WO2019131275A1

WO2019131275A1 - Panty-type absorbent article

Info

Publication number: WO2019131275A1
Application number: PCT/JP2018/046323
Authority: WO
Inventors: 井上　拓也; 秀晃槇; 哲郎大窪; 紀子清水
Original assignee: ユニ・チャーム株式会社
Priority date: 2017-12-28
Filing date: 2018-12-17
Publication date: 2019-07-04
Also published as: CN111565689A; RU2020124745A3; RU2020124745A; JP2019118584A; CN111565689B; JP6676609B2

Abstract

Provided is a panty-type absorbent article (1) having a vertical direction, left-right direction, and front-back direction, and comprising an absorbent core (11A), a ventral waist-encircling section (20), and a dorsal waist-encircling section (30), the panty-type absorbent article (1) being characterized in that the absorbent core (11A) comprises at least one compressed part (E) of a prescribed length in the left-right direction in a region overlapping the ventral waist-encircling section (20) and/or the dorsal waist-encircling section (30).

Description

Pants-type absorbent article

The present invention relates to a pant-type absorbent article.

DESCRIPTION OF RELATED ART Conventionally, a pants-type disposable is known as an example of an absorbent article. For example, Patent Document 1 discloses a disposable diaper 10 having a front waist area 11, a back waist area 12, and an absorbent structure 21.

JP, 2017-12459, A

However, in disposable diaper 10 like patent document 1, although front waist area 11 and back waist area 12 tend to follow a wearer's movement, absorption structure 21 is front waist area 11 and back waist area 12 Since the thickness is larger than that, the absorbent structure 21 may float on the non-skin side when the wearer moves.

The present invention has been made in view of the above problems, and an object of the present invention is to make the disposable diaper more fit to the wearer's body.

The main invention for achieving the above object is a pant-type absorbent article having an up-down direction, a left-right direction, and a front-back direction, and having an absorbent core, a ventral waist part and a back waist part. The absorbent core has at least one pressing portion having a predetermined length in the left-right direction in an overlapping region overlapping in the front-rear direction with at least one of the ventral-side waist portion or the back-side waist portion. It is a pants-type absorbent article characterized by the above.
Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.

According to such a pants-type absorbent article, by improving the rigidity in the left-right direction of the absorbent core, it is easy to keep the absorbent core flat, and the risk of the absorbent core floating on the non-skin side is reduced. It can be done.

FIG. 1A is a schematic perspective view of a shorts-type disposable diaper 1. FIG. 1B is a view showing an example of a worn state of the diaper 1. FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side. FIG. 3 is a schematic cross-sectional view taken along line AA in FIG. FIG. 4 is a schematic cross-sectional view taken along the line BB in FIG. FIG. 5 is a view for explaining the absorber 11. FIG. 6 is a schematic diagram for explaining the configuration of the schematic plan view of FIG. FIG. 7A is a view for explaining the size of the leg-surrounding opening LH of the diaper 1. FIG. 7B is a schematic cross-sectional view of the absorbent core 11A in the region indicated by the arrow XX in FIG. 7A. FIG. 8 is a diagram for explaining the stretchable regions Df, Db and the non-stretchable regions Ff, Fb. FIG. 9 is a view for explaining an absorber 11 according to another embodiment. FIG. 10 is a view for explaining the pressing portion E according to another embodiment, and the stretchable regions Df and Db and the non-stretchable regions Ff and Fb. FIG. 11 is a view for explaining a squeezed portion according to another embodiment, and the stretchable regions Df and Db and the non-stretchable regions Ff and Fb. FIG. 12 is a schematic plan view of the unfolded and stretched diaper 1 according to another embodiment as viewed from the skin side.

At least the following matters will be made clear by the present specification and the description of the accompanying drawings.
It is a pants-type absorbent article which has an up-down direction, a left-right direction, and a front-back direction, and has an absorptive core, a ventral waist part, and a back waist part, and said absorptive core is said ventral waist part or It is a pants-type absorbent article characterized by having at least one pressing portion having a predetermined length in the left-right direction in an overlapping region overlapping in the front-rear direction with at least one of the back waistline portions. .

In the pants-type absorbent article, it is preferable that the sum of the lengths in the left and right direction of all the pressing portions provided in the overlapping region be larger than the sum of the lengths in the up and down directions.

According to such a pants-type absorbent article, the rigidity of the lateral direction is improved by the squeezing portion as compared with the case where the sum of the lengths in the lateral direction of all the squeezing portions is smaller than the sum of the lengths in the vertical direction. be able to.

In the pants-type absorbent article, the ventral waistline portion and the back waistline portion respectively have waist stretchable members that expand and contract in the left-right direction, and the ventral waistline portion and the back waistline portion Each of the elastic members includes an elastic region that expands and contracts with the waist elastic member and a non-elastic region that does not expand and contract, and it is desirable that at least one pressing portion overlaps the non-elastic region in the front-rear direction.

According to such a pants-type absorbent article, even in the non-stretching area where the contraction force does not work, the rigidity of the pressing portion can make the absorbent core difficult to separate from the skin of the wearer.

In the pants-type absorbent article, the squeezing portion is a center of the squeezing portion in the lateral direction of the squeezing portion, which is a straight line along the lateral direction, the center of the absorbent core in the lateral direction, The region is provided at the center in the lateral direction of the belly-side waist portion, and the lateral ends of the squeezing portion are respectively provided on the outer side than the both ends in the lateral direction of the non-stretchable region Is desirable.

According to such a pants-type absorbent article, the absorbent core can be easily kept in contact with the skin.

In the pants-type absorbent article, the center of the compressed portion in the left-right direction is the center of the absorbent core in the left-right direction, and the non-stretchable region is the ventral waistline portion and the back waistline portion It is desirable that the center portion in the left and right direction is provided, and the both ends in the left and right direction of the pressing portion are respectively provided inside the both ends in the left and right direction of the non-stretchable region.

According to such a pants-type absorbent article, the area of the absorbent core which is shrunk and stiffened by contraction of the waist elastic member on the ventral side is further hardened, thereby improving the touch when worn. be able to.

In the pants-type absorbent article, the center of the compressed portion in the left-right direction is the center of the absorbent core in the left-right direction, and the non-stretchable region is the ventral waistline or the back waistline Provided at the center in the left-right direction, and at least one of the ventral-side waist portion or the back-side waist portion has both ends in the left-right direction of the compressed portion at both ends in the left-right direction of the non-stretchable region A long squeezing portion provided on the outer side of each other, and a short squeezing portion in which both ends in the left and right direction of the squeezing portion are respectively provided inside the both ends in the left and right direction of the non-stretchable region; It is desirable to have.

According to such a pants-type absorbent article, by having the long pressing portion, the absorbent core is kept in contact with the skin, and by having the short pressing portion, the contraction of the waist-surrounding stretch member on the belly side causes contraction. The hardness of the region of the absorbent core which has become harder can be reduced to improve the feel when worn.

In the pants-type absorbent article, the ventral waistline portion and the back waistline portion each have the squeezing portion, and the center of the squeezing portion in the lateral direction is the lateral direction of the absorbent core. The non-stretchable region is provided at the center of the ventral waistline and the back waistline in the left-right direction, and the lateral ends of the pressing portion of the ventral waistline are The non-stretchable regions are respectively provided on the outer side than both ends in the left-right direction, and the left and right directions of the compressed portion of the back waistline part are more than the two ends in the left-right direction of the non-stretchable regions. It is desirable that each be provided inside.

According to such a pant-type absorbent article, the rigidity of the absorbent core on the front side, in which the absorbent core tends to protrude to the front side, is increased in the lateral direction to reduce the protrusion of the absorbent core to the front side. The posterior core portion, which has relatively little protrusion of the sex core, can lower the lateral stiffness of the absorbent core to facilitate conform to the wearer's body shape.

In the pants-type absorbent article, the ventral waistline portion and the back waistline portion each have the squeezing portion, and the center of the squeezing portion in the lateral direction is the lateral direction of the absorbent core. The non-stretchable region is provided at the center of the ventral waistline and the back waistline in the left-right direction, and the lateral ends of the pressing portion of the ventral waistline are The non-stretchable area is provided on the inner side of both ends in the left and right direction, and the left and right ends of the compressed portion of the back waistline portion are more than the two ends in the left and right direction of the non-stretchable area. It is desirable to provide each on the outside.

According to such a pants-type absorbent article, on the ventral side, since the abdomen of the baby's body bulges forward, the absorbent core shrunk by the contraction of the waist elastic member and the pressing portion overlap and become hard. On the back side, the absorbent core can be made to be easily adhered to the skin by providing a long pressing portion in the lateral direction on the back side.

In the pants-type absorbent article, the ventral waistline portion and the back waistline portion respectively have waist stretchable members that extend and contract in the left-right direction, and at least one of the waist extendable members in the front-rear direction Is preferably overlapped with the pressing portion.

According to such a pants-type absorbent article, since the force to expand and contract in the left and right direction acts directly on the squeeze portion, the waist elastic member overlapping the squeeze portion in the front and rear direction maintains the absorbent core in contact with the skin It becomes easy to do.

In the pants-type absorbent article, it is preferable that the absorbent core has a through hole penetrating in the front-rear direction, and the pressing portion and the through hole overlap in the vertical direction.

According to such a pants-type absorbent article, it is possible to make it easy to maintain the shape of the absorbent core due to the rigidity of the pressing portion, of the absorbent core which is easily deformed by the through holes.

In the pants-type absorbent article, it is preferable that a plurality of the pressing portions be arranged at equal intervals in the vertical direction.

According to such a pant-type absorbent article, equal rigidity can be given to the absorbent core by providing the compressed portions at equal intervals.

In such a pants-type absorbent article, the absorbent core is folded in two and has a front core portion located on the front side and a rear core portion located on the rear side, and the front core portion is It has a narrow part whose length in the lateral direction is shorter than the upper part, and at least a part of the narrow part is provided above the lower end of the ventral waistline part, and the pressing part is narrow It is desirable to be provided in the department.

According to such a pants-type absorbent article, the wearer closes the leg in the left-right direction, while making it easy to move the wearer's leg in a posture in which the leg is exposed forward like a baby by the narrow part. Even when lateral forces are concentrated at the left and right ends of the front core portion 11Af of the narrow width portion, the shape of the absorbent core can be easily maintained by providing the squeezed portion to enhance the lateral rigidity. it can.

In the pants-type absorbent article, a plurality of the pressing portions are provided in the overlapping region and a non-overlapping region not overlapping in the front-rear direction with the absorbent core and the ventral waist part, and the absorbent The core is folded in two and has a front side core portion positioned on the front side and a rear side core portion positioned on the rear side, and the lowermost one of the plurality of pressing portions provided in the overlapping region The distance between the lower waist pressing portion located and the adjacent lower waist pressing portion adjacent to the upper waist lower pressing portion is the lowermost one of the plurality of pressing portions provided in the non-overlapping region. It is desirable that the distance between the lower pressing portion located in the lower portion and the adjacent lower pressing portion adjacent to the lower pressing portion from the upper side be larger than the distance between the lower pressing portion and the adjacent lower pressing portion.

According to such a pants-type absorbent article, more pressing parts can be provided in the part where the absorbent core is easily deformed to improve the rigidity, and the part where the deformation of the absorbent core is small can be pressed. Fewer parts can be provided.

In the pants-type absorbent article, an interval between the lower pressing portion and the adjacent lower pressing portion is an upper pressing portion located at the uppermost side among the plurality of pressing portions provided in the non-overlapping region. It is desirable that the distance between the lower portion and the adjacent upper pressing portion adjacent to the upper pressing portion from the lower side be smaller than the distance between the upper portion and the adjacent upper pressing portion.

=== Embodiments ===
<<< Basic configuration of pants-type disposable diapers >>>
FIG. 1A is a schematic perspective view of a shorts-type disposable diaper 1. FIG. 1B is a view showing an example of a worn state of the diaper 1. FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side. FIG. 3 is a schematic cross-sectional view taken along line AA in FIG. FIG. 4 is a schematic cross-sectional view taken along the line BB in FIG. In the “deployed state”, the bonding of the side portion 20 a of the ventral waist portion 20 and the side portion 30 a of the back waist portion 30 of the both sides of the diaper 1 is separated and opened to open the entire diaper 1 planarly. It is in an expanded state. The “stretched state” indicates a state in which the stretchable member provided in the diaper 1 is stretched to such an extent that the wrinkles of the diaper 1 can not be visually recognized. Specifically, a state is shown in which the dimensions of each member (for example, belly-side waist portion 20 and the like described later, etc., which will be described later) constituting the diaper 1 are elongated until they match or close to the dimensions of the single member. The line CC in FIG. 2 is a center line in the left-right direction. In FIG. 3, the adhesive is omitted for convenience.

As shown in FIG. 1, the pants-type diaper 1 has a vertical direction, a lateral direction, and a longitudinal direction, and the diaper 1 is formed with a waist opening BH and a pair of leg openings LH. In the vertical direction, the waist opening BH side is the upper side, and the crotch side of the wearer is the lower side. The vertical direction of the diaper 1 in the state of FIG. 2 (expanded and stretched) is also referred to as “longitudinal direction”, one side in the longitudinal direction as “ventral side”, and the other side as “back side”. Is also called "the lower side". In the front-rear direction, the front side of the wearer is referred to as the front side, and the back side of the wearer is referred to as the back side. Moreover, as shown in FIG. 3, the diaper 1 has a thickness direction, and in the thickness direction, the side in contact with the wearer is a skin side, and the opposite side is a non-skin side.

The diaper 1 is a so-called three-piece type, and has an absorbent main body 10, a ventral waist portion 20, and a dorsal waist portion 30. The ventral waistline 20 covers the ventral side of the wearer, and the dorsal waistline 30 covers the dorsal side of the wearer. The absorptive main body 10 is a planar view substantially rectangular shape. As shown in FIG. 3, the upper end on the ventral side and the upper end on the back of the absorbent main body 10 are respectively superimposed on the skin side surfaces of the

waist portions

20 and 30. The ventral-side waist portion 20 and the back-side waist portion 30 have a substantially rectangular shape in plan view, and the longitudinal direction thereof is along the left-right direction.

As shown in the unfolded state of FIG. 2, the diaper 1 has a symmetrical shape with respect to the center line C-C. The non-skin side of the upper end on the ventral side and the upper end on the dorsal side of the absorbent main body 10 and the skin side of the

waist portion

20, 30 are joined by an adhesive (not shown), and the unfolded state shown in FIG. Then, the absorbent main body 10 is folded in half at the central portion C10 so that the ventral waist portion 20 and the back waist portion 30 face each other, and the lateral portions 20a of the ventral waist portion 20 in the lateral direction and the back waist portion 30 The diaper 1 becomes a pants type by joining the left and right side portions 30a of the

The ventral waist portion 20 and the back waist portion 30 respectively include

flexible skin sheets

21 and 31 such as non-woven fabric,

non-skin sheets

22 and 32, and waist

elastic members

23 and 33. With the waist

elastic members

23, 33, the ventral waist portion 20 and the back waist portion 30 can be extended and contracted to fit the waist of the wearer. The

skin side sheets

21 and 31 and the

non-skin side sheets

22 and 32 are non-stretchable sheets that do not substantially have stretchability in the left-right direction as each sheet alone. As the

skin side sheets

21 and 31 and the

non-skin side sheets

22 and 32, SMS non-woven fabric (spun-bond / melt-blown / spun-bond non-woven fabric), spun-bonded non-woven fabric, air-through non-woven fabric, plastic sheet, apertured plastic sheet, laminate sheet thereof, etc. Can be used.

The belly-side waist elastic member 23 is a plurality of thread rubbers 23 a that expand and contract in the right and left directions and an elastic sheet 23 b that expands and contracts in the vertical and horizontal directions. The thread rubber 23a is fixed between the skin side sheet 21 and the non-skin side sheet 22 and in the state extending in the left and right direction with a space in the vertical direction in the entire area except the upper end of the ventral side waist portion 20. It is done. The stretch sheet 23 b is disposed on the non-skin side of the absorbent main body 10 between the non-skin side sheet 22 and the skin side sheet 21 folded back from the non-skin side to the skin side, and the belly side waistline portion 20 It is fixed to the upper end portion of in the state of being extended in the left and right direction. The stretch sheet 23b is appropriately stretched such as a gear stretch having a polyurethane elastomer, which is a thermoplastic elastomeric fiber having elasticity, and a polypropylene (PP) of a polyolefin resin, which is a thermoplastic resin fiber having non-elasticity. It is a non-woven fabric treated with a treatment, a stretchable film sheet made of plastic, and the like.

As described above, by arranging the stretchable sheet 23b without arranging the rubber thread 23a at the upper end portion of the ventral-side waist portion 20, the upper end portion of the ventral-side waist portion 20 fits the wearer on the surface. Therefore, it is possible to suppress local tightening of the abdomen and make it difficult for a trace of tightening on the skin by the ventral torso elastic member 23 to remain. In particular, since the abdomen of the baby is pushed forward as compared to the back side, it is more preferable to reduce the possibility that the ventral waistline 20 is locally tightened.

The back waistline elastic member 23 is a plurality of thread rubbers 33 which extend in the left-right direction and are spaced apart in the vertical direction from the upper end portion to the lower end portion of the back waistline portion 30, and the skin side sheet 31 And the non-skin sheet 32 are fixed in a state of being stretched in the left-right direction.

The ventral waistline portion 20 and the back waistline portion 30 are stretchable regions Df and Db which extend and contract together with the ventral waistline stretch member 23 and the back waistline stretch member 33, respectively, the belly side waist stretch member 23 and the back waistline stretch It has non-stretching regions Ff and Fb which do not extend and contract with the member 33. FIG. 8 is a diagram for explaining the stretchable regions Df, Db and the non-stretchable regions Ff, Fb. In FIG. 8, the expansion and contraction regions Df and Db are indicated by hatching on the lower right side, and the non-expansion and contraction regions Ff and Fb are indicated on the left lower hatching. The non-stretchable regions Ff and Fb are provided at the center in the left-right direction of each of the ventral-side waist portion 20 and the back-side waist portion 30 and in the region overlapping in the front-rear direction with the absorbent core 11A. By providing the non-stretchable regions Ff, Fb, the possibility of the absorbent core 11A being contracted in the left-right direction and deformed due to the contraction of the

stretchable members

23, 33 is reduced.

FIG. 4 is a schematic cross-sectional view taken along the line BB in FIG. FIG. 4 shows the dimensions appropriately changed so that the configuration can be easily understood in the thickness direction. As shown in FIG. 4, the absorbent main body 10 includes a pair of leakproof wall members 15, a top sheet 12, an absorber 11, a back sheet 13, and an exterior sheet 14 in order from the skin side in the thickness direction, Each is adhered by an adhesive such as a hot melt. The top sheet 12 may be a liquid permeable sheet, and examples thereof include hydrophilic air through non-woven fabric and spun-bonded non-woven fabric. The back sheet 13 may be a liquid impervious sheet, and may be a polyethylene film, a polypropylene film, a hydrophobic SMS non-woven fabric, or the like. The top sheet 12 and the back sheet 13 are sized to cover the entire absorbent body 11. The leak-proof wall member 15 and the exterior sheet 14 may be a liquid-permeable sheet or a liquid-impermeable sheet, and examples thereof include a hydrophobic SMS non-woven fabric and the like. However, in the present embodiment, since the leakproof wall portion 50 and the leg gathers portion 60 are respectively formed by the leakproof wall member 15 and the exterior sheet 14, the leakproof wall member 15 and the exterior sheet 14 are liquid impervious materials. It is preferred to be configured.

The absorber 11 has a substantially rectangular shape in plan view, and includes an absorbent core 11A that absorbs and holds a liquid such as urine, and a core wrap sheet 11B that covers the outer peripheral surface of the absorbent core 11A. FIG. 5 is a view for explaining the absorber 11. As core wrap sheet 11B, liquid permeable sheets, such as tissue paper and a nonwoven fabric, can be illustrated. In FIG. 5, for convenience, the absorbent core 11A covered by the core wrap sheet 11B is indicated by a solid line.

The absorbent core 11A is formed by forming a liquid absorbent fiber such as a pulp containing a high absorbent polymer (SAP) into a substantially hourglass shape. In the present embodiment, the basis weight of the liquid absorbent fiber of the absorbent core 11A is substantially uniform throughout the absorbent core 11A. In the absorbent core 11A, the portion located on the ventral side (front side) from the central portion C10 is the front core portion 11Af, and the portion located on the back side (rear side) from the central portion C10 is the rear core portion 11Ab . As shown in FIG. 5 and the like, the central portion in the longitudinal direction of the absorbent core 11A is narrowed by shortening the length in the left-right direction. Specifically, a front width narrow portion (also referred to as a "width narrow portion") 11fn below the upper portion 11fu of the front core portion 11Af and a rear width narrow portion below the upper portion 11bu of the rear core portion 11Ab 11bn is provided. The length in the longitudinal direction of the front narrow side portion 11fn is longer than the length in the longitudinal direction of the rear side narrow portion 11bn. Further, the narrowest portion 11n, which is the portion where the length in the left-right direction of the absorbent core 11A is the shortest, is provided in the narrow portion 11fn of the front core portion 11Af. By providing the front narrow side portion 11fn in the front core portion 11Af, even when the infants who are often in a posture in which the leg is brought forward are worn by the infant and the leg is closed in the lateral direction, the absorbent core It is possible to reduce the risk that 11A will interfere with leg movement.

Furthermore, in the absorbent core 11A, a plurality of compressed portions E having a shape along the left-right direction are provided at predetermined intervals in the up-down direction. The pressing unit E will be described later. Further, by providing the rear core portion 11Ab with a slit (through hole) S penetrating in the thickness direction (longitudinal direction), the absorbent core 11A easily conforms to the shape of the buttocks of the wearer.

The pair of leak preventing wall members 15 constitute a pair of leak preventing wall portions 50. The pair of leak preventing wall portions 50 is a so-called three-dimensional gather and is provided on both sides in the left-right direction of the absorber 11 along the longitudinal direction of the absorbent main body 10. Specifically, the fold portion of the leakproof wall member 15 folded in half with the plurality of leakproof wall expansion / contraction members 51 interposed therebetween is disposed inside in the left-right direction, and the side of the absorbent main body 10 in the left-right direction It is provided from the end to a position where it is superimposed on the side portion in the left-right direction of the absorber 11.

FIG. 6 is a schematic diagram for explaining the configuration of the schematic plan view of FIG. 6, for convenience, the waist

elastic members

23, 33, the slit S, and the like are omitted from the schematic plan view of FIG. The pair of leak preventing wall portions 50 extend in a longitudinal direction (vertical direction) and a plurality of end bonding portions 52 and a pair of side bonding portions 53 for bonding the leak preventing wall member 15 to the exterior sheet 14 and the top sheet 12. The leakage preventing wall elastic member 51 is provided, and the skin side is provided with a pair of fixing

portions

55, 55 that can not stand up, and a pair of standing portions 56 that can stand up on the skin side. In the leak-proof wall 50, each region from the upper end on the side of the ventral-side waist portion 20 to the lower end of the end joint 52 and the region from the upper end on the back-side waist portion 30 to the lower end of the end junction 52 is a fixing portion 55. Then, in the leak-proof wall 50, a region below the lower end of the end joint 52 on the side of the abdominal waist portion 20 and below the lower end of the end junction 52 on the side of the back waist portion 30. Is the standing portion 56. The leaked wall portion 50 blocks the excrement that has flowed laterally.

The pair of end joint portions 52 and the pair of side joint portions 53 are portions joined by an adhesive such as a hot melt adhesive. In addition, joining of the end junction part 52 and the side junction part 53 may fix not only by fixation with an adhesive agent, but may be squeezed, crimped, etc. FIG.

The pair of end joint portions 52 is disposed at both end portions in the longitudinal direction of the absorbent main body 10, and is a “bonded portion” for making the fixing portion 55 unable to stand on the skin side. The end joint portion 52 is provided from the end of the absorbent main body 10 to the position overlapping the upper end of the absorbent body 11 in the longitudinal direction. A pair of side joint parts 53 are provided from one end to the other end of the absorbent main body 10 in the longitudinal direction and one provided from the ventral end of the absorbent main body 10 to the central part C10 in the longitudinal direction There is. They are respectively disposed outside the end joint 52 in the left-right direction.

In the leak preventing wall portion 50, the contraction of the leak preventing wall expansion / contraction member 51 enables the rising portion 56 to stand on the skin side with a portion adjacent to the side joint portion 53 from the inner side in the left-right direction. In addition, it becomes easy to make the leakproof wall part 50 contact a wearer's skin by a surface in the standing-up state of the leakproof wall part 50 by spacing the leakproof wall expansion members 51 apart and providing them with a touch It can be improved.

The exterior sheet 14 constitutes a pair of leg gathers 60 provided with leg elastic members 16. The leg gathers portion 60 is a portion that forms the leg opening LH, and the contraction of the leg elastic member 16 fits the wearer's leg.

Both end portions in the left-right direction are folded back inside, and the leg elastic member 16 is disposed between the folded back sheets 14 to configure the leg gather portion 60. The leg elastic member 16 is a plurality of thread rubbers along the longitudinal direction, and is stretched in the longitudinal direction of the absorbent main body 10 between the exterior sheet 14 folded back inward in the left-right direction to form two layers. It is fixed in the

When thread rubber is used as the leg elastic member 16, it is preferable to arrange a plurality of them, and more preferably 5 or more. In FIG. 2 etc., eight leg elastic members 16 are arranged side by side in the left-right direction. If there is only one leg elastic member 16, there is a risk that the wearer's leg may be locally tightened, but by providing more leg elastic members 16, the leg gather portion 60 is entirely This makes it easy to fit in a plane and can reduce the possibility of locally tightening the legs of the wearer.

As described above, since the ventral waist part 20 and the back waist part 30 are provided with the

telescopic members

23 and 33 which respectively expand and contract in the left and right direction, the

telescopic members

23 and 33 can be used according to the movement of the baby who is the wearer. Is made to fit around the torso of the baby by stretching. On the other hand, the absorptive main body 10 is not provided with the expansion-contraction member expanded-contracted to the left-right direction. Therefore, even if the infant moves and the belly-side waist portion 20 and the back-side waist portion 30 follow the movement, the absorbent main body 10 hardly follows the belly-side waist portion 20 and the back-side waist portion 30. When the baby moves the body, the central portion of the absorbent main body 10 may float on the non-skin side and may be separated from the baby's body. In particular, in the diaper 1 shown in FIG. 1A and the like, a non-stretchable area Ff provided in a region overlapping the absorbent core 11A in the front-rear direction at the center in the left-right direction of each of the ventral waist part 20 and the back waist part 30. , Fb does not expand and contract in the left and right direction, so as shown in FIG. 1B, when the baby whose leg is put forward moves the leg, the non-stretchable areas Ff and Fb of the absorbent core 11A in the absorbent main body 10 The central portion of the absorbent main body 10 in the non-stretchable region L overlapping in the front-rear direction may float on the non-skin side. In this case, there is a possibility that the excrement may leak from the central portion in the left-right direction of the absorbent main body 10 upward.

In order to reduce the possibility of the absorbent main body 10 separating from the baby's body, the absorbent core 11A of the diaper 1 is provided with a pressing portion E. Hereinafter, the pressing unit E will be described.

=== Pressing part E ===
The squeezed portion E is formed of an absorbent core 11A before processing, in a roll gap between a convex roller (not shown) having a plurality of projections and an anvil roller (not shown) having a flat surface. It is formed by performing a pressing process from the non-skin side. FIG. 7B is a schematic cross-sectional view of the absorbent core 11A in the region indicated by the arrow XX in FIG. 7A. The area | region which has not performed pressing processing among the absorptive core 11A is the non-pressing part U. FIG.

The pressed part E is a groove formed by pressing, the density of the liquid absorbent fibers such as pulp is higher than that of the non-pressed part U, and the rigidity is higher than that of the non-pressed part U. In the present embodiment, the depth of the groove of the pressing portion E is substantially uniform. Depending on the depth of the groove, the density of the liquid absorbent fiber changes, and the deeper the groove, the higher the density of the liquid absorbent fiber, and the shallower the groove, the lower the density of the liquid absorbent fiber. As shown in FIG. 5 etc., the pressing part E has a shape along the left-right direction, the length We in the left-right direction is 70 mm, the length De in the vertical direction of the pressing part E is 3 mm, and the pressing part E is It arrange | positions at equal intervals in the direction, and the space | interval Du of the pressing parts E adjacent to an up-down direction is 10 mm. Moreover, the center of the left-right direction of the pressing part E is the center of the absorptive core 11A, and the absorptive core 11A is a symmetrical shape.

The non-pressed part U is thicker than the pressed part E. Therefore, it is preferable that the absorbent core 11A have a convex portion and a concave portion on the non-skin side. As shown in FIG. 7B, the absorbent core 11A is generally flat on the skin side, and has projections and depressions on the non-skin side. The convex portion is the non-pressing portion U, and the concave portion is the pressing portion E. In this way, the skin side of the absorbent core 11A of the pants-type diaper 1 is turned inside, and when it is folded in half at the central portion in the longitudinal direction, the absorbent core 11A at the skin side of the absorbent core 11A. It can prevent that the convex part and the concave part interfere with each other to make it difficult to bend the absorbent core 11A. Further, by making the skin side surface substantially flat, it is possible to reduce the possibility that the wearer may feel discomfort due to the unevenness of the absorbent core 11A or the highly rigid compressed portion E.

As shown in FIG. 2 and the like, in the absorbent core 11A, a non-overlapping region 11Qf and a non-overlapping region which do not overlap with the overlapping region 11Pf and the overlapping region 11Pb overlapping respectively in the anterior-posterior direction It has an overlapping area 11Qb. And the pressing part E is each provided in overlap area | region 11 Pf and overlap area | region 11 Pb, and the rigidity of the left-right direction is improved. As a result, the overlapping region 11Pf and the overlapping region 11Pb whose rigidity is improved can easily maintain the planar shape in the left-right direction. Of the absorbent core 11A, the absorbent core 11A can be moved even if the baby moves by increasing the rigidity in the left-right direction of the overlapping region 11Pf and the overlapping region 11Pb that may float to the non-skin side due to the movement of the baby. The planar shape along the left-right direction can be easily maintained, and the absorbent main body 10 can be easily maintained in a state of being fitted to the baby's body. As a result, it is possible to reduce the possibility that the excrement may leak upward from the upper end of the central portion in the left-right direction of the absorbent main body 10.

In addition, although the pressing part E was provided in both the overlap area | region 11Pf and overlap area | region 11Pb in this embodiment, you may provide the compression part E in any one area | region. For example, since the infant has a posture in which the leg is brought forward, the squeezed portion E may be provided only in the ventral overlapping region 11Pf where deformation tends to occur more frequently. However, by providing the pressing portions E in both the overlapping region 11Pf and the overlapping region 11Pb, the absorbent main body 10 on both the ventral side and the back side is less likely to float on the non-skin side, so that the absorbent main body 10 is Makes it easier to fit the baby's body.

Moreover, in FIG. 2 etc., although the some pressing part E was put in order and arrange | positioned in the longitudinal direction, at least one pressing part E may be provided in overlapping area 11Pf or overlapping area 11Pb. Even in the case of one pressing portion E, the rigidity in the left-right direction of the overlapping region 11Pf or the overlapping region 11Pb can be improved. However, as shown in FIG. 2 etc., the rigidity of the left-right direction can be improved more by providing the several pressing part E in 11 A of absorptive cores.

Furthermore, as shown in FIG. 2 etc., it is preferable to arrange a plurality of pressing parts E at equal intervals in the vertical direction. Since equal rigidity can be provided to the absorbent core 11A in the vertical direction by the pressing portions E arranged at equal intervals in the vertical direction, it is easy to reduce the possibility of the absorbent core 11A being deformed in a biased manner. .

By providing the center in the left-right direction of the compressed portion E at the center in the left-right direction of the absorbent core 11A and in the center in the left-right direction of the absorbent main body 10, the absorbent core 11A is in the left-right direction Can reduce the risk of biased deformation.

The sum (ΣWe) of the lengths We in the left-right direction of all the compressed portions E provided in the overlapping area 11Pf is larger than the sum (ΣDe) of the lengths De in the vertical direction (ΣWe> ΣDe). That is, as shown in FIG. 5, in the front core portion 11Af, the pressing portions E1, E2, and E3 are arranged in order from the belly side in the front core portion 11Af. At this time, the sum (We1 + We2 + We3) of the length We of all the pressing portions E (E1, E2, E3) provided in the overlapping region 11Pf is the upper and lower sides of all the pressing portions E (E1, E2, E3) Preferably, it is larger than the direction length (De1 + De2 + De3). As a result, the absorbent core 11A is smaller than in the case where the sum (ΣWe) of the lengths in the lateral direction of all the compressed portions E provided in the overlapping region 11Pf is smaller than the sum (ΣDe) of the lengths in the vertical direction. The rigidity in the left-right direction can be increased, and the absorbent core 11A can be easily maintained in a planar shape. The same applies to the pressing portions E4, E5, and E6 provided in the overlapping region 11Pb of the back waistline portion 30.

The pressing portion E may have a desired shape such as a curved shape or a shape having one or more corners. However, even if it is a desired shape, the sum (ΣWe) of the lengths We in the left and right direction of all the compressed parts E is larger than the sum (ΣDe) of the lengths De in the vertical direction (ΣWe> ΣDe) Is preferred. Making the rigidity in the left-right direction of the absorbent core 11A higher than in the case where the sum (の長 We) of the lengths in the left-right direction of all the compressed parts E is smaller than the sum (ΣDe) of the lengths in the vertical direction It is because it can.

It is more preferable that the pressing part E has a linear shape along the left-right direction. Since the region in which the rigidity is increased is a straight line along the left and right direction, the rigidity in the left and right direction of the absorbent core 11A is easily increased, and it is easy to secure a space for storing excrement.

In the vertical direction, the dimension Du of the interval between the adjacent pressing portions E is longer than the dimension (De) of the pressing portions E (De <Du). That is, since the interval (Du) of the pressing portions E adjacent to each other in the vertical direction is longer than the length (De) of the pressing portion E in the vertical direction, in the vertical direction, the rigidity of the pressing portions E is higher than that in the region , The region where the rigidity of the non-pressing portion U is low is longer. Therefore, the fear that the absorbent core 11A becomes too hard can be reduced by the compressed portion E, and the touch felt by the wearer can be improved.

Furthermore, it is more preferable that the length (We) of the pressing part E provided in the front side narrow part 11fn is equal to or longer than the length (Wn) of the narrowest part 11n in the left-right direction. The absorbent core 11A having the front narrow side portion 11fn and the narrowest portion 11n has lower rigidity in the left-right direction than an absorbent core having no front side narrow portion 11fn or the like. Therefore, by providing the pressing portion E having a length equal to or greater than the length in the left-right direction of the narrowest portion 11n having the lowest rigidity in the left-right direction, the length in the left-right direction of the pressing portion E is the left-right direction of the narrowest portion 11n The rigidity in the left-right direction of the absorbent core 11A can be made higher than in the case where the length is shorter than the length. In addition, the rigidity of the left-right direction of absorptive core 11A becomes high, so that the length (We) of the left-right direction of the pressing part E is lengthened.

In the overlap region 11Pf of the front core portion 11Af or the overlap region 11Pb of the rear core portion 11Ab, the lateral end of the pressing portion E is not in contact with the lateral end of the front core portion 11Af or the rear core 11Ab. Is more preferred. That is, in FIG. 5, in the overlapping regions 11Pf and 11Pb, the non-squeezed portion U is provided between each end in the left-right direction of the pressed portion E and the end in the left-right direction of the front core portion 11Af and the rear core portion 11Ab. ing. Since the overlapping area 11Pf and the overlapping area 11Pb are areas close to the abdomen and the back, when the pressing portion E is formed wide, the wearer may feel the hardness of the absorbent core 11A. Therefore, the movement of the wearer's abdomen, groin, back and buttocks can be restricted, and the absorbent core 11A can be prevented from becoming excessively hard.

As shown in FIG. 2 etc., by providing a narrow portion 11fn whose length in the left-right direction is shorter than the upper portion 11fu above the lower end of the ventral-side waist portion 20 of the front core portion 11Af, It reduces the risk of obstructing the movement of the baby's legs in the position shown. At this time, it is preferable to provide one or more pressing parts E in the narrow part 11 fn above the lower end of the ventral-side waist part 20. That is, it is preferable to provide one or more pressing parts E in the overlapping area 11Pf of the front core part 11Af and in the narrow part 11fn. When the infant closes the leg in the left-right direction, the force from the left-right direction tends to be concentrated at the end in the left-right direction of the narrow portion 11fn in the absorbent core 11A. Therefore, the narrow portion 11fn is likely to be deformed particularly in the lateral direction. In order to prevent this, it is overlap area 11Pf where the force from the horizontal direction tends to concentrate, and squeezed part E is provided in narrow part 11fn to enhance the rigidity in the horizontal direction to reduce the deformation of absorbent core 11A. Is preferred.

Moreover, as shown in FIG. 8, it is preferable that the pressing part E is provided in the position which overlaps with the non-stretching area | region Ff and the non-stretching area | region Fb in the front-back direction. In this way, the compressed portion E increases the rigidity in the left and right direction of the overlapping region 11Pf and the overlapping region 11Pb, so it is easy to keep the non-stretchable region Ff and the non-stretchable region Fb that are easily deformed by the movement of the baby in a planar shape. It is possible to reduce the risk of the absorbent main body 10 being separated from the baby's body.

Furthermore, it is preferable that the both ends of the left-right direction of pressing part E of front side core part 11Af or back side core part 11Ab are each provided outside rather than non-contraction field Ff or non-contraction field Fb. As shown in FIG. 2, in the diaper 1, both ends in the left-right direction of the pressing portion E of the front core portion 11 </ b> Af are provided outside the non-stretchable region Ff. In the non-stretchable region Ff, the absorbent main body 10 tends to float away from the wearer's skin by the movement of the leg of the baby. Therefore, by enhancing the rigidity of the absorbent core 11A over a region longer in the left-right direction than the non-stretchable region Ff, it is easy to maintain the absorbent main body 10 in contact with the skin. In addition, since both ends in the left and right direction of the pressing part E are respectively provided in the expansion and contraction area Df, the expansion and contraction area Df applies a force to extend in the left and right direction to both ends of the compression part E. The portions of the absorbent main body 10 overlapping in the front-rear direction are also easily maintained in contact with the skin of the wearer, and easily fit to the body.

It is preferable to have the pressing part E which has overlapped with the thread rubber 23a in the front-back direction like front core part 11Af of FIG. When the thread rubber 23a overlapping in the front-rear direction with the pressing part E expands or contracts, the pressing part E overlapping in the front-rear direction with the thread rubber 23a is applied with a force for extending in the left-right direction. This facilitates maintenance and reduces the risk of the absorbent main body 10 being separated from the baby's body. The rear core portion 11Ab may have the same configuration.

Moreover, the both ends of the left-right direction of pressing part E of front side core part 11Af or back side core part 11Ab may each be provided inside the non-contraction area | region Ff or the non-contraction area | region Fb. As shown in FIG. 2, in the diaper 1, both ends in the left-right direction of the compressed portion E of the rear side core portion 11 </ b> Af are provided inside the non-stretchable region Fb. The area where the absorbent core 11A and the rear waist elastic member 33 overlap in the front-rear direction is a portion that tends to be hard when the rear waist elastic member 33 contracts. If the pressing part E is provided in the part that tends to be hard, the hardness may be further increased, and the touch felt by the baby may be reduced. Therefore, the touch at the time of wear can be improved by providing both ends in the left-right direction of the pressing portion E of the rear side core portion 11Af inside the both ends of the non-stretchable region Fb. That is, when it is desired to improve the feel of the absorbent main body 10 rather than fitting the absorbent main body 10 to the body, both left and right ends of the pressing portion E of the front core portion 11Af or the rear core portion 11Ab are It is preferable to provide the non-stretchable area Ff or the non-stretchable area Fb on the inner side, respectively.

As in the diaper 1, the left and right ends of the compressed portion E of the front core portion 11Af are respectively provided outside the non-stretchable region Ff, and the both ends of the pressed portion E of the rear core portion 11Af are not stretched It is more preferable to provide each on the inner side than the region Fb. By making the rigidity in the left-right direction of the front core portion 11Af in which the absorbent core is easily deformed by the baby's leg higher, the deformation of the front core portion 11Af is reduced, and the rear core portion 11Ab with relatively small deformation is obtained. The rigidity of the absorbent core 11A can be improved by further reducing the rigidity in the left-right direction, and the absorbent core 11A can be made easy to conform to the body of an infant.

As shown in FIG. 2 etc., it is preferable that the pressing part E and the slit S have overlapped in the up-down direction. The slit S is provided to make the absorbent core 11A conform to the shape of the buttocks of the baby, but there is a possibility that the absorbent core 11A may be deformed starting from the slit S due to the movement of the baby. Therefore, the absorbent core 11A can be easily maintained in a planar shape including the region in which the slit S is formed by providing the pressing portion E at a position overlapping the slit S in the vertical direction.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, it goes without saying that the present invention can be modified or improved without departing from the gist thereof, and that the present invention includes equivalents thereof. For example, the following modifications are possible.

In the above-mentioned embodiment, although the linear pressing part E along the left-right direction was provided, the shape of a pressing part is not restricted to this. If it is the pressing part E which has predetermined length in the left-right direction, it can be set as desired shapes, such as a waveform. FIG. 9 is a view for explaining an absorber 11 according to another embodiment. In FIG. 9, although the absorbent core 11A and the like are covered with the core wrap sheet 11B, they are indicated by solid lines for the sake of convenience. As shown in FIG. 9, it may be a mountain shaped pressing portion E having a convex shape on the ventral side. The pressing portion E has a continuous pressing shape which is continuous from one side to the other side in the left-right direction. Of the upper ends of the pressing parts E, the smaller one of the angles formed by the straight line connecting the part Ek located on the uppermost side from the part Ej located on the lowermost side in the left-right direction and the straight line along the lateral direction It is preferable that θe be smaller than 45 degrees (θe <45 °). As a result, since the rigidity of the absorbent core 11A can be made higher by the compressed portion E than when θe is 45 degrees or more, the absorbent core 11A can be easily maintained in a planar shape.

Also in this case, the sum (ΣWe) of the length We in the left-right direction of all the compressed portions E provided in the overlapping area 11Pf is larger than the sum (ΣDe) of the length De in the up-down direction (> We> ΣDe ). That is, as shown in FIG. 9, in the plurality of pressing portions E provided in the overlapping region 11Pf, the pressing portions E21, E22, and E23 are arranged in order from the belly side along the longitudinal direction. At this time, the sum (We21 + We22 + We23) of the length We of all the pressing portions E (E21, E22, E23) provided in the overlapping region 11Pf is all the pressing portions E (E21) provided in the overlapping region 11Pf. , E22, E23) is preferably larger than the vertical length (De21 + De22 + De23). As a result, the absorbent core 11A is smaller than in the case where the sum (ΣWe) of the lengths in the lateral direction of all the compressed portions E provided in the overlapping region 11Pf is smaller than the sum (ΣDe) of the lengths in the vertical direction. The rigidity in the left and right direction of can be increased. Although the pressing portion E provided in the overlapping region 11Pf of the front core portion 11Af has been described, the same applies to the pressing portion E provided in the overlapping region Pb of the rear core portion 11Ab.

Moreover, the length of the horizontal direction of the pressing part E given to the absorptive core 11A and the length of an up-down direction may not necessarily be the same. Although the pressing part E of the diapar 1 made the length of the left-right direction of all the pressing parts E the length in the up-down direction the same, it can also be set as respectively different length.

For example, as shown in FIG. 10, the lengths in the left-right direction of the plurality of pressing portions E provided in the overlapping region 11Pf may be different from each other. FIG. 10 is a view for explaining the pressing portion E according to another embodiment, and the stretchable regions Df and Db and the non-stretchable regions Ff and Fb. Specifically, it has a short pressing portion Es located at the uppermost side and having the shortest length in the left-right direction, and a long pressed portion Et located at the lowermost side and having the longest length in the left-right direction. Both ends in the left-right direction of the short compressed part Es are provided respectively inside the ends in the left-right direction of the non-stretchable area Ff, and both ends in the left-right direction of the long compressed part Et are both ends in the left-right direction of the non-stretched area Ff Each is provided outside. That is, the length in the left-right direction of the short compressed portion Es is longer than the length in the left-right direction of the non-stretchable region Ff, and the length in the left-right direction of the long pressed portion Et is shorter than the length in the left-right direction of the non-stretched region Ff. By doing this, the length of the pressing portion E in the left-right direction is made longer in the lower region where the absorbent main body 10 tends to float to the non-skin side according to the movement of the infant's leg in the overlapping region 11Pf. The rigidity in the left and right direction is further enhanced. On the other hand, in the overlapping region 11Pf, in the region far from the infant's leg, in the upper region where the movement of the absorbent body 10 is small, the length of the pressing portion E in the left-right direction is shortened, and the absorbent core 11A is excessive. And can reduce the risk of deterioration in the touch.

Moreover, in the above-mentioned embodiment, the both ends of the horizontal direction of the pressing part E provided in overlap area 11Pf of front side core part 11Af are provided outside the both ends of non-stretching area Ff, and the overlapping area of back side core part 11Ab Although the both ends of the horizontal direction of the pressing part E provided in 11Pb were provided inside the both ends of the non-stretching area | region Fb, it is not restricted to this. For example, when it is desired to further prevent the deformation of the absorbent main body 10 on the ventral side and the dorsal side, both ends of all the pressing portions E may be provided outside the both ends of the non-stretchable regions Ff and Fb. When it is desired to further improve the touch on the ventral side and the back side, both ends of all the pressing portions E may be provided inside the both ends of the non-stretchable regions Ff and Fb. Further, both ends in the left-right direction of the pressing portion E provided in the overlapping region 11Pf of the front core portion 11Af are provided inside the both ends of the non-stretchable region Ff and are provided in the overlapping region 11Pb of the rear core portion 11Ab Both ends in the left-right direction of the may be provided outside the both ends of the non-stretchable region Fb. By doing this, on the ventral side, since the abdomen of the baby's body is pushed forward, the absorbent core 11A contracted by the contraction of the ventral torso elastic member 23 overlaps the pressing portion E. It is possible to reduce the fear that the absorbent main body 10 becomes hard and the touch is reduced. On the other hand, on the back side, the absorbent core 11A can be easily maintained in a planar shape in the left-right direction by providing a long compressed portion in the left-right direction, so that the absorbent core can be made easy to adhere to the skin. it can.

Furthermore, as in the diaper 1, as shown in FIG. 8, the length in the left-right direction of the pressing portion E provided in the overlapping region 11Pf of the front core portion 11Af is the length in the left-right direction of the pressing portion E provided in the overlapping region 11Pb Length of the pressing portion E provided in the overlapping region 11Pf is provided outside the both ends of the non-stretchable region Ff, and the left-right direction of the pressing portion E provided in the overlapping region 11Pb of the rear core portion 11Ab It is more preferable to provide both ends of the inner side with respect to both ends of the non-stretchable region Fb. Since the infant is often in a posture in which the leg is brought forward, the front core portion 11Af of the absorbent main body 10 which is easily deformed by the movement of the leg has a higher rigidity in the left-right direction. Makes it easy to maintain On the other hand, the rear side core portion 11Ab with less deformation of the absorbent main body 10 is made to be easy to follow the wearer's body by making the rigidity in the left-right direction not too high, and the touch is improved.

In the above-described embodiment, the ventral waistline portion 20 and the back waistline portion 30 respectively have the non-stretchable regions Ff and Fb, but the non-stretchable regions Ff and Fb may not necessarily be necessarily provided. When the ventral waistline portion 20 and the back waistline portion 30 do not have the non-stretchable regions Ff, Fb, the absorbent main body 10 absorbs the stretching force of the belly waist stretchable member 23 and the back waist stretchable member 33, and By the pressing part E provided in the sex core 11A, it can be made to be easy to make it close to the body of the infant.

In the above-mentioned embodiment, although pressing parts E were arranged at equal intervals in the up-and-down direction, it is not restricted to this. The pressing portions E may be arranged at unequal intervals. For example, FIG. 12 is a schematic plan view of the unfolded and stretched diaper 1 according to another embodiment as viewed from the skin side. As shown in FIG. 12, of the plurality of pressing portions Ey and Ez provided in the overlapping area 11Pf, the lower lower waist pressing portion Ey positioned adjacent to the lower waist pressing portion Ey from the upper side is an adjacent waist adjacent to the upper waist. Among the plurality of pressing portions Ea, Eb, Ec, and Ed provided in the non-overlapping region 11Qf, the distance Dyz to the lower pressing portion Ez is the lower pressing portion Ea located at the lowermost side, and the lower pressing portion Ea. The distance Dab between the upper side and the adjacent lower side pressing portion Eb adjacent to the upper side may be larger (Dyz> Dab). Further, among the plurality of pressing portions Ea, Eb, Ec, Ed provided in the non-overlapping area 11Qf, an upper pressing portion Ec positioned at the uppermost side, and an adjacent upper pressing portion Ed adjacent from the lower side to the upper pressing portion Ec The interval Dab between the lower-side pressing part Ea located on the lowermost side and the adjacent lower-side pressing part Eb adjacent to the lower-side pressing part Ea from the upper side is smaller than the interval Dcd of (Dab <Dcd).

In this way, rigidity is further improved by providing more compressed portions E in the non-overlapping region 11Qf where deformation of the absorbent core 11A is more likely to occur, and the planar shape of the absorbent core 11A is maintained. It can be easy to do. By providing the compressed portion E smaller in the overlapping region 11Pf where deformation of the absorbent core 11A is less, the touch of the absorbent main body 10 can be further improved. Further, in the non-overlapping region 11Qf, more pressing parts E are provided in the lower region closer to the leg opening LH to increase the rigidity in the left-right direction of the absorbent main body 11A, and the absorbent core It is possible to reduce the deformation of 11A. On the other hand, in the upper region far from the leg opening LH, by making the pressing portion E smaller, the hardening of the absorbent main body 11A is reduced to reduce the feel of the absorbent main body 10 It can be improved.

In the above-mentioned embodiment, although two or more pressing parts E of the depth of all the same grooves were formed in absorptive core 11A, it is not restricted to this. In the absorbent core 11A, pressing parts E of different depths may be formed. For example, a pressing portion E of a deeper groove is formed in the lower region of the front core portion A where it is desired to increase the rigidity in the left and right direction in the front core portion 11Af, and a portion near the ventral waistline portion 20 is formed. And the shallow groove compression part E may be formed.

Furthermore, in this embodiment, although it was set as absorptive core 11A provided with the narrowest part 11n in front side core part 11Af, it is not restricted to this. For example, the absorbent core 11A may be provided with the narrowest portion 11n at the lower portion of the diaper 1, and may be provided in a region continuing from the front core portion 11Af to the rear core portion 11Ab. Moreover, the rectangular absorptive core 11A which does not have narrow part 11fn and 11bn may be sufficient.

In the above-mentioned embodiment, although a pant type absorptive article was explained as a so-called three piece type disposable diaper which has belly side waist part 20, back side waist part 30, and absorptive main part 10, it is not restricted to this. For example, the exterior sheet 14 may be a diaper (a so-called two-piece type) in which the ventral waistline portion 20 and the back waistline 30 are connected to be integrated.

In the embodiment described above, the elastic rubber (23, 33, 51, 16) provided on the belly-side waist portion 20, the back-side waist portion 30, the leak-barrier wall 50, and the leg gathers portion 60 is elastic rubber Although illustrated, it does not restrict to this. For example, not only a rubber thread or an elastic nonwoven fabric, but one or more sheet-like elastic members such as an elastic film may be provided. Moreover, only the site | part (site | part of what is called an effective length) which expresses extensibility among an expansion-contraction member is shown by drawing. Therefore, a portion of the stretchable member that does not express stretchability may exist outside the longitudinal direction of the stretchable member illustrated. Further, the arrangement and the number of the expansion and contraction members are not limited to the illustrated configuration.

1 diapers (pants-type disposable diapers, pants-type absorbent articles),
10 Absorbent body,
11 absorbers,
11A absorbent core, 11B core wrap sheet,
11Af front core, 11Ab rear core,
11fu upper part, 11fn front narrow part (narrow part),
11bu upper part, 11bn rear side narrow part (narrow part), 11n narrowest part,
11Pf overlap area, 11Pb overlap area,
11 Q f non overlapping area, 11 Q b non overlapping area,
12 top sheets, 13 back sheets,
14 exterior sheet, 15 leak-proof wall member, 16 leg elastic members,
20 ventral waist, 20a side,
21 skin side sheets, 22 non skin side sheets,
23 ventral side waist elastic member (a waist elastic member), 23a thread rubber, 23b elastic sheet,
30 back waist, 30a side,
31 skin side sheets, 32 non skin side sheets,
33 back waist elastic member (waist elastic member),
50 leak-barrier wall, 51 leak-barrier elastic member,
52 end joints, 53 side joints,
55 fixed parts, 56 upright parts,
60 leg gather sections,
LH leg opening, BH trunk opening,
Df stretchable area, Db non-stretchable area,
Ff stretchable area, Db non-stretchable area,
E squeeze department,
Ea lower compression unit, Eb adjacent lower compression unit,
Ec upper pressing section, Ed adjacent upper pressing section,
Es end pressing section, Et long pressing section,
Ey waist lower pressing part, Ez adjacent waist lower pressing part,
L non-stretching area,
S slit (through hole),
U non-pressing department

Claims

Vertical direction, horizontal direction, and longitudinal direction,
A pant-type absorbent article comprising an absorbent core, a ventral waist and a dorsal waist,
The absorbent core has at least one pressing portion having a predetermined length in the left-right direction in an overlapping region overlapping in the front-rear direction with at least one of the ventral-side waist portion or the back-side waist portion. A pants-type absorbent article characterized in that.
In the pants-type absorbent article according to claim 1,
The sum total of the said horizontal direction length of all the said pressing parts provided in the said overlap area | region is larger than the sum of the length of the said up-down direction, The pants type absorbent article characterized by the above-mentioned.
The pants-type absorbent article according to claim 1 or 2
The ventral waistline portion and the back waistline portion respectively have waist stretchable members that extend and contract in the left-right direction,
The ventral waistline portion and the back waistline portion each have a stretch area that stretches with the waist stretch member and a non-stretch area that does not stretch.
At least one said pressing part overlaps with said non-stretching area in the front-back direction, The pants type absorbent article characterized by the above-mentioned.
In the pants-type absorbent article according to claim 3,
The center in the left and right direction of the pressing portion is the center in the left and right direction of the absorbent core,
The non-stretchable region is provided at the center in the left-right direction of the ventral-side waist portion,
Both ends of the said horizontal direction of the said pressing part are each provided outside the both ends of the said horizontal direction of the said non-stretching area | region, The pants type absorbent article characterized by the above-mentioned.
In the pants-type absorbent article according to claim 3,
The center in the left and right direction of the pressing portion is the center in the left and right direction of the absorbent core,
The non-stretchable region is provided at a center portion in the left-right direction of the ventral-side waist portion and the back-side waist portion.
The pants-type absorbent article is characterized in that both ends in the lateral direction of the squeezing portion are respectively provided inside the ends in the lateral direction of the non-stretchable region.
In the pants-type absorbent article according to claim 3,
The center in the left and right direction of the pressing portion is the center in the left and right direction of the absorbent core,
The non-stretchable region is provided at the center in the left-right direction of the ventral waistline portion or the back waistline portion.
At least one of the ventral waist portion or the back waist portion
A long squeezing portion in which both ends in the left and right direction of the squeezing portion are respectively provided outside the both ends in the left and right direction of the non-stretchable region;
The shorts-type absorbent article characterized in that the both ends of the said horizontal direction of the said pressing part are provided with the short pressing part respectively provided inside the both ends of the said horizontal direction of the said non-stretching area | region.
In the pants-type absorbent article according to claim 3,
The ventral waistline and the back waistline each have the squeezed portion,
The center in the left and right direction of the pressing portion is the center in the left and right direction of the absorbent core,
The non-stretchable region is provided at a center portion in the left-right direction of the ventral-side waist portion and the back-side waist portion.
Both left and right ends of the squeezed portion of the ventral-side waist part are respectively provided outside the both ends of the non-stretchable region in the left-right direction,
Both ends of the said horizontal direction of the said pressing part of the said back side waist part are each provided inside the both ends of the said horizontal direction of the said non-stretching area | region, The pants type absorbent article characterized by the above-mentioned.
In the pants-type absorbent article according to claim 3,
The ventral waistline and the back waistline each have the squeezed portion,
The center in the left and right direction of the pressing portion is the center in the left and right direction of the absorbent core,
The non-stretchable region is provided at a center portion in the left-right direction of the ventral-side waist portion and the back-side waist portion.
Both ends in the left-right direction of the compressed portion of the ventral-side waist part are respectively provided inside the ends in the left-right direction of the non-stretchable region,
Both ends of the said horizontal direction of the said pressing part of the said back side waist part are each provided outside the both ends of the said horizontal direction of the said non-stretching area | region, The pants type absorbent article characterized by the above-mentioned.
The pants-type absorbent article according to any one of claims 1 to 8,
The ventral waistline portion and the back waistline portion respectively have waist stretchable members that extend and contract in the left-right direction,
A pant-type absorbent article, wherein at least one of the waist elastic members overlaps the pressing portion in the front-rear direction.
The pants-type absorbent article according to any one of claims 1 to 9.
The absorbent core has a through hole penetrating in the front-rear direction,
The pant-type absorbent article, wherein the compressed portion and the through hole overlap in the vertical direction.
The pants-type absorbent article according to any one of claims 1 to 10.
A plurality of said pressing parts are arrange | positioned at equal intervals in the said up-down direction, The pants type absorbent article characterized by the above-mentioned.
The pants-type absorbent article according to any one of claims 1 to 11.
The absorbent core is folded in half and has a front core portion located on the front side and a rear core portion located on the rear side,
The front core portion has a narrow portion whose length in the left-right direction is shorter than that of the upper portion,
At least a portion of the narrow portion is provided above the lower end of the ventral waistline portion,
The pant-type absorbent article, wherein the compressed portion is provided in the narrow portion.
The pants-type absorbent article according to any one of claims 1 to 11.
A plurality of the squeezing parts are provided in the overlapping area and a non-overlapping area which does not overlap the absorbent core and the ventral waist part in the front-rear direction;
The absorbent core is folded in half and has a front core portion located on the front side and a rear core portion located on the rear side,
Among a plurality of the pressing portions provided in the overlapping region, a distance between the lowermost lower pressing portion located on the lower side and the adjacent lower pressing portion adjacent to the upper lower pressing portion from the upper side is
Among a plurality of the pressing parts provided in the non-overlap area, it is larger than a distance between a lower pressing part located on the lowermost side and an adjacent lower pressing part adjacent to the lower pressing part from above. Pants type absorbent article characterized by the above.
The pants-type absorbent article according to claim 13
The distance between the lower pressing portion and the adjacent lower pressing portion is
Among a plurality of the pressing portions provided in the non-overlap area, the distance between the upper pressing portion located at the uppermost side and the adjacent upper pressing portion adjacent to the upper pressing portion from the lower side is smaller. Pants type absorbent article.