JP2016067602A - Manufacturing method of absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of an absorbent article, the method capable of efficiently and stably manufacturing at low cost the absorbent article in which a leakage from a longitudinal end of an absorbing body is effectively prevented.SOLUTION: A cut is made to a belt-shaped raw sheet 10A along a traveling direction MD1, and the sheet is cut into a first sheet 11 and a second sheet 12. A first coating body 5 obtained by cutting a first sheet 5 into unit length is bonded in a non-skin facing surface of an absorbing body 2. The absorbing body 2 is bridged over continuous assemblies 310, 320 of a traveling exterior body, and is intermittently arranged and bonded in a traveling direction MD2, and thereby an absorbent article precursor continuous assembly is manufactured. A cut is made along the traveling direction MD2 to a second sheet 12, and the sheet is cut into two pieces of coating body continuous assemblies 65, 75. Second coating bodies 6, 7 obtained by cutting them into unit length are bonded to the skin facing surface of the longitudinal both ends of each of a plurality of absorbing bodies 2 in the absorbent article precursor continuous assembly.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a method for manufacturing an absorbent article such as a pants-type disposable diaper.

  Conventionally, as a pants-type disposable diaper, it is provided with an absorbent main body and an exterior body that is arranged on the non-skin-facing surface side of the absorbent main body and fixes the absorbent main body, and corresponds to the wearer's front-back direction The exterior body has a longitudinal direction and a lateral direction perpendicular to the longitudinal direction, and has a ventral side portion disposed on the abdomen side of the wearer and a dorsal side portion disposed on the back side in the longitudinal direction when worn. In which the side edges along the longitudinal direction of the exterior body ventral region located on the ventral side and the exterior body backside region located on the back side are joined together to form a pair of side seal portions, a waist opening, and What is formed with a pair of leg openings is widely used. Moreover, in the pants-type disposable diaper having such a configuration, the skin-facing surface at the longitudinal end of the absorbent main body is leak-proof for the purpose of preventing leakage of excretion fluid such as urine from the vertical end of the absorbent main body. Covering with a sheet is performed. In addition, the non-skin facing surface of the absorbent main body is usually formed of a resin film from the viewpoint of leakage prevention. Generally, the resin film is not good in touch and appearance, so the non-skin facing surface of the absorbent main body. In a diaper configured to be exposed to the outside, the non-skin facing surface (exposed portion) of the absorbent main body is covered with a sheet having a good touch such as a nonwoven fabric.

  Regarding a pants-type disposable diaper provided with a leak-proof sheet, for example, Patent Document 1 discloses that the length of the outer layer sheet constituting the exterior body is longer than that of the inner layer sheet constituting the exterior body. When the two sheet materials are overlapped, the extended portion of the outer layer sheet from the outer edge in the longitudinal direction of the inner layer sheet is folded back to the inner layer sheet side, and The underpants type disposable diaper which comprises the structure by which the longitudinal direction edge part of an absorptive main body is distribute | arranged between the inner layer sheets is described.

  As described above, the technique relating to the leak-proof sheet described in Patent Document 1 folds the outer layer sheet that forms the non-skin facing surface of the two-layered exterior body to the inner layer sheet side that forms the skin facing surface, thereby preventing the leakage. In contrast to forming a leakage sheet, Patent Document 2 uses a fixing sheet separate from the exterior body as the leakage prevention sheet, and fixes the skin facing surfaces at both longitudinal ends of the absorbent main body. It is described that each sheet is individually coated. The fixing sheet is disposed at both longitudinal end portions of the absorbent main body and the vicinity thereof, and is not disposed at the longitudinal end portion of the exterior body.

Special table 2008-508082 JP 2011-98062 A

  Since the main purpose of disposing the leak-proof sheet is to prevent leakage from the longitudinal end of the absorbent main body, in order to achieve the purpose, the longitudinal end of the absorbent main body and the vicinity thereof are connected to the leak-proof sheet. Where it is sufficient to cover with the sheet, as described in Patent Document 1, the method of folding the outer layer sheet constituting the exterior body and covering the longitudinal end of the absorbent main body absorbs the absorption in the exterior body. Because the entire area of the portion located longitudinally outward from the longitudinal end of the absorbent main body is covered with the folded outer layer sheet (leakproof sheet), depending on the fixing position of the absorbent main body, the leakproof sheet may be It becomes disadvantageous in terms of manufacturing cost because it becomes larger than necessary. Further, when the outer layer sheet is folded, a device such as a conveyor exclusively for folding the outer layer sheet having a length corresponding to the flow direction of the outer layer sheet is required, and the use of such a device is disadvantageous in terms of manufacturing cost. There is a fear.

  On the other hand, as described in Patent Document 2, a sheet separate from the exterior body is used as a leak-proof sheet, and the longitudinal end of the absorbent main body and its vicinity (the vertical end of the absorbent main body). In addition to the exterior body, a sheet unwinding machine dedicated to the raw material of the leakproof sheet is required. Since a path line dedicated to the raw material of the leak-proof sheet starting from the unwinding machine is required, the equipment cost is increased, and the manufacturing cost may increase. In addition, when the leak-proof sheet raw material unwound by the unwinding machine includes the one arranged on the one end side in the longitudinal direction and the other arranged on the other end side of the absorbent main body, It is necessary to divide the leaked sheet raw material into two along the unwinding direction with a slitter, and to run a dedicated pass line by applying a predetermined tension to each of the two divided narrow leakproof sheet raw materials. However, when such a narrow leak-proof sheet original fabric is pulled for a long distance in a state where a predetermined tension is applied, the original leak-proof sheet fabric may be reduced in width, resulting in a decrease in product quality.

  Therefore, the present invention relates to a method for manufacturing an absorbent article that can efficiently and stably manufacture an absorbent article in which leakage from the longitudinal end portion of the absorbent main body is effectively prevented.

  The present invention comprises an absorbent main body and an exterior body that is arranged on the non-skin-facing surface side of the absorbent main body and fixes the absorbent main body, and a longitudinal direction corresponding to the front-rear direction of the wearer, and this A lateral direction perpendicular to the wearer, and a longitudinal side of an abdominal side portion disposed on the abdomen side of the wearer and a back side portion disposed on the back side when worn, The outer body is divided into an exterior body ventral region and a back portion of the exterior body, and the absorbent main body extends between the exterior body ventral region and the exterior body back side region. The non-skin-facing surface of the absorbent main body is covered with a first covering body that is separate from the exterior body, and the skin-facing surfaces at both longitudinal ends of the absorbent main body are fixed. A method of manufacturing an absorbent article that is individually coated with a second covering body that is separate from the exterior body, and is a single belt that is running Cut the original sheet into a first sheet constituting the first covering and a second sheet constituting the second covering, along the running direction. Cutting the belt-like first sheet in the process in a direction intersecting the traveling direction to obtain the first covering body, and the first covering body on the non-skin facing surface of the absorbent main body A first covering body joining step to join the plurality of absorbent main bodies joined to the first covering body, and a continuous body of the exterior body ventral region and the exterior body back side region of the traveling body A step of producing an absorbent article precursor continuum by crossing over the continuum and intermittently arranging and joining the continuum in the running direction, and a cut along the running direction in the second sheet during running And cut it into two sheets, and the two cut sheets Cut in a direction to obtain the second covering, and the second covering is opposed to the skin at both longitudinal ends of each of the plurality of absorbent main bodies in the running absorbent article precursor continuum The manufacturing method of the absorptive article which has the 2nd covering body joining process joined to a field is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the absorbent article which can manufacture the absorbent article in which the leak from the longitudinal direction edge part of an absorptive main body was prevented effectively at low cost efficiently was provided.

FIG. 1 is a perspective view showing an example of a pants-type disposable diaper which is an embodiment of an absorbent article manufactured by carrying out the manufacturing method of the present invention. FIG. 2 is a plan view of the diaper shown in FIG. 1 on the skin-facing surface side showing a developed state in which the elastic members of the respective parts are extended to expand in a flat shape. 3 is a cross-sectional view schematically showing a cross section taken along the line II (cross section along the vertical direction) of FIG. 4A is a cross-sectional view schematically showing a cross section taken along the line II-II in FIG. 2 (cross section along the horizontal direction), and FIG. 4B is a cross section taken along the line III-III in FIG. It is sectional drawing which shows a cross section typically. FIG. 5 is a schematic view of one embodiment of the method for producing an absorbent article of the present invention. FIG. 6 is a schematic view of one embodiment of the first covering body joining step in the method for producing an absorbent article of the present invention.

  Hereinafter, first, an absorbent article manufactured by carrying out the method for manufacturing an absorbent article of the present invention will be described with reference to the drawings based on a pants-type disposable diaper (pants-type absorbent article) which is a preferred embodiment thereof. To do. As shown in FIGS. 1 to 4, the pants-type disposable diaper 1 according to the present embodiment is disposed on the non-skin facing surface side of the absorbent main body 2 and the absorbent main body 2 to fix the absorbent main body 2. An abdomen side portion A, which has a longitudinal direction X corresponding to the front-rear direction of the wearer and a lateral direction Y orthogonal thereto, and is disposed on the abdomen side of the wearer when worn; An exterior body located on the ventral side A of the exterior body 3 having a back side part B disposed on the back side and a crotch part C positioned between them and disposed on the crotch part of the wearer in the longitudinal direction X The side edges 3s and 3s along the longitudinal direction X of the abdominal region (the abdominal sheet member 31 described later) and the exterior body back side region (the back side sheet member 32 described later) positioned in the back side B are joined together. A pair of side seal portions S, S, a waist opening WO, and a pair of leg openings LO, LO are formed. There.

  In the present specification, the skin facing surface is a surface directed toward the wearer's skin when worn in the absorbent article and its constituent members (for example, the absorbent main body), and the non-skin facing surface is the absorbent article and It is a surface that is directed to the side opposite to the wearer's skin side (the clothing side such as shorts) when the component member is worn. Moreover, the wearer's front-rear direction is a direction from a portion disposed on the wearer's stomach side to a portion disposed on the back side through a portion disposed between the crotch, and the longitudinal direction X is an absorbent article. Or it corresponds to the direction (longitudinal direction) along the long side of the absorptive main body which is the constituent member, and horizontal direction Y corresponds to the width direction of the absorptive article or the absorptive main body which is the constituent member.

  The absorbent main body 2 includes a liquid-permeable surface sheet 21 that forms the skin-facing surface of the absorbent main body 2, and a liquid-impermeable or liquid-impermeable back surface that forms the non-skin-facing surface of the absorbent main body 2. The sheet 22 and the liquid-retaining absorbent 23 disposed between the sheets 21 and 22 are included, and are formed in a rectangular shape that is long in the X direction. The absorber 23 is configured to include an aggregate (absorbent core) of a water-absorbing substance, and the outer surface of the aggregate is a liquid-permeable sheet such as paper such as tissue paper, various nonwoven fabrics, and an apertured film. It may be covered. As the water-absorbing substance, for example, hydrophilic fibers such as wood pulp and hydrophilized synthetic fibers can be used, and if necessary, granular water-absorbing polymers can be used.

  As shown in FIGS. 2 and 4, a pair of three-dimensional gathers 4, 4 are arranged along the vertical direction X on both sides along the vertical direction X of the skin-facing surface of the absorbent main body 2. Each three-dimensional gather 4 stands up toward the wearer's skin side at least in the crotch C when worn. Each three-dimensional gather 4 includes a liquid-resistant or water-repellent three-dimensional gather forming sheet material 41 and a three-dimensional gather forming elastic member 42 fixed to the sheet material 41. The sheet material 41 is formed from a single belt-like sheet, and one end portion in the lateral direction Y of the sheet material 41 is fixed to the non-skin facing surface of the back sheet 22 with an adhesive (not shown). The other end of the sheet material 41 in the lateral direction Y is folded back outwardly in the lateral direction Y by a folding line (not shown) extending in the longitudinal direction X above the absorber 23. The three-dimensional gather 4 is formed by fixing the elastic member 42 with an adhesive in a state where the elastic member 42 extends in the longitudinal direction X between sheets facing each other by forming the end. One end portion (fixed end) in the lateral direction Y of the sheet material 41 is disposed in the crotch portion C between the back sheet 22 and a first covering 5 described later.

  In the diaper 1 of this embodiment, as shown to FIGS. 1-4 (a), a part of non-skin opposing surface of the absorptive main body 2 is the exterior body 3 (the outer layer sheet 35, the inner layer sheet 36). It is covered with a separate first covering 5. The first covering body 5 mainly plays a role of improving the touch and appearance of the diaper. In order to play the role, the outer covering body 3 on at least the non-skin facing surface (back sheet 22) of the absorbent main body 2 is used. A portion that is not covered is covered with at least the crotch portion C in this embodiment. The first covering 5 is made of the same material as second coverings 6 and 7 described later. The first covering 5 and the absorbent main body 2 (back sheet 22) are joined together by a known adhesive such as a hot-melt adhesive.

  The first covering 5 only needs to be arranged in a range that can play its main role, and the manufacturing cost can be reduced by arranging the first covering 5 limited to such a range. Is possible. From such a viewpoint, the planar view size of the first covering 5 is made smaller than that of the absorbent main body 2. That is, the first covering body 5 in the present embodiment has a rectangular shape in plan view like the absorbent main body 2, but is longer in both the vertical direction X and the horizontal direction Y than the absorbent main body 2. Is short. And since such a comparatively small 1st covering 5 is arranged in the central part of the non-skin opposing surface of relatively large absorptive main part 2, as shown in Drawing 1 and Drawing 2, The absorptive main body 2 extends from the entire periphery of the first covering 5. Both longitudinal ends 5t, 5t of the first covering 5 are interposed between the back sheet 22 and the exterior body 3 (inner layer sheet 36), respectively, and the non-skin facing surface of the first covering 5 ( The portion other than the longitudinal end portions 5t and 5t in the surface opposite to the surface facing the absorbent main body 2 is located in the crotch portion C and exposed to the outside.

  The length in the lateral direction Y of the first covering 5 is not particularly limited, but is usually covered with the back sheet 22 exposed between the ends (fixed ends) in the lateral direction Y of the pair of sheet materials 41, and It is desirable that the first covering 5 is disposed so that the end in the lateral direction Y overlaps the sheet material 41. The length in which the sheet material 41 and the first covering 5 overlap is not particularly limited, but is usually preferably 20 mm or more, more preferably 22.5 mm or more, and preferably 30 mm or less, more preferably 27.5 mm. Hereinafter, more specifically, it is preferably 20 mm or more and 30 mm or less, and more preferably 22.5 mm or more and 27.5 mm or less.

  Further, the length in the vertical direction X of the first covering 5 is not particularly limited, but is usually exposed between the ends in the vertical direction X on the crotch C side of the abdomen seat member 31 and the back seat member 32 described later. It is desirable that the back sheet 22 to be covered is covered and the end of the first covering 5 in the longitudinal direction X overlaps the abdomen sheet member 31 and the back sheet member 32. The length in which the abdominal sheet member 31 and the back sheet member 32 overlap with the first covering 5 is not particularly limited, but is usually preferably 15 mm or more, more preferably 17.5 mm or more, and preferably 25 mm. Hereinafter, it is more preferably 22.5 mm or less, more specifically preferably 15 mm or more and 25 mm or less, and further preferably 17.5 mm or more and 22.5 mm or less.

  As shown in FIGS. 1 to 3, the exterior body 3 is provided with an abdomen sheet member 31 (exterior body abdomen region) disposed on the abdomen side of the wearer when worn and a back sheet member 32 disposed on the back side. It is divided into (exterior body back side region). That is, the pants-type disposable diaper 1 of the present embodiment includes an abdominal sheet member 31 disposed on the wearer's stomach side, a back sheet member 32 disposed on the wearer's back side, And a pair of side seal portions S, S that are joined to each other along the longitudinal direction X of each of the sheet members 31, 32. A waist opening WO and a pair of leg openings LO, LO are formed. In the side seal portion S, the ventral sheet member 31 and the dorsal sheet member 32 are joined by a known joining means such as an adhesive, a heat seal, a high frequency seal, and an ultrasonic seal.

  The ventral sheet member 31 and the dorsal sheet member 32 are respectively an outer layer sheet 35 forming a non-skin facing surface (the outer surface of the diaper 1), an inner layer sheet 36 disposed on the inner surface side of the outer layer sheet 35, 2 and a plurality of thread-like or belt-like elastic members 33 fixed by an adhesive (not shown) between the sheets 35 and 36. In the developed state of the diaper 1 as shown in FIG. It has a long rectangular shape in the direction Y. The two sheets 35 and 36 are joined to each other at a predetermined site by an adhesive (not shown). In the ventral seat member 31 and the dorsal seat member 32, as shown in FIG. 2, the plurality of elastic members 33 are arranged substantially linearly along the lateral direction Y and extend in the lateral direction Y. Thus, they are arranged at a predetermined interval in the vertical direction X. The outer layer sheet 35 and the inner layer sheet 36 constituting the abdominal sheet member 31 and the back sheet member 32 have the same shape (rectangular shape in plan view) and substantially the same size (size).

  In the diaper 1 of this embodiment, as shown in FIGS. 1 to 3, the skin facing surfaces of both end portions 2 </ b> A and 2 </ b> B in the longitudinal direction X of the absorbent main body 2 are the exterior body 3 (outer layer sheet 35, inner layer sheet 36. ) Separately from each other by second covering bodies 6 and 7. The second covering 6 covers the skin facing surface of the longitudinal end 2 </ b> A on the abdominal side A side of the absorbent main body 2, and the second covering 7 is on the back side B side of the absorbent main body 2. The skin facing surface of the longitudinal end 2B is covered. The second coverings 6 and 7 together with the absorbent main body 2 (surface sheet 21), the three-dimensional gather 4 and the inner layer sheet 36 form a part of the skin facing surface (inner surface) of the diaper 1 and are worn. Contact with the person's skin. The second coverings 6 and 7 have the same shape (rectangular shape in plan view) and substantially the same size (size).

  Each of the second coverings 6 and 7 has a rectangular shape that is long in the lateral direction Y in the unfolded state of the diaper 1 as shown in FIG. As shown in FIGS. 2 and 3, the second covering body 6 extends outward in the longitudinal direction X from the longitudinal end portion 2 </ b> A on the ventral side A side of the absorbent main body 2, and the exterior body 3 (inner layer) The sheet 36) has an extending portion 6E that covers the skin-facing surface, and the second covering body 7 is located outside the longitudinal direction X from the longitudinal end portion 2B on the back side portion B side of the absorbent main body 2. And extending portion 7E that covers the skin facing surface of exterior body 3 (inner layer sheet 36). The second coverings 6 and 7 are hot against other constituent members of the diaper 1 [absorbent main body 2 (surface sheet 21), three-dimensional gather 4 and exterior body 3 (inner layer sheet 36)] facing each other. It is joined partially or entirely by a known adhesive such as a melt-type adhesive.

  As shown in FIGS. 2 and 3, the end of the second covering body 6 (extending portion 6E) on the waist opening WO side (the longitudinal outer end along the lateral direction Y of the covering body 6 or in the longitudinal direction X). The outer end portion 6t is along the lateral direction Y of the waist opening WO side of the ventral sheet member 31 (exterior body ventral region) where the covering body 6 is arranged (the ventral sheet member 31). The outer end in the vertical direction or the outer end in the vertical direction X) is located inward in the vertical direction X from 31t. That is, the skin facing surface of the body outer region 31E located outside the absorbent main body 2 in the longitudinal direction X in the ventral sheet member 31 is partially covered by the second covering body 6, It has a portion exposed without being covered with the covering 6. Similarly, an end portion (a longitudinal outer end along the lateral direction Y of the covering body 7 or an outer end portion in the longitudinal direction X) 7t on the waist opening WO side of the second covering body 7 (extending portion 7E) is: The end of the back side sheet member 32 (exterior body back side region) on which the covering body 7 is disposed on the waist opening WO side (vertical outer end or vertical direction along the horizontal direction Y of the back side sheet member 32) (Outward end portion in X) 32t is located inward in the vertical direction X. That is, the skin facing surface of the body outer region 32E located outside the absorbent main body 2 in the longitudinal direction X in the back side seat member 32 is partially covered by the second covering body 7, It has a portion exposed without being covered by the covering body 7.

  The diaper 1 of the present embodiment includes the second coverings 6 and 7 that cover the skin facing surfaces of the longitudinal opposite ends 2A and 2B of the absorbent main body 2, so that the both ends 2A and 2B are separated from each other. Leakage of excretion fluid such as urine is effectively prevented. In the diaper 1 of this embodiment, the skin facing surfaces of the body outer regions 31E and 32E are only partially covered by the second coverings 6 and 7, and as shown in FIG. The second covering bodies 6 and 7 have a shorter length in the lateral direction Y than the outer covering body 3 (outer layer sheet 35 and inner layer sheet 36), that is, the second covering bodies 6 and 7 Since only the portions necessary for preventing leakage from the longitudinal end portions 2A and 2B of the absorbent main body 2 are covered, it is advantageous in terms of manufacturing cost and air permeability.

It is preferable to set the dimension of each part of the diaper 1 of this embodiment as follows. In addition, the dimension (length etc.) of each part shown below is in the state which extended | stretched each elastic member distribute | arranged to the absorbent article.
The length (width) L1 (see FIG. 2) in the longitudinal direction X of the second coverings 6 and 7 is preferably 15 mm or more, more preferably 20 mm or more, and preferably 50 mm or less, more preferably 45 mm or less. More specifically, it is preferably 15 mm or more and 50 mm or less, and more preferably 20 mm or more and 45 mm or less.
The separation distance L2 (see FIG. 2) between the longitudinal outer end 6t of the second covering 6 and the longitudinal outer end 31t of the ventral sheet member 31 (exterior body ventral region), and the second covering 7 The separation distance L2 (see FIG. 2) between the longitudinal outer end 7t and the longitudinal outer end 32t of the back sheet member 32 (exterior body back side region) is preferably 5 mm or more, more preferably 8 mm or more. And it is preferably 30 mm or less, more preferably 20 mm or less, more specifically, preferably 5 mm or more and 30 mm or less, more preferably 8 mm or more and 20 mm or less.

From the viewpoint of the balance between the operational effects of the second coverings 6 and 7 and the manufacturing cost, the ratio between the length in the lateral direction Y of the second coverings 6 and 7 and the length in the lateral direction Y of the absorbent main body 2 ( The former / the latter) is preferably 1.3 or more, more preferably 1.35 or more, and preferably 1.55 or less, more preferably 1.50 or less, more specifically preferably 1.3 or more. It is 1.55 or less, more preferably 1.35 or more and 1.50 or less.
The length in the transverse direction Y of the second coverings 6 and 7 is usually preferably longer than the length in the transverse direction Y of the absorbent body 2, and is usually preferably 190 mm or more, more preferably 200 mm or more, and Preferably they are 275 mm or less, More preferably, they are 270 mm or less, More specifically, Preferably they are 190 mm or more and 275 mm or less, More preferably, they are 190 mm or more and 270 mm or less.
The length of the second covering bodies 6 and 7 in the lateral direction Y is preferably the same as the length of the first covering body 5 in the longitudinal direction X. By doing so, since the length of the 1st covering 5 and the 2nd coverings 6 and 7 per absorptive article cut out from one belt-like original fabric sheet becomes the same, efficiently Absorbent articles can be manufactured.

  The material for forming the diaper 1 of this embodiment will be described. The top sheet 21, the back sheet 22 and the absorber 23 constituting the absorbent main body 2, the outer layer sheet 35 and the inner layer sheet 36 constituting the exterior body 3, and the three-dimensional gather 4 As the sheet material 41 for forming the sheet material, any material can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers. For example, a hydrophilic and liquid-permeable nonwoven fabric or the like can be used as the top sheet 21, and a liquid-impermeable or liquid-impermeable resin film or a laminate of a resin film and a nonwoven fabric can be used as the back sheet 22. Can be used. As the sheet material 41 that forms the three-dimensional gather 4, a stretchable film, a nonwoven fabric, a woven fabric, or a laminated sheet thereof can be used. Examples of the outer body forming elastic member 33 and the three-dimensional gather forming elastic member 42 include polyethylene-α such as natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, ethyl acrylate-ethylene, and the like. A thread-like or belt-like stretchable material made of an olefin copolymer or the like can be used.

As the outer layer sheet 35, the inner layer sheet 36, and the coverings 5, 6 and 7, in addition to nonwoven fabrics such as air-through nonwoven fabric, spunlace nonwoven fabric, spunbond nonwoven fabric, and melt blown nonwoven fabric, liquid-impermeable or liquid-impermeable sheet ( A resin film or the like can also be used. The basis weights of the outer layer sheet 35, the inner layer sheet 36, and the coverings 5, 6 and 7 are each preferably 10 g / m ² or more, more preferably 12 g / m ² or more, and preferably 50 g / m ² or less. More preferably, it is 25 g / m ² or less, more specifically, preferably 10 g / m ² or more and 50 g / m ² or less, more preferably 12 g / m ² or more and 25 g / m ² or less.

  Next, the manufacturing method of the underpants type absorbent article of this invention is demonstrated with reference to drawings based on the manufacturing method of the underpants type disposable diaper 1 which is the preferable embodiment. FIG. 5 shows an outline of a method for producing a pant-type absorbent article according to this embodiment.

  In the manufacturing method of the present embodiment, as shown in FIG. 5, the first covering 5 is formed by making a cut along the traveling direction MD <b> 1 in one strip-shaped raw fabric sheet 10 that is traveling. The first sheet 11 and the second sheet 12 constituting the second coverings 6 and 7 are cut (raw sheet cutting process). More specifically, in the original sheet cutting step, a single belt-shaped original sheet 10 is continuously unwound from an original roll (not shown) by an unwinding machine (not shown). 5, it is made to travel in the direction indicated by reference numeral MD1, and is cut along the traveling direction MD1 in the traveling raw fabric sheet 10 using a known cutting means 50 such as a slitter, and the first sheet 11 and the second sheet Cut into sheets 12.

  And in the manufacturing method of this embodiment, the strip-shaped first sheet 11 cut in the raw sheet cutting process is run in the direction MD1 as it is and bonded to one surface thereof (the surface facing the absorbent main body 2). After applying an adhesive such as a hot-melt adhesive using the agent applying means 60, the traveling first sheet 11 is cut in a direction crossing the traveling direction MD1 to obtain the first covering 5. The first covering body 5 is joined to the non-skin facing surface of the absorbent main body 2 (first covering body joining step). The absorptive main body 2 can be manufactured according to a conventional method. In this embodiment, as shown in FIG. 5, a continuous body 20 of the absorbent main body manufactured in a separate process, that is, a continuous body 20 in which a plurality of the absorbent main bodies 2 are continuous in the longitudinal direction (transport direction MD1), The absorbent body 2 is manufactured by traveling in the same direction as the traveling direction MD1 of the original fabric sheet 10 and cutting into a unit length using a known cutting means (not shown) such as a slitter.

  FIG. 6 shows an outline of one embodiment of the first covering body bonding step. In the embodiment shown in FIG. 6, a cutter roll 51 that cuts a running belt-like first sheet 11 conveyed by a conveying means (not shown) into unit lengths to form a first covering 5, and the covering And a transfer roll 52 for transferring the body 5 to the absorbent main body 2. Above the transfer roll 52, a plurality of absorbent main bodies 2 are conveyed in a line in the direction MD1. The cutter roll 51 cuts the first sheet 11 on the outer peripheral surface of the transfer roll 52, and the first covering 5 obtained by the cutting is sucked and held on the outer peripheral surface of the transfer roll 52, By rotation of the transfer roll 52, it is supplied to the non-skin facing surface of the absorbent main body 2 that runs above the transfer roll 52, and is bonded to the non-skin facing surface by the adhesive previously applied to the covering 5.

  As described above, the plan view dimension of the first covering 5 is smaller than that of the absorbent main body 2, and the length of the covering 5 in the running direction MD <b> 1 (longitudinal direction) is smaller than that of the absorbent main body 2. Short. Therefore, in order to sequentially supply the first covering 5 cut out from the first sheet 11 to each of the plurality of absorbent main bodies 2 traveling in one direction MD1 as in the present embodiment, the covering 5 It is necessary to adjust the speed between the first sheet 11 that is the supply source of the sheet and the absorbent main body 2 that is the supply destination. In this speed adjustment, when the traveling speed of the first sheet 11 (traveling speed before cutting by the cutter roll 51) is V1, and the traveling speed of the absorbent main body 2 is V2, V1 is slower than V2 (V1 < V2). That is, the traveling speed (conveying speed) V1 of the first sheet 11 that is the supply source of the member (first covering 5) having a relatively short length in the traveling direction MD1 is the relative length of the traveling direction MD1. Therefore, the travel speed (conveyance speed) V2 of the long member (absorbent body 2) is made slower.

  The traveling speed of the first cover 5 cut out from the first sheet 11 (the traveling speed on the transfer roll 52) is the same as the traveling speed of the absorbent main body 2. In the first covering body joining step, the plurality of first covering bodies 5 are intermittently supplied to the continuous body 20 of the strip-shaped absorbent main body running in one direction MD1 to join both. Then, the continuous body 20 may be cut into unit lengths to produce the absorbent main body 2 to which the covering body 5 is bonded. The speed between the continuous body 20 and the first sheet 11 in that case The adjustment can be performed in the same manner as described above.

  Moreover, in the manufacturing method of this embodiment, the continuous body 310,320 of an exterior body is manufactured by the continuous body manufacturing process of the exterior body different from the said 1st covering body joining process. The exterior body continuum 310 is a belt-like sheet in which a plurality of ventral sheet members 31 are continuous in the longitudinal direction, and the exterior body continuum 320 is a belt in which a plurality of backside sheet members 32 are continuous in the longitudinal direction. It is a sheet. In the exterior body continuum manufacturing process, each of the exterior body continuums 310 and 320 is manufactured as follows.

  First, as shown in FIG. 5, a plurality of exterior body forming elastic members 33 are arranged on one surface of the belt-like exterior body constituting sheet 30 running in the direction MD2 in a stretched state in which the stretch body is stretched to a predetermined stretch rate. To do. The traveling direction MD2 of the exterior body constituting sheet 30 is opposite to the traveling direction MD1 of the raw fabric sheet 10 and the continuous body 20 of the absorbent main body described above. An adhesive such as a hot-melt adhesive is applied in advance to each elastic member 33 or a portion where the elastic member 33 is to be disposed on one surface of the exterior body constituting sheet 30 by an adhesive application unit (not shown). Is fixed in an expanded state on one surface of the exterior body constituting sheet 30 by the adhesive. Next, the belt-shaped exterior body constituting sheet 30 is folded along a folding line along the traveling direction (longitudinal direction) while maintaining the state in which the plurality of elastic members 33 are arranged. More specifically, both side edges 30s and 30s along the traveling direction MD2 of the exterior body constituting sheet 30 are bent so as to coincide with a virtual center straight line CL that bisects the sheet 30 in the width direction orthogonal to the longitudinal direction. Then, using a known cutting means (not shown) such as a slitter, the folded strip-shaped exterior body constituting sheet 30 is cut along the running direction MD2 and cut into the exterior body continuous bodies 310 and 320. The distance between the separated continuous bodies 310 and 320 is expanded so as to coincide with the distance between the abdominal sheet member 31 and the back sheet member 32 in the diaper 1 which is the manufacturing object. Continue to travel in the traveling direction MD2.

  In addition, you may perform a non-stretching process with respect to the elastic member 33 fixed to the exterior body structure sheet 30 as needed. The elastic member 33 located in the arrangement region of the absorbent main body 2 in the exterior body constituting sheet 30 is usually subjected to a non-stretching process. The non-stretching process of the elastic member 33 is performed by using, for example, a known elastic member cutting means such as a cut roll and an anvil roll formed with a plurality of convex portions, and an arrangement region of the absorbent main body 2 in the exterior body constituting sheet 30. The elastic member 33 positioned at the position of the elastic member 33 is pressed to be divided into a plurality of pieces so that the contraction function of the elastic member 33 is not exhibited.

  And in the manufacturing method of this embodiment, as shown in FIG. 5, a plurality of absorbent main bodies 2 to which the first covering body 5 obtained through the first covering body joining step is joined, The absorbent article precursor continuum is manufactured by disposing and joining the exterior continuum 310, 320 intermittently in the traveling direction MD2. Further, the belt-like second sheet 12 that is running is cut along the running direction MD2 to be cut into two belt-like covering continuums 65, 75, and the two covering continuums 65, 75 are respectively cut in the direction intersecting with the traveling direction MD2 to obtain the second coverings 6 and 7, and the second coverings 6 and 7 are divided into a plurality of the absorbent article precursor continuum during traveling. The absorbent main body 2 is joined to the skin facing surfaces at both longitudinal ends (second covering body joining step).

  More specifically, as shown in FIG. 5, first, the traveling direction of the strip-shaped second sheet 12 cut in the original sheet cutting process is changed from the traveling direction MD1 immediately after the original sheet 10 is cut. It changes to MD2 which is the same direction as the traveling direction of exterior body continuum 310,320, and it uses the well-known cutting means 53, such as a slitter, to the 1st strip | belt-shaped 2nd sheet | seat 12 currently traveling in direction MD2. A cut is made along the traveling direction MD2, and it is divided into a covering continuum 65 constituting the second covering 6 and a covering continuum 75 constituting the second covering 7. The covering body continuous body 65 is a belt-like sheet in which a plurality of second covering bodies 6 (second covering bodies disposed on the ventral side portion A) are continuous in the longitudinal direction, and the covering body continuous body 75 is: The second covering body 7 (second covering body disposed on the back side portion B) is a strip-like sheet that is continuous in the longitudinal direction.

  Next, as shown in FIG. 5, the cut strip-shaped covering continuums 65 and 75 are caused to travel in the direction MD2 as they are, and on one surface thereof (the surface facing the absorbent main body 2 or the exterior body continuums 310 and 320). After applying an adhesive such as a hot-melt adhesive using the adhesive applying means 61, the both coated body continuums 65 and 75 that are running are used using a known cutting means (not shown) such as a cutter roll. Are respectively cut in the direction intersecting with the traveling direction MD2, more specifically in the width direction CD of the covering continuums 65 and 75 to obtain the second coverings 6 and 7. Further, a hot melt type is used on one surface of each of the exterior body continuums 310 and 320 running in the direction MD2 (a surface facing the absorbent main body 2 and the second covering bodies 6 and 7) using an adhesive application means 62. An adhesive such as an adhesive is applied in advance.

  And as shown in FIG. 5, the 1st coating | coated body 5 was joined with respect to the exterior body continuous bodies 310 and 320 which drive | work in the driving | running direction MD2 in the state parallel to each other at predetermined intervals in the width direction CD. While supplying a plurality of absorptive main bodies 2 intermittently so as to bridge both continuous bodies 310 and 320, the second covering bodies 6 and 7 are supplied from above the absorptive main body 2 (skin facing surface side). And it arrange | positions on the skin opposing surface of the longitudinal direction both ends of this absorptive main body 2. FIG. The absorptive main body 2 supplied in this way is joined to the continuous bodies 310 and 320 by an adhesive previously applied to the exterior body continuous bodies 310 and 320, and the supplied second covering bodies 6 and 7 are The absorbent body 2 and the continuous body 310 or the continuous body 320 are bonded to each other by an adhesive previously applied thereto. Thus, both ends in the longitudinal direction (width direction CD) of the absorbent main body 2 between the exterior body continuous body 310 and the second cover body 6 and between the exterior body continuous body 320 and the second cover body 7. The part is fixed, and a belt-like diaper continuous body (absorbent article continuous body) 25 is obtained.

  Thus, in the second covering body joining step, the second covering body 6 cut out from the covering body continuous body 65 is applied to the strip-shaped exterior body continuous body 310 that is traveling in one direction MD2 in its traveling direction. While supplying intermittently sequentially with respect to MD2, the 2nd coating | coated body 7 cut out from the coating | coated body continuous body 75 is made into the strip | belt-shaped exterior body continuous body 320 currently drive | working to the same direction MD2 with respect to the traveling direction MD2. In order to intermittently supply the coverings 6, 7, the continuous covering bodies 65, 75 (the second supply source of the coverings 6, 7) It is necessary to adjust the speed between the sheet 12) and the continuous body 310, 320 as the supply destination. In this speed adjustment, when the traveling speed of the covering continuums 65 and 75 (second sheet 12) is V3 and the traveling speed of the continuums 310 and 320 is V4, V3 is slower than V4 (V3 <V4). To be done). That is, the traveling speed (conveying speed) of the covering body continuous bodies 65 and 75 (second sheet 12), which is a supply source of the members (second covering bodies 6 and 7) having a relatively short length in the traveling direction MD2. V3 is set to be slower than the traveling speed (conveying speed) V4 of the member (exterior body continuum 310, 320) having a relatively long length in the traveling direction MD2. This speed adjustment is performed by, for example, an apparatus as shown in FIG. 6, that is, a cutter roll that cuts the covering continuous bodies 65 and 75 into unit lengths, and the coverings 6 and 7 obtained by the cutting are continuous bodies 310 and 320. It can carry out using the transfer roll supplied to.

  Next, as shown in FIG. 5, the belt-like diaper continuum 25 is folded in two in the width direction CD so that the continuum 310 and the continuum 320 are overlapped. A plurality of joining portions 26 are formed at predetermined intervals in the traveling direction MD2 using known joining means such as an adhesive, heat embossing means, and ultrasonic processing means. After that, a plurality of diapers 1 are continuously obtained by cutting the folded diaper continuous body 25 folded in two at each joint portion 26. The cut end portion formed by such cutting becomes the side seal portion S of each diaper 1.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, in the above-described embodiment, the outer package 3 is divided into the abdominal sheet member 31 and the back sheet member 32, and the absorbent main body 2 is bridged and fixed to both the sheet members 31 and 32. The absorbent article that is the manufacturing object of the manufacturing method of the present invention is not limited to the one having such a configuration. For example, the outer package is not divided into the ventral part and the dorsal part, It may be an hourglass-like outer covering covering the side part, the crotch part and the back side part. Moreover, in the said embodiment, although the manufacturing method of the underpants type disposable diaper was demonstrated, you may relate to a tape type disposable diaper. Regarding the above-described embodiment of the present invention, the following additional notes are disclosed.

<1>
An absorbent main body and an exterior body arranged on the non-skin-facing surface side of the absorbent main body to fix the absorbent main body, and a lateral direction orthogonal to the longitudinal direction corresponding to the wearer's front-rear direction And a back side portion disposed on the back side of the wearer when worn and a back side portion disposed on the back side in the longitudinal direction, and the exterior body is located on the abdominal side portion It is divided into an exterior body ventral region and an exterior body backside region located on the back side, and the absorbent main body is bridged and fixed to the exterior body ventral region and the exterior body backside region. And
The non-skin-facing surface of the absorbent main body is covered with a first covering body that is separate from the exterior body, and the skin-facing surfaces at both longitudinal ends of the absorbent body are separate from the exterior body. A method of manufacturing an absorbent article that is individually coated with a second covering of the body,
A first sheet constituting the first covering body and a second sheet constituting the second covering body are cut along the traveling direction in one belt-shaped raw fabric sheet that is traveling Raw sheet cutting process to cut into
The belt-like first sheet that is running is cut in a direction intersecting the running direction to obtain the first covering, and the first covering is joined to the non-skin facing surface of the absorbent main body. A first covering body joining step;
The plurality of absorptive main bodies to which the first covering body is joined are bridged between a continuous body of the exterior body ventral region and a continuous body of the exterior body back side region while traveling, with respect to the traveling direction. A step of intermittently arranging and joining to produce an absorbent article precursor continuum;
The second sheet being traveled is cut in two along the traveling direction and cut into two sheets, and each of the two separated sheets is cut in a direction intersecting with the traveling direction to form the second covering body. A second covering body joining step for joining the second covering bodies to the skin facing surfaces at both longitudinal ends of each of the plurality of absorbent main bodies in the running absorbent article precursor continuous body; The manufacturing method of the absorbent article which has this.

<2>
<1>, wherein the first covering has a shorter length in the longitudinal direction than the absorbent main body, and the second covering has a shorter length in the lateral direction than the exterior body. Manufacturing method for absorbent articles.
<3>
The outer end portion in the longitudinal direction of the second covering body is more than the outer end portion in the longitudinal direction of the exterior body ventral region or the exterior body back side region in which the second covering body is disposed. The method for producing an absorbent article according to <1> or <2>, which is located inward in the longitudinal direction.

<4>
When the traveling speed of the first sheet (traveling speed before cutting by the cutter roll) is V1, and the traveling speed of the absorbent main body is V2, the speed adjustment is performed so that V1 <V2. The manufacturing method of the absorbent article as described in any one of <3>.
<5>
Any one of <1> to <4>, in which the speed adjustment is performed so that V3 <V4, where V3 is a traveling speed of the second sheet and V4 is a traveling speed of the continuous body of the exterior body. The manufacturing method of the absorbent article as described in any one of.
<6>
In the first covering body joining step, after applying an adhesive to one surface (opposite surface to the absorbent main body) of the band-shaped first sheet cut in the raw sheet cutting step, The method for producing an absorbent article according to any one of <1> to <5>, wherein the first sheet 5 is obtained by cutting the first sheet in a direction intersecting the traveling direction.
<7>
A process for producing a continuous body of the exterior body, wherein the adhesive is in an expanded state in which a plurality of exterior body forming elastic members are stretched at a predetermined elongation rate on one surface of a belt-shaped exterior body constituting sheet. Then, the belt-shaped exterior body constituting sheet is folded at a folding line along the traveling direction (longitudinal direction) while maintaining the state in which the plurality of elastic members are arranged, and the folded sheet is folded. <1> to <6>, wherein the belt-shaped exterior body constituting sheet is cut along the running direction and cut into a plurality of (2) continuous bodies of the exterior bodies. Manufacturing method for absorbent articles.

<8>
The manufacturing method of the absorbent article as described in any one of said <1>-<7> whose length of the vertical direction of a said 1st coating body and the length of the horizontal direction of a said 2nd coating body are the same. .
<9>
The absorbent main body includes a liquid-permeable surface sheet that forms a skin-facing surface, a liquid-impermeable or liquid-permeable back sheet that forms a non-skin-facing surface, and a liquid holding member disposed between both sheets. Composed of sex absorbers,
A pair of three-dimensional gathers are arranged along the vertical direction on both side portions along the vertical direction of the skin-facing surface of the absorbent main body, and a pair of both side portions along the vertical direction of the non-skin facing surface of the absorbent main body are paired with each other. Covered with a pair of sheet materials constituting the three-dimensional gather of
The first covering body covers the back sheet exposed between the lateral ends (fixed ends) of the pair of sheet materials, and the lateral end portions of the first covering body and the sheet material. The manufacturing method of the absorbent article as described in any one of said <1>-<8> arrange | positioned so that it may overlap.
<10>
The overlapping length of the sheet material and the first covering 5 is preferably 20 mm or more, more preferably 22.5 mm or more, and preferably 30 mm or less, more preferably 27.5 mm or less, more specifically. Is preferably 20 mm or more and 30 mm or less, more preferably 22.5 mm or more and 27.5 mm or less, The method for producing an absorbent article according to <9>.
<11>
The said absorptive main body is spanned and fixed over the said exterior body abdominal side area | region and the said exterior body back side area | region, The said back sheet is parts other than the longitudinal direction center part (part located in a crotch part) (Parts located on the ventral side and dorsal side) are covered by both these areas,
The first covering body covers the longitudinal center portion of the back sheet, and the longitudinal end portion of the first covering body overlaps the exterior body ventral region and the exterior body back side region. The method for manufacturing an absorbent article according to <9> or <10>, wherein the absorbent article has a long length.
<12>
The length in which the first covering body 5 overlaps the exterior body ventral region and the exterior body back side region is preferably 15 mm or more, more preferably 17.5 mm or more, and preferably 25 mm or less, more preferably. Is 22.5 mm or less, more specifically, preferably 15 mm or more and 25 mm or less, more preferably 17.5 mm or more and 22.5 mm or less, The method for producing an absorbent article according to <11>.

<13>
The ratio of the lateral length of the second covering to the lateral length of the absorbent body (the former / the latter) is preferably 1.3 or more, more preferably 1.35 or more, and preferably <1> to <12, which is 1.55 or less, more preferably 1.50 or less, more specifically preferably 1.3 or more and 1.55 or less, and more preferably 1.35 or more and 1.50 or less. The manufacturing method of the absorbent article as described in any one of>.
<14>
The method for producing an absorbent article according to any one of <1> to <13>, wherein the lateral length of the second covering is longer than the lateral length of the absorbent main body.
<15>
The lateral length of the second covering is preferably 190 mm or more, more preferably 200 mm or more, and preferably 275 mm or less, more preferably 270 mm or less, more specifically preferably 190 mm or more and 275 mm or less. Furthermore, More preferably, it is 190 mm or more and 270 mm or less, The manufacturing method of the absorbent article as described in any one of said <1>-<14>.

<16>
The first cover and the second cover are selected from the group consisting of an air-through nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a meltblown nonwoven fabric, and a liquid-impermeable or liquid-impermeable sheet (resin film). The manufacturing method of the absorbent article as described in any one of said <1>-<15> comprised including 1 or more types.
<17>
The basis weights of the first covering body and the second covering body are each preferably 10 g / m ² or more, more preferably 12 g / m ² or more, and preferably 50 g / m ² or less, more preferably Any of <1> to <16>, which is 25 g / m ² or less, more specifically, preferably 10 g / m ² or more and 50 g / m ² or less, and more preferably 12 g / m ² or more and 25 g / m ² or less. A method for producing an absorbent article according to claim 1.
<18>
In the absorbent article, a pair of side seal portions, a waist opening portion, and a pair of leg openings are formed by joining both side edges along the longitudinal direction of each of the exterior body ventral region and the exterior body back side region. The manufacturing method of the absorbent article as described in any one of said <1>-<17> which is an underpants type absorbent article.

1 Pants-type disposable diaper (absorbent article)
2 Absorbent body 21 Top sheet 22 Back sheet 23 Absorber 3 Exterior body 31 Ventral sheet member (exterior body ventral region)
32 Back sheet member (exterior body back side area)
33 exterior member forming elastic member 35 outer layer sheet 36 inner layer sheet 4 three-dimensional gather 5 first covering bodies 6 and 7 second covering body 10 original fabric sheet 11 first sheet 12 second sheet 20 continuous absorbent main body Body 30 Exterior body configuration sheet 51 Cutter roll 52 Transfer rolls 65, 75 Cover body continuum 310, 320 Exterior body continuum 25 Diaper continuum 26 Joint A Abdominal side B Back side C Crotch X X Vertical Y Horizontal

Claims (8)

An absorbent main body and an exterior body arranged on the non-skin-facing surface side of the absorbent main body to fix the absorbent main body, and a lateral direction orthogonal to the longitudinal direction corresponding to the wearer's front-rear direction And a back side portion disposed on the back side of the wearer when worn and a back side portion disposed on the back side in the longitudinal direction, and the exterior body is located on the abdominal side portion It is divided into an exterior body ventral region and an exterior body backside region located on the back side, and the absorbent main body is bridged and fixed to the exterior body ventral region and the exterior body backside region. And
The non-skin-facing surface of the absorbent main body is covered with a first covering body that is separate from the exterior body, and the skin-facing surfaces at both longitudinal ends of the absorbent body are separate from the exterior body. A method of manufacturing an absorbent article that is individually coated with a second covering of the body,
A first sheet constituting the first covering body and a second sheet constituting the second covering body are cut along the traveling direction in one belt-shaped raw fabric sheet that is traveling Raw sheet cutting process to cut into
The belt-like first sheet that is running is cut in a direction intersecting the running direction to obtain the first covering, and the first covering is joined to the non-skin facing surface of the absorbent main body. A first covering body joining step;
The plurality of absorptive main bodies to which the first covering body is joined are bridged between a continuous body of the exterior body ventral region and a continuous body of the exterior body back side region while traveling, with respect to the traveling direction. A step of intermittently arranging and joining to produce an absorbent article precursor continuum;
The second sheet being traveled is cut in two along the traveling direction and cut into two sheets, and each of the two separated sheets is cut in a direction intersecting with the traveling direction to form the second covering body. A second covering body joining step for joining the second covering bodies to the skin facing surfaces at both longitudinal ends of each of the plurality of absorbent main bodies in the running absorbent article precursor continuous body; The manufacturing method of the absorbent article which has this.   2. The first covering body according to claim 1, wherein the first covering body has a shorter length in the longitudinal direction than the absorbent main body, and the second covering body has a shorter length in the lateral direction than the exterior body. Manufacturing method of absorbent article.   The outer end portion in the longitudinal direction of the second covering body is more than the outer end portion in the longitudinal direction of the exterior body ventral region or the exterior body back side region in which the second covering body is disposed. The manufacturing method of the absorbent article of Claim 1 or 2 located in the vertical direction inner side.   The manufacturing method of the absorbent article as described in any one of Claims 1-3 with which the length of the vertical direction of a said 1st coating body and the length of the horizontal direction of a said 2nd coating body are the same.   The method of manufacturing an absorbent article according to any one of claims 1 to 4, wherein a length of the second covering body in the horizontal direction is longer than a length of the absorbent main body in the horizontal direction. The absorbent main body includes a liquid-permeable surface sheet that forms a skin-facing surface, a liquid-impermeable or liquid-permeable back sheet that forms a non-skin-facing surface, and a liquid holding member disposed between both sheets. Composed of sex absorbers,
A pair of three-dimensional gathers are arranged along the vertical direction on both side portions along the vertical direction of the skin-facing surface of the absorbent main body, and a pair of both side portions along the vertical direction of the non-skin facing surface of the absorbent main body are paired with each other. Covered with a pair of sheet materials constituting the three-dimensional gather of
The first covering is disposed so as to cover the back sheet exposed between the lateral ends of the pair of sheet members, and the lateral ends of the first coverings overlap the sheet members. The manufacturing method of the absorbent article as described in any one of Claims 1-5. The absorbent main body spans and is fixed to the exterior body ventral region and the exterior body back side region, and the back sheet is covered with these regions except for the longitudinal center portion. ,
The first covering body covers the longitudinal center portion of the back sheet, and the longitudinal end portion of the first covering body overlaps the exterior body ventral region and the exterior body back side region. The method for producing an absorbent article according to claim 6, wherein the absorbent article has a long length.   In the absorbent article, a pair of side seal portions, a waist opening portion, and a pair of leg openings are formed by joining both side edges along the longitudinal direction of each of the exterior body ventral region and the exterior body back side region. The method for producing an absorbent article according to any one of claims 1 to 7, wherein the absorbent article is a pants-type absorbent article.

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