46results about How to "Enhanced water vapor transmission rate" patented technology

Protective, multi-layered, breathable fabric constructs having dynamic or static antimicrobial compositions incorporated into adhesive components. The flexible constructs employ a fabric layer and a breathable coating layer applied to the fabric. Under certain preferred embodiments, the fabric constructs also employ an energy dissipating fiber material disposed opposite the coating layer. Also, the present invention teaches a method of protecting a valuable or sensitive object from damage caused by corrosion, weather, biomass, or other environmental related conditions using the fabric material. The fabric constructs may be post-formed using heat or other methods to create shaped-to-form covers.

The invention discloses a high-strength composite material for a breathable film and a preparation method thereof. The high-strength composite material is prepared by performing mixing and extrusion granulating on the following components in parts by weight: 21-44 parts of bimodal polyethylene, 8-15 parts of metallocene polyethylene, 3-8 parts of high-density polyethylene, 45-55 parts of inorganicfiller, 0.1-1 part of antioxidant, 0.5-1 part of lubricant and 0.2-1 parts of coupling agent. According to the composite material for the breathable film, bimodal polyethylene is selected as a base material, the puncture resistance of a product is adjusted by using metallocene polyethylene, so that the prepared composite material not only can fully exert the characteristics of high strength and the like of the high molecular weight in bimodal polyethylene, but also has good puncture resistance of metallocene polyethylene, and the prepared film has waterproof and breathable functions and veryhigh water vapor permeability which exceeds 2000 g / m<2> / 24h; and the composite material is suitable for being used as a back material of paper diapers, sanitary napkins and the like, so that the use comfort can be improved, and the air permeability can be ensured.

Protective, multi-layered, breathable fabric constructs having dynamic or static antimicrobial compositions incorporated into adhesive components. The flexible constructs employ a fabric layer and a breathable coating layer applied to the fabric. Under certain preferred embodiments, the fabric constructs also employ an energy dissipating fiber material disposed opposite the coating layer. Also, the present invention teaches a method of protecting a valuable or sensitive object from damage caused by corrosion, weather, biomass, or other environmental related conditions using the fabric material. The fabric constructs may be post-formed using heat or other methods to create shaped-to-form covers.

This invention relates to protective, multi-layered, breathable fabric constructs. The constructs which are flexible employ a fabric layer and a breathable coating layer applied to the fabric. Under certain preferred embodiments, the fabric constructs also employ an energy dissipating fiber material disposed opposite the coating layer. Also, the present invention teaches a method of protecting a valuable or sensitive object from damage caused by corrosion, weather, bio mass, or other environmental related conditions using the fabric material. The fabric constructs may be post-formed using heat or other methods to create shaped-to-form covers.

The present invention provides an adhesive tape and a method for producing same, the adhesive tape comprising: a substrate; and an adhesive sheet provided on one surface of the substrate and comprising hardened material of water-based acrylic adhesive composition, wherein the adhesive sheet has a porous structure comprising holes and water vapor transmission rate of 3,000-5,000 g / m<2>*day under the condition of 40 DEG C temperature and 20% relative humidity.

The invention belongs to the field of articles for daily life and in particular relates to a hand sanitizer. The hand sanitizer is prepared by taking sodium alginate as a film forming base material and chitosan as a raw material of a blended film; a molecular chain of the chitosan has primary amino and a molecular chain of the sodium alginate has carboxyl; under the action of an electrostatic force, a polyelectrolyte film can be formed through positive and negative charge attraction, so that one layer of protection film is formed on skin; by a low molecular weight plasticizer glycerol, a plasticizer molecule and a polymer have a mutual effect, so that a mutual action force between macromolecules is weakened and the hydrogen-bond interaction in the molecules is weakened; the ratio of a crystallization region to an amorphous region of the film is reduced and the water seepage steam penetration rate of the film is improved, so that the loss of moisture in the skin is prevented or alleviated and the wetting property of the skin is kept; rosemary essential oil is added and essential oil molecules exist in the film with a plurality of micro-pores; after active substances with a bacterium-inhibition effect in the essential oil molecules enter the film, the active substances are dispersed to the surface of the film gradually through the micro-pores, so that the antibacterial performance of the surface of the skin is improved.

Substrates, coated with a block copolymer comprising at least four blocks being at least two hard blocks, one soft block and one hydrophilic block, wherein a the soft block is sandwiched between the hard blocks.

The invention discloses a method for preparing a breathable self-adhesion elastic bandage. The method includes the following steps that acetone and rosin are mixed by weight, ultrasound treatment is conducted for 5-15 minutes at the temperature of 60-90 DEG C, and accordingly a first mixture is obtained; the first mixture, polyving akohol, polyurethane, potassium sorbate, isopropyl palmitate and fatty alcohol-polyoxyethylene ether are placed in a mixing agitator to be stirred, and after the PH value is adjusted to be neutral, a second mixture is obtained; the second mixture is arranged in a drying oven for 10-30 minutes, then the second mixture is smeared on a non-woven fabric base material through a double-roller coating method under the protection of nitrogen, and the elastic bandage is obtained after the processes of coiling, shearing, nitrogen sealing and sealing. The bandage obtained through the method has the advantages of being high in compressive strength, long in protection time, high in water vapor permeability and capable of being widely applied to clinic treatment.

The invention provides a low-permeability TPU film for an automobile headrest and a preparation method of the low-permeability TPU film. The low-permeability TPU film for the automobile headrest comprises a TPU film layer and a water vapor barrier layer which are laminated, wherein the water vapor barrier layer comprises layered silicate minerals and synthetic resin; and the TPU film layer is prepared from the following components in parts by weight: 10-20 parts of polyether polyol, 60-80 parts of aliphatic diisocyanate, 10-20 parts of an acrylic acid derivative, 1-4 parts of a catalyst and 1-5 parts of a chain extender. On the premise that the TPU film for the automobile headrest has good mechanical performance, the TPU film for the automobile headrest further has low water vapor permeability and oxygen permeability; and the preparation method of the TPU film for the automobile headrest is simple, raw materials are easy to obtain, the price is low, and the implementation is convenient.

The present invention provides an adhesive tape comprising: a substrate; and an adhesive sheet provided on one surface of the substrate and comprising a water-based acrylic adhesive composition and a method for producing the same. wherein the adhesive sheet has a porous structure including pores, and wherein the adhesive tape has a water vapor transmission rate of 3,000 g / m under conditions of a temperature of 40°C and a relative humidity of 20% 2 ・Day or more and 5,000g / m 2 · days or less.

The invention discloses a preparation method of a liquid band-aid, comprising: dispersing a block polymer composed of a non-polar segment and a polar segment into a mixed solvent composed of a non-polar solvent and a polar solvent to prepare a polymerized Thickener solution; disperse the thickener into a mixed solvent composed of non-polar solvent and polar solvent to make a thickener solution; add the thickener solution into the polymer solution, then add the bacteriostat, and mix evenly Afterwards, it is made into a liquid band-aid. The preparation method of the present invention is simple in process, and compared with traditional band-aids, the prepared liquid band-aids have the advantages of simple and convenient use, and are not limited by the size and position of the wound. High water vapor transmission rate and good water resistance provide a moist and sterile environment for the wound, better promote wound healing and shorten the healing time.

The invention discloses a waterproof and breathable casting film composite material and a preparation method thereof, which is prepared from the following components in parts by weight: 42-47 parts of metallocene polyethylene, 3-8 parts of high-pressure polyethylene, and 45-55 parts of inorganic filler 0.1-1 part of antioxidant, 0.5-1 part of lubricant and 0.2-1 part of coupling agent are prepared by mixing, extruding and granulating. The preparation process of the present invention is simple and the cost is low. The prepared waterproof and breathable cast film composite material is combined with the cast film processing technology, and it is easier to produce a cast film with waterproof and breathable functions, and the produced cast film is light and thin, Soft touch, high tensile strength, good puncture resistance; and the casting film made of this composite material has a high water vapor transmission rate, exceeding 2000g / ㎡ / 24h; it is suitable as the back material of diapers, sanitary napkins, etc. It can not only improve the user's comfort but also ensure breathability.

The invention discloses a preparation method of cellulose viscose and its application in cellulose casing, belonging to the technical field of viscose fibers. The preparation method of cellulose viscose includes preparing a viscose solution, modifying the viscose solution , spinning and post-processing; the application of the cellulose viscose in the cellulose casing includes weaving, shaping, primary drying, washing and setting, and secondary drying; the present invention can improve the toughness and antistatic properties of the cellulose casing. While improving the spinnability, the water vapor transmission rate, wet modulus, dimensional stability, elasticity, abrasion resistance and acid and alkali resistance of cellulose casing are improved.

The invention provides an adhesive tape base material, an adhesive tape having the same and a preparation method. The tape base material includes a continuous phase and a dispersed phase dispersed in the continuous phase, the material of the continuous phase is L-polylactic acid, and the material of the dispersed phase is a toughening filler and a dispersant, wherein by weight, the L-polylactic acid is 55 to 95 parts, 0.25 to 2.5 parts of toughening filler, and 0.25 to 2.5 parts of dispersant. Since raw materials such as L-polylactic acid are biodegradable, the environmental pollution caused by the tape with this substrate is reduced, and by limiting the ratio of the above components, the tape substrate can have a moderate oxygen transmission rate As well as high water vapor transmission rate, it can be used to realize the encapsulation of agricultural products.

The invention belongs to the technical field of composite materials, and in particular relates to a degradable plastic wrap and its preparation method and application. The invention provides a degradable plastic wrap, which comprises a polylactic acid base film, polyethylene glycol and chitosan-caffeic acid graft copolymer contained in the polylactic acid base film. In the present invention, the chitosan-caffeic acid graft copolymer can destroy the dense structure of polylactic acid, thereby improving the air permeability of the degradable plastic wrap, and then improving the moisture resistance of the degradable plastic wrap, and inhibiting the growth of edible fungi in the degradable fresh-keeping film. The quality deterioration under the packaging of the film prolongs the shelf life of the edible fungi. In the present invention, the polylactic acid as a base material has good biocompatibility and degradability, and the present invention uses polylactic acid as a base material to make the degradable fresh-keeping film degradable.