JPH0884747A - Pants-type disposable diaper and manufacturing method thereof - Google Patents

Abstract

(57) [Summary] [Purpose] A pants-type disposable diaper with excellent wearing comfort and an efficient manufacturing method thereof. [Composition] A pants-type diaper that is composed of an absorbent main body and a pants-type exterior member, and has elastic elasticity around the waist, and the elastic elasticity of the leg openings is on both sides in the width direction of the absorbent main body. Elasticity members provided near the center and elastic members provided at predetermined portions of the leg-shaped openings of the pant-type exterior member are provided, and the leg-elasticity elastic members and waist elastic portions on both sides of the pant-type exterior member are provided. A pants-type disposable diaper and a method for manufacturing the same, wherein the member and a part of the elastic elastic member of the front body are installed while being continuously replaced in the manufacturing process of the pants-type exterior member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper which is preliminarily formed in a pants type and a manufacturing method thereof.

[0002]

2. Description of the Related Art In a conventional disposable diaper, for example, in a side flap of a flat type diaper as disclosed in Japanese Laid-Open Patent Publication No. 57-77304, the parts which contact the left and right flanks when worn are previously joined. A so-called pants-type diaper has been devised, which is fixed and provided with an opening around the waist and an opening around the legs. The pants-type diaper can be worn and removed by the wearer, so when the infant is away from the diaper,
Also, the demand for adults such as incontinent persons is increasing.

In a so-called pants-type diaper, expansion and contraction elasticity is imparted to the openings around both legs, the waist opening, and both sides around the waist in order to improve followability and fit of the diaper to the wearer. Cage, Actual Kaihei 3-16
920, JP-A-4-28363, and JP-A-4
Japanese Patent Laid-Open No. 166150 proposes a pants-type disposable diaper or a method for manufacturing the same.

[0004]

SUMMARY OF THE INVENTION In order to give a satisfactory elastic elasticity to the leg opening, waist opening, and part of the waist of a diaper that is used as a pants-type diaper, the pants-type skirt is used. It is clear that the two sides of the diaper are unfolded and unfolded, and when you look at this, it is clear that the directions of these elastic elasticity do not always match, and because they intersect with each other and are curved, it is highly advanced. This requires technology and the production speed of the manufacturing machine is limited, which may be a hindrance to achieving the purpose of mass-producing at low cost necessary for all used articles. In other words, there is a contradictory relationship between the followability and fit to the wearer and the production efficiency of the product, and raising the quality increases the production cost, and the usability must be sacrificed to produce at low cost. was there.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and uses a pants-type wearer having elastic elasticity imparted to the openings around the legs, the openings around the waist, and a part around the waist with excellent elasticity. The present invention provides a diaper and a manufacturing method thereof.
More specifically, the present invention relates to an absorbent main body formed by a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between them, and both side edges of the front body and the back body. Pants type in which a stretchable elastic member is arranged along each opening integrally formed by joining at least a part of a waist type and a pants type exterior member having openings formed around both legs by joining A diaper that is used before and after, both elastic legs are provided on both sides in the longitudinal center of the absorbent main body located at the crotch part of the pants-type diaper when worn, and a pants-type exterior member. The present invention relates to a pants-type disposable diaper in which leg side opening / closing elastic properties are imparted by a side edge of a front body and an elastic member provided on a side edge of a back body which are not located at the crotch portion of the leg side opening.

Further, according to the present invention, a plurality of fourth elastic members are provided on a waist portion of the front body of the pants-type exterior member, and a plurality of fourth elastic members are provided on a waist portion of the back body. The pants-type disposable diaper is characterized in that a fifth stretchable elastic member of the book is provided discontinuously except the central portion of the back body.

Further, according to the present invention, the elastic elastic member of the waist-opening portion is attached so as to sandwich both longitudinal edges when the side seam portion of the pants-type diaper is opened and unfolded. In the elastic ribbon, while the strip-shaped sheets arranged facing each other face each other, a region of a predetermined width near one side edge is formed by arranging an elastic elastic member in an extended state. In the stretchable elastic region joined to the sheet, a region between the other side edge and the stretchable elastic region where the stretchable elastic member is not arranged is a non-joint region where the facing strip-shaped sheets are not joined. And both ends of the diaper in the longitudinal direction are joined to the elastic ribbon while being sandwiched between the strip-shaped sheets facing each other in the non-joining region of the elastic ribbon. Relating to the pants-type disposable diapers.

Further, the present invention is a method for manufacturing a pants-type diaper using an absorbent main body and a pants-type exterior member integrally formed with a liquid-permeable top sheet continuously supplied. Absorbers are arranged at a predetermined interval between liquid-impermeable backsheets, and a first region is provided between the topsheet and the backsheet in predetermined regions on both side edges in the vicinity of the central portion in the longitudinal direction of the absorber. 1 a step of placing a stretchable elastic member in a stretched state to obtain a continuous absorbent main body, cutting the continuous absorbent main body in the middle of the respective absorbent cores to obtain a single body of the absorbent main body, and a continuous sheet And a second stretch elastic member and a third stretch elastic member are supplied to both outer sides at a predetermined expansion rate with the middle of the sheet in the width direction as a boundary, and a fourth stretch elastic member is provided outside the second stretch elastic member. And a fifth outside the third elastic member. The contraction-elastic member is supplied at the same expansion ratio as the expansion ratio, and at that time, an interval corresponding to twice the length in the width direction of the pant-type exterior member is set on the sheet as one cycle, and In the longitudinal direction of the sheet, the positions of the second elastic member and the fourth elastic member from the center of the sheet in the width direction are crossed so that they are switched every half cycle, and similarly, on the sheet, Arranging each elastic member on the sheet while intersecting each other so that the positions of the third elastic member and the fifth elastic member from the center of the sheet in the width direction are exchanged at intervals of one half cycle; Of the second stretchable elastic member and the fourth stretchable elastic member that are arranged while intersecting, the entire stretchable elastic member closer to the side edge of the sheet is fixed to the sheet, and the other stretchable elastic member is the same. Expansion and contraction The elastic members are fixed to the sheet except for a predetermined section near the center between two points where the elastic members intersect, and the third elastic members and the fifth elastic members arranged while intersecting each other have both elastic members. A step of fixing to the sheet except a predetermined section in the vicinity of the center between two intersecting points, and the second stretchable elastic member, the third stretchable elastic member, the fourth stretchable elastic member and the fifth stretchable elastic member. Among them, a step of obtaining a continuous exterior sheet comprising a step of cutting a stretchable elastic member having an area not fixed to the sheet in the vicinity of the center of the area, the longitudinal direction of the absorbent main body alone and the width of the continuous exterior sheet. Match the direction,
The center of the third stretchable elastic member and the fifth stretchable elastic member between the points where the second stretchable elastic member and the fourth stretchable elastic member of the continuous exterior sheet intersect with each other at half the cycle. A step of aligning the widthwise center of the absorbent main body at the center between the intersecting points, and arranging and fixing a waist elastic elastic member in an extended state on both side edges of the sheet,
Folding back both side edges of the sheet in a state of including the waist-opening elastic member, and stacking and fixing the sheet on the absorbent main body to obtain a continuous diaper main body; and each absorbent main body on the continuous diaper main body. A step of hollowing out the leg holes between the single body and the center of the continuous diaper body as a boundary 2
Folding step, joining the two folded outer sheets between the absorbent body single bodies on the continuous diaper body, and cutting the continuous diaper body between the absorbent body bodies to form a single diaper body The present invention relates to a method for manufacturing a pants-type disposable diaper, which has a step of cutting it off.

Further, in the present invention, instead of the step of disposing and fixing the elastic elastic member in the waist opening, the elastic elastic member is fixed in a stretched state in a predetermined region from one side edge of one strip-shaped sheet. After that, the strip-shaped sheet is folded back along the center in the width direction, and a region having a stretchable elastic member is adhered to the strip-shaped sheet to obtain an elastic ribbon having a non-adhesive region in an opening, and The pant-type wearer according to claim 1, characterized in that the step of attaching the elastic ribbons to both widthwise side edges of the continuous diaper body so as to sandwich both side edges of the continuous diaper body in an adhesion region is adopted. The present invention relates to a method for manufacturing a diaper.

[0010]

According to the pants-type disposable diaper of the present invention and the method for manufacturing the same, elastic elasticity is imparted to the leg opening, waist opening, and part of the waist of the diaper to provide an excellent wearing feeling. have. Stretching elasticity around both legs is given by the action of both the substantially linear stretchable elastic member provided on the absorbent main body and the stretchable elastic member provided on the pant-type exterior member. The stretchable elastic member provided for imparting stretchable elasticity also has a function of imparting stretchable elasticity around the waist at the same time. Since the stretchable elastic members are installed simultaneously and continuously, it is possible to manufacture extremely efficiently.

Further, in the pants-type disposable diaper and the method for manufacturing the same of the present invention, the absorbent main body and the pants-type exterior member are separately configured, but the absorbent main body is a liquid-permeable top sheet and a liquid. Formed by an impermeable back sheet and an absorbent body arranged between them, the elastic elastic members provided on both sides of the absorbent body are substantially linear, and are in the same direction as the manufacturing direction. Since it is provided in the, it can be efficiently manufactured. That is, according to the pants-type disposable diaper of the present invention and the method for manufacturing the same, a diaper having a good wearing feeling can be efficiently obtained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing the embodiments of the present invention. FIG. 1 is a perspective view of a pants-type disposable diaper according to an embodiment of the present invention. The pants-type disposable diaper main body 1 of FIG. 1 has a configuration in which an absorbent main body is arranged inside a pants-type exterior member, and has a waist opening 3 and a leg opening 2, and the left and right leg openings The front body 4 and the back body 5 extending between the parts are adhesively closed by side seams 6. Side seam 6
Adhesive closure of the front body 4 and the back body 5 are overlapped, and both side edges are projected outward, or both side edges are projected inward, or one side edge is projected outward and the other side edge is projected inward. In this state, joining is performed along the outermost portions of both side edges by using a hot-melt adhesive, pressure melting, ultrasonic wave melting, etc., alone or in combination.

FIG. 2 shows a state in which the absorbent main body 7 and the pants-type exterior member 8 are joined in an expanded state in which the side seams 6 of the pants-type diaper body 1 of the present invention shown in FIG. In the perspective view shown, both sides joined by the side seams 6 when mounted in the state shown in FIG. 1 are shown as side flaps 9 when they are opened and deployed, respectively, in the vicinity of the left and right leg openings 2. Are the first elastic members 10 and 11 provided on the absorbent main body, the second elastic member 12 provided on the front body 4 and the third elastic member 13 provided on the rear body 5 of the pant-type exterior member. Stretch elasticity is imparted.

At this time, the second stretchable elastic member 12 and the third stretchable elastic member 13 are discontinuous near the center in the lateral direction of the diaper body 1 of the pants-type diaper.
Both the elastic elastic members 12 and the third elastic elastic members 13 extend substantially from the leg openings 2 to the waist side portions 1 of both the front body and the back body.
It is arranged over four. Further, the fourth elastic members 15 and the fifth elastic members 16 are arranged so as to connect both waist side portions 14 of the front body and the back body when the side seams are formed. Of these, the front body 4 Placed in 4th
The stretchable elastic member 15 is continuous in the lateral direction of the diaper body 1 around the waist, but the fifth elastic member is disposed on the back body 5.
The elastic member 16 is discontinuous around the waist in the vicinity of the center of the diaper body 1 in the lateral direction.

Further, as a feature of the manufacturing method of the present invention,
Since the pants-type exterior member 8 is continuously manufactured in the lateral direction, the second stretchable elastic member 12 and the fourth stretchable elastic member 15 are attached to each other in the adjacent pants-type exterior member 8 at the time of production, and the second stretchable member 8 is stretched. The elastic member 12 is attached substantially to the position of the fourth elastic member 15 in the front-back pant-type exterior member 8, and the third elastic member 13 is attached.
The same applies to the fifth elastic member 16.

FIG. 3 is a lateral cross-sectional view of an absorbent main body 7 which constitutes the main body 1 of the pants-type disposable diaper according to the embodiment of the present invention. In the absorbent main body 7, an absorbent body 18 is arranged in the center of a liquid-impermeable back sheet 17, and
Side sheets 19 are laminated on both sides of the sheet 8, and the first stretchable elastic members 10 and 11 are arranged in a stretched state between the back sheet 17 and the side sheet 19. Also absorber 1
8 is covered with a liquid-permeable top sheet 20, and three-dimensional gathers 21 including elastic elastic members are formed on both sides of the top sheet 20 in the longitudinal direction. Joined at the sides.

FIG. 4 is a transverse sectional view of the pants-type disposable diaper body 1 taken along line XX 'in FIG. The absorbent main body 7 is arranged on the exterior sheet 22, and the second elastic member 12, the third elastic member 13, the fourth elastic member 15, and the fifth elastic member are provided between the absorbent body 7 and the external sheet 22. Elastic member 1
6 is arranged in an extended state, the fourth elastic member 1
Other than 5, it is discontinuous in the center of the diaper body,
In order to clarify the disposed portion, FIG. 4 is illustrated assuming that the fourth stretchable elastic member 15 is continuous in the width direction of the diaper. Waist-around opening elastic members 23, 24 are arranged in a stretched state at both longitudinal ends of the pants-type disposable diaper body 1.
The waist opening (3) sandwiched between the exterior sheets 22
Is formed.

5 to 9 show main steps for manufacturing a pants-type disposable diaper according to an embodiment of the present invention.
In the following description, it is assumed that all the constituent materials of the pants-type diaper are sequentially moved on the manufacturing line to the final step of the manufacturing. FIG. 5 shows a step of continuously obtaining the pants-type exterior member 8, in which the second continuous elastic member 111 and the third continuous elastic member 11 are provided on the continuous exterior sheet 101.
2, the fourth continuous elastic member 113 and the fifth continuous elastic member 114 are arranged in a stretched state, and the relative positions of the second continuous elastic member 111 and the fourth continuous elastic member 113 are switched in a predetermined cycle. The same applies to the third continuous elastic member 112 and the fifth continuous elastic member 114. Further, the continuous elastic members 115 and 116 around the waist are arranged in an expanded state on both sides of the continuous exterior sheet 101, and the continuous exterior member 105 is obtained.

At this time, as shown in FIG. 10, only the second to fifth elastic members are arranged on the continuous exterior sheet 101 in the same manner as shown in FIG. Arranges the waist elastic continuous elastic members 115, 116 in a stretched state on the continuous waist sheet 103, 104, integrates them on both sides of the continuous exterior sheet 101, and sends the continuous exterior member 105 to the next step. May be.

As described above, when the continuous waist sheet 103, 104 is used as the material for forming the waist, a material different from that of the continuous exterior sheet 101 can be selected and the skin is less irritating. It is more preferable because a material having excellent hygroscopicity such as sweat and sweat can be used.

In FIG. 5, after the second to fifth continuous elastic members are arranged on the continuous exterior sheet 101, the second continuous elastic member 111 or the fourth continuous elastic member 113 is arranged.
Except for the one near the waist opening, the elastic elastic member is cut near the middle of the intersecting points. As a result, the stretchable elastic member that has been in the stretched state is relaxed in the stretch and contracts, so that the stretchable stress does not substantially work in the vicinity of the cut portion. For this purpose, an adhesive for adhesively fixing the stretchable elastic member is intermittently supplied, and the stretchable elastic member is continuously attached to the continuous exterior sheet 101 in a desired region near the cut portion.
It should be left in a non-bonded state.

FIG. 6 shows a continuous absorbent main body 106 obtained by another step following the step shown in FIG.
The absorbent main body 7 is obtained by cutting between 8 and the longitudinal direction of the absorbent main body 7 is aligned with the width direction of the continuous exterior member 105, and the absorbent main body 7 is placed at a predetermined position on the continuous exterior member 105. The center of the absorbent main body 7 in the width direction coincides with the midpoint between the intersections of the second to fifth continuous elastic members. Then, the continuous exterior member 10
Both side portions of 5 are folded back on the absorbent main body to sandwich the elastic members 115 and 116 around the waist.

FIG. 7 shows a step of hollowing out a portion 102 corresponding to the leg opening (2) of the main body 117 of the continuous pants type used in the steps up to FIG. FIG.
Shows a step of folding the continuous pant type disposable diaper body 117 obtained by the steps up to FIG. 7 through the center line in the width direction so that the absorbent body 7 is located inside. FIG. 9 shows the continuous pant type disposable diaper body 117 obtained by the steps up to FIG. 8 that is adhesively fixed along both side edges of the boundary line of each diaper, and further cut near the outer side of the adhesive fixed portion. The process of obtaining the diaper body 1 by using the pants type is shown.

In the present invention, the second to fifth stretchable elastic members arranged on the exterior sheet are discontinuous because they are cut at the central portion of the body of the diaper body except the upper part of the front body of the pants-type diaper. This does not require expansion and contraction elasticity except for the upper part of the front body. In the present invention, when the continuous exterior member 105 is continuously manufactured, the combination of the second and fourth expansion and contraction elastic members and the third and fifth expansion and contraction elastic members is used. The relative positions of the continuous outer sheet 101 are changed so that they intersect each other with a length twice as long as the width direction of the diaper body on the continuous exterior sheet 101, and the elastic elastic members forming a part of the leg openings are next to each other. Since it also has the function of giving elastic elasticity around the waist on the outer sheet, it is arranged while moving cyclically on the outer sheet in the stretched state, but near the crotch part of the center of the diaper body and the back part. In addition to being unnecessary in the stretched state, it is not preferable because the appearance is impaired. However, it is preferable that the upper part of the front body is arranged over the entire width of the front body in order to improve the adhesion to the abdomen.

Here, as the top sheet 20, a liquid permeable non-woven fabric made of synthetic fiber made of polyethylene, polypropylene, polyester or other thermoplastic resin is used, and the side edges of the top sheet 20 form a solid gather 21. Therefore, in order to enhance the effect of preventing leakage, only the both side edge portions may be subjected to hydrophobic processing.
The back sheet 17 is a liquid-impermeable polyethylene sheet, preferably a polyethylene sheet having fine pores, a moisture-permeable liquid-impermeable sheet obtained by adding a filler to a thermoplastic resin and stretching, and imparts moisture permeability to the sheet. It's more comfortable because you don't have to worry about getting stuffy.

The stretchable elastic members forming the leg openings, a part of the waist, the waist openings, the upper part of the front body, and the three-dimensional gathers are stretchable elastic materials such as urethane thread and rubber thread which are usually used in diapers. You can use your body as it is,
These stretchable elastic members are arranged in a stretched state in the leg openings, waist openings, front body upper part, and the like, and are bonded and fixed to a predetermined area by a hot melt adhesive. As the side sheet 19, a nonwoven fabric made of polyethylene, polypropylene, polyester, or other synthetic resin made of a thermoplastic resin is used, but it is preferably hydrophobic, and the nonwoven fabric made of synthetic fiber is made of a thermoplastic resin as a raw material. A liquid-impermeable film may be laminated.

The absorbent 18 is preferably made of fluff pulp as a main material and a high-absorbent polymer in combination, and other absorbent paper may be used alone, or a mixture or laminate of heat-sealing fibers. Further, it is preferable to have a laminated structure in which the whole is wrapped with tissue, and the shape of the absorber 18 may be an hourglass type or a rectangular type, but the hourglass type can obtain a better fit property. Exterior sheet 22 and continuous sheet around waist 1
As 03 and 104, polyethylene, polypropylene,
A nonwoven fabric made of synthetic fibers made of polyester or other thermoplastic resin can be used, but it is preferable that the texture is as soft as possible. In addition, the continuous sheet around the waist may contain hygroscopic fibers such as cellulose so as to have hygroscopicity.

[0028]

According to the pants-type disposable diaper and the method of manufacturing the same of the present invention, the leg opening, waist opening and waist part of the diaper are provided with elastic elasticity, which is excellent. Has a feeling of wearing. Stretching elasticity around both legs is given by the action of both the substantially linear stretchable elastic member provided on the absorbent main body and the stretchable elastic member provided on the pant-type exterior member. The elastic member provided for imparting elastic elasticity also has the effect of imparting elastic elasticity around the waist at the same time,
The stretchable elastic member in the pants-type exterior member can be manufactured extremely efficiently because the stretchable elastic member is simultaneously and continuously installed around the legs and the waist in the manufacturing means.

[Brief description of drawings]

FIG. 1 is a perspective view of a pants-type disposable diaper of the present invention.

FIG. 2 is a perspective view showing a state in which side seams of the pants-type diaper shown in FIG. 1 are opened.

FIG. 3 is a lateral cross-sectional view of the absorbent main body that constitutes the pants-type diaper of the present invention.

FIG. 4 is a cross-sectional view of the pants-type disposable diaper of FIG. 2 in the XX ′ direction.

FIG. 5 is a partial plan view schematically showing the manufacturing process of the pants-type diaper of the present invention.

FIG. 6 is a partial plan view schematically showing the manufacturing process, following FIG.

FIG. 7 is a partial plan view schematically showing the manufacturing process, following FIG.

FIG. 8 is a partial plan view schematically showing the manufacturing process, following FIG.

FIG. 9 is a partial plan view schematically showing the manufacturing process, following FIG.

FIG. 10 is a partial plan view schematically showing another manufacturing process of the pants-type diaper according to the present invention.

[Explanation of symbols]

 1: Pants-type disposable diaper body 2: Opening around leg 3: Opening around waist 4: Front body 5: Back body 6: Side seam 7: Absorbent body 8: Pants-type exterior member 9: Side flaps 10, 11: 1st expansion-contraction elastic member 12: 2nd expansion-contraction elastic member 13: 3rd expansion-contraction elastic member 14: Waist side part 15: 4th expansion-contraction elastic member 16: 5th expansion-contraction elastic member 17: Back sheet 18: Absorber 19 : Side sheet 20: Top sheet 21: Three-dimensional gather 22: Exterior sheet 23, 24: Waist surrounding opening elastic elastic member 101: Continuous exterior sheet 102: Hollowed-out portion 103, 104: Continuous waist surrounding sheet 105: Continuous exterior member 106: Continuous absorbent body 111: Second continuous elastic member 112: Third continuous elastic member 113: Fourth continuous elastic member 114: Fourth Continuous stretching the elastic member 115 and 116: waist continuous stretch elastic member 117: Continuous pants-type disposable diaper body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Hirai 1-10-6 Shinonome, Koto-ku, Tokyo Shinoji Paper Manufacturing Co., Ltd. Tokyo Commodity Research Institute

Claims (5)

[Claims] 1. An absorbent main body formed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these sheets, and the front body and the back body on both side edges are joined together. By this, at least a part of a waist type and a pants type exterior member having openings formed around both legs are joined together to be integrally formed, and a stretchable elastic member is arranged along the openings to be used as a pants type. In the diaper, the stretchable elastic members around both legs are a first stretchable elastic member provided at both sides in the longitudinal center of the absorbent main body located at the crotch portion of the pants-type diaper, and the leg-shaped openings of the pants-type exterior member. Second elastic member provided on the side edge of the front body which is not located in the crotch part of the body, and third elastic member provided on the side edge of the rear body which is not located in the crotch part of the leg opening of the pant-type exterior member. With elastic member Pants-type disposable diapers that are more form. 2. A plurality of fourth elastic members are provided on a waist portion of a front body of the pants-type exterior member, and a plurality of fourth elastic members are provided on a waist portion of the back body. 5
The pants-type disposable diaper according to claim 1, wherein the stretchable elastic member is provided discontinuously except the central portion of the rear body. 3. The elastic elastic member at the waist opening is an elastic ribbon attached so as to sandwich both longitudinal edges when the side seam portions of the pants-type diaper are opened and deployed. , The elastic ribbon is
While the strip-shaped sheets arranged facing each other are opposed to each other, a region having a predetermined width near one side edge is a stretchable elastic region in which the stretchable elastic member is arranged in an extended state and joined to the strip-shaped sheet, The region where the elastic elastic member is not arranged between the other side edge and the elastic elastic region,
The elastic ribbon is a non-bonding region where the facing strip-shaped sheets are not bonded, and both longitudinal edges of the diaper are sandwiched between the facing strip-shaped sheets in the non-bonding region of the elastic ribbon. The pants-type disposable diaper according to claim 1, which is joined. 4. A method for manufacturing a pants-type diaper using an absorbent main body and a pants-type exterior member integrally formed, which comprises a liquid-permeable top sheet and a liquid-impermeable material which are continuously supplied. Absorbent body is arranged between the topsheet and the backsheet at a predetermined interval, and a first elastic member is provided between the topsheet and the backsheet in a predetermined area on both side edges near the central portion in the longitudinal direction of the absorbent body. A step of arranging the members in a stretched state to obtain a continuous absorbent main body, cutting the continuous absorbent main body between the absorbent cores to obtain a single body of the absorbent main body, and the sheet on a continuous sheet The second stretchable elastic member and the third stretchable elastic member are supplied to both outer sides at a predetermined expansion rate at the middle of the width direction middle, and the fourth stretchable elastic member is provided outside the second stretchable elastic member. No. 5 on the outside of the 3 elastic members
The stretchable elastic member is supplied at the same stretch ratio as the stretch ratio, and at that time, an interval corresponding to twice the length in the width direction of the pants-type exterior member on the sheet is one cycle,
In the longitudinal direction of the sheet, the positions of the second elastic member and the fourth elastic member from the center of the sheet in the width direction are crossed so as to be switched every half cycle.
Similarly, on the sheet, the elastic members are crossed so that the positions of the third elastic member and the fifth elastic member from the center of the sheet in the width direction are switched every half cycle. Arranging on the sheet, fixing the whole area of the elastic elastic member closer to the side edge of the sheet of the second elastic elastic member and the fourth elastic elastic member arranged while intersecting with each other, The other elastic member is fixed to the sheet except for a predetermined section in the vicinity of the center between two points where the two elastic members intersect, and the third elastic member and the fifth elastic member arranged while intersecting each other. The elastic member is fixed to the sheet except for a predetermined section near the center between two points where the two elastic elastic members intersect, the second elastic elastic member, the third elastic elastic member, and the fourth elastic elastic member. Parts and A step of obtaining a continuous exterior sheet comprising a step of cutting an elastic elastic member having a region not fixed to the sheet in the fifth elastic elastic member in the vicinity of the center of the region, and a longitudinal direction of the absorbent main body alone. And the width direction of the continuous exterior sheet are made to coincide with each other, and the center between the points where the second stretchable elastic member and the fourth stretchable elastic member of the continuous exterior sheet intersect with each other at every half cycle of the cycle. 3 A step of arranging the absorbent body alone so that the center of the absorbent main body in the width direction coincides with the center between the intersecting points of the elastic elastic member and the fifth elastic member, and the elastic waist elastic around the waist on both side edges of the sheet. A step of arranging and fixing the member in an extended state, folding back both side edges of the sheet in a state of enclosing the elastic member around the waist opening, and stacking and fixing the sheet on the absorbent main body to obtain a continuous diaper main body; A step of hollowing out a leg hole in a continuous exterior sheet between the individual absorbent main bodies on the continuous diaper main body, a step of folding in two at the center of the continuous diaper main body, and each absorption on the continuous diaper main body 2 between the sex main body
A method for producing a pants-type disposable diaper, comprising: a step of joining folded outer sheets to each other; and a step of cutting the continuous diaper main body between the absorbent main bodies and cutting the diaper main body alone. 5. The step of arranging the elastic member around the waist around the opening stretches after fixing the elastic member in a stretched state in a predetermined region from one side edge on one strip-shaped sheet,
The strip-shaped sheet is folded back along the center in the width direction, and a region having a stretchable elastic member is bonded to each other to obtain an elastic ribbon having a non-bonded region in an opening, and a non-bonded region of the elastic ribbon. 5. The method for manufacturing a pants-type disposable diaper according to claim 4, further comprising the step of attaching the elastic ribbons to both side edges of the continuous diaper body so as to sandwich both side edges of the continuous diaper body. .