JP6226910B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article.

  Conventionally, it has an absorptive body that absorbs excrement such as urine, and a waist belt that is joined to both ends of the absorptive body in the longitudinal direction and connects the front and rear waist regions, and a waist opening (trunk opening) and a pair of leg openings A pants-type absorbent article in which (leg opening) is formed is known. For example, in Patent Document 1, the longitudinal direction of the absorbent main body is aligned with the longitudinal direction of the waist belt, both are arranged, a part of the waist belt is cut out to provide a leg opening, and the longitudinal direction of the absorbent main body A pants-type absorbent article is disclosed in which an absorbent main body and a waist belt are joined by joints from both ends in the direction toward the leg opening.

Japanese National Patent Publication No. 8-507699

  In the pant-type absorbent article described in Patent Document 1, a leg opening is formed at the center in the longitudinal direction of the absorbent main body. That is, when the wearer wears the absorbent article, the leg opening is disposed at an intermediate position between the abdomen and the back. However, since the shape of the human body is different between the ventral side and the dorsal side, and the movement of the legs is usually larger on the ventral side than the dorsal side, an absorbent article that is actually formed into a pants shape is used. When worn, the absorbent article did not match the shape of the body, making it difficult to obtain a good fit. For example, the leg opening on the ventral side (front side) can easily interfere with the movement of the legs, and the leg opening on the back side (rear side) can reach the wearer's buttocks to sufficiently cover the wearer's buttocks. There were problems such as being unable to do so. In addition, since the leg opening is formed in the central portion, there is a problem that it is difficult to distinguish the front and rear when viewing the absorbent article.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a pants-type diaper that has a good fit in the vicinity of the leg opening and is easily distinguishable between front and rear. Is to provide.

A main invention for achieving the above object is an absorbent article having a longitudinal direction, a lateral direction, and a thickness direction, and comprising an absorbent main body, a leg gather part, and a belt part, wherein the absorbent article In a state where the absorbent article is extended along the longitudinal direction of the absorbent main body, the leg gather portions are arranged on both sides in the lateral direction of the absorbent main body, and the belt portion is formed of the absorbent main body. A part and the leg gather portion are arranged so as to overlap in the thickness direction, and a pair of leg opening portions are formed by notches provided in at least one of the belt portion and the leg gather portion. The belt part is joined to the absorbent main body and the leg gather part at a joint part that is inclined outward in the lateral direction from both ends in the longitudinal direction toward the leg opening. The distance between the longitudinal front end of the leg opening and the longitudinal front end of the absorbent body is such that the longitudinal rear end of the leg opening and the absorbent body rather shorter than the distance between the longitudinal back end, the periphery of the leg opening is disposed in a state where the elastic sheet member having elasticity is extended in the longitudinal direction, the leg The elastic sheet member arranged in a region overlapping with the gather portion has a width in the lateral direction at the center position in the longitudinal direction of the leg opening, at the rear end in the longitudinal direction of the leg opening. The absorbent article is narrower than the width in the lateral direction .

  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, it is possible to provide a pant-type diaper that has a good fit in the vicinity of the leg opening and can be easily distinguished between the front and rear.

It is a schematic perspective view showing the appearance of diaper 1. FIG. 2A is a plan view illustrating the diaper 1 in a state of being stretched along the longitudinal direction. 2B is a schematic cross-sectional view illustrating the AA cross-section of FIG. 2A. FIG. 3A is a plan development view illustrating a state in which the diaper 1 in a state of being stretched along the longitudinal direction is developed in the middle of the manufacturing process. FIG. 3B is a schematic cross-sectional view illustrating the BB cross section of FIG. 3A. It is a figure explaining an example of the manufacturing process of the diaper. It is a figure explaining the shape of leg opening HL. FIG. 6A is a side view illustrating a state in which a conventional pants-type diaper is worn. FIG. 6B is a side view illustrating a state in which the diaper 1 of the first embodiment is worn. FIG. 7A is a plan view illustrating the diaper 2 in a state of being stretched along the longitudinal direction of the absorbent main body 10. FIG. 7B is a schematic cross-sectional view showing the CC cross section of FIG. 7A. It is a figure explaining an example of the manufacturing process of the diaper.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
An absorbent article having a longitudinal direction, a transverse direction, and a thickness direction, comprising an absorbent main body, a leg gather portion, and a belt portion, wherein the absorbent article is the longitudinal direction of the absorbent main body. The leg gather portions are disposed on both sides of the absorbent main body in the lateral direction, and the belt portion includes a part of the absorbent main body, the leg gather portions, and the thickness. A pair of leg hole openings are formed by notches provided in at least one of the belt part and the leg gather part, and the belt part is arranged in the longitudinal direction. Joined to the absorbent main body and the leg gather part at the joint part inclined outward in the lateral direction from the both end parts toward the leg opening part, and in the longitudinal direction of the leg part opening part. The distance between the end and the longitudinal front end of the absorbent body is greater than the distance between the longitudinal rear end of the leg opening and the longitudinal rear end of the absorbent body. Absorbent article characterized by being short.

  According to such an absorbent article, the leg opening is disposed closer to the front in the longitudinal direction, so that the wearer is less likely to interfere with the movement of the leg on the front side and the wearer's buttocks on the rear side. Will be covered widely. Thereby, the fit property when wearing an absorbent article (diaper) improves. Moreover, when the leg opening is disposed near the front and the surface area in the back side region of the diaper is increased, the front side and the rear side can be easily distinguished when the diaper is visually recognized.

  In this absorbent article, the leg gather portion has a width in the lateral direction between a front end in the longitudinal direction of the leg-hole opening and a rear end in the longitudinal direction of the leg-hole opening. It is desirable to have the narrowest part.

  According to such an absorbent article, when the diaper is worn, the width of the leg gather portion is reduced in the vicinity of the region that comes into contact with the wearer's groin, so that interference between the leg gather and the wearer's groin is suppressed. Thus, the fit can be improved and the uncomfortable feeling when wearing the diaper can be reduced.

  In such an absorbent article, the belt portion has the lateral width between the front end in the longitudinal direction of the leg opening and the rear end in the longitudinal direction of the leg opening. It is desirable to have a narrowing portion.

  According to such an absorbent article, the width | variety of a belt part becomes narrow in the area | region contact | abutted to a wearer's hip bone (pelvis) periphery at the time of diaper wear. This area is the part where the wearer grips and pulls the belt part when pulling up the diaper. Therefore, by narrowing the width of the belt part in this area, the belt part can be grasped firmly. It becomes possible to wear a diaper, and the fit at the time of wearing can be improved more.

  In this absorbent article, in the region inside the lateral direction of the leg opening of the leg gather portion, a thread-like elastic member is arranged in an elongated state in the longitudinal direction, and the leg opening The lateral distance between the end of the leg-hole opening at the center position in the longitudinal direction of the portion and the thread-like elastic member disposed on the outermost side in the transverse direction among the thread-like elastic members is: Between the end of the leg opening at the front end or the rear end in the longitudinal direction of the leg opening and the thread elastic member arranged on the outermost side in the lateral direction among the thread elastic members Desirably less than the lateral distance.

  According to such an absorbent article, the leg gather portion is easily contracted near the center position of the leg opening, which is a region in contact with the wearer's buttocks, and fits along the shape of the wearer's buttocks. It becomes easy to do. In addition, by concentrating the contraction force generated by the thread-like elastic member on the region, it is easy to suppress the occurrence of slack or large wrinkles in the heel portion.

  In such an absorbent article, it is desirable that an elastic sheet member having stretchability is arranged in the peripheral direction of the leg opening portion in a state of being stretched in the longitudinal direction.

  According to such an absorbent article, since the periphery of the leg opening is reinforced by the elastic sheet member, the strength of the leg opening is increased and the diaper can be more difficult to tear. In addition, since the sheet-like elastic stretch sheet is provided so as to overlap the leg gather part, the periphery of the leg opening can be fitted with the surface, and the leg gather around the diaper is worn. The skin feels good.

  In such an absorbent article, the elastic sheet member disposed in a region overlapping with the leg gather portion has a width in the lateral direction at a center position in the longitudinal direction of the leg opening portion. It is desirable that the width is narrower than the width in the lateral direction at the rear end in the longitudinal direction of the opening.

  According to such an absorbent article, by reducing the width of the elastic sheet member in the vicinity of the center position in the longitudinal direction of the leg opening, the contraction force acting on the inguinal portion is less likely to be dispersed and the fitting property is further improved. can do. On the other hand, by making the elastic sheet member wider at both ends in the longitudinal direction of the leg opening, the contraction force tends to act in a wide range in the abdomen and the buttocks region, and discomfort due to excessive tightening is less likely to occur. it can.

  In such an absorbent article, it is desirable that the leg gather portion and the belt portion are formed of one member.

  According to such an absorbent article, since a joint portion or the like is not provided between the belt portion and the leg gather portion, stress is applied to the boundary portion between the belt portion and the leg gather portion when the diaper is worn. Even in the case of concentration, it becomes difficult to form the starting point of the tear. Thereby, it can suppress that a diaper is torn in a leg periphery opening part.

  In such an absorbent article, the smaller one of the angles formed by the first joint portion formed on the front side in the longitudinal direction and the longitudinal direction is a second joint formed on the rear side in the longitudinal direction. It is desirable that the angle is larger than the smaller one of the angles formed by the portion and the longitudinal direction.

  According to such an absorbent article, the angle formed between the absorbent main body and the belt portion is large on the front side (belly side) and small on the rear side (back side) in a state where the absorbent article is formed in a pants shape. Cheap. As a result, when the diaper is worn, the rear side of the absorbent main body is easily pulled up to the upper part of the wearer's buttocks, and a gap is hardly formed between the wearer's buttocks and the fit is improved. Moreover, since the buttock becomes a clean impression in appearance, it is difficult to give the wearer a resistance to wearing a diaper.

  In such an absorbent article, it is desirable that a predetermined interval is provided between the joint and the leg opening.

  According to such an absorbent article, since the joint part formed in the diaper and the peripheral part of the leg opening are not intersecting with each other, the starting point of the tear is hardly formed in the peripheral part of the leg opening. It becomes easy to suppress that it breaks.

=== First Embodiment ===
<Basic configuration of pants-type disposable diaper 1>
A pants-type disposable diaper 1 (hereinafter also referred to as “diaper 1”) will be described as an example of the absorbent article according to the first embodiment.

  FIG. 1 is a schematic perspective view showing the appearance of the diaper 1. The diaper 1 has the absorptive main body 10, the leg gather part 20, and the belt part 30, and has a pants-type shape as shown in FIG. 1 when worn. The diaper 1 has a “longitudinal direction” and a “lateral direction” orthogonal to each other in the pant-type state of FIG. 1. And the waist part opening part HB is formed in the upper side of the vertical direction of the diaper 1, and a pair of leg periphery opening part HL is formed in the both sides of a horizontal direction. Moreover, the front side of the diaper 1 is a part which covers a wearer's belly side at the time of wear, and a back side is a part which covers a wearer's back side.

  FIG. 2A is a plan view illustrating the diaper 1 in a state of being stretched along the longitudinal direction of the absorbent main body 10. 2B is a schematic cross-sectional view illustrating the AA cross-section of FIG. 2A. FIG. 3A is a plan development view illustrating a state in which the diaper 1 in a state of being stretched along the longitudinal direction of the absorbent main body 10 is developed during the manufacturing process. FIG. 3B is a schematic cross-sectional view illustrating the BB cross section of FIG. 3A.

  The diaper 1 is in a planar state as shown in FIG. 2A at the final stage of the manufacturing process. The manufacturing process of the diaper 1 will be described later with reference to FIG. The planar diaper 1 has a “longitudinal direction”, a “lateral direction”, and a “thickness direction” as three directions orthogonal to each other. The longitudinal direction of the diaper 1 in a planar state is a direction along the longitudinal direction of the absorbent main body 10. This longitudinal direction is a direction corresponding to the vertical direction in the pant-type state of FIG. 1, but strictly speaking, the vertical direction in the pant-type state and the vertical direction in the planar state are slightly different, so it is necessary. In such a case, “longitudinal direction in a pants-type state”, “longitudinal direction in a planar state”, and the like are distinguished from each other. In FIG. 2A, the state in which the diaper 1 is stretched along the longitudinal direction (that is, a planar state) means that the diaper 1 is stretched in the longitudinal direction against the contraction force by the leg gather elastic member 23 and the belt elastic member 33 described later. When it is extended, it means a state where it is extended to such an extent that no wrinkles or gathers can be visually recognized at the portion where each elastic member is arranged. Furthermore, the shape of the diaper 1 in the state of being extended in the longitudinal direction is the same as the shape of the diaper 1 when it is flatly extended when the contraction force by various elastic members such as the leg gather elastic member 23 is not expressed. It is.

  Moreover, in the following description, in the state which extended the absorptive main body 10 to the longitudinal direction, let the side which hits a wearer's belly side be the front side (belly side) of a longitudinal direction, and let the side which hits a wearer's back side be a longitudinal direction. The rear side (back side). The lateral direction of the diaper 1 in a planar state is the same concept as the lateral direction and the thickness direction of the diaper 1 in the pant-type state in FIG. The thickness direction of the diaper 1 in a planar state is a direction orthogonal to the longitudinal direction and the lateral direction, respectively, and the side in contact with the wearer's skin is referred to as “skin side”, and the opposite side is referred to as “non- "Skin side".

  As shown in FIGS. 2A and 2B, in the diaper 1 in a flat state, the absorbent main body 10 is disposed along the longitudinal direction, and a pair of leg gathers 20 is provided on both sides of the absorbent main body 10 in the lateral direction. Is arranged. And a pair of belt part 30 is arrange | positioned so that a part of absorptive main body 10 and the leg gather part 20 may overlap with the skin side of a thickness direction. In the diaper 1 of 1st Embodiment, as FIG. 3A shows, the leg gather part 20 and the belt part 30 are formed of the side seat | sheet 40 which is one sheet member. The leg gather part 20 and the belt part 30 are formed by folding the side sheet 40 inward in the lateral direction along a folding line FL extending in the longitudinal direction.

  The leg gather portion 20 is provided with a leg gather cutout portion 25 partially cut away at the laterally outer end portion 20eо (folding line FL). Similarly, the belt portion 30 is provided with a belt cutout portion 35 that is partially cut out at the laterally outer end portion 30eо (folding line FL). The leg gather cutout portion 25 and the belt cutout portion 35 form a leg opening HL.

  The belt portion 30 is composed of the absorbent main body 10 (strictly speaking, the absorbent main body 10 is defined by a pair of first joint portions WL1 inclined from the longitudinal front end 10ef of the absorbent main body 10 toward the leg opening HL. The top sheet 13) disposed on the skin side and the leg gathers 20 are joined. Similarly, the belt portion 30 includes the absorbent main body 10 and the leg gather portion 20 by a pair of second joint portions WL2 inclined from the longitudinal rear end portion 10er of the absorbent main body 10 toward the leg opening HL. It is joined. The first joint WL1 and the second joint WL2 are joined by known welding means such as thermal welding or ultrasonic welding, but may be joined using an adhesive such as a hot melt adhesive. .

  Note that if the smaller angle of the angles formed by the first joint portion WL1 with the longitudinal direction is the inclination angle θ1, and the smaller angle of the angles formed by the second joint portion WL2 with the longitudinal direction is the inclination angle θ2, the inclination angle. Each joint is formed such that θ1 is larger than the inclination angle θ2 of the second joint WL2 with respect to the longitudinal direction. Although details will be described later, by adjusting the inclination angles θ1 and θ2 of each joint portion in this way, the diaper 1 is shaped like an underwear such as shorts or briefs when formed into a pants shape. The fitting property at the time of wearing can be made favorable.

  While the diaper 1 having such a flat state is opened in the pair of belt portions 30 and 30 with the lateral inner end portions 30ei and 30ei on both sides in the lateral direction, the absorbent main body 10 is moved in the vicinity of the central position CL in the longitudinal direction. By folding it, the pants-type diaper 1 can be worn. At this time, a waistline opening HB is formed by the longitudinal front end 10ef, the longitudinal rear end 10er of the absorbent main body 10, and the inner ends 30ei of the pair of belt portions 30 (see FIG. 1).

  As shown in FIG. 2A, the absorbent main body 10 is cut in the longitudinal direction by cutting a substantially rectangular member (see FIG. 3A) extending in the longitudinal direction along the first joint WL1 and the second joint WL2. Each end portion is a sheet-like member having a tapered shape in a plan view. The absorptive main body 10 is provided with an absorbent body 11, a top sheet 13 (corresponding to a skin-side sheet) provided by covering the absorbent body 11 from the skin side, and covering the absorbent body 11 from the non-skin side. And a back sheet 15 (corresponding to a non-skin side sheet). Each of these members 13, 11, and 15 is joined to a member adjacent in the thickness direction by a hot melt adhesive or the like (see FIGS. 2B and 3B). Examples of the application pattern of the adhesive include an Ω pattern, a spiral pattern, and a stripe pattern, and the same applies to other adhesives that appear later.

  The absorbent body 11 has an absorbent core in which a predetermined liquid absorbent material is formed into a predetermined shape (for example, a substantially hourglass shape in plan view), and a core wrap sheet that covers the outer peripheral surface of the absorbent core, It is a member that absorbs excreted fluid such as urine when the diaper 1 is worn. As a liquid absorptive material, liquid absorptive granular materials, such as liquid absorptive fibers, such as pulp fiber, and superabsorbent polymer (what is called SAP) can be illustrated. As the core wrap sheet, a liquid permeable sheet such as tissue paper or nonwoven fabric can be used. The shape of the absorbent body 11 is not limited to a substantially hourglass shape in plan view as shown in FIG. 3A, and may be another shape.

  The top sheet 13 is formed of a flexible sheet member having liquid permeability. For example, a sheet member such as an air-through nonwoven fabric can be used. The planar size of the top sheet 13 is a size that protrudes from both sides in the longitudinal direction and both sides in the lateral direction of the absorbent body 11.

  As shown in FIG. 3B, the back sheet 15 is formed by stacking and joining two sheet members, a leak-proof sheet 15f and an exterior sheet 15n, in the thickness direction. The leak-proof sheet 15 f is a liquid-impermeable sheet member made of a polyethylene (PE) film or a polypropylene (PP) film, and is disposed on the skin side in the thickness direction of the back sheet 15. The exterior sheet 15n is a sheet member made of a nonwoven fabric or the like, and is a member that is disposed on the non-skin side in the thickness direction of the back sheet 15 and constitutes the exterior of the absorbent main body 10. However, the back sheet 15 is not limited to the above configuration as long as it has a certain leak-proof property. The back sheet 15 is also a flat sheet that protrudes from both sides in the longitudinal direction and both sides in the lateral direction of the absorber. Then, the top sheet 13 and the back sheet 15 are joined to each other in the thickness direction so that the substantially V-shapes at both ends in the longitudinal direction are substantially aligned, whereby the absorber is interposed between the sheets 13 and 15. Is held.

  As shown in FIGS. 3A and 3B, the leg gather portion 20 is a sheet member that is long in the longitudinal direction joined to both lateral sides of the absorbent main body 10, and when forming the diaper 1 into a pants shape, Shrinks along the leg opening HL to form a bowl-shaped leg gather. The leg gather part 20 is formed by overlapping two sheets of a first sheet 21 and a second sheet 22 made of a nonwoven fabric or the like in the thickness direction. In addition, joining of the absorbent main body 10 and the leg gather portion 20 is hot in a state where the inner end portion in the lateral direction of the leg gather portion 20 is sandwiched between the top sheet 13 and the back sheet 15 of the absorbent main body 10. This is done by bonding with a melt adhesive or the like.

  As shown in FIGS. 3A and 3B, the belt portion 30 is a longitudinally long sheet member provided on both sides in the lateral direction of the leg gather portion 20, and when the diaper 1 is formed into a pants shape, A belt is formed (see FIG. 1). The belt part 30 is formed by overlapping two sheets of a first sheet 31 and a second sheet 32 made of nonwoven fabric or the like in the thickness direction.

  As described above, in the present embodiment, the leg gather portion 20 and the belt portion 30 are integrally formed by the side seat 40 that is one member. That is, the first sheet 21 of the leg gather portion 20 and the first sheet 31 of the belt portion 30 are constituted by one sheet member 41, and the second sheet 22 of the leg gather portion 20 and the second sheet 32 of the belt portion 30 are also one. The sheet member 42 is used. In the present embodiment, a portion of the side seat 40 that is laterally inner than the fold line FL is the leg gather portion 20, and a laterally outer portion of the fold line FL is the belt portion 30.

  A leg opening HL is formed so as to straddle the fold line FL. As described above, the leg opening HL includes the leg gather notch 25 obtained by notching the first sheet 21 and the second sheet 22 of the leg gather 20, and the first sheet 31 and the second sheet 32 of the belt 30. It is formed by the belt notch part 35 which notched. The leg gather cutout portion 25 and the belt cutout portion 35 are formed in an asymmetric shape that is not line symmetric with respect to the folding line FL.

  However, in the present embodiment, both the leg gather cutout portion 25 and the belt cutout portion 35 are not necessarily formed. For example, the leg gather notch portion 25 may be formed in the leg gather portion 20, and the belt notch portion 35 may not be formed in the belt portion 30. In this case, the leg opening HL is formed by the leg gather notch 25. Conversely, the leg gather notch 25 may not be formed, but only the belt notch 35 may be formed. In this case, the leg opening HL is formed by the belt notch 35. Further, the notches 25 and 35 may have a slit shape instead of the substantially elliptical shape as shown in FIG. 3A.

  A leg gather elastic member 23 made of thread rubber or the like is disposed between the first sheet 21 and the second sheet 22 of the leg gather portion 20 in an elongated state and fixed by a hot melt adhesive or the like. . In FIG. 3A, two leg gather elastic members 23 are arranged at a position further inside than the lateral inner end of the leg gather notch 25 (that is, the lateral inner end of the leg opening HL). ing. The leg gather elastic member 23 gives the leg gather portion 20 elasticity in the longitudinal direction. Thereby, when forming the diaper 1 in a pants shape, the leg gather part 20 contracts along the leg opening HL, and a bowl-shaped leg gather is formed, thereby improving the fit of the wearer around the leg. be able to.

  Similarly, a belt elastic member 33 made of thread rubber or the like is disposed between the first sheet 31 and the second sheet 32 of the belt portion 30 so as to extend in the longitudinal direction, and is fixed by a hot melt adhesive or the like. Yes. In FIG. 3A, a plurality of belt elastic members 33 are arranged in the lateral direction in a region further outward than the laterally outer end of the belt notch 35 (that is, the laterally outer end of the leg opening HL). Has been placed. The belt elastic member 33 imparts stretchability in the longitudinal direction to the belt portion 30. Thereby, when forming the diaper 1 in a pants shape, a contracting force along the waistline opening HB is developed over almost the entire area of the belt portion 30, and the displacement of the waistline when the diaper 1 is worn is suppressed. .

  In addition, the leg gather elastic member 23 and the belt elastic member 33 are arrange | positioned in the position which does not mutually overlap in the thickness direction, as FIG. 2B shows. That is, when viewed from the upper side in the thickness direction, the leg gather elastic member 23 and the belt elastic member 33 are in a positional relationship such that they are alternately arranged in the lateral direction. Thereby, the area | region where the elastic members 32 and 33 are arrange | positioned becomes easy to fit planar shape in the leg periphery opening part HL vicinity of the diaper 1 formed in the underpants type.

  Further, an expandable sheet 43 formed of a stretchable nonwoven fabric or the like is provided between the sheet member 41 (21, 31) and the sheet member 42 (22, 32). The stretchable sheet 43 is a belt-like elastic sheet member wider than the width in the lateral direction of the leg opening HL as shown by the hatched portion in FIG. 3A, and has an opening having the same shape as the leg opening HL. The sheet members 41 and 42 are fixed to the sheet members 41 and 42 with a hot melt adhesive or the like in a state of being elongated in the longitudinal direction. Thereby, the peripheral part of the leg periphery opening part HL is reinforced by the elastic sheet 43 over the perimeter. Moreover, the fitting property in the peripheral part of the leg periphery opening part HL improves more by the shrinkage force expressed by the planar expansion-contraction sheet 43. FIG. If the elastic sheet 43 is not provided at the peripheral edge of the leg opening HL and only the thread rubber such as the leg gather elastic member 23 is provided, there is a wrinkle between the thread rubber and the thread rubber. It becomes easy to be formed, and when the diaper 1 is worn, there is a possibility that the leg opening HL may become loose, or a rubber band mark may easily remain on the skin. On the other hand, fit property can be improved by arrange | positioning the planar elastic sheet 43 in the peripheral part of the leg periphery opening part HL.

  As an example of the stretchable sheet 43, a so-called gear stretching process is performed on a non-woven fabric having a substantially elastic elastomer fiber such as a polyurethane elastomer and a thermoplastic resin fiber such as a polyolefin resin. Although the nonwoven fabric which expressed the elasticity can be illustrated, it is not restricted to this at all.

  Further, as shown in FIG. 3B, the laterally outer end region of the belt portion 30 is folded twice inward in the lateral direction at the first belt end fold line FLb1 and the second belt end fold line FLb2. It is fixed in the folded state with a hot melt adhesive or the like. That is, the second belt end fold line FLb2 is a portion that becomes the laterally inner end 30ei of the belt portion 30 and a portion that becomes the waistline opening HB in FIG. 2A. By setting the waist opening HB to such an end folding structure, when the diaper 1 is worn, the stress around the wearer's waist can be reduced. However, the said horizontal direction edge part area | region does not necessarily need to be made into the above folding structures.

<About production of diaper 1>
Then, the method to manufacture the diaper 1 is demonstrated easily. FIG. 4 is a diagram for explaining an example of the manufacturing process of the diaper 1.

  In this example, the diaper 1 is manufactured by performing predetermined processing (S101 to S105) on the base sheet while transporting the base sheet as a material in the transport direction. Hereinafter, the conveyance direction of the sheet member is referred to as “MD direction”, and the direction orthogonal to the MD direction is referred to as “CD direction”. The MD direction is a direction along the longitudinal direction (vertical direction) of FIG. 2A, and the CD direction is a direction along the lateral direction of FIG. 2A.

  The sheet | seat member used as the base material sheet of the diaper 1 in 1st Embodiment is the absorbent main body continuous sheet 10A and the side continuous sheet 40A. The absorbent main body continuous sheet 10A is a sheet member in which a plurality of absorbent main bodies 10 are continuously arranged in the longitudinal direction (longitudinal direction). That is, the absorbent main body continuous sheet 10 </ b> A is a sheet member in which a plurality of absorbent bodies 11 are sandwiched between the continuous sheet of the top sheet 13 extending in the MD direction and the continuous sheet of the back sheet 15. Similarly, the side continuous sheet 40 </ b> A is a sheet member in which the side sheets 40 that form the leg gather portion 20 and the belt portion 30 are continuously arranged in the longitudinal direction (vertical direction).

  First, as shown in FIG. 4, the base sheet in which the side continuous sheet 40 </ b> A is bonded to both sides in the CD direction (lateral direction) of the absorbent main body continuous sheet 10 </ b> A is continuously conveyed in the MD direction (S <b> 101). .

  Subsequently, the leg gather cutout portion 25 and the belt cutout portion 35 serving as the leg opening HL at positions where the folding line FL is straddled on both sides of the absorbent body 11 in the CD direction (lateral direction) with respect to the conveyed base material sheet. Is formed (S102). The notch is formed using a cutter roll (not shown). 4 is a state corresponding to the diaper 1 in the unfolded state in FIG. 3A.

  Subsequently, a portion corresponding to the belt portion 30 of the side continuous sheet 40A is folded back inward in the CD direction (lateral direction) by a folding line FL, and a part of the absorbent main body 10 and the leg gather portion and the belt portion 30 are joined. The state is overlapped in the thickness direction (S103).

  Subsequently, the first joint portion WL1 and the second joint portion WL2 are formed by joining means such as ultrasonic fusion and thermal fusion, and the belt portion 30, the absorbent main body 10, and the leg gather portion 20 are joined ( S104). As described above, the first joint portion WL1 and the second joint portion WL2 are formed so that the inclination angles θ1 and θ2 satisfy a predetermined condition (θ1> θ2).

  Subsequently, the base sheet is cut (S105). Specifically, the diaper 1 is cut for each individual from the base sheet that continues in the MD direction, and further, the four corners of the rectangle are cut along the first joint WL1 and the second joint WL2. Thereby, the diaper 1 of the planar state shown by FIG. 2A is formed.

<About the fit of diaper 1>
The diaper 1 of this embodiment has various structures so that the wearer can feel good fit when worn. In particular, by adjusting the position at which the leg opening HL is formed, compared to a conventional diaper, the fit in the leg retraction part is improved and the front and rear of the diaper 1 are easily distinguished. . Hereinafter, these points will be described.

  FIG. 5 is a diagram for explaining the arrangement of the leg-hole openings HL in the diaper 1. In FIG. 5, the leg hole opening HL disposed on the right side in the lateral direction is shown in an enlarged manner in a state where the diaper 1 is developed in a plane as in FIG. 3A.

  In the diaper 1 of the present embodiment, the longitudinal distance glf between the longitudinal front position HLef of the leg opening HL and the longitudinal front end 10ef of the absorbent main body 10 is the longitudinal length of the leg opening HL. The leg opening HL is disposed so as to be smaller than the longitudinal distance glr between the position rear end position HLer and the longitudinal front end 10er of the absorbent body 10. That is, the leg hole opening HL is disposed closer to the front in the longitudinal direction, and the center position CLhl in the longitudinal direction of the leg hole opening HL is closer to the front side in the longitudinal direction than the center position CL in the longitudinal direction of the absorbent body 10. positioned.

  Since the leg-hole opening HL is arranged closer to the front in the longitudinal direction of the diaper 1, when the wearer moves the leg to the front side while wearing the diaper 1, Interference of movement is suppressed. For example, when the wearer walks while wearing the diaper 1, the base of the leg is caught by the peripheral edge of the leg opening HL, and the problem that the leg is difficult to move forward is less likely to occur. Further, the fact that the leg opening HL is arranged closer to the front means that the opening area is smaller in the region behind the longitudinal center position CL of the absorbent main body 10. That is, on the rear side in the longitudinal direction, the area (surface area) of the portion where the fabric of the diaper 1 (absorbent body 10) is present is increased. Thereby, a wearer's buttocks will be widely covered in a wearer's back side, and the fitting property at the time of wear of diaper 1 will improve.

  Furthermore, since the leg opening HL is disposed closer to the front and the surface area in the back side region of the diaper 1 is increased, it is easy to distinguish the front side and the rear side of the diaper 1 in appearance. Thereby, when the diaper 1 is worn reversely, the fit is deteriorated, or a gap is formed between the wearer's body and the leg opening HL, and excrement easily leaks out of the diaper 1. Problems such as becoming difficult to occur.

  Further, the arrangement of the leg opening HL is made closer to the front in the longitudinal direction, and the shape of the opening HL is substantially elliptical as shown in FIG. Can be. In FIG. 5, the leg gather notch 25 forming the leg opening HL has the widest lateral width in the region between the front end HLef and the rear end HLer in the longitudinal direction. Specifically, the leg gather notch 25 draws a gentle curve that protrudes inward in the lateral direction between the front end HLef and the rear end HLer, and the lateral width of the leg gather notch 25 is in the longitudinal direction. It is the widest in the vicinity of the center position CLhl. Therefore, if the lateral width of the leg gather portion 20 in the region where the leg opening HL (leg gather cutout portion 25) is formed is W20, W20 is the narrowest in the vicinity of the longitudinal center position CLhl. The vicinity of the center position CLhl is a region that comes into contact with the wearer's groin when the diaper 1 is worn. Therefore, by narrowing the lateral width W20 of the leg gather portion 20 in the vicinity of the center position CLhl, interference between the leg gather portion 20 and the wearer's groin is suppressed, improving fit and wearing diapers. The feeling of strangeness at the time can be reduced.

  Similarly, the belt notch 35 forming the leg opening HL has the widest lateral width in the region between the front end HLef and the rear end HLer in the longitudinal direction. In FIG. 5, the belt notch 35 has a gentle curve that protrudes outward in the lateral direction between the front end HLef and the rear end HLer, and the lateral width is the largest in the vicinity of the central position CLhl in the longitudinal direction. Yes. Therefore, if the lateral width of the belt portion 30 in the region where the leg opening HL (belt notch portion 35) is formed is W30, W30 is the narrowest in the vicinity of the center position CLhl in the longitudinal direction. The center position CLhl is a region where the wearer grips and pulls the belt portion 30 when the diaper 1 is in contact with the periphery of the wearer's hip bone (pelvis) and the diaper 1 is pulled upward. Therefore, by narrowing the width of the belt portion 30 in the vicinity of the center position CLhl, the wearer can wear the diaper 1 by firmly grasping the belt portion 30, and the diaper 1 can be worn on the body. It will be easier to fit. Moreover, since the external appearance of the diaper 1 becomes closer to underwear because the width of the belt part 30 in the part looks narrow, it is possible to reduce the hesitation and resistance of the wearer with respect to wearing the “diaper”.

  The leg opening HL is desirably formed so that the opening area is larger in the region on the front side in the longitudinal direction than on the region on the rear side in the longitudinal direction. In the present embodiment, the lateral width of the leg opening HL in the longitudinal front region is equal to or greater than the lateral width of the leg opening HL in the longitudinal rear region corresponding to the longitudinal front region. It has become. That is, the total value of the lateral width of the leg gather notch 25 and the lateral width of the belt notch 35 at a position separated from the leg opening HL front end HLef in the longitudinal direction by a predetermined distance h. Is the sum of the lateral width of the leg gather notch 25 and the lateral width of the belt notch 35 at a position that is a predetermined distance h inward in the longitudinal direction from the rear end HLer of the leg opening HL. It is greater than or equal to the value. If it is such a shape, the magnitude | size of the leg periphery opening part HL will become wide in a wearer's belly side (front side), and will become narrow in a wearer's back | dorsal side (rear side). Therefore, when the diaper 1 is worn, the leg is easier to move on the front side, and the wearer's buttocks are more easily covered on the rear side.

  At this time, at least in the front region in the longitudinal direction, the lateral width of the leg gather cutout portion 25 is preferably formed to be larger than the lateral width of the belt cutout portion 35. That is, the lateral width of the leg gather cutout portion 25 is longer than the lateral width of the belt cutout portion 35 at a position that is a predetermined distance h inward in the longitudinal direction from the front end HLef of the leg opening HL. It is desirable. The leg gather cutout portion 25 is greatly cut out on the front side, so that when the wearer passes the leg through the leg opening HL in the operation of wearing the diaper 1 formed in a pants shape, It becomes difficult to get caught by the front side part of the leg gather part 25, and it becomes easy to wear the diaper 1 smoothly. In addition, the leg opening HL is easily formed along the shape of the leg after the diaper 1 is worn, so that the movement of the leg is less likely to be obstructed, and a clean underwear-like appearance such as shorts and briefs is realized. can do.

  Moreover, in the diaper 1, it fits by adjusting the positional relationship of the leg gather elastic member 23 arrange | positioned along the longitudinal direction at the leg gather part 20, and the leg periphery opening part HL (leg gather notch part 25). Increases sex. In FIG. 5, the lateral direction between the end edge part of the leg periphery opening part HL in the longitudinal center position CLhl of the leg periphery opening part HL and the leg gather elastic member 23 arrange | positioned at the outermost side of a horizontal direction. The distance W23c is a lateral distance W23f between the edge of the leg opening HL at the longitudinal front end HLef of the leg opening HL and the leg gather elastic member 23 arranged on the outermost side in the horizontal direction. Smaller than. Similarly, the distance W23c is the lateral distance between the edge of the leg opening HL at the rear end HLer in the longitudinal direction of the leg opening HL and the leg gather elastic member 23 arranged on the outermost side in the lateral direction. It is smaller than the direction distance W23r.

  By disposing the leg gather elastic member 23 near the leg hole opening HL near the center position CLhl of the leg hole opening HL that abuts the wearer's buttocks, the leg gather elastic member with respect to the leg hole opening HL The contraction force by 23 is made to act easily. Thereby, in the center position CLhl vicinity, the leg gather part 20 becomes easy to shrink | contract along the edge part of the leg periphery opening part HL, and a leg gather can be fitted along the shape of a wearer's buttocks. And in this area | region, since the horizontal width W20 of the leg gather part 20 is narrow as mentioned above, it can make the contraction force by the leg gather elastic member 23 act on the leg gather part 20 intensively. it can. Thereby, it is suppressed that leg gather part 20 contracts unevenly near central position CLhl, and it becomes difficult to give a wearer the discomfort by a slack generating in a buttocks or making a big wrinkle. On the other hand, at both end portions HLef and HLer of the leg opening HL, the distance between the leg gather elastic member 23 and the leg opening HL is increased, so that the contraction force acting on the edge of the leg opening HL is dispersed. It is easy to do, the excessive shrinkage | contraction of the leg gather part 20 is suppressed, and it becomes easy to cover a buttocks and an abdomen.

  By the way, in the disposable diaper of the type in which a leg opening is formed between the belt part and the leg gather part, stress tends to concentrate on the boundary part between the leg gather part and the belt part because of its structure. And when an excessive stress acts on the said boundary part when wearing a diaper, there exists a possibility that a diaper may be torn as a starting point which a nonwoven fabric etc. tear. In the case of the diaper 1 of the present embodiment, the boundary between the leg gather portion 20 and the belt portion 30 is formed at the front end HLef and the rear end HLer in the longitudinal direction of the leg opening HL, and stress tends to concentrate on the portion. .

  However, in the diaper 1, the leg gather portion 20 and the belt portion 30 are configured by the same sheet member (side seat 40), and no joint portion or the like is provided at the boundary portion (HLef, HLer) between the two. Even if stress concentrates on the part, the starting point of the tear is hardly formed. Therefore, when the diaper 1 is worn, problems such as the leg opening HL being torn are unlikely to occur.

  Furthermore, in the diaper 1, the elastic sheet 43 is arrange | positioned so that the leg periphery opening part HL may be surrounded, and this elastic sheet 43 is provided with the opening of the same shape as the leg periphery opening part HL. Since the periphery of the leg opening HL is reinforced by the stretchable sheet 43, the leg opening HL is prevented from being broken when the diaper 1 is worn. And since the sheet-like elastic sheet 43 is provided so as to overlap with the leg gather portion 20, the peripheral edge of the leg opening HL can be fitted on the surface, so that when the diaper 1 is worn The feel around the leg gather is improved.

  In the present embodiment, the lateral width of the stretchable sheet 43 on the leg gather portion 20 side is such that the width W43c at the center position CLhl in the longitudinal direction is equal to the width W43f at the front end HLef in the longitudinal direction and the longitudinal direction. It is narrower than the width W43r at the rear end HLer. By narrowing the width of the stretchable sheet 43 in the vicinity of the central position CLhl in the longitudinal direction, the shrinkage force acting on the inguinal portion becomes difficult to be dispersed, and the fitting property can be further enhanced. On the other hand, since the width of the stretchable sheet 43 becomes wider at both end portions HLef and HLer of the leg opening HL, the contraction force tends to act on a wide range in the abdomen and hip region. Thereby, the tightening force on the wearer's skin is dispersed, and discomfort due to excessive tightening can be made difficult to occur.

  Moreover, in the diaper 1, it fits at the time of wear by adjusting the inclination angle of the junction part (1st junction part WL1 and 2nd junction part WL2) which joins the absorptive main body 10 and the leg gather part 20, and a belt part. Increases sex. FIG. 6A is a side view illustrating a state in which a conventional pants-type diaper is worn. FIG. 6B is a side view illustrating a state in which the diaper 1 of the first embodiment is worn.

  In a conventional pant-type diaper, a joint formed on the front side (abdominal side) of the diaper (corresponding to the first joint WL1 of the present embodiment) and a joint formed on the rear side (back side) (the present embodiment) In general, it is formed symmetrically with respect to the longitudinal direction. That is, each joint part is formed so that the inclination angle with respect to the longitudinal direction of the front joint part and the inclination angle with respect to the longitudinal direction of the rear joint part are the same angle. In this case, the angle formed by the absorbent main body and the belt portion is equal in the front and rear directions in a pant-shaped state. As a result, as shown in FIG. 6A, when the diaper is worn, the rear side (back side) of the absorbent main body is likely to hang down, and a gap may easily be formed between the diaper main body and the wearer's buttocks. there were. In addition, the appearance has a rough impression on the buttock side, and the wearer can easily be aware that he is wearing a “diaper”, which may cause resistance.

  On the other hand, in the diaper 1, the inclination angle θ1 with respect to the longitudinal direction of the first joint portion WL1 is adjusted to be larger than the inclination angle θ2 with respect to the longitudinal direction of the second joint portion WL2 (θ1> θ2). In this case, the angle formed between the absorbent main body 10 and the belt portion 30 in a pant-shaped state is likely to be large on the front side and small on the rear side. As a result, as shown in FIG. 6B, when the diaper is worn, the rear side (back side) of the absorbent main body is pulled up to the upper part of the wearer's buttocks, and a gap is hardly generated between the wearer's buttocks and fit. Improves. In addition, it looks like wearing underwear, and it is easy to distinguish the front and back of the diaper 1 and the buttock has a clean impression, so the wearer is resistant to wearing “diapers” It can be difficult to give a feeling.

  In the present embodiment, as described with reference to FIG. 5, the distance glr between the leg opening HL and the end of the absorbent main body 10 is long on the rear side in the longitudinal direction, and the leg opening HL on the front side in the longitudinal direction. And the distance glf between the absorbent body 10 and the end of the absorbent body 10 are formed short. Therefore, the inclination angle θ2 with respect to the longitudinal direction of the second joint portion WL2 is small on the rear side in the longitudinal direction, and the inclination angle θ1 with respect to the longitudinal direction of the first joint portion WL1 is easily increased on the front side in the longitudinal direction. Thereby, it becomes possible to make the belt part 30 easy to pull up upwards while making the width of the belt part 30 wider on the rear side (back side) in the longitudinal direction than on the front side (belly side) in the longitudinal direction. Good fit is achieved.

  Moreover, as FIG. 3A shows, in the diaper 1, the edge part of the 1st junction part WL1 and the 2nd junction part WL2 does not cross | intersect the leg periphery opening part HL, respectively. In other words, a predetermined interval is provided between the first joint portion WL1 and the second joint portion WL2 and the leg opening HL. If the first joint portion WL1 (second joint portion WL2) is formed so as to intersect the leg opening HL, stress is concentrated at the intersecting portion when the diaper 1 is worn, and a starting point of the tear is formed. The leg opening HL may be easily broken. However, in the diaper 1 of the present embodiment, since the leg opening HL and the joints do not intersect with each other, the starting point of such a tear is hardly formed, and the leg opening HL is also difficult to break.

=== Second Embodiment ===
In the second embodiment, a pants-type disposable diaper 2 (hereinafter also referred to as diaper 2) in which the leg gather part 20 and the belt part 30 are formed of different members will be described. FIG. 7A is a plan view illustrating the diaper 2 in a state of being stretched along the longitudinal direction of the absorbent main body 10. FIG. 7B is a schematic cross-sectional view showing the CC cross section of FIG. 7A.

  Although the manufacturing method of the diaper 2 is different from that of the diaper 1 of the first embodiment, the structure of the diaper 2 is substantially the same as that of the diaper 1. That is, the configurations of the absorbent main body 10, the leg gather portion 20, and the belt portion 30 are substantially the same as the configurations of the respective portions in the first embodiment. Hereinafter, differences from the diaper 1 will be described.

  In the diaper 2, the leg gather portion 20 and the belt portion 30 are formed of different members. Therefore, the lateral gathering end 20 eо of the leg gather portion 20 and the lateral outer end 30 eо of the belt portion 30 are both connected. A belt lateral joining portion WL30 to be joined is formed. The belt joint portion WL30 is formed by adhesion using a hot melt adhesive or the like, but the belt lateral direction joint portion WL30 may be formed by welding.

  In addition, the leg gather elastic member 24 provided in the leg gather portion 20 in the diaper 2 is arranged in a part in the lateral direction as shown in FIG. 7A while extending in the longitudinal direction. However, the leg gather elastic member 24 may be arranged substantially linearly along the longitudinal direction (longitudinal direction) similarly to the leg gather elastic member 23 of the diaper 1.

  FIG. 8 is a diagram for explaining an example of the manufacturing process of the diaper 2. When manufacturing the diaper 2, predetermined | prescribed process (S201-S204) is given with respect to this base material sheet, conveying the base material sheet used as material to a conveyance direction (MD direction). Among these, S204 to S205 are the same as S104 to S105 of the first embodiment, and thus description thereof is omitted.

  The sheet members that serve as the base sheet of the diaper 2 in the second embodiment are the absorbent main body continuous sheet 10A, the leg gather continuous sheet 20A, and the belt continuous sheet 30A. The leg gather continuous sheet 20A is a sheet member in which the leg gather portions 20 are continuously arranged in the longitudinal direction (longitudinal direction). The belt continuous sheet 30A is a sheet member in which the belt portions 30 are continuously arranged in the longitudinal direction (longitudinal direction).

  When manufacturing the diaper 2, first, the sheet member in which the leg gather continuous sheet 20A is bonded to both sides of the CD of the absorbent main body continuous sheet 10A (lateral direction) and the belt continuous sheet 30A are both MD direction. The belt continuous sheet 30A is overlapped and joined from above the leg gather continuous sheet 20A (S201). As described above, the joining of the leg gather continuous sheet 20A and the belt continuous sheet 30A is performed by joining the end portions in the lateral direction using a hot-melt adhesive or the like. It is formed.

  Subsequently, the leg gather notch 25 and the belt notch 35 serving as the opening HL are formed (S202). These notches are respectively formed from above and below using a cutter roll or the like. In addition, a notch is not formed in the process of S202, but a notch is formed in the leg gather continuous sheet 20A and the belt continuous sheet 30A in advance before the process of S201. The bonding portion WL30 may be formed by bonding.

  Subsequently, in the step S203, the first bonding portion WL1 and the second bonding portion WL2 are formed in the same manner as S104 in FIG. 4, and in the step S204, the base material is cut in the same manner as in S105 in FIG. In this way, the diaper 2 is manufactured.

  The completed diaper 2 has substantially the same structure as the diaper 1 of the first embodiment. Therefore, the leg-hole opening HL formed in the diaper 2 is disposed closer to the front in the longitudinal direction as described with reference to FIG. Thereby, while making the fitting property of the diaper 2 favorable in the leg periphery opening part HL vicinity, discrimination | determination before and behind becomes easy.

=== Others ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

  In the above-described embodiment, the stretchable sheet 43 disposed on the peripheral edge of the leg opening HL is formed of the two sheet members (for example, the sheet members 41 and 42) constituting the leg gather portion 20 and / or the belt portion 30. Although provided in the middle, the position where the stretchable sheet 43 is provided is not limited to this. For example, the leg gather part 20 and / or the belt part 30 may be provided on the skin side in the thickness direction, or may be provided on the non-skin side.

1 diapers (absorbent articles, disposable diapers),
2 diapers (absorbent articles, disposable diapers),
10 Absorbent body, 10A Absorbent body continuous sheet,
10ef Longitudinal front end, 10er Longitudinal rear end,
11 Absorber,
13 Top sheet 15 Back sheet, 15f Leak-proof sheet, 15n Exterior sheet,
20 leg gather part, 20A leg gather continuous sheet,
20ei laterally inner end, 20eо laterally outer end,
21 first sheet, 22 second sheet, 23 leg gather elastic member,
24 leg gather elastic member, 25 leg gather notch,
30 belt portion, 30A belt continuous sheet 30ei lateral inner end, 30e lateral end,
31 first sheet, 32 second sheet, 33 belt elastic member,
35 Belt notch,
40 side sheet, 40A side continuous sheet,
41 sheet member, 42 sheet member, 43 elastic sheet,
HB waistline opening, HL leg opening,
CL center position, CLhl center position (leg opening HL),
FL wrapping line,
FLb1 first belt end folding line, FLb2 second belt end folding line,
glf longitudinal distance (front side), glr longitudinal distance (rear side),
W20 lateral width (leg gather part 20),
W30 lateral width (belt portion 30),
W43c, W43r lateral width (expandable sheet 43),
WL1 first joint, WL2 second joint WL30 belt lateral joint,
θ1 tilt angle (front side), θ2 tilt angle (rear side)

Claims (7)

Having a longitudinal direction, a transverse direction and a thickness direction;
In an absorbent article comprising an absorbent main body, a leg gather part, and a belt part, the absorbent article is extended along the longitudinal direction of the absorbent main body.
The leg gathers are arranged on both sides of the absorbent body in the lateral direction,
The belt portion is disposed so as to overlap with a part of the absorbent main body and the leg gather portion in the thickness direction,
A pair of leg openings are formed by a notch provided in at least one of the belt part and the leg gather part,
The belt part is joined to the absorbent main body and the leg gather part at a joint part that is inclined outward in the lateral direction from both ends in the longitudinal direction toward the leg opening.
The distance between the longitudinal front end of the leg opening and the longitudinal front end of the absorbent body is:
The rather short than the distance between the longitudinal direction of the rear end of the rear longitudinal end and the absorbent body of the leg openings,
An elastic sheet member having stretchability is arranged in the peripheral direction of the leg opening, and is stretched in the longitudinal direction,
The elastic sheet member disposed in a region overlapping with the leg gather portion has a width in the lateral direction at the center position in the longitudinal direction of the leg-hole opening that is behind the longitudinal direction of the leg-hole opening. An absorbent article characterized by being narrower than the lateral width at the end . The absorbent article according to claim 1,
The leg gather portion has a portion in which the lateral width is narrowest between the longitudinal front end of the leg opening and the rear end of the leg opening. Absorbent article characterized by. The absorbent article according to claim 1 or 2,
The belt portion has a portion in which the width in the lateral direction is the narrowest between a front end in the longitudinal direction of the leg-hole opening and a rear end in the longitudinal direction of the leg-hole opening. Absorbent article characterized. The absorbent article according to any one of claims 1 to 3,
In the region inside the lateral direction of the leg opening of the leg gather portion, a thread-like elastic member is arranged in a state of being extended in the longitudinal direction,
The lateral direction between the end of the leg-hole opening at the center position in the longitudinal direction of the leg-hole opening and the thread-like elastic member arranged on the outermost side in the lateral direction among the thread-like elastic members The distance of
Between the end of the leg opening at the front end or the rear end in the longitudinal direction of the leg opening and the thread elastic member arranged on the outermost side in the lateral direction among the thread elastic members An absorptive article characterized by being smaller than distance in a transverse direction. The absorbent article according to any one of claims 1 to 4 ,
The said leg gather part and the said belt part are formed of the one member, The absorbent article characterized by the above-mentioned. Having a longitudinal direction, a transverse direction and a thickness direction;
An absorbent article comprising an absorbent main body, a leg gather portion, and a belt portion,
In a state where the absorbent article is extended along the longitudinal direction of the absorbent main body,
The leg gathers are arranged on both sides of the absorbent body in the lateral direction,
The belt portion is disposed so as to overlap with a part of the absorbent main body and the leg gather portion in the thickness direction,
A pair of leg openings are formed by a notch provided in at least one of the belt part and the leg gather part,
The belt part is joined to the absorbent main body and the leg gather part at a joint part that is inclined outward in the lateral direction from both ends in the longitudinal direction toward the leg opening.
The distance between the longitudinal front end of the leg opening and the longitudinal front end of the absorbent body is:
Shorter than the distance between the longitudinal rear end of the leg opening and the longitudinal rear end of the absorbent body;
Of the angles formed by the first joint formed on the front side in the longitudinal direction and the longitudinal direction, the smaller angle is:
An absorptive article characterized by being larger than the smaller one of the angles formed by the second joint formed on the rear side in the longitudinal direction and the longitudinal direction. The absorbent article according to any one of claims 1 to 6 ,
An absorptive article, wherein a predetermined interval is provided between the joint and the leg opening.

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