JP2020156673A - Pad type disposable diaper - Google Patents

Abstract

To provide a pad type disposable diaper which is easily mountain folded.SOLUTION: In a pad type disposable diaper 200 provided with standing gathers 60, the standing gathers 60 have: root parts 65 fixed to side flaps SF extending sideways from side edges of an absorber 23; body parts 66 extending outward in a width direction WD from edges on a central side in the width direction WD of the root parts 65; front lodging parts 67f and rear lodging parts 67b positioned at front end parts and rear end parts in the body parts 66; and standing parts 68 positioned between them. The body parts 66 are configured to have protruding parts 69 which protrude outward in the width direction WD by 1 to 10 mm from the side edges of the side flaps SF in an unfolded state all over a back and forth direction LD and to have gather elastic members 63 in the protruding parts 69.SELECTED DRAWING: Figure 4

Description

The present invention relates to a pad-type disposable diaper that is used by being attached to the inside of a disposable diaper such as a tape type or a pants type or underwear (hereinafter, also collectively referred to as an outer).

In pad-type disposable diapers, in order to prevent so-called side leakage, it is common to provide rising gathers on both sides that rise from the surface. There are various types of rising gathers, but many rising gathers have the following basic structures. That is, in a general rising gather, the root portion fixed to the side portion of the article, the main body portion extending from the root portion, the front end portion of the main body portion, and the rear end portion of the main body portion are fixed in an inverted state. It was attached along the front-rear direction to at least the tip of the anterior and posterior inverted portions, the non-fixed raised portion located between the anterior and posterior inverted portions of the main body portion, and the raised portion, respectively. It has a gathered elastic member.

On the other hand, pad-type disposable diapers are used for various purposes, and their wearing methods are also various. The following is one of the typical wearing methods for pad-type disposable diapers. That is, when the caregiver wears a pad-type disposable diaper on the care recipient, the pad-type disposable diaper is folded in a mountain fold (hereinafter, also simply referred to as a mountain fold) so that the back surfaces of the left and right sides are aligned. The top of the mountain fold may be placed in the crotch of the care recipient by grabbing the part opposite to the top of the diaper. Such a wearing method is considered to be preferable for female care recipients and care recipients whose legs do not open too much due to contracture.

However, in the conventional pad-type disposable diaper, the rigidity of the absorber and the contraction force of the gathered elastic member of the rising gather act as a force to resist the mountain fold, and it is not easy to fold the mountain.

Japanese Unexamined Patent Publication No. 2003-93438 Japanese Unexamined Patent Publication No. 2006-136583

Therefore, a main object of the present invention is to provide a pad-type disposable diaper that can be easily folded in a mountain.

The pad-type disposable diapers that solve the above problems are as follows.
<First aspect>
The crotch part including the center in the front-back direction and
The front part that extends forward from the center in the front-back direction,
The rear part extending from the center in the front-back direction to the rear side,
The absorber built in the range including the crotch part and
With rising gathers that rise from the surface along the excrement blockage position on both sides,
In pad-type disposable diapers
It has side flaps that extend laterally from the side edges of the absorber and
In the rising gather, the root portion fixed to the side flap, the main body portion extending outward in the width direction from the widthwise central edge of the root portion, and the front end portion and the rear end portion of the main body portion are in an inverted state. A front-falling portion and a back-falling portion, which are fixed portions, a non-fixed rising portion located between the front-falling portion and the rear-falling portion, and at least the tip portion of the rising portion are provided along the front-rear direction. It has a gathered elastic member and
The main body portion has a protruding portion that protrudes 1 to 10 mm outward in the width direction from the side edge of the side flap at least in the unfolded state over the entire front-rear direction.
The protruding portion has the gathered elastic member.
A pad-type disposable diaper that features this.

(Action effect)
In this pad type disposable diaper, the entire rising gather is located to the side of the absorber, and the tip of the rising gather is a protruding part, and this protruding part has a part or all of the gather elastic member. Therefore, when folding a mountain, the contraction force of the gathered elastic member of the rising gather is difficult to act as a force against the mountain fold, and it is easy to fold the mountain and maintain the mountain fold state.

<Second aspect>
The crotch part including the center in the front-back direction and
The front part that extends forward from the center in the front-back direction,
The rear part extending from the center in the front-back direction to the rear side,
The absorber built in the range including the crotch part and
With rising gathers that rise from the surface along the excrement blockage position on both sides,
In pad-type disposable diapers
The rising gather includes a root portion fixed to the back surface of both side portions, a first portion that wraps around the surface from the side edge of the root portion and extends toward the center in the width direction, and a width from the tip of the first portion. A main body portion having a second portion extending outward in the direction, a front lodging portion and a rear lodging portion in which the front end portion and the rear end portion of the main body portion are fixed in an inverted state, and a front lodging portion and a rear lodging portion. It has a non-fixed rising portion located between them, and a gather elastic member provided at least at the tip of this rising portion along the front-rear direction.
The main body portion has a protruding portion that protrudes 1 to 10 mm outward in the width direction from the side edge of the first portion at least in the unfolded state over the entire front-rear direction.
The protruding portion has the gathered elastic member.
A pad-type disposable diaper that features this.

(Action effect)
In this pad type disposable diaper, the tip of the second part of the rising gather is a protruding part, and since this protruding part has a part or all of the gather elastic member, the rising gather when folding a mountain The contraction force of the gathered elastic member is difficult to work as a force to resist mountain folds, and it is easy to fold mountains and maintain a mountain fold state.

<Third aspect>
The absorber has a constricted portion in a range in the front-rear direction including the crotch portion.
The trailing edge of the anterior lodging portion is posterior to the anterior edge of the constricted portion and is located within 30 mm from the anterior edge of the constricted portion.
The anterior edge of the posterior lodging portion is anterior to the posterior edge of the constriction and is located within 30 mm from the posterior edge of the constriction.
The pad type disposable diaper of the first or second aspect.

(Action effect)
In order to improve the fit around the legs, it is known that a constriction portion is provided in a range in the anteroposterior direction including the crotch portion of the absorber. If the positions of the anterior lodging portion and the posterior lodging portion are within the range of this embodiment with respect to this constricted portion, when the crotch portion is held and the mountain fold is folded, the mountain fold state is generated against the contraction force of the gather elastic member. It will be easier to hold.

<Fourth aspect>
A slit penetrating in the thickness direction or a recess provided on the back surface extends in the front-rear direction at the center of the absorber in the width direction.
The slit or recess has a cross-sectional shape in which the width becomes narrower toward the front side of the absorber.
A pad-type disposable diaper according to any one of the first to third aspects.

(Action effect)
Since the rigidity of the absorber is relatively high, the rigidity of the absorber becomes an obstacle when folding a mountain. Here, if a slit penetrating in the thickness direction or a recess provided on the back surface extends in the front-rear direction in the center of the width direction of the absorber, the absorber can easily fold along the slit or the recess. preferable. In particular, if the absorber has a cross-sectional shape such as a slit or a recess in which the width becomes narrower toward the front side of the absorber, it becomes easier to fold the mountain.

<Fifth aspect>
A slit penetrating in the thickness direction or a recess provided on the back surface extends in the front-rear direction at the center of the absorber in the width direction.
On the back surface, the slip prevention adhesive portion is provided only on the front side and the rear side of the slit or the recess.
A pad-type disposable diaper according to any one of the first to fourth aspects.

(Action effect)
Since the rigidity of the absorber is relatively high, the rigidity of the absorber becomes an obstacle when folding a mountain. Here, if a slit penetrating in the thickness direction or a recess provided on the back surface extends in the front-rear direction in the center of the width direction of the absorber, the absorber can easily fold along the slit or the recess. preferable. However, if the back surface of the pad-type disposable diaper is provided with a slip-prevention adhesive part for fixing to the outer, when the mountain fold is folded, the back surfaces will accidentally stick to each other due to the slip-prevention adhesive part and become unusable. Sometimes. On the other hand, in the case of this embodiment, since there is no slip-preventing adhesive portion in the portion that is easy to fold in a mountain, it is easy to fold in a mountain, but the back surfaces are erroneously hard to stick to each other due to the slip-preventing adhesive portion. ..

According to the present invention, there are advantages such as a pad-type disposable diaper that can be easily folded in a mountain.

It is a top view which shows the front side of the pad type disposable diaper in the unfolded state. It is a top view which shows the back side of the pad type disposable diaper in the unfolded state. FIG. 1 is a sectional view taken along the line AA of FIG. It is BB sectional view of FIG. FIG. 5 is a sectional view taken along the line CC of FIG. It is sectional drawing of the absorber. It is a top view which shows the front side of the pad type disposable diaper in the unfolded state. It is a top view which shows the back side of the pad type disposable diaper in the unfolded state. FIG. 7 is a sectional view taken along the line AA of FIG. FIG. 7 is a cross-sectional view taken along the line BB of FIG. It is a perspective view which shows the usage method of a pad type disposable diaper schematicly.

Hereinafter, an example of a pad-type disposable diaper will be described with reference to the attached drawings. 1 to 5 show a pad-type disposable diaper 200. This pad-type disposable diaper 200 has a crotch portion M including the center 201 of the front-rear LD, a front portion F1 extending anterior to the center 201 of the front-rear LD, and a posterior portion of the center 201 of the front-rear LD. It has a rear portion B1 that exists. The dimensions of each part can be appropriately determined. For example, the total length (length in the front-rear direction) L1 of the article can be about 200 to 480 mm, and the total width W1 can be about 120 to 200 mm.

The pad-type disposable diaper 200 includes an absorber 23 built in a range including the crotch portion M, a liquid-permeable top sheet 22 that covers the front side of the absorber 23, and a liquid-impermeable sheet that covers the back side of the absorber 23. It has 21 and. Hereinafter, the materials and characteristic parts of each part will be described in order. As the non-woven fabric in the following description, a known non-woven fabric can be appropriately used depending on the site and purpose. Examples of the constituent fibers of the non-woven fabric include olefin-based fibers such as polyethylene and polypropylene, polyester-based and polyamide-based synthetic fibers (including single-component fibers and composite fibers such as core sheaths), as well as recycled rayon and cupra. Fibers, natural fibers such as cotton, and the like can be selected without particular limitation, and these can be mixed and used. In order to increase the flexibility of the non-woven fabric, it is preferable that the constituent fibers are crimped fibers. Further, even if the constituent fibers of the non-woven fabric are hydrophilic fibers (including hydrophobic fibers made hydrophilic by the hydrophilic agent), they are either hydrophobic fibers or water-repellent fibers (water-repellent fibers made water-repellent by the water-repellent agent). It may be (including aqueous fibers). In addition, the non-woven fabric generally has a short fiber non-woven fabric, a long fiber non-woven fabric, a spunbond non-woven fabric, a melt blown non-woven fabric, a spunlace non-woven fabric, a thermal bond (air-through) non-woven fabric, and a needle punch depending on the fiber length, the sheet forming method, the fiber bonding method, and the laminated structure. It is classified into non-woven fabrics, point-bonded non-woven fabrics, laminated non-woven fabrics (SMS non-woven fabrics having a melt blown layer sandwiched between spunbond layers, SMMS non-woven fabrics, etc.), and any of these non-woven fabrics can be used.

As the absorber 23, a composite fiber of pulp fibers, an aggregate of filaments such as cellulose acetate, or a non-woven fabric is basically used, and a highly absorbent polymer is mixed and fixed as needed. .. If necessary, the absorber 23 can be wrapped with crepe paper or a non-woven fabric (not shown). Further, the shape of the absorber 23 can be an appropriate shape such as a rectangular shape, but in the illustrated example, the constricted portion 23n narrower than both the front and rear sides is provided in the range of the front-rear direction LD including the crotch portion M. It has a shape (approximately an hourglass shape). The fiber graining and the absorbent polymer graining of the absorber 23 can be appropriately determined, but the fiber graining is preferably about 100 to 600 g / m ² , and the fiber graining is about 0 to 400 g / m ^2. It is preferable to do so.

Since the rigidity of the absorber 23 is relatively high, the rigidity of the absorber 23 becomes an obstacle when folding the pad-type disposable diaper 200 in a mountain fold as shown in FIG. Here, when a slit 23s penetrating in the thickness direction extends in the front-rear direction LD at the center of the width direction WD of the absorber 23 as shown in FIG. 6, the absorber 23 is mountain-folded along the slit 23s. This is preferable because the pad type disposable diaper 200 can be easily folded as a result. In particular, the cross-sectional shape of the slit 23s is toward the front side of the absorber 23 as shown in FIG. 6 (c) rather than having a constant width in the thickness direction of the absorber 23 as shown in FIG. 6 (a). The narrower the width, the easier it is to fold the mountain. As shown in FIGS. 6B and 6D, the same applies even if the recess 23m is provided on the back surface of the absorber 23 instead of the slit 23s. Of course, these slits 23s or recesses 23m can be omitted.

When the absorber 23 is provided with the slit 23s or the recess 23m, the dimensions thereof can be appropriately determined, but the dimension of the front-rear LD of the slit 23s or the recess 23m is, for example, about 30 to 70% of the total length of the absorber 23. be able to. Further, the dimension of the WD in the width direction of the slit 23s or the recess 23m can be, for example, about 5 to 30 mm.

A liquid impermeable sheet 21 is provided on the back side of the absorber 23. As the liquid impermeable sheet 21, in addition to a polyethylene film or the like, a sheet having moisture permeability without impairing water shielding can be used from the viewpoint of preventing stuffiness. This water-impervious / moisture-permeable sheet is a microporous sheet obtained by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in the uniaxial or biaxial direction. Can be used. In the illustrated example, the liquid impermeable sheet 21 protrudes around the absorber 23, but does not have to protrude around the absorber 23.

The outer surface (back surface) of the liquid-impermeable sheet 21 is covered with the exterior sheet 25. Various non-woven fabrics can be used as the exterior sheet 25.

The front side of the absorber 23 is covered with a top sheet 22. In the illustrated example, the absorber 23 partially protrudes from the side edge of the top sheet 22, but the width of the top sheet 22 can be widened so that the side edge of the absorber 23 does not protrude. As the top sheet 22, a perforated or non-perforated non-woven fabric, a perforated plastic sheet, or the like is used.

As shown in the examples shown in FIGS. 7 to 10 described later, in order to prevent the liquid that has permeated the top sheet 22 from returning, an intermediate sheet (also called a second sheet) having liquid permeability on the back side of the top sheet 22. ) 24 can be provided. The intermediate sheet 24 may be omitted.

As the intermediate sheet 24, various non-woven fabrics can be preferably used, and a particularly bulky air-through non-woven fabric can be preferably used. It is preferable to use a composite fiber having a core-sheath structure for the air-through non-woven fabric. In this case, the resin used for the core may be polypropylene (PP), but polyester (PET) having high rigidity is preferable. Basis weight is preferably ^{17~80g / m 2, 25~60g / m} 2 is more preferable. The thickness of the raw material fiber of the non-woven fabric is preferably 2.0 to 10 dtex. In order to make the non-woven fabric bulky, it is also preferable to use eccentric fibers having no core in the center, hollow fibers, and eccentric and hollow fibers as mixed fibers of all or a part of the raw material fibers.

Although the intermediate sheet 24 of the illustrated example is arranged in the center shorter than the width of the absorber 23, it may be provided over the entire width. Further, the intermediate sheet 24 may be provided over the entire length of the diaper, but may be provided only in the intermediate portion including the excretion position as shown in the illustrated example.

The front and rear ends of the pad-type disposable diaper 200 are end flap EFs in which the absorber 23 does not exist, which extend from the front and rear ends of the absorber 23 to both front and rear sides, respectively. The material constituting the end flap EF is not particularly limited, but in the illustrated example, it is a portion of the liquid permeable sheet 21, the exterior sheet 25, and the top sheet 22 that extends to both the front and rear sides of the absorber 23. ing.

Further, both side portions of the pad type disposable diaper 200 are side flap SFs extending to the side of the absorber. The material constituting the side flap SF is not particularly limited, but in the illustrated example, the width direction WD of the absorber 23 in the liquid permeable sheet 21, the exterior sheet 25, the top sheet 22, and the gather sheet 62. It is a part that extends to both sides. Including these, the materials can be bonded by welding the materials such as heat seal and ultrasonic seal in addition to the hot melt adhesive shown by the dot pattern in the drawing.

(Get up gather)
In order to block urine and loose stools moving laterally on the top sheet 22 and prevent lateral leakage, both sides of the widthwise WD of the surface of the disposable diaper are side of the top sheet 22 along the blocking position of excrement. Rising gathers 60 that rise (protrude) from the portion to the skin side are provided over the entire front-rear direction.

The rising gather 60 of the illustrated example includes a root portion 65 fixed to the side flap SF, a main body portion 66 extending outward in the width direction from the widthwise central edge of the root portion 65, and a front end of the main body portion 66. A non-fixed rising portion located between the front lodging portion 67f and the rear lodging portion 67b, which are the portions whose portions and the rear end portions are fixed in the collapsed state, and the front lodging portion 67f and the rear lodging portion 67b of the main body portion 66. 68 and a gather elastic member 63 fixed in a state of being extended in the front-rear direction are provided at least at the tip of the raised portion 68. The rising gather 60 is formed by a gather sheet 62 having a two-layer structure folded at the tip, and the gather elastic member 63 is arranged between the layers. It is desirable that the contraction force of the gather elastic member 63 does not act on the front lodging portion 67f and the back lodging portion 67b. In addition, in the portion where the contraction force of the gather elastic member 63 does not act, in addition to the portion which does not have the gather elastic member 63, the gather elastic member 63 is provided but the gather elastic member 63 is not fixed to the gather sheet 62, which is natural. Including the part that has contracted to the longest.

In the main body portion 66 of the rising gather 60, both ends of the LD in the front-rear direction are a front lodging portion 67f and a rear lodging portion 67b, but the portion between them is a non-fixed rising portion 68, and this rising portion 68 Comes to stand up due to the contraction force of the gather elastic member 63. When the diaper is attached, the diaper is attached to the body in a boat shape, and the contraction force of the gather elastic member 63 acts on the body. Therefore, the contraction force of the gather elastic member 63 causes the gather 60 to stand up and elastically adhere to the legs. As a result, so-called lateral leakage from around the legs is prevented.

The material of the gather sheet 62 is not particularly limited, but a flexible, uniform and concealing non-woven fabric such as a spunbonded non-woven fabric (SS, SSS, etc.), an SMS non-woven fabric (SMS, SMSMS, etc.), a melt-blown non-woven fabric, etc. Water-repellent treatment with silicone or the like can be preferably used. The fiber texture of the non-woven fabric used for the gather sheet 62 is preferably about 10 to 30 g / m ² . As the gather elastic member 63, an elongated member such as a thread, a string, or a band can be preferably used. When spandex rubber is used, the thickness is preferably 470 to 1240 dtex, more preferably 620 to 940 dtex. The elongation rate at the time of fixing is preferably 150 to 350%, more preferably 200 to 300%. A plurality of gather elastic members 63 may be provided at intervals in the width direction WD in each rising gather 60, or only one gather elastic member 63 may be provided. When a plurality of gather elastic members 63 are provided, the interval 60d in the width direction (see FIG. 9) can be, for example, about 3 to 10 mm. Further, as in the examples shown in FIGS. 7 to 10 described later, the waterproof film 64 can be interposed between the gather sheets 62 folded in two.

The dimensions of the rising gather 60 can be appropriately determined, and for example, the standing height of the rising gather 60 (the length in the width direction of the main body portion 66 in the deployed state) W2 can be 15 to 60 mm, particularly 20 to 40 mm.

Characteristically, the main body portion 66 has a protruding portion 69 that protrudes 1 to 10 mm outside the side edge of the side flap SF in the width direction WD at least in the unfolded state over the entire front-rear direction LD. The portion 69 has a gather elastic member 63. In this way, the entire rising gather 60 is located laterally to the absorber 23, and the tip of the rising gather 60 is a protruding portion 69, and a part of the gather elastic member 63 or a part of the gather elastic member 63 is formed on the protruding portion 69. If all of them are held, when the mountain fold state is shown in FIG. 11, the contraction force of the gather elastic member 63 of the rising gather 60 is difficult to act as a force against the mountain fold, and it is easy to fold the mountain and the mountain fold state. Easy to hold. Reference numeral 100 in FIG. 11 indicates the wearer's torso, and reference numeral 101 indicates the wearer's legs.

The more preferable width direction WD dimension of the protruding portion 69 is 5 to 10 mm. Further, the number of gather elastic members 63 located at the protruding portion 69 may be one, but a plurality of gather elastic members 63 is preferable. Further, it is preferable that the gather elastic member 63 is not provided other than the protruding portion 69, but it may be provided in other than the protruding portion 69 as in the examples shown in FIGS. 7 to 10 described later. Further, it is preferable that the elastic member is not provided in the portion other than the rising gather 60 in the side flap SF, but it may be provided.

7 to 10 show another pad-type disposable diaper 200 having a rising gather 60. The rising gathers 60 include a root portion 65 fixed to the back surface of both sides of the pad-type disposable diaper 200, and a first portion 60A extending from the side edge of the root portion 65 to the surface and extending toward the center of the WD in the width direction. A main body portion 66 having a second portion 60B extending outward from the tip of the first portion 60A to the outside of the WD in the width direction, and a front lodging portion in which the front end portion and the rear end portion of the main body portion 66 are fixed in an inverted state. A non-fixed rising portion 68 located between the 67f and the rear lodging portion 67b, the front lodging portion 67f and the rear lodging portion 67b, and gather elasticity provided at least at the tip of the rising portion 68 along the front-rear direction LD. It has a member 63. The main body portion 66 has a protruding portion 69 over which the second portion 60B protrudes 1 to 10 mm outside the side edge of the first portion 60A in the width direction WD at least in the unfolded state over the entire LD in the front-rear direction. The protruding portion 69 has a gather elastic member 63. Therefore, in this pad type disposable diaper 200, the tip of the second portion 60B of the rising gather 60 is a protruding portion 69, and this protruding portion 69 has a part or all of the gather elastic member 63. When folding a mountain, the contraction force of the gather elastic member 63 of the rising gather 60 is difficult to act as a force against the mountain fold, and it is easy to fold the mountain and maintain the mountain fold state.

Also in the examples shown in FIGS. 7 to 10, the more preferable dimensions of the WD in the width direction of the protruding portion 69 are the same as those shown in FIGS. 1 to 5. Further, the number of gather elastic members 63 located at the protruding portion 69 may be one, but it is also preferable that there are a plurality of gather elastic members 63. On the other hand, in the examples shown in FIGS. 7 to 10, the rising portion 68 has the first portion 60A and the second portion 60B, and since they rise respectively, the tip portion of the first portion 60A (that is, the second portion in the first portion 60A). It is preferable that the gather elastic member 63 is also provided at the end portion on the 60B side).

On the other hand, when the absorber 23 has the constricted portion 23n in the range of the anterior-posterior LD including the crotch portion M, in any of the examples shown in FIGS. 1 to 5 and the examples shown in FIGS. 7 to 10. The trailing edge of the anterior lodging portion 67f is posterior to the anterior edge of the constricted portion 23n and is located within 30 mm from the anterior edge of the constricted portion 23n, and the anterior edge of the posterior lodging portion 67b is posterior to the constricted portion 23n. If it is on the front side of the edge and is located within 30 mm from the trailing edge of the constricted portion 23n, when the crotch portion M is held and folded in a mountain, it is in a mountain-folded state against the contraction force of the gather elastic member 63. It is preferable because it makes it easier to hold.

(Adhesive layer)
As shown in FIGS. 2, 3 and 5, a slip-preventing adhesive portion 30 can be provided on the back surface of the pad-type disposable diaper 200, that is, on the back surface of the exterior sheet 25 in the illustrated example. The slip prevention adhesive portion 30 is a portion having a layer of an adhesive. As shown in the illustrated example, it is desirable that the slip-preventing adhesive portion 30 is detachably covered with a release sheet 31 and the release sheet 31 is peeled off to expose the slip-prevention adhesive portion 30 during use.

The slip prevention adhesive portion 30 is provided continuously along the front-rear direction LD including the crotch portion M, is provided in each of the front portion F1 and the rear portion B1, is provided in only one of them, the crotch portion M and the like. It may be provided only in the middle portion of the front-rear direction LD. However, depending on the position of the slip prevention adhesive portion 30, when the mountain is folded, the back surfaces may be accidentally stuck to each other by the slip prevention adhesive portion 30 and become unusable. Therefore, as shown in FIGS. 2 and 5, when the absorber 23 has the slit 23s (or the recess 23m), the slip prevention adhesive portion 30 is provided only on the front side and the rear side of the slit 23s (or the recess 23m) on the back surface. Is preferably provided. As a result, since there is no slip-preventing adhesive portion 30 in the portion that is easy to fold in a mountain, it is easy to fold the mountain, but the back surfaces are not easily stuck to each other by the slip-preventing adhesive portion 30. In this case, one slip-prevention adhesive portion 30 may be provided in each of the front portion F1 and the rear portion B1, or may be provided in a plurality of locations.

<Explanation of terms in the specification>
The following terms in the specification have the following meanings unless otherwise specified in the specification.

-The "front-back direction" means the direction indicated by the symbol LD in the figure (vertical direction), and the "width direction" means the direction indicated by the WD in the figure (horizontal direction), and the front-back direction and the width direction. Are orthogonal.

-The "front side" means the one closer to the wearer's skin when worn, and the "back side" means the one farther from the wearer's skin when worn.

-The "front surface" means the surface of the member that is closer to the wearer's skin when worn, and the "back surface" means the surface of the member that is farther from the wearer's skin when worn.

-"Elongation rate" means a value when the natural length is 100%. For example, an elongation rate of 200% is synonymous with an elongation ratio of 2 times.

-"Gel strength" is measured as follows. Artificial urine (urea: 2 wt%, sodium chloride: 0.8 wt%, calcium chloride dihydrate: 0.03 wt%, magnesium sulfate heptahydrate: 0.08 wt%, and ion-exchanged water: 97.09 wt% Add 1.0 g of highly absorbent polymer to 49.0 g (mixed product) and stir with a stirrer. The produced gel is left in a constant temperature and humidity chamber at 40 ° C. × 60% RH for 3 hours, then returned to room temperature, and the gel strength is measured with a card meter (Curdmeter-MAX ME-500 manufactured by I. techno Engineering).

-"Grandming" is measured as follows. After pre-drying the sample or test piece, leave it in a test room or device under standard conditions (test location: temperature 23 ± 1 ° C., relative humidity 50 ± 2%) to bring it to a constant weight. Pre-drying refers to constant weight of a sample or test piece in an environment at a temperature of 100 ° C. It is not necessary to pre-dry the fibers having an official moisture content of 0.0%. A sample having a size of 100 mm × 100 mm is cut out from the test piece in a constant weight state using a sampling template (100 mm × 100 mm). The weight of the sample is measured and multiplied by 100 to calculate the weight per square meter, which is used as the index.

-The "thickness" is automatically measured using an automatic thickness measuring device (KES-G5 handy compression measurement program) under the conditions of a load of 0.098 N / cm ² and a pressurized area of 2 cm ² .

-"Unfolded state" means a state in which the unfolded state is flat without shrinkage or slack.

-Unless otherwise specified, the dimensions of each part mean the dimensions in the unfolded state, not in the natural length state.

-If there is no description about the environmental conditions in the test or measurement, the test or measurement shall be performed in a test room or equipment under standard conditions (test location: temperature 23 ± 1 ° C, relative humidity 50 ± 2%). To do.

The present invention can be used for pad-type disposable diapers having an adhesive layer on the back surface, pad-type disposable diapers fixed to the inner surface of underwear, such as sanitary napkins.

21 ... Liquid permeable sheet, 22 ... Top sheet, 23 ... Absorber, 23m ... Recess, 23n ... Constricted part, 23s ... Slit, 25 ... Exterior sheet, 30 ... Adhesive part, 31 ... Peeling sheet, 60 ... Rise up gather , 60A ... 1st part, 60B ... 2nd part, 63 ... Gather elastic member, 65 ... Root part, 66 ... Main body part, 67b ... Rear lodging part, 67f ... Front lodging part, 68 ... Rising part, 69 ... Overhanging part , 100 ... wearer's torso, 101 ... wearer's legs, 200 ... pad type disposable diaper, B1 ... rear part, EF ... end flap, F1 ... front part, LD ... front-back direction, M ... crotch part, SF ... side Flap, WD ... width direction.

Claims (5)

The crotch part including the center in the front-back direction and
The front part that extends forward from the center in the front-back direction,
The rear part extending from the center in the front-back direction to the rear side,
The absorber built in the range including the crotch part and
With rising gathers that rise from the surface along the excrement blockage position on both sides,
In pad-type disposable diapers
It has side flaps that extend laterally from the side edges of the absorber and
In the rising gather, the root portion fixed to the side flap, the main body portion extending outward in the width direction from the widthwise central edge of the root portion, and the front end portion and the rear end portion of the main body portion are in an inverted state. A front-falling portion and a back-falling portion, which are fixed portions, a non-fixed rising portion located between the front-falling portion and the rear-falling portion, and at least the tip portion of the rising portion are provided along the front-rear direction. It has a gathered elastic member and
The main body portion has a protruding portion that protrudes 1 to 10 mm outward in the width direction from the side edge of the side flap at least in the unfolded state over the entire front-rear direction.
The protruding portion has the gathered elastic member.
A pad-type disposable diaper that features this. The crotch part including the center in the front-back direction and
The front part that extends forward from the center in the front-back direction,
The rear part extending from the center in the front-back direction to the rear side,
The absorber built in the range including the crotch part and
With rising gathers that rise from the surface along the excrement blocking position on both sides,
In pad-type disposable diapers
The rising gather includes a root portion fixed to the back surface of both side portions, a first portion that wraps around the surface from the side edge of the root portion and extends toward the center in the width direction, and a width from the tip of the first portion. A main body portion having a second portion extending outward in the direction, a front lodging portion and a rear lodging portion in which the front end portion and the rear end portion of the main body portion are fixed in an inverted state, and a front lodging portion and a rear lodging portion. It has a non-fixed rising portion located between them, and a gather elastic member provided at least at the tip of the rising portion along the front-rear direction.
The main body portion has a protruding portion that extends 1 to 10 mm outward in the width direction from the side edge of the first portion at least in the unfolded state over the entire front-rear direction.
The protruding portion has the gathered elastic member.
A pad-type disposable diaper that features this. The absorber has a constricted portion in a range in the front-rear direction including the crotch portion.
The trailing edge of the anterior lodging portion is posterior to the anterior edge of the constricted portion and is located within 30 mm from the anterior edge of the constricted portion.
The anterior edge of the posterior lodging portion is anterior to the posterior edge of the constriction and is located within 30 mm from the posterior edge of the constriction.
The pad-type disposable diaper according to claim 1 or 2. A slit penetrating in the thickness direction or a recess provided on the back surface extends in the front-rear direction at the center of the absorber in the width direction.
The slit or recess has a cross-sectional shape in which the width becomes narrower toward the front side of the absorber.
The pad-type disposable diaper according to any one of claims 1 to 3. A slit penetrating in the thickness direction or a recess provided on the back surface extends in the front-rear direction at the center of the absorber in the width direction.
On the back surface, the slip prevention adhesive portion is provided only on the front side and the rear side of the slit or the recess.
The pad-type disposable diaper according to any one of claims 1 to 4.

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