Unicharm Corporation

Masashi Nakashita

Ichiro Wada

Yuki Noda

Akira Hashino

Hisashi Takai

Masashi Uda

Mitsuhiro Wada

Hideyuki Kinoshita

Shimpei Komatsu

Hikari Kawata

Kaori Yamauchi

Takayoshi Konishi

Tatsuya Tamura

Satoshi Mitsuno

Miou Suzuki

Hiroki Goda

Shinichi Ishikawa

Kazuaki Onishi

Satoru Tange

Koichiro Mitsui

Kengo Ochi

Maki Watanabe

A top sheet includes a skin contact surface configured to contact the skin of a wearer. The skin contact surface includes at least one projection and at least one recess. The top sheet further includes a back surface opposite the skin contact surface. The top sheet further includes a coating on the at least one projection. The coating essentially includes a blood slipping agent having a kinematic viscosity of 0.01 to 80 mm/s at 40&#xb0; C., a water holding percentage of 0.01 to 4.0 mass %, and a weight-average molecular weight of less than 1,000, and the coating is configured to slip from the skin contact surface, through the top sheet, to the back surface along with menstrual blood.

Absorbent article

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 object of the present disclosure is to provide an absorbent article without a sticky feel on the top sheet and with a smooth top sheet, not only when a large amount of menstrual blood has been absorbed, but even when a small amount of menstrual blood has been absorbed. The absorbent article of the present disclosure is as follows. An absorbent article comprising 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, wherein the liquid-permeable top sheet comprises a blood slipping agent having a kinematic viscosity of 0.01 to 80 mm/s at 40&#xb0; C., a water holding percentage of 0.01 to 4.0 mass %, and a weight-average molecular weight of less than 1,000, on at least the projection in an excretory opening contact region.

The present invention addresses the problem of providing an absorbent article that has an improved ability to transfer menstrual blood from a liquid-permeable layer to an absorbent body and can reduce the amount of the menstrual blood remaining in the liquid-permeable layer. To solve this problem, provided is a sanitary napkin provided with a top sheet, a back sheet and an absorbent body that is interposed between the top sheet and the back sheet, wherein convex portions formed in an excretion orifice contact region of the top sheet are coated with a blood lubricity-imparting agent that has a kinetic viscosity of 0.01-80 mm/s at 40&#xb0; C., a water retention rate of 0.01-4.0 mass % and a weight-average molecular weight of less than 1,000.

An absorbent body in absorbent articles that causes exudates to disperse in a planar direction and a method of producing the same. The absorbent body has an absorbent core material covered with a cover sheet. The core material has a mass per unit area of 650 g/mor less and includes a first liquid absorbent layer containing hydrophilic fibers and superabsorbent polymer particles in a mixed state and a second liquid absorbent layer containing the hydrophilic fibers but none of the superabsorbent polymer particles, wherein the first liquid absorbent layer and the second liquid absorbent layer are overlap with each other and the hydrophilic fibers are in contact with each other between the first liquid absorbent layer and the second liquid absorbent layer.

Absorbent body in absorbent article and method for producing the same

The objective of the present disclosure is to provide an absorbent article () having a high fiber density region () in which absorbed menstrual blood is not easily retained, so that after menstrual blood has been absorbed, feelings of stickiness are not easily caused on a top sheet (), and the top sheet () remains dry. The absorbent article () of the present disclosure has a liquid-permeable top sheet (), a liquid-impermeable back sheet (), and an absorbent body (). The absorbent article () is characterized by: the top sheet () having, in an excretory orifice contact region (A), a high fiber density region () and a low fiber density region (); the top sheet () containing, in the excretory orifice contact region (A), a prescribed blood lubricating agent (); and the basis weight of the blood lubricating agent () in the high fiber density region () being larger than the basis weight of the blood lubricating agent () in the low fiber density region ().

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.

A nonwoven fabric with excellent feel on the skin, excellent air permeability and liquid permeability, and high deformability and superior recoverability. The nonwoven fabric comprises composite fibers that include a first component, and a second component having a lower melting point than the first component, wherein detached portions are created by detaching at least a portion of the second component from the first component and/or the residual portion of the second component, and at least some of the detached portions are tangled and/or fused with other composite fibers.

Nonwoven fabric, absorbent article comprising the same, and method of forming the same

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.

Absorber forming crossbridge upon absorbing

A water-absorbent structure comprises an assembly of thermoplastic synthetic fibers, cellulose-based fibers, super-absorbent polymer and water-pervious sheets wrapping these components together. The assembly is a honeycomb construction having a plurality of through-holes and normally in a compressed state. Upon water permeation into the water-absorbent structure, the super-absorbent polymer is swollen and softened and the assembly is swollen so that the through-holes restore the initial state before the assembly has been compressed.

Water-absorbent structure and process for making the same

Here is disclosed a pad being relatively large in its longitudinal direction and comprising a liquid-pervious topsheet, a liquid-impervious backsheet, a liquid-absorbent core interposed between these top- and backsheets and an cover sheet lying outside the backsheet and extending from an intermediate region to a rear region of the pad. The cover sheet has fixed side edge portions fixed to transversely opposite side edges of the pad, a fixed end portion fixed to a rear end portion of the pad and a free portion extending between the fixed side edge portions and the fixed end portion and let free from the pad so that a pocket opening from the side of the front region toward the side of the rear region is defined between the backsheet and the cover sheet.

Disposable body fluid absorbent pad

A disposable body fluid absorbent pad comprises a liquid-pervious topsheet, a liquid-impervious backsheet, a liquid-absorbent core interposed between these sheets and a strap adapted to pull the pad in a longitudinal direction. The strap comprises first and second straps attached to transversely opposite side edge margins of the pad, respectively, so to extend outward from an end margin of a front region. These first and second straps have inner fixed portions fixed to the topsheet, outer fixed portions fixed to the backsheet and hand-grips extending between the inner fixed portions and the outer fixed portions, respectively.

A body fluid absorbent wearing article includes a liquid-absorbent panel. The panel is composed of a first fibrous assembly panel lying on the side of a topsheet and a second fibrous assembly panel underlying the first sub-panel. The first sub-panel has a flat portion, a plurality of protuberant portions and a plurality of wall portions. The first sub-panel has a fiber density that increases toward the second sub-panel which has a fiber density higher than that of the first panel.

Growing community of inventors

Kanonji, Japan

Masashi Nakashita