Abstract: The purpose of this disclosure is to provide a process for producing stretch nonwoven fabric having excellent stretchability. This production process has the following configuration. The process for producing stretch nonwoven fabric comprises: a step in which nonwoven fabric to be treated which comprises stretchable fibers and extensible fibers is unevenly stretched, while being conveyed, so that nonwoven fabric having both higher stretched regions and lower stretched regions is formed; and a step in which the nonwoven fabric having both higher stretched regions and lower stretched regions is heated for 0.1-10 seconds at a temperature which is 40° C. or higher but is lower than the melting point of the stretchable fibers.

Abstract: A bodily fluid absorbent matrix adapted to restrict a wet feeling against the wearer's skin after the absorbent matrix in a bodily fluid absorbent wearing article having absorbed bodily fluids and a method for manufacturing the absorbent matrix. A bodily fluid absorbent wearing article has an absorbent matrix formed of aggregate of bodily fluid absorbent material between a liquid-permeable first sheet and a liquid-impermeable second sheet. The member includes hydrophilic fibers as the bodily fluid absorbent material. Density of the absorbent matrix changes so as to increase from the first sheet toward the second sheet in thickness direction of the absorbent matrix. A planar orientation index of the hydrophilic fibers also changes so as to increase in the thickness direction of the absorbent matrix.

Abstract: The purpose of this disclosure is to provide a process for producing stretch nonwoven fabric having excellent stretchability. This production process has the following configuration. The process for producing stretch nonwoven fabric comprises: a step in which nonwoven fabric to be treated which comprises stretchable fibers and extensible fibers is unevenly stretched, while being conveyed, so that nonwoven fabric having both higher stretched regions and lower stretched regions is formed; and a step in which the nonwoven fabric having both higher stretched regions and lower stretched regions is heated for 0.1-10 seconds at a temperature which is 40° C. or higher but is lower than the melting point of the stretchable fibers.

Abstract: The present invention provides a bodily fluid-absorbent structure improved so as to facilitate bodily fluids to disperse in a thickness direction of the structure. Core material of a bodily fluid-absorbent structure is formed of an aggregation of fluff wood pulp fibers. The aggregation has a basis mass in a range of 150 to 500 g/m2 and a specific volume in a range of 3 to 20 cc/g. In the aggregation, a relationship between horizontal orientation index IH and specific volume VSP of fluff wood pulp fibers is represented by a formula as follows: IH is less than or equal to ?0.099VSP+2.4.

Abstract: A bodily fluid absorbent matrix adapted to restrict a wet feeling against the wearer's skin after the absorbent matrix in a bodily fluid absorbent wearing article having absorbed bodily fluids and a method for manufacturing the absorbent matrix. A bodily fluid absorbent wearing article has an absorbent matrix formed of aggregate of bodily fluid absorbent material between a liquid-permeable first sheet and a liquid-impermeable second sheet. The member includes hydrophilic fibers as the bodily fluid absorbent material. Density of the absorbent matrix changes so as to increase from the first sheet toward the second sheet in thickness direction of the absorbent matrix. A planar orientation index of the hydrophilic fibers also changes so as to increase in the thickness direction of the absorbent matrix.

Abstract: The present invention provides a bodily fluid-absorbent structure improved so as to facilitate bodily fluids to disperse in a thickness direction of the structure. Core material of a bodily fluid-absorbent structure is formed of an aggregation of fluff wood pulp fibers. The aggregation has a basis mass in a range of 150 to 500 g/m2 and a specific volume in a range of 3 to 20 cc/g. In the aggregation, a relationship between horizontal orientation index IH and specific volume VSP of fluff wood pulp fibers is represented by a formula as follows: IH is less than or equal to ?0.099VSP+2.4.

Abstract: A receptacle of a bodily fluid trapping unit is defined by first and second sheets bonded together along respective peripheral edges thereof. The first sheet is formed with openings extending therethrough in its thickness direction. Backflow preventing means includes a flat valve disc provided on the side of the first sheet facing the receptacle, a sheet-like support base serving to prevent the valve disc from falling into the receptacle and a spacer interposed between the first sheet and the support base. A peripheral edge of the valve disc's upper surface is adapted to come in water-tight contact with the associated valve seat formed on the side of the opening's peripheral edge facing the receptacle. Between the first sheet and the support base, a space is defined by a spacer's opening so that the valve disc is movably supported in the thickness direction of the spacer.