JP2016187384A - Disposable diaper - Google Patents

Abstract

Disclosed is a disposable diaper that has an improved packaging form and can secure the amount of absorption required for an absorbent body.
SOLUTION: The absorber has a narrow middle portion in the front-rear direction, and the front end side and the rear end side have a wide portion formed wider to the left and right than the width of the intermediate portion,
The widened portions XF and XB that extend to the left and right of the width of the intermediate portion in the wide portion are provided with contraction means 13S that contracts the width dimension when receiving a force toward the center in the width direction.
[Selection] Figure 6

Description

  The present invention relates to a disposable diaper having an improved absorbent body shape.

  For example, a pants-type disposable diaper includes an exterior body that extends from the wearer's abdomen through the crotch to the back side, and an interior body including the absorbent body provided with the exterior body. The waist opening and the pair of left and right leg openings are formed by joining the both side edges of the body and the both side edges on the back side of the exterior body. In general, a three-dimensional gather that protrudes toward the body is formed.

  Moreover, in a pants-type disposable diaper, various elastic members such as various elastic members such as a waist elastic member, a waist lower elastic member, a curved elastic member, and the like are provided on the exterior body in order to improve fit to the body. Is fixed in an expanded state. These elastic members improve the fit to the body mainly by contraction in the width direction.

  On the other hand, what is called an hourglass shape is known as the absorber. This hourglass-shaped absorbent body is formed in order to satisfy both of holding a necessary amount of absorption and ensuring fit around the legs.

However, in a product in which the absorber is an hourglass shape and the exterior body is provided with an elastic member, the absorbent body is folded in a predetermined form, and a plurality of these are laminated and gusset-wrapped.
However, since the hourglass-shaped absorber has a narrow middle portion in the front-rear direction, and the front end portion side and the rear end portion side have wide portions formed wider on the left and right than the width of the intermediate portion, After the product is flattened, it is folded and packaged so as to fold toward the center in the width direction with the outer edge position of the wide portion as a boundary.
However, in this case, since the outer position of the narrow intermediate portion in the front-rear direction is deviated toward the center in the width direction with respect to the outer edge position of the wide portion, the outer shape after folding is caused by the deviation. In particular, it does not become a rectangular parallelepiped and tends to collapse at the front-rear direction intermediate portion (groin portion), and the gusset packaging form may not be beautiful.

  In addition, although there is substantially no relationship with this invention, there exists prior art (patent document 1) which formed the low weight part in the absorber. The low basis weight part induces standing on the user side.

JP 2011-115484 A

  As far as the present inventor is aware, it seems that no attempt has been made in the prior art to improve the packaging form in which the above problems remain.

  Then, the main subject of this invention is providing the disposable diaper which the packaging form is improved and the amount of absorption required for an absorber can be ensured.

According to the present invention that has solved the above problems, in a disposable diaper having an absorbent body extending to a ventral part and a dorsal part via a crotch part,
The absorbent body has a front-rear direction intermediate portion formed with a narrow width, and the front end portion side and the rear end portion side have a wide portion formed wider on the left and right than the width of the intermediate portion,
A disposable diaper is provided in which the widened portion of the widened portion, which is widened to the left and right of the width of the intermediate portion, is provided with a contraction means for reducing the widthwise dimension when receiving a force toward the center in the widthwise direction.

The advantages brought about by the present invention will be described later with specific examples. The outline of the advantages is as follows.
That is, according to the present invention, when the widened portion, which is widened to the left and right of the width of the intermediate portion, is provided with a shrinking means for reducing the widthwise dimension when receiving a force toward the center in the widthwise direction, prior to packaging. After flattening the product, when folded to the center in the width direction with the outer edge position of the wide part as the boundary, the outer position of the narrow front and rear intermediate part is the width direction with respect to the outer edge position of the wide part Even if it is displaced to the center side, the amount of displacement is small, so that the outer shape of the folded product is almost a rectangular parallelepiped, which is satisfactory as a final packaging form.
On the other hand, the outer shape of the absorber is a so-called substantially hourglass shape and has a wide portion at the front and rear, so that a necessary amount of absorption can be ensured without impairing the fit at the crotch portion.

  The contraction means can be formed by a front-rear direction slit or a front-rear direction emboss formed at the widened portion.

  The contraction means can also be configured by forming a lower basis weight portion in the widened portion than a midweight portion in the middle of the wide portion.

  As a specific application example of the present invention, an absorber is provided that extends to the abdominal part and the dorsal part via the crotch part, and at least the front-rear direction end is longer in the front-rear direction than the absorber, and the width of the absorber The absorbent body is disposed on a wider exterior sheet, and the waist opening and the pair of left and right leg openings are formed by joining the abdominal side edges and the back side edges of the exterior sheet, respectively. A pants-type disposable diaper in which is formed.

  The pants-type disposable diaper has a configuration in which the wide portion is folded in the center in the width direction at each base and folded in the front-rear direction, and the product is stored in a flexible package. Improvement effect is high.

  As an element that gives a force toward the center in the width direction, a mode is proposed in which the elastic member is contracted by an elastic member that extends in the left-right direction and is fixed in an extended state on the abdominal portion and the back portion.

  In the pants-type disposable diaper, as the contraction means, there is a front-rear direction slit or front-rear direction emboss formed in the widened part, or a lower weight part formed in the widened part than the middle weight of the wide part. be able to.

  As described above, according to the present invention, the packaging form (particularly the outer form after packaging) is improved, and there are advantages such as ensuring the amount of absorption necessary for the absorbent body.

It is a top view (inner surface side) of the underpants type disposable diaper of a deployment state. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. FIG. 4 is a sectional view taken along line 4-4 of FIG. It is a top view for description of an absorber. It is a top view of the example of slit formation to an absorber. It is a top view of the example of a fabric weight change of an absorber. It is a top view which shows notionally the example of the width direction contraction of the absorber according to this invention. It is a perspective view for description of a manufacturing process. (A)-(c) is a top view for description of the example of folding.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the dot pattern (gray display) part in a figure has shown joining means, such as a hot-melt-adhesive.

  First, after explaining an example of the pants-type disposable diaper shown in FIGS. 1 to 5 that does not form a tack according to the present invention, an example of forming the tack according to the present invention will be described with reference to the drawings after FIG. .

<Example of disposable diapers>
The pants-type disposable diaper shown in FIGS. 1 to 5 (hereinafter also simply referred to as a diaper) includes an outer body 20 that forms the outer surfaces of the front side F and the rear side B, and an inner surface of the absorbent body outer body 20 on the crotch portion G. The interior body 10 extends and is fixed to the abdominal side portion and the back side portion via the inner surface, and the interior body 10 is absorbed between the liquid-permeable top sheet 11 and the liquid-impermeable back side sheet 12. The body 13 is interposed.

  In manufacturing, after the back surface of the interior body 10 is joined to the inner surface (upper surface) of the exterior body 20 by a joining means such as a hot melt adhesive, the interior body 10 and the exterior body 20 are referred to as shown in FIG. Is folded at the center in the front-rear direction (longitudinal direction), which is the boundary between the front side F and the rear side B, and both side portions thereof are joined to each other by heat welding or hot melt adhesive to form the side seal portion 21. The pants-type disposable diaper is formed with a waist opening and a pair of left and right leg openings.

(Structural example of interior body)
Although a well-known thing can be employ | adopted as the interior body 10, as the structural example is shown in FIGS. 2-4, the liquid-permeable surface sheet 11 which consists of a nonwoven fabric etc., and the liquid-impermeable back surface side which consists of polyethylene etc. It has a structure in which an absorber 13 is interposed between the sheet 12 and absorbs and holds excretory liquid that has permeated through the top sheet 11. The overall planar shape of the interior body 10 is not particularly limited, but can be substantially rectangular as illustrated.

  As the liquid-permeable surface sheet 11 covering the surface side (skin contact surface side) of the absorbent body 13, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid permeable surface sheet 11, urine and the like are quickly absorbed, and the dry touch property is excellent. The liquid permeable top sheet 11 is wound around the side edge of the absorber 13 and extends to the back side of the absorber 13.

  As the liquid-impermeable back sheet 12 that covers the back surface side (non-skin contact surface side) of the absorbent body 13, a liquid-impermeable plastic sheet such as polyethylene or polypropylene is used. Those having wettability are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. is there.

Absorbent body 13 is a known one, for example, a pulp fiber stack, a filament aggregate such as cellulose acetate, or a non-woven fabric, mixed with a superabsorbent polymer as necessary, fixed, etc. Can be used. The absorbent body 13 can be packaged with a wrapping sheet 14 having liquid permeability and liquid retention, such as crepe paper, if necessary, for holding the shape and polymer.
The overall shape of the absorbent body 13 is formed in a substantially hourglass shape having a narrowed portion 13N having a narrower width than the front and rear sides at the crotch portion, but may have an appropriate shape such as a rectangular shape.

  A solid gather BS that fits around the legs can be formed on both sides of the interior body 10. As shown in FIGS. 3 and 4, the three-dimensional gather BS includes a fixed portion fixed to a side portion on the back surface of the interior body, and a side portion on the surface of the interior body from the fixed portion to the side of the interior body. The body part that extends to the front, the front and rear ends of the body part in a lying state, and the lying part that is fixed to the side of the surface of the interior body, and the freedom part that is formed with this lying part being unfixed The portion is formed of a gathered nonwoven fabric 15 that is turned into a double sheet by folding.

  Further, between the double sheets, an elongated gather elastic member 16 is disposed at the tip of the free part. The gather elastic member 16 is for forming a three-dimensional gather BS by raising a non-woven fabric portion protruding from the absorber side edge portion by elastic stretching force as shown by a two-dot chain line in FIG. 3 in the product state.

  The liquid-impermeable back sheet 12 enters the double sheet-like gathered nonwoven fabric 15 and constitutes a leak-proof wall on the lower end side of the three-dimensional gather BS as shown in FIG. . As the liquid-impermeable back side sheet 12, it is desirable to use an opaque sheet so that brown such as defecation and urine does not appear. As the opacification, a plastic film and a pigment and filler such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc and barium sulfate are preferably used.

  As the gathered elastic member 16, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, and polyester that are usually used can be used. As the gather elastic member 16, a tape-like member having a certain width can be used in addition to a thread-like shape as illustrated.

  In the same manner as the liquid-permeable surface sheet 11, the material fibers constituting the gathered nonwoven fabric 15 are olefin-based, polyester-based, amide-based synthetic fibers such as polyethylene or polypropylene, regenerated fibers such as rayon and cupra, and cotton. Non-woven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used. It is preferable to use a nonwoven fabric that suppresses the basis weight and has excellent air permeability. Furthermore, for the gathered nonwoven fabric 15, in order to prevent the transmission of urine and the like, to prevent fogging, and to enhance the touch to the skin (dry feeling), silicon-based, paraffin metal-based, alkylchromic croid-based water repellent, etc. It is desirable to use a water-repellent non-woven fabric coated with.

(External body structure example)
As shown in FIGS. 2 to 4, the exterior body 20 has a two-layer structure including a press sheet 20 </ b> A and a back sheet 20 </ b> B each made of a nonwoven fabric, and the back sheet 20 </ b> A and the back sheet 20 </ b> B. Various elastic members are disposed between the nonwoven fabrics of the folded portion 20C formed by folding the sheet 20B to the inner surface side at the waist opening edge, and elasticity is imparted. The planar shape has a pseudo hourglass shape as a whole by the concave leg surrounding lines 29 formed to form leg openings on both sides of the middle. In order to reduce costs and improve the air permeability of the crotch part, the presser sheet 20A and the backsheet 20B are divided into two parts in the front and rear, and the two are separated from each other in the crotch part, or the presser sheet 20A and the back Any one of the sheets 20B may be divided into two in the front-back direction, and the divided sheets may be arranged so as to be separated from each other at the crotch portion, and the sheet at the crotch portion may be a single sheet.

  In the exterior body 20 of the illustrated form, as the elastic member, in the developed shape shown in FIG. 1, the waist elastic member 24 disposed in the vicinity of the waist opening 23 and the front side F and the rear side B are vertically spaced. And a plurality of lower waist elastic members 25 arranged along the width direction, and one side seal portion separately from the lower waist elastic member group 25 on each of the front side F and the rear side B. 21 crossing each other, extending in a pattern from 21 toward the crotch portion along one leg opening, crossing the crotch portion, and reaching the other side seal portion 21 along the other leg opening. There are provided a plurality of curved elastic members 26 and 28 that are spaced apart from each other. These elastic members 24 to 28 are fixed in a state of being stretched at a predetermined stretch rate along their extending directions. In addition, in this exterior body 20, what is called a leg periphery elastic member which continues from the side seal part of the front side F to the side seal part of the rear side B along the leg periphery line 29 is not provided, but you may provide. (Not shown).

  The waist elastic member 24 is an elongated piece of thread rubber or the like arranged in the longitudinal direction in the vicinity of the waist opening edge within the range of the side seal portion 21 where the front side F and the rear side B are joined. This is an elastic member for attaching a diaper to the body by applying an expansion / contraction force so as to tighten around the torso of the body. For the waist elastic member 24, rubber thread is used in the illustrated example. However, for example, a tape-like elastic member may be used. Moreover, although the waist part elastic member 24 of the illustration form is clamped between the nonwoven fabrics of the folding | returning part 20C of the back sheet 20B in a waist part, you may clamp between 20 A of pressing sheets, and the back sheet 20B.

  The waist lower part elastic member 25 is an elongated elastic member such as a rubber thread, which is disposed at intervals in the vertical direction over the range from the upper part to the lower part of the side seal part 21. This is to apply a stretching force in the width direction to the waist circumference portion of the side B, and to bring the diaper into close contact with the body. Note that the boundary between the waist elastic member 24 and the waist lower elastic member 25 is not necessarily clear. For example, among the elastic members arranged in the width direction in the longitudinal direction on the front side F and the rear side B, even if the number cannot be specified, several on the upper side function as waist elastic members, The remaining elastic member should just function as a waist lower part elastic member.

  On the rear side B, the back-side curved elastic member 26 arranged separately from the waist lower part elastic member 25 is an elongated elastic member such as rubber thread, and is arranged along a predetermined curve. There may be one dorsal curved elastic member 26, but it is preferable that there are a plurality of dorsal curved elastic members 26. In the illustrated example, the elastic elastic members 26 are elongated elastic members such as four rubber threads. They are arranged at intervals without crossing. The dorsal curved elastic member group 26 is arranged with three or more, preferably four or more, spaced apart so as to form a predetermined expansion / contraction zone.

  On the front side F of the exterior body 20, the abdomen curved elastic member 28 disposed separately from the waist lower elastic member group 25 is an elongated elastic member such as rubber thread, and is arranged along a predetermined curve. . There may be one ventral curved elastic member 28, but it is preferable that there are a plurality of ventral curved elastic members 28. In the illustrated example, there are four thread-like elastic members, and these ventral curved elastic members 28 do not cross each other. , Spaced apart. Three or more, preferably four or more of the ventral curved elastic member groups 28 are also arranged at intervals so as to form a predetermined expansion / contraction zone.

  Unlike the illustrated example, the curved elastic members 26 and 28 may be provided only on one of the front side F and the rear side B. Further, when the curved elastic members 26 and 28 are provided on both the front side F and the rear side B, the curved elastic members 26 and 28 are arranged on the rear side B side with a part or all of the group of the curved elastic members 28 arranged on the front side F side. Although a form (not shown) in which a part or all of the group of the curved elastic members 26 intersect can be adopted, the group of the curved elastic members 28 arranged on the front side F and the rear side B as shown in the illustrated example. A configuration in which the group of the curved elastic members 26 arranged on the side is separated from each other in the longitudinal direction at a position slightly deviated from the front-rear intermediate portion, particularly the front side F, without crossing each other is preferable.

  Further, the curved elastic members 26 and 28 do not have to be entirely curved, and may partially have a linear portion.

(Front / rear presser sheet)
As shown in FIG. 2, in order to cover the front and rear end portions of the interior body 10 attached on the inner surface of the exterior body 20 and to prevent leakage from the front and rear edges of the interior body 10, the front and rear presser sheets 50 and 60 are provided. Is provided. The illustrated embodiment will be described in more detail. The front presser sheet 50 extends across the entire width direction from the inner surface of the folded portion 20C at the waist side end of the front F inner surface to a position overlapping the front end of the interior body 10. The rear presser sheet 60 extends over the entire width direction from the inner surface of the folded portion 20 </ b> C at the waist side end portion of the rear B inner surface to a position overlapping the rear end portion of the interior body 10. If a slight non-adhesive portion is provided in the crotch side edges of the front and rear presser sheets 50, 60 over the entire width direction (or only the central portion), not only the adhesive does not stick out, but also this portion is removed from the surface sheet. It can be lifted slightly to function as a leak-proof wall.

  When the front and rear presser sheets 50 and 60 are attached as shown in the figure, there is an advantage that the degree of freedom of material selection is increased, but there are also disadvantages such as an increase in materials and manufacturing processes. Therefore, the folded portion 20C formed by folding the exterior body 20 on the inner surface of the diaper can be extended to a portion overlapping the interior body 10 to form a portion equivalent to the presser sheets 50 and 60 described above.

  As described above, when the fit elastic members 25, 26, and 28 are provided on the exterior body 20 of the pants-type disposable diaper, at least the intermediate portion in the width direction of the region overlapping the interior body 10 is finely cut, and the interior body 10 is unnecessary. It is preferable to prevent shrinkage.

<Mode of contraction means>
Next, the aspect of the contraction means according to the present invention will be described with reference to the drawings after FIG.
Moreover, in drawings after FIG. 6, illustration of structural members, such as an elastic member, is abbreviate | omitted and it has refused beforehand that it has illustrated simply.

  In FIG. 1, the front and rear are divided into the front side F and the rear side B, but the middle part in the front and rear direction can be divided into the crotch part G, the front side can be divided into the ventral part, and the rear side can be divided into the back part. Moreover, the area | region between the front and rear side seal parts 21 and 21 can also be called a crotch part. In the present invention, it does not make much sense to define and classify these accurately.

In the embodiment, the absorber 13 of FIG. 1 is shown in FIGS. 5 to 8 alone except for other members.
The illustrated absorber 13 has a so-called substantially hourglass shape as an outer shape, that is, the front-rear direction intermediate portion 13M is formed narrower, and the front end portion side 13F and the rear end portion side 13B are located to the left and right of the width of the intermediate portion 13M. It has a wide part formed widely.

  In the aspect of the present invention, as shown in FIG. 5, in the wide portions 13F and 13B, the widening portions XF and XB that extend to the left and right from the width of the intermediate portion 13M are described below. Contraction means is provided to reduce the width dimension when receiving

When packaging, for example, a pants-type disposable diaper has a wide part 13F, 13B folded at the center in the width direction at each base (for example, the one-dot chain line position in FIG. 5), then folded in the front-rear direction, and the product is acceptable. Housed in a flexible package.
Specifically, for example, after the product is folded in front and rear as shown in FIG. 9 and sealed with the side seal portion 21 in a flat manner (see FIG. 10A), the widened portion XF in the wide portions 13F and 13B is expanded. , XB is folded toward the center in the width direction with the outer edge positions H1 and H2 as boundaries (see FIG. 10B). At this time, the outer edge positions of the widened portions XF and XB are greatly displaced toward the center in the width direction with respect to the outer edge position of the narrow intermediate portion 13M in the front-rear direction, as shown in FIG. By the contraction by the means, the width is reduced from W to Wa, and the amount of deviation between the width 13m of the intermediate portion and the width between the outer edges of the widened portion Xf and the width between the outer edges of the widened portion Xb is reduced. And when packaged, the outer shape is almost a rectangular parallelepiped, which is satisfactory as a packaging form.
In the final stage of folding, it is desirable to fold the end in the front-rear direction at the folding position H3 as shown in FIG. 10 (c) after the stage of FIG. 10 (b). Thereafter, a plurality of folded products are inserted into a flexible gusset packaging bag (not shown) such as polyethylene and sealed by heat sealing or the like.

  Since the absorbent body 13 according to the present invention has a wide portion, a necessary amount of absorption can be ensured without impairing the fit at the crotch portion.

The contracting means of the present invention is a means for reducing the width direction dimension when the widened portions XF and XB receive a force toward the center in the width direction.
There are various forms of such contraction means. As a first example, as shown in FIG. 6, in addition to the longitudinal slit 13S formed in the widened portions XF and XB, the longitudinal direction embossing (not shown) can be used. Can be formed.
Although the slit 13S can be formed as appropriate, a single slit 13S can be formed in the widened portions XF and XB, or a plurality of slits 13S can be formed in the front-rear direction. A plurality of them may be formed in the width direction.

  On the other hand, as a contraction means, as shown in FIG. 7, it can also be configured by forming a lower basis weight portion 13P in the widened portions XF, XB than the intermediate basis weight portion of the wide portion. As shown in the figure, it is desirable that the change in the basis weight is made lower toward the outside. It is desirable that the change in the basis weight is linear as shown in the figure, and practically, it is lowered stepwise in the stepwise direction.

It has been described that the contracting means of the present invention is a means for reducing the widthwise dimension when the widened portions XF and XB receive a force toward the center in the widthwise direction.
In this case, as the “external force that applies a force toward the center in the width direction”, the contraction force of the elastic members 24 to 28 described above can be used.
Further, it may be a force for pressing from the outer side of the absorbent body to the center in the width direction in the manufacturing process of the absorbent body or the stage of gusset packaging.

  The folding positions H1 and H2 or the folding position H3 described above may coincide with the outer edge of the absorber 13 as shown in the example, or may be outside the outer edge.

  The present invention can be used in a disposable diaper such as a pad type in addition to a pants-type disposable diaper as in the above example.

  B ... Back body, F ... Front body, 10 ... Interior body, 11 ... Liquid permeable top sheet, 12 ... Liquid impervious back side sheet, 13 ... Absorber, 13M ... Middle part, 13F ... Front end part, 13B ... rear end side, 13S ... front-rear direction slit, 13P ... low-weighted part, 14 ... packaging sheet, 15 ... gathered nonwoven fabric, 16 ... gathered elastic member, 20 ... exterior body, 20C ... folded part, 21 ... side seal part, 24: waist elastic member, 25: waist lower elastic member, 26: dorsal curved elastic member, 28: ventral curved elastic member, XF, XB ... widened portion, Xf, Xb ... widened portion, H1, H2, H3 ... folding position.

Claims (8)

In a disposable diaper provided with an absorbent body extending to the ventral part and the dorsal part via the crotch part,
The absorbent body has a front-rear direction intermediate portion formed with a narrow width, and the front end portion side and the rear end portion side have a wide portion formed wider on the left and right than the width of the intermediate portion,
In the widened portion, a contracting means for reducing the size in the width direction is provided in the widened portion that extends to the left and right from the width of the intermediate portion when receiving a force toward the center in the width direction.
A disposable diaper characterized by that.   The disposable diaper according to claim 1, wherein the contraction means is a front-rear direction slit or front-rear direction emboss formed in the widened portion.   The disposable diaper according to claim 1, wherein the contraction means is a low basis weight portion formed in the widened portion from a middle basis weight of the wide portion. The absorbent sheet is provided with an absorbent body extending through the crotch portion to the abdominal portion and the dorsal portion, and at least an end portion in the front-rear direction is longer in the front-rear direction than the absorbent body and wider than the width of the absorbent body. A pants-type disposable diaper in which a body is disposed and a waist opening and a pair of left and right leg openings are formed by joining both side edges on the ventral side and both side edges on the back side of the exterior sheet. And
The absorbent body has a front-rear direction intermediate portion formed with a narrow width, and the front end portion side and the rear end portion side have a wide portion formed wider on the left and right than the width of the intermediate portion,
In the widened portion, a contracting means for reducing the size in the width direction is provided in the widened portion that extends to the left and right from the width of the intermediate portion when receiving a force toward the center in the width direction.
A disposable diaper characterized by that.   The disposable diaper according to claim 4, wherein the disposable diaper is folded in the front-rear direction, and the wide portion is folded in the center in the width direction at each base, and the product is stored in a flexible package. .   The disposable according to claim 4 or 5, wherein an elastic member extends in the left-right direction and is fixed in an extended state to the ventral portion and the back portion, and the contraction force of the elastic member is a force toward the center in the width direction. Diapers.   The disposable diaper according to claim 6, wherein the contraction means is a front-rear direction slit or front-rear direction emboss formed in the widened portion.   The disposable diaper according to claim 6, wherein the contraction means is a low basis weight portion formed in the widened portion from an intermediate basis weight of the wide portion.

Images