JP2018000568A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article which can achieve both of liquid absorption effect by an absorber and a deodorization effect by a deodorant.SOLUTION: An absorbent article 100 comprises: a liquid permeable surface sheet 120; a liquid impermeable rear surface sheet 130; and an absorber 140 provided between the surface sheet and the rear surface sheet, and has a longitudinal direction, a width direction and a thickness direction which are orthogonal to each other. The absorbent article 100 comprises, in plane view, an urination area PA1 and a peripheral area PA2 for surrounding the urination area, and comprises an auxiliary sheet 144 which exists between the absorber and the surface sheet and contains a deodorant. The auxiliary sheet does not exist in the urination area, and exists in the peripheral area.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorbent article.

  Absorbent articles such as incontinence pads and disposable diapers are used to absorb and retain excreta excreted from the wearer, such as urine. The urine absorbed by the absorbent body of the absorbent article usually gives off an unpleasant odor. Therefore, an absorbent article having a deodorizing function for suppressing the odor has been studied.

  For example, in the absorbent article described in Patent Document 1, the deodorizing layer is disposed between the top sheet and the absorbent body so as to cover substantially the entire skin side of the absorbent body in plan view. Further, in the absorbent article described in Patent Document 2, the deodorant is almost entirely on the surface layer of the napkin, the excretion region or edge, or the elastic upright barrier, the side panel or the crotch of the disposable diaper in a plan view. It is attached on the surface layer on the back side.

JP 2011-030900 A JP 2007-528742 A

  In the absorbent article, in order to maximize the deodorizing effect by the deodorant, the deodorant is disposed in a region in contact with the urination part of the wearer when the wearer wears the product, that is, in the urination region. It is preferable. On the other hand, however, when the deodorant gets wet with urine (liquid), the deodorizing effect is significantly reduced for the following reasons. That is, in the case of a deodorant that performs deodorization by physical adsorption, when the deodorant gets wet with the liquid, the pores are filled with the liquid, and it is difficult for the odorous substance (gas) to reach the pores, and due to chemical adsorption. In the case of a deodorant that performs deodorization, when the deodorant gets wet with the liquid, the surface is covered with a liquid layer, and it is difficult for the odorous substance (gas) to come into contact with the surface.

  In the absorbent article of Patent Document 1, the deodorant is disposed on almost the entire surface of the absorbent body in a plan view, and is therefore also disposed in the urination region, so it can be considered that the deodorant effect by the deodorant is high. . However, in this case, since the deodorant in the urination region gets wet with urine, the deodorant effect by the deodorant is considered to be low. In addition, since the deodorant is present in the path of movement of the urine to the absorber, it is considered that the urine is prevented from moving to the absorber and the absorption effect of the absorber is reduced. In addition, urine diffusion in a continuous deodorant layer of deodorant is considered easier than diffusion of urine to other layers and materials. It is considered that urine easily diffuses to the area around the urination area in the odor layer, and the deodorant in the surrounding area is also easily wetted with urine, leading to a further decrease in the deodorizing effect.

  On the other hand, in the absorbent article of Patent Document 2, it can be considered that the deodorizing effect of the deodorant is high when the deodorant is disposed on almost the entire surface or the excretion region on the surface layer of the napkin in a plan view. However, also in this case, the deodorant in the urination area gets wet with urine, and the deodorant in the surrounding area also spreads through the surface layer and becomes easy to get wet with urine. The deodorizing effect of the agent is reduced, and if the concentration is increased in order to increase the deodorizing effect, the urine flow itself becomes obstructed, and as a result, the deodorant in the urination area moves to the urine absorber. It is considered that the absorption effect of the absorber is reduced. In addition, when the deodorant is disposed on the edge on the surface layer of the napkin, on the elastic upright barrier of the disposable diaper, on the side panel, or on the surface layer from the crotch to the back, the deodorant is not urine. It is not easy to get wet, and it is not difficult to move urine to the absorber. However, since these are regions in contact with the skin surface of the wearer, the deodorant is wetted by sweat from the skin surface of the wearer, and the deodorizing effect of the deodorant is considered to be low.

  The objective of this invention is providing the absorbent article which can make the absorption effect by an absorber and the deodorizing effect by a deodorizer compatible.

  The absorbent article of the present invention includes (1) a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body positioned between the top sheet and the back sheet, and are orthogonal to each other. An absorbent article having a longitudinal direction, a width direction, and a thickness direction, and having a urination region PA1 and a surrounding region surrounding the urination region PA1 in a plan view, the absorbent body and the topsheet An absorbent article that includes an auxiliary sheet that includes a deodorant and that is not present in the urination area PA1 but is present in the surrounding area.

  In the present absorbent article, the auxiliary sheet containing the deodorant is placed closer to the absorbent body containing the urine that generates odors, in a position between the absorbent body and the surface sheet and relatively close to the urination point. Arranged and not arranged in the urination area PA1 closest to the urination point. Therefore, when urine is excreted, the urine mainly spreads in the range of the urine area PA1, but is moved and diffused in the thickness direction, that is, inside the absorber without being disturbed by the deodorant of the auxiliary sheet. The Thereby, the deodorizer of an auxiliary sheet can prevent the movement to the absorber of urine, and the situation which reduces the absorption effect of an absorber can be suppressed. At the same time, the deodorant in the peripheral area of the auxiliary sheet can be prevented from getting wet with urine. In the present absorbent article, since the auxiliary sheet containing the deodorant is arranged on the non-skin side of the top sheet, sweat from the skin surface of the wearer becomes difficult to reach the auxiliary sheet, and the deodorant is caused by the sweat. The situation where the agent gets wet and the deodorizing effect of the deodorant is reduced can be suppressed. Thereby, odorous substances in the gas phase can be easily captured with a deodorant. As described above, in the present absorbent article, both the absorption effect by the absorbent body and the deodorization effect by the deodorant can be achieved.

In the absorbent article of the present invention, (2) the absorbent body has a minimum portion having a minimum dimension in the width direction at a central portion in the longitudinal direction, and the auxiliary sheet has the minimum portion in the width direction. The absorbent article according to (1) above, which is located on the outer side in the width direction with respect to an imaginary line extending along the longitudinal direction through the both end edges.
Even if urine diffuses, it hardly reaches the region outside in the width direction from the minimum portion of the absorber, and thus the region outside the minimum portion of the absorber becomes a region that hardly contacts the urine. For example, in the case of urine of about 150-300 ml, the diffusion moves in the thickness direction before spreading to the outer region in the width direction from the minimum portion, and diffuses in the absorbent body. Hardly reached. In the present absorbent article, the auxiliary sheet is disposed on the outer side in the width direction than the position of the minimum portion in the width direction. For this reason, deodorants are very close to the point of urination, but urine diffuses in the absorbent body, so it hardly comes into contact with urine and becomes difficult to get wet. Substances can be properly captured with deodorants.

The absorbent article of the present invention is (3) at the position of the fold line extending along the longitudinal direction, which is set at both ends in the width direction of the absorbent article at the time of packaging. Both end portions in the width direction are folded on the center portion, the fold line is set to pass through a predetermined position outside each end edge of the urination region in the width direction, and the auxiliary sheet is The absorbent article according to (1) may be located outside the fold line in the width direction in the width direction.
The absorbent article is packaged, and the portion outside the fold line in the width direction is folded along the fold line on the central portion inside the fold line. At that time, a partial fold groove of a fold line is formed on the skin surface side of the absorbent article. In the present absorbent article, a fold groove is provided on the skin surface side in this way, so that the outer portion in the width direction of the fold groove rises in the thickness direction and becomes like a wall. A substantially U-shaped shape can be maintained when viewed from the longitudinal direction. As a result, even if urine flows to the outside in the width direction, since the portion outside the width direction is inclined with respect to the fold groove, the flowing urine is prevented from further spreading to the outside in the width direction. it can. Furthermore, since the outer portion in the width direction from the fold groove is like a wall, when the odorous substance generated from the urine tries to spread outward in the width direction, it follows the portion like the wall. Since it moves, it can make it easy to contact a deodorant. Thus, this absorbent article does not get wet with the deodorant, that is, does not reduce the deodorizing effect of the deodorant, and can properly capture urine odor substances with the deodorant.

The absorbent article of this invention is (4) The said surface sheet is extended along the said longitudinal direction, and the center sheet located in the center of the said width direction is extended along the said longitudinal direction, The said center A pair of side sheets that are positioned on both outer sides in the width direction of the sheet and that constitute a pair of leak-proof walls, and the auxiliary sheet is joined to the center sheet and the pair of side sheets in plan view The absorbent article according to any one of (1) to (3), wherein the absorbent article is positioned on both outer sides in the width direction with respect to the inner ends in the width direction of the pair of joining portions. Also good.
In the posture where the wearer is lying sideways, urine is likely to travel on the top sheet. In the present absorbent article, the auxiliary sheet is disposed outside the position of the fixed end of the leak-proof wall in the width direction. Therefore, a deodorant is arranged outside the fixed end where the transmission of urine stops when the wearer is sleeping sideways. Therefore, the deodorant is very close to urine, but hardly comes into contact with urine and becomes difficult to wet. Therefore, the odor substance of urine can be appropriately captured by the deodorant without reducing the deodorant effect of the deodorant.

The absorbent article of the present invention is (5) the auxiliary sheet according to any one of (1) to (4), wherein the auxiliary sheet extends outward from both end edges of the absorbent body in the width direction. It may be an absorbent article.
Even if urine diffuses in the width direction, it hardly reaches the area outside the both end edges of the absorber, and thus the area outside the both end edges of the absorber becomes an area that hardly contacts the urine. In the present absorbent article, the auxiliary sheet is formed so as to extend outside the both end edges of the absorbent body in the width direction, that is, in a wide region extending outside the both end edges of the absorbent body. Therefore, the deodorant is relatively close to the urination point, but hardly touches the urine, is difficult to get wet, and the deodorant area is widened. Can be properly captured with deodorant.

In the absorbent article of the present invention, (6) one of the longitudinal directions is a ventral direction, the other is a dorsal direction, and the auxiliary sheet is at least more ventral than the urination region in plan view. The absorbent article according to any one of (1) to (5) above, which is located in
In the absorbent article, the end portion in the width direction of the crotch part is attached in close contact with the body so as not to leak, and the degree of adhesion is very high. Therefore, the odorous substance that escapes from the urination area is limited to the ventral side. In particular, when the wearer is lying on his back, the urine odor substance easily passes between the absorbent article and the abdomen of the body. In the present absorbent article, the auxiliary sheet is disposed on the ventral side of the urination region, so that the odorous substance passing between the absorbent article and the abdomen of the body can be effectively captured. Moreover, even if urine is discharged in a posture where the wearer is lying on his back, urine cannot resist gravity except for the capillary phenomenon in the pulp fiber of the absorber. Therefore, by arranging the deodorant in the ventral direction from the urination region, the deodorant is close to the urination point, but hardly comes into contact with urine and becomes difficult to get wet. Therefore, the deodorizing effect of the deodorant can be exhibited accurately without reducing the deodorizing effect of the deodorant, and in particular, the odor felt by the wearer sleeping on his back can be effectively removed.

The absorbent article of this invention is (7) The said absorber has the minimum part in which the dimension of the said width direction becomes the minimum in each of the both ends of the said longitudinal direction, The said auxiliary sheet is more than the said minimum part. The absorbent article according to any one of (1) to (6) above, which is located outside the longitudinal direction.
Even if the urine is diffused, it hardly reaches the region outside in the longitudinal direction from the minimal portion of the absorber, and therefore, the region outside the minimal portion of the absorber becomes a region hardly contacting the urine. In the present absorbent article, the auxiliary sheet is arranged on the outer side in the longitudinal direction than the position of the minimal part in the width direction. Therefore, the deodorant is very close to the point of urination, but it hardly touches the urine and becomes difficult to wet. Therefore, the odor substance of urine is properly captured with the deodorant without reducing the deodorant effect of the deodorant it can.

In the absorbent article of the present invention, (8) the auxiliary sheet is positioned outside both end edges of the absorbent body in the width direction, and the back sheet in the thickness direction outside the absorbent body in the width direction. And the absorbent article according to (1) above, which is located between the top sheet and the top sheet.
Even if urine diffuses in the width direction, it hardly reaches the region outside the both end edges of the absorber, and therefore, the region outside the both end edges of the absorber becomes a region hardly contacting with urine. In the present absorbent article, the auxiliary sheet is formed so as to be located outside the both end edges of the absorbent body in the width direction. Therefore, the deodorant is relatively close to the point of urination, but it hardly touches the urine and becomes difficult to wet. Therefore, the odor substance in the urine is properly captured by the deodorant without reducing the deodorant effect of the deodorant. it can.

(9) The absorbent article according to the present invention includes (9) the absorbent body including a groove formed in the urination area PA1 and extending in the thickness direction from the top sheet side to the inside of the absorbent body. The absorbent article as described in any one of 8) may be sufficient.
In the present absorbent article, a groove portion extending into the absorbent body is formed in the urination region PA1 of the absorbent body. Therefore, when urine is excreted in the urination area PA1 on the top sheet, before the urine spreads through the top sheet to the surrounding area and wets the deodorant, the majority of the urine is grooved in the absorber. Can be moved and diffused into the absorber. Therefore, the urine can be efficiently absorbed by the absorber while suppressing the movement and diffusion of the urine to the deodorant in the surrounding area and suppressing the deodorizing effect of the deodorant. Thereby, the absorption effect by an absorber and the deodorizing effect by a deodorizer can be made compatible.

The absorbent article of this invention is (10) The said groove part is formed in the center part of the said width direction in the said urination area | region PA1, extends in the said longitudinal direction, and has the through-hole which penetrates the said absorber in the said thickness direction. The absorbent article according to (9) above may be included.
In the present absorbent article, a through-hole is formed in the urination region PA1, extends in the longitudinal direction, and penetrates into the absorber in the thickness direction, so that the urine excreted in the urination region PA1 spreads to the deodorant in the surrounding region. Before, most of it can be quickly moved and diffused into the absorber. Thereby, the deodorizing effect of a deodorizer can be maintained.

In the absorbent article of the present invention, (11) one of the longitudinal directions is a ventral direction, the other is a dorsal side direction, and the ventral end of the through hole in the ventral direction and the absorber. The distance from the ventral end is shorter than the distance between the dorsal end of the groove and the dorsal end of the absorber, and the wall of the ventral end is The angle formed with respect to the bottom surface in the groove part is the absorbent article according to (10), wherein a wall surface of the back side end portion is closer to a perpendicular than an angle formed with respect to the bottom surface in the groove part. Also good.
Since the wall surface of the ventral end is closer to the end of the absorber than the wall of the dorsal end, urine leaking from the ventral end is relatively likely to arrive at the end of the absorber. In the present absorbent article, the wall surface at the ventral end is nearer to the vertical than the wall at the back end and is steeper than the wall at the back end. Therefore, urine can be made difficult to leak from the ventral end toward the end of the absorbent article. This makes it easier to draw urine into the absorber through the through hole. As a result, the absorption effect can be enhanced by effectively using the absorber. Further, even when urine leaks from the through hole, it is more likely that the urine leaks to the back side than the abdomen side.

In the absorbent article of the present invention, (12) one of the longitudinal directions is a ventral direction, the other is a dorsal side direction, the width direction end of the through hole in the width direction, and the absorber. The distance from the end in the width direction is the distance between the ventral end in the ventral direction of the through-hole and the end in the ventral direction of the absorber, and the dorsal direction of the through-hole. The angle formed by the wall surface of the width direction end portion with respect to the bottom surface in the through hole is shorter than the distance between the back side end portion and the end portion in the back side direction of the absorber. In the above (10) or (11), the angle formed by the wall surface with respect to the bottom surface in the through hole and the angle formed by the wall surface of the back side end portion with respect to the bottom surface in the through hole are perpendicular to each other. The absorbent article described may be used.
The wall surface at the end in the width direction is closer to the end of the absorber than the wall at the abdominal end and the wall at the back end, so that urine leaking from the end in the width direction is relative to the end of the absorber. Easy to arrive. In the present absorbent article, the wall surface at the end in the width direction is closer to the perpendicular to the bottom surface in the through-hole than the wall surface at the ventral end and the wall at the back end, and is steeper. Therefore, urine can be made difficult to leak from the end portion in the width direction toward the end portion of the absorber. Urine can be drawn more into the interior of the absorber. Thereby, the absorber can be used closer to its capacity limit without leaking urine. On the other hand, in this absorbent article, the wall surface of the ventral end and the wall surface of the dorsal end are made gentler than the bottom surface in the through hole. Therefore, urine excreted in the urination area PA1 can be easily drawn.

The absorbent article of the present invention includes (13) the absorber includes an upper layer absorber positioned on the skin side and a lower layer absorber positioned on the non-skin side, and the groove portion is formed in the urination region PA1. The absorbent article according to (9) above, including a through-hole formed in a center portion in the width direction, extending in the longitudinal direction, and penetrating the upper-layer absorber in the thickness direction.
In the present absorbent article, the groove has at least an upper layer through-hole penetrating the upper layer absorbent body. Therefore, when urine is excreted in the urination area PA1 on the top sheet, most of the urine is removed before the urine spreads to the surrounding area on the skin side surface of the upper layer absorbent and wets the deodorant. It can be moved to the inside of the lower layer absorber through the upper layer through hole. Therefore, urine can be prevented from moving to the deodorant in the surrounding area. At the same time, even when urine that has moved inside the lower layer absorber is about to move to the skin side, the upper layer absorber is arranged on the skin side of the lower layer absorber. Can be suppressed by the upper absorber. Accordingly, the deodorizing effect of the deodorant can be maintained while maintaining the absorption effect of the absorber.

  ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which can make the absorption effect by an absorber compatible with the deodorizing effect by a deodorizer can be provided.

It is a top view of an absorptive article concerning an embodiment. It is a disassembled perspective view of the principal part of the absorbent article shown in FIG. It is III-III sectional drawing of FIG. It is IV-IV sectional drawing of FIG. It is a schematic diagram which shows an example of the arrangement | positioning area | region of the deodorizer of the absorbent article of FIG. It is a schematic diagram which shows an example of the arrangement | positioning area | region of the deodorizer of the absorbent article of FIG. It is a schematic diagram which shows an example of the arrangement | positioning area | region of the deodorizer of the absorbent article of FIG. It is a schematic diagram which shows an example of the arrangement | positioning area | region of the deodorizer of the absorbent article of FIG. It is a schematic diagram which shows an example of the arrangement | positioning area | region of the deodorizer of the absorbent article of FIG. It is a schematic diagram which shows an example of the arrangement | positioning area | region of the deodorizer of the absorbent article of FIG. It is a schematic diagram which shows an example of the arrangement | positioning area | region of the deodorizer of the absorbent article shown in FIG. It is a schematic diagram explaining the longitudinal direction shape of the groove part of the absorbent article shown in FIG. It is a schematic diagram explaining the width direction shape of the groove part of the absorbent article shown in FIG.

  Hereinafter, the absorbent article which concerns on embodiment is demonstrated with reference to drawings. In the present embodiment, a light incontinence pad will be described as an example of an absorbent article. Therefore, in this Embodiment, the excrement which is the absorption object of an absorbent article is urine. However, the type and use of the absorbent article of the present invention are not particularly limited, and can be applied to absorbent articles such as panty liners, sanitary napkins, and disposable diapers (tape type, pant type).

  1-4 has shown the structure of the absorbent article 100 (urine collection pad) which concerns on this Embodiment. 1 is a plan view of the absorbent article 100 viewed from the skin side, FIG. 2 is an exploded perspective view of the main part of the absorbent article 100, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. The absorbent article 100 has a longitudinal direction L, a width direction W, and a thickness direction T, passes through the center of the width direction W, extends in the longitudinal direction L, and a crotch portion (described later) in the longitudinal direction L. It further has a central axis CW that passes through the center and extends in the width direction W. The directions toward and away from the central axis CL are the inside and outside directions of the width direction W, respectively, and the directions toward and away from the center axis CW are the inside and outside directions of the longitudinal direction L. In FIG. 1, the upper side is the front side or the abdomen side in the longitudinal direction L, and the lower side is the rear side or the back side in the longitudinal direction L. Further, in this specification, viewing the absorbent article 100 in the thickness direction from the upper surface side or the lower surface side is simply referred to as “plan view”. “Skin side” and “non-skin side” refer to a side closer to and far from the skin surface of the wearer in the thickness direction T when the wearer of the absorbent article 100 wears the absorbent article 100. Each means.

  As shown in FIGS. 1 and 2, the absorbent article 100 has an abdomen portion 111, a crotch portion 112, and a dorsal side portion 113 arranged along the longitudinal direction L, and the longitudinal direction of the crotch portion 112 in plan view. The approximate center in the direction L is constricted in the width direction W, and the approximate center in the longitudinal direction L of the ventral portion 111 and the dorsal side portion 113 has a ridge shape that swells in the width direction W. When the absorbent article 100 is worn, the abdomen 111 is applied to the wearer's abdomen, the crotch 112 is applied to the wearer's crotch, and the back 113 is the wearer's buttocks and / or back. To. However, the boundary between the ventral part 111 and the dorsal part 113 and the crotch part 112 is set as follows, for example. Consider one side in the width direction W of the central axis CL. On the basis of the minimum distance from the central axis CL in the width direction W in the crotch portion 112, a straight line along the longitudinal direction L passing through a position away from the central axis CL by a distance of 120% to 140% of the minimum distance is absorbed. A position that intersects the outline of the property article 1 is set as a boundary. In the absorbent article 100, for example, the dimension in the longitudinal direction L is 350 to 880 mm, and the dimension in the width direction W is 160 to 460 mm.

  Of the absorbent article 100, a region in contact with the urination part of the wearer (or a region where urine is excreted from the wearer) is defined as a urination region PA1. The urination area PA1 can be appropriately set according to the gender / generation of the wearer and the type of the absorbent article. For example, in the width direction W, the crotch portion 112 is roughly divided into three substantially as the urination area PA1. This is the central range, and in the longitudinal direction L, it can be said that it is almost the entire range of the crotch portion 112. The shape of the urination area PA1 may be an arbitrary shape such as a rectangle, a polygon, or an ellipse, but in the present embodiment, the shape is a rectangle. The area | region except the urination area | region PA1 of the absorbent article 100, ie, the area | region around the urination area | region PA1, is made into surrounding area | region PA2. In the urination region PA1, for example, the dimension in the longitudinal direction L is 50 to 200 mm and the dimension in the width direction W is 30 to 80 mm corresponding to the dimension of the absorbent article 100.

  The absorbent article 100 includes a top sheet 120, an auxiliary sheet 144, an absorber 140, and a back sheet 130. In addition, the longitudinal direction L, the width direction W, the thickness direction T, the skin side, and the non-skin side of the absorbent article 100 coincide with the top sheet 120, the auxiliary sheet 144, the absorber 140, and the back sheet 130. Therefore, also in the top sheet 120, the auxiliary sheet 144, the absorber 140, and the back sheet 130, the longitudinal direction L, the width direction W, the thickness direction T, the skin side, and the non-skin side are used similarly to the absorbent article 100.

  The top sheet 120 is a liquid-permeable sheet positioned on the skin side in the thickness direction T, and includes a center sheet 122 and a pair of side sheets 121 in the present embodiment. The center sheet 122 is a liquid-permeable sheet that extends along the longitudinal direction L and is located at the center in the width direction. The center sheet 122 has a rectangular shape in the present embodiment, but may have the same bowl shape as the absorbent article 100. Examples of the central sheet 122 include any liquid-permeable sheet such as a liquid-permeable nonwoven fabric or woven fabric, a synthetic resin film in which liquid-permeable holes are formed, and a composite sheet thereof. The pair of side sheets 121 is a hydrophobic sheet that extends along the longitudinal direction L, is located on both sides of the central sheet 122 in the width direction W, and constitutes the pair of leakage prevention walls 160. The pair of side sheets 121 are shaped on both side portions of the absorbent article 100 in the width direction W of the ridge shape (example: about ３ portion on one end side in the width direction of the ridge shape and １ ／ portion on the other end side. ). Examples of the side sheet 121 include any hydrophobic sheet such as a hydrophobic nonwoven fabric or a synthetic resin film, or a composite sheet of a nonwoven fabric and a synthetic resin film.

  The auxiliary sheet 144 is a liquid-permeable sheet that exists on the non-skin side of the top sheet 120 in the thickness direction T, that is, between the absorber 140 and the top sheet 120, and removes the odor of excrement. Contains agents. It is possible to prevent the deodorant from getting wet with sweat by being on the non-skin side of the top sheet 120 and not touching the skin directly. The auxiliary sheet 144 has a substantially rectangular shape in the present embodiment. However, a hole 145 having a predetermined shape is formed at a position corresponding to the urination area PA1 of the auxiliary sheet 144 so as to overlap the urination area PA1 or to include the urination area PA1, and the excrement is transferred from the skin side to the non-skin side. It is easy to penetrate to. Here, the shape of the auxiliary sheet 144 is arbitrary as long as the hole 145 is formed, and there may be various variations as described later. In addition, the hole 145 has a predetermined shape such as a rectangle, a polygon, or an ellipse, but in the present embodiment, the hole 145 has a rectangular shape and overlaps the urination region PA1. Examples of the sheet containing a deodorant include a mixed paper made using natural fibers such as pulp, synthetic fibers such as polyethylene, and a deodorant. As the deodorant, a known material can be used, and examples thereof include activated carbon, zeolite, silica gel, alumina, and porous glass.

The thickness, basis weight, and the like of the auxiliary sheet 144 are appropriately adjusted in consideration of the deodorizing function of the auxiliary sheet 144 and the like. For example, from the viewpoint of retaining a sufficient amount of deodorant, the lower limit of the thickness of the auxiliary sheet 144 is preferably 0.1 mm, more preferably 0.2 mm, and still more preferably 0.4 mm. In light of ease of handling such as the softness of the absorbent article 100, the upper limit of the thickness of the auxiliary sheet 144 is preferably 10 mm, more preferably 5 mm, and even more preferably 1 mm. From the viewpoint of sufficiently exerting the deodorizing function, the lower limit of the basis weight of the auxiliary sheet 144 is preferably 1 g / m ² , more preferably 10 g / m ² , and further preferably 20 g / m ^2. preferable. From the viewpoint of ease of handling such as the mass and softness of the absorbent article 100, the upper limit of the basis weight of the auxiliary sheet 144 is preferably 80 g / m ² , more preferably 60 g / m ² , and 50 g / m ^2. it is more preferably m ^2. The measurement of the thickness of the auxiliary sheet 144 is, for example, a 100 mm × 100 mm auxiliary sheet sample cut out from the auxiliary sheet of the absorbent article, a commercially available thickness measuring device (example: JA257 manufactured by PEACOCK, measurement surface 50 mm (diameter), Using a measuring pressure of 3 g / cm ² ). Using a thickness meter, pressurize five different parts of the auxiliary sheet material at a constant pressure of 3 g / cm ² , measure the thickness of each part 10 seconds after pressurization, and calculate the average of the five measured values as thickness (mm) And The basis weight of the auxiliary sheet 144 is measured as follows, for example. The mass of three test pieces (10 mm × 10 mm) cut out from the auxiliary sheet of the absorbent article was measured with a direct balance (example: Electronic balance HF-300 manufactured by Kensei Kogyo Co., Ltd.), and three test pieces The mass (g / m ² ) per unit area of the auxiliary sheet calculated from the average value of the mass of the auxiliary sheet is defined as the basis weight of the auxiliary sheet.

  In the present embodiment, it is assumed that the auxiliary sheet 144 exists between the absorber 140 and the top sheet 120. In terms of the relationship between the auxiliary sheet 144 and the absorber 140, the auxiliary sheet 144 is in the thickness direction. It means that it is arranged on the skin side with respect to the absorber 140 at T. This is because the auxiliary sheet 144 is brought closer to the skin side than the absorber 140 that absorbs urine and becomes a source of odor. Here, in the edge part of the absorbent article 100, disposing the auxiliary sheet 144 between the top sheet 120 and the back sheet 130 in the region where the absorber 140 does not exist is more than the absorber 140 in the thickness direction T. Since it can be said that it arrange | positions to the skin side, in this Embodiment, it considers arrange | positioning between the absorber 140 and the surface sheet 120. FIG.

  The absorber 140 is a member having liquid absorbability and liquid retainability located between the top sheet 120 and the back sheet 130 in the thickness direction T and on the non-skin side of the auxiliary sheet 144. In the present embodiment, the absorber 140 includes an upper layer sheet 140c positioned on the skin side, an upper layer absorber 140a positioned on the non-skin side of the upper layer sheet 140c, and a lower layer absorption positioned on the non-skin side of the upper layer absorber 140a. Body 140b. However, the lower layer absorbent body 140b may be formed of an absorbent core and a covering sheet that wraps the absorbent core. In plan view, the upper layer sheet 140c is approximately the same size as the upper layer absorber 140a, and the upper layer absorber 140a is slightly larger than the lower layer absorber 140b. Examples of the material of the upper layer absorber 140a and the lower layer absorber 140b include pulp fibers, synthetic fibers, and polymer absorbers. Examples of the material for the upper layer sheet 140c and the covering sheet include a nonwoven fabric and a tissue. The upper layer sheet 140c may be omitted. The absorber 140 may not be two layers like the upper layer absorber 140a and the lower layer absorber 140b, and may be three layers or more.

The thickness, basis weight, and the like of the upper layer absorber 140a and the lower layer absorber 140b are appropriately adjusted in consideration of the liquid absorption performance of the absorber 140 and the like. For example, the thickness of the upper layer absorbent body 140a is usually 1.5 to 5.0 mm, preferably 2.5 to 3.5 mm, and the basis weight is usually 150 to 400 g / m ² , preferably 200 to 300 g / m ² . is there. The thickness of the lower layer absorber 140b is usually 1.5 to 5.0 mm, preferably 2.5 to 3.5 mm, and the basis weight is usually 150 to 400 g / m ² , preferably 200 to 300 g / m ² . . The thickness of the absorber is measured by, for example, a 100 mm × 100 mm absorber sample cut out from an absorbent article, a commercially available thickness measuring instrument (example: PE257 manufactured by PEACOCK, measurement surface 50 mm (diameter), measurement pressure 3 g / cm ² ) and as follows. Using a thickness meter, pressurize five different parts of the absorber sample at a constant pressure of 3 g / cm ² , measure the thickness of each part 10 seconds after pressurization, and calculate the average of the five measured values as thickness (mm) And The measurement of the basic weight of an absorber is performed as follows, for example. The mass of three test pieces (10 mm × 10 mm) cut out from the absorber was measured with a direct weighing scale (example: electronic balance HF-300 manufactured by Kensei Kogyo Co., Ltd.), and the average mass of the three test pieces The mass (g / m ² ) per unit area of the absorber calculated from the value is defined as the basis weight of the absorber.

  The back sheet 130 is a liquid-impermeable sheet located on the non-skin side in the thickness direction T. Examples of the back sheet 130 include liquid-impermeable sheets such as liquid-impermeable nonwoven fabrics and synthetic resin films, composite sheets of nonwoven fabrics and synthetic resin films, and SMS nonwoven fabrics.

  In the present embodiment, the absorbent article 100 further includes a pair of leak-proof walls 160 and 160 and an exterior sheet 170. The pair of leak-proof walls 160 and 160 are portions inside the width direction W of the pair of side sheets 121 of the top sheet 120 and extend in the longitudinal direction L. The outer edge of the leak-proof wall 160 in the width direction W is a fixed end 160a fixed to the top sheet 120, and the inner edge is a free end. The fixed end 160a is also an end portion of a joint portion where the center sheet 122 and the side sheet 121 are joined. The pair of leak-proof walls 160 and 160 have elastic members (not shown) extending along the longitudinal direction L at their free ends, respectively, and thereby stand up to the skin side when worn. The exterior sheet 170 is a liquid-impermeable sheet located on the non-skin side of the back sheet 130 (not shown in FIGS. 1 and 2). There is no restriction | limiting in particular in the material of the exterior sheet | seat 170, For example, the material of the back surface sheet 130 is mentioned.

A predetermined pattern is formed between the top sheet 120 and the auxiliary sheet 144, between the auxiliary sheet 144 and the absorber 140, between the absorber 140 and the back sheet 130, and between the back sheet 130 and the exterior sheet 170. Are bonded by an adhesive (not shown). The center sheet 122 and the side sheet 121 are joined to each other by a predetermined pattern (not shown). The upper layer sheet 140c and the upper layer absorber 140a, and the upper layer absorber 140a and the lower layer absorber 140b are bonded to each other by an adhesive (not shown) having a predetermined pattern. The top sheet 120 and the back sheet 130 are bonded to each other at their peripheral portions by a predetermined pattern of adhesive (not shown). The top sheet 120 and the exterior sheet 170 are joined to each other at their peripheral portions by a predetermined pattern of adhesive (not shown). The basis weight (g / m ² ) of the adhesive is appropriately adjusted in consideration of materials and performance. The basis weight is, for example, 0.5 to 50 g / m ² , preferably 1 to 20 g / m ² . The basis weight of the adhesive is obtained by dividing the application amount (mass) of the adhesive applied to the material (surface sheet 120, back sheet 130, absorber 140, etc.) having a predetermined area in the absorbent article 100 by the predetermined area. Is calculated.

  In the present embodiment, the upper layer absorbent body 140a has a substantially bowl-like shape that is long in the longitudinal direction L and narrowed at the approximate center in the longitudinal direction L of the crotch portion 112 in plan view. The lower layer absorber 140b has a substantially rectangular shape that is long in the longitudinal direction L and short in the width direction W in plan view. However, in the lower layer absorber 140b, the dimension in the longitudinal direction L is shorter than the dimension in the longitudinal direction L of the upper layer absorber 140a, and the dimension in the width direction W is shorter than the dimension in the width direction W of the upper layer absorber 140a. Therefore, both end edges in the longitudinal direction L of the upper layer absorbent body 140a are located outside the both end edges in the longitudinal direction L of the lower layer absorbent body 140b in the longitudinal direction L. Therefore, the upper layer absorbent body 140a is more than the lower layer absorbent body 140b. Widely formed on both sides in the longitudinal direction L. Further, both end edges in the width direction W of the upper layer absorbent body 140a are located outside the both end edges in the width direction W of the lower layer absorbent body 140b in the longitudinal direction L. Therefore, the upper layer absorbent body 140a is more than the lower layer absorbent body 140b. Is also widely formed on both sides in the width direction W. That is, the upper layer absorber 140a is formed to be slightly larger than the lower layer absorber 140b. Further, the upper layer sheet 140c has a long longitudinal direction L and a short width dimension W in plan view. However, the dimension in the longitudinal direction L of the upper layer sheet 140c is the same as the dimension in the longitudinal direction L of the upper layer absorbent body 140a, and the dimension in the width direction W is longer than the dimension of the crotch portion 112 in the width direction W of the upper layer absorbent body 140a. It is a substantially rectangular shape that is shorter than the dimensions of the ventral side portion 111 and the back side portion 113. Note that the shape of each component of the absorber 140 in plan view is arbitrary.

  In this embodiment, the auxiliary sheet 144 has a substantially rectangular shape that is slightly larger than the upper layer sheet 140c of the absorber 140 in plan view, and thereby covers substantially the entire skin side of the absorber 140. . On the other hand, the hole portion 145 of the urination area PA1 of the auxiliary sheet 144 has substantially the same size as the urination area PA1, so that the auxiliary sheet 144, that is, the deodorant does not exist in the urination area PA1. Therefore, the deodorant is located in the peripheral area PA2 that is closer to the absorber 140 containing the urine in which odor is generated, between the absorber 140 and the top sheet 120 and relatively close to the urination point, It is not located in the urination area PA1 closest to the urination point. Therefore, when urine is excreted, the urine moves mainly into the urination area PA1 and passes through the hole 145 in the auxiliary sheet 144, that is, without being disturbed by the deodorant, and moves into the absorber 140. Can diffuse and be absorbed Thereby, the situation where the deodorizer of the auxiliary sheet 144 prevents the urine from moving to the absorber 140 and reduces the absorption effect of the absorber 140 can be suppressed. At the same time, it is possible to suppress the deodorant in the peripheral area PA2 of the auxiliary sheet 144 from getting wet with urine, thereby suppressing the situation where the deodorant gets wet with urine and the deodorizing effect is lowered. At that time, since the auxiliary sheet 144 containing the deodorant is disposed on the non-skin side of the top sheet 120, sweat from the skin surface of the wearer becomes difficult to reach the auxiliary sheet 144, and deodorized by sweat The situation where the agent gets wet and the deodorizing effect of the deodorant is reduced can be suppressed. Thereby, odorous substances in the gas phase can be easily captured with the deodorant. As described above, the absorbent article 100 can achieve both the absorption effect by the absorber 140 and the deodorization effect by the deodorant.

  In the absorber 140, as shown in FIG.2 and FIG.3, the upper layer absorber 140a has a groove part recessed in the thickness direction T from the skin side toward the non-skin side. The groove portion is a through-hole 141a that penetrates the upper-layer absorber 140a in the thickness direction T in the present embodiment. The through hole 141 a is located in the crotch portion 112 of the absorbent article 100 and extends in the longitudinal direction L through the center in the width direction W of the absorbent body 140. That is, the through hole 141a is formed in the urination area PA1. Thereby, before the excreted urine diffuses on the surface sheet 120 to the surrounding area PA2, that is, before the deodorant of the auxiliary sheet 144 is soiled, the urine is removed from the lower layer absorber 140b through the through-hole 141a. Can be pulled inside. In particular, in the present embodiment, since the groove portion is the through hole 141a, urine can be drawn into the lower layer absorber 140b more quickly. Moreover, since the upper layer absorbent body 140a is slightly larger than the lower layer absorbent body 140b, the upper layer absorbent body 140a prevents the urine from being drawn into the lower layer absorbent body 140b and returning to the skin side. We can suppress getting wet from the skin side.

  In the present embodiment, the through-hole 141a is a through-hole, and the lower layer absorber 140b has a groove that is recessed in the thickness direction T from the skin side toward the non-skin side. The groove portion is a through-hole 141b that penetrates the lower layer absorber 140b in the thickness direction T in the present embodiment. The through-hole 141 b is located in the crotch portion 112 of the absorbent article 100 and extends in the longitudinal direction L through the center in the width direction W of the absorbent body 140. That is, the through hole 141b is formed in the urination area PA1. Moreover, the through-hole 141a and the through-hole 141b are formed so that at least one part may overlap by planar view. Thereby, when the excreted urine reaches the lower layer absorber 140b through the through hole 141a of the upper layer absorber 140a, the urine can be further drawn into the lower layer absorber 140b through the through hole 141b. . In particular, in the present embodiment, since the groove portion is the through hole 141b, urine can be drawn more quickly into the lower layer absorber 140b. By drawing urine into the lower layer absorber 140b and sucking urine with the lower layer absorber 140b, liquid return to the upper layer absorber 140a can be prevented, and a smooth feeling can be maintained, that is, rewet back can be reduced and auxiliary It is possible to suppress the sheet 144 from getting wet from the non-skin side.

  The dimensions in the longitudinal direction L and the width direction W in plan view of the through holes 141a and the through holes 141b are appropriately adjusted in consideration of the sizes and the like of the upper layer absorber 140a and the lower layer absorber 140b. The dimension of the through-hole 141a in the width direction W is usually 5.0 to 50 mm, preferably 10 to 20 mm. The dimension of the through hole 141b in the width direction W is equal to or smaller than the dimension of the through hole 141a in the width direction W, and is usually 5.0 to 40 mm, preferably 10 to 15 mm. The dimension of the through-hole 141a in the longitudinal direction L is usually 50 to 300 mm, preferably 50 to 200 mm, and more preferably 50 to 150 mm. The length of the through hole 141b is equal to or shorter than the dimension in the longitudinal direction L of the through hole 141a, and is usually 30 to 250 mm, preferably 30 to 150 mm. The dimensions in the width direction W and the longitudinal direction L of the through hole 141a are equal to or larger than the dimensions in the width direction W and the longitudinal direction L of the through hole 141b, so that the upper layer absorber 140a and the lower layer absorber 140b. Even if some deviation occurs in the step of laminating the through holes 141, the size of the through holes 141 viewed from the surface of the absorber 140 on the surface sheet 120 side is kept substantially constant. Further, a step is generated on the inner wall surface of the through hole 141 and the inner surface area of the through hole 141 is increased, so that the urine absorption performance of the absorbent body 140 in the portion where the through hole 141 is formed is improved.

  In the present embodiment, a groove (or a through hole 141a and a through hole 141a) extending to the inside of the absorber 140 is formed in the urination area PA1 of the absorber 140. Therefore, when urine is excreted in the urination area PA1 on the top sheet 120, the urine spreads through the top sheet 120 to the surrounding area PA2 and wets the deodorant on the auxiliary sheet 144 before the urine is wetted. Most of the above can be moved and diffused from the groove of the absorber 140 into the absorber 140. Therefore, the urine can be efficiently absorbed by the absorber 140 while suppressing the movement and diffusion of the urine to the deodorant in the surrounding area PA2, and suppressing the deodorizing effect of the deodorant. Thereby, the absorption effect by an absorber and the deodorizing effect by a deodorizer can be made compatible.

  The absorber 140 further has pressing parts 142 and 143. The pressing parts 142 and 143 extend along the longitudinal direction L on both outer sides in the width direction W of the through hole 141 in the urination region PA <b> 1 of the crotch part 112. The pressing parts 142 and 143 are formed by pressing the upper layer absorber 140a and the lower layer absorber 140b in the thickness direction T. That is, the pressing parts 142 and 143 are recessed parts that are formed by embossing and have an opening on the top sheet 120 side. When the urine is excreted in the urination area PA1 on the top sheet 120, the pressing parts 142 and 143 can suppress the top sheet 120 from spreading in the width direction W and reaching the surrounding area PA2. And before the deodorant on the auxiliary sheet 144 on both sides in the width direction W of the urination region PA1 gets wet with urine, most of the urine can be moved and diffused from the squeezing parts 142 and 143 into the absorber 140.

  Said through-hole 141 and pressing part 142,143 are provided in order to draw urine into the absorber 140, in order to prevent that urine moves outward on the surface sheet 120, and leaks outside. Can be seen. Therefore, it can be said that the urination area PA1 of the present embodiment is an area including the through hole 141 and the pressing parts 142 and 143. For example, the length in the longitudinal direction L of the urination region PA1 includes a dimension obtained by extending the dimension in the longitudinal direction L of the through hole 141 by about 10% to 30% on the front side and the rear side. Examples of the length in the width direction W of the urination region PA1 include a dimension in which the dimension in the width direction W from the pressing part 142 to the pressing part 143 is extended by about 10% to 30% on both outer sides.

  The shape of the auxiliary sheet 144 of the absorbent article 100, that is, the arrangement region of the deodorant is not limited to the example of FIGS. 1 to 4 and is arbitrary as long as the hole 145 is provided, and there may be various variations. Hereinafter, examples of variations in the shape of the auxiliary sheet (deodorant placement region) will be described with reference to FIGS. However, in FIGS. 5 to 11, the auxiliary sheets 144 and 144 a to 144 e that are on the non-skin side of the top sheet 120 (hidden under the top sheet 120) are filled with a solid line figure and the figure for easy understanding. This is indicated by hatching lines.

  FIG. 5 is a schematic diagram illustrating an example of a deodorant arrangement region (a shape of the auxiliary sheet 144) of the absorbent article 100. In this example, the auxiliary sheet 144 is present in the entire area excluding the urination area PA1 in plan view. In other words, the deodorant is disposed in the entire area excluding the urination area PA1 in plan view. In this case, since the amount of the deodorant is extremely large, the deodorizing effect becomes extremely high.

  FIG. 6 is a schematic diagram illustrating another example of the arrangement region of the deodorant (the shape of the auxiliary sheet 144a) of the absorbent article 100. The absorber 140 (a combination of the upper-layer absorber 140a and the lower-layer absorber 140b) has a central portion in the longitudinal direction L, that is, a crotch portion 112 having a minimum portion 140as1 that minimizes the dimension in the width direction W. . In this example, the auxiliary sheet 144a is located outside the imaginary line MW extending along the longitudinal direction L through the both end edges of the minimum portion 140as1 in the width direction W. Even if urine is diffused, the region outside the minimum portion 140as1 of the absorber 140 hardly reaches the region outside in the width direction W, and therefore the region outside the minimum portion 140as1 of the absorber 140 is a region hardly contacting with urine. . For example, in the case of urine of about 150 to 300 ml, the odorant moves in the thickness direction T before diffusion spreads to the region outside the width direction W from the minimum portion 140as1, and diffuses in the absorbent body 140. Almost no area is reached in the surrounding area PA2. Therefore, in this example, the auxiliary sheet 144a is disposed outside the position of the minimum portion 140as1 (outside the virtual line MW). Therefore, the deodorant is very close to the point of urination, but since the urine diffuses in the absorber 140, it hardly comes into contact with the urine and becomes difficult to get wet. The odorous substance can be properly captured with a deodorant. Note that, depending on the shape of the absorber 140 (upper layer absorber 140a, lower layer absorber 140b), the minimum portion where the dimension in the width direction W is minimum may be different from the case of FIG. Further, as the minimum portion, a portion where the dimension in the width direction W of the upper layer absorber 140a is minimized may be selected, or a portion where the dimension in the width direction W of the lower layer absorber 140b is minimized may be selected. .

  FIG. 7 is a schematic diagram showing still another example of the deodorant arrangement region (the shape of the auxiliary sheet 144b) of the absorbent article 100. At the time of packaging, the absorbent article 100 is set at both ends in the width direction W of the absorbent article 100, and the both ends in the width direction W are folded at the center at the position of the fold line FL extending along the longitudinal direction L. ing. The fold line FL is set so as to pass through a predetermined position outside the both end edges of the urination region PA1 in the width direction W, preferably outside the both end edges of the minimum portion 140as1. In this example, the auxiliary sheet 144b is located outside the folding line FL in the width direction W in the width direction W. The absorbent article 1 is packaged, and a portion outside the fold line FL in the width direction W is folded along a fold line FL on a central portion inside the fold line FL. At that time, a folding groove is formed in the portion of the folding line FL. Thus, by attaching a fold groove on the skin surface side, a portion outside the fold groove in the width direction W stands up in the thickness direction T to be like a wall, and the absorbent article 1 as a whole in the longitudinal direction A substantially U-shaped shape as viewed from L can be maintained. As a result, even if urine flows outside in the width direction W, the urine that has flowed further spreads outward in the width direction W because the outer portion in the width direction W is inclined with respect to the folding groove. This can be suppressed. Furthermore, since the outer portion in the width direction W from the folding groove is like a wall, when the odorous substance generated from urine tries to spread outside the width direction W, the portion like the wall Since it moves along, it can make it easy to contact a deodorant. Thus, this absorbent article 100 does not get wet with the deodorant, that is, does not reduce the deodorizing effect of the deodorant, and can properly capture the urine odor substance with the deodorant.

  FIG. 8 is a schematic diagram illustrating still another example of the deodorant arrangement region (the shape of the auxiliary sheet 144b) of the absorbent article 100. In this example, the auxiliary sheet 144b is wider in width than the inner ends (fixed ends 160a) in the width direction W of the pair of joint portions where the center sheet 122 and the pair of side sheets 121 are joined in plan view. Located on both outer sides in the direction W. In the posture in which the wearer is sleeping sideways, urine is likely to travel on the top sheet 120. Therefore, in this example, the auxiliary sheet 144b is arranged outside the position of the inner end portion in the width direction W at the joint portion, that is, the position of the fixed end 160a of the leak-proof wall 160. The reason is as follows. Since the side sheet 121 is formed of a hydrophobic sheet (eg, hydrophobic nonwoven fabric), when a liquid such as urine is transmitted to the side sheet 121, the side sheet is located on the outer side in the width direction W from the vicinity of the fixed end 160a. Even if the liquid is placed on 121, the side sheet 121 does not suck the liquid. Therefore, if the deodorant is arranged outside the fixed end 160a, the possibility that the liquid flows from the skin surface side of the side sheet 121 in the thickness direction T is low. Thereby, the area | region where the deodorizer is arrange | positioned can be maintained in the environment which is hard to get wet. Therefore, the deodorant is disposed outside the fixed end 160a where the transmission of urine stops when the wearer is lying sideways. Therefore, the deodorant is very close to urine, but hardly comes into contact with urine and becomes difficult to wet, so the odor substance of urine should be properly captured with the deodorant without reducing the deodorant effect of the deodorant. Can do.

  FIG. 9 is a schematic view showing still another example of the deodorant arrangement region (the shape of the auxiliary sheet 144c) of the absorbent article 100. FIG. In this example, the auxiliary sheet 144c is positioned outside both end edges of the absorber 140 (a combination of the upper layer absorber 140a and the lower layer absorber 140b) in the width direction W, and further, both ends in the longitudinal direction L. It may be located outside the edge. Outside the absorber 140 in the width direction W and the longitudinal direction L, it is located between the back sheet 130 and the top sheet 120 in the thickness direction T. Even if urine diffuses in the width direction W and / or the longitudinal direction L, the region outside the edge of the absorber 140 hardly reaches the region, and therefore, the region outside the edge of the absorber 140 is separated from urine. It is an area that hardly touches. In this example, the auxiliary sheet 144c is formed so as to be located outside the edge of the absorber 140 in the width direction W and / or the longitudinal direction L. Therefore, although the deodorant is relatively close to the urination point, it hardly comes into contact with urine and becomes difficult to wet, so that the odor substance of urine can be appropriately captured by the deodorant without reducing the deodorizing effect of the deodorant.

  FIG. 10 is a schematic diagram illustrating still another example of the deodorant arrangement region (the shape of the auxiliary sheet 144d) of the absorbent article 100. In this example, the absorber 140 (a combination of the upper-layer absorber 140a and the lower-layer absorber 140b) has minimal portions 140as2 and 140as3 that have a minimum dimension in the width direction at both ends in the longitudinal direction L. The auxiliary sheet 144d is located outside the minimal portions 140as2 and 140as3 in the longitudinal direction L. Even if the urine is diffused, the regions outside the minimal portions 140as2 and 140as3 of the absorber 140 in the longitudinal direction L are hardly reached, so the regions outside the minimal portions 140as2 and 140as3 are regions that hardly contact with urine. . In this example, the auxiliary sheet 144d is disposed outside the positions of the minimal portions 1140as2 and 140as3 in the longitudinal direction L. Therefore, the deodorant is very close to the point of urination, but it hardly touches the urine and becomes difficult to get wet, so the odor substance of urine can be properly captured with the deodorant without reducing the deodorant effect of the deodorant. . In addition, you may arrange | position the auxiliary sheet | seat 144d in the outer side of the longitudinal direction L rather than any one of minimum part 140as2 and 140as3.

  FIG. 11 is a schematic diagram showing still another example of the deodorant arrangement region (the shape of the auxiliary sheet 144e) of the absorbent article 100. In this example, the auxiliary sheet 144e is positioned at least in the ventral direction (the direction of the ventral portion 111) from the urination area PA1 in plan view. The absorbent article 1 such as an absorbent pad and the end portion in the width direction W of the crotch part 112 are attached in close contact with the body so as not to leak, and the degree of adhesion is very high. For example, the absorbent pad is used in a state where a pants-type diaper or a tape-type diaper is attached to the non-skin side, and the degree of adhesion is extremely high. Therefore, the odorous substance that escapes from the urination area is limited to the ventral side. In particular, the urine odor substance easily passes between the absorbent article 100 and the abdomen of the body when the wearer is lying on his back. In this example, since the auxiliary sheet 144e is arranged in the ventral direction (the direction of the ventral part 111) from the urination area PA1, the odorous substance that passes between the absorbent article 100 and the abdominal part of the body is effectively captured. can do. Moreover, even if urine is discharged in a posture in which the wearer is lying on his / her back, urine cannot resist gravity except for the capillary phenomenon in the pulp fiber of the absorbent body 140. Therefore, by arranging the deodorant in the ventral direction from the urination area PA1, the deodorant is close to the urination point, but hardly comes into contact with the urine and becomes difficult to get wet. Therefore, the deodorizing effect of the deodorant can be exhibited accurately without reducing the deodorizing effect of the deodorant, and in particular, the odor felt by the wearer sleeping on his back can be effectively removed.

  Further, in FIGS. 1, 5 to 8, and FIGS. 10 to 11, each auxiliary sheet extends from the inner side to the outer side of the edge of the absorbent body 140 in the width direction W and / or the longitudinal direction L. By forming the auxiliary sheet in a wide area extending outside the outer edge of the absorber 140, the deodorant is relatively close to the point of urination, but hardly comes into contact with urine, hardly wets, and deodorant. Therefore, the deodorizing effect of the deodorant can be enhanced and the urine odor substance can be appropriately captured by the deodorant.

  6 to 11, each auxiliary sheet 144a to 144e has been described as having the shape of the illustrated region, but the present embodiment is not limited to this example. For example, the auxiliary sheet may be a sheet having a bowl shape that is the same as that of the absorbent article 100 in a plan view, and a sheet in which a deodorant is disposed only in a region indicated as the auxiliary sheets 144a to 144e in FIGS.

Next, the through hole 141 of the absorber 140 will be further described.
12 and 13 schematically show a cross-sectional view perpendicular to the width direction W along the longitudinal direction L and a cross-sectional view perpendicular to the longitudinal direction L along the width direction W with respect to the through-hole 141 of the absorber 140 and its peripheral portion. Is shown. In these drawings, the upper layer sheet 140c is not shown. Here, the through-hole 141a includes the wall surfaces SU1 and SU2 arranged facing the width direction W along the longitudinal direction L, and the front (abdominal side) wall surface FWU and the rear surface arranged facing the longitudinal direction L along the width direction W. Side (back side) wall surface BWU. Further, the through-hole 141b includes the wall surfaces SL1 and SL2 that are arranged facing the width direction W along the longitudinal direction L, and the front (abdominal side) wall surface FWL and the rear side that are arranged facing the longitudinal direction L along the width direction W. (Back side) wall surface BWL. However, in FIG. 12, the left side in the longitudinal direction L is the front side (abdominal side), and the right side is the rear side (back side). Further, when the through hole 141a is a through hole, the bottom surface BU of the through hole 141a is a plane obtained by virtually extending the non-skin side surface of the upper layer absorber 140a to the through hole. Similarly, when the through hole 141b is a through hole, the bottom surface BL of the through hole 141b is a plane obtained by virtually extending the non-skin side surface of the lower layer absorber 140b to the through hole. Therefore, the bottom surfaces BU and BL are parallel to each other.

  As can be seen from FIGS. 1 and 12, the distance between the lower ventral end LL1 which is the ventral end of the through hole 141b and the ventral end of the absorbent article 100 is the distance between the through hole 141b. It is shorter than the distance between the lower layer back side end part LL2 which is the end part in the back side direction and the end part in the back side direction of the absorbent article 100. Therefore, in the present embodiment, as shown in FIG. 12, the angle β1 formed by the wall surface FWL of the lower layer ventral end LL1 with respect to the bottom surface BL in the through hole 141b is penetrated by the wall surface BWL of the lower layer dorsal end LL2. The angle β2 formed with respect to the bottom surface BL in the hole 141b is nearer to the bottom surface BL, that is, more steep. Here, the urine leaking from the lower ventral end LL1 is relatively likely to arrive at the ventral end of the absorbent article 100 through the through-hole 141a. However, by having the said structure, it can make it hard to leak urine toward the edge part of the absorbent article 100 from the lower layer stomach side edge part LL1 through the through-hole 141a. Thereby, urine can be drawn further into the lower layer absorber 140b, and urine can be hardly leaked into the surrounding area PA2.

  Moreover, as can be seen from FIGS. 1 and 12, the distance between the upper-layer ventral end LU1 that is the ventral end of the through-hole 141a and the ventral end of the absorbent article 100 is the through-hole. 141a is shorter than the distance between the upper layer back side end portion LU2 which is the end portion in the back side direction and the end portion in the back side direction of the absorbent article 100. Therefore, in the present embodiment, as shown in FIG. 12, the angle α1 formed by the wall surface FWU of the upper layer ventral end portion LU1 with respect to the bottom surface BL in the through hole 141a is the wall surface BWU of the upper layer dorsal end portion LU2 is the through hole. The angle α2 formed with respect to the bottom surface BL in 141a is closer to the vertical with respect to the bottom surface BU and is steeper. Here, the urine leaking from the upper layer ventral end portion LU1 is relatively easy to arrive at the ventral end portion of the absorbent article 100. However, by having the above configuration, it is possible to make it difficult for urine to leak from the upper layer ventral end portion LU1 toward the ventral end portion of the absorbent article 100. Thereby, urine can be drawn further into the lower layer absorber 140b, and urine can be hardly leaked into the surrounding area PA2.

  In the present embodiment, as shown in FIGS. 12 and 13, the angles β1, β2, β3, β4 formed by the wall surfaces FWL, BWL, SL1, SL2 of the through hole 141b with respect to the bottom surface BL in the through hole 141b are: The wall surfaces FWU, BWU, SU1, SU2 of the through-hole 141a are closer to the bottom surface BU, BL than the angles α1, α2, α3, α4 formed with respect to the bottom surface BU in the through-hole 141a, and are steeper. . In other words, the wall surfaces FWU, BWU, SU1, and SU2 of the through hole 141a are made more gentle with respect to the bottom surfaces BL and BU in the through hole 141 than the wall surfaces FWL, BWL, SL1, and SL2 of the through hole 141b. Therefore, with the above configuration, since the wall surfaces FWU, BWU, SU1, and SU2 of the through hole 141a are gentle, it becomes easier to draw urine into the through hole 141b through the through hole 141a, and the wall surfaces FWL, Since BWL, SL1, and SL2 are steep, urine once drawn can be made difficult to leak outside. Accordingly, urine is drawn into the lower layer, and urine is sucked by the lower layer absorber 140b to prevent the liquid from returning to the upper layer absorber 140a, maintaining a light feeling (reducing rewet back), and the auxiliary sheet 144 being Wetting can be suppressed from the non-skin side, and urine can be made difficult to leak into the surrounding area PA2.

  As can be seen from FIG. 1, FIG. 12 and FIG. 13, the distance between one upper layer width direction end WU1 in the width direction W of the through-hole 141a and one end in the width direction W of the absorbent article 100, and The distance between the other upper layer width direction end portion WU2 in the width direction W of the through hole 141a and the other end portion in the width direction W of the absorbent article 100 is the upper layer belly side end portion LU1 in the ventral direction of the through hole 141a. Shorter than the distance between the end of the absorbent article 100 in the ventral direction and the distance between the upper back end LU2 in the back side direction of the through-hole 141a and the end in the back side of the absorbent article 100. . In the present embodiment, as shown in FIGS. 12 and 13, the angles α3 and α4 formed by the wall surfaces SU1 and SU2 of one and the other upper layer width direction end portions WU1 and WU2 with respect to the bottom surface BU in the through hole 141a are as follows. The angle α1 formed by the wall surface FWU of the upper layer ventral end portion LU1 with respect to the bottom surface BU in the through hole 141a, and the angle α2 formed by the wall surface BWU of the upper layer back side end portion LU2 with respect to the bottom surface BU within the through hole 141a. It is nearer to the bottom surface BU than the bottom BU, and is steep. By the said structure, urine can be made hard to leak toward the edge part of the absorbent article from upper part width direction edge part WU1, WU2. Thereby, urine can be drawn into the lower layer absorber 140b. As a result, rewet back can be reduced and urine can hardly be leaked to the surrounding area PA2. On the other hand, with the above configuration, the wall surface of the ventral side end portion and the wall surface of the back side end portion are made gentler than the bottom surface in the through hole from the upper layer ventral end portion LU1 and the upper layer dorsal end portion LU2. Therefore, urine excreted in the urination area PA1 can be easily drawn.

  However, the measurement methods for the angles α1 to α4 and β1 to β4 are performed as follows. X-ray fluoroscope FLEX-M863 was used. The sample is cut to 20 × 40 mm with the groove portion as the center, and the section sample is rotated by 0.2 degrees to scan 360 degrees. Thereafter, the captured 1800 images are connected to create a 3D image. Then, a cross-sectional view in the longitudinal direction L and a cross-sectional view in the width direction W were extracted from the 3D image, and the angles α1 to α4 and β1 to β4 were measured from the drawing. However, when the through-hole 141a is a through-hole, the bottom surface BU is a plane obtained by virtually extending the non-skin-side surface of the upper absorbent body 140a to the through-hole, and the bottom surface BL has a through-hole 141b through-hole. In this case, the non-skin side surface of the lower layer absorbent body 140b was a plane that was virtually extended to the through hole. Therefore, the bottom surfaces BU and BL are parallel to each other.

  ADVANTAGE OF THE INVENTION By this invention, the absorbent article which can make the absorption effect by an absorber compatible with the deodorizing effect by a deodorizer can be provided.

  The absorbent article of the present invention is not limited to the above-described embodiments, and can be appropriately combined and changed within a range not departing from the object and spirit of the present invention.

DESCRIPTION OF SYMBOLS 100 Absorbent article 120 Top sheet 130 Back sheet 140 Absorber 140a Upper layer absorber 140b Lower layer absorber 141a Through hole 144 Auxiliary sheet PA1 Urination area PA2 Surrounding area

Claims (13)

A liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body positioned between the top sheet and the back sheet, and having a longitudinal direction, a width direction, and a thickness direction perpendicular to each other An absorbent article,
In plan view, it has a urination region and a surrounding region surrounding the urination region,
Present between the absorber and the top sheet, comprising an auxiliary sheet containing a deodorant,
The auxiliary sheet is not present in the urination area, and is present in the surrounding area.
Absorbent article. The absorbent body has a minimum portion in which the dimension in the width direction is a minimum in the central portion in the longitudinal direction,
The auxiliary sheet passes through both end edges of the minimum portion in the width direction, and is located outside the imaginary line extending along the longitudinal direction in the width direction.
The absorbent article according to claim 1. At the time of packaging, the absorbent article is folded at a position of a fold line extending along the longitudinal direction at both ends in the width direction of the absorbent article. And
The fold line is set so as to pass through a predetermined position outside both end edges of the urination region in the width direction,
The auxiliary sheet is located outside the width direction with respect to the fold line in the width direction.
The absorbent article according to claim 1. The top sheet extends along the longitudinal direction and is located at the center in the width direction, and extends along the longitudinal direction and is positioned on both outer sides of the center sheet in the width direction. A pair of side sheets constituting a pair of leak-proof walls, and
The auxiliary sheet is located on both outer sides in the width direction with respect to inner ends in the width direction in a pair of joint portions where the center sheet and the pair of side sheets are joined in a plan view.
The absorbent article as described in any one of Claims 1 thru | or 3. The auxiliary sheet extends outward from both end edges of the absorber in the width direction.
The absorbent article as described in any one of Claims 1 thru | or 4. One of the longitudinal directions is the ventral direction, the other is the dorsal direction,
The auxiliary sheet is positioned in the ventral direction at least with respect to the urination region in plan view,
The absorbent article as described in any one of Claims 1 thru | or 5. The absorbent body has a minimal portion where the dimension in the width direction is minimal at each of both ends in the longitudinal direction,
The auxiliary sheet is located on the outer side in the longitudinal direction than the minimal portion,
The absorbent article as described in any one of Claims 1 thru | or 6. The auxiliary sheet is positioned outside both end edges of the absorber in the width direction,
The outer side of the absorbent body in the width direction is located between the back sheet and the top sheet in the thickness direction,
The absorbent article according to claim 1. The absorber includes a groove formed in the urination region and extending from the top sheet side to the inside of the absorber in the thickness direction.
The absorbent article as described in any one of Claims 1 thru | or 8. The groove portion is formed at a central portion in the width direction in the urination region, includes a through hole extending in the longitudinal direction and penetrating the absorber in the thickness direction.
The absorbent article according to claim 9. One of the longitudinal directions is the ventral direction, the other is the dorsal direction,
The distance between the ventral end of the through hole in the ventral direction and the end of the absorbent in the ventral direction is the back end of the groove in the dorsal direction and the dorsal side of the absorber. Shorter than the distance to the end of the direction,
The angle formed by the wall surface of the ventral end portion with respect to the bottom surface in the groove portion is closer to the vertical than the angle formed by the wall surface of the dorsal side end portion with respect to the bottom surface in the groove portion,
The absorbent article according to claim 10. One of the longitudinal directions is the ventral direction, the other is the dorsal direction,
The distance between the widthwise end of the through hole in the width direction and the widthwise end of the absorber is the distance between the ventral end of the through hole in the ventral direction and the ventral side of the absorber. Shorter than the distance between the end in the direction and the distance between the back end in the dorsal direction of the through hole and the end in the dorsal direction of the absorber,
The angle formed by the wall surface of the width direction end portion with respect to the bottom surface in the through hole is the angle formed by the wall surface of the ventral side end portion with respect to the bottom surface in the through hole, and the wall surface of the back side end portion. Is closer to the vertical than the angle formed with respect to the bottom surface in the through hole,
The absorbent article according to claim 10 or 11. The absorber includes an upper layer absorber positioned on the skin side and a lower layer absorber positioned on the non-skin side,
The groove portion is formed at a central portion in the width direction in the urination region, includes a through hole extending in the longitudinal direction and penetrating the upper layer absorber in the thickness direction.
The absorbent article according to claim 9.

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