JPH07227403A - Disposable diaper - Google Patents

Abstract

PURPOSE: To provide a diaper of improved fitness, wear stability and setting easiness by concentrating the pulling force of a fastener tape attached on a disposable diaper on a desired site such as waist and legs. CONSTITUTION: The side edge of an unstretchable back sheet is provided with a notch 11 which separates the side edge into side edge parts 74 and 75, and with fastener tapes 5 and 6 attached on side edge parts 74 and 75. When the pulling force by fastener tapes 5 and 6 is applied on side edges 74 and 75 of the unstretchable back sheet 3, the notch 11 positioned between the side edge parts restrict diffusing of these forces on the back sheet 3. Thus, the pulling force can be concentrated on a desired site.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved disposable diaper for infants, adults or incontinent persons.

[0002]

2. Description of the Related Art A typical form of a conventional disposable diaper is as follows. That is, regardless of whether it is for infants or adults, it mainly consists of a liquid permeable material and is placed on the side in contact with the skin of the wearer, and an outer cover of a disposable diaper made of a liquid impermeable material. The back sheet and the absorbent core capable of absorbing or holding the liquid disposed between the two sheets. In addition to such a configuration, in an assembly-type disposable diaper, after applying the diaper to a required site, a part corresponding to the wearer's back side and a part corresponding to the ventral side are joined and fixed to hold the wearer in a worn state. Some are equipped with fastener tape.

Such an assembly-type disposable diaper is assembled after being worn by the wearer, as compared with a so-called pants-type diaper which is already pre-assembled before wearing, and thus is easy to wear to the wearer. Must be provided. Further, since the diaper is assembled after being applied, it must be devised so as to have a good fit when worn. The fit in this case is to provide comfort to the wearer, and also from the time of attachment to the time of removal regardless of the activity state of the wearer, change in posture when the wearer is sleeping, etc. It must provide a sense of security that there is no risk of misalignment of the diaper due to the assembled diaper during the wearing period.
Such fit must provide sufficient sealing around the waist and legs to effectively contain waste in the diaper and reduce the risk of leakage. .

It is well known that various improvements have been made to the fit property of such an assembled disposable diaper from the past, and various proposals have been made.

For example, Japanese Patent Laid-Open No. 61-244346,
Those disclosed in JP-A-61-244347 can be mentioned.

The diaper disclosed herein has fastener tapes attached at two locations along one side edge of the diaper, thereby facilitating attachment of these free ends to the front region of the diaper and the attachment state. Stable and reliable.

However, the diaper thus constructed has the following drawbacks when worn. In other words, the pulling force of each fastener tape cannot be sufficiently concentrated on the required part of the diaper, and when the pulling force of each fastener tape is applied to the side edge of the diaper, the force is dispersed over a wide range. Of. Therefore, even if each side edge is provided with two fastener tapes, it is not possible to concentrate the force sufficiently to a required portion, which causes leakage around the waist and legs.

Further, the space between the fastener tapes cannot be wider than the physical space of the side edge of the diaper to which they are attached, which makes the wearing work of the diaper difficult and difficult. It was the cause of a secure fit.

Still another technique is disclosed in Japanese Patent Laid-Open No. 59-59
-71401 gazette and Unexamined-Japanese-Patent No. 63-288201 are mentioned. These are not invented to improve the fitting property of a disposable diaper directly, but the above-mentioned JP-A-61-244346 and JP-A-61-2.
Similar to Japanese Patent No. 44347, two fastener tapes are attached to one side edge of the diaper, respectively. However, in the case of this diaper, the diaper has a diaper body having substantially the same configuration as each of the above-mentioned prior arts, and a fastening strip attached to both side edges on the back side of the diaper body. Each fastener tape is attached to.

Even if such a fastening strip is provided, no particular improvement in the above-mentioned drawbacks can be seen, and therefore, there is no change in that it has the same drawbacks as described above.

Further, although not directly related to the present invention, Japanese Patent Laid-Open No. 4-35663 can be cited as an interesting prior art.

The technique disclosed in this publication does not relate to a so-called assembled diaper, but relates to a so-called pants-type diaper pre-assembled before wearing, which is suitable for training to promote separation of diapers for infants. Is.

Since the technique disclosed in this publication relates to the pants-type diaper as described above, one of the side flap pieces of the diaper divided into at least two is previously attached to the other side on the ventral side or the back side. Since the technique of joining and fixing to the flap is disclosed, there is no mention of an assembled disposable diaper. Then, this publication discloses a technique of dividing only the stretchable side flap portion attached to a back sheet which is usually formed of a non-stretchable material.

Since the notch for dividing the side flap is provided only in the elastic side flap portion, the side edge of the backseat to which each separated elastic side flap portion is attached has a side edge. , Straight side edges that are not separated. This is substantially the same as the side edge of the conventional backsheet described above, and even if the pulling force of each of the separated stretchable side flap portions is applied to the side edge of the backsheet which is separately attached. , Its force is freely spread over the entire backsheet from its straight mounting side edges. For this reason, even if each of the separated elastic side flap portions can exert its elasticity independently, each pulling force is eventually dispersed in the backsheet portion to which it is connected, and the tensile force is concentrated in a necessary portion. I can't. The resulting drawbacks are no different from those mentioned above.

Therefore, an object of the present invention is to provide a disposable diaper in which the pulling force by the fastener tape can be sufficiently concentrated, and as a result, the fitting property can be sufficiently improved. Further, the present invention also provides a disposable diaper that can be easily attached when the abdominal side and the back side are joined and fixed.

[0016]

DISCLOSURE OF THE INVENTION The disposable diaper of the present invention comprises a liquid-permeable topsheet, a liquid-impermeable and non-stretchable backsheet, and an absorbent core arranged between these sheets. In the disposable diaper, at least one side edge of the backsheet is provided with a notch that separates the one side edge into each side edge, and each side edge of the one side edge of the separated backsheet is respectively separated. A fastening means for connecting the back side and the abdomen side of the diaper is connected.

[0017]

Since the present invention has the above-mentioned structure, the pulling force applied to each side edge portion of the non-stretchable back sheet separated by the cut portion is dispersed due to the presence of the cut portion. Therefore, it is possible to concentrate the pulling force applied to each side edge portion to a required portion.

[0018]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a disposable diaper showing an embodiment of the present invention, with the wearer side surface of the diaper 1 facing upward and a part thereof being cut. FIG. 2 is an exploded perspective view of the disposable diaper of the embodiment shown in FIG.

Referring to FIGS. 1 and 2, the diaper 1 is mainly sandwiched between a top sheet 2 made of a liquid permeable material, a back sheet 3 made of a liquid impermeable material, and both sheets. And an absorbent core 4 made of a material capable of absorbing or holding a liquid existing in the above. In addition to such a configuration, a first fastener tape 5 and a second fastener tape 6 for holding the diaper 1 in an assembled state
A leg elastic member 7 for improving the sealing property around the leg when the diaper 1 is worn, a waist elastic member 90 for improving the adhesion around the waist, and the center of the diaper 1 when the diaper 1 is worn. Barrier leg cuffs 95 for preventing leakage of excreted excrement are provided near the respective portions.

Since the leg elastic members 7 are provided on the diaper 1, the diaper 1 in a normal state (a natural state that is not in a worn state) forms a gather because the elastic members are in a relaxed state. However, FIG. 1 shows a top view in a state in which it is extended.

The overall shape of the diaper 1 is substantially hourglass-shaped, and mainly has three parts: a back waist panel 8, a crotch panel 9, and an abdominal waist panel 10. The back waist panel 8 and the abdominal waist panel 9 have almost the same lateral width (width in the horizontal direction in FIG. 1), but the crotch panel 9 is narrower than both waist panels 8, 9. It is designed so that the wearer does not feel cramped around the legs. If such tightness can be solved by another method, it is not necessary to form only the crotch panel 9 with a particularly narrow width, and the entire diaper 1 may have a rectangular shape without distinction between the waist and the crotch. Good. Further, the back waist panel 8 and the abdominal waist panel 10 do not necessarily have to have substantially the same lateral width, and the Japanese Patent Application Laid-Open No. 59-71 described in the prior art section of the present application.
It may be a diaper having an outer shape, that is, a substantially T-shape as disclosed in JP-A-401 and JP-A-63-288201. The outer shape of the diaper 1 can take various forms as needed.

The above-mentioned first and second fastener tapes 5 and 6 are attached to both side edges 70 of the back waist panel 8 of the diaper 1, and the side portions of the diaper 1 are almost in the middle thereof. A notch 11 is provided which is oriented at a right angle. The cut portion 11 will be described in detail later.

The top sheet 2 made of a liquid-permeable material has a rectangular shape as shown in FIG. 2, and when this is made to correspond to the back sheet 3, it is indicated by a chain line in FIG. The size is as shown. That is, the length of the topsheet 2 in the vertical direction (the length in the vertical direction in FIG. 1) is substantially the same as the length of the backsheet 3 in the vertical direction. The lateral length (horizontal length in FIG. 1) is slightly shorter than the distance between the leg elastic members 7 on both side edges. However, the size of the top sheet 2 is not particularly limited to this.

The preferred topsheet 2 is conformal, pleasant to the touch and non-irritating to the wearer's skin. The topsheet 2 prevents the absorbent core 4 and the liquid retained therein from contacting the skin of the wearer. The top sheet 2 is liquid-permeable and can easily permeate liquid, especially urine. In this case, the term "topsheet" means a liquid-permeable surface that comes into contact with the skin of the wearer when the diaper 1 is worn, and prevents the core 4 from coming into contact with the skin of the wearer.

A preferred topsheet 2 is, for example, woven cloth,
It can be non-woven, spunbonded, carded, or the like. The preferred topsheet 2 is one that has been carded and heat-bonded by a method known in the fabric industry. Preferably, the topsheet 2 has a basis weight of about 18 to about 25 grams per square meter, a minimum dry tensile strength of at least about 400 grams per centimeter in the machine direction, and a wetness of at least about 55 grams per centimeter in the cross machine direction. With tensile strength.

In any case, it is preferable that the wearer gives a soft feeling to the skin when worn by the wearer, and it is preferable that the material is a material which can easily permeate liquid and the like and which is hard to return.

The liquid-impermeable back sheet 3 has an hourglass shape which matches the overall shape of the diaper 1 as shown in FIG. Therefore, as shown in FIG. 2, the backsheet 3 has backsheet side panels 12 and 13 in the region of the back waist panel 8 and the region of the abdominal waist panel 10, respectively. And, in the back seat side panel 12,
The notch 20 is provided by cutting from both side edges 71 of the back sheet 3 toward the other side edge. This notch 20 is a barrier leg cuff 95 described later.
Notch 24 provided in the back waist flap 21 of the
In cooperation with the above, the cut portion 11 cut substantially from both side edges 70 of the diaper 1 is configured.

As a preferable material for the back sheet, the back sheet 3 is impermeable to liquid such as urine, and the liquid absorbed and retained in the absorbent core 4 contacts the diaper 1, underwear, Prevents clothing, sheets and other objects from getting wet. In this case, the term "backsheet" means
It means a barrier that is arranged outside the core 4 when the diaper is worn, and stores the absorbed liquid inside the diaper 1. Preferably the backsheet 3 has a thickness of about 0.01
~ About 0.051 (0.0005-0.002 inch)
It is a polyolefin film. A polyethylene film is particularly preferred, a suitable film is the trade name Filo P18-850 from Kropei, Cincinnati, Ohio.
It is commercially available at. If desired, the backsheet 3 may be embossed and / or matte finished to produce a cloth-like appearance, or provided with passages for the escape of water vapor.

As shown in FIG. 1, the absorbent core 4 has a substantially hourglass shape in a top view. The absorbent core 4 is substantially 2
The upper (wearer side) main core 4a is made up of layered cores and forms an hourglass shape (see also FIG. 2).

The absorbent "core" can be any means of absorbing and retaining excrement. Further, the main core 4a is generally compressible, conforms to the shape, and does not irritate the skin of the wearer. A preferred core has first and second opposing surfaces and can be further surrounded by one or more tissue layers if desired. The tissue layer improves the tensile strength of the core assembly and reduces the tendency for the core to crack or clump when wet. The tissue layer also improves the lateral osmosis of the liquid, thereby distributing the absorbed liquid evenly throughout the core. 13 (0.5
A tissue having a basis weight of about 16 grams per square meter (10 pounds / 300 square feet) with an air permeability of about 30 cubic meters per square meter per minute (100 cubic feet per minute per square foot) is satisfactory. Act on. The absorbent core can be comprised of a variety of commonly used materials such as ground wood pulp, commonly referred to as airfelt.

Further, the sub core 4b has a substantially rectangular shape in a top view, and therefore, in a region corresponding to the crotch panel 9 of the diaper 1, it has a width substantially equal to that of the main core 4a (III-III in FIG. 1). (See FIG. 3, which is a section)
The width of the back waist panel 8 and the abdominal waist panel 10 is narrower than that of the main core 4a (see FIG. 4, which is a cross section taken along the line IV-IV in FIG. 1). This sub core 4b is the main core 4
Although it is intended to assist the liquid absorption and holding functions of a, the liquid holding function is mainly emphasized. Therefore, it can be made of the same material as the main core 4a, but its function can be enhanced by further containing a polymer gelling material.

Suitable polymeric gelling materials may be inorganic compounds such as silica gel or organic compounds such as cross-linked polymers. Examples of polymer gelling agents include polyacrylamide, polyvinyl alcohol, ethylene-anidland maleate, propyl hydroxy cellulose, carboxyl carboxyl and methyl resin.
Examples are cellulose, morpholinone, vinyl-sulfonic acid polymers or copolymers, polyacrylics, polyacrylamides, polyvinyl-viridyne, and the like.

Of course, the main core 4a can also contain a polymer gelling material, and each core 4a,
The content of the polymer gelling material contained in 4b can be changed appropriately. The core 4 does not have to have two layers as a whole, and may have one layer or three or more layers. Further, in the case of multiple layers, the shape of each core can be any shape.

Next, as shown in FIG. 1, the leg elastic members 7 are arranged in the region of the crotch panel 9 and on both side edges thereof. Although four elastic members are arranged on each side edge, the number of elastic members is not limited to four, and an arbitrary number can be used as necessary. The leg elastic members 7 include the side edges 14 of the crotch panel 9 and the side edges 15 of the absorbent core 4.
And the backsheet 3 as shown in FIG.
It is sandwiched and fixed by the crotch flap portion 22 of the barrier leg cuff 95 described later in detail. Further, as shown in FIG. 1, the length of the leg elastic member is preferably such that a part of the elastic member is applied to the absorbent core 4 when the leg elastic member is attached in a stretched state so as to give an appropriate tension.

Examples of preferable material for the leg elastic member 7 include natural rubber, various elastic films such as cretone, ethylene, propylene monomer and polyurethane. As shown in FIG. 1, the waist elastic member 90 is arranged in a region sandwiched by the end edge 91 of the diaper 1 and the end edge of the absorbent core 4. Then, the back sheet 3 and the top sheet 2 and a part of the barrier leg cuffs 95 are sandwiched and fixed.

The waist elastic member 90 is a well-known material such as Kraton, natural rubber, ethylene propylene-dimonomers; elastic scrim; elastic foam; heat-shrinkable elastic material such as ethylene vinyl acetate copolymer, polyethylene-polyolefin block. Copolymer,
A mixture thereof such as a mixture of ethylene polymer rubber and ethylene vinyl acetate can be used as a material.

The barrier leg cuff 95, as shown schematically in FIG. 2, mainly suppresses excrement flowing along the top sheet 2 and diaper 1 for such excrement.
Corresponding to the barrier 17 for holding and accommodating inside, the back side waist flap portion 21 of the portion corresponding to the back side waist panel 8, the crotch flap portion 22 of the portion corresponding to the crotch panel 8, and the abdominal waist panel 10. The flap 16 is composed of the ventral waist flap 23 of the portion to be closed. The barrier 17 is provided with a tubular portion 28 at the tip thereof, and a barrier elastic member 18 is attached inside the barrel. Further, the back waist flap portion 21 is provided with notches 24 which are notched from both side edges 72 of the barrier leg cuffs 95 toward the other barrier leg cuffs 95. In cooperation with the notch 20 of the above, the notch 11 cut substantially from both side edges 70 of the diaper 1 is constituted.

The barrier leg cuff 95 is generally flexible, in which case it is a material that is conformal and readily conforms to the shape of the wearer's body.
The barrier leg cuff 95 is preferably hydrophobic so as to prevent exudate flow through, and is more preferably water impermeable. Preferred materials for the barrier leg cuff 95 include polypropylene, polyester, rayon, nylon, foam, plastic film, molded film and elastic foam.

The diaper 1 is assembled and constructed using the members described above.

Various components are adhered to a predetermined area on the back sheet 3 by applying an adhesive to the predetermined area. The means for bonding and the bonding area can be appropriately selected as long as they do not cause any inconvenience in assembling the diaper 1. For example, the backsheet may be joined to the absorbent core 28 by a uniform continuous layer of adhesive, a patterned layer of adhesive, or an array of discrete lines, spirals or dots of adhesive. An adhesive that has been found to be satisfactory is manufactured by HB Fuyler Company, St. Paul, Minn. And is marketed under the tradename HL-1258. The application means preferably comprises an open pattern of network fibers of adhesive and is disclosed in US Pat. No. 4.5.
73.986, U.S. Pat. No. 3.911.173, U.S. Pat. No. 4.785.996, U.S. Pat. No. 4.84.
2.666.

For the region to which the leg elastic member 7 is adhered, a spiral coating method having a central axis in the same direction as the extension direction of the leg elastic member 7 is used from the viewpoint of not stretching the elasticity of the elastic member. You can Then, in FIG. 2, on the backsheet 3, a region to which the absorbent core 4 indicated by a chain double-dashed line is attached, a region around the region where the absorbent core 4 is located, to which the topsheet 2 is attached, and a waist elastic member 90 are attached. Flap 16 for Area and Barrier Leg Cuffs 95
Similarly, the spiral bonding method can be adopted for the area where the adhesive is bonded. The most preferable combination of bonding methods is to use the spiral coating method in the area where the leg elastic members 7 are bonded, from the viewpoint of not stretching out elasticity, and in other areas, since the bonding area is relatively large, the spiral coating method is used. It is preferable to use the linear pattern coating method because the coating method takes a long time and the manufacturing on the line takes a long time.

The absorbent core 4, the top sheet 2, the leg elastic members 7, the waist elastic members 90, the barrier leg cuffs 95, etc. are laminated and adhered on the back sheet 3 thus coated with the adhesive.

The top sheet 2 and the barrier leg cuffs 95 are joined as follows. That is, in FIG. 2, joining regions 25 (regions shown by hatching in FIG. 2) along both side edges of the top sheet 2, and a connecting portion 26 between the flap 16 and the barrier 17 of the barrier leg cuff 95 (in FIG. (Indicated by a large broken line) and (see also FIG. 3). In addition, in FIG.
(A hatched area in FIG. 2) and both ends of the tubular portion 28 of the barrier leg cuff 95 are joined in the same manner as described above (see also FIG. 4).

With this structure, the tubular portion 28 of the barrier leg cuff 95 is free except for the portion where the tubular portion 28 is joined to the top sheet 2, that is, near the center. Therefore, when the diaper 1 is worn, it stands up as shown in FIG. 3 and can act as a good barrier against excrement.

The attachment of the first and second fastener tapes 5 and 6 will be described. FIG. 5 shows a state in which the fastener tape 6 is attached to the side ear 29 which is composed of the back seat side panel 12 and the back waist flap 21 of the barrier leg cuff 95. The fastener tape 6 is composed of two members. That is, the adhesive piece 30 for maintaining the diaper 1 in the assembled state by attaching the adhesive piece 30 to the ventral waist region of the diaper 1 and the release piece 31 functioning as a release layer of the adhesive piece 30. The adhesive piece 30 has an adhesive layer 33 applied to the upper surface in FIG. 5, while the release piece 31 has an adhesive layer on the lower surface and the release layer on the upper surface in FIG. 34 is applied. Then, as shown in FIG. 5, the side ear 2 is sandwiched between the side edges 70 of the diaper 1.
9, the surface of the adhesive layer 33 of the adhesive piece 30 is superposed on the surface of the release layer 34 of the release piece 31 in the unused state. When used, it is developed as shown in FIG.

Next, with respect to the diaper 1 described above, suitable dimensions and the like will be illustrated by taking an adult diaper as an example. The lateral width of the adult diaper (the lateral width of the back waist panel 8 and the abdominal waist panel 10 in FIG. 1) is preferably 300 to 100.
Can be 0 mm, and more preferably 400 to 80
It can be 0 mm. Further, the length in the vertical direction of the adult diaper (in FIG. 1, the back waist panel 8, crotch panel 9,
The longitudinal length of the abdominal waist panel 10) may be preferably 500 to 1200 mm, more preferably 550 to 1000 mm. The lateral width of the crotch part of the adult diaper (the lateral width of the crotch panel 9 in FIG. 1) can be preferably 200 to 500 mm, more preferably 220 to 350 mm. The length of the longitudinal side edge of the side ear portion 29 of the back waist panel 8 can be preferably 100 to 350 mm, more preferably 110 to 330 mm.

In a diaper having such an outer shape,
The lateral width of the first fastener tapes 5 and 6 can be appropriately selected, but the longitudinal length thereof is the side ear 29 described above.
Must be appropriately determined in relation to the length in the vertical direction and the opening length of the cut portion 11. The length of each fastener tape 5, 6 in the longitudinal direction is preferably 5 to 200 mm, more preferably 30 to 100 mm.

Since the dimensions of the respective parts described above are examples of the dimensions in the case of an adult diaper, if the outer dimensions of the diaper change, appropriate dimensions can be appropriately selected again. It goes without saying that, for example, when the diaper is for infants, each dimension is generally set to a smaller value. Next, the notch 11 provided on the side ear 29 of the diaper 1 will be described.

FIG. 6 is a partially enlarged view of the side ear 29 including the cut portion 11. As shown in FIG. 6, the cut portion 11 is a side edge 70 of the side ear 29 of the diaper 1, and is cut and raised from substantially the middle portion of the first fastener tape 5 and the second fastener tape 6, and the direction of the other side edge. It has an approximately isosceles triangular shape that is cut toward the ground. By the cut portion 11, the side edge 7 of the diaper 1 is formed.
0 indicates each side edge portion 7 located at both ends of the cut portion 11
It is divided into 4, 75. The notch 11 is prepared by separately preparing the notch 20 provided on the back seat side panel 12 and the notch 24 provided on the back waist panel 21 of the barrier leg cuff 95 as described above. The sheet may be assembled, or the notch 11 may be provided after assembling each sheet having no notch. Further, as will be described later, when the flap portion 16 of the barrier leg cuff 95 is not present, the cut portion 11 coincides with the cut portion 20 provided on the back seat side panel 12.

The relationship between the fastener tapes 5 and 6 in the side ear 29 and the opening of the cut portion 11 is preferably set as follows. That is, in FIG. 6, a slight margin 37 is provided between the cut edge 35 of the cut 11 and the lower edge of the first fastener tape 5, and between the cut edge 36 of the cut portion 11 and the upper edge of the second fastener tape 6. , 38 is preferable.

The limit of the depth direction of the cut portion 11 can be set just before the absorbent core 4, but if it reaches the absorbent core 4, the absorbent core 4 will be exposed to the outside. is not.

Further, it is preferable that the notch 40 in the depth direction of the notch 11 has a substantially semicircular shape having an appropriate radius as shown in FIG. 6 or a substantially semielliptical shape.

An example of suitable dimensions when the notch 11 has a triangular shape as in this embodiment is as follows.

The opening length of the cut portion 11 is determined by the relationship between the length of the side ear 29 in the vertical direction and the length of the fastener tapes 5 and 6 in the vertical direction, and from the length range larger than 0 mm and smaller than 330 mm. It can be selected, and is preferably 30 mm to 150 mm.

The cut depth of the cut portion 11 is an important factor for sufficiently concentrating the pulling force by the fastener tapes 5 and 6, and is preferably 10 to 200 mm.
And more preferably 50 to 120 mm.

Further, the cut portion 1 formed in this way
The opening angle of 1 can be selected from an angle range greater than 0 degrees and less than 180 degrees, preferably 0 to 150.
And more preferably 20 to 90 degrees.

The operation of the diaper 1 thus constructed in the worn state will be described. FIG. 7 illustrates a state in which the diaper 1 configured as described above is worn on a doll that closely resembles a typical adult body type (the waist and the circumference of the hips have substantially the same size). In this case, the tip of the first fastener tape 5 is attached slightly downward and the tip of the second fastener tape 6 is attached slightly upward when worn.

As shown in FIG. 7, the pulling force of the first fastener tape 5 is the side edge portion 74 separated by the cut portion 11 and the first fastener tape 5
It acts on the attachment part of the backsheet 3 from that part.
Is further acting against. It can be seen that the pulling force applied to the back sheet 3 is considerably restricted in the angular range 41 as compared with the conventional one, and the pulling forces by the fastener tapes 5 and 6 do not interfere with each other.

The tensile force applied to the separated side edge portion 74 is restricted to spread downward by the presence of the notch 11, and a part of the tensile force is separated from the separated side edge portion 74. It acts linearly with the notch 40. Then, a slight expansion can be seen only in the portion beyond the cut tip portion 40.
In other words, pulling force is applied directly to the non-stretchable material,
Moreover, by providing the notch 11 which is cut from the side edge toward the other side edge on the side edge on which the pulling force acts, the spread of the pulling force by the first fastener tape 5 is prevented, and the back sheet 3 is provided. It is possible to concentrate effectively on the contrary. Further, this force mainly acts most effectively in the vicinity of the waist of the back seat 3, and is effective in improving the fit around the waist. Further, when the waist elastic member 90 is provided as in the present embodiment, the total amount of the force effectively acting on the waist elastic member 90 can be increased by concentrating the pulling force. In cooperation with the elastic action of 90, it acts to further enhance the sealing action.

Further, since the second fastener tape 6 is attached with its tip facing upward, the pulling force of the second fastener tape 6 acts concentratedly and effectively in the vicinity of the legs,
It is effective to improve the fit around the legs.
Further, since the total amount of force effectively acting on the leg elastic member 7 can be increased, the sealing action can be further enhanced by cooperating with the elastic action of the leg elastic member 7.
By improving the fit of the legs and the waist, it is possible to prevent the diaper from slipping and to provide a stable wearing state for a long period of time.

In the embodiment shown in FIG. 7, the second fastener tape 6 is used.
Since the distance between the mounting portion and the notch tip portion 40 is smaller than the actual distance, no tension is applied between the mounting portion and the notch tip portion 40.

FIG. 8 shows the diaper 1 constructed as described above when worn on a doll that closely resembles the adult body type (the waist circumference is larger than the hip circumference) different from that of FIG. The state is illustrated.

In FIG. 8, part of the pulling force of the second fastener tape 6 is linearly divided between the separated side edge portion 75 to which the second fastener tape 6 is attached and the notch tip portion 40. Therefore, the pulling force is restricted from spreading upward. As a result, the overall pulling force applied to the backsheet 3 by the second fastener tape 6 can be sufficiently concentrated to the extent shown by the angle range 42. This means that the pulling force can be distributed around the legs by increasing the pulling force as much as possible,
This also means that the fit around the legs can be improved.

Further, since the first fastener tape 5 is attached with its tip facing downward, the pulling force thereof is concentrated and effectively acts on the vicinity of the body,
It is effective to improve the fit around the body.

In the embodiment shown in FIG. 8, the first fastener tape 5 is used.
Since the distance between the mounting portion and the notch tip portion 40 is smaller than the actual distance, no tension is applied between the mounting portion and the notch tip portion 40.

As is clear from the above example, the presence of the notch 11 makes it possible to effectively concentrate each pulling force on a required portion without dispersing the pulling force applied to the back sheet by each fastener tape. it can. As a result, the wearing condition is stable, the fit can be improved, and the adhesion around the waist and legs can be improved,
Leakage can also be reduced.

Further, in FIG. 9, the first and second fastener tapes 5 and 6 are attached so that the tips thereof are separated from each other. In this case, the pulling force of the lower end edge by the first fastener tape 5 and the pulling force of the upper end edge by the second fastener tape 6 both act on the cut tip portion 42.

The mounting form as shown in FIG. 9 is rare, but this is possible because the provision of the notch 11 allows the frontage of the opening of the notch 11 to be further widened. Is. Even if such a mounting form is used in a conventional diaper having no cut in the back sheet portion, it is practically impossible to physically widen the frontage of the opening, and the fastener tapes 5 and 6 are used for pulling. Since there is no notch, the force spreads further than the state shown in FIG. 9, and it is not possible to concentrate each force sufficiently on the required portion of the backsheet. However, according to the present invention, as shown in the angle range in FIG. 9, it is possible to regulate the pulling force.

In the attached state as shown in the above embodiment (FIGS. 7, 8 and 9), the notch tip portion 40 is formed.
Although a considerable load will be applied to the vicinity, as described above, since the cutting tip has a circular shape or a shape similar thereto in advance, the load applied there can be gradually propagated and reduced. Therefore, even if an excessive load is applied to the notch tip portion 40 due to the pulling force, the problem that the backsheet 3 tears from that portion is eliminated. Such a process most effectively exerts its effect in the mounting form as shown in FIG.

The shape of the tip portion is not limited to a circular shape in particular, and may be any shape as long as the load can be gradually propagated and reduced. As another example of such a shape, a relatively circular shape or a polygonal shape approximated to a part of an elliptical shape can be used, and even if the tip has an acute angle, the part is subjected to a reinforcing treatment. As a result, it is possible to prevent the cutting tip 40 from tearing.

As an example of such reinforcing treatment, in addition to the above-described shape treatment of the tip portion, the material used as the back sheet described above corresponding to the tip portion may be adhered with an adhesive or the like. However, merely applying the adhesive partially has an effect as a reinforcing treatment. As the adhesive agent, the adhesive agent used for assembling the diaper described above can be used. Next, another embodiment will be described with reference to FIG. In the description from FIG. 10 onward, the members described in FIGS. 1 to 9 are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 10 shows a case in which a slit 50 is provided in place of the cut portion 11 having the substantially isosceles triangular shape described in the above embodiment. Even with such a slit 50, the action and effect when the diaper 1 is worn is as shown in FIG.
To substantially the same as shown in FIG. In this embodiment, since it is only necessary to provide the slits in the side ear 29 portion, there is an advantage that manufacturing on the manufacturing line is relatively easy.

Further, since the slit 50 is used,
The cut tip portion 51 has an acute angle whose angle is substantially zero. Due to this, the notch tip 51
When a tensile load is applied to the backsheet, the backsheet may tear from that portion. Therefore, Figure 1
As shown in 0, a hole 52 for distributing the load can be provided further ahead of the cut tip portion 50.
In this way, for example, the pulling force of the first fastener tape 5 acts on the tangent line of the hole hole 52 (see the alternate long and short dash line in FIG. 10), so that the load can be propagated and dispersed in the same manner as the above-described embodiment. it can. As a result, tearing from this part can be prevented. In addition to such a configuration, it is possible to reinforce the vicinity of the cut tip portion 51 by applying an appropriate reinforcing member as described above.

Still another embodiment will be described with reference to FIG. In FIG. 11, a cutout portion 53 having a substantially semi-elliptical shape is provided instead of the cutout portion 11. Even when such a cut portion 53 is provided, a part of the pulling force by the first and second fastener tapes 5 and 6 is not included in the cut portion 53.
Since it acts as a tangent to the semi-elliptical shape as indicated by the alternate long and short dash line in FIG. In the embodiment shown in FIG. 11, the tensile force can be more dispersed as compared with the substantially isosceles triangular notch tip portion 40. Therefore, it is possible to exert a strong resistance against the tear near the cut tip portions 53 and 54.

When the substantially semi-elliptical notch 53 is provided, the opening length and the notch depth at the side edge 39 of the side ear 29 and the radius of curvature can be appropriately set.

In FIG. 12, a rectangular notch 55 is provided instead of the notch 11. When such a cut portion 55 is provided, the pulling force is generated by the first and second fastener tapes 5 and 6 at the cut tip portion 56.
Since it acts on both end edges 57 of the same as shown by the alternate long and short dash line in FIG.
The effect can be obtained. In the embodiment shown in FIG. 12, since the notched tip edge 57 to which a load is applied has a right angle, the pulling force can be dispersed more favorably.
To further increase the resistance to tearing, 2 in FIG.
As indicated by an imaginary line 58 indicated by a dotted chain line, the cut tip portion 56
Can be a polygonal notch tip, and although not shown, the notch tip can be substantially semicircular or triangular.

Although the shape of the notch provided in the side ear 29 has been described above, the shape is not limited to these, and various shapes can be used as long as the initial object of the present invention can be achieved.

FIG. 13 shows another modification. This modification shows a case where the overall shape of the diaper 1 is substantially rectangular, and this shape matches the overall shape of the backsheet 3. Further, in FIG. 13, the absorbent core 4 also has a substantially rectangular shape, and is formed smaller than the back sheet 3. Further, two leg elastic members are arranged on both side edges of the diaper 1, and one waist elastic member is arranged on both end edges. Although the top sheet and the barrier leg cuffs are omitted in the drawings, they are substantially the same as those in the above-described embodiment, and the diaper 1 has a different shape, and thus has a shape corresponding to the shape.

Also in the case of this modification, the cut portion 11 provided in the diaper 1 corresponds to the cut portion 20 for cutting a part of the non-stretchable back sheet. The cut portion 11 has side edges 70 of the diaper 1 which are substantially the same as the side edges of the back sheet 3, and the side edges 74, 75.
The fastener tapes 5 and 6 are provided on the side edges 74 and 75, respectively. Therefore, the force applied from each fastener tape 5 and 6 is limited to be spread by the notch portion 11, and the pulling force can be sufficiently concentrated in a required portion by this, and the effect expected by this embodiment is also the same as the above-mentioned embodiment. Similar to the example.

FIG. 14 shows still another modification. This modification also shows a case where the overall shape of the diaper 1 is substantially rectangular. This shape matches the overall shape of the backsheet 3. Since other configurations can be the same as those in FIG. 13, detailed description thereof will be omitted.

Even in the case of the modification shown in FIG. 14, the diaper 1
The notch 11 provided at the position corresponds to the notch 20 that cuts a part of the non-stretchable back sheet. The cut portion 11 separates the side edge 70 of the diaper 1 that is equivalent to the side edge of the back sheet 3 into side edge portions 74 and 75, and the side edge portions 74 and 75 each have the fastener tape 5, 6 is provided.

In this modification, each side edge portion 74, 75
In the backsheet region (the hatched portion shown in FIG. 14) located substantially inside of the non-stretchable backsheet 3, a stretchable elastic portion obtained by subjecting the non-stretchable backsheet 3 to stretchable elastic processing is provided. Therefore, the fastener tapes 5 and 6 are connected to the side edges 82 and 83 of the substantially non-stretchable backsheet 3 via the stretchable elastic portions 80 and 81.

Regarding the expansion and contraction elastic processing described above, US Patent Application No. 08 / 100,958 (Charles W. Chappe
ll et al.), which is
Filed August 3, 993, the applicant of which is the same as the applicant of the present invention. The stretch elastic processing described in this US patent application can be suitably used in the present invention. Also in this modification, since the substantially non-stretchable back sheet 3 is separated into the side edge portions 82 and 83 by the cut portion 11, the force applied from each fastener tape 5 and 6 is The elastic elastic portions 80, 81 act on the substantially side edge portions 82, 83, and the notch portion 11 provided therebetween prevents the force from spreading. As a result, the pulling force can be sufficiently concentrated on the required portion, and the effect expected by this embodiment is also the same as that of the above embodiment.

Furthermore, in the case of this modified example, the provision of the elastic expansion / contraction portion as described above also has the effect of facilitating the adjustment of the diaper attachment.

The modification shown in FIG. 14 can be modified as follows. That is, (1) the side edge 70 of the diaper 1 and the region 84 indicated by the alternate long and short dash line can also be a stretchable elastic portion that has been stretched and elastically processed as described above.

In this case, the stretchable elastic portion 80,
It is preferable that 81 is given expansion and contraction elasticity in the direction shown by arrow 85 in FIG. 14, but it is preferable that the expansion and contraction elastic portion 84 is given expansion and contraction elasticity in the direction shown by arrow 86 in FIG. By giving expansion / contraction elasticity to the expansion / contraction elastic portion 84 in such a direction, the leg elastic member can be substituted, and the leg elastic member 7 can be omitted.

From the viewpoint of implementing the present invention, the elastic expansion / contraction portion 84 is used.
It does not matter even if it has elasticity in the direction indicated by the arrow 85. (2) Only one of the stretch elastic regions 80 and 81 may be stretch elastic processed.

In this case, it is clear that the other of the stretchable elastic regions 80 and 81 is not stretched and elastically processed and remains the non-stretchable backsheet 3. Therefore, one of the fastener tapes 5 and 6 is directly connected to each side edge portion of the non-stretchable back sheet 3.

In essence, it is thought that it is better to positively provide a structure such as a stretchable elastic portion that facilitates adjustment for attachment, but it is necessary to consider the labor and cost of the processing, and if necessary. It is preferable that such processing is selectively performed only in a necessary portion.

A preferred choice for such a selection is shown in FIG.
The elastic elastic region 80 near the waist shown in FIG. 4 is a non-stretchable backsheet without this treatment, and the elastic elastic region 81 near the legs is subjected to this treatment. When attaching the fastener tape 5 on the waist, it is possible to pull the fastener tape 5 relatively parallel to the edge of the diaper 1, so that a small adjustment allowance is not required, but the fastener tape 6 on the leg does not need to be adjusted. This is because it is rather rare that the side edge of the diaper 1 can be pulled in the attachment direction of the fastener tape 6, and various attachment methods may be performed. (3) At least one of the stretchable elastic regions 80, 81 is different from the non-stretchable back sheet that originally lacks this region, instead of subjecting a part of the non-stretchable back sheet 3 to stretch treatment. Alternatively, a stretchable member made of a separate member may be connected.

The stretchable member in this case includes the following.

That is, a method for producing such a stretchable member is described, for example, in US Pat. 07 / 662536,07
/ 662537 and 07/662543, each of which was filed on February 28, 1991, with Procter & Gamble as the applicant. These references describe making elasticized laminates by mechanically stretching an unstretched stretch laminate web to impart elasticity in the stretch direction at least to the point of initial stretch. Stretchable non-elastic nonwoven fabric is
When it is relaxed, it is first bonded to the liquid impermeable elastic layer to form a laminated web. The laminated web is then paired with a pair of opposing pressure applicators, preferably
Supplied between applicators with three-dimensional surfaces that are oriented toward each other to varying degrees to undergo increasing mechanical stretching (or desired non-uniform or subsequent mechanical stretching). , Whereby the stretchable nonwoven is stretched permanently in the direction of stretch. When mechanical stretching is removed, the elastic layer causes the laminate to substantially return to its pre-stretched shape and dimensions, thereby elastically stretching the non-elastomeric laminate in the direction of initial stretching. . The stretchable member obtained as described above can be used.

In this case, each fastener tape 5 and the stretchable member can be prepared in advance as an assembly part, so that the assembly part can be attached in one step on the manufacturing line, which reduces the manufacturing time. It can be shortened.

When a separate member is connected to only one of the stretchable elastic regions 80 and 81, the other stretchable elastic region is formed by subjecting the non-stretchable backsheet to stretchability as described above. Alternatively, the non-stretchable back sheet itself which has not been subjected to such a process may be used. (4) The side edge 70 of the diaper 1 can be formed into a backsheet shape in which a region 84 indicated by a chain line is cut out in advance, and the shape of the above (2), (3 ) May be applied.

In this case, the shape of the diaper 1 is substantially T-shaped, and since the back sheet 3 portion is formed in the vicinity of the leg portion to be narrower than in the vicinity of the waist portion, the fitting property in the vicinity of the leg portion is further enhanced. be able to. The region 84 cut out in advance from the back sheet may be a region having a wider width toward the center of the diaper 1, whereby the width of the back sheet 3 near the legs can be made narrower. It is possible to improve comfort and fit for the wearer. (5) The shape of the diaper shown in FIG. 14 can be made into an hourglass-shaped overall shape as shown in FIG. 1, and any one of the above (2) and (3) can be used as such a shape. It may be adapted. In this case,
Since it has the ears protruding toward the side edges of the diaper in the vicinity of both edges of the waist, the comfort and fit of the wearer can be further improved.

Next, FIG. 15 shows still another modified example of FIG.

In FIG. 15, the second stretchable elastic portions 87, 88 having elastic modulus different from that of the non-stretchable elastic portions or stretchable elastic portions 80, 81 are provided outside the stretchable elastic portions 80, 81 provided in FIG. Are connected. The respective fastener tapes 5 and 6 are substantially non-stretchable on each side of the backsheet 3 via the stretchable elastic portions 87 and 88 and the stretchable elastic portions 80 and 81. It is connected to the edges 82 and 83.

The effect expected by such a configuration is similar to that of the above-mentioned embodiment. Non-expandable elastic parts 87, 8
In the case where the stretchable elastic portions 80, 81 are obtained by subjecting a part of the non-stretchable backsheet 3 as described above to stretchability, the original unprocessed non-stretchable backsheet 3 is provided. Can be a part of. In addition, only the non-stretchable elastic portions 87 and 88 are separate members selected from the materials used for the non-stretchable backsheet 3, and the stretchable elastic portions 8 will be described later.
It can also be connected to 0 and 81.

As the second stretchable elastic portions 87 and 88, when the stretchable elastic portions 80 and 81 are obtained by subjecting a part of the non-stretchable backsheet 3 as described above to stretchable processing, the It can be a part of the non-stretchable back sheet 3 processed to have different elastic moduli. Alternatively, only the second elastic portions 87, 88 may be a separate member having a different elastic modulus from the elastic portions 80, 81, and may be connected to the elastic portions 80, 81 later.

The elastic modulus of the second elastic portions 87, 88 is preferably a material having an elastic modulus lower than that of the elastic portions 80, 81. The most preferable attachment of the fastener tapes 5 and 6 is the case where the attachment portion is non-stretchable in terms of the attachment stability.
However, in this case, since the area of the stretchable elastic portion is reduced, the adjustment allowable amount for attaching the fastener tape when attaching the diaper to the wearer is also reduced. Therefore, if a material having a lower elastic modulus than the elastic elastic portions 80, 81 is used for the second elastic elastic portions 87, 88 as described above, the area for obtaining the adjustment allowance is relatively increased and the cost is low. This has the effect of increasing the mounting stability of the fastener tape.

Also in the modification shown in FIG. 15, as described as the modification of FIG. 14, the above-described processing (1) for the side edge of the diaper and the area 84 shown by the alternate long and short dash line, the elastic elastic areas 80, 81. The above processes (2) and (3) regarding the above, and the above processes (4) and (5) regarding the outer shape of the diaper can be appropriately performed. In addition, the above-mentioned non-stretchable elastic portion or the second stretchable elastic portion 87, 8
The processes of 8 can be combined in any way.

In the embodiment described above, the notch 11 provided on the side ear 29 is provided on the notch 20 provided on the back seat side panel 12 and the back waist panel 21 of the barrier leg cuff 95. However, when the flap 16 of the barrier leg cuff 95 is not present, the barrier leg cuff 95 naturally includes the back waist panel 21.
Therefore, in that case, the cut portion 11 may be formed only from the cut portion 20 of the back sheet 3.

When the flap 16 of the barrier leg cuffs does not exist, the top sheet 2 corresponding to the flap 16 is not present.
Can be extended and accommodated, and the extension can be provided with a notch replacing the notch 24 provided on the back waist panel 21 of the barrier leg cuff 95.

As described with reference to FIG. 6, slight margins 37 and 38 are provided between the fastener tapes 5 and 6 and the cut edges 35 and 36. When each fastener tape 5, 6 is attached on the manufacturing line, it is attached with a predetermined accuracy, but this attachment may be misaligned. In this case, due to the existence of the margin portions 37 and 38, the margins 37 and 38 are not attached beyond the cut edges 35 and 36. However, if this mounting accuracy is controlled extremely strictly, this margin can be deleted,
The notched edge may be provided from the fastener tape attachment.

Furthermore, in the above embodiment, the side ear 29 is used.
An example of a notch cut at a substantially right angle from the side edge 39 to the center of the diaper has been illustrated, but the notch angle is not limited to this, and a notch cut at an angle to the side edge 39 may be used. It may be.

Further, although two fastener tapes are provided on one side edge, three or more fastener tapes can be provided on one side edge. In that case, notches may be provided in all parts between the fastener tapes, or a part without notches may be provided as necessary. In any of the aspects, the initial object of the present invention can be achieved if there is a portion provided with at least one notch.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a disposable diaper according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a disposable diaper according to an embodiment of the present invention.

FIG. 3 is a III-II disposable diaper according to the embodiment of FIG.
Sectional drawing which concerns on I cutting line.

FIG. 4 is a sectional view taken along the line IV-IV of the disposable diaper according to the embodiment of FIG.

5 is a cross-sectional view taken along the line V-V of the disposable diaper according to the embodiment of FIG.

FIG. 6 is an enlarged view of a main part of the disposable diaper according to the embodiment of FIG.

FIG. 7 is a diagram showing a first wearing state of the disposable diaper according to the embodiment of FIG.

FIG. 8 is a view showing a second worn state of the disposable diaper according to the embodiment of FIG.

9 is a diagram showing a third worn state of the disposable diaper according to the embodiment of FIG. 1. FIG.

FIG. 10 is an enlarged view of a first main part of a disposable diaper according to another embodiment of the present invention.

FIG. 11 is an enlarged view of a second main part of a disposable diaper according to another embodiment of the present invention.

FIG. 12 is an enlarged view of a third main part of a disposable diaper according to another embodiment of the present invention.

FIG. 13 is a plan view of a disposable diaper according to another embodiment of the present invention.

FIG. 14 is a plan view of a disposable diaper according to another embodiment of the present invention.

FIG. 15 is a plan view of a disposable diaper according to another embodiment of the present invention.

[Explanation of symbols]

 1 Diaper 2 Topsheet 3 Backsheet 4 Absorbing core 5, 6 1st, 2nd fastener tape 11 Notch part 40 Notch tip part 70 Side edge 74, 75, 82, 83 of diaper each side edge part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takako Haga 1-27-414 Asahigaoka-cho, Ashiya-shi, Hyogo

Claims (16)

[Claims] 1. A disposable diaper comprising a liquid-permeable topsheet, a liquid-impermeable and non-stretchable backsheet, and an absorbent core disposed between the two sheets, at least one of the backsheets. The side edge is provided with a notch that separates the one side edge into each side edge portion, and each side edge portion of the one side edge of the separated back sheet connects the back side and the abdomen side of the diaper, respectively. A disposable diaper, characterized in that the fastening means of (1) is connected. 2. A stretchable elastic portion is connected to each of the at least one side edge portions, and the fastening means is connected to each of the side edge portions via the stretchable elastic portion.
The disposable diaper according to claim 1. 3. The disposable diaper according to claim 2, wherein the stretchable elastic portion is obtained by subjecting a part of the non-stretchable back sheet to stretch processing. 4. A non-stretchable elastic portion is further connected to the stretchable elastic portion, and the fastening means is connected to each of the side edge portions via the non-stretchable elastic portion and the stretchable elastic portion. The disposable diaper according to claim 2, which is characterized in that. 5. The disposable diaper according to claim 4, wherein the stretchable elastic portion is formed by subjecting a part of the non-stretchable back sheet to stretch processing. 6. The disposable diaper according to claim 5, wherein the non-stretchable elastic portion is a part of the non-stretchable back sheet. 7. An elastic elastic portion having a different elastic modulus is connected to the elastic elastic portion, and the fastening means is connected to each side edge portion via the elastic elastic portion and the elastic elastic portion. The disposable diaper according to claim 2, wherein 8. The disposable diaper according to claim 7, wherein the stretchable elastic portion is formed by subjecting a part of the non-stretchable back sheet to stretch processing. 9. An elastic modulus having a different elastic modulus obtains an elastic modulus different from an elastic modulus obtained by elastic processing performed on a part of the non-stretchable back sheet for the elastic elastic part. 9. The disposable diaper according to claim 8, wherein a part of the non-stretchable back sheet is stretch-processed as described above. 10. The disposable diaper according to claim 7, wherein the elastic moduli of the elastic elastic parts having different elastic moduli are lower than the elastic moduli of the elastic elastic parts. 11. The disposable diaper according to claim 1, wherein the notch portion is reinforced at a tip end portion thereof. 12. The disposable diaper according to claim 11, wherein the reinforcing treatment is to treat the shape of the cut end into a substantially circular shape. 13. The disposable diaper according to claim 11, wherein the reinforcing treatment is to treat the cut tip shape into a substantially elliptical shape. 14. The disposable diaper according to claim 11, wherein the reinforcing treatment is to treat the cut tip shape into a polygonal shape. 15. The disposable diaper according to claim 1, wherein a waist elastic member is attached near the waist of the diaper. 16. The disposable diaper according to claim 1, wherein leg elastic members are attached near the legs of the diaper.