JP2002172134A - Throw-away paper diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve both of appearance and fitness of products. SOLUTION: This throw-away paper diaper is formed with a waist opening WO and right and left leg openings LO in a use state and has many stretching members 21 having intervals in a longitudinal direction. A sheet 1 constituting the outside surface of the products is fitted with the stretching members 21 of <=620 dtext in size in the state of specifying their intervals to <=7.0 mm in a range of >=60% length of a girth section T of a front body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable disposable diaper, and more particularly, to a waist opening and a left and right leg opening formed in a use state, and a waist portion at least extending from the waist opening edge to the leg opening start end. And a disposable disposable diaper having a plurality of elastic members extending along a circumferential direction and having a vertical interval.

[0002]

2. Description of the Related Art In recent years, pants-type disposable paper diapers have been widely used. In this case, the elastic member is usually made of thread rubber, especially around the waist, and this thread rubber is unevenly distributed on the waist opening edge side of the waist portion (the range of length from the waist opening edge to the leg opening start end). It is arranged on the entire circumference of the region made, and the arrangement interval is 10 mm or more. Further, usually, the arrangement interval of the waist openings is made small, and the arrangement interval of the lower waist portion (the portion on the crotch side of the waist opening) is made large in order to prevent excessive compression of the abdomen.

On the other hand, in order to prevent the product from slipping when the product is mounted, the thickness of each thread rubber is increased to increase the contraction force.

[0004]

However, the biggest drawback of the prior art is that unsightly wrinkles occur. That is, in the non-mounting stage, as shown in FIG.
The wrinkles generated due to the contraction of the rubber thread G occur from one side to the other side of the adjacent thread rubber G, and the wrinkles of the unevenness are repeatedly generated in the circumferential direction. Further, wrinkles between adjacent thread rubbers G and wrinkles between immediately adjacent thread rubbers G are:
Generates with an independent tendency, not continuous.

[0005] These wrinkles have longer ridges or valleys according to the distance between the thread rubbers G, and the pitch of the circumferential irregularities is larger as the interval between the thread rubbers G is larger. Therefore,
The appearance of large wrinkles at random on the outer surface of the product as a whole causes the outer surface of the product to be "mokomoko", giving a feeling quite far away from pants clothing.

Further, since each thread rubber G has a large thickness and a large shrinkage force, for example, when one mountain wrinkle is taken as an example, the valley on the thread rubber G side of the mountain becomes deep, and the presence of the thread rubber G Becomes clear. In addition, since a peak or a valley is large and a contraction force acts strongly, complicated small wrinkles are randomly generated at the peak or the valley.

[0007] On the other hand, since the presence of the thick thread rubber G is clear, the consumer has a fear that the wearer's skin may be strongly tightened by the thick thread rubber G, and the consumer's willingness to consume is reduced. In fact, it has been found that the contraction force of the thick thread rubber G acts strongly at the side portions where the absorbent core does not exist, and that portion may remain as a rubber mark on the skin. In addition, the product is prevented from slipping off due to friction between the inner surface of the product and the skin in the part where each thread rubber hits the skin, but since the number of thread rubbers per unit area is small,
Unless the contraction force is very large, there is a risk that the product will slip off.

Therefore, the main problem of the present invention is that the wrinkles are inconspicuous and give a clean feeling, that is, the outer surface of the product does not "mokomoko", and even if it is visible, the wrinkles are fine-grained and have a generally flat surface. The present invention is to provide a disposable disposable diaper having an excellent appearance. Another problem is that the surface is pressed against the skin, so that there is no local excessive pressure on the skin, so that no rubber marks are formed, and the friction between the inner surface of the product and the skin is reduced. And
Good fit is achieved by close contact,
An object of the present invention is to prevent a product from falling off.

[0009]

The present invention which has solved the above-mentioned problems is as follows. <Invention according to claim 1> In the use state, a waist opening and left and right leg openings are formed, and at least a waist circumference portion extending from the waist opening edge to the leg opening start end in a circumferential direction along a circumferential direction, and A disposable disposable diaper having a plurality of elastic members spaced apart in a longitudinal direction, and having a thickness of at least 620 dtex at least in the front body.
A region where the following elastic member is attached to a sheet constituting the outer surface of the product with the interval set to 7.0 mm or less exists over a length range of 60% or more of the waist portion. , A disposable disposable diaper characterized by that.

(Function and Effect) In the present invention, the thickness of the elastic member existing over a length range of 60% or more around the waist from the waist opening edge to the leg opening start end is 62 mm.
0 dtex or less, and the arrangement is 7.0 mm or less. As a result, as schematically shown in FIG. 2, the generated wrinkles are narrow in the circumferential direction, short in the vertical direction (direction orthogonal to the circumferential direction), and the wrinkles are substantially continuous in the vertical direction. Generated by The concave or convex of each wrinkle is very small. Moreover, there is almost no constriction at the thread rubber g portion, and it is difficult to determine the presence of the thread rubber g when the color of the sheet constituting the outer surface and the color of the thread rubber g are the same. As a result, the wrinkles are inconspicuous, and even though they are visible, they are fine-grained wrinkles. Become.
In addition, since the surface is pressed against the skin, there is no local excessive pressure on the skin, so that no rubber mark is generated, and the friction between the inner surface of the product and the skin extends throughout, Close contact provides good fit and prevents the product from slipping off.

<Invention according to claim 2> In a use state, a waist opening and left and right leg openings are formed, and at least a waist opening portion extends from the waist opening edge to the leg opening start end in a circumferential direction at a waist circumference. A disposable disposable diaper having a number of elastic members along and along the longitudinal direction, and having a thickness of at least 6
The elastic member of 20 dtex or less sets the interval to 7.0.
mm or less, the region attached to the sheet constituting the outer surface of the product over the length range of 60% or more of the waist portion, and exists only in the left and right side portions excluding the center portion. A disposable disposable diaper characterized by the following.

(Effects) When looking at the product, the conspicuous part is the central part (central part in the circumferential direction). In this embodiment, since the elastic members are present only at the left and right side parts excluding the central part, the product Excellent appearance.

<Invention according to claim 3> In the use state, a waist opening and left and right leg openings are formed, and at least a waist opening portion in a length range from the waist opening edge to the leg opening start end is formed in a circumferential direction. A disposable disposable diaper having a plurality of elastic members along and longitudinally spaced and having a semi-rigid absorbent core along the longitudinal direction, having a thickness of at least 620 dt at the front body.
ex or less, the region attached to the sheet constituting the outer surface of the product in a state where the interval is set to 7.0 mm or less, over a length range of 60% or more of the waist portion, A disposable disposable diaper characterized in that the disposable diaper is present only on the left and right side parts except the center part.

(Function and Effect) Under the configuration in which the semi-rigid absorbent core is arranged along the longitudinal direction, the elastic members are present only on the left and right side parts excluding the center part. Since the absorbent core has a semi-rigidity as compared with the flexible sheet, the absorbent core is less likely to be deformed or wrinkled by the transmission of the contraction force by the elastic member. As a result, the central portion which is conspicuous as the product is not deformed or wrinkled, and thus the product is excellent in appearance.
In the center of the product, a design such as a character is applied, but since this portion does not deform or wrinkle, the design can be clearly understood without collapse. In addition, the circumferential tightening force of the product mainly acts on the sides of the waist, and is attenuated toward the center of the absorbent core due to frictional force with the skin. The direction tightening force is small, and the stomach is not excessively compressed.

<Invention of claim 4> In the use state, the waist opening and the left and right leg openings are formed, and at least the waist opening from the waist opening edge to the leg opening start end in the circumferential direction around the waist. A disposable disposable diaper having a number of elastic members along and along the longitudinal direction, and having a thickness of at least 6
The elastic member of 20 dtex or less sets the interval to 7.0.
mm or less, the region attached to the sheet constituting the outer surface of the product extends over a length range of 60% or more of the waist portion, and only the left and right side portions excluding the center portion; A disposable disposable diaper characterized in that the disposable disposable diaper is present only in the left and right parts of the length range excluding the central part of the crotch part forming the opening.

(Effects) By providing the elastic members at the left and right portions except for the central portion of the crotch portion, the left and right portions of the sheet constituting the outer surface of the product are not flattened and fit to the wearer's skin. And look good.

<Invention according to claim 5> An absorbent main body having an absorbent core is disposed over the front body and the back body on the inner surface side of the outer sheet composed of a plurality of layers constituting the outer surface of the product. A disposable paper diaper having a plurality of elastic members formed with left and right leg openings, and at least in a waist circumference portion extending from the waist opening edge to the leg opening start end along a circumferential direction and having a vertical interval. At least in the front body, an area where the elastic member having a thickness of 620 dtex or less is attached to a sheet constituting an outer surface of the product with the interval set to 7.0 mm or less is the body. Present over a length range of 60% or more of the circumference,
A disposable disposable diaper characterized by the following.

(Function and Effect) The outer surface of the product may be constituted by an outer sheet made up of a plurality of layers, and an absorbent main body having an absorbent core may be arranged on the inner surface side of the front body and the back body.

<Embodiment 6> The stretchable member has an elongation ratio of 150 to 350% and an elongation stress of 4 to 17 g at 150% elongation.
Disposable disposable diapers according to the item.

(Effects) When the above numerical range is limited, the effects of the first to fourth aspects become clearer.

According to a seventh aspect of the present invention, the stretchable member extends from the waist opening edge to the leg opening from a position within 30 mm in the vertical direction from the waist opening edge. The disposable disposable diaper according to any one of claims 1 to 6, wherein the disposable disposable diaper according to any one of claims 1 to 6, which is attached over a length range from a starting end to a position within 10 mm on a waist opening edge side.

(Function and Effect) When the above numerical range is limited, the function and effect according to claims 1 to 6 become more apparent.

<Invention according to claim 8> The thickness is 620 dt.
The disposable paper diaper according to any one of claims 1 to 7, wherein five or more extensible members of ex or less are arranged adjacently at an interval of 7.0 mm or less.

(Effects) If five or more elastic members are arranged adjacent to each other, the area becomes clear as a flattened area, and the effects of the first to seventh aspects become more apparent.

<Invention of claim 9> In the use state, the waist opening and the left and right leg openings are formed, and at least the waist opening portion extends from the waist opening edge to the leg opening start end in the circumferential direction at the waist circumference. A disposable paper diaper having an elastic member along, the elastic member is a mesh-like elastic member, at least in the front body, the area where the mesh elastic member is attached to a sheet constituting the outer surface of the product, A disposable disposable diaper characterized by being present over a length range of 60% or more of the waist portion.

(Function and Effect) The same function and effect can be obtained even if the elastic member is a mesh-like elastic member.

<Invention according to claim 10> In use, a waist opening and left and right leg openings are formed,
A disposable disposable diaper having an elastic member along a circumferential direction at least in a waist circumference portion extending from the waist opening edge to the leg opening start end, wherein the elastic member is a non-perforated or perforated film-like elastic member. Wherein, at least in the front body, a region where the film-like elastic member is attached to a sheet constituting an outer surface of the product exists over a length range of 60% or more of the waist portion. Disposable disposable diapers.

(Effects) A non-porous or perforated film-like elastic member can be used as the elastic member.

[0029]

Embodiments of the present invention will be described below in more detail with reference to the drawings. Hereinafter, the embodiment of the present invention will be described in detail by first taking an example of a pants-type disposable diaper, and then, when using the diaper (when wearing), bring the left and right sides of the back to the left and right sides of the abdomen. An example of application to a so-called tape disposable diaper of a type in which is bonded by a tape fastener (including an adhesive tape fastener and a surface fastener) will also be described.

("Explanation of Terms of the Present Invention" and First Embodiment of Pants-Type Disposable Diaper) Referring mainly to FIG. 3, explanations of terms relating to parts and directions of the present invention will be given while referring to FIGS. Hereinafter, the pants-type disposable diaper according to the first embodiment will be described. As shown in FIGS. 3 and 4, the pants-type disposable diaper according to the first embodiment has a flexible outer sheet 1 and is fixed to the inner surface of the outer sheet 1, and has a longitudinal direction ( (Front-back direction).

The outer sheet 1 is formed by laminating and fixing two or three or more air-permeable and water-repellent nonwoven fabrics. At the final stage of the manufacturing process after the outer sheet 1 and the absorbent main body 10 are overlaid, The entire longitudinal direction of the both side edges of the body F and the back body B is joined by means such as ultrasonic sealing or heat melting (this joint is denoted by reference numeral 30), and FIG.
As shown in FIG. 2, a waist opening WO and a pair of left and right leg openings LO are formed.

In FIG. 3, "vertical direction" means a direction connecting the ventral side and dorsal side, and "circumferential direction" means a direction orthogonal to the vertical direction. "Waist opening edge" means the edge of the waist opening WO, and "leg opening edge" means the edge of the leg opening LO. The “leg opening start end” refers to the leg opening edge of the leg opening LO and the joint 30.
, Which means the beginning of the leg opening edge. "Waist circumference" T means the entire area of the length range from the waist opening edge to the leg opening start end.
The waist portion T is conceptually “waist portion” W and “lower waist portion”
U and U. These vertical lengths are
Depending on the size of the product, the waist W is 15 ~
40 mm, the waist lower part U is 65 to 120 mm. "Crotch" L means the entire region of the length range forming leg opening LO. The “central portion” means an intermediate region excluding a side portion including the center line of the product. The “side portions” mean both side portions of the waist portion T.

As shown in FIG. 5, the absorbent main body 10 is made of a nonwoven fabric or the like, and has a rectangular liquid-permeable top sheet 11 that directly touches the wearer's skin, a cotton-like pulp as a main body, and has a certain degree of rigidity ( Absorber AB consisting of a (semi-rigid) rectangular absorbent core 13 and a frame-wrapped rectangular crepe paper 14 wrapping the entire upper and lower surfaces thereof, and a polyethylene plastic film reaching the vicinity of both side edges on the back surface of the absorbent AB And a liquid-impervious backsheet 12 consisting of: the liquid-permeable topsheet 11 extends around both side edges of the absorber AB, reaches the back surface, and is superimposed on the liquid-impervious backsheet 12. These elements are integrated by a hot-melt adhesive (the bonded parts are indicated by * in the figure). If necessary,
As shown, the liquid-permeable topsheet 11 and the crepe paper 14
And a liquid-permeable second sheet 11S can be interposed between the second sheet 11S. Almost the entire back surface of the absorbent main body 10 is adhered to the outer sheet 1 with a hot melt adhesive to be integrated.

On both sides of the absorbent main body 10, leg-surrounding cuffs C, C projecting toward the surface of use are formed, respectively. It is constituted by a member, for example, one elastic member made of thread rubber or a plurality of elastic members 50 as shown in the drawing.

More specifically, the upright cuff C is formed by doubling the upstanding sheet 40 and wrapping the respective elastic members 50, 50 ... in a state where they are fixed with a hot melt adhesive or the like. The upright sheet 40 forming each of the upright cuffs C, C is desirably not liquid-permeable but liquid-impermeable or hydrophobic. Alternatively, the liquid-permeable sheet such as a nonwoven fabric may be made to have a property of repelling liquid by a silicon treatment or the like. Further, it is desirable to have ventilation or vapor permeability.

The inner surface of the double upright sheet 40 is provided with an absorber A
B and the back surface side of the liquid-impermeable back sheet 12 are fixed by a hot melt adhesive or the like. As a result, this fixed starting end of the double upright sheet 40 forms the upright end of the upright cuff C.

The tip side from the upright end is a free portion that is not fixed to the product body.

On the other hand, at the front and rear ends in the longitudinal direction, the free portion is fixed to the article, specifically, to the outer surface of the liquid-permeable sheet 1 with the front end directed toward the center of the article by hot melt adhesive or the like. Have been.

The elastic members 50, 50,... Have a basic form in which at least one is at the free portion. In particular, the elastic member 50 is preferably at the tip of the free portion. , It is preferable to have the elastic member 50 also on the root side. It is more desirable to have a plurality of tips at the tip as shown.

FIG. 4 shows a state in which the disposable diaper is unfolded in the longitudinal direction. When the disposable diaper is attached, the disposable diaper is attached to the body in a boat shape, and the contracting force of each of the elastic members 50 acts. The upright cuffs C stand up around the legs due to the contraction force of the elastic members 50, 50. At this time, the side portion of the absorption main body 10 is deformed and lifted, and the absorber 3 is also lifted while being slightly deformed to form a deep pocket space.

The space surrounded by the right and left standing cuffs C, C forms a space for confining urine or loose stool. When urine is discharged into this space, the urine is absorbed into the absorbent element AB through the liquid-permeable top sheet 1, and the raised cuff C serves as a barrier for loose stool solids, preventing the stool from climbing over. Is done.

On the other hand, at the longitudinal ends of the front body F and the back body B, between the nonwoven fabrics of the outer sheet 1 at the waist W, in order to improve the fit around the waist,
Waist elastic members 20F and 20B made of thin thread rubber are arranged and fixed so as to extend and contract at intervals in parallel with the edge of the waist opening WO. The interval and the number of the waist elastic members 20F and 20B in the waist portion W can be appropriately determined.
８8 mm, and the number is preferably about 4-10.

With such a configuration, according to the present invention, the lower abdomen of the front body F and the buttocks of the back body B in the lower waist U between the waist W and the crotch L of the front body F and the back body B according to the present invention. The lower waist elastic member 21F along the circumferential direction,
21B is provided. And the lower back elastic member 21
F and 21B are provided on the left and right sides of the product in the front body F and the back body B, respectively, except for almost the entire absorbent core 13 in the portion from the joint 30 on one side to the joint 30 on the other side. I have.

In the illustrated example, these lower waist elastic members 21
F, 21B, thin thread rubber, specifically 620 in thickness
An elastic member having a dtex or less is used, and the vertical interval is 7.0 mm in both the front body F and the back body B.
15 to 40 pieces are arranged and fixed between the nonwoven fabrics of the outer sheet 1 in parallel. It is desirable that the distance between the lower waist elastic members 21F and 21B is equal to or shorter than the distance between the waist elastic members 20F and 20B.

The lower waist elastic members 21F, 21F
The rubber thread used as B is the waist elastic member 2 described above.
The elongation stress and the cross-sectional outer diameter may be smaller than those of the fine thread rubber used as 0, or may be substantially the same. As the fine thread rubber used here, specifically, those having an elongation stress of 4 to 17 g, particularly 5 to 10 g at the time of elongation of 150% are suitably used.

On the other hand, in the first embodiment, the crotch elastic members 23 are also provided on the left and right portions of the crotch portion L except for the central portion. Regarding the crotch elastic member 23,
Like the lower back elastic members 21F and 21B, the thickness is 620.
An elastic member of dtex or less can be arranged and fixed between the nonwoven fabrics with a vertical interval of 7.0 mm or less.

(Second Embodiment of Pants-Type Disposable Diaper) The second embodiment shown in FIGS. 7 and 8 differs from the first embodiment in that the crotch portion L has a crotch elastic member. 2
3, the lower waist elastic members 21F and 21B are arranged and fixed between the nonwoven fabrics continuously in the circumferential direction across the absorbent main body 10.

(Third Embodiment of Pants-Type Disposable Diaper) FIG. 9 is different from the first embodiment in that the crotch portion L is not provided with the crotch elastic member 23, and the waist elastic member 20F, 20B shows a structure similar to that of FIG. 3 in a structure in which only the side portions are provided without disposing them at the center. FIG. 10 shows a state of use.

(Fourth Embodiment of Pants-Type Disposable Diaper) FIG. 11 shows that the outer sheet 1 is
A and side seats 1B and 1B on both sides,
Each of the side sheets 1B and 1B is formed by fixing thread rubber in a mesh shape, for example, a lattice shape between non-woven fabrics. The side sheets 1B, 1B on both sides are joined to the width direction center sheet 1A, and the side sheets 1B, 1B are expanded and contracted in the circumferential direction and the front-back direction.
In this case, the thread rubber in the circumferential direction forms the elastic members of the waist part W and the waist lower part U.

(Supplementary Description and Other Embodiments of Pants-Type Disposable Diapers) In summary of the first to fourth embodiments, FIGS. 12A to 12D respectively. ). As can be inferred by comparing these, the waist elastic members 20F, 20B,
In addition, the lower waist elastic members 21F and 21B are composed of the absorption main body 1
A configuration in which the arrangement is fixed continuously in the circumferential direction across 0, and a configuration in which the absorption core 13 does not exist in the central portion and is arranged and fixed only in the left and right side portions of the product are selectively adopted. be able to. Further, the presence or absence of the provision of the crotch elastic member 23 can be selected. Further, the arrangement of the elastic members may be different between the front body F and the back body B.
Therefore, as shown in FIG. 12 (E) as another embodiment, the waist elastic members 20F and 20B and the lower waist elastic members 21F and 21B do not exist at the center where the absorbent core 13 is located. As shown in another embodiment in which the crotch elastic member 23 is not provided and the crotch elastic member 23 is not provided, and the waist elastic members 20F, 20B, The lower waist elastic members 21F and 21B do not exist in the central portion where the absorbent core 13 is located, but are arranged and fixed only on the left and right side portions of the product, and a form in which the crotch elastic member 23 is provided can also be adopted. It should be noted that the arrangement of the elastic members is appropriate as described above. When the lower waist elastic members 21F and 21B or the crotch elastic member 23 are not located at the center where the absorbent core 13 is located but are fixed only at the left and right side portions of the product, the lower waist elastic member 21F , 21B or the end of the crotch elastic member 23 overlaps the side edge of the absorbent core 13 and the case where the end does not reach the side edge of the absorbent core 13 and is separated.

In the above example, the rectangular absorbing body 10 is joined to the substantially hourglass-shaped outer sheet 1.
A form in which a liquid-permeable top sheet 11 having the same shape as the outer sheet 1 is provided, and the absorber AB is provided between them. Further, the outer sheet 1 and the absorption main body 10 may be integrated without a boundary.

The sheet constituting the outer surface of the product is formed by laminating and fixing two or more air-permeable and water-repellent nonwoven fabrics in the above example, but may be one nonwoven fabric. The elastic member 21 can be joined to the use surface side. Furthermore, a plastic sheet can be interposed between the nonwoven fabrics to be laminated, or can be bonded to the use surface side of the backside nonwoven fabric.

The lower waist elastic member 21F or the lower waist elastic member 21B may be arranged in a lattice network. This one
An example is the form shown in FIG. Also in this type of form, the elastic elastic member has a space in the longitudinal direction defined in the present invention.

Further, according to the present invention, at least the waist elastic member 20F and the lower waist elastic member 21F of the front body F are
As long as it exists over 60% or more, desirably 70% or more, more preferably 90% or more of the length of the waist portion T in the length range from the waist opening edge to the leg opening start end, the specified thickness and It is sufficient if there is an interval, and therefore, in the maximum 40% region, even if the lower back elastic member 21F does not have the thickness or the interval specified in the present invention, the overall refreshing feeling is not impaired. .

More specifically, referring to a specific example, as shown in an enlarged manner in FIG. 13, the length a of the waist elastic members 20F, 20F... Arranged at intervals of 7 mm or less and the lower waist elastic members 21F, 21F. In the arrangement, the ratio of the total length of the length ranges b and c of 7 mm or less to the length of the waist portion T (that is, (a + b + c) / T) is 60 excluding the length range portion exceeding 7 mm. % Or more.

On the other hand, as shown in FIG. 14, a design such as a character can be applied to the center of the product (substantially the entire area of the absorbent core), for example, by printing on the back side of the liquid-impermeable back sheet 12, as shown in FIG. . This design part,
Since the outer sheet 1 has the absorbent core 13 having a certain degree of rigidity and does not deform or wrinkle according to the present invention, the design of the outer sheet 1 can be clearly understood without collapse. Also, as shown in FIG.
If the front and back of the character are applied in accordance with the front and back of the product, anyone can distinguish front and back at a glance, making diaper changing fun and making the wearer happy. The designed design sheet may be interposed between the outer sheets. Also, design printing can be performed on the outer sheet 1.

By the way, in order to fit the crotch part or the crotch part, the external sheet 1 can be provided with an elastic member in various forms.

FIG. 15 shows that the crotch elastic members 24 and 24 extend from the end of the front side part to the end of the rear side part substantially parallel to the edge of the leg opening of the crotch part L. It is fixed to. In this embodiment, the crotch elastic member 24 contracts the leg opening LO to prevent leakage of body fluid.
In order to clearly show the crotch elastic members 24, 24, the absorption main body 10 is shown by a virtual line.

FIG. 16 shows the crotch and crotch extending from the end of the left side to the end of the right side so as to cross the crotch in the front body F and the back body B, respectively. The members 25F and 25B are fixed between the nonwoven fabrics of the outer sheet 1. In this example, the crotch and crotch elastic members 25F and 25B on the front body F side and the back body B side partially cross each other.

FIG. 17 shows the crotch and crotch extending from the end of the left side part to the end of the right side part so as to cross the crotch part in the front part F and the back part B, respectively. The members 26F and 26B are fixed between the nonwoven fabrics of the outer sheet 1. In this example, the crotch and crotch elastic member 2
6F and 26B are parallel to each other at the crotch without crossing.

On the other hand, as shown in FIG. 18, in the crotch portion, the width of the outer sheet 1 can be made smaller than the width of the absorbent main body 10, particularly the width of the absorbent core 13. This FIG.
In the embodiment and the above-described embodiment, the outer sheet 1 protruding outward from the side edge of the absorbent core 13 tends to flicker.
This is a problem when trying to obtain a clean feeling throughout the product. Therefore, like the crotch elastic member 23 of the first embodiment,
By providing the shaping elastic members 27 on both sides of the crotch portion L between the nonwoven fabrics of the outer sheet 1 and moving the protruding outer sheet 1 to the center side, it is possible to eliminate the flickering feeling. In this case, by fixing the outer ends of the shaping elastic members 27 with the seal wire 28 made of a hot melt adhesive, it is possible to prevent the outer ends of the shaping elastic members 27 from being drawn into the center.

FIG. 19 also shows the front body F and the back body B at the end of the right side so as to cross the crotch from the end of the left side in order to eliminate the flickering feeling. Across
The shaping elastic members 29, 29 are fixed between the nonwoven fabrics of the outer sheet 1 respectively. In this embodiment, the outer peripheral sheet 1 protruding outward from the side edge of the absorbent core 13 is moved toward the center by an intermediate circumferential portion of the shaping elastic member 29.
The feeling of flickering can be eliminated, and the end of the shaping and stretching member 29 extends over the end of the side, so that the crotch acts to lift the waist to the side of the torso T, eliminating the slack of the abdomen and buttocks. , It will be more refreshing.

(First Embodiment of Tape-type Disposable Diaper)
As described above, the present invention is directed to a tape-type disposable diaper as well as a pants-type disposable diaper. This first embodiment is shown in FIG. 20 and FIG. In this example,
Standing sheets 41, 41 are provided on both sides, and elastic members 51, 51 are provided at the distal ends of these free standing portions, thereby forming standing cuffs C, C. The upright sheet 41 is joined to the back sheet 1 similar to the outer sheet. Reference numeral 42 denotes a tape fastener for bringing the left and right side portions on the back side to the left and right side portions on the abdomen side and joining them. In this example, at the longitudinal ends of the front body F and the back body B, between the nonwoven fabrics of the outer sheet 1 at the waist portion W, in order to enhance the fit around the waist, parallel to the edge of the waist opening WO. Waist elastic members 20F and 20B made of fine thread rubber are arranged and fixed so as to extend and contract at intervals. Further, lower back elastic members 21F and 21B are provided along the circumferential direction on the lower abdomen of the front body F and the buttocks of the back body B along the circumferential direction except for the central part.

(Second Embodiment of Tape-type Disposable Diaper)
A second embodiment is shown in FIGS. This form is an example without a standing cuff. And the absorption core 1
3 along the longitudinal direction of the outer flap portion of the elastic member 52,
52 is fixed between the liquid-permeable top sheet 11 and the back sheet 12. Also in this example, the waist elastic members 20F and 20B and the lower waist elastic members 21F and 2F are used.
1B is provided.

(Regarding the elastic member) As the above elastic member, in addition to materials such as natural rubber and synthetic rubber, elastic elastic members such as urethane can be used. Also,
A narrow elastic band or a sheet having a large area can be used. Examples of these include bands such as urethane, films or sheets. As the film, a non-porous film or a perforated film, and as the sheet, a mesh-like sheet or the like can be appropriately selected. FIG. 24 shows an example of the arrangement of the non-porous film 60. FIG. 25 shows an example of the arrangement of the mesh film 61. Also in these modes, it is important that the region where the elastic member is attached to the outer sheet 1 of the product exists over a length range of 60% or more of the waist portion.

(Example) After changing the thickness and the arrangement interval of the elastic members at the lower back, the state of wrinkles generated on the outer surface of the obtained product is shown in Table 1. Was.

[0067]

[Table 1]

From these results, it is found that both the thickness of the elastic member and the vertical interval are involved in the formation of wrinkles, and that only those within the range specified in the present invention are wrinkled, and are fine-grained and have excellent appearance. It can be seen that a product exhibiting

[0069]

As described above, according to the present invention, the wrinkles are not conspicuous, and the appearance of the product is clear, and further, advantages such as excellent fitting properties are provided.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the occurrence of wrinkles in a conventional product.

FIG. 2 is a schematic diagram showing the occurrence of wrinkles in the product of the present invention.

FIG. 3 is a plan view of the first embodiment as viewed from an unfolded use surface side, for explaining the terms of the present invention.

FIG. 4 is a plan view of the first embodiment as viewed from an unfolded use surface side.

FIG. 5 is a view taken on line 5-5 of FIG.

FIG. 6 is a perspective view of the product according to the first embodiment.

FIG. 7 is a plan view of the second embodiment from the side in which the developed state is used.

FIG. 8 is a perspective view of a product according to the second embodiment.

FIG. 9 is a plan view of a third embodiment from the side of a deployed use surface.

FIG. 10 is a perspective view of a product according to a third embodiment.

FIG. 11 is a plan view of a fourth embodiment viewed from a use surface side in an unfolded state.

FIG. 12 is an explanatory diagram of an arrangement form of an elastic member.

FIG. 13 is an explanatory diagram relating to a disposition ratio of an elastic member.

FIG. 14 is a diagram showing a design example of front and back of a product.

FIG. 15 is a plan view of another embodiment from the side in which the developed state is used.

FIG. 16 is a plan view of another embodiment from the side of the use surface in a developed state.

FIG. 17 is a plan view of a further embodiment of the present invention, as viewed from a deployed use surface side.

FIG. 18 is a plan view of the form in which the shaping elastic member is provided, as viewed from the use surface side in the developed state.

FIG. 19 is a plan view of another form provided with a shaping elastic member as viewed from a use surface in a developed state.

FIG. 20 is a plan view of the tape-type disposable diaper according to the first embodiment, as viewed from a use surface side in an unfolded state.

FIG. 21 is a position arrow view corresponding to the line 5-5.

FIG. 22 is a plan view of the tape-type disposable diaper according to the second embodiment, as viewed from the side in which the tape-type disposable diaper is used.

FIG. 23 is a view as viewed from the position corresponding to line 5-5.

FIG. 24 is a plan view of the embodiment in which another elastic member is provided, as viewed from the use surface side in the unfolded state.

FIG. 25 is a plan view of the embodiment provided with another telescopic member as viewed from the side of the deployed use surface.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer sheet, 4 ... Inseam, 10 ... Absorbent, 12 ... Back sheet, 13 ... Absorbent core, Ab ... Absorber, C ... Barrier cuff, 20 ... Waist elastic member, 21b, 21f
... lower waist elastic member, 23 ... crotch elastic member, T ... waist circumference, u ... lower waist, l ... crotch, w ... waist, wO ... waist opening, lo ... leg opening.

Continued on the front page F term (reference) 3B029 BD10 BD13 BF07 4C098 AA09 CC02 CC03 CC12 CC14 CE05 CE06 CE07 DD04 DD06 DD10 DD12 DD22 DD23 DD25

Claims (10)

[Claims] In use, a waist opening and left and right leg openings are formed, and at least a waist opening portion extending from the waist opening edge to the leg opening start end in a circumferential direction and in a vertical direction. A disposable disposable diaper having a large number of elastic members having an interval, wherein the elastic member having a thickness of 620 dtex or less at least in a front body constitutes an outer surface of the product with the interval being 7.0 mm or less. The disposable disposable diaper characterized in that the area attached to the disposable diaper extends over a length range of 60% or more of the waist portion. 2. A waist opening and left and right leg openings are formed in a use state, and at least along a circumferential direction and in a vertical direction at a waist circumference in a length range from the waist opening edge to the leg opening start end. A disposable disposable diaper having a large number of elastic members having an interval, wherein the elastic member having a thickness of 620 dtex or less at least in a front body constitutes an outer surface of the product with the interval being 7.0 mm or less. A disposable disposable diaper, wherein a region attached to the disposable diaper extends over a length range of 60% or more of the waist portion and exists only on the left and right side portions excluding a center portion. 3. A waist opening and left and right leg openings are formed in a use state, and at least along a circumferential direction in a waist circumference portion extending from the waist opening edge to the leg opening start end in a circumferential direction and vertically. A disposable disposable diaper having a plurality of elastic members having intervals and having a semi-rigid absorbent core along a longitudinal direction, wherein at least a front body has a thickness of 620 dtex or less, and the elastic member has a distance of 7 mm or less. The area attached to the sheet constituting the outer surface of the product in a state of not more than 0.0 mm extends over 60% or more of the length of the waist portion and exists only on the left and right side portions excluding the center portion. A disposable disposable diaper characterized by that. 4. A waist opening and left and right leg openings are formed in a use state, and the waist opening extends in the circumferential direction at least in a length range from the waist opening edge to the leg opening start end in a circumferential direction and vertically. A disposable disposable diaper having a large number of elastic members having an interval, wherein the elastic member having a thickness of 620 dtex or less at least in a front body constitutes an outer surface of the product with the interval being 7.0 mm or less. The area attached to the body extends over 60% or more of the length of the waist, and only the left and right sides excluding the center and the center of the crotch in the length range forming the leg opening. A disposable disposable diaper, wherein the disposable disposable diaper is present only in the left and right portions excluding the above. 5. An absorbent body having an absorbent core is disposed over the front and rear bodies on an inner surface side of a multi-layered outer sheet constituting an outer surface of a product, and in use, a waist opening and left and right leg openings. A disposable disposable diaper having a number of elastic members extending along a circumferential direction and having a vertical interval at least in a waist circumference portion of a length range from the waist opening edge to the leg opening start end, wherein at least a predecessor is provided. Around 620 in thickness
The region where the elastic member of dtex or less is attached to the sheet constituting the outer surface of the product with the distance set to 7.0 mm or less extends over 60% or more of the length of the waist portion. An existing disposable disposable diaper characterized by the following. 6. The disposable disposable diaper according to claim 1, wherein an extension ratio of the elastic member is 150 to 350%, and an extension stress is in a range of 4 to 17 g at 150% extension. 7. A waist portion of a length range from a waist opening edge to a leg opening start end, wherein the elastic member is located at a position within 30 mm in a vertical direction from the waist opening edge and extends from a leg opening start end to a waist opening edge side. 7. Mounted over a length range up to a position within 10 mm.
The disposable disposable diaper according to any one of the above. 8. An elastic member having a thickness of 620 dtex or less,
The disposable paper diaper according to any one of claims 1 to 7, wherein five or more diapers are arranged adjacently at an interval of 7.0 mm or less. 9. A waist opening and left and right leg openings are formed in a use state, and a stretchable member is provided along a circumferential direction at least at a waist portion extending from the waist opening edge to the leg opening start end. In the disposable disposable diaper, the elastic member is a mesh elastic member, and at least in the front body, an area where the mesh elastic member is attached to a sheet constituting an outer surface of the product is 60% of the waist portion. A disposable disposable diaper which is present over a length range of at least%. 10. A waist opening and left and right leg openings are formed in a use state, and a stretchable member is provided along a circumferential direction at least in a waist circumference portion extending from the waist opening edge to the leg opening start end. In a disposable paper diaper, the elastic member is a non-perforated or perforated film-like elastic member, and at least in the front body, an area where the film-like elastic member is attached to a sheet constituting an outer surface of the product. A disposable paper diaper which extends over a length range of 60% or more of the waist portion.