JPH0956747A - Disposable brief-type body liquid absorptive underwear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve fitness in a girth direction of a body liquid absorptive underwear composed of briefs and a body liquid absorptive pad fitted to the inside thereof. SOLUTION: A brief-type diaper 1 being an example of the disposable brief- type body liquid absorptive underwear is constituted with briefs and a body liquid absorptive pad 3 fitted inside thereof, whereas the pad 3 has its front and rear ends 17, 18 bonded in the vicinity of a girth opening of the briefs, and a bonded portion 19 in the middle of the both ends 17, 18 is bonded to an inside leg part of the briefs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable pants-type body fluid absorbent wearing article, and more specifically, pants-type diapers and training pants for infants, incontinence pants, and physiologically treated pants for women with physical disabilities. Related to the article.

[0002]

2. Description of the Related Art Japanese Utility Model Laid-Open No. 6-21621 discloses a device in which at least both ends of a liquid-absorbent auxiliary panel (pad) bent into a U shape are joined to the inside of the crotch of disposable absorbent pants. . These pants prevent the leakage of excrement by the auxiliary panel being in close contact with the crotch of the wearer.

[0003]

In the known pants described above, the auxiliary panel is supported only at the front and rear ends thereof, so that when the wearer inserts the leg from the waist opening to the leg opening, the toes are toes. May get caught in the auxiliary panel, and the auxiliary panel may move laterally, which prevents you from wearing the pants quickly and normally. To avoid this, the entire lower surface of the auxiliary panel may be joined to the inner surface of the pants. However, in at least the pants in which the crotch region has elasticity in the girth direction, the joining of the auxiliary panel impairs the elasticity of the crotch region. Further, if the auxiliary panel and the pants are wholly integrated, the pants are deformed when the wearer's body moves, and the deformation acts on the auxiliary panel to create a gap between the auxiliary panel and the body. Excretion may leak from the.

Therefore, the present invention relates to pants with a liquid-absorbent pad which does not hinder wearing, and the pad is in close contact with the body without being affected by the deformation of the worn pants. The challenge is to ensure that

[0005]

In order to solve the above problems, the present invention has a crotch region interposed between a front side region and a rear side region, and has a waist opening and a pair of left and right leg openings. It is premised on a disposable pants-type bodily fluid-absorbent wearing article consisting of pants having the above and a liquid-absorbent pad extending along the inner surface of the pants in the longitudinal direction of the front and rear side regions with the crotch region as the center.

Under such a premise, the pad is composed of a liquid-permeable upper sheet, a lower sheet, and a liquid-absorbent panel interposed between these sheets, and both sheet portions extending from both front and rear ends of the panel. The front and rear end portions formed by at least one of the front and rear side areas are joined to the vicinity of the waist opening of the front and rear side areas and the front and rear end portions are joined to the crotch area, and the joint portion in the crotch area has a width of 1 to 30 mm.
It is a feature of the present invention that it extends to the center portion in the width direction of the pad, and is separated from the pants between the front and rear end portions and the center portion.

[0007]

The details of the disposable pants-type body fluid absorbent wearing article according to the present invention will be described with reference to the accompanying drawings.
It is as follows.

A pants-type diaper 1 shown in FIGS. 1 and 2 in a perspective view and a sectional view taken along the line II-II is an example of a disposable pants-type body fluid absorbent wearing article. The diaper 1 is composed of pants 2 and a liquid-absorbent pad 3 attached to the inside thereof. The pants 2 is composed of a front side region 6, a rear side region 7, and a crotch region 8 interposed between the both side regions 6, 7, and has a waist opening 9 and a pair of left and right leg openings 10. On both the left and right sides, there are zones 11 in which the inner surfaces of the side edges of the front and rear side areas 6 and 7 overlap each other and are joined intermittently in the vertical direction. In FIG. 1, the front and rear side regions 6 and 7 are above the upper end 10A of the leg opening 10, and the crotch region 8 is a portion below the upper end 10A. The front and rear side regions 6 and 7 include a plurality of first waist elastic members 13 extending along the peripheral edge of the waist opening 9 and a plurality of extending in parallel to the member 13 immediately above the upper ends 10A of the leg openings 10. It has a second waist elastic second elastic member 14 and a plurality of third waist elastic members 16 located between the elastic members 13, 14. Inseam 8
Is a stretchable plastic film 27 that appears in FIG.
In addition, it has leg elastic elastic members 15 extending along the rear half of the periphery of the leg opening 10. Liquid-absorbent pad 3
In addition to extending in the longitudinal direction of the front and rear side regions 6, 7 around the crotch region 8, both ends 17, 18 thereof are joined to the inside of the peripheral portion of the waist opening 9 of the front and rear side regions 6, 7, respectively. Both ends 17,
Bonding is also performed between 18 and the bonding portion 19 is biased to the front side region 6 and extends in the front and rear direction in the widthwise center of the pad 3.

FIG. 3 is a plan view when the diaper 1 of FIG. 1 is separated into a front side region 6 and a rear side region 7 in the joint zone 11 and extended in the front-back direction indicated by arrows P and Q. In the figure, front and rear side regions 6 and 7 are a waist elastic region W ₁ having a width of 10 to 50 mm defined by the waist first elastic member 13 and the waist second elastic member 14, respectively. and a waist second elastically stretchable regions W _2, stretching stress w ₁ thereof both frequency W _1, W _2, w ₂ is w ₁ ≧ w _2. Both frequency W ₁ and W ₂ and the middle area W ₃ sandwiched has a relatively weak stretchable in the direction about the presence of the waist third resilient and elastic members 16, elastic stress of the intermediate region W ₃ w ₃ is set so that w ₃ <w ₂ . Further, the respective stresses w ₁ , w ₂ , w ₃ may have a height difference between the front and rear side regions 6, 7, and in that case,
It is preferable that the stress in the front region 6 be higher than the stress in the rear region 7. In the crotch region 8, the left and right elastic stretchable members 15 extending along the rear side approximately half of the peripheral edges of the both leg openings 10 appearing as curved lines are continuous between the both openings 10, and It extends inward from the vicinity of the lower end 10B (see FIG. 1) and crosses a portion biased to the front region 6. Upper end portion 19 of the joint portion 19 of the liquid-absorbent pad 3
A is joined near the second elastic expansion / contraction region W ₂ of the pants 2. The lower end portion 19B of the joint portion 19 has the leg opening 1
It is joined to the crotch region 8 in front of the lower end 10B of 0. The joint portion 19 has the purpose of preventing the pad 3 from floating from the crotch region 8 and shifting from side to side so that the wearing of the pants 2 is not hindered. Whether it's for adults or for adults,
The width is a small part of the width of the inseam area 8, for example, 1 to 30 mm
Can be

In FIG. 4, which is an end face of the IV-IV line in FIG. 3, front and rear side regions 6 and 7 of the pants 2 are composed of an inner sheet 21 made of a hydrophilic or hydrophobic nonwoven fabric and an outer sheet 22 made of a hydrophobic nonwoven fabric. Laminated sheets that are intermittently joined to each other, and the waist circumferences 1 and 1 interposed between the inner and outer surface sheets 21 and 22
2 and 3 elastic expansion / contraction members 13, 14, 16 and the members 13, 14, 16 are in an expanded state, and these inner and outer surface sheets 2
It is joined to at least one of the inner surfaces of 1 and 22. The back sheet 22 is bent inward at the periphery of the waist opening 9 and overlaps the pad 3 from above. The crotch region 8 of the pants 2 includes a crotch region inner sheet 25 made of a hydrophilic or hydrophobic nonwoven fabric, a crotch region outer sheet 26 made of a hydrophobic nonwoven fabric,
An elastic and liquid-impervious plastic film 27 interposed between the two sheets 25, 26, and the inner and outer sheets 25, 26 in the state in which the film 27 is stretched in the front-rear direction (left-right direction in the drawing). It is joined intermittently to the inner surface of. When the diaper 1 is not worn, the film 27 contracts and many gathers occur in the crotch region 8 (see FIG. 1). The front and rear end portions 30, 31 of the crotch region 8 are the front and rear side regions 6,
7 is joined to the lower part of each second expansion / contraction region W ₂ . The liquid-absorbent pad 3 has a front end portion 17 and a joint portion 19 and a rear end portion 18 and the joint portion 19 in the front-back direction.
The space between and is free from the inner surface of the pants 2. In addition,
In FIG. 4, the adhesive H between the pants 2 and the pad 3 (see FIG. 2)
Only the members are shown, and the connecting means for the other components are not shown.

In FIG. 5, which is an end face of the line VV in FIG.
The cross section of the leg elastic elastic members 15 can be seen at the left and right side edges of the pants 2. The member 15 is joined to at least one inner surface of the crotch region inner surface sheet 25 and the film 27 in an expanded state. The pad 3 is a tissue paper 37 made of a shaped product 36 of a mixture of ground pulp and superabsorbent polymer powder.
Of the panel 35, the liquid-permeable upper surface sheet 38 covering the upper surface thereof, the liquid-impermeable lower surface sheet 39 covering the lower surface thereof and extending laterally from the side edge, and the lower surface sheet 39. Inner edge 4 while being joined to the upper surface of the lateral extension
0 is joined to the upper surface of the upper surface sheet 38, and the outer edge portion 41 is composed of the liquid impermeable side sheet 42 extending from the side edge of the lower surface sheet 39. For the lower surface sheet 39, in addition to using a liquid impermeable film, a laminated film in which a nonwoven fabric is bonded to the lower surface of the film is used, or when the liquid retaining capacity of the panel 35 is extremely excellent, A liquid non-woven fabric can be used. Side seat 42
Has elastic stretchable members 45 extending in the front-rear direction of the pad 3 on a sleeve 43 formed by folding back its outer edges, and the front and rear end portions of the member 45 are fixed to the front-rear end portions 17 and 18 of the pad 3. are doing. The joint portion 19 of the lower surface sheet 39 is joined to the upper surface of the crotch region inner surface sheet 25 of the pants 2 via the hot melt adhesive H. When the diaper 1 is assembled as shown in FIG.
Contract between both ends of the lower sheet 39 and the side sheet 4
2 and 1 are curved as an imaginary line so as to closely contact the wearer's legs and prevent lateral leakage of excrement.

In the diaper 1 thus constructed, when the diaper 1 is worn and the pad 3 comes into close contact with the wearer's inseam, the crotch region 8 extending in the front-rear direction of the pants 2 supports the pad 3 from below, Adhesion becomes more reliable. At that time, the contraction force in the front-back direction generated in the crotch region 8 acts to slide down the pants 2, but the second waist elastic region W ₂ suppresses the action, and thereby the first waist region first. It is possible to prevent the action from reaching the elastic expansion / contraction region W ₁ . Therefore, the diaper 1 does not slide down even when the pad 3 strongly adheres to the crotch of the wearer. Moreover, the second elastic expansion / contraction region W ₂ acts in cooperation with the elastic film 27 to press the front and rear ends of the liquid-absorbent panel 35 toward the body side and also to tighten the legs.

As shown, in the pants 2, the pad 3
The front and rear end portions 17 and 18 are joined in the entire width direction in the vicinity of the waist opening portion 9, and at the joint portion 19, the narrow width center in the width direction is biased to the center portion of the crotch region and is joined to the front side region 6. ing. For example, when the diaper 1 is for adults, it is not uncommon for the wearer to sit on a chair, move the buttocks while sitting, or to move the buttocks while lying in the supine position. The latter half of the area is susceptible to deformation and is easily deformed. Therefore, when the joint portion 19 is located in the latter half region, the pad 3 is joined to the crotch region 8 with a considerably small area in order to prevent the stretchability of the pants 2 from being impaired. May be damaged relatively easily and may lose its function. In addition, the pad 3 should be normally positioned on the body normally, but since the frequency of urination is greater than that of feces, the first half area of the pad 3 that receives urination is always normal. It is desirable to be located. These things
This is the main reason why the joint portion 19 is biased to the front region.

In such a pad 3, since the front and rear end portions 17 and 18 formed by the upper and lower sheets 38 and 39 extending from both front and rear ends of the panel 35 are joined in the vicinity of the waist opening 9, A panel 35 that is relatively rigid to expand and contract the opening 9
There is no hindrance. Further, the pad 3 has the front and rear end portions 1.
7, 18 and the joint portion 19 are only joined to the pants 2, and other portions are in a free state with respect to the front and rear side regions 6, 7, so that the front and rear side regions 6, 7 are stretchable in the circumferential direction. It is not disturbed by 3. The front and rear ends 17,
18 may be configured by either one of the upper and lower sheets 38, 39.

In the present invention, the liquid absorbent pad 3 may have the front and rear end portions 17 and 18 joined to the upper portion of the intermediate region W ₃ of the pants 2. Junction 19, its upper end portion 19A may extend to the bottom of the intermediate region W _3. Lower end 19
B may extend beyond the leg opening lower end portion 10B and further to the rear of the crotch region 8, but in that case, the joint portion 19 in the crotch region 8 exceeds 70% of the total length of the region 8. So that there is no The crotch region inner sheet 25 and the crotch region outer sheet 26 of the pants 2 can be replaced with a liquid-impermeable plastic film. Each of the plurality of first and second elastic elastic members 13, 14 may be replaced with a single elastic sheet, or the elastic plastic film 27 of the crotch region 8 may be replaced with a plurality of elastic members. The second and third elastic expansion / contraction members 14 and 16 can be omitted when unnecessary. An elastic elastic member can be attached to the front half as well as the rear half on the periphery of the leg opening 10.
Further, when the stretching stress of the crotch region 8 is relatively high, it is possible to omit the use of the elastic member 15 around the leg. In the pad 3, the extending portion of the lower surface sheet 39 can be appropriately narrowed, and the elastic stretchable member 45 can be omitted. In order to join the members of the pants 2 and the pad 3, in addition to using an adhesive such as a hot-melt type adhesive, a technique of welding to a heat-meltable material can be used.

[0016]

In the disposable body fluid absorbent wearing article according to the present invention, since the liquid absorbent pad on the inner side of the pants is joined to the vicinity of the waist opening of the pants and the crotch region, the pad is lifted from the crotch region. There is no risk that it will interfere with the wearing of the pants because it will not move to the left or right. After wearing, even if the pants are deformed, the normal wearing state of the pad on the body is less likely to be adversely affected, and excrement does not leak between the pad and the body. In addition, since this pad is free from the pants between the front and rear ends and the joint between them, the presence of the pad does not hinder the elasticity of the pants in the girth direction. It fits around the person's torso with a uniform force and is comfortable to wear.

[Brief description of drawings]

FIG. 1 is a perspective view of a diaper.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view of the diaper stretched back and forth.

FIG. 4 is an end view taken along line IV-IV of FIG. 3;

5 is an end view taken along line VV of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wearable article (diaper) 2 Pants 3 Pad 6 Front side area 7 Rear side area 8 Inseam area 9 Trunk opening 10 Leg opening 10A Upper end 10B Lower end 17 End 18 End 19 Joint part

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Rumi Yami 1203 Yamatai, Kinsei-cho, Kawanoe-shi, Ehime (72) Inventor Wataru Kitazawa 761-2 Wadahama, Toyohama-cho, Mitoyo-gun, Kagawa

Claims (3)

[Claims] 1. A crotch region is interposed between the front side region and the rear side region,
Disposable underpants-type body fluid consisting of pants having a waist opening and a pair of left and right leg openings, and a liquid-absorbent pad extending along the inner surface of the pants in the longitudinal direction of the front and rear side areas around the crotch area. In the absorbent wearing article, the pad is composed of a liquid-permeable upper sheet, a lower sheet, and a liquid-absorbent panel interposed between the sheets, and the upper and lower sheet portions extending from both front and rear ends of the panel. The front and rear end portions formed by at least one of the front and rear side regions are joined in the vicinity of the waist opening and the front and rear end portions are joined to the crotch region, and the joint portion in the crotch region has a width of 1 to 30 mm. The article, characterized in that it extends in the widthwise central portion of the pad, and is separated from the pants between the front and rear end portions and the central portion. 2. The article according to claim 1, wherein the joint portion in the crotch region is biased to the front side region. 3. The article according to claim 1, wherein the pants have stretchability in the waistline direction over the entire vertical width between the peripheral edge of the waistline opening and the upper ends of the leg openings.