JP2682969B2 - Disposable diapers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper,
The present invention relates to an item that is worn by assembling in a pants shape by fastening a waistline when wearing.

[0002]

2. Description of the Related Art Conventionally, as a disposable diaper of this type, for example, as described in Japanese Utility Model Laid-Open No. 6-5615, an absorbent panel is interposed between a top sheet and a back sheet to form a back waist. Elastic members that expand and contract in the respective directions are attached to the surrounding portion and both side leg portions, respectively, and horizontally long rectangular fastening pieces are attached to both ends of the back waistline portion, and the attachment portions of the fastening pieces on both sides and the Inner sides of the elastic member of the back waist and the elastic members of both leg parts that connect both ends of the elastic member of the back waist and the one end of the elastic members of the both leg parts. There is known a structure in which the absorption panel is interposed at a position separated from each other.

[0003]

In the structure described in the above publication, since the rectangular fastening pieces which are long in the direction of pulling the back waistline are attached to both ends of the back waistline, both side parts are worn when worn. When the fastening piece is pulled, stress concentrates in the pulling direction of the fastening piece, and the elastic members on both leg parts tend to be insufficiently stretched. There are things you can't do. Also,
Since the absorbent panel is interposed apart from the elastic member of the back waistline, when the back waistline is pulled by the fastening piece, the upper end of the back waistline is the inner surface. Bending toward the seat side, the back sheet made of synthetic resin such as polyethylene on the back side of the back waistline is in contact with the wearer, and if the wearer wears it as it is, , Easy to get rid of,
There is a problem.

The present invention has been made in view of the above point, and when the waist bands at both ends are respectively pulled during wearing, the tensile stress is dispersed in the first tension portion and the second tension portion. , The first tension portion can sufficiently extend the waist gathers, and the second tension portion can sufficiently extend the leg gathers, and the dorsal waist region and both leg parts can be extended to the wearer's dorsal waist region. It is possible to prevent leakage of excrement by making it close around the legs and around both legs, and when pulling the waist bands at both ends, the upper end of the back waistline bends to the surface sheet side of the wearer. It is an object of the present invention to provide a disposable diaper that can prevent the back sheet from coming into contact with the wearer and can prevent the wearer from getting rash or peeled by the back sheet. Than it is.

[0005]

A disposable diaper according to claim 1, wherein an absorbent body is arranged between a top sheet and a back sheet, and a back waistline part, both leg parts and a front waistline part are provided. Forming a diaper body having leg gathers on both sides of the diaper body with elastic materials that can expand and contract in the leg circumference direction, and the elastic material of the leg gathers on both sides is used for the back waist. Waist gathers are formed on both sides of the back waistline by elastic material extensions extending from both sides of the waistline toward the middle part, and waistbands are formed on both ends of the back waistline. respectively attached, waistband of the both ends, the vertical direction of the mounting portion attached to the continuous portion between the both end portions and the opposite sides of the elastic member and the elastic member extension of the dorsal waist part, the upper part of the mounting portion To
A first tension member in the lateral direction to pull the back-side waist portion formed continuously to the mounting portion around the waist direction, the attachment
A second pulling portion in the up-down direction, which is formed in the lower part of the portion and is continuous with the mounting portion, and pulls the both-side leg-surrounding portion in the leg-surrounding direction.
When this outer end of the first tension member and the second tension member
A fastening portion formed continuously with the first and second tension portions ,
Formed between the first tension portion and the second tension portion
The tensile stress of the fastening portion is set to be the same as that of the first tension portion and the second tension portion.
And a void space to be dispersed in the tensile portion of the.

[0006] The disposable diaper according to claim 2, in the disposable diaper according to claim 1, polymerized at both end corner portions positioned intermediate portion of both sides waist gathers the dorsal waist part of the absorbent body The middle part of the waist gathers on both sides
Is attached to both corners of the absorber .

[0007]

In the disposable diaper according to the first aspect of the present invention, the back waistline portion is in contact with the wearer's back waistline and the front waistline is in contact with the wearer's front waistline when worn. Then, the both end portions of the dorsal waist part of the waistband
When each of the fastening parts is pulled, the tensile stress of both fastening parts is distributed in the first tension part and the second tension part in the void, and the waist gathers on both sides are gathered in the first tension part. Is sufficiently extended, and at the same time, the leg gathers on both sides are sufficiently extended at the second pulling portion. Then, by tightening the fastening parts of both waist bands to the back part of the front waistline part, the back waistline part and both leg parts are closely attached to the wearer's back waistline and both leg parts, respectively. To be done.

In the disposable diaper according to the second aspect of the present invention, when wearing, the waist bands at both ends of the back waistline are tightened.
Pulling wearing part, respectively, although waist gather on both sides of the dorsal waist part is fully extended, the both end corner portions positioned intermediate portion of the both sides of the waist gathers the dorsal waist part of the absorbent body In the waist gathers on both sides
Since the intermediate portion is attached to both end corners of the absorber, the upper end portion of the back waistline at the both end corners located at the back waistline of the absorber is the surface sheet on the wearer side. Bending to the side is prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a diaper body, and the diaper body 1 is provided between a water-permeable topsheet 2a and a hydrophobic topsheet 2b and a backsheet 3 at both ends of the topsheet 2a. The absorbent body 4 is arranged to have a back waistline portion 5, side leg circumference portions 6 and a front waistline portion 7. The water-permeable topsheet 2a is made of a liquid-permeable material such as synthetic fiber that allows excrement to pass therethrough. The hydrophobic top sheet 2b and the back sheet 3 are made of a liquid impermeable material such as polyethylene that prevents leakage of excrement.

The topsheet 2b is formed as a bag 8, and the left and right ends of the bag 8 have outer ends on the water-permeable topsheet 2a together with the outer end of the backsheet 3, respectively. They are integrally attached by adhesion or fusion, and the upper and lower ends of their inner ends are integrally attached to the back waistline portion 5 and the front waistline portion 7 by adhesion or fusion, respectively. A stretchable elastic material 10 such as rubber is adhered to the free end portion 9 between the upper and lower attachment portions. A bag portion 11 for preventing lateral leakage of excrement is formed between the left and right bags 8 made of the hydrophobic surface sheet 2b and the left and right portions of the surface sheet 2a.

Further, the absorber 4 is the surface sheet 2a.
The wide parts 4a and 4b and the both side leg parts 6 in which the parts arranged on the back waistline part 5 and the front waistline part 7 are formed wide in the left-right direction with an absorbent material that absorbs excrement that has permeated from It is formed in a form having a narrow portion 4c in which a portion to be arranged is formed narrow. The absorber 4 is disposed between the topsheets 2a, 2b and the backsheet 3 and is integrally attached to the backsheet 3 by adhesion, fusion or the like.

The back waistline portion 5 and the front waistline portion 7 are formed wide in the left-right direction.
Also, the length is such that it can be wrapped around the waist of the wearer at the front waistline portion 7.

Next, leg gathers 13 are formed on the both leg-surrounding portions 6 by a plurality of elastic members 12 capable of expanding and contracting in the leg-surrounding direction, and the leg gathers 13 on both sides are formed.
One end of each of the plurality of elastic members 12 extends from both sides of the back waistline portion 5 toward the upper end of the intermediate portion, and the elastic member extension portion 14 allows the back waistline portion 5 to Waist gathers 15 are formed on both sides of each. You
That is, as shown in FIG. 1, waist gathers 15 on both sides
The middle part of this waist gather 15 is the back waist of the absorber 4.
The corners of both ends located in the circumference 5 are superposed and the wafers on both sides are superposed.
The intermediate portion of the storage gather 15 is attached to the both corners of the absorber 4.
Wear, and extend toward the upper end of this dorsal waistline 5 respectively.
It is formed by the existing elastic material extension portion 14.

The other ends of the plurality of elastic members 12 of the leg gathers 13 on both sides extend from both sides of the front waistline portion 7 toward the upper end of the intermediate portion, and the elastic members Waist gathers 17 are formed on both sides of the front waistline portion 7 at the extension portions 16, respectively. Also,
An adhesive tape 18 having an adhesive surface on the outer surface is integrally attached to the back surface portion of the front waistline portion 7, that is, a position corresponding to the front waistline portion 7 of the backsheet 3. Thus, the plurality of elastic members 12 and the elastic member extensions 14 and 16 are interposed between the absorber 4 and the back sheet 3.

Next, waist bands 19 are attached to both ends of the back waistline portion 5, respectively. The waist bands 19 at both ends are attached to both ends of the back waistline portion 5 and to a curved continuous portion 20 of the plurality of elastic members 12 and elastic member extensions 14 on both sides in the vertical direction. 21 , a first pulling portion 22 in the left-right direction that is formed on the upper portion of the attachment portion 21 and is continuous with the attachment portion 21, and pulls the back waistline portion 5 in the hipline direction ; At the bottom of the mounting part 21
A second tension member 23 in the vertical direction continuously formed pulling the both side leg portions 6 in the leg-direction, said first tension member
22 and the first and second pull the outer end of the second tension member 23
It is <br/> has a fastening portion 24 formed continuously to Zhang portions 22 and 23, the.

The waist bands 19 at both ends are
The fastening portion 24 and the first tension portion 22 and the second tension portion 23.
The tensile stress of the fastening portion 24 formed between
It has a triangular void 25 to be dispersed in the pulling portion 22 and the second pulling portion 23 . An adhesive tape 26 having an adhesive surface that adheres to the adhesive surface of the surface of the adhesive tape 18 so as to be able to come in and out of contact is integrally attached to the fastening portions 24 of the waist bands 19 at both ends. The waist bands 19 at both ends are formed in a substantially V shape by the fastening portion 24, the first tension portion 22 and the second tension portion 23.

Next, an example of handling the above embodiment will be described.

When wearing, the back waistline portion 5 is brought into contact with the wearer's back waistline portion, and the front waistline portion 7 is brought into contact with the wearer's front waistline. Next, when the fastening portions 24 of the waist band 19 at both ends of the back waistline portion 5 are pulled toward the waistline direction, the tensile stress of the both fastening portions 24 causes the respective first tension portions 22 to be pulled. And the stress is dispersed in the second tension portion 23, the waist gathers 15 on both sides of the back waistline portion 5 are sufficiently extended in the first tension portion 22, and at the second tension portion 23. The leg gathers 13 of the leg parts 6 on both sides are sufficiently extended.

Then, the adhesive surface of the adhesive tape 26 of the fastening portion 24 of both waist bands 19 is changed to the adhesive tape 18 of the front waistline portion 7.
The back waistline part 5, the front waistline part 7 and the both leg parts 6 are attached to the wearer's waist part and both leg parts by closely adhering to the adhesive surface of the wearer. It

Thus, the excrement of the wearer is absorbed and retained by the absorbent body 4 from the water-permeable surface sheet 2a made of a liquid-permeable material. Since the covered backsheet 3 is made of a liquid impermeable material, leakage of excrement from the backsheet 3 is prevented.

Further, the topsheet 2a is formed with a bag portion 11 having a hydrophobic topsheet 2b whose inner ends facing each other are free ends 9 at both ends in the left-right direction, and the waist gathers on both sides are formed. Prevents leakage of excrement from the waist and both legs of the wearer by closing the waist and both legs of the wearer in a closed state with 15, 17 and leg gathers 13 on both sides. To be done.

Further, when the fastening portions 24 of the waist band 19 on both sides of the back waistline portion 5 are pulled in wearing , the waist gathers 15 on both sides of the back waistline portion 5 are sufficiently extended. but, waist gather 15 of the both sides
Both end corner portions located on the back side waist portion 5 of the absorbent body 4 by being polymerized form is attached integrally to, Sunawa
As shown in Fig. 1, the waist gathers 15 on both sides
The waist of the absorbent body 4 around the middle of the waist gather 15
Waist on both sides by overlapping at both corners located in part 5
Attach the middle part of the gather 15 to both corners of the absorber 4.
As a result, even if the waist gathers 15 on both sides of the back waistline portion 5 are sufficiently extended, the back waistline is formed at both end corners located in the back waistline portion 5 of the absorbent body 4. The upper end of the portion 5 is prevented from bending toward the wearer side surface sheets 2a, 2b.

Therefore, the back sheet 3 made of a synthetic resin such as polyethylene on the surface of the back waistline 5 does not come into contact with the waist of the wearer or the wearer does not wear it as it is. The topsheets 2a and 2b are prevented from causing irritation or peeling of the waist of the wearer.

Next, in the above embodiment, the back waistline portion 5
One end portion of the plurality of elastic material extension portions 14 having waist gathers 15 formed on both sides of the back end portion is along the extension line of the opposite free end portions 9 of the bag portion 11 extending in the vertical direction, and the upper end of the back waistline portion 5 The elastic material extension part of the multiple lines on both sides
The case of forming a predetermined wide non-stretchable portion having no elastic material extension portion 14 between the one end portions of 14 has been described, but the present invention is not limited to this, and, for example, as shown in FIG. One end of each of the formed plural elastic material extension portions 14 approaches the inside of each other from the extension lines of the free end portions 9 of the bag portion 11 facing each other in the vertical direction and extends to the upper end portion of the back waistline portion 5, respectively. A narrow non-stretchable portion having no elastic material extension portion 14 may be formed between one ends of the plurality of elastic material extension portions 14 on both sides.

With this construction, the waist gathers 15 on both sides are stretched during wearing, so that the back waistline portion 5 is attached to the wearer's waist portion in a state in which the waist waist portion 15 is in closer contact with the wearer's waist portion. Then, the excrement is surely prevented from leaking from the waist of the wearer.

Next, in each of the above-described embodiments, the waist gathers 15 of the back waistline portion 5, the waist gathers 17 of the front waistline portion 7 and the leg gathers 13 of the side leg portions 6 are a series of a plurality of elastic members. By forming at 12, the waist gathers 15 of the back waistline part 5, the waist gathers 17 of the front waistline part 7 and the leg gathers 13 of the both leg parts 6 are easily formed in one step. In addition, waist gathers 15 continuous to the leg gathers 13 are provided on both sides of the back waistline portion 5.
By forming the, the step of separately forming the waist gathers 15 on the back waistline portion 5 is omitted.

[0028]

According to the invention of claim 1, when the waist band fastening portions at both ends of the back waistline portion are respectively pulled during wearing , the first pulling portion and the second pulling portion are provided. The tensile stress of the fastening part is dispersed, and the waist gathers on both sides of the back waistline are fully extended at the first tension part.
It is Rukoto is, the leg gathers on each side leg portion can Rukoto is fully extended in the second tension part, thus, the back side of the wearer and the back-side waist portion and both leg portions It can be easily mounted in a state in which the waist and the legs around both sides are in close contact with each other, and excrement can be prevented from leaking from around the waist and both legs around the wearer's back.

According to the invention of claim 2, when pulled fastening portion of the waistband end portions of the dorsal waist part, intake
It is possible to prevent the upper end portion of the back waistline from bending at the corners of both ends of the container toward the surface sheet side on the wearer side, preventing the back sheet from coming into contact with the wearer, and the wearer back side. It is possible to reliably prevent the seat from getting rash or peeling.

[Brief description of the drawings]

FIG. 1 is a development view of a disposable diaper showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a state of mounting the same.

FIG. 3 is a development view of a disposable diaper showing another embodiment.

[Explanation of symbols]

1 Diaper body 2a, 2b Top sheet 3 Back sheet 4 Absorber 5 Back waist part 6 Both side leg parts 7 Front waist part 12 Elastic material 13 Leg gather 14 Elastic material extension portion 15 Waist gather 19 Waist band 20 Continuous portion 21 mounting portion 22 first tension member 23 and the second tension member 24 fastening portion 25 cavity

Claims (2)

(57) [Claims] 1. An absorber is disposed between a top sheet and a back sheet to form a diaper body having a back waistline portion, both side leg portions and a front waistline portion, and the both sides of the diaper body. Leg gathers are formed on the leg parts with elastic materials that can expand and contract in the leg direction, and the elastic members of the leg gathers on both sides of the leg gathers extend from both sides of the back waist part toward the middle part. The waist gathers are formed on both sides of the back waistline by the elastic member extended portions, and the waistbands are attached to both ends of the back waistline, respectively. and the vertical direction of the mounting portion attached to the continuous portion between the both end portions and the opposite sides of the elastic member and the elastic member extension of the waist portion, the upper portion of the mounting portion
In a first tension member in the lateral direction to pull the back-side waist portion formed continuously to the mounting portion around the waist direction, the preparative
A second pulling portion in the up-down direction, which is formed in the lower part of the attaching portion and is continuous with this attaching portion, and pulls the both-side leg-surrounding portion in the leg-surrounding direction.
When this outer end of the first tension member and the second tension member
A fastening portion formed continuously with the first and second tension portions ,
Formed between the first tension portion and the second tension portion
The tensile stress of the fastening portion is set to be the same as that of the first tension portion and the second tension portion.
A disposable diaper , which has: 2. A polymerized both end corner portions positioned intermediate portion of each side of the waist gathers the dorsal waist part of the absorbent body Both
The middle part of the side waist gather at both end corners of the absorber
The disposable diaper according to claim 1, wherein the disposable diaper is attached to the.