Unicharm Corporation

Shimpei Komatsu

Tatsuya Tamura

Satoshi Mizutani

Makoto Suekane

Yuki Noda

Ichiro Wada

Akira Hashino

Jun Kudo

Mitsuhiro Wada

Kenichiro Kuroda

Takuya Miyama

Masashi Nakashita

Masataka Kinoshita

Hideyuki Kinoshita

Beibei Su

In a pull-on absorbent article, pairs of joining sections that join an absorbent main body and a pair of belt sections to each other are provided, one pair being disposed on a front side and the other pair being disposed on a rear side in a front-rear direction, the absorbent main body including an absorbent body and being provided in a vertical direction, the pair of belt sections expanding and contracting in a lateral direction; a portion between the pair of joining sections on the rear side does not expand and contract in the lateral direction; an expanding-contracting section is provided closer than the absorbent body to a non-skin side of a wearer; and, in at least the rear side, the expanding-contracting section is provided at a central portion of the absorbent main body in the lateral direction.

Pull-on absorbent article with pair of belt sections

An absorbent article includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body between the liquid-permeable top sheet and liquid-impermeable back sheet. The liquid-permeable top sheet includes a blood modifying agent with an IOB of 0.00-0.60, a melting point of no higher than 45&#xb0; C., a water solubility of 0.00-0.05 g in 100 g of water at 25&#xb0; C., and a weight-average molecular weight of no greater than 1,000.

Absorbent article with blood modifying agent

An absorbent article includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body between the liquid-permeable top sheet and liquid-impermeable back sheet. The top sheet exhibits a color difference in a range of 37-80, based on the L*a*b* color system and measured from a skin contact surface of the top sheet in a liquid dropping test. Further, the top sheet has a color-reducing agent having an IOB of 0.00-0.35, a melting point of no higher than 45&#xb0; C. and a water solubility of 0.00-0.05 g in 100 g of water at 25&#xb0; C. The absorbent article is configured to allow a user to visually confirm reduction in residue of highly viscous menstrual blood on the top sheet after its absorption, thereby providing reassurance to the user.

Absorbent article

Disclosed is an absorbent article including a liquid absorbent layer for absorption and retention of liquid and a liquid passage layer located on a liquid-receiving side of the liquid absorbent layer. The liquid passage layer includes a first passage layer and a second passage layer disposed between the first passage layer and the liquid absorbent layer. The first passage layer and the second passage layer are resin films formed with a plurality of liquid passage apertures. The individual liquid passage apertures are defined by a peripheral wall projecting toward the liquid absorbent layer to provide the first passage layer and the second passage layer with thicknesses greater than a thickness of the resin film itself. Under a load in a thickness direction, the second passage layer has a greater compressibility than the first passage layer.

Disclosed is an absorbent article including: a liquid-permeable topsheet on its skin surface; a backsheet on its garment surface; and an absorbent layer therebetween. First compressed portions and second compressed portions, in which the absorbent layer is compressed together with at least the topsheet, extend longitudinally of the absorbent article. The first compressed portions are disposed symmetrically about a longitudinal centerline of the absorbent article to define a central absorbent portion having the absorbent layer therebetween. The second compressed portions are disposed symmetrically about the longitudinal centerline and spaced outwardly apart from the first compressed portions. When the central absorbent portion is laterally compressed by an external force, resilient portions each defined between each adjacent pair of first and second compressed portions are permitted to exert a resilience against compression on the central absorbent portion.

Absorbent article with resilient portion and method for manufacturing the same

Disclosed is an absorbent article including compressed grooves () and a rear flexible portion (). The compressed grooves () where a liquid absorbent layer () is compressed and recessed from the side of a skin surface toward a garment surface are provided to extend in a longitudinal direction of the article so as to approach each other the nearest on a lateral reference line (Ox-Ox) of the article. The rear flexible portion () where the liquid absorbent layer () is recessed from the side of the garment surface toward the skin surface is provided to extend toward a rear end edge () from a starting point () that is located closer to the rear end edge () than the lateral reference line (Ox-Ox). At least a portion of the rear flexible portion () is located between the compressed grooves ().

Absorbent article with compressed groove and flexible portion

Disclosed is an elongated absorbent article including a liquid absorbent layer. In a region where the liquid absorbent layer is present, compressed grooves are disposed to extend symmetrically about a longitudinal centerline, defining a central region therebetween and side regions laterally outside the central region and adjacent the compressed grooves. The central region includes front, intermediate and rear central regions. The intermediate central region has a widened portion in which the separation distance is larger than in regions positioned forward and rearward thereof. Stiffness of the side regions is lower in portions laterally outside the intermediate central region than in portions laterally outside the front and rear central regions.

Elongated absorbent article with compressed groove

Disclosed is an absorbent article including: a liquid-permeable topsheet on a skin surface; and a backsheet on a garment surface. First flexible hinges and second flexible hinges are formed to extend longitudinally of the absorbent article. The first flexible hinges are disposed symmetrically about a longitudinal centerline of the absorbent article to define a central absorbent portion having an absorbent layer therebetween. The second flexible hinges are disposed symmetrically about the longitudinal centerline and spaced outwardly apart from the first flexible hinges to define support portions between adjacent first and second flexible hinges and side portions outside the second flexible hinges. The first flexible hinges facilitate bending of the support portions from the central absorbent portion, and the second flexible hinges facilitate bending of the side portions from the support portions.

Absorbent article with flexible hinge

Disclosed is an elongated absorbent article, in which liquid passage holes and embossments are dispersed in a central region including a front portion and a rear portion. Aperture density obtained by dividing (total of areas occupied by the liquid passage holes in the front portion) by (area of the front portion) is higher than aperture density obtained by dividing (total of areas occupied by the liquid passage holes in the rear portion) by (area of the rear portion), while embossment density obtained by dividing (total of areas occupied by the embossments in the rear portion) by (area of the rear portion) is higher than embossment density obtained by dividing (total of areas occupied by the embossments in the front portion) by (area of the front portion).

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Kagawa, Japan

Shimpei Komatsu