1135results about How to "Good moisture permeability" patented technology

A mattress is constructed from a mattress body having an upper and a lower deck, which is preferably pervious to moisture and air. A removable panel, which includes a top layer of breathable fabric, a bottom layer of a fabric that forms a moisture barrier, and a batting layer, is placed on at least the upper deck of the mattress body. The removable panel is removably attached along the perimeter of the deck or decks by a fastener, such as a zipper. The panel can be removed from the deck for cleaning and folded and secured by the fastener in an inverted configuration, with the top layer facing outward.

A terminally sterilizable container includes a polypropylene bottle having a body with a manually squeezable sidewall and a thickness preventing water loss. The bottle body includes shoulders for providing autoclave produced pressure distribution and deformation resistance along with an elongated tips outfitted to a neck of the body and having a lumen therethrough with a drop dispensing orifice. A cap enclosed the elongated tip and includes enclosed with a nub for sealing the orifice to prevent autoclave produced pressure leaks.

The invention provides a method for preparing synthetic leather and the synthetic leather prepared by the method. The method comprises the following steps: (1) coating slurry containing surface waterborne polyurethane resin on the surface of release paper, and drying to form a finishing coat; (2) mixing and foaming the slurry containing the foaming waterborne polyurethane resin with air by using a foaming machine, and coating the foamed slurry on the surface of the finishing layer, and drying to form a medium foaming layer; and (3) adhering the surface of the foaming layer and a basic fabric by using an adhesive containing waterborne polyurethane resin, and drying. The method uses the waterborne resin foaming layer to replace the Base leather manufacturing process, avoids using toxic and harmful organic solvents, such as dimetbyl formamide (DMF), toluene and the like, solves the pollution problem in the synthetic leather industry, and realizes clean manufacture of the synthetic leather.

The invention discloses a method for manufacturing a fruit and vegetable humidity-adjusting fresh-keeping film. Body paper is prepared through papermaking by means of plant fiber as the raw material and by adding a proper wet strength agent and a proper dry strength agent. The body paper is prepared into the humidity-adjusting fresh-keeping film by coating a mixed glue solution composed of a hydrophilic water-retention natural high-molecular polymer and a water-insoluble, safe and environment-friendly mildew-proof antibacterial agent. The manufacturing method is environmentally friendly and simple, and the special humidity-adjusting fresh-keeping film is used for a fruit and vegetable box with a fresh-keeping function and a refrigerator with the fresh-keeping fruit and vegetable box. The fruit and vegetable humidity-adjusting fresh-keeping film can make fruits and vegetables in the fruit and vegetable box hold moisture and kept fresh when relative humidity is small, moisture permeability is remarkably increased when relative humidity is large, and condensation and rotting are prevented. The humidity-adjusting fresh-keeping film can be completely and naturally degraded.

The invention discloses a porous complex gel-nanofiber oxygen permeation dressing and a preparation method thereof. The method comprises the following steps: obtaining a collagen nanofiber membrane by adopting a collagen solution by virtue of an electrostatic spinning method; performing chemical crosslinking on two natural and non-toxic macromolecule polysaccharides such as chitosan and alginic acid, and preparing complex gel; and preparing the porous sponge-nanofiber double-layer composite material in a freeze-drying mode, wherein the upper gel layer of the dressing is in a sponge state during drying and is in a gel state after moisture absorption. The biological wound dressing is prepared under the condition that any toxic chemical crosslinking agent is not added, the process is simple, and the safety is high. The prepared biological wound dressing disclosed by the invention has the characteristics of excellent oxygen permeation performance, water-absorbing quality, water permeability, moisture penetrability and high biocompatibility, a physiological wet environment of the wound surface can be maintained, wound healing and effective haemostasis are promoted, wound infection can be avoided, the recovery is accelerated, the wound surface can be effectively recovered, and the dressing is applied to multiple wound surfaces such as trauma, burns and ulceration.

The invention relates to waterproof moisture permeation polyurethane paint used for textiles and a preparation method. The waterproof moisture permeation polyurethane paint is prepared from methyl diphenylene diisocyanate, toluene di-isocyanate, polyether glycol (with the molecular weight of 2000), linear dihydroxylated alkylsiloxane (with the molecular weight of 1000), polyester dihydric alcohol (with the molecular weight of 2000), trimethylolpropane, chain extending agents, sealing compounds, dibutyl tin laurate and solvents through the processes of pre-polymerization reaction, chain extension reaction and sealing reaction. The production process is simple, and the products have the advantages of self-crosslinking effect, soft hand feeling, good cold resistance performance, high moisture permeation performance, high water pressure resistance and little reduction after water pressure resistance washing.

The invention discloses three-dimensional jacquard sandwich fabric. The fabric comprises an upper layer structure, a lower layer structure and a middle layer structure, wherein the upper layer structure and the lower layer structure form a transparent bottom cloth which is knitted by transparent micro-thin filaments; the middle layer structure adopts synthetic multi-filaments with certain elasticity as a woven material; the synthetic multi-filaments are combined according to certain patterns, so as to form various floral designs by adopting needle front and needle back migration of a jacquard needle; the fabric surface is exposed through the transparent upper layer bottom cloth and lower layer bottom cloth; the embossing jacquard effect is formed on the surface, thereby generating a good effect of hollow three-dimensional patterns in a three-dimensional structure. The fabric disclosed by the invention is strong in pattern stereo perception, and is mainly applied to the fields such as lady brassieres and shoe materials; the hand feeling, the comfort and the functionality of the fabric are obviously improved.

The invention relates to a waterproof and moisture-permeable coating agent composition, wherein, a certain amount of microporous lignocellulose fine powder is added into the coating agent with waterproof function, so that the coating agent has moisture permeable performance. The waterproof and moisture-permeable coating agent composition which is used as the coating agent for non-woven fabric, knitted fabric or woven fabric can be made into coated fabric and synthetic leather with waterproof and moisture permeable performances. Compared with the prior at, the invention has the advantages that: 1. the raw material is easy to be added, the process is available with high adaptability, no need to add new equipment; 2. on the premise that the waterproof performance is not decreased, the amount of moisture permeated is increased obviously and the anti-adhesion is improved; 3. the coated fabric and superfine fiber and artificial cover synthetic leather made by the invention has the advantages of fine moisture permeability, high resistance to water pressure and that the physical performance does not decrease.

The invention provides a waterproof and moisture permeable membrane which sequentially comprises a nano-fiber hydrophilic layer and a nano-fiber hydrophobic layer. The nano-fiber hydrophilic layer is prepared from a hydrophilic polymer by electrostatic spinning; the nano-fiber hydrophobic layer is prepared from a hydrophobic polymer by electrostatic spinning. The waterproof and moisture permeable membrane provided by the invention has good moisture permeability and air permeability; an experiment result shows that the moisture permeability of the waterproof and moisture permeable membrane provided by the invention can reach 10,000g/m<2>24h, and the air permeability of the waterproof and moisture permeable membrane can reach 0.29mL/cm<2>s. The invention also provides a preparation method of the waterproof and moisture permeable membrane. According to the preparation method provided by the invention, the nano-fiber hydrophilic layer and the nano-fiber hydrophobic layer which are prepared by electrostatic spinning are subjected to hot-pressing compounding, so that the obtained waterproof and moisture permeable membrane has better performance and can be integrally formed without being adhered by an adhesive; the production process is simplified; the waterproof and moisture permeable membrane is easy for industrial production. The invention also provides a waterproof and moisture permeable fabric and a preparation method thereof.

This invention was a public high permeability high waterproof coating fabrics manufacturing methods, including polyurethane polymer, an organic solvent, allocation of water, as agent, crosslinking agents, other agents, water mixed into a fabric coating agents will be made of fabric coated with the coating in uniform as coating on the fabric, Fabric coating agent had dried occasion of the coating for drying processing steps. The invention manufactured coated fabric is not only an excellent waterproof and good moisture permeability but also has good rubbing sex and the feeling of fullness soft features. Product hydrostatic pressure 5000mm H2O over Al permeability to 8000g/m2 . 24hr above Tolerance washing and rubbing. Such coated fabric has broad prospects for sales, which can be used to produce rainwear, breathable, ski clothes, cool suits. Have greater economic and social benefits.

A dressing for the first aid to wound is a composite non-woven cloth consisting of an internal layer made of the mixture of chitosan fibers and alginate fibers, a middle layer made of the hydroscopic fibers mixed with high-hydroscopicity resin, and an external layer made of hydrophobic fibers. Its preparing process is also disclosed.

The invention discloses a moisture-absorption, heat-generating, quick-drying, moisturizing and thermal fabric and a preparation method thereof. The fabric is formed by weaving first yarns, second yarns, third yarns and fourth yarns, wherein the first yarns are regenerated cellulose fiber type blended yarns formed by blending linen, wool or cashmere, one or more types of cotton fibers and regenerated cellulose fibers, or regenerated cellulose multi-filaments, or regenerated cellulose staple fiber yarns; the second yarns are modified polyester fiber yarns with non-circular cross sections; the third yarns are cotton fiber type blended yarns formed by blending one or two of polyester staple fiber yarns or polyacrylonitrile fibers and cotton fibers, or all cotton yarns; the fourth yarns are polyurethane fiber yarns. The moisture absorption and heat-generating value of the fabric exceeds national standards, the moisture absorption and quick-drying performance is excellent, and the thermal insulation rate meets national standards; the fabric also has comfortable elasticity and soft and smooth hand feeling of one surface next to the skin. Meanwhile, the preparation method is simple in process, and convenient to operate.

The invention relates to a polyester composition and its use, wherein the polyester composition contains polyester or polymeric compound with polyester as the main body, and porous material whose content is 0.1-10% of the total weight of the composition. The polyester composition can be used for the preparation of fabrics, thin film and coating composite material, which are obtained through polyester composition extrusion formation and alkaline treatment.

The invention provides a nanofiber membrane. The nanofiber membrane is made of mixture by spinning. The mixture includes polymers and nanofiber materials in the mass ratio of 1:(0.01-0.2). The nanofiber materials are composed of photocatalyst and adsorbent. The adsorbent and the photocatalyst are used in the nanofiber membrane, the adsorbent can adsorb harmful gas in an adsorption chamber, the photocatalyst is capable of degrading and adsorbing harmful organics in holes of the adsorbent into carbon dioxide and water under the condition of indoor light rays and irradiation of a daylight lamp, and activates and regenerates the adsorbent in situ when decomposing the harmful organics on the adsorbent in the meantime, so that the adsorbent and the photocatalyst are reusable, and the nanofiber membrane has excellent air purification capacity. The invention further provides a preparation method of the nanofiber membrane and a nanofiber composite and a preparation method thereof.

The invention provides a preparation method of a nanofiber composite membrane. The method includes the steps that a spinning solution and melt of a high-melting-point polymer are provided, a spinning solution and melt of a low-melting-point polymer are provided, and the melting point difference of the high-melting-point polymer and the low-melting-point polymer is not smaller than 10 DEG C; the spinning solution of the high-melting-point polymer and the spinning solution of the low-melting-point polymer are subjected to electrostatic spinning, and accordingly an electrostatic spinning high-melting-point polymer fiber membrane and an electrostatic spinning low-melting-point polymer fiber membrane are obtained; the low-melting-point polymer melt and the high-melting-point polymer melt are subjected to melt-blowing spinning, so that a melt-blowing spinning low-melting-point polymer fiber membrane and a melt-blowing spinning high-melting-point polymer fiber membrane are obtained; the melt-blowing spinning high-melting-point polymer fiber membrane and the electrostatic spinning low-melting-point polymer fiber membrane undergo composite hot pressing, or the melt-blowing spinning low-melting-point polymer fiber membrane and the electrostatic spinning high-melting-point polymer fiber membrane undergo composite hot pressing, and thus the nanofiber composite membrane is obtained. The nanofiber composite membrane has high tensile strength which reaches up to 22 MPa-32 MPa.

The invention provides a waterproof moisture-penetrable antibacterial anti-ultraviolet waterborne polyurethane material for dry method coating finishing of cotton and terylene textiles and a preparation method of the waterproof moisture-penetrable antibacterial anti-ultraviolet waterborne polyurethane material. The material is obtained by blending waterproof moisture-penetrable waterborne polyurethane resin with silver-loaded nano titanium dioxide accounting for 0.5wt%-10wt% of the resin, a silane coupling agent accounting for 0.05wt%-1wt% of the resin, anhydrous ethanol accounting for 5wt%-40wt% of the resin, a curing agent accounting for 3wt%-10wt% of the resin, a thickening agent accounting for 1wt%-5wt% of the resin and a wetting agent accounting for 0.1wt%-1wt% of the resin. The highly moisture-penetrable antibacterial anti-ultraviolet waterborne polyurethane material provided by the invention is finished into a textile, and an obtained coated textile is good in waterproof moisture-penetrability and has antibacterial, anti-ultraviolet and other functions at the same time.

The invention provides a TPU (thermoplastic polyurethane) hot melt adhesive membrane. The TPU hot melt adhesive membrane is mainly prepared from the following raw materials in parts by weight: 100 parts of TPU, 30-50 parts of thermoplastic polyester of which the melting point is 90-105 DEG C, 10-30 parts of a tackifier, 5-25 parts of a filling material and 5-30 parts of a functional auxiliary agent. The hot melt adhesive membrane prepared by using the method provided by the invention is of a thermoplastic adhesive, is uniform in thickness and simple in bonding process, is suitable for bonding by adopting an automatic production line, is high in production efficiency and large in peeling strength after bonding, can resist water, heat and salt fog aging in an outdoor harsh environment, is durable in bonding, and can be used for significantly improving the bonding strength of the hot melt adhesive membrane adhered to fabrics.