JPH09187477A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a diaper slightly slipping down by arranging stretchable elastic members consisting of a plurality of stretchable elastic materials arranged at a part of the circumference of a leg in such a way that the interval between the stretchable elastic members is gradually widened as approaching the side edge part of the diaper in a shape following the opening part around the leg, on the side part of the circumference of the waist. SOLUTION: The first stretchable elastic members 9 and 10 are provided on a back sheet where both side parts of the center in the longitudinal direction of an absorbing body 8 are positioned and the second and the third stretchable elastic members 13 and 14 are provided on the front body and the back body to provide stretchable elasticity in the neighborhood of the opening part 2 of the circumference of the leg of a pant-type disposable diaper. In this case, the second and the third stretchable elastic members 13 and 14 are respectively formed of at least two stretchable elastic materials and are arranged in such a way that the interval between these stretchable elastic materials is gradually widened from the neighborhood of the terminal end part on the front body side and the neighborhood of the terminal end part of the back body side to each of both side edge parts and the distance between the most separated stretchable elastic materials is made at least one half of the length of the side edge part even at the side edge part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper which is preliminarily formed in a pants type.

[0002]

2. Description of the Related Art Conventionally, as a diaper to be used, for example, in a side flap of a flat type diaper disclosed in Japanese Patent Laid-Open No. 57-77304, a part which comes into contact with the left and right flanks in advance is worn in advance. A so-called pants-type diaper has been devised, which is joined and fixed and provided with an opening around the waist and an opening around the legs. In addition, in such a pants-type disposable diaper, expansion and contraction elasticity is added to the openings around both legs, the opening around the waist, and both sides around the waist to enhance the followability and fit of the diaper to the wearer. It is described in Japanese Utility Model Application Laid-Open No. 3-16920, Japanese Patent Application Laid-Open No. 4-28363, Japanese Patent Application Laid-Open No. 4-166150 and Japanese Patent Application Laid-Open No. 4-289201. Such a pants-type disposable diaper can be attached and detached by a wearer, and there is an increasing demand for the period when infants leave the diaper or for adults such as incontinent persons.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In a pants-type disposable diaper as described in Japanese Patent Laid-Open No. 20 and Japanese Patent Application Laid-Open No. 4-28363, a stretchable elastic member is arranged in the openings around the waist and the openings around both legs. , These elastic elastic members squeeze the opening to fit the absorber to the wearer and to prevent the diaper from leaking through the opening, but the waist side does not have elastic elasticity. Therefore, the fit is incomplete,
There is a problem that the diaper may slip off if the weight of the diaper increases by absorbing urine or the like during wearing.

Further, in the case of a pants-type diaper as described in JP-A-4-166150 and JP-A-4-289201, expansion / contraction is performed around the waist or around the waist. The elastic member is placed to improve the fit, but by placing the stretchable elastic member around the waist, the number of elements that make up the diaper increases, and the number of steps increases, so the cost required for all used articles is reduced. In addition to being a hindrance to achieving the purpose of mass production, the elastic elastic member arranged in this way essentially has the effect of laterally tightening around the waist of the wearer. Since the diaper is perpendicular to the direction in which the diaper is about to slip, the tightening force must be increased to obtain the effect of suppressing the slip, and therefore the wearer is not required to do so. There is a problem that there is possible to give a sense of Sako.

The object of the present invention is to solve the above-mentioned problems and to have elasticity in the openings around the legs, and at the same time, to improve fitability at the waist side and prevent the diaper from falling off while wearing. The elastic elastic member that constitutes a part of the elastic elastic member of the leg opening is arranged so that the tightening force is exerted, and the elastic elastic member is arranged so that the absorber is always brought into close contact with the wearer while wearing. The purpose is to provide pants-type diapers.

[0006]

A pant-type disposable diaper according to the present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between these two sheets. It is formed by joining both side edges of the side flap extending from the front side part and the back side part, and has an opening around the waist and a pair of legs, and an elastic elastic member is arranged along the opening. In the pair of pants-type disposable diapers described above, the pair of leg openings are provided in the backsheet on both sides in the center in the longitudinal direction of the absorbent body located at the crotch portion of the pants-type disposable diaper. A first elastic elastic member, and a pair of second elastic elastic members arranged between the front body side terminal end portions of the pair of first elastic elastic members and between the front body side both side edge portions of the back seat. The pair of first elastic By arranging a pair of third elastic members arranged between the rear body side end portions of the back sheet from the vicinity of the rear body side end portions of the respective materials, the entire circumference of the both leg periphery opening portions is covered. Stretch elasticity is given,
The second stretchable elastic member and the third stretchable elastic member are each formed of at least two stretchable elastic materials, and the stretchable elastic materials are spaced apart from each other in the vicinity of the front body side end portion of the back seat and the back body. The distance between the stretchable elastic materials which are arranged so as to gradually spread from the vicinity of the side end portion to the respective side edge portions and which are most distant from each other at the side edge portion is half the length of the side edge portion. The diaper between the back sheet and the top sheet in the region where the absorbent body is one or more and between the both side edges of the side flaps of the front body and / or between the side edges of the side flaps of the back body. The present invention relates to a pants-type disposable diaper in which the fourth elastic member is arranged in the width direction.

Here, the second elastic member and / or the third elastic member may be composed of a plurality of elastic members having different tensile stresses. Further, in the plurality of second elastic elastic members and / or third elastic elastic members arranged, the elastic elastic material arranged on the outermost side than the elastic modulus of the elastic elastic material arranged on the innermost side. It is also effective that the elongation stress of is larger.

According to another embodiment of the pants-type disposable diaper according to the present invention, a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between these sheets. Having an absorbent main body, an outer layer sheet, and an inner layer sheet laminated on the outer layer sheet, wherein the absorbent main body is joined at least in part, and the absorbent body is wrapped around the waist from the wearer's belly when worn. An outer member that holds the main body against the wearer and holds it, and joins opposite side flap side edges of the front body and the rear body of the outer member to form a waist opening and a pair of leg openings. ,
In a pants-type disposable diaper in which a stretchable elastic member is arranged along the opening, the pair of leg openings are arranged on both sides in the longitudinal direction of the absorber located in the crotch of the diaper. A pair of first elastic elastic members, a pair of second elastic elastic members arranged from the vicinity of the front body side end portion of the first elastic elastic member to the side edge portions of the diaper, respectively. By arranging a pair of third elastic members arranged around the side edge portions of the diaper from the vicinity of the rear body side end portion of the elastic member, the leg opening around the entire circumference. Stretch elasticity is imparted, and at least 2 of each of the second stretch elastic member and the third stretch elastic member is provided.
The elastic elastic material is formed of at least two elastic elastic materials, and the distance between these elastic elastic materials extends from the front body-side end portion and the back body-side end portion of the first elastic elastic member to the side edge portions of each diaper. The distance between the stretchable elastic materials that are arranged so as to gradually spread between them and that are most spaced apart in the side edge portion of the diaper is ½ or more of the length of the side edge portion, and
A fourth elastic member may be arranged in the width direction of the diaper in a region where the absorbent main body is located between both side edges of the front body of the diaper and / or both side edges of the rear body.

At this time, the first elastic member can be arranged on the back sheet of the absorbent main body. Further, the first stretchable elastic member is disposed on the back sheet of the absorbent main body, and the second stretchable elastic member and the third stretchable elastic member are provided.
The stretchable elastic member and the fourth stretchable elastic member may be arranged between the outer layer sheet and the inner layer sheet of the exterior member. Further, the second elastic elastic member and / or the third elastic elastic member may be configured by using a plurality of elastic elastic members having different tensile stresses. Further, in the plurality of second elastic elastic members and / or third elastic elastic members arranged in a plurality, the elastic elastic material arranged outermost than the elastic elastic modulus of the elastic elastic material arranged in the innermost one of them. It is also effective that the elongation stress of is larger.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION According to the pants-type disposable diaper of the present invention, the elastic elasticity is imparted to the opening around the pair of legs, the opening around the waist, and the side around the waist, which is excellent. Have a feeling of wearing. The region around the waist where the absorber is present in the center of the ventral side and / or the dorsal side has elasticity, which has the effect of keeping the absorber in close contact with the wearer at all times. Since there is little gap between the body and the wearer, the leakage of urine and the like is small. Especially on the side around the waist, a plurality of elastic members arranged in a part around the legs are arranged so that the intervals gradually widen along the side openings of the diaper along the openings around the legs. As well as tightening around the legs as well as around the waist, the tightening direction of this elastic elastic member intersects both the length direction of the diaper and the width direction of the diaper, and works in the direction to tighten both directions. It is a diaper that does not slip easily due to the force of lifting the diaper when worn.

Further, the pants-type disposable diaper of the present invention is arranged in a part of the circumference of the leg so as to gradually widen toward the side edge of the diaper along the opening around the leg. Since the stretchable elastic member composed of a plurality of stretchable elastic members is made of stretchable elastic materials having different extension stresses, it is possible to arrange the stretchable elastic members having different extension stresses depending on the location, mainly depending on the purpose and effect of tightening. It is possible.

Further, in the pants-type disposable diaper of the present invention, the distance between the stretchable elastic materials that are most distant from each other at the side edges of the front and rear bodies is not less than ½ of the length of the side edges. It is necessary for arranging the stretchable elastic materials so that one set of stretchable elastic members has a function of tightening around the legs and also tightening the waist side portion, and the distance between the stretchable elastic materials that is most separated is the length of the side edge portion. If the elastic elastic member is placed closer to the leg opening or closer to the waist opening, if the elastic elastic member is less than ½ of the length, only one of the leg and the waist side is placed. Only tightening effect can be obtained.

Further, even if the stretchable elastic material is arranged near the opening around the leg at the side edges of the front and rear bodies of the diaper,
Even if the elastic elastic member is arranged near the waist opening, it is possible to tighten both around the legs and around the waist, and a part of the elastic material is arranged around the waist. They may intersect at the side edge of the diaper. Further, a plurality of pants-type diapers according to the present invention are arranged around the legs of the diaper so that the distance between them gradually increases toward the side edge of the diaper along the leg openings. The stretchable elastic member is arranged on the leg opening side because the stretchable elastic material arranged on the leg opening side has a larger tensile stress than the stretch elastic material arranged on the waist opening side. The elastic elastic material with a large elongation stress mainly acts to tighten a part around the leg, and the elastic elastic material placed on the waist opening side mainly mainly around the waist side with an appropriate tightening force for diaper shaving. It is possible to act in a direction to prevent falling.

Further, in the pants-type disposable diaper of the present invention, the tightening force on the entire circumference around the legs is the same as that of the first stretchable elastic member disposed at both sides of the absorbent longitudinal center located at the crotch of the diaper. Around the leg because the tightening force of the second elastic member and the third elastic member, which also have the tightening force and the effect of tightening the waist circumference side portion arranged in the remaining part around the leg, work substantially seamlessly. Has a good fit and can suppress leakage from the crotch.

Further, in the underpants type disposable diaper of the present invention, the fourth body is arranged in a region around the waist of the front body where the absorber exists and / or in a region around the waist of the waist where the absorber exists. The stretchable elastic member has a function of constantly adhering the absorber to the wearer by these stretchable elasticities, and the fourth stretchable elastic member is arranged only in the region where the absorber exists, and its tightening force is absorbed. Since it acts on the wearer's body through the body, it does not give the wearer an excessive amount of pressure and does not impair the wearing feeling. At this time, the effect is sufficiently exerted even if the fourth elastic member is arranged only on the front body side, and on the rear body side, the absorber is the fourth elastic member depending on the body shape of the hip portion. Even if it is not attached, it will naturally adhere, but if it is also placed on the back body side, a better wearing feeling can be obtained.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing the embodiments of the present invention. FIG. 1 is a perspective view of a pants-type disposable diaper according to an embodiment of the present invention. The underpants type disposable diaper 1 of the present invention shown in FIG. 1 has leg openings 2 and waist openings 3, and a front body 4 extending between the left and right leg openings 4 is formed. The rear body 5 is adhesively closed by side seams 6. The side seam 6 is adhesively closed by overlapping the front body 4 and the back body 5 and protruding both side edges outward, or both side edges protruding inward, or one side edge outside and the other side edge out. In a state of protruding inward, hot melt adhesive, pressure melting, ultrasonic melting, and the like are used alone or in combination along the outermost portions of both side edges for joining.

FIG. 2 is a perspective view showing a stretched state in which the side seam 6 of the pants-type diaper 1 of the present invention shown in FIG. 1 is opened and expanded. When the side seam 6 is worn in the state shown in FIG. The joined side portions are respectively shown as side flaps 7 by being opened and deployed, and are provided on the back seat where the longitudinal center portions on both sides of the absorber 8 are located in the vicinity of the left and right leg opening portions 2. First elastic members 9 and 10 provided therein, second elastic members 11 and 12 made of a plurality of elastic materials provided on the front body 4, and a plurality of elastic materials provided on the rear body 5. Elastic elasticity is imparted by the third elastic elastic members 13, 14 consisting of, and elastic elasticity is imparted by the waist elastic elastic members 15, 16 in the vicinity of the waist opening.
The area around the waist of the front body 4 where the absorber is present and / or
Alternatively, the region around the waist of the back body 5 where the absorber is present is provided with the stretch elasticity by the fourth stretch elastic members 17, 18.

3 to 5 are plan views of the pants-type disposable diaper of the present invention viewed from the liquid-permeable top sheet side. The first elastic members 9 and 10 and the second elastic member shown in FIG. Elastic members 11 and 12 and a third elastic member 13,
14 shows an example of 14 arrangements. In each case, the second elastic members 11 and 12 are each made of a plurality of thread-like elastic elastic materials, and mainly the second A elastic elastic materials 31 and 32 that act to tighten the leg openings of the front body and the rear body mainly. Of the second elastic elastic material 33, 34 for tightening the waist side portion of the third elastic member 13, 1
4 is composed of a plurality of elastic elastic materials in the form of a thread, and mainly acts to tighten the openings around the legs of the front body 3A elastic members 35 and 36, and mainly works to tighten the waist side portions of the back body. It is composed of 3B elastic elastic materials 37 and 38.

Further, the fourth elastic members 17 and 18 are disposed in the region around the waist of the front body where the absorber exists and / or the region around the waist of the back body where the absorber exists. Has the function of constantly adhering the absorber to the wearer. Also, in the pants-type disposable diaper of the present invention, the second elastic member and / or the third elastic member can be configured by using a plurality of elastic members having different tensile stresses, and the second elastic member can be used. Material 3
It is possible to set the stretchable elastic materials having different stretching stresses to the stretchable elastic materials 1 and 32 and the second B stretchable elastic materials 33 and 34 so as to have the required stretching stresses at a part around the leg and the waist side portion. The same applies to the 3A stretchable elastic materials 35 and 36 and the 2B stretchable elastic materials 37 and 38.

Therefore, in the underpants type disposable diaper of the present invention, the stretching stress of the second A stretchable elastic materials 31, 32 can be made larger than that of the second B stretchable elastic materials 33, 34. The 2A stretchable elastic materials 31 and 32 mainly have a function of tightening a part around the leg to give a fit property of the leg-opening part and preventing leakage from the opening part.
The B elastic elastic material can mainly act on the waist side in a direction to prevent slipping down of the diaper with an appropriate tightening force without giving the wearer more pressure than necessary, and the 3A elastic elastic material can be used. The same applies to 35, 36 and the second B elastic elastic materials 37, 38.

FIG. 6 is a pants-type disposable diaper 1 according to the present invention.
FIG. 3 is a cross-sectional view showing a state in which the absorbent body 8 is cut in the XX ′ direction along the longitudinal direction of the diaper in FIG. 2, and the absorber 8 is arranged between the liquid-permeable top sheet 19 and the liquid-impermeable back sheet 20. The waist elastic elastic members 15 and 16 and the fourth elastic elastic members 17 and / or 18 are arranged between the absorber 8 and the liquid impermeable back sheet 20.

FIG. 7 is a cross-sectional view showing a pants-type diaper 1 according to another embodiment of the present invention, which is cut in the XX 'direction along the longitudinal direction of the diaper in FIG. , An absorbent main body 21 obtained by disposing the absorbent body 8 between the liquid-permeable top sheet 19 and the liquid-impermeable back sheet 20, and an exterior sheet 24 composed of an outer layer sheet 22 and an inner layer sheet 23 1 shows an example of a pants-type diaper obtained by converting the waist elastic elastic members 15, 16 and the fourth elastic elastic members 17 and / or 18 into the exterior sheet 24.
Is disposed between the outer layer sheet 22 and the inner layer sheet 23.

FIG. 8 is a pants-type disposable diaper 1 according to the present invention.
FIG. 3 is a transverse cross-sectional view showing a state in which the absorbent body 8 and the first elastic members 9 and 10 are cut in the Y-Y ′ direction perpendicular to the longitudinal direction of the diaper in FIG. And the back sheet 20.

FIG. 9 is a cross-sectional view showing a pants-type disposable diaper 1 according to another embodiment of the present invention, which is cut in the YY 'direction perpendicular to the longitudinal direction of the diaper in FIG. , An absorbent main body 21 obtained by disposing the absorbent body 8 between the liquid-permeable top sheet 19 and the liquid-impermeable back sheet 20, and an exterior sheet 24 composed of an outer layer sheet 22 and an inner layer sheet 23 2 shows an example of a pants-type diaper obtained by converting the absorbent body 8 and the first elastic member into elastic body 21 between the liquid-permeable topsheet 19 and the liquid-impermeable backsheet 20. ing.

FIG. 10 is a transverse cross-sectional view showing a state in which the pants-type disposable diaper 1 of the present invention is cut in the ZZ 'direction or the WW' direction perpendicular to the longitudinal direction of the diaper in FIG. Absorber 8 and second elastic members 11, 12 or third
The stretchable elastic members 13 and 14 are arranged between the liquid-permeable top sheet 19 and the liquid-impermeable back sheet 20.
Further, FIG. 11 shows a state in which the pants-type disposable diaper 1 according to another embodiment of the present invention is cut in the ZZ 'direction or the WW' direction perpendicular to the longitudinal direction of the diaper in FIG. In the cross-sectional view, the second elastic members 11, 12 or the third elastic members 13, 14 are arranged between the outer layer sheet 22 and the inner layer sheet 23 in the exterior sheet 24.

At this time, the fourth elastic members 17 and / or 18 are arranged between the absorbent body 8 and the liquid impermeable back sheet 20 in FIG. 10, and the absorbent body in the absorbent main body 21 in FIG. 8 and liquid impermeable back sheet 2
0 or the outer layer sheet 22 in the exterior sheet 24
Between the inner layer sheet 23 and the inner layer sheet 23.
None of them are shown in the drawing because they do not exist in the cross section of ZZ 'or WW'.

As the liquid-permeable top sheet used in the pants-type diaper of the present invention, a liquid-permeable non-woven fabric made of synthetic fibers made of polyethylene, polypropylene, polyester or other thermoplastic resin is used. The permeable backsheet is a liquid-impermeable polyethylene sheet, preferably a polyethylene sheet having micropores, a moisture-permeable liquid-impermeable sheet obtained by adding a filler to a thermoplastic resin and stretching, or a liquid-impermeable material thereof. It may be a laminate of a flexible sheet and a non-woven fabric, and when moisture permeability is imparted, there is no fear of stuffiness and it is more comfortable.

The first elastic elastic member, the second elastic elastic member, the third elastic elastic member, the fourth elastic elastic member and the elastic member elastically extending around the waist are used as usual diapers such as urethane thread and rubber thread. Can be used as it is, and these elastic members are placed in the leg opening, waist opening, front body and / or back body waist center part in the stretched state. It is bonded and fixed to a predetermined area by a hot melt adhesive.

The fluff pulp is preferably used as a main material in combination with a high-absorbent polymer, and other absorbent paper may be used alone, or a mixture or laminate of heat-sealing fibers.
Further, it is preferable to have a laminated structure in which the whole is wrapped with tissue, and the shape of the absorber may be an hourglass type or a rectangular type, but the hourglass type can obtain a better fit property.

For the outer layer sheet 22 and the inner layer sheet 23, a nonwoven fabric made of synthetic fibers made of polyethylene, polypropylene, polyester or other thermoplastic resins can be used.

[0031]

EFFECTS OF THE INVENTION According to the pants-type disposable diaper of the present invention, elastic elasticity is imparted to the openings around both legs of the diaper, the openings around the waist, and a part around the waist to provide an excellent wearing feeling. In particular, on the side part around the waist, there are elastic elastic members made of a plurality of elastic materials arranged in a part around the leg, and the side edges of the diaper along the opening around the leg. The stretchable elastic members are arranged such that the distance between the stretchable elastic members gradually increases as they reach the portion, and the distance between the stretchable elastic materials that are most distant from each other at the side edges is at least half the length of the side edges. Therefore, as well as tightening around the legs as well as around the waist, the direction of tightening of this elastic elastic member intersects both the length direction of the diaper and the width direction of the diaper and acts in the direction to tighten both directions. , The force to lift the diaper when worn The diaper is less slip down to work.

Further, the pants-type disposable diaper of the present invention is arranged in a part of the circumference of the leg so as to gradually widen toward the side edge of the diaper along the opening around the leg. Stretch elastic members made of multiple stretch elastic materials are made of stretch elastic materials with different stretching stresses. Therefore, stretch elastic members with different stretching stresses are mainly arranged depending on the placement location depending on the purpose and effect of tightening. It is possible to

Further, the pants-type disposable diaper of the present invention is arranged in a part of the circumference of the diaper so as to gradually widen toward the side edge of the diaper along the opening around the leg. A stretchable elastic member composed of a plurality of stretchable elastic materials has a stretching stress larger than that of the stretchable elastic material arranged on the side of the opening around the leg and larger than that of the stretchable elastic material arranged on the side of the opening around the waist. The stretchable elastic material placed on the side of the peripheral opening and having a large elongation stress mainly has the effect of tightening a part around the leg, and the stretchable elastic material placed on the side of the waist opening around the waist mainly supports the waist. It is possible to act in a direction to prevent the diaper from slipping off with an appropriate tightening force.

Further, in the underpants type disposable diaper of the present invention, the tightening force on the entire circumference around the legs, and the elastic elastic members arranged on the backsheet on both sides in the longitudinal center of the absorbent body located at the crotch of the diaper. Since the tightening force of the elastic elastic member that also combines the tightening force of and the tightening effect of the waist side part located in the remaining part around the leg works seamlessly, a good fit around the leg is achieved. It is possible to prevent leakage.

Further, in the pants-type disposable diaper of the present invention, the elastic elastic member is detached also in the region where the absorber is present around the waist of the front body and / or in the region where the absorber is present around the waist of the back body. These elastic members have the function of keeping the absorbent body in close contact with the wearer due to these expansion and contraction elasticity, and the fourth elastic member is arranged only in the area where the absorption body exists, and its tightening force is absorbed. Since it acts on the wearer's body through the body, it does not give the wearer an excessive amount of pressure and does not impair the wearing feeling.

[0036]

[Brief description of the drawings]

FIG. 1 is a perspective view of a pants-type disposable diaper of the present invention.

FIG. 2 is a perspective view showing a state in which side seams of the pants-type diaper shown in FIG. 1 are opened.

FIG. 3 is a plan view of the diaper showing an example of the arrangement of elastic elastic members around the legs of the pants-type diaper of the present invention, as viewed from the liquid-permeable topote side.

FIG. 4 is a plan view of another example of the arrangement of elastic elastic members around the legs of the pants-type disposable diaper of the present invention, viewed from the liquid-permeable top sheet side.

FIG. 5 is a plan view of a diaper as seen from the liquid-permeable top sheet side, showing another example of the arrangement of the elastic members around the legs of the pants-type diaper of the present invention.

FIG. 6 is a cross-sectional view showing an example of a state in which the pants-type diaper of FIG. 2 is cut in the XX ′ direction along the longitudinal direction of the diaper.

7 is a transverse cross-sectional view showing another example of the pants-type diaper of FIG. 2 cut in the XX 'direction along the longitudinal direction of the diaper.

FIG. 8 is a cross-sectional view showing an example of a state in which the pants-type diaper of FIG. 2 is cut in the YY ′ direction perpendicular to the longitudinal direction of the diaper.

9 is a cross-sectional view showing another example of the pants-type diaper of FIG. 2 cut in the YY 'direction perpendicular to the longitudinal direction of the diaper.

10 is a cross-sectional view showing an example of a state in which the pants-type diaper of FIG. 2 is cut in the ZZ 'direction or the WW' direction perpendicular to the longitudinal direction of the diaper.

FIG. 11 is a cross-sectional view showing another example of the pants-type diaper of FIG. 2 cut in the ZZ ′ direction or the WW ′ direction perpendicular to the longitudinal direction of the diaper.

[Explanation of symbols]

 1: Pants-type diaper 2: Opening around leg 3: Opening around waist 4: Front body 5: Back body 6: Side seam 7: Side flap 8: Absorber 9, 10: 1st elastic member 11 , 12: Second stretch elastic member 13, 14: Third stretch elastic member 15, 16: Waist circumference stretch elastic member 17, 18: Fourth stretch elastic member 19: Liquid permeable top sheet 20: Liquid impermeable back sheet 21: Absorbent body 22: Outer layer sheet 23: Inner layer sheet 24: Exterior member 31, 32: 2A stretch elastic material 33, 34: 2B stretch elastic material 35, 36: 3A stretch elastic material 37, 38: 3B Stretchable elastic material

Claims (8)

[Claims] 1. A side flap comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between these sheets, and extending from a front body side portion and a back body side portion. In a pants-type disposable diaper, which is formed by joining both side edges of each other, has an opening around a waist and a pair of legs, and an elastic elastic member is arranged along the opening, the pair of legs In the peripheral opening, a pair of first elastic members disposed on the back sheet on both sides in the longitudinal center of the absorbent body located at the crotch part of the pants-type diaper and the pair of first elastic members. A pair of second elastic members disposed between the respective front body side end portions of the elastic members and both sides of the front body side of the back sheet, and a rear body side of each of the pair of first elastic elastic members. From the vicinity of the end, The pair of third elastic members arranged between the two side edges of the rear body side are arranged so that the elastic elasticity is imparted over the entire circumference of the opening around the legs, and the second elastic member is provided. Each of the elastic member and the third elastic member is formed of at least two elastic materials, and the elastic elastic materials are spaced apart from each other in the vicinity of the front body-side end portion and the rear body-side end portion of the back sheet. To the respective side edges, the distance between the stretchable elastic materials which are arranged so as to gradually widen and which are most distant from each other at the side edges is ½ or more of the length of the side edges. , In the region where the absorber is present between the both side edges of the front side flap and / or between the two side edges of the rear side flap in the width direction of the diaper between the backsheet and the topsheet. Fourth stretch bullet A pants-type disposable diaper characterized by having a flexible member. 2. The pants-type use according to claim 1, wherein the second elastic elastic member and / or the third elastic elastic member are configured by using a plurality of elastic elastic members having different tensile stresses. Diaper. 3. A plurality of the second stretchable elastic members and / or the third stretchable elastic members arranged at the outermost side than the stretchable elastic modulus of the innermost stretchable elastic material. The pants-type disposable diaper according to claim 2, wherein the stretchable elastic material has a larger tensile stress. 4. An absorbent main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these sheets, an outer layer sheet, and an outer layer sheet laminated on the outer layer sheet. An inner layer sheet, and the absorbent body is joined at least at a part thereof, and the outer body surrounds the waist of the wearer's abdomen and holds the absorbent body against the wearer when the wearer wears the outer body. A pant-type wearer in which the waist flap opening and a pair of leg openings are formed by joining opposite side flap side edges of the front body and the back body of the member, and a stretchable elastic member is arranged along the opening. In the diaper, in the pair of leg openings, a pair of first elastic members disposed on both sides in the longitudinal direction of the absorber located in the crotch of the diaper, and the first elastic member. Front body end A pair of second elastic members arranged from the side over the side edges of the diaper, and from the vicinity of the rear body side end of the first elastic member to the side edges of the diaper. By arranging the pair of third stretch elastic members arranged, stretch elasticity is imparted over the entire circumference of the leg opening, and the second stretch elastic member and the third stretch elastic member are respectively provided. The elastic elastic material is formed of at least two elastic elastic materials, and the distance between these elastic elastic materials extends from the front body-side end portion and the rear body-side end portion of the first elastic elastic member to the side edge portion of each diaper. The distance between the stretchable elastic materials which are arranged so as to gradually spread between the elastic diapers and are separated most at the side edges of the diaper is ½ or more of the length of the side edges. Between front edges and / or both back edges The said region which absorbent body is located between the edges, pant disposable diaper, wherein a fourth stretchable elastic members are disposed in the width direction of the diaper. 5. The pants as set forth in claim 4, wherein the first stretchable elastic member is arranged on a back sheet of the absorbent main body. 6. The first stretchable elastic member is disposed on a back sheet of the absorbent main body, and the second stretchable elastic member, the third stretchable elastic member and the fourth stretchable elastic member are the same as those of the exterior member. The pants-type diaper according to claim 4, wherein the pants-type diaper is arranged between the outer layer sheet and the inner layer sheet. 7. The fourth elastic elastic member and / or the third elastic elastic member is configured by using a plurality of elastic elastic members having different stretching stresses. Item 6. A pants-type disposable diaper according to item 6. 8. A plurality of the second stretchable elastic members and / or the third stretchable elastic members arranged at the outermost side than the stretchable elastic modulus of the innermost stretchable elastic material. The pants-type disposable diaper according to claim 4, 5 or 6, wherein the stretchable elastic material has a larger tensile stress.