32results about How to "Satisfy the permeability" patented technology

A water-proof and dust-proof membrane assembly which has a satisfactory water-proof property, dust-proof property, sound transmission capability and air permeability, as well as excellent supporting intensity and pressure resistance is provided. A water-proof and dust-proof membrane assembly having a body and a supporting member, in which the body is an asymmetric porous structure in the form of membrane having a first surface and a second surface, the supporting member is composed of a polymeric material, includes a first contact surface and a second contact surface and the porosity (second porosity) of the supporting member is larger than the first porosity, i.e. 10% to 99.9%, and the first surface of the body and the first contact surface of the supporting body are bonded is provided.

A water-vapor-permeable waterproof composite fabric having high flexibility, water pressure resistance and water laundering resistance is constituted from a substrate fabric and a polyether-ester elastomer (PEE-A) film layer laminated to the substrate fabric through a polyether-ester elastomer (PEE-B) binder layer, each of PEE-A and PEE-B including polyalkylene glycol residues, alkyleneglycol residues and dicarboxylic acid residues, in which composite fabric, (1) the PEE-A contains 5 to 25% by mass of polyethyleneglycol residues, (2) the PEE-A film layer is 5 to 5 μm thick, (3) the PEE-B has a melting temperature of at least 20° C. below that of the PEE-A and (4) the PEE-B binder layer is present in an amount of 2 to 20 g/m².

An object of the present invention is to provide a fabric for an airbag which is of low cost, is excellent in accommodability, and has air permeability satisfying the human body initial constraining performance.

The present invention provides a fabric for an airbag comprising a synthetic fiber woven fabric in which at least one side thereof is coated with a synthetic resin, characterized in that a range of 0.1 to 10 g/m² of a synthetic resin is adhered to the synthetic fiber woven fabric having a cover factor represented by the equation 1 of less than 2000 and FR represented by the equation 2 of 55% or more, and air permeability of the fabric under a pressure difference of 100 kPa after adhesion is 0.01 to 1.00 L/cm²/min.

The invention discloses a light-emitting automobile sign convenient for millimeter-wave radar penetration, which comprises a sign body and a sign base, and is characterized in that the back surface ofthe sign body is connected with the sign base in a sticking or vibration friction welding manner; a UV high-hardness finish paint layer is sprayed on the front surface of the sign body, and a silk-screen printing ink layer, a UV primer layer and a nano inorganic silicon coating are sequentially arranged on the back surface of the sign body; a light-emitting device is further arranged between thesign body and the sign base and comprises a light guide plate and an LED rubber frame, the back face of the light guide plate is installed on the sign base through screws, and the front face of the light guide plate is connected with the LED rubber frame through a buckle. LED lamp beads are arranged on the LED rubber frame, and an LED lamp driving circuit is installed on the sign base and electrically connected with the LED lamp beads through wires. According to the invention, the sign body is irradiated by means of the LED lamp beads installed inside the sign, the lighting effect is good, therequirements of the 77GH millimeter-wave radar for permeability and accuracy are met, and the sign has the metal surface effect.

Provided is a stretchable material that has excellent stretchability, has satisfactory air permeability, is free from causing the protrusion of an elastomer layer and a burr thereof, and is reduced in production cost. Also provided is an article including such stretchable material. A stretchable material of the present invention includes an elastomer layer having an air-permeable portion.

The invention discloses an artificial feeding method for virus vector insect bemisia tabaci. The method comprises the following steps that vegetables with main leaves are adopted as host plants; infectivity clone bacteria liquor is inoculated to the host plant; culture continues to be performed, and plants infected with diseases and non-toxic plants are screened out; B bemisia tabaci and Q bemisia tabaci are inoculated to the plants infected with diseases and the non-toxic platns to obtain the plants infected with diseases of B bemisia tabaci, the plants infected with diseases of Q bemisia tabaci, the non-toxic plants inoculated with the B bemisia tabaci and the non-toxic plants inoculated with the Q bemisia tabaci; independent feeding is performed, bemisia tabaci is bred; after feeding is performed for 6 generations, bemisia tabaci is taken out. According to the artificial feeding method, the insect developing time can be shortened, the egg laying amount is increased, the survival rate and stability are ensured, and the continuous and stable supply of bemisia tabaci is ensured.

The invention provides a porous film having a plurality of connected pores, and a process for its production. The porous film of the invention is a porous film formed from highly heat resistant poly(metaphenylene isophthalamide), and having specific ranges for the open areas and difference between them on both surfaces, as well as specified ranges for the mean pore sizes and porosity on both surfaces. The permeability and impregnation with respect to substances such as air and water, as well as the dynamic strength, are therefore excellent, and the porous film can be used for filters, and for curing resin-impregnated prepregs, multilayer wiring boards, electronic package substrates and the like employing the porous film as a core material.

A separator for a nonaqueous electrolyte secondary battery according to the present disclosure includes cellulose fibers and resin particles having substituents bonded by hydrogen bonds with the cellulose fibers.

A venting valve for a container for liquid has a valve housing having a pressure compensation passage connecting the container interior with the container exterior. A valve member is arranged in the valve housing and controls the pressure compensation passage. An air-permeable filter body is secured within the valve housing and covers the pressure compensation passage, wherein a face of the filter body faces the container interior. A filter element covers the face of the filter body that is facing the container interior. The filter element is a securing element for the filter body. The filter element closes off an opening of the valve housing that opens into the container interior.

A separator according to the present disclosure includes cellulose fibers and fluororesin particles.

Provided is toilet sand for animals which retains satisfactory liquid permeability and can absorb, with the lapse of time, any liquid remaining on the surface and which can be prevented from generating dust when in use, etc. The toilet sand for animals comprises a plurality of granules, each of the granules comprising: a core configured of an inorganic porous material and a binder with which particles of the inorganic porous material are integrally affixed; and a water-blocking coating layer formed on the surface of the core and configured of a water-blocking material which has water-absorbing properties and which, in the state of having absorbed water, has viscosity. Preferably, the water-blocking material is configured of one or more substances selected from the group consisting of ethylene/vinyl acetate copolymers, polyvinyl alcohol, and starch.