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.

First, a first porous body is manufactured by stretching, in a uniaxial direction, a sheet made of polytetrafluoroethylene having a standard specific gravity of 2.155 or more, and a second porous body is manufactured by stretching, in biaxial directions, a sheet made of polytetrafluoroethylene. Next, the first porous body is integrated with the second porous body by stretching a laminate of the first porous body and the second porous body in the same direction as the uniaxial direction while heating the laminate at a temperature equal to or higher than a melting point of polytetrafluoroethylene. Thus, a porous polytetrafluoroethylene membrane is produced.

An air-permeable member for portable body warmers includes a nonwoven fabric and a porous film in a layered structure. The nonwoven fabric is a spunbonded nonwoven fabric having an embossment area ratio of 5% to 20% and a METSUKE of 10 to 80 g / m2, the porous film has a thickness of 30 to 200 μm, and the air-permeable member has a compressive strength in machine direction of from 2 to 5.5 N as a maximum compressive load measured through a ring crush method by sampling a 60-mm square test piece; rounding the test piece with a circumference agreeing the transverse direction to give a cylindrical sample; compressing the cylindrical sample in the machine direction using a tensile tester at a temperature of 23° C. and relative humidity of 50% at a compressing speed of 300 mm / min.; and measuring compressive loads at distortions of 0 to 10 mm.

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.

First, a first porous body is manufactured by stretching, in a uniaxial direction, a sheet made of polytetrafluoroethylene having a standard specific gravity of 2.155 or more, and a second porous body is manufactured by stretching, in biaxial directions, a sheet made of polytetrafluoroethylene. Next, the first porous body is integrated with the second porous body by stretching a laminate of the first porous body and the second porous body in the same direction as the uniaxial direction while heating the laminate at a temperature equal to or higher than a melting point of polytetrafluoroethylene. Thus, a porous polytetrafluoroethylene membrane is produced.

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.

The invention discloses a power distribution network voltage control method based on virtual synchronous generator type distributed generation. A VSG-DG control system used by the method acquires inner-loop current and output current of a VSG-DG and voltage at a PCC portion of a VSG-DG integrated net through a voltage / current acquisition module. Through a power calculation module, an active-frequency control module and a reactive-voltage control module, an active frequency modulation function and a wattles voltage regulation function of a synchronous power generator are simulated. Furthermore through a voltage converting module, a voltage compensation control module, a DC voltage control module and a current control module, consistency between an output external characteristic of the VSG-DG and the external characteristic of the synchronous power generator is realized, wherein the reactive-voltage control module adaptively set a PCC voltage compensation reference value according to a PCC voltage fluctuation condition, thereby effectively restraining voltage fluctuation at the PCC portion.

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 member are bonded is provided.

The present invention provides a method for manufacturing a pneumatic tire having an inner liner layer or reinforced sheet layer formed from a laminated sheet (1) by lap-splicing the ends thereof. In the laminated sheet (1), a sheet (2) obtained from a thermoplastic resin or a thermoplastic resin composition of a thermoplastic resin blended with an elastomer is laminated with a rubber (3). With the method, cracking and peeling near the spliced region of the laminated sheet do not occur after beginning travel on the manufactured pneumatic tire. The pneumatic tire manufacturing method according to the present invention, the method having a process of lap-splicing the ends of a laminated sheet (1) in which a sheet (2) obtained from a thermoplastic resin or a thermoplastic resin composition of a thermoplastic resin blended with an elastomer is laminated with a rubber (3) that undergoes vulcanizing adhesion to said thermoplastic resin or thermoplastic resin composition, sharpens the ends of the sheet (2) by heat-treatment at a stage after the cutting of lengths of the sheet (2), which is obtained from the thermoplastic resin or thermoplastic resin composition and is to be subjected to the lap-splicing process, and before the tire vulcanization process.

A stacking apparatus includes a limiting member which moves along a feeding direction and limits a trailing edge of a stacked sheet in the feeding direction, and a partition member which partitions a space at a height which is lower than a predetermined height, into a first space corresponding to a first stacking unit and a second space corresponding to a second stacking unit in a feeding direction. The partition member includes a first opening portion for communicating the first space and the second space with each other, and a second opening portion that allows the limiting member to move.

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.

Provided is a method of producing a battery separator using surface modification treatment, which produces the battery separator by a dry process, satisfies air permeability and puncture strength properties required in the battery separator, and improves the thermal shrinkage and wettability of the battery cell, thereby appropriately responding to the trend for high-capacity and compact batteries. The method comprises: forming an unstretched sheet; subjecting the unstretched sheet to heat forming; cold-stretching the sheet subjected to the heat forming, thereby obtaining a cold-stretched film; hot-stretching the cold-stretched film by first hot stretching and second hot stretching; and heat-setting the film subjected to the second hot stretching, wherein corona discharge treatment is performed between the first hot stretching and the heat setting.

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.

The invention discloses a medicament for treating leukemia comprising components as follows, whose weight unit is mg, VA 5-10mg, VE 100-300mg, VD3 0.5-1mg, VB1 30-60mg, VB2 10-30mg, VB6 30-60mg , nicotinic acid 50-300mg, VC 100-300mg, biotin 0.3-0.9mg, pantothenic acid 25-60mg, folic acid 5-15mg, VB12 0.125-0.5mg, zinc 10-15mg, ferrum 2-4mg, troxerutin 120-360mg, birutan 10-40mg and aspirin 0-600mg. The invention receives the theory of the traditional Chinese and western medicine, which is made from seventeen medicaments selected carefully and composed scientifically. The invention indicates a radical approach for treating cancer completely and provides the medicament with a high healing and small side effects in which treatment of cancer and alimentology are associated perfectly.

A stacking apparatus includes a limiting member which moves along a feeding direction and limits a trailing edge of a stacked sheet in the feeding direction, and a partition member which partitions a space at a height which is lower than a predetermined height, into a first space corresponding to a first stacking unit and a second space corresponding to a second stacking unit in a feeding direction. The partition member includes a first opening portion for communicating the first space and the second space with each other, and a second opening portion that allows the limiting member to move.

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.

Disclosed is a bipolar plate for a fuel cell, including: a non-conductive anode membrane on which a fuel flow channel is formed; a non-conductive cathode membrane on which an air flow channel is formed; a non-conductive separation membrane that is provided between the anode membrane and the cathode membrane to separate them from each other so that the fuel and the air are not mixed; and a metal unit that provides a current moving path allowing charge to be moved from the anode membrane to the cathode membrane via the separation membrane when the anode membrane, the separation membrane and the cathode membrane are stacked sequentially. More specifically, each of the anode membrane, the cathode membrane and the separation membrane is glass, preferably, photosensitive glass.