Absorbent panty-type items

Abstract

The present invention provides a pant-type absorbent garment that ensures coordination between the abdominal waist area and the absorbent body, as well as a good fit of the absorbent body to the body, while also easily reducing discomfort during wear. [Solution] In a pant-type absorbent article, when the pant-type absorbent article is unfolded and stretched so that the longitudinal direction of the absorbent core is aligned with the vertical direction of the pant-type absorbent article, in the longitudinal direction, the ventral joint portion (60) straddles the ventral end of the absorbent core, and a first non-joint portion (81) is provided where the ventral end of the absorbent body is not joined to the ventral waist portion, and the first non-joint portion (81) is provided in the longitudinal direction from a predetermined position a distance of a first length dorsal from the ventral end of the absorbent body to the ventral end, and in the left-right direction from one end to the other of the absorbent body, and the area of ​​the ventral joint portion (60) is larger than the area of ​​the first non-joint portion (81).

Description

Technical Field

[0004]

[0001] The present invention relates to a pant-type absorbent article.

Background Art

[0002] There is known a pant-type absorbent article having an outer sheet and an absorbent body joined to the outer sheet, and a non-joined portion provided in a part of the overlapping portion between the outer sheet and the absorbent body. Patent Document 1 discloses a pant-type absorbent article in which a non-joined portion is provided in the central portion in the left-right direction of the absorbent body in order to form a pocket that opens at the ventral end of the absorbent body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a pant-type absorbent article that ensures coordination between the abdominal waist portion and the absorbent main body, as well as a good fit of the absorbent main body to the body, while also easily reducing discomfort when worn. [Means for solving the problem]

[0006] The main invention for achieving the above objective is a pair of pants-type absorbent articles having an up-down direction and a left-right direction, an ventral waist portion, a dorsal waist portion which is a separate member from the ventral waist portion, and an absorbent body equipped with an absorbent core, wherein the ventral end of the absorbent body is joined to the ventral waist portion at a ventral joint, and the dorsal end of the absorbent body is joined to the dorsal waist portion at a dorsal joint, and a part of the absorbent body partitions the leg opening, wherein the pair of pants-type absorbent articles is unfolded and extended so that the longitudinal direction of the absorbent core is aligned with the up-down direction of the pair of pants-type absorbent articles. In this pant-type absorbent article, in the longitudinal direction, the ventral joint spans the ventral end of the absorbent core, and a first non-joint portion is provided where the ventral end of the absorbent body is not joined to the ventral waist portion, and the first non-joint portion is provided in the longitudinal direction from a predetermined position a distance of a first length dorsally from the ventral end of the absorbent body to the ventral end, and in the left-right direction from one end to the other of the absorbent body, and the area of ​​the ventral joint is larger than the area of ​​the first non-joint portion.

[0007] Other features of the present invention will be made clearer by description in this specification and the accompanying drawings. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a pant-type absorbent article that ensures coordination between the abdominal waist portion and the absorbent main body, as well as a good fit of the absorbent main body to the body, while easily reducing discomfort when worn. [Brief explanation of the drawing]

[0009] [Figure 1] This is a front view of the pant-type absorbent item 1, seen from the ventral side. [Figure 2] This is a plan view of the pant-type absorbent item 1 in its unfolded and stretched state, as seen from the skin side. [Figure 3] Figure 3A is a schematic cross-sectional view of Figure 2 at the first centerline CL1, and Figure 3B is a schematic cross-sectional view of Figure 2 at the second centerline CC1. [Figure 4] This is an enlarged plan view of the absorbent body 10 of the pant-type absorbent item 1 when viewed from the skin side, in an unfolded and stretched state. [Figure 5] This is an enlarged plan view of the ventral joint portion 60 of the pant-type absorbent item 1 in its unfolded and stretched state, as seen from the skin side. [Figure 6] This is an explanatory diagram showing how the wearer adjusts the position of the absorbent body 10. [Figure 7] This is an enlarged plan view of the dorsal joint portion 70 of the pant-type absorbent item 1 in its unfolded and stretched state, as seen from the skin side. [Figure 8] Figure 8A is an explanatory diagram showing an example of a pant-type absorbent article 1 in its packaged state, and Figure 8B is an explanatory diagram showing a cross-section of the pant-type absorbent article 1 in its packaged state. [Modes for carrying out the invention]

[0010] The following matters become clear from this specification and the accompanying drawings:

[0011] (Aspect 1) A pant-type absorbent article having vertical and horizontal directions, comprising an ventral waist portion, a dorsal waist portion separate from the ventral waist portion, and an absorbent body equipped with an absorbent core, wherein the ventral end of the absorbent body is joined to the ventral waist portion at a ventral joint, and the dorsal end of the absorbent body is joined to the dorsal waist portion at a dorsal joint, and a part of the absorbent body partitions the leg opening, wherein when the pant-type absorbent article is unfolded and stretched so that the longitudinal direction of the absorbent core is along the vertical direction of the pant-type absorbent article, the length In the hand direction, the ventral joint spans the ventral end of the absorbent core, and a first non-joint portion is provided where the ventral end of the absorbent body is not joined to the ventral waist portion, the first non-joint portion is provided in the longitudinal direction from a predetermined position a distance of a first length dorsal from the ventral end of the absorbent body to the ventral end, and in the left-right direction from one end to the other of the absorbent body, and the area of ​​the ventral joint is larger than the area of ​​the first non-joint portion, characterized in that the pants-type absorbent article is provided in the hand direction, the ventral joint spans the ventral end of the absorbent core, and a first non-joint portion is provided where the ventral end of the absorbent body is not joined to the ventral waist portion, the first non-joint portion is provided in the longitudinal direction from a predetermined position a distance of a first length dorsal from the ventral end of the absorbent body, and in the left-right direction from one end to the other, the area of ​​the ventral joint is larger than the area of ​​the first non-joint portion.

[0012] The absorbent pants of Embodiment 1 have a first non-joint portion where the ventral end of the absorbent body is not joined to the ventral waistband. This makes it easier for the wearer to feel discomfort through the first non-joint portion, and after putting on the absorbent pants, they can adjust the shape and position of the absorbent body by holding the first non-joint portion with their hand. This eliminates wrinkles and twists in the ventral portion of the absorbent body, easily reduces discomfort when wearing the absorbent pants, and improves comfort when wearing the absorbent pants. In addition, because the ventral joint portion straddles the ventral end of the absorbent core in the longitudinal direction, it becomes easier to pull up the part of the absorbent body where the absorbent core, which is the more rigid part, is located. Furthermore, because the area of ​​the ventral joint portion is larger than the area of ​​the first non-joint portion, the ventral waistband and the absorbent body can be joined as widely as possible, and even with a three-piece type absorbent pants, it is possible to suppress a decrease in the interoperability between the ventral waistband and the absorbent body, and the fit of the absorbent body to the body.

[0013] (Aspect 2) The pant-type absorbent article according to Aspect 1, wherein in the deployed and stretched state, the first length is greater than the average thickness in the range of the absorbent body.

[0014] According to the pant-type absorbent article of Aspect 2, by ensuring a sufficient longitudinal length of the first non-joint portion, it becomes easier for the wearer to grasp the first non-joint portion by hand and to adjust the shape and position of the absorbent body. Further, since the first non-joint portion is provided in a range of the absorbent body where the absorbent core is not provided, that is, a range where the thickness is thin, it is easy to reduce the sense of discomfort obtained through the first non-joint portion.

[0015] (Aspect 3) [[ID=1,2]]The pant-type absorbent article according to Aspect 1 or 2, wherein the ventral body circumferential portion has a ventral body circumferential elastic member that can expand and contract in the left-right direction, and in the deployed and stretched state, when viewed in the thickness direction of the pant-type absorbent article, the first non-joint portion overlaps at least a part of the ventral body circumferential elastic member.

[0016] According to the pant-type absorbent article of Aspect 3, due to the elasticity of the ventral body circumferential elastic member, after adjusting the shape and position of the absorbent body, the first non-joint portion can be pressed against the wearer's body, so that both the sense of discomfort during wearing of the pant-type absorbent article can be easily reduced and the fit of the absorbent body to the body after reducing the sense of discomfort can be improved.

[0017] (Aspect 4) The pant-type absorbent article according to any one of Aspects 1 to 3, which has a crutch elastic member provided on the non-skin side of the absorbent core and extending and contracting along the longitudinal direction, and in the deployed and stretched state, in the longitudinal direction, the crutch elastic member is located dorsal to the first non-joint portion.

[0018] According to the pant-type absorbent article of Aspect 4, when the wearer holds the first non-joint portion by hand to adjust the shape and position of the absorbent body, due to the elasticity of the crutch elastic member, it is also possible to adjust the position in the crutch area of the absorbent body.

[0019] (Aspect 5) In the deployed and stretched state, in the longitudinal direction, the ventral end of the infrascrotal elastic member does not overlap with the ventral body circumferential portion, and the dorsal end of the infrascrotal elastic member overlaps with the dorsal body circumferential portion. The pant-type absorbent article according to Aspect 4.

[0020] According to the pant-type absorbent article of Aspect 5, since the ventral end of the infrascrotal elastic member does not overlap with the ventral body circumferential portion in the longitudinal direction, when the wearer holds the first non-joint portion by hand to adjust the shape and position of the absorbent body, the longitudinal contraction of the ventral body circumferential portion can be suppressed. Further, since the dorsal end of the infrascrotal elastic member overlaps with the dorsal body circumferential portion in the longitudinal direction, the elasticity of the infrascrotal elastic member acts, and the absorbent body can be fitted into the groove of the wearer's buttocks.

[0021] (Aspect 6) In the deployed and stretched state, a second non-joint portion is provided in a range from a predetermined position that is separated ventrally by a second length from the dorsal end of the ventral body circumferential portion to the dorsal end, and the dorsal end portion of the ventral body circumferential portion is not joined to the absorbent body. The first length is larger than the second length. The pant-type absorbent article according to any one of Aspects 1 to 5.

[0022] According to the pant-type absorbent article of Aspect 6, since a second non-joint portion in which the dorsal end portion of the ventral body circumferential portion is not joined to the absorbent body is provided, it is possible to suppress the adhesive of the ventral joint portion from bleeding out from the dorsal end of the ventral body circumferential portion. Further, in the longitudinal direction, by making the length of the first non-joint portion longer than the length of the second non-joint portion, it becomes easier for the wearer to grasp the first non-joint portion by hand and easier to adjust the shape and position of the absorbent body. Also, since the entire first non-joint portion is covered by the ventral body circumferential portion from the appearance, even when the length of the first non-joint portion is made longer than the length of the second non-joint portion in this way, the influence on the appearance can be suppressed. Conversely, the influence on the appearance by the ventral body circumferential portion can also be suppressed by the amount that the length of the second non-joint portion can be shortened.

[0023] (Aspect 7) The ventral waist portion has an elastic ventral waist member that is expandable and contractible in the left-right direction, and the elastic ventral waist member has a discontinuous ventral portion that is discontinuous in the left-right direction, and a pair of continuous ventral portions that are continuous in the left-right direction on both sides of the discontinuous ventral portion, and in the unfolded and stretched state, when viewed in the thickness direction of the pants-type absorbent article, at least a part of the discontinuous ventral portion overlaps with the absorbent core, as described in any of embodiments 1 to 6.

[0024] In the pant-type absorbent article of embodiment 7, at least a portion of the ventral discontinuous portion overlaps with the absorbent core, thereby suppressing the contraction of the absorbent core due to the elasticity of the ventral waist elastic member. Furthermore, the elasticity of the ventral continuous portions located on both the left and right sides of the ventral discontinuous portion of the ventral waist elastic member pulls the absorbent body outward on both sides, thereby suppressing the width of the absorbent body.

[0025] (Pattern 8) The pant-type absorbent article according to embodiment 7, wherein the dorsal waist portion has a dorsal waist elastic member that is expandable in the left-right direction, the dorsal waist elastic member has a dorsal discontinuous portion that is discontinuous in the left-right direction, and a pair of dorsal continuous portions that are continuous in the left-right direction on both sides of the dorsal discontinuous portion in the left-right direction, and in the unfolded and extended state, the inner end of the ventral continuous portion in the left-right direction is positioned inside the left-right ends of the absorbent core, and the inner end of the dorsal continuous portion in the left-right direction is positioned outside the left-right ends of the absorbent core.

[0026] According to the pant-type absorbent article of embodiment 8, on the ventral side of the absorbent body, the inner ends in the left-right direction of the ventral continuous portion are positioned inward from both ends in the left-right direction of the absorbent core, so that the absorbent core can be fitted to the contours of the body by the elasticity of the ventral continuous portion. On the other hand, on the dorsal side of the absorbent body, the inner ends in the left-right direction of the dorsal continuous portion are positioned outward from both ends in the left-right direction of the absorbent core, so that wrinkles and widthening of the absorbent core can be suppressed.

[0027] (Aspect 9) In the packaged state of the pant-type absorbent article, it is packaged folded in half along the fold line portion that runs in the left-right direction, and when the packaged pant-type absorbent article is viewed in the thickness direction, the fold line portion has a fold line axis located at the end of the pant-type absorbent article, and in the unfolded and stretched state, the first non-joint portion does not overlap with the fold line axis, as described in any of embodiments 1 to 8.

[0028] According to the pant-type absorbent article of embodiment 9, it is possible to suppress the formation of creases in the first non-jointed portion, thereby suppressing the difficulty in reducing discomfort caused by creases.

[0029] (Aspect 10) The pant-type absorbent article according to any one of embodiments 1 to 9, wherein, when viewed in the thickness direction of the pant-type absorbent article, there is no member covering the ventral end of the absorbent body, and there is a member covering the dorsal end of the absorbent body.

[0030] According to the pant-type absorbent article of embodiment 10, since there is no member covering the ventral end of the absorbent body, the ventral end of the absorbent body can be made to stand upright when the pant-type absorbent article is worn, thereby suppressing leakage of excretory fluid. On the other hand, since a member covering the dorsal end of the absorbent body is provided, it is possible to suppress peeling off from the dorsal joint due to friction when turning over in a sleeping position.

[0031] (Aspect 11) The absorbent pant-type absorbent article according to any one of embodiments 1 to 10, wherein the dorsal end of the absorbent body is provided with a third non-joint portion that is not joined to the dorsal waist portion, and in the unfolded and extended state, the third non-joint portion is provided in the longitudinal direction from a predetermined position a third length away from the dorsal end of the absorbent body toward the ventral side to the dorsal end, and in the left-right direction from one end to the other of the absorbent body, and the third length is smaller than the first length.

[0032] According to the pant-type absorbent article of embodiment 11, the length of the third non-joint portion provided at the back end of the absorbent body in the longitudinal direction can be shortened to reduce discomfort for the wearer.

[0033] (Aspect 12) In the unfolded and stretched state, the first length at the center of the pant-type absorbent article in the left-right direction is greater than the length from the ventral end of the absorbent core to the ventral end of the ventral joint, according to any one of embodiments 1 to 11.

[0034] According to the pant-type absorbent article of embodiment 12, by ensuring sufficient length in the longitudinal direction of the first non-joint portion, the wearer can easily grasp the first non-joint portion with their hand, and it becomes easier to adjust the shape and position of the absorbent body.

[0035] (Aspect 13) In the left-right direction, the ventral joint spans both ends of the absorbent core, and the left-right ends of the absorbent body are provided with fourth non-joint portions that are not joined to the ventral waist portion, and in the unfolded and extended state, each of the fourth non-joint portions at the left-right ends is provided in a range from a predetermined position a fourth length away from the left-right ends of the absorbent body toward the center, to the left-right ends, and in the longitudinal direction, it is provided in a range where the ventral joint is located, according to any one of embodiments 1 to 12.

[0036] According to the pant-type absorbent article of embodiment 13, in addition to the first non-joint portion, a fourth non-joint portion is provided on both the left and right sides of the area where the ventral joint portion is located, so that after putting on the pant-type absorbent article, the shape and position of the absorbent body can be adjusted by holding the fourth non-joint portion with the hand.

[0037] ===Implementation Method=== The following describes the pant-type absorbent article 1 according to an embodiment of the present invention. The pant-type absorbent article 1 according to this embodiment will be described as a shorts-type sanitary napkin, etc., but the pant-type absorbent article 1 may also be a pant-type disposable diaper.

[0038] <Basic composition of absorbent pant-type item 1> Figure 1 is a front view of the absorbent pant-type garment 1, seen from the ventral side. Figure 2 is a top view of the absorbent pant-type garment 1, unfolded and stretched, seen from the skin side. Figure 3A is a schematic cross-sectional view of Figure 2 at the first center line CL1, and Figure 3B is a schematic cross-sectional view of Figure 2 at the second center line CC1.

[0039] In the following explanation, the absorbent pant-type article 1 will also be simply referred to as "absorbent article 1". Furthermore, the first center line CL1 shown in Figure 2 is a line extending in the width direction (described later) at the center point that divides the product (absorbent pant-type article 1) in the longitudinal direction (described later), and the second center line CC1 is a line extending in the longitudinal direction at the center point that divides the product (absorbent pant-type article 1) in the width direction.

[0040] The unfolded state of the absorbent pant-type article 1 is the state in which the pair of side joints 2 provided on both sides of the absorbent pant-type article 1 are separated and the absorbent pant-type article 1 is opened and unfolded flat. The stretched state of the absorbent pant-type article 1 is the state in which the absorbent pant-type article 1 is stretched to the extent that the wrinkles of the absorbent pant-type article 1 are no longer visible. Specifically, this is the state in which the absorbent pant-type article 1 is stretched until the dimensions of each component that makes up the absorbent pant-type article 1 match or are close to the dimensions of the individual component.

[0041] As shown in Figure 1, the pant-type absorbent article 1 has mutually orthogonal vertical, horizontal, and front-to-back directions (directions that penetrate the paper in Figure 1), and has a waist opening BH and a pair of leg openings LH. The upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the wearer's crotch side. The front side in the front-to-back direction corresponds to the wearer's abdominal side, and the back side corresponds to the wearer's back side.

[0042] Furthermore, in the unfolded and extended state of the pant-type absorbent article 1 shown in Figure 2, the pant-type absorbent article 1 has longitudinal, widthwise, and thicknesswise directions (directions that penetrate the paper in Figure 2) that intersect with each other. In Figure 2, the pant-type absorbent article 1 is unfolded and extended so that the longitudinal direction of the absorbent body 10 (described later) of the pant-type absorbent article 1 is aligned with the vertical direction of the pant-type absorbent article 1, and the widthwise direction of the absorbent body 10 is aligned with the left-right direction of the pant-type absorbent article 1. Therefore, the longitudinal direction of the pant-type absorbent article 1 in the unfolded state of Figure 2 is the same direction as the vertical direction of the pant-type absorbent article 1 in the pant-type state of Figure 1. Also, the widthwise direction of the pant-type absorbent article 1 in the unfolded state of Figure 2 is the same direction as the left-right direction of the pant-type absorbent article 1 in the pant-type state of Figure 1. And, one side of the longitudinal direction corresponds to the ventral side (front side), and the other side corresponds to the dorsal side (back side). Furthermore, as shown in Figures 3A and 3B, the direction in which the materials constituting the pant-type absorbent article 1 are layered is defined as the thickness direction. In the thickness direction, the side that comes into contact with the wearer's skin is defined as the skin side, and the opposite side is defined as the non-skin side.

[0043] The absorbent pants-type article 1 is a so-called three-piece type absorbent pants-type article comprising at least three components: an absorbent body 10, an abdominal waist portion 20 that covers the wearer's abdominal side, and a back waist portion 30 that is a separate component from the abdominal waist portion 20 and covers the wearer's back. In the following description, the abdominal waist portion 20 and the back waist portion 30 will be collectively referred to as waist portions 20 and 30.

[0044] As shown in Figure 2, in the unfolded 3-piece type pants-type absorbent article 1, the ventral waist portion 20 and the dorsal waist portion 30 are positioned side by side with a gap between them in the longitudinal direction, and the absorbent body 10 is stretched between them along the longitudinal direction. As a result, a portion of the absorbent body 10 partitions the pair of leg openings LH shown in Figure 1. Furthermore, the ventral end of the absorbent body 10 in the longitudinal direction is joined and fixed to the skin side of the ventral waist portion 20 at the ventral joint 60, and the dorsal end of the absorbent body 10 in the longitudinal direction is joined and fixed to the skin side of the dorsal waist portion 30 at the dorsal joint 70. The ventral joint 60 and the dorsal joint 70 are made of an adhesive such as a hot melt adhesive, and these adhesives are applied over almost the entire area of ​​the ventral joint 60 and the dorsal joint 70 shown in Figure 2 (the area shown by the dashed line in Figure 2). In the following explanation, the ventral joint 60 and the dorsal joint 70 will be collectively referred to as joints 60 and 70.

[0045] From the unfolded state of the pant-type absorbent article 1 shown in Figure 2, the absorbent body 10 is folded in half lengthwise, and the opposing ventral waist portion 20 and dorsal waist portion 30 are connected on both sides in the width direction by a pair of side joints 2, resulting in the pant-type absorbent article 1 shown in Figure 1. In other words, the ventral waist portion 20 and the dorsal waist portion 30 are joined in an annular manner by a pair of side joints 2. Examples of joining methods using the side joints 2 include heat welding, ultrasonic welding, and adhesive joining methods.

[0046] (Absorbent body 10) As shown in Figures 3A and 3B, the absorbent body 10 includes an absorbent core 11 that absorbs and retains excretory fluids such as menstrual blood and urine, a liquid-permeable surface sheet 12 (e.g., nonwoven fabric or perforated film) positioned on the skin side of the absorbent core 11, a liquid-impermeable back film 13 (e.g., resin film) positioned on the non-skin side of the absorbent core 11, and an outer sheet 14 (e.g., hydrophobic nonwoven fabric). The outer sheet 14 is positioned on the non-skin side of the back film 13 and forms a leak-proof wall portion 3, which will be described later. The outer surface of the absorbent core 11 is covered by the skin-side sheet 15f and the non-skin-side sheet 15b.

[0047] The absorbent core 11 is a molded body formed from a predetermined liquid-absorbing material into a rectangular shape in plan view, as an example of a predetermined shape (see Figure 2). Examples of liquid-absorbing materials include water-retaining fibers and liquid-absorbing granular materials such as superabsorbent polymers (so-called SAP). The water-retaining fibers are not particularly limited as long as they have the property of absorbing and retaining moisture, and examples include cellulose fibers (e.g., pulp fibers, non-wood fibers such as cotton and hemp, regenerated fibers such as rayon, etc.). Furthermore, since the shape of the absorbent core 11 is rectangular in plan view, the length of the absorbent core 11 in the width direction is constant in at least the central region of the region divided into three equal parts in the longitudinal direction. However, the shape of the absorbent core 11 is not limited to the rectangular shape shown in Figure 2. For example, the absorbent core 11 may be roughly hourglass-shaped, with the width narrowed between the ventral (front) end and the dorsal (rear) end in the longitudinal direction.

[0048] In this embodiment, as shown in Figure 3A, an adjacent skin-side sheet 15f is provided on the skin-side of the absorbent core 11 in the thickness direction, and an adjacent non-skin-side sheet 15b is provided on the non-skin-side of the absorbent core 11 in the thickness direction. The skin-side sheet 15f is made of a sheet material such as tissue paper or a hydrophilic nonwoven fabric, and an adhesive such as a hot melt adhesive (skin-side sheet joint 15fa) is applied to almost the entire surface of the non-skin side. On the other hand, the non-skin-side sheet 15b is made of a sheet material such as a hydrophobic SB nonwoven fabric, and an adhesive such as a hot melt adhesive (non-skin-side sheet joint 15ba) is applied to almost the entire surface of the skin-side side. The absorbent core 11 is then covered by being sandwiched from both sides in the thickness direction by the skin-side sheet 15f and the non-skin-side sheet 15b, thereby stably maintaining the shape of the absorbent core 11.

[0049] Furthermore, as shown in Figures 2 and 3A, a pair of leak-proof walls 3 are provided on both sides of the absorbent body 10 in the width direction (left-right direction), along the longitudinal direction of the absorbent body 10. These pair of leak-proof walls 3 are integrally formed with the absorbent body 10 by folding the outer sheet 14 that constitutes the outer casing of the absorbent body 10. Specifically, the outer sheet 14 covers the non-skin side of the back film 13, and portions extending outward in the width direction are folded at multiple points to be provided on both sides in the width direction on the skin side of the surface sheet 12, thereby forming the leak-proof walls 3. A leak-proof elastic member 16 (e.g., elastic thread) is attached to the leak-proof walls 3 in a stretched state along the longitudinal direction. Note that in Figure 2, only the portion of the leak-proof elastic member 16 that exhibits elasticity, in other words, the portion that can stretch along the longitudinal direction together with the absorbent body 10 (absorbent core 11) (the so-called "effective length" portion) is shown. When the pant-type absorbent garment 1 is worn, the leak-proof wall portion 3 stands up on the wearer's skin side based on the elasticity of the leak-proof wall elastic member 16 in the longitudinal direction. By having these leak-proof wall portions 3 stand up on the skin side on both sides of the absorbent body 10, so-called "lateral leakage," where excretory fluid absorbed by the absorbent core 11 leaks out to the left or right, is more easily suppressed.

[0050] Furthermore, as shown in Figure 2, at both ends 46 in the longitudinal direction of the leak-proof wall section 3, leak-proof wall end fixing sections 41 and 42 are provided to fix the leak-proof wall section 3 to the skin side surface of the surface sheet 12. The leak-proof wall end fixing sections 41 and 42 are formed with an adhesive such as a hot melt adhesive, and in Figure 2, the ventral ends of both ends 46 of the leak-proof wall section 3 are fixed to the skin side surface of the surface sheet 12 via a pair of leak-proof wall end fixing sections 41. Similarly, the dorsal ends of both ends 46 of the leak-proof wall section 3 are fixed to the skin side surface of the surface sheet 12 via a pair of leak-proof wall end fixing sections 42. In addition, at the intermediate section 47, which is spaced longitudinally away from both ends 46 where the leak-proof wall end fixing sections 41 and 42 are provided, a leak-proof wall intermediate fixing section 43 is provided to fix the leak-proof wall section 3 to the skin side surface of the surface sheet 12. In Figure 2, the intermediate portion 47 of the leak-proof wall 3 in the longitudinal direction is fixed to the surface side of the surface sheet 12 via a pair of leak-proof wall intermediate fixing portions 43.

[0051] When the pant-type absorbent article 1 is worn, the portion of the leak-proof wall 3 that is not fixed to the surface sheet 12 between the ends 46 and the middle section 47 in the longitudinal direction separates from the skin side of the surface sheet 12 and stands up on the skin side, making close contact with the wearer's groin. The portion of the leak-proof wall 3 that is not fixed to the surface sheet 12 between the ends 46 and the middle section 47 in the longitudinal direction is also referred to as the "standing portion 48". The standing of the leak-proof wall 3 is suppressed more at the ends 46 where the leak-proof wall end fixing portions 41 and 42 are provided, and at the middle section 47 where the leak-proof wall middle fixing portion 43 is provided, than at the standing portion 48. That is, the maximum height of the standing portion at both ends 46 and the maximum height of the standing portion at the middle section 47 of the leak-proof wall 3 is smaller than the maximum height of the standing portion 48 of the leak-proof wall 3.

[0052] Furthermore, when the absorbent body 10 is in the extended state shown in Figure 2, the leak-proof wall end fixing parts 41, 42 and the leak-proof wall intermediate fixing part 43 are positioned outside the outermost edge of the absorbent core 11 in the width direction (left-right direction). In other words, when viewed in the thickness direction, the leak-proof wall end fixing parts 41, 42 and the leak-proof wall intermediate fixing part 43 are positioned in a region that does not overlap with the highly rigid absorbent core 11. To put it another way, the leak-proof wall end fixing parts 41, 42 and the leak-proof wall intermediate fixing part 43 are positioned in a portion of the absorbent body 10 that is thinner than the portion where the absorbent core 11 is located. As described above, when the pant-type absorbent article 1 is worn, the leak-proof wall part 3 stands up on the skin side at the upright part 48. That is, both ends in the longitudinal direction of the upright part 48 become the starting points for the uprighting of the leak-proof wall part 3. Because the leak-proof wall end fixing parts 41, 42 and the leak-proof wall intermediate fixing part 43, where the starting point for standing is located, are positioned in an area outside the absorbent core 11 and with lower rigidity, the movement of the leak-proof wall part 3 when standing up is less likely to be interfered with. As a result, when wearing the pants-type absorbent item 1, the leak-proof wall part 3 is more likely to stand up on the skin side, and it fits more easily to the wearer's groin area.

[0053] As shown in Figure 2, the absorbent body 10 has a longitudinally stretchable crotch elastic member 17 (e.g., elastic thread) in the center of the width direction (left-right direction) and on the non-skin side in the thickness direction relative to the absorbent core 11. Specifically, the crotch elastic member 17 in this embodiment is joined to the non-skin side sheet 15b, which covers the absorbent core 11 from the non-skin side, and the back film 13, which is positioned on the non-skin side in the thickness direction relative to the non-skin side relative to the non-skin side sheet 15b, via an adhesive such as a hot melt adhesive. Multiple crotch elastic members 17 (three in Figure 2) are provided at intervals in the width direction (left-right direction) when stretched along the longitudinal direction, and the elasticity of the crotch elastic member 17 exerts a force that pushes the absorbent core 11 from the non-skin side towards the skin side. This improves the fit of the absorbent body 10 (absorbent core 11) in the crotch area of ​​the wearer and makes it less likely for excretory fluids such as menstrual blood and urine to leak. In Figure 2, only the portion of each crotch elastic member 17 that exhibits elasticity, in other words, the portion that can stretch along the longitudinal direction together with the absorbent body 10 (absorbent core 11) (the so-called "effective length" portion), is shown.

[0054] (Waist circumference 20, 30) As shown in Figure 3B, the ventral torso section 20 includes a torso skin-side sheet 21, a torso non-skin-side sheet 22 (e.g., nonwoven fabric) laminated on the non-skin side of the torso skin-side sheet 21, and a plurality of ventral torso elastic members 23, 24 (e.g., elastic thread) that stretch in the left-right direction. Similarly, the dorsal torso section 30 includes a torso skin-side sheet 31, a torso non-skin-side sheet 32 ​​(e.g., nonwoven fabric) laminated on the non-skin side of the torso skin-side sheet 31, and a plurality of dorsal torso elastic members 33, 34 (e.g., elastic thread) that stretch in the left-right direction. The plurality of ventral torso elastic members 23, 24 are arranged in a vertical (longitudinal) direction between the torso skin-side sheet 21 and the torso non-skin-side sheet 22, and are attached in a stretched state in the left-right direction. Similarly, the multiple dorsal torso elastic members 33, 34 are arranged in a vertical (longitudinal) direction between the torso skin-side sheet 31 and the torso non-skin-side sheet 32, and are attached in a stretched state in the left-right direction. Due to the elasticity of the ventral torso elastic members 23, 24, the ventral torso portion 20 fits the wearer's abdominal torso, and due to the elasticity of the dorsal torso elastic members 33, 34, the dorsal torso portion 30 fits the wearer's back torso.

[0055] Furthermore, a cover sheet (not shown) may be provided to cover the upper end of the absorbent body 10 (the ventral and dorsal ends of the absorbent body 10 in the longitudinal direction of Figure 3B) from the skin side. Providing a cover sheet can prevent the upper edge of the absorbent body 10 from digging into the wearer's skin and can also prevent the absorbent body 10 from opening up.

[0056] Furthermore, as shown in the plan view of Figure 2, the planar shapes of the ventral waist portion 20 and the dorsal waist portion 30 are different when unfolded and extended. The ventral waist portion 20 has a length in the longitudinal direction (vertical direction) that is approximately the same as the side joint portion 2, and is a long rectangle in the width direction. On the other hand, the dorsal waist portion 30 has a rectangular waist side portion 30A that overlaps with the ventral waist portion 20, and further, a waist extension portion 30B located ventrally (below the side joint portion 2) from the ventral end in the longitudinal direction of the side joint portion 2, with the width in the width direction (left-right direction) narrowing from the dorsal side in the longitudinal direction to the ventral side (from the upper side to the lower side in the vertical direction). This waist extension portion 30B functions as a buttock cover that covers the wearer's buttocks on the dorsal side (rear side) when the pant-type absorbent article 1 is worn.

[0057] Here, the waist side portion 30A of the dorsal waist portion 30 has a rectangular shape that overlaps with the ventral waist portion 20, so the longitudinal length of the waist side portion 30A is approximately the same as that of the ventral waist portion 20. Since the dorsal waist portion 30 has a waist extension portion 30B in addition to the waist side portion 30A, the longitudinal length of the dorsal waist portion 30 is greater than the longitudinal length of the ventral waist portion 20 by the length of the waist extension portion 30B. Therefore, as shown in Figure 2, at least at both ends of the absorbent body 10 in the left-right direction, the vertical length 20L of the ventral waist portion 20 (length between the ventral end 20ef and the dorsal end 20eb) is smaller than the vertical length 30L of the dorsal waist portion 30 (length between the ventral end 30ef and the dorsal end 30eb) (20L < 30L). This reduces the area of ​​the ventral torso section 20 that covers the wearer's legs, making it easier for the wearer to move their legs, while increasing the area of ​​the dorsal torso section 30 that covers the wearer's buttocks.

[0058] Furthermore, the waist extension portion 30B is provided with a back extension elastic member 35 (for example, a thread elastic) that runs in the left-right direction. Multiple back extension elastic members 35 are provided in the waist extension portion 30B at predetermined intervals in the longitudinal direction (up-down direction), as shown in Figure 2. The back extension elastic members 35 are also attached in an extended state between the torso skin-side sheet 31 and the torso non-skin-side sheet 32. The elasticity of the back extension elastic members 35 makes it easier for the waist extension portion 30B of the back torso portion 30 to fit the wearer's buttocks and prevents it from rolling up from the buttocks. In Figure 2, three thread elastics are shown as an example of the back extension elastic members 35, but the number of thread elastics is not particularly limited.

[0059] The basic configuration of the absorbent pant-type article 1 has been described above, but the configuration of the absorbent pant-type article 1 described above is just one example and is not limited thereto. For example, a liquid-permeable intermediate sheet (second sheet) may be provided between the surface sheet 12 and the skin-side sheet 15f. Also, the back waist portion 30 may not have a waist extension portion 30B or a back extension elastic member 35, and may have the same planar shape as the ventral waist portion 20, or the ventral waist portion 20 may have a portion that extends towards the crotch. Furthermore, thread-like ventral waist elastic member 23 and back waist elastic member 33 may be provided at the upper end (waist portion) of the waist portions 20 and 30 to provide a secure fit, and below that, an elastic sheet may be provided instead of the thread-like ventral waist elastic member 24 and back waist elastic member 34. By placing an elastic sheet between the skin-facing torso sheet 21 (skin-facing torso sheet 31) and the non-skin-facing torso sheet 22 (non-skin-facing torso sheet 32), and intermittently joining the laminated sheets, the torso sections 20 and 30 become elastic, providing a soft, even fit to the wearer's torso.

[0060] <Unconnected area on the ventral side> As described above, the absorbent pants-type article 1 of this embodiment is a three-piece type absorbent pants-type article having an absorbent body 10, an abdominal waist portion 20, and a dorsal waist portion 30 which is a separate member from the abdominal waist portion 20, the abdominal end of the absorbent body 10 being joined to the abdominal waist portion 20 at the abdominal joint portion 60, and the dorsal end of the absorbent body 10 being joined to the dorsal waist portion 30 at the dorsal joint portion 70.

[0061] In this type of three-piece absorbent pant 1, the contact area between the waistband 20, 30 (ventral waistband 20 or dorsal waistband 30) and the absorbent body 10 is small. In particular, the contact area between the ventral waistband 20 and the absorbent body 10 is small, making it necessary to ensure coordination between the ventral waistband 20 and the absorbent body 10 when the wearer moves their body, such as when walking, and to ensure that the absorbent body 10 fits the body well. If the coordination between the ventral waistband 20 and the absorbent body 10 is poor, wrinkles and twists will occur in the absorbent body 10, reducing its fit to the body. Furthermore, if the wearer experiences discomfort due to such wrinkles and twists while wearing the absorbent pant 1, it is also necessary that this discomfort can be easily reduced.

[0062] Therefore, in the pant-type absorbent article 1 of this embodiment, a first non-joint portion 81 is provided in the overlapping portion between the ventral waist portion 20 and the absorbent body 10. By having a predetermined relationship with the first non-joint portion 81, it is possible to ensure the interlocking between the ventral waist portion 20 and the absorbent body 10, as well as the fit of the absorbent body 10 to the body, while also easily reducing discomfort when wearing the pant-type absorbent article 1. The outline of the first non-joint portion 81 will be described below with reference to the figures.

[0063] (Overview of the first non-jointed portion 81) Figure 4 is an enlarged plan view of the absorbent body 10 portion of the pant-type absorbent item 1 when unfolded and stretched, as viewed from the skin side. Figure 5 is an enlarged plan view of the ventral joint portion 60 portion of the pant-type absorbent item 1 when unfolded and stretched, as viewed from the skin side. Figure 6 is an explanatory diagram showing how the wearer adjusts the position of the absorbent body 10. Figure 7 is an enlarged plan view of the dorsal joint portion 70 portion of the pant-type absorbent item 1 when unfolded and stretched, as viewed from the skin side.

[0064] As shown in Figure 4, in the longitudinal direction of the unfolded and stretched pants-type absorbent article 1, a first non-joint portion 81 is provided where the ventral end of the absorbent body 10 is not joined to the ventral waist portion 20. Here, as shown in Figure 5, the ventral end 60ef of the ventral joint portion 60 is located ventrally further than the ventral end 11ef of the absorbent core 11, and as a result, the ventral joint portion 60 straddles the ventral end 11ef of the absorbent core 11. Therefore, the first non-joint portion 81, which is located ventrally further than the ventral joint portion 60, is located in a region with lower rigidity that is longitudinally outside the absorbent core 11.

[0065] As the first non-joint portion 81 is provided in this way, the wearer is more likely to experience discomfort when putting on the panty-type absorbent item 1 via the first non-joint portion 81. For example, when pulling up the panty-type absorbent item 1, friction occurs between the body and the ventral end of the absorbent body 10, causing the first non-joint portion 81, which is located in a less rigid area, to tilt towards the skin. In addition, after putting on the panty-type absorbent item 1, the wearer's pubic hair is more likely to get caught in the first non-joint portion 81, so discomfort can be experienced via the first non-joint portion 81 provided on the ventral end of the absorbent body 10 even immediately after putting on the panty-type absorbent item 1.

[0066] If a wearer experiences discomfort through the first non-joint portion 81, as shown in Figure 6, they can hold the first non-joint portion 81 with their hand after putting on the pants-type absorbent item 1, pull up the absorbent body 10, and adjust the shape and position of the absorbent body 10. Here, as described above, because the ventral joint portion 60 straddles the ventral end 11ef of the absorbent core 11 in the longitudinal direction, it becomes easier to pull up the absorbent core 11, which is the more rigid part of the absorbent body 10. By pulling up the absorbent body 10 and adjusting its shape and position, wrinkles and twists in the ventral portion of the absorbent body 10 can be eliminated, easily reducing discomfort when wearing the pants-type absorbent item 1 and improving comfort when wearing the pants-type absorbent item 1.

[0067] Furthermore, in the pant-type absorbent article 1 of this embodiment, the first non-joint portion 81 is provided within a predetermined range so that the wearer can easily hold the first non-joint portion 81 with their hand and pull up the absorbent body 10. Specifically, the first non-joint portion 81 has a predetermined length (first length 81LL) in the longitudinal direction that is sufficient for the wearer to hold the first non-joint portion 81 with their hand. That is, as shown in Figure 5, the first non-joint portion 81 is provided in the longitudinal direction from a predetermined position (here, the ventral end 60ef of the ventral joint portion 60) located a distance of the first length 81LL from the ventral end 10ef of the absorbent body 10 to the ventral end 10ef of the absorbent body 10. In addition, the first non-joint portion 81 is provided over the entire width direction (left-right direction) of the absorbent body 10, that is, from one end 10el to the other end 10er of the absorbent body 10.

[0068] Furthermore, in the pant-type absorbent article 1 of this embodiment, the area of ​​the ventral joint portion 60 is larger than the area of ​​the first non-joint portion 81. This allows the ventral waist portion 20 and the absorbent body 10 to be joined as broadly as possible, and even in a three-piece type pant-type absorbent article like this embodiment, it is possible to suppress a decrease in the interlocking between the ventral waist portion 20 and the absorbent body 10, and the fit of the absorbent body 10 to the body.

[0069] Based on the above, the pant-type absorbent article 1 of this embodiment achieves both the coordination between the abdominal waist portion 20 and the absorbent body 10, and the fit of the absorbent body 10 to the body, while also easily reducing discomfort when wearing the pant-type absorbent article 1.

[0070] Furthermore, as shown in Figure 3B above, the non-skin side sheet 22 of the ventral waist portion 20 has a folded portion 26. The folded portion 26 is the part that is folded back from the upper side (longitudinal direction) to the lower side at the upper end of the ventral waist portion 20. Also, the non-skin side sheet 32 ​​of the dorsal waist portion 30 has a folded portion 36. The folded portion 36 is the part that is folded back from the upper side (longitudinal direction) to the lower side at the upper end of the dorsal waist portion 30. The folded portion 26 does not cover the ventral end 10ef (upper end) of the absorbent body 10, but the folded portion 36 covers the dorsal end 10eb (upper end) of the absorbent body. In other words, in the pant-type absorbent article 1 of this embodiment, there is no member that covers the ventral end 10ef of the absorbent body 10, but there is a member that covers the dorsal end 10eb of the absorbent body 10 (in this case, the folded portion 36).

[0071] Thus, by not providing a member to cover the ventral end 10ef of the absorbent body 10, the first non-joint portion 81 located at the ventral end of the absorbent body 10 can be made to stand upright when the pant-type absorbent item 1 is worn, thereby suppressing leakage of excretory fluid. On the other hand, by providing a member to cover the dorsal end 10eb of the absorbent body, it is possible to prevent it from peeling off from the dorsal end (upper end) of the dorsal joint portion 70 due to friction when turning over in bed. However, a member to cover the ventral end 10ef of the absorbent body 10 may be provided (i.e., the folded portion 26 may cover the ventral end 10ef of the absorbent body 10), or a member to cover the dorsal end 10eb of the absorbent body 10 may not be provided.

[0072] (Details of the first non-jointed portion 81) In the pant-type absorbent article 1 of this embodiment, the longitudinal length 81LL of the first non-joint portion 81 shown in Figure 5 is greater than the average thickness of the absorbent body 10 in the area where the first non-joint portion 81 is provided (i.e., in the longitudinal direction, the range from the ventral end 60ef of the ventral joint portion 60 to the ventral end 10ef of the absorbent body 10, and in the width direction, the range from one end 10el to the other end 10er of the absorbent body 10). The average thickness of the absorbent body 10 is, for example, the average of the maximum thickness measured at three locations in the width direction of the absorbent body 10: the left end, the center, and the right end. A well-known method can be used to measure each of the maximum thicknesses of the absorbent body 10.

[0073] In this way, by ensuring a sufficient longitudinal length of the first non-joint portion 81, the wearer can easily grasp the first non-joint portion 81 with their hand, making it easier to adjust the shape and position of the absorbent body 10. Furthermore, as described above, the first non-joint portion 81 is provided in the area of ​​the absorbent body 10 where the absorbent core 11 is not provided, i.e., in the area with a thin thickness, thus making it easier to reduce discomfort caused by the first non-joint portion 81. However, the longitudinal length of the first non-joint portion 81 may be the same as or less than the average thickness of the absorbent body 10 in the area where the first non-joint portion 81 is provided.

[0074] Furthermore, as shown in Figure 5, on the second centerline CC1 (center in the left-right direction) of the pant-type absorbent article 1, the longitudinal length 81LL of the first non-joint portion 81 is greater than the length 10LL from the ventral end 11ef of the absorbent core 11 to the ventral end 60ef of the ventral joint portion 60. By ensuring a sufficient longitudinal length of the first non-joint portion 81 in this way, the wearer can easily grasp the first non-joint portion 81 with their hand, and it becomes easier to adjust the shape and position of the absorbent body 10. However, the longitudinal length 81LL of the first non-joint portion 81 may be the same size as or smaller than the length 10LL.

[0075] Furthermore, as shown in Figure 5, the first non-joint portion 81 overlaps with at least a part of the ventral waist elastic member 24A of the ventral waist elastic member 24. Due to the elasticity of the ventral waist elastic member 24A, the first non-joint portion 81 can be pressed against the wearer's body after adjusting the shape and position of the absorbent body 10, thereby easily reducing discomfort when wearing the pants-type absorbent article 1 and improving the fit of the absorbent body 10 to the body after the reduction of discomfort. However, the first non-joint portion 81 does not have to overlap with any of the ventral waist elastic members 24.

[0076] In the pant-type absorbent article 1 of this embodiment, as shown in Figures 5 and 7, discontinuous portions (discontinuous portions 24a and 34a, described later) are provided in at least a portion of the area where the ventral waist portion 20 or the dorsal waist portion 30 and the absorbent body 10 overlap in the thickness direction, in order to suppress shrinkage in the width direction of the absorbent core 11, in particular. These discontinuous portions are provided in at least the central part of the width direction of the pant-type absorbent article 1, where the ventral waist elastic member 24 (dorsal waist elastic member 34) is discontinuous. Note that the arrangement of the discontinuous portions 24a and 34a is not limited to the positions shown in Figures 5 and 7, but is sufficient as long as they are provided in at least the central part in the width direction of the pant-type absorbent article 1 to suppress shrinkage in the width direction of the absorbent core 11. When positioning the ventral torso elastic member 24 (dorsal torso elastic member 34) between the torso skin-side sheet 21 (torso skin-side sheet 31) and the torso non-skin-side sheet 22 (torso non-skin-side sheet 32), the ventral torso elastic member 24 (dorsal torso elastic member 34) is not fixed with adhesive in the discontinuous portion 24a (discontinuous portion 34a), but is cut in the discontinuous portion 24a (discontinuous portion 34a). This allows the ventral torso elastic member 24 (dorsal torso elastic member 34) to retain its elasticity in the portion other than the discontinuous portion 24a (discontinuous portion 34a) (i.e., the continuous portion 24b (continuous portion 34b) described later), while preventing the discontinuous portion 24a (discontinuous portion 34a) from expanding or contracting in the width direction.

[0077] Furthermore, the method for forming the discontinuous portion 24a (discontinuous portion 34a) is not limited to the case described above. For example, even in the portion that becomes the discontinuous portion 24a (discontinuous portion 34a), the ventral girth elastic member 24 (dorsal girth elastic member 34) may be fixed with adhesive, and the discontinuous portion 24a (discontinuous portion 34a) may be formed by cutting the ventral girth elastic member 24 (dorsal girth elastic member 34) at multiple locations by pressing or the like (i.e., cutting it into small pieces) to eliminate its elasticity.

[0078] In the pant-type absorbent article 1 of this embodiment, as shown in Figure 5, the ventral waist elastic member 24 has a discontinuous portion 24a that is discontinuous in the left-right direction, and a pair of continuous portions 24b that are continuous in the left-right direction on both sides of the discontinuous portion 24a. At least a portion of the ventral discontinuous portion 24b of the ventral waist elastic member 24 overlaps with the absorbent core 11. This prevents the absorbent core 11 from contracting due to the elasticity of the ventral waist elastic member 24. In addition, the elasticity of the ventral continuous portions 24a located on both the left and right sides of the ventral discontinuous portion 24b of the ventral waist elastic member 24 pulls the absorbent body 10 outward on both sides, thereby preventing the absorbent body 10 from widening. However, the ventral discontinuous portion 24b of the ventral waist elastic member 24 does not have to overlap with the absorbent core 11.

[0079] Furthermore, as shown in Figure 7, the dorsal torso elastic member 34 positioned between the torso skin-side sheet 31 and the torso non-skin-side sheet 32 ​​has a discontinuous portion 34a that is discontinuous in the left-right direction, and a pair of continuous portions 34b that are continuous in the left-right direction on both sides of the discontinuous portion 34a. Then, as shown in Figure 5, the inner end 24ei in the left-right direction of the ventral continuous portion 24b is positioned inside the left-right ends of the absorbent core 11, and as shown in Figure 7, the inner end 34ei in the left-right direction of the dorsal continuous portion 34b is positioned outside the left-right ends of the absorbent core 11.

[0080] Incidentally, the human body has an uneven shape on its ventral side, such as a concave shape at the base of the legs and inguinal region, but a convex shape where the pubic bone is located, and it is necessary to fit the absorbent body 10 to these uneven surfaces. For this reason, on the ventral side of the absorbent body 10, the inner ends 24ei in the left-right direction of the ventral continuous portion 24b are positioned inward from both ends of the absorbent core 11 in the left-right direction, so that the elasticity of the ventral continuous portion 24b allows the absorbent core 11 to fit along the contours of the body. On the other hand, the ventral side of the body only has a convex shape in the buttocks, and the degree of unevenness of the body is smaller than on the ventral side of the body. For this reason, it is more important to suppress wrinkles and widthening of the absorbent core 11 than to fit the absorbent core 11 to the contours of the body. Therefore, on the dorsal side of the absorbent body 10, the inner end 34ei in the left-right direction of the dorsal continuous portion 34b is positioned outside the left-right ends of the absorbent core 11, thereby suppressing wrinkles and widthening of the absorbent core 11. However, the inner end 24ei in the left-right direction of the ventral continuous portion 24b may be positioned outside the left-right ends of the absorbent core 11, or the inner end 34ei in the left-right direction of the dorsal continuous portion 34b may be positioned inside the left-right ends of the absorbent core 11.

[0081] Furthermore, due to the difference in shape between the ventral and dorsal sides of the body as described above, the arrangement of the crotch elastic member 17 also differs between the ventral and dorsal sides. This point will be described in detail below.

[0082] As shown in Figure 4 above, the crotch elastic member 17 is located dorsally to the first non-joint portion 81. This allows the wearer to adjust the shape and position of the absorbent body 10 by holding the first non-joint portion 81 with their hand, while simultaneously adjusting the position of the absorbent body 10 in the crotch area due to the elasticity of the crotch elastic member 17. However, a portion of the crotch elastic member 17 may be located ventrally to the first non-joint portion 81.

[0083] Furthermore, as shown in Figure 4 above, the ventral end 17ef of the crotch elastic member 17 does not overlap with the ventral waist portion 20. This suppresses longitudinal contraction of the ventral waist portion 20 when the wearer adjusts the shape and position of the absorbent body 10 by holding the first non-joint portion 81 with their hand. Also, the dorsal end 17eb of the crotch elastic member 17 overlaps with the dorsal waist portion 30. This allows the elasticity of the crotch elastic member 17 to act, allowing the absorbent body 10 to fit into the groove of the wearer's buttocks. However, the ventral end 17ef of the crotch elastic member 17 may overlap with the ventral waist portion 20, and the dorsal end 17eb of the crotch elastic member 17 does not have to overlap with the dorsal waist portion 30.

[0084] (Second non-joint part 82) The first non-joint portion 81 described above is provided at the ventral end of the overlapping portion between the ventral waist portion 20 and the absorbent body 10. In the pant-type absorbent article 1 of this embodiment, a non-joint portion (second non-joint portion 82) may also be provided at the dorsal end of the overlapping portion (i.e., the dorsal end of the ventral waist portion 20).

[0085] As shown in Figures 4 and 5, in the longitudinal direction of the unfolded and stretched pants-type absorbent article 1, a second non-jointed portion 82 is provided in the overlapping portion between the ventral waist portion 20 and the absorbent body 10, where the dorsal end of the ventral waist portion 20 is not joined to the absorbent body 10. The second non-jointed portion 82 has a predetermined length (second length 82LL) in the longitudinal direction.

[0086] As shown in Figure 5, the second non-joint portion 82 is provided in the longitudinal direction from a predetermined position (here, the dorsal end 60eb of the ventral joint portion 60) located ventrally from the dorsal end 20ef of the ventral girth portion 20 to the dorsal end 20eb of the ventral girth portion 20. Furthermore, the second non-joint portion 82 is provided over the entire width direction (left-right direction) of the absorbent body 10, that is, from one end 10el to the other end 10er of the absorbent body 10. Also, in the longitudinal direction, the length 81LL of the first non-joint portion 81 is greater than the second length 82LL of the second non-joint portion 82.

[0087] The provision of a second non-joint portion 82 at the dorsal end of the ventral waist portion 20, which is not joined to the absorbent body 10, prevents the adhesive of the ventral joint portion 60 from seeping out from the dorsal end 20eb of the ventral waist portion 20. Furthermore, since the second non-joint portion 82 does not necessarily need to have the function of being held by hand and pulled up the absorbent body 10 portion, the second length 82LL of the second non-joint portion 82 can be made smaller than the length 81LL of the first non-joint portion 81 in the longitudinal direction. Conversely, by making the length 81LL of the first non-joint portion 81 longer than the second length 82LL of the second non-joint portion 82 in the longitudinal direction, the length 81LL of the first non-joint portion 81 can be sufficiently secured, making it easier for the wearer to grasp the length 81LL of the first non-joint portion 81 by hand and to adjust the shape and position of the absorbent body 10. Furthermore, since the entire first non-joint portion 81 is covered by the ventral girth portion 20 from the outside, even if the length 81LL of the first non-joint portion 81 is made longer than the second length 82LL of the second non-joint portion 82 in the longitudinal direction, the impact on the appearance can be suppressed. Conversely, by shortening the second length 82L of the second non-joint portion 82, the impact on the appearance by the ventral girth portion 20 can also be suppressed.

[0088] <Dorsal non-jointed area> The above describes the non-jointed portions (first non-jointed portion 81 and second non-jointed portion 82) provided on the ventral side, but similar non-jointed portions may also be provided in the overlapping portion between the dorsal girth portion 30 and the absorbent body 10.

[0089] As shown in Figures 4 and 7, in the longitudinal direction, a third non-joint portion 83 is provided where the dorsal end of the absorbent body 10 is not joined to the dorsal body circumference portion 30. Here, as shown in Figure 7, the dorsal end 70eb of the dorsal joint portion 70 is located dorsal to the dorsal end 11eb of the absorbent core 11, and the dorsal joint portion 70 straddles the dorsal end 11eb of the absorbent core 11. For this reason, the third non-joint portion 83, which is located dorsal to the dorsal joint portion 70, is located outside the absorbent core 11 in a region with lower rigidity.

[0090] Furthermore, the third non-joint portion 83 has a predetermined length (third length 83LL) in the longitudinal direction. That is, as shown in Figure 7, the third non-joint portion 83 is provided in the longitudinal direction from a predetermined position (here, the back end 70eb of the back joint portion 70) located a distance of the third length 83LL from the back end 10eb of the absorbent body 10 to the back end 10eb of the absorbent body 10. In addition, the third non-joint portion 83 is provided over the entire width direction (left-right direction), that is, from one end 10el to the other end 10er of the absorbent body 10.

[0091] Furthermore, the third non-joint portion 83 does not necessarily need to have the function of being held by hand and pulled up the absorbent body portion 10. Therefore, in the pants-type absorbent article 1 of this embodiment, the length 83LL of the third non-joint portion 83 is smaller than the length 81LL of the first non-joint portion 81. By shortening the longitudinal length of the third non-joint portion 83 provided at the back end of the absorbent body 10, discomfort for the wearer can be reduced. However, in the longitudinal direction, the length 83LL of the third non-joint portion 83 may be the same as or greater than the length 81LL of the first non-joint portion 81.

[0092] <Non-jointed areas on both sides in the width direction> The first non-joint portion 81 and the second non-joint portion 82 described above were provided on both sides in the longitudinal direction of the ventral joint portion 60. However, non-joint portions (fourth non-joint portion 84) may also be provided on both sides in the width direction of the ventral joint portion 60.

[0093] As shown in Figure 5, in the width direction (left-right direction), the ventral joint portion 60 straddles both ends of the absorbent core 11. Furthermore, both ends of the absorbent body 10 in the width direction are provided with fourth non-joint portions 84 that are not joined to the ventral girth portion 20. Each of the fourth non-joint portions 84 at both ends in the width direction has a predetermined length (fourth length 84LL) in the width direction. Each of the fourth non-joint portions 84 at both ends in the width direction is provided in a range from a predetermined position in the width direction, located at a distance of the fourth length 84LL from both ends of the absorbent body 10 in the width direction toward the center, to both ends in the width direction, and extends over the range in the longitudinal direction where the ventral joint portion 60 is located.

[0094] Thus, by providing fourth non-joint portions 84 on both sides in the width direction (left-right direction) of the area where the ventral joint portion 60 is located, in addition to the first non-joint portion 81, it is also possible to adjust the shape and position of the absorbent body 10 by holding the fourth non-joint portion 84 with your hand after putting on the pants-type absorbent article 1.

[0095] <Relationship between the first non-jointed portion 81 and the crease> Figure 8A is an explanatory diagram showing an example of a pant-type absorbent article 1 in its packaged state, and Figure 8B is an explanatory diagram showing a cross-section of the pant-type absorbent article 1 in its packaged state.

[0096] In its packaged state, the absorbent pant-type article 1 is folded in half along the fold line 4 shown in Figure 8A, which runs in the left-right direction. In this embodiment, the absorbent pant-type article 1 ensures that discomfort when wearing the article is easily reduced by aligning the fold crease and the first non-jointed portion 81 in a predetermined positional relationship.

[0097] As shown in Figure 8B, when the absorbent pant-type article 1 is viewed in the thickness direction, the fold line portion 4 has a fold line axis 4X located at the end of the absorbent pant-type article 1. The crease of the absorbent pant-type article 1 when folded in half is formed around the fold line axis 4A. Furthermore, when the absorbent pant-type article 1 is unfolded and stretched, the first non-joint portion 81 does not overlap with the fold line axis 4A. This makes it possible to suppress the formation of a crease in the first non-joint portion 81, and thus makes it possible to suppress the difficulty in reducing discomfort caused by the crease.

[0098] <Other> As shown in Figure 4, on the ventral side of the pant-type absorbent article 1, the ventral waist portion 20 and the absorbent body 10 are not joined, with the ventral joint portion 60 surrounded by the first non-joint portion 81, the second non-joint portion 82, and the fourth non-joint portions 84 on both sides in the width direction described above. However, the second non-joint portion 82 and the fourth non-joint portions 84 on both sides in the width direction may be omitted, and only the first non-joint portion 81 may be provided.

[0099] Similarly, the third non-joint portion 83 described above, the fifth non-joint portion 85 shown in Figure 4, and the sixth non-joint portions 86 on both sides in the width direction provide non-joint portions that surround the dorsal joint portion 70, where the dorsal body portion 30 and the absorbent body 10 are not joined. However, it is not necessary for at least one of the third non-joint portion 83, the fifth non-joint portion 85, and the sixth non-joint portions 86 on both sides in the width direction to be provided.

[0100] ===Other=== The embodiments described above are provided to facilitate understanding of the present invention and are not intended to limit its interpretation. The present invention may be modified and improved without departing from its spirit, and it goes without saying that equivalents thereof are included. [Explanation of symbols]

[0101] 1. Absorbent panty-type item, 2 Side joints, 3 Leakage prevention wall section, 4 Fold lines, 4X fold line axis 10 Absorbent body, 11 Absorbent core, 12 Surface sheet, 13 Back film, 14 Outer sheet, 15f Skin-side sheet, 15fa Skin-side sheet joint, 15b Non-skin side sheet, 15ba Non-skin side sheet joint, 16. Leak-proof wall elastic member, 17. Inseam elastic member, 18 Absorbent main body side compression area, 18a Compression part, 18b Peripheral part, 20. Ventral girth area, 21. Torso skin-side sheet, 22. Torso non-skin-side sheet, 23,24,24A Ventral circumferential elastic member, 24a discontinuous portion, 24b continuous portion, 26 Folded section, 28 Side compression area around the torso, 28a Compression area, 28b Peripheral area, 30. Dorsal girth area, 30A Waist side, 30B Waist extension, 31. Waistband skin-side sheet, 32. Waistband non-skin-side sheet, 33,34 Dorsal body elastic member, 34a Discontinuous portion, 34b Continuous portion, 35 Dorsal extension elastic member, 36 Folded portion, 41, 42 End fixing part of leak-proof wall, 43 Intermediate fixing part of leak-proof wall, 46 Both ends, 47 Middle section, 48 Upright section, 60 ventral junction, 70 dorsal junction, 80 nonjunction, 81 1st non-joint part, 82 2nd non-joint part, 83 3rd non-joint part, 84 4th non-joint part, 85 5th non-joint part, 86 6th non-joint part, BH (Waist opening), LH (Legs opening)

Claims

1. It has vertical and horizontal directions, It has a ventral waist portion, a dorsal waist portion which is a separate component from the ventral waist portion, and an absorbent body equipped with an absorbent core. The ventral end of the absorbent body is joined to the ventral torso portion at the ventral joint, The dorsal end of the absorbent body is joined to the dorsal body circumference at the dorsal joint, A pant-type absorbent article in which a part of the absorbent body partitions the leg opening, In a state where the absorbent pant-type absorbent article is unfolded and stretched so that the longitudinal direction of the absorbent core is aligned with the vertical direction of the pant-type absorbent article, In the longitudinal direction, the ventral joint spans the ventral end of the absorbent core. The ventral end of the absorbent body is provided with a first non-jointed portion that is not joined to the ventral waist portion. The first non-joint portion is, In the longitudinal direction, the range from a predetermined position a distance of a first length from the ventral end of the absorbent body toward the dorsal side to the ventral end, In the left-right direction, it is provided over a range from one end to the other end of the absorbent body, The absorbent pant-type article is characterized in that the area of ​​the ventral joint is larger than the area of ​​the first non-jointed portion.

2. The absorbent pant-type article according to claim 1, In the aforementioned unfolded and extended state, A pant-type absorbent article characterized in that the first length is greater than the average thickness of the absorbent body within the range.

3. The absorbent pant-type article according to claim 1, The ventral torso portion has an elastic ventral torso member that can expand and contract in the left-right direction, In the aforementioned unfolded and extended state, The pant-type absorbent article is characterized in that, when viewed in the thickness direction, the first non-jointed portion overlaps with at least a portion of the ventral waist elastic member.

4. The absorbent pant-type article according to claim 1, It has a crotch elastic member provided on the non-skin side of the absorbent core and which stretches along the longitudinal direction, In the aforementioned unfolded and extended state, The pants-type absorbent article is characterized in that, in the longitudinal direction, the crotch elastic member is located dorsally to the first non-joint portion.

5. The absorbent pant-type article according to claim 4, In the aforementioned unfolded and extended state, In the longitudinal direction, The ventral end of the crotch elastic member does not overlap with the ventral waist portion. A pant-type absorbent article characterized in that the dorsal end of the crotch elastic member overlaps with the dorsal waist portion.

6. The absorbent pant-type article according to claim 1, In the unfolded and extended state, a second non-jointed portion is provided, extending from a predetermined position a second length away from the dorsal end of the ventral torso portion toward the ventral side, to the dorsal end, where the dorsal end of the ventral torso portion is not joined to the absorbent body. A pant-type absorbent article characterized in that the first length is greater than the second length.

7. The absorbent pant-type article according to claim 1, The ventral torso portion has an elastic ventral torso member that can expand and contract in the left-right direction, The ventral waist elastic member has a ventral discontinuous portion that is discontinuous in the left-right direction, and a pair of ventral continuous portions that are continuous in the left-right direction on both sides of the ventral discontinuous portion. In the unfolded and stretched state, the pant-type absorbent article is characterized in that, when viewed in the thickness direction, at least a portion of the ventral discontinuous portion overlaps with the absorbent core.

8. The absorbent pant-type article according to claim 7, The aforementioned dorsal torso portion has a dorsal torso elastic member that is expandable and contractible in the left-right direction, The aforementioned dorsal body elastic member has a dorsal discontinuous portion that is discontinuous in the left-right direction, and a pair of dorsal continuous portions that are continuous in the left-right direction on both sides of the dorsal discontinuous portion. In the aforementioned unfolded and extended state, The inner end of the ventral continuous portion in the left-right direction is positioned inward of both ends of the absorbent core in the left-right direction. The pants-type absorbent article is characterized in that the inner end of the dorsal continuous portion in the left-right direction is positioned outside the left-right ends of the absorbent core.

9. The absorbent pant-type article according to claim 1, In the packaging state of the aforementioned pant-type absorbent article, it is packaged folded in half along the fold line that runs in the left-right direction, and when the packaged pant-type absorbent article is viewed in the thickness direction, the fold line has a fold axis located at the end of the pant-type absorbent article. In the unfolded and extended state, the first non-jointed portion is characterized in that it does not overlap with the fold line axis.

10. The absorbent pant-type article according to claim 1, When viewed in the thickness direction of the aforementioned pant-type absorbent article, A pant-type absorbent article characterized in that a member covering the ventral end of the absorbent body is not provided, but a member covering the dorsal end of the absorbent body is provided.

11. The absorbent pant-type article according to claim 1, The dorsal end of the absorbent body is provided with a third non-jointed portion that is not joined to the dorsal waist portion. In the aforementioned unfolded and extended state, The third non-joint portion is, In the longitudinal direction, the range from a predetermined position a third length away from the dorsal end of the absorbent body toward the ventral side to the dorsal end, In the left-right direction, it is provided over a range from one end to the other end of the absorbent body, A pant-type absorbent article characterized in that the third length is smaller than the first length.

12. The absorbent pant-type article according to claim 1, In the unfolded and stretched state, the first length of the pant-type absorbent article is greater than the length from the ventral end of the absorbent core to the ventral end of the ventral joint, at the center of the pant-type absorbent article in the left-right direction.

13. A pant-type absorbent article according to any one of claims 1 to 12, In the left-right direction, the ventral joint spans both ends of the absorbent core. The absorbent body is provided with a fourth non-jointed portion where both ends in the left-right direction are not joined to the ventral torso portion. In the aforementioned unfolded and extended state, Each of the fourth non-jointed portions at both ends in the left-right direction is In the left-right direction, within the range from a predetermined position a fourth length away from both ends of the absorbent body in the left-right direction toward the center, to both ends in the left-right direction, A pant-type absorbent article characterized in that it is provided over the range in which the ventral joint portion is located in the longitudinal direction.

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