JP2018086221A - Underpants type absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underpants type absorbent article of excellent wearability at low costs.SOLUTION: In an underpants type absorbent article (1), both side ends of an absorbent body (10) form a pair of openings around legs. An absorber (40) has: an absorbent core (41) having a narrow width part (41A) in a center part in a longitudinal direction; and a colored core wrap sheet (42) covering a skin side surface and a non-skin side surface of the absorbent core (41). The absorbent body (10) has: an inside area (10A) where the core wrap sheet (42) and the narrow width part (41A) exist; and an outside area (10B) where the core wrap sheet (42) exists but no absorbent core (41) exists outside in a horizontal direction of the inside area (10A). When the absorbent body (10) is seen from the skin side, in the outside area (10B), color difference with respect to white is larger than at least a part of the inside area (10A).SELECTED DRAWING: Figure 5

Description

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

  As a pants-type absorbent article, for example, Patent Document 1 discloses a pants-type diaper having an absorbent main body whose developed planar shape is a rectangular shape and an exterior sheet whose developed planar shape is a substantially hourglass shape. Yes. In the diaper of patent document 1, in order to distinguish the part which contacts a wearer's excretion opening | mouth in a surface sheet, and the part which is not so, it is the both sides of the transversal direction of an absorptive main body, a surface sheet, an absorber, A pair of colored members are provided between the two.

JP 2014-143

  However, in the diaper of patent document 1, the colored member is added only for identification of the contact part of the excretion opening, and it costs. Moreover, in the diaper of patent document 1, the exterior sheet | seat is a substantially hourglass shape, and the exterior sheet | seat protrudes on the outer side of the transversal direction rather than the absorptive main body. For this reason, when the diaper is worn, even if the absorbent main body is viewed from the waist opening and the legs are covered with a pair of colored members, the legs are easily caught on the exterior member, and the wearability is not good.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a pants-type absorbent article with good wearability at a low cost.

A main invention for achieving the above object is a pant-type absorbent article having a longitudinal direction, a lateral direction, and a thickness direction, and having a waistline opening and a pair of leg openings, And a pair of belts that are folded in the longitudinal direction, the longitudinal direction of which is along the longitudinal direction, and the longitudinal ends of the absorbent body that are respectively disposed along the longitudinal direction. And both end portions of the absorbent main body in the lateral direction form a part of the pair of leg-hole openings, and the absorber includes an absorbent core and a skin of the absorbent core. A colored core wrap sheet covering the side surface and the non-skin side surface, and the absorbent core has a narrow portion narrower than the end portion in the longitudinal direction at the central portion in the longitudinal direction, The absorbent main body includes the core wrap sheet and the narrow portion. An inner region that is present, and an outer region that is present outside the inner region in the lateral direction but has the core wrap sheet, but does not have the absorbent core, and the absorbent main body has the thickness. When viewed from the skin side in the direction, the pants-type absorbent article is characterized in that the outer region has a larger color difference with respect to white than at least a part of the inner region.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  According to the present invention, a pants-type absorbent article with good wearability can be provided at a low cost.

It is a schematic front view of the underpants type disposable diaper 1 of 1st Embodiment. It is the schematic plan view which looked at the diaper 1 of the expansion | deployment and expansion | extension state from the skin side. FIG. 3 is a schematic sectional view taken along line aa in FIG. 4A is a schematic cross-sectional view taken along line bb in FIG. 2, FIG. 4B is a schematic cross-sectional view taken along line cc in FIG. 2, FIG. 4C is a schematic cross-sectional view taken along line dd in FIG. It is a schematic sectional drawing of ee line. It is the schematic plan view which looked at a part of unfolded and extended diaper 1 from the skin side of the thickness direction. 6A is a schematic cross-sectional view of the diaper 1 cut along the line ee of FIG. 2, and FIG. 6B is a schematic cross-sectional view of a part of the diaper 1 cut in the vertical direction. 7A and 7B are diagrams illustrating the joint portion 42c of the core wrap sheet 42. FIG. It is the schematic plan view which looked at the diaper 1 of the expansion | deployment and expansion | extension state from the non-skin side of the thickness direction. It is a figure which shows the joining area | region 50 of the belt members 20 and 30 and the absorptive main body 10. FIG. It is a figure explaining the diaper 1 of 2nd Embodiment.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
A pants-type absorbent article having a longitudinal direction, a lateral direction, and a thickness direction, and having a waistline opening and a pair of leg openings, comprising an absorbent body and folded in half in the longitudinal direction The longitudinal direction of the absorbent main body, and a pair of belt members that are disposed at both ends of the absorbent main body in the longitudinal direction and extend along the lateral direction. Both side ends of the absorbent main body form a part of the pair of leg-hole openings, and the absorber includes an absorbent core and a colored core wrap that covers the skin side surface and the non-skin side surface of the absorbent core. A sheet, and the absorbent core has a narrow part narrower than an end part in the longitudinal direction at a center part in the longitudinal direction, and the absorbent main body includes the core wrap sheet and An inner region where the narrow portion is present, and the lateral direction Outside the inner region, the core wrap sheet exists, but the outer core does not exist, and when the absorbent main body is viewed from the skin side in the thickness direction, In the pants-type absorbent article, the outer region has a larger color difference with respect to white than at least a part of the inner region.

  According to such a pant-type absorbent article, when the absorbent main body is viewed from the waistline opening, the color of the outer region is conspicuous and serves as a mark of the position of the leghole opening, so that it is easy to pass the leg. In addition, since both side ends of the absorbent main body form part of the leg opening, it is difficult for the legs to be caught when passing through the legs while facing the outer region. Moreover, since the core wrap sheet | seat with which an absorbent article is generally provided is colored so that an outer area | region may be conspicuous, cost reduction can be achieved.

  Such a pant-type absorbent article, wherein the absorbent main body is adjacent to the outer region, the adjacent region where the core wrap sheet and the absorbent core are present, and the core in the lateral central portion. A wrap sheet that is overlapped on the skin side in the thickness direction than the absorbent core, and when the absorbent main body is viewed from the skin side in the thickness direction, The pants-type absorbent article is characterized in that the color difference with respect to white is larger than that in the adjacent region.

  According to such a pants-type absorbent article, when the absorbent main body is viewed from the waistline opening, the central region is conspicuous and serves as a mark for the position of the central portion in the lateral direction of the absorbent main body. Therefore, the center part (absorbent core) of the absorptive main body is easily aligned with the center position (excretion part) of the wearer, and the diaper is appropriately worn.

  In this pant-type absorbent article, the absorbent main body is aligned with the central region in the longitudinal direction, and the core wrap sheet is overlapped on the skin side in the thickness direction with respect to the absorbent core. The central region has a greater color difference with respect to white than the second central region when the absorbent main body is viewed from the skin side in the thickness direction. The pants-type absorbent article.

  According to such a pants-type absorbent article, when the absorbent main body is viewed from the waistline opening, the central region is conspicuous and serves as a mark for the position of the central portion in the lateral direction of the absorbent main body.

  Such a pant-type absorbent article, wherein the maximum width of the absorbent main body in the lateral direction and the maximum width of the absorbent core coincide with each other.

  According to such a pants-type absorbent article, since the outer region is interrupted at both longitudinal ends of the absorbent main body, when the absorbent main body is viewed from the waistline opening, the outer region is the longitudinal length of the absorbent main body. It becomes a mark of the position in the center of the direction. Therefore, the center part (absorbent core) in the longitudinal direction of the absorbent main body is easily aligned with the center position (excretion part) of the wearer, and the diaper is appropriately worn.

  In such a pant-type absorbent article, the absorbent main body has a pair of end regions where the core wrap sheet exists but the absorbent core does not exist at both ends in the longitudinal direction, and each of the ends. A pair of inner end regions in which the core wrap sheet and the absorbent core exist, and the absorbent main body is viewed from the skin side in the thickness direction. In addition, the end region is a pants-type absorbent article characterized in that the color difference with respect to white is larger than that of the inner end region.

  According to such a pants-type absorbent article, when the absorbent main body is viewed from the waistline opening, the end region is conspicuous and serves as a mark for the position of the longitudinal end of the absorbent core. Therefore, it can be confirmed whether the absorptive main body is pulled up firmly, and a diaper is attached appropriately.

  Such a pants-type absorbent article, wherein the pair of end regions have different lengths in the longitudinal direction.

  According to such a pants-type absorbent article, the front and back of the absorbent article can be identified based on the difference in the length of the end region, and the absorbent article can be prevented from being attached reversely.

  Such a pant-type absorbent article, wherein the belt member has a cover sheet on the skin side in the thickness direction than the absorbent main body, and the absorbent main body is provided at both ends in the longitudinal direction. A pants-type absorbent article having a pair of second end regions covered with a cover sheet, wherein the pair of second end regions have different lengths in the longitudinal direction.

  According to such a pants-type absorbent article, the front and rear of the absorbent article can be identified based on the difference in the length of the second end region, and the absorbent article can be prevented from being attached in the reverse direction.

  In this pant-type absorbent article, the belt member has an elastic member extending and contracting in the lateral direction between a plurality of sheets on the non-skin side in the thickness direction of the absorbent main body. The absorbent body has a pair of third end regions covered with the composite sheet at both ends in the longitudinal direction, and an intermediate region between the pair of third end regions. When the absorptive main body is viewed from the non-skin side in the thickness direction, the intermediate region has a larger color difference with respect to white than at least a part of the third end region. A pant-type absorbent article characterized by the above.

  According to such a pants-type absorbent article, when the absorbent article is viewed from the outside, the intermediate region is conspicuous and serves as a mark for the position of the lower end portion of the absorbent article. Therefore, it can be confirmed whether the absorptive main body is pulled up firmly, and a diaper is attached appropriately.

  In this pant-type absorbent article, the third end region includes a fourth end region where the core wrap sheet and the absorbent core are present, and an outer side in the longitudinal direction than the fourth end region. The core wrap sheet is present, but the absorbent core is not present, and a fifth end region, and when the absorbent main body is viewed from the non-skin side in the thickness direction, The pants-type absorbent article is characterized in that the color difference with respect to white is larger in the five end region than in the fourth end region.

  According to such a pants-type absorbent article, when the absorbent article is viewed from the outside, the fifth end region is conspicuous and serves as a mark of the position of the end in the longitudinal direction of the absorbent core. Therefore, it can be confirmed whether the absorptive main body is pulled up firmly, and a diaper is attached appropriately.

  Such a pant-type absorbent article, wherein the lower end portion of the composite sheet in the longitudinal direction is not joined to the absorbent main body.

  According to such a pants-type absorbent article, when the waist opening is widened for wearing, the lower end of the composite sheet is turned to the non-skin side so that the leg opening is widened and the leg can be easily passed. .

  Such a pants-type absorbent article, wherein the longitudinal change of the color difference with respect to white is different between when the absorbent main body is viewed from the skin side in the thickness direction and when viewed from the non-skin side. A pant-type absorbent article.

  According to such a pants-type absorbent article, the front and back sides of the absorbent article can be identified, and the absorbent article can be prevented from being attached reversely.

  Hereinafter, as an underpants type absorbent article according to the present invention, an embodiment will be described by taking an underpants type disposable diaper for adults as an example. However, the pants-type absorbent article according to the present invention is not limited to diapers for adults, and can be used as, for example, diapers for infants, shorts-type sanitary napkins, and the like.

=== First Embodiment ===
<Basic configuration of pants-type disposable diapers>
FIG. 1 is a schematic front view of a pants-type disposable diaper 1 (hereinafter referred to as “diaper”) of the first embodiment. FIG. 2 is a schematic plan view of the developed and extended diaper 1 as seen from the skin side. FIG. 3 is a schematic sectional view taken along line aa in FIG. 4A is a schematic cross-sectional view taken along line bb in FIG. 2, FIG. 4B is a schematic cross-sectional view taken along line cc in FIG. 2, FIG. 4C is a schematic cross-sectional view taken along line dd in FIG. It is a schematic sectional drawing of ee line.

  The diaper 1 has a longitudinal direction, a lateral direction, and a thickness direction in a pants-type state, and is formed with a waistline opening BH and a pair of leghole openings LH. In the vertical direction, the torso side of the wearer is the upper side, and the inseam side of the wearer is the lower side. The thickness direction is a direction in which the members constituting the diaper 1 are laminated as shown in FIGS. 3 and 4. In the thickness direction, the side in contact with the wearer is defined as “skin side”, and the opposite side is defined as “non-skin side”.

  The diaper 1 includes an absorbent main body 10 and a pair of belt members 20 and 30 which are three rectangular members. Of the pair of belt members 20, 30, the one covering the wearer's abdomen is referred to as the abdomen belt member 20, and the one covering the wearer's dorsal side is referred to as the dorsal belt member 30. In the unfolded state shown in FIG. 2, the abdomen belt member 20 and the back belt member 30 are arranged such that their longitudinal directions are along the lateral direction of the diaper 1. And the center part of the horizontal direction of the abdominal side belt member 20 is distribute | arranged to the edge part of the longitudinal direction of the absorptive main body 10, and the back side belt is located in the edge part of the other side of the absorptive body 10 in the longitudinal direction. A central portion in the lateral direction of the member 30 is disposed.

  In the diaper 1 in the unfolded state shown in FIG. 2, the absorbent main body 10 is folded in half at the approximate center in the longitudinal direction so that the longitudinal direction of the absorbent main body 10 is along the longitudinal direction of the diaper 1. The both sides in the lateral direction of the back belt member 30 are joined by welding or the like, whereby the diaper 1 in a pants-type state shown in FIG. 1 is obtained.

  As shown in FIG. 3, the absorbent main body 10 includes an absorbent body 40, a top sheet 11 disposed on the skin side in the thickness direction from the absorbent body 40, and a non-skin side in the thickness direction from the absorbent body 40. A back sheet 12 and an exterior sheet 13. The top sheet 11 is a liquid-permeable sheet, and examples thereof include a hydrophilic spunbond nonwoven fabric and a hydrophilic air-through nonwoven fabric. The back sheet 12 is a liquid-impermeable sheet, and examples thereof include a polyethylene film. Examples of the exterior sheet 13 include a hydrophobic SMS nonwoven fabric.

  The top sheet 11 and the back sheet 12 viewed in the thickness direction have the same planar shape and size as the absorbent main body 10 and cover both surfaces of the absorber 40. Moreover, as shown to FIG. 4C etc., the both sides of the horizontal direction of the top sheet 11 are wound back to the non-skin side around the absorber 40. As shown in FIG. Moreover, the both sides of the lateral direction of the exterior sheet 13 are folded twice toward the skin side. An elastic member 14 for a three-dimensional gathered portion such as rubber thread is fixed in a state of being stretched in the longitudinal direction between the exterior sheets 13 that are turned into two layers by the first folding. Part of the exterior sheet 13 is folded back to the skin side with respect to the top sheet 11 by the second folding, and a three-dimensional gather portion 15 that can stand on the skin side is formed.

  The absorber 40 has an absorbent core 41 that absorbs and holds excrement such as urine, and a colored core wrap sheet 42 that covers the skin side surface 41a and the non-skin side surface 41b of the absorbent core 41 in the thickness direction. (Details will be described later). The planar shape and size of the absorbent body 40 viewed in the thickness direction (that is, the planar shape and size of the core wrap sheet 42) are the same as those of the absorbent main body 10. Further, the planar shape of the absorbent core 41 as viewed in the thickness direction is a substantially hourglass shape in which the central portion in the longitudinal direction is bounded inward in the width direction. Examples of the absorbent core 41 include those in which liquid absorbent fibers such as pulp containing a super absorbent polymer (SAP) are formed into a predetermined shape. Examples of the core wrap sheet 42 include liquid permeable sheets such as tissue paper and nonwoven fabric.

  Moreover, the core wrap sheet | seat 42 of this embodiment has wrapped the absorptive core 41 as shown to FIG. 4C etc. Specifically, both lateral sides of the core wrap sheet 42 are folded back to the skin side of the absorbent core 41. The folded core wrap sheet 42 is overlaid at the lateral center of the absorbent core 41. A portion where the core wrap sheet 42 is overlapped is referred to as a joint portion 42c.

  As shown in FIG. 3, the abdominal belt member 20 and the back belt member 30 are respectively composite sheets 21 and 31 arranged on the non-skin side in the thickness direction from the absorbent main body 10, and the absorbent main body. 10 and cover sheets 22 and 32 arranged on the skin side in the thickness direction. In the composite sheets 21 and 31, a plurality of waistline elastic members 25 and 35 are interposed between the skin-side sheets 23 and 33 and the non-skin-side sheets 24 and 34. The plurality of waistline elastic members 25 and 35 are arranged side by side in the vertical direction between the skin side sheets 23 and 33 and the non-skin side sheets 24 and 34, and are fixed in a state of extending in the horizontal direction.

  The cover sheets 22 and 32 have a shorter length in the vertical direction than the skin side sheets 23 and 33 and the non-skin side sheets 24 and 34, and cover the longitudinal ends of the absorbent main body 10. By providing the cover sheets 22 and 32, it is possible to prevent the end of the absorbent main body 10 from opening in the longitudinal direction and the spillage of the members constituting the absorbent core 41. In addition, as a sheet | seat which comprises the abdominal side belt member 20 and the back side belt member 30, flexible sheets, such as a spun bond nonwoven fabric and a SMS nonwoven fabric, can be illustrated.

<Diaper 1 wearability>
FIG. 5 is a schematic plan view of a part of the developed and extended diaper 1 as seen from the skin side in the thickness direction. 6A is a schematic cross-sectional view of the diaper 1 cut along the line ee of FIG. 2, and FIG. 6B is a schematic cross-sectional view of a part of the diaper 1 cut in the vertical direction. 7A and 7B are diagrams illustrating the joint portion 42c of the core wrap sheet 42. FIG. FIG. 8 is a schematic plan view of the unfolded and extended diaper 1 as seen from the non-skin side in the thickness direction. FIG. 9 is a view showing a joint region 50 between the abdominal belt member 20 and the back belt member 30 and the absorbent main body 10.

  In the diaper 1 of the present embodiment, the top sheet 11 is a white sheet, the absorbent core 41 is a white member, and the core wrap sheet 42 is a green (colored) sheet. Specifically, the entire core wrap sheet 42 is colored green at a constant density. The constituent fibers of the core wrap sheet 42 may be colored green, or the core wrap sheet 42 may be colored green by printing or the like. Further, the other back sheet 12 and exterior sheet 13 constituting the absorbent main body 10 are also white sheets. The composite sheets 21 and 31 (skin-side sheets 23 and 33 and non-skin-side sheets 24 and 34) and the cover sheets 22 and 32 constituting the abdominal belt member 20 and the back belt member 30 are also white sheets.

  In the following description, a portion of the green core wrap sheet 42 that covers the skin side surface 41 a of the absorbent core 41 is referred to as a “skin side wrap portion 42 a”, and a portion that covers the non-skin side surface 41 b of the absorbent core 41 is “ It is referred to as “non-skin side wrap portion 42b”.

  As shown in FIG. 5, the absorbent core 41 has a substantially hourglass shape in plan view, and has a “narrow portion 41 </ b> A” that is narrower than both end portions 41 </ b> B in the longitudinal direction at the central portion in the longitudinal direction. On the other hand, the core wrap sheet 42 has the same rectangular shape as that of the absorbent main body 10, and the core wrap sheet 42 exists outside the narrow portion 41 </ b> A of the absorbent core 41 in the lateral direction. That is, the absorbent main body 10 includes the “inner region 10A” in which the narrow portion 41A of the core wrap sheet 42 and the absorbent core 41 exists, and the core wrap sheet 42 in the lateral direction outside the inner region 10A. However, the absorptive core 41 has a pair of “outer regions 10B” (regions where the absorptive core 41 is bundled) that do not exist.

  As shown in FIG. 6A, in the inner region 10A, from the skin side in the thickness direction, the top sheet 11, the skin side wrap portion 42a of the core wrap sheet 42, the absorbent core 41, and the non-skin side wrap portion of the core wrap sheet 42 42b is located. The absorbent core 41 is a white member but a thick member. Therefore, when the inner region 10A is viewed from the skin side in the thickness direction, the green color of the skin-side wrap portion 42a is visible through the white top sheet 11, but the non-skin is transmitted through the absorbent core 41. The green color of the side wrap portion 42b is difficult to be visually recognized. Therefore, the inner region 10A is visually recognized as pale green.

  Although details will be described later, as shown in FIG. 7A, the absorbent main body 10 has a central portion in which the core wrap sheet 42 is superimposed on the skin side in the thickness direction of the absorbent core 41 in the central portion in the lateral direction. It has area | region 10D. A region other than the central region 10D in the inner region 10A is visually recognized as pale green as described above.

  On the other hand, in the outer region 10B, as shown in FIG. 6A, the skin side wrap part 42a and the non-skin side wrap part 42b of the top sheet 11, the core wrap sheet 42 are located from the skin side in the thickness direction. Therefore, when the outer region 10B is viewed from the skin side in the thickness direction, the green color of the skin-side wrap portion 42a and the green color of the non-skin-side wrap portion 42b are visually recognized through the white topsheet 11. The region 10B is visually recognized as darker green than the inner region 10A (excluding the central region 10D).

  Thus, in the diaper 1, when the absorptive main body 10 is viewed from the skin side in the thickness direction, the outer region 10B looks darker than the inner region 10A, that is, the outer region 10B is on the inner side. Compared to the region 10A, the color difference with respect to white is large. Therefore, when the diaper 1 is worn, the outer region 10B is conspicuous when the wearer widens the waistline opening BH by hand and looks at the absorbent main body 10 from the waistline opening BH. Therefore, the wearer can pass the leg through the outer region 10B as a mark of the position of the leg opening LH, and the diaper 1 can be easily worn.

  In addition, when the absorptive main body 10 is seen from the skin side in the thickness direction, the color difference between the outer region 10B and the inner region 10A is preferably 3 or more. By doing so, even if the outer region 10B and the inner region 10A are the same green, the wearer can recognize that the colors of the two regions 10B and 10A are significantly different, and the outer region 10B can be used as a mark. it can. The same can be said for the color difference of each region described later.

  Moreover, in the diaper 1, the member which connects the abdominal side belt member 20 and the back side belt member 30 in a longitudinal direction does not exist. Therefore, no member exists outside in the lateral direction from the outer region 10B, and both side ends 10a of the absorbent main body 10 in the lateral direction form a part of the pair of leg-hole openings LH. Therefore, even if the wearer looks at the outer region 10B and passes the leg, the leg is not caught by the exterior member or the like and can be safely worn. As described above, the diaper 1 has good wearability.

  Moreover, in the diaper 1, the core wrap sheet | seat 42 generally provided in the diaper is made into a colored sheet | seat so that the outer side area | region 10B may be visually recognized with a dark color. Therefore, compared with the case where a new colored member is added to the diaper 1 so that the outer side area | region 10B is visually recognized with a dark color, cost reduction can be achieved.

  In addition, the excrement absorbed by the absorbent core 41 is less noticeable when the core wrap sheet 42 is a colored sheet than when the core wrap sheet 42 is a white sheet. In particular, the wrapping property of the urine absorbed by the absorbent core 41 is improved by making the color of the core wrap sheet 42 darker than urine (yellow) (here, green). By making the core wrap sheet 42 a colored sheet so that the outer region 10B is visually recognized as a dark color, not only the outer region 10B but also the skin side surface 41a of the absorbent core 41 is covered with the colored sheet. And the concealability of the excrement which the absorptive core 41 absorbed can improve, and the discomfort at the time of diaper 1 replacement | exchange can be reduced.

  In the present invention, the outer region 10B has a larger color difference with respect to white than the inner region 10A. However, as this “white”, a color represented as “N9.5” in the Munsell color system or A color represented by “255, 255, 255” in the RGB color space, so-called pure white, can be exemplified. In addition, a color having the same color system as the pure white, specifically, a color having a color difference from 0 to less than 12 is also included in the “white”.

  The core wrap sheet 42 being “colored” means that the core wrap sheet 42 is colorless and transparent or a color other than “white” as defined above. Specifically, it is preferable that the color difference from the “white” defined above is 40 or more.

  In this embodiment, the color of the core wrap sheet 42 is green. However, the color is not limited to this, and any color such as blue, yellow, pink, or the like may be selected. Further, the entire area of the core wrap sheet 42 is not limited to being colored with a uniform density. For example, it may be colored in a plurality of colors, a single color gradation may be formed, or a colored figure or character may be formed and partially colored. Also in these cases, the outer region 10B only needs to be conspicuous because the average color density of the outer region 10B is darker than the inner region 10A.

  Similarly, the colors of the top sheet 11 and the absorbent core 41 are not limited to white. However, when the absorbent main body 10 is viewed from the skin side in the thickness direction, the color of the top sheet 11 is a relatively light color so that the color of the core wrap sheet 42 can be seen through the top sheet 11. Preferably there is. Specifically, the light transmittance of the top sheet 11 alone is preferably 20% or more. The light transmittance can be measured by, for example, a test method based on JIS Z8722. Moreover, it is preferable that the color of the absorptive core 41 is lighter than that of the core wrap sheet 42 so that the outer region 10B looks darker than the inner region 10A.

  Moreover, the area | region where the absorptive core in this invention does not exist like the outer side area | region 10B is an area | region where the absorptive core 41 does not exist substantially. In other words, the liquid absorbent fibers and SAP constituting the absorbent core 41 may be slightly present in the region where the absorbent core 41 is not present, and the liquid absorption is low at a lower basis weight than the region where the absorbent core 41 is present. It is assumed that the region where the conductive fiber and SAP are present is also included.

  As described above, the core wrap sheet 42 wraps the absorbent core 41, and the joint portion 42 c of the core wrap sheet 42 is formed on the skin side surface 41 a of the absorbent core 41. Therefore, as shown in FIG. 7A, the absorbent main body 10 is adjacent to the outer region 10B, and the adjacent region 10C in which the core wrap sheet 42 and the absorbent core 41 are present, and the core wrap sheet in the lateral center. 42 has the center area | region 10D overlaid by the skin side of the thickness direction rather than the absorptive core 41. FIG. In addition, although the joint part 42c has reached the both ends of the longitudinal direction of the absorptive main body 10 beyond the absorptive core 41, let the area | region where the absorptive core 41 exists among the joint parts 42c be the center area | region 10D.

  When the absorptive main body 10 is viewed from the skin side in the thickness direction, the adjacent region 10C is visually recognized as pale green, similar to the inner region 10A. On the other hand, in the central region 10D, the green portion of the joint portion 42c of the core wrap sheet 42, that is, the core wrap sheet 42 for two layers, is visually recognized through the top sheet 11, and the central region 10D is visually recognized as darker green than the adjacent region 10C. That is, the central region 10D looks darker than the adjacent region 10C, and the central region 10D has a larger color difference with respect to white than the adjacent region 10C.

  Therefore, when the wearer views the absorbent main body 10 from the waistline opening BH when the diaper 1 is worn, the central region 10D is conspicuous, and the wearer can see the central region 10D at the position of the lateral central portion of the absorbent main body 10. Can be a landmark. Therefore, the diaper 1 is appropriately mounted so that the central portion of the absorbent main body 10 is easily aligned with the center position of the wearer and the absorbent core 41 is in close contact with the excretion portion of the wearer.

  Note that the joint portion 42 c of the core wrap sheet 42 may be formed on the non-skin side surface 41 b side of the absorbent core 41. In that case, when the absorptive main body 10 is viewed from the non-skin side in the thickness direction, the central region 10D is conspicuous. Therefore, it can be confirmed from the outside whether the center part in the horizontal direction of the absorbent main body 10 is aligned with the center position of the wearer. The core wrap sheet 42 covering the skin side surface 41a of the absorbent core 41 and the core wrap sheet 42 covering the non-skin side surface 42b may be separate sheets.

  In FIG. 7A, the central region 10 </ b> D (joint portion 42 c) extends across the entire length of the absorbent core 41, but is not limited thereto. As shown in FIG. 7B, the second central region 10 </ b> E that is aligned with the central region 10 </ b> D in the longitudinal direction and in which the core wrap sheet 42 is not overlapped on the skin side in the thickness direction than the absorbent core 41 10 may have. When the absorbent main body 10 is viewed from the skin side in the thickness direction, the central region 10D looks darker than the second central region 10E, that is, the central region 10D is more in comparison with the second central region 10E. The color difference with respect to white is large.

  In FIG. 7B, the side end 42d of the core wrap sheet 42 folded from the left side in the lateral direction at the center portion in the longitudinal direction of the absorbent core 41 is the side end 42e of the core wrap sheet 42 folded from the right side in the horizontal direction. 2nd center area | region 10E which is located in the near side (left side) rather than the core wrap sheet | seat 42 is piled up is formed. 7B has the area | region 10E1 in which the core wrap sheet | seat 42 of one layer exists on the absorptive core 41, and the area | region 10E2 in which the core wrap sheet | seat 42 does not exist on the absorptive core 41. As shown in FIG.

  As described above, the central region 10D that is visually recognized dark and the second central region 10E that is visually recognized light are aligned in the longitudinal direction, so that the central region 10D that is visually recognized dark is easily noticeable. Therefore, when the diaper 1 is worn, the wearer can easily use the central region 10D as a mark of the position of the central portion in the lateral direction of the absorbent main body 10.

  Further, as shown in FIG. 5, it is preferable that the maximum width W of the absorbent main body 10 in the lateral direction and the maximum width W of the absorbent core 41 coincide. Since the absorbent core 41 has a substantially hourglass shape, the width W of the end 41B in the longitudinal direction of the absorbent core 41 is the maximum width. In addition, the maximum width W of the absorptive main body 10 and the absorptive core 41 is a width in a state where the diaper 1 is extended without any wrinkles. Specifically, the width in a state where the diaper 1 is extended until the dimension of each member (for example, the top sheet 11 or the like) constituting the diaper 1 is equal to or close to the dimension of the member itself. .

  In this case, the outer region 10 </ b> B is interrupted at both ends in the longitudinal direction of the absorbent main body 10, and exists in the central portion in the longitudinal direction of the absorbent main body 10. Therefore, at the time of wearing the diaper 1, the wearer can mark the outer region 10 </ b> B as a mark of the position of the central portion in the longitudinal direction of the absorbent main body 10. Therefore, the diaper 1 is appropriately mounted so that the longitudinal center portion of the absorbent main body 10 is easily aligned with the center position of the wearer and the absorbent core 41 is in close contact with the excretion portion of the wearer.

  Further, as shown in FIG. 5, the core wrap sheet 42 extends beyond the absorbent core 41 to the end 10 b in the longitudinal direction of the absorbent main body 10. Therefore, the absorbent main body 10 has a pair of end regions 10F in which the core wrap sheet 42 exists but the absorbent core 41 does not exist at both ends in the longitudinal direction, and inside the longitudinal direction of each end region 10F. And a pair of inner end region 10G in which the core wrap sheet 42 and the absorbent core 41 are present. In addition, the site | part covered with the cover sheets 22 and 32 shall not be contained in the edge part area | region 10F.

  When the absorbent main body 10 is viewed from the skin side in the thickness direction, the end region 10F is similar to the outer region 10B, the skin side portion 42a and the non-skin side portion of the core wrap sheet 42 via the top sheet 11. 42b is visually recognized and it is visually recognized dark green. On the other hand, in the inner end region 10G, similarly to the inner region 10A, the skin side portion 42a of the core wrap sheet 42 is visually recognized through the top sheet 11, but the non-skin side portion 42b is hardly visible and is light green. Visible. That is, the end region 10F looks darker than the inner end region 10G, and the end region 10F has a greater color difference with respect to white than the inner end region 10G.

  Therefore, when the wearer views the absorbent main body 10 from the waistline opening BH when the diaper 1 is worn, the end region 10F is conspicuous, and the wearer views the end region 10F in the longitudinal direction of the absorbent core 41. It can be used as a landmark of the position. Therefore, the wearer can check whether the absorbent main body 10 is firmly pulled up based on the position of the end region 10F when the diaper 1 is pulled up while holding the belt members 20 and 30. Therefore, the diaper 1 is appropriately attached so that the absorbent core 41 is in close contact with the excretion part of the wearer.

  Furthermore, as shown in FIG. 5, it is preferable that the lengths (L1, L2) in the longitudinal direction of the pair of end regions 10F differ between the ventral side and the dorsal side. In this case, the wearer or a caregiver who wears the diaper 1 on the wearer can identify the front and rear (abdominal side and back side) of the diaper 1 based on the difference in the length of the end region 10F. Can be prevented from being attached to. This is particularly effective when the shape and size of the abdominal belt member 20 and the back belt member 30 are the same as in the diaper 1 of the present embodiment.

  Moreover, generally the image which the absorptive core 41 is extended in the back | dorsal side rather than the abdominal side is given so that a wearer's buttocks may be covered with the absorptive core 41. Therefore, the front and back of the diaper 1 are sensibly identified by making the length L2 of the back end region 10F shorter than the length L1 of the abdominal end region 10F.

  Moreover, the absorptive main body 10 has a pair of 2nd edge part area | region 10H covered with the cover sheets 22 and 32 in the both ends of a longitudinal direction. When the absorbent main body 10 is viewed from the skin side in the thickness direction, the second end region 10H has the skin side portion 42a of the core wrap sheet 42 and the non-skin through the cover sheets 22, 32 and the top sheet 11. The side part 42b is visually recognized and is visually recognized as pale green. Therefore, the end region 10F is sandwiched between the second end region 10H and the inner end region 10G that are visually recognized as pale green. Therefore, when the wearer looks at the absorbent main body 10 from the waist opening BH, the end region 10F is more conspicuous, and the wearer uses the end region 10F as a mark for the end of the absorbent core 41 in the longitudinal direction. It becomes easy.

  And it is good for the length (L3, L4) of the longitudinal direction of a pair of 2nd edge part area | region 10H to differ on a ventral | abdominal side and a back | dorsal side. By doing so, the wearer and the caregiver can identify the front and back of the diaper 1 based on the difference in the length of the second end region 10H, and can prevent the diaper 1 from being worn back and forth.

  Moreover, the absorptive main body 10 and the cover sheets 22 and 32 are joined by an adhesive or the like. Although not shown, it is preferable that the lower ends of the cover sheets 22 and 32 in the longitudinal direction of the diaper 1 are not joined to the absorbent main body 10. By doing so, when the wearer sees the absorbent main body 10 from the waist opening BH, the lower ends of the cover sheets 22 and 32 float up from the absorbent main body 10 and become conspicuous. Can also be used as a mark of the end of the absorbent core 41 in the longitudinal direction.

  In the belt members 20 and 30 of the present embodiment, the composite sheets 21 and 31 and the cover sheets 22 and 32 are separate members, but the present invention is not limited to this. A part of the composite sheets 21 and 31 may be a cover sheet. For example, the upper end of at least one of the skin-side sheets 23 and 33 and the non-skin-side sheets 24 and 34 constituting the composite sheets 21 and 31 is extended and folded back to the skin side, and the longitudinal end of the absorbent main body 10 is formed. It may be covered.

  So far, the case where the absorbent main body 10 is viewed from the skin side in the thickness direction has been described. Next, the case where the absorbent main body 10 is viewed from the non-skin side in the thickness direction will be described.

  In the diaper 1 of the present embodiment, as illustrated in FIG. 6B and the like, the back sheet 12 and the exterior sheet 13 are arranged on the non-skin side in the thickness direction from the absorber 40. Further, the composite sheets 21 and 31 of the belt members 20 and 30 are disposed on the non-skin side in the thickness direction from the absorbent main body 10. These sheets 12, 13, 21, and 31 are white sheets. Therefore, when the absorptive main body 10 is viewed from the non-skin side in the thickness direction, the green color of the core wrap sheet 42 (mainly the non-skin side portion 42b) is visually recognized through these sheets 12, 13, 21, and 31. Is done. Therefore, the diaper 1 can be colored, and the appearance of the diaper 1 can approach the underwear, reducing the diaperiness.

  Moreover, the non-skin side surface 41b of the absorptive core 41 is covered with the colored core wrap sheet 42, so that the excrement absorbed by the absorptive core 41 is good. Therefore, it is difficult to know the state of excretion from the appearance of the diaper 1, and the resistance of the wearer to the diaper 1 can be reduced.

  Thus, when the diaper 1 (absorbent body 10) is viewed from the non-skin side in the thickness direction, the back sheet 12, the exterior sheet 13, and the composite sheet 21 so that the color of the core wrap sheet 42 can be seen through. , 31 are preferably relatively light colors. Specifically, the light transmittance of these sheets 12, 13, 21, and 31 is preferably 20% or more.

  And as shown in FIG. 8, the absorptive main body 10 has a pair of third end regions 10I covered with the composite sheets 21 and 31 of the belt members 20 and 30 at both ends in the longitudinal direction, and a pair of And an intermediate region 10J between the third end regions 10I. Further, the third end region 10I has a fourth end region 10I1 where the core wrap sheet 42 and the absorbent core 41 are present, and the core wrap sheet 42 exists outside the fourth end region 10I1 in the longitudinal direction. However, the absorbent core 41 has a fifth end region 10I2 that does not exist.

  As shown in FIG. 6B, when the fourth end region 10I1 is viewed from the non-skin side in the thickness direction, the core wrap sheet is interposed through the composite sheet 21 (31), the exterior sheet 13, and the back sheet 12. The non-skin side part 42b of 42 is visually recognized. On the other hand, when the intermediate region 10J is viewed from the non-skin side in the thickness direction, the non-skin side portion 42b of the core wrap sheet 42 is visually recognized through the exterior sheet 13 and the back sheet 12. Therefore, when the absorbent main body 10 is viewed from the non-skin side in the thickness direction, the intermediate region 10J looks darker than the fourth end region 10I1, which is a part of the third end region 10I. That is, the intermediate region 10J has a larger color difference with respect to white than the fourth end region 10I1.

  Therefore, when a wearer or a caregiver sees the diaper 1 in a worn state from the outside, the intermediate region 10J is conspicuous, and the intermediate region 10J is positioned in the longitudinal center of the absorbent main body 10, that is, the position of the lower end of the diaper 1. Can be a landmark. Therefore, the wearer or the caregiver can check whether the absorbent main body 10 is firmly pulled up based on the position of the intermediate region 10J. Therefore, the diaper 1 is appropriately attached so that the absorbent core 41 is in close contact with the excretion part of the wearer.

  Moreover, the absorptive core 41 does not exist in the fifth end region 10I2. Therefore, when the fifth end region 10I2 is viewed from the non-skin side in the thickness direction, the skin side portion 42a of the core wrap sheet 42 is easily visible and the color looks darker than the fourth end region 10I1. . That is, the color difference with respect to white is larger in the fifth end region 10I2 than in the fourth end region 10I1.

  Therefore, when the wearer or the caregiver sees the worn diaper 1 from the outside, the fifth end region 10I2 is conspicuous, and the fifth end region 10I2 is a mark of the end position in the longitudinal direction of the absorbent core 41. Can be. Therefore, a wearer or a caregiver can check whether the absorbent main body 10 is firmly pulled up based on the position of the fifth end region 10I2. Therefore, the diaper 1 is appropriately attached so that the absorbent core 41 is in close contact with the excretion part of the wearer.

  Further, in the ventral belt member 20, as shown in FIG. 8, the longitudinal direction of the waistline elastic member 25 in the fourth end region 10I1 is larger than the longitudinal interval L5 of the waistline elastic member 25 in the fifth end region 10I2. The interval L6 is increased. The wider the gap between the waistline elastic members 25, the larger the wrinkles are generated when the composite sheet 21 contracts, and the composite sheet 21 tends to float from the absorbent main body 10. Therefore, when the absorbent main body 10 is viewed from the non-skin side in the thickness direction, the fourth end region 10I1 is visually recognized as a lighter green, the fifth end region 10I2 is easily noticeable, and the fifth end region 10I2 Tends to be a mark of the end of the absorbent core 41 in the longitudinal direction.

  As described above, when the diaper 1 (absorbent body 10) is viewed from the non-skin side in the thickness direction, the white belt members 20 and 30 are dark green from the upper side in the vertical direction as shown in FIG. A fifth end region 10I2, a fourth end region 10I1 that is light green, and an intermediate region 10J that is dark green are arranged. Thus, the change of the color shading has arisen in the external appearance of the diaper 1, and the design property of the diaper 1 increases and the diaperiness can be reduced.

  Even when the diaper 1 (absorbent body 10) is viewed from the skin side in the thickness direction, as shown in FIG. 5, from the upper side in the vertical direction, the white belt members 20, 30 and the second end portion that is light green A region 10H, an end region 10F that is dark green, an inner end region 10G that is light green, and an inner region 10A that is light green, or an outer region 10B that is dark green are lined up, and a change in color density changes. Has occurred. However, when the absorbent main body 10 is viewed from the skin side in the thickness direction and when viewed from the non-skin side, the change in color shade in the vertical direction is different, that is, the change in the vertical direction of the color difference with respect to white. Is different. Therefore, the wearer and the caregiver can identify the front and back of the diaper 1 based on the difference in the color density of the diaper 1. Therefore, it can prevent that the diaper 1 will be mounted | worn reversely.

  Moreover, the composite sheets 21 and 31 which the belt members 20 and 30 have are joined to the absorptive main body 10 by the adhesive agent etc. in the joining area | region 50 shown in FIG. However, it is preferable that the lower end portions 21 a and 31 a of the composite sheets 21 and 31 in the vertical direction are not joined to the absorbent main body 10. By doing so, when the diaper 1 is worn, when the wearer widens the waist opening BH by hand, the lower end portions 21a and 31a of the composite sheets 21 and 31 are easily turned to the non-skin side. Therefore, the leg-hole opening LH is widened, the wearer can easily pass the leg, and the wearability of the diaper 1 is improved.

  Further, when the intermediate region 10J not covered with the belt members 20 and 30 is viewed from the non-skin side in the thickness direction, as shown in FIG. 6A, the lateral central portion 10J1 where the absorbent core 41 exists is Compared to the side portion 10J2 in the direction (excluding the portion covered with the top sheet 11), the skin side portion 42a of the core wrap sheet 42 is less visible. Therefore, the side portion 10J2 in the horizontal direction is visually recognized as darker green than the central portion 10J1 (that is, the color difference with respect to white is larger).

  Therefore, when a wearer or a caregiver sees the worn diaper 1 from the outside, the lateral side 10J2 of the intermediate region 10J is conspicuous, and the lateral side 10J2 is laterally aligned with the absorbent core 41. It can be used as a mark of the end position. Therefore, it can be confirmed from the outside whether the absorbent core 41 is aligned with the center position (excrement) of the wearer.

=== Second Embodiment ===
Drawing 10 is a figure explaining diaper 1 of a 2nd embodiment, and is a schematic top view which looked at diaper 1 of a deployment and extension state from the skin side. The diaper 1 of 2nd Embodiment is the same structure as the diaper 1 of 1st Embodiment except the shape of the composite sheet 31 of the back side. The composite sheet 31 on the back side of the second embodiment is larger than the composite sheet 21 on the ventral side, and has a substantially rectangular shape with a curved lower end portion in the vertical direction. According to such a composite sheet 31, the wearer's buttocks can be covered. Moreover, since the shape of the abdominal side belt member 20 and the back side belt member 30 differs, it can prevent that the diaper 1 will be mounted | worn reversely.

  Similar to the absorbent main body 10 of the first embodiment, the absorbent main body 10 of the second embodiment also includes a pair of third end regions 10I covered with belt members 20 and 30 (composite sheets 21 and 31), and And an intermediate region 10J therebetween. As described above, when the absorbent main body 10 is viewed from the non-skin side in the thickness direction, the third end region 10I has an amount corresponding to the composite sheets 21 and 31 compared to the intermediate region 10J. Concealment of excrement absorbed by 41 is good. Therefore, when the back side composite sheet 31 is long like the diaper 1 of the second embodiment, the intermediate region 10J becomes small, and therefore, the excretion state becomes difficult to be known from the appearance of the diaper 1. Therefore, the resistance to the wearer's diaper 1 can be reduced.

=== Comparison of color intensity ===
The color density of the region (inner region 10A, outer region 10B, etc.) of the absorbent main body 10 can be compared with the color difference with respect to white. And can be obtained by the following method.

  First, the diaper 1 to be measured is fixed to the plate in a state where the diaper 1 is expanded and extended. The unfolded state of the diaper 1 is a state in which the joining of both side portions in the lateral direction of the pair of belt members 20 and 30 in the pant-type diaper 1 is released and expanded as shown in FIGS. The stretched state of the diaper 1 is a state where the diaper 1 is stretched so that the wrinkles generated in the diaper 1 are not substantially visually recognized. Specifically, it is a state in which each member constituting the diaper 1 (for example, the top sheet 11 or the like) is stretched until the dimension of the member is equal to or close to the dimension of the member itself. And when comparing the color strength when the absorbent main body 10 is viewed from the skin side in the thickness direction, the skin side surface of the diaper 1 is set to the upper side, and the absorbent main body 10 is set to the non-skin side in the thickness direction. When comparing the color intensity when viewed from above, the non-skin side surface of the diaper 1 is set on the upper side.

Then, using a color difference meter, the white reference region and the target region (for example, the inner region 10A and the outer region 10B shown in FIG. 10) to be compared are measured, and the measurement result (L ^* ) of each region is measured ^. Value, a ^* value, b ^* value). Here, as shown in FIG. 10, a region 10K in the back belt member 30 where the waistline elastic member 35 does not exist is defined as a white reference region, and a color obtained by measuring the region 10K is defined as white of the present invention. However, the present invention is not limited to this, and any region may be used as long as it is a white region such as a white plate on which the diaper 1 is placed.

Then, for each target region (for example, 10A, 10B), the color difference ΔE ^* ab with respect to the white reference region (for example, 10K) is acquired. The color difference ΔE ^* ab can be calculated by the following equation based on the difference (ΔL ^* , Δa ^* , Δb ^* ) between the measurement result of the target area and the measurement result of the reference area.
ΔE ^* ab = [(ΔL ^* ) ² + (Δa ^* ) ² + (Δb ^* ) ² ] ^1/2
It can be said that the region having a larger color difference ΔE ^* ab has a larger color difference with respect to white and a darker color, and the region having a smaller color difference ΔE ^* ab has a lighter color.
In addition, it is preferable to acquire color difference (DELTA ⁾ E ^* ab based on the average value of the result of having measured the same location several times for every area | region, or the average value of the measurement result of a several different location.

  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, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof.

  For example, a diaper that covers up to the absorbent core 41 with the cover sheets 22 and 32 and does not have the end region 10F, or a diaper that does not have the cover sheets 22 and 32 and does not have the second end region 10H. The diaper etc. which the edge of the absorptive core 41 and the core wrap sheet | seat 42 corresponds, and does not have the edge part area | region 10F and the 5th edge part area | region 10I2 may be sufficient.

1 Diaper (pants-type absorbent article), BH waistline opening, LH leg opening,
10 Absorbent body, 11 Top sheet, 12 Back sheet, 13 Exterior sheet,
20 ventral belt member (belt member), 21 composite sheet (sheet),
22 cover sheet, 23 skin side sheet, 24 non-skin side sheet,
25 waistline elastic member (elastic member), 30 back belt member (belt member),
31 composite sheet (sheet), 32 cover sheet, 33 skin side sheet,
34 non-skin side sheet, 35 waistline elastic member (elastic member),
40 Absorber, 41 Absorbent core, 41A Narrow part, 42 Core wrap sheet,
10A inner region, 10B outer region, 10C adjacent region, 10D central region,
10E second central region, 10F end region, 10G inner end region,
10H second end region, 10I third end region, 10I1 fourth end region,
10I2 5th end region, 10J intermediate region,

Claims (11)

A pants-type absorbent article having a longitudinal direction, a lateral direction, and a thickness direction, in which a waist opening and a pair of leg openings are formed,
An absorbent body provided with an absorbent body, folded in half in the longitudinal direction, and the longitudinal direction along the longitudinal direction;
A pair of belt members that are arranged at both ends in the longitudinal direction of the absorbent main body and extend along the lateral direction;
Both side ends of the absorbent main body in the lateral direction form part of the pair of leg opening portions,
The absorbent body has an absorbent core, and a colored core wrap sheet covering the skin side surface and the non-skin side surface of the absorbent core,
The absorbent core has a narrow part narrower than the end part in the longitudinal direction at the central part in the longitudinal direction,
The absorbent main body has an inner region where the core wrap sheet and the narrow portion are present, and the core wrap sheet is present outside the inner region in the lateral direction, but the absorbent core is not present. An outer region,
A pants-type absorbent article characterized in that when the absorbent main body is viewed from the skin side in the thickness direction, the outer region has a larger color difference with respect to white than at least a part of the inner region. . The pant-type absorbent article according to claim 1,
The absorbent main body is adjacent to the outer region, the adjacent region where the core wrap sheet and the absorbent core are present, and the core wrap sheet in the central portion in the lateral direction is more than the absorbent core. A central region overlapped on the skin side in the thickness direction,
A pant-type absorbent article, wherein when the absorbent main body is viewed from the skin side in the thickness direction, the central region has a greater color difference with respect to white than the adjacent region. The pant-type absorbent article according to claim 2,
The absorbent main body has a second central region that is aligned with the central region in the longitudinal direction, and the core wrap sheet is not overlapped on the skin side in the thickness direction than the absorbent core,
A pant-type absorbent article, wherein when the absorbent main body is viewed from the skin side in the thickness direction, the central region has a larger color difference with respect to white than the second central region. The pant-type absorbent article according to any one of claims 1 to 3,
A pants-type absorbent article, wherein the maximum width of the absorbent main body in the transverse direction and the maximum width of the absorbent core coincide. The pant-type absorbent article according to any one of claims 1 to 4,
The absorbent main body has a pair of end regions where the core wrap sheet exists but the absorbent core does not exist at both ends in the longitudinal direction, and inside the longitudinal direction of each of the end regions, A pair of inner end regions where the core wrap sheet and the absorbent core exist,
A pant-type absorbent article, wherein when the absorbent main body is viewed from the skin side in the thickness direction, the end region has a greater color difference with respect to white than the inner end region. The pant-type absorbent article according to claim 5,
A pants-type absorbent article, wherein the pair of end regions have different lengths in the longitudinal direction. The pant-type absorbent article according to any one of claims 1 to 6,
The belt member has a cover sheet on the skin side in the thickness direction than the absorbent main body,
The absorbent main body has a pair of second end regions covered with the cover sheet at both ends in the longitudinal direction,
The length of the longitudinal direction of said pair of 2nd edge part area differs, The underpants type absorbent article characterized by the above-mentioned. The pant-type absorbent article according to any one of claims 1 to 7,
The belt member has a composite sheet in which an elastic member extending and contracting in the lateral direction is interposed between a plurality of sheets on the non-skin side in the thickness direction from the absorbent main body,
The absorbent main body has a pair of third end regions covered with the composite sheet at both ends in the longitudinal direction, and an intermediate region between the pair of third end regions,
The pants characterized in that when the absorbent main body is viewed from the non-skin side in the thickness direction, the intermediate region has a larger color difference with respect to white than at least a part of the third end region. Mold absorbent article. The pant-type absorbent article according to claim 8,
The third end region has a fourth end region where the core wrap sheet and the absorbent core are present, and the core wrap sheet exists outside the fourth end region in the longitudinal direction. And the absorbent core has a fifth end region that does not exist,
A pants type wherein the fifth end region has a larger color difference with respect to white than the fourth end region when the absorbent main body is viewed from the non-skin side in the thickness direction. Absorbent article. The pant-type absorbent article according to claim 8 or 9,
A pants-type absorbent article, wherein a lower end portion of the composite sheet in the longitudinal direction is not joined to the absorbent main body. The pant-type absorbent article according to any one of claims 1 to 10,
The underpants-type absorbent article, wherein the longitudinal change of the color difference with respect to white is different between when the absorbent main body is viewed from the skin side in the thickness direction and when viewed from the non-skin side.

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