JP2004305772A - Disposable diaper and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper which feels soft in the girth part, has good usability such as prevention of leaved marks due to the diaper and in which the cost of manufacturing can be cut down, and a manufacturing method thereof. <P>SOLUTION: The diaper 100 in which an adhesive B is attached only to fixation parts A fixing a back sheet 20 with rubber threads 25, is a shorts type disposable diaper 100 in which the rubber threads 25 are fixed to a front girth part 20a and a back girth part 20c in the back sheet 20 by adhesive. The diaper 100 can be manufactured by sticking the rubber threads 25 whose approximately entire circumference is applied with an adhesive, to the back sheet 20 without applying the adhesive to the entire girth part in the back sheet 20. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disposable disposable diaper.

  Conventionally, a disposable paper diaper (hereinafter, referred to as a paper diaper) includes a paper diaper main body including a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber interposed therebetween. It is configured. In such a disposable diaper, an elastic member such as thread rubber is appropriately provided on a top sheet or a back sheet so that the disposable diaper has elasticity, thereby fitting the disposable diaper to a wearer's body shape, such as a waist circumference and a leg circumference. There is something we can do.

When an elastic member is provided on a disposable diaper, a member such as a nonwoven fabric constituting a top sheet or a back sheet is laminated or folded, and a thread rubber or the like is sandwiched between the members, and an adhesive such as a hot melt is used. A method of fixing is performed.
In particular, at the part around the waist of the disposable diaper, the waist around the waist of the disposable diaper should be adjusted so that the disposable diaper does not slip or slip off during use, and that the wearer is not tightened with the disposable diaper. A large number of thread rubbers are provided at predetermined intervals at locations where they are to be formed, and the waist portion of the disposable diaper is wide and gently expanded and contracted.

However, in such a disposable diaper, in order to provide a large number of thread rubbers around the waist, a wide range of adhesive is applied to a nonwoven fabric or the like constituting the waist portion, and the thread rubber is sandwiched and fixed. While the waist part expands and contracts, it is hardened by the adhesive. For this reason, the feeling of use may be deteriorated, for example, the feel at the time of use may be deteriorated, or a diaper mark may be left around the wearer's torso.
In addition, since a large amount of adhesive is used to fix a large number of elastic members to a wide area, the production of disposable diapers is costly.

  An object of the present invention is to provide a disposable disposable diaper and a method for producing a disposable disposable diaper, which have a soft feel at the waist circumference, can prevent the formation of diaper marks, have a good usability, and can reduce the production cost. .

In order to solve the above-mentioned problem, the invention according to claim 1 is, for example, as shown in FIGS. 1 and 2, a sheet member (a front waist portion 20 a and a rear waist portion 20 c) forming a waist portion (a front waist portion 20 a). In a disposable disposable diaper (100) in which an elastic member (thread rubber 25) is fixed to the back sheet 20, the gather holding sheet 27) with an adhesive, a fixing portion (A) to the elastic member is provided around the waist of the sheet member. ), The adhesive (B) is attached to either the vicinity (C) of the fixed portion or the portion extending from the fixed portion (A) to the vicinity (C).
Here, the fact that the adhesive is attached to any one of the fixing portion, the vicinity of the fixing portion, or the portion extending from the fixing portion to the vicinity means that the sheet member and the sheet member are not the entire waist portion of the sheet member. This means that the adhesive is intermittently applied to the places where the elastic members are fixed to each other.

  According to a second aspect of the present invention, in the disposable diaper according to the first aspect, an adhesive is attached to substantially the entire periphery of the elastic member.

  According to a third aspect of the present invention, there is provided a method for manufacturing a disposable disposable diaper in which an elastic member is fixed to a sheet member forming a waist portion by an adhesive, wherein an adhesive is applied to substantially the entire periphery of the elastic member. And a second step of fixing the elastic member to which the adhesive has been applied to the waist portion of the sheet member.

  The invention according to claim 4 is the method for manufacturing a disposable disposable diaper according to claim 3, wherein the first step applies an adhesive to substantially the entire periphery of the elastic member.

According to the first aspect of the present invention, the adhesive is intermittently applied to the waist portion of the sheet member, so that the adhesive is applied to the sheet member as compared with the case where the adhesive is applied to the entire waist portion. And hardening is reduced. Therefore, the disposable diaper configured with the sheet member and the elastic member has a waist portion that is softened, so that the feel of the wearer's waist portion during use becomes good, and the wearer's waist portion is improved. The disposable paper diaper can be prevented from being rubbed with the disposable diaper or having traces of the diaper, and can be formed into a disposable disposable diaper having a good usability.
Further, since the amount of the adhesive can be reduced as compared with the case where the adhesive is applied to the entire waist portion of the sheet member, the cost can be reduced in the manufacture of disposable diapers.

  According to the second aspect of the present invention, the effect of the first aspect of the invention is of course exerted, and the adhesive is attached to substantially the entire periphery of the elastic member, so that the bonding area of the elastic member is maximized. As a result, the elastic member and the sheet member forming the waist portion can be adhered with a sufficient adhesive force.

According to the third aspect of the present invention, the first step of applying the adhesive to the elastic member without applying the adhesive to the sheet member forming the waist portion of the disposable diaper; Since the disposable disposable diaper is manufactured in the second step of fixing to the waist, the area of the adhesive applied to the waist can be reduced as compared with the case where the adhesive is applied to the waist of the sheet member. It is possible to manufacture a disposable diaper having a soft feel at the waist and a good feeling of use.
In addition, the application area of the adhesive can be reduced as compared with the case where the adhesive is applied to the entire body circumference, and the step of applying the adhesive to the sheet member can be omitted, thereby reducing the manufacturing cost of the disposable diaper. it can.

  According to the invention as set forth in claim 4, by applying the adhesive to substantially the entire periphery of the elastic member, the bonding area of the elastic member can be used to the utmost, and the sheet member and the elastic member can be separated from each other. It can be fixed with a sufficient adhesive force. Therefore, the elastic member can be suitably fixed to the sheet member by reducing the application area of the adhesive to the waist portion, and a paper diaper with a soft feel at the waist portion can be manufactured.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a pants-type disposable paper diaper 100 (hereinafter, referred to as a disposable diaper 100) as an example of the present invention, and FIG. FIG. FIG. 3 is a sectional view of the disposable paper diaper 100 of FIG.
The disposable diaper 100 mainly includes a top sheet 10, a back sheet 20 as a sheet member, a thread rubber 25 as an elastic member, an absorber 30, a gather sheet 40, a waist circumference leakage prevention sheet 50, and a waterproof film. 60 are provided.

  The absorbent body 30 absorbs water-like components such as urine when the disposable diaper 100 is used, and combines an absorbent material such as cotton or pulp, or a sheet-like base material such as fiber or film with a highly water-absorbent resin. And a packaging part 32 made of absorbent nonwoven fabric or paper containing the absorbing part 31. The absorber 30 has a certain width and length (for example, a substantially rectangular shape as shown in FIG. 2) so that the absorber 30 is mounted at a position extending from around the front torso of the human body to between the legs and around the rear torso. ) Formed.

The top sheet 10 is formed of a liquid-permeable nonwoven fabric and has a shape covering the surface side of the absorber 30.
As a material of the nonwoven fabric forming the top sheet 10, any of natural fibers and synthetic fibers may be used. Examples of natural fibers include cotton, cellulose (wood pulp), wool, silk and the like. Examples of the synthetic fiber include polypropylene (PP), polyethylene (PE), nylon, polyester (PET, etc.), acrylic, and the like, and the above materials such as PE / PP mixed fiber, PE / PET mixed fiber are appropriately combined. Bicomponent fibers (mixed fibers) can also be used.

  The fiber of the material forming the nonwoven fabric of the top sheet 10 is preferably 1.0 to 4.0 d (denier).

Cotton is blended into the nonwoven fabric forming the top sheet 10 regardless of whether natural fibers other than cotton or synthetic fibers are used as the material. This is because a nonwoven fabric containing cotton is softer than a nonwoven fabric containing no cotton and can form a nonwoven fabric having a good feel.
The amount of the cotton compounded varies depending on the type of the other material forming the nonwoven fabric, but it is preferable that the cotton be less than 3.0% by weight based on the entire fibrous material. If the content is 3.0% by weight or more, the moisture such as body fluids absorbed by the cotton may return to the surface layer and give the wearer a daunting sensation.

  As a method for producing a nonwoven fabric from these fibrous materials, a known method can be appropriately used, for example, any method such as a chemical bond, a thermal bond, or spunlace may be used. It may be manufactured by any method such as a spun bond method, a melt blow method, or a combination of these methods and the above-mentioned bonding method.

The basis weight of the nonwoven fabric forming the top sheet 10 is preferably 18 to 30 g / m ² . If the weight is 18 g / m ² or less, the durability of the nonwoven fabric may be reduced by the movement of the user of the disposable diaper 100, and the absorbability may be reduced. Further, if it is at least 30 g / m ² , the operability in the production of nonwoven fabric may be reduced, and the production cost may be increased.

  In the nonwoven fabric forming the top sheet 10, urine and the like are allowed to penetrate into the absorber 30 side and, for example, to reduce stickiness when wet with urine or the like, to an appropriate degree for a hydrophilic material. It is preferable to perform appropriate processing such as performing hydrophobic processing or water-repellent processing, or in the case of a hydrophobic material, partially performing a hydrophilic treatment. Such processing can be performed by applying a known processing method to the nonwoven fabric formed by entanglement of the fibers by the above method.

Furthermore, the nonwoven fabric forming the topsheet 10 is processed so that the tips of the fibers are not fluffed from the surface of the nonwoven fabric to smooth the surface (hereinafter, referred to as smooth processing).
In the present embodiment, the smoothing is performed by applying pressure to the surface of the nonwoven fabric so as to press down the fibers that fluff on the surface of the nonwoven fabric so that the fibers are repelled to the surface of the nonwoven fabric.
As a method of applying pressure to the surface of the nonwoven fabric, there is a method of sandwiching the nonwoven fabric between rollers and applying pressure from both front and back surfaces. For example, it can be performed by sandwiching the nonwoven fabric between two rollers, rolling the roller on the surface of the nonwoven fabric, or sandwiching the nonwoven fabric between two surfaces such as a plate.
By this smoothing, the surface of the nonwoven fabric is smoothed due to the suppression of fluff, and the nonwoven fabric has a small frictional resistance and a good feel.
Further, as a method of the smooth processing, a method of cutting and smoothing the fibers on the fluffy surface may be used.

Regarding the frictional resistance of the nonwoven fabric of the top sheet 10, in terms of the average deviation (MMD value) of the friction coefficient, it is desirable that the MD (Machine Direction) is 0.01 to 0.50 and the CD (Cross Direction) is 0.01 to 0.70. If the MMD value is larger than these values, the smoothness is reduced, and the skin or the like in contact with the nonwoven fabric is rubbed, and the skin becomes red, and the usability when used as the paper diaper 100 may be deteriorated. .
The smooth processing may be performed at the final stage after the nonwoven fabric is subjected to hydrophobic processing or the like, or may be performed during the various processing steps after the fibers are entangled.

  The waterproof film 60 is formed of a resin such as PE. The waterproof film 60 is a porous film in which voids are formed in a sheet by adding calcium carbonate or the like to a resin raw material at the time of manufacture, and is subjected to a hydrophobic treatment or a water-repellent treatment to improve air permeability. It has a performance as a waterproof film having the same.

  The waterproof film 60 is provided so as to cover the back surface of the absorber 30 and sandwich the absorber 30 with the top sheet 10 as shown in the cross-sectional view of FIG. Further, both sides of the waterproof film 60 extend laterally, and the gather sheet 40 is provided along the both sides as described later.

The gather sheet 40 is formed of an air-through nonwoven fabric manufactured by an air-through method using the same fibrous material as the top sheet 10. The air-through nonwoven fabric used in the present embodiment has a coarser fiber, a larger fiber diameter, and a softer property than a melt-blown nonwoven fabric.
The air-through nonwoven fabric is manufactured by blowing hot air to a plurality of types of fibers having different melting points to melt and entangle some of the fibers.
In the nonwoven fabric forming the gather sheet 40, the higher the hydrophobicity or water repellency is, the more effective it is in preventing leakage of urine and the like. Therefore, it is desirable to use a material having high hydrophobicity or water repellency as the fiber of the material, or to subject the nonwoven fabric or the fiber of the material to hydrophobic or water-repellent treatment.

The gather sheet 40 is formed to be long, and two are provided, one along each of both sides of the waterproof film 60. The gather sheet 40 is attached to the side of the waterproof film 60 so as to sandwich the waterproof film 60 over the front and back surfaces of the side of the waterproof film 60, and is provided so as to project toward the top sheet 10.
Thread rubbers 43 are provided along the side ends of the gather sheet 40 that extend toward the top sheet 10, and the end parts 40 a are folded back as shown in FIG. Each is fixed.

  With such a configuration, a three-dimensional gather formed by the gather sheet 40 and the side part of the waterproof film 60, which stands on the top sheet 10 side from both sides of the absorber 30, is formed. The portion composed of the top sheet 10, the waterproof film 60, and the absorber 30 is referred to as an absorbing portion 35.

  The backsheet 20 is formed of a liquid-impermeable nonwoven fabric. This liquid-impervious non-woven fabric is made of polypropylene (PP), polyethylene (PE), nylon, polyester (PET, etc.), acrylic, etc., or a polyester / PE mixed fiber, PE / PET mixed fiber, etc. Using a component fiber (mixed fiber) or the like, it can be manufactured by the same manufacturing method as that of the top sheet 10. However, in order to make the liquid impermeable, it is desirable to form the material with high hydrophobicity or water repellency. The nonwoven fabric is subjected to a process of increasing hydrophobicity or water repellency.

  The backsheet 20, when using the disposable diaper 100, covers the front waistline portion 20a, the crotch portion 20b, and the rear waistline portion so as to cover a position extending from the front waistline of the wearer to the rear waistline between the legs. 20c are formed. The front waist portion 20a and the rear waist portion 20c are collectively referred to as a waist portion. The front waist part 20a and the rear waist part 20c are formed wider than the crotch part 20b, and when forming the disposable diaper 100, the side end part of the front waist part 20a and the side end of the rear waist part 20c The sections are each secured to form a pant-shaped configuration.

In the back sheet 20, a gather pressing sheet 27 as a sheet member is attached and provided on the human body side during use. The gather pressing sheet 27 is formed of a liquid-impermeable nonwoven fabric manufactured by the same manufacturing method as that of the top sheet 10 using the same fibrous material as that of the back sheet 20.
In addition, between the gather holding sheet 27 and the back sheet 20, at the positions of the front waistline portion 20a and the rear waistline portion 20c, as shown in FIG. 2 and FIG. A plurality of thread rubbers 25 are sandwiched and fixed in a direction along the waist of the user (in a direction substantially parallel to the waist). Although FIG. 3A shows the rear waistline portion 20c, the method of fixing the rubber thread 25 to the back sheet 20 and the gather holding sheet 27 and the shape of attaching the rubber thread 25 to the front waistline are described. The same applies to the portion 20a.

Here, a method of fixing the thread rubber 25 to the front waistline portion 20a or the rear waistline portion 20c will be described.
First, an adhesive such as hot melt is applied to substantially the entire circumference of the thread rubber 25 (first step). Thereafter, the thread rubber 25 to which the adhesive has been applied is adhered to the nonwoven fabric forming the back sheet 20 and the gather pressing sheet 27 (second step).
As shown in FIG. 4A, as a method of applying the adhesive to substantially the entire circumference of the thread rubber 25, a member 81 having a V-shaped groove is used while supplying the adhesive to the bottom of the groove. As shown in FIG. 4B, an application method using a comb gun that passes the thread rubber 25 through the groove, an application method using an omega member that applies an adhesive to the thread rubber 25 using an omega (Ω) -shaped ring member, An application method using a control seam in which the thread rubber 25 is entangled and passed through the member 83 to be bent, and an adhesive is applied.

By the method described above, the thread rubber 25 coated with an adhesive is applied to the back sheet 20 and the gather pressing sheet 27 so as to be applied to the entire circumference of the paper diaper 100, so that the front waist portion 20a and the rear waist portion 20c of the disposable diaper 100 are formed. The non-woven fabric to be formed has a configuration in which the adhesive is attached only to the fixing portion of the thread rubber 25 or a portion extending from the fixing portion to the vicinity.
The fixing portion is a portion where the thread rubber 25 is adhered to the back sheet 20 and the gather holding sheet 27, and is indicated by A in FIGS. 2 and 3B. The phrase “from the fixed portion A to the vicinity (indicated by C)” means a state in which the adhesive B spreads around the fixed portion A when the rubber thread 25 is fixed. If the adhesive B is widely distributed around the fixing portion A, the softness of the waist portion of the back sheet 20 is impaired.
Since the thread rubber 25 is provided in the nonwoven fabric forming the front waistline portion 20a and the back waistline portion 20c of the backsheet 20, the disposable diaper 100 can be stretched around the wearer's waist and waist during use. It is formed so that it becomes.

Absorbing portions 35 are provided on the gather holding sheet 27 attached to the back sheet 20 so as to extend to the front waist portion 20a and the rear waist portion 20c with the crotch portion 20b as a center. The back side (the waterproof film 60 side) of the absorbing section 35 is fixed to the gather pressing sheet 27.
In addition, between the back sheet 20 and the gather holding sheet 27, thread rubbers 23 are provided at places such as both sides of the crotch portion 20b, so that the wearer can be fitted when the disposable diaper 100 is used. ing.
The absorbent section 35 including the top sheet 10 and the absorbent body 30 and the back sheet 20 constitute a diaper main body. A portion formed by the front waistline portion 20a and the rear waistline portion 20c of the backsheet 20 is defined as a waistline portion of the disposable diaper 100.

  The waist circumference leakage prevention sheet 50 is arranged on the top sheet 10 side of the diaper main body, from the end 20aa of the front waistline portion 20a and the end 20ca of the rear waistline portion 20c, on the ends 30a and 30b of the absorber 30. A total of two are provided over the covering position. As shown in FIGS. 2 and 3A, the waist circumference leakage prevention sheet 50 is fixed to the front waist portion 20 a or the rear waist portion 20 c on the gather holding sheet 27, and the absorbing portion 35. The portions 50a and 50b that cover the ends 30a and 30b of the absorbing portion 35 are free ends without being fixed, and form pockets on the ends 30a and 30b of the absorbing portion 35. With such a configuration, the waist circumference leakage prevention sheet 50 prevents the urine and the like from leaking from the parts around the front waist and the back waist of the wearer when the disposable diaper 100 is used.

The waist circumference leakage prevention sheet 50 is formed using a nonwoven fabric having high hydrophobicity or water repellency. This liquid-impervious nonwoven fabric can be manufactured using the same fibrous material as that of the backsheet 20 and by the same manufacturing method as that of the topsheet 10. However, the nonwoven fabric of the PE / PP bicomponent manufactured by the spunbonding method is used. Is used, the soft waist circumference leakage prevention sheet 50 can be formed.
The waist circumference leakage prevention sheet 50 is desirably formed of a material having high hydrophobicity or water repellency, and desirably subjected to a process of increasing hydrophobicity or water repellency on the nonwoven fabric.

According to the disposable diaper 100 according to the present invention described above, the adhesive is adhered to the front waistline portion 20a and the rear waistline portion 20c of the back sheet 20 and the gather holding sheet 27 only at the positions where the thread rubber 25 is fixed. Therefore, the adhesive is intermittently adhered to the waist portion, and the back sheet 20 is made of the adhesive as compared with the case where the adhesive is applied to the entire waist portion (20a, 20c). Hardening is reduced. Accordingly, the waist portion (20a, 20c) of the paper diaper 100 is softly formed, so that the feel of the paper diaper 100 around the waist of the wearer during use is improved. Therefore, the wearer's waist circumference can be prevented from being rubbed with the disposable diaper 100 and the diaper traces can be prevented, so that the disposable disposable diaper 100 having a good feeling of use can be formed.
Further, since the amount of the adhesive can be reduced as compared with a case where the adhesive is applied to the entire front waist portion 20a and the rear waist portion 20c of the back sheet 20, the cost can be reduced in the manufacture of the disposable diaper.
Furthermore, since the adhesive is attached to substantially the entire circumference of the thread rubber 25, the thread rubber 25 and the back sheet 20 can be more firmly adhered.

In addition, a first step of applying an adhesive to the thread rubber 25 without applying an adhesive to the entire front waist portion 20a and 20c of the back sheet 20 and the gather holding sheet 27, and applying the thread rubber 25 to the back sheet The paper diaper 100 is manufactured by the second step of fixing the waist around the waist 20 (the front waist 20a and the back waist 20c), so that the adhesive is applied to the entire waist of the back sheet 20. In comparison, the application area of the adhesive to the waist circumference (20a, 20c) can be reduced. Accordingly, it is possible to manufacture the disposable diaper 100 having a soft feeling of the waist circumference portions (20a, 20c) and a good feeling of use.
In addition, since the adhesive application area can be reduced and the step of applying the adhesive can be omitted as compared with the case where the adhesive is applied to the entire waist portion, the manufacturing cost of the disposable diaper 100 can be reduced. Further, by reducing the amount of the adhesive applied, problems such as the adhesive oozing out from the back sheet 20 are reduced, and the workability in manufacturing the disposable diaper 100 is improved, which is preferable.

  In addition, by applying the adhesive to substantially the entire circumference of the thread rubber 25, the back sheet 20 and the thread rubber 25 can be fixed with a stronger adhesive force. Therefore, the thread rubber 25 can be suitably fixed to the back sheet 20 by reducing the application area of the adhesive to the waist circumference.

  Further, as a modified example of the present invention, the adhesive B is applied to the fixed portion A of the waist portion of the back sheet of the disposable diaper, or the vicinity C of the fixed portion A, or the portion from the fixed portion A to the vicinity C, and the thread rubber is applied. You may stick and fix. By fixing the thread rubber in this manner, a paper diaper having a soft feel around the waist can be formed in which the adhesive is adhered only to the affixed portion of the waist of the back sheet or to the vicinity of the affixed portion and the vicinity thereof.

Note that the present invention is not limited to the above embodiment.
For example, the fixing method of the thread rubber as in the present embodiment may be performed only on one of the front waistline portion and the rear waistline portion.
Further, the disposable disposable diaper of the present invention may be applied to a disposable disposable diaper of a type in which a front waist part and a rear waist part are detachably attached to both sides of a user, in addition to a pants-type disposable diaper, It may be applied to any of adults and children.
In addition, it is of course possible to apply the present invention to a disposable diaper that is not provided with a waistline leakage prevention sheet or a gather sheet. Further, a waterproof film that covers the back side of the absorber and a waterproof film that forms the three-dimensional gathers may be formed as separate members.
Also, it is preferable that the nonwoven fabric containing the cotton (preferably less than 3.0%) be formed into a nonwoven fabric forming the gather holding sheet and the waistline leakage prevention sheet, similarly to the top sheet, since the feel becomes soft. In addition, if the non-woven fabric is made of a non-woven fabric that has been subjected to the above-described smooth processing (preferably processed so that the MD is 0.01 to 0.50 and the CD is 0.01 to 0.70 in MMD value), the feel becomes smooth and the disposable diaper The feeling of use becomes good.

It is a perspective view showing an example of a disposable paper diaper to which the present invention is applied. FIG. 2 is a plan view showing a state in which the disposable diaper of FIG. 1 is cut open on both sides and opened. FIG. 3A is a cross-sectional view of the disposable paper diaper shown in FIG. 2, and FIG. 3B is a cross-sectional view illustrating a fixing portion between a back sheet and thread rubber. It is a perspective view which shows the example of the method of apply | coating an adhesive agent to thread rubber | gum, The application method (a) by a comb gun, and the application method (b) by a control seam.

Explanation of reference numerals

20 Back sheet (sheet member)
20a Front waist area (waist area)
20c Rear waist circumference (waist circumference)
27 Gather presser sheet (sheet member)
25 thread rubber (elastic member)
100 disposable diapers (disposable disposable diapers)
A fixing part B adhesive

Claims (4)

In a disposable disposable diaper in which an elastic member is fixed by an adhesive to a sheet member forming a waist portion,
An adhesive is attached to the waist portion of the sheet member, either at a portion fixed to the elastic member, in the vicinity of the fixed portion, or at a portion extending from the fixed portion to the vicinity. Disposable diapers.   The disposable disposable diaper according to claim 1, wherein an adhesive is attached to substantially the entire periphery of the elastic member. In a method for manufacturing a disposable disposable diaper in which an elastic member is fixed to a sheet member forming a waist portion by an adhesive,
A first step of applying an adhesive to the elastic member;
Next, a second step of fixing the elastic member to which the adhesive has been applied to the waist portion of the sheet member,
A method for producing disposable disposable diapers, comprising:   The method for manufacturing a disposable disposable diaper according to claim 3, wherein in the first step, an adhesive is applied to substantially the entire periphery of the elastic member.

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