KR20130038209A - Absorbent article - Google Patents

Abstract

The absorbent article 1 includes an absorber 30, a wing portion 43 and a flap portion 60 extending outward in a width direction than the absorber, and a cut portion 45 that is cut off inward in the width direction between the wing portion and the flap portion. Has The flap portion and the convex portion are concave in the thickness direction of the flap portion, and a concave portion 70 extending from the concave portion to the rear side is formed, and the non-skin contact of the underwear is performed while the wing portion is folded back to the skin non-contact surface side. It is comprised so that the skin contact surface side of a flap part may face a wearer by returning a flap part from a surface side to a starting point.

Description

[0001] ABSORBENT ARTICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to absorbent articles such as sanitary napkins, and more particularly to absorbent articles having wings that extend outward in the width direction than the absorbent body and are folded back to the skin non-contact surface side.

Patent Document 1 describes a sanitary napkin having a liquid permeable surface sheet, a liquid impermeable back sheet, and an absorbent body disposed between the surface sheet and the back sheet, and having a wing portion extending outward in the width direction than the absorber. have. When attaching the sanitary napkin thus constructed to the undergarment, while making the crotch part of the undergarment dry by bringing the back sheet of the absorber back side into contact with the crotch portion of the undergarment and folding the wing back to the skin non-contact surface side of the undergarment, Sanitary napkins can be worn on underwear.

Patent Document 1: Japanese Patent Application Laid-Open No. 2011-156034 (Fig. 5, paragraph 0004, etc.)

However, the sanitary napkin described above has the following problems.

When the sanitary napkin described in Patent Document 1 is attached to the undergarment, the non-contact surface side of the undergarment is folded back from the fold line located near the inner end in the width direction of the wing portion. This fold line extends along the crotch sides of the underwear and extends from the front edge to the rear edge in the longitudinal direction of the wing. Therefore, the edge part of a fold line is located in the front edge and the rear edge of a wing part, and distortion occurs. This twisted portion tends to be hardened by the folding line. There was a fear that irritation to the skin was caused by the contact of the warp portion of the wing edge.

This invention is made | formed in view of the above-mentioned subject, and an object of this invention is to provide the absorbent article which can reduce the irritation by the fold line formed in the state which folded back to the skin non-contact surface side of the underwear of a wing part.

In order to solve the above-mentioned subject, the absorbent article which concerns on this invention is a liquid in the absorbent article which has a front-back direction (length direction L) and the width direction (width direction W) orthogonal to the said front-back direction. A permeable surface sheet (surface sheet 10), a liquid impermeable back sheet (back sheet 20), and an absorber (absorber 30) disposed between the surface sheet and the back sheet, On the outer side in the width direction of the absorber, a wing portion (wing portion 43) which is folded back to the skin non-contact surface side of the wearer's underwear and a flap portion (flap portion 60) disposed behind the wing portion are formed. Between the wing part and the said flap part, the narrow part which cuts inward in width direction rather than the largest width position which is located in the most width direction outer side in the said wing part, and the largest width position which is located most outward in the width direction from the said flap part (shallow part 45) )) Is formed, The flap portion and the constriction portion are formed with a concave portion (concave portion 70) which is concave in the thickness direction of the flap portion and extends backward from the constriction portion. On the non-skin-contacting surface side of the underwear, the wing portion is formed on the outer side in the width direction than the fold line formed on the wing in the state where the wing is folded back on the non-contact skin side, and the wing is folded on the non-skin-contacting surface side. The flap portion is configured to be folded so that the skin contact surface side of the flap portion is disposed to face the wearer by returning the recess to the starting point.

1 is a plan view seen from the skin contacting surface side of the absorbent article according to the first embodiment.
FIG. 2 is a rear view of the absorbent article shown in FIG. 1. FIG.
It is a schematic cross section of the AA 'cross section shown in FIG.
FIG. 4 is a schematic diagram of a state in which the absorbent article shown in FIG. 1 is mounted on an underwear. FIG.
FIG. 5: is a schematic cross section of the BB 'cross section shown in FIG.

With reference to FIGS. 1-3, the absorbent article 1 which concerns on embodiment is demonstrated. 1 is a plan view of an absorbent article, and FIG. 2 is a rear view of the absorbent article. 3 is a cross-sectional view along the line A-A 'shown in FIG. The absorbent article 1 which concerns on this embodiment is a sanitary napkin, for example.

The absorbent article 1 has a surface sheet 10 in contact with the wearer's skin, a liquid impermeable back sheet 20 that does not penetrate the liquid, and an absorber 30. The absorber 30 is disposed between the front sheet 10 and the back sheet 20. Therefore, the absorber 30 is shown with the broken line in FIG. 1 and FIG. The absorber 30 is arrange | positioned at the center part in the longitudinal direction L and the width direction W along the front-back direction of the absorbent article 1.

The absorbent article 1 is provided with the wing part 43 arrange | positioned at the width direction outer side rather than the absorber 30, and the flap part 60 arrange | positioned at the width direction outer side rather than the absorber 30 behind the wing part 43. As shown in FIG. .

The wing portion 43 is configured to be folded back to the skin non-contact surface side of the wearer's underwear so that the underwear is rolled up to fix the absorbent article to the underwear. The wing part 43 extends in the width direction outer side in the excretory contact area | region of the absorber 30. As shown in FIG.

The front end 43F and rear end 43R of the wing part 43 are located in the width direction inner side rather than the wing maximum width position 43WM located in the width direction outer side in the wing part 43. As shown in FIG. The front end 43F of the wing part 43 is located inside the width direction rather than the rear end 43R of the wing part 43. Therefore, starting from the fold line through the front end portion 43F of the wing portion 43, the front end portion 43F of the wing portion 43 in the state where the wing portion 43 is folded back to the skin non-contact surface side in the longitudinal direction. ), The width at which the rear end portion 43R of the wing portion 43 is rolled up to the skin non-contact surface side of the underwear becomes longer.

Between the wing part 43 and the flap part 60, the wing largest width position 43WM located in the outermost width direction in the wing part 43, and the flap maximum located in the outermost width direction in the flap part 60 The narrowing part 45 which cuts in the width direction inner side rather than the width position 60WM is provided.

In FIG. 1, the area | region RA of the wing part 43 in the longitudinal direction L, the area | region RB of the flap part 60 in the longitudinal direction L, and the cutoff part 45 in the longitudinal direction are shown in FIG. The area RC of is shown and shown. The cutoff portion 45 in the present embodiment is a region including the narrow width position 45WN located at the innermost width direction between the wing portion 43 and the flap portion 60. The narrowing portion 45 may be a region near the narrow width position 45WN, and can be, for example, an area of 5 mm in the front-back direction at the narrow width position 45WN.

With the absorbent article attached to the undergarment, the wing portion in front of the convex portion 45 is folded back to the skin non-contact surface side of the undergarment, and the flap portion 60 behind the convex portion 45 faces the wearer's body. Is placed. Therefore, the edge part of the fold | fold line at the time of returning a wing part is located in a cut | disconnected part, and distortion occurs.

The flap portion 60 extends in the width direction outward of the absorber 30 and extends rearward from the rear end of the cut portion 45. The front end portion of the flap portion 60 is the rear end portion of the cutoff portion, and the rear end portion of the flap portion 60 is a portion that is cut inward from the region before and after the rear end portion of the absorbent article. The rear end part of the flap part in this embodiment corresponds with the rear end part 70R of the recessed part 70 mentioned later. The rear end portion of the flap portion 60 may coincide with the rear end portion of the absorbent article or may not coincide with the rear end portion of the absorbent article.

The surface sheet 10 is a liquid permeable sheet which permeates a liquid such as a body fluid. The surface sheet 10 covers at least the surface of the absorber 30. The surface sheet 10 is not particularly limited as long as it is a sheet-like material having a structure that transmits liquid, such as a nonwoven fabric, a woven fabric, a porous plastic sheet, and a mesh sheet. As a raw material of a woven fabric or a nonwoven fabric, any of natural fiber and chemical fiber can be used.

The back sheet 20 has a length substantially equal to the length of the front sheet 10. As the back sheet 20, a sheet in which a breathable resin film is bonded to a nonwoven fabric such as a laminate nonwoven fabric mainly composed of a polyethylene sheet, polypropylene, or the like, a breathable resin film, a spun bond, or a spun lace can be used. It is preferable that the back sheet 20 is made of a material having a degree of flexibility that does not cause discomfort during wearing. It is preferable that the back sheet 20 is liquid impermeable and moisture-permeable, and it can be comprised by the microporous sheet which carried out the extending | stretching process of melt-kneading an inorganic filler with olefin resins, such as polyethylene and a polypropylene, for example.

The absorber 30 contains hydrophilic fiber and pulp. The absorber 30 is formed of a material capable of absorbing body fluids such as menstrual blood. The absorber 30 may be formed by laminating hydrophilic fibers or powder by an airlaid method, or may be an airlaid sheet obtained by molding a hydrophilic fiber or powder into a sheet shape by an airlaid method, or a tissue (for example, a unit weight of 15 g) / M 2) may be formed by placing a ground pulp mixed with a superabsorbent polymer and surrounding it with a tissue.

The absorber 30 which concerns on this embodiment is comprised by surrounding the pulp which laminated | stacked linear pulp, synthetic pulp, etc. in about 100-300 g / m <2> of basis weights with the protective paper (not shown). In addition, the absorber 30 may have a substantially uniform thickness on its entire surface or may have a non-uniform thickness. The protective paper is for maintaining the shape of the pulp, and for example, crepe paper or tissue paper can be used.

The absorber 30 is a shape extending in the front-rear direction, and is about a step smaller than the back sheet 20. The length of the width direction W of the absorber 30 corresponds to the crotch space of an adult woman, and is 50-80 mm in general. The absorber 30 is adhered to the back sheet 20 by an adhesive such as hot melt. In addition, in this embodiment, the absorber 30 and the surface sheet 10 are adhere | attached with the hot melt adhesive agent.

The absorber 30 is provided so as to include at least the center of the excretory contact area that the wearer's excretory contact contacts. The center of the excretory contact area coincides with the center of the longitudinal direction and the width direction of the area where the excretory port of the wearer contacts. For example, in the absorbent article having the wing portion, the center in the longitudinal direction of the wing portion is the center in the longitudinal direction of the excretory contact region. Moreover, in the absorbent article which does not have a wing part, the position with the shortest length dimension of the width direction of an absorber becomes a center of the longitudinal direction of an excretory contact area | region. The excretory outlet contact region is included in an area in contact with the crotch portion of the wearer and is located between both legs of the wearer.

Moreover, the absorbent article 1 is provided with the side sheet 41 provided in the outer side of the absorber 30 in the width direction W. As shown in FIG. The side sheet 41 is provided in the skin contact surface of the flap part 60 and the wing part 43. As shown in FIG.

The side sheets 41 are disposed on both sides of the surface sheet 10. Like the surface sheet 10, the side sheet 41 is disposed on the skin contacting surface side rather than the absorber 30, and constitutes a part of the surface sheet in the present invention. The side sheet 41 can be selected from the same material as the surface sheet 10. However, in order to prevent the acupuncture points from flowing over the side sheet 41 to the outside of the absorbent article 1, it is preferable to have hydrophobicity or water repellency. The side sheet 41 covers a part of the side edge of the absorber 30, the wing part 43, and the flap part 60.

The side sheet 41 which concerns on this embodiment is comprised by the air through nonwoven fabric. Since the air through nonwoven fabric is soft and feels good, the texture of the flap portion can be improved. When arrange | positioning the flap part 60 along a body, a feeling of wearing can be improved more by improving the texture of a flap part.

In addition, in the wing part 43 and the flap part 60, the intermediate sheet 35 is provided between the side sheet 41 and the back sheet 20. As shown in FIG. The outer end part in the width direction of the intermediate sheet 35 is disposed in the width direction outer side than the outer end part in the width direction of the absorber 30. In addition, by adhering the intermediate sheet 35 and the absorbent body 30 through an adhesive or the like, the absorbent body 30 and the intermediate sheet 35 can be integrated to produce a visual effect such that the area of the absorbent body 30 can be widened. have.

The intermediate sheet 35 is disposed in a part of the wing part 43, a part of the flap part 60, and the cutoff part 45. As described above, the narrowing portion is likely to be warped in a state where the wing portion is folded back to the skin non-contact surface side of the underwear. By arrange | positioning an intermediate | middle sheet in the part which this distortion generate | occur | produces, the flap part 60 can be suppressed from becoming hard by a twist and can reduce the irritation to skin.

The intermediate sheet 35 is made of an air through nonwoven fabric. The air through nonwoven fabric emits hot air to the nonwoven fabric and recovers its volume by penetrating the blown hot air, thereby providing a soft and soft touch. By forming the intermediate sheet 35 by an air through nonwoven fabric, when the flap part 60 is arrange | positioned along a body, a mounting feeling can be improved more.

By providing the intermediate sheet, a thickness difference and a rigidity difference are formed at the boundary between the region where the intermediate sheet is disposed and the region where the intermediate sheet is not disposed. For example, the flap portion 60 is easily deformed from the end of the intermediate sheet.

Further, the absorbent article is individually packaged by a film or a nonwoven fabric in a state of being folded at a fold line along the length direction or a fold line along the width direction. In the absorbent article folded as described above, a folding line at the time of being folded may remain, and it may be difficult to develop the absorbent article in a planar shape.

However, by constituting the intermediate sheet 35 with, for example, an air through nonwoven fabric having a relatively high degree of freedom in fibers, the fold line becomes difficult to remain and it is possible to easily mount it. From this point of view, it is preferable that the intermediate sheet 35 has a fold line formed when the absorbent article is folded.

The intermediate sheet 35 is intermittently joined at least with the side sheet 41 and the adhesive agent. The intermediate sheet according to the present embodiment is adhered to the front sheet 10 and the back sheet 20 through a hot melt adhesive disposed in a spiral shape. By intermittently joining the intermediate sheet 35 and the surface sheet 10 and the like, the intermediate sheet 35 can be moved relative to the surface sheet, and the smooth texture can be maintained.

In the absorbent article 1, peripheral parts of the surface sheet 10, the side sheet 41, the intermediate sheet 35, and the back sheet 20 are joined, and the absorber 30 is sealed internally. As a joining method of the front sheet 10 and the back sheet 20, it is possible to combine any one or multiple of heat embossing, an ultrasonic wave, or a hot melt adhesive agent.

In the back sheet 20, an adhesive part coated with an adhesive in a plurality of areas is provided on the surface in contact with the underwear (see Fig. 2). An adhesive part is provided in the back surface side of an absorber, is provided in the center adhesive part 51 for fixing the absorbent article 1 to the crotch part of underwear, and it is provided in the back surface side of the wing part 43, and the crotch part is rolled up and a wing part ( It is provided on the back side of the flap part 60, and the flap adhesion part 53 for fixing in the state which opened the flap part with respect to the back length of underwear.

In the state before use, the adhesive contact | connects the peeling sheet which is not shown in figure. The release sheet prevents the adhesive from deteriorating before use. And a peeling sheet peels by a wearer at the time of use.

Moreover, in the absorbent article which does not have a peeling sheet, you may be comprised so that an adhesive may deteriorate before use by the packaging sheet which packages an absorbent article individually. When an adhesive agent and a packaging sheet contact, it is preferable to perform the process which enables peeling of an adhesive agent on the surface of a packaging sheet, without reducing the adhesive force of an adhesive agent.

In addition, the wing adhesion part 52 and the flap adhesion part 53 are provided in the area | region in which the intermediate | middle sheet 35 is arrange | positioned. By providing the intermediate sheet 35, the back sheet 20 can be reinforced. Accordingly, even when the back sheet 20 is made of a low unit weight material, the strength of the back sheet becomes easy to be maintained, and the back sheet is prevented from being torn when the absorbent article 1 is peeled from the underwear after use. can do.

In the absorbent article 1, the crimping part 80 which compressed the surface sheet 10 and the absorber 30 in the thickness direction is formed. Moreover, the crimping | compression-bonding part 80 should just be formed by crimping | bonding the surface sheet 10 and the absorber 30 in the thickness direction T at least, and various structures can be employ | adopted. For example, it can be formed by press working or embossing, and the shape may be a lattice network or a honeycomb shape.

The flap part 60 is provided with the some flap cut off part in which the length of the width direction was shorter than the width direction length of the front-back area | region. The flap cutting part has the 1st flap cutting part 61 located in the front side, and the 2nd flap cutting part 62 located in the rear side.

The flap part 60 is behind the 1st flap part 63 located in the front side rather than the 1st flap cut part 61, and the 1st flap cut part 61, and is compared with the 2nd flap cut part 62. FIG. It has the 2nd flap part 64 located in front, and the 3rd flap part 65 located behind back of the 2nd flap cutting part 62. As shown in FIG.

The first flap portion 63 is an area from the rear end portion 45R to the first flap blocking portion 61 of the cut portion 45, and extends outward in the width direction as it goes rearward from the rear end portion 45R. do. The 1st largest width position (outer edge part) 63WM located in the most width direction outer side in the 1st flap part 63 is located in the width direction outer side rather than the 1st flap blocking part 61. As shown in FIG. The first maximum width position 63WM is located behind the center in the front-rear direction of the first flap portion 63.

The 2nd flap part 64 is an area | region from the 1st flap cut part 61 which becomes a rear end part of the 1st flap part 63 to the 2nd flap cut part 62, and the 1st flap cut part 61 ) Extends outward in the width direction as it goes rearward. The 2nd largest width position (outer edge part) 64WM located in the width direction outer side in the 2nd flap part 64 is located in the width direction outer side rather than the 2nd flap cutting part 62. As shown in FIG. The second largest width position 64WM is located behind the center in the front-rear direction of the second flap portion 64.

The 3rd flap part 65 is an area | region from the 2nd flap cut part 62 used as the rear end part of the 2nd flap part 64 to the back end part of the flap part 60, and the 2nd flap cut part 62 ) Extends outward in the width direction as it goes rearward. In the 3rd flap part 65, the 3rd largest width position (outer edge part) 65WM located in the outermost width direction is located in the width direction outer side rather than the 2nd flap cut off part 62. As shown in FIG. The third largest width position 65WM is located behind the center in the front-rear direction of the third flap portion 65. The third maximum width position 65WM is the maximum width position of the flap portion.

In the flap part 60 and the constriction part 45, the recessed part 70 which becomes concave in the thickness direction T is formed. As for the recessed part 70, as shown in FIG. 3, the side sheet 41, the intermediate | middle sheet 35, and the back sheet 20 are compressed in the thickness direction toward the back sheet side from the front sheet side. In this embodiment, it is compressed toward the back sheet side from the side sheet 41 side which comprises a surface sheet. By compressing from the front sheet side toward the back sheet side to form the concave portion 70, it is possible to suppress the tearing of the back sheet made of a film when forming the concave portion.

The recess extends backward from the narrow width position 45WN of the narrow portion. The front side end part 70F of the recessed part 70 is the narrow width position 45WN of a narrow part, and the rear end part 70R of the recessed part is a rear end part of a flap part. Moreover, the front end part of a recessed part may just be provided in the narrow part, and may correspond with the narrow width position, and does not need to match. The rear end portion of the recess portion may or may not coincide with the rear end portion of the flap portion.

The recessed part 70 becomes a starting point by which a flap part is folded back in the non-skin-contacting surface side of underwear, in the state in which the wing part 43 was folded back in the non-skin-contacting surface side of underwear. When the flap part 60 is folded back from the recessed part 70, the skin contact surface side in the flap part of the width direction outer side rather than the recessed part is arrange | positioned facing the wearer. Since the recessed part 70 is compressed toward the back sheet side from the front sheet side, it is recessed from the front sheet side to the back sheet side. Therefore, the flap part 60 tends to be folded back from the recessed part 70.

Moreover, the recessed part 70 extends toward the width direction inner side as it goes back to the back part 45. As shown in FIG. According to this recessed part, the wing part 43 is folded back, and when the flap part is folded back from the recessed part, the area arrange | positioned at the skin non-contact surface side becomes small.

The recesses 70 are arranged in pairs with the absorber 30 interposed therebetween. The distance between a pair of recessed parts is shortest in front than the maximum width position of a flap part. The recessed part 70 extends toward the outer side in the width direction toward the rear side after the distance between the pair of recessed parts is shortened. Therefore, the flap portion can be easily enlarged in the rear region.

In addition, in the absorbent article to be packaged separately, it is preferable to form a recess so as to cover the fold line formed when the absorbent article is folded. Since the recessed part 70 is provided across the fold line formed when the absorbent article is folded, when the flap part is folded from the recessed part 70, the foldable line of the absorbent article is formed along the recessed part 70. Deform to extend. Therefore, as a starting point of the deformation | transformation of the flap part 60, a recess becomes easy to function stably.

Moreover, the flap recessed part by which the side sheet 41, the intermediate | middle sheet 35, and the back sheet 20 were compressed in the thickness direction is formed in the flap part 60. As shown in FIG. The flap recessed portion branches from the recessed portion 70 and reaches the first flap recessed portion 61 and branches from the recessed portion 70, and the second flap recessed portion ( A branch of the second flap recess 73 reaching the 62 and the recess 70, and near the third maximum width position 65WM located outside the width direction of the third flap 65, respectively. It has the third flap recess 74.

The 1st flap recessed part 72, the 2nd flap recessed part 73, and the 3rd flap recessed part 74 are comprised so that it may extend from the width direction inner side to the width direction outer side as it goes back. By forming the flap recesses so as to extend from the inner side in the width direction to the outer side in the width direction toward the rear side, since the flap recesses follow the direction in which the force is applied, the flap recesses become the starting point of folding and the flap portions are naturally folded. Therefore, the flap part 60 becomes easy to fit neither body nor underwear. Accordingly, disordered wrinkles are less likely to occur in the flap portion, deformation without discomfort can be achieved, and a fresh feeling of wearing can be obtained.

4 is a diagram schematically showing a state in which the absorbent article 1 is attached to the undergarment. FIG. 5 is a cross-sectional view taken along the line BB ′ shown in FIG. 4. When the wing portion of the absorbent article is folded back to the skin non-contact surface side of the underwear, the wing portion of the absorbent article is folded back from the width direction outer side than the absorber. At this time, the fold line FL formed in a wing part is located in the width direction inner side rather than a recessed part and the constriction part in the state before returning, and extends along the side part of an absorber in the longitudinal direction.

Since the cutout portion is disposed outside the width direction than the fold line FL formed on the wing portion in a state where the wing portion is folded back to the skin non-contact surface side, the cutoff portion that becomes the attached portion of the wing portion in the state where the wing portion is folded is underwear. It is arrange | positioned at the skin non-contact surface side, and it can prevent that a blocking part directly contacts skin. Therefore, it is possible to suppress the warp portion generated in the cutout portion from coming into direct contact with the skin, thereby reducing the irritation to the skin.

Moreover, since the flap part is folded back through the recessed part, the area | region of the width direction outer side rather than the recessed part in a flap part can be arrange | positioned facing a wearer. Therefore, it can suppress the magnetic pole by the edge part of a wing part contacting, arrange | positioning a flap part facing a wearer.

Next, a part of the manufacturing method of the absorbent article 1 which concerns on 1st Embodiment is demonstrated. In addition, about the method which is not demonstrated, an existing method can be used. The manufacturing method of an absorbent article performs a surface sheet formation process as a 1st step. Next, as a 2nd step, a surface sheet bonding process is performed. Specifically, the surface sheet 10 and the side sheet 41 are adhered by, for example, heat welding.

As a third step, an absorber molding step is performed. Specifically, the absorbent body 30 is formed by molding the pulp serving as the material of the absorbent body by the forming drum. In addition, the order of the manufacturing process of the surface sheet of a 1st step and a 2nd step, and the absorber shaping | molding process of a 3rd step may be reverse order.

In a fourth step, the bonding step is performed. Specifically, the bonding step of joining the absorber molded in the third step, the surface sheet and the side sheet joined in the second step is performed.

In a fifth step, a first crimping process is performed. Specifically, the absorber 30 and the surface sheet 10 are compressed in the thickness direction to form the crimping portion 80. In a sixth step, a back sheet bonding process is performed. Specifically, the absorber, the surface sheet and the like on which the crimping portion is formed are bonded to the back sheet.

As a seventh step, a second crimping step is performed. Specifically, the side sheet 41, the intermediate sheet 35, and the back sheet 20 are further compressed in the thickness direction to form the recesses 70. After the step, a process of applying the adhesive is provided. By the above process, the absorbent article which concerns on this embodiment can be manufactured.

In the state where the absorbent article is attached to the undergarment, the wing portion forward of the undercut portion is folded back to the skin non-contact surface side, and the flap portion 60 behind the undercut portion 45 is disposed facing the wearer's body. do. Therefore, the edge part of the fold line at the time of returning a wing part is located in a cut | disconnected part, and distortion occurs.

Since the fold line formed in the state where the wing portion is folded back on the skin non-contact surface side of the underwear is also arranged at the outer side in the width direction, the end of the fold line is disposed on the skin non-contact surface side of the underwear. Therefore, it is possible to prevent the warped portion of the edge of the wing portion from directly contacting the skin and to reduce the irritation to the skin due to the fold line.

In addition, since the flap portion is folded back through the concave portion, a region outside in the width direction than the concave portion in the flap portion can be disposed facing the wearer. Therefore, it can suppress the magnetic pole by the edge part of a wing part contacting, arrange | positioning a flap part facing a wearer.

As mentioned above, although the content of this invention was disclosed through embodiment of this invention, description and drawing which form a part of this indication should not be understood that it limits this invention. From this disclosure, various alternative embodiments, embodiments and operational techniques will become apparent to those skilled in the art.

In this embodiment, the inner end part in the width direction of an intermediate sheet is arrange | positioned inside the width direction rather than the outer end part in the width direction of an absorber, and the intermediate sheet and an absorber overlap in the thickness direction. However, for example, the inner end portion in the width direction of the intermediate sheet is disposed outside the width direction than the outer end portion in the width direction of the absorber, and may be configured so that the intermediate sheet and the absorber do not overlap in the thickness direction.

When the intermediate sheet and the absorber are not overlapped in the thickness direction, the area between the absorber and the intermediate sheet is low in rigidity and is easy to deform compared to the area around the absorber because the intermediate sheet and the absorbent body are not disposed. Therefore, when the wing portion is folded back to the skin non-contact surface side of the underwear, the area between the intermediate sheet and the absorbent body is deformed, and it is possible to suppress the formation of wrinkles and fold lines caused by warping on the flap portion itself.

For example, the rear end part of the recessed part may not necessarily be located in the rear end part of a flap part, and may be twisted with the rear end part of a flap part. In addition, the contact surface with respect to the wearer of a flap part does not necessarily need to be comprised by the air-through nonwoven fabric. In addition, the intermediate sheet may not necessarily be constituted by an air through nonwoven fabric, and in addition, the intermediate sheet may not necessarily be provided.

Although the recessed part which concerns on this embodiment is linear, it may be comprised, for example by the some dot-shaped assembly arrange | positioned intermittently. In addition, although the recessed part which concerns on this embodiment is compressed and formed in the back sheet side from the side sheet side which comprises a surface sheet, you may be compressed and formed in the side sheet side from the back sheet side, for example.

The entire contents of Japanese Patent Application No. 2011-217600 (filed September 30, 2011) are incorporated herein by reference.

The absorbent article which can reduce the irritation by the fold line formed in the state which folded back to the skin non-contact surface side of the underwear of a wing part can be provided.

L: longitudinal direction
S: Underwear
T: thickness direction
W: width direction
1: absorbent article
10: surface sheet
20: back sheet
30: absorber
35: middle sheet
41: side sheet
43: wing section
43F: front end
43R, 45R: rear end
43WM: Maximum wing width position
45: strict part
45WN: narrow width position
51: center adhesive
52: wing adhesive
53: flap adhesive portion
60: flap part
60WM: flap maximum width position
61: first flap abutment
62: second flap narrowing portion
63: first flap portion
63WM: first maximum width position
64: second flap portion
64WM: 2nd largest width position
65: third flap portion
65WM: 3rd largest width position
70: recess
70F: front end
70R: rear end
71: first recessed portion
72: first flap recess
73: second flap recess
74: third flap recess
80: crimping portion

Claims (6)

In the absorbent article which has a front-back direction and the width direction orthogonal to the said front-back direction,
With liquid permeable surface sheet,
With liquid impermeable back sheet,
An absorbent body disposed between the surface sheet and the back sheet,
In the width direction outer side of the said absorber, the wing part which returns to the skin non-contact surface side of a wearer's underwear, and the flap part arrange | positioned behind the said wing part are formed,
Between the said wing part and the said flap part, the width | variety which cuts inward in width direction rather than the largest width position located in the width direction outermost at the said wing part, and the largest width position located at the outermost width direction from the said flap part is formed,
In the said flap part and the said narrow part, the recessed part which becomes concave in the thickness direction of the said flap part, and extends back from the said narrow part is formed,
The said recessed part and the said narrow part are formed in the width direction outer side rather than the fold line formed in the said wing part in the state in which the said wing part was folded back to the said skin non-contact surface side,
The flap part is folded back to the starting point from the skin non-contact surface side of the underwear while the wing portion is folded back to the skin non-contact surface side, so that the skin contact surface side of the flap portion is disposed to face the wearer. Absorbent article, characterized in that. The absorbent article as set forth in claim 1, wherein the concave portion extends inward in the width direction as it goes rearward from the constriction portion. The absorbent article according to claim 1 or 2, wherein the front end portion of the wing portion is located inward in the width direction than the rear end portion of the wing portion. The absorbent article according to claim 1 or 2, wherein the concave portion is formed by compressing the front sheet and the back sheet from the front sheet side to the back sheet side in the thickness direction. The intermediate sheet according to claim 1 or 2, further comprising an intermediate sheet disposed between the surface sheet and the back sheet.
The said intermediate sheet is arrange | positioned at least in the said narrow part, The absorbent article characterized by the above-mentioned. The said intermediate sheet is arrange | positioned in the area | region in which the said recessed part was formed at least among the said flap parts,
The said recessed part is formed by compressing the said front sheet, the said back sheet, and the said intermediate sheet to the said thickness direction, The absorbent article characterized by the above-mentioned.

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