JP6842871B2 - Disposable diapers - Google Patents

Description

The present invention relates to disposable diapers with improved walkability.

The disposable diaper includes an exterior sheet having a front body and a back body, an interior body including an absorber fixed to the inner surface of the exterior sheet, and a surface sheet that comes into contact with the skin. The disposable diaper includes a pants-type disposable diaper in which a waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of the exterior sheet on both sides, and the back of the exterior sheet. There is known a tape-type disposable diaper that is worn on the wearer by fastening fastening tapes provided on both sides of the side to the ventral surface of the disposable diaper. The present invention is applicable to both the pants-type disposable diaper and the tape-type disposable diaper.

FIG. 6 shows a state in which a conventional disposable diaper is worn. The foot circumference 29 of the disposable diaper is provided with a foot circumference elastic elastic member 28 for giving elasticity in the width direction mainly to a portion along the foot opening. Specifically, it extends from the connecting side portion 21 connecting the front body F and the rear body B to a position overlapping both sides of the absorber 13 while curving toward the opposite body side toward the center in the width direction. ing. A plurality of elastic elastic members 28 around the legs are arranged at intervals in the front-rear direction without intersecting each other.

In addition, some disposable diapers have elastic elastic members arranged in a form different from the above, and disposable diapers such as the following Patent Documents 1 and 2 are disclosed.

Patent No. 5058271 JP 2015-165852

When the disposable diaper is worn, the elastic elastic member 28 around the foot contracts in the width direction along the foot circumference 29, so that the wearer's skin surface and the disposable diaper are in close contact with each other, and urine leakage can be prevented. However, when the wearer moves his / her legs for walking, the contraction direction of the elastic elastic member 28 and the direction in which the wearer's legs move (the front-back direction of the disposable diaper) are different, and these two directions are close to right angles. Cross at an angle. Therefore, there is a problem that the elastic elastic member 28 prevents the wearer from raising his / her foot when walking. Further, since the elastic elastic member 28 tightens the base portion of the wearer's foot by its contraction, the movement of the base of the foot becomes inconvenient, and there is a problem that it is difficult for the wearer to raise the foot from this viewpoint as well.

Therefore, a main object of the present invention is to provide a disposable diaper that is easy to walk.

<Invention according to claim 1>
It is provided with an exterior sheet having a front body and a back body, and an absorber provided inside the exterior sheet so as to extend from the front body to the back body.
In disposable diapers with a waist opening and a pair of left and right foot openings
An elastic elastic member in the anterior-posterior direction fixed in an extended state is provided on the outer side of the front body in the width direction from the foot opening toward the waist opening.
Due to the contraction of the elastic elastic member in the front-rear direction, the foot opening is lifted toward the waist opening side.
The elastic elastic member in the front-rear direction extends toward the waist opening side from the waist opening side end of the absorber and does not intersect with the absorber.
An elastic elastic member around the waist, which is fixed in an extended state along the width direction of the front body, is provided at the lower part of the waist below the waist opening.
Due to the contraction of the elastic elastic member around the waist, the disposable diaper is brought into close contact with the wearer's lower abdomen.
The anteroposterior elastic elastic member extends from the foot opening to at least a position intersecting the waist elastic elastic elastic member.
A disposable diaper characterized in that the elastic elastic member around the waist is cut at the intersecting portion.

(Action effect)
When the foot opening is lifted toward the waist opening side due to the contraction of the elastic elastic member in the front-rear direction, the area of the front side portion of the wearer's foot that is not covered by the disposable diaper increases. As a result, the front body of the disposable diaper becomes an obstacle and it is difficult for the wearer to raise his / her legs, which makes walking easier. In particular, even when the elastic member around the foot of the disposable diaper is arranged, the elastic member around the foot is pulled upward as the elastic elastic member in the front-rear direction contracts. The tightening of the base of the foot becomes loose, the base of the foot is easy to move, and walking becomes easy.

Further, since the elastic elastic member in the front-rear direction extends further toward the waist opening side than the waist opening side end portion of the absorber, the waist opening portion of the absorber when the elastic elastic member in the front-rear direction contracts. The side edge bulges outward. In this way, the waist opening side end of the absorber is separated from the skin surface, which makes it easier for the male to store the genital organs in the absorbent body surface.

Further, by extending the elastic elastic member in the front-rear direction further toward the waist opening side than the waist opening side end portion of the absorber, the elastic elastic elastic member in the front-rear direction does not extend to the waist opening side end portion of the absorber. Since the total length of the elastic elastic member in the front-rear direction is longer than in the case, the effect of lifting the foot opening toward the waist opening side is enhanced, and the foot can be easily raised and walking becomes easy.

Further, when a part of the anteroposterior elastic elastic member intersects with the absorber, the portion overlapping with the absorber is usually cut, so that the portion where the anteroposterior elastic elastic member contracts is the anteroposterior elastic elastic member. Of the total length of the body, it extends from the foot opening to the intersection with the absorber. On the other hand, when a part of the anteroposterior elastic elastic member does not intersect with the absorber, the portion where the anteroposterior elastic elastic member contracts is the entire length of the anteroposterior elastic elastic member. As described above, by not intersecting a part of the elastic elastic member in the front-rear direction with the absorber, waste of the elastic elastic member in the anteroposterior direction can be eliminated. At the same time, it is possible to save the trouble of cutting the portion overlapping with the absorber.

The term "absorbent" does not include a packaging sheet. That is, the elastic elastic member in the front-rear direction does not have to overlap with the absorber, and the elastic elastic member in the front-rear direction may be formed so as to overlap the packaging sheet.

In addition, it is necessary that the elastic elastic members on the left and right sides of the front body of the disposable diaper do not overlap with the absorber. That is, the elastic elastic member in the front-rear direction on either the left side or the right side of the front body of the disposable diaper may overlap the absorber. This is because even if such a form is adopted, the effect that waste of the elastic elastic member in the front-rear direction can be eliminated can be obtained.

(Delete)

If the elastic elastic member around the waist is not cut at the intersection of the elastic elastic member in the front-rear direction and the elastic elastic member around the waist, the exterior sheet contracts in the width direction and the front-rear direction of the disposable diaper. Increases rigidity and causes stiffness. If there is such a hard part on the front body, there is a problem that it is harder to raise the legs than when it is soft. Therefore, in the present invention, by cutting the elastic elastic member around the waist at the intersection, the intersection is softened, the legs can be easily raised, and walking is facilitated. This cutting can be realized, for example, by performing a shirring cut at the time of manufacturing.

Further, when the elastic elastic member around the waist at the intersection is not cut, the contraction direction of the elastic elastic member in the front-rear direction is distorted due to the contraction of the elastic elastic member around the waist. When such distortion occurs, there is a problem that the effect of lifting the foot opening toward the waist opening side becomes weaker than in the case where no distortion occurs. Therefore, in the present invention, by cutting the elastic elastic member around the waist at the intersection, the occurrence of such distortion is suppressed and the effect of lifting the foot opening toward the waist opening side is enhanced. It is easy to raise and walk.

As described above, according to the present invention, it is possible to provide a disposable diaper that is easy to walk.

It is a developed view (partially broken view) of the disposable diaper according to the present invention seen from the skin surface side. It is a developed view which looked at the disposable diaper which concerns on this invention from the back side. It is an arrow view which showed the AA cross section of the disposable diaper which concerns on this invention. It is an enlarged view of the right side part (when seen from the wearer) of the front body of FIG. It is a perspective view which wore the disposable diaper which concerns on this invention. It is a perspective view which wore a conventional disposable diaper.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The term "elongation rate" means a value when the natural length is 100%.

1 and 2 show the pants-type disposable diaper 1 according to the present invention. The disposable diaper 1 (hereinafter, also simply referred to as a product) includes an exterior sheet 20 having a front body F and a back body B, an interior body 10 fixed and integrated to the inner surface of the exterior sheet 20, and an interior body 10. Has a surface sheet 11 fixed to the surface of the. The interior body 10 is provided with a liquid-impermeable back surface side sheet 12 on the back surface side and an absorber 13 on the skin surface side.

(Exterior sheet)
The exterior sheet 20 has a waist circumference T defined as a vertical range having a side seal portion 21 (a vertical range from the waist opening to the upper end of the foot opening) and a front-rear range of the portion forming the foot opening (front body F). It has a foot opening L that is determined (between the vertical region having the side seal portion 21 of the rear body B and the vertical region having the side seal portion 21 of the back body B). The waist circumference T can be divided into a waist portion W conceptually forming an edge portion of the waist opening and a waist lower portion U which is a portion below the waist portion W. Normally, when there is a boundary in the waist circumference T where the stretching stress in the width direction changes (for example, the thickness and elongation rate of the elastic stretching member change), the waist opening side becomes the waist portion W rather than the boundary on the waist opening side most. If there is no such boundary, the waist opening side is the waist portion W rather than the absorber 13 or the interior body 10. The planar shape of the exterior sheet 20 has a pseudo-hourglass shape as a whole due to the concave foot circumference lines 29 formed to form foot openings on both sides of the middle. In addition, the exterior sheet 20 may not exist in the foot opening L but may exist only in the waist circumference T.

The exterior sheet 20 can be a non-woven fabric sheet having a two-layer structure composed of an upper non-woven fabric 20A and a lower non-woven fabric 20B. Various elastic elastic members are arranged between the upper non-woven fabric 20A and the lower non-woven fabric 20B and between the non-woven fabric of the folded portion 20C formed by folding the lower non-woven fabric 20B inward at the waist opening edge to impart elasticity.

(Elastic elastic member)
The elastic portions of the exterior sheet 20 are a plurality of elastic portions 24 arranged in the vicinity of the waist opening, and a plurality of elastic portions arranged along the width direction at intervals in the vertical direction on the front body F and the rear body B. It has an elastic elastic member 25 around the waist and an elastic member 27 for the foot opening arranged in the foot opening L, and separately, in the front body F and the back body B, the front body F and the back body B, respectively. From the connecting side portions 21 and 22 that connect the two parts to the center of the width direction, while curving toward the opposite body side, to the part that overlaps with both sides of the interior body 10 (or to the vicinity of both sides, etc.) It is provided with a plurality of curved elastic elastic members 26, 28 that are extended (not necessarily required) and are arranged at intervals without intersecting each other. These elastic members 24 to 28 are fixed in a state of being stretched at a predetermined elongation rate along the extending direction thereof. Further, each elastic elastic member is usually arranged between the upper layer non-woven fabric 20A and the lower layer non-woven fabric 20B of the exterior sheet 20 and bonded to one of the non-woven fabrics 20A and 20B. The exterior sheet 20 is not provided with a so-called foot circumference elastic member that is continuous from the side seal portion of the front body F to the side seal portion of the rear body B along the foot circumference line 29.

The waist elastic member 24 is for tightening the wearer's waist with elasticity, and in the illustrated example, an elongated elastic member such as a rubber thread attached between layers of the waist portion W in an elongated state along the width direction. It is said that a plurality of rubber strips are provided at intervals in the vertical direction. Although thread rubber is used for the waist elastic member 24 in the illustrated example, for example, a tape-shaped elastic member may be used. Further, although the waist elastic member 24 of the illustrated embodiment is sandwiched between the non-woven fabrics of the folded portion 20C of the back sheet 20B at the waist, it may be sandwiched between the pressing sheet 20A and the back sheet 20B. It is desirable that the waist elastic member 24 is provided in the entire width direction of the waist W.

The elastic elastic member 25 around the waist is for elastically adhering the diaper to the lower abdomen and buttocks of the wearer, and in the illustrated example, the diaper is attached between the layers in the lower waist portion U in an elongated state along the width direction. It is an elongated elastic elastic member such as a rubber thread, and a plurality of members are provided at intervals in the vertical direction. It is desirable that the elastic elastic member 25 around the waist is provided at least on both sides in the width direction of the middle portion in the width direction of the absorber 13 in the lower waist portion U, and the side edges are provided up to the side seal portion 21.

The leg opening elastic member 27 is mainly for imparting elasticity in the width direction to a portion along the leg opening, and in the illustrated example, it is attached between layers in the leg opening L in an extended state along the width direction. It is an elongated elastic member such as a plurality of rubber threads, and a plurality of elastic members are provided at intervals in the vertical direction. It is desirable that the foot opening elastic members 27 are provided at least on both sides of the foot opening L at least on both sides of the width direction intermediate portion of the absorber 13 in the width direction, and the side edges are provided up to the foot opening edge 29.

In the range from the waist circumference T to the leg opening L in the exterior body 20, apart from the waist elastic member 24, the waist elastic member 25, and the leg opening elastic member 27, an elongated elastic member such as rubber thread is formed. The curved elastic members 26 and 28 are arranged along a predetermined curve. The curved elastic member 26 may be one, but is preferably a plurality of members. In the illustrated example, the curved elastic member 26 is an elongated elastic member such as four rubber threads, and the curved elastic members 26 and 28 intersect with each other. They are arranged at intervals without any problem. The curved elastic members 26 and 28 are arranged with a few elastic members closely spaced and substantially as a bundle, and are 3 to 20 mm, preferably 6 so as to form a predetermined expansion / contraction zone. Three or more, preferably four or more, are arranged at intervals of about 16 mm.

The elongation rate when the elastic members 24 to 28 are attached can be appropriately determined, but in the case of a normal adult, the waist elastic member 24 is about 160 to 320%, the waist lower elastic member 25 and the leg opening elastic member. 27 can be about 160 to 320%, and the curved elastic members 26 and 28 can be about 230 to 320%.

(Interior body)
The interior body 10 has a structure provided with a liquid-impermeable back surface sheet 12 made of polyethylene or the like provided on the back surface side and an absorber 13 on the skin surface side of the liquid impermeable back surface sheet 12. It absorbs and retains excrement.

A liquid-impermeable plastic sheet such as polyethylene or polypropylene is used for the liquid-impermeable back-side sheet 12 that covers the back surface side (non-skin surface side) of the absorber 13, but in recent years, it has been made moisture-permeable from the viewpoint of preventing stuffiness. Those having are preferably used. This water-impervious / moisture-permeable sheet is a microporous sheet obtained by melt-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. is there.

The absorber 13 is basically a known material, for example, a stack of pulp fibers, an aggregate of filaments such as cellulose acetate, or a non-woven fabric, and is formed by mixing and fixing a highly absorbent polymer as necessary. Is used, and in the illustrated example, one molded with a planar shape as a substantially rectangular shape is used, and the width dimension thereof is a dimensional width that does not give the wearer a feeling of stiffness due to contact with the crotch portion. The absorber 13 can be wrapped with a wrapping sheet 14 having liquid permeability and liquid retention, such as crepe paper, if necessary, in order to retain the shape and polymer. The shape of the absorber 13 may be a rectangular shape, or an hourglass shape (constricted shape) in which the width of the crotch portion is narrower than that of the dorsal side and the ventral side.

(Surface sheet)
As the surface sheet 11 that covers the surface side (skin surface side) of the absorber 13, a perforated or non-perforated non-woven fabric, a porous plastic sheet, or the like is preferably used. The material fibers constituting the non-woven fabric can be olefin-based fibers such as polyethylene or polypropylene, synthetic fibers such as polyester-based and polyamide-based, recycled fibers such as rayon and cupra, and natural fibers such as cotton. , A non-woven 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 that it is rich in flexibility and drapeability, and the thermal bond method is excellent in that it is bulky and soft. When a large number of through holes are formed in the surface sheet 11, urine or the like is quickly absorbed, and the dry touch property is excellent. The liquid-permeable surface sheet 11 wraps around the side edge portion of the absorber 13 and extends to the back surface side of the absorber 13.

(Three-dimensional gather)
It is preferable that three-dimensional gather BSs that fit around the legs are formed on both sides of the interior body 10. The three-dimensional gather BS is formed by fixing the elastic elastic member 16 in an extended state to the inner side portion of the three-dimensional gather sheet 15. Then, the elastic elastic member 16 contracts in the used state, so that the inner side portion of the three-dimensional gather BS stands up.

As the gathered non-woven fabric, a non-woven fabric which is made into a double sheet by folding back is preferably used, and the side edge portion of the absorber 13 is further rolled up from the upper side thereof and extended to the back surface side of the absorber 13 and adhered. More specifically, the three-dimensional gather sheet 15 leaves a three-dimensional gather BS forming portion in the longitudinal intermediate portion of the disposable diaper 1, and the range extending from the widthwise intermediate portion to the back surface side of the absorber 13 is a hot melt adhesive or the like. At the front and rear ends in the longitudinal direction, the section from the middle portion in the width direction to the one-side end edge is adhered in a range extending to the back surface side of the absorber 13, and the portion forming the three-dimensional gather BS is bonded to the absorber. It is adhered with a hot melt adhesive or the like while being folded at the upper surface of 13.

Inside the three-dimensional gather sheet 15 formed of the double-sheet non-woven fabric, a plurality of three-dimensional gather elastic elastic members 16 are arranged on the upright tip side portion. The three-dimensional gather elastic elastic member 16 is for forming a three-dimensional gather BS by erecting a non-woven fabric portion protruding from the side edge portion of the absorber 13 by elastic elastic force in the product state.

The liquid-impermeable back surface side sheet 12 penetrates into the inside of the double sheet-shaped three-dimensional gather sheet 15 and forms a leak-proof wall on the lower end side of the three-dimensional gather BS. As the liquid-impermeable back surface sheet 12, it is desirable to use an opaque sheet so that brown color such as defecation and urine does not appear. As the opacity, a plastic in which pigments such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc, and barium sulfate and a filler are added and formed into a film is preferably used.

As the elastic elastic member 16, commonly used materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, and polyester can be used. Further, in order to make it difficult to see from the outside, it is preferable to dispose of the thickness at 925 dtex or less, the elongation rate at 150 to 350%, and the interval at 10.0 mm or less. The elongation rate is a value calculated by the length at the time of extension / natural length × 100, and a tape-shaped elastic elastic member having a certain width may be used instead of the filamentous elastic elastic member.

Similar to the front-rear leakage prevention sheet 2, the material fibers constituting the above-mentioned three-dimensional gather sheet 15 are synthetic fibers such as olefin-based, polyester-based, and amide-based fibers such as polyethylene and polypropylene, recycled fibers such as rayon and cupra, and cotton. The non-woven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used, but in particular, in order to prevent stuffiness. It is preferable to use a non-woven fabric that suppresses the basis weight and has excellent breathability. Further, regarding the three-dimensional gather sheet 15, in order to prevent the permeation of urine and the like, prevent fogging, and enhance the feel (dry feeling) to the skin, a silicon-based, paraffin metal-based, and alkylchromic clody-based water repellent. It is desirable to use a water-repellent treated non-woven fabric coated with.

(Resilient elastic member 3 in the front-rear direction)
In the present invention, the front-rear elastic elastic member 3 is arranged on the front body F of the disposable diaper 1 in order to facilitate walking. The anteroposterior elastic elastic member 3 is arranged so as to extend from the foot opening to the waist opening.

In the illustrated form, the starting point of the elastic elastic member 3 in the front-rear direction is provided in the intermediate portion between the widthwise end portion of the absorber 13 and the side seal portion 21 in the foot circumference line 29. It is not preferable that the position of this starting point is too close to the absorber 13 or too close to the side seal 21. Of the wearer's feet (meaning one foot here) for the purpose of increasing the area of the front part of the wearer's feet that is not covered by the disposable diaper and making it easier to raise the wearer's feet. , Because it is most effective to lift the central part. Therefore, it is preferable to provide the space between the widthwise end portion of the absorber 13 and the side seal portion 21 in the middle 1/3 range when the absorber 13 is divided into three in the width direction, and the widthwise end portion and the side seal portion of the absorber 13 are provided. It is more preferable to provide the space between 21 in the middle when the space is divided into two in the width direction. Further, the starting point of the elastic elastic member 3 in the front-rear direction may be the foot opening, and does not necessarily have to be the lower end of the disposable diaper. That is, the starting point may be a position slightly on the waist side of the lower end of the disposable diaper 1.

Next, regarding the extending direction of the elastic elastic member 3 in the front-rear direction, it is preferable that the elastic elastic member 3 is directed inward in the width direction. This is because when the wearer raises his / her foot for walking, it is generally raised inward in the width direction. Specifically, a reference line H is provided in a direction perpendicular to the front-rear direction of the disposable diaper 1 so as to pass through the starting point G of the elastic elastic member 3 in the front-rear direction, and the inner portion of the reference line H in the width direction is 0 degrees. It is preferable that the angle I between the reference line H and the elastic elastic member 3 in the front-rear direction falls within the range of about 65 degrees to 85 degrees. However, the present invention is not limited to such a form, and although it is not the best form, the elastic elastic member 3 in the front-rear direction may be extended in a direction perpendicular to the width direction (extended in the front-rear direction). , It can also be extended outward in the width direction.

In the illustrated form, the elastic elastic member 3 in the front-rear direction extends to a position where it intersects with the elastic elastic member 25 around the waist. Specifically, among the plurality of elastic elastic member 25 around the waist, the elastic elastic member 25 around the waist extends to the elastic elastic member 25 located on the waist side. By extending the elastic elastic member 3 in the anteroposterior direction to near the waist side in this way, the distance in the anteroposterior direction of the elastic elastic member 3 in the anteroposterior direction becomes longer, and the foot opening is lifted more strongly toward the waist opening side. be able to.

It is preferable that the elastic elastic member 3 in the front-rear direction is provided on both the left side and the right side of the front body F. Then, after the anteroposterior elastic elastic member 3 extends from the foot opening toward the waist opening side, it is located on the waist opening side with the anteroposterior elastic elastic member 3 located on the left side of the front body F and on the right side. In order to connect the elastic elastic members 3 in the front-rear direction, it is preferable to extend the elastic elastic members 3 in the front-rear direction inward in the width direction. In this way, by making the front-rear elastic elastic member 3 like a single line that moves from the left side of the front body F through the center to the right side, it is easy to provide the anteroposterior elastic elastic member 3 at the time of manufacturing. Become. When the anteroposterior elastic elastic member 3 is arranged in this way, for example, the foot opening located on the left side of the front body F is the starting point of the anteroposterior elastic elastic member 3, and the foot opening located on the right side is the anteroposterior elastic expansion and contraction member 3. It can be the end point of the member 3. The terms of the start point and the end point are used for convenience in explaining the arrangement position of the elastic elastic member 3 in the front-rear direction, and are manufactured according to this term when the elastic elastic member 3 in the front-rear direction is manufactured. It does not mean that.

As described above, by arranging the anteroposterior elastic elastic member 3 so as to surround the periphery of the absorber 13 of the front body (above, left, right side of the absorber 13), the anteroposterior elastic elastic member 3 When the body contracts, the waist side portion of the absorber 13 (the upper part of the absorber 13) swells away from the skin surface, which has an advantage that the male genital organs can be easily stored. This effect also occurs when the elastic elastic member 3 in the front-rear direction is arranged only on the left side and the right side of the absorber 13, but when it is also arranged above the absorber 13, it swells more remarkably, so that the effect is obtained. Will be higher.

Further, it is preferable that a plurality of elastic elastic members 3 in the front-rear direction are provided at predetermined intervals in the front-rear direction. Specifically, it is preferable to leave an interval of about 1 mm to 10 mm. By providing a plurality of legs, the foot opening can be lifted more strongly toward the waist opening side. At this time, it is preferable that the elastic elastic members 3 in the front-rear direction are provided in parallel so as not to intersect each other. That is, among the plurality of elastic stretchable members 3 in the front-rear direction, the elastic stretchable member 3 in the front-rear direction whose starting point is located outside the width direction of the waist opening extends longer toward the waist opening side. On the contrary, the elastic elastic member 3 in the front-rear direction whose starting point is located inside the width direction of the waist opening extends shorter toward the waist opening side.

As the material of the anteroposterior elastic elastic member 3, commonly used materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon and polyester can be used. it can. Further, the elongation rate at the time of attaching the elastic elastic member 3 in the front-rear direction can be appropriately determined, but in the case of a normal adult, it can be about 160 to 320%.

At the intersection of the elastic elastic member 25 around the waist and the elastic elastic member 3 in the front-rear direction, it is preferable that the elastic elastic member 25 around the waist is cut at the intersection. In the illustrated form, the elastic elastic member 3 in the front-rear direction extends in the front-rear direction (forward direction in the case of the front body) from the foot opening toward the waist opening side, and the extending portion in the front-rear direction is It intersects with the elastic elastic member 25 around the waist, and the elastic elastic member 25 around the waist is cut at this intersection. All of this intersection may be cut, but only a part of it may be cut. Specifically, it is preferable to cut at least half of the intersection, and it is preferable to cut at least two-thirds of the intersection. Further, in order to enhance the effect of lifting the foot opening, it is preferable to cut the side closer to the foot opening than the waist opening side among the plurality of intersecting portions. The term "cutting the elastic elastic member 25 around the waist" includes a form (a form in which a shirring cut is performed) in which the elastic elastic member 25 around the waist is fixed to the exterior sheet in an extended state and then the intersecting portion is cut at the time of manufacture. Of course, it also includes a form in which the elastic elastic member 25 around the waist, which has been cut short in advance, is fixed to the exterior sheet so as not to intersect with the elastic elastic member 3 in the front-rear direction.

In the above description, the intersection of the elastic elastic member 25 around the waist and the elastic elastic member 3 in the front-rear direction has been described, but the elastic elastic member 3 in the anteroposterior direction includes the elastic member 27 at the foot opening and the curved elastic member 26. , 28 also intersects. Therefore, it is desirable to cut the foot opening elastic member 27 and the curved elastic members 26 and 28 in the same manner at the intersection. As a result, the foot opening can be lifted toward the waist opening side.

In the above description, the case where the elastic elastic member 3 in the front-rear direction is provided on the front body F has been described, but the back body B may be provided in the same form as the front body F. By providing it on the back body B, the elastic member around the foot of the back body B is lifted toward the waist opening side, so that the elastic member around the foot loosens the tightening of the base of the foot, the base of the foot is easy to move, and walking. Becomes easier.

Further, in the conventional disposable diaper, the weight of the absorber 13 increases when urinating, and the diaper tends to slip down. Therefore, a gap is formed between the foot portion of the disposable diaper and the skin surface of the wearer, and urine leaks easily from the gap. Therefore, by contracting the elastic elastic member 3 in the front-rear direction and lifting the foot opening toward the waist opening as in the present invention, it is possible to prevent the occurrence of such a gap and suppress the occurrence of urine leakage.

In addition, when wearing a conventional disposable diaper, the wearer's toes and the portion around the foot of the disposable diaper easily collide with each other, which makes it difficult to wear. Therefore, by contracting the elastic elastic member 3 in the front-rear direction and lifting the foot opening toward the waist opening side as in the present invention, the distance from the waist opening edge to the foot opening edge is shortened. It makes it easier to put on disposable diapers.

In the present invention, unlike Patent Document 2 of the prior art document, the anteroposterior elastic elastic member 3 extending from the waist opening side to the foot opening side is not provided. When the anteroposterior elastic elastic member 3 extending in the opposite direction is provided, the contraction force of the anteroposterior elastic elastic member 3 extending from the foot opening to the waist opening side of the present invention is canceled. Because.

Further, in the present invention, unlike Patent Document 2, the elastic elastic member 25 around the waist is not arranged so as to be inclined diagonally. That is, the elastic elastic member 25 around the waist extends linearly along the width direction between both ends of the front body F and the back body B in the width direction. Then, as a member different from the 25, a front-rear elastic elastic member 3 extending from the foot opening to the waist opening side of the absorber 13 from the waist opening side end is provided. If a large number of elastic elastic members around the waist 25 are provided so as to be inclined toward the waist end side or the foot opening side as in Patent Document 2, the method for manufacturing a disposable diaper becomes extremely complicated, and defective products are likely to occur. Therefore, in the present invention, the elastic elastic member 25 around the waist has a linear shape that is easy to manufacture, and a plurality of elastic elastic members 3 in the front-rear direction are provided to simplify the structure and facilitate the manufacture.

Further, a plurality of elastic elastic elastic members 25 around the waist are provided, and the elastic elastic members 25, 25 around the waist are arranged at predetermined intervals in the front-rear direction, and they are arranged without intersecting each other. When a plurality of elastic elastic members 25 and 25 around the waist are formed into a mesh shape that intersects in a complicated manner as in Patent Document 2, the contractions of the elastic elastic members 25 around the waist interfere with each other and are in a direction different from the originally desired direction. There is a high possibility of contraction, and it becomes difficult to obtain the effect that was originally intended. In addition, the intersection is highly rigid and hard, so that the wearer is likely to feel uncomfortable. In the present invention, the occurrence of such inconvenience is prevented by not crossing the elastic elastic member 25 around the waist.

(Other)
In the illustrated form, the waist opening and the pair of left and right foot openings are formed by joining the both side edges of the front body exterior body and the both side edges of the rear body exterior body to form the side seal portion 21. Although the formed pants-type disposable diapers have been described, the present invention can also be used for tape-type disposable diapers. However, when the elastic elastic member 3 in the front-rear direction contracts, it becomes difficult to stop the tape, so a pants-type disposable diaper is more suitable.

1: Disposable diaper 2: Front and rear leakage prevention sheet 3: Front and rear leakage prevention sheet Elastic elastic member, 10: Interior body, 11: Front sheet, 12: Liquid permeable back side sheet, 13: Absorber, 14: Packaging Seat, 15: Three-dimensional gathered sheet, 16: Three-dimensional gathered elastic elastic member, 20: Exterior sheet, 21/22: Side joint edge, 24: Waist elastic elastic member, 25: Waist elastic elastic member, 26: Dorsal side Curved elastic elastic member, 27: Foot opening elastic member, 28: Ventral curved elastic elastic member, 29: Foot circumference line, F: Front body, B: Back body, BS: Three-dimensional gather, K: (Each elastic elastic member ) Cut part

Claims (1)

It is provided with an exterior sheet having a front body and a back body, and an absorber provided inside the exterior sheet so as to extend from the front body to the back body.
In disposable diapers with a waist opening and a pair of left and right foot openings
An elastic elastic member in the anterior-posterior direction fixed in an extended state is provided on the outer side of the front body in the width direction from the foot opening toward the waist opening.
Due to the contraction of the elastic elastic member in the front-rear direction, the foot opening is lifted toward the waist opening side.
The elastic elastic member in the front-rear direction extends toward the waist opening side from the waist opening side end of the absorber and does not intersect with the absorber.
An elastic elastic member around the waist, which is fixed in an extended state along the width direction of the front body, is provided at the lower part of the waist below the waist opening.
Due to the contraction of the elastic elastic member around the waist, the disposable diaper is brought into close contact with the wearer's lower abdomen.
The anteroposterior elastic elastic member extends from the foot opening to at least a position intersecting the waist elastic elastic elastic member.
A disposable diaper characterized in that the elastic elastic member around the waist is cut at the intersecting portion.

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