36results about How to "Air permeability" patented technology

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 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.

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.

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 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).

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.

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.

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.

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.