JP6002456B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a sanitary napkin.

  Conventionally, in an absorbent article such as a sanitary napkin, in order to improve leakage prevention and wearability, a top sheet and an absorber are integrally recessed toward the back sheet side on the skin facing surface side. It is known to form grooves. In addition, as an absorbent article such as a sanitary napkin, there is known an article provided with a main body having a liquid-retaining absorbent body and a pair of three-dimensional gathers arranged on both side portions along the longitudinal direction of the main body. ing. In addition, using such a groove as a starting point or using the shrinkage force of three-dimensional gathers, a part of the absorbent article is bent toward the skin facing surface, and the bent portion is fitted to the wearer's body to prevent leakage. Techniques for achieving this are also known.

  For example, in Patent Document 1, the absorbent article has a skin-facing surface and a longitudinal front end region and / or a rear end region of the absorbent article. It is described that linear embosses (grooves) that gradually approach the longitudinal center line are formed toward the end edge side. According to Patent Document 1, when receiving a slight pressing force from the shorts side during wearing, the front end portion and / or the rear end portion positioned outward in the longitudinal direction from the linear embossing in the absorbent article are shorts ( It is said that it is bent into a shape along the curve shape of the wearer's body) and curved so as to follow the shorts shape in a plan view, so that the degree of close contact with the body is increased and leakage before and after is prevented.

  Patent Document 2 discloses an elastic elastic member over a predetermined section along the longitudinal direction on both sides on the skin facing surface side from the viewpoint of improving fit to the body and effectively preventing front leakage. In an absorbent article having a three-dimensional gather that stands on the skin-facing surface side due to the contraction force of the three-dimensional gather, the substantially central point of the standing section of the three-dimensional gather is positioned in front of the body fluid discharge site in the absorbent article, and the elastic expansion and contraction It is described that the front end portion of the absorbent article is raised in a curved shape by the contraction force of the member.

JP 2002-291806 A JP 2003-180734 A

  The absorbent article described in Patent Document 1 is an arc-shaped emboss as a so-called leak-proof groove formed at or near the boundary between the front part and the excretory part facing part (indicated by reference numeral 8A in FIG. 1 of Patent Document 1). Apart from the embossed portion 8A, the linear emboss is formed in the shape of a letter C in plan view in front of the emboss 8A, and the front end of the absorbent article is forced by the linear embossing when worn. Therefore, the curved front end is hard overall and has a low degree of freedom of movement, so it cannot be said that the body fits well. There was room for improvement. Further, in the absorbent article described in Patent Document 2, the skin facing surface of the front end portion of the absorbent article that stands up in a curved shape has a substantially convex shape toward the longitudinal front end of the absorbent article in plan view. When the U-shaped emboss (groove) is formed, the formation position of this emboss is not appropriate in relation to the three-dimensional gather. Therefore, it can be said that the front end portion standing on the curve has sufficient fit to the body. Therefore, it is difficult to say that the pre-leakage can be effectively prevented.

  Therefore, the subject of this invention is providing the absorbent article which can prevent pre-leakage effectively.

  The present invention comprises a main body comprising a top sheet that forms a skin-facing surface, a back sheet that forms a non-skin-facing surface, and an absorbent body interposed between both sheets, and a longitudinal direction that corresponds to the front-rear direction of the wearer. A lateral direction perpendicular to this, and an excretion part facing part disposed opposite to the excretion part of the wearer when worn, a front part disposed on the abdomen side of the wearer from the excretion part facing part, It is an absorbent article having a rear portion arranged on the back side of the wearer rather than the excretory portion facing portion in the longitudinal direction, and the topsheet and the absorber are on the skin facing surface of the main body in the front portion. A pair of vertical grooves extending in the vertical direction and a horizontal groove extending inward in the horizontal direction from the longitudinal front end of the vertical groove are formed as linear grooves that are integrally recessed toward the back sheet side. At least the excretory part on the left and right side parts along the longitudinal direction of the main body. A pair of three-dimensional gathers are provided to stand toward the wearer's skin when worn in the facing portion, and the three-dimensional gathers are connected to the base wall portion and the upper end portion of the base wall portion, along the longitudinal direction. The elastic member includes an elastic expansion / contraction part arranged in an extended state, and the elastic expansion / contraction part protrudes laterally outward from the upper end of the base wall part, and the elastic expansion / contraction part The inner edge along the longitudinal direction is connected to the upper end, and the outer edge along the longitudinal direction of the elastic stretchable part is not joined to other components of the absorbent article and forms a free side edge. A non-stretchable region in which the elastic stretchable portion at the longitudinal end of the three-dimensional gather is joined to the main body and its stretchability is inhibited; and the non-stretchable portion Elasticity of the elastic elastic part located inward in the vertical direction from the region There is an unhindered stretchable region, and the boundary between the non-stretchable region and the stretchable region in the front portion is placed in the vertical direction with the longitudinal front end of the horizontal groove or from the longitudinal front end. Also, the problem is solved by providing an absorbent article located on the rear side in the longitudinal direction.

  The absorbent article of the present invention can effectively prevent pre-leakage.

FIG. 1 is a plan view schematically showing a skin contact surface side (surface sheet side) of a sanitary napkin that is an embodiment of the absorbent article of the present invention. FIG. 2 is a cross-sectional view schematically showing a cross section taken along line II of FIG. 3 is a cross-sectional view schematically showing a cross section taken along line II-II in FIG. 4 (a) to 4 (d) are plan views schematically showing the arrangement of the vertical grooves and the horizontal grooves in the front part of the absorbent article. FIG. 5 is a perspective view schematically showing a front portion of the napkin shown in FIG. 1 in a natural state. FIG. 6 is a plan view schematically showing the front part of the napkin shown in FIG.

  Hereinafter, the absorbent article of this invention is demonstrated with reference to drawings based on the sanitary napkin which is one preferable embodiment. The napkin 1 according to the present embodiment, as shown in FIG. 1 to FIG. 3, has a top sheet 2 that forms a skin facing surface, a back sheet 3 that forms a non-skin facing surface, and an absorption interposed between both sheets 2 and 3. A main body 5 having a body 4 is provided, and has a vertical direction X corresponding to the wearer's front-rear direction and a horizontal direction Y orthogonal thereto.

  If it demonstrates further, the napkin 1 will be the excretion part opposing part B arrange | positioned facing a wearer's excretion part at the time of wear, and the front part distribute | arranged to a wearer's abdominal side (front side) rather than the excretion part opposition part B at the time of wear It has A and the back part C distribute | arranged to a wearer's back side (rear side) rather than the excretion part opposing part B at the time of wear in the vertical direction X. "At the time of wearing" here means a state in which a normal proper wearing position (correct wearing position of the absorbent article) is maintained, and includes when the absorbent article is in a state shifted from the wearing position. Absent. The napkin 1 (main body 5) has a shape that is long in one direction (longitudinal direction X) in a plan view as shown in FIG.

  In the present specification, the skin facing surface is a surface facing the wearer's skin when wearing the absorbent article in the absorbent article or its constituent member (for example, the main body 5), and the non-skin facing surface is It is a surface in the absorbent article or a component thereof directed toward the side opposite to the skin side (clothing side) when the absorbent article is worn. Moreover, the vertical direction X corresponds to the direction (longitudinal direction) along the long side of an absorbent article or its structural member, and the horizontal direction Y corresponds to the width direction of an absorbent article or its structural member.

  Further, in the absorbent article of the present invention, when the excretory part facing part has a wing part like the napkin 1 of the present embodiment, the longitudinal direction of the absorbent article (the longitudinal direction of the absorbent article, FIG. (X direction in the middle) is a region having a wing portion (a region sandwiched between a root on one side in the longitudinal direction of the wing portion and a root on the other side). The excretory part opposing part in the absorbent article which does not have a wing part is a transverse direction (the width direction of an absorbent article, the Y direction in the figure) that occurs when the absorbent article is folded into an individual form. ) Across two folding lines (in FIG. 1, a first folding line indicated by a symbol L1 and a second folding curve indicated by a symbol L2), the first folding is counted from the longitudinal front end of the absorbent article. The area is the same as or narrower than the area surrounded by the curved line and the second folding line. Further, when the longitudinal length of the absorbent article is long and three folding curves are generated, the absorbent article is surrounded by the first folding curve and the second folding curve as counted from the front end in the longitudinal direction of the absorbent article. The region is the same as or narrower than the region surrounded by the first folding line and the third folding line (not shown) counted from the front end.

  As shown in FIG. 2, both side edges along the longitudinal direction X of the topsheet 2 are placed at the same side in the lateral direction Y with both side edges along the longitudinal direction X of the absorber 4, or along the longitudinal direction X of the absorber 4. It is located inward in the width direction Y from both side edges, and the topsheet 2 is within a region sandwiched between both side edges along the longitudinal direction X of the absorbent body 4. The side edge along the longitudinal direction X of the absorbent body 4 is the edge that protrudes most in the lateral direction Y in the absorbent body 4, and is the side edge along the longitudinal direction X of the lower layer absorbent body 40 described later in this embodiment. . On the other hand, as shown in FIGS. 2 and 3, the back sheet 3 covers the entire area of the non-skin facing surface of the absorbent body 4 and further outwards in the lateral direction Y from both side edges along the longitudinal direction X of the absorbent body 4. The side flap portion 6 is formed together with a side seat 16 described later.

  As shown in FIG. 1, the side flap portion 6 largely protrudes outward in the lateral direction Y at the excretory portion facing portion B, thereby a pair of wings on the left and right sides along the longitudinal direction X of the main body 5. Portions 7 and 7 are extended. In addition, the side flap portion 6 also protrudes outward in the lateral direction Y also at the rear portion C, whereby a pair of rear flap portions 8, 8 are formed on the left and right sides along the longitudinal direction X of the main body 5. It is extended. Further, as shown in FIG. 1, the top sheet 2 and the back sheet 3 extend outward in the longitudinal direction X from the front end and the rear end in the longitudinal direction X of the absorbent body 4. The end seal portion is formed by bonding to each other by a known bonding means such as an agent, heat sealing, ultrasonic sealing or the like.

  The non-skin facing surface of the main body 5 (the non-skin facing surface 3b of the back sheet 3) is directed to the clothing side such as the crotch portion of the shorts when worn. The non-skin facing surface 3b is provided with an adhesive portion (not shown) for fixing the napkin 1 to a crotch portion of clothes such as shorts. Moreover, the non-skin opposing surface of a pair of wing parts 7 and 7 is provided with the adhesion part (not shown) for fixing this wing part 7 to the outer surface (non-skin opposing surface) of clothes, such as shorts. Yes. The pair of rear flaps 8 and 8 are arranged on the inner surface (skin facing surface) of the clothes when the napkin 1 is worn, and an adhesive portion (not shown) is provided on the non-skin facing surface. It has been. These pressure-sensitive adhesive portions are provided by applying a hot-melt pressure-sensitive adhesive at a predetermined location, and are covered with a release sheet (not shown) made of a film, nonwoven fabric, paper, or the like before the napkin 1 is used.

  As shown in FIGS. 1 and 2, the absorbent body 4 has a middle-high portion 40 whose central portion in the lateral direction Y is thicker than the surrounding region and protrudes to the skin facing surface side (surface sheet 2 side). The middle / high portion includes a drainage portion facing middle / high region 41 extending in the longitudinal direction X through the excretion portion facing portion B. In addition to the excretion part opposing middle / high area 41, the middle / high part in the present embodiment further includes a rear middle / high area 42 located on the rear side in the vertical direction X with respect to the excretion part opposing middle / high area 41. The rear middle-high area 42 has a smaller area than the excretory part-facing middle-high area 41.

  More specifically, the absorber 4 has a substantially rectangular shape with rounded corners in plan view and extends from the front part A to the rear part C via the excretory part facing part B, The front upper layer absorption, which is shorter than the lower layer absorber 45 in the lateral direction Y and is so-called narrow and disposed on the skin facing surface in the central portion of the lower layer absorber 45 in the lateral direction Y in the excretory part facing part B. Body 46, and rear upper layer absorber 47 that is narrower than lower layer absorber 45 and arranged on the skin-facing surface at the center in the lateral direction Y of lower layer absorber 45 at rear portion C. Yes. The excretion part-facing middle-high region 41 is formed from the front upper layer absorber 46 and a portion of the lower layer absorber 45 located below the front upper layer absorber 46, and the rear middle-high region 42 is composed of the rear upper layer absorber 47 and the lower layer absorber. The body 45 is formed from a portion located below the rear upper layer absorber 47. Each of the upper layer absorbers 46 and 47 has a substantially rectangular shape with rounded corners in plan view, and is arranged on the lower layer absorber 45 with its longitudinal direction coinciding with the longitudinal direction X of the lower layer absorber 45. Yes. Between the two absorbers 45 and 46 forming the excretory part facing middle and high region 41, between the two absorbers 45 and 47 forming the rear middle and high region 42, and the absorber 4 (lower layer absorber 45, upper layer absorption) The body 46, 47) and the top sheet 2 and the back sheet 3 may be joined by an adhesive, respectively.

  As shown in FIGS. 1 to 3, a pair of three-dimensional gathers 10, 10 standing on the left and right sides along the longitudinal direction X of the main body 5 at least at the excretory part-facing part B toward the wearer's skin when worn. Is provided. Each three-dimensional gather 10 includes a base wall portion 11 and an elastic stretchable portion 12 that is connected to the upper end portion 11a of the base wall portion 11 and in which an elastic member 15 is extended along the vertical direction X. It is configured.

  The solid gather 10 will be further described. The solid gather 10 includes a side sheet 16 having a certain width in the vertical direction X in addition to the elastic member 15. As shown in FIG. 2 and FIG. 3, the base wall portion 11 and its upper end portion 11 a are folded back so as to have a shape in which an elastic stretchable portion 12 is continuously provided. Therefore, the three-dimensional gather 10 formed by folding the side sheet 16 has a two-layer structure in the base wall portion 11 and the elastic stretchable portion 12 as shown in FIGS. The side sheets 16 and 16 constituting the two-layer structure are joined by an adhesive (not shown).

  The base wall portion 11 is joined to the skin facing surface of the main body 5 (skin facing surface 2a of the topsheet 2) above the absorber 4, and is worn from the joint portion 13 as a starting point as shown in FIG. It sometimes has an upstanding portion 14 that stands up toward the wearer's skin. A portion of the base wall portion 11 other than the standing portion 14 is wound down along the side edge along the longitudinal direction X of the absorber 4 (lower layer absorber 45), and further from the side edge of the absorber 4 in the lateral direction Y. It extends outward and the extended part is joined to the extended part from the side edge of the absorber 4 in the back sheet 3 by a known joining means such as an adhesive or heat seal. The joint portion 13 between the base wall portion 11 (standing portion 14) and the top sheet 2 is linear in a plan view and extends along the longitudinal direction X over substantially the entire length of the three-dimensional gather 10. The joining portion 13 is formed by applying an adhesive such as a hot melt adhesive. The linear joint portion 13 may be a continuous line in which the adhesive is continuously applied along the longitudinal direction X, or may be a broken line in which the adhesive is applied discontinuously. It can be a straight line or a curved line. The linear joint part 13 in this embodiment is a straight line and a continuous line.

  As shown in FIGS. 2 and 3, the elastic stretchable portion 12 protrudes outward in the lateral direction Y from the upper end portion 11 a of the base wall portion 11 (standing portion 14). The inner edge 12p along the longitudinal direction X of the elastic stretchable part 12 is connected to the upper end part 11a of the base wall part 11, and the outer edge 12q along the longitudinal direction X of the elastic stretchable part 12 is connected to other components of the napkin 1. It is not joined and forms a free side edge.

  A plurality of elastic members 15 (four in the present embodiment) extending in the longitudinal direction X are stretched by being bonded and fixed to the side sheets 16 in an expanded state, The expansion / contraction direction coincides with the vertical direction X. The elastic stretchable portion 12 (a stretchable region 12C to be described later) extends at least over the entire length in the longitudinal direction X of the excretory portion facing portion B, and in the present embodiment, is further closer to the excretory portion facing portion B of each of the rear portion C and the front portion A. It extends over the part. The elastic member 15 is disposed in an extended state between the two side sheets 16 and 16 constituting the elastic stretchable part 12, and is bonded to the side sheets 16 and 16 by an adhesive (not shown). The elastic stretchable part 12 is formed in a planar shape as shown in FIGS. 1 to 3 by arranging a plurality of elastic members 15 extending in the vertical direction X at predetermined intervals in the horizontal direction Y. The planar portion (the upper surface of the elastic stretchable portion 12) comes into contact with the skin of the wearer of the napkin 1.

  The width of the elastic stretchable part 12 (the length between the inner edge 12p and the outer edge 12q) is preferably 5 mm or more, more preferably 10 mm or more, and preferably 25 mm or less, from the viewpoint of fit and leakage prevention. More preferably, it is 20 mm or less, More specifically, Preferably it is 5 mm or more and 25 mm or less, More preferably, it is 10 mm or more and 20 mm or less. The number of the elastic members 15 in the elastic stretchable part 12 is preferably 2 or more, more preferably 2 from the viewpoint of allowing the upper surface of the elastic stretchable part 12 to contact the wearer's skin in a planar shape. The number is 6 or less.

  As shown in FIG. 1, the front part A and the rear part C are each non-stretchable in which the elastic stretchable part 12 at the end in the longitudinal direction X of the three-dimensional gather 10 is joined to the main body 5 and its stretchability is hindered. The stretchability of the elastic stretchable portion 12 located in the longitudinal direction inward of the regions (front non-stretchable region 12A, rear non-stretchable region 12B) and the non-stretchable regions 12A, 12B is not hindered (elastic stretchable portion 12 And a stretchable region 12C that is not joined to the main body 5. The stretchable region 12C is located between the front non-stretchable region 12A and the rear non-stretchable region 12B, and is continuous over at least the entire length in the longitudinal direction X of the excretory part facing portion B. FIG. 3 shows a schematic cross-sectional view along the lateral direction Y of the front non-stretchable region 12A. As shown in FIG. 3, the front non-stretchable region 12 </ b> A is formed by joining the elastic stretchable portion 12 together with the base wall portion 11 to the surface sheet 2 constituting the main body 5 by a known joining means such as an adhesive or heat seal. Is formed. Although not shown, the rear non-stretchable region 12B is configured similarly to the front non-stretchable region 12A shown in FIG.

  In the napkin 1, the elastic stretchable portions 12 and 12 of a pair of left and right three-dimensional gathers 10 extending along the vertical direction X of the main body 5 are joined to the main body 5 at the front and rear end portions in the vertical direction X, respectively, and the front non-stretchable region 12A. And by forming the rear non-stretchable region 12B, the two non-stretchable regions 12A and 12B are curved in a natural state. In the napkin 1, the entire shape in the longitudinal direction X is curved in a concave shape toward the skin contact surface side (surface sheet 2 side) in a natural state due to the contraction of the elastic stretchable portion 12.

  As shown in FIG. 1, the surface sheet 2 and the absorbent body 4 are linearly formed on the skin facing surface of the main body 5 (skin facing surface 2 a of the top sheet 2) integrally recessed toward the back sheet 3 side. As the grooves, a pair of vertical grooves 51, 51 extending in the vertical direction X and a horizontal groove 52 extending from the front end 51a in the vertical direction and extending inward in the horizontal direction are formed. Here, “linear” means that the shape of the groove (concave portion) is not limited to a straight line in a plan view, but includes a curved line, and each line may be a continuous line or a broken line. The lateral groove 52 is located in the forefront in the longitudinal direction X of the main body 5 (napkin 1), and the linear groove (the front sheet 2 and the absorbent body 4 are on the back surface) in front of the lateral groove 52 in the longitudinal direction X. Grooves that are integrally recessed toward the sheet 3 side are not formed.

Here, “the lateral groove is continuous from the longitudinal front end of the longitudinal groove” includes both of the following forms A and B. As shown in FIG. 1, the present embodiment includes the following form A, and the lateral groove 52 is continuous between the longitudinal front ends 51 a and 51 a of the pair of longitudinal grooves 51 and 51.
Form A: A form in which a pair of vertical grooves 51, 51 and a horizontal groove 52 are connected by a vertical front end 51 a of the vertical groove 51.
Form B: Although the pair of longitudinal grooves 51, 51 and the lateral groove 52 are not connected, the virtual extension line when the lateral groove 52 is virtually extended outward in the lateral direction Y is a pair of longitudinal grooves 51, The form which has passed 51 each longitudinal direction front end 51a.

  FIG. 4 illustrates an arrangement form of vertical grooves and horizontal grooves. The arrangement forms shown in FIGS. 4A to 4C are common in that the pair of vertical grooves 51, 51 and the horizontal groove 52 are not connected. 4 (a), the virtual extension line T when the horizontal groove 52 is virtually extended outward in the horizontal direction Y passes through the vertical front ends 51a of the pair of vertical grooves 51, 51, respectively. It corresponds to the form B and can be included in the present invention. On the other hand, in the configurations shown in FIGS. 4B and 4C, the virtual extension line T of the lateral groove 52 does not pass through the longitudinal front ends 51a of the pair of longitudinal grooves 51, 51, respectively. It does not correspond to the form B and is outside the scope of the present invention.

  As shown in FIG. 4A, when the vertical grooves 51, 51 and the horizontal groove 52 are not connected, the vertical front end 51a of the vertical groove 51 and the end of the horizontal groove 52 located in the vicinity of the vertical front end 51a (virtual The distance W (see FIG. 4A) in the lateral direction Y with respect to the starting point of the extension line T is preferably within 50 mm, more preferably within 10 mm, from the viewpoint of more surely forming a recess S described later. is there.

  Further, the lateral groove 52 is not limited to a single continuous line as shown in FIG. 1, and may be configured to include a pair of left and right lateral grooves 52A and 52A as shown in FIG. It may be a broken line like a lateral groove 52B shown in FIG. In the form shown in FIG. 4 (d), one of the pair of lateral grooves 52A and 52A is not connected to the other, and the top sheet 2 and the absorber 4 are between the one and the other. A non-recessed portion that is not integrally recessed toward the sheet 3 side is formed. A broken line-shaped groove such as the horizontal groove 52B in FIG. 4E can be formed, for example, by arranging a plurality of embossed portions at a predetermined interval in one direction (linear direction of the groove).

  As shown in FIG. 1, the pair of vertical grooves 51, 51 extend along the excretory part-facing middle / high area 41 and the rear middle / high area 42 from the front part A through the excretion part-facing part B to the rear part C. Is continuous in the vertical direction X, and has a continuous linear shape except for the portion that is bound inward in the horizontal direction Y in the vicinity of the boundary between the front portion A and the excretory portion facing portion B, and the entire vertical groove 51 Is substantially linear. The lateral groove 52 is located at the front portion A and is curved in a convex shape toward the front end in the longitudinal direction X of the main body 5 (napkin 1) in plan view. A convex top portion (front end in the longitudinal direction X of the lateral groove 52) 52 a of the lateral groove 52 is located at the center in the lateral direction Y of the main body 5. The entire lateral groove 52 is located on the front side in the longitudinal direction X with respect to the longitudinal front ends 51 a of the pair of longitudinal grooves 51, 51.

  Further, as shown in FIG. 1, the boundary 12D between the front non-stretchable region 12A and the stretchable region 12C of the elastic stretchable portion 12 in the front portion A is placed in the vertical direction X with the vertical front end 52a of the horizontal groove 52 or It is located on the rear side in the vertical direction X with respect to the vertical direction front end 52a. In other words, the horizontal groove 52 is placed in the same direction as the boundary 12D in the vertical direction X or is positioned on the front side in the vertical direction X with respect to the boundary 12D. When the positions of the boundaries 12D of the pair of three-dimensional gathers 10 and 10 are different from each other in the vertical direction X, the boundary 12D that is located on the relatively front side of the vertical direction X of both the boundaries 12D and 12D is In this case, it is only necessary that the horizontal groove 52 is located at the back of the vertical direction X with respect to the vertical direction front end 52a or the vertical direction front end 52a.

  In the present embodiment, as shown in FIG. 1, in addition to the vertical groove 51 and the horizontal groove 52, the groove further protrudes toward the rear end in the vertical direction X of the main body 5 (napkin 1) as shown in FIG. 1. Three curved grooves 53, 54, and 55 that are curved in this order are formed in this order from the front side to the rear side in the longitudinal direction X of the main body 5. The curved grooves 53, 54, and 55 are arranged at a predetermined interval in the vertical direction X by aligning the convex top portions 53 b, 54 b, and 55 b with the convex top portions 52 a of the horizontal grooves 52 (ie, the center in the horizontal direction Y of the main body 5). Is formed. The curved groove 53 is formed between the excretion portion-facing middle / high region 41 and the rear middle / high region 42, and the curved groove 54 is formed so as to surround the rear end side in the longitudinal direction X of the rear middle / high region 42. Is located at the end of the longitudinal direction X of the main body 5 (napkin 1). The excretory part facing middle / high region 41 is surrounded by a pair of longitudinal grooves 51, 51, a lateral groove 52, and a curved groove 53. The curved grooves 53 and 54 are not connected to the pair of vertical grooves 51 and 51, whereas the curved groove 55 is connected to the pair of vertical grooves 51 and 51, respectively. The end portions are connected to form an annular groove, and in the annular groove, the excretory part-facing middle / high region 41 (front upper layer absorber 46) and the rear middle / high region 42 (rear side upper layer absorber 47) are formed. positioned.

  In the above-described grooves 51 to 55, the top sheet 2 and the absorber 4 are integrated by heat fusion or the like. The grooves 51 to 55 can be formed according to a conventional method by embossing such as embossing with or without heat, or ultrasonic embossing.

  In the present embodiment, the napkin 1 (main body 5) is a lateral groove in the napkin 1 (main body 5) as shown in FIG. 5 in a natural state (a state in which the elastic member disposed on the napkin 1 is not extended). 52 from the skin facing surface (skin facing surface 2a of the top sheet 2) to the non-skin facing surface (non skin facing surface of the back sheet 3) from the center region in the lateral direction Y of the front end side region A1 located on the front side in the longitudinal direction X It has a dent S that is recessed toward 3b). That is, in the front end side region A1 of the napkin 1 (main body 5), the left and right side portions in the lateral direction Y are in a region near the center in the width direction Y (hereinafter referred to as the center region) sandwiched between the left and right side portions. On the other hand, it deform | transforms so that it may be located to the skin opposing surface side (surface sheet 2 side), and as a result of the deformation | transformation, the center area | region is depressed and the hollow part S is formed. In addition, in FIG. 5, a pair of substantially eight-shaped curved lines described as the boundary line of the hollow part S are drawn lines for expressing the hollow part S and the three-dimensional shape around it. It is not intentionally formed like the linear groove according to the invention, and such a curved line is not always actually formed. The front end side area A1 is configured to include the top sheet 2, the back sheet 3, and the absorber 4 (lower layer absorber 45) interposed between both sheets 2 and 3, and the recess S is configured in the same manner. Has been. This recess S fits flexibly to the front side (abdominal side) of the wearer's body and forms a pocket-like structure, thereby effectively preventing front leakage.

  For the formation of the hollow portion S, a three-dimensional gather 10 (elastic stretchable portion 12) and a pair of vertical grooves 51, 51 and a horizontal groove 52, which are linear grooves formed in the front portion A, are described below. It plays a particularly big role. First, when the napkin 1 is worn, as shown in FIG. 2, at least in the excretory part-facing part B by the tensile force in the vertical direction X by the elastic elastic parts 12, 12 having elasticity in the vertical direction X, as shown in FIG. 11 (standing part 14) stands up toward the wearer's skin with the joint 13 as a starting point. When the base wall portion 11 stands up, the lateral groove 52 acts as a flexible shaft that makes it easy to bend the main body 5 toward the topsheet 2 at that portion. In addition, as described above, the pair of elastic stretchable portions 12, 12 protrude from the upper end portion 11 a of the base wall portion 11 outward in the lateral direction Y (the side sheets 16 constituting the elastic stretchable portion 12 are When the base wall portion 11 stands up due to the fact that it has an outward folding shape that is bent outward in the lateral direction Y, the outer edges 12q of each of the pair of elastic elastic portions 12, 12 (free Side edge) is strongly pulled inward in the lateral direction Y. Accordingly, the pair of vertical grooves 51, 51, particularly the vertical front ends 51 a, 51 a and the vicinity thereof are pulled inward in the horizontal direction Y, and the tensile force acts on the horizontal grooves 52. The movement of the elastic expansion / contraction part 12 and the longitudinal groove 51 and the lateral groove 52 interlocked inward in the lateral direction is not until the lateral groove 52 is properly arranged in relation to the elastic expansion / contraction part 12 as will be described later. To express. Thus, when the base wall portion 11 of the three-dimensional gather 10 stands, the lateral groove 52 acts as a flexible shaft and elastically expands and contracts in each of the pair of longitudinal grooves 51, 51 located in the vicinity of the lateral groove 52. Due to the outer folding shape of the portion 12, a force that pulls the longitudinal groove 51 inward in the lateral direction Y acts, so that as shown in FIG. In the vicinity thereof, the surface sheet 2 is bent and curved, and a recess S is formed on the front side in the vertical direction X from the front ends of the vertical front ends 51a and 51a of the pair of vertical grooves.

  As described above, the recess S is formed in such a manner that each of the pair of elastic stretchable portions 12, 12 protrudes outward in the lateral direction Y from the upper end portion 11 a of the base wall portion 11. Therefore, when the elastic stretchable part 12 has a shape other than the outer folded shape, the recessed part S is hardly formed. For example, the elastic expansion / contraction part is composed of an outer elastic expansion / contraction part that protrudes outward in the lateral direction from the upper end of the base wall part, and an inward elastic expansion / contraction part that protrudes inward, as shown in FIG. In the cross-sectional view taken along the line, when standing up so as to form a T shape together with the upright portion of the base wall portion, the above-described tensile force pulling the longitudinal groove 51 (lateral groove 52) inward in the lateral direction Y is applied. Since it is hard to generate | occur | produce, the hollow part S is hard to be formed.

  In addition, as described above, the formation of the recessed portion S also requires that the vertical groove 51 and the horizontal groove 52 be appropriately disposed in relation to the elastic stretchable portion 12, and specifically, in the front portion A. The boundary 12D between the front non-stretchable region 12A and the stretchable region 12C of the elastic stretchable portion 12 is placed in the longitudinal direction X with the longitudinal front end (convex top portion of the lateral groove 52) 52a of the lateral groove 52 or from the longitudinal front end 52a. Is also required to be located on the rear side in the vertical direction X. In the present embodiment, as shown in FIG. 1, the boundary 12 </ b> D is in the same position as the longitudinal front end 52 a of the lateral groove 52 in the longitudinal direction X. When the boundary 12D is located in the longitudinal direction X in front of the longitudinal direction end 52a of the lateral groove 52 in the longitudinal direction X, the elastic expansion / contraction part 12, the longitudinal groove 51, and the lateral groove 52 in the lateral direction Y described above. The inwardly linked movement is difficult to appear and the hollow portion S is difficult to be formed.

  When the boundary 12D between the front non-stretchable region 12A and the stretchable region 12C is located behind the longitudinal front end 52a of the lateral groove 52 in the longitudinal direction X, the longitudinal direction of the boundary 12D and the lateral groove 52 The distance in the longitudinal direction X from the front end 52a is preferably within 10 mm, more preferably within 5 mm.

  A flexible shaft extending in the horizontal direction Y is formed in a portion of the absorber 4 (lower layer absorber 45) located in the front end side area A1 (area located on the front side in the vertical direction X from the horizontal groove 52). The flexible shaft extending in the lateral direction Y makes the absorbent body 4 (lower layer absorbent body 45) easily bendable in the longitudinal direction X at that portion, so that the recess S is more reliably formed. In this embodiment, as shown in FIG. 5, the formation part (lateral groove 52) of the horizontal groove 52 in the absorber 4 (lower layer absorber 45) functions as a flexible shaft.

  As the method for forming the flexible shaft, as in the present embodiment, i) a groove is formed on the absorber by embossing or the like, and the groove is used as a flexible shaft. For example, ii) A method of forming slits, narrow missing parts, cuts, etc. in the absorbent body and using them as flexible shafts, iii) Forming a part of the absorbent body with reduced constituent materials in a continuous line or intermittent line form In the present invention, one or a combination of two or more of these methods can be used.

  The depth of the lateral groove 52 functioning as a flexible shaft is preferably 1 mm or more, more preferably 2 mm or more, and preferably 10 mm or less, more preferably 5 mm or less, more specifically preferably 1 mm or more and 10 mm or less, More preferably, it is 2 mm or more and 5 mm or less. In addition, the depth of the horizontal groove 52 means the recessed depth of the horizontal groove 52 from the skin contact surface 2a which is not recessed in the surface sheet 2. FIG.

  The dimensions (width, depth, etc.) of each part of the groove according to the present invention may be measured with a naked eye using a ruler or the like, but preferably, a high accuracy with a high-speed, high-precision CCD laser displacement type installed. Measurement is performed using a shape measurement system KS-1100 (manufactured by Keyence Corporation). A measurement pitch is set to 5 μm, a moving speed is 10 cm / s, and a measurement range is specified and measured so as to include all of the skin facing surface and the measurement target groove in the top sheet. By analyzing the measured data using the shape analysis application KS-Analyzer (manufactured by Keyence Corporation) attached to the KS-1100, the dimensions of each part of the groove can be calculated.

  In the present embodiment, as shown in FIG. 1, the longitudinal rear end 41 b of the excretion-part-facing middle / high region 41 (front upper layer absorber 46) is not stretched of the three-dimensional gather 10 (elastic stretchable part 12) in the rear part C. A distance P between the vertical rear end 41b of the excretory part-facing middle and high region 41 and the boundary 12E at the rear part C (see FIG. 1), which is located in front of the boundary 12E between the region 12B and the stretchable region 12C. ) Is longer than the standing height Q of the three-dimensional gather 10 (see FIG. 2). Here, the “standing height of the three-dimensional gather” means that the skin facing surface 2a (middle height region) of the top sheet 2 of the outer edge 12q (free side edge) of the elastic stretchable part 12 in the natural state of the napkin 1 is formed. If it is, it means the height from the skin facing surface in the middle-high area. When the standing heights of the three-dimensional gathers 10 are partially different, the standing height Q is the maximum standing height at the portion where the standing height is the maximum. Since the napkin 1 has such a configuration, the three-dimensional gather 10 can easily stand up, so that the leak-proof effect of the three-dimensional gather 10 can be more reliably achieved, and the formation of the recessed portion S is further facilitated. Become.

  Further, in the present embodiment, as shown in FIG. 1, the longitudinal front end 41 a of the excretion-part-facing middle-high region 41 (front upper layer absorbent body 46) It is located on the rear side in the vertical direction X with respect to the boundary 12D between the stretchable region 12A and the stretchable region 12C. When the napkin 1 has such a configuration, the three-dimensional gather 10 is combined with the above-described operational effect by adopting a specific positional relationship between the vertical rear end 41b of the excretion portion facing middle and high region 41 and the boundary 12E. As a result, it is possible to more reliably achieve the stand-up property and the leakage prevention effect, and to further facilitate the formation of the recessed portion S.

The separation distance P (see FIG. 1) between the longitudinal rear end 41b of the excretory part facing middle and high region 41 and the boundary 12E in the rear part C is preferably 5 mm or more, more preferably 10 mm or more, and preferably 100 mm or less, The thickness is preferably 60 mm or less, more specifically, preferably 5 mm or more and 100 mm or less, and more preferably 10 mm or more and 60 mm or less.
The standing height Q (see FIG. 2) of the three-dimensional gather 10 is preferably 1 mm or more, more preferably 2 mm or more, and preferably 40 mm or less, more preferably 35 mm or less, more specifically preferably 1 mm or more and 40 mm. Hereinafter, it is more preferably 2 mm or more and 30 mm or less.
The difference (PQ) between the separation distance P and the standing height Q is preferably 4 mm to 60 mm, and more preferably 8 mm to 30 mm.

  In the present embodiment, as shown in FIG. 6, the skin facing part of the absorbent body 4 (the lower layer absorbent body 45) located in the depression S (front end side region A <b> 1 located on the front side in the longitudinal direction X from the lateral groove 52). A large number of dot-like recesses 48 are formed in a scattered manner on the surface 4a. The dot-shaped recess 48 has a substantially perfect circle shape when seen in a plan view, and is uniformly formed in the entire region of the lower layer absorber 45 located in the recess S (front end side region A1). The recess 48 has a bottom portion between the skin facing surface 4a and the non-skin facing surface (not shown) of the lower layer absorber 45, and is not a through-hole penetrating the lower layer absorber 45 in the thickness direction. The concave portion 48 is formed only in the lower layer absorbent body 45 and is not formed in the topsheet 2. Therefore, even when the skin facing surface side of the napkin 1 is visually observed, the concave portion 48 is difficult to confirm. In this way, when a large number of dot-like recesses 48 are formed in the portion located in the recess portion S in the lower layer absorber 45, the flexibility of the portion increases, so that the formation of the recess portion S is further increased. It becomes easy. The concave portion 48 can be formed according to a conventional method by embossing such as embossing with or without heat, or ultrasonic embossing.

The diameter of the dot-shaped recess 48 is preferably 0.1 mm or more, more preferably 0.2 mm or more, and preferably 50 mm or less, more preferably 20 mm or less, more specifically preferably 0.1 mm or more and 50 mm. Hereinafter, it is more preferably 0.2 mm or more and 20 mm or less.
The number of the dot-shaped concave portions 48 per unit area (1 cm ² ) is preferably 0.01 or more, more preferably 0.08 or more, and preferably 3185 or less, more preferably 796 or less, and more. Specifically, it is preferably 0.01 or more and 3185 or less, more preferably 0.08 or more and 796 or less.

  In the present embodiment, as shown in FIGS. 1, 5, and 6, linear concave portions 21 extending in the direction intersecting the vertical direction X and the horizontal direction Y are latticed on the skin facing surface 2 a of the topsheet 2. The topsheet 2 is partitioned into a large number of regions by the recesses 21. The recess 21 is provided in the top sheet 2 and is not provided integrally with the absorber 4, and is different from the vertical groove 51, the horizontal groove 52, and the curved grooves 53, 54, and 55. The concave portion 21 is formed in the entire area of the skin facing surface 2a of the topsheet 2. The region partitioned by the concave portion 21 is a convex portion that protrudes more toward the wearer's skin than the concave portion 21. The concave portion 21 is formed by pressure bonding or bonding the constituent fibers of the topsheet 2. Examples of means for crimping the fibers include embossing with or without heat, ultrasonic embossing, and the like.

  Thus, when the linear recessed part 21 extended in the direction which cross | intersects both the vertical direction X and the horizontal direction Y is formed in the skin opposing surface 2a of the surface sheet 2, the natural state of the napkin 1 or At the time of wearing, the front end side area A1 of the napkin 1 (main body 5) is placed on the napkin 1 along the linear direction of the recess 21 (direction intersecting both the vertical direction X and the horizontal direction Y). Since the tensile force pulling inward is likely to act, the front end region A1 is easily curved toward the topsheet 2 side, and the formation of the recessed portion S is facilitated. In addition, it becomes easier to form a cup-shaped structure integrally formed by the hollow portion S and the pair of three-dimensional gathers 10 and 10 located on the left and right sides thereof, and the fit and leakage resistance are further improved. To do. Temporarily, when the linear recessed part 21 is extended in the vertical direction X or the horizontal direction Y, the bending induction effect of the front end side area | region A1 by such a recessed part 21 is hard to express. Further, as another advantage that the linear concave portions 21 are formed in a lattice shape on the skin facing surface 2a of the top sheet 2, a case where such a lattice pattern is not formed on the skin facing surface 2a at all. Compared to the above, it is easy to visually confirm the shape of the depression S and the formation of the cup-like structure.

  Like the sanitary napkin of this type, the napkin 1 of the present embodiment is folded in the vertical direction X before use to form an individual body. In the napkin 1, since the horizontal groove 52 functions as a flexible shaft extending in the horizontal direction Y as described above, the napkin 1 (main body 5) is taken along the first folding line L1 extending in the horizontal direction Y through the horizontal groove 52. Can be easily folded in the longitudinal direction X. Further, in the napkin 1, the excretory part facing middle / high area 41 and the rear middle / high area 41 (rear upper layer) are arranged at the rear side in the longitudinal direction from the rear end 41b of the excretion part facing middle / high area 41 (front upper layer absorbent body 46). Since the region sandwiched between the absorbers 47) has lower rigidity than before and after the longitudinal direction X of the region, the imaginary straight line extending in the lateral direction Y through the region is flexible in the lateral direction Y. Therefore, the napkin 1 (main body 5) is easily bent in the longitudinal direction X not only at the first folding line L1 but also at the second folding line L2 (see FIG. 1) that coincides with the virtual straight line. be able to. As shown in FIG. 1, the second folding line L <b> 2 in this embodiment passes through the rear end of the longitudinal direction X of the curved groove 53 formed between the excretory portion facing middle and high regions 41 and the rear middle and high regions 42. It extends in the direction Y.

  The napkin 1 according to the present embodiment is used by being worn on clothes such as shorts in the same manner as a known sanitary napkin having a wing portion and a rear flap portion. The napkin 1 of the present embodiment has the above-described configuration, and the cup-like structure is formed in the front part A by the pair of left and right three-dimensional gathers 10 and 10 and the recessed part S when worn. Because it fits flexibly to the front side (abdominal side) of the wearer's body, even when the wearer is in a position that tends to cause pre-leakage (for example, when lying down or lying down sideways) It is confined in the cup-shaped structure and is difficult to leak to the outside, and pre-leakage is effectively prevented.

  When the formation material of each part in the napkin 1 is demonstrated, the various things conventionally used in the said technical field can be especially used as the surface sheet 2 and the back surface sheet 3 without a restriction | limiting. As the surface sheet 2, for example, liquid permeable sheets such as various nonwoven fabrics and perforated films subjected to a hydrophilic treatment can be used. The back sheet 3 may be liquid-impermeable or liquid-permeable, for example, a resin film that does not have moisture permeability, a resin film that has micropores and moisture permeability, and a nonwoven fabric such as a water-repellent nonwoven fabric, A laminate of the sheet and other sheets can be used.

  As materials constituting the absorbent body 4 (the lower layer absorbent body 45, the upper layer absorbent bodies 46 and 47), various materials conventionally used in the technical field can be used without particular limitation. For example, wood pulp, synthetic fiber A fiber assembly made of hydrophilic fibers such as fibers, or a fiber assembly in which a particulate superabsorbent resin is held can be used. The absorbent body 4 includes a liquid-retaining absorbent core (not shown) made of the fiber assembly and the like, and a liquid-permeable core wrap sheet (not shown) that covers the absorbent core. In this case, the absorbent core and the core wrap sheet may be joined to each other by a joining means such as a hot-melt pressure-sensitive adhesive at a predetermined site. As a core wrap sheet which coat | covers an absorptive core, paper, such as tissue paper, various nonwoven fabrics, an apertured film, etc. can be used, for example.

  As the side sheet 16 constituting the three-dimensional gather 10, various types conventionally used in the technical field can be used without particular limitation. For example, a water-repellent nonwoven fabric, a sheet made of a resin film, a nonwoven fabric, and the like A laminate with a resin film or the like can be used. In particular, it is preferable to use a water-repellent air-through non-woven fabric from the viewpoint of touch and prevention of lateral leakage. In addition, as the elastic member 15 disposed in the elastic stretchable part 12, various members conventionally used in the technical field can be used without particular limitation, and may be thread-like or belt-like.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, the curved grooves 53, 54, and 55 may be omitted. The sanitary napkin according to the present invention may not have a wing part, may not have a rear flap part, or may not have a wing part and a rear flap part. good. Further, the absorbent article of the present invention may be a panty liner (origami sheet), an incontinence pad, or the like.

  In addition, specific preferred embodiments of the present invention are as follows.

[1] A longitudinal sheet corresponding to the wearer's front-rear direction, including a top sheet that forms a skin facing surface, a back sheet that forms a non-skin facing surface, and a main body that includes an absorbent body interposed between the two sheets. An excretory part facing part disposed opposite to the excretion part of the wearer at the time of wearing, a front part disposed on the abdomen side of the wearer relative to the excretion part facing part, and the excretion An absorbent article in the longitudinal direction having a rear part arranged on the back side of the wearer rather than a part facing part, wherein the top sheet and the absorber are on the skin facing surface of the main body in the front part. A pair of vertical grooves extending in the vertical direction and a horizontal groove extending inward in the horizontal direction from the longitudinal front end of the vertical groove are formed as linear grooves that are integrally recessed toward the back sheet side. And at least the excretory part pair on the left and right side parts along the longitudinal direction of the main body. A pair of three-dimensional gathers are provided to stand toward the wearer's skin when worn on the part, and the three-dimensional gathers are connected to the base wall part and the upper end part of the base wall part, along the longitudinal direction. The elastic member includes an elastic expansion / contraction part that is arranged in an extended state, and the elastic expansion / contraction part protrudes laterally outward from the upper end of the base wall part, The inner edge along the longitudinal direction is connected to the upper end, and the outer edge along the longitudinal direction of the elastic stretchable part is not joined to other components of the absorbent article, forming a free side edge. Each of the front portion and the rear portion has a non-stretchable region in which the elastic stretchable portion at the longitudinal end of the three-dimensional gather is joined to the main body and its stretchability is inhibited, and the non-stretchable region The elasticity of the elastic expansion / contraction part located inward in the vertical direction is hindered. There is a harmless stretchable region, and the boundary between the non-stretchable region and the stretchable region in the front portion is placed in the longitudinal direction with the longitudinal front end of the transverse groove or from the longitudinal front end. An absorbent article that is also located on the rear side in the vertical direction.

[2] In the natural state, the absorbent article has a recessed portion that is recessed from the skin facing surface toward the non-skin facing surface in the lateral central region of the front end side region located on the front side in the longitudinal direction from the lateral groove. The absorbent article according to the above [1].
[3] The absorbent article according to [2], wherein a flexible shaft extending in a lateral direction is formed in a portion of the absorbent body located in the front end side region.
[4] The absorbent article according to [3], wherein the lateral groove acts as a flexible shaft.

[5] The absorbent article according to any one of [1] to [4], wherein the depth of the lateral groove is 1 mm or more and 10 mm or less.

[6] As described in any one of [2] to [5], a large number of dot-like concave portions are formed in a scattered manner on the skin-facing surface of the portion located in the hollow portion of the absorber. Absorbent article.

[7] The absorbent article according to [6], wherein the dot-shaped recess has a diameter of 0.1 mm to 50 mm.
[8] The absorbent article according to [6] or [7], wherein the number of the dot-shaped recesses per 1 cm ² is 0.01 or more and 3185 or less.

[9] The absorbent body has a middle and high portion whose lateral central portion is thicker than the surrounding region and protrudes toward the skin facing surface side, and the middle and high portion passes vertically through the excretory portion facing portion. An excretion part facing middle and high region extending in the direction, the longitudinal rear end of the excretion part facing middle and high region is located on the front side in the longitudinal direction from the boundary between the non-stretchable region and the stretchable region in the rear part, And the separation distance of the vertical direction rear end of this excretion part opposing middle-high area | region and this boundary in this back part is longer than the standing height of the said solid gathers, It is any one of said [1]-[8] Absorbent article.

[10] The absorbent article according to [9], wherein a separation distance between a longitudinal rear end of the excretion portion facing middle and high regions and the boundary in the rear portion is 5 mm or more and 100 mm or less.

[11] The absorbent article can be bent in a vertical direction along a virtual straight line that extends in the horizontal direction through the rear side in the vertical direction from the rear end in the vertical direction of the middle and high regions facing the excretory part. ] Or the absorbent article as described in [10].
[12] On the skin facing surface of the topsheet, linear concave portions extending in a direction intersecting the vertical direction and the horizontal direction are formed in a lattice shape, and the topsheet is formed into a plurality of regions by the concave portions. The absorbent article according to any one of [1] to [11], which is partitioned.

[13] The absorber includes a lower layer absorber extending from the front part through the excretory part opposing part to the rear part, and a lateral central part of the lower layer absorbent in the excretion part opposing part. Any one of the above-mentioned [9] to [12], comprising an upper layer absorber (front upper layer absorber) disposed on the skin facing surface and having a lateral length shorter than that of the lower layer absorber. Absorbent article as described in 1.
[14] The upper absorbent body, wherein the absorbent body is further disposed on the skin-facing surface in the lateral center of the lower layer absorbent body in the rear part and has a shorter lateral length than the lower layer absorbent body. The absorbent article according to the above [13], comprising a (rear upper layer absorbent body).
[15] The vertical front end of the excretion part-facing middle and high region is located on the rear side in the vertical direction with respect to the boundary between the non-stretchable region and the stretchable region in the front part. The absorbent article as described in any one.

1 Sanitary napkin (absorbent article)
2 Top sheet 3 Back sheet 4 Absorber 5 Main body 10 Three-dimensional gather 11 Base wall 12 Elastic stretchable part 12p Inner edge 12q of elastic stretchable part Outer edge 12A of elastic stretchable part Front non-stretchable area 12B Rear non-stretchable area 12C Stretchable area 12D, 12E Boundary 15 between the non-stretchable region and the stretchable region 15 Elastic member 16 Side sheet 21 Linear concave portion 41 Middle part region opposite to excretion part 42 Rear middle high region 45 Lower layer absorber 46 Front side upper layer absorber 47 Rear side upper layer absorber 48 dots Shaped recess 51 Vertical groove 51a Vertical front end 52, 52A, 52B of vertical groove Horizontal groove 52a Vertical front end 53, 54, 55 of horizontal groove Curved groove A Front part A1 Front end side area B Excretion part facing part C Rear part S Curved part X Vertical direction Y Horizontal direction

Claims (5)

A body comprising a top sheet that forms a skin facing surface, a back sheet that forms a non-skin facing surface, and an absorbent body interposed between the two sheets, and perpendicular to the longitudinal direction corresponding to the wearer's longitudinal direction An excretory part facing part disposed opposite to the excretion part of the wearer when worn, a front part disposed on the abdomen side of the wearer relative to the excretion part facing part, and the excretion part facing part It is an absorbent article having a rear part arranged in the wearer's back side in the longitudinal direction,
A pair of vertical grooves extending in the vertical direction as linear grooves formed by integrally concave the top sheet and the absorber toward the back sheet side on the skin facing surface of the main body in the front portion; A lateral groove that is continuous from the longitudinal front end of the longitudinal groove and extends inward in the lateral direction is formed;
A pair of three-dimensional gathers that stand toward the wearer's skin when worn at least at the excretory part-facing part are provided on the left and right side parts along the longitudinal direction of the main body, the three-dimensional gathers, And an elastic expansion / contraction portion connected to the upper end portion of the base wall portion and having an elastic member arranged in an elongated state along the longitudinal direction,
The elastic expansion / contraction portion protrudes laterally outward from the upper end portion of the base wall portion, does not protrude laterally inward, and the inner edge along the vertical direction of the elastic expansion / contraction portion extends to the upper end portion. The outer edge along the longitudinal direction of the elastic stretch part is connected and is not joined to other constituent members of the absorbent article, forming a free side edge,
The elastic part at the longitudinal end of the three-dimensional gather is joined to the main body in a state of projecting outward from the upper end of the base wall part to the front part and the rear part, respectively. There is a non-stretchable region in which stretchability is inhibited, and a stretchable region that is located inward in the longitudinal direction of the non-stretchable region and in which the stretchability of the elastic stretchable portion is not hindered,
The boundary between the non-stretchable region and the stretchable region in the front portion is located in the longitudinal direction with the longitudinal front end of the transverse groove or on the longitudinal rear side with respect to the longitudinal front end ,
The absorbent body has a middle-high portion whose central portion in the lateral direction is thicker than the surrounding region and protrudes toward the skin facing surface, and the middle-high portion extends in the vertical direction through the excretory portion-facing portion. Including the middle and high areas facing the excretion part,
The vertical front end of the excretion part facing middle and high region is located on the rear side in the vertical direction with respect to the boundary between the non-stretchable region and the stretchable region in the front part,
The longitudinal rear end of the excretion part facing middle and high region is located on the front side in the longitudinal direction from the boundary between the non-stretchable region and the stretchable region in the rear part,
On the skin facing surface of the topsheet, linear concave portions extending in the direction intersecting the vertical direction and the horizontal direction are formed in a lattice shape, and the topsheet is partitioned into a number of regions by the concave portions. And
In the natural state, the absorbent article has a recessed portion that is recessed from the skin facing surface toward the non-skin facing surface in the lateral central region of the front end side region located on the front side in the longitudinal direction from the lateral groove. Absorbent article. The portion located on the front end side region of the absorbent body, the absorbent article according to claim 1, wherein the flexible shaft extending in the transverse direction is formed. The absorptive article according to claim 1 or 2 by which many dot-like crevices are formed in the skin facing surface of the portion located in said hollow part in said absorber at many scattered points. Before the longitudinal rear end of Sharing, ABS泄部facing convex areas, the distance between the boundary between the non-stretchable region and the expansion region in the rear portion, the stereoscopic longer claim than the standing height of the gathers 1-3 The absorbent article as described in any one of these. The absorbent article is longitudinally by imaginary line extending laterally through the longitudinal rear side of the rear end, the absorption according to claim 4, characterized in that made foldably longitudinally of the excretion portion facing convex areas Sex goods.

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