JP5728907B2 - Method for manufacturing absorbent article - Google Patents

Description

  The present invention relates to a two-piece type absorbent article comprising an exterior body that encloses the waist of a wearer, and an absorbent pad that encloses an absorbent body, and an absorbent main body that encapsulates the inseam of the wearer. It is related with the manufacturing method. More specifically, when manufacturing the exterior body, the stretchable material fixed in a stretched state between the layers of the laminated nonwoven fabric sheets is cut at the overlapping portion with the absorber, and the overlapped portion of the exterior body is cut into the overlapping portion. The present invention relates to a method for obtaining an exterior body in which the contraction force of the stretchable material is difficult to act.

  Conventionally, as an absorbent article, for example, the absorbent body 16B enveloping the waist of the wearer, such as the absorbent article 1A shown in FIG. 6, and an absorbent pad in which the absorbent body 22B is contained, the wearer's inseam There is known a two-piece type absorbent article including an absorbent main body 14B for encapsulating a bag.

  An absorbent article 1A shown in FIG. 6 includes a pant-type exterior body 16B in which one waist opening 10B and a pair of left and right leg openings 12C and 12D are formed. The waist opening 10B and the leg openings 12C and 12D are formed by joining both side edges of the abdominal sheet and both side edges of the back sheet by the joints 8C and 8D. The absorptive main body 14B is arrange | positioned and fixed inside the exterior body 16B which exhibits a pants type.

  The outer package 16B in the absorbent article is stretchable in which stretchable materials such as Tammy stretchable materials 44C and 44D, waist stretchable materials 42C and 42D, and leg stretchable materials 40B and 40C are fixed in a stretched state between layers of laminated nonwoven fabric sheets. It consists of a sheet | seat, and it is comprised so that the fit property with respect to a wearer's waist, abdomen, a leg, etc. may be improved with the said elastic material, and the leakage of excrement does not generate | occur | produce (for example, refer patent document 1).

  Further, in order to prevent a situation in which the absorbent body 22B is twisted and the absorbability and fitability are impaired, the portion of the exterior body 16B where the absorbent body 22B is superposed (absorber superposed portion) is in an extended state. In general, the elastic members 44C, 44D and the like are not arranged, and the contraction force is not applied to the absorber overlapping portion.

  The said absorbent article can be manufactured, for example by the following processes 1) -3). 1) An original tammy stretchable material, which is a material for the tammy stretchable material, is fixed in an extended state between the first nonwoven fabric sheet and the second nonwoven fabric sheet, which is a material for the outer package, to obtain a stretchable sheet. 2) At this time, the adhesive for fixing the original Tammy stretchable material is not attached to the portion corresponding to the absorber overlapping portion (the overlapping portion equivalent portion), but is attached to the portion other than the overlapping portion equivalent portion. 3) The original tammy stretchable material is cut at a portion corresponding to the overlapping portion of the stretchable sheet. According to the steps 1) to 3), the stretched original tammy stretchable material is fixed in a portion other than the overlapping portion equivalent portion, and an exterior body in which the original tammy stretchable material is not fixed in the overlapped portion equivalent portion is obtained. Can do.

  As a method of cutting the original tammy stretchable material in the step 3), the original tammy is interposed between the first roll having a plurality of cutting protrusions and the second roll disposed so as to face the first roll. A method is known in which a first nonwoven fabric sheet and a second nonwoven fabric sheet in which stretchable materials are arranged and fixed are sandwiched and pressed (for example, see Patent Documents 2 to 5).

Registered Utility Model No. 3024357 Japanese Patent No. 3545210 JP 2008-229006 A JP 2008-229007 A JP 2008-264480 A

  By the way, in the said method, the adhesive agent is not adhered to the overlapping part equivalent part of a 1st nonwoven fabric sheet and a 2nd nonwoven fabric sheet. That is, in the overlapping portion corresponding portion, both sheets are separated from each other without being fixed to each other, and the original Tammy stretchable material freely moves. Therefore, there is a risk that a part of the original Tammy stretchable material cannot be cut and remains in an expanded state.

  In order to prevent the problem, the cutting protrusions of the first roll are heated to facilitate the cutting of the elastic material, and the first nonwoven fabric sheet and the second nonwoven fabric sheet are thermally fused, and the first nonwoven fabric sheet and the second nonwoven fabric sheet. A method of fixing the overlapping portions corresponding to each other is also conceivable.

  However, in such a method, if both sheets are sufficiently fixed, the cutting points of the elastic material also increase, so that the finely cut elastic material pieces remain, which may impair the product appearance of the absorbent article. was there. In addition, since the cutting point of the elastic material also serves as a bonding point for fixing both sheets, the formation position of the bonding point depends on the arrangement position of the elastic material, and the bonding point cannot be formed at a desired position. If it does so, there existed a subject that a joint point (heat-fusion part) may spoil the product design of an absorptive article.

  The present invention has been made to solve such problems of the prior art, and it is possible to prevent defects in the appearance of the product due to cutting of the elastic material fixed to the exterior body and joining of the nonwoven fabric sheets. Provided is a method for manufacturing an absorbent article.

  As a result of intensive studies to solve the problems of the prior art as described above, the present inventor does not simultaneously perform cutting of the elastic material and joining of the nonwoven fabric sheets, but by performing the process in a separate process. As a result, the present invention has been completed. Specifically, the present invention provides the following method for manufacturing an absorbent article.

[1] An elastic body in which a tammy elastic material is fixed in an extended state between layers of laminated nonwoven fabric sheets, and an outer body that encloses the wearer's waist, and an absorbent pad that includes an absorbent body. A method for manufacturing an absorbent article comprising an absorbent main body encapsulating a wearer's crotch, the first nonwoven sheet and the second nonwoven sheet as materials for the stretch sheet, and the material for the Tammy stretch material A raw tammy stretchable material, a portion of the first nonwoven fabric sheet and the second nonwoven fabric sheet that corresponds to a central portion in the width direction of the exterior body and where the original tammy stretchable material is disposed, and the original In the tammy stretchable material, the adhesive is not attached to any part of the part corresponding to the central part in the width direction of the exterior body, and the adhesive is not attached to the part. A portion corresponding to the left and right side edge portions of the exterior body and a portion where the original tammy stretchable material is disposed; a portion corresponding to the left and right side edge portions of the exterior body in the second nonwoven fabric sheet; and Adhesive is adhered to at least one of a portion where the original tammy stretchable material is disposed and a portion of the original tammy stretchable material which is disposed on the left and right side edge portions of the exterior body. An adhesive attaching step for forming an agent attaching portion, an elastic material arranging step for continuously arranging the original Tammy elastic material in a stretched state on the surface of either the first nonwoven fabric sheet or the second nonwoven fabric sheet, By bonding the first nonwoven fabric sheet and the second nonwoven fabric sheet through an adhesive adhering portion, the original tammy stretchable material is fixed in an expanded state between the first nonwoven fabric sheet and the second nonwoven fabric sheet. The elastic material fixing step, and the portion of the original tammy elastic material that is disposed between the adhesive non-adhered portion of the first non-woven fabric sheet and the adhesive non-adhesive portion of the second non-woven fabric sheet. Stretch material cutting step, the adhesive non-adhering part of the first nonwoven sheet and the adhesive non-adhering part of the second nonwoven sheet, the adhesive non-adhering part of the first nonwoven sheet and the second A sheet joining step for joining so that at least a part other than both ends of the non-woven fabric sheet and the adhesive non-adhering portion is not separated from each other, and the adhesive attaching step, the elastic material arranging step, and the elastic material fixing step After performing, it is the method of performing the said sheet | seat joining process, and then performing the said elastic material cutting process, and the said sheet | seat joining process is the said original tammy elastic material in the said adhesive agent non-adhesion part of a said 1st nonwoven fabric sheet. The manufacturing method of the absorbent article which joins a part other than the part in which the said original tammy elastic material is arrange | positioned in the said adhesive non-adhesion part of the said 2nd nonwoven fabric sheet | seat other than the part in which this is arrange | positioned .

[ 2 ] The original elastic sheet obtained by the elastic material fixing step, in which the original tammy elastic material is fixed in an extended state between the first nonwoven fabric sheet and the second nonwoven fabric sheet, extends along the peripheral surface of the drum. After the sheet joining step is performed by pressing a fusion roll having a plurality of fusion projections on the circumferential surface against the original elastic sheet traveling on the circumferential surface of the drum, The absorbent article according to [ 1 ], wherein the elastic material cutting step is performed by pressing a cutting roll having a plurality of cutting protrusions on the peripheral surface against the original elastic sheet traveling on the peripheral surface of the drum. Production method.

  The manufacturing method of the absorbent article of this invention can prevent the defect of the product external appearance accompanying the cutting | disconnection of the elastic material fixed to an exterior body, and joining of nonwoven fabric sheets. In particular, when a design such as a character is attached to the abdomen portion of the absorbent article, the visual recognition of the design is hardly hindered, and the product appearance can be improved.

It is a schematic process drawing which shows typically one embodiment of the manufacturing method of the present invention. It is a schematic plan view which shows typically the state before the adhesive agent adhesion process P1 of the manufacturing method shown in FIG. It is a schematic plan view which shows typically the adhesive agent adhesion process P1 of the manufacturing method shown in FIG. It is a schematic plan view which shows typically the elastic material arrangement | positioning process P2 of the manufacturing method shown in FIG. It is a schematic plan view which shows typically the elastic material fixing process P3 of the manufacturing method shown in FIG. It is a schematic plan view which shows typically the elastic material cutting process P4 of the manufacturing method shown in FIG. It is a schematic plan view which shows typically the sheet | seat joining process P5 of the manufacturing method shown in FIG. It is a 1st schematic plan view which shows typically the absorptive main body arrangement | positioning process P6 of the manufacturing method shown in FIG. It is a 2nd schematic top view which shows typically the absorptive main body arrangement | positioning process P6 of the manufacturing method shown in FIG. It is a schematic plan view which shows typically another embodiment of the sheet | seat joining process of the manufacturing method of this invention. It is a schematic plan view which shows typically another embodiment of the elastic material cutting process of the manufacturing method of this invention. It is a schematic side view which shows typically the manufacturing apparatus for enforcing the manufacturing method shown to FIG. 3A and 3B. It is a schematic front view which shows typically one Embodiment of an absorbent article. FIG. 5B is a schematic plan view schematically showing a state where the absorbent article shown in FIG. 5A is developed and viewed from the inside of the absorbent article. FIG. 5B is a schematic plan view schematically showing a state in which the absorbent article shown in FIG. 5A is developed and viewed from the outside of the absorbent article. FIG. 5B is a schematic end view schematically showing an A-A ′ cut end surface of the absorbent article shown in FIG. 5B. FIG. 5B is a schematic end view schematically showing a B-B ′ cut end surface of the absorbent article shown in FIG. 5B. It is a schematic perspective view which shows typically another embodiment of an absorbent article.

  Hereinafter, the form for implementing the manufacturing method of this invention is demonstrated concretely, referring FIG. 1, FIG. 2A-FIG. 2H, FIG. 3A-FIG. 3B, and FIG. The manufacturing method shown in these drawings is an example in the case of manufacturing the absorbent article 1A shown in FIGS. 5A to 5E. However, the manufacturing method of the present invention broadly encompasses manufacturing methods having the invention-specific matters, and is not limited to the following embodiments. 1, FIG. 2A to FIG. 2H and FIG. 3A to FIG. 3B are drawn in a form in which a part of the original waist elastic materials 72A and 72B and the original tammy elastic materials 64A, 64B and 74A are omitted for the sake of drawing.

[1] Application target of the production method of the present invention:
Among the absorbent articles, the production method of the present invention produces so-called two-piece type absorbent articles having an outer package 16A such as the absorbent article 1A shown in FIGS. 5A to 5E and an absorbent main body 14A. It is the purpose.

  The “exterior body” referred to in the present invention is an interlayer of non-woven sheets laminated like the exterior body 16A shown in FIGS. 5A to 5E (in the illustrated example, the interlayer between the inner sheet 15A and the outer sheet 17A, the inner sheet 15B, It refers to a member that is made of an elastic sheet in which Tammy elastic materials 44A, 44B, 40A are fixed in an expanded state between the outer sheets 17B and encloses the waist circumference (including the abdominal circumference) of the wearer.

  Further, the “tammy stretchable material” refers to a stretchable material that is disposed in a portion of the exterior body that encloses the circumference of the wearer's stomach. Since the manufacturing method of the present invention relates to the arrangement / fixation of the tammy stretchable material, the absorbent article in which the exterior body includes at least the tammy stretchable material is applied. However, like the exterior body 16A shown in FIGS. 5A to 5E, in addition to the Tammy stretchable materials 44A, 44B, and 40A, the stretchable materials other than the Tammy stretchable materials such as the waist stretchable materials 42A and 42B arranged around the waist opening 10A. It is applicable also to manufacture of an absorbent article provided with material.

  The “stretched state” refers to a state where the stretchable material is stretched to a length of 120% or more with respect to the length of the non-stretched state (that is, a state where the stretch rate is 120% or more). The production method of the present invention can be suitably used for the production of an absorbent article in which the tammy stretchable material is fixed at an elongation of 200 to 500%, preferably 250 to 400%.

  “Envelop around the waist” means that the exterior body forms a cylindrical structure surrounding the waist of the wearer or can form the cylindrical structure. For example, a part (abdominal exterior body 28) enveloping the wearer's stomach side and a part (back exterior body 30) encapsulating the back side like the exterior body 16A shown in FIGS. 5A to 5C are made of an adhesive. It is joined by bonding, heat fusion (heat sealing), ultrasonic fusion or the like to form a cylindrical structure (joint portions 8A and 8B), and one waist opening portion 10A and a pair of leg opening portions 12A and 12B are formed. The thing which has shown the underpants type can be mentioned (so-called underpants type disposable diaper). Moreover, the part which envelops the wearer's abdomen side of the exterior body and the part which encapsulates the back side are formed so as to be joinable by a fastener (mechanical fastener or the like), and may be the pants type. .

  Note that “envelop around the waist” means to encapsulate at least the waist of the wearer like the exterior body 16A (abdominal exterior body 28, back exterior body 30) shown in FIGS. 5A to 5E. It's enough. However, in addition to the waist circumference of the wearer, portions other than the circumference of the wearer's waist may be encapsulated. For example, the absorbent article 1B shown in FIG. 6 includes an exterior body 16B having an integral structure that encloses the waist and crotch of the wearer. The manufacturing method of the present invention can manufacture either the absorbent article 1A shown in FIGS. 5A to 5E or the absorbent article 1B shown in FIG.

  The absorbent main body 14A is an absorbent pad in which the absorber 22A is included, and is a member that encapsulates the wearer's crotch.

  “Absorption pad” refers to a pad-shaped member in which an absorbent body, a liquid-permeable top sheet, and a liquid-impermeable back sheet are integrally formed. For example, a top sheet 18A is disposed on the surface of the absorbent body 22A as shown in FIGS. 5D and 5E, and a back sheet 20A is disposed on the back surface of the absorbent body 22A. The top sheet 18A and the back sheet 20A are bonded to each other at the peripheral edge of the absorbent body 22A. Thus, a structure in which the absorber 22A is included between the top sheet 18A and the back sheet 20A can be exemplified.

[2] Characteristic configuration of the production method of the present invention:
Hereinafter, the manufacturing method of the present invention will be described step by step with reference to FIGS. 1, 2A to 2H, FIGS. 3A to 3B, and FIG. These drawings show the manufacturing method of the absorbent article 1A shown in FIGS. 5A to 5E. FIG. 1 is a process diagram schematically showing the production method of the present invention. 2A to 2H are schematic plan views schematically showing each step of the manufacturing method shown in FIG. 3A to 3B are schematic plan views schematically showing each step of the manufacturing method different from the manufacturing method shown in FIG. 4 is a schematic side view schematically showing a manufacturing apparatus for carrying out the manufacturing method shown in FIGS. 3A and 3B.

  As shown in FIG. 1, the manufacturing method of the present invention includes the adhesive attaching process P1, the elastic material arranging process P2, the elastic material fixing process P3, the elastic material cutting process P4, and the sheet joining process P5 as essential processes.

[2-1] Material:
In the manufacturing method of the present invention, as shown in FIG. 1, at least the first nonwoven fabric sheets 60A and 60B, the second nonwoven fabric sheets 62A and 62B, and the original Tammy stretch materials 64A, 64B and 74A are used as materials. These are all constituent materials of the exterior body. In the production method of the present invention, in order to enable continuous production, it is preferable to use a long nonwoven fabric sheet as the first nonwoven fabric sheet and the second nonwoven fabric sheet and a long stretch material as the original Tammy stretch material.

[2-1A] First nonwoven fabric sheet, second nonwoven fabric sheet:
A 1st nonwoven fabric sheet and a 2nd nonwoven fabric sheet are the constituent materials of the expansion-contraction sheet | seat part of an exterior body. As shown in FIGS. 5A to 5E, the exterior body 16A includes a tammy stretchable material 44A (44B, 40A) between the nonwoven fabric sheets (in the illustrated example, the inner sheet 15A (15B) and the outer sheet 17A (17B)). The elastic material to be fixed is fixed. Therefore, at least the first nonwoven fabric sheet and the second nonwoven fabric sheet are prepared so that a laminate of nonwoven fabric sheets can be formed also in the production method of the present invention.

  However, the 1st nonwoven fabric sheet and the 2nd nonwoven fabric sheet do not necessarily need to be constituted by one nonwoven fabric sheet. For example, each may be composed of a multilayer nonwoven fabric sheet or a nonwoven fabric sheet in which two or more sheets are joined together.

  The first nonwoven fabric sheet and the second nonwoven fabric sheet are concepts corresponding to the nonwoven fabric layer for fixing the original Tammy stretch material, and the first nonwoven fabric sheet and the second nonwoven fabric sheet need to be constituted by separate nonwoven fabric sheets. There is no. In the production method of the present invention, for example, a method may be employed in which a part of an integral nonwoven fabric sheet is folded to form a laminated structure, and an original tammy stretchable material is fixed between the layers. When such a method is adopted, one of the folded portion and the folded portion of the integral nonwoven fabric sheet is the first nonwoven fabric sheet, and the other is the second nonwoven fabric sheet.

  The material of the first nonwoven fabric sheet or the second nonwoven fabric sheet is not particularly limited as long as it is a sheet material made of nonwoven fabric. However, it is preferable to use a non-woven sheet made of a material excellent in air permeability, for example, polyethylene, polypropylene, polyester, or other synthetic fibers, in order to prevent the moisture inside the absorbent article.

The basis weight of the first nonwoven fabric sheet or the second nonwoven fabric sheet is not particularly limited. However, it is preferable to use a thing of 10-50 g / m < ² >. When it is 10 g / m ² or more, sufficient sheet strength can be secured, and it is difficult to cause problems such as tearing of the outer package when the absorbent article is pulled up. On the other hand, if it is 50 g / m ² or less, the flexibility of the sheet can be secured, and it is difficult to cause problems such as the exterior body becoming stiff and the wearing feeling of the absorbent article being lowered. In order to obtain these effects more reliably, it is more preferable to use those having a basis weight of 15 to 25 g / m ² .

[2-1B] Original Tammy stretch material:
The original Tammy stretch material is a material of Tammy stretch material. As long as it is an elastic material, the material is not particularly limited. For example, natural rubber or synthetic rubber can be used. Among them, it is preferable to use a rubber containing natural rubber as a main component (natural rubber 50% by mass or more). Rubbers mainly composed of natural rubber are rich in flexibility and stretchability, and it is possible to produce absorbent articles that have conflicting characteristics such as fit and softness.

  More specifically, it is preferable to use an elastic material made of rubber having a tensile stress of 10 to 40 gf at the time of 300% extension in the second reciprocating path when repeated expansion and contraction between 100% and 500% is performed. . By using a rubber having a tensile stress of 10 gf or more, it is possible to provide an absorbent article that does not overtighten the body of a thick body wearer and is difficult to slip from the body of a thin body wearer. it can. On the other hand, by using the rubber having a tensile stress of 40 gf or less, the elastic material cut in the elastic material cutting step is greatly contracted (snapback). Therefore, it becomes difficult for the stretchable material to remain in the part around the belly that is particularly noticeable among the absorbent articles, and the appearance of the product can be improved. In order to exhibit the effect more reliably, it is more preferable to use rubber having a tensile stress of 12 to 35 gf.

  In addition, when the stretching rate is repeatedly stretched between 100% and 500%, the tensile stress at 300% stretching in the second round trip is 75-100 when compared to the tensile stress at 300% stretching in the second round trip. It is also preferable to use rubber showing a value of%. By using a rubber having a value of 75% or more, a high tensile stress is maintained even in the second reciprocating expansion and contraction, so that the absorbent article does not stretch even when worn and exhibits an appropriate tightening force. Can be obtained. In order to exhibit the effect more reliably, it is more preferable to use rubber having the value of 85 to 100%.

  Here, the term “tensile stress” means a tensile stress at 300% elongation measured when a stretchable material is repeatedly stretched between 100% and 500% using a Tensilon tensile tester. It shall be. Assuming an average elongation rate in use, tensile stress at 300% elongation was used as an index. In addition, since the stretchable material is arranged in the stretched state when the diaper is manufactured, if this is considered as “first stretch”, when the diaper is put on the wearer, the “second stretch” is performed. Therefore, the tensile stress at the second round-trip was used as an index.

  There is no particular limitation on the form of the original Tammy stretch material. For example, thread rubber, flat rubber, and the like can be used, and it is preferable to use flat rubber. Unlike twisted yarns such as thread rubber, flat rubber extends as long as a part of the stretched elastic material has a cut, so that the cut extends and the elastic material can be cut easily and reliably. There is an advantage that it does not easily occur.

  Examples of the rubber that satisfies the conditions described above include “Silver Queen” (trade name) manufactured by Asahi Tech.

[2-2] Adhesive adhesion step:
As shown in FIG. 1 and FIG. 2B, the manufacturing method of the present invention becomes the material of the first nonwoven fabric sheets 60A and 60B and the second nonwoven fabric sheets 62A and 62B and the tammy stretchable material which are constituent materials of the stretchable sheet portion of the exterior body. There is provided an adhesive attaching step P1 in which an adhesive is attached to at least one member of the original Tammy stretchable materials 64A, 64B, 74A to form adhesive attaching portions 66A, 66B.

[2-2A] Adhesive adhesion part:
FIG. 2A shows the state of the first nonwoven fabric sheets 60A and 60B before the adhesive is applied. The portion defined by the one-dot chain line shown in the center of FIG. 2A or the center of FIG. 2B is an absorbent main body arranging portion 68A where the absorbent main body is arranged later. As shown in FIG.1 and FIG.2A, 1st nonwoven fabric sheet 60A, 60B is arrange | positioned so that it may parallel, and it sends out toward these longitudinal directions.

  In the adhesive attaching step P1 shown in FIGS. 1 and 2B, (1) in the first nonwoven fabric sheets 60A and 60B, the portions corresponding to the left and right side edges of the exterior body and the original Tammy stretch materials 64A, 64B and 74A Adhesives are attached to the portions to be disposed to form adhesive attaching portions 66A and 66B.

  However, (2) In the second nonwoven fabric sheet, the portion corresponding to the left and right side edges of the exterior body and the portion where the original tammy stretchable material is disposed, (3) The left and right sides of the exterior body in the original tammy stretchable material A form in which an adhesive is attached to at least one of the portions arranged in the portion corresponding to the edge to form the adhesive attached portion is also included in the manufacturing method of the present invention. Even if any form of (1) to (3) is adopted, the original tammy stretchable materials 64A, 64B, and 74A are fixed to portions corresponding to the left and right side edge portions of the exterior body in the first nonwoven fabric sheets 60A and 60B. can do.

  “Parts corresponding to the left and right side edge portions of the exterior body” means a portion of the first nonwoven fabric sheets 60A and 60B (or the second nonwoven fabric sheets 62A and 62B) that occupies the left and right side edge portions of the exterior body later. More specifically, on the basis of the product width of the exterior body, each of the left and right 30 to 37.5% widths excluding the central part 25 to 40% wide part (preferably 30 to 35% wide part) It refers to a portion (preferably a portion having a width of 32.5 to 35%). By fixing the stretched original Tammy stretch material to this part, the fit of the wearer around the waist can be improved when it is made into a product, and the effect of shrinkage of the Tammy stretch material acts on the absorber It is hard to do.

  The “part where the original tammy stretchable material is placed” refers to the portion where the original tammy stretchable material will be placed in the next stretchable material placement step, and a plurality of original tammy stretchable materials are placed in parallel. In this case, it indicates the entire portion sandwiched between the two original tammy stretchable materials arranged on the outermost side.

  The first nonwoven fabric sheets 60A and 60B and the second nonwoven fabric sheets 62A and 62B are attached by attaching an adhesive to any one of the above (1) to (3) to form adhesive adhesion portions 66A and 66B. The original Tammy stretchable materials 64A, 64B, and 74A can be fixed between the layers.

  In the production method of the present invention, an adhesive may be attached to two or all of the parts (1) to (3). In the case where the adhesive is attached to any one of the parts (1) to (3), it is not necessary to attach the adhesive to these parts without any gaps. Also good.

  In addition, when manufacturing an absorbent article provided with elastic materials (for example, waist elastic materials 42A, 42B, etc.) other than the Tammy elastic materials 44A, 44B, 40A such as the absorbent article 1A shown in FIGS. 5A to 5E. In this step, the adhesive adhering portions 66C and 66D can be formed in the portions where the original waist elastic materials 72A and 72B, which are the raw materials of these elastic materials, are arranged.

  The kind of adhesive agent is not specifically limited, What is necessary is just to use the adhesive agent conventionally used for manufacture of absorbent articles including a disposable diaper. For example, an adhesive having high fluidity such as a hot melt adhesive can be preferably used.

  The method for attaching the adhesive is not particularly limited. For example, a) a method of continuously applying a hot melt adhesive to the first nonwoven fabric sheet and / or the second nonwoven fabric sheet, b) a method of directly applying or spraying the hot melt adhesive to the raw Tammy stretch material, c) The original tammy stretchable material is placed in an expanded state on the first nonwoven fabric sheet or the second nonwoven fabric sheet, and the hot melt adhesive is sprayed in that state, and the first nonwoven fabric sheet or the second nonwoven fabric sheet and the original tammy stretchable material. It can be performed by a method of attaching a hot melt adhesive to both of the materials.

  The method of a) is performed by a method such as slit coater (sim coater), curtain spray, spiral spray, omega coat, etc., and the method of b) is performed by a method such as comb gun, omega coat, or wrap coat, and the method of c). Can be carried out by a technique such as omega coat or Sure Wrap. The omega coat can be carried out by using an omega nozzle head (ITW Dynatec) or the like, and the wrapping can be carried out by using a wrap nozzle (manufactured by Nordson).

[2-2B] Adhesive non-adhered part:
In the adhesive attaching step P1 shown in FIGS. 1 and 2B, when forming the adhesive attaching portions 66A and 66B, (4) a portion corresponding to the widthwise center portion of the exterior body in the first nonwoven fabric sheets 60A and 60B. Moreover, the adhesive non-adhering portions 70A and 70B are not attached to the portions where the original Tammy stretchable materials 64A, 64B and 74A are disposed. Similarly, (5) the second nonwoven fabric sheet 62A, 62B, the portion corresponding to the central portion in the width direction of the exterior body and the portion where the original tammy stretchable materials 64A, 64B, 74A are disposed, and (6) the original tammy stretchable In the materials 64A, 64B, and 74A, the portion disposed in the portion corresponding to the central portion in the width direction of the exterior body is not attached to the adhesive but is set as the non-adhesive portion.

  By not attaching the adhesive to any part of the above (4) to (6), the adhesive non-adhering portions 70A, 70B of the first nonwoven fabric sheets 60A, 60B and the adhesive non-adhesive of the second nonwoven fabric sheets 62A, 62B The original Tammy elastic materials 64A, 64B, and 74A are not fixed to the attached portion. Therefore, if the original Tammy stretchable materials 64A, 64B, 74A are cut at the portions (4) to (6), the contraction force based on the original Tammy stretchable materials 64A, 64B, 74A does not act on the portions.

  "The part corresponding to the width direction center part of an exterior body" refers to the part which occupies the width direction center part of an exterior body later among 1st nonwoven fabric sheets 60A and 60B (or 2nd nonwoven fabric sheet 62A, 62B), More specifically, it refers to a portion having a width of 25 to 40% (preferably a portion having a width of 30 to 35%) of the central portion, based on the product width of the exterior body. That is, this is a portion excluding “portions corresponding to the left and right side edge portions of the exterior body” that form the adhesive attaching portions 66A and 66B.

  In addition, although the absorbent article 1A shown to FIG. 5A-FIG. 5E is equipped with waist elastic materials 42A and 42B around waist opening part 10A, as shown to FIG.1 and FIG.2B, arrangement | positioning of the original waist elastic materials 72A and 72B It is preferable not to form an adhesive non-adhered portion at the site. As shown in FIGS. 5A to 5E, the waist elastic members 42A and 42B are often arranged at positions that do not pass through the absorbent main body arrangement portion 68A, and the contraction force hardly acts on the absorbent body. This is because it is necessary to improve the fit from the part and the effect of preventing leakage.

[2-3] Stretching material placement step:
As shown in FIGS. 1 and 2C, in the stretchable material arranging step P2, the original tammy stretchable materials 64A, 64B, and 74A are stretched on the surface of one of the first nonwoven fabric sheets 60A and 60B and the second nonwoven fabric sheets 62A and 62B. It is a process of arranging continuously.

  “Any surface” refers to the surface of the first nonwoven fabric sheet 60A, 60B and the surface of the second nonwoven fabric sheet 62A, 62B facing the other sheet.

  The “stretched state” refers to a state where the stretchable material has a stretch rate of 120% or more. “Elongation rate” means the ratio (percentage) of the length of the stretched material to the length of the stretched material in the non-stretched state, and indicates the degree of stretch of the stretchable material. In the production method of the present invention, the original tammy stretchable material is preferably fixed in an stretched state with an stretch rate of 200 to 500%.

  By setting the stretch rate to 200% or more, it becomes possible to make a large snapback when the original tammy stretchable material is cut, and it is effectively prevented that the appearance of the product is damaged by the cut original tammy stretchable material. In such a configuration, when a design such as a character is attached to an abdomen part such as a back sheet that constitutes the absorbent main body, the visibility of the design is hardly hindered by the cut elastic material, and the appearance of the product is reduced. It is preferable at the point which can be made favorable.

  Further, by setting the stretch rate to 500% or less, it becomes easy to stretch the original Tammy stretchable material, and it is easy to put on a diaper. Further, it is possible to avoid an excessive tightening force from acting on the wearer, and to effectively prevent a problem that a feeling of tightness is given at the time of wearing or a rubber mark is attached to the skin. In order to obtain these effects more reliably, it is more preferable to set the stretch ratio to 250 to 400%.

  In addition, when manufacturing an absorbent article provided with elastic materials (for example, waist elastic materials 42A, 42B, etc.) other than the Tammy elastic materials 44A, 44B, 40A such as the absorbent article 1A shown in FIGS. 5A to 5E. In this step, the original waist elastic materials 72A and 72B, which are the raw materials of these elastic materials, can also be disposed.

[2-4] Elastic material fixing step:
As shown in FIGS. 1 and 2D, the elastic material fixing step P3 is performed by bonding the first nonwoven fabric sheets 60A and 60B and the second nonwoven fabric sheets 62A and 62B via the adhesive attaching portions 66A and 66B. This is a step of fixing the original tammy stretchable materials 64A, 64B, 74A in an expanded state between the sheets 60A, 60B and the second nonwoven fabric sheets 62A, 62B.

  The bonding method is not particularly limited as long as the elastic materials such as the original tammy elastic materials 64A, 64B, and 74A are disposed between the first nonwoven fabric sheets 60A and 60B and the second nonwoven fabric sheets 62A and 62B. As shown in FIGS. 1 and 2D, the first nonwoven fabric sheet 60A wider than the second nonwoven fabric sheet 62A (the first nonwoven fabric sheet 60B wider than the second nonwoven fabric sheet 62B) is used, and only one side edge of both sheets is matched. Alternatively, the first nonwoven fabric sheets 60A and 60B may be bonded so that one side edge E1 and E3 side protrudes from the side edges E2 and E4 of the second nonwoven fabric sheets 62A and 62B.

  As shown in FIGS. 1 and 2H, the protruding portions of the first nonwoven fabric sheets 60A and 60B are folded back and bonded to the second nonwoven fabric sheets 62A and 62B. Thereby, the touch of the inner surface side of an exterior body and the waist opening part vicinity can be made favorable, and the external appearance (appearance) of these parts can be improved. Moreover, when it comprises so that the edge part of an absorptive main body may be coat | covered with a folding | turning part, the effect of making it difficult to raise | generate the position shift of an absorptive main body can be acquired.

[2-5] Stretch material cutting step:
As shown in FIG.1 and FIG.2E, the manufacturing method of this invention is the adhesive non-adhesion part 70A, 70B and the 2nd nonwoven fabric sheet 62A of 1st nonwoven fabric sheet 60A, 60B in original Tammy elastic material 64A, 64B, 74A. , 62B is provided with a stretchable material cutting step P4 for cutting a portion arranged between the non-adhesive portions of the adhesive (cutting marks 76A to 76C).

  The cutting form of the elastic material is not particularly limited. For example, a first nonwoven fabric sheet in which an original tammy stretchable material is disposed and fixed between layers between a first roll having a plurality of cutting protrusions and a second roll disposed so as to face the first roll, 2 The stretchable material can be cut by a method of sandwiching and pressing the nonwoven fabric sheet.

  The shape of the cutting protrusion is not particularly limited, and various shapes such as a rectangular shape, a dot shape, a circular shape, and a lattice shape can be employed. Especially, the plate-shaped cutting protrusion (cutting blade) with the high effect which cut | disconnects an elastic material can be used suitably.

  The overall shape of the first roll is not particularly limited, but usually a cylindrical shape, for example, a shape similar to a conventionally known emboss roll is used. Although the material is not particularly limited, a metal material can be preferably used. Further, the first roll may be provided with a heater for cutting the stretchable material by applying heat as well as pressure, and a thermocouple for measuring the temperature of the roll.

  Specific examples of the second roll include an embossing roll and a plain roll in which a recess that can be fitted with the cutting protrusion attached to the first roll is formed.

  In the manufacturing method of the present invention, as shown in FIG. 1 and FIG. 2E, when viewed in the product width unit of the absorbent article, one point in the longitudinal direction of each of the original Tammy stretch materials 64A, 64B, 74A can be cut. Preferred (cut marks 76A to 76C). That is, only one part is cut | disconnected about one original tammy elastic material 64A, 64B, 74A. By doing so, a large number of cut pieces of the original Tammy stretchable materials 64A, 64B, 74A are not formed, and it is possible to prevent the appearance of the product due to the cutting of the original Tammy stretchable materials 64A, 64B, 74A. Become.

[2-6] Sheet joining step:
In the manufacturing method of the present invention, as shown in FIGS. 1 and 2F, the non-adhesive portions 70A and 70B of the first non-woven fabric sheets 60A and 60B and the non-adhesive portions of the second non-woven fabric sheets 62A and 62B are joined. A sheet joining step P5 is provided (joining portions 78A and 78B).

  Thereby, the adhesive non-adhering portions 70A and 70B of the first non-woven fabric sheets 60A and 60B and the adhesive non-adhering portions of the second non-woven fabric sheets 62A and 62B are not separated. Further, the non-adhesive portion of each nonwoven fabric sheet does not float. Moreover, in the manufacturing method of this invention, since the elastic material cutting process P4 and the sheet | seat joining process P5 are implemented as a different process, regardless of the arrangement | positioning site | part of a tammy elastic material, the junction part of nonwoven fabric sheets is desired. It can be formed in the position.

  The bonding method is not particularly limited, and examples thereof include heat fusion (heat sealing) and ultrasonic fusion. The shape of the joint is not particularly limited, and can be any shape. In the sheet joining process P5 shown in FIG. 1 and FIG. 2F, joining portions 78A and 78B that form a T-shape in triplicate are formed. Such a joint shape does not impair the flexibility of the first nonwoven sheet 60A (60B) and the second nonwoven sheet 62A (62B), and the first nonwoven sheet 60A (60B) and the second nonwoven sheet 62A (62B) There is an effect that can be joined.

  The manufacturing method of this invention should just be provided with each said process, and there is no restriction | limiting in particular about the order of a process. However, it is preferable to perform the elastic material cutting process P4 and then the sheet bonding process P5 after performing the adhesive attaching process P1, the elastic material arranging process P2, and the elastic material fixing process P3 as shown in FIG. Since the sheet joining is performed after the stretchable material is cut in advance, there is no need to form a joining portion by avoiding the arrangement position of the stretchable material, and there is an advantage that the sheet joining is easy.

  On the other hand, after performing an adhesive agent adhesion process, an elastic material arrangement | positioning process, and an elastic material fixing process, the method of performing a sheet joining process and then performing an elastic material cutting process is also preferable.

  In this case, as shown in FIG. 3A, the sheet joining step P5 is a portion other than the portion where the original tammy stretchable materials 64A, 64B, 74A are disposed in the adhesive non-adhering portions 70A, 70B of the first nonwoven fabric sheets 60A, 60B. It is preferable that the portion and the portion other than the portion where the original tammy stretchable materials 64A, 64B, 74A are arranged in the adhesive non-adhered portion of the second nonwoven fabric sheets 62A, 62B are joined.

  When the sheet joining step is performed first, since the original tammy stretchable material is continuously arranged, it is necessary to accurately join the gap portions of the plurality of continuously placed original tammy stretchable materials. Therefore, as shown in FIG. 4, the original elastic sheet 80 obtained by the elastic material fixing step, in which the original tammy elastic material is fixed in an extended state between the first nonwoven fabric sheet and the second nonwoven fabric sheet, is attached to the periphery of the drum 82. The sheet joining step P5 was performed by pressing a fusion roll 84 having a plurality of fusion protrusions on the peripheral surface against the original stretchable sheet 80 that traveled along the surface and traveled on the peripheral surface of the drum 82. Thereafter, it is preferable to perform the elastic material cutting step P4 by pressing a cutting roll 86 having a plurality of cutting protrusions on the peripheral surface against the original elastic sheet 80 traveling on the peripheral surface of the drum 82.

  By performing the sheet joining process P5 and the elastic material cutting process P4 on the same drum 82, the original expansion and contraction is performed as compared with the case where the sheet joining process P5 and the elastic material cutting process P4 are performed on different drums or rolls. The positional deviation of the sheet 80 can be prevented, and the original Tammy stretchable material can be accurately cut. As shown in FIG. 4, the original elastic sheet 80 can be caused to run along the peripheral surface of the drum 82 by pressing the original elastic sheet 80 onto the drum 82 with the guide roll 88.

[3] Other steps of the production method of the present invention:
The production method of the present invention is not particularly limited with respect to the other steps as long as it includes the adhesive adhesion step, the stretchable material placement step, the stretchable material fixing step, the stretchable material cutting step, and the sheet joining step that have already been described. It can be produced according to the method. An example of the manufacturing method shown in FIG. 1 will be described.

[3-1] Absorbent body arrangement / fixing step:
After performing the sheet joining step P5 shown in FIG. 1 and FIG. 2F, as shown in FIG. 1, FIG. 2G and FIG. 2H, the first nonwoven fabric sheet 60A, the original Tammy stretch materials 64A and 74A and the second nonwoven fabric sheet 62B Absorbency of intermittently fixing the absorbent main body 14A so that the laminate and the laminate of the first nonwoven fabric sheet 60B, the original tammy stretchable material 64B and the second nonwoven fabric sheet 62B are sent out adjacent to each other. Perform the body placement and fixing process. The absorbent main body 14A can be fixed with an adhesive such as a hot melt adhesive.

  As shown in FIGS. 5D and 5E, the absorbent main body 14A has an absorbent body 22A wrapped in a hydrophilic sheet (upper tissue 54A, lower tissue 56A) on the upper surface of the back sheet 20A, and further The top sheet 18A is disposed on the upper surface, and the periphery of the absorber 22A can be sealed by being sandwiched between the top sheet 18A and the back sheet 20A. The absorbent main body 14A shown in FIGS. 5D and 5E separately forms a pair of three-dimensional gathers 26A and 26B by laminating a water-repellent sheet 32A. These processes can be manufactured by a continuous manufacturing process by using a long sheet material as a constituent material of each member.

[3-1A] Absorber:
Examples of the absorber include fluff pulp, a super absorbent polymer (hereinafter referred to as “SAP”), a hydrophilic sheet, and the like. As the fluff pulp, wood pulp or non-wood pulp defibrated in a cotton-like form, the SAP as sodium polyacrylate, the hydrophilic sheet as tissue, absorbent paper, a non-woven fabric subjected to a hydrophilic treatment, etc. Is preferably used. The absorbent article 1A shown in FIGS. 5A to 5E encloses the entire absorbent body 22A with an upper tissue 54A and a lower tissue 56A that are hydrophilic sheets.

  What is necessary is just to use what was shape | molded in desired shapes, such as rectangular shape and an hourglass shape, according to the objective. The absorbent article 1A shown in FIGS. 5A to 5E is an example using a rectangular absorbent body 22A.

[3-1B] Top sheet:
Since the top sheet needs to allow the wearer's urine or the like to permeate, at least a part (all or a part) of the top sheet is made of a liquid-permeable material. Examples of the liquid permeable material include woven fabric, nonwoven fabric, and porous film. Among these, it is preferable to use a nonwoven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, aliphatic polyamide, etc., which has been subjected to a hydrophilic treatment.

  As said nonwoven fabric, the nonwoven fabric manufactured by manufacturing methods, such as air through (card hot air) and card | curd embossing, can be used conveniently. The hydrophilic treatment can be performed by applying, spraying, impregnating, etc., a surfactant to the raw cotton of the nonwoven fabric.

  The top sheet is “at least partially” made of a liquid-permeable material. Although the position is not particularly limited, it is preferable that the portion overlapping the arrangement position of the absorber in the crotch portion is made of a liquid-permeable material when viewed in plan.

[3-1C] Backsheet:
The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the absorbent article.

  Examples of the liquid impermeable material include a liquid impermeable film made of a resin such as polyethylene. Among these, it is preferable to use a microporous polyethylene film. This microporous polyethylene film is a film in which a large number of fine pores of 0.1 to several μm are formed, and is liquid-impermeable but has moisture permeability. Therefore, it is possible to prevent stuffiness inside the absorbent article while ensuring leakage resistance.

  In the absorbent article 1A shown in FIGS. 5A to 5E, the crotch portion of the absorbent main body 14A is not encapsulated by the abdominal exterior body 28 or the back exterior body 30, and is exposed to the outside. About the absorbent article of such a form, as shown to FIG. 5A-FIG. 5E, it is preferable to set it as the form which bonds 24 A of cover sheets to the outer surface side of the back sheet 20A of 14 A of absorbent main bodies. This cover sheet is used to reinforce the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

  In the example shown in FIGS. 5A to 5E, the cover sheet 24A is bonded to the entire outer surface of the back sheet 20A. However, the cover sheet 24 </ b> A may be bonded only to a portion of the outer surface of the back sheet 20 </ b> A that is not encapsulated by the abdominal exterior body 28 and the back exterior body 30 and is exposed to the outside. Such a structure can reduce the sheet | seat interposed between 20 A of back seat | sheets, the abdominal exterior body 28, and the back exterior body 30. FIG. Therefore, when a design or the like is attached to the backsheet 20A, it is easy to visually recognize the design or the like through the abdominal exterior body 28 and the back exterior body 30, which is preferable in terms of improving design.

[3-1D] Solid gather:
The absorbent article shown in FIGS. 5A to 5E includes a water-repellent sheet 32A and includes a pair of left and right three-dimensional gathers 26A and 26B disposed on both sides of the absorbent body 22A.

  A three-dimensional gather can be comprised according to the conventional absorbent article. For example, as shown in FIGS. 5A to 5E, a water-repellent sheet 32A for forming the three-dimensional gathers 26A and 26B is separately attached to the absorbent main body 14A, and the three-dimensional gathers 26A and 26B are formed integrally with the absorbent main body 14A. That's fine.

  In this case, the stretched three-dimensional gather elastic members 36A and 36B may be sandwiched and fixed between the layers of the water repellent sheet 32A. As the water-repellent sheet, it is preferable to use a non-woven sheet obtained by a method such as card embossing or spunbond, particularly a non-woven sheet such as SMS or SMMS having high waterproofness.

  In addition, in the absorbent article 1A shown in FIGS. 5A to 5E, side edge elastic members 38A and 38B are disposed on both side edges of the three-dimensional gather elastic materials 36A and 36B in addition to the three-dimensional gather elastic materials 36A and 36B. When the side edge elastic members 38A and 38B are arranged in this way, the Tammy elastic materials 44A and 40A and the side edge elastic materials 38A and 38B are integrally fitted to the wearer's legs, so that the fit is improved. There is an advantage.

  Examples of the three-dimensional gathers include inward gathers, outward fall gathers, C-fold gathers and Z-fold gathers in which bent portions and folded portions are formed in a part of the height direction. Among these, inward gathers such as the three-dimensional gathers 26A and 26B shown in FIGS. 5B and 5D are preferable in terms of high leakage prevention.

[3-1E] Folding of the first nonwoven sheet:
As shown in FIGS. 1 and 2H, portions of the first nonwoven fabric sheets 60A and 60B that protrude from the end portions of the second nonwoven fabric sheets 62A and 62B are folded back and bonded to the second nonwoven fabric sheets 62A and 62B. This bonding can be performed with an adhesive such as a hot melt adhesive.

[3-2] Folding / joining process:
After performing the absorbent main body arranging step P6 shown in FIG. 1, FIG. 2G and FIG. 2H, as shown in FIG. 1, lamination of the first nonwoven fabric sheet 60A, the original Tammy stretch materials 64A, 74A and the second nonwoven fabric sheet 62A After the body is folded so that the first nonwoven fabric sheet 60A, the original tammy stretch material 64B, and the second nonwoven fabric sheet 62B overlap each other (the upper edge of the drawing and the lower edge of the drawing overlap) The absorbent article is formed by joining the gaps of the absorbent main body 14A intermittently disposed and fixed in a line shape by heat sealing, and forming the joints 8A and 8B in portions corresponding to the side edges of the absorbent article. A folding / joining step P7 for forming a continuous body is performed.

[3-3] Cutting step:
Finally, as shown in FIG. 1, a plurality of absorbent articles 1 </ b> A are obtained by performing a cutting process P <b> 8 in which the continuous absorbent article is cut at a portion between two pairs of line-like joints 8 </ b> A and 8 </ b> B. be able to.

  The production method of the present invention can be suitably used for the production of absorbent articles (more specifically, disposable diapers) for infants or adults such as the elderly and persons with disabilities who need care.

1A, 1B: Absorbent article, 8A, 8B: Joint part, 10A, 10B: Waist opening, 12A, 12B, 12C, 12D: Leg opening, 14A, 14B: Absorbent body, 16A, 16B: Exterior body, 18A: Top sheet, 20A: Back sheet, 22A, 22B: Absorber, 24A: Cover sheet, 26A, 26B: Solid gather, 28: Abdominal exterior body, 30: Back exterior body, 32A: Water repellent sheet, 36A, 36B : Three-dimensional gather elastic material, 40B, 40C: Leg elastic material, 42A, 42B, 42C, 42D: Waist elastic material, 44A, 44B, 40A: Tammy elastic material, 54A: Upper tissue, 56A: Lower tissue, 60A, 60B: 1st nonwoven fabric sheet, 62A, 62B: 2nd nonwoven fabric sheet, 64A, 64B, 74A: Original tammy elastic material, 66A, 66B, 6 C, 66D: Adhesive adhesion part, 68A: Absorbent main body arrangement part, 70A, 70B: Adhesive non-adhesion part, 72A: Original waist stretchable material, 76A, 76B: Cut mark, 78A, 78B: Joint part, 80: Original elastic sheet, 82: drum, 84: fusing roll, 86: cutting roll, 88: guide roll, P1: adhesive attaching process, P2: elastic material placing process, P3: elastic material fixing process, P4: elastic material cutting Process, P5: Sheet joining process, P6: Absorbent main body arranging process, P7: Joining process, P8: Cutting process.

Claims (2)

It consists of an elastic sheet in which a Tammy elastic material is fixed in an extended state between the layers of the laminated non-woven sheets, and is an exterior body that encloses the wearer's waist and an absorbent pad that contains the absorbent body. A method of manufacturing an absorbent article comprising an absorbent main body encapsulating an inseam,
Preparing a first nonwoven fabric sheet and a second nonwoven fabric sheet as materials for the elastic sheet, and an original tammy elastic material as a material for the tammy elastic material,
In the first nonwoven fabric sheet and the second nonwoven fabric sheet, the portion corresponding to the central portion in the width direction of the exterior body and the portion where the original tammy stretchable material is disposed, and the exterior body in the original tammy stretchable material While not adhering adhesive to any part of the part arranged in the part corresponding to the central part in the width direction, it is an adhesive non-adhering part,
In the first nonwoven fabric sheet, on the left and right side edges of the exterior body in the second nonwoven fabric sheet, the portion corresponding to the left and right side edges of the exterior body and the portion on which the original tammy stretchable material is disposed. Adhering to at least one of a portion corresponding to the portion where the original tammy stretchable material is disposed and a portion disposed in the portion corresponding to the left and right side edges of the exterior body in the original tammy stretchable material An adhesive attaching step of forming an adhesive attaching portion by attaching an agent;
A stretchable material placement step of continuously placing the original Tammy stretchable material in a stretched state on the surface of either the first nonwoven fabric sheet or the second nonwoven fabric sheet;
By fixing the first nonwoven fabric sheet and the second nonwoven fabric sheet through the adhesive adhering portion, the original tammy stretchable material is fixed in an expanded state between the first nonwoven fabric sheet and the second nonwoven fabric sheet. Stretch material fixing process,
In the original tammy stretchable material, a stretchable material cutting step for cutting a portion disposed between the adhesive non-adhered portion of the first nonwoven fabric sheet and the adhesive non-adhered portion of the second nonwoven fabric sheet;
The adhesive non-adhering part of the first nonwoven fabric sheet and the adhesive non-adhering part of the second nonwoven sheet are the adhesive non-adhering part of the first nonwoven sheet and the adhesive of the second nonwoven sheet. A sheet joining step for joining so that at least a part other than both ends of the non-adhering part is not separated , and
After performing the adhesive attaching step, the stretchable material placement step and the stretchable material fixing step,
It is a method of performing the sheet joining step and then performing the stretchable material cutting step,
The sheet bonding step includes a portion other than a portion where the original tammy stretchable material is disposed in the adhesive non-adhering portion of the first non-woven fabric sheet, and the adhesive non-adhering portion of the second non-woven fabric sheet, The manufacturing method of the absorbent article which joins parts other than the part by which an original tammy elastic material is arrange | positioned . The original elastic sheet obtained by the elastic material fixing step, in which the original Tammy elastic material is fixed in an extended state between the first nonwoven fabric sheet and the second nonwoven fabric sheet, is arranged along the peripheral surface of the drum. Let it run,
After performing the sheet joining step by pressing a fusion roll having a plurality of fusion protrusions on the peripheral surface against the original elastic sheet traveling on the peripheral surface of the drum,
The absorbent article according to claim 1 , wherein the elastic material cutting step is performed by pressing a cutting roll having a plurality of cutting protrusions on the peripheral surface against the original elastic sheet traveling on the peripheral surface of the drum. Manufacturing method.

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