Abstract: Disclosed is a fine-fibers-dispersed nonwoven fabric comprising dispersed fine fibers having a fiber diameter of 4 ?m or less and a fiber length of 3 mm or less, wherein an adhesion rate of substances adhered to the nonwoven fabric is 0.5 mass % or less. Further, a process and an apparatus for manufacturing the fine-fibers-dispersed nonwoven fabric, as well as a sheet material comprising the fine-fibers-dispersed nonwoven fabric are also disclosed.

Abstract: Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 m2 or more, a thickness of the nonwoven fabric is 0.1 mm or less, a uniformity index of the nonwoven fabric is 0.15 or less, and the nonwoven fabric contains fine fibers having a fiber diameter of 4 ?m or less.

Abstract: A process for manufacturing an electret article, comprising passing melt-extruded thermoplastic resin fibers through a mist space substantially formed from droplets of a polar liquid, and then collecting the fibers, wherein the thermoplastic resin fibers contain electrical-chargeability enhancing agents, and the average diameter of the droplets is less than 20 ?m, is disclosed. Further, an apparatus for manufacturing an electric article, comprising (1) a means for melt-extruding a thermoplastic resin containing electrical-chargeability enhancing agents to form thermoplastic resin fibers; (2) a means for spraying droplets consisting essentially of a polar liquid to a space downstream of a direction of said thermoplastic resin extruded from said means for melt-extruding a thermoplastic resin, to thereby form a mist space, the average diameter of said droplets being less than 20 ?m; and (3) a means for collecting said thermoplastic resin fibers which have been passed through said mist space, is also disclosed.

Abstract: A process for manufacturing an inorganic material-based article comprising the steps of

Abstract: A process for manufacturing an inorganic material-based article comprising the steps of (1) forming a sol solution mainly composed of an inorganic component, (2) producing inorganic material-based gel fine fibers by extruding the resulting sol solution from a nozzle, and at the same time, applying an electrical field to the extruded sol solution to thin the extruded sol solution, and then, collecting inorganic material-based gel fine fibers on a support, (3) drying the collected inorganic material-based gel fine fibers to produce inorganic material-based article containing inorganic material-based dried gel fine fibers, and then, (4) sintering the inorganic material-based article containing inorganic material-based dried gel fine fibers to produce inorganic material-based article containing inorganic material-based sintered fine fibers.

Abstract: A process for manufacturing an electric double-layer capacitor with an excellent property of preventing a short circuit between the electrodes, a better ionic permeability and a high strength is provided, said process comprising using, as a separator, a fiber sheet containing a fiber having fibrils and a fine polyester fiber having a fineness of not more than 0.45 dtex (decitex) and drying the separator at a specific temperature.

Abstract: A process for manufacturing an inorganic material-based article comprising the steps of

Abstract: A floor mat for an automobile consisting essentially of one or more porous material layers wherein a water-resistant pressure of the whole floor mat is 40 mmH2O or more is disclosed.

Abstract: Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 m2/m2 or more, a thickness of the nonwoven fabric is 0.1 mm or less, a uniformity index of the nonwoven fabric is 0.15 or less, and the nonwoven fabric contains fine fibers having a fiber diameter of 4 &mgr;m or less.

Abstract: A separator for an electric double-layer capacitor with an excellent property of preventing a short circuit between the electrodes, a good ionic permeability and a high strength is provided by a fiber sheet including a fibril-containing fiber and a fine polyester fiber having a fineness of not more than 0.45 dtex (decitex).

Abstract: Disclosed is a fine-fibers-dispersed nonwoven fabric comprising dispersed fine fibers having a fiber diameter of 4 &mgr;m or less and a fiber length of 3 mm or less, wherein an adhesion rate of substances adhered to the nonwoven fabric is 0.5 mass % or less. Further, a process and an apparatus for manufacturing the fine-fibers-dispersed nonwoven fabric, as well as a sheet material comprising the fine-fibers-dispersed nonwoven fabric are also disclosed.

Abstract: An alkaline battery separator comprising a fiber sheet containing, on outer surfaces of fibers forming a surface of the fiber sheet, a substance having a peak of a bond energy at 530.5 to 531.5 eV which is measured by an X-ray photoelectron spectrometer at a photoelectron-taking-off angle of about 30°; a fiber sheet containing a larger amount of carboxyl groups bonded to surfaces of fibers forming an inside of the fiber sheet than an amount of carboxyl groups bonded to outer surfaces of fibers forming a surface of the fiber sheet; or a fiber sheet capable of entrapping ammonia in an amount of 0.4 mmol/g or more in average is disclosed.

Abstract: A separator for an electric double-layer capacitor with an excellent property of preventing a short circuit between the electrodes, a good ionic permeability and a high strength is provided which comprises a fiber sheet comprising a fibril-containing fiber and a fine polyester fiber having a fineness of not more than 0.45 dtex (decitex).

Abstract: A process for manufacturing an electric double-layer capacitor with an excellent property of preventing a short circuit between the electrodes, a better ionic permeability and a high strength is provided, said process comprising using, as a separator, a fiber sheet containing a fiber having fibrils and a fine polyester fiber having a fineness of not more than 0.45 dtex (decitex) and drying the separator at a specific temperature.

Abstract: A method for generating plasma, comprising irradiating an electromagnetic wave to an energy converter capable of converting an irradiated electromagnetic wave to an electric energy and discharging said electric energy, in the presence of a rare gas in a chamber. A method for activating plasma, further comprising applying an electric cr magnetic field to said generated plasma, a process for treating a substrate, using the generated and optionally activated plasma, and apparatuses therefor are also disclosed.

Abstract: A carrier for adhering animal cells during culturing or for immobilization of animal cells is produced by coating a porous substrate with a cell adhesive material in the form of a mixture with chitosan. In a preferred embodiment, the porous substrate is a nonwoven fabric prepared by impregnating a nonwoven fabric web with a binder resin, and the mixture contains silk fibroin, gelatin and chitosan. Coating is carried out by contacting the nonwoven fabric with a solution prepared by adding silk fibroin and gelatin to an acidic aqueous solution of chitosan to coat the nonwoven fabric, drying the coated nonwoven fabric and treating the dried nonwoven fabric with an alkali to render the chitosan insoluble.

Abstract: A battery separator comprising a sheet material containing a polyvinyl alcohol cross-linked by a cross-linking group of the general formula (I): ##STR1## wherein A represents a group of --CH.dbd.CH--R.sub.1 or ##STR2## R.sub.1 represents an optionally substituted quaternary nitrogen-containing aromatic heterocyclic group, R.sub.2 and R.sub.3 independently represent a hydrogen atom or alkoxy group having 1 to 4 carbon atoms, m is o or 1, and n is an integer of 1 to 6, is disclosed.The separator exhibits a good resistance to electrolyte, electrolyte holding rate, and resistant to short-circuits.

Abstract: A surface material for interior materials of cars comprising a needle punched felt of which one side surface is needle punched and is impregnated with a synthetic resin emulsion and a web composed of a hot-melt fiber, which is laminated on the impregnated surface of the needle punched felt, and having a 30% modulus of not more than 9 kg/5 cm.width and the shape stability of at least than 60% after shaping. According to the present invention, a surface material for interior materials of cars showing excellent elongation when deep drawing without abrasion can be realized.

Abstract: A cleaning web for fixing roll of copy machines, the cleaning web consisting of a fibrous base material containing 20 to 85 wt % of aromatic polyamide fibre and 80 to 15 wt % of polyester fibre and having seal portions and non-seal portions with an apparent density of 0.2 to 0.4 g/cm.sup.3 distributed substantially over the entire area thereof, the fibrous base material being impregnated with silicone oil.

Abstract: The disclosed invention relates to a counterflow type heat exchanger composed of plural heat exchange units characterized by unique inlet and outlet headers. Each header has an end face providing an opening to the header interior and a closed end face, both of which extend obliquely from the tube sheet to join at an apex and which are symmetrically arranged with respect to each other. Such a construction enables the flow of fluid passing through each heat exchange unit to be uniform across the width of the heat exchange unit.