WO2013018652A1

WO2013018652A1 - Absorbent article

Info

Publication number: WO2013018652A1
Application number: PCT/JP2012/068991
Authority: WO
Inventors: 黒田　賢一郎
Original assignee: ユニ・チャーム株式会社
Priority date: 2011-07-29
Filing date: 2012-07-26
Publication date: 2013-02-07
Also published as: JP5823765B2; JP2013031477A

Abstract

This absorbent article (1) has: a main absorbent body (45) having a front surface sheet (10), a back surface sheet (20), and a front absorbent body (30); and a pair of wing sections (43, 44) extending to the both outer sides in the widthwise direction from the main absorbent body (45). The wing sections are each folded back to the skin-contacting surface of the main absorbent body; the outer edges (43a, 44a) in the widthwise direction of the wing sections are provided with wing-adhering regions to which an adhesive material has been coated; wing-protecting sheets (61) are temporarily adhered to the wing-adhering regions (51); and a bridging sheet (80) disposed straddling both protecting sheets is joined to the pair of protecting sheets.

Description

Absorbent articles

This invention relates to the absorbent article in which the wing part extended in the width direction both outer sides rather than the absorptive main body was formed.

Patent Document 1 and Patent Document 2 include an absorbent main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet, and absorption The absorbent article which has a wing part extended in the width direction outer side rather than the property main body is described. A wing adhesive region to which an adhesive material is applied is provided on the surface of the wing portion on the non-skin contact surface side. In a state before using the absorbent article, the wing portion is folded back to the skin contact surface side, and a protective sheet for preventing deterioration of the adhesive material is attached to the wing adhesive region.

The protective sheet of Patent Document 1 extends over a pair of wing adhesive regions, and is composed of a single sheet so as to cover both wing adhesive regions. The protective sheet of patent document 2 is comprised by 2 sheets so that the adhesion area | region of a pair of wing part may be covered, respectively.

Japanese Utility Model Publication No. 6-26833 (Fig. 1 etc.) JP-A-8-66427 (FIG. 1 etc.)

However, the above absorbent article has the following problems.

The wing adhesive region of the absorbent articles of Patent Literature 1 and Patent Literature 2 is arranged on the inner side of the outer end portion in the width direction of the wing portion. That is, the wing adhesive region is not arranged at the outer end portion in the width direction of the wing portion. The rigidity of the width direction edge part of a wing part becomes low compared with the rigidity of the wing part by which the wing adhesion area | region is arrange | positioned. Therefore, when the wing part is wrapped around the underwear, the outer end in the width direction of the wing part is twisted, the wing adhesive areas stick to each other, or the wing adhesive area is other than the underwear (for example, non-skin contact of the absorbent article). May stick to the contact surface).

Furthermore, since the wing adhesive area is not arranged at the width direction outer side edge of the wing part, the width direction outer side edge part of the wing part is turned over or in a state where the wing part is wound around the underwear. It may progress and the entire wing part may come off from the underwear.

Moreover, when using the absorbent article of patent document 1 and patent document 2, the protective sheet which covers a wing adhesion area | region is gripped, and a protection sheet is peeled from a wing adhesion area | region. For example, if the area of the protective sheet is approximately the same as the area of the wing adhesive area or slightly larger than the wing adhesive area, the finger holding the protective sheet touches the wing adhesive area, and the adhesive adheres to the finger etc. There is a risk. For example, when the wing adhesive region is disposed at the outer end in the width direction of the wing portion, the adhesive material easily adheres to the hand or the like when the protective sheet is peeled off.

When the adhesive material adheres to the finger or the like, the wing part may bend following the finger or the like, and the adhesive material may adhere to each other, or the adhesive material may adhere to the sanitary napkin. Therefore, the protective sheet may not be removed from the wing part easily and appropriately while maintaining the adhesive effect of the adhesive material.

Therefore, the present invention has been made in view of the above-described problem, and the wearer can easily and appropriately remove the protective sheet from the wing portion while maintaining the adhesive effect of the adhesive material. Another object is to provide an absorbent article that can be attached to underwear.

In order to solve the problems described above, an absorbent article according to the present disclosure includes a liquid-permeable top sheet (top sheet 10), a liquid-impermeable back sheet (back sheet 20), the top sheet, and the back surface. An absorbent main body (absorbent main body 45) having an absorbent body (absorbent body 30) provided between the sheet and a pair of wing portions extending outward in the width direction of the absorbent article from the absorbent main body. (The wing parts 43, 44), and the absorbent article (absorbent article 1), wherein the wing parts are respectively folded back to the skin contact surface of the absorbent main body, and the pair of wing parts The wing adhesive region coated with an adhesive material is provided on the outer end in the width direction (width direction

outer end

43a, 44a) of the non-skin contact surface of at least one of the wing parts, Wing adhesive area A pair of protective sheets (wing protective sheet 61) that respectively cover the wing adhesive areas are temporarily attached to the wing adhesive areas 51), and the pair of protective sheets are bridged across the protective sheets. The gist is that the sheet (crosslinked sheet 80) is bonded.

It is a top view of an absorptive article in the state where an individual package concerning a 1st embodiment was opened. It is the top view seen from the skin contact surface side of the absorbent article shown in FIG. It is a rear view of the absorbent article shown in FIG. FIG. 2 is a schematic cross-sectional view taken along the line AA shown in FIG. It is sectional drawing which shows typically the mounting | wearing aspect to the underwear of the absorbent article shown in FIG. It is a figure for demonstrating the manufacturing method of the absorbent article which concerns on 1st Embodiment. It is the figure which expanded a part of figure for demonstrating the manufacturing method of the absorbent article shown in FIG. It is a top view of an absorptive article in the state where an individual package concerning a 2nd embodiment was opened. It is sectional drawing which shows typically the mounting | wearing aspect to the underwear of the absorbent article shown in FIG. It is a top view of an absorptive article in the state where an individual package concerning a 3rd embodiment was opened. It is sectional drawing which shows typically the mounting | wearing aspect to the underwear of the absorbent article shown in FIG. It is a rear view of the absorbent article which concerns on 3rd Embodiment.

(First embodiment)
With reference to FIGS. 1-7, the absorbent article 1 which concerns on 1st Embodiment is demonstrated. FIG. 1 is a plan view of an absorbent article in a state where individual packaging is opened, and FIG. 2 is a plan view of the absorbent article as viewed from the skin contact surface side. 3 is a rear view of the absorbent article, and FIG. 4 is a schematic cross-sectional view taken along the line AA shown in FIG. The absorbent article 1 in this Embodiment is a sanitary napkin, for example.

The absorbent article 1 is individually packaged with a packaging sheet 70. The packaging sheet 70 has a facing surface 71 that faces the absorbent article 1 on the back sheet 20 side of the absorbent article 1 and a non-facing surface 72 that is positioned outside in a state in which the absorbent article 1 is accommodated.

The absorbent article 1 is folded with the surface sheet 10 of the absorbent article 1 inside, with a predetermined fold along the width direction W as a base point in a state of being disposed on the packaging sheet 70. One end of the absorbent article 1 and the packaging sheet 70 in the longitudinal direction L of the packaging sheet 70 is attached to the packaging sheet 70 via the adhesive tape 75 in a folded state. In this way, the absorbent article 1 is individually packaged by the packaging sheet 70. The packaging sheet 70 according to the present embodiment is a polyethylene film having a basis weight of 23 g / m ² .

In addition, when the absorbent article is folded, a wing portion described later is folded back to the center side in the width direction of the absorbent article. FIG. 1 shows a state in which the absorbent article 1 is opened after individually packaging the absorbent article 1 with the packaging sheet 70. FIG. 2 shows a state in which the wing portion is opened outward in the width direction.

The absorbent article 1 includes a top sheet 10 that comes into contact with the wearer's skin, a liquid-impermeable back sheet 20 that does not transmit liquid, and an absorber 30. The absorber 30 is disposed between the top sheet 10 and the back sheet 20. Therefore, the absorber 30 is shown with a broken line in FIG. The absorbent body 30 is disposed at the central portion in the longitudinal direction L and the width direction W of the absorbent article 1.

The absorbent article 1 is located in the center of the width direction W orthogonal to the longitudinal direction L in the plan view shown in FIG. 1, and has an absorbent main body 45 having a top sheet 10, a back sheet 20, and an absorbent body 30, and absorption.

Wings

43 and 44 provided on the outer side of the main body 45 in the width direction. Furthermore, the absorbent article 1 includes

side sheets

41 and 42 provided outside the absorber 30 in the width direction W.

The top sheet 10 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 10 covers at least the surface of the absorber 30. The top sheet 10 is not particularly limited as long as it is a sheet-like material having a structure that allows liquid to permeate, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, and a mesh sheet. Either natural fibers or chemical fibers can be used as the woven or non-woven material. The topsheet 10 of this embodiment is a through-air bonded nonwoven fabric having a basis weight of 25 g / ^{m 2.}

The back sheet 20 has substantially the same length as that of the top sheet 10. The back sheet 20 may be a film mainly composed of polyethylene, polypropylene or the like, a breathable resin film, a sheet obtained by bonding a breathable resin film to a nonwoven fabric such as spunbond or spunlace. The back sheet 20 is preferably made of a material having flexibility that does not cause a sense of incongruity when worn. The back sheet 20 of the present embodiment is a liquid-impermeable polyethylene film having a basis weight of 23 g / m ² .

The absorber 30 includes hydrophilic fibers and pulp. The absorber 30 is formed of a material that can absorb body fluid such as menstrual blood. The absorbent body 30 may be formed by laminating hydrophilic fibers or powder by the airlaid method, an airlaid sheet obtained by forming hydrophilic fibers or powder into a sheet by the airlaid method, or a tissue (for example, It may be formed by placing pulverized pulp mixed with a superabsorbent polymer on a basis weight of 15 g / m ² ) and wrapping the pulverized pulp with a tissue. The absorbent body 30 according to the present embodiment is formed by placing a superabsorbent polymer and softwood kraft pulp on a tissue having a basis weight of 15 g / m ² and wrapping the tissue with a tissue.

The

side sheets

41 and 42 are disposed on both sides of the top sheet 10. The

side sheets

41 and 42 can be selected from the same material as the top sheet 10. However, in order to prevent menstrual blood from flowing over the

side sheets

41 and 42 to the outside in the width direction of the absorbent article 1, it is preferable to have hydrophobicity or water repellency. The

side sheets

41 and 42 of the present embodiment are SMS nonwoven fabrics having a basis weight of 15 g / m ² . The

side sheets

41 and 42 cover a part of the side edge of the absorber 30 and the

wing parts

43 and 44.

In the back sheet 20, a plurality of adhesive regions 50 to which an adhesive material is applied are provided on the surface in contact with the undergarment (see FIG. 3). The adhesive region 50 includes a main body adhesive region 52 that is intermittently disposed along the longitudinal direction L in the back surface sheet 20 of the absorbent main body 45, and a wing adhesive region provided on the back sheet 20 of the wing portion 43 and the wing portion 44. 51. The wing adhesive region 51 is provided so as to cover the width direction

outer end portions

43a and 44a of the

wing portions

43 and 44 located at the width direction outer end portions of the absorbent article.

The protective sheet 60 is temporarily attached to the adhesive region 50 so as to be peelable. The protective sheet 60 prevents the adhesive material from being deteriorated before use. The protective sheet includes a wing protective sheet 61 that covers the wing adhesive region 51 and a main body protective sheet 62 that covers the main body adhesive region 52.

The pair of wing protection sheets 61 are arranged apart from each other in the width direction. A bridge sheet 80 (see FIG. 1) is disposed across the pair of wing protection sheets 61 in a state of being folded inward in the width direction. The bridging sheet 80 is joined to both wing protection sheets 61 via the joining portion 90, and couples the pair of wing protection sheets 61.

The main body protective sheet 62 is disposed so as to face the packaging sheet 70 and is joined to the packaging sheet 70 via the joining portion 90.

In addition, the adhesive material apply | coated to the adhesion area | region 50 can illustrate a hot-melt-adhesive agent, for example. The hot melt adhesive preferably has tackiness at room temperature, and a pressure sensitive adhesive can be suitably used. The pressure-sensitive adhesive material is applied in a uniform, streak-like or dot-like pattern by coater coating, bead coating or the like at 10 to 200 g / m ² . The adhesive material may be an acrylic adhesive material.

As an example of another adhesive material, there is a hook material that engages with underwear. Specifically, the hook member has, for example, a sheet-like tape portion and a plurality of hook portions standing from the surface of the tape portion. By hooking the hook part on the undergarment, the absorbent article can be bonded to the undergarment. Moreover, it is preferable that the end surface of a hook part is rounded in order to reduce irritation | stimulation to skin. Specifically, the structure which formed the top part of the hook in the shape of a curve by the shape of a metal mold | die can be illustrated. The cross-sectional shape of the hook portion is not particularly limited, and examples thereof include a tapered shape and a T-shape.

The pressure-sensitive adhesive material according to the present embodiment is a rubber-based hot melt adhesive. The wing adhesive region 51 is 15 mm × 30 mm, and a hot melt adhesive is applied at a basis weight of 50 g / m ² by coater coating. The main body adhesive region 52 is provided in 10 rows of 4 mm × 165 mm, and a hot melt adhesive is applied with a basis weight of 25 g / m ² by coater coating.

The protective sheet 60 only needs to be able to cover the adhesive material in a peelable manner, and various materials can be used. The wing protection sheet 61 and the main body protection sheet 62 according to the present embodiment are made of paper having a weight per unit area of 35 g / m ^{2 in} which a contact surface with the adhesive material is subjected to a peeling process.

The joint 90 is made of a rubber-based hot melt adhesive. The junction 90 in the present embodiment was coated with a hot melt adhesive with a basis weight of 20 g / m ² by coater coating. The cross-linked sheet 80 is made of the same paper as the protective sheet 60. In addition, since the bridge | crosslinking sheet 80 is not comprised so that peeling with respect to the junction part 90 is carried out, the peeling process is not given to the surface of the bridge | crosslinking sheet 80. FIG.

In the absorbent article 1, the periphery of the top sheet 10, the

side sheets

41 and 42, and the back sheet 20 is joined by embossing to enclose the absorbent body 30. In FIG. 1 to FIG. 3, the embossed joining region R joined by embossing is indicated by hatching. Moreover, as for the absorbent article 1, the pressing part 35 which compressed the surface sheet 10 and the absorber 30 in the thickness direction T is formed.

Next, with reference to FIG. 5, a description will be given of how the absorbent article 1 according to the first embodiment is attached to the underwear. FIG. 5 shows the mounting manner by the cross section shown in FIG. The state shown in FIG. 5A is a state where the absorbent article 1 individually packaged by the packaging sheet 70 is opened. A pair of

wing parts

43 and 44 are folded by the skin contact surface side. The pair of wing protection sheets 61 are joined to one bridge sheet 80.

When the absorbent article 1 configured in this way is attached to the underwear, the absorbent article 1 and the packaging sheet 70 are first separated. A main body protective sheet 62 is bonded to the packaging sheet 70 via a bonding portion 90. Therefore, by separating the absorbent article 1 from the packaging sheet 70, the main body protective sheet 62 is separated from the absorbent article 1 together with the packaging sheet 70. Therefore, the main body adhesion area | region 52 provided in the back surface sheet 20 side of the absorptive main body 45 of the absorbent article 1 is open | released. By bonding the main body adhesive region 52 to the skin contact surface side of the crotch portion of the underwear S, the state shown in FIG.

Next, the crosslinked sheet 80 is separated from the

wing portions

43 and 44. A wing protection sheet 61 is joined to the bridging sheet 80 via a joining portion 90. Therefore, by separating the crosslinked sheet 80 from the

wing portions

43 and 44, the wing protection sheet 61 is separated from the

wing portions

43 and 44 together with the crosslinked sheet 80. As shown in FIG.5 (c), the wing adhesion area | region 51 provided in the back sheet 20 side of the

wing parts

43 and 44 of an absorbent article is open | released.

Next, as shown in FIG. 5D, one wing portion 44 is folded back to the non-skin contact surface side of the crotch portion of the underwear S, and the wing adhesive region 51 is adhered to the underwear. Next, as shown in FIG. 5E, the other wing portion 43 is folded back to the non-skin contact surface side of the crotch portion of the underwear, and the wing adhesive region 51 is adhered to the underwear. In this way, the absorbent article 1 can be attached to the underwear.

Since the wing adhesive regions 51 are provided in the width direction

outer end portions

43a, 44a of the

wing portions

43, 44, the width direction outer ends of the

wing portions

43, 44 in a state where the

wing portions

43, 44 are wound around the underwear S. The

parts

43a and 44a can be appropriately bonded to the undergarment S.

Specifically, since the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44 are in close contact with the underwear, there is no gap between the underwear and the

wing portions

43 and 44, and the clothes and the underwear are hardly caught. Therefore, it is possible to suppress the occurrence of a problem that the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44 are turned over, or the turned-up state further proceeds and the entire wing portion is peeled off from the underwear.

In addition, for example, by firmly fixing the

wing parts

43 and 44 to the underwear, even when the absorbent article 1 is used for a long time, the wing part is difficult to peel off, and the absorbent article 1 is prevented from being displaced, Body fluid leakage can be reduced. Moreover, since the state which covered the underwear with the

wing parts

43 and 44 can be maintained, even if it is a case where an integrated liquid leaks, it can prevent that a bodily fluid adheres to underwear.

Further, since the wing adhesive region 51 is positioned at the width direction

outer end portions

43a and 44a of the

wing portions

43 and 44, the wing adhesive region 51 is gripped when the width direction

outer end portions

43a and 44a of the

wing portions

43 and 44 are gripped. May adhere to hands. However, the user can grip the bridging sheet 80 and peel off the wing protection sheet 61, and the wing adhesive region 51 is provided in the width direction outer

side end portions

43a, 44a of the

wing portions

43, 44. However, the wing protection sheet 61 can be peeled off from the

wing portions

43 and 44 while suppressing adhesion to the hand or the like.

Further, the bridging sheet 80 according to the present embodiment is arranged to extend outward in the width direction from the wing protection sheet 61. Therefore, when removing the wing protection sheet 61, the user can easily grip the crosslinked sheet 80 without directly touching the wing adhesive region 51. In addition, the bridge | crosslinking sheet 80 may be arrange | positioned so that it may extend outside the wing protection sheet 61 in the width direction, and may be arrange | positioned so that it may extend outside the wing protection sheet 61 in the longitudinal direction.

Since the wing adhesive region is provided in the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44, the rigidity of the outer end portion of the wing portion can be increased. Therefore, the wing portions are prevented from being swayed, and the wing adhesive regions 51 are adhered to each other by the swaying of the width direction

outer end portions

43a and 44a of the

wing portions

43 and 44, or the wing adhesive region 51 is a part other than the underwear (for example, absorbent The problem of sticking to the non-skin contact surface of the article can be suppressed.

Moreover, the width direction outer

side edge parts

43a and 44a of the

wing parts

43 and 44 are located in the width direction center side of the underwear in the state which wound the

wing parts

43 and 44 around the underwear, as shown in FIG.5 (e). In a state where the absorbent article 1 is attached to the underwear, the portion located at the outer end in the width direction of the underwear is likely to receive an external force from the outer side in the width direction toward the inner side in the width direction by the wearer's leg or the like. On the other hand, the center side in the width direction of the underwear is a place that is relatively difficult to receive external force and is a portion that is difficult to deform. By bonding the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44 to the underwear, the wing portion can be fixed at the center portion in the width direction of the underwear which is difficult to be deformed, and deformation of the

wing portions

43 and 44 can be suppressed.

By suppressing the deformation of the

wing parts

43, 44, it is difficult to generate wrinkles in the

wing parts

43, 44, and it is possible to reduce the trouble of reattaching the wing part to the underwear. Further, by reducing wrinkles of the

wing portions

43 and 44, it becomes easy to maintain a stable joined state, and displacement with respect to underwear can be prevented.

Next, a part of the manufacturing method of the absorbent article will be described with reference to FIGS. FIG.6 and FIG.7 is a figure for demonstrating the manufacturing method of an absorbent article. In addition, about the method which is not described in FIG.6 and FIG.7, the existing method can be used.

The manufacturing method of the absorbent article includes an upper layer forming step S1, an absorber bonding step S2, a lower layer forming step S3, a lower layer bonding step S4, a cutting and embossing step S5, a wing folding step S6, and a crosslinked sheet forming step. S7 and cross-linked sheet joining step S8.

In S1, an upper layer forming step is performed. Specifically, the upper layer sheet is formed by bonding the first web W1 constituting the top sheet 10 and the second web W2 constituting the

side sheets

41 and 42.

In S2, an absorber bonding process is performed. Specifically, the pre-molded absorber 30 and the upper layer sheet formed in S1 are joined. In addition, joining of an upper layer sheet | seat and an absorber can be joined by a hot melt adhesive, for example.

In S3, a lower layer forming process is performed. Specifically, an adhesive is applied to the third web W3 constituting the wing protection sheet 61 to provide the wing adhesion region 51, and then the third web W3 is cut to form the wing protection sheet 61. Next, a wing protection sheet 61 is attached to the fourth web W4 constituting the back sheet 20 so that the wing adhesive region 51 is in contact with the fourth web W4 to form a lower layer sheet.

In S4, a lower layer joining process is performed. Specifically, the lower layer sheet formed in S3 is bonded to the absorber and the upper layer sheet. In addition, joining of a lower layer sheet | seat, an absorber, and an upper layer sheet | seat can be joined by a hot-melt-adhesive agent, for example.

In S5, a cutting and embossing process is performed. Specifically, embossing is performed in a state where the top sheet, the back sheet, the absorber, and the wing protection sheet are overlapped to form the embossed bonding region R, and the top sheet is formed along the outer shape of the absorbent article 1. The 1st web W1 which comprises, the 4th web W4 which comprises a back surface sheet, and the 3rd web W3 which comprises a wing protection sheet are cut | disconnected.

FIG. 7 shows the wing portion 44 in a state where the top sheet, the back sheet, and the wing protection sheet are cut in S5. In FIG. 7, the filled area is a portion cut out by the cutting process. At this time, in order to cut the wing protection sheet 61 along the outer shape of the absorbent article 1, even if the adhesive material protrudes from the width direction outer

side end portions

43a, 44a of the

wing portions

43, 44, the adhesive that protrudes. The material can be cut out.

In the order of the cutting step and the embossing step in S5, the embossing step may be performed after the cutting step, the cutting step may be performed after the embossing step, or the cutting step and the embossing step may be performed simultaneously. In addition, by performing a cutting process after an embossing process, it can make it difficult to adhere an adhesive material to the blade which cut | disconnects a web etc. in a cutting process. Specifically, the thickness of the adhesive material that forms the wing adhesive region 51 is reduced by embossing. Therefore, the cross-sectional area of the adhesive material that contacts the blade that cuts the web or the like is reduced, and the adhesive material that adheres to the blade can be reduced.

In S6, a wing folding process is performed. Although omitted in the drawings, in the process of transporting from S5 to S6, the absorbent article is inverted in the thickness direction, and the state shown in S6 is such that the top sheet side is positioned upward.

In the wing folding step, specifically, the

wing portions

43 and 44 are folded back to the skin contact surface side of the absorbent main body 45. In the state where the wing portion is folded, the wing protection sheet 61 provided on the back sheet 20 side of the wing portion is positioned above.

In S7, a crosslinked sheet forming step is performed. Specifically, after the joining portion 90 is formed on the fifth web W5 constituting the crosslinked sheet, the fifth web W5 is cut to form the crosslinked sheet 80.

In S8, a cross-linked sheet joining step is performed. Specifically, the bridging sheet 80 is bonded to the pair of wing protection sheets 61. By joining the bridging sheet 80 to the wing protection sheet 61, the state in which the

wing portions

43 and 44 are folded is maintained. The absorbent article 1 is individually packaged by the packaging sheet 70 with the

wing portions

43 and 44 folded.

After sticking the adhesive material to the

wing parts

43, 44 through the wing protection sheet 61 and cutting the wing protection sheet 61 along the width direction

outer end parts

43a, 44a of the

wing parts

43, 44, the wing part 43, Since 44 is folded back, it is possible to suppress a problem that the adhesive material attached to the

wing portions

43 and 44 adheres to the topsheet 10 when the adhesive material is applied. Therefore, the restriction | limiting of the position of the adhesive material of a wing part can be reduced, and an adhesive material can be attached | subjected to the appropriate position of a wing part.

In addition, since the adhesive material is attached to the wing portion and then cut along the width direction outer end portion of the wing portion, even if the adhesive material protrudes from the width direction outer end portion of the wing portion, it sticks out. The adhesive material can be removed.

Moreover, in S5, the embossing is performed in a state where the top sheet 10, the back sheet 20, the absorber 30 and the wing protection sheet 61 are overlapped, and the embossed bonding region R is recessed and protruding in the thickness direction. Is formed.

At this time, the embossed bonding region R is also formed in the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44 in which the wing adhesive region 51 is provided. An uneven portion is formed in the wing adhesive region 51 where the embossed bonding region R is formed. Therefore, the wing adhesive region 51 in which the embossed joint region R is formed becomes a second adhesive region having a lower adhesive strength than the wing adhesive region 51 (first adhesive region) in which the embossed joint region R is not formed.

Since the second adhesive region is provided in the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44, the adhesive force of the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44 is reduced to other wing adhesive regions. It becomes lower than the adhesive force of 51. Therefore, when gripping the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44, for example, when the wing portion is folded back, it is difficult for the adhesive material to adhere to the finger.

It should be noted that the second adhesive region is difficult to stick to the finger due to the formation of the uneven portion, but the adhesive material is also attached to the recess of the uneven portion. Therefore, by firmly pressing the wing portion in contact with the undergarment, the adhesive material attached to the recess can be adhered to the undergarment and the bonding strength can be ensured.

In the present embodiment, the embossed joint area constituting the second adhesive area is provided at the outer end of the wing part, but the embossed joined area is not provided at the outer end of the wing part. Also good. Moreover, as a structure of another 2nd adhesion area | region, the fabric weight of an adhesive material can be comprised lower than the other adhesion area | region corresponded to a 1st adhesion area | region.

Furthermore, in the present embodiment, the wing adhesive region is provided so as to coincide with the outer end portion of the wing portion. However, the wing adhesive region may be arranged on the inner side in the width direction than the outer end portion of the wing portion. Specifically, even when the wing adhesive region is arranged on the inner side in the width direction within a range of 3 mm or less from the outer end portion of the wing portion, the wing adhesive region is matched with the outer end portion of the wing portion. The same effect can be obtained.

(Second Embodiment)
Next, an absorbent article 1A according to the second embodiment will be described in detail with reference to FIGS. In the following description of the embodiment, a configuration different from that of the first embodiment will be described, and description of the same configuration will be omitted. FIG. 8 is a plan view of the absorbent article in a state where the individual package is opened, and FIG. 9 is a cross-sectional view schematically showing how the absorbent article shown in FIG. 8 is attached to the underwear.

In the absorbent article 1A according to the second embodiment, a perforation 81 as a tearing portion is formed in the crosslinked sheet 80. The perforation 81 is formed along the longitudinal direction L at the center in the width direction of the cross-linked sheet 80.

The bridging sheet 80 is provided with a first joint 90a joined to the wing protective sheet 61 of one wing 43 and a second joint 90b joined to the wing protective sheet 61 of one wing 43. It has been. The perforation 81 is formed so as to separate the first joint 90a and the second joint 90b. The perforation 81 of the present embodiment has a length in the width direction of 0.5 mm, and a cut portion of 1.5 mm is formed at intervals of 1.0 mm.

Next, with reference to FIG. 9, a description will be given of how the absorbent article 1A according to the second embodiment is attached to the underwear. FIG. 9 shows a mounting mode by a BB cross section shown in FIG. The state shown in FIG. 9A is a state where the absorbent article 1 individually packaged by the packaging sheet 70 is opened.

9A, when the packaging sheet 70 is separated from the absorbent article 1A, the main body protective sheet 62 is separated from the absorbent article 1 together with the packaging sheet 70, and the main body adhesive region 52 is opened. By bonding the main body adhesive region 52 to the skin contact surface side of the crotch portion of the underwear S, the state shown in FIG.

Next, the cross-linked sheet 80 is separated into two by a perforation 81. By separating the cross-linked sheet, the wing protective sheets of the pair of wing portions can be peeled separately. First, as shown in FIG. 9C, the wing protection sheet 61 of one wing portion 44 is peeled off to open the wing adhesive region 51 of the wing portion 44. And as shown in FIG.9 (d), one wing part 44 is mounted | worn with underwear.

Next, as shown in FIG. 9 (e), the wing protective sheet 61 of the other wing portion 43 is peeled off to open the wing adhesive region 51 of the wing portion 43. And as shown in FIG.9 (f), one wing part 44 is mounted | worn with underwear. In this way, the absorbent article 1A can be attached to the undergarment S.

The perforation of the cross-linked sheet 80 is farther from the wing adhesive region 51 than the outer end in the width direction of the cross-linked sheet 80. Therefore, by gripping the perforated portion of the crosslinked sheet 80, it is possible to further suppress the adhesive material in the wing adhesive region 51 from adhering to the finger or the like that grips the crosslinked sheet.

(Third embodiment)
Next, an absorbent article 1B according to a third embodiment will be described in detail with reference to FIG. 10 and FIG. FIG. 10 is a plan view of the absorbent article 1B in a state where the individual packaging is opened, and FIG. 11 is a cross-sectional view schematically showing how the absorbent article 1B is attached to the underwear.

The absorbent article 1B according to the third embodiment is shorter in the width direction of the

side sheets

41 and 42 than the absorbent article 1 of the first embodiment. The

outer end portions

41a and 42a in the width direction of the

side sheets

41 and 42 are arranged on the inner side in the width direction than the width direction outer end portion of the back sheet. Therefore, the width direction outer

side edge parts

43a and 44a of the

wing parts

43 and 44 are comprised only by the back surface sheet 20. FIG.

Since the wing portion in the third embodiment is formed with only the back sheet 20, the rigidity of the wing portion is relatively low. Since the wing part attached to the crotch part of the underwear is deformed by the movement of the wearer, the wing part may be peeled off from the underwear when the wing part does not follow the underwear.

Therefore, it is desirable that the back sheet 20 is made of a material having relatively high rigidity.

Cost can be reduced by configuring a part of the wing portions 43 and 44 (for example, the width direction outer

side end portions

43a and 44a) only by the back sheet 20. However, if a part of the

wing parts

43 and 44 is constituted by only the back sheet 20, the rigidity of the

wing parts

43 and 44 is lowered as compared with the case where the wing part is constituted by the side sheet and the back sheet.

For example, if the rigidity of the wing part is lowered, the wing part may be bent when the wing part is folded in the above-described method for manufacturing an absorbent article, or the wing part may be bent at an unintended location. Therefore, it is desirable that the back sheet 20 forming the wing portion is made of a material having relatively high rigidity.

Further, when a part of the wing part is constituted by only the back surface sheet, the area of the protective sheet adhered to the wing part may be increased to ensure rigidity by the protective sheet. In the above-described method for manufacturing an absorbent article, the protective sheet is folded in a state where the protective sheet is attached to the wing portion. Therefore, the rigidity of the wing portion during manufacturing can be increased by the protective sheet.

Moreover, the length extended from the absorptive main body 45 to the width direction outer side in the

wing parts

43 and 44 of the absorbent article 1B which concerns on 3rd Embodiment is longer than the absorbent article 1 of 1st Embodiment. A pair of

wing parts

43 and 44 are comprised so that it may overlap in the thickness direction of an absorbent article in the state folded by the non-skin contact surface side of the absorptive main body.

Next, with reference to FIG. 11, an aspect of mounting the absorbent article 1B according to the third embodiment on the underwear will be described. FIG. 11 shows a mounting manner by the CC cross section shown in FIG. The state shown in FIG. 11A is a state in which the main body adhesive region 52 is bonded to the skin contact surface side of the crotch portion of the underwear S and the cross-linked sheet 80 is removed.

From the state shown in FIG. 11 (a), the wing protection sheet 61 of one wing part 44 is peeled off, and the wing part 44 is attached to the underwear via the wing adhesive region 51, whereby the state shown in FIG. 11 (b). It becomes.

Next, as shown in FIG. 11 (c), the wing protection sheet 61 of the other wing portion 43 is peeled off, and the wing portion 43 is attached to the undergarment via the wing adhesive region 51. At this time, the wing adhesive region 51 of the wing portion 43 is adhered to the back sheet 20 of the wing portion 44 in a state where the wing adhesive region 51 is folded to the non-skin contact surface side of the absorbent article. That is, the wing adhesive region 51 joins the wing portion 43 and the wing portion 44 that face each other.

で Wings can be joined to each other with the underwear attached, and the absorbent article can be securely attached to the underwear. In addition, in the structure which joins wing parts by a wing adhesion area | region, it is desirable to comprise the back sheet 20 with which a wing adhesion area | region contacts with a film. For example, if the back sheet 20 is made of a nonwoven fabric, the wing adhesive region 51 is peeled off, and there is a possibility that the bonding between the wing portions cannot be maintained.

In addition, since the wings are joined with the absorbent article attached to the underwear, the absorbent article may be difficult to remove from the underwear. Therefore, it is easy to remove the wing portion from the underwear by subjecting the back sheet 20 to which the wing adhesive region 51 is in contact with the backside sheet 20 to silicon or by making a cut like a perforation in a part of the

wing portions

43 and 44. You may comprise as follows.

(Fourth embodiment)
Next, an absorbent article 1C according to the fourth embodiment will be described in detail with reference to FIG. FIG. 12 is a plan view of the absorbent article 1C. A wing adhesive region 51 provided with an adhesive material and a wing non-adhesive region 53 provided with no adhesive material are provided adjacent to the width direction outer

side end portions

43a and 44a of the

wing portions

43 and 44, respectively. Yes.

By providing the wing non-adhesive region 53, when the

wing portions

43 and 44 are folded back to the non-skin contact surface side of the underwear, the wing non-adhesive region 53 can be grasped and the

wing portions

43 and 44 folded back. It is possible to prevent the adhesive from adhering to the finger or the like. Since it is possible to prevent a finger or the like from directly touching the wing adhesive region 51, the

wing portions

43 and 44 can be attached to the underwear without reducing the bonding strength of the adhesive material in the wing adhesive region 51, and the bonding ability over a long period of time. Can be maintained.

Since the portion gripped with a finger or the like when the

wing portions

43 and 44 are attached to the underwear is the center of the wing portion, the wing non-adhesive region 53 is disposed across the center in the longitudinal direction of the wing portion. The

parts

43 and 44 are easy to hold.

In addition, the wing non-adhesion area | region 53 may be arrange | positioned at the front end and the rear end in the width direction outer

side edge part

43a, 44a of the

wing parts

43 and 44, and multiple may be arrange | positioned. As a preferable configuration of the wing non-adhesive region 53, it is desirable that the wing non-adhesive region 53 is disposed so as to straddle the width direction

outer end portions

43a and 44a of the wing portion, and the length in the longitudinal direction is 10 mm to 20 mm. This is because if the length in the longitudinal direction is 10 mm or less, it is difficult to grasp, and if the length in the longitudinal direction is 20 mm or more, sufficient adhesive strength of the wing portion cannot be secured.

As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

Further, the absorbent article may be a panty liner (origami sheet), an incontinence pad, etc. in addition to the sanitary napkin.

Furthermore, a second sheet may be provided between the top sheet and the absorber. The material and the manufacturing method can be used without particular limitation as long as they are employed in the above surface sheet, but in order to easily absorb body fluid from the surface sheet, a material having a higher density of the second sheet portion than the surface sheet should be used. Is preferred.

In addition, the absorbent article according to the present embodiment is configured such that a protective sheet is provided on each of the pair of wing portions. For example, the wing adhesive region of one wing portion is the outer end in the width direction of the wing portion. Alternatively, the wing adhesive region may be covered with the bridging sheet without providing the wing protection sheet only on one of the wing portions. In the configuration in which the wing adhesive region is provided on the inner side in the width direction than the outer end portion of the wing portion, since the adhesive does not protrude, the adhesive material is provided after the wing portion is folded back to the skin contact surface side. Can be configured.

In the absorbent article, it is sufficient that at least one wing adhesive region of the pair of wing adhesive regions is provided at the outer end portion of the wing portion, and the other wing adhesive region is wider than the outer end portion of the wing portion. It may be provided inside.

Moreover, the manufacturing method of the absorbent article which concerns on this Embodiment cut | disconnects the absorbent article which folded the wing part by the wing part folding process after cutting a wing protective sheet along the external shape of an absorbent article with a packaging sheet. However, the present invention is not limited to this configuration. For example, after cutting a wing protection sheet along the external shape of an absorbent article, you may arrange | position on a packaging sheet and fold a wing part with a packaging sheet.

Of course, the present invention includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

Note that the entire content of Japanese Patent Application No. 2011-167805 (filed on July 29, 2011) is incorporated herein by reference.

Since the wing adhesive region is provided at the outer end in the width direction of the wing portion, the outer end in the width direction of the wing portion can be adhered to the underwear in a state where the wing portion is wound around the underwear. Therefore, it is possible to provide an absorbent article that can suppress problems that the widthwise outer end of the wing portion is turned over, or the turned-up state further proceeds and the entire wing portion is peeled off from the underwear.

Also, since the protective sheet is bonded to the crosslinked sheet, the user can grip the crosslinked sheet and peel the protective sheet. Therefore, even if it is a case where a wing adhesion area | region is provided in the width direction outer side edge part of a wing part, the absorbent article which can peel a protective sheet from a wing part can be provided, suppressing adhesion with respect to a hand etc.

By providing a wing adhesive region at the outer end of the wing, the rigidity of the outer end of the wing can be increased. Therefore, the absorbent article which prevents the wing sticking and can prevent the wing adhesive areas from sticking to each other or the wing adhesive area from sticking to places other than underwear (for example, the non-skin contact surface of the absorbent article). Can provide.

1, 1A, 1B, 1C ... absorbent article, 10 ... top sheet, 20 ... back sheet, 22, 23 ... pressing part, 30 ... absorbent, 35 ... pressing part, 41, 42 ... side seed, 43, 44 ... Wing part, 43a, 44a ... Outer end part 45 ... Absorbent body, 50 ... Adhesive area, 51 ... Wing adhesive area, 52 ... Main body adhesive area, 53 ... Wing non-adhesive area, 60 ... Protective sheet, 61 ... Wing protective sheet 62 ... Main body protective sheet, 70 ... packaging sheet, 71 ... facing surface, 72 ... non-facing surface, 75 ... adhesive tape, 80 ... crosslinked sheet, 81 ... perforation, 90 ... joint

Claims

An absorbent main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body provided between the top sheet and the back sheet, and more absorbent articles than the absorbent main body An absorbent article having a pair of wing parts extending to both outer sides in the width direction,
The wing part is folded back on the skin contact surface of the absorbent main body,
At the outer end in the width direction of the non-skin contact surface of at least one wing portion of the pair of wing portions, a wing adhesive region with an adhesive material is provided,
In the wing adhesive region, a pair of protective sheets that respectively cover the wing adhesive region are temporarily attached,
An absorbent article in which a cross-linked sheet disposed across both protective sheets is bonded to the pair of protective sheets.
A wing non-adhesive region to which the adhesive material is not applied is disposed adjacent to the wing adhesive region at the outer end in the width direction of at least one of the pair of wing portions. The absorbent article according to claim 1.
The absorbent article according to claim 2, wherein the wing non-adhesive region is disposed across the center of the wing portion in the longitudinal direction.
The cross-linked sheet has a first joint joined to one of the pair of protective sheets and a second joint joined to the other protective sheet,
The tearing part which isolate | separates the said 1st junction part and the said 2nd junction part is formed in the center in the said width direction of the said bridge | crosslinking sheet along the longitudinal direction of the said absorbent article. Item 4. The absorbent article according to any one of Items 3.
The absorbent article according to any one of claims 1 to 4, wherein the wing adhesive region adheres the wing portions facing each other in a state of being folded to the non-skin contact surface side of the absorbent article. .
The wing adhesive region has a first adhesive region and a second adhesive region in which the adhesive force of the adhesive material is lower than that of the first adhesive region,
The absorptive article according to any one of claims 1 to 5 in which said 2nd adhesion field is provided in said width direction outside end part of said wing part.