JP5185882B2 - Absorbent articles - Google Patents

Description

  The present invention relates to a disposable absorbent article to be attached to a region including a wearer's crotch.

  In the absorbent article described in Patent Document 1, the absorbent body (7) has a substantially hourglass shape when viewed from the thickness direction, and a liquid-permeable surface sheet at the center on the skin surface side of the absorbent body (7). The body (5) is arranged, and liquid-impervious flaps (14) are arranged on the left and right sides thereof. A liquid-impermeable back sheet body (6) is disposed on the outer surface side of the absorbent body (7). In the front and rear portions of the absorbent article in which the width in the left-right direction of the absorbent body (7) is expanded, the back sheet body (6) is folded back to the skin surface side at the left and right edges of the absorbent body (7). The width in the left-right direction of the absorbent body (7) and the width in the left-right direction of the absorbent article are substantially the same.

  On the other hand, in this type of absorbent article, when being removed from the wearer, the removal operation is often performed by manually holding the left or right edge of the absorbent article on the front side or rear side (particularly the rear side). .

  For this reason, in the absorbent article described in Patent Document 1 described above, when the left or right edge of the front or rear side of the absorbent article is sandwiched by hand during the removal operation, a part of the absorbent body (7) is used. The absorbent article (7) is pressed by hand by sandwiching the absorbent article as if sandwiched. At the time of removal, the absorber (7) often contains a large amount of excretory fluid such as urine. For this reason, the excretion liquid contained in the absorptivity (7) may overflow from the absorbent body (7) due to manual pressing, and the overflowed excretion liquid may leak out of the absorbent article.

JP 2006-167197 A

  Therefore, the problem to be solved by the present invention is to avoid the overflow of excretion fluid such as urine contained in the absorbent core during the removal, and the right and left edges of the front or rear part of the absorbent article. It is providing the absorbent article which can pinch | interpose a part with a hand and can perform a removal operation | work smoothly.

  In order to solve the above-mentioned problem, in the invention of claim 1, an absorbent article to be attached to a region including the wearer's crotch, the absorbent core comprising a liquid-absorbing material, and liquid impervious A back sheet that is disposed on the outer surface side of the absorbent core and folded back so that the folded portions on the left and right sides overlap the left and right sides of the absorbent core from the skin surface side, and has liquid permeability The surface sheet disposed on the skin surface side of the absorbent core, and liquid impermeability, disposed on both the left and right sides of the skin surface side of the absorbent core, the bonding area of the outer surface side surface, The left and right side sheets joined to the right and left side edges of the back sheet and the right and left side edges of the back sheet folded, the back sheet facing the left and right side folded parts and the folded part Facing part of the back sheet Formed on the left and right side edges of the absorbent core, and left and right side flap portions projecting outward in the left-right direction, the left and right side flap portions at least at the left and right edge portions of the absorbent article It is provided in the front part or the rear part.

  Moreover, in invention of Claim 2, in the absorbent article which concerns on invention of Claim 1, the said back sheet is a nonwoven fabric sheet and the liquid-impermeable resin film bonded together on the skin surface side of the said nonwoven fabric sheet. The left and right side flap portions are at least the front side or the rear side portion of the absorbent article, and the left and right side seats exceed the left and right side outer edges of the left and right side seats. The left and right side sheets are directed from the side end of the side sheet toward the inner side in the left-right direction in the portion where the protruding parts are provided in the front-rear direction of the absorbent article. And a non-joining region that is not joined to the back sheet.

  According to a third aspect of the present invention, in the absorbent article according to the second aspect of the present invention, the absorbent core is formed between a widened portion before and after the width along the left-right direction and a widened portion before and after the widened portion. And the protruding portion of the left and right side flap portions is at least one of the front and back widened portions of the absorbent core. The widened portion is provided on the outer side in the left-right direction.

  According to a fourth aspect of the present invention, in the absorbent article according to any one of the first to third aspects of the invention, the side sheet passes through the side sheet and the color of the back sheet and the surface sheet. The back sheet is formed of a material whose color is visible, and the color of the back sheet is different from the color of the side sheet and the color of the top sheet.

  According to the first aspect of the present invention, at least the left and right edge portions of the absorbent article on the left and right sides of the left and right sides of the absorbent core protrude from the left and right edges to the left and right. The side flap part is formed by the back sheet. For this reason, at the time of the removal work, the operator can perform the removal work by holding the side flap portions formed at least at the front side or the rear side at the left and right side edges of the absorbent article by hand. By sandwiching this side flap part, when the absorbent article is sandwiched, a part of the absorbent core is sandwiched, and it is possible to avoid inconveniences such as overflowing excretion fluid such as urine contained in the absorbent core, The work of removing the absorbent article can be performed smoothly.

  Also, the left and right side flap portions are formed by folded portions on both the left and right sides of the backsheet and the facing portions of the backsheet that face the folded portions. Therefore, the left and right side flap portions can be formed by using a part of the back sheet, and there is no need to provide a dedicated sheet material or the like for forming the side flaps to the absorbent article.

  In addition, since the left and right folded parts of the backsheet are folded so as to overlap the left and right sides of the absorbent core from the skin side, if a part of the absorbent core is pinched by hand during removal work, the absorbent core It is possible to suppress the excretion fluid overflowing from the outside from flowing out to the outside by the folded back portion of the back sheet.

  In addition, since the joining regions of the outer surface surfaces of the left and right side sheets are joined to the left and right edges of the back sheet, the side sheets and the back of the excretory fluid contained in the absorbent core leak out. It can be reliably suppressed by the sheet.

  According to the second aspect of the present invention, the left and right side flap portions are left and right beyond the laterally outer side edges of the left and right side seats in at least the front portion or the rear portion of the absorbent article. It has a projecting part that projects outward in the direction. Further, the left and right side sheets are not joined to the back sheet from the side end of the side sheet toward the inner side in the left-right direction in the portion where the protruding portion of the side flap portion in the front-rear direction of the absorbent article is provided. It has a non-joining region. For this reason, a flap part can be clamped so that a finger may be inserted between a non-joining field of a back sheet and a side sheet. When a finger is inserted between the back sheet and the non-bonded area of the side sheet, the finger hits and stops at the laterally outer side edge of the bonded area of the side sheet. Since the side edges on the inner side in the left-right direction of the left and right folded portions of the backsheet are located on the inner side in the left-right direction relative to the side edges on the outer side in the left-right direction of the joining area of the side seat, In the non-joining region on the outer side in the left-right direction with respect to the side edge on the outer side in the left-right direction of the region, the folded portion of the back sheet always exists. For this reason, by turning the finger inserted between the backsheet and the non-bonded area of the sidesheet at the lateral end of the bonded area of the sidesheet, the folded portion of the backsheet of the absorbent article It is possible to cause the worker to securely hold the existing portion. As a result, the finger inserted between the back sheet and the non-bonded area of the side sheet goes too far into the left and right direction inner side of the bonded area of the side sheet, and enters the left and right direction inner side. It is possible to prevent the operator from holding the portion where the folded portion of the back sheet does not exist, and excretion liquid overflowing from the absorption core due to the pressing force by the holding through the top sheet and leaking outside.

  In addition, when a finger is inserted between the backsheet and the non-bonded area of the side sheet, the left and right sides of the absorbent article are caused by the finger hitting the end position on the inner side in the left-right direction of the non-bonded area of the sidesheet. The operator can easily recognize the limit position of the nipping region where the folded back portion of the back sheet exists at the edge of the finger by the touch of the finger.

  Further, in the present invention, the left and right side flap portions formed by the backsheet are arranged in the left-right direction beyond the laterally outer side edges of the left and right side seats in the front portion or the rear portion of the absorbent article. An overhanging portion that projects outward is provided. For this reason, a finger | toe can be easily inserted between the back seat | sheet and the non-joining area | region of a side seat | sheet at the time of a removal operation | work.

  Moreover, the nonwoven fabric in which many embossing was given to the side sheet | seat compared with the nonwoven fabric used for a backsheet is used in many cases. Nonwoven fabric with a large number of embosses is slippery when sandwiched. In this regard, in the present invention, as described above, the left and right side flap portions formed by the backsheet have protruding portions that protrude outward in the left-right direction beyond the laterally outer side edges of the left and right side seats. In addition, a non-joining region that is not joined to the back sheet is provided on the side sheet, and the absorbent article can be sandwiched by inserting a finger between the non-joining region of the back sheet and the side sheet. For this reason, it is possible to perform the removal work by firmly holding the portion of the back sheet that is not slippery.

  Moreover, since the back sheet includes a non-woven sheet and a liquid-impervious resin film bonded to the skin side of the non-woven sheet, it has a good touch and natural texture, and a reliable liquid shielding property. A combined absorbent article is obtained.

  According to the invention described in claim 3, since the absorbent core has the front and rear widened portions and the narrow constricted portion provided between the front and rear widened portions, the shape of the absorbent core is Accordingly, the width in the left-right direction is expanded at the front and rear portions of the absorbent article. In this way, by providing a protruding portion of the side flap portion on the front side portion or the rear side portion of the absorbent article whose width in the left-right direction is expanded, the side flap portion can be more easily sandwiched during removal work, Removal of the absorbent article becomes easier. In addition, since the widened part before and after the absorbent core has a large amount of excretory fluid absorption and is heavy when removed, the overhanging part of the side flap part provided in the front part or rear part of the absorbent article The operator can stably handle the absorbent article by being held by the operator during the removal operation.

  According to the invention described in claim 4, by the difference in the color of the backsheet with respect to the side sheet and the surface sheet, it is possible to easily grasp visually the region where the folded portion of the backsheet in the absorbent article exists, Convenient.

It is the top view seen from the skin surface side of the disposable diaper as an absorptive article concerning one embodiment of the present invention. It is a figure which shows typically the structure of the cross section along the AA line of the disposable diaper of FIG. It is a figure which shows a mode when the flap part on either side of the disposable diaper of FIG. 1 is clamped.

  FIG. 1 is a plan view of a disposable diaper (hereinafter simply referred to as “diaper”) as a disposable absorbent article according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. FIG. 1 and 2, the horizontal direction X corresponds to the wearer's left-right direction, and the vertical direction Y corresponds to the wearer's front-rear or vertical direction. In the configuration of the diaper 1 shown in FIG. 1, the upper side in the drawing of FIG. 1 corresponds to the rear side of the diaper 1.

  The diaper 1 according to the present embodiment is used by being laid inside a crotch part such as a tape-type or pants-type diaper (sometimes referred to as a urine pad). By laying this diaper 1 on the crotch of a tape-type or pant-type diaper, etc., the liquid absorption capacity of the diaper was reinforced, and when a large amount of urine was urinated or loose stool containing a large amount of water was defecation It will be possible to cope with the case. In addition, when normal or relatively small amount of urination or defecation is performed, if only the diaper 1 laid inside the tape-type or pants-type diaper is replaced, the outer diaper can be used as it is. There is also an advantage. A tape-type diaper is a type in which fastening members such as hook-and-loop fasteners are provided on both the left and right sides of the rear edge of the diaper. A pant-type diaper is a pair of left and right leg holes and waist holes. This is a type of diaper that is attached to the left and right leg holes through the wearer's legs.

  As shown in FIGS. 1 and 2, the diaper 1 includes an absorbent core 11, a back sheet 12, a top sheet 13 as a surface sheet, left and right side sheets 14, and tissue paper 15.

  Absorption core 11 absorbs excretion fluid (for example, water contained in urine or feces) excreted by the wearer. More specifically, the absorbent core 11 includes a fiber assembly configured to include at least aggregated fibers. Preferably, the fiber assembly includes an absorbent resin powder mixed or dispersed in the fiber assembly. In the present embodiment, the fiber assembly of the absorbent core 11 is not packaged with a packaging sheet (for example, tissue paper), but the fiber assembly may be packaged with a packaging sheet. In this case, the tissue paper 15 described later may be omitted.

  Moreover, the fiber assembly of the absorbent core 11 is provided between the front and rear widened portions 11a and 11b whose width along the lateral direction X is enlarged, and the front and rear widened portions 11a and 11b. And a constricted portion 11c with a narrow width, and has a substantially hourglass shape when viewed from the thickness direction. As other examples of the shape of the fiber assembly, various shapes such as a substantially rectangular shape and a substantially elliptical shape can be adopted.

  The back sheet 12 has liquid impermeability and is disposed on the outer surface side of the absorbent core 11. On both the left and right sides of the back sheet 12, there are folded portions 121 that are folded back to the skin surface side by a folding line (not shown) along the vertical direction Y. The folded portion 121 is folded so as to overlap the left and right side portions of the absorbent core 11 from the skin surface side. Such a back sheet 12 includes a nonwoven fabric sheet 21 and a liquid-impermeable resin film 22 bonded to the skin surface side of the nonwoven fabric sheet 21. For the nonwoven fabric sheet 21, for example, a synthetic fiber nonwoven fabric having water repellency is used. For the resin film 22, for example, a synthetic resin film such as polyethylene (preferably a liquid-impermeable and air-permeable film) is used.

  In the diaper 1 according to the present embodiment, the shape of the outer edges on the left and right sides of the back sheet 12 is formed in a substantially hourglass shape along the shape of the absorbent core 11. In the portion located at the rear side portion P2 of the diaper 1 at the left and right outer edges of the backsheet 12, the folding lines of the folded portions 121 on the left and right sides of the backsheet 12 are left. In the portion of the back sheet 12 located in a portion other than the portion P2, the left and right side flap portions 122 are cut out and formed so as to follow the shape of the absorbent core 11.

  The top sheet 13 has liquid permeability, and is arranged along the vertical direction Y at the center in the horizontal direction X on the skin surface side of the diaper 1. The left and right side sheets 14 have liquid impermeability, and are arranged along the vertical direction Y so as to overlap the left and right side portions of the top sheet 13 from the skin surface side. The top sheet 13 is formed of a liquid-permeable synthetic fiber nonwoven fabric or woven fabric. The side sheet 14 is formed of a water repellent nonwoven fabric or the like.

  The portions on the inner side in the lateral direction X of the left and right side seats 14 are standing portions 141 that can stand up in a direction away from the top sheet 13 (skin surface side). At least one (two in this embodiment) substantially thread-like elastic members 23 and 24 are applied to the end portion of the upright portion 141 on the inner side in the lateral direction while being stretched along the longitudinal direction Y. ing. By the contraction of the elastic members 23 and 24, the upright portion 141 rises toward the skin surface side and functions as a three-dimensional gather. Side leakage of excrement is prevented by this three-dimensional gather. The three-dimensional gather including the elastic members 23 and 24 may be omitted.

  The tissue paper 15 is disposed so as to face the skin surface side surface of the absorbent core 11 and plays a role of preventing leakage of the absorbent resin powder contained in the absorbent core 11. The tissue paper 15 is disposed on the outer surface side (absorption core 11 side) of the folded portion 121 and the top sheet 13 of the back sheet 12.

  The right and left side sheets 14, the top sheet 13, and the left and right folded portions 121 of the back sheet 12 are joined by the left and right joining portions 26. The joining portion 26 is provided along the longitudinal direction Y on the skin surface side of the absorbent core 11, and the belt-like joining region 142 along the longitudinal direction Y on the outer surface side surface of the left and right side sheets 14 and the left and right sides of the top sheet 13. While joining an edge part, the joining area | region 142 of the right-and-left side sheet | seat 14 and the edge part of the horizontal direction X inner side of the right-and-left folded part 121 of the back seat | sheet 12 are joined. An adhesive (for example, a hot melt adhesive) is used for joining at the joining portion 26. 1, hidden lines 142a and 142b indicate side edges on both sides in the lateral direction X of the contact bonding area 142, a hidden line 13a indicates left and right side edges of the top sheet 13, and a hidden line 121a indicates the folding back of the back sheet 12. The side end of the part 121 on the inner side in the lateral direction X is shown.

  In the present embodiment, side flap portions 122 are formed on the left and right edges of the diaper 1 so as to project outward in the lateral direction X from the left and right side ends 11 d of the absorbent core 11. The side flap portion 122 is formed by a folded portion 121 on both the left and right sides of the backsheet 12 and a facing portion 123 of the backsheet 12 that faces the folded portion 121. Such left and right side flap portions 122 are provided at least at the front portion P1 or the rear portion P2 of the left and right edges of the diaper 1. In the present embodiment, the left and right side flap portions 122 are provided in substantially all sections along the vertical direction Y on both the left and right sides of the diaper 1. As a modified example, the left and right side flap portions 122 may be partially provided only on the front portion P1 or only on the rear portion P2 at the left and right edges of the diaper 1.

  Further, the left and right side flap portions 122 extend in the lateral direction X outward beyond the lateral end 14a of the lateral side X of the left and right side seats 14 in at least the front portion P1 or the rear portion P2 of the diaper 1. Overhang portions 122a and 122b are provided. In this embodiment, the overhang | projection parts 122a and 122b are partially provided in the front part P1 and the rear part P2 in the edge part of the right-and-left both sides of the diaper 1. FIG. As a modification, any one of the front and rear projecting portions 122a and 122b may be omitted.

  Further, the left and right side seats 14 are back-facing from the side end 14a of the side seat 14 toward the inner side in the lateral direction X at the portions P1 and P2 where the overhang portions 122a and 122b in the longitudinal direction Y of the diaper 1 are provided. A non-joining region 143 that is not joined to the sheet 12 is provided. The width of the non-bonded region 143 along the lateral direction X is set to, for example, about 5 mm or more.

  Such a diaper 1 is arrange | positioned on the skin surface side, such as another disposable diaper, as above-mentioned, and is mounted | worn with the area | region containing a wearer's crotch part. When the wearer excretes urine or the like, the excreted excreted liquid reaches the absorption core 11 via the top sheet 13 and the tissue paper 15 and is absorbed by the absorption core 11. Since the outer surface side and the left and right edge portions of the absorbent core 11 are covered with the liquid-impermeable back sheet 12 and the side sheet 14, the excretory liquid contained in the absorbent core 11 leaks to the outside of the diaper 1. It is prevented from taking out.

  Further, in the present embodiment, the left and right side flap portions 122 projecting outward in the left-right direction from the left and right side ends 11a of the absorbent core 11 over substantially the entire length Y in the left and right edges of the diaper 1. Is formed by the back sheet 12. For this reason, at the time of the removal work, the operator can perform the removal work by holding the side flap portions 122 provided at the left and right edges of the diaper 1 by hand. By sandwiching the side flap part 122, when the diaper 1 is sandwiched, a part of the absorption core 11 is sandwiched, and inconveniences such as overflow of excretion fluid such as urine contained in the absorption core 11 can be avoided. At the same time, the diaper 1 can be removed smoothly.

  Further, the left and right side flap portions 122 are formed by folded portions 121 on both the left and right sides of the backsheet 12 and facing portions 123 of the backsheet 12 that face the folded portions 121. Therefore, the left and right side flap portions 122 can be formed by using a part of the back sheet 12, and it is not necessary to provide the diaper 1 with a dedicated sheet material or the like for forming the side flap portions 122.

  In addition, since the left and right folded portions 121 of the back sheet 12 are folded so as to overlap the left and right side portions of the absorbent core 11 from the skin surface side, a part of the absorbent core 11 is sandwiched by a hand during removal work Moreover, it is possible to suppress the excretion fluid overflowing from the absorbent core 11 from flowing out to the outside by the folded portion 121 of the back sheet 12.

  In addition, the band-shaped joining region 142 along the longitudinal direction Y on the outer surface side surface of the left and right side sheets 14 is laterally extended by the joining part 26 continuously extending in the longitudinal direction Y. X is joined to the inner edge. For this reason, it can suppress reliably by the side seat | sheet 14 and the back seat | sheet 12 that the excretion fluid contained in the absorption core 11 leaks outside.

  Further, the left and right side flap portions 122 project outwardly in the lateral direction X beyond the side ends 14a of the left and right side seats 14 in at least the front portion P1 and the rear portion P2 of the diaper 1. 122b. Moreover, the left and right side seats 14 are laterally X inward from the side edges 14a of the side seats 14 in the portions P1 and P2 where the overhang portions 122a and 122b of the side flap portion 122 are provided in the longitudinal direction Y of the diaper 1. The non-joining area | region 143 which is not joined with the back seat | sheet 12 toward it. For this reason, as shown in FIG. 3, the flap portion 122 can be sandwiched by inserting the finger 31 between the back sheet 12 and the non-bonded region 143 of the side sheet 14. When the finger 31 is inserted between the back sheet 12 and the non-bonding region 143 of the side sheet 14, the finger 31 is located on the lateral X outer side of the bonding region 142 of the side sheet 14 as shown in FIG. It stops by hitting the end 142a (the side end on the lateral direction X outward side of the joint portion 26). The lateral end X inward side 121a of the left and right folded portions 121 of the backsheet 12 is positioned inward in the lateral direction X with respect to the lateral end X outward side 142a of the joining region 142 of the side seat 14. Therefore, the folded portion 121 of the backsheet 12 always exists in the non-joining region 143 in the lateral X direction outer side than the lateral end 142a on the lateral direction X outward side of the joining region 142 of the side seat 14. Yes. For this reason, the finger 31 inserted between the back sheet 12 and the non-bonded area 143 of the side sheet 14 is stopped at the lateral end 142a on the lateral direction X outward side of the bonded area 142 of the side sheet 14, whereby the diaper 1 Thus, the operator can securely hold the portion where the folded portion 121 of the backsheet 12 is present. As a result, the finger 31 inserted between the back sheet 12 and the non-bonded area 143 of the side sheet 14 passes the lateral end 142a of the bonded area 142 of the side sheet 14 in the horizontal direction X, beyond the lateral end 142a. The operator pinches a portion where the folded portion 121 of the back sheet 12 of the diaper 1 does not exist, and the excretion fluid overflowing from the absorbent core 11 due to the pressing force by the permeation passes through the top sheet 13. Can be prevented from leaking outside.

  Further, when the finger 31 is inserted between the back sheet 12 and the non-bonded region 143 of the side sheet 14, the finger 31 is inward in the lateral direction X in the non-bonded region 143 of the side sheet 14 as shown in FIG. By touching the terminal end position on the side, the operator can easily recognize the limit position of the nipping region where the folded portion 121 of the back sheet 12 exists at the left and right edges of the diaper 1 by the touch of the finger 31. it can.

  Further, in the present embodiment, the left and right side flap portions 122 formed by the back sheet 12 are laterally extended beyond the side edges 14a of the left and right side sheets 14 in the front part P1 or the rear part P2 of the diaper 1. Overhang portions 122a and 122b projecting outward in the direction X are provided. For this reason, the finger 31 can be easily inserted between the back sheet 12 and the non-bonded region 143 of the side sheet 14 during the removal operation.

  Further, the side sheet 14 is often made of a non-woven fabric to which many embosses are applied as compared with the non-woven fabric used for the back sheet 12. Nonwoven fabric with a large number of embosses is slippery when sandwiched. With respect to this point, in the present embodiment, as described above, the left and right side flap portions 122 formed by the back sheet 12 extend outwardly in the lateral direction X beyond the side ends 14a of the left and right side sheets 14. 122a and 122b are provided, a non-joining region 143 that is not joined to the back sheet 12 is provided on the side sheet 14, and a finger 31 is inserted between the back sheet 12 and the non-joining region 143 of the side sheet 14. 1 can be clamped. For this reason, it is possible to perform the removal work by firmly holding the portion of the backsheet 12 that is difficult to slip.

  In addition, since the back sheet 12 includes the nonwoven fabric sheet 21 and the liquid-impermeable resin film 22 bonded to the skin surface side of the nonwoven fabric sheet 21, the back sheet 12 has a good touch and natural texture, and reliable shielding. A diaper 1 having liquidity is obtained.

  Moreover, in the diaper 1 which concerns on this embodiment, since the absorption core 11 has a substantially hourglass-shaped shape seeing from the thickness direction, according to the shape of this absorption core 11, the front side and rear side of the diaper 1 The widths in the horizontal direction X of the portions P1 and P2 are enlarged. By providing the overhanging portions 122a and 122b of the side flap portion 122 in the front portion P1 and the rear portion P2 of the diaper 1 whose width in the lateral direction X is thus increased, the side flap portion 122 is removed during the removal operation. The diaper 1 can be removed more easily. Further, the widened portions 11a and 11b before and after the absorbent core 11 have a large amount of excretory fluid absorption (when the wearer is lying on his back, the amount of excretory fluid absorbed by the widened portion 11b on the back side is particularly large). Since it is heavy at the time of removal, the operator holds the projecting portions 122a and 122b of the side flap portion 122 provided on the front portion P1 and the rear portion P2 of the diaper 1 during the removal work. The diaper 1 can be handled stably.

  In addition, as a modified example of the diaper 1 according to the present embodiment, a material (for example, non-woven fabric) in which the left and right side sheets 14 are visible through the side sheets 14 and the color of the back sheet 12 and the color of the top sheet 13 are visible. The color of the back sheet 12 may be different from the color of the side sheet 14 and the color of the top sheet 13. The color of the top sheet 13 in this case is a color visually recognized as the color of the top sheet 13 when the top sheet 13 is viewed from the surface on which the nonwoven fabric sheet 21 is adhered. It is a mixed color of the color of the sheet 21 and the color of the resin film 22 that is visible through the nonwoven fabric sheet 21. Due to the difference in the color of the back sheet 12 with respect to the side sheet 14 and the top sheet 13, it is possible to easily grasp the nipping region where the folded portion 121 of the back sheet 12 in the diaper 1 is present, which is convenient.

  DESCRIPTION OF SYMBOLS 1 Diaper, 11 Absorption core, 11a, 11b Widening part, 11c Constriction part, 11d Side end, 12 Back sheet, 121 Folding part, 122 Side flap part, 122a, 122b Overhang part, 123 Opposing part, 13 Top sheet, 14 Side Sheet, 14a Side end, 141 Standing part, 142 Joining area, 143 Non-joining area, 15 Tissue paper, 21 Non-woven sheet, 22 Resin film, 23, 24 Elastic member, 26 Joining part, P1 Front part, P2 Rear side portion.

Claims (4)

An absorbent article to be worn in an area including the wearer's crotch,
An absorbent core comprising a material having liquid absorbency;
A backsheet that has liquid impermeability, is disposed on the outer surface side of the absorbent core, and is folded back so that the folded portions on the left and right sides overlap the left and right sides of the absorbent core from the skin surface side;
A surface sheet having liquid permeability and disposed on the skin surface side of the absorbent core;
It has liquid impermeability and is disposed on both the left and right sides of the absorbent core on the skin surface side, and the bonding area of the outer surface side surface is the left and right edges of the top sheet and the back sheet folded back and left Left and right side sheets joined to the edges on both sides;
With
The back sheet is formed by a folded portion on both left and right sides and a facing portion of the back sheet facing the folded portion, and left and right side flaps projecting outward in the left and right direction from side edges on both left and right sides of the absorbent core Part
The left and right side flap portions are
An absorbent article, characterized in that it is provided in at least the front part or the rear part of the left and right edges of the absorbent article. The absorbent article according to claim 1,
The back sheet includes a non-woven sheet and a liquid-impermeable resin film bonded to the skin side of the non-woven sheet.
The left and right side flap portions are stretched outward in the left-right direction beyond the laterally outer side edges of the left and right side seats in at least the front portion or the rear portion of the absorbent article. With overhanging part
The left and right side sheets are joined to the back sheet from the side end of the side sheet toward the inner side in the left-right direction at the portion where the protruding portion in the front-rear direction of the absorbent article is provided. An absorbent article comprising a non-bonded region. The absorbent article according to claim 2,
The absorbent core includes front and rear widened portions whose width along the left-right direction is enlarged, and a constricted portion provided between the front and rear widened portions and narrowed along the left-right direction. ,
The overhang portion of the left and right side flap portions is provided on the outer side in the left-right direction of at least one of the front and rear widened portions of the absorbent core. Goods. In the absorptive article according to any one of claims 1 to 3,
The side sheet is formed of a material that allows the color of the back sheet and the color of the top sheet to be seen through the side sheet,
The color of the back sheet is different from the color of the side sheet and the color of the top sheet.

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