36results about How to "Air permeability" patented technology

A gypsum board comprises a set gypsum layer having a first face and a second face. An uncoated fibrous mat is affixed to at least one of the faces. The mat comprises a non-woven web bonded together with a resinous binder. The web comprises glass fiber consisting essentially of a major portion composed of chopped continuous glass fibers having an average fiber diameter ranging from about 8 to 25 μm and optionally a minor portion consisting essentially of at least one of small diameter glass fibers having a fiber diameter of at most about 13 μm and microfibers having an average fiber diameter ranging from about 0.05 to about 6.5 μm. The board is exceedingly durable and has a high resistance to water absorption, rendering it particularly useful for exterior insulation systems.

A composite sheet comprises a nonwoven fabric and a rubber elastic material bonded onto the nonwoven fabric. The nonwoven fabric has nonelastic fibers aligned in one direction and has elongation of 100% or higher in a direction perpendicular to the aligned direction of the nonelastic fibers. The rubber elastic material is bonded to the nonwoven fabric in a pattern having orientation perpendicular to the aligned direction of the nonelastic fibers.

A woven or knit fabric containing crimped composite fibers having its air permeability enhanced by water wetting and being useful in clothes such as outerwear, which woven or knit fabric contains 10 to 100 mass % of composite fibers of side-by-side type or eccentric core sheath type composed of polyester resin component and polyamide resin component whose thermal shrinkages are different from each other, the composite fibers having crimps developed by heat treatment. The composite fibers exhibit humid crimp factor HCF (%), as measured through a procedure comprising immersing the same in water of 30° C. for 2 hr, pulling them up, interposing them between a pair of filter papers at 30° C. in a humidity of 90% RH within 60 sec of the pulling up and applying a pressure of 0.69 mN / cm2 for 5 sec, of ≧10% lower than the dry crimp factor DCF (%) after dying by allowing them to stand still at 20° C. in a humidity of 65% RH for 24 hr, so that the woven or knit fabric exerts of the effect of air permeability enhancement by water wetting.

An opening type bone conduction earphone which eliminates headband and has a compact and simple structure comprising a magnetic body, which has an aeration hole, which is able to communicate with the outside world when wearing, at the center part of the axial direction, at least one or more dampers provided at the outer circumference of the magnetic body, and a coil bobbin, which is provided at the outer circumference of the magnetic body, accommodates the damper within a trunk part, and in which a coil is wound at the outer circumference of the trunk part, is provided.

A gypsum board comprises a set gypsum layer having a first face and a second face. An uncoated fibrous mat is affixed to at least one of the faces. The mat comprises a non-woven web bonded together with a resinous binder. The web comprises glass fiber consisting essentially of a major portion composed of chopped continuous glass fibers having an average fiber diameter ranging from about 8 to 25 μm and optionally a minor portion consisting essentially of at least one of small diameter glass fibers having a fiber diameter of at most about 13 μm and microfibers having an average fiber diameter ranging from about 0.05 to about 6.5 μm. The board is exceedingly durable and has a high resistance to water absorption, rendering it particularly useful for exterior insulation systems.

This invention makes public a kind of moisture absorbent quick dry face fabric produced by weaving together warp and weft yarns. The warp yarn uses medium organzine polyester yarn as raw material. The weft yarn consists of A weft and B weft. A weft uses low organzine moisture absorbent desweating filament while B weft uses low organzine composite thread composed of polyester low elastic thread and spandex elastic thread. This invention also makes public the processing technique of said moisture absorbent quick dry face fabric. Said invention features soft tactility, changeable crease, distinctive lines, good conductivity, flexibility, crease resistance, air permeability, moisture absorption and sweat removal.

There is provided a soundproof structure that can selectively block sound having a specific frequency emitted from equipment, automobiles, and general households and can change the cutoff frequency of the sound in accordance with a change in the frequency of sound to be blocked. The above problem is solved by providing a laminated film, in which two or more films each including one or more holes drilled therein are laminated, and two rigid frames, which fix the laminated film so as to be interposed from both sides of the laminated film, and making at least parts of the one or more holes in the respective films of the laminated film overlap each other.

There is provided a laminated soundproof structure formed by laminating a single layer soundproof structure having one or more soundproof cells which are arranged in a two-dimensional plane and each of which includes a frame, a film, and an opening portion including a hole. The single layer soundproof structure has a shielding peak frequency, which is determined by the opening portion of each of the soundproof cells and at which a transmission loss is maximized, on a lower frequency side than a first natural vibration frequency of the film of each of the soundproof cells. The soundproof cells of the single layer soundproof structures are laminated with a distance therebetween, and at least some of the laminated soundproof cells have the same conditions of the frame, the film, and the opening portion.

This invention makes public a kind of changeable imitation fur and linen face fabric weaved together from warp and weft yarns. The warp yarn uses mixed spun yarn with bamboo fiber and fine polyester as raw materials. The weft yarn uses mixed spun multiple color changeable yarn with allotropic and anisotropic polyester and adhesives as raw materials. The processing technique of this changeable imitation fur and linen is also made public. This invention features soft tactility, abrasion resistance, good drapability, air permeability, flexibility, anti-static and anti-bacterial ability.

A preform for a composite material which has high strength and excellent air permeability and hence is applicable to a high-speed die casting method and which is capable of forming a metal composite material having excellent mechanical properties by a high-speed die casting method. Also provided is a process for producing such a preform. Ceramic fibers or / and ceramic particles are mixed with a silica sol and calcium carbonate and sintered at a predetermined temperature to form a calcium / silicon sinter obtained from the silica sol and calcium carbonate. The calcium / silicon sinter coats the ceramic fibers or / and ceramic particles so that a preform having the fibers or / and the particles bound to each other by the calcium / silicon sinter is obtained. The preform for a composite material has high strength and excellent air permeability and is applicable to the high-speed die casting method capable of attaining high productivity.

A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilaments. When the braid is supported on a plasticized PVA cable having a scalloped periphery, the braid can be infiltrated with membrane polymer which, when coagulated, embeds the braid positioning it around the lumen.The embedded spiral weave, free of any circumferentially constricting monofilament, allows the membrane to be biaxially distensible. The membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.

A laundry machine (1) including a cabinet (10) having an opening (10a) for loading and / or unloading laundry, a door (300) selectively opening and / or closing the opening of the cabinet (10), and a door positioning unit (A) for positioning the door (300) away from the cabinet (10).

A pet anti-haze mask is characterized in that a cone-shaped mask body and connecting belts placed on the two sides of the cone-shaped mask body are included, the connecting belts are provided with neck rings, the edge of the cone-shaped mask body is arranged to be in an oval shape, an elastic belt is arranged at the edge of the oval-shaped edge, the cone-shaped mask body is provided with an interlayer, a medium layer is fixed in the interlayer of the cone-shaped mask body, at least one medium layer is arranged and is used for sterilization, a filtering layer is arranged in the interlayer of the cone-shaped mask body, and at least one filtering layer is arranged and is used for filtering away particulate matter. According to the pet anti-haze mask of the structure, the particulate matter entering the mask can be filtered away, the influence on a pet body from haze is lowered, the quality of air passing through the mask is improved, barking, biting and disorderly eating of a pet can be avoided, the health and the safety of a pet dog are guaranteed, and meanwhile the quietness and the safety of a dog-keeping environment are guaranteed.

The invention discloses a pressure-sensitive polymer composite diaphragm as well as a preparation method and application thereof. A pressure-sensitive polymer layer is formed on the surface of a base material of the pressure-sensitive polymer composite diaphragm by coating, spraying or electrospinning a solution of a pressure-sensitive polymer material; the thickness of the pressure-sensitive polymer layer is 0.5 nm to 1 [mu] m; the pressure-sensitive polymer material comprises an elastomer type pressure-sensitive polymer and a resin type pressure-sensitive polymer; the elastomer pressure-sensitive polymer material comprises natural rubber and synthetic rubber; and the resin type pressure-sensitive polymer material comprises polyurethane, polyhalogenated olefin and derivatives thereof, organic silicon resin, fluororesin and polyacrylate. The problem that battery circulation is affected by residual gas due to poor adhesion between the diaphragm of the battery and the positive and negative electrodes is solved, so that the battery circulation performance is improved, and the battery circulation life is prolonged. The pressure-sensitive polymer of the diaphragm provided by the invention is suitable for compounding an existing diaphragm, and is very suitable for application scenarios requiring high safety characteristic and high energy storage performance.

The invention discloses a ceramic diaphragm with a multilayer composite structure and a battery using the ceramic diaphragm. The ceramic diaphragm with the multi-layer composite structure comprises an organic microporous base material, a ceramic coating layer, a three-dimensional high-temperature-resistant layer and a polymer layer; the ceramic coating layer is attached to one surface or two surfaces of the organic microporous base material, the thickness of the ceramic coating layer is 0.1-50 microns, the ceramic coating layer comprises inorganic powder and a binder, and the particle size of the inorganic powder is 5nm-50 microns; holes are distributed in the organic microporous base material; the three-dimensional high-temperature-resistant layer continuously coats the surface of the ceramic coating layer and the inner walls of the holes and comprises a high-temperature-resistant polymer and a curing cross-linking agent, and the high-temperature-resistant polymer comprises phenolic resin, urea resin, polyimide or epoxy resin; the thickness of the polymer layer is 5nm-10mu m, and the polymer layer coats on the surface of the three-dimensional high-temperature-resistant layer. The ceramic diaphragm has good adhesion with positive and negative electrodes, and the battery with the ceramic diaphragm has the advantages of high safety, long service life and the like.

A fixture is provided for attachment to a device to be inserted into a nasal cavity. Further, the fixture is a nasal cavity insertion device fixture formed of a wire rod. The fixture includes a first wire rod part, a second wire rod part, and a third wire rod part. The second wire rod part is connected to the first wire rod part and formed by folding back the wire rod so as to be opposed to the first wire rod part. The third wire rod part is connected to the second wire rod part and formed by bending the wire rod so as to be disposed oppositely to a side of the second wire rod part facing the first wire rod part.

A reassemblable crib includes an assembly type baby fence, a bed board, casters, and foot members. The bed board is installed in a predetermined manner in the baby fence. The casters are mounted to a bottom of the baby fence. The foot members are removably mounted to the bottom of the baby fence. The casters are removably mounted to bottoms of the foot members or the bottom of the baby fence.

A method for making an air permeable waterproof textile with an uneven pattern is disclosed. The density of the arrangement of the threading holes is high or low by controlling the transportation speed of the fabric foundation. The density of the threading holes is high while the transportation speed is high, and the density of the threading holes is low while the transportation speed is low. A vent-typed backing fabric is formed with a plurality of tiny through holes distributed densely and without removing chips. Partial or total burr portions are rolled over by the upper roller and the lower roller with the predetermined pattern so as to shield corresponding threading holes with different extent. The threading holes without shielding have total air permeability. The partially shielded threading holes have partial air permeability with different percentages. The areas of the textile without the threading holes have water proof characteristics.

A laundry machine (1) including a cabinet (10) having an opening (10a) for loading and / or unloading laundry, a door (300) selectively opening and / or closing the opening of the cabinet (10), and a door positioning unit (A) for positioning the door (300) away from the cabinet (10).

There is provided a laminated soundproof structure formed by laminating a single layer soundproof structure having one or more soundproof cells which are arranged in a two-dimensional plane and each of which includes a frame, a film, and an opening portion including a hole. The single layer soundproof structure has a shielding peak frequency, which is determined by the opening portion of each of the soundproof cells and at which a transmission loss is maximized, on a lower frequency side than a first natural vibration frequency of the film of each of the soundproof cells. The soundproof cells of the single layer soundproof structures are laminated with a distance therebetween, and at least some of the laminated soundproof cells have the same conditions of the frame, the film, and the opening portion.

The invention discloses a textile air permeability tester, which comprises a mounting base, a processing table is fixedly connected to the middle position of the top of the mounting base, a ventilation slot is opened in the middle position of the processing table, and the upper surface of the processing table is A sealing groove is provided on the outer edge of the vent hole, and the top of the installation base is fixedly connected to the limit housing relative to the upper position of the processing table. The top of the limit housing is fixedly equipped with a hydraulic cylinder. The bottom extends to the inner cavity of the limit housing, and a sealing cover is fixedly installed on the bottom. When the spur rack moves upward, it drives the first gear to deflect counterclockwise, and then drives the pointer to deflect on the outer wall of the dial. Since the sealing cover and the limit housing are both transparent structural materials, by directly observing the deflection angle of the pointer on the outer wall of the dial The air pressure value entering the inner cavity of the sealed cover can be directly read, and then the air permeability of the fabric can be obtained indirectly.

Provided is a clothing fabric including through holes that pass through the fabric in a thickness direction, wherein the through holes are arranged along one direction of the fabric. A water-repellent or hydrophobic region is arranged at least at part of the fabric in contact with the through holes, and a hydrophilic region is are arranged at the other portions. A portion of the water-repellent or hydrophobic region may form groove portions. The clothes of the present invention include the above-described clothing fabric, wherein the through holes that pass through a portion of the fabric in a thickness direction are arranged along a direction of a wearer' height. Accordingly, it is possible to provide a clothing fabric and clothes using the same that can, while being water-absorbing, suppress formation of a film of a liquid even when the fabric is wet, ensure air permeability of the fabric, and always allow sweat on the skin to be evaporated on the body surface, thereby increasing the effective sweat amount, preventing exercise performance from being lowered, and allowing a person to wear the clothes with comfort even when sweating.

There is provided a soundproof structure that can selectively block sound having a specific frequency emitted from equipment, automobiles, and general households and can change the cutoff frequency of the sound in accordance with a change in the frequency of sound to be blocked. The above problem is solved by providing a laminated film, in which two or more films each including one or more holes drilled therein are laminated, and two rigid frames, which fix the laminated film so as to be interposed from both sides of the laminated film, and making at least parts of the one or more holes in the respective films of the laminated film overlap each other.

Provided is a non-aqueous electrolyte secondary battery which has excellent high-temperature cycle characteristics, while maintaining the shutdown response speed of the separator and the overcharge characteristics after many repeated cycles at high temperatures. The battery uses a non-aqueous electrolyte containing a carboxylic acid ester and a nitrile compound, and a separator having a porosity of 28 to 54% and an air permeability of 86 to 450 secs / dl.

The invention relates to thermal underwear fabric. The thermal underwear fabric comprises raw materials in percentage by mass as follows: 5%-15% of bamboo fibers, 5%-8% of mulberry silk, 15%-20% of wool fibers, 50%-70% of cotton fibers and 3%-7% of viscose fibers. According to the scheme, the fabric has the advantages of good heat retaining property, soft handfeel and excellent breathability and wet permeability.

An absorber, a liquid impervious sheet covering a back surface side of the absorber and having air permeability, and a cover nonwoven fabric covering a back surface side of the liquid impervious sheet are provided. The cover nonwoven fabric has a large number of holes penetrating the front surface and back surface at intervals in a region overlapping with the liquid impervious sheet. Edge portions of the holes bend-up toward a front surface side. In a region having the holes in the cover nonwoven fabric, rows of the holes, which are aligned in the front-back direction at intervals in the front-back direction narrower than the dimension in the front-back direction of each of the holes, are repeatedly formed at predetermined intervals in the width direction, and the interval of the adjacent two holes in the width direction is wider than the dimension in the front back-direction of the hole.

An absorber, a liquid impervious sheet covering a back surface side of the absorber and having air permeability, and a cover nonwoven fabric covering a back surface side of the liquid impervious sheet are provided. The cover nonwoven fabric has a large number of holes penetrating the front surface and back surface at intervals in a region overlapping with the liquid impervious sheet. Edge portions of the holes bend-up toward a front surface side. In a region having the holes in the cover nonwoven fabric, rows of the holes, which are aligned in the front-back direction at intervals in the front-back direction narrower than the dimension in the front-back direction of each of the holes, are repeatedly formed at predetermined intervals in the width direction, and the interval of the adjacent two holes in the width direction is wider than the dimension in the front back-direction of the hole.

A textile air permeability detector is disclosed in the invention, and comprises a mounting base, a processing table is fixedly connected to the middle position of the top of the mounting base, a ventilation groove hole is formed in the middle position of the processing table, and a sealing groove is formed in the position, opposite to the outer edge of the ventilation groove hole, of the upper surface of the processing table; and a limiting shell is fixedly connected to the position, opposite to the upper portion of the machining table, of the top of the mounting base, a hydraulic cylinder is fixedly mounted at the top of the limiting shell, the bottom of the hydraulic cylinder extends to an inner cavity of the limiting shell, and a sealing cover is fixedly mounted at the bottom of the hydraulic cylinder. A first straight rack drives a first gear to deflect anticlockwise when moving upwards, then a pointer is driven to deflect on the outer wall of a dial, and due to the fact that the sealing cover and the limiting shell are both made of a transparent structural material, the value of air pressure entering the inner cavity of the sealing cover can be directly read by directly observing the deflection angle of the pointer on the outer wall of the dial, so the air permeability of the cloth is indirectly obtained.