Abstract: A method enabling a used superabsorbent polymer recovered from used absorbent, etc., to be readily and inexpensively recovered without using acids or alkalies. The used superabsorbent polymer is treated with an aqueous solution of a multivalent metal salt such as calcium chloride, etc., the superabsorbent polymer treated with the aqueous solution of a multivalent metal salt is treated with an aqueous solution of an alkaline metal salt such as sodium chloride, etc., the superabsorbent polymer treated with the aqueous solution of an alkaline metal salt is washed with water, and the superabsorbent polymer washed with water is then dried.

Abstract: A nonwoven fabric comprising heat-expanding particles, having bulk and high strength, and a method for producing the nonwoven fabric. The method of producing a nonwoven fabric according to the invention comprises a step of supplying a first sheet-forming material comprising fiber and water onto a belt, to form a first sheet layer on the belt, a step of spraying a high-pressure water jet onto the first sheet layer to form grooves extending in the machine direction on the surface, a step of forming a second sheet-forming material comprising fibers, heat-expanding particles and water into a sheet to form a second sheet layer, a step of layering the first sheet layer and the second sheet layer to form a third sheet layer, a step of drying the third sheet layer, and a step of spraying high-pressure steam onto the third sheet layer to expand the heat-expanding particles.

Abstract: There is provided a method for producing a nonwoven fabric that can produce a nonwoven fabric having high strength, high bulk and softness. The method for producing a nonwoven fabric according to the invention comprises a step of supplying a water-containing paper-making material onto a support to form a paper layer 21 on the support, a step of injecting a high-pressure water jet stream onto the paper layer 21 from a high-pressure water jet stream nozzle 12 provided above the support, a step of injecting high-pressure steam onto the paper layer 21 on which the high-pressure water jet stream has been injected, from a steam nozzle 14 provided above the support, and a step of drying the paper layer on which the high-pressure steam has been injected.

Abstract: Provided are an absorbent and an absorptive article containing the absorbent which has excellent water absorbability and leakage prevention ability, and has an intent to achieve reductions in the weight and thickness of an absorptive article. The absorbent comprises a polysaccharide that causes a gelation reaction in the presence of a polyvalent metal ion and a source of the polyvalent ion, in which the polyvalent ion is supplied simultaneously with or after dissolution and swelling of the polysaccharide. The absorptive article containing the absorbent can achieve excellent water absorbability and leakage prevention ability and thus reductions in the weight and thickness as the absorptive article.

Abstract: In order to provide an absorbent, which contains no wood pulp and wood pulp and has improved liquid absorbability and improved liquid retention ability, and an absorptive article provided with the absorbent, no wood pulp having a settling time in water of 2-5 sec is used in an absorbent that contains no wood pulp and wood pulp.

Abstract: A wet wipe includes a nonwoven fabric impregnated with a liquid. A surface layer in a first surface of the nonwoven fabric has an apparent density of 0.030-0.10 g/cm3 in a dry state. A surface layer in a second surface of the nonwoven fabric has an apparent density of 0.12-0.20 g/cm3 in a dry state. Fibers constituting the nonwoven fabric are raised on at least the first surface.

Abstract: An absorber and an absorbent article which have excellent leak proof property during use and water disintegratability after disposal. The water disintegratable absorber includes a water disintegratable absorber layer and a water insoluble resin layer. The amount of water absorption of the water disintegratable absorber layer is 300 g/m2 or more and tear strength in the plan view direction of the water insoluble resin layer is 0.15 N/40 mm or less in a first direction as well as a second direction that is orthogonal to the first direction.

Abstract: An absorber containing non-wood pulp with the settling velocity in water between 2 and 5 seconds, the mean fiber size of 8 to 25 ?m, the apparent bulk density of 0.04 to 0.07 g/cm3, and the absorption for 0.9% physiological saline of at least 20-fold with respect to the pulp mass. The absorber has a thickness change of at least 600%, as the thickness after having absorbed 0.9% physiological saline with respect to the thickness before absorbing 0.9% physiological saline. When addition of 80 mL of 0.9% physiological saline to the absorbent article over a period of 10 seconds is performed three times every 10 minutes and the absorption rate of the absorbent article for each of the three times is evaluated as the time from addition of the 0.9% physiological saline until complete absorption, the absorption rate for each of the three times is not greater than 20 seconds.

Abstract: To provide a water disintegratable fibrous sheet with high water disintegratability and wet strength, that can be used as a cleaning sheet. A prescribed water disintegratable fibrous sheet comprising 30-50% by mass of unbeaten pulp (a) with a beating degree of 700 cc or greater; 20-40% by mass of beaten pulp (b) with a beating degree of 400-700 cc; 15-45% by mass of regenerated cellulose (c) with a beating degree of 700 cc or greater; and 2-15% by mass of fibrillated purified cellulose (d) with a beating degree of 0-400 cc.

Abstract: There is provided an absorbent article with excellent absorption performance. The absorbent article 1 of the invention comprises two or more absorbers 4, 5 that absorb body fluids of a user and are stacked in the thickness direction, a liquid-permeable sheet 2 covering one side of the two or more absorbers, through which body fluid of a user permeates, and a liquid-impermeable sheet 3 covering the other side of the two or more absorbers, through which body fluid of the user does not permeate, wherein the absorber 5 on the liquid-impermeable sheet 3 side of the two or more absorbers 4, 5 contains non-wood pulp and SAP, and the settling velocity of the non-wood pulp in water is between 2 seconds and 5 seconds.

Abstract: A water disintegratable leak-proof sheet for an absorbent article that has an excellent leak-proof property during wear and excellent water disintegrating property after disposal. The water disintegratable leak-proof sheet of the present disclosure has the following construction. A water disintegratable leak-proof sheet for an absorbent article comprising a water disintegratable base material layer and a water-insoluble and biodegradable resin layer on the water disintegratable base material layer, wherein the tearing strength in the planar direction of the water disintegratable leak-proof sheet is no greater than 0.15 N/40 mm in both a first direction and a second direction perpendicular to the first direction.

Abstract: There is provided a method for producing a nonwoven fabric that can produce a nonwoven fabric having high strength, high bulk and softness. The method for producing a nonwoven fabric according to the invention comprises a step of supplying a water-containing paper-making material onto a support to form a paper layer 21 on the support, a step of injecting a high-pressure water jet stream onto the paper layer 21 from a high-pressure water jet stream nozzle 12 provided above the support, a step of injecting high-pressure steam onto the paper layer 21 on which the high-pressure water jet stream has been injected, from a steam nozzle 14 provided above the support, and a step of drying the paper layer on which the high-pressure steam has been injected.

Abstract: Provided is a method for producing a functional material, including the steps of: bringing a polyvalent metal cation aqueous solution into contact with a base material; bringing a polyanion aqueous solution containing a functional component into contact with the base material previously in contact with the polyvalent metal cation aqueous solution to bond the polyvalent metal cations and the polyanions to each other, and thereby forming an insoluble compound containing the functional component; and drying the base material including the insoluble compound.

Abstract: An EBG (Electromagnetic Bandgap) structure includes a magnetic material portion at least in part. It is preferable to arrange the magnetic material portion close to or, if possible, in contact with a conductor forming the EBG structure, for example, at least a portion of a ground conductor, a conductor producing a capacitance, and/or a conductor producing an inductance, such as a via. Examples of the magnetic material portion include a ferrite plating film, a composite magnetic material layer including magnetic powder and resin binder, and the like.

Abstract: A cleaning tool includes a cleaning unit including a water-disintegrable cleaning substrate which is dispersible in water, and which holds a microcapsule encapsulating a cleaning component.

Abstract: Provided is a method for producing a functional material, including the steps of: bringing a polyvalent metal cation aqueous solution into contact with a base material; bringing a polyanion aqueous solution containing a functional component into contact with the base material previously in contact with the polyvalent metal cation aqueous solution to bond the polyvalent metal cations and the polyanions to each other, and thereby forming an insoluble compound containing the functional component; and drying the base material including the insoluble compound.

Abstract: The invention provides a method of producing an air-through nonwoven fabric comprising the steps of: forming a web comprising composite fibers comprising a first polylactic acid and a second polylactic acid having a lower melting point than the melting point of the first polylactic acid; a step of exposing the web to a first air-through treatment in the temperature range of the following temperature T1: glass transition temperature of second polylactic acid<T1<melting point of second polylactic acid; and a step of exposing the web that has been exposed to the first air-through treatment, to a second air-through treatment in the temperature range of the following temperature T2: melting point of second polylactic acid?5° C.?T2?melting point of second polylactic acid+15° C., to produce an air-through nonwoven fabric, wherein the degree of crystallinity of the air-through nonwoven fabric is in the range of 44% to 68%.

Abstract: It is an object of the invention to provide a moisture-permeable and waterproof film that is biodegradable, has high biomass and exhibits high flexibility. The moisture-permeable and waterproof film comprises polylactic acid and an inorganic filler, wherein the film has high-stretch regions (H1) and low-stretch regions (L1) each parallel to a first direction and alternating in the direction perpendicular to the first direction, the film has bending resistance in the range of 15-30 mm, and the film has moisture permeability in the range of 2,000-4,000 g/m2/24 hours.

Abstract: It is an object of the invention to provide a laminated sheet with air permeability, water disintegratability and water impermeability. The sheet with air permeability, water disintegratability and water impermeability comprises a base material layer with air permeability and water disintegratability and a hydrophobic fine particle layer, wherein the hydrophobic fine particle layer is situated on the base material layer, and the surface of the hydrophobic fine particle layer on the side that is not in contact with the base material layer has a fine irregular structure formed by layering of the hydrophobic fine particles.

Abstract: An absorbent core comprising a gelling region and a thickening region, as well as an absorbent article containing the absorbent core. The absorbent core formed from at least two layers. The absorbent core has in an upper layer gelling region comprising a gelling agent that contains a polysaccharide capable of thickening in the presence of a polyvalent metal ion and a substance that can supply a polyvalent metal ion, and has in a lower layer, thickening region comprising a thickening agent.