JPH11128267A - Briefs-type disposable paper diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve fitness to the body shape of a wearer and wearing facility for the wearer. SOLUTION: One piece or plural pieces of elastic stretchable member for tightening are provided integrally with a body back sheet 20 in the crosswise direction, in at least, either of a front body part F or a back body part B of the paper diaper. Further, to set free at least one piece of the elastic stretchable member as a non-integrated piece with a paper diaper body 10, the paper diaper body 10 is fixed to the body back sheet 20 with a hot melt adhesive H at both end parts in the longitudinal direction and at the under-the-thigh part. In addition, the lateral parts of the paper diaper body 10 at the under-the- thigh part are not fixed to the body back sheet 20.

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 disposable diaper, and more particularly, to a pants-type disposable disposable diaper which fits the shape of a wearer such as an infant or a child and prevents urine leakage and stool leakage from the waist opening. About disposable diapers.

[0002]

2. Description of the Related Art Conventionally, an absorber is included between a body back sheet and a disposable diaper body at least around a leg, leaving a flap portion composed of the sheets.
At the time of use, a disposable diaper in which a fastening tape fixed to a back body is fixed to a front body so as to wrap a crotch part of a wearer is widely used.

However, in recent years, so-called pants-type disposable diapers have been developed for the purpose of facilitating detachment of the diaper, or for releasing the adult from the attaching operation using the fastening tape each time, thereby simplifying the attaching operation. Is being developed. In addition, the body shape of infants and children, who are wearers, is generally protruded and rounded in the abdomen and buttocks than adults, and the skin is sensitive. From the viewpoint of avoiding as much as possible, various proposals have been made on pants-type disposable diapers that prevent the action of excessive pressure on the abdomen of the wearer.

For example, the present inventor has proposed a disposable diaper as shown in FIG. 8 in Japanese Patent Application No. 8-291472. In this disposable diaper, a liquid-permeable top sheet, a liquid-impermeable back sheet made of polyethylene or the like, and an upper absorbent main body 13A and a lower absorbent main body 1 interposed therebetween.
A disposable diaper body 10 having an absorbent main body 13 made of 3B, a back surface back sheet 22 and a front surface back sheet 21
And a main body backsheet 20 having various elastic elastic members integrated with the main body backsheet 20 in order to impart elastic elasticity to each point and prevent leakage of urine and loose stool. It is.

In this embodiment, the liquid-impervious back sheet 12 of the disposable diaper main body 10 is fixed to the front back sheet 21 of the main body back sheet 20 by a hot melt adhesive H over substantially the entire surface. Furthermore, this is folded in the front-rear direction (folding around the line L),
The folded side edges are fixed by an ultrasonic welding method or the like, thereby forming a pants-type paper diaper.

In this case, as the above-mentioned elastic elastic members, for example, a waist elastic elastic member for sealing the opening of the disposable diaper, an abdominal elastic elastic member for preventing the abdomen and the back side from falling off, respectively, and a back side. An elastic elastic member, a leg elastic first elastic elastic member sealing the leg elastic, and a leg elastic second elastic elastic member are provided.

On the other hand, in recent pants-type disposable diapers, there is a tendency to provide an abdominal elastic elastic member and a back elastic elastic member for preventing the abdomen and the back from falling off.

[0008]

SUMMARY OF THE INVENTION However, Japanese Patent Application No. Hei.
In the 291472 invention and the recent pants-type disposable diaper provided with the abdominal elastic elastic member and the back elastic elastic member, the absorbent element is integrated with the liquid-permeable top sheet and the liquid-impermeable back sheet. Below, the abdominal elastic elastic member and the back elastic elastic member are integrated with the liquid-impermeable backsheet by a hot melt adhesive or the like.

[0009] However, the absorber or absorber element exhibits a semi-rigidity. Therefore, in the structure in which the abdominal elastic elastic member and the back elastic elastic member are fixed to the liquid-impermeable back sheet, the elasticity of the abdominal elastic elastic member and the back elastic elastic member is semi-rigid. It is restricted by the absorber or the absorber element, does not exhibit sufficient elasticity, and thus does not have a sufficient fit to the wearer, and particularly has a danger of leaking urine and stool from the waist opening surface.

[0010] Accordingly, a main object of the present invention is to provide a pants-type disposable diaper with improved fit to a wearer.

[0011]

According to a first aspect of the present invention, there is provided a paper diaper main body including a main body backsheet and a semi-rigid absorber, and a predecessor of the main body backsheet in a product state. A pants-type disposable paper diaper in which the back and the back are integrated on each side,
In at least one of the front body and the rear view, one or more elastic elastic members for tightening are integrally provided along the lateral direction with respect to the main body backsheet, and the elastic elastic member for tightening is provided. At least one of the pants-type disposable diapers is not integrated with the disposable diaper main body.

[0012] According to a second aspect of the present invention, the disposable diaper main body is provided at both ends in a longitudinal direction and a crotch part separated from the both ends.
The pants-type disposable paper diaper according to claim 1, wherein at least one of the elastic elastic members for tightening, which is fixed to the main body back sheet by a hot melt adhesive and is not integrated with the paper diaper main body, is located at the separated portion. is there.

According to a third aspect of the present invention, at least one of the elastic elastic members for tightening, which is not integrated with the main body of the disposable diaper, is at a foresight, and at least one of the elastic elastic members is
The pants-type disposable disposable diaper according to claim 1, wherein a central portion of the pants-type disposable disposable diaper has a shape bulging toward the crotch and integrated with the main body backsheet.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIGS. 1 to 4 and 6 show a first structural example of a pants-type disposable diaper according to the present invention. As shown in FIGS. 3 and 4, the disposable diaper is made of cotton-like pulp by a liquid-permeable top sheet 11 made of a nonwoven fabric and a liquid-impermeable back sheet 12 made of a polyethylene sheet. The disposable diaper main body 10 having a structure including the absorber main body 13
It is provided on the main body backsheet 20.

The absorbent main body 13 in the embodiment includes an hourglass-shaped upper absorbent main body 13A having a large area and a rectangular lower absorbent main body 13B having a slightly smaller area, which are wrapped by tissue papers 13C and 13D. Although not shown, a polymer-absorbing polymer is contained at an appropriate position, and the semi-rigidity which does not change in size as a whole but can be deformed is shown.

Conversely, the liquid-permeable top sheet 11 is provided on almost the entire surface of the absorbent main body 13 with the hot melt adhesive H (the same applies to the hot melt adhesive used for bonding to other parts). And the liquid-impermeable back sheet 12 is fixed below the absorbent main body 13 with a hot-melt adhesive H to constitute the disposable diaper body 10.

Further, a main body backsheet 20 having a large area and elasticity and elasticity is separately provided for the disposable diaper main body 10 composed of the above-mentioned components. The main body backsheet 20 has a larger outer shape than the absorbent element to form a flap portion, and has a pseudo hourglass shape as a whole. The front backsheet 21 is bonded to the back backsheet 22 with the hot melt adhesive H. It is a thing.

Side barrier cuffs 3 on both sides of the product
0 and 30 are provided. These barrier cuffs 3
Reference numerals 0 and 30 preferably include a sheet having liquid impermeability or water repellency as a constituent element.

The side barrier cuff 30 has one side of the constituent sheet interposed between the front backsheet 21 and the liquid-impermeable backsheet 12 and is fixed to the backsheet 21 by a hot-melt adhesive H. Portion is folded back to the surface side of the product while wrapping the side edge of the tissue paper 13B, the folded portion extends to the center line side of the product,
A part of the extending portion constitutes an inner edge and is folded inward, and further, the first edge is formed at the inner edge of the constituent sheet.
The erectable elastic member 31 for upright position is provided at the outer edge portion by the second
The upright elastic member 32 is fixed to the constituent sheet by a hot melt adhesive (not shown by a reference numeral).
Elastic elastic member 31 for erecting and second elastic elastic member 32 for erecting
Is fixed to the side edge of the liquid-permeable top sheet 11 by the hot melt adhesive H.

The front and rear ends of the product near the inner edge of the constituent sheet constituting the side barrier cuff 30 are fixed to the liquid-permeable top sheet 11 by a hot melt adhesive (not shown).

As a result, as shown by the imaginary line on the right side of FIG. 3, the front and rear ends of the first standing elastic elastic member 31 are restrained by the paper diaper main body 10, so that when the product is in use, the front and rear ends thereof are in the middle. Only the portion becomes a free end, and stands up toward the inside of the product with the contraction force of the first standing elastic elastic member 31 to constitute the first barrier cuff portion B1.

On the other hand, the side barrier cuffs 30
The front and rear ends of the outer edge of the sheet constituting the sheet are also folded back to the front side so that the back back sheet 22 covers the front and rear ends of the liquid-permeable top sheet 11 and the side barrier cuff 30 (details of this structure are described below). Although not shown, the folded portion is indicated by reference numeral 22a) and is fixed by the hot melt adhesive. As a result, the front and rear ends are restrained by the disposable diaper main body 10, and only the middle portion is a free end in the use state of the product. And stand up toward the outside of the product with the contraction force of the second standing elastic elastic member 32 to form the second barrier cuff portion B2.

In contrast to the example shown in FIG.
B does not extend to the second barrier cuff portion B2,
As shown in FIG. 5, a modification including an upper absorber main body 13A and a rectangular lower absorber main body 13B having a slightly smaller area is also proposed.

On the other hand, in order to fit the product to the wearer and prevent leakage of urine and stool, various elastic elastic members are mainly provided as shown in FIG. It is interposed between the back sheet 22 and is fixed to both sheets by a hot melt adhesive H.

This will be described in detail below.
And at least one of the best-looking times B,
Preferably, the various elastic members are provided at both times (in the illustrated example, both times). One or more (three in the illustrated example) made of thread rubber, for example, in the lateral direction with respect to the main body backsheet 20 and the front elastic member 41a and the elastic member 41b for tightening the rear member are disposable diapers. One or a plurality of thread rubber (for example, a total of 14 in the illustrated example) which is provided integrally with the main body 10 and which is not integrated with the disposable diaper main body 10 and extends along the lateral direction with respect to the main body backsheet 20. The front elastic elastic member 42a and the rear elastic elastic member 42b are provided.

Further, as shown in the drawing, the elastic elastic member 41b for tightening the rear view and / or the elastic elastic member 42b for the rear view is used as the elastic elastic member 43 for fitting the rear body.
Both ends may be located substantially at the leg opening, the central portion may bulge toward the back, and the central portion may be located at the buttocks. Thereby, the upper end portion of the opening of the back body B can be pulled up to the spine region slightly above the buttocks along the roundness of the lower part of the buttocks, and the absorber main body 13 at the back view B is suitably fitted to the wearer. I will let you.

The liquid-impermeable back sheet 12 of the disposable diaper main body 10 and the front back sheet 21 which is in contact with the elastically elastic member 42a and the elastically elastic member 42b when viewed from the front are at least one elastically elastic member when viewed from the front. The portion corresponding to 42a and the rear view elastic elastic member 42b is not fixed, and other portions of the liquid-impermeable backsheet 12 are fixed to the front backsheet 21 and the hot melt adhesive H. Preferably, as shown in FIG. 1, the disposable diaper main body 10 includes longitudinally opposite ends 10A, 10A.
B and the crotch 10C, the hot melt adhesive H
Is fixed to the body backsheet 20 by the crotch 10C
The side portion of the paper diaper main body 10 is not fixed to the main body back sheet 20, and the paper diaper main body 10 and the main body back sheet 20 are integrated.

In the illustrated example, four elastic waist elastic members 44 and 45 are respectively provided in the opening of the front body F and the opening of the back body B.

On the other hand, one or a plurality (three in the illustrated example) of leg elastic elastic members 46, 4 for sealing around both legs.
7 are provided. These leg elastic members 4
6, 47 have various modes as long as they seal around the leg, but in the illustrated example, the leg elastic elastic member 46 connects between both side edges of the front body F and bulges toward the lowermost inseam. The leg-elastic elastic member 47 is connected between both side edges of the back body B and bulges toward the lowermost part of the crotch, and the lowermost parts of the elastic elastic members 46 and 47 are close to each other near the center line L in the front-rear direction. It is. Elastic elastic member 46,
The lowermost portion of 47 is continuous as shown by the imaginary line in FIG. 2, and the imaginary line portion can be cut off. Further, the leg elastic elastic member may be continuous along the front and rear body direction around the leg.

In such a structure, as shown in FIG. 6, the side portions 20X, 20X of which the main body backsheet 20 is folded in the front-rear direction are joined to each other by heat welding or a hot-melt adhesive, etc. A mold paper diaper is assembled.

In such an embodiment, each elastic member 4
Some of the members 1 to 47 are fixed to the disposable diaper main body 10 and the hot melt adhesive H to form an integral structure.
Since the diaper is not integrated with the diaper, the stretchable portion increases in the entire diaper, the structure becomes easy for the wearer, and the absorber main body 13 fits the wearer suitably.

The leg elastic members 46 and 47 seal the leg opening and enhance the fit. The waist elastic members 44 and 45 prevent leakage of urine and feces around the waist.

FIG. 7 shows a second example, in which the arrangement position and shape of the elastic members in the first example are changed.

Each aspect of the various elastic members is provided by the age of the wearer and the choice of the intended function of the purchaser.

The barrier cuff in the embodiment has a structure in which a first barrier cuff B1 and a second barrier cuff B2 are formed. This structure has a function of sealing with the second barrier cuff B2 even if the urine or particularly soft stool exceeds the first barrier cuff B1.

In the disposable diaper according to the first embodiment, the main body backsheet 20 exhibits elasticity and elasticity. Therefore, when the diaper is worn, the entire body backsheet 20 is tightened against the wearer, and the main body of the absorbent body 13 is separated from the skin even if the wearer's movement is brisk with this. Without having to, it will always fit.

Although the barrier cuffs are almost entirely folded back to form a double sheet, the upright portion may be a single sheet. The number and the like of the standing elastic elastic members are appropriate. Further, the barrier cuffs can be omitted.

[0038]

As described above, according to the present invention, the stretchability can be improved, the fit to the body shape of the wearer can be improved, and the ease of attachment to the wearer can be improved. .

Each of the claims has the following specific effects.

(1) At least one of the front body and the back body is provided with one or more elastic elastic members for tightening integrally with the main body back sheet along the lateral direction, Since at least one of the elastic elastic members for tightening is not integrated with the disposable diaper body, the elastic elastic members for tightening are not restricted by the semi-rigid absorber (separated from the absorber). Then) shrink the backsheet. Therefore, the shrinkage allowance of the main body back sheet is increased over the entire width of the disposable diaper, so that the shrinkage allowance can be suitably fitted to the wearer. In addition, the circumference of the belly can be firmly fixed, and the displacement can be reliably prevented. Further, when not worn, the gathers are formed over the entire circumference of the belly, so that it is possible to appeal to the consumer with an easy impression.

(2) Claim 2 It is necessary to fix the paper diaper main body to the main body backsheet. In this case, for example, only the longitudinal front and rear ends of the paper diaper main body may be fixed to the main body backsheet.
However, considering the state of wearing, in the disposable diaper body,
If the crotch portion corresponding to the rapidly moving leg portion is free with respect to the main body backsheet, the crotch portion of the disposable diaper main body moves excessively freely, and there is a high possibility that leakage occurs in the leg portion.

According to the second aspect of the present invention, when the main body of the paper diaper is fixed to the main body back sheet at both longitudinal ends and the crotch part separated from the main body, the main body of the paper diaper moves excessively freely, and the leg-around portion is provided. Can prevent leakage.

In this case, if at least one of the elastic elastic members for tightening, which is not integrated with the paper diaper main body, is located at the separated portion, the effect described in claim 1 can be obtained.

(3) At least one of the elastic elastic members for tightening, which is not integrated with the main body of the disposable diaper, is at a foresight, and at least one of the elastic elastic members has a central portion bulging toward the crotch side. When integrated with the main body back sheet, the belly circumference is raised to the navel side, so that the leakage prevention effect is high and the slip-off can be more reliably prevented.

[Brief description of the drawings]

FIG. 1 is a development view of a product in a first embodiment.

FIG. 2 is a developed view showing a relationship with an absorbing element.

FIG. 3 is a view taken along line 4-4 in FIG. 2;

FIG. 4 is a view taken along line 5-5 in FIG. 2;

FIG. 5 is a view corresponding to an arrow line 4-4 in FIG. 2 in another embodiment.

FIG. 6 is a development view of a product in the second embodiment.

FIG. 7 is a perspective view showing a product state of the pants-type disposable diaper according to the present invention.

FIG. 8 is a development view of a conventional pants-type paper diaper.

[Explanation of symbols]

10: disposable diaper body, 11: liquid-permeable topsheet, 12
... Liquid-permeable backsheet, 13 ... Absorbent, 20 ... Main body backsheet, 21 ... Surface backsheet, 22 Backside backsheet, 30 ... Side barrier cuff, 31 ... First standing elastic elastic member, 32 ... Second Elastic elastic member for standing, 4
1a: Elastic elastic member for tightening in front view, 41b: Elastic elastic member for tightening in rear view, 42a: Elastic elastic member in front body, 42b: Elastic elastic member in rear view, 44, 45 ... Elastic elastic member around waist, 46, 47 ... Leg elastic elastic member, F ...
Front body, B: Back body, H: Hot melt adhesive.

Claims (3)

[Claims] An underpants type having a main body backsheet and a disposable diaper main body including a semi-rigid absorber, wherein a front body and a rear body of the main body backsheet are integrated in a side part thereof in a product state. A disposable disposable diaper, wherein at least one of the front body and the rear view is integrally provided with one or a plurality of fastening elastic elastic members along the lateral direction with respect to the main body backsheet; A pants-type disposable disposable diaper, wherein at least one of the elastic elastic members for fastening is not integrated with the disposable diaper main body. 2. The paper diaper main body is fixed to the main body backsheet by a hot melt adhesive at both ends in a longitudinal direction and a crotch part separated from the both ends in a longitudinal direction, and the elastic elasticity for tightening is not integrated with the paper diaper main body. The pants-type disposable paper diaper according to claim 1, wherein at least one of the members is located at the separated portion. 3. At least one of the elastic elastic members for tightening, which is not integrated with the main body of the disposable diaper, is at the foresight, and at least one of the elastic elastic members has a central portion bulging to the crotch side and the main body backsheet. The pants-type disposable paper diaper according to claim 1, which is integrated.