JP2019076499A5 - - Google Patents

Description

As described above, the pocket portion P is formed in the portion where the inelastic region 25 and the uneven region F overlap. Hereinafter, the portion Pa (see FIG. 11) in which the inelastic region 25 and the uneven region F overlap is also referred to as a pocket scheduled portion Pa. From the viewpoint that the pocket portion P can be easily formed, the pocket planned portion Pa has a ratio (W1 / LP) of the length W1 in the width direction Y (see FIG. 11) to the length LP (see FIG. 11) in the longitudinal direction X. ) Is preferably 1 or more, more preferably 2 or more, preferably 15 or less, more preferably 10 or less, and preferably 1 or more and 15 or less, more preferably 2 or more and 10 or less. The length LP of the planned pocket portion Pa in the longitudinal direction X is preferably 10 mm or more, more preferably 15 mm or more, preferably 80 mm or less, more preferably 60 mm or less, and preferably 10 mm or more and 80 mm or less. It is preferably 15 mm or more and 60 mm or less. The length W1 of the planned pocket portion Pa in the width direction Y is substantially equal to or slightly longer than the length W5 of the absorbent core 14a in the same direction Y. The length W5 (see FIG. 11) of the absorbent core 14a in the width direction Y is the maximum length of the absorbent core 14a in the width direction Y in the back side portion B.

In the second joint portion 32, the length d in the longitudinal direction X is preferably 20% or more and 85% or less, more preferably 30% or more and 70% or less of the length b in the longitudinal direction of the first joint portion 31. .. Further, in the second joint portion 32, the length c in the width direction Y is preferably 0.8 times or more and 1.2 times or less of the length a in the width direction Y of the first joint portion 31, more preferably. It is 0.9 times or more and 1.1 times or less.

From the viewpoint of more reliably achieving the effect of easily bending the central uneven region F1 in the width direction Y and more reliably capturing the excrement between the concave portions between the central convex portions 41, the central convex region is convex. The height H1 of the portion 41 [see FIG. 6 (a)] is preferably 0.6 mm or more, more preferably 1.0 mm or more, preferably 5.0 mm or less, still more preferably 4.0 mm or less. Further, it is preferably 0.6 mm or more and 5.0 mm or less, and more preferably 1.0 mm or more and 4.0 mm or less.
The height H3 of the side convex portion 43 [see FIG. 7B] is preferably 0 from the viewpoint of ensuring that the effect of facilitating the bending of the side uneven regions F2 and F2 in the longitudinal direction X is more reliably achieved. 5.5 mm or more, more preferably 1.0 mm or more, still more preferably 5.0 mm or less, still more preferably 4.0 mm or less, and preferably 0.5 mm or more and 5.0 mm or less, still more preferably 1.0 mm. It is 4.0 mm or less.

Claims (12)

It is provided with a front surface sheet having an uneven region, a back surface sheet, and an absorbent core arranged between these sheets, and has a longitudinal direction corresponding to the front-rear direction of the wearer and a width direction orthogonal to the longitudinal direction, and the wearer. An absorbent article having a ventral portion located on the ventral side of the body, a dorsal portion located on the dorsal side of the wearer, and a crotch located between them.
The dorsal portion has an elastic region in which an elastic member extending in the width direction is arranged at least in the central portion in the width direction, and the elastic member is located between the elastic region in the longitudinal direction and the absorbent core. Has an inelastic region where is not arranged
The surface sheet has an uneven region at a portion overlapping the inelastic region.
In the uneven region, convex portions projecting toward the skin side of the wearer are formed in a predetermined pattern, and the vertical groove portions continuous in the longitudinal direction through the plurality of the convex portions and the plurality of said portions. It has a lateral groove portion that passes between the convex portions and is continuous in the width direction.
The vertical groove portion is an absorbent article having a degree of meandering larger than that of the horizontal groove portion. The absorbent article according to claim 1, wherein the vertical groove portion and the horizontal groove portion are continuous through a part around each of the plurality of convex portions. The absorbent article according to claim 1 or 2, wherein the convex portion has a length in the width direction longer than a length in the longitudinal direction. The surface sheet has a pair of side regions located on both sides of the central region in the width direction, and the side regions include the convex portion, the vertical groove portion, and the vertical groove portion formed in a pattern different from the central region. Each has a lateral groove,
The absorbent article according to any one of claims 1 to 3, wherein the lateral groove portion in the side region has a degree of meandering equal to or greater than that of the vertical groove portion. The absorbent article according to claim 4, wherein the degree of meandering of the flutes in the side region is smaller than the degree of meandering of the flutes in the central region. The absorbent article according to claim 4 or 5, wherein at least a part of the side region overlaps with the elastic region. Sheets for forming a three-dimensional gather having elastic members are arranged on both sides of the absorbent article in the longitudinal direction, and due to the contraction of the elastic members, the crotch portion in the wearing state is placed on the skin side of the wearer. The absorbent article according to any one of claims 4 to 6, wherein a three-dimensional gather that stands up toward the surface is formed, and a fixed end of the sheet for forming the three-dimensional gather is joined to the side region of the surface sheet. .. The absorbent article according to any one of claims 1 to 7, wherein the convex portions are formed in a staggered arrangement in the uneven region. The absorbent article according to any one of claims 1 to 8, wherein the absorbent core is obliquely cut out at a corner of the dorsal side. In the concavo-convex region, a plurality of rows of longitudinal convex portions in which the plurality of the convex portions are connected in series along the longitudinal direction at regular intervals are formed in the width direction, and the plurality of the convex portions are at regular intervals. A plurality of rows of convex portions in the width direction in series along the width direction are formed in the longitudinal direction.
A vertically long first joint having a length in the longitudinal direction longer than the length in the width direction is formed between the convex portions adjacent to each other in the longitudinal direction in the row of convex portions in the longitudinal direction.
The absorbent article according to any one of claims 1 to 9, wherein the first joint has a length in the longitudinal direction of 1.2 times or more and 5.0 times or less of the length in the width direction. .. The convex portion is surrounded by a first joint portion and a second joint portion having a length shorter in the longitudinal direction than the first joint portion, and the second joint portion is in the longitudinal direction. The absorbent article according to claim 10, wherein the length is 20% or more and 85% or less of the length of the first joint portion in the longitudinal direction. The absorbent article according to claim 11, wherein the second joint portion has a length in the width direction of 0.8 or more and 1.2 or less of the length in the width direction of the first joint portion.