JP2019180514A - Underpants type disposable diaper - Google Patents

Abstract

To provide an underpants type disposable diaper which can enhance abdominal cavity inner pressure, and hold a target position at high pressure.SOLUTION: An underpants type disposable diaper (1) comprises a front belt part (21) and a rear belt part (22), and comprises a waist opening (1a) on an upper end. The underpants type disposable diaper comprises: a stretchable area (26s) along an edge of the waist opening (1a); a base area (21s) adjacent to the stretchable area on a lateral center on a front side from a lower side; and a first high pressure force area (33s) and a second high pressure force area (35s) provided on a lower side of the stretchable area (26s). The first high pressure force area (33s) and the second high pressure force area (35s) are provided in a circumferential state, on both end parts in a lateral direction, the first high pressure force area (33s) is separated from the second high pressure force area (35s), and is arranged on an upper side of the second high pressure force area (35s), and on a center in the lateral direction, a lower end of the first high pressure force area (33s) on a rear side is arranged on an upper side of a lower end of the first high pressure force area (35s) on the front side.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a pants-type disposable diaper.

  Conventionally, a pants-type disposable diaper is known as a disposable diaper. For example, Patent Document 1 describes a pants-type disposable diaper in which the lower side from the waistline opening is divided into three upper and lower sections, and a plurality of elastic elastic members are arranged in each section to set the elastic elastic force of each section. Has been.

Japanese Patent No. 3914673

  However, in the pants-type disposable diaper as described above, it is defined that the strength of the horizontal pressure is distributed up and down with respect to the wearer's torso, and even if pressure is applied, the head side and the foot side of the body The internal pressure (vertical direction) escapes. For this reason, it is difficult to increase intra-abdominal pressure effectively. Further, when wearing and moving, there is a possibility that the position of the diaper is shifted and pressure cannot be applied to the aimed position. On the other hand, if the pressure is wide enough to cover the entire circumference of the torso, the intra-abdominal pressure is increased, but the circumference of the wearer's torso is tightened as a whole, making it difficult and uncomfortable to wear.

  This invention is made | formed in view of the above problems, Comprising: It aims at providing the underpants type disposable diaper which can raise intraperitoneal pressure and can hold | maintain the target position to high pressure.

The main invention for achieving the above object has a front side belt portion disposed on the wearer's belly side, and a rear belt portion disposed on the wearer's back side, having a vertical direction, a horizontal direction, and a front-rear direction intersecting each other. A pants-type disposable diaper comprising a side belt portion, wherein a waistline opening is formed at an upper end by the front belt portion and the rear belt portion, and a stretchable region along an edge of the waistline opening; and the front belt portion A base region adjacent to the stretchable region at the center in the left-right direction from below, a first high pressure region and a second high pressure region provided below the stretchable region, and having a unit width The force for extending the first high pressure region by the unit length in the left-right direction is larger than the force for extending the base region of the unit width in the left-right direction by the unit length. Width of said second high pressure region The force for extending the unit length in the left-right direction is larger than the force for extending the base length of the unit width in the left-right direction, and the first high pressure region and the Each of the second high pressure regions is provided in a circumferential shape across the front belt portion and the rear belt portion, and at both ends in the left-right direction, the first high pressure region is the second high pressure region. The first high pressure region on the rear side is spaced from the pressure region, and is disposed on the upper side of the second high pressure region, and the lower end of the first high pressure region on the rear side is at the front side in the first high pressure region. It arrange | positions above the lower end of this, It is characterized by the above-mentioned.
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 pants-type disposable diaper that can increase intra-abdominal pressure and maintain a target position at high pressure.

1 is a perspective view of a pants-type disposable diaper 1. FIG. It is a schematic plan view of the diaper 1 of the unfolded and extended state. It is a schematic sectional drawing in the II line | wire (center of the left-right direction) of FIG. Drawing 4A-Drawing 4C are key map showing the state where diaper 1 of this embodiment was worn. 4A is a view seen from the front side (abdominal side), FIG. 4B is a view seen from the rear side (back side), and FIG. 4C is a view seen from the side (side view).

  At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

  The front belt portion has a vertical direction, a horizontal direction, and a front-rear direction intersecting with each other, and includes a front belt portion disposed on the wearer's belly side, and a rear belt portion disposed on the wearer's back side, A pants-type disposable diaper having a waist opening formed at an upper end by the rear belt portion, and an expansion region along an edge of the waist opening, and the expansion region at the center in the left-right direction of the front belt portion A base region adjacent from the lower side, a first high pressure region provided below the stretchable region, and a second high pressure region, wherein the first high pressure region having a unit width is defined in the left-right direction. The force for extending the unit length is larger than the force for extending the base region of the unit width in the left-right direction, and the second high pressure region of the unit width is Extend the unit length in the left-right direction Force for the base region of the unit width is larger than the force for extending the unit length in the left-right direction, and the first high pressure region and the second high pressure region are respectively the front side The first high pressure region is spaced apart from the second high pressure region at both ends in the left-right direction, and is provided around the belt portion and the rear belt portion. 2 disposed above the high pressure region, and at the center in the left-right direction, the lower end of the first high pressure region on the rear side is disposed above the lower end of the first high pressure region on the front side, A pants-type disposable diaper characterized by that.

  According to such a pants-type disposable diaper, the lower abdomen can be tightened obliquely upward, and the intraabdominal pressure can be increased. In addition, by placing two high-pressure areas so as to sandwich the upper anterior iliac spine (the ledge that touches the finger when the hand is placed on the waist) at both ends in the left and right direction, it is difficult to slip when worn, and the target position Can be maintained at a high pressure.

  In such a pants-type disposable diaper, the lower end of the second high pressure region on the rear side is disposed above the lower end of the second high pressure region on the front side in the center in the left-right direction. desirable.

  According to such a pants-type disposable diaper, the intra-abdominal pressure in the lower part (lower abdomen) can be further increased with the upper anterior iliac spine interposed therebetween.

  In such a pants-type disposable diaper, it is desirable that the first high pressure region of the front belt portion is provided so as to protrude downward.

  According to such a pants-type disposable diaper, it is easy to increase the intra-abdominal pressure.

  In the pants-type disposable diaper, it is desirable that the second high pressure region of the rear belt portion is provided so as to protrude upward.

  According to such a pants-type disposable diaper, it is easy to follow the shape of the buttocks.

  In such a pant-type disposable diaper, in the center in the left-right direction of the rear belt portion, the first high-pressure region and the second high-pressure region are both centered in the vertical direction of the pant-type disposable diaper. It is desirable that it is disposed on the upper side.

  According to such a pants-type disposable diaper, it can be tightened while avoiding the buttocks, and the operation such as walking can be prevented.

  Such a pants-type disposable diaper, having an absorbent core, comprising an absorbent main body folded in two in the longitudinal direction and provided between the front belt portion and the rear belt portion, the first high pressure It is desirable that the region is provided above the upper end of the absorbent core.

  According to such a pants-type disposable diaper, the intra-abdominal pressure can be prevented from being released.

  In such a pants-type disposable diaper, it is desirable that the second high pressure region is also provided above the upper end of the absorbent core.

  According to such a pants-type disposable diaper, it is possible to prevent the absorbent core from being wrinkled and not to reduce the absorbability.

  In such a pants-type disposable diaper, it is desirable that at least one part of the first high pressure region and the second high pressure region overlap at the center in the left-right direction of the front belt portion.

  According to such a pants-type disposable diaper, the intra-abdominal pressure can be further increased.

  In such a pants-type disposable diaper, the first high pressure region and the second high pressure region overlap each other at the center of the rear belt portion in the left-right direction, and the first high pressure region on the rear side The central position in the vertical direction of the overlapping portion between the pressure region and the second high pressure region is greater than the central position in the vertical direction of the overlapping portion between the first high pressure region and the second high pressure region on the front side. It is desirable to be above.

  According to such a pants-type disposable diaper, it is easy to pull up more diagonally.

  In such a pants-type disposable diaper, it is desirable that at least a part of each of the first high pressure region and the second high pressure region is continuous in a circumferential direction around the waist.

  According to such a pants-type disposable diaper, a clamping pressure can be generated around the waist.

  In such a pants-type disposable diaper, the first high pressure region and the second high pressure region are each formed of a plurality of elastic members arranged at intervals in the vertical direction. desirable.

  According to such a pants-type disposable diaper, the number of members in the thickness direction where there is no elastic member can be reduced, and air permeability and comfort are improved.

  In such a pants-type disposable diaper, it is preferable that an elastic coefficient of at least one of the elastic members is larger than an elastic coefficient of another part in a predetermined range including the center in the left-right direction of the front belt portion.

  According to such a pants-type disposable diaper, the predetermined range including the center in the left-right direction on the front side is less likely to deform than other parts, and it is difficult to follow the deformation of the lower abdomen due to a change in posture such as when sitting. This makes it easier to maintain the tightening pressure.

  In such a pants-type disposable diaper, it is preferable that the elastic member is a sheet-like member.

  According to such a pants-type disposable diaper, pressure can be applied on the surface, it is difficult to leave a mark on the body, and an uncomfortable feeling due to tightening or the like can be suppressed.

  In such a pants-type disposable diaper, it is preferable that the base region has elasticity in at least the left-right direction.

  According to such a pants-type disposable diaper, the fit in the base region is improved.

=== Embodiment ===
<< Overall configuration of diaper 1 >>
FIG. 1 is a perspective view of a pants-type disposable diaper 1 (hereinafter also referred to as diaper 1). FIG. 2 is a schematic plan view of the diaper 1 in the unfolded and extended state. The extended state of the diaper 1 is a state in which the diaper 1 is extended without any wrinkles, and the dimensions of each member constituting the diaper 1 (for example, a sheet constituting the exterior body 20) are the same as the dimensions of the member alone. Or it is the state extended until it became the length close | similar to it. FIG. 3 is a schematic cross-sectional view taken along the line II (the center in the left-right direction) of FIG.

  The diaper 1 has an up-down direction, a left-right direction (width direction), and a front-rear direction that intersect with each other, and also has a thickness direction in which the members are stacked as shown in FIG. In the up and down direction, the side that becomes the wearer's trunk side is the upper side, and the side that becomes the wearer's crotch is the lower side. In the front-rear direction, the side that becomes the wearer's stomach side is the front side, and the side that becomes the wearer's back side is the rear side. In the thickness direction, the side in contact with the wearer is the skin side, and the opposite side is the non-skin side.

  The diaper 1 has the absorptive main body 10 which is a rectangular shape in planar view, and the exterior body 20 located on the non-skin side of the absorptive main body 10. The exterior body 20 includes a ventral-side exterior body 21 (corresponding to the front belt portion) positioned on the front side in the front-rear direction, a back-side exterior body 22 (corresponding to the rear belt portion) positioned on the rear side in the front-rear direction, and And a crotch outer body 23 connecting the two. The members adjacent to each other in the thickness direction are joined with an adhesive or the like.

  Further, the abdominal exterior body 21 is located on one end side in the longitudinal direction of the absorbent main body 10, and the back side exterior body 22 is located on the other end side in the longitudinal direction of the absorbent main body 10. In the longitudinal direction of the absorbent main body 10, the side where the ventral-side exterior body 21 is located is the front side, and the side where the back-side exterior body 22 is located is the rear side. Further, the crotch outer body 23 is located on the skin side with respect to the abdominal side outer body 21 and the back side outer body 22.

  In addition, in the diaper 1 of this embodiment, the exterior body 20 is composed of three members (the abdominal exterior body 21, the back exterior body 22, and the crotch exterior body 23), but is not limited thereto. For example, the abdominal-side exterior body 21, the back-side exterior body 22, and the crotch exterior body 23 may be configured by one member. Moreover, it is good also as a structure which does not have the crotch exterior body 23. FIG.

  In the unfolded diaper 1 shown in FIG. 2, the absorbent main body 10 is folded in half at the longitudinal center CL, and both left and right end portions of the ventral side exterior body 21 and both left and right end portions of the back side exterior body 22 are arranged. Are joined by welding or the like, so that the pants shape shown in FIG. 1 is obtained. That is, the longitudinal direction of the absorbent main body 10 is along the vertical direction of the diaper 1, and the ventral-side exterior body 21 and the back-side exterior body 22 are connected in an annular shape to form the waistline opening 1 a and the pair of leg-hole openings 1 b. . Hereinafter, the regions at both ends in the left-right direction where the ventral-side exterior body 21 and the back-side exterior body 22 are joined are referred to as end joint regions 24.

  As shown in FIG. 3, the absorbent main body 10 includes an absorbent core 11, a top sheet 12 positioned on the skin side of the absorbent core 11, and a back sheet 13 positioned on the non-skin side of the absorbent core 11. Have.

  The absorbent core 11 is a member that absorbs and holds excretory fluid such as urine, and is formed of liquid absorbent fibers such as pulp fibers mixed with a superabsorbent polymer (SAP), for example. Although not shown, the outer peripheral surface of the absorbent core 11 may be covered with a liquid-permeable sheet such as tissue paper or nonwoven fabric.

  The top sheet 12 is a liquid-permeable sheet, and for example, a hydrophilic air-through nonwoven fabric or a spunbond nonwoven fabric is used. The back sheet 13 has a two-layer structure of a liquid impermeable sheet 13a and a liquid permeable sheet 13b disposed on the non-skin side thereof. As the liquid-impermeable sheet 13a, for example, a resin film or the like is used, and as the liquid-permeable sheet 13b, for example, a flexible nonwoven fabric or the like is used. The back sheet 13 may be a single layer structure of the liquid impermeable sheet 13a.

  Although not shown in detail, as shown in FIG. 1, three-dimensional gather portions 14 that can stand on the skin side may be provided on both sides in the left-right direction of the absorbent main body 10.

  As shown in FIG. 2, the abdominal side exterior body 21 and the back side exterior body 22 are respectively lower than the waistline regions 211 and 221 in which the end joint regions 24 are positioned in the vertical direction and the waistline regions 211 and 221. Crotch side regions 212 and 222.

  The waistline regions 211 and 221 have a rectangular shape in plan view. In addition, the waistline region 211 of the backside exterior body 22 is a center BCL between the center CL of the absorbent main body 10 (in other words, the lower end of the diaper 1) and the upper end of the backside exterior body 22 (in other words, the upper end of the diaper 1). Is located above.

  The crotch side regions 212 and 222 have a substantially trapezoidal shape, and the lateral width (length in the left-right direction) becomes narrower toward the lower side. Compared with the ventral side exterior body 21, the back side exterior body 22 has a larger crotch region 222 and can cover the wearer's buttocks.

  As shown in FIG. 3, the ventral-side exterior body 21 and the back-side exterior body 22 are respectively skin-side sheets 213 and 223 positioned on the skin side, and non-skin-side sheets 214 and 224 positioned on the non-skin side. The elastic nonwoven fabrics 215 and 225 which are located between them and have elasticity in at least the right and left direction of the diaper 1.

  The skin side sheets 213 and 223 and the non-skin side sheets 214 and 224 are preferably flexible sheets. For example, a spunbond nonwoven fabric or an SMS nonwoven fabric is used.

  The stretchable nonwoven fabrics 215 and 225 include, for example, a polyurethane elastomer that is a thermoplastic elastomeric fiber having elasticity and a polypropylene (PP) of a polyolefin resin that is a thermoplastic resin fiber having inelasticity. The nonwoven fabric is subjected to an appropriate stretching process such as gear stretching. By this stretching treatment, the stretchable nonwoven fabrics 215 and 225 have the stretchability in the left-right direction and the up-down direction of the diaper 1. In addition, the extending | stretching process may perform a extending | stretching process in the direction orthogonal to each other, and may perform an extending | stretching process only in a predetermined direction. When the stretching process is performed only in the predetermined direction, the elasticity in the predetermined direction is manifested, but not all fiber orientations are along the predetermined direction, so the elasticity is also in the direction perpendicular to the predetermined direction. Is expressed.

  The skin side sheets 213 and 223, the non-skin side sheets 214 and 224, and the stretchable nonwoven fabrics 215 and 225 are joined together by a plurality of welded portions (not shown). For this reason, compared with the case where it joins with the adhesive agent which solidifies, for example, the touch is soft. In addition, the elastic nonwoven fabrics 215 and 225 contract between the welded portions, so that the skin side sheets 213 and 223 and the non-skin side sheets 214 and 224 are curved and protrude outward in the thickness direction. That is, since the skin side sheets 213 and 223 and the non-skin side sheets 214 and 224 swell between the welded portions, the touch becomes softer and a visually soft impression can be given to the user. Since the welded portions are scattered at a relatively narrow interval, the diaper 1 of the present embodiment extends in many directions, and a fine bulge is generated. Since the occurrence of vertical warp etc. can be prevented, the beauty of the diaper 1 is good.

  In the abdominal exterior body 21 and the back exterior body 22, a plurality of waistline elastic members 26 (for example, rubber thread) are disposed in a region along the edge of the waistline opening 1a. Hereinafter, the region where the waistline elastic member 26 is provided (the region along the edge of the waistline opening 1a) is also referred to as an expansion / contraction region 26s. In the present embodiment, the region surrounded by the broken line below the stretchable region 26s in FIG. 2 is also referred to as the base region 21s. The base region 21s is a region in which a stretchable nonwoven fabric 215 is provided between the skin side sheet 213 and the non-skin side sheet 214, and is located below the stretch region 26s at the center in the left-right direction of the abdominal exterior body 21. Is an adjacent area.

  In addition, a plurality of leg-hole elastic members 27 are arranged in a region along the edge of the leg-hole opening 1b. As with the waistline elastic member 26, the legline elastic member 27 is made of, for example, rubber thread.

  Thereby, the waist circumference and leg circumference of the diaper 1 are firmly adhered to the wearer by the waist circumference elastic member 26 and the leg circumference elastic member 27. Therefore, the diaper 1 can be prevented from slipping out and leaking from the legs. Further, the positions of high pressure regions (first high pressure region 33s and second high pressure region 35s) described later are also difficult to shift.

  On the other hand, the region where the elastic nonwoven fabrics 215 and 225 are provided fits the wearer gently over the entire surface. For example, the fit in the base region 21s is improved. In addition, pressure can be applied evenly to the skin, the feeling of tightening can be reduced, and the feeling of strangeness can be suppressed (comfort is good).

  Further, stretchable films 33 and 35 are also arranged on the ventral-side exterior body 21 and the back-side exterior body 22 of the diaper 1 of the present embodiment. The first high pressure region 33 s and the second high pressure region 35 s are formed by the stretchable films 33 and 35, respectively. Details of the stretchable films 33 and 35 and the high pressure regions (the first high pressure region 33s and the second high pressure region 35s) will be described later.

  The crotch outer body 23 has a substantially hourglass shape in plan view that is curved inward in the left-right direction at the central portion in the longitudinal direction. Moreover, as shown in FIG. 3, the crotch outer body 23 is located between the skin side sheet 231 located on the skin side, the non-skin side sheet 232 located on the non-skin side, and the upper and lower sides of the diaper 1. And a stretchable nonwoven fabric 233 having stretchability in the direction (longitudinal direction of the absorbent main body 10). The skin side sheet 231, the non-skin side sheet 232, and the stretchable nonwoven fabric 233 are joined together by a plurality of welded portions (not shown).

  The stretchable nonwoven fabric 233 of the crotch outer body 23 allows the absorbent core 11 to be in close contact with the wearer's crotch, and even if the weight of the absorbent core 11 increases due to excretion, the diaper 1 can be prevented from sagging. The stretchable nonwoven fabric 233 may be stretchable in the left-right direction of the diaper 1, or may be stretchable in the up-down direction and the left-right direction of the diaper 1. Further, a crotch elastic member 28 is disposed in a region along the leg opening 1b in the crotch outer body 23. The crotch elastic member 28 is made of rubber thread or the like, like the waistline elastic member 26 and the legline elastic member 27. As a result, the crotch outer body 23 comes into close contact with the wearer's legs.

<< About the high pressure range >>
Hereinafter, the high pressure region (the first high pressure region 33s and the second high pressure region 35s) of the diaper 1 of the present embodiment will be described with reference to FIGS. In addition, FIG. 4A-FIG. 4C are conceptual diagrams which show the state which wore the diaper 1 of this embodiment. 4A is a view seen from the front side (abdominal side), FIG. 4B is a view seen from the rear side (back side), and FIG. 4C is a view seen from the side (side view). In FIG. 4A to FIG. 4C, the portions (arrangements) where the first high pressure region 33 s and the second high pressure region 35 s are provided are surrounded by a dashed line.

  The diaper 1 of this embodiment is provided with two high pressure regions (a first high pressure region 33 s and a second high pressure region 35 s) below the stretchable region 26 s. Here, a high pressure area | region is an area | region where the pressure (tightening pressure) at the time of wearing of the diaper 1 is higher than the area | region (for example, base area | region 21s) in which the elastic nonwoven fabrics 215 and 225 were provided. In other words, the force for extending the unit width of the high-pressure region (the first high-pressure region 33 s and the second high-pressure region 35 s) in the left-right direction extends the unit width of the base region 21 s in the left-right direction. It means that it is bigger than the force to make it.

  The first high pressure region 33 s is provided so as to cross the waist region 211 of the ventral exterior body 21 and the waist region 221 of the back exterior body 22 between the end joint regions 24 at both ends in the left-right direction. It has been. Similarly, the second high pressure region 35s also crosses the waistline region 211 of the abdominal exterior body 21 and the waistline region 221 of the backside exterior body 22 between the end joint regions 24 at both ends in the left-right direction. Is provided as

  The first high pressure region 33 s is configured by a plurality (three in the present embodiment) of stretchable films 33 arranged at intervals in the vertical direction. Similarly, the second high pressure region 35s is configured by a plurality of (three in the present embodiment) stretchable films 35 arranged at intervals in the vertical direction. The stretchable films 33 and 35 are elastic members having stretchability by melting an elastomer resin such as urethane or styrene to form a sheet having a uniform thickness. By using such a sheet-like stretchable film 33, pressure can be applied on the surface, it is difficult to leave a mark on the body, and an uncomfortable feeling due to tightening or the like can be suppressed.

  The three stretchable films 33 on the ventral side exterior body 21 side (front side) and the three stretchable films 33 on the back side exterior body 22 side (rear side) corresponding to the stretchable film 33 are respectively end joint regions 24. Are arranged so that their vertical positions are the same. And in the edge part joining area | region 24, the edge part of the left-right direction of the three elastic films 33 (in other words, 1st high voltage | pressure area | region 33s) by the side of the abdominal side exterior body 21, and 3 of the back side exterior body 22 side. The left and right ends of the stretchable film 33 (in other words, the first high-pressure region 33 s) of the book are connected. Thereby, as shown in FIG. 4C, the first high pressure region 33 s on the ventral exterior body 21 side and the first high pressure region 33 s on the back side exterior body 22 side are continuous in the end joint region 24. The first high pressure region 33 s is formed in a circumferential shape across the ventral-side exterior body 21 and the back-side exterior body 22.

  Similarly, the three stretchable films 35 on the abdominal exterior body 21 side and the three stretchable films 35 on the backside exterior body 22 side corresponding thereto are respectively arranged in the vertical direction in the end joint region 24. They are arranged so that their positions are the same. And in the edge part junction area | region 24, the edge part of the left-right direction of the three elastic films 35 (in other words, 2nd high voltage | pressure area | region 35s) by the side of the ventral | abdominal exterior body 21, and three of the back | dorsal exterior body 22 side. The left and right ends of the stretchable film 35 (in other words, the second high-pressure region 35s) are connected to each other. Accordingly, as shown in FIG. 4C, the second high pressure region 35 s on the ventral exterior body 21 side and the second high pressure region 35 s on the back exterior body 22 side are connected so as to be continuous in the end joint region 24. The second high pressure region 35 s is formed in a circumferential shape across the ventral-side exterior body 21 and the back-side exterior body 22.

  Further, in the end joint region 24, the first high pressure region 33s passes near the region (expandable region 26s) along the edge of the waistline opening 1a, and the second high pressure region 35s is on the edge of the leg periphery opening 1b. It passes near the region along which the leg elastic member 27 is formed. Further, in the end joint region 24, the first high pressure region 33s and the second high pressure region 35s do not overlap. That is, in the end joint region 24, the first high pressure region 33s is separated from the second high pressure region 35s and is disposed above the second high pressure region 35s. More specifically, the first high pressure region 33 s is arranged so that at least the upper end is above the upper anterior iliac spine of the wearer, and the second high pressure region 35 s is at least the lower end of the upper front. It is arranged so that it is below the iliac spine. In the present embodiment, the lower end of the first high pressure region 33s is arranged to pass over the superior anterior iliac spine. The upper anterior iliac spine is a protruding portion of the iliac bone that is the largest bone of the pelvis, and is a ledge that touches a finger when a hand is placed on the waist. Thereby, at the time of wearing of the diaper 1, the wearer's upper anterior iliac spine can be sandwiched between the first high pressure region 33s and the second high pressure region 35s. As described above, the upper anterior iliac spine is sandwiched between the first high pressure region 33s and the second high pressure region 35s, so that it is difficult for the misalignment to occur when the diaper 1 is worn, and the target position is reliably high pressure. Can be held in.

  Further, the first high pressure region 33 s is curved and arranged so as to protrude downward on the ventral exterior body 21 side (see FIGS. 2 and 4A), and the stretchable region on the back side exterior body 22 side. It is arranged almost horizontally near the lower part of 26s (see FIGS. 2 and 4B). For this reason, at the center C in the left-right direction of the diaper 1, the lower end of the first high pressure region 33s on the back side exterior body 22 side (rear side) is the first high pressure region 33s on the ventral side exterior body 21 side (front side). It is arrange | positioned above the lower end of. Thereby, the lower abdominal part can be tightened diagonally upward (pressure is applied), and the intraabdominal pressure can be increased. In particular, in the present embodiment, the abdominal exterior body 21 is convex downward, so that the intraabdominal pressure can be easily increased. Moreover, by setting it as such a structure, the function of the muscles (abdominal muscle etc.) around the pelvis can be assisted and the pelvis can be stabilized. As a result, it is possible to improve the walking performance such as a foot rise and a stride. Further, as shown in FIG. 2, the first high pressure region 33 s is disposed above the upper end of the absorbent core 11 (does not overlap with the absorbent core 11). Thereby, it is possible to prevent the intra-abdominal pressure from being released.

  Further, the second high pressure region 35 s is disposed substantially horizontally on the ventral exterior body 21 side (see FIGS. 2 and 4A), and is curved so as to protrude upward on the back exterior body 22 side. (See FIGS. 2 and 4B). For this reason, in the center C in the left-right direction of the diaper 1, the lower end of the second high pressure region 35s on the back side exterior body 22 side (rear side) is the second high pressure region 35s on the ventral side exterior body 21 side (front side). It is arrange | positioned above the lower end of. Thereby, the intra-abdominal pressure of the lower part (lower abdomen) can be increased with the upper anterior iliac spine interposed therebetween. Moreover, since it is convex on the back side exterior body 22 side, it is easy to follow the shape of the buttocks. Further, the second high pressure region 35 s is disposed above the upper end of the absorbent core 11 (does not overlap with the absorbent core 11). Thereby, a wrinkle is harder to the absorptive core 11, and it can prevent so that absorptivity falls.

  Further, on the back side exterior body 22 side, the first high pressure region 33 s and the second high pressure region 35 s are provided in the waistline region 221. As described above, the waistline region 221 is located above the center BCL in the vertical direction of the diaper 1 (see FIG. 2). That is, on the back exterior body 22 side (rear side), the first high pressure region 33 s and the second high pressure region 35 s are both disposed above the center BCL in the vertical direction of the diaper 1. Thereby, it can tighten | tighten avoiding a buttocks and can prevent operation | movement, such as walking.

  Moreover, since the 1st high pressure area | region 33s has protruded below by the abdominal side exterior body 21 side, in the center C of the left-right direction of the front side of the diaper 1, the 1st high pressure area | region 33s and the 2nd high pressure area | region 35s overlap. In this way, at least one part of the first high pressure region 33s and the second high pressure region 35s overlaps at the center C in the left-right direction on the front side of the diaper 1, thereby increasing the force of pulling up obliquely, Can be further enhanced. The center position Jf shown in FIG. 4A is the center in the vertical direction of the overlapping portion of the first high pressure region 33s and the second high pressure region 35s in the center C in the left-right direction on the front side of the diaper 1.

  Furthermore, since the second high pressure region 35 s is convex upward on the backside exterior body 22 side, the first high pressure region 33 s and the second high pressure are also present at the center C in the left-right direction on the rear side of the diaper 1. The region 35s overlaps. The center position Jb shown in FIG. 4B is the midpoint in the vertical direction of the overlapping portion of the first high pressure region 33s and the second high pressure region 35s at the center C in the left-right direction on the rear side of the diaper 1.

  In the present embodiment, as shown in FIGS. 4A and 4B, the center position Jf of the overlapping portion (the overlapping portion of the first high pressure region 33 s and the second high pressure region 35 s) in the center C in the left-right direction on the front side. The center position Jb of the overlapping portion at the center C in the left-right direction on the rear side is higher (upper side). Thereby, it is easy to pull up a wearer's lower abdomen more diagonally upward.

  As described above, the diaper 1 of the present embodiment includes the base region adjacent to the stretchable region 26s along the edge of the waistline opening 1a and the stretchable region 26s at the center in the left-right direction of the ventral-side exterior body 21 from below. 21 s, and a first high pressure region 33 s and a second high pressure region 35 s provided below the stretchable region 26 s. The first high pressure region 33 s and the second high pressure region 35 s are circumferentially provided across the abdominal exterior body 21 and the back exterior body 22, and the first high pressure region is provided in the end joint region 24. The region 33s is separated from the second high pressure region 35s and is disposed above the second high pressure region 35s. Further, at the center C in the left-right direction, the lower end of the first high pressure region 33 s on the backside exterior body 22 side is disposed above the lower end of the first high pressure region 35 s on the abdominal exterior body 21 side.

  Thereby, a lower abdominal part can be tightened diagonally upward and intra-abdominal pressure can be raised. In addition, the position is difficult to shift when worn, and the target position can be maintained at a high pressure.

=== 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 second high pressure region 35 s on the ventral-side exterior body 21 side is substantially horizontal, but may be arranged so as to protrude downward. In the above-described embodiment, the second high pressure region 35 s on the backside exterior body 22 side is convex upward, but may be disposed horizontally (not necessarily convex upward). For example, the first high pressure region 33 s and the second high pressure region 35 s may be disposed substantially in parallel around the waist. In this case, the first high pressure region 33 s and the second high pressure region 35 s do not overlap each other on the front side and the rear side. Even in this case, the target position can be maintained at a high pressure and the intraabdominal pressure is increased by sandwiching the upper anterior iliac spine of the wearer between the first high pressure region 33s and the second high pressure region 35s. be able to. However, in this case, it is desirable that the second high pressure region 35s does not overlap the absorbent core 11 (the second high pressure region 35s is disposed above the upper end of the absorbent core 11).

  In the above-described embodiment, the first high pressure region 33 s and the second high pressure region 35 s are each composed of a plurality (three) of the stretchable films 33 and 35, but are not limited thereto. . For example, you may comprise a high pressure area | region with one elastic film. However, by forming a plurality of stretchable films (stretchable films 33, 35) at intervals in the vertical direction as in the above-described embodiment, the number of members in the thickness direction of the places where there is no stretchable film can be reduced. Improves breathability and comfort. The member constituting the high pressure region is not limited to a stretchable film, and a thread-like or belt-like elastic member made of polyurethane resin or natural rubber may be used.

  In the above-described embodiment, each high pressure region (the first high pressure region 33 s and the second high pressure region 35 s) is connected in the end joint region 24 so as to be completely continuous. The part should just be continuous in the circumferential direction around the waist. For example, the front high-pressure region and the rear high-pressure region are arranged in the horizontal direction, and the rear high-pressure region is disposed above the front high-pressure region, and the end joint region 24 is arranged. , A step may be provided and a part thereof may be connected. Even in such a case, the first high pressure region 33 s and the second high pressure region 35 s can be tightened in the circumferential direction because at least a part of the first high pressure region 33 s and the second high pressure region 35 s are continuous with each other. Since the high pressure region on the side is disposed above the high pressure region on the front side, the lower abdomen can be tightened obliquely upward.

  In addition, in a predetermined range including the center C in the left-right direction on the abdominal exterior body 21 side (for example, a portion above the absorbent core 11), at least one elastic coefficient of the stretchable films 33 and 35 is set to other portions. The value may be larger than the value. The elastic coefficient is a proportional constant between stress and displacement (strain) in elastic deformation, and the larger the elastic coefficient, the smaller the displacement amount for the same stress. That is, when the same force is applied, the above-mentioned predetermined range portion may be less likely to be deformed than other portions. As a result, it becomes difficult to follow the deformation of the lower abdomen due to a change in posture such as when sitting, and it becomes easier to maintain the tightening pressure. In addition, as a method of increasing the elastic modulus of a part of the stretchable film, for example, a method of reducing a stretchability (increasing the elastic modulus) by heating a part of the stretchable film (the predetermined range). is there.

1 pants-type disposable diapers,
10 absorbent body, 11 absorbent core,
12 top sheet, 13 back sheet, 14 solid gather part,
20 exterior body,
21 ventral exterior body (front belt part), 21s base region,
22 Back exterior body (rear belt part),
23 inseam exterior body, 24 end joint region,
26 waist elastic member, 26s stretchable region,
27 leg elastic member, 28 inseam elastic member,
33 stretchable film (elastic member), 33s first high pressure region,
35 Elastic film (elastic member), 35s Second high pressure region

In the foregoing underpants type disposable diaper, the first high-pressure area及 beauty the second high-pressure area, respectively, at least one part is continuous in the circumferential direction of the waist, it is desirable.

The main invention for achieving the above object is:
The front belt portion has a vertical direction, a horizontal direction, and a front-rear direction intersecting with each other, and includes a front belt portion disposed on the wearer's belly side, and a rear belt portion disposed on the wearer's back side, A pants-type disposable diaper in which a waist opening is formed at the upper end by the rear belt portion,
A stretchable region along an edge of the waistline opening;
A base region adjacent to the stretchable region at the center in the left-right direction of the front belt portion from below;
A first high pressure region and a second high pressure region provided below the stretchable region;
With
The force for extending the first high pressure region of unit width in the left-right direction by a unit length is greater than the force for extending the base region of unit width in the left-right direction by the unit length. ,
The force for extending the unit length in the left-right direction of the second high pressure region of the unit width is greater than the force for extending the base length of the unit width in the left-right direction. Big
In each of the first high pressure region and the second high pressure region, at least one part in the vertical direction is continuous in a circumferential direction around the waist,
At both ends in the left-right direction, the first high pressure region is spaced apart from the second high pressure region, and is disposed above the second high pressure region,
In the center in the left-right direction, the lower end of the first high pressure region on the rear side is disposed above the lower end of the first high pressure region on the front side ,
In the center in the left-right direction of the front belt portion, the first high pressure region and the second high pressure region overlap at least one part,
It is characterized by that.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

Claims (14)

The front belt portion has a vertical direction, a horizontal direction, and a front-rear direction intersecting with each other, and includes a front belt portion disposed on the wearer's belly side, and a rear belt portion disposed on the wearer's back side, A pants-type disposable diaper in which a waist opening is formed at the upper end by the rear belt portion,
A stretchable region along an edge of the waistline opening;
A base region adjacent to the stretchable region at the center in the left-right direction of the front belt portion from below;
A first high pressure region and a second high pressure region provided below the stretchable region;
With
The force for extending the first high pressure region of unit width in the left-right direction by a unit length is greater than the force for extending the base region of unit width in the left-right direction by the unit length. ,
The force for extending the unit length in the left-right direction of the second high pressure region of the unit width is greater than the force for extending the base length of the unit width in the left-right direction. Big
The first high pressure region and the second high pressure region are respectively provided in a circumferential shape across the front belt portion and the rear belt portion,
At both ends in the left-right direction, the first high pressure region is spaced apart from the second high pressure region, and is disposed above the second high pressure region,
In the center in the left-right direction, the lower end of the first high pressure region on the rear side is disposed above the lower end of the first high pressure region on the front side.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to claim 1,
In the center in the left-right direction, the lower end of the second high pressure region on the rear side is disposed above the lower end of the second high pressure region on the front side.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to claim 1 or 2,
The first high pressure region of the front belt portion is provided so as to protrude downward.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to any one of claims 1 to 3,
The second high pressure region of the rear belt portion is provided so as to protrude upward.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to any one of claims 1 to 4,
In the center in the left-right direction of the rear belt portion, the first high pressure region and the second high pressure region are both disposed above the vertical center position of the pants-type disposable diaper.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to any one of claims 1 to 5,
Having an absorbent core, comprising an absorbent main body that is folded in two in the longitudinal direction and provided between the front belt portion and the rear belt portion;
The first high pressure region is provided above the upper end of the absorbent core.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to claim 6,
The second high pressure region is also provided above the upper end of the absorbent core.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to any one of claims 1 to 7,
In the center in the left-right direction of the front belt portion, the first high pressure region and the second high pressure region overlap at least one part,
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to claim 8,
In the center in the left-right direction of the rear belt portion, the first high pressure region and the second high pressure region overlap at least one part,
The vertical center position of the overlapping portion between the first high pressure region and the second high pressure region on the rear side is the upper portion of the overlapping portion between the first high pressure region and the second high pressure region on the front side. Above the vertical center position,
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to any one of claims 1 to 9,
Each of the first high-pressure region and the second high-pressure region has at least one part continuous in the circumferential direction around the waist, and is a pants-type disposable diaper characterized by the above. The pants-type disposable diaper according to any one of claims 1 to 10,
Each of the first high pressure region and the second high pressure region is formed of a plurality of elastic members arranged at intervals in the vertical direction.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to claim 11,
In a predetermined range including the center in the left-right direction of the front belt part, the elastic coefficient of at least one of the elastic members is larger than the elastic coefficient of other parts,
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to claim 11 or 12,
The elastic member is a sheet-like member.
A pants-type disposable diaper characterized by that. The pants-type disposable diaper according to any one of claims 1 to 13,
The base region has elasticity in at least the left-right direction,
A pants-type disposable diaper characterized by that.

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