JP3422351B2 - Diapers - Google Patents

Diapers

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Publication number
JP3422351B2
JP3422351B2 JP09791797A JP9791797A JP3422351B2 JP 3422351 B2 JP3422351 B2 JP 3422351B2 JP 09791797 A JP09791797 A JP 09791797A JP 9791797 A JP9791797 A JP 9791797A JP 3422351 B2 JP3422351 B2 JP 3422351B2
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Japan
Prior art keywords
elastic
exterior
sheet
edge
absorbent
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Expired - Lifetime
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JP09791797A
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Japanese (ja)
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JPH10277091A (en
Inventor
好夫 平井
聡美 武末
勝 津幡
美雪 齋坂
Original Assignee
王子製紙株式会社
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Priority to JP09791797A priority Critical patent/JP3422351B2/en
Publication of JPH10277091A publication Critical patent/JPH10277091A/en
Application granted granted Critical
Publication of JP3422351B2 publication Critical patent/JP3422351B2/en
Anticipated expiration legal-status Critical
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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 portion which comes into contact with the left and right flanks when worn is previously prepared. A so-called pants-type diaper has been proposed, which is joined and fixed and provided with an opening around the waist and an opening around the legs. In such a pants-type disposable diaper, for example,
-16920, JP-A-4-28363, JP-A-4-166150 and JP-A-4-28920.
As described in Japanese Patent No. 1, the opening around both legs,
Elasticity is added to the waist opening and both sides around the waist to improve the followability and fit of the diaper to the wearer. 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 problems and to form a pants-type disposable diaper by an absorbent main body and an exterior member. The absorbent main body is provided with side flaps and is spaced upward from the absorbent main body. It has a leak prevention function and a leak prevention function that separates upward from the exterior member as a base point, and provides the absorbent body with a function of holding excrement originally required for a diaper in use inside and outside the absorbent body. In addition, the absorbent body is supported, the absorbent body is brought into close contact with the wearer's body, and the function of suppressing the displacement of the absorbent body with respect to the movement of the wearer is given, and the absorbent body and the exterior member are independent. It is to provide a pants-type disposable diaper having a very good wearing feeling and a function of preventing excrement from leaking by giving such a function.

[0006]

According to the present invention, a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber arranged between these sheets, and both longitudinal edges of the absorber are provided. From an absorptive body having a side flap extending outward, and the absorptive body being joined, and an exterior member that encloses the waist from the belly of the wearer to the waist and holds the absorptive body against the wearer when worn. The front body and the rear body of the exterior member are joined to each other at opposite side edges to form a waist opening and a pair of leg openings, and elastic elastic members are arranged along the openings. In a pants-type disposable diaper, the side flaps are folded back on the top sheet, and a side elastic portion of the folded side flaps has a first elastic member and a folded line portion has a second elastic member. Elastic member stretched And is adhesively fixed on the top sheet along the longitudinal direction of the absorbent main body between the folded line portion and the side edge portion, and both longitudinal end portions of the side flaps are on the top sheet. The absorbent main body is adhesively fixed, and the absorbent main body is adhesively fixed to the exterior member by an adhesive region provided in a width narrower than a width between both side edges in the longitudinal direction of the absorbent main body, so that the side when worn. Due to the contraction of the first elastic member provided on the side edge portion of the flap, the side edge portion of the side flap is spaced upward from the absorbent main body, and the second edge portion is provided on the folding line portion. the contraction of the elastic resilient member and the folding line portion is spaced from the outer member, wherein
The exterior member includes an outer layer sheet made of a non-woven sheet and an outer layer sheet.
Inner layer sheet consisting of non-woven sheet laminated on the sheet
And formed on the front body side of the exterior member.
The crotch part of the exterior member from one side edge.
Through to the other side edge, of which at least
A plurality of parts, a part of which is along the pair of leg openings
A third elastic member made of an elastic material is used for the outer layer system.
Is arranged in a stretched state between the sheet and the inner layer sheet, and
On the rear body side of the exterior member, one side edge
From the crotch of the exterior member to the other side edge
At least a part of which is around the pair of legs
Fourth composed of a plurality of stretchable elastic materials along the opening
The stretchable elastic member of the outer layer sheet and the inner layer sheet
The third stretchable elastic member , which is disposed in an extended state between the third stretchable elastic member and the third stretchable elastic member.
And the fourth elastic member at the crotch of the exterior member
Placed without intersecting, these stretch elastic materials
The distance is from the crotch of the exterior member to the front and rear bodies.
It is arranged so that it gradually expands until it reaches the side edge
And side edges of at least one of the front and rear exterior members
The distance between the most elastic elastic materials is
Is more than half the length of the part, and further the third expansion and contraction
The elastic member and the fourth elastic member are the crotch part of the exterior member.
Is cut at the center along the longitudinal direction in
At least part of the crotch of the brace is non-stretched
The present invention relates to a pants-type disposable diaper, which is characterized in that it is arranged in a standing state .

[0007] The present invention, the side flaps said about pant disposable contact <br/> Mutsu, characterized in that it consists nonwoven sheet extending from the longitudinal side edges of the backsheet. Further, the present invention relates to each of the pants-type disposable diapers, wherein the absorbent body is formed in an hourglass shape having a width in a central portion narrower than widths at both ends in a longitudinal direction thereof .

[0008]

[0009]

According to the present invention, the third stretchable elastic member and / or the fourth stretchable elastic member is formed by using a plurality of stretchable elastic materials having different stretching stresses. It is related to a disposable diaper.

In the third stretchable elastic member and / or the fourth stretchable elastic member, the present invention is more preferable than the stretching stress of the stretchable elastic material arranged on the inner side of the waist around the opening. The pants-type disposable diaper according to any one of the above, wherein the stretchable elastic material disposed on the side of the leg opening, which is the outer side , has a larger extension stress.

[0012] In the present invention, a plurality of diapers are provided in the width direction between the outer layer sheet and the inner layer sheet between both side edges of the front body and / or between both side edges of the back body of the exterior member. The fifth stretchable elastic member made of a stretchable elastic material is arranged in a stretched state, and relates to any of the above-mentioned pants-type disposable diapers.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION According to the pants-type disposable diaper of the present invention, the absorbent main body is provided with an absorber and side flaps extending outward from both longitudinal edges of the absorber, and the side flaps are The first stretchable elastic member is arranged in an extended state on the side edge of the side flap folded back on the top sheet, and the second stretchable elastic member is stretched in the folded line portion. The side flaps are adhesively fixed on the top sheet along the longitudinal direction of the absorbent main body between the folding line portion and the side edge portion, and the longitudinal side ends of the folded back side flap are placed on the top sheet. The side edge is spaced upward from the absorbent body with the point of being fixed and adhesively fixed to the top sheet between the folded line portion and the side edge, and it is a pants type integrated with the exterior member. Oh When worn as a pair, the side edge portion adheres to the inner side of the wearer's thigh, and the side flap portion extending from the base point to the side edge portion forms the first pocket structure on both sides of the absorbent main body. , and if you excrete large amounts of urine at a time, and if you excrete urine in the lateral decubitus state, excrement even when the excretion of loose stools or watery feces is as difficult leaks to the outside of the diaper by the pocket structure Has become.

In this case, an hourglass-shaped absorber is used as the absorber, and the first side flap is used as described above.
When the pocket structure is formed, the gap between the base points of the side flaps becomes wider than the lateral width of the absorber in the central portion along the width direction of the absorber, so that the absorber is wrapped in the pocket structure. When a large amount of urine is excreted in the central portion along the width direction of the absorbent body, that is, in the crotch, the absorption speed of the absorbent body is smaller than the speed of urination, or urine is absorbed to some extent, and the absorption speed of the absorbent body is Even if it is in a lowered state, urine is temporarily contained in the pocket structure,
It becomes possible to suppress urine from leaking out of the absorbent main body as much as possible.

In the absorbent body of the pants-type diaper of the present invention, the folding line of the side flap has a second portion.
The stretchable elastic member is arranged in an expanded state and is bonded to the exterior member by an adhesive region provided in a width narrower than the width between the both side edges of the absorbent main body in the longitudinal direction. When used as a diaper when used as a mold, the folded line portion is spaced upward from the exterior member with the outer edges of the adhesive region between the absorbent body and the exterior member as base points.
By the folded line part closely contacting the inside of the wearer's thigh,
It becomes possible to form a second pocket structure on the outer side of the first pocket by the side edge portion of the side flap and the folded line portion of the side flap, and the second pocket can be formed even when the excrement passes over the first pocket. Since it can be contained inside, it becomes possible to further suppress the excrement from leaking out of the absorbent main body.

At this time, in the underpants type disposable diaper of the present invention, the liquid-impermeable back sheet forming the absorbent main body is made equal to the lateral width of both longitudinal end portions of the absorbent body, and the side flaps of the back sheet are formed. When formed from a non-woven fabric sheet extending from both side edges in the longitudinal direction, the outer surface of the second pocket with respect to the absorbent main body has liquid impermeability to further suppress excrement from leaking out of the absorbent main body. Is possible.

In the underpants type disposable diaper of the present invention, the base point of the first pocket structure, which is the point where the region between the folded back line portion and the side edge portion of the folded back side flap is adhesively fixed to the top sheet. And the position of the base point of the second pocket structure, which is the point where the absorbent main body is adhesively fixed to the exterior member, when the base point of the first pocket structure is inside the base point of the second pocket structure. A U-shaped cross-sectional shape can be formed by the first pocket structure and the second pocket structure, and when the base point of the first pocket structure and the base point of the second pocket structure are at the same position, It is possible to form a V-shaped cross section by the first pocket structure and the second pocket structure, and
When the base point of the first pocket structure is located outside the base point of the second pocket structure, it is possible to form a Y-shaped cross-sectional shape in which the first pocket structure branches from the second pocket structure. In any case, it is possible to minimize the leakage of excrement out of the absorbent main body.

The pants-type disposable diaper of the present invention provides the absorbent main body with a function of holding excrement originally required for the disposable diaper inside and outside the absorbent body, and the absorbent body as the exterior member. It has a function to hold the absorbent body in close contact with the wearer's body and to suppress the displacement of the absorbent body against the movement of the wearer.The exterior member has openings around the pair of legs. Elastic elasticity is given to the opening around the waist and the side around the waist to give a good wearing feeling, and elastic elasticity is also given to the abdomen and / or the back around the waist. By the action of bringing the absorbent main body into close contact with the wearer, there is little gap between the absorbent main body and the wearer so that leakage of urine and the like is small, and the outer layer sheet and the inner layer sheet of the exterior member are further reduced. Is good when formed with a non-woven sheet Breathable, without staying in the internal diapers disposable use sweat during wear, very good wear feeling similar to the feeling of wearing the underwear can be obtained.

The stretchable elastic member arranged in the pair of leg openings in the outer member of the pants-type diaper according to the present invention is provided with an elastic member from one side edge portion on the front body side of the outer member. Through the crotch portion of the other side edge portion, at least a part of which extends along the pair of leg-surrounding openings and is made of a plurality of stretchable elastic materials. In the rear body side of the exterior member, between the one side edge part, the crotch part of the exterior member, and the other side edge part, at least a part of which is disposed around the pair of legs. A fourth stretchable elastic member made of a plurality of stretchable elastic materials along the opening is arranged in an extended state between the outer layer sheet and the inner layer sheet without intersecting with the third stretchable elastic member,
Since the third elastic member and the fourth elastic member are separated from each other in the crotch portion of the exterior member, the contraction force of the elastic elastic member is exerted on the exterior member in the crotch portion along the pair of leg openings. Not working.

In the pair of leg openings in the outer member of the pants-type diaper according to the present invention, elastic elastic members are arranged in portions other than the crotch part, so that the absorbent main body is not affected by the movement of the wearer. It is essential to keep the absorbent body in close contact with the body and prevent the absorbent body from slipping during wearing, but in the crotch region, the side edge portion of the first pocket structure separated from the absorbent body surface and the exterior member surface. It is desirable to form the deep pocket structure by making the folded line portions of the second pocket structure, which are spaced apart from each other, contact the wearer as far as possible from the respective surfaces. When the third elastic member and the fourth elastic member intersect at the crotch portion and the contracting force continuously acts along the leg openings, the crotch portion of the exterior member is brought into close contact with the wearer. Action occurs, first
The side edge portion of the pocket structure and the folded line portion of the second pocket structure are bent so as not to be easily separated from the absorbent main body surface and the exterior member surface, and it is difficult to form a deep pocket structure. Depending on the movement of the wearer, the side edge portion of the first pocket structure or the folded line portion of the second pocket structure is separated from the absorbent main body surface or the exterior member surface from the respective base points toward the outside of the diaper. This is not desirable because a condition is likely to occur, in which case the leakage prevention effect is significantly reduced.

Further, in the pants-type disposable diaper of the present invention, the stretchable elastic material forming the third stretchable elastic member and the fourth stretchable elastic member arranged on the exterior member has a space between them. The distance between the stretchable elastic materials which are arranged so as to gradually spread from the crotch part to the respective side edges of the front and rear bodies, and which are separated most at the side edges of at least one exterior member of the front and rear bodies. If it is arranged so that it is more than ½ of the length of the side edge, the legs are tightened and the waist side is also tightened. The elastic elastic members are tightened in the length direction of the diaper and the width of the diaper. It acts in a direction that intersects both directions and tightens both directions, and when it is worn, it acts to lift the diaper and, especially in the back body, it is arranged so as to wrap the buttocks. It fell the pants-type disposable diapers can be obtained less.

In the pants-type disposable diaper of the present invention, the stretchable elastic material forming the third stretchable elastic member and the fourth stretchable elastic member disposed on the exterior member is the most at the side edges of the front and rear body. The distance between the stretched elastic materials separated from each other is not less than ½ of the length of the side edge portion. One set of the third stretchable elastic member and the fourth stretchable elastic member tightens the legs and the waist. It is necessary in order to arrange the stretchable elastic material so that the side portions also have a function of tightening, and when the distance between the stretchable elastic materials that are most separated is less than half the length of the side edge portion, the stretchable elastic member is Depending on whether it is placed near the leg opening or the waist opening,
Only the effect of tightening either the leg or the waist side can be obtained.

In the pants-type disposable diaper of the present invention, the third elastic member and the fourth elastic member arranged on the outer member are cut at the center of the outer member along the longitudinal direction in the crotch portion. When at least a part of the exterior member is arranged in a non-stretched state in the crotch portion, the absorbent body in the crotch portion can absorb urine in a wide area without being deformed by the contracting force of the elastic elastic member so as to shrink its width. It is more desirable because the side edge of the first pocket structure comes closer than necessary and covers the liquid-permeable top sheet in some cases, and the phenomenon of impeding the absorption of urine into the absorbent body is unlikely to occur. When the third elastic member and the fourth elastic member are arranged without cutting at the crotch, the same effect can be obtained by suppressing the expansion ratio. It is.

In the pants-type disposable diaper of the present invention, the third elastic member and the fourth elastic member arranged on the exterior member are made of elastic materials having different tensile stresses. It is also possible to arrange elastic elastic members having different extension stresses depending on the arrangement location, mainly depending on the purpose and effect of the tightening.

Further, in the pants-type disposable diaper of the present invention, the third elastic member and the fourth elastic member arranged on the exterior member are disposed at the waist even if they are arranged near the leg openings. Even if it is arranged near the opening, it is possible to tighten both around the leg and around the waist regardless of which, and a part of the elastic material is elastic elastic member arranged around the waist. They may intersect at the side edges of the diaper.

In the pants-type disposable diaper of the present invention, the third elastic member and the fourth elastic member arranged on the outer member are arranged on the outermost side, that is, on the leg opening side. Stretching elastic material arranged on the leg opening side has a large stretching stress by making the stretching elastic material have a larger stretching stress than the innermost stretch elastic material arranged on the waist opening side. The material mainly has the effect of tightening part of the circumference of the leg, and the elastic elastic material arranged on the waist opening side mainly acts in the direction to prevent the diaper from slipping off with a moderate tightening force on the waist side. It is possible to

In the underpants type disposable diaper of the present invention, the width direction of the diaper is between the outer layer sheet and the inner layer sheet between the both side edges of the front body and / or the both side edges of the rear body of the exterior member. By arranging the fifth elastic member made of a plurality of elastic materials in a stretched state, it is possible to give the wearer the ability to keep the absorbent body in close contact with the wearer at this time. Even if the elastic member is arranged only on the front body side, the effect is sufficiently exerted, and on the rear body side, the absorber naturally adheres even without the fifth elastic member depending on the body shape of the buttocks. However, if placed on the back side as well, the effect of preventing displacement of the absorbent main body during wear is obtained even with respect to the movement of the wearer, and the fifth elastic elastic member is placed along the waist circumference. Even if they are continuous,
The same effect can be obtained even when discontinuous.

[0028]

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. Adhesive closure of the side seam 6 is made by stacking the front body 4 and the back body 5 and projecting both side edges outward, or with both side edges projecting inward, along with the hot melt adhesive along the outermost portions of both side edges, Bonding is performed by pressure melting, ultrasonic melting, etc. alone or in combination.

FIG. 2 is a perspective view showing an expanded state in which the side seams 6 of the pants-type diaper 1 of the present invention shown in FIG. 1 are opened and expanded, and the left and right leg openings 2 of the exterior member 7 are shown.
In the vicinity of, a third elastic member 8 provided on the front body 4 and made of a plurality of elastic materials and a fourth elastic member made of a plurality of elastic materials provided on the rear body 5 The elastic elasticity is imparted by the elastic member 9 and elastic elasticity is imparted by the elastic member 10 around the waist in the vicinity of the opening around the waist, and the elastic member 10 is applied around the waist of the front body 4 and the waist of the rear body 5. Expansion and contraction elasticity is given by the expansion and contraction elastic member 11 of 5.

FIG. 3 is a pants-type disposable diaper 1 according to the present invention.
FIG. 3 is a vertical cross-sectional view showing a state in which the absorbent article 12 is cut in the XX ′ direction along the longitudinal direction of the diaper in FIG. 2, in which the absorber 12 is a liquid-permeable top sheet 13 and a liquid-impermeable back sheet 1.
4 and the absorbent body 15 are formed between them.

The absorptive main body 15 is adhered and fixed on the inner layer sheet 16 constituting the exterior member 7 with a predetermined width in the longitudinal direction of the absorptive main body 15 and at least a portion thereof is adhered along the longitudinal direction. Outer layer sheet 1 located below
Both ends of 7 are folded back on the absorbent main body 15 while sandwiching the elastic member 10 around the waist so as to wrap it, and the fifth elastic member 11 includes the inner layer sheet 16 and the outer layer sheet 1.
It is located between 7 and. At this time, the absorbent main body 15
When the both ends and the central portion of the absorbent main body along the longitudinal direction of the absorbent main body are adhered to each other and the unadhered portion is provided, the expansion and contraction of the fifth elastic member 11 arranged around the waist during wearing is expanded and contracted. Is more preferable because the rigidity of the absorbent main body 15 is not hindered.

FIG. 4 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 main body 15 is cut in the Y-Y ′ direction perpendicular to the longitudinal direction of the diaper in FIG.
At least part of the absorbent main body 15 is adhesively fixed along the longitudinal direction, and the third elastic member 8 is arranged between the inner layer sheet 16 and the outer layer sheet 17.

In FIG. 4, the absorbent main body 15 comprises a liquid-permeable top sheet 13 and a liquid-impermeable back sheet 14.
And the absorbent body 12 arranged between them and the side flaps 18 extending outward from both side edges of the back sheet 14.
And the side flap 18 is folded back on the top sheet 13 by the folding line portion 19, and the folding line portion 1
A second elastic member 20 is arranged at 9.

The folded back side flap 18 is adhesively fixed to the top sheet 13 at a fixing point 21,
Further, a first elastic member 23 is arranged on the side edge portion 22 of the side flap 18 so as to be wrapped by the side flap 18.

Therefore, in the pants-type disposable diaper 1, the outer edge 24 of the adhesive width H between the absorbent main body 15 and the exterior member 7 is provided.
Is a base point, and a leak-proof flap having a folded line portion of the side flap 18 as a leading edge and a leak-proof flap having a side edge portion 22 of the side flap 18 as a leading edge are two. Since the elastic members are arranged in a heavy manner and the elastic elastic members are arranged in an extended state at the respective leading edges, a structure is formed in which the leading edges are in close contact with the skin during wearing.

FIG. 5 shows a pants-type disposable diaper 1 according to the present invention.
2 is a cross-sectional view showing a state in which the absorbent body 15 is cut in the ZZ 'direction perpendicular to the longitudinal direction of the diaper in FIG. 2, and the absorbent main body 15 is the inner layer sheet 16 constituting the exterior member 7 as in the case shown in FIG. At least a part of the elastic member is fixed to the upper part, and a fourth elastic member 9 is arranged between the inner layer sheet 16 and the outer layer sheet 17.

In FIG. 5, the absorbent main body 15 is similar to that shown in FIG. 4, a liquid-permeable top sheet 13, a liquid-impermeable back sheet 14, and an absorbent body 12 arranged between them. And side flaps 18 extending outward from both side edges of the back sheet 14, the side flap 1
8 is folded back on the topsheet 13 by forming the folded line portions 19 on both side edges of the absorber 12, and the folded back side flaps 18 are adhesively fixed to the topsheet 13.

FIG. 6 is a plan view showing a state in which a stretchable elastic member is arranged on the exterior member 7 of the pants-type disposable diaper of the present invention. The third stretchable elastic member 8 and the fourth stretchable elastic member in FIG. Member 9, elastic member 10 around waist, and fifth
An example of the arrangement of the stretchable elastic members 11 is shown. Each elastic member is made of a plurality of thread-like stretchable elastic materials, and these stretchable elasticity have a function of constantly adhering the absorber to the wearer. .

FIG. 7 is a plan view showing another example different from that shown in FIG. 6, in which a stretchable elastic member is arranged on the exterior member 7 of the pants-type diaper of the present invention, and the third stretchable elastic member 8 is provided. The fourth elastic member 9 and the fourth elastic member 9 are cut at the central portion along the longitudinal direction of the crotch portion of the exterior member 7, and each elastic member is made of a plurality of thread-shaped elastic members. It has the function of keeping the body in close contact with the wearer.

In the pants-type disposable diaper of the present invention, the third elastic member and / or the fourth elastic member may be composed of a plurality of elastic members having different tensile stresses. It is possible to set the necessary extension stress in each part of the leg part and the waist part of the exterior member 7.

As the liquid-permeable top sheet used in the pants-type diaper of the present invention, a liquid-permeable nonwoven 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 if moisture permeability is imparted, there is no fear of stuffiness and it is more comfortable.

Further, the first elastic member, the second elastic member, the third elastic member, the fourth elastic member, the fifth elastic member, and the waist elastic elastic member are urethane yarns. The elastic elastic bodies used for normal diapers, such as rubber thread, can be used as they are, and these elastic elastic members can be used in the stretched state to expand side flaps, leg openings, waist openings, and predecessor. Around and /
Alternatively, the back body is arranged in the central portion around the waist and is fixedly adhered to a predetermined region by a hot melt adhesive.

The absorbent preferably comprises fluff pulp as a main material and a high-absorbent polymer in combination. In addition, absorbent paper may be used alone, or a mixture or laminate of heat-sealing fibers or the like may be used.
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 side flaps, the outer layer sheet and the inner layer sheet, a nonwoven fabric made of synthetic fibers made of polyethylene, polypropylene, polyester or other thermoplastic resins can be used, and those having water repellency are more preferable.

[0045]

According to the pants-type disposable diaper of the present invention, the absorbent main body is provided with the absorbent body and side flaps extending outward from both longitudinal edges of the absorbent body, and the side flaps are topsheets. The first stretchable elastic member is arranged in an extended state at the side edge of the side flap folded back and folded, and the second stretchable elastic member is arranged in a stretched state at the folded line portion. , The side flaps are adhesively fixed on the top sheet along the longitudinal direction of the absorbent main body between the folded line portion and the side edge portion, and further, both longitudinal end portions of the folded back side flaps are fixed on the top sheet. And the side edge is spaced above the absorbent body from the point where it is adhered and fixed to the top sheet between the folding line and the side edge, and is a pants-type disposable diaper that is integrated with the exterior member. age When worn, the side edges adhere closely to the inside of the wearer's thighs, and the base point and the side edges form the first pocket structure on both sides in the width direction of the absorbent main body, so that a large amount of mass is removed at once. Even if urine is excreted, if urine is excreted in the lateral position, or if loose stools or watery stools are excreted, the pocket structure prevents the excrement from leaking out of the diaper.

When an hourglass-shaped absorber is used as the absorber and the first pocket structure is formed by the side flaps as described above, the lateral width of the absorber at the central portion along the width direction of the absorber. Since the distance between both base points of the side flaps is wider than that of the side flap and the absorbent body is wrapped in the pocket structure, the absorption speed of the absorbent body in the central portion along the width direction of the absorbent body, that is, the crotch area If a large amount of urine that is less than the rate of excretion is excreted, or if urine is absorbed to some extent and the absorption rate of the absorber is reduced, urine is temporarily contained in the pocket structure and It is possible to suppress the leakage of water to the outside of the absorbent main body as much as possible.

In the absorbent body of the pants-type disposable diaper of the present invention, the second elastic member is arranged in an extended state at the folding line of the side flap so that the width is narrower than the lateral width of the absorbent body. Since it is adhered to the exterior member by the provided adhesive region, when the pants-type diaper that is integrated with the exterior member is worn as a diaper, the fold line is formed in the adhesive region between the absorbent body and the exterior member. It is possible to further form the second pocket structure on the outer side of the first pocket structure by separating upward from the exterior member with the outer edge as a base point and the folded line being in close contact with the inner side of the thigh of the wearer. Even if the excrement passes over the first pocket, it can be contained in the second pocket, so that the excrement can be further suppressed from leaking to the outside of the absorbent main body. When the liquid-impermeable backsheet forming the absorbent body is made equal in width to both longitudinal ends of the absorbent body, and the side flaps are formed of a nonwoven sheet extending from both side edges in the longitudinal direction of the backsheet, Since the outer surface of the pocket of the absorbent body with respect to the absorbent main body is liquid impermeable, excrement can be further suppressed from leaking out of the absorbent main body.

Further, the pants-type disposable diaper of the present invention provides the absorbent main body with a function of retaining excrement originally required for the disposable diaper inside and outside the absorbent body, and the exterior member is the absorbent main body. The absorbent body is brought into close contact with the wearer's body while it is carried, and the absorbent body has a function of suppressing the displacement of the absorbent body even when the wearer moves, but the exterior member has openings around the pair of legs. Section, the opening around the waist, and the side parts around the waist have elastic elasticity and have a good wearing feeling, and the elastic elasticity is also applied to the abdominal part and / or the back side around the waist. By the action of bringing the absorbent main body into close contact with the wearer, a gap between the absorbent main body and the wearer is unlikely to occur, so that leakage of urine and the like is small, and the outer layer sheet forming the exterior member is further reduced. And the inner layer sheet consists of non-woven sheet It has good air permeability, without staying in the internal diapers disposable use sweat during wear, very good wear feeling similar to the feeling of wearing the underwear can be obtained.

[Brief description of 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 vertical 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.

FIG. 4 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.

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

FIG. 6 is a plan view showing a state in which a stretchable elastic member is arranged on the exterior member of the pants-type diaper of the present invention.

FIG. 7 is a plan view showing another example different from FIG. 6 and showing a state in which a stretchable elastic member is arranged on the exterior member of the underpants type diaper of the present invention.

[Explanation of symbols] 1: Pants-type diaper 2: Leg openings 3: waist opening 4: Front body 5: back body 6: Side seam 7: Exterior material 8: Third elastic member 9: Fourth elastic member 10: Elastic waist elastic around the waist 11: Fifth elastic member 12: Absorber 13: Top sheet 14: Back sheet 15: Absorbent body 16: Inner layer sheet 17: Outer layer sheet 18: Side flap 19: Folded line part 20: Second elastic member 21: Fixed point 22: Side edge of side flap 23: First elastic member 24: Outer edge of adhesive area

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshio Hirai, 1-10-6 Shinonome, Koto-ku, Tokyo Inside Shinonome Research Center, Oji Paper Co., Ltd. (56) Reference JP-A-8-280739 (JP, A) Kaihei 8-182703 (JP, A) Actual Kaihei 7-18714 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) A61F 13/15-13/84 A61F 5/44

Claims (6)

(57) [Claims]
1. A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body arranged between these sheets, and side flaps extending outward from both side edges in the longitudinal direction of the absorbent body. An absorbent main body having, and the absorbent main body being joined, and consisting of an exterior member that holds the absorbent main body against the wearer while surrounding the waist from the belly of the wearer when worn,
A pant type in which the front body and the rear body of the exterior member are joined to opposite side edges to form a waist opening and a pair of leg openings, and elastic elastic members are arranged along the openings. In the diaper to be used, the side flap is folded back on the top sheet, and a first elastic elastic member is provided at a side edge portion of the folded side flap, and a second elastic elastic member is provided at a folded line portion. Is arranged in an extended state, is adhesively fixed on the top sheet along the longitudinal direction of the absorbent main body between the folded line portion and the side edge portion, and the longitudinal ends of the side flaps are the top. The absorbent main body is adhesively fixed on a sheet, and further, the absorbent main body is adhesively fixed to the exterior member by an adhesive region provided in a width narrower than a width between both side edges in the longitudinal direction of the absorbent main body, so that the absorbent body is worn. Occasionally, due to contraction of the first elastic member provided on the side edge portion of the side flap, the side edge portion of the side flap is spaced upward from the absorbent main body and is provided on the folding line portion. The folded back line portion is separated from the exterior member by contraction of the second elastic member, and the exterior member is an outer layer sheet made of a nonwoven fabric sheet,
An inner layer sheet consisting of a non-woven sheet laminated on the outer layer sheet
And a side edge portion on the front body side of the exterior member.
To the other side edge through the crotch of the exterior member.
At least a part of which is the circumference of the pair of legs.
A plurality of stretchable elastic materials along the opening
The stretchable elastic member 3 includes the outer layer sheet and the inner layer sheet.
Disposed in an extended state between the rear body of the exterior member
On the side, from one side edge, the crotch of the exterior member
Through to the other side edge, of which
A plurality of parts, some of which are along the pair of leg openings
A fourth elastic member made of elastic material is
It is arranged in a stretched state between the layer sheet and the inner layer sheet.
It is, the third the expansion and contraction elastic member of the fourth stretchable elastic member before
The stretchable elastic materials are arranged in the crotch portion of the exterior member without intersecting with each other.
Between the lower part and each side edge of the front and back body
It is arranged so that it gradually expands, and at least the front and back body
In the side edge of one of the exterior members,
The distance between the elastic materials is more than half the length of the side edge.
In addition, the third elastic member and the fourth elastic member are
At the center of the crotch of the exterior member along the longitudinal direction.
Are cut off, and at the crotch of the exterior member,
Both parts are arranged in a non-stretched state
A pants-type diaper that you use.
2. The pants-type disposable diaper according to claim 1, wherein the side flaps are made of a non-woven fabric sheet extending from both side edges of the back sheet in the longitudinal direction.
Wherein the absorbent body, according to claim 1 or pants-type according to claim 2, characterized in that the width of the central portion as compared to the width of the longitudinal end portions are formed in a narrow hourglass A disposable diaper.
4. The method of claim 1 to claim, wherein said third stretchable elastic members and / or the fourth stretchable elastic member that is configured with a plurality of different stretchable elastic materials tensile stress
The pants-type disposable diaper according to any one of 3 above.
In wherein said third stretchable elastic members and / or the fourth stretchable elastic member, which is the innermost of the weather
Claims, characterized in that towards the extension stress of the stretchable elastic material disposed leg opening side is the outermost than tensile stress of the stretchable elastic material disposed strike around the opening side is large
A pants-type disposable diaper according to any one of claims 1 to 4 .
6. expansion and contraction of the plurality of the width direction of the diaper between the outer the predecessor around the outer sheet and the inner layer sheet is between between both side edges and / or the side edges of the back body member claims fifth stretchable elastic member made of an elastic material, characterized in that it is arranged in a stretched state 1 to claim 5 Neu
Pants-type disposable diaper according to item 1 .
JP09791797A 1997-04-02 1997-04-02 Diapers Expired - Lifetime JP3422351B2 (en)

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JP09791797A JP3422351B2 (en) 1997-04-02 1997-04-02 Diapers

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