Abstract: A soft magnetic material according to an aspect of the present invention includes a powder-particle substance having a particle size frequency distribution having a plurality of peak tops. The powder-particle substance is an aggregate of composite particles containing a plurality of soft magnetic metal particles and includes a medium powder-particle substance in which the composite particles have a particle size of 45 ?m or more and less than 300 ?m, and the medium powder-particle substance has an average circularity of 0.7 or more.

Abstract: A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 ?m to 1 ?m. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.

Abstract: The present invention provides a fiber having a nano-order fiber diameter, which is produced by without a process of dehydration and cyclization by a heat treatment after fiber spinning and has excellent heat resistance and mechanical strength, and a non-woven fabric composed of the fiber, and discloses the polyamide-imide fiber and the non-woven fabric having an average fiber diameter of from 0.001 ?m to 1 ?m and also discloses the process for producing threrof. The present invention also provides a separator for an electronic component which has a high conductivity and a small separator thickness and is improved in safety during reflow soldering or short-circuiting, and discloses the separator composed of a non-woven fabric obtained by an electro-spinning method.

Abstract: A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 ?m to 1 ?m. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.

Abstract: The present invention provides a fiber having a nano-order fiber diameter, which is produced by without a process of dehydration and cyclization by a heat treatment after fiber spinning and has excellent heat resistance and mechanical strength, and a non-woven fabric composed of the fiber, and discloses the polyamide-imide fiber and the non-woven fabric having an average fiber diameter of from 0.001 ?m to 1 ?m and also discloses the process for producing threrof. The present invention also provides a separator for an electronic component which has a high conductivity and a small separator thickness and is improved in safety during reflow soldering or short-circuiting, and discloses the separator composed of a non-woven fabric obtained by an electro-spinning method.

Abstract: The easy-to-tear stretched aliphatic polyester film of the present invention is characterized in that the edge tear strength in the longitudinal direction and the transverse direction is not more than 22 N. The easy-to-tear stretched aliphatic polyester film of the present invention is produced by a method of irradiation of actinic rays on an aliphatic polyester film or a method of film-forming a film obtained by laminating aliphatic polyesters having different melting points in three layers of A/B/A under particular film-forming conditions.

Abstract: An oriented syndiotactic polystyrene-based film composed of an oriented film made of a syndiotactic styrene polymer and an adhesiveness-improving layer formed from a specific water-dispersible resin on at least one surface of the oriented film, which is excellent in the tight adhesion between the oriented film and the adhesiveness-improving layer, the adhesion between the adhesiveness-improving layer and an ink layer or laminate layer applied thereon, economical efficiency, recyclability, and environmental compatibility in production. It is particularly preferable that the film be produced by applying the aqueous dispersion of the water-dispersible resin on unstretched or uniaxially stretched film to form the adhesiveness-improving layer, stretching the obtained laminate uni- or bi-axially at least one time, and then heat-treating the resulting laminate.

Abstract: The present invention is a heat-resistant film comprising at least any one of a polybenzazole, aramid and polyamideimide produced by introducing a thin film made by a roll, slit or press from a polymer solution sandwiched between at least two supports into a coagulating bath and peeling the supports off in the coagulating bath to effect the coagulation, and a composite ion-exchange membrane having a surface layer consisting of an ion-exchange resin excluding a porous film on the both side of a composite layer formed by impregnating said film with the ion-exchange resin. A heat-resistant film having a combination of excellent heat resistance, mechanical strength, smoothness and interlaminar peeling resistance, especially a microporous heat-resistant film, and a composite ion-exchange membrane employing the same which has an excellent ion conductivity are provided.

Abstract: An oriented syndiotactic polystyrene-based film composed of an oriented film made of a syndiotactic styrene polymer and an adhesiveness-improving layer formed from a specific water-dispersible resin on at least one surface of the oriented film, which is excellent in the tight adhesion between the oriented film and the adhesiveness-improving layer, the adhesion between the adhesiveness-improving layer and an ink layer or laminate layer applied thereon, economical efficiency, recyclability, and environmental compatibility in production. It is particularly preferable that the film be produced by applying the aqueous dispersion of the water-dispersible resin on unstretched or uniaxially stretched film to form the adhesiveness-improving layer, stretching the obtained laminate uni- or bi-axially at least one time, and then heat-treating the resulting laminate.

Abstract: A detector (29) detects that a refrigerant gas has leaked from a refrigeration cycle, or detects in advance that a refrigerant is to leak. The alarming device (27) gives users an alarming signal warning against the refrigerant leak. The alarming device (27) is caused to stop giving an alarming signal after users open doors of storage compartments including a refrigerator compartment (4), a vegetable storage compartment (5) and a freezer compartment (6). For example, after all the doors of the storage compartments are opened, giving the alarming signal is stopped. Otherwise, giving the alarming signal is stopped after the door of a storage compartment into which cold air flows by causing a damper (12) to open is opened.

Abstract: The easy-to-tear stretched aliphatic polyester film of the present invention is characterized in that the edge tear strength in the longitudinal direction and the transverse direction is not more than 22 N. The easy-to-tear stretched aliphatic polyester film of the present invention is produced by a method of irradiation of actinic rays on an aliphatic polyester film or a method of film-forming a film obtained by laminating aliphatic polyesters having different melting points in three layers of A/B/A under particular film-forming conditions.

Abstract: The first driving shaft 2 is provided with the electric supply equipment 8 such as the metal brush. The second driving shaft 3 is as well too. Further, a nozzle 10 for supplying the conductive coolant is supplied to the grinding portion between the grinding surface 1a and the surface Wa to be ground is provided. When grinding is carried out, the conductive coolant is supplied from the nozzle 10 and by turning on the electricity to the first driving shaft 2 and the second driving shaft 3, a voltage is applied between the grinding surface 1a and the surface Wa to be ground of the work W. Due to electrolysis of that instance, the conductive material of the surface of the grindstone is dissolved in the conductive coolant, simultaneously the clogging of the grinding surface 1a is solved. Accordingly, a super ball finishing using a grindstone of the quite high grain size becomes possible.

Abstract: A film of the present invention includes, as its main component, an aliphatic polyester whose primary repeating unit is represented by a general formula —O—CHR—CO— (where R denotes H or an alkyl group having a carbon number of 1-3). A three-dimensional surface roughness SRa of at least one side of the film is about 0.01 &mgr;m to about 0.1 &mgr;m. PCC value denoting the number of projections on the film per a unit of area along a mean roughness plane and the three-dimensional surface roughness SRa satisfy the following relationship: PCC value≦7000-45000×SRa.

Abstract: A film of the present invention includes, as its main component, an aliphatic polyester whose primary repeating unit is represented by a general formula —O—CHR—CO— (where R denotes H or an alkyl group having a carbon number of 1-3). A three-dimensional surface roughness SRa of at least one side of the film is about 0.01 &mgr;m to about 0.1 &mgr;m. PCC value denoting the number of projections on the film per a unit of area along a mean roughness plane and the three-dimensional surface roughness SRa satisfy the following relationship: PCC value≦7000-45000×SRa.

Abstract: A film of the present invention includes, as its main component, an aliphatic polyester whose primary repeating unit is represented by a general formula —O—CHR—CO— (where R denotes H or an alkyl group having a carbon number of 1-3). A three-dimensional surface roughness SRa of at least one side of the film is about 0.01 &mgr;m to about 0.1 &mgr;m. PCC value denoting the number of projections on the film per a unit of area along a mean roughness plane and the three-dimensional surface roughness SRa satisfy the following relationship: PCC value≦7000-45000×SRa.

Abstract: It is an object of the present invention to overcome the problem of fibrillation which is a drawback found in solvent-spun regenerated cellulosic fibers and to thereby provide high-quality regenerated cellulosic fibers. The regenerated cellulosic fibers are produced by the use of a spinning dope of cellulose dissolved in a solvent containing N-methylmorpholine N-oxide under the conditions that the average degree of polymerization of cellulose contained in the spinning dope is held to 400 or lower and 5% to 30% by weight of the cellulose is adjusted to a degree of polymerization of 500 or higher. Thus a pseudo-liquid-crystalline phenomenon can be allowed to occur in the stretched filaments during spinning, so that the resulting regenerated cellulosic fibers have improved resistance to fibrillation as well as improved dyeability and feeling.

Abstract: The first driving shaft 2 is provided with the electric supply equipment 8 such as the metal brush. The second driving shaft 3 is as well too. Further, a nozzle 10 for supplying the conductive coolant is supplied to the grinding portion between the grinding surface 1a and the surface Wa to be ground is provided. When grinding is carried out, the conductive coolant is supplied from the nozzle 10 and by turning on the electricity to the first driving shaft 2 and the second driving shaft 3, a voltage is applied between the grinding surface 1a and the surface Wa to be ground of the work W. Due to electrolysis of that instance, the conductive material of the surface of the grindstone is dissolved in the conductive coolant, simultaneously the clogging of the grinding surface 1a is solved. Accordingly, a super ball finishing using a grindstone of the quite high grain size becomes possible.

Abstract: A method and apparatus for measuring sleep quality that utilizes sensors incorporated in a sheet which is laid on top of a conventional mattress on which the subject sleeps. The sensors can collect information such as the subject's position, temperature, sound/vibration/movement, and optionally other physical properties.

Abstract: The first driving shaft 2 is provided with the electric supply equipment 8 such as the metal brush. The second driving shaft 3 is as well too. Further, a nozzle 10 for supplying the conductive coolant is supplied to the grinding portion between the grinding surface 1a and the surface Wa to be ground is provided. When grinding is carried out, the conductive coolant is supplied from the nozzle 10 and by turning on the electricity to the first driving shaft 2 and the second driving shaft 3, a voltage is applied between the grinding surface 1a and the surface Wa to be ground of the work W. Due to electrolysis of that instance, the conductive material of the surface of the grindstone is dissolved in the conductive coolant, simultaneously the clogging of the grinding surface 1a is solved. Accordingly, a super ball finishing using a grindstone of the quite high grain size becomes possible.

Abstract: An aliphatic polyester film comprising, as a main component, a polylactic acid having a reduced viscosity (&eegr;sp/C) of not less than 0.50 dl/g and not more than 2.50 dl/g, wherein the film has a thermal shrinkage in the longitudinal direction at 120° C. of not more than 5.0% is provided. The aliphatic polyester film of the present invention is provided which is useful as a packaging film and an adhesive tape, superior in hand tearability, twist retention, processability and film forming property, and which is biodegradable when placed in a natural environment.