TWI774912B - Shorts-type disposable diapers - Google Patents

Abstract

[Subject] To provide a shorts-type disposable diaper capable of increasing intra-abdominal pressure and maintaining a target position at a high pressure. [Solution] A shorts-type disposable diaper (1) having a front side belt portion (21) and a rear side belt portion (22), and a waist opening (1a) at the upper end, is provided with: The expansion and contraction area (26s) at the edge of the waist opening (1a); the base area (21s) adjacent to the left and right central expansion and contraction areas of the front side from the lower side; and the first high pressure area ( 33s) and the second high-pressure area (35s), the first high-pressure area (33s) and the second high-pressure area (35s) are circumferentially arranged, and at both ends in the left-right direction, the first high-pressure area (33s) It is separated from the second high pressure region (35s), and is arranged on the upper side of the second high pressure region (35s). It is located above the lower end of the first high pressure region (35s) on the front side.

Description

Shorts-type disposable diapers

The present invention relates to a shorts type disposable diaper.

In the past, a shorts-type disposable diaper has been known as a disposable diaper. For example, Patent Document 1 describes a pant-type disposable diaper in which the lower side is divided into three upper and lower sections from the waist opening, a plurality of elastic elastic members are arranged in each section, and the elastic expansion and contraction of each section is set. force. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 3914673

[The problem to be solved by the invention]

However, in the above-mentioned shorts-type disposable diapers, the level of horizontal pressure with respect to the waist of the wearer is determined so as to be distributed up and down, and even if pressure is applied, the head side and the foot side (up and down) of the body are regulated. direction) internal pressure will also run away. Therefore, it is difficult to effectively increase the intra-abdominal pressure. In addition, there is a concern that the position of the diaper may be displaced and pressure cannot be applied to the target position during the wearing operation. On the other hand, if the pressure is set to a high pressure in a wide range covering the entire waistline, the intra-abdominal pressure can be increased, but the wearer's entire waistline is tightened and the wearing feeling is deteriorated.

The present invention has been developed in view of the above-mentioned problems, and an object of the present invention is to provide a pant-type disposable diaper which can increase the intra-abdominal pressure and keep the target position at a high pressure. [Means for solving problems]

The main invention for achieving the above-mentioned object is a front-side belt portion arranged on the abdominal side of the wearer, and a front-side belt portion arranged on the back side of the wearer having vertical, horizontal, and front-rear directions intersecting with each other. A shorts-type disposable diaper having a rear belt portion and a waist opening at the upper end of the front belt portion and the rear belt portion is characterized by comprising: a diaper along the edge of the waist opening. The expansion and contraction region; the base region of the expansion and contraction region adjacent to the center of the left-right direction of the front belt portion from the lower side; and the first high-pressure region and the second high-pressure region provided below the expansion and contraction region. The force for extending the unit length of the first high pressure region in the left-right direction is greater than the force for extending the base region of the unit width to the left-right direction for the unit length, and the second high pressure per unit width The force for extending the unit length of the region in the left-right direction is greater than the force for extending the base region of the unit width in the left-right direction by the unit length, and the first high-pressure region and the second high-pressure region respectively span The front-side belt portion and the rear-side belt portion are circumferentially arranged, and at both end portions in the left-right direction, the first high-pressure region and the second high-pressure region are separated from the second high-pressure region and disposed in the second high-pressure region. On the upper side, in the center in the left-right direction, the lower end of the first high pressure region on the rear side is arranged above the lower end of the first high pressure region on the front side. Other features of the present invention will be apparent from the description of this specification and the accompanying drawings. [Effect of invention]

According to the present invention, it is possible to provide a shorts-type disposable diaper that can increase the intra-abdominal pressure and maintain a high pressure at a target position.

[Form for carrying out the invention]

From the description of this specification and the attached drawings, at least the following matters can be understood.

A shorts-type disposable diaper having vertical, horizontal, and front-rear directions intersecting with each other, and comprising: a front belt portion disposed on the abdomen of the wearer, and a belt disposed on the back of the wearer A shorts-type disposable diaper having a rear belt portion and a waist opening at the upper end of the front belt portion and the rear belt portion is characterized by comprising: a diaper along the edge of the waist opening. The expansion and contraction area; the base area of the expansion and contraction area adjacent to the center of the left-right direction of the front side belt portion from the lower side; and the first high-pressure area and the second high-pressure area provided below the expansion and contraction area. The force used to extend the first high pressure region in the left-right direction by the unit length is greater than the force used to extend the base region of the unit width in the left-right direction by the unit length. The force for extending the unit length of the region in the left-right direction is greater than the force for extending the base region of the unit width in the left-right direction for the unit length, and the first high-pressure region and the second high-pressure region span respectively. The front-side belt portion and the rear-side belt portion are circumferentially arranged, and at both end portions in the left-right direction, the first high-pressure region and the second high-pressure region are separated from the second high-pressure region and disposed in the second high-pressure region. On the upper side, in the center in the left-right direction, the lower end of the first high pressure region on the rear side is arranged above the lower end of the first high pressure region on the front side.

According to such a shorts-type disposable diaper, the lower abdomen can be tightened diagonally upward, and the intra-abdominal pressure can be increased. In addition, two high-pressure areas are arranged on both ends in the left and right direction so as to sandwich the anterior superior spine of the ilium (when the hand is placed on the waist, it touches the protrusion of the fingers). The target position is kept at high pressure.

In such a pant-type disposable diaper, it is desirable that 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.

According to such a shorts type disposable diaper, the intra-abdominal pressure of the lower part (lower abdomen) can be further increased by sandwiching the anterior superior spine of the ilium.

In such a pant-type disposable diaper, it is desirable that the first high-pressure region of the front-side belt portion be convex downward.

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

In such a shorts-type disposable diaper, it is desirable that the second high-pressure region of the rear belt portion be convexly upward.

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

In such a pant-type disposable diaper, both the first high-pressure region and the second high-pressure region are arranged at the center of the rear belt portion in the left-right direction than the shorts-type disposable diaper. It is desirable that the center position of the above-mentioned vertical direction of the disposable diaper is further to the upper side.

According to such a shorts-type disposable diaper, it is possible to avoid tightening the buttocks, and does not interfere with movements such as walking.

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

According to such a shorts type disposable diaper, the intra-abdominal pressure can be prevented from escaping.

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

According to such a pant-type disposable diaper, wrinkles are less likely to occur in the absorptive core, and absorbability can be prevented from being lowered.

In such a pant-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 shorts-type disposable diaper, the intra-abdominal pressure can be further increased.

In such a pant-type disposable diaper, the first high pressure region and the second high pressure region at least partially overlap at the center of the rear belt portion in the left-right direction, and the first high pressure region on the rear side The vertical center position of the overlapping portion of the pressure region and the second high pressure region is desirably higher than the vertical center position of the overlapping portion of the first high pressure region and the second high pressure region on the front side.

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

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

According to such a shorts type disposable diaper, tightening pressure can be generated at the waistline.

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

According to such a pant-type disposable diaper, the number of members in the thickness direction of the portion without the elastic member can be reduced, and the air permeability and wearing feeling can be improved.

In such a pant-type disposable diaper, in a predetermined range including the center in the left-right direction of the front belt portion, it is desirable that at least one elastic member has a higher elastic modulus than other parts.

According to such a shorts-type disposable diaper, the predetermined range including the center in the left-right direction of the front side is less deformable than other parts, and it is difficult to follow the deformation of the lower abdomen due to changes in posture such as when sitting. Thereby, the tightening pressure is easily maintained.

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

According to such a shorts-type disposable diaper, pressure can be applied to the surface, so that marks are not easily adhered to the body, and a feeling of discomfort due to tightening or the like can be suppressed.

In such a pant-type disposable diaper, it is desirable that the base region has stretchability at least in the left-right direction.

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

=== Implementation form === <<The overall structure of the diaper 1>> FIG. 1 is a perspective view of a shorts-type disposable diaper 1 (hereinafter referred to as a diaper 1 ). FIG. 2 is a schematic plan view of the diaper 1 in an unfolded and extended state. In addition, the stretched state of the diaper 1 means that the diaper 1 is stretched to a state without wrinkles, and the dimensions of each member constituting the diaper 1 (for example, sheets constituting the outer body 20 , etc.) are stretched to match the dimensions of the individual members. or a state close to this length. FIG. 3 is a schematic cross-sectional view taken along the line I-I (center in the left-right direction) of FIG. 2 .

The diaper 1 has a vertical direction, a left-right direction (broadside direction), and a front-rear direction that intersect with each other, and as shown in FIG. 3 , has a thickness direction in which each member is laminated. In the vertical direction, the side that becomes the waist of the wearer is referred to as the upper side, and the side that becomes the crotch of the wearer is referred to as the lower side. In the front-back direction, the side that becomes the wearer's ventral side is referred to as the front side, and the side that becomes the wearer's back side is referred to as the rear side. In the thickness direction, the side in contact with the wearer is referred to as the skin side, and the opposite side is referred to as the non-skin side.

The diaper 1 includes an absorptive main body 10 having a rectangular shape in plan view, and an outer body 20 positioned on the non-skin side of the absorptive main body 10 . The exterior body 20 includes a ventral exterior body 21 (corresponding to the front side belt portion) located on the front side in the front-rear direction, and a back side exterior body 22 (equivalent to the rear side belt portion) located on the rear side in the front-rear direction. ), and the crotch outer body 23 connecting these. The above-mentioned members adjacent to each other in the thickness direction are joined by an adhesive or the like.

Moreover, the abdominal exterior body 21 is located here on one end side in the longitudinal direction of the absorptive body 10 , and the back exterior body 22 is located at the other end side in the longitudinal direction of the absorptive body 10 . In the longitudinal direction of the absorptive main body 10, let the side of the position of the abdominal exterior body 21 be the front side, and let the side of the position of the back side exterior body 22 be the rear side. Moreover, the crotch exterior body 23 is located on the skin side rather than the abdominal exterior body 21 and the back exterior body 22 .

In addition, in the diaper 1 of the present embodiment, the outer body 20 is composed of three members (the abdominal outer body 21, the back outer body 22, and the crotch outer body 23), but it is not limited to this. For example, the abdominal exterior body 21, the back exterior body 22, and the crotch exterior body 23 may be constituted by one member. Moreover, the structure which does not have the crotch exterior body 23 may be made.

The diaper 1 in the unfolded state shown in FIG. 2 has the absorbent body 10 folded in half at the center CL in the longitudinal direction, and the both ends in the left-right direction of the abdominal exterior body 21 and the back exterior body are joined by fusing or the like. 22 at both ends in the left-right direction to form the shorts type shown in FIG. 1 . That is, the longitudinal direction of the absorbent body 10 is along the up-down direction of the diaper 1, and the abdominal outer body 21 and the back outer body 22 are connected in a ring shape to form the waist opening 1a and a pair of leg openings 1b. Hereinafter, a region where both ends in the left-right direction of the abdominal exterior body 21 and the back exterior body 22 are joined is referred to as an end portion joining region 24 .

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

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

The top sheet 12 is a liquid-permeable sheet, and for example, a hydrophilic hot air nonwoven fabric, a spunbond nonwoven fabric, or the like can be 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. As the liquid-impermeable sheet 13a, for example, a resin film or the like can be used, and as the liquid-permeable sheet 13b, for example, a flexible nonwoven fabric or the like can be used. In addition, the back sheet 13 may have a one-layer structure of the liquid-impermeable sheet 13a.

Moreover, although not shown in detail, as shown in FIG. 1, the three-dimensional hemming part 14 which can stand up to the skin side may be provided in the both sides of the left-right direction of the absorptive main body 10.

Each of the abdominal exterior body 21 and the back exterior body 22 has, as shown in FIG. 2 , waist regions 211 and 221 where the end joint regions 24 are located in the up-down direction, and a lower side than the waist regions 211 and 221 . crotch area 212, 222.

The waistline regions 211 and 221 have a rectangular shape in plan view. In addition, the waist area 211 of the backside outer body 22 is located more than the center BCL between the center CL of the absorbent body 10 (in other words, the lower end of the diaper 1 ) and the upper end of the back side outer body 22 (in other words, the upper end of the diaper 1 ) 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 abdominal exterior body 21, the backside exterior body 22 has a larger crotch region 222, and can cover the buttocks of the wearer.

As shown in FIG. 3 , the abdominal exterior body 21 and the back exterior body 22 each include skin-side sheets 213 and 223 on the skin side, non-skin side sheets 214 and 224 on the non-skin side, and The stretchable nonwoven fabrics 215 and 225 are located between them and have stretchability at least in the left-right direction of the diaper 1 .

The skin-side sheets 213, 223 and the non-skin-side sheets 214, 224 are preferably soft sheets, and for example, spunbond nonwoven fabric, SMS nonwoven fabric, or the like can be used.

The stretchable nonwoven fabrics 215 and 225 have, for example, a polyurethane-based elastomer having elastic thermoplastic elastomer fibers, and polypropylene (PP), a polyolefin-based resin having inelastic thermoplastic resin fibers, and are applied The stretchable nonwoven fabrics 215 and 225 have stretchability in the left-right direction and the vertical direction of the paper diaper 1 by the stretchable nonwoven fabrics 215 and 225 by appropriate stretching treatment such as gear rolling. In addition, the stretching process may be performed in directions orthogonal to each other, or may be performed only in a predetermined direction. The stretchability in the predetermined direction can be exhibited when the stretching treatment is performed only in the predetermined direction, but the orientation of all fibers is not limited to the predetermined direction, and therefore the stretchability is also exhibited in the direction orthogonal to the predetermined direction.

The skin-side sheets 213, 223, the non-skin-side sheets 214, 224, and the stretchable nonwoven fabrics 215, 225 are joined by a plurality of interspersed welding parts (not shown). Therefore, for example, the skin feels softer than when it is joined by a cured adhesive. Moreover, the skin-side sheets 213 and 223 and the non-skin-side sheets 214 and 224 are bent and protruded outward in the thickness direction due to the shrinkage of the stretchable nonwoven fabrics 215 and 225 between the fused portions. That is, since the skin-side sheets 213 and 223 and the non-skin-side sheets 214 and 224 are bulged between the fused portions, the skin feels softer, and the user is visually given a soft impression. Since the fused portions are spread at relatively narrow intervals, in the diaper 1 of the present embodiment, since the diaper 1 of the present embodiment extends in multiple directions and generates fine bulges (wrinkles), it is possible to prevent unidirectional wrinkles (longitudinal wrinkles) peculiar to diapers. Therefore, the appearance of the diaper 1 is good.

Moreover, in the abdominal exterior body 21 and the back exterior body 22, a plurality of waist elastic members 26 (eg, thread rubber etc.) are arranged in the region along the edge of the waist opening 1a. Hereinafter, the area|region (area along the edge of the waist opening 1a) in which the waist elastic member 26 is provided is also called expansion-contraction area 26s. In addition, in this embodiment, in FIG. 2, the area|region enclosed by the dotted line below the expansion-contraction area|region 26s is called the base area|region 21s especially. In addition, the base region 21s is a region in which the stretchable nonwoven fabric 215 is provided between the skin-side sheet 213 and the non-skin-side sheet 214, and is a region adjacent to the stretchable region 26s from the lower side in the center of the left-right direction of the abdominal exterior body 21 .

In addition, a plurality of leg hole elastic members 27 are arranged in the region along the edge of the leg hole opening 1b. The leg elastic member 27 is the same as that of the waist elastic member 26, and is made of, for example, thread rubber or the like.

Thereby, the waist and leg circumferences of the diaper 1 are firmly attached to the wearer by the waist elastic members 26 and the leg circumference elastic members 27 . Therefore, the slippage of the diaper 1 and leakage from the leg circumference can be prevented. Moreover, the position of the high pressure area (33s of 1st high pressure area, 35 s of 2nd high pressure area) mentioned later is also hard to shift.

On the other hand, in the region where the stretchable nonwoven fabrics 215 and 225 are provided, the entire surface is gradually fitted to the wearer. For example, the adhesion in the base region 21s is improved. In addition, the pressure can be applied to the skin evenly, the tight feeling can be reduced, and the uncomfortable feeling can be suppressed (good wearing feeling).

In addition, stretchable films 33 and 35 are also arranged in the abdominal exterior body 21 and the back exterior body 22 of the diaper 1 of the present embodiment. And the 1st high pressure area|region 33s and the 2nd high pressure area|region 35s 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 is formed in a substantially hourglass shape in plan view in which the center portion in the longitudinal direction is curved inward in the left-right direction. Furthermore, as shown in FIG. 3 , the crotch outer body 23 includes a skin-side sheet 231 located on the skin side, a non-skin-side sheet 232 located on the non-skin side, and a stretchable nonwoven fabric 233, which are located on the skin side. In between, stretchability is provided in the up-down direction of the diaper 1 (longitudinal direction of the absorbent body 10). The skin-side sheet 231, the non-skin-side sheet 232, and the stretchable nonwoven fabric 233 are each joined by a plurality of fusion parts (not shown).

By the stretchable nonwoven fabric 233 of the crotch outer body 23, the absorbent core 11 can be in close contact with the lower crotch of the wearer, and even if the weight of the absorbent core 11 increases due to excretion, the sagging of the diaper 1 can be suppressed. . In addition, the stretchable nonwoven fabric 233 may have stretchability in the left-right direction of the diaper 1, or may have stretchability in the vertical direction and the left-right direction of the diaper 1. Moreover, in the crotch outer body 23, the crotch elastic member 28 is arrange|positioned along the area|region of the leg opening 1b. The crotch elastic member 28 is made of thread rubber or the like like the waist elastic member 26 and the leg elastic member 27 . Thereby, the crotch outer body 23 and the leg circumference of the wearer are formed in close contact.

＜＜About high pressure areas＞＞ Hereinafter, with reference to FIGS. 2-4, the high pressure area (33 s of 1st high pressure area and 35 s of 2nd high pressure area) of the diaper 1 of this embodiment is demonstrated. 4A to 4C are conceptual diagrams showing a state in which the diaper 1 of the present embodiment is worn. 4A is a diagram viewed from the front side (ventral side), FIG. 4B is a diagram viewed from the rear side (back side), and FIG. 4C is a diagram viewed from the side (side view). In FIGS. 4A to 4C , the locations (arrangements) in which the first high-pressure region 33s and the second high-pressure region 35s are installed are enclosed by one-dot chain lines, respectively.

In the diaper 1 of the present embodiment, two high-pressure areas (a first high-pressure area 33s and a second high-pressure area 35s) are provided below the stretchable area 26s. Here, the high-pressure region refers to a region where the pressure (tightening pressure) during wearing of the diaper 1 is higher than the region in which the stretchable nonwoven fabrics 215 and 225 are provided (eg, the base region 21s). In other words, the force for extending the high-pressure region per unit width (the first high-pressure region 33s and the second high-pressure region 35s) by unit length in the left-right direction is greater than the force for extending the base region 21s per unit width in the left-right direction by unit length bigger.

The first high pressure region 33s is provided between the end joint regions 24 at both ends in the left-right direction so as to straddle the waist region 211 of the abdominal outer body 21 and the waist region 221 of the back outer body 22, respectively. Similarly, the second high pressure region 35s is also provided in the end joint regions 24 at both ends in the left-right direction so as to straddle the waist region 211 of the abdominal outer body 21 and the waist region 221 of the back outer body 22, respectively. between.

The first high pressure region 33s is constituted by a plurality of (three in the present embodiment) stretchable films 33 arranged at intervals in the vertical direction. Moreover, the 2nd high pressure area|region 35s is also comprised by the several (3 in this embodiment) stretchable film 35 arrange|positioned at intervals in the up-down direction similarly. The stretchable films 33 and 35 are elastic members having stretchability by melting, for example, an elastomer resin such as urethane and styrene into sheets of uniform thickness. By using such a sheet-like stretchable film 33, pressure can be applied to the surface, so that marks are not easily adhered to the body, and a feeling of discomfort due to tightening or the like can be suppressed.

The three stretchable films 33 on the side of the abdominal exterior body 21 (front side) and the three stretchable films 33 on the side of the backside exterior body 22 (rear side) corresponding to the three stretchable films 33 on the side of the back exterior body 22 (rear side) are respectively above the end joint region 24 The position in the downward direction becomes arranged in the same manner. Furthermore, in the end joint region 24 , the left-right direction ends of the three stretchable films 33 (in other words, the first high-pressure regions 33 s ) on the side of the abdominal exterior body 21 and the The ends in the left-right direction of the three stretchable films 33 (in other words, the first high-pressure region 33s) are connected. Thereby, as shown in FIG. 4C , the first high-pressure region 33s on the side of the abdominal exterior body 21 and the first high-pressure region 33s on the side of the back-side exterior body 22 are continuous in the end joint region 24 In connection, the first high-pressure region 33s forms a circumferential shape across the abdominal exterior body 21 and the back exterior body 22 .

Similarly, the three stretchable films 35 on the side of the abdominal exterior body 21 and the three stretchable films 35 on the side of the backside exterior body 22 corresponding to the three stretchable films 35 on the side of the back-side exterior body 22 are respectively positioned in the up-down direction of the end joint region 24 . configured in the same way. Furthermore, in the end joint region 24 , the ends in the left-right direction of the three stretchable films 35 (in other words, the second high-pressure regions 35 s ) on the side of the abdominal exterior body 21 , and the The ends in the left-right direction of the three stretchable films 35 (in other words, the second high-pressure region 35s) are connected to each other. Thereby, as shown in FIG. 4C , the second high-pressure region 35s on the side of the abdominal exterior body 21 and the second high-pressure region 35s on the side of the back-side exterior body 22 are continuously connected in the end joint region 24, The second high pressure region 35 s is formed in a circumferential shape across the abdominal exterior body 21 and the back exterior body 22 .

Furthermore, in the end joint region 24, the first high pressure region 33s passes through the vicinity of the region (extension region 26s) along the edge of the waist opening 1a, and the second high pressure region 35s passes through the region along the edge of the leg opening 1b (formation region of the leg-hole elastic member 27 ). In addition, 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 arranged above the second high pressure region 35s, more specifically, the first high pressure region At least the upper end of the 33s is arranged above the wearer's anterior superior ilium spine, and the second high pressure region 35s is arranged so that at least the lower end is below the anterior superior ilium spine of the wearer. In this embodiment, the lower end of the first high-pressure region 33s is arranged to pass over the anterior superior spine of the ilium. In addition, the anterior superior ilium spine is the protrusion of the ilium, the largest bone of the pelvis, and the protrusion that the fingers touch when the hand is placed on the waist. Thereby, when the diaper 1 is worn, the anterior superior iliac spine of the wearer can be sandwiched between the first high pressure region 33s and the second high pressure region 35s. In this way, the anterior superior iliac spine is sandwiched between the first high pressure region 33s and the second high pressure region 35s, so that the positional displacement is less likely to occur when the diaper 1 is worn, and the target position can be reliably maintained at high pressure.

In addition, the first high-pressure region 33s is arranged so as to be convexly curved downward on the side of the abdominal outer body 21 (see FIGS. 2 and 4A ), and is arranged almost horizontally below the expansion-contraction region 26s on the side of the back outer body 22 . nearby (refer to FIG. 2 and FIG. 4B ). Therefore, in the center C in the left-right direction of the diaper 1, the lower end of the first high-pressure region 33s on the backside exterior body 22 side (rear side) is arranged first higher than the abdominal exterior body 21 side (front side) The lower end of the pressure region 33s is further on the upper side. Thereby, the lower abdomen can be tightened diagonally upward (pressure is applied), and the intra-abdominal pressure can be increased. In particular, in this embodiment, the downward protrusion is formed on the side of the abdominal outer body 21, so that the intra-abdominal pressure can be easily increased. In addition, with such a structure, the action of the muscles (abdominal muscles, etc.) around the pelvis can be assisted, and the pelvis can be stabilized. Thereby, the improvement of walkability, such as a foot lift and a stride width, can be aimed at. Moreover, as shown in FIG. 2, 33 s of 1st high pressure areas are arrange|positioned rather than the upper end of the absorptive core 11 (it does not overlap with the absorptive core 11). Thereby, the intra-abdominal pressure can be prevented from running away.

Further, the second high-pressure region 35s is arranged almost horizontally on the side of the abdominal exterior body 21 (see FIGS. 2 and 4A ), and is arranged so as to be convexly curved upward on the side of the backside exterior body 22 (see FIGS. 2 and 4A ). 4B). Therefore, 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 backside exterior body 22 side (rear side) is arranged at a second height higher than that on the abdomen side exterior body 21 side (front side). The lower end of the pressure region 35s is further on the upper side. Thereby, the intra-abdominal pressure of the lower part (lower abdomen) can be further increased by sandwiching the anterior superior spine of the ilium. In addition, since the rear exterior body 22 side is formed to be convex upward, it is easy to follow the shape of the buttocks. Moreover, the 2nd high pressure area|region 35s is arrange|positioned rather than the upper end of the absorptive core 11 (it does not overlap with the absorptive core 11). Thereby, wrinkles are hard to appear in the absorptive core 11, and absorptivity can be prevented from falling.

Moreover, the 1st high pressure area 33s and the 2nd high pressure area 35s are provided in the waist area 221 on the back side exterior body 22 side. In addition, as described above, the waist region 221 is located above the center BCL (refer to FIG. 2 ) in the vertical direction of the diaper 1 . That is, on the backside exterior body 22 side (rear side), both the first high pressure region 33s and the second high pressure region 35s are arranged above the center BCL in the vertical direction of the diaper 1 . Thereby, it is possible to avoid the tightening of the buttocks, and it is not necessary to hinder the movement such as walking.

In addition, since the first high-pressure region 33s is formed to be convex downward on the side of the abdominal outer body 21 , the first high-pressure region 33s and the second high-pressure region are located at the center C in the left-right direction on the front side of the diaper 1 . 35s overlap. In this way, in the center C in the left-right direction on the front side of the diaper 1, the first high-pressure region 33s and the second high-pressure region 35s overlap at least in part, thereby increasing the force of pulling up diagonally upward and further increasing the intra-abdominal pressure. . 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 left-right center C of the front side of the diaper 1 .

Furthermore, since the second high-pressure area 35s is formed to be convex upward on the backside outer body 22 side, the first high-pressure area 33s is different from the second high-pressure area even at the center C of the rear side of the diaper 1 in the left-right direction. The pressure regions 35s also overlap. 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 in the left-right center C of the rear side of the diaper 1 .

In the present embodiment, as shown in FIGS. 4A and 4B , the center position Jb of the overlapping portion in the center C in the left-right direction on the rear side is higher than that in the overlapping portion (the first high-pressure region 33s and the center C in the left-right direction on the front side) The center position Jf of the overlapping portion of the second high pressure region 35s) is located at a higher position (upper side). Thereby, the lower abdomen of the wearer can be easily pulled up more obliquely.

As described above, the diaper 1 of the present embodiment includes the stretchable region 26s along the edge of the waist opening 1a, and the base region adjacent to the stretchable region 26s from the lower side and the center of the abdominal outer body 21 in the left-right direction. 21s, the 1st high pressure area 33s and the 2nd high pressure area 35s provided below the expansion-contraction area 26s. The first high-pressure region 33s and the second high-pressure region 35s are formed in a circumferential shape across the abdominal outer body 21 and the back outer body 22, respectively, and in the end joint region 24, the first high-pressure region 33s and the second high-pressure region The pressure regions 35s are separated and arranged on the upper side of the second high pressure region 35s, and the lower end of the first high pressure region 33s on the back side exterior body 22 side is arranged on the abdomen in the center C in the left-right direction. The lower end of the second high-pressure region 35s on the side of the side exterior body 21 is positioned further to the upper side.

Thereby, the lower abdomen can be tightened obliquely upward, and the intra-abdominal pressure can be increased. In addition, the position is not easily displaced during wearing, and the target position can be maintained at a high pressure.

===Other Embodiments=== Although the embodiment of the present invention has been described above, the above-described embodiment is for the purpose of facilitating the understanding of the present inventor, and is not intended to limit the present invention for interpreters. In addition, the present invention can be changed and improved without departing from the gist of the present invention, and it goes without saying that the present invention also includes the equivalents thereof. For example, there may be such modifications as shown below.

Moreover, in the said embodiment, although the 2nd high pressure area|region 35s of the ventral exterior body 21 side is almost horizontal, it may be arrange|positioned so that it may protrude downward. Furthermore, in the aforementioned embodiment, the second high-pressure region 35s on the rear exterior body 22 side is formed to be convex upward, but may be arranged horizontally (and may not be convex upward). For example, in the waistline, the first high-pressure region 33s and the second high-pressure region 35s may be arranged substantially parallel to each other. In addition, at this time, on the front side and the rear side, the first high pressure region 33s and the second high pressure region 35s are formed so as not to overlap, respectively. Even at this time, by sandwiching the wearer's anterior superior iliac spine in the first high pressure region 33s and the second high pressure region 35s, the target position can be reliably maintained at high pressure and the intra-abdominal pressure can be increased. However, in this case, it is desirable to set the 2nd high pressure area|region 35s and the absorptive core 11 so that it may not overlap (arrange 35 s of 2nd high pressure area|regions above the upper end of the absorptive core 11).

In addition, in the above-mentioned embodiment, although the 1st high pressure area|region 33s and the 2nd high pressure area|region 35s are comprised by a plurality of (three) stretchable films 33 and 35, respectively, it is not limited to this. For example, a stretchable membrane can also be used to form the high pressure region. However, by forming a plurality of stretchable films (stretchable films 33, 35) at intervals up and down as in the above-mentioned embodiment, the number of members in the thickness direction where there is no stretchable film can be reduced, and the air permeability, wearability can be improved. Feel better. In addition, the member constituting the high-pressure region is not limited to a stretchable film, and a filament-shaped or belt-shaped elastic member formed of a urethane resin or natural rubber may be used.

In the above-described embodiment, in the end joint region 24, the respective high-pressure regions (the first high-pressure region 33s, the second high-pressure region 35s) are connected completely continuously, but as long as at least a part of them is continuous in the circumferential direction of the waistline Can. For example, the high pressure region on the front side and the high pressure region on the rear side are respectively along the horizontal direction, and the high pressure region on the rear side is arranged above the high pressure region on the front side, and a part of the level difference is provided in the end joint region 24. connectable. Even in such a case, since the first high-pressure region 33s and the second high-pressure region 35s are respectively continuous in at least a part of the end joint region 24, it is possible to tighten in the circumferential direction, and since the rear high-pressure region is arranged on the front side The high-pressure area of is more upward, and the lower abdomen can be tightened diagonally above.

Moreover, in a predetermined range (for example, the upper part of the absorptive core 11 ) including the center C in the left-right direction on the side of the abdominal exterior body 21 , the elastic coefficient of at least one of the stretchable films 33 and 35 may be set to larger than other parts. The elastic coefficient refers to a proportional constant between the stress of elastic deformation and the displacement (deformation), and the larger the elastic coefficient, the smaller the displacement amount with respect to the same stress. That is, when the same force is applied, the above-mentioned predetermined range may be less easily deformed than other parts. Thereby, it becomes difficult to follow the deformation|transformation of the lower abdomen due to the change of the posture when sitting, etc., and it becomes easy to hold|maintain the tightening pressure. Further, as a method of increasing the elastic modulus of a part of the stretchable film, for example, there is a method of reducing the stretchability (increasing the elastic modulus) by heating a part of the stretchable film (the above-mentioned predetermined range).

1‧‧‧Short type disposable diapers 10‧‧‧Absorptive body 11‧‧‧Absorptive core 12‧‧‧Top Sheet 13‧‧‧Back Sheet 14‧‧‧Three-dimensional folding part 20‧‧‧Exterior body 21‧‧‧Stomach outer body (front belt part) 21s‧‧‧Base area 22‧‧‧Rear side exterior body (rear side belt part) 23‧‧‧Exterior body under the crotch 24‧‧‧End joint area 26‧‧‧Waist elastic element 26s‧‧‧Retractable area 27‧‧‧Elastic member of leg circumference 28‧‧‧Elastic member under the crotch 33‧‧‧Stretchable film (elastic member) 33s‧‧‧1st high pressure area 35‧‧‧Stretchable film (elastic member) 35s‧‧‧Second high pressure area Jf‧‧‧Central location Jb‧‧‧Central location

FIG. 1 is a perspective view of a shorts-type disposable diaper 1 . [ Fig. 2 ] is a schematic plan view of the diaper 1 in an unfolded and extended state. [ Fig. 3] Fig. 3 is a schematic cross-sectional view taken along the line I-I (center in the left-right direction) of Fig. 2 . 4A to 4C are conceptual diagrams showing a state in which the diaper 1 of the present embodiment is worn. 4A is a diagram viewed from the front side (ventral side), FIG. 4B is a diagram viewed from the rear side (back side), and FIG. 4C is a diagram viewed from the side (side view).

10‧‧‧Absorptive body

21‧‧‧Stomach outer body (front belt part)

22‧‧‧Rear side exterior body (rear side belt part)

24‧‧‧End joint area

26‧‧‧Waist elastic element

33s‧‧‧1st high pressure area

35s‧‧‧Second high pressure area

Jf‧‧‧Central location

Jb‧‧‧Central location

Claims (14)

A shorts-type disposable diaper having vertical, horizontal, and front-rear directions intersecting with each other, and comprising: a front belt portion disposed on the abdomen of the wearer, and a belt disposed on the back of the wearer A shorts-type disposable diaper having a rear belt portion and a waist opening at the upper end of the front belt portion and the rear belt portion is characterized by comprising: a diaper along the edge of the waist opening. The expansion and contraction region; the base region of the expansion and contraction region adjacent to the center of the left-right direction of the front belt portion from the lower side; and the first high-pressure region and the second high-pressure region provided below the expansion and contraction region. The force for extending the unit length of the first high pressure region in the left-right direction is greater than the force for extending the base region of the unit width to the left-right direction for the unit length, and the second high pressure per unit width The force for extending the unit length of the region in the left-right direction is greater than the force for extending the base region of the unit width in the left-right direction by the unit length, and the first high-pressure region and the second high-pressure region respectively span The front-side belt portion and the rear-side belt portion are circumferentially arranged, and at both end portions in the left-right direction, the first high-pressure region and the second high-pressure region are separated from the second high-pressure region and disposed in the second high-pressure region. On the upper side, in the center in the left-right direction, the first high-pressure region on the rear side The lower end of the first high pressure region is arranged above the lower end of the first high pressure region on the front side. The shorts-type disposable diaper according to claim 1, wherein the lower end of the second high-pressure region on the rear side is arranged in the second high-pressure region on the front side in the center in the left-right direction. The lower end is closer to the upper side. The shorts-type disposable diaper according to claim 1 or claim 2, wherein the first high-pressure region of the front belt portion is provided so as to protrude downward. The shorts-type disposable diaper according to claim 1, wherein the second high pressure region of the rear belt portion is provided so as to protrude upward. The pant-type disposable diaper according to claim 1, wherein in the center of the rear belt portion in the left-right direction, both the first high-pressure area and the second high-pressure area are arranged in It is located above the center position in the vertical direction of the shorts-type disposable diaper. The pant-type disposable diaper according to claim 1, comprising an absorptive main body having an absorptive core, folded in half in the longitudinal direction, and provided on the front belt portion and the rear belt portion In between, the said 1st high pressure area|region is provided above the upper end of the said absorptive core. The pant-type disposable diaper according to claim 6, wherein the second high pressure region is also provided above the upper end of the absorptive core. The pant-type disposable diaper according to claim 1, wherein the first high-pressure region and the second high-pressure region overlap at least partially at the center in the left-right direction of the front belt portion. The pant-type disposable diaper according to claim 8, wherein the first high-pressure region and the second high-pressure region at least partially overlap at the center of the rear belt portion in the left-right direction. , the center position in the vertical direction of the overlapping portion of the first high-pressure region on the rear side and the second high-pressure region is higher than the first high-pressure region on the front side The center position in the vertical direction of the overlapping portion of the force region and the second high pressure region is further above. The pant-type disposable diaper according to claim 1, wherein at least a portion of the first high pressure region and the second high pressure region are continuous in the circumferential direction of the waist. The shorts-type disposable diaper according to claim 1, wherein the first high-pressure region and the second high-pressure region are respectively defined by a plurality of elastic members arranged at intervals in the vertical direction. form. The underpants-type disposable diaper according to claim 11, wherein in a predetermined range including the center of the front side belt portion in the left-right direction, at least one of the elastic members has a higher coefficient of elasticity than other parts. coefficient. The pants-type disposable diaper according to claim 11 or claim 12, wherein the elastic member is a sheet-like member. The shorts-type disposable diaper as described in item 1 of the scope of the patent application Pants, wherein the base region has stretchability in at least the left-right direction.

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