JPH0956746A - Disposable brief-type body liquid absorptive underwear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a disposable brief-type body liquid absorptive underwear from slipping down when it is worn and improve its fitness when it is worn. SOLUTION: A brief-type diaper 1 being the example of the disposable brief- type body liquid absorptive underwear is constituted of briefs 2 and a body liquid absorptive pad 3 fitted to the inside thereof, whereas a first elastic part for girth in the vicinity of a girth opening 9 and a second elastic part for girth directly above the inside leg 8 are formed in bodice 6, 7 of the briefs 2, and an elastic inside leg part 8 lies in the front to rear direction between the bodice 6, 7.

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 bent in a U shape are joined to the inside of the crotch of disposable absorbent pants. In these pants, the auxiliary panel is in close contact with the crotch of the wearer to prevent excrement leakage. Further, Japanese Utility Model Application Laid-Open No. 5-62227 discloses a device in which both ends of a band-shaped elastic holding member extending in the longitudinal direction of the front and rear side regions are joined to the inside of a diaper. In this diaper, a separate liquid-absorbent pad can be placed on the holding member and the pad can be brought into close contact with the wearer's local area by utilizing the contracting force of the holding member.

[0003]

SUMMARY OF THE INVENTION In the above known device,
When the liquid-absorbent auxiliary panel or the liquid-absorbent pad placed on the holding member is to be strongly adhered to the crotch of the wearer, the pants or diaper that is worn has a strong force to slide it down. To prevent the pants and diapers from slipping down, it is sufficient to increase the contraction force of the elastic member around the waist so as to counteract that force, but this will naturally limit the wearer's abdomen. There is.

In view of the above, the present invention aims to prevent the worn article from easily slipping off even when the liquid absorbent pad in the crotch region strongly adheres to the crotch in a pants-type body fluid absorbent wearing article. I have an issue.

[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 pair of left and right leg openings and a stretchable direction. It is premised on a disposable pants-type bodily fluid-absorbent wearing article in which a liquid-absorbent pad extending in the longitudinal direction of the front and rear body around the crotch region is attached to the inside of the pants having the opening around the waist.

On such a premise, the crotch region below the upper ends of the leg openings of the article can be expanded and contracted in the longitudinal direction of the front and rear bodies by including an elastic member, and the waist region having a required width immediately above the crotch region. Is elastically expandable and contractible in the peripheral direction by including an elastic member, and the liquid-absorbent pad is constituted by a liquid-permeable upper sheet, a lower sheet and a liquid-absorbent panel interposed between the both sheets,
It is a feature of the present invention that the seat portions extending from both front and rear ends of the panel are fixed to the front and rear bodies respectively.

[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, has a waist opening 9 and a pair of left and right leg openings 10, and has front and rear side areas 6, 7 on both left and right sides. The inner surfaces of the side edge portions of the two overlap with each other and have zones 11 that are intermittently joined in the vertical direction. In FIG. 1, front and rear side regions 6, 7
Is a portion 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 first waist elastic member 13 extending along the periphery of the waist opening 9 and a leg opening 1.
A second waist elastic member 14 extending in the waist direction is provided immediately above the upper end 10A of 0. The crotch region 8 includes a leg elastic elastic member 15 extending along approximately the rear half of the periphery of the leg opening 10 in addition to the plastic film 27 that is stretchable in the front-rear direction as shown in FIG. The liquid-absorbent pad 3 extends in the longitudinal direction of the front and rear side regions 6 and 7 around the crotch region 8 and is joined to the front and rear side regions 6 and 7 at their both ends 17 and 18, and even between the both ends 17 and 18. The joining portion 19 is biased to the front side region 6, and the crotch region 8 is joined.
It is elongated in the front and back at the center of the width direction. The joints of the pads 3 are made by a hot melt type adhesive.

FIG. 3 shows the diaper 1 of FIG.
Front side area 6 and rear side area 7 and divide them into arrows P and Q.
It is a top view when it extends in the front-back direction shown. Figure smell
The front and rear side regions 6 and 7 are a plurality of first waist elastic portions
The member 13 and the plurality of second waist elastic members 14 are respectively provided.
1st elastic expansion / contraction area W around the waist defined by
₁And second waist elastic region W₂And have both areas
W₁, W₂Expansion stress w ₁, W₂Is w₁≧ w₂It is. Both areas W
₁, W₂Intermediate region W_ThreeIs non-stretchable around,
Or it is stretchable, and if it is stretchable, its stress w_Three
Is w_Three<W₂Is set. Also, each stress
w₁, W₂, W_ThreeHas a difference in height between the front and rear side regions 6 and 7.
In that case, the stress in the front area 6 may
It is preferable that the stress is higher than the stress in the rear region 7.
New Both leg circumferences that appear as curved lines on the left and right of the inseam area 8
Left and right bullets that extend along the rear half of the opening 10
Elastic member 15 is continuous over both openings 10.
From the vicinity of the lower ends 10B of both openings 10 (see FIG. 1).
8 inseam areas that extend inward and are biased to the front area 6
Across. Inseam area 8 is stretchable plastic
Stretchability in the front-back direction due to the presence of the film 27
It also has elasticity along the periphery of the leg opening 10 and
The elastic member 15 enhances the elasticity of the latter.

Both ends 17 and 18 of the liquid-absorbent pad 3 are joined to the first waist elastic region W ₁ . The lower end portion 19B of the joint portion 19 of the crotch region 8 to which the pad 3 is joined is located in front of the lower end 10B of the leg opening portion 10.
The function of the joint portion 19 is to prevent the pad 3 from rising from the crotch region 8 and shifting to the left and right of the crotch region 8, and whether the diaper is for infants or adults. Regardless of the width, the width may be a small part of the crotch region 8, for example, 1 to 30 mm.

The front and rear side regions 6, 7 of the underpants 2 shown in FIG. 4, which is an end view taken along the line IV-IV of FIG. 3, have an inner sheet 21 made of a hydrophilic or hydrophobic nonwoven fabric and an outer sheet made of a hydrophobic nonwoven fabric. 22 includes a laminated sheet intermittently joined to each other and first and second waist elastic members 13 and 14 interposed between the inner and outer surface sheets 21 and 22, and the members 13 and 14 in an expanded state are inner and outer surface sheets. It is joined to the inner surface of at least one of the 21, 22. The outer sheet 22 is bent inward of the pants 2 at the waist opening edge and overlaps the front and rear ends 17 and 18 of the pad 3. The crotch region 8 includes a crotch region inner surface sheet 25 made of a hydrophilic or hydrophobic nonwoven fabric, a crotch region outer surface sheet 26 made of a hydrophobic nonwoven fabric, and both sheets 25, 26.
And an inner surface of each of the crotch region inner and outer surface sheets 25, 26 in the state in which the film 27 is stretched in the front-rear direction and is formed of a liquid-impermeable and moisture-permeable plastic film 27 having elasticity in at least the front-rear direction. Are joined intermittently. 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 are joined to each other below the waist circumference second elastic region W ₂ .
In the front-back direction of the liquid-absorbent pad 3, the front end portion 17 and the joint portion 1
9 and between the rear end portion 18 and the joint portion 19 are not joined to the inner surface of the pants 2. In addition, in FIG. 4, the adhesive H (see FIG. 2) that joins the pants 2 and the pad 3 together.
Although the reference) is shown, the joining means for the other components is not shown.

At the left and right edges of the pants 2 shown in FIG. 5, which is an end view of the VV line in FIG. 3, there are leg elastic elastic members 15 interposed between the crotch region inner surface sheet 25 and the film 27. You can see the cross section. 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 includes a panel 35 formed by covering a tissue 36 with an imprint 36 of a mixture of pulverized pulp and superabsorbent polymer powder, a liquid-permeable upper sheet 38 covering the upper surface, and a lower surface thereof. A liquid-impervious lower surface sheet 39 that extends laterally from the side edge thereof and an upper surface of the laterally extending portion of the lower surface sheet 39 are joined to the inner edge portion 40 of the upper surface sheet 38. The edge portion 41 is composed of a liquid impermeable side sheet 42 extending from the side edge of the lower surface sheet 39. The lower surface sheet 39 may be liquid permeable if the liquid impermeable film 27 is present or the liquid retaining ability of the panel 35 is extremely excellent. The side seat 42 has an elastic expansion / contraction member 45 extending in the front-rear direction of the pad 3 on a sleeve 43 formed by folding back the outer edge of the side seat 42. The front and rear end portions of the member 45 have front and rear end portions 17 of the pad 3. , 18 fixed. The lower surface sheet 39 is bonded to the upper surface of the crotch region inner surface sheet 25 of the pants 2 through the hot melt adhesive H at the bonding portion 19. When the diaper 1 is assembled as shown in FIG. 1, the elastic stretchable member 45 contracts between its both ends, and the lower sheet 39 and the side sheet 42 are integrally curved as a phantom line, and It sticks around the legs to prevent side leakage of excrement.

In this diaper 1, when it is worn and the crotch region 8 extends in the front-rear direction, the extension can bring the pad 3 into close contact with the wearer's inseam. At this 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 can suppress the action. Further, thereby, it is possible to prevent the action from reaching the first elastic region W ₁ around the waist. Therefore, the diaper 1 does not slide down even if the pad 3 is worn so as to strongly adhere 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. Unlike the first elastic region W _{1 in} the vicinity of the waist opening 9, the second waist region W ₂ around the waist does not press the center of the wearer's abdomen even if the stretching stress is slightly high. Suitable for Also, due to the presence of the second stretchable region W ₂ which acts in this way, the pants 2 do not easily slide down even if the stretchable stress in the first stretchable region W ₁ is weaker than that of the conventional pants. The front and rear ends 17 and 18 of the pad 3 are joined to the first waist circumference first stretchable region W ₁ , and the front side region 6 in the widthwise central portion of the crotch region 8 in the middle region between the front end portion 17 and the rear end portion 18. Relatively narrow joint part 1 that is biased to
Since they are joined only at 9, the presence of the pad 3 does not impair the elasticity of the crotch region 8.

In the present invention, the liquid-absorbent pad 3 may have its both ends 17, 18 joined to the intermediate region W ₃ below the waist-extending first elastic region W ₁ .
Junction 19 of the crotch region 8 has its upper end portion 19A may extend to the lower portion of the intermediate region W ₃ beyond the crotch region 8.
Further, the lower end portion 19B may extend beyond the leg-opening lower end 10B and further to the vicinity of the center in the length direction of the crotch region 8. Inner pants sheet 21 and outer pants sheet 2
2 can be replaced with a liquid impermeable plastic film. Waist circumference 1st and 2nd elastic elastic members 13,
Each of 14 may be replaced with one elastic sheet member, or the elastic film 27 in the crotch region 8 may be replaced with a plurality of elastic members. Elastic elastic members can be attached to the front half as well as the rear half on the periphery of the leg opening 10. When the stretching stress in the crotch region 8 is relatively high,
The use of the elastic elastic members 15 around the legs can be omitted. In the pad 3, the widthwise extending portion of the lower surface sheet 39 can be appropriately narrowed, and the elastic stretchable member 45 can be omitted. To join each member of pants 2 and pad 3,
Besides using an adhesive such as a hot-melt adhesive, a technique of heat welding to a heat-meltable material can be used.

[0015]

EFFECT OF THE INVENTION The disposable pants-type bodily fluid absorbent wearing article according to the present invention has an elastic stretchable region in the girth direction immediately above the crotch region, in which the front-back contraction force of the crotch region shifts the pants. Since the action of lowering is suppressed, even when this article is worn so that the liquid-absorbent pad strongly adheres to the inseam of the wearer, the stretching stress in the elastic stretching region near the waist opening is reduced. No need to make it big. Such an article does not strongly press the center of the wearer's abdomen by the contraction force in the waist circumference direction, and has a good wearing feeling.

The elastic expansion and contraction region in the waist circumference direction just above the crotch region presses the front and rear end portions of the pad toward the body side, so that the fit property to the body is improved together with the contraction force.

[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 Girth opening 10 Leg opening 10A Upper end 10B Lower end 14 Girth elastic expansion / contraction member (2nd elastic expansion / contraction member) 15 Leg circumference Elastic stretchable member 27 Elastic member (stretchable film) 35 Liquid absorbing panel 38 Upper surface sheet 39 Lower surface sheet

Claims (4)

[Claims] 1. A crotch region is interposed between the front side region and the rear side region,
Disposable pants in which a liquid-absorbent pad extending in the longitudinal direction of the front and back body centering around the crotch region is attached to the inside of the pants having a pair of left and right leg openings and a waist opening that is elastic in the circumferential direction. In a body fluid absorbent wearing article, the crotch region below the upper ends of the leg openings of the article is stretchable in at least the longitudinal direction of the front and rear bodies by including an elastic member, and has a required width just above the crotch region. Since the peripheral region includes an elastic member, it is expandable and contractable in the peripheral direction thereof, and the liquid-absorbent pad is composed of a liquid-permeable upper sheet, a lower sheet and a liquid-absorbent panel interposed between these sheets. The article, wherein the sheet portions extending from both front and rear ends of the panel are fixed to the front and rear bodies, respectively. 2. An elastic member in a stretched state is continuous between the leg openings, a part of the elastic member extends along the rear half of the peripheral edge, and the rest of the elastic member has both ends. The article according to claim 1, which extends across the crotch region in the vicinity of the lower end of the opening. 3. The lower surface sheet is liquid impermeable.
Articles as described. 4. The article according to claim 1, wherein the elastic member capable of expanding and contracting at least in the longitudinal direction of the front and rear bodies in the crotch region is a liquid impermeable film.