JPH04161152A - Disposable absorptive article and its manufacture - Google Patents

Abstract

PURPOSE:To reduce the cost and to improve the fittability and the ventilation of a flap by providing the outermost layer sheet for surrounding the waist and placing and holding an absorptive main body against a wearer at the time of wear. CONSTITUTION:An absorptive main body 3 is fixed about in the center of the outermost layer sheet 2. The outermost layer sheet 2 desirably consists of a high flexible sheet being liquid-impermeable, and having ventilation and the sense of touch being similar to underclothes. The absorptive main body 3 is constituted of a liquid permeable top sheet 15 for forming the side for coming into contact with the skin of a wearer, the corresponding liquid impermeable back sheet of the top sheet 15, and an absorbing body 17 interposed between the top sheet 15 and the back sheet 16. Also, in the end edge part in the longitudinal direction of the outermost layer sheet 2, a pair of waist flaps 8, 9 extended out to the outside of the absorptive main body 3 are provided, turned back from a turn-back line 10 and insert and hold the end edge part of the absorptive main body 5 and hold it surely. Moreover, a second elastic member 12 is provided on the waist flaps 8, 9, respectively, and at the time of wear, fittability to a wearer is enhanced. and slip-down is prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disposable absorbent article and a method for manufacturing the same, particularly,
This invention relates to disposable absorbent articles such as disposable diapers used for infants, adults, and incontinent persons, and a method for manufacturing the same.

[Prior art] In conventional disposable diapers, for example,
As disclosed in Japanese Patent No. 40267, a diaper main body is composed of a liquid-permeable top sheet, a liquid-impermeable hack sheet, and an absorbent body located between these two sheets. A so-called flat type is known, in which a pair of left and right side flaps are integrally formed, and fastening devices are disposed on both edges of the dorsal side of the side flaps and fastened on the ventral side. .

Recently, as disclosed in Japanese Patent Application Laid-Open No. 57-77304, the ventral region and dorsal region of a pair of left and right side flaps are joined and fixed to each other to form a pair of left and right leg openings and a waist opening. So-called pants-shaped disposable diapers have been proposed. The pants-type disposable diaper is configured such that the leg openings and the waist opening are each elastically formed so as to be twisted to fit the body shape. Such pant-shaped disposable diapers can be worn by the wearer in a standing position, and can be used for toilet training to encourage infants to "wean off diapers," or for incontinent persons, etc. It is said to be useful for ambulatory adults.

Also, Japanese Utility Model Publication No. 143809/1983, Japanese Patent Application Laid-open No. 61-
Japanese Patent No. 207605 discloses a structure in which a bank sheet is covered with nonwoven fibers in flat-type and pants-type disposable diapers, with the intention of producing disposable clothing that has a well-tailored appearance.

On the other hand, several proposals have been made regarding methods for manufacturing disposable diapers. They are basically JP-A-57-
This is typified by the horizontal flow method in which the longitudinal direction of the absorbent body is perpendicular to the flow direction, as seen in Japanese Patent Application Laid-open No. 77304 and Japanese Patent Application Laid-Open No. 1-282102.

Generally, these types of disposable diapers have problems in that productivity is significantly reduced and costs are inevitably increased. That is, a technique for inserting an elongated elastic member in a direction perpendicular to the flow direction of a continuous web has not yet been established, resulting in a decrease in productivity.

Among them, a pant-type disposable diaper with a heddle that does not require side seals and a method for manufacturing the same were featured in the special publication in 1986.
Although this product is disclosed in Japanese Patent No. 1-502264, the elongation rate of the belt must be set extremely high.

[Problem to be solved by the invention]

However, in the disposable diapers described in Japanese Utility Model Application Publication No. 58-143809 and Japanese Patent Application Publication No. 61-207605, the back sheet constitutes the diaper body including the flap portion, so even if the back sheet is not soft to the touch. Even with good nonwoven fibers, they have poor water resistance, so a multilayer laminated sheet or laminate sheet must be provided over the entire backsheet, resulting in high costs, deterioration of the texture of the flap, and decreased breathability. There's a problem.

Here, the above-mentioned texture is generally evaluated sensually, and refers to softness, appearance, gloss, touch, etc.

Therefore, an object of the present invention is to provide a disposable absorbent article that is inexpensive, has an excellent flap texture, and has excellent breathability, and a method for manufacturing the same.

[Means to solve the problem]

The present invention provides an absorbent body having a liquid-permeable top sheet, a liquid-impermeable hack sheet, and an absorbent body disposed between these two sheets, and a part of which the absorbent body is fixed. The above object has been achieved by providing a disposable absorbent article comprising an outermost layer sheet which is a breathable sheet and which surrounds the waist and holds the absorbent body against the wearer when worn.

The present invention also provides a method for producing the above-mentioned absorbent article, which includes an absorbent body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these two sheets. , comprising a fixing step of intermittently placing and fixing the outermost layer sheet on the continuously supplied strip-shaped outermost layer notebook belt, and a cutting step of cutting the outermost layer sheet between the fixed absorbent bodies. The present invention also provides a method for manufacturing the characteristic disposable absorbent article.

[Effect]

According to the disposable absorbent article of the present invention, the outermost layer notebook surrounding the wearer's waist region is made of a breathable material, so that excellent breathability can be obtained.

Moreover, since the absorbent body is provided with a liquid-impermeable hack sheet, there is no possibility that excrement absorbed by the absorbent body will leak.

In addition, the outermost sheet has pores, so
Easy to bend, soft, highly flexible, and has an excellent texture. Furthermore, even when an elastic member is disposed on the outermost layer sheet, the wearer can snugly fit the 9 acidic article.

Further, according to the method for manufacturing an absorbent article according to the present invention, the absorbent article main body described above is disposed intermittently on a continuous outermost layer sheet band, so that the absorbent article of the present invention can be manufactured easily at high speed and continuously. It is something.

〔Example〕

A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. In the following examples, a disposable diaper for infants will be used as an example of the absorbent article.

The disposable diaper 1 according to the embodiment of the present invention is a so-called pants-type disposable diaper, and as shown in the unfolded state in FIG.
It consists of an absorbent main body 3 fixed to approximately the middle of the body.

The outermost layer trunk 2 is formed into a substantially rectangular shape that is substantially larger than the absorbent main body 3, and the absorbent main body 3 is adhered to a substantially central portion thereof in the longitudinal direction.

Furthermore, recessed notches 4 are formed on both sides to which the absorbent main body 3 is attached, so that leg openings are formed when a pants shape is formed. A pair of left and right side flaps 5 are provided above and below the constriction portion where the concave notch 4 is formed, respectively, extending outward in the width direction from both sides of the absorbent body 3.
．． 5 and 6.6 are extended.

A joining part 7 is provided at each edge of the side flaps 5.5 and 6.6, and the upper and lower side flaps 5.6 are fused together at the joining part 7 to form a pants shape. It has become.

In addition, at the edge portion in the longitudinal direction of the outermost layer sheet 2,
A pair of waist flaps 8.9 are provided which extend outward from the absorbent body 3 so that a waist opening is formed by the waist flaps 8.9 when the pants shape is formed.

The waist flaps 8.9 are folded back from the folding line 10, and the end edges of the absorbent body 3 are held between the folds and the absorbent body 3 is held securely. Also,
The waist flaps 8.9 each have a second elastic member 12,
A third elastic member 13 is disposed on the side flap 5°5.6.6 to enhance the grip on the wearer when worn and to prevent the wearer from slipping off.

When the absorbent main body 3 is attached to the outermost layer sheet 2, a constriction 14 is formed in the longitudinal direction, corresponding to the recessed notch 4 of the outermost layer sheet 2.

The absorbent main body 3 includes a liquid-permeable bank sheet 15 forming the side that contacts the wearer's skin, a liquid-impermeable bank sheet 16 corresponding to the top sheet 15, and a top sheet 15.
and an absorbent body 17 interposed between a hack sheet 16 and a hack sheet 16.

The absorbent body 3 also includes a pair of left and right body flaps 18 and 18 extending outward in the width direction from both side edges of the absorbent body 17.
and first elastic members 19.19 forming gears on each of the leg portions of the left and right pair of main body flaps 18.18.

This first elastic member 19.19 is arranged along the longitudinal direction of the absorbent body 3 and is substantially perpendicular to the second elastic member 12 arranged on the waist flap 8.9.

The top sheet 15 is preferably a liquid-permeable sheet that allows excrement to pass through to the absorbent body 17 and has a feel similar to underwear. Examples of such liquid-permeable sheets include woven fabrics, non-woven fabrics, and porous films. It is also preferable to apply a hydrophobic compound such as silicone oil or paraffin wax to the periphery of the top sheet 15, or to apply a hydrophilic compound such as an alkyl phosphate ester in advance and then soak the periphery with warm water. The cleaning method provides water repellent treatment and prevents leakage due to urine or other stains at the periphery.

The back sheet 16 may be a moisture-permeable, liquid-impermeable sheet made by adding a filler to a thermoplastic resin and stretched, or a material with a feel similar to underwear, such as a composite material of a film and a nonwoven fabric, or a composite material of a film and a woven fabric. materials etc. are used.

The absorbent body 17 is preferably made of a defibrating valve and also uses a high-molecular water-absorbing polymer, and is preferably made of a heat-treated mixture of a thermoplastic resin, cellulose fiber, or a high-molecular water-absorbing polymer. The polymer may exist in the upper, middle, or lower layer, and may be mixed with the pulp. It is preferable to use a particulate material that has a retention property and a property of gelling.
For example, starch-acrylic #(salt) graft copolymer, starch-acrylonitrile acid (salt) polymer, etc. are preferred. The shape is preferably an hourglass shape that matches the body shape of the wearer, but it may also be rectangular.

The outermost layer sheet 2 is preferably a highly flexible sheet that is liquid-impermeable, breathable, and has a feel similar to underwear, and such sheets include water-repellent woven fabric, Examples include non-woven fabrics. Preferably, it prevents leakage due to seepage of urine or the like.

Although not shown, in a disposable diaper in which the wing-held absorbent body 3 is integrally joined to the outermost layer sheet 2, if the gathered wing parts are left unjoined, the crotch area may A double flap is formed, and the wing portion of the absorbent main body 3 constitutes a gears having a three-dimensional shape, and exhibits a leakage prevention effect.

The first, second, and third elastic members 19, 12, and 13 are generally attached to the absorbent body 3 and the outermost sheet 2 in the stretched state by ultrasonic welding, thermal welding, adhesive side, or other means known in the industry. and are joined together. As the material, any material known in the industry can be used, such as thread rubber, flat rubber, film-type rubber, or tape-shaped polyurethane foam, and the material may be one or more. Generally, the left and right side flaps, the pair of upper and lower waist flaps, and the left and right waist side portions of the elastic members are arranged symmetrically.

Further, it is particularly preferable that the stress at 150% elongation is 70 to 100 g.

Further, as shown in FIG. 1, the first elastic member 19 may be arranged in a curved manner along the recessed notch.

Next, a disposable diaper 21 according to a second embodiment of the present invention will be described with reference to FIG.

The disposable diaper 21 of this second embodiment is a so-called flat type disposable diaper. In this second embodiment, other general configurations are the same as those in the first embodiment, so parts that are the same as those in the first embodiment are designated by the same reference numerals. Detailed explanation will be omitted.

The outermost sheet 2 is formed into a substantially hourglass shape, and a tape fastener 23 is attached to the back side flap 22.
is attached to the ventral region and held at the wearer's waist.

The absorbent main body 3 extends in a rectangular shape and extends from the waist flap 8 on the back side of the outermost layer sheet 2 to the waist flap 9 on the ventral side.

At both end portions 26 in the longitudinal direction of the absorbent main body 3, end flaps 16a of the liquid-impermeable hack sheet are folded back to prevent leakage of the waste absorbed by the absorbent body 17. Further, both end edge portions of the absorbent body 3 are covered by the folded portions 8a and 9a of the waist flap 8.9 so as to be sandwiched by the outermost layer sheet 2, thereby ensuring reliable retention and excretion of the absorbent body 3. Leakage of items is prevented.

In the absorbent main body 3, an elastic member 19 is stretched over the main body flap 1B, and gears are formed in the leg portion (recessed notch portion 4).

Next, preferred embodiments for manufacturing the absorbent article of the present invention will be described.

First, a first embodiment of the present invention will be described with reference to FIG.

In this first embodiment, the absorbent body 3 is manufactured by a so-called longitudinal flow method in which the longitudinal direction is parallel to the flow direction.

Although not shown in FIG. 3, the absorbent main body 3 includes absorbent bodies 17 such as defibrated fibers placed one after another at equal intervals on a continuous band-shaped bank sheet 16, and a continuous band-shaped tomp sheet 15 placed on top of this. and weld the absorbers 17 together. On the other hand, the first elastic member 19 is stretched in advance on the hack sheet 16 in the longitudinal direction.

In this way, a strip 30 in which the absorbent bodies 3 are continuous is manufactured, and as shown by arrow A in FIG.
are conveyed to the reversing device 31 so as to be continuous in the longitudinal direction.

An adhesive coating device 32 is provided in front of the reversing device 31, and the adhesive coating device 32 is used to continuously apply adhesive to one surface of the strip 30 so as to apply adhesive to the entire surface of the absorbent body 3 on the hack sheet 16 side. The agent is being applied.

After the strip 30 of the absorbent body 3 coated with adhesive is supported by the head of the reversing device 31, it is cut along the imaginary line 34 by the cutting device 33, and each absorbent body 3 is manufactured. The individual absorbent bodies 3 are rolled onto the polymerization roll 3 on the reversing device 31 while being supported by the head of the reversing device 31.
By the time it reaches 4, it is rotated about 90 degrees (reversal process).

The reversing device 31 includes an arm extending radially around the axis,
A support head is provided at the tip of each arm, and the support head is provided with an anvil corresponding to the cutting device 33 and means for supporting the absorbent body 3 such as an intake system, a bottle hold, and a mechanical chunk.

Further, the supporting head passes through a cutting device 33 to a polymerization roll 34.
The absorbent body 3 is provided with a mechanism for transferring the absorbent body 3 while inverting it by 90 degrees until reaching the position. Note that each separated absorbent body 3 is supported by the head and maintains a flat shape without being affected by the shrinkage stress of the elastic member 19 arranged on the absorbent body 3, while maintaining its flat shape in the flow direction. 90°
It will be reversed and sent to the polymerization roll 34.

It is preferable to include a step of folding back the end flaps 8a, 9a onto the upper surface of the absorbent body 17 (see FIG. 1) during this reversing step.

On the other hand, the third elastic member 13 in the stretched state forms an elastic tape 37 that is intermittently or continuously joined to the support sheet 36, and sends the elastic tape 37 to the intermittent transfer device 38. The stretchable tape 37 supported in a stretched state is cut into individual stretchable tapes 40 by a cutter 39 and fed intermittently to a polymerization roll 41. This elastic tape 40 forms the gears of the west side portion.

On the other hand, the outermost layer sheet band 42 is unwound from the original fabric, and a second
The elastic member 12 is arranged and the outermost layer sheet band 44 is sent to the polymerization roll 41. This second elastic member 12 forms gears that cover the waist opening.

In the polymerization roll 41, the elastic tape 40 formed in the above process is intermittently placed on the outermost layer sheet band 42 and integrally joined. At this time, the third elastic member 13 is placed between the support sheet 36 and the outermost sheet band 42. Thereafter, in a winding step 42, the waist elastic member 1 is rolled up by rolling up both side edges 43.
2 to form a waist flap 8.9.

Next, the individual absorbent main bodies 3 that have been inverted by about 90 degrees in the inverting device 31 are stacked on the outermost layer sheet 2 by the polymerization roll 34, and integrally joined to the outermost layer sheet 2 with an adhesive (fixing step). .

At this point, the arrangement of the second and first stretchable elastic members 12.19 in a positional relationship parallel and perpendicular to the flow direction is completed, forming the disposable diaper web 49.

Thereafter, a leg hole 46 as a concave notch 4 is formed between adjacent absorbent main bodies 3.3 using a rotary die cutter 45. Methods for forming the leg holes 46 include methods such as water jetting and punching in addition to a rotary die cutter method. Next, the disposable diaper web 49 is folded in two by the folding means 48 based on the center line parallel to the flow direction. Fold it in half as a line.

The folded disposable diaper web 49 is sealed by the sealing device 5.
1, the outermost sheets are integrally sealed together by ultrasonic welding or the like at a position approximately in the middle between the absorbent bodies 3 and 3 (side seal). This sealing is done intermittently.

After the side sealing, the disposable diaper web 49 is cut into individual disposable diapers 1 by the final cutter unit 52 (cutting step).

The cutting is performed within the side seal portion, and the cut portion becomes the joint 7 (see FIG. 1). Ultrasonic sealing is performed to obtain appropriate seal strength and seal width to prevent the seal from peeling off immediately after cutting. In this way, a completely stretchable pants-type disposable diaper 1 is obtained. The state in which the joint portions 7.7 of this disposable diaper 1 are peeled off and the stretchable portions are stretched and spread out is equivalent to the diaper shown in FIG. 1.

Next, a second embodiment will be described with reference to FIG. This second embodiment is an embodiment of the method for manufacturing the disposable diaper 21 according to the second embodiment, that is, a flat type disposable diaper.

Furthermore, in the second embodiment, the absorbent body 3 is of a vertical flow type in which the absorbent body 3 is flowed parallel to its longitudinal direction.

Although not shown in FIG. 4, the strip-shaped body 30 of the absorbent main body 3 is made by placing absorbent bodies 17 such as defibrated fibers at equal intervals on a continuous strip-shaped bank note 16, and then It is manufactured by covering it with a strip-shaped tomp sheet 15 and adhering it. On the other hand, the first elastic member 19 is stretched in the longitudinal direction on the backsheet 16 in advance.

In this way, a strip 30 in which the absorbent bodies 3 are continuous is manufactured, and as shown by arrow B in FIG.
are conveyed to the reversing device 31 so as to be continuous in the longitudinal direction.

In front of the reversing device 31, an adhesive coating device 32 is provided, and the adhesive coating device 32 is used to continuously apply adhesive to one surface of the strip 30 so as to apply adhesive to the entire surface of the absorbent body 3 on the side of the hack sheath 6. The agent is being applied.

In the above examples, the adhesive material is coated on the entire surface of the back sheet 6, but there is no problem even if it is coated with the minimum required pattern.The coating process includes bead, coater, spray , transfer, screen, gravure, etc.

Then, the absorbent body 3 is cut along the imaginary line 34 by the cutting device 33, and each absorbent main body 3 is manufactured. The cut absorbent main body 3 is rotated by about 90 degrees by a reversing device 31 and then intermittently sent to a polymerization roll 34 .

On the other hand, the outermost sheet band 42 is unwound from the original fabric (not shown) and sent to the polymerization roll 34, where the absorbent body 3 and the outermost sheet band 42 are bonded to the article body. A disposable diaper web 49 is formed by integrally bonding the disposable diaper web 49 with the adhesive.

Forming astragalus holes 49 in the integrated disposable diaper web 49 using a rotary die cutter 45,
The final canter unit 52 cuts into individual disposable diapers 21.

Then, in the next step, the tape fastener 23 is attached to the side flap 22.

Next, a third embodiment will be described with reference to FIG. In the third embodiment, an example of a horizontal flow method is shown in which the absorbent body 3 is flowed with its longitudinal direction perpendicular to the flow direction.

In addition, in this third embodiment, on top of the outermost layer sheet 2 on which the absorbent main bodies 3 are disposed intermittently, a top sheet 55 unwound from the original fabric is further integrally formed by a polymerization roll group 56. It is joined. Other manufacturing processes are as described above.
This is the implementation of B-Sho and Rima. According to the disposable diaper 58 obtained by this third embodiment, the top sheet 55
This allows the absorbent main body 3 to be fixed more reliably.

The individual absorbent bodies 3 separated in the cutting process 33 are supported by the head of the intermittent transfer device 57, and are transferred to the flant without being affected by the shrinkage stress of the elastic member 19 that has been placed on the absorbent body 3 in advance. It is sent to the polymerization roll 34 while maintaining its shape.

It is preferable to include a step of folding back the end flap 16a onto the upper surface of the absorbent body in this intermittent transfer step.

In the disposable diapers 1.21.51 obtained by the methods according to the first, second, and third embodiments described above, the backsheet 16 is arranged only in the area where the absorbent body 17 is placed, so that the flap is highly flexible and highly breathable.

The advantage of using such a manufacturing method is that it is possible to supply a nonwoven fabric with sufficient strength against the tensile stress that is applied when securing a diaper to a wearer using a tape fastener. Materials used in such disposable absorbent articles, such as nonwoven fabrics, are thin when considering cost. At this time, the strength of the nonwoven fabric spread on the original fabric in the long direction is 5 to 6 times better than the strength in the short direction. In this manufacturing method, it is possible to arrange the tape fastener with its longitudinal direction in the direction in which stress is applied, and a very rational product design can be achieved.

As described above, according to the manufacturing method according to the embodiment described above, the elastic member can be easily arranged and the absorbent article of the present invention can be manufactured without impairing high-speed productivity.

It goes without saying that these embodiments of the absorbent article related to the present invention and the method of the present invention can be modified as desired without departing from the spirit of the present invention.

For example, a tear guide means may be arranged adjacent to the side roll portion of the full pants-type disposable diaper 1 so that the diaper can be easily peeled off by the wearer. This tear guide means may be a cut guide line, a seal portion, or the like, which can be easily pulled, while having sufficient strength to prevent tearing or tearing during wear. .

According to another embodiment of the method of the present invention, the absorbent body 3 is flowed perpendicularly to the longitudinal direction of the body, and at this time a first elastic body for the waist is inserted. Each main body 3 is rotated by 90° to make the diaper web flow vertically. At that time, the second elastic body for the leg is inserted.

〔Effect of the invention〕

According to the disposable absorbent article according to the present invention, it is possible to provide a disposable absorbent article that is inexpensive, has an excellent flap texture, and has excellent breathability, and a method for manufacturing the same.

Another effect of the method of the present invention is that when a reversing device is used when transferring the absorbent body to the outermost layer sheet, if an elastic member is stretched in the flow direction of the article body, the article body can be rotated at a 90° angle.
When it is inverted and transferred to the outermost layer notebook, an elastic member extending in a direction perpendicular to the flow direction will be placed. Therefore, by integrally inverting the elastic member with the article body, the inverted arrangement is facilitated.

In other words, arranging the elastic member perpendicular to the flow direction has often lowered the high-speed productivity of absorbent articles, but this is because it is technically difficult to handle a single thread-like or band-like elastic member. It was due to something.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view of a disposable diaper according to a first embodiment of the present invention in an unfolded state, and FIG. 2 is a partially cutaway plan view of a disposable diaper according to a second embodiment of the present invention in an unfolded state. , FIG. 3 is a perspective view showing a method for manufacturing a disposable diaper according to the first embodiment of the present invention, FIG. 4 is a perspective view showing a method for manufacturing a disposable diaper according to the second embodiment, and FIG. It is a perspective view showing the manufacturing method of the disposable diaper by implementation B. ■, 21; Disposable diaper 2; Outermost sheet 3; Absorbent main body 12, 13, 19; Elastic member 15; Top sheet 16; Back sheet 17; Absorbent body 31; Reversing device (reversing process) 34; Polymerization roll (fixing process) ) 52; Cutting device (cutting process)

Claims (4)

[Claims] (1) An absorbent body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these two sheets, and a vent to which the absorbent body is fixed in part. 1. A disposable absorbent article comprising: an outermost layer sheet that surrounds the waist and holds the absorbent body against the wearer when worn. (2) The absorbent main body is provided with a pair of first elastic bodies at positions facing each other, the outermost sheet is provided with a second elastic body at positions facing each other, and the first elastic body is provided with a pair of first elastic bodies at positions facing each other. The disposable absorbent article according to claim 1, wherein the elastic body and the second elastic body are arranged at substantially right angles. (3) A strip-shaped outermost layer sheet that is continuously supplied with an absorbent body that has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between these two sheets. A method for producing a disposable absorbent article, comprising: a fixing step of intermittently disposing and fixing the outermost layer sheet to a belt; and a cutting step of cutting the outermost layer sheet between the fixed absorbent bodies. (4) Before the fixing step, a first placement step of arranging a first elastic body in the flow direction of the absorbent body; and a second elastic body being placed in the outermost layer sheet in the flow direction. Claim (3) characterized by comprising: a second arranging step; and an inversion step of rotating and arranging the absorbent main body by substantially 90 degrees when arranging the absorbent main body on the outermost layer sheet. ) The method for producing the disposable absorbent article.