JP6461237B2 - Disposable diapers with skirts - Google Patents

Description

  The present invention relates to a disposable diaper with a skirt.

  A pants-type disposable diaper is known as an absorbent article that absorbs excrement. As one form of such a pants-type disposable diaper, a structure in which a skirt is provided so as to cover a pants part mainly for women has been proposed. For example, in Patent Document 1, in a pant-type absorbent article (disposable swimsuit) having absorptivity, a skirt-shaped absorptive structure in which a skirt is covered from the top of the pant by joining a skirt member to the waist part of the pant. An article is disclosed.

JP 2009-179911 A

  However, in the absorbent article with a skirt like patent document 1, the additional material for forming a skirt part is needed, and a manufacturing cost becomes high. Further, in the manufacturing stage, the process becomes complicated by increasing the number of processes for joining the additional material to be the skirt to the pants.

  Moreover, generally a disposable diaper is formed with flexible materials, such as a nonwoven fabric. Therefore, there is a possibility that the skirt is easily rolled up as a whole, or when the skirt is rolled up, a force is applied to the joint portion between the skirt and the diaper and the joint portion is easily peeled off. Furthermore, there is a risk that the function, design, cuteness, etc. of the skirt may be impaired, such as the skirt becoming difficult to spread cleanly or conversely spreading too much.

  This invention is made | formed in view of the above problems, The objective is to provide the disposable diaper with a skirt which does not require a complicated process and can suppress manufacturing cost. .

  The main invention for achieving the above object is:

An absorbent article having a longitudinal direction and a transverse direction intersecting with the longitudinal direction, the absorbent article being provided along the longitudinal direction and absorbing excrement, and provided along the transverse direction A front belt member joined at one end in the longitudinal direction of the absorbent main body and a front joint, and the front belt member is provided along the lateral direction as a separate body, and the longitudinal length of the absorbent main body A rear band member joined at the other end portion in the direction and a rear joint portion, and the front belt member includes a front skirt portion on the lower side in the longitudinal direction than the front joint portion. The side band member is provided with a rear skirt part below the longitudinal direction with respect to the rear side joining part, and at least a part of both end parts of the front side band member and both end parts of the rear side band member in the lateral direction. Disposable diapers with skirts joined together in the region of In the central portion in the lateral direction, the front belt member includes a low elastic region having a predetermined width in the longitudinal direction at the front skirt portion, and at an upper end portion of the front belt member, with a high elastic region of the predetermined width, wherein the lateral tension acting on the low elasticity region, the high rather smaller than the transverse tension acting on the elastic region, the front band member A straight line connecting the lower end of the side edge joint part joining the both end parts of the rear side belt member and the both ends of the rear side belt member, and the lower end in the vertical direction and the outer side end in the horizontal direction of the front skirt part at the shortest distance, The disposable diaper with a skirt is characterized in that the larger one of the angles formed with the vertical direction is not less than 100 degrees and not more than 140 degrees .

  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 disposable diaper with a skirt that does not require complicated processing and can suppress the manufacturing cost.

It is the schematic perspective view which looked at the diaper 1 from the front side. It is the schematic plan view which looked at the diaper 1 which is an expansion | deployment and the expansion | extension state from the skin side. It is a figure explaining the structure of the absorptive main body. It is the schematic sectional drawing shown about the AA cross section in FIG. It is a schematic plan view when the diaper 1 in a natural state is viewed from the front side (abdominal side). It is a figure explaining the relationship between the front side junction part 51 and the rear side junction part 52, the side edge junction part 30ew, and the side edge junction part 40ew. It is a top view showing about the state where a part of skirt part 30s was rolled up by the diaper 1. FIG. It is a figure explaining the relationship between the front side junction part 51 and the rear side junction part 52 in the modification of the diaper 1, and the side edge junction part 30ew and the side edge junction part 40ew. It is a top view showing about the state where a part of front side skirt part 30s was rolled up in the modification of diaper 1. FIG.

  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 and a transverse direction intersecting with the longitudinal direction, the absorbent article being provided along the longitudinal direction and absorbing excrement, and provided along the transverse direction A front belt member joined at one end in the longitudinal direction of the absorbent main body and a front joint, and the front belt member is provided along the lateral direction as a separate body, and the longitudinal length of the absorbent main body A rear belt member joined at the other end portion in the direction and a rear joint portion, and the front belt member includes a front skirt portion on the lower side in the longitudinal direction than the front joint portion, and the rear belt member The member includes a rear skirt portion on the lower side in the longitudinal direction than the rear joint portion, and at least a part of both ends of the front belt member and both ends of the rear belt member in the lateral direction are at least a part. Disposable diapers with skirts joined together in the area In the central portion in the lateral direction, the front belt member includes a low elastic region having a predetermined width in the longitudinal direction at the front skirt portion, and at the upper end portion of the front belt member, A skirt having a high elastic region of a predetermined width, wherein the lateral tension acting on the low elastic region is smaller than the lateral tension acting on the high elastic region Disposable diaper with.

  According to such a disposable diaper with a skirt, a part of the front belt member can be easily functioned as a front skirt part. That is, a separate sheet member for forming the skirt and a special processing step are not required. Therefore, it is possible to realize a disposable diaper with a skirt that does not require complicated processing and can suppress the manufacturing cost.

  In such a disposable diaper with a skirt, in the longitudinal direction, the lower end position of the front side joining portion is lower than the lower end position of the side edge joining portion that joins both end portions of the front side band member and both end portions of the rear side band member. It is desirable that it is low.

  According to such a disposable diaper with a skirt, even if the front side skirt portion is bent on one side in the horizontal direction, the influence of the rotation is caused by being caught by the front side joint portion in the central portion in the horizontal direction. Propagation to the other side in the lateral direction can be suppressed. Thereby, it is suppressed that the whole front side skirt part rolls up.

  In such a disposable diaper with a skirt, in the longitudinal direction, the lower end position of the front side joining portion is lower than the lower end position of the side edge joining portion that joins both end portions of the front side band member and both end portions of the rear side band member. It is desirable that it is also high.

  According to such a disposable diaper with a skirt, even when the front skirt portion is rolled up, the force for pulling up the front skirt portion upward in the vertical direction is unlikely to act on the front joint portion. Thereby, joining of an absorptive main body and a front side belt member can be made hard to peel off.

  In such a disposable diaper with a skirt, it is desirable that the low elastic region does not have an elastic member.

  According to such a disposable diaper with a skirt, the difference between the lateral tension acting on the low elastic region and the lateral tension acting on the low elastic region is large, and the front skirt portion is likely to spread greatly, and the skirt A unique appearance can be formed. In addition, since the tension hardly acts in the low elastic region, the front skirt portion is easily deformed according to the movement of the wearer's body when the diaper is worn, and the wearer is less likely to feel uncomfortable or uncomfortable.

  In such a disposable diaper with a skirt, the low elastic region has a portion overlapped on the non-skin side in the thickness direction of the absorbent main body, and in the overlapped portion, through the low elastic region It is desirable that the absorbent main body is visible.

  According to such a disposable diaper with a skirt, the user can visually recognize a picture or a pattern attached to the surface of the absorbent main body even in a portion covered by the front skirt portion (low elastic region). Become. Therefore, even if it is a case where a front side skirt part is provided, it can suppress that the design property of a disposable diaper deteriorates.

  In such a disposable diaper with a skirt, it is desirable that the light transmittance in the low elastic region is larger than the light transmittance in the high elastic region.

  According to such a disposable diaper with a skirt, in the low elastic region, it becomes easy to visually recognize the absorbent main body through the front skirt portion, and deterioration in design can be suppressed. On the other hand, since the absorbent main body is difficult to visually recognize through the front belt member in the high elastic region, it is difficult for the user to cause anxiety that the diaper will be torn because the sheet member at the waistline opening is thin.

  In such a disposable diaper with a skirt, the number of sheet members laminated in the thickness direction in the low elasticity region is less than the number of sheet members laminated in the thickness direction in the high elasticity region, It is desirable.

  According to such a disposable diaper with a skirt, since the number of laminated sheet members is small in the low elastic region, the skirt portion is easily deformed freely, and an impression closer to the skirt can be given to the user. On the other hand, since the number of laminated sheet members is small in the high elasticity region, it is easy to ensure sufficient strength in the vicinity of the waistline opening.

  In such a disposable diaper with a skirt, at least two sheet members are laminated in the thickness direction in the front skirt portion, and the laminated sheet members are joined to the lower end portion of the low elasticity region. It is desirable that no adhesive is provided.

  According to such a disposable diaper with a skirt, the two or more non-woven fabrics spread independently at the skirt portion of the front skirt portion, so that the frills are laminated and the appearance of the skirt can be made more cute. Further, the touch at the skirt portion of the front skirt portion can be made softer.

  In such a disposable diaper with a skirt, in the central portion in the lateral direction, the rear band member includes a low elastic region having a predetermined width in the longitudinal direction at the rear skirt portion, and the rear skirt In the portion, at least two sheet members are laminated in the thickness direction, and an adhesive for joining the laminated sheet members is not provided at the lower end portion of the low elasticity region of the front skirt portion. The length in the longitudinal direction of the portion, and the length in the longitudinal direction of the portion where the adhesive for joining the laminated sheet members is not provided at the lower end of the low elasticity region of the rear skirt portion; It is desirable that they are different.

  According to such a disposable diaper with a skirt, since the shape and size of the frilled portion of the skirt can be made different before and after the diaper, the design and functionality of the diaper can be further improved.

  In such a disposable diaper with a skirt, it is desirable that the length of the front band member in the vertical direction is equal to the length of the rear band member in the vertical direction.

  According to such a disposable diaper with a skirt, materials of the same size can be used for the front side band member and the rear side band member, so that the manufacturing process is simplified and the manufacturing cost can be kept low. Moreover, even if the front band member and the rear band member have the same size, it is possible to easily determine the front-rear direction of the diaper according to the size and shape of the frills formed on the skirts of the front and rear skirts.

  In such a disposable diaper with a skirt, the front belt member has a plurality of elastic members arranged at predetermined intervals in the vertical direction, and is provided on the lowest side in the vertical direction among the plurality of elastic members. The position of the elastic member is preferably higher than the lower end position of the side edge joining portion that joins the both end portions of the front band member and the both end portions of the rear band member.

  According to such a disposable diaper with a skirt, a predetermined interval is formed between the elastic member disposed closest to the front skirt portion and the front skirt portion. Therefore, the lateral tension generated by the elastic member over the entire region of the front skirt portion is not easily affected, and the front skirt portion tends to have a shape that spreads out.

  In such a disposable diaper with a skirt, it is desirable that, in a natural state, the position of the lower end in the vertical direction of the skirt portion is higher than the position of the lower end in the vertical direction of the absorbent main body.

  According to such a disposable diaper with a skirt, since at least a part of the crotch part of the absorbent main body is exposed in a natural state, the user (wearer) can easily confirm the position of the leg-hole opening. Thereby, when putting a wearer's leg through a leg periphery opening at the time of diaper wear, it becomes difficult to produce problems, such as a leg getting caught.

  In such a disposable diaper with a skirt, it is preferable that the low elastic region has a different design from the high elastic region.

  According to such a disposable diaper with a skirt, the design of the front skirt portion can be improved. In addition, since the lateral tension is less likely to act in the low elasticity region, the pattern or the like attached to the front skirt portion is unlikely to shrink and the design is unlikely to deteriorate.

  Such a disposable diaper with a skirt, wherein a lower end of a side edge joining portion joining both end portions of the front side band member and both end portions of the rear side band member, a lower end in the vertical direction and the lateral direction of the front skirt portion It is desirable that the larger angle among the angles formed by the straight line connecting the outer end of each other at the shortest distance with the longitudinal direction is not less than 100 degrees and not more than 140 degrees.

  According to such a disposable diaper with a skirt, by setting the angle to 100 degrees or more, it becomes easy to prevent the front skirt portion from being rolled up. Moreover, it becomes easy to suppress that a front side skirt part will be in the closed state by making an angle into 140 degrees or less. Thereby, it becomes easy to form a skirt having a beautiful appearance.

  Such a disposable diaper with a skirt, in an extended state, a lower end of a side edge joining portion that joins both ends of the front side belt member and both ends of the rear side belt member, and a lower end in the longitudinal direction of the front side joining portion It is desirable that the smaller one of the angles formed by the straight line connecting the shortest distances with the lateral direction is not less than 10 degrees and not more than 30 degrees.

  According to such a disposable diaper with a skirt, by setting the angle to 10 degrees or more, the difference in height between the lower end position of the side edge joint portion and the lower end position of the front side joint portion becomes large, and the skirt curl becomes horizontal. It becomes easy to suppress propagation in the direction. In addition, by setting the angle to 30 degrees or less, the position of the side edge joint portion becomes too high and the joining strength becomes insufficient, or the position of the lower end portion of the front side joint portion becomes too low and the front skirt portion However, it becomes easy to suppress that it becomes difficult to ensure a sufficient area.

  Such a disposable diaper with a skirt has leg elastic members along the longitudinal direction on both sides of the absorbent main body in the lateral direction, and the leg elastic members and the leg elastics in the thickness direction. It is desirable that the member has a portion where the front side joint portion overlaps.

  According to such a disposable diaper with a skirt, even when the front skirt portion is rolled up, the force of pulling the front skirt portion upward is easily offset by the contraction force of the leg-around elastic member. Thereby, the rolling-up of a front side skirt part can be suppressed efficiently.

=== Embodiment ===
<Configuration of disposable diaper with skirt>
As an example of the absorbent article according to the embodiment, a disposable diaper 1 with a skirt (hereinafter also simply referred to as diaper 1) will be described. FIG. 1 is a schematic perspective view of the diaper 1 viewed from the front side. FIG. 2 is a schematic plan view of the diaper 1 in the unfolded and extended state as seen from the skin side. FIG. 3 is a diagram illustrating the structure of the absorbent main body 10. FIG. 4 is a schematic cross-sectional view showing the AA cross-section in FIG. In addition, the "elongation state" in FIG. 2 is the state which extended the product (diaper 1) thoroughly, specifically, each member (for example, the below-mentioned absorptive main body 10 and the front side belt member which comprises diaper 1) 30) or the like is equal to or close to the dimension of the member itself.

The diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction as three directions orthogonal to each other in the pants-type state of FIG. In the following, the upper side in the vertical direction in this pant-type state is also referred to as the “trunk opening side”, and the lower side in the vertical direction is also referred to as the “inseam side”.
The front side in the front-rear direction is also referred to as “abdominal side”, and the rear side is also referred to as “back side”.

  On the other hand, in the developed state of FIG. 2, the diaper 1 has a longitudinal direction and a width direction as three directions orthogonal to each other. In the following description, the one side and the other side in the longitudinal direction in the developed state are also referred to as “abdominal side” and “back side”, respectively. In addition, said width direction in the expansion | deployment state is the same direction as said horizontal direction in a pants type state. Therefore, in the following, the width direction is also referred to as “lateral direction”. Moreover, the longitudinal direction of the unfolded state is a direction along the longitudinal direction of the pants-type state. In addition, as shown in FIG. 4, the direction perpendicular to the longitudinal direction (longitudinal direction) and the lateral direction (width direction) is referred to as the “thickness direction”, and the side that comes into contact with the wearer's skin is referred to as the “skin side”. The opposite side is referred to as the “non-skin side”.

  As shown in FIG. 1, the diaper 1 is a so-called three-piece type diaper and has three parts 10, 30, and 40. That is, this diaper 1 has an absorbent main body 10 that is applied to the wearer's crotch as a first part and absorbs excrement such as urine, and as a second part from the front side of the wearer to the stomach side. It has the front side belt member 30 which covers a part, and has the back side belt member 40 which covers a back side part from the back side of the wearer as a 3rd part.

  As shown in FIG. 2, when the diaper 1 is unfolded, the front band member 30 and the rear band member 40 are arranged in parallel with a gap in the longitudinal direction (longitudinal direction). The sex body 10 is stretched over. And the one end part 10ea of the longitudinal direction of the absorptive main body 10 is joined with the front side belt member 30, the other end part 10eb of the longitudinal direction of the absorptive main body 10 is joined and fixed to the rear side band member 40, and the external shape is It has a substantially H shape in plan view.

  And from this state, the absorptive main body 10 is folded in half with the substantially central portion C10 in the longitudinal direction as a folding position. In this folded state, the front belt member 30 and the rear belt member 40 that are opposed to each other are the side edge joint portion 30ew and the side edge joint portion 40ew that are to be in contact with the wearer's flank. When joined and connected at each end in the direction), the band members 30 and 40 are formed into an annular shape. Thereby, it becomes the diaper 1 of the wearing condition in which the trunk periphery opening 1HB and a pair of leg periphery opening 1HL as shown in FIG. 1 were formed. In addition, the side edge joint part 30ew and the side edge joint part 40ew are provided in the partial area | region of the vertical direction among the both sides of the horizontal direction of the front side belt member 30 and the rear side belt member 40, respectively (refer FIG. 2). ). That is, in the front side belt member 30 and the rear side belt member 40 of the diaper 1, the entire side portions are not joined together, and in FIG. 2, the lower ends of the front side belt member 30 and the rear side belt member 40 are not joined. .

  The absorptive main body 10 has a function of absorbing excrement such as urine, has a substantially rectangular shape in a plan view as shown in FIG. 3, and has a longitudinal center along the longitudinal direction of the diaper 1 while maintaining the center in the lateral direction. Is arranged. The absorbent main body 10 includes an absorbent core 11, a surface sheet member 13 that covers the absorbent core 11 so as to be wrapped from the skin side, and the absorbent core 11 that covers the absorbent core 11 from the non-skin side of the core 11. And a back sheet member 15 that forms the exterior.

  The absorbent core 11 is a member formed by laminating liquid absorbent materials, and can absorb excrement such as urine. As the liquid absorbent material, for example, liquid absorbent fibers such as pulp fibers can be used. In addition, the absorptive core 11 may contain, for example, a superabsorbent polymer as a liquid absorptive granule, or contains a liquid absorptive material other than a liquid absorptive fiber and a liquid absorptive granule. Also good. Moreover, the absorptive core 11 may be coat | covered with liquid permeable sheets (not shown), such as tissue paper.

  The absorptive core 11 of this embodiment has a ventral end 11a which is an upper end in the vertical direction in FIG. 3 and a back end 11b which is a lower end in the vertical direction in FIG. And between the abdominal side edge part 11a and the back | dorsal side edge part 11b, it has the narrow part 11c whose width | variety of a horizontal direction is narrower than the abdominal side edge part 11a and the back side edge part 11b. Thereby, the absorptive core 11 is comprised so that it may become a substantially hourglass shape in planar view as shown in FIG.

  The surface sheet member 13 is a sheet-like member that covers the absorbent core 11 from the skin side, and is, for example, a liquid-permeable nonwoven fabric having a larger planar size than the absorbent core 11. Further, the back sheet member 15 is a sheet-like member that covers the absorbent core 11 from the non-skin side, and is a planar sheet that is larger than the absorbent core 11, and an example thereof is liquid such as polyethylene or polypropylene. A sheet having a two-layer structure in which a permeable leak-proof sheet 15a and an exterior sheet 15b such as a nonwoven fabric are bonded to each other can be used.

  In the diaper 1, as shown in FIG. 3, so-called three-dimensional gathers LSG and leg gathers LG are formed by the exterior sheet 15b. The three-dimensional gather LSG is a leak-proof wall portion provided upright at each lateral end portion of the top sheet member 13, while the leg gathers LG are formed in the leg-openings 1 HL and 1 HL of the diaper 1. It is a leg-around elastic part to be formed. The exterior sheet 15b protrudes greatly in the lateral direction from both lateral sides of the leak-proof sheet 15a, and the protruding part 15bf has a lateral end of the absorbent main body 10 at the folding position toward the center in the lateral direction. The leg-around elastic member 17 such as rubber thread and the leg-around auxiliary elastic member 19 are fixed in the longitudinal direction in the vicinity of the turn-up position in the vicinity of the turn-up position. A gather LG is formed. In addition, the leg periphery auxiliary | assistant elastic member 19 is not necessarily required, and the leg periphery gathers LG may be formed only by the leg periphery elastic member 17. FIG. The folded portion further extends toward the center in the lateral direction, and is joined to the end portion at a position covering the lateral end portion of the top sheet member 13. And the part joined to this end part functions as the base end part LSGb of the three-dimensional gather LSG, that is, the part on the tip side in the lateral direction further than the base end part LSGb serves as the free end part LSGf. 13 can stand up. In addition, an LSG elastic member 18 such as a thread rubber is fixed to the distal end portion of the free end portion LSGf in a state of being extended in the vertical direction along the vertical direction. Therefore, due to the contraction of the LSG elastic member 18 in the vertical direction, the absorbent main body 10 is bent in the vertical direction so that the surface sheet member 13 side becomes the inner peripheral side. The free end portion LSGf contracts in the vertical direction and rises from the top sheet member 13 due to the contraction force, whereby the free end portion LSGf functions as a three-dimensional gather LSG.

  In some cases, a liquid permeable material such as tissue paper is used as a second sheet between the top sheet member 13 and the absorbent core 11 or between the back sheet member 15 and the absorbent core 11 (see FIG. 3). A sheet may be interposed.

  Each of the front band member 30 and the rear band member 40 is a sheet member having a substantially rectangular shape in a plan view made of a flexible sheet such as a nonwoven fabric (see FIG. 2).

  As shown in FIG. 4, the front belt member 30 is formed by joining two nonwoven fabrics 31 and 32 in a thickness direction. Between the two nonwoven fabrics 31, 32, a plurality of elastic members 35, 35... Such as thread rubber are arranged along the lateral direction. The elastic members 35, 35... Are joined and fixed to the nonwoven fabrics 31, 32 while being stretched in the horizontal direction while being inserted in the vertical direction with a gap in the vertical direction. Thereby, the front belt member 30 can be stretched in the lateral direction. The nonwoven fabrics 31 and 32 are joined to each other via an adhesive provided on the surface of the elastic member 35. In this embodiment, since the elastic member 35 is not disposed in the region below the side edge joint portion 30ew in the vertical direction (see FIG. 2), the nonwoven fabrics 31 and 32 are joined to each other in the region. Are separately provided (see FIG. 4).

  Moreover, the non-skin-side nonwoven fabric 32 protrudes above the upper end in the longitudinal direction of the skin-side nonwoven fabric 31 on the upper side in the vertical direction of the front side band member 30 (the waist opening side), and the protruding portion is folded back to the skin side. A front folded portion 32 f is formed, and the front folded portion 32 f is bonded and fixed to the skin side of the nonwoven fabric 31. Thereby, the upper end 30ea of the front belt member 30 is covered by the front folded portion 32f, and the edge of the upper end 30ea is less likely to bite into the wearer's skin (abdominal waistline) when the diaper 1 is worn, resulting in discomfort during wearing. It can be made difficult to occur. On the other hand, the nonwoven fabrics 31 and 32 are not joined to each other at the lower end 30eb of the front belt member 30, and so-called dry edges are formed with a predetermined width. In FIG. 4, a dry edge having a predetermined interval LD30 is provided between the lower ends (30eb) of the nonwoven fabrics 31 and 32 and the joining portion 37.

  The front belt member 30 and the absorbent main body 10 are joined in the thickness direction via the front joint 51. The front joint 51 is formed by using a joining means such as welding or adhesion. In this embodiment, the front joint 51 is formed using, for example, a hot melt adhesive. And the diaper 1 has the area | region where the front side belt member 30 is not joined to the absorptive main body 10 below the front side junction part 51 in the vertical direction. In the unjoined region, the front side band member 30 can be deformed independently with respect to the absorbent main body 10, and when the diaper 1 is formed into a pants shape as shown in FIG. A front skirt portion 30s that functions as described above is formed. That is, the front belt member 30 includes a front skirt portion 30 s on the lower side in the vertical direction than the front joint portion 51. In FIG. 4, in the vertical direction, the front band member 30 and the absorbent main body 10 are bonded in a region having a length of L30s between the lower end 51eb of the front side bonding portion 51 and the lower end 30eb of the front side band member 30. This region that is not joined becomes the front skirt portion 30s.

  The rear band member 40 has a structure substantially similar to that of the front band member 30. That is, the rear side belt member 40 is formed by joining the nonwoven fabrics 41 and 42 in the thickness direction, and a plurality of elastic members 45 and 45 such as thread rubber are provided between the nonwoven fabrics 41 and 42 in the thickness direction. Are joined and fixed in a state of being stretched in the lateral direction. As a result, the rear belt member 40 is given lateral stretchability. Moreover, the junction part 47 for joining the nonwoven fabrics 41 and 42 mutually is provided in the area | region below the vertical direction rather than the side edge junction part 40ew (refer FIG. 4).

  Then, on the upper side in the longitudinal direction of the rear belt member 40 (the waistline opening side), the non-skin-side nonwoven fabric 42 projects above the upper end in the longitudinal direction of the skin-side nonwoven fabric 41, and the projecting portion is folded back to the skin side. Thus, the rear folded portion 42f is formed. On the other hand, at the lower end 40eb of the rear band member 40, the nonwoven fabrics 41 and 42 are not joined to each other, and a so-called dry edge is formed (see FIG. 4). That is, a predetermined interval (LD 40) is provided between the lower ends of the nonwoven fabrics 41 and 42 and the joint portion 47.

  The rear band member 40 and the absorbent main body 10 are bonded in the thickness direction via the rear bonding portion 52. The rear side joining part 52 is formed using, for example, a hot melt adhesive. The diaper 1 has a region where the rear band member 40 is not bonded to the absorbent main body 10 on the lower side in the vertical direction than the rear bonding portion 52. In the unjoined region, the rear band member 40 can be deformed independently with respect to the absorbent main body 10 and functions as a skirt when the diaper 1 is formed into a pants shape. A side skirt portion 40s is formed. That is, the rear band member 40 includes a rear skirt portion 40 s on the lower side in the vertical direction than the rear joint portion 52. In FIG. 4, in the longitudinal direction, the rear band member 40 and the absorbent main body 10 are bonded in a region having a length of L40s between the lower end 52eb of the rear side bonding portion 52 and the lower end 40eb of the rear side band member 40. This region that is not joined becomes the rear skirt portion 40s.

  Moreover, in FIG. 4, the sheet | seat member 38 which covers the one end part 10ea of the longitudinal direction of the absorptive main body 10 and the lower end 32feb of the front side folding | returning part 32f from the skin side is provided. The sheet member 38 makes it difficult for the edges of the one end portion 10ea and the lower end 32feb to bite into the wearer's skin when the diaper 1 is worn, making it less likely to cause discomfort during wearing. Similarly, the sheet | seat member 48 which covers the other end part 10eb of the longitudinal direction of the absorptive main body 10 and the lower end 42feb of the back side folding | returning part 42f from the skin side is provided. The sheet member 48 makes it difficult for the edges of the other end portion 10eb and the lower end 42feb to bite into the wearer's skin when the diaper 1 is worn, making it less likely to cause discomfort during wearing. However, in the diaper 1, the sheet members 38 and 48 are not necessarily provided.

  A part of the elastic member 35 may be cut at a portion where the front belt member 30 and the absorbent main body 10 (absorbent core 11) overlap in the thickness direction. In the present embodiment, a part of the elastic member 35 disposed in the region overlapping with the front side joint portion 51 is cut (see FIG. 1), so that the stretchability by the elastic member 35 does not appear in the region. I have to. Thereby, it is suppressed that the absorptive main body 10 shrink | contracts excessively to a horizontal direction, and it can make it easy to suppress the side leakage etc. of excrement. Similarly, a part of the elastic member 45 may be cut at a portion where the rear band member 40 and the absorbent main body 10 overlap in the thickness direction. In the present embodiment, a part of the elastic member 45 disposed in the region overlapping with the rear side joint portion 52 is cut, so that the stretchability by the elastic member 45 is not expressed in the region, thereby absorbing the elastic member 45. Excessive shrinkage of the main body 10 in the lateral direction is suppressed.

<About the skirt>
Next, a specific configuration and function of the skirt portion will be described. As described above, since the configuration of the rear skirt portion 40s is substantially the same as that of the front skirt portion 30s, only the front skirt portion 30s will be described below, and a detailed description of the rear skirt portion 40s will be omitted. .

  FIG. 5 is a schematic plan view when the diaper 1 in a natural state is viewed from the front side (abdominal side). The “natural state” is a state when the diaper 1 is left for a predetermined time. For example, after the front band member 30 and the rear band member 40 of the diaper 1 are pulled outward in the lateral direction, the band members 30 and 40 are set in the “extended state”, and this extended state is continued for 15 seconds. Release the tension and place it on a flat surface such as a desk. And the state which passed for 5 minutes by such plane flat placing is made into a natural state.

  As shown in FIG. 5, in the diaper 1, in the front belt member 30, the front skirt portion 30 s on the lower side in the vertical direction than the front joint portion 51 spreads on the lower side in the vertical direction and on the outer side in the horizontal direction. The whole diaper 1 has a skirt-like silhouette. This is because the elastic member 35 such as rubber thread is not disposed in the front skirt portion 30 s at the lower end in the vertical direction of the front band member 30, and is difficult to contract in the horizontal direction. This is because the upper end portion is easily contracted in the lateral direction by the elastic member 35. That is, the diaper 1 includes a low elastic region LER having a predetermined width (for example, a length L30s in FIG. 4) in the longitudinal direction at the front skirt portion 30s at least in the central portion in the lateral direction, and the front belt member 30. A high elastic region HER is provided in a region having the same predetermined width as described above (see FIG. 2). The lateral tension acting on the low elasticity region LER is smaller than the lateral tension acting on the high elasticity region HER. Therefore, the front skirt portion 30s formed at the lower end portion of the front side band member 30 is less likely to contract laterally than the upper end portion of the front side band member 30, and the skirt shape as shown in FIG.

  The magnitude of the lateral “tension” acting on each region can be measured as follows. First, an adhesive or the like is used on the skin side surface (or may be a non-skin side surface) in a region between one end in the lateral direction (for example, the left end) and the center in the lateral direction in the front belt member 30 in the natural state. Then, the reinforcing sheet member is joined. Next, a cut along the vertical direction is made in a range (for example, a length of L30s × 2) longer than the vertical length of the highly elastic region HER at the central position in the horizontal direction, so that the front belt member 30 and the elastic member 35 is cut. Then, the elastic member 35 tends to contract from the lateral center (cut position) toward the lateral outside (one end), so that the cut position does not move from the lateral center position. A tension measuring instrument or the like is used to grip the reinforcing sheet member and apply a force against the elastic member 35 contracting in the lateral direction. At this time, the magnitude of the force measured by the tension measuring instrument can be the magnitude of the “tension” in the present embodiment. The magnitude of the tension can be similarly measured for the low elastic region LER.

  If it is such a structure, a part of front side belt member 30 among the members which comprise the diaper 1 can be easily functioned as the front skirt part 30s. That is, a sheet member separate from the front belt member 30 is provided to form a skirt, or special processing (for example, cutting processing or joining processing to form a skirt) is performed to function as a skirt. There is no need to Therefore, it is possible to realize a disposable diaper with a skirt that does not require complicated processing and can suppress the manufacturing cost.

  In the diaper 1 of this embodiment, since the elastic member (elastic member 35) is not provided in the entire low elastic region LER, the lateral tension acting on the front skirt portion 30s is substantially zero. Therefore, the difference in tension with the high elasticity region HER is increased, and the front skirt portion 30s is likely to spread greatly as shown in FIG. In addition, since the tension does not easily act, the front skirt portion 30s is easily deformed in accordance with the movement of the wearer's body when the diaper 1 is worn, and the wearer is less likely to feel discomfort or discomfort.

  In the diaper 1 of the present embodiment, the shape when the front skirt portion 30s expands in the natural state satisfies the following conditions. That is, in FIG. 5, the straight line connecting the lower end 30ewb of the side edge joint portion 30ew and the end point 30sebs which is the lower end in the vertical direction and the outer end in the horizontal direction of the front skirt portion 30s at the shortest distance is the angle formed by the vertical direction. If the larger angle is θ30s, 180 degrees ≧ θ30s ≧ 90 degrees. Furthermore, 140 degrees ≧ θ30s ≧ 100 degrees is desirable. When θ30s is larger than 180 degrees (140 degrees), the front skirt portion 30s is closed, and conversely when θ30s is smaller than 90 degrees (100 degrees), the front skirt portion 30s is swollen. End up. On the other hand, if the magnitude of θ30s is within the above range, a skirt that is beautiful in appearance is formed, and the problem that the design and cuteness are impaired is unlikely to occur.

  By the way, when the front skirt portion 30s can be freely deformed, the entire front skirt portion 30s is rolled up when the diaper 1 is worn, and there is a possibility that the function as the skirt may not be exhibited. However, in the diaper 1, by adjusting the positional relationship between the front side joint portion 51 and the side edge joint portion 30ew, it is easy to suppress the entire front skirt portion 30s from rolling up. FIG. 6 is a diagram for explaining the relationship between the front side joint 51 and the rear side joint 52, and the side edge joint 30ew and the side edge joint 40ew. FIG. 6 shows a state in which the diaper 1 is unfolded and extended as in FIG. FIG. 7 is a plan view illustrating a state in which a part of the front skirt portion 30 s is rolled up in the diaper 1.

  When the front skirt portion 30s is rolled up when the diaper 1 is worn, first, the free end portions at both ends in the lateral direction are often rolled up. FIG. 7 shows a state in which the left end (end point 30 sebs) of the front skirt portion 30 s is rolled up. In addition, when the left end of the front skirt portion 30s is rolled up, first, it is rolled up to the position of the lower end 30ewb of the side edge joint portion 30ew formed on the left side of the front band member 30. Then, the curl of the front skirt portion 30s propagates from the lateral left side (outer side) to the right side (center side) so as to be pulled up by the curled up left end. However, in the diaper 1, as shown in FIG. 6, the position of the lower end 51 eb of the front side joint portion 51 is lower than the position of the lower end 30 ewb of the side edge joint portion 30 ew in the vertical direction. As a result, the front skirt portion 30 s that has been rolled up to the height of the lower end 30 ewb at the left end in the horizontal direction can only be rolled up to the position of the lower end 51 eb that is lower than the lower end 30 ewb in the front side joint portion 51. That is, the front side joint portion 51 provided in the central portion in the horizontal direction suppresses the wrinkles of the front skirt portion 30 s from propagating in the horizontal direction. In other words, even if the front skirt portion 30s is bent on one side in the horizontal direction (left end portion in FIG. 7), the front skirt portion 30s is formed on the other side in the horizontal direction (right end portion in FIG. 7). Is hard to drown. Therefore, it is easy to prevent the entire front skirt portion 30s from curling up.

  In the diaper 1 of the present embodiment, the relationship between the lower end 51eb of the front side joint portion 51 and the lower end 30ewb of the side edge joint portion 30ew satisfies the following conditions. That is, in the front belt member 30 in the extended state as shown in FIG. 6, the straight line connecting the lower end 51 eb of the front joint 51 and the lower end 30 ewb of the side edge joint 30 ew in the shortest distance is the angle formed by the lateral direction. When the smaller angle is θ51eb, 45 degrees ≧ θ51eb ≧ 5 degrees. Furthermore, 30 degrees ≧ θ51 eb ≧ 10 degrees is desirable. If θ51eb is smaller than 5 degrees (10 degrees), the position of the lower end 51eb and the height of the lower end 30ewb become substantially equal, and it is difficult to suppress the skirt's curvature from propagating in the lateral direction. On the other hand, when θ51eb is larger than 45 degrees (30 degrees), the position of the lower end 30ewb of the side edge joint portion 30ew is increased, and the side edge joint portion 30ew cannot be formed with an appropriate size, and the bonding strength may be insufficient. is there. In addition, the position of the lower end 51eb of the front joint portion 51 is lowered, and there is a possibility that the front skirt portion 30s may have difficulty in securing a sufficient area. On the other hand, if the magnitude of θ51eb is within the above-described range, it is possible to effectively prevent the front skirt portion 30s from rolling up without causing a problem in the structure of the diaper 1.

  Moreover, in a general disposable diaper, design may be improved by attaching a picture or a pattern to the exterior of the absorbent main body (corresponding to the back sheet member 15) by means such as printing. When a skirt is provided on such a diaper, the picture or pattern attached to the absorbent main body is hidden by the skirt, and the design may be deteriorated. In particular, in the diaper 1, when the front skirt portion 30 s has a structure that is difficult to bend as described above, the pattern or the like of the absorbent main body 10 is difficult to be visually recognized. Therefore, in the diaper 1, when viewed from the non-skin side in the thickness direction, the absorbent main body 10 is made visible through the front skirt portion 30s. In other words, in the part where the front skirt portion 30s and the absorbent main body 10 are overlapped in the thickness direction, the absorbent main body 10 is visible through the low elastic region LER. Thereby, even if it is a case where 30 s of front side skirt parts are provided, it can suppress that the design property of the diaper 1 deteriorates.

  Specifically, in the diaper 1, by making the light transmittance in the low elastic region LER larger than the light transmittance in the high elastic region HER, the absorbent main body 10 can be easily seen through the front skirt portion 30s. Yes. The light transmittance can be measured by, for example, a test method based on JIS Z8722. With such a configuration, in the low elastic region LER, the absorbent main body 10 can be easily seen through the front skirt portion 30s. On the other hand, in the highly elastic region HER, the absorbent main body 10 becomes difficult to visually recognize through the front side belt member 30. Assuming that the absorbent main body 10 can be visually recognized through the front belt member 30 in the highly elastic region HER provided in the vicinity of the waistline opening, the waistline opening portion in which a large force is likely to act on the user (wearer) during wearing. There is a fear that the sheet member is thin and anxiety may occur that the diaper 1 is torn. On the other hand, since the diaper 1 has low light transmittance in the highly elastic region HER and it is difficult to visually recognize the absorbent main body 10, it is difficult to cause anxiety for the user or the like.

  In the diaper 1, the number of members (sheet members) stacked in the thickness direction in the low elastic region LER is larger than the number of members (sheet members) stacked in the thickness direction in the high elastic region HER. Few. Specifically, the members laminated in the thickness direction in the low elastic region LER (front skirt portion 30s) are two nonwoven fabrics 31 and 32, whereas in the high elastic region HER, the members are stacked in the thickness direction. The laminated members are the non-woven fabrics 31 and 32, the sheet member 38, and the front folded portion 32f. As a result, the above-described light transmission relationship is easily established, and the number of laminated sheet members in the low elastic region LER is small, so that the skirt portion is easily deformed. Therefore, the front skirt portion 30s is likely to be frilled, and an impression closer to the skirt can be given to the user (wearer). On the other hand, since the number of laminated sheet members is large in the high-elasticity region HER, it is easy to ensure sufficient strength at the waistline opening, and the problem that the diaper 1 is torn when worn is difficult to occur.

  Furthermore, in the diaper 1, the design on the appearance is different between the low elastic region LER and the high elastic region HER. In the example of FIG. 1, the front belt member 30 is plain in the high elastic region HER, whereas the surface of the front belt member 30 is wavy in the low elastic region LER (front skirt portion 30 s). As described above, since the tension is less likely to act in the low elastic region LER, the pattern or the like attached to the front skirt portion 30s is unlikely to shrink, and the design is unlikely to deteriorate. Thereby, while improving the design property of the front side skirt part 30s provided in the diaper 1, it can make it easy for a wearer to recognize this front side skirt part 30s. In addition, as a method of making the design different in the low elastic region LER and the high elastic region HER, the color may be changed, embossing may be applied to a part of the nonwoven fabric, or other methods may be used. There may be.

  Further, a dry edge as described with reference to FIG. 4 is formed at the lower end 30eb of the front band member 30 of the diaper 1. That is, no adhesive is provided on the skirt (lower end 30eb) of the front skirt portion 30s, and the nonwoven fabrics 31 and 32 are not joined to each other. Therefore, the nonwoven fabrics 31 and 32 are spread independently at the skirt portion of the front skirt portion 30s so that the frills are laminated, and the appearance of the skirt can be made more cute. And since the nonwoven fabrics 31 and 32 laminated | stacked on the thickness direction are not mutually joined, the touch of the skirt (lower end 30eb) of the front skirt part 30s becomes softer. Since this hem portion is a portion that is highly likely to come into contact with the wearer's leg when the diaper 1 is worn (see FIG. 1 and the like), the frill-like soft touch makes the wear feeling good. can do.

  Further, the position of the lower end of the nonwoven fabric 31 and the position of the lower end of the nonwoven fabric 32 may be shifted in the longitudinal direction. For example, the lower end position of the non-skin side nonwoven fabric 31 is made lower than the lower end position of the non-skin side nonwoven fabric 31 in the longitudinal direction. In this way, when viewed from the outside, the laminated structure of the nonwoven fabrics 31 and 32 is more easily recognized, and the double structure of the frills becomes conspicuous, so the appearance of the diaper 1 is further improved. Can be made.

  The vertical width (length) of the dry edge at the lower end may be changed between the front skirt portion 30s and the rear skirt portion 40s. That is, the length of the interval LD30 between the lower end 30eb of the front skirt portion 30s and the lower end of the joint portion 37 is different from the length of the interval LD40 between the lower end 40eb of the rear skirt portion 40s and the lower end of the joint portion 47. May be. In this way, the shape and size of the frilled portion of the skirt can be made different before and after the diaper 1, so that the design and functionality of the diaper 1 can be further improved. For example, the dry edge interval LD40 in the rear skirt portion 40s is made longer than the dry edge interval LD30 in the front skirt portion 30s. In this case, the front side has a simple design with a small frill, and it is possible to make it difficult to prevent movement of the wearer's leg when worn. On the other hand, the wearer's buttocks side can be widely covered with a large frill on the rear side.

  In the diaper 1, the length of the front band member 30 and the length of the rear band member 40 in the vertical direction are equal. With such a structure, the same size material can be used for the front side band member 30 and the rear side band member 40, so that the manufacturing process is simplified and the manufacturing cost can be kept low. On the other hand, when the front band member 30 and the rear band member 40 are the same size, the appearance shape is similar before and after the diaper 1, so it becomes difficult to determine the front and back of the diaper 1, and the front and back are mistaken when worn. There is a risk of wearing it. On the other hand, if the size of the frilled portion of the skirt (the length of the dry edge) is changed before and after the diaper 1 as described above, the appearance of the diaper 1 will be different between the front and back. In addition to improving the design, the user (wearer) can easily determine the front and back of the diaper 1.

  However, in the diaper 1, the length of the front band member 30 in the vertical direction and the rear band member 40 are not necessarily the same. For example, the length of the rear band member 40 in the vertical direction may be longer than the length of the front band member 30 so that the skirt is longer on the wearer's buttocks side.

  In the front belt member 30, the lowermost elastic member 35b among the plurality of elastic members 35 arranged in the vertical direction is arranged at a position higher than the lower end 30ewb of the side edge joint portion 30ew in the vertical direction. (See FIG. 2). The elastic member 35b is an elastic member disposed at a position closest to the front skirt portion 30s in the vertical direction. That is, the front skirt portion 30s is most easily affected by the lateral tension generated by the elastic member 35b. However, as described above, in the longitudinal direction of the diaper 1, the position of the lower end 30ewb of the side edge joint portion 30ew is higher than the position of the upper end of the front skirt portion 30s (that is, the lower end 51eb of the front side joint portion 51) and is elastic. The position of the member 35b is higher than the position of the lower end 30ewb of the side edge joint portion 30ew. Therefore, the lateral tension generated by the elastic member 35b over the entire area of the front skirt portion 30s is not easily affected, and the front skirt portion 30s can be freely deformed and tends to have a shape that spreads out.

  Further, the position of the lower end 30eb of the front skirt portion 30s (front side band member 30) in the natural state is the lower end position of the diaper 1 in the height direction (a position corresponding to the substantially central portion C10 in the longitudinal direction of the absorbent main body 10). Is on the upper side. That is, as shown in FIG. 1 and FIG. 5, in the diaper 1 in a natural state, the absorbent main body 10 is not completely covered by the front skirt portion 30s, but at least one crotch portion of the absorbent main body 10 is provided. The part is exposed. And since the crotch part of the absorptive main body 10 is exposed, the user (wearer) can visually recognize at least one part of the leg periphery opening 1HL. Thereby, when wearing the diaper 1, it becomes easy to confirm the position of the leg periphery opening 1HL, and when passing a wearer's leg through the leg periphery opening 1HL, it can suppress that a leg gets caught.

  Moreover, in the diaper 1, the leg periphery elastic member 17 (and leg periphery auxiliary | assistant elastic member 19) provided in the leg periphery gather LG has a part which overlaps with the front side junction part 51 in thickness direction (refer FIG. 2). ). The leg-surround elastic member 17 expresses a force that causes the absorbent main body 10 to contract along the longitudinal direction (that is, the longitudinal direction). In this state, when the front skirt portion 30s is rolled up as shown in FIG. 7, a force is applied to pull the front skirt portion 30s upward in the vertical direction. Then, the front skirt portion 30 s is pulled downward in the vertical direction via the front joint portion 51 due to the contraction force of the leg-around elastic member 17. That is, the contraction force by the leg elastic member 17 acts as a reaction force of the force that lifts the front skirt portion 30s upward, and the force pulling the front skirt portion 30s upward is easily offset. Thereby, it is possible to easily prevent the front skirt portion 30s from curling.

<Modification>
Although the positional relationship in the vertical direction between the lower end 51eb of the front joint 51 and the lower end 30ewb of the side edge joint 30ew has been described with reference to FIG. 6, this relationship can be modified as follows. FIG. 8 is a diagram for explaining a relationship among the front side joint portion 51 and the rear side joint portion 52, the side edge joint portion 30ew, and the side edge joint portion 40ew in a modification of the diaper 1. FIG. 9 is a plan view illustrating a state in which a part of the front skirt portion 30 s is rolled up in a modification of the diaper 1.

  As shown in FIG. 8, in the diaper 1 of the modified example, the position of the lower end 51 eb of the front side joint portion 51 is higher than the position of the lower end 30 ewb of the side edge joint portion 30 ew in the vertical direction. About another structure, it is substantially the same as the diaper 1 mentioned above.

When the front skirt portion 30s is rolled up in the diaper 1 of the modified example, as in the case of FIG. 7, first, the free end portions at both lateral ends of the front skirt portion 30s are positioned at the lower end 30ewb of the side edge joint portion 30ew. I'm drowning. FIG. 9 shows a state in which the left end of the front skirt portion 30s is rolled up. Then, the curl of the front skirt portion 30s propagates from the left side in the lateral direction to the right side so as to be pulled up by the left side end that has been curled up. At this time, since the position of the lower end 51eb of the front side joint portion 51 is higher than the position of the lower end 30ewb of the side edge joint portion 30ew, the front skirt portion 30s hardly rises at the height of the lower end 51eb of the front side joint portion 51. Accordingly, in the present modification, even when the front skirt portion 30s is rolled up, the force for pulling up the front skirt portion 30s to the upper side in the vertical direction is unlikely to act on the front side joint portion 51. That is, even when the front side skirt portion 30s is rolled up, the bonding between the absorbent main body 10 and the front side band member 30 is difficult to peel off. Such a configuration is particularly effective when the front joint portion 51 is small and it is difficult to keep the joint strength strong, and can be applied to, for example, small diapers for infants.
=== Other Embodiments ===

  As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, the material of the exterior sheet 15b, the front belt member 30, and the rear belt member 40 is a non-woven fabric, but is not limited to any non-woven fabric. For example, a woven fabric or a sheet member other than the woven fabric may be used. Incidentally, the exterior sheet 15b may be omitted, and in that case, the leak-proof sheet 15a forms the exterior of the absorbent main body 10.

  In the above-described embodiment, the rubber thread is illustrated as the elastic member 35, but the elastic member 35 is not limited to this. For example, a belt-like rubber may be used as the elastic member 35, a belt-like non-woven fabric having elasticity or a belt-like resin film having elasticity.

1 diapers (disposable diapers with skirts, absorbent articles),
1HB waist opening, 1HL leg opening,
10 Absorbent body, 10ea end, 10eb end,
10es end, 10p part,
11 Absorbent core,
11a ventral end, 11b dorsal end, 11c constriction,
13 Surface sheet member,
15 Back sheet member,
15a leakage prevention sheet, 15b exterior sheet, 15bf part,
17 leg elastic member, 18 LSG elastic member, 19 leg auxiliary elastic member,
30 front band member,
30ea upper end, 30eb lower end,
30 ew side edge joint, 30 ewb lower end,
30s front skirt, 30sebs end point,
31 non-woven fabric, 32 non-woven fabric, 32f front folded portion, 32feb lower end,
35 elastic member, 35b elastic member, 37 joint, 38 sheet member,
40 rear belt member,
40ea upper end, 40eb lower end,
40 ew side edge joint, 40 ewb lower end,
40s Rear skirt,
41 non-woven fabric, 42 non-woven fabric, 42f rear folded portion, 42feb lower end,
45 elastic member, 47 joint, 48 sheet member,
51 front joint, 51eb bottom,
52 rear joint, 52eb lower end,
HER high elasticity region, LER low elasticity region,
C10 center,
LG Leg gathers,
LSG solid gather (leak barrier),
LSGb Base end, LSGf Free end

Claims (18)

An absorbent article having a longitudinal direction and a transverse direction intersecting the longitudinal direction,
An absorptive body provided along the longitudinal direction to absorb excrement;
A front belt member provided along the lateral direction and joined at one end in the longitudinal direction of the absorbent main body and the front joint;
A rear belt member provided along the lateral direction as a separate body from the front belt member, and joined at the other end portion in the longitudinal direction of the absorbent main body and a rear joint portion;
Have
The front belt member includes a front skirt portion on the lower side in the vertical direction than the front joint portion,
The rear belt member includes a rear skirt portion on the lower side in the longitudinal direction than the rear joint portion,
A disposable diaper with a skirt in which both ends of the front band member and both ends of the rear band member are joined to each other in at least a partial region in the lateral direction,
In the central portion in the lateral direction, the front side belt member is
In the front skirt portion, comprising a low elastic region having a predetermined width in the longitudinal direction,
At the upper end portion of the front side belt member, the high elastic region having the predetermined width is provided,
The tension of the lateral acting on the low elastic region, rather smaller than the transverse tension acting on the high elastic region,
The lower end of the side edge joint portion that joins both the end portions of the front band member and the both end portions of the rear band member, and the vertical lower end and the lateral outer end of the front skirt portion at the shortest distance. A disposable diaper with a skirt, characterized in that the larger angle among the angles formed by the connecting straight line and the longitudinal direction is not less than 100 degrees and not more than 140 degrees . An absorbent article having a longitudinal direction and a transverse direction intersecting the longitudinal direction,
An absorptive body provided along the longitudinal direction to absorb excrement;
A front belt member provided along the lateral direction and joined at one end in the longitudinal direction of the absorbent main body and the front joint;
A rear belt member provided along the lateral direction as a separate body from the front belt member, and joined at the other end portion in the longitudinal direction of the absorbent main body and a rear joint portion;
Have
The front belt member includes a front skirt portion on the lower side in the vertical direction than the front joint portion,
The rear belt member includes a rear skirt portion on the lower side in the longitudinal direction than the rear joint portion,
A disposable diaper with a skirt in which both ends of the front band member and both ends of the rear band member are joined to each other in at least a partial region in the lateral direction,
In the central portion in the lateral direction, the front side belt member is
In the front skirt portion, comprising a low elastic region having a predetermined width in the longitudinal direction,
At the upper end portion of the front side belt member, the high elastic region having the predetermined width is provided,
The lateral tension acting on the low elasticity region is smaller than the lateral tension acting on the high elasticity region,
The front belt member is not provided with a separate sheet member from the front belt member in order to form the front skirt portion, and is subjected to cutting processing or joining processing to function as a skirt. A disposable diaper with a skirt, characterized by not . A disposable diaper with a skirt according to claim 1 or 2 ,
In the longitudinal direction, the lower end position of the front side joining portion is lower than the lower end position of the side edge joining portion that joins both end portions of the front side band member and both end portions of the rear side band member. Disposable diaper with. A disposable diaper with a skirt according to claim 1 or 2 ,
In the longitudinal direction, the lower end position of the front side joining portion is higher than the lower end position of the side edge joining portion that joins both end portions of the front side band member and both end portions of the rear side band member. Disposable diaper with. A disposable diaper with a skirt according to any one of claims 1 to 4 ,
A disposable diaper with a skirt, wherein the low elastic region has no elastic member. A disposable diaper with a skirt according to any one of claims 1 to 5 ,
The low elasticity region has a portion superimposed on the non-skin side in the thickness direction of the absorbent main body,
The disposable diaper with a skirt characterized in that the absorbent main body can be visually recognized through the low elasticity region in the overlapped portion. A disposable diaper with a skirt according to claim 6 ,
A disposable diaper with a skirt, wherein the light transmittance in the low elastic region is larger than the light transmittance in the high elastic region. A disposable diaper with a skirt according to claim 6 or 7 ,
A disposable diaper with a skirt, wherein the number of sheet members laminated in the thickness direction in the low elastic region is smaller than the number of sheet members laminated in the thickness direction in the high elastic region . A disposable diaper with a skirt according to any one of claims 1 to 8 ,
In the front skirt portion, at least two sheet members are laminated in the thickness direction,
A disposable diaper with a skirt, wherein an adhesive for joining the laminated sheet members is not provided at a lower end portion of the low elasticity region. A disposable diaper with a skirt according to claim 9 ,
In the central portion in the lateral direction, the rear band member includes a low elastic region having a predetermined width in the vertical direction at the rear skirt portion,
In the rear skirt portion, at least two sheet members are laminated in the thickness direction,
In the lower end portion of the low elasticity region of the front skirt portion, the length in the longitudinal direction of the portion where the adhesive for joining the laminated sheet members is not provided, and
In the lower end portion of the low elasticity region of the rear skirt portion, the length in the longitudinal direction of the portion where the adhesive for joining the laminated sheet members is not provided is different.
A disposable diaper with a skirt characterized by that. A disposable diaper with a skirt according to claim 9 or 10 ,
A disposable diaper with a skirt, wherein a length of the front band member in the vertical direction is equal to a length of the rear band member in the vertical direction. A disposable diaper with a skirt according to any one of claims 1 to 11 ,
The front side belt member has a plurality of elastic members arranged at predetermined intervals in the vertical direction,
Among the plurality of elastic members, the position of the elastic member provided on the lowermost side in the longitudinal direction is:
The disposable diaper with a skirt characterized by being higher than the lower end position of the side edge junction part which joins the both ends of the said front side belt member, and the both ends of the said back side belt member. A disposable diaper with a skirt according to any one of claims 1 to 12 ,
A disposable diaper with a skirt, wherein, in a natural state, the position of the lower end in the vertical direction of the front skirt portion is higher than the position of the lower end in the vertical direction of the absorbent main body. A disposable diaper with a skirt according to any one of claims 1 to 13 ,
The disposable diaper with a skirt, wherein the low elastic region has a different design from the high elastic region. A disposable diaper with a skirt according to any one of claims 1 to 14,
In the extended state, a straight line connecting the lower end of the side edge joint portion joining the both end portions of the front side belt member and both end portions of the rear side belt member and the lower end in the vertical direction of the front side joint portion at the shortest distance. The disposable diaper with a skirt is characterized in that the smaller one of the angles formed with the lateral direction is 10 degrees or more and 30 degrees or less. A disposable diaper with a skirt according to any one of claims 1 to 15,
On both sides in the transverse direction of the absorbent main body, there are leg-around elastic members along the longitudinal direction,
A disposable diaper with a skirt, characterized in that, in the thickness direction, the leg elastic member, the leg elastic member, and the front joint portion overlap each other.   A disposable diaper with a skirt according to any one of claims 1 to 16,
  A disposable diaper with a skirt, wherein at least one of the front band member and the rear band member has a folded portion in which the upper end portion in the longitudinal direction is folded back to the skin side in the thickness direction.   A disposable diaper with a skirt according to any one of claims 1 to 17,
  A disposable diaper with a skirt, wherein a length of the front band member in the vertical direction is different from a length of the rear band member in the vertical direction.

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