WO2017187778A1

WO2017187778A1 - Method for manufacturing absorbent article

Info

Publication number: WO2017187778A1
Application number: PCT/JP2017/007990
Authority: WO
Inventors: 鈴木　裕一
Original assignee: ユニ・チャーム株式会社
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2017-11-02
Also published as: JPWO2017187778A1; JP6145241B1; CN107708629B; CN107708629A

Abstract

In manufacturing an absorbent article that has extended portions on both sides of a surface sheet, the present invention prevents outer portions of the extended portions from being curled while maintaining functions of the extended portions. This manufacturing method includes: a step of forming a pair of extended portions (225, 225) that extend as free ends outwardly on both sides in a transverse direction of a pair of first adhesive portions (303X, 303X) of a continuous surface sheet (P11) by forming a bonded body by bonding the continuous surface sheet and a pair of continuous side sheets (SSa, SSb) with the pair of first adhesive portions interposed therebetween such that both edge portions of the continuous surface sheet in the transverse direction overlap a pair of inner edges that oppose each other in the transverse direction of the pair of continuous side sheets; a step of bonding an absorber (P3) to the bonded body on a side on which the pair of continuous side sheets are disposed; and a step of forming a compressed portion (218) that extends from the extended portion to the absorber in a region inward of an outer edge in the transverse direction of at least one of the extended portions.

Description

Method for manufacturing absorbent article

The present invention relates to a method for manufacturing an absorbent article.

The absorbent article is worn for a long time while contacting the wearer's crotch while preventing the wearer's excrement from leaking. Therefore, in addition to the characteristic of preventing leakage, the absorbent article is required to have a characteristic that fits the body comfortably and comfortably. As an absorbent article related to such leakage prevention and body compatibility, the absorbent article of Patent Document 1 can be cited. According to Patent Literature 1, in this absorbent article, the top sheet has a pair of folded portions that are folded on both sides in the width direction, and the tip ends of the pair of folded portions are in the thickness direction. The absorber and the back sheet are joined to the back sheet by a pair of joint portions arranged in the width direction. That is, the absorbent article has a pair of folded portions including an absorbent body that extend toward both outer sides in the width direction at positions corresponding to the crotch portions of the wearer. And according to patent document 1, while this absorbent article suppresses the discomfort to a crotch part at the time of use, it is supposed that it can suppress mounting | wearing and can suppress the leakage of a liquid.

Japanese Unexamined Patent Publication No. 2016-221135

When manufacturing the absorbent article of patent document 1, the outer side edge part of the width direction in the folding | turning part is not joined directly to the back sheet. Therefore, in the manufacturing process, it can be considered that the folded portion becomes unstable and moves up and down greatly away from the back sheet while the semi-finished product of the absorbent article is being conveyed. However, the folded portion has a thicker and more stable absorbent body than the top sheet of the folded portion, so that the shape of the folded portion is stable during transportation in the manufacturing process and is separated from the back sheet. Will not move.
However, in the absorbent article described in Patent Document 1, since the folded portion includes the absorbent body, when the absorbent article is disposed in the crotch portion of the wearer, the folded inward in the width direction of the folded portion is shaped. There is a possibility that the effect of suppressing discomfort to the crotch part and suppressing the leakage of liquid may not be sufficiently achieved due to inhibition by the stable absorbent body.

Therefore, the inventor newly newly developed a pair of extensions that extend outwardly as free ends at both end portions in the width direction of the surface sheet in an absorbent article including a surface sheet, a pair of side sheets, and an absorbent body. It was considered that one end portion of each of the pair of side sheets was joined to both end portions in the width direction of the topsheet so as to form a portion. In the absorbent article which has such a structure, an absorber exists in the back sheet side rather than a surface sheet and a pair of side sheet, ie, the extension part does not contain an absorber. Therefore, when the absorbent article is disposed in the crotch portion of the wearer, the deformation of the extending portion toward the inner side in the width direction is not hindered by the absorber, and the adhesion to the wearer's crotch portion is improved. It is possible to improve the leakage prevention property and body compatibility of the absorbent article.
However, in this new configuration, the outer end portion in the width direction of the extending portion is not directly joined to the side sheet. For this reason, in the manufacturing process, it is possible that the outer portion of the extending portion is curled while the semi-finished product of the absorbent article is being conveyed. In that case, the adhesive at the bonding portion is exposed and contacts the member of the manufacturing apparatus, which may cause problems in the semi-finished product and other semi-finished products. In addition, the curled portion is caught by a member of the manufacturing apparatus and dragged by the hooked portion, and the extension portion itself may be peeled off from the back sheet.

An object of the present invention is to maintain the functions of a pair of extending portions when manufacturing an absorbent article having a pair of flap-shaped extending portions that extend to both outer sides in the width direction of the topsheet. On the other hand, a method for manufacturing an absorbent article capable of suppressing the occurrence of problems such as the outer portions of the pair of extending portions being rolled and the adhesive contacting other members or the extending portions themselves peeling off. provide.

The manufacturing method of the absorbent article of the present invention is as follows. (1) Joined to the top sheet, a pair of side sheets joined so that one end thereof overlaps both ends of the top sheet on the non-skin side in the width direction, and the top sheet and the pair of side sheets. A pair of continuous side sheets for the pair of side sheets that extend in the transport direction and are adjacent to each other in the transverse direction, and the surface that extends in the transport direction. A conveying step for conveying the continuous surface sheet for the sheet in the conveying direction, both ends in the transverse direction of the continuous surface sheet, and a pair of inner end portions facing each other in the transverse direction in the pair of continuous side sheets The continuous surface sheet and the pair of continuous side sheets are bonded to each other via a pair of first adhesive portions so as to overlap each other. A sheet joining step of forming a pair of extending portions extending as free ends to both outer sides in the transverse direction from the pair of first adhesive portions in the continuous surface sheet, and the pair of the joined body An absorbent body joining step for joining the absorbent body to the surface on which the continuous side sheet is disposed, and at least one of the extended portions of the pair of extended portions, the inner side of the outer end in the transverse direction And a pressing step for forming a pressing portion extending from the extending portion to the absorber in the thickness direction in the region of the method.

In the manufacturing method of the present absorbent article, in the sheet bonding step, the continuous surface sheet and the pair of continuous side sheets are bonded to form a bonded body, and outside the pair of first adhesive portions in the continuous surface sheet. A pair of extending portions are formed. And in the subsequent absorbent body joining step, the side of the joined body (opposite to the side on which the continuous surface sheet is disposed) on which the pair of continuous side sheets are disposed, that is, the absorbent article (on the side opposite to the skin side) ) Join the absorber to the non-skin side. Thereafter, in the pressing step, in at least one of the pair of extending portions, a pressing portion extending from the extending portion to the absorber in the thickness direction is provided in an area inside the outer end portion in the transverse direction. Form. By this manufacturing method, the extension part, the continuous side sheet, and the absorbent body are joined to the extension part in a region outside the first adhesive part in the transverse direction and inside the outer end part. The compressed part will be formed. The extension part is joined to the continuous side sheet and the absorber. Since it is joined by squeezing, it is joined more firmly than joining by an adhesive. Therefore, it becomes difficult for the extension part to be separated from the continuous side sheet. That is, it is possible to make it difficult for the extended portion to be drawn. Thereby, in the process after the squeezing process, the outer part of the extension part is twisted while the semifinished product of the absorbent article including the continuous surface sheet, the pair of continuous side sheets and the absorbent body is being conveyed. Thus, it is possible to prevent the adhesive of the first adhesive portion from being exposed and the drowned portion from being caught by the member of the manufacturing apparatus. As a result, the adhesive may contact the members of the manufacturing device, causing problems in the semi-finished product being transported, or being dragged by the hooked part, and the extension part itself may be peeled off from the continuous side sheet. Can be suppressed. At this time, since the squeezing part is formed in a region inside the outer end part in the transverse direction in the extending part, the width direction of the extending part (transverse direction) in the outer end part in the transverse direction of the extending part. ) A shape that can be deformed inward is maintained. In other words, the function of the pair of extending portions (the close contact with the wearer's crotch portion is enhanced, and the leakage preventing property and body compatibility of the absorbent article are enhanced) is maintained.

The manufacturing method of the absorbent article of this invention is (2) The said continuous surface sheet is extended in the said conveyance direction, the center part located in the center of the said cross direction, and extending in the said conveyance direction, The said center A pair of side parts located on both outer sides of the part, and in the transverse direction, the pair of side parts are folded back in a loop toward the center part, and a pair of outer ends of the pair of side parts A folding step of forming a pair of loop portions on both outer sides of the central portion by overlapping a portion with at least a pair of inner end portions of the pair of side portions, and the sheet joining step includes the transverse direction The pair of outer side end portions of the pair of side portions are joined to the pair of continuous side sheets via the pair of first adhesive portions, and the pair of loop portions are extended to the pair of extensions. Including the step of forming as a part, The step of forming the squeezing portion extending from the loop portion to the absorber in the thickness direction in a region inside the outer end portion in the transverse direction in at least one of the pair of loop portions. The manufacturing method of the absorbent article as described in said (1) containing this may be sufficient.
In the manufacturing method of the present absorbent article, a pair of loop portions are formed as a pair of extended portions of the continuous surface sheet, and the absorber exists on the continuous back sheet side of the continuous surface sheet and the pair of continuous side sheets. . And a pair of loop part has the structure where two sheets of upper and lower sheets were piled up, and has a structure thicker and more rigid compared with the extension part formed with one sheet. . Therefore, by forming the squeezed part in the loop part, it is possible to make the outer part of the loop part more difficult to bend even during the transportation of the semi-finished product of the absorbent article in the manufacturing process. Moreover, in the manufactured absorbent article, a loop part is formed as an extension part. The loop part is more elastic than the extension part constituted by a single sheet. Thereby, a pair of loop part can maintain more close_contact | adherence with a wearer's crotch part, and can improve the leak prevention property and body compatibility of an absorbent article.

In the method for producing an absorbent article according to the present invention, (3) in the pressing step, the pressing portion is at least the extension portion of the extension portion from a region inside the outer end portion in the transverse direction. The manufacturing method of an absorbent article according to (2) above, which includes a step of continuously forming a region on the first adhesive portion that is in contact with the inner end portion in the transverse direction.
In the manufacturing method of this absorbent article, since a pressing part is continuously extended from the extension part to the area | region on a 1st adhesion part, a pressing part can be made longer. Thereby, since the force which is going to peel an extension part from a continuous side sheet is distributed and received in the whole long pressing part, peeling of an extension part can be controlled. Moreover, since the pressing part has overlapped with the 1st adhesion part, compared with the area | region where each 1st adhesion part and pressing part exist independently in the overlapping position, an extension part and a continuous side The sheet can be bonded more firmly. Thereby, even if the pressing part of the extension part is peeled off from the continuous side sheet, and the peeling reaches the first adhesive part, the area where the pressing part and the first adhesive part overlap, It can suppress that the above peeling advances.

In the method for producing an absorbent article according to the present invention, (4) in the squeezing step, the squeezing part is moved from the region inside the transverse end of the extending part to the transverse part of the extending part. (3) including a step of continuously forming a region on the first adhesive portion in contact with the inner end portion in the direction and further forming a region opposite to the extension portion with the first adhesive portion interposed therebetween. The manufacturing method of the absorbent article as described in 1) may be sufficient.
In the manufacturing method of this absorbent article, since the pressing part reaches the area on the first adhesive part from the extension part, and is continuously extended to the area beyond it, the pressing part is made even longer. can do. Thereby, since the force which is going to peel an extension part from a continuous side sheet | seat is disperse | distributed and accepted by the whole longer pressing part, peeling of an extension part can be suppressed more. Moreover, even if the pressing part of the extension part is peeled off from the continuous side sheet and the peeling is about to exceed the first adhesive part, the pressing part is formed in the region beyond the first adhesive part. Therefore, it can suppress that further peeling advances by the pressing part in the area | region beyond the 1st adhesion part.

The manufacturing method of the absorbent article of the present invention includes (5) the pressing step includes a step of forming the pressing portion so as to include a plurality of regions on the first adhesive portion, and the pressing portion includes the step of The 1st pressing part in one field on the 1st adhesion part, The 2nd pressing part in the other field on the 1st adhesion part, The 1st pressing part, and the 2nd pressing part And a third compressed portion portion passing through a region opposite to the extending portion with the extending portion or the first adhesive portion interposed therebetween, and described in (3) or (4) above The manufacturing method of this absorbent article may be sufficient.
In the manufacturing method of this absorbent article, the compressed parts are connected to each other, the first compressed part and the second compressed part on the first adhesive part, the first compressed part and the second compressed part, And a third compressed portion connecting the two. Therefore, when the force which peels an extension part from a continuous side sheet | seat arises, by the 1st, 3rd, 2nd pressing part (when a 3rd pressing part passes an extending part), or Since the force is distributed and received by the first and second compressed portions (when the third compressed portion does not pass through the extended portion), the peeling of the extended portion can be further suppressed. In addition, when the third compressed portion does not pass through the extended portion, that is, when the third compressed portion passes through the region opposite to the extended portion across the first adhesive portion, the compressed portion of the extended portion is continuous. Even if it peels off from a side sheet, it can suppress that the peeling advances by the 3rd pressing part part.

The manufacturing method of the absorbent article of this invention is (6) The said pressing process is as described in any one of said (2) thru | or (5) including the process of forming the several pressing part containing the said pressing part. The manufacturing method of this absorbent article may be sufficient.
In the manufacturing method of this absorbent article, since the several pressing part is formed in the extension part, the extension part can be made harder to droop. Thereby, it can suppress that the adhesive agent of a 1st adhesion part is exposed, and the drowned part is caught or peeled off to the member of a manufacturing apparatus.

In the method for manufacturing an absorbent article according to the present invention, (7) any one of the above (2) to (6), wherein the pressing step includes a step of forming the pressing portion in both of the pair of extending portions. The manufacturing method of the absorbent article as described in the item may be sufficient.
In the manufacturing method of this absorbent article, since the pressing part is formed in both of a pair of extension parts, it can make it difficult to twist both of a pair of extension parts. Thereby, in both of a pair of extension parts, it can control that the adhesive agent of the 1st adhesion part is exposed, or the squeezed part is caught by the member of a manufacturing device, or it peels off.

The manufacturing method of the absorbent article of this invention is the process of forming the said pressing part so that the position of the said pressing part may overlap the position of the fold line in the folding process in which the said pressing process folds the said absorbent article. The manufacturing method of the absorbent article as described in any one of said (2) thru | or (7) containing this may be sufficient.
In the manufacturing method of this absorbent article, the pressing part is formed so that the position of the pressing part overlaps the position of the folding line in the folding step. That is, since the extension part at the position of the fold line is firmly joined to the continuous side sheet by the pressing part, the extension part can be moved in the vertical direction even in the folding process in which the dripping force or peeling force easily acts on the extension part. Therefore, it can be made difficult to drown and can be made difficult to peel off.

According to the present invention, in the case of manufacturing an absorbent article having a pair of flap-like extending portions that extend to both outer sides in the width direction of the topsheet, the functions of the pair of extending portions are maintained. On the other hand, an absorbent article capable of suppressing the occurrence of problems such as the outer portions of the pair of extending portions being rolled and the adhesive contacting other members or the extending portions themselves peeling off. Can be provided.

It is a top view which shows the structural example of the absorbent article which concerns on embodiment. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. It is the fragmentary sectional view which expanded a part of FIG. It is a schematic diagram which shows the aspect of wearing of the absorbent article of FIG. It is a schematic diagram which shows the structural example of the manufacturing apparatus of the absorbent article which concerns on embodiment. It is sectional drawing explaining the manufacturing method of the absorbent article which concerns on embodiment. It is sectional drawing explaining the manufacturing method of the absorbent article which concerns on embodiment. It is sectional drawing explaining the manufacturing method of the absorbent article which concerns on embodiment. It is sectional drawing which shows the other structural example of the absorbent article which concerns on embodiment.

The absorbent article according to the embodiment will be described by taking a sanitary napkin as an example. However, the type and application of the absorbent article of the present invention are not limited to the examples, and can be applied to other absorbent articles without departing from the scope of the present invention. Examples of other absorbent articles include panty liners and light incontinence pads.

1 and 2 are diagrams showing a configuration example of an absorbent article 1 (sanitary napkin) according to the present embodiment. FIG. 1 is a plan view showing a state where the absorbent article 1 is developed, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. The absorbent article 1 has a longitudinal direction L, a width direction W, and a thickness direction T orthogonal to each other, and extends to the outer side of the body portion 2 extending in the longitudinal direction L in plan view and the width direction W of the body portion 2. A pair of extending

portions

3 and 3 are provided. Each outwardly extending portion 3 includes a wing portion 6 that extends outward from the substantially central portion in the longitudinal direction L in the width direction W, and thus the absorbent article 1 includes a pair of

wing portions

6 and 6. The absorbent article 1 has a longitudinal centerline C _L extending longitudinally through L the center of the width direction W, the width direction center line of the center extending in street width direction W of the longitudinal direction L of the pair of

wing portions

6 and 6 _CW . Since the longitudinal direction L, the width direction W, and the thickness direction T of the absorbent article 1 coincide with the longitudinal direction, the width direction, and the thickness direction of each material of the absorbent article 1, the absorbent article 1 and each material thereof However, the longitudinal direction L, the width direction W and the thickness direction T are used in common. One and the other in the longitudinal direction L are the front and the rear, respectively, the one and the other in the width direction W are the left and the right, respectively, and one and the other in the thickness direction T are the upper and the lower, respectively. In the absorbent article 1 depicted in FIG. 1, the upper side and the lower side of the figure are the front and rear in the longitudinal direction L, respectively, and the left side and the right side are the left and right sides in the width direction W, respectively. On the other hand, the front side and the back side are above and below the thickness direction T, respectively. The “plan view” means that the absorbent article 1 in a developed state is viewed from the upper side in the thickness direction T. “Skin side” and “non-skin side” refer to the side that is relatively closer to the skin surface of the wearer and the far side in the thickness direction T when the wearer wears the absorbent article 1, respectively. means. The “in-plane direction” is an arbitrary direction parallel to the plane including the width direction W and the longitudinal direction L. A direction toward the longitudinal center line _CL and a direction away from the center line CL are referred to as “inside” and “outside” directions in the width direction W, respectively. The direction toward the center line _CW in the width direction and the direction away from the center line _CW are defined as “inside” and “outside” directions in the longitudinal direction L, respectively. These definitions are also commonly used for each material of the absorbent article 1.

The main body 2 has a substantially rounded rectangular shape or a substantially racetrack shape extending in the longitudinal direction L in plan view. The outer edges of both ends in the longitudinal direction L of the main body 2 have a substantially semicircular or substantially bowl shape. The portion excluding the wing portion 6 of the outer extension portion 3 has a shape that continues to the outside of the main body portion 2, that is, a shape in which the end portion in the width direction W of the main body portion 2 in a substantially rounded rectangular shape or a substantially racetrack shape is extended outward. Have The wing part 6 of the extension part 3 has a trapezoidal shape, a semicircular shape, or a semielliptical shape. When the wing part 6 is trapezoidal, its lower bottom extends along the longitudinal direction L and contacts the side edge in the width direction W of the part of the extension part 3 excluding the wing part 6. When the wing part 6 is semicircular or semi-elliptical, the string extends along the longitudinal direction L and contacts the side edge in the width direction W of the part of the extension part 3 excluding the wing part 6.

The absorbent article 1 is bonded to the top sheet 8 and both end portions of the top sheet 8 on the non-skin side in the width direction W so that each one end overlaps, and a pair of sides extending to both outsides in the width

direction W. Sheets

13 and 13, a back sheet 14, and a top sheet 8 and a pair of

side sheets

13 and 13 and an absorbent body 12 positioned between the back sheet 14 are provided. The top sheet 8 is a liquid permeable sheet. Examples of the surface sheet 8 include liquid-permeable nonwoven fabrics and woven fabrics, synthetic resin films having liquid-permeable holes, and composite sheets thereof. The side sheet 13 is a water repellent sheet. Examples of the side sheet 13 include a nonwoven fabric subjected to water repellent treatment and a synthetic resin film having air permeability. The back sheet 14 is a liquid-impermeable sheet. Examples of the back sheet 14 include liquid-impermeable nonwoven fabrics and synthetic resin films, composite sheets of nonwoven fabrics and synthetic resin films, and SMS nonwoven fabrics. The absorbent article 1 may further include a breathable exterior sheet on the non-skin side of the back sheet 14. The absorbent body 12 has a substantially rounded rectangular shape, a substantially racetrack shape, or a substantially hourglass shape, and is a layer having liquid absorption performance and liquid retention performance, and an absorbent core 12b and a core wrap that covers the absorbent core 12b. 12a. The absorbent core 12b includes a liquid retaining material and an absorbent polymer. Examples of the liquid retaining material include water absorbent fibers such as pulp. Examples of the absorbent polymer include a super absorbent polymer (SAP) that can absorb and retain water. The core wrap 12a is a sheet having liquid permeability, and examples thereof include a hydrophilic nonwoven fabric such as a tissue.

In the present embodiment, the top sheet 8 has a two-layer structure of an upper layer sheet 8a located on the skin side and a lower layer sheet 8b located on the non-skin side. The upper layer sheet 8 a is a so-called surface sheet, and includes a pair of

loop portions

25 and 25 at both ends in the width direction W. In the present embodiment, in the loop portion 25, both side portions in the width direction W of the upper layer sheet 8a are folded in a loop shape inside the width direction W of the upper layer sheet 8a and on the non-skin side (below the thickness direction T). Is formed. The ends (the pair of inner ends of the pair of loop portions 25, 25) on both sides of the folded upper layer sheet 8 a are along the longitudinal direction L along the pair of inner ends facing the pair of

side sheets

13, 13. Are joined to each other by a pair of first

adhesive portions

35, 35 extending intermittently or continuously. In the present embodiment, the pair of first

adhesive portions

35, 35 are joined to regions other than the end portion vicinity regions at both ends in the longitudinal direction L in the loop portion 25. Moreover, in this Embodiment, the edge part of the both sides of the upper layer sheet | seat 8a turned back is further continuous along the longitudinal direction L to the surface of the non-skin side of the both sides of the width direction W of the lower layer sheet | seat 8b. Or it joins mutually by a pair of

2nd adhesion parts

37 and 37 extended intermittently. Further, in the present embodiment, the pair of outer end portions of the pair of

loop portions

25, 25 are intermittently or continuously along the longitudinal direction L to the pair of inner end portions facing the pair of

side sheets

13, 13. Are joined to each other by a pair of third

adhesive portions

33, 33 extending in a straight line. In the present embodiment, the pair of third

adhesive portions

33 and 33 are joined to the end portion vicinity regions at both ends in the longitudinal direction L in the loop portion 25. However, the region near each end in the longitudinal direction L in the loop portion 25 is a region that does not overlap with the excretory opening contact region 30 (described later) in the loop portion 25 when viewed from the width direction W. For example, the region in the vicinity of each end in the longitudinal direction L of the loop portion 25 is a region from each end edge in the longitudinal direction L of the loop portion 25 to a position on the inner side of about 1/5 of the length in the longitudinal direction L of the loop portion 25. It is. These

adhesion parts

33, 35, and 37 are hot melt adhesives, for example. The pair of first

adhesive portions

35, 35, the pair of second

adhesive portions

37, 37 and the pair of third

adhesive portions

33, 33 are a pair of edges of the absorber 12 in the width direction W in plan view. 39, 39 and therefore overlaps the absorber 12. However, although the pair of first

adhesive portions

35 and 35 and the pair of second

adhesive portions

37 and 37 are substantially at the same position in the width direction W in plan view, the pair of second

adhesive portions

37 and 37 are further The position inside the width direction W may be sufficient. On the other hand, the lower layer sheet 8b is a liquid-permeable sheet called a so-called second sheet. The lower layer sheet 8b is slightly smaller in the width direction W than the upper layer sheet 8a. In the present embodiment, both end edges of the lower layer sheet 8b in the width direction W are the outer ends of the pair of

loop portions

25, 25 in plan view. It is located inside the edge 27 and substantially overlaps both end edges in the width direction W of the absorbent body 12. As the lower layer sheet 8b, a synthetic fiber nonwoven fabric, for example, an air-through nonwoven fabric may be mentioned. In addition, the upper layer sheet 8a may include a flange portion and a groove portion that extend along the longitudinal direction L and are arranged at a predetermined interval in the width direction W. The loop portion 25 does not include an elastic member that causes the loop portion 25 to rise upward in the thickness direction T.

In the main body 2, the surface of the top sheet 8 excluding the pair of

loop portions

25, 25 and the non-skin side surface of the pair of

side sheets

13, 13 facing each other and the skin side surface of the absorbent body 12 Are joined by an adhesive (eg, hot melt adhesive) or the like. The non-skin side surface of the absorbent body 12 and the skin side surface of the back sheet 14 are joined with an adhesive or the like. The non-skin side surface in the part located outside the absorbent body 12 of the pair of

side sheets

13 and 13 and the non-skin side surface in the part located outside the absorbent body 12 in the back sheet 14 are bonded. Joined with an agent. Here, the pair of

extended portions

3 and 3 are portions located on both outer sides of the absorbent body 12 in the width direction W among the portions where the pair of

side sheets

13 and 13 and the back sheet 14 are joined. Therefore, the main body portion 2 is a portion other than the pair of

extended portions

3 and 3 in the absorbent article 1.

The absorbent article 1 further includes a plurality of adhesive portions 15 and a pair of

adhesive portions

17 and 17 arranged on the non-skin side surfaces of the main body portion 2 and the pair of

extension portions

3 and 3, respectively. The adhesive portion 15 has, for example, a substantially rectangular shape, and the plurality of adhesive portions 15 are arranged on the non-skin side surface of the back sheet 14 so as to overlap the absorber 12 in plan view, and are continuously in the longitudinal direction L. It extends and is arranged intermittently in the width direction W. The adhesive portion 17 has, for example, a substantially rectangular shape, and the pair of

adhesive portions

17 and 17 are arranged on the non-skin side surface of the back sheet 14 so as to overlap with the pair of

wing portions

6 and 6 in a plan view, and are elongated. It extends continuously in the direction L. As the adhesive part 15 and the adhesive part 17, for example, a known adhesive is used. When the absorbent article 1 is attached to the wearer's underwear, the plurality of adhesive portions 15 affix the non-skin side surface of the main body 2 to the skin side surface of the underwear, and the pair of

adhesive portions

17 and 17 are underwear. The skin-side surfaces of the pair of

wings

6 and 6 folded downward (the non-skin-side surface before folding) are respectively attached to the non-skin-side surfaces of the underwear. Thereby, the absorbent article 1 is fixed to the underwear.

In the absorbent article 1, the excretory opening contact area 30 is set in a central region in the width direction W slightly closer to the front in the longitudinal direction L of the main body 2 in plan view. The excretion opening contact area 30 is an area that faces or contacts the wearer's excretion opening when the absorbent article 1 is worn. The excretion opening | mouth contact | abutting area | region 30 may be set according to the kind and application (example: kind of liquid excretion, wearer's age, and sex) of the absorbent article 1. The excretory opening contact area 30 is, for example, approximately in the longitudinal direction L, approximately in the middle of the absorbent body 12 slightly toward the front, about 3/5 of the entire length of the absorbent body 12 in the longitudinal direction L, and in the width direction W. Thus, the length is set to approximately 3/5 of the entire length of the absorbent body 12 in the width direction W at a substantially central portion of the absorbent body 12.

In the present embodiment, the absorbent article 1 includes pressing portions (squeezing grooves) 18 that are continuously or intermittently positioned on both outer sides in the width direction W of the excretory opening contact area 30. In the present embodiment, the

pressing portions

18 b and 18 a are located on the left and right outer sides of the excretion opening contact area 30 in the width direction W. The pressing part 18 is formed by pressing the top sheet 8 (the side sheet 13) and the core wrap 12a on the skin side and the absorbent core 12b. The bottom part of the pressing part 18 is located in the absorptive core 12b, preferably reaches the core wrap 12a on the non-skin side, and forms the high-density part 41. The shape of the pressing part 18 is arbitrary.

At least a part of the squeezed portion 18 exists in a region inside the outer end portion in the width direction W of the at least one loop portion 25. In this Embodiment, the pressing part 18b contains the pressing part 18bx formed in the area | region inside the outer side edge part of the width direction W in the loop part 25, for example. Therefore, the loop part 25 can be made difficult to bend and can be mainly directed to the outer side in the width direction W without standing up in the thickness direction T when worn. Thereby, in the wearer's crotch portion, the loop portion 25 can be brought into contact with the thigh from substantially the lateral direction, and can be effectively deformed inward in the width direction W. Therefore, the adhesiveness of the loop part 25 and the crotch part can be improved, and the leak preventing property and body compatibility of the absorbent article can be improved.

Moreover, the pressing part 18 is continuous from the area | region inside the outer side edge part of the width direction W in the loop part 25 to the area | region on the 1st adhesion part 35 which contact | connects the inner side edge part of the width direction W of the loop part 25. It is preferable to be formed. In the present embodiment, for example, the compressed portion 18b is continuously formed from a region inside the outer end portion in the width direction W in the loop portion 25 to a region on the first adhesive portion 35. Includes 18 by. Thereby, the loop part 25 can be more difficult to bend and can be more stably directed to the outer side in the width direction W when worn.

Furthermore, the pressing part 18 reaches the area | region on the 1st adhesion part 35 which contact | connects the inner side edge part of the width direction W of the loop part 25 from the area | region inside the outer side edge part of the width direction W in the loop part 25. Furthermore, it is preferable that the first adhesive portion 35 is continuously formed up to a region opposite to the loop portion 25. In the present embodiment, for example, the compressed portion 18b reaches the region on the first adhesive portion 35 from the inner region of the loop portion 25 in the width direction W, and further sandwiches the first adhesive portion 35. The compressed portion 18bx + the compressed portion 18by + the compressed portion 18bz formed continuously up to the region opposite to the loop portion 25 is included. Thereby, the loop part 25 can be made more difficult to bend, and can be more stably directed to the outer side of the width direction W when worn.

Moreover, it is preferable that the pressing part 18 is formed so as to include a plurality of regions on the first bonding part 35. In the present embodiment, the squeezing portion 18b includes a squeezed portion 18by + squeezed portion 18bx + squeezed portion 18by so as to include a plurality of regions (two regions) on the first adhesive portion 35. In this case, one pressing portion 18by is a first pressing portion in one region on the first bonding portion 35, and the other pressing portion 18by is a second pressing portion in another region on the first bonding portion 35. It can be said that the compressed portion 18bx passes through the loop portion 25 and is a third compressed portion. Thereby, the loop part 25 can be made more difficult to bend in a wide range, and can be more stably directed to the outer side in the width direction W when worn.

Moreover, it is preferable that a plurality of the pressing parts 18 exist. In the present embodiment, there are at least two compressed portions 18b (including compressed portions 18bx, 18by, and 18bz) and compressed portions 18a (including compressed portions 18ax, 18ay, and 18az). In addition, pressing part 18ax, 18ay, 18az is a pressing part similar to pressing part 18bx, 18by, 18bz. Thereby, the loop part 25 can be made more difficult to bend in a wider range, and can be more stably directed to the outer side in the width direction W when worn.

Moreover, it is preferable to form the pressing part 18 in both of a pair of

loop parts

25 and 25. FIG. In this Embodiment, with respect to a pair of

loop parts

25 and 25, a pair of

pressing parts

18b and 18b are formed, and also a pair of

pressing parts

18a and 18a are formed. Thereby, the left and right balance in the width direction W can be improved and the loop portion 25 can be made more difficult to bend, and can be more stably directed to the outer side in the width direction W when worn.

In the present embodiment, the absorbent article 1 includes, in the width direction W, a central region 4 that is a region inside the pair of first adhesive portions 35 and 35 (or the pair of second adhesive portions 37 and 37). And a pair of

side regions

5 and 5 located on both outer sides of the central region 4. A pair of boundaries between the central region 4 and the pair of

side regions

5 and 5 is the width direction in each of the pair of first adhesive portions 35 and 35 (or the pair of second adhesive portions 37 and 37) in a plan view. Let it be a pair of imaginary lines parallel to the longitudinal direction L passing through the outermost edge of W. The boundary is outside each of the first adhesive portions 35, 35 (or the pair of second adhesive portions 37, 37) and inside the

edges

39, 39 in the width direction W of the absorbent body 12. Any of the positions may be used.

The pair of

loop portions

25, 25 of the top sheet 8 will be described. FIG. 3 is a partial cross-sectional view taken along the line II-II partially enlarged from FIG. 2, and FIG. 4 is a schematic view showing a manner of wearing the absorbent article of FIG. The pair of

loop portions

25, 25 has a hollow shape in which the upper layer sheet 8a is swollen in a loop shape toward both outer sides with positions corresponding to both side edges of the central region 4 in the upper layer sheet 8a in the width direction W. Have. Specifically, in the loop portion 25, the upper layer sheet 8 a protrudes from the base point toward the side region 5 outside the end edge 39 of the absorber 12 in the width direction W, and in the side region 5. An outer edge 27 is formed. Then, the upper layer sheet 8a is gently folded back in a loop while passing through the outer edge 27, and the first adhesive portion 35 is terminated at the inner side of the outer edge 27 and the edge 39 of the absorbent body 12. As a plan view, it is joined to the side sheet 13 above the absorber 12. The portion of the upper layer sheet 8a that is ahead (end) of the first adhesive portion 35 is joined to the surface on the absorber 12 side in the thickness direction T of the lower layer sheet 8b by the second adhesive portion 37.

When such an absorbent article 1 is attached to the wearer's shorts 55, as shown in FIG. 4, the portions of the pair of

loop portions

25, 25 that bulge into the air protrude outward from the absorber 12, The pair of

edges

39, 39 in the width direction W of the absorber 12 is covered. Therefore, when the absorbent article 1 is sandwiched between the thighs Q, Q of the wearer's legs in the width direction W and the absorbent body 12 is deformed along the shape of the wearer's crotch, a pair of

loop portions

25, 25 can be easily deformed following the deformation of the absorber 12. Therefore, since a pair of

loop parts

25 and 25 can maintain adhesiveness with a wearer's crotch part, a crevice is formed between each loop part 25 and crotch part, and body fluid leaks from the crevice. The situation of side leakage can be suppressed. Furthermore, since the pair of

loop portions

25 and 25 do not include the absorber 12 and are positioned on the skin side with respect to the absorber 12, when the thighs Q and Q press the absorbent article 1 in the width direction W, The

loop portions

25 and 25 are easily deformed more flexibly so as to be crushed in the width direction W according to the shapes of the wearer's thighs Q and Q, and the deformation is not easily inhibited by the absorbent body 12. Therefore, the wearer feels more flexibility and elasticity of the pair of

loop portions

25 and 25 at the thighs Q and Q than when the absorbent body 12 is included in the pair of

loop portions

25 and 25. be able to. Therefore, each of the pair of

loop portions

25, 25 has a soft feel, and even if the wearer presses the absorbent article 1 in the width direction W with the thigh portions Q, Q of both legs, the absorbent body 12 It is possible to make it difficult to feel the hardness, and thus to secure the cushioning function more reliably. Particularly in the present embodiment, the loop portion 25 is provided with the pressing portion 18 on the inner side of the outer edge 27 of the loop portion 25 and on the outer side of the first adhesive portion 35, for example. Therefore, it can suppress that the loop part 25 stands | starts up above the thickness direction T, and can be made to face the outer side of the width direction W at the time of wear stably. Thereby, it can prevent that the absorber 12 contacts a thigh ahead of the loop part 25. FIG. The loop portion 25 can be more reliably brought into contact with the thigh from substantially the lateral direction, and can be effectively deformed inward in the width direction W. Thereby, adhesiveness with a wearer's crotch part in a pair of

loop parts

25 and 25 can be raised more.

The distance between the inner edge (base point) in the width direction W of the loop portion 25 and the outer edge 27, that is, the width of the loop portion 25 is preferably 5 to 38 mm from the viewpoint of securing the cushioning property of the loop portion 25. More preferably, it is 8 to 30 mm. Such a pair of

hollow loop portions

25, 25 can be easily deformed. However, in the width direction W, the inner end portion of the loop portion 25 is a region from the inner end edge (base point) to a position outside about 1/3 of the width of the loop portion 25. On the other hand, the outer end portion in the loop portion 25 is a region from the outer end edge 27 to a position on the inside of about 1/3 of the width of the loop portion 25. Therefore, in the width direction W, the pressing part 18 is a region inside the outer end portion of the loop portion 225, that is, a region from the outer end edge 27 to a position about one third of the width of the loop portion 25. Formed in the inner region. In other words, in the width direction W, the compressed portion 18 is formed in a region from the inner end edge (base point) to a position outside about 2/3 of the width of the loop portion 225. The compressed portion 18 is preferably formed in a region from the inner end edge (base point) to a position about 1/3 of the width of the loop portion 225, more preferably about 1/4. The reason is that if the compressed portion 18 is formed in a region from the outer edge 27 to about 1/3 of the width of the loop portion 25, the cushioning property of the loop portion 25 cannot be secured. However, as another embodiment, in the loop portion 25, the vicinity of the front and rear ends in the longitudinal direction L of the absorbent article 1 where the cushioning property is not necessarily required (range in the longitudinal direction L of the third adhesive portion 33). , The compressed portion 18 may be formed in a region from the outer end edge 27 to a position on the inner side of about 1/3 of the width of the loop portion 25.

Next, an example of a method for manufacturing the absorbent article 1 according to the present embodiment will be described. FIG. 5 is a schematic diagram illustrating a configuration example of the manufacturing apparatus 300 for the absorbent article 1. The manufacturing apparatus 300 includes a first forming unit 300A to a sixth forming unit 300F. The method for manufacturing an absorbent article using the manufacturing apparatus 300 includes first to sixth forming steps. 6 to 8 are diagrams schematically illustrating a method for manufacturing the absorbent article 1. The manufacturing apparatus 300 relates to conveyance of materials such as sheets and semi-finished products, in the conveyance direction MD, the transverse direction CD orthogonal to the conveyance direction MD and along the conveyance surface, and the vertical direction TD orthogonal to the conveyance direction MD and the transverse direction CD. Have. In the present embodiment, the longitudinal direction, the width direction, and the thickness direction of the material and the semi-finished product are all the same as the transport direction MD, the transverse direction CD, and the vertical direction TD. Accordingly, in the material and the semi-finished product, the transport direction MD, the transverse direction CD, and the vertical direction TD are used for the longitudinal direction, the width direction, and the thickness direction, respectively.

In the first forming step, the first forming unit 300A executes the upper layer bulk recovery step, the upper / lower layer bonding application step, the stacking step, and the folding step.

In the upper layer bulk recovery step, the upper layer continuous sheet P12a for the upper layer sheet that has been unwound from the first material roll WR1 is heat-treated by the first heat treatment device 251 while being conveyed in the conveyance direction MD, and the bulk is recovered. The upper continuous sheet P12b is formed. The material of the upper-layer continuous sheet P12a is a continuous sheet that can recover its bulk, and is the material of the upper-layer sheet 8a. In this embodiment, fibers of a PET / HDPE core / sheath structure are used.

Next, in the upper and lower layer joining coating step, the lower layer continuous sheet P13a for the lower layer sheet unwound from the second material roll WR2 is supplied to the coating device 301 while being transported in the transport direction MD. The lower layer continuous sheet P13a is coated with an adhesive (eg, hot melt adhesive) in a predetermined pattern on one surface. Thereby, the lower layer continuous sheet P13a coated with the adhesive, that is, the lower layer continuous sheet P13b is formed. In the present embodiment, the predetermined pattern is a stripe pattern having a predetermined width extending along the transport direction and arranged at a predetermined interval in the transverse direction. The material of the lower layer continuous sheet P13a is a continuous sheet capable of recovering bulk, and is the material of the lower layer sheet 8b. In this embodiment, a fiber having a PET / HDPE core / sheath structure is used.

Next, in the laminating step, as shown in FIG. 6A, the upper layer continuous sheet P12b and the lower layer continuous sheet P13b are respectively conveyed in the conveying direction MD while the outer circumferential surface of the bonding roll 252 and the outer circumference of the bonding roll 256. Supplied to the area facing the surface and sandwiched. Thereby, the upper layer continuous sheet P12b and the lower layer continuous sheet P13b are joined. That is, as shown in FIG.6 (b), the continuous surface sheet P10 for surface sheets which is a laminated body of the upper layer continuous sheet P12b and the lower layer continuous sheet P13b is formed.

In addition, you may provide the cooling process which cools the continuous surface sheet P10 after a lamination process. The state of the fiber recovered by cooling can be fixed, and can be maintained in the subsequent steps. The upper layer bulk recovery step is not limited to the above example, and a known bulk recovery method as disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-137655 may be used.

Next, in the folding step, the continuous surface sheet P10 is supplied to the coating apparatus 302 while being conveyed in the conveyance direction MD. Here, the continuous surface sheet P10 extends in the conveyance direction MD and is located in the center part P10C located in the center of the transverse direction CD, and extends in the conveyance direction MD and is located on both outer sides of the transverse direction CD of the center part P10C. A pair of side portions P10S and P10S. Then, as shown in FIG. 6C, on the lower surface in the up-down direction TD of the continuous surface sheet P10, the pair of side portions P10S, P10S has a pair of inner end portions INS, INS in the transverse direction CD in the conveying direction. An adhesive (eg, hot melt adhesive) is applied in a predetermined pattern along the MD by the application device 302. Thereby, a pair of

2nd adhesion parts

302X and 302X are formed in one side of continuous surface sheet P10. However, the pair of second

adhesive portions

302X and 302X are lower than the pair of outer end portions OTS and OTS in the transverse direction CD in the pair of side portions P10S and P10S on the lower surface in the vertical direction TD of the continuous surface sheet P10. If it is inside, it may be formed outside the pair of inner ends INS and INS.

Then, the continuous surface sheet P10 is supplied to the loop forming device 259 while being conveyed in the conveyance direction MD. And as shown in FIG.6 (d), a pair of side part P10S and P10S are return | folded by the loop formation apparatus 259 containing jig | tool like a sailor in the loop shape toward center part P10C, and a pair of side The pair of outer end portions OTS, OTS in the transverse direction CD of the portions P10S, P10S are overlapped with the pair of inner end portions INS, INS. As a result, the pair of outer end portions OTS, OTS of the pair of side portions P10S, P10S and the pair of inner end portions INS, INS are joined via the pair of second

adhesive portions

302X, 302X. Thereby, the continuous surface sheet P11 in which a pair of

loop portions

225 and 225 are formed on both outer sides of the central portion P10C is formed.

In the second forming process, the second forming unit 300B executes a cutting process and a coating process.

In the cutting step, the continuous side sheet SS for the side sheet that has been rewound from the third material roll WR3 is conveyed in the conveyance direction MD, and the center of the center in the transverse direction CD of the continuous side sheet SS is obtained by the cutting device 260. At the position, a pair of continuous side sheets SSa and SSb that are cut in half in the width direction W along the conveyance direction MD and are adjacent to each other in the width direction W are formed. Then, as shown in FIG. 7A, the pair of continuous side sheets SSa and SSb are conveyed in the conveyance direction MD, while the pair of inner side edges facing each other in the transverse direction CD in the pair of continuous side sheets SSa and SSb. It arrange | positions so that the distance between may become predetermined | prescribed D1. At that time, the pair of side sheets is located at a position separated by a predetermined first distance d1 from the pair of inner side edges facing each other in the pair of continuous side sheets SSa and SSb toward the outer edge of each of the continuous side sheets SSa and SSb. Regions AS and AS are located. However, the pair of side sheet areas AS and AS are areas in which a pair of first

adhesive portions

303X and 303X (corresponding to the pair of first adhesive portions 35 and 35) described later is formed. The first distance d1 is a distance provided in advance so that the adhesive does not protrude when the adhesive of the first adhesive portion 303X described later is applied.

Next, in the coating step, the pair of continuous side sheets SSa and SSb are supplied to the pair of

coating devices

303a and 303b. As shown in FIG. 7B, the pair of continuous side sheets SSa and SSb is formed on a surface of the pair of side sheet areas AS and AS, with a pair of

first bonding portions

303X and 303X (example: hot melt bonding). Agent) is applied in a predetermined pattern. Therefore, a pair of continuous side sheets SSa and SSb coated with an adhesive are formed.

In the third forming step, the third forming unit 300C executes the joining step.

In the joining step, as shown in FIG. 7 (c), first, a second distance d2 is separated from the center of the transverse surface CD in the continuous surface sheet P11 to both outer sides by the second distance d2, and first from the

outer edge

227, 227 to the inner side. A pair of top sheet areas AT and AT are set at positions separated by a distance d3 (> d1) of 3 or more. The pair of top sheet areas AT and AT are areas where the pair of first

adhesive portions

303X and 303X are joined. The third distance d3 is a distance that is larger than the distance that is preliminarily provided so that the adhesive does not protrude, such as the first distance d1, and that the positive enemy extends outward in the width direction W. By securing the third distance d3, the range of the loop portion 225 (corresponding to the loop portion 25) fixed by the first adhesive portion 303X can be set to a desired size, and the loop portion 225 is formed in the width direction W. It can be made to have elasticity.

Then, the pair of continuous side sheets SSa and SSb and the continuous surface sheet P11 are supplied to the joining device 261 of the third forming unit 300C while being conveyed in the conveying direction MD (conveying step), and the pair of the joining devices 261 is paired. It is sandwiched between the joining

rolls

261a and 261b and joined (sheet joining step). Accordingly, as shown in FIG. 7 (d), a pair of topsheet areas AT and AT in the continuous topsheet P11 and a pair of sidesheet areas AS and AS in the pair of continuous sidesheets SSa and SSb are paired first. The continuous surface sheet P2 (bonded body) is formed by bonding through the

first bonding portions

303X and 303X. At this time, the continuous surface sheet P2 (the continuous surface sheet P11) has a pair of

loop portions

225, 225 extending as free ends on both outer sides in the width direction W from the pair of first

adhesive portions

303X, 303X, That is, a pair of extending

portions

225 and 225 are formed.

The pair of first

adhesive portions

303X and 303X is not formed in the pair of side sheet regions AS and AS (a pair of continuous side sheets SSa and SSb), but a pair of surface sheet regions AT and AT (continuous surface) The sheet P11) may be formed.

In the fourth forming step, the fourth forming unit 300D performs the absorber bonding application step and the absorber bonding step.

In the application process for absorber bonding, the continuous surface sheet P2 is supplied to the coating apparatus 304. And the continuous surface sheet P2 is apply | coated to the surface near the pair of continuous side sheets SSa and SSb with an adhesive (example: hot melt adhesive) in a predetermined pattern as an absorber bonding part. As a result, a continuous surface sheet P2 coated with an adhesive is formed as the absorber bonding portion.

Next, in the absorbent body joining step, the continuous surface sheet P2 and the absorbent body P3 arranged in the transport direction MD at a predetermined interval are supplied to the joining device 261 while being transported in the transport direction MD. And the continuous surface sheet P2 and the absorber P3 are clamped between a pair of joining

rolls

261a and 261b of the joining apparatus 261, and are joined. Thereby, as shown to Fig.8 (a), the semi-finished product P4 by which the continuous surface sheet P2 and the absorber P3 were laminated | stacked on the up-down direction TD via the absorber adhesion part is formed. At this time, the continuous surface sheet P2 and the absorber P3 are laminated and bonded so that the pair of first

adhesive portions

303X and 303X overlap the absorber P3 in plan view.

In the fifth forming process, the fifth forming unit 300E executes the pressing process.

In the pressing step, in the fifth forming unit 300E, the semi-finished product P4 is supplied to the pressing device 280 while being transported in the transport direction MD. In the pressing device 280, an embossing roll 280a having a convex portion for pressing on the outer peripheral surface and an anvil roll 280b are disposed facing each other. And the semi-finished product P5 is pinched between the embossing roll 280a and the anvil roll 280b, and is squeezed. Thereby, a pair of

pressing parts

218 and 218 are formed at positions equidistant from the pair of outer end edges 227 and 227 of the pair of

loop parts

225 and 225 in the semi-finished product P4 to the inside of the transverse direction CD. That is, as shown in FIG.8 (b), the semi-finished product P5 which is the semi-finished product P4 in which a pair of pressing part 218,218 was formed is formed. The pair of

pressing parts

218 and 218 are pressing grooves extending from the continuous surface sheet P2 (including the pair of loop parts 225) to the absorbent body P3 in the vertical direction TD. The pair of

pressing parts

218 and 218 are substantially the same as the pair of

pressing parts

18 and 18 of the absorbent article 1. In this Embodiment, the pressing part 218 has the pressing parts 218b and 218a substantially the same as the

pressing parts

18b and 18a, for example. And the structure and characteristic of the pressing parts 218b and 218a are substantially the same as the

pressing parts

18b and 18a. Therefore, for example, the pressing part 218b and the pressing part 218a have pressing parts 218bx, 218by, 218bz and pressing parts 218ax, 218ay, 218az, respectively.

In the sixth forming step, the sixth forming unit 300F performs the back surface bonding step and other steps.

In the back surface joining step, the continuous back surface sheet BS for the back surface sheet is supplied from the fourth material roll WR4 to the joining device 290 while being transported in the transport direction MD. An adhesive (for example, hot melt adhesive) is applied to one surface of the continuous back sheet BS by a coating device 305. On the other hand, the semi-finished product P5 is supplied to the bonding apparatus 290 while being transported in the transport direction MD. Then, the continuous back sheet BS and the semi-finished product P5 are sandwiched and bonded between the pair of bonding rolls 290a and 290b of the bonding apparatus 290. Thereby, as shown in FIG.8 (c), the semi-finished product P6 by which the continuous back surface sheet BS and the semi-finished product P5 were laminated | stacked on the up-down direction TD is formed.

Thereafter, an adhesive part forming step for forming the semi-finished product P7 in which the release sheet CT (adhesive parts 15 and 17) with the adhesive is joined to the semi-finished product P6, and the peripheral part of the semi-finished product P7 to which the release sheet CT is joined The peripheral cutting process in which the absorbent article 1 is formed by cutting into the shape of the absorbent article 1, the folding process in which the absorbent article 1 is folded, and the packaging process for packaging the absorbent article 1 are performed.

As described above, the absorbent article 1 is manufactured.

In the absorbent article 1 (FIG. 1) of the above embodiment, the topsheet 8 includes a pair of

loop portions

25, 25 on both sides, but the present invention is not limited to this example. FIG. 9 is a cross-sectional view illustrating another configuration example of the absorbent article according to the embodiment. In this absorbent article 1, a pair of extending

portions

25, 25 formed of a single sheet are formed on both sides of the top sheet 8 instead of each of the pair of loop portions. The manufacturing method of this absorbent article 1 is a manufacturing method in which the folding step in the first forming step is not performed among the manufacturing methods of the above-described absorbent article (FIG. 1). In this case, since the shape of the extension part is simple, manufacture is easy.

In the manufacturing method of the absorbent article (FIGS. 1 and 9) according to the present embodiment described above, the extension part (225) is located outside the first adhesive part 303X in the transverse direction CD, The pressing part 218 in which the extension part (225), the continuous side sheet SSa (or SSb), and the absorbent body P3 are joined in the up-down direction TD is formed in a region inside the outer end part. That is, the extension part (225) is joined to the continuous side sheet SSa (or SSb) and the absorber P3. Therefore, it is possible to make it difficult for the extending portion (225) to be drawn. Thereby, in the process (example: folding process and packaging process) after the pressing process, the semi-finished products P5, P6, P7 of the absorbent article including the continuous surface sheet P2 and the absorbent body P3, and absorption before folding. In the middle of transporting the property article 1, the outer portion of the extending portion (225) is rolled, and the adhesive of the first adhesive portion 303 </ b> X is exposed or the bent portion is caught by a member of the manufacturing apparatus. Can be suppressed. As a result, the adhesive contacts the member of the manufacturing apparatus, causes a problem in the semi-finished product being transported, or is dragged to the hooked part, and the extension part (225) itself is the continuous side sheet SSa (or Problems such as peeling off from SSb) can be suppressed. At this time, since the squeezing part 218 is formed in a region inside the outer end part of the extending part (225) in the transverse direction CD, in the outer end part of the extending part (225) in the transverse direction CD, A shape that can be deformed inward in the transverse direction CD (width direction W) of the extending portion (225) is maintained. That is, while maintaining the function of the pair of extending portions (225) (increasing adhesion to the wearer's crotch and improving leakage prevention and body suitability of the absorbent article), the pair of extending portions (225) is maintained. It is possible to suppress the occurrence of problems such as the outer portion of the protruding portion (225) being rolled and the adhesive contacting other members or the pair of extending portions (225) themselves being peeled off. Become.

In addition, in order to prevent the outer part of the extension part (225) from curling, it is possible to increase the adhesive of the 1st adhesion part 303X, for example, without forming the pressing part 218. However, in that case, since the amount of the adhesive is increased, there is a portion where the adhesive is hardened and felt in the interior of the absorbent article 1 which is a finished product. Not good because it gets worse. It is also conceivable to form a joint with an adhesive at the same location as the compressed portion 218 without forming the compressed portion 218, for example. However, the bonding with the adhesive is not preferable because the strength is lower than the bonding by pressing, and it takes time to cure the adhesive, and it may not be in time to prevent peeling during the production. Thus, forming the squeezed portion 218 can be said to be an extremely preferable means without causing problems when the other means are used. Furthermore, since the pressing part 218 reaches not only the extension part (225) and the continuous side sheet SSa (or SSb) but also the absorber P3, it can be said that the bonding strength is extremely high and extremely effective in preventing peeling. .

In this Embodiment, as a preferable form, a pair of

loop parts

25 and 25 are used as a pair of extension part of the surface sheet 8 in the absorbent article 1, Correspondingly, in the manufacturing method, the continuous surface sheet P2 is used. A pair of

loop portions

225 and 225 are formed as a pair of extending portions. Moreover, the absorber P3 exists in the continuous back surface sheet BS side rather than the continuous surface sheet P11 and a pair of continuous side sheets SSa and SSb. The pair of

loop portions

225 and 225 have a structure in which two upper and lower sheets are stacked, and are thicker and more rigid than an extension portion configured by a single sheet. It has a structure. Therefore, by forming the squeezing part 218 in the loop part 225, the loop part 225 can be used even during the transport of the absorbent article semi-finished products P5, P6, P7 and the absorbent article 1 before folding in the manufacturing process. It is possible to make it harder to drown the outer part. Moreover, in the manufactured absorbent article 1, the loop part 25 is more elastic compared with the extension part comprised with one sheet. Thereby, a pair of loop part 25 can maintain the adhesiveness with a wearer's crotch part more, and can improve the leak prevention property and body compatibility of an absorbent article more.

In the present embodiment, as another preferred embodiment, the compressed portion 218 is continuously extended from the extended portion (225) to the region on the first adhesive portion 303X (example: compressed portion 218bx + 218by). Therefore, the pressing part 218 can be made longer. Thereby, since the force which is going to peel off the extension part (225) from the continuous side sheet SSa (or SSb) is distributed and received by the whole long pressing part 218, peeling of the extension part (225) can be suppressed. Moreover, since the pressing part 218 has overlapped with the 1st adhesion part 303X, the 1st adhesion part 303X and the pressing part 218 are extended compared with the area | region where each exists independently in the overlapping position. A part (225) and continuous side sheet SSa (or SSb) can be combined more firmly. Thereby, even if the pressing part 218 of the extension part (225) is peeled off from the continuous side sheet SSa (or SSb) and the peeling reaches the first adhesive part 303X, the pressing part 218 and the first It is possible to suppress further peeling by the region where the adhesive portion 303X overlaps.

In the present embodiment, as another preferred embodiment, the compressed portion 218 reaches the region on the first adhesive portion 303X from the extending portion (225), and is continuously extended to the further region. (Example: squeezed portion 218bx + 218by + 218bz). Therefore, the pressing part 218 can be made even longer. Thereby, since the force which tries to peel off the extension part (225) from the continuous side sheet SSa (or SSb) is distributed and received throughout the longer compressed part 218, peeling of the extension part (225) is further suppressed. it can. Moreover, even if the pressing part 218 of the extension part (225) peels off from the continuous side sheet SSa (or SSb) and the peeling is likely to exceed the first adhesive part 303X, the first adhesive part Since the pressing part 218 is formed in the area | region beyond 303X, it can suppress that the further peeling advances by the pressing part 218 in the area | region beyond the 1st adhesion part 303X.

In the present embodiment, as another preferred embodiment, the compressed portion 218 is formed so as to include a plurality of regions on the first adhesive portion 303X. At that time, the compressed portion 218 is connected to the first compressed portion (example: compressed portion 218by) and the second compressed portion (illustrated: compressed portion 218by) on the first adhesive portion 303X and the first. The 3rd pressing part (illustration: pressing part 218bx) which connects the pressing part and 2nd pressing part of this is comprised. Therefore, when the force which peels the extension part (225) from the continuous side sheet SSa (or SSb) is generated, the first, third and second compressed parts (218by + 218bx + 218by) are (the third compressed part is When passing through the extension part) or by the first and second compressed parts (218by, 218by) (when the third compressed part does not pass through the extended part), the force is distributed and received. Peeling of the extension part (225) can be further suppressed. Moreover, when the 3rd pressing part does not pass through the extension part (225) (example: pressing part 218bz), ie, it passes through the area | region on the opposite side to the extension part (225) on both sides of the 1st adhesion part 303X. In the case, even if the pressing part 218 of the extension part (225) is peeled off from the continuous side sheet SSa (or SSb), it is possible to suppress the progress of the peeling by the third pressing part part.

In the present embodiment, as another preferred embodiment, a plurality of pressing parts 218 are formed in the extending part (225) (example: pressing part 218b and pressing part 218a), and therefore the extending part (225) is used. It can be made more difficult to drown. Thereby, it is possible to suppress the adhesive of the first adhesive portion 303 </ b> X from being exposed, and the bent portion from being caught or peeled off by a member of the manufacturing apparatus.

In the present embodiment, as another preferred embodiment, the pressing part 218 is formed on both of the pair of extending parts (225, 225) (example: a pair of pressing parts 218b, 218b). Therefore, it is possible to make the pair of extending portions (225, 225) more difficult to bend. Thereby, in both the pair of extending portions (225, 225), it is possible to prevent the adhesive of the first adhesive portion 303X from being exposed, and the bent portion from being caught or peeled off by a member of the manufacturing apparatus. it can.

In the present embodiment, as another preferred embodiment, the pressing part 218 is formed so that the position of the pressing part 218 overlaps with the position of the folding line in the folding step of folding the absorbent article 1. That is, since the extending part (225) at the position of the folding line is firmly joined to the continuous side sheet SSa (or SSb) by the pressing part 218, the force to bend or peel off acts on the extending part (225). Also in the easy folding process, the extension part (225) can be made difficult to bend in the vertical direction TD, and can be made difficult to peel off.

The absorbent article of the present invention is not limited to the above-described embodiments, and can be appropriately combined and changed without departing from the object and spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Absorbent article 218 Press part 225 Loop part (extension part)
303X 1st adhesion part P3 Absorber P11 Continuous surface sheet SSa, SSb Continuous side sheet

Claims

A top sheet, a pair of side sheets joined so that one end thereof overlaps both ends of the top sheet on the non-skin side in the width direction, and an absorbent body joined to the top sheet and the pair of side sheets A method of manufacturing an absorbent article comprising:
A conveying step of conveying the pair of continuous side sheets for the pair of side sheets adjacent to each other in the conveying direction and the continuous surface sheet for the top sheet extending in the conveying direction in the conveying direction. When,
The continuous surface sheet and the pair of continuous side sheets so that both ends in the transverse direction of the continuous surface sheet and a pair of inner end portions facing each other in the transverse direction of the pair of continuous side sheets overlap. By joining through a pair of 1st adhesion parts and forming a joined object, it extends as a free end to the both outside of the transverse direction rather than the pair of 1st adhesion parts in the continuous surface sheet A sheet joining step for forming a pair of extending portions;
An absorbent body joining step for joining an absorbent body to a surface of the joined body on the side where the pair of continuous side sheets are disposed;
A pressing portion extending from the extension portion to the absorber in the thickness direction is formed in a region inside the outer end portion in the transverse direction in at least one extension portion of the pair of extension portions. Pressing process;
Comprising
Manufacturing method of absorbent article.
The continuous surface sheet extends in the transport direction and has a central portion located at the center in the transverse direction, and a pair of side portions that extend in the transport direction and are located on both outer sides of the central portion. Including
In the transverse direction, the pair of side portions are folded back in a loop toward the central portion, and the pair of outer end portions of the pair of side portions are overlapped with at least the pair of inner end portions of the pair of side portions. A folding step of forming a pair of loop portions on both outer sides of the central portion,
In the transverse direction, the pair of outer end portions of the pair of side portions are joined to the pair of continuous side sheets via the pair of first adhesive portions in the transverse direction. A step of forming the loop portion as the pair of extending portions,
The squeezing step includes the squeezing that extends from the loop portion to the absorber in the thickness direction in a region inside the outer end portion in the transverse direction in at least one of the pair of loop portions. Including a step of forming a part,
The manufacturing method of the absorbent article of Claim 1.
In the pressing step, the pressing portion is on the first adhesive portion contacting at least the inner end portion in the transverse direction of the extending portion from a region inside the outer end portion in the transverse direction in the extending portion. Including a step of continuously forming up to a region of
The manufacturing method of the absorbent article of Claim 2.
In the pressing step, the pressing portion is formed on a first adhesive portion that is in contact with the inner end portion in the transverse direction of the extending portion from a region inside the outer end portion in the transverse direction in the extending portion. Reaching the region, further including the step of continuously forming the region opposite to the extension portion across the first adhesive portion,
The manufacturing method of the absorbent article of Claim 3.
The pressing step includes a step of forming the pressing portion so as to include a plurality of regions on the first bonding portion,
The pressing portion includes a first pressing portion in one region on the first bonding portion, a second pressing portion in another region on the first bonding portion, and the first pressing portion. Connecting the second compressed portion, and a third compressed portion portion passing through the region opposite to the extended portion with the extended portion or the first adhesive portion interposed therebetween,
The manufacturing method of the absorbent article of Claim 3 or 4.
The pressing step includes a step of forming a plurality of pressing parts including the pressing part.
The manufacturing method of the absorbent article as described in any one of Claims 2 thru | or 5.
The pressing step includes a step of forming the pressing portion in both of the pair of extending portions.
The manufacturing method of the absorbent article as described in any one of Claims 2 thru | or 6.
The pressing step includes a step of forming the pressing portion so that the position of the pressing portion overlaps the position of the folding line in the folding step of folding the absorbent article.
The manufacturing method of the absorbent article as described in any one of Claims 2 thru | or 7.