hydrophobicity, and liquid water permeation is effectively blocked; the waterproof coating can be matched with a compact cross-linked network structure to form a continuous and seamless waterproof film, realizes high hydrostatic pressure resistance and low water absorption, and is suitable for key waterproof parts such as roofs, basements and toilets.

The application discloses a drainage bag with an antibacterial functional layer and a preparation process thereof, and relates to the technical field of medical materials, and comprises the following steps: adding modified montmorillonite into N, N'-dimethylacetamide, uniformly mixing through ultrasonic, adding a polyurethane film, ultrasonic immersion for 60-120 min, drying, and obtaining a drainage bag substrate; adding polylactic acid into N, N-dimethylformamide, uniformly stirring and mixing, adding modified nano zinc oxide, uniformly mixing through ultrasonic, and then performing electrospinning to obtain an antibacterial coating fiber film; placing the antibacterial coating fiber film on the inner side surface of the drainage bag substrate, high-frequency heat sealing, assembling, and obtaining the drainage bag.

The present invention provides a secondary barrier for liquefied gas storage tank, characterized by comprising: a blocking layer containing (a) metal or (b) one or more polymers selected from the group consisting of polyethylene, polyethylene terephthalate, polyvinyl alcohol, ethylene-vinyl alcohol copolymer, and nylon; and a fiber layer laminated on both sides of the blocking layer, containing one or more fibers selected from the group consisting of glass fiber, polyethylene fiber, poly-p-phenylene benzobisoxazole fiber (PBO), aramid fiber, and carbon fiber, the fiber layer being fixed by an adhesive layer suitable for surface properties.

This invention relates to the field of interior decoration materials, specifically to a paper-based tear-resistant substrate and its preparation method. A method for preparing a paper-textured tear-resistant substrate includes the following steps: S1: preparing a paper-textured slurry; S2: applying the paper-textured slurry to the surface of a non-woven fabric substrate in multiple steps; S3: heating and shaping with a pressure roller, and cooling to obtain a composite substrate; the paper-textured slurry, by weight, includes: 20-30 parts of water-based acrylic resin emulsion, 10-15 parts of water-based polyurethane emulsion, 1-8 parts of modified starch adhesive, 15-25 parts of kaolin, 10-15 parts of heavy calcium carbonate, 5-10 parts of titanium dioxide, 3-5 parts of shell powder, 0.5-2 parts of nanocellulose, 0.5-1 part of dispersant, 0.1-0.5 parts of polyether-modified organosilicon, and water, wherein the amount of water added makes the solid content of the paper-textured slurry 35-50%; the obtained substrate has a paper-textured feel, which facilitates ink adhesion and high-precision printing, and has good tear resistance.

This invention belongs to the field of polymer materials technology, specifically relating to a tear-resistant polyethylene release liner, its preparation method, and its application. The tear-resistant polyethylene release liner comprises the following raw materials in parts by weight: 20-28 parts low-density polyethylene, 18-20 parts high-density polyethylene, 15-22 parts ultra-low-density polyethylene, 3-8 parts polyolefin elastomer, 8-15 parts ethylene copolymer, 2-4 parts maleic anhydride-grafted polyethylene, 12-18 parts linear low-density polyethylene, 0.5-1.0 parts plasticizer, 0.4-0.7 parts oleamide, and 1.5-3.0 parts modified nano-silica. The release liner of this invention simultaneously possesses high tensile strength, high elongation at break, and high right-angle tear strength, and can be reused more than 20 times.

This invention discloses a single-layer soft dental membrane and method for dental treatment or oral protection, belonging to the field of dental materials technology. The membrane is made of thermoplastic polyurethane elastomer (TPU) with a microphase separation structure and a hydrophilic modified layer containing polydopamine and hydrophilic polymer on its surface. The membrane has a Shore hardness of 75A-90A, a tensile strength of 15-50MPa, an elongation at break ≥500%, and a thickness of 0.5-6.0mm. The preparation method includes TPU drying, extrusion molding, plasma treatment, and hydrophilic coating impregnation reaction. The membrane of this invention has flexibility, durability, antibacterial properties, and high transparency, and its comprehensive performance is superior to that of existing EVA membranes. It can be used in dental whitening trays, sports mouthguards, or oral ulcer protection patches.

The invention belongs to the technical field of knitted bags, and particularly relates to a knitted bag processing method and a knitted bag thereof.The knitted bag processing method comprises the following steps that S1, a first knitted material and a second knitted material for the knitted bag are selected, the first knitted material is soaked in a first functional treatment solution, and the second knitted material is soaked in a second functional treatment solution; s2, drying the first knitted material and the second knitted material which are impregnated; s3, the dried first knitting material is used for knitting of the bottom area of the knitted bag, the dried second knitting material is used for knitting of the side face area of the knitted bag, and a knitted bag body with the zoning function characteristic is obtained through integrated forming. According to the difference of use requirements of different parts of the knitted bag, two kinds of functional treatment liquid are adopted for carrying out differentiation treatment on bottom and side face materials, and integrated functional partition of bottom strengthening wear resistance and side face emphasized protection is achieved. According to the design, the overall portability and breathability are guaranteed, and meanwhile the durability and the easy-to-care performance of all the areas are improved in a targeted mode.

This invention discloses a method for preparing a high tear-resistant and impermeable material. The method includes the following steps: 1) treating a mesh fabric with a base fabric protectant to obtain mesh fabric A; 2) placing mesh fabric A in an environment of 75-80℃ to dry the moisture; 3) applying polyether PU adhesive A to mesh fabric A; 4) applying polyether PU adhesive B to mesh fabric B; 5) laminating mesh fabric C with a resin material through a casting or calendering process, and then heat-sealing both sides of the mesh fabric width after casting to further prevent liquid penetration. This invention treats the mesh fabric with a base fabric protectant to first protect the yarn, which reduces the penetration of PU adhesive and improves the tear strength of the product; by treating the edges of the yarn with resin, it protects them and improves the impermeability of the material.

The invention discloses hydrogel mask fiber base cloth containing banana components and a preparation method of the hydrogel mask fiber base cloth, and relates to the technical field of mask fiber base cloth. The method comprises the following steps: preparing banana stem fiber microcrystals, low-esterification-degree banana peel pectin and a banana active stock solution; carrying out hydrophobic modification on fiber microcrystals, and blending with polylactic acid, cellulose diacetate and the like to prepare a reinforced spinning precursor; performing electrostatic spinning and hot-press shaping to obtain fiber base cloth; secondly, introducing 2-hydroxyethyl methylacrylate and acrylic acid into the base cloth through chemical grafting, and curing with a banana peel pectin solution and calcium chloride in sequence to obtain modified hydrophilic base cloth; finally, the base cloth is soaked in the banana active stock solution, and the hydrogel mask fiber base cloth is prepared through vacuum loading, quick freezing and freeze drying. According to the invention, all components of bananas are fully utilized, and the prepared base cloth has good mechanical strength, hydrophilicity and biocompatibility, is environment-friendly and has comprehensive effects.

This invention discloses a white, smooth-surface rubber extrusion tube and its preparation method. Using EPDM rubber as the matrix, activators, softeners, reinforcing fillers, modified phenolic resin, lubricants, white pigments, coupling agents, and vulcanization accelerators are added. These materials are mixed in a rubber mixing mill to form a mixed elastomer, which is then extruded into a pre-formed rubber tube in an extruder. The tube is then vulcanized in a vulcanizing tank to become the final product. Extruded rubber products (except silicone) are generally black, mainly because carbon black has good compatibility with rubber, which is beneficial for extrusion. Light-colored or white extruded rubber products often have poor compatibility with the fillers, resulting in rough surfaces or incomplete extrusion. This invention solves the problem of rough surfaces or incomplete pre-forming in light-colored or white rubber extrusion products, meeting different customer needs and enriching the diversity and choice of product colors.

This application relates to a stator slot oil-cooled insulation structure and drive motor based on foaming inhibitor control, belonging to the technical field of drive motors, including stator cores and oil-cooled insulation structures. This application utilizes an oil-cooled insulation structure, specifically internal foamed insulation paper that can be combined with epoxy resin strips to form rectangular protruding ends. This creates oil guide grooves between adjacent rectangular protruding ends to facilitate the transfer of cooling oil, thereby achieving efficient oil cooling of the stator windings. Furthermore, the inner recessed end of the rectangular protruding end is also provided with a foamed layer, which expands upon heating to ensure tight contact with the stator windings, achieving a sealed connection and preventing oil leakage. Simultaneously, the foamed insulation paper, through the arrangement of its internal layers, further enhances oil cooling and insulation effects, and through the cooperation of the substrate layer, improves structural strength and extends service life. This significantly improves the heat dissipation and service life of the drive motor.

This invention provides an environmentally friendly rubber additive based on corn cobs, its preparation method, and its application, belonging to the field of rubber additive technology. The preparation method of this invention uses corn cobs as the sole core raw material. Corn cob powder is treated with an acidic solution to obtain filter residue A; filter residue A is treated with an alkaline solution to obtain lignin solution and cellulose; cellulose is enzymatically hydrolyzed to obtain glucose; glucose undergoes isomerization and dehydration reactions to obtain 5-hydroxymethylfurfural; the lignin solution is acid-precipitated and then subjected to amination or phenolation modification to obtain modified lignin; 5-hydroxymethylfurfural and modified lignin undergo a condensation reaction under the action of an acidic catalyst to obtain the environmentally friendly rubber additive. The preparation method of this invention achieves full resource utilization, producing a rubber additive with good environmental performance, high reactivity, and excellent adhesive properties, reducing dependence on petrochemical raw materials and reducing environmental pollutant emissions.

This invention discloses a biomass-based energy-absorbing buffer panel, its preparation method, and its application. The biomass-based energy-absorbing buffer panel comprises an energy-absorbing layer, carbon fiber reinforcement layers located on both sides of the energy-absorbing layer, and an adhesive layer between the energy-absorbing layer and the carbon fiber reinforcement layers; the energy-absorbing layer contains biomass polyurethane, and the carbon fiber reinforcement layers contain carbon fibers and furan-based polyester. This biomass-based energy-absorbing buffer panel exhibits excellent cushioning effect and mechanical properties, and is environmentally friendly.

The invention provides a high-flexibility tear-resistant epoxy structural adhesive as well as a preparation method and application thereof. The epoxy structural adhesive is prepared by mixing a component A and a component B, on the basis of the total weight of the component A, the component A comprises the following components in percentage by weight: 34-70% of modified epoxy resin, 5-30% of bisphenol A type epoxy resin, 2-6% of benzyl alcohol, 8-15% of an epoxy reactive diluent, 0.2-1.5% of a defoaming agent, 1-5% of a thixotropic agent, 5-40% of filler and 1-4% of epoxy color paste; on the basis of the total weight of the component B, the component B comprises the following components in percentage by weight: 55-75% of polyether amine, 5-15% of bisphenol A epoxy resin, 5-10% of benzyl alcohol and 10-20% of dodecylphenol. The mixing mass ratio of the component A to the component B is (3.7-7): 1. The modified epoxy resin and the bisphenol A epoxy resin are compounded, and an optimized curing system is combined, so that the flexibility and the tear resistance of the structural adhesive are remarkably improved while the high strength of the epoxy resin is maintained, and the structural adhesive is suitable for structural bonding in the fields of buildings, automobiles, electronics and the like.

The utility model relates to the technical field of floating disc structures, in particular to a full-liquid-receiving steel single-disc inner floating disc which comprises an inner floating disc body, an outer reinforcing ring, an inner reinforcing ring and an inner floating basin, an inner preformed hole is formed in the position of an inner shaft core of the inner floating disc body, and the inner floating basin is arranged in the inner preformed hole in a sleeved mode. An inner reinforcing ring is welded to the top of the inner floating disc body and located on the outer side of the inner floating basin, an outer reinforcing ring is welded to the periphery of the inner reinforcing ring, and reinforcing plates are welded between the inner reinforcing ring and the outer reinforcing ring at equal intervals. Mounting holes are formed in the positions, located on the periphery of the outer reinforcing ring, of the inner floating disc body at equal intervals, hollow cylinders are fixedly arranged in the mounting holes in a sleeved mode, and a sealing ring is arranged on the edge of the outer side of the inner floating disc body in a bonded and sleeved mode. According to the steel single-disc inner floating disc, the buoyancy of the steel single-disc inner floating disc is effectively increased, the steel single-disc inner floating disc can stably float on the liquid level in an oil tank for a long time in a full-liquid-receiving mode, the sealing performance of the inner floating disc body and the inner wall of the oil tank is improved, and the situation that gaps are reserved, and the using effect is affected is avoided.

This application discloses a toughened high-barrier PHA composite material and its preparation method. The raw materials of the composite material include: 100 parts of PHA copolymer, 1-3 parts of isocyanate chain extender, 10-20 parts of hydroxyl-containing acrylate copolymer, 5-10 parts of cross-linked acrylate copolymer, 3-10 parts of hydrophobic modified filler, 0.1-1 parts of catalyst, 0.5-2 parts of nucleating agent, and 0.1-5 parts of other additives. The raw material monomers of the hydroxyl-containing acrylate copolymer include: soft monomers, hydroxyl acrylates, and hard monomers. The raw material monomers of the cross-linked acrylate copolymer include: soft monomers, divinylbenzene, epoxy acrylates, and hard monomers. This application can significantly improve the elongation at break, tear strength, and impact strength of PHA materials to meet the application requirements of durable biodegradable PHA products.

This invention belongs to the technical field of graphene and functional rubber composites, specifically a simplified preparation process for high tear strength graphene-modified natural rubber based on an interpenetrating double crosslinked network structure constructed with two vulcanizing agents. This invention uses two vulcanizing agents: sulfur and peroxide. Sulfur rapidly forms a high-density carbon-sulfur crosslinked network (-C-Sx-C-) in the natural rubber composite, constituting the mechanical load-bearing skeleton between the natural rubber main chains, imparting high tear strength and fatigue resistance. Peroxide has a relatively slow vulcanization rate, and it slowly decomposes at lower temperatures to generate free radicals, constructing a stable -C-C- secondary crosslinked network between the terminal segments of the carbon-sulfur main network outside the sulfur vulcanization skeleton network. This improves the three-dimensional structural integrity of the vulcanization network, reduces the loss modulus of the rubber, and thus reduces heat generation during dynamic compression. This invention effectively improves the tear strength of natural rubber vulcanizates through the synergistic effect of nanofiller reinforcement and the interpenetrating double crosslinked network structure.

The invention discloses macromolecular memory rubber for a puncture-resistant and leakage-proof tire, and relates to the technical field of macromolecular rubber materials. The material is composed of a basic rubber component, a reinforced filling component, a memory function component, a leak-proof function component and an auxiliary component, and synergistic reinforcement among the components is realized through a multi-stage internal mixing process. In the preparation process, a gradient heating mixing technology is adopted, and after plastication, dynamic vulcanization and compression molding, the composite rubber material with a three-dimensional network structure is formed. The finished rubber product has the characteristics of high strength, high toughness and self-repairing, the area of a punctured hole can be closed by more than or equal to 85% within 24 hours, the tire pressure drop amplitude is stably controlled within 5% after continuous puncturing for 10 times, and the shock resistance and the driving safety of a tire are remarkably improved.

This invention relates to a tear-resistant nylon and its preparation method, belonging to the field of polymer materials technology. The tear-resistant nylon comprises, by weight, 65-80 parts nylon resin, 6-15 parts modified carbon fiber, 1-3 parts compatibilizer, 0.3-0.5 parts lubricant, 0.15-0.25 parts antioxidant, and 4-10 parts toughening agent. This invention uses a silane coupling agent KH550 to modify the carbon fiber. On the one hand, this increases the compatibility between the carbon fiber and the nylon resin; on the other hand, the organic functional groups in the silane coupling agent KH550 can react with the amino and carboxyl groups in the nylon resin, physically entangle with the nylon molecular chains, and enhance the bonding force, thus increasing the tear resistance of the nylon resin. This invention uses carbon fibers with a length of 8-10 mm. The carbon fibers interweave in the nylon resin to build a three-dimensional network structure as a skeleton, dispersing stress and increasing the tear resistance of the nylon resin. Simultaneously, the longer carbon fibers can also intertwine, further increasing the tear resistance of the nylon.

This invention relates to the field of polyurea technology and discloses an antistatic waterborne polyurea coating and its preparation method, comprising component A (100 parts by weight of terminal isocyanate prepolymer); component B (6.8-13.7 parts by weight of diamine chain extender, 42-60 parts by weight of polyvinylpyrrolidone copolymer, and 1-4 parts by weight of PVP-modified carbon nanotubes). After modification with PVP dispersant, the carbon nanotubes exhibit better dispersibility in the waterborne polyurea coating, forming a uniform conductive and thermally conductive network, thus improving antistatic and thermal conductivity, while also enhancing the mechanical properties of the polyurea. The polyvinylpyrrolidone copolymer contains hydrophilic carboxyl and amino groups, exhibiting excellent dispersibility in the waterborne polyurea coating. Furthermore, the amino groups can react with the isocyanate groups of the terminal isocyanate prepolymer, thereby forming a three-dimensional chemical crosslinking effect, which synergistically enhances the tensile and tear strength of the polyurea coating.

This invention belongs to the technical field of agricultural greenhouse film materials, specifically relating to a polyvinylidene fluoride (PVDF) greenhouse film and its preparation method. The resin raw material for film formation is a compound of copolymer PVDF resin I and copolymer PVDF resin II; wherein the copolymer PVDF resin I accounts for 10-30% by weight, and the copolymer PVDF resin II accounts for 70-90% by weight. The preparation of this PVDF greenhouse film involves compounding two different copolymer PVDF resins in a certain proportion as film-forming resin raw materials to obtain a single PVDF greenhouse film. The resulting greenhouse film is isotropic, with right-angle tear strength ≥250KN / m in both the MD and TD directions, significantly improving tear strength and processing performance, making it suitable for high-end facility agriculture.

This invention discloses a method for weaving high-strength, high-elasticity warp-knitted fabric, including warping, weaving, degreasing, pre-setting, dyeing, opening, post-setting, and finished product inspection. It employs a four-bar integrated weaving method, wherein the padding yarn method and yarn configuration are as follows: bar GB1 and GB2 use spandex elastic yarn, woven in a mesh structure to form an elastic layer, exposed on both sides of the fabric, forming an anti-slip surface; bar GB3 uses high-elastic nylon yarn, woven in a weft-inserting structure, hidden in the middle of the fabric, while also increasing the fabric's tear strength. The warp-knitted fabric produced using the weaving method provided by this invention has high tensile strength, high modulus, and high recovery rate, giving the garment excellent body-shaping properties. The garment will not expand or loosen with increased wear and washing, and the fabric has good skin-friendly properties, with the fabric surface not easily slipping against the skin.

This invention belongs to the field of tire technology and discloses a sidewall waterproofing line structure suitable for engineering machinery tires, including the tire sidewall and at least one circumferential non-sharp angled protrusion located near the tire bead. This invention uses geometric methods to locate the lower cutting point, placing the waterproofing line in the optimal water-blocking position, solving the problems of inaccurate positioning and unstable effects of traditional methods. The number, spacing, and size parameters of the angled protrusions are optimized to balance protective performance and rolling resistance, preventing mud entanglement and scratches. Precise curvature matching and arc transition eliminate stress concentration, reducing the risk of cracking. The transition area uses 5%-8% carbonized silicone material, increasing tear strength by approximately 25% and significantly enhancing durability, specifically addressing the potential cracking risk in this heavy-load stress concentration area. The open shoulder design, working in conjunction with the waterproofing line, drains water and mud, greatly improving traction and anti-skid capabilities in muddy conditions, making it more suitable for harsh working environments such as mines and construction sites.

The utility model discloses a curtain type safety air bag bag with high inflation reliability. The curtain type safety air bag bag with high inflation reliability comprises an upper air bag piece and a lower air bag piece, the upper air bag piece and the lower air bag piece are stitched to form an air bag cavity, and the air bag cavity is provided with an inflation port. The curtain type safety air bag bag comprises a gas guide reinforcing piece arranged at the inflation port, the gas guide reinforcing piece comprises two first reinforcing pieces and two second reinforcing pieces, the two first reinforcing pieces and the two second reinforcing pieces are located between the upper air bag piece and the lower air bag piece, and the two second reinforcing pieces are located outside the two first reinforcing pieces. The first reinforcing piece has an overlapping part overlapping with the second reinforcing piece and a gas nozzle part extending beyond the second reinforcing piece, the two first reinforcing pieces and the two second reinforcing pieces are stitched at the partial edges of the overlapping part and are provided with gas distribution ports, and the two first reinforcing pieces are respectively stitched with the upper air bag piece and the lower air bag piece at the edges of the gas nozzle part.

The invention relates to the technical field of new materials, in particular to biodegradable filter cloth and a preparation method thereof.The biodegradable filter cloth is prepared from, by weight, polybutylene terephthalate, modified starch, polybutylene adipate, bamboo fibers, maleic anhydride grafted polyolefin elastomer and a lubricant; through the synergistic effect of all the components and the preparation process, the performance of the filter cloth can be optimized, the component compatibility problem is solved through cooperation of the modified starch and the compatilizer, the uniformity and compactness of the material structure are guaranteed through the bamboo fiber pretreatment and gradient melting process, the pore characteristics of the filter cloth are optimized through the segmented spinning and weaving process, and the filter cloth has the advantages of being high in practicability and high in practicability. Finally, the filter cloth simultaneously has excellent mechanical properties, efficient filtering performance and good biodegradability, is suitable for industrial production, and has wide application prospects in the fields of industrial filtration, environment-friendly treatment and the like.

The utility model relates to the technical field of edible mushroom cultivation, and disclose a ventilation and ventilation high -yield fungus bag, including bag body, bag body is formed by the composite of outer layer waterproof membrane and inner layer breathable film, and the bag body side evenly distributes and has the ventilation structure, and the bag body opening is equipped with sealing assembly and filter device, and the bag body bottom is equipped with support base. This ventilation and ventilation high -yield fungus bag is through the composite film structure and multilayer ventilation design, solved the problem that traditional fungus bag is bad, easy to pollute, the problem of moisture -retention effect is not good, realized the dynamic balance of ventilation and moisture retention, significantly improved the output and quality of edible mushroom.