Unicharm Corporation

Hideyuki Ishikawa

Yuki Noda

Akihiro Kimura

Satoshi Mizutani

Toshio Kobayashi

Satoshi Mitsuno

Koichiro Tani

Katsuhiro Uematsu

Hisashi Takai

Kenichiro Kuroda

Miou Suzuki

Takeshi Bando

Masaki Yoshida

Kumiko Nishikawa

Daisuke Miyake

Ayako Moriya

Katsushi Tomita

Kouichirou Tani

As absorbent article for absorbing urine includes a topsheet which is a nonwoven fabric that has a skin-side surface having projections formed thereon. The content by percentage of fibers oriented in the thickness direction in each projection of the nonwoven fabric is greater than the content by percentage of fibers oriented in the thickness direction in sections of the nonwoven fabric other than the projections. The thickness of the nonwoven fabric when wet is greater than or equal to 85% the thickness of the nonwoven fabric when dry. The nonwoven fabric includes a first fiber layer and a second fiber layer. The first fiber layer is constituted by durable hydrophilic fibers, and the second fiber layer is constituted by durable hydrophilic fibers and non-durable hydrophilic fibers.

Absorbent article and wearable article including absorbent article

A multilayer nonwoven fabric includes a first fiber layer and a second fiber layer laminated and arranged on a first surface of the first fiber layer. A plurality of groove portions are formed along a prescribed direction in a shape depressed in a thickness direction of the multilayer nonwoven fabric. A plurality of raised ridge portions are formed adjacent to the plurality of groove portions in a shape projected in the thickness direction. The basis weight of the raised ridge portion is greater than the basis weight in regions, which include the bottoms of the groove portions. The second fiber layer including each of the plurality of raised ridge portions is in such a shape that a surface, on the side of the first fiber layer, of the second fiber layer is projected in the same direction as the direction in which the second surface of the first fiber layer is projected.

Multilayer nonwoven fabric and method of manufacturing the same

An absorbent article comprising nonwoven fabric having convex and concave surfaces, and that allows liquid such as excreta and the like to permeate quickly. A sanitary napkin has a plurality of raised ridge portions and groove portions in a top sheet member. The fiber density of the side edge portions of each of the plurality of raised ridge portions in the thickness direction of the nonwoven fabric is substantially uniform, and is higher than the average fiber density in the raised ridge portions. The fiber density of the central portion between both the side edge portions of each of the plurality of raised ridge portions is substantially uniform in the thickness direction of the nonwoven fabric, and is lower than the average fiber density in the raised ridge portions.

Absorbent article

The invention provides a nonwoven fabric having good fluid drawing properties, in which fluid hardly remains, a method for producing a nonwoven fabric, and an absorbent article. The nonwoven fabric has a thickness direction and a planar direction perpendicular to the thickness direction, and includes a high density region having a higher fiber density than an average fiber density. The high density region penetrates from one side to another side in the thickness direction.

Nonwoven fabric, method for producing nonwoven fabric, and absorbent article

The present invention provides an absorbent body containing absorbent fibers in which fiber orientation is mainly adjusted, and fiber basis weight and shape are additionally adjusted. The absorbent bodyof the present invention is an absorbent body containing absorbent fibers, a plurality of low fiber basis weight regions formed continuously in the first direction with a fiber basis weight that is less than an average fiber basis weight of the absorbent body, and a plurality of high fiber basis weight regions, formed along and on both sides of the low fiber basis weight regions in relation to the second direction perpendicular to the first direction, with a fiber basis weight that is greater than the average fiber basis weight of the absorbent body. The content of longitudinally oriented fibers in the fibersmaking up the high fiber basis weight regions is greater than that of laterally oriented fibers, and the content of longitudinally oriented fibers in the fibersmaking up the low fiber basis weight regions is greater than that of laterally oriented fibers.

Absorbent body, multilayer absorbent body and absorbent article

It is an objective of the present invention to provide a nonwoven fabric prepared so as to be able to rapidly transfer a predefined liquid. The nonwoven fabric is formed by jetting a fluid, which consists mainly of gaseous matter, to a fiber websupported from beneath by a predefined breathable support member, from an upper surface side in order to move fibers in the fiber web. A number of groove portionsand a number of convex portionsare formed on a jetted area of the nonwoven fabric in the direction in which the area is extended, and the fiber density of the groove portionsis less than the fiber density of the convex portions

Nonwoven fabric

A disposable diaper has a covering member adapted to cover a wearer's crotch and waist regions. The covering member includes an elastically stretchable first layer and an inelastically stretchable second layer formed with a plurality of continuous fibers. The continuous fibers are fixed to the first layer in at least two bonding zones. The covering member presents a particularly large value of L/D, a ratio of a length L of each continuous fiber and a distance D in straight line between each pair of the adjacent bonding zones.

Disposable diaper and process for making the same

A method of manufacturing a multilayer nonwoven fabric includes a supporting step of arranging on a predetermined surface of a permeable supporting member a multilayer fiber aggregate, a moving step of moving the multilayer fiber aggregate supported on the permeable supporting member in a prescribed direction by a predetermined moving device, and a spraying step of spraying a fluid onto the multilayer fiber aggregate moved in the prescribed direction in the moving step from the second surface by a predetermined spraying device.

Method of manufacturing multilayer nonwoven fabric

The present invention provides a nonwoven fabric of which at least one of fiber orientation, fiber density, and basis weight is adjusted, and in which at least one of a predetermined groove portion, an opening, and a protrusion is formed, a manufacturing method for the nonwoven fabric, and a nonwoven fabric manufacturing apparatus. The nonwoven fabric manufacturing apparatus of the present invention manufactures a nonwoven fabric of which at least one of fiber orientation, fiber density, and basis weight is adjusted, or in which at least one of a predetermined groove portion, an opening, and a protrusion is formed by blowing fluid mainly containing gas onto a fiber web which is formed in a sheet shape, and which is in a state where at least a portion of the fibers constituting the fiber aggregate has a degree of freedom.

Nonwoven fabric, nonwoven fabric manufacturing method, and nonwoven fabric manufacturing apparatus

A nonwoven fabric that is not easily damaged during use is provided. A fiber web supported by a predetermined supporting member from the lower face side is blown with fluid, mainly composed of gas, from the upper face side of the fiber web to move fibers that constitute the fiber web, thereby forming at least a plurality of open areas. The nonwoven fabric includes a plurality of open areas continuously formed along a predetermined direction with a predetermined interval and a plurality of joining portions, each of which are formed between the open areas adjacent to each other in a predetermined direction.

The present invention aims at providing a non-woven fabric having high-density regions and low-density regions dispersed horizontally, so as not to prevent liquid transfer from a surface sheet to an absorbent body and not to diffuse a liquid less during transfer, a manufacturing method thereof, and a disposable diaper made therefrom. The non-woven fabricincludes a plurality of high-density regionsand a plurality of low-density regionsdispersedly formed in a planar direction thereof. The high-density regionsare formed dominantly on at least one side of the non-woven fabric, and the low-density regionsare formed communicating both sides thereof.

Non-woven fabric, non-woven fabric manufacturing method and absorbent article

Disclosed is a wiper which is which is highly retentive of water, soft to the touch, and improved in sheet strength and a method for manufacturing the same. An interlining layer contains pulp fibers, first and second surfacing layers contain non-fusible fibers, and a reinforcing layer contains fusible fibers and rayon fibers. The fusible fibers are fusion-bonded but the non-fusible fibers remain unfused. Sheet surfaces are free from the fusible fibers.

Wiper and method for manufacturing the same

Nonwoven fabric has a plurality of groove portions continuously formed along a predetermined direction, and a plurality of raised ridge portions formed continuously along the groove portions, each adjacent to the groove portions. The basis weight is the least, and the content percentage of laterally-oriented fibers is high, and the content percentage of longitudinally-oriented fibers is low at the groove portions of the nonwoven fabric. Sides at the raised ridge portions are formed so that their basis weight is the greatest, and the content percentage of the fiber oriented toward a longitudinal direction is high.

Nonwoven fabric including concaves and convexes, and at least a fiber basis weight which is adjusted, and its manufacturing method are provided. The nonwoven fabricis formed into a substantially sheet-like shape of predetermined thickness and its fiber basis weight is adjusted by directing a fluid, mainly consisting of gas, to a fiber web, the fibers of which have a high degree of freedom to move. The nonwoven fabricincludes a plurality of groove portions, which are low basis weight portions, and a plurality of convex portions, which are high basis weight portions, that are continuously formed along the groove portionsand are adjacent to each of the plurality of groove portions. The Fiber basis weights of the plurality of groove portionsare less than those of the plurality of convex portions

A nonwoven fabric adjusted so that the fiber densities of convex portions and recessed portions are not excessively high. A plurality of open portions is formed by blowing fluid mainly composed of gas from the top side of a fiber web onto the fiber web supported from the bottom side thereof by a supporting member, and moving fiber constituting the fiber web. The nonwoven fabric is formed with the plurality of open portions continuously formed at predetermined intervals along a predetermined direction and a plurality of joining portions formed between the open portions adjacent thereto in a predetermined direction.

Growing community of inventors

Kagawa, Japan

Hideyuki Ishikawa