Unicharm Corporation

Japan

Unicharm Corporation

Japan
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A fixing device that fixes an elastic sheet (8a) that is transported along a transport direction and a low-stretchable sheet (9a) that has lower stretchability than that of the elastic sheet via a plurality of fixing parts (j) while superposing the elastic sheet and the low-stretchable sheet in a thickness direction. The fixing device includes: a rotating member (15a) that includes a plurality of protrusions (15at) on an outer peripheral surface to form the plurality of fixing parts and rotates along the transport direction; and a sandwiching member (15h) that is arranged at a predetermined position of the rotating member in a rotational direction, and sandwiches the elastic sheet and the low-stretchable sheet by a surface portion (15hs) in cooperation with each of the protrusions to form the fixing parts when each of the protrusions passes through the predetermined position, the surface portion being larger than a top surface of each of the protrusions. At a sandwiching position in which the elastic sheet and the low-stretchable sheet are sandwiched cooperatively by the sandwiching member and the rotating member, the low-stretchable sheet is located between the elastic sheet and the top surface of each of the protrusions of the rotating member.


There is provided a cutter apparatus for cutting a composite sheet including a stretchable sheet and a low-extensible sheet, the low-extensible sheet being stacked on the stretchable sheet from a thickness direction and fixed to the stretchable sheet, the low-extensible sheet having an extensibility lower than that of the stretchable sheet. The cutter apparatus includes: a cutter blade that abuts the composite sheet from a side closer to the stretchable sheet; and a receiving section that have a surface area and that receives the cutter blade while abutting the composite sheet from a side closer to the low-extensible sheet.


Patent
Unicharm Corporation | Date: 2017-01-04

A method for manufacturing an absorbent article, including: while a lower bandlike member (15) is transported in a transport direction, a process in which a cutting position (CL) is determined, and an adhesion area (HMA) is formed by putting adhesive on a first area, the first area including the cutting position (CL) and having a predetermined width in the transport direction; a process in which elastic members (8B, 8F, 8L) are placed so that a part of each of the elastic members (8B, 8F, 8L) overlaps the adhesion area (HMA), the elastic members (8B, 8F, 8L) being stretched in the transport direction; a process in which the lower bandlike member (15) and the upper bandlike member (17) are stacked such that the elastic members (8B, 8F, 8L) being sandwiched between the lower and upper bandlike members (15, 17), and the upper bandlike member (17) adheres to the lower bandlike member (15) and the elastic members (8B, 8F, 8L) on the adhesion area (HMA); a process in which the lower bandlike member (15) and the upper bandlike member (17) are folded on a center portion in an intersecting direction; a process in which a welded section (s1) on which the lower bandlike member (15) and the upper bandlike member (17) are to be welded to each other is formed on a second area, the second area being located on both sides of the first area in the transport direction and having a predetermined width in the transport direction; and a process in which the lower bandlike member (15), the upper bandlike member (17) and the elastic members (8B, 8F, 8L) are cut together on the cutting position (CL) and the lower exterior member (15) and the upper exterior member (17) which are shaped in the form of underpants are cut and separated.


Patent
Unicharm Corporation | Date: 2017-02-01

The purpose of the present disclosure is to provide a wet wipe which achieves both wet-strength and water-dissolvability. The wet wipe comprises the following configuration. This water-dissolving wet wipe (1) comprises a multi-layer sheet (4) provided with a first sheet (2) and a second sheet (3), said wet wipe (1) being characterized in that: the first sheet (2) comprises a first hydrophilic fiber-containing layer (2a) and a first hydrophobic fiber-containing layer (2b), and the second sheet (3) comprises a second hydrophilic fiber-containing layer (3a) and a second hydrophobic fiber-containing layer (3b); the multi-layer sheet (4) has a plurality of junction parts (5) at predetermined intervals; the plurality of junction parts (5) occupy 0.5% to 12.0% of the surface area; the first sheet (2) and the second sheet (3) each have a separability of less than or equal to 100 seconds; the multi-layer sheet (4) has a bending resistance of less than or equal to 150 mm; and the wet wipe (1) has a tensile strength of greater than or equal to 1.0 N/25 mm.


Patent
Unicharm Corporation | Date: 2017-02-08

The present invention pertains to a nonwoven fabric that can effectively allow the passage of high-viscosity waste. The nonwoven fabric (1) is formed from a substrate (10), which extends in an approximately planar shape and has a first surface (FF) and a second surface (FS) positioned at the reverse side from the first surface, and a plurality of protrusions (12), which protrude from the substrate to the first surface side. The fiber density of the first surface side is greater than the fiber density of the second surface side at the apices of the protrusions.


Patent
Unicharm Corporation | Date: 2017-03-08

An underpants-type absorbent article configured with an absorbent article having an abdomen side part that is to be arranged on an abdomen side of a wearer, a back side part that is to be arranged on a back side of the wearer and a crotch part that is to be arranged to a crotch of the wearer when worn, the absorbent article being welded at respective horizontally outward end parts of the abdomen side part and the back side part when the absorbent article is in a state folded into two at the crotch part with the abdomen side part overlapping the back side part to form a body encircling opening and a pair of leg encircling openings at mutually different locations along a vertical direction that intersects the horizontal direction, the underpants-type absorbent article includinga plurality of welded parts that are formed at the end part in a non-continuous welding pattern along at least the vertical direction; andan inner area and an outer area that are included in the end part, the inner area being located horizontally inward and the outer area being located horizontally outward with respect to the inner area; whereinthe welded parts are formed to a predetermined range along the vertical direction, the predetermined range starting from the body encircling opening of the end part, such that a vertical dimension of a space between vertically adjacent welded parts in the inner area is made larger than the vertical dimension of a space between the vertically adjacent welded parts in the outer area, andthe welded parts each has on the body encircling opening side a slanted shape portion, the slanting portion slanting toward the leg encircling opening in the vertical direction as approaching to an outside along the horizontal direction, the welded parts being formed in pluralities and arranged along the vertical direction at the inner area in the predetermined range.


Patent
Unicharm Corporation | Date: 2017-01-04

There is provided a method for manufacturing an absorbent article, the method including: while a lower bandlike member (15) is transported in a transport direction, a process in which a cutting position (CL) is determined and an adhesion area (HMA) is formed by putting adhesive on each side of the cutting position (CL) of the lower bandlike member (15) in the transport direction; a process in which elastic members (8B, 8F and 8L) are placed so that a part of each of the elastic members (8B, 8F and 8L) overlaps the adhesion area (HMA), the elastic members (8B, 8F and 8L) being stretched in the transport direction; a process in which an upper bandlike member (17) is stacked on and adheres to the lower bandlike member (15) and the elastic member on the adhesion area (HMA); a process in which the lower bandlike member (15) and the upper bandlike member (17) are folded on the center in the intersecting direction; a process in which a welded section (sl) on which the lower bandlike member (15) and the upper bandlike member (17) are to be welded to each other is formed on each side of the cutting position (CL) in the transport direction; a process in which and the lower bandlike member (15), the upper bandlike member (17) and the elastic members (8B, 8F and 8L) are cut together on the cutting position (CL), a lower exterior member (15) and an upper exterior member (17) which are shaped in the form of underpants are cut and separated, the elastic members (8B, 8F and 8L) which are stretched in the transport direction contract towards the adhesion area (HMA) from positions at which the elastic members (8B, 8F and 8L) are cut, the contraction being performed while the elastic members (8B, 8F and 8L) shifting relative to the lower exterior member (15) and the upper exterior member (17)


Patent
Unicharm Corporation | Date: 2017-01-04

A method for manufacturing an absorbent article, including: while lower bandlike member (15) is transported in a transport direction, a process in which a cutting position (CL) is determined, and an adhesion area (HMA) is formed by putting adhesive on each side of the cutting position (CL) of the lower bandlike member (15) in the transport direction; a process in which a plurality of elastic members (8B, 8F, 8L) are placed so that a part of each the elastic members (8B, 8F, 8L) overlaps the adhesion area (HMA), the elastic members (8B, 8F, 8L) being stretched in the transport direction; a process in which an upper bandlike member (17) is stacked on the lower bandlike member (15) and the elastic members (8B, 8F, 8L), and the upper bandlike member (17) adheres to the lower bandlike member (15) and the elastic members (8B, 8F, 8L) on the adhesion area (HMA); a process in which the lower bandlike member (15) and the upper bandlike member (17) are folded on a center position in an intersecting direction; a process in which the elastic members (8B, 8F, 8L) are cut at a single position between a pair of the adhesion areas (HMA) which are respectively formed on both sides of the cutting position (CL), and the elastic members (8B, 8F, 8L) contract towards the adhesion area (HMA) from positions at which the elastic members (8B, 8F, 8L) are cut; a process in which a welded section (s1) on which the lower bandlike member (15) and the upper bandlike member (17) are to be welded to each other is formed on each side of the cutting position (CL) in the transport direction; and a process in which the lower bandlike member (15) and the upper bandlike member (17) are cut together on the cutting position (CL).


Patent
Unicharm Corporation | Date: 2017-02-08

The present invention provides an absorbent article that has flexible cushioning properties, favorable rebound when compressed, superior collection of waste, and superior liquid migration properties from a surface sheet to an absorbent element. The absorbent article has: a surface sheet (2), which has a textured structure used at the skin surface side of the absorbent article, and has first protrusions (21) protruding to the skin surface side and second protrusions (22) protruding to the clothing side at the reverse of the skin surface side; and an absorbent element (4) disposed at a position overlapping the surface sheet (2) in a plan view. The surface sheet (2) and the absorbent element (4) are joined in a planar manner at a join section at the apices (22T) of the second protrusions (22).


Patent
Unicharm Corporation | Date: 2017-02-01

A manufacturing apparatus for manufacturing an absorbent article, the manufacturing apparatus including: an upstream transport mechanism and a downstream transport mechanism that transports a stretchable sheet-like member along a transporting direction, the stretchable sheet-like member continuing along the transporting direction; an extension-ratio adjustment mechanism that is located between the upstream transport mechanism and the downstream transport mechanism, and that adjusts an extension ratio at which the stretchable sheet-like member extends in the transporting direction; and a processing apparatus that performs the certain process to the stretchable sheet-like member that is being transported by the downstream transport mechanism. When the upstream transport mechanism transports a first stretchable sheet-like member in which parts to be the absorbent article are lined up at a first pitch in the transporting direction, the extension-ratio adjustment mechanism adjusts an extension ratio of the first stretchable sheet-like member so that the parts to be the absorbent article are lined up at a predetermined pitch. When the upstream transport mechanism transports a second stretchable sheet-like member in which the parts to be the absorbent article are lined up at a second pitch in the transporting direction, the second pitch being different from the first pitch, the extension-ratio adjustment mechanism adjusts an extension ratio of the second stretchable sheet-like member so that the parts to be the absorbent article are lined up at the predetermined pitch.

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