JP2019103789A - Absorbent article - Google Patents

Abstract

To provide an absorbent article having high absorption speed of an absorber to a body fluid and excellent in shape retention of the absorber.SOLUTION: An absorber 23 has an absorbent core 231 and a nonwoven fabric core wrap sheet 232 (2321, 2322) for covering the absorbent core. The absorbent core 231 has at least one penetration gap part 6 so as to be provided on at least a crotch part C and extend in a vertical direction X, and the penetration gap part 6 penetrates the absorbent core 231 in a thickness direction. The absorbent core 231 has further a plurality of compression recess parts 7 extending in a linear state, and any one and other one of the plurality of compression recess parts 7 are directly communicated or communicated through one or more other compression recess parts 7. The penetration gap part 6 has a junction 61 where the core wrap sheet 2321 on a skin facing surface side and the core wrap sheet 2322 on a non-skin facing surface side are jointed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorbent article such as a disposable diaper.

  Heretofore, as absorbent articles such as disposable diapers, those having a longitudinally long absorbent main body provided with a top sheet, a back sheet and a liquid-retaining absorbent disposed between the both sheets are known. Usually, this absorbent body is configured by covering the absorbent core with a core wrap sheet made of water-permeable paper or non-woven fabric.

  In the pants-type absorbent article disclosed in Patent Document 1, a bending guiding portion 333 is provided in the absorbent core, and the bending guiding portion 333 is made of a material of the absorbent core such as pulp fiber. Unfilled parts, low basis weight parts of the material of the absorbent core are small compared to other parts, slits, etc., bending stiffness is reduced and both sides of the absorber are easy to stand up (patent document Figure 8 in 1). Further, in the absorbent article disclosed in Patent Document 2, a pressing portion 10 is provided in a plurality of small absorbent portions 8 divided by the groove 71 in the absorbent layer (see, for example, FIG. 3 of Patent Document 2). Thereby, the absorptivity with respect to a bodily fluid and diffusivity can be improved.

JP, 2011-78647, A JP, 2014-110887, A

  In the pants-type absorbent article described in Patent Document 1, the bending guiding portion 333 makes it easy for the both sides of the absorber to stand up, while the shape retention of the both sides of the absorber is reduced. If the absorbent body is repeatedly overwhelmed by the movement of the wearer's legs, there is a concern that the entire shape is likely to collapse. In addition, although the absorbent article described in Patent Document 2 is improved in absorbability and diffusion due to the configuration of the absorbent layer including the pressing portion 10, an absorbent article in which the absorption speed to body fluid is further improved is required. There is room for improvement.

  This invention is made in view of the said condition, and the absorption rate with respect to the bodily fluid of an absorber is high, and it aims at providing the absorptive article excellent in the shape retention property of an absorber.

  The present invention comprises a front sheet disposed on the skin-facing surface side, a back sheet disposed on the non-skin-facing surface side, and an absorber disposed between the two sheets, the belly side and the spine side And a longitudinal absorbent main body sectioned into the crotch, and having a longitudinal direction extending from the ventral side to the dorsal side through the crotch and a transverse direction orthogonal thereto. An absorbent article, wherein the absorbent body has a liquid-retaining absorbent core and a core wrap sheet for covering the absorbent core, the core wrap sheet is composed of a non-woven fabric, and the skin facing surface side The core wrap sheet and the non-skin facing surface side core wrap sheet, and the absorbent core is provided with at least one penetration gap portion so as to be provided at least in the crotch and extend in the longitudinal direction , And the through gap portion has a thickness direction in which the absorbent core Furthermore, a plurality of compression recesses are formed in the absorbent core, the plurality of compression recesses extend linearly, and any one and the other of the plurality of compression recesses are formed. One is in direct communication, or is in communication via one or more other compression recesses, and in the penetration gap portion, the core wrap sheet on the skin opposing surface side and the non-skin opposing surface side An absorbent article comprising a joint portion joined to the core wrap sheet of

  ADVANTAGE OF THE INVENTION According to this invention, the absorption rate with respect to the bodily fluid of an absorber is high, and the absorbent article excellent in the shape retention property of an absorber is provided. In the absorbent article of the present invention, the absorption speed of the absorbent to body fluid and the shape retention property of the absorbent are significantly enhanced as compared to the prior art by the through clearance portion and the compression recess formed in the absorbent. It is excellent in the damage resistance of the absorber, and the absorber is hard to break when worn.

FIG. 1 is a plan view showing the developed and extended state of the unfolded disposable diaper according to the embodiment of the present invention, as viewed from the skin-facing surface. FIG. 2 is a view schematically showing a cross section taken along line I-I of FIG. FIG. 3 is a view schematically showing a cross section taken along the line II-II in FIG. 1, and is a view showing a portion where the penetration gap portion and the compression recess intersect. FIG. 4 is a schematic view showing a specific example of a pattern (heat seal pattern) of a joint according to the present invention, and FIGS. 4 (a) to 4 (c) show that the joint is continuous in the longitudinal direction, respectively. 4 (d) to 4 (f) show patterns in which the joint portion is discontinuously drawn in the longitudinal direction, respectively. FIG. 5: is a figure which shows typically the cross section which follows the thickness direction of other embodiment of the absorber which concerns on this invention.

(Whole structure of absorbent article)
Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the attached drawings. One embodiment of the absorbent article of the present invention is the unfolded disposable diaper 1 (hereinafter, also referred to as "diaper 1") shown in FIGS. As shown in FIGS. 1 to 3, the diaper 1 has a liquid-permeable top sheet 21, a liquid-impermeable back sheet 22, and a longitudinally long shape disposed between the sheets 21 and 22, that is, a longitudinal direction X And the longitudinally long absorbent main body 2 divided into the ventral side A, the back side B and the crotch C. The ventral side A is a site placed on the ventral side of the wearer when worn, the dorsal side B is a site placed on the dorsal side of the wearer when worn, and the crotch C is an ventral side It is a part arranged between A and the dorsal side B.

  Further, as shown in FIG. 1, the diaper 1 has a longitudinal direction X extending from the belly side A via the crotch C to the back side B and a transverse direction Y orthogonal thereto. In the unfolded and stretched state of the diaper 1 as shown in FIG. 1, the longitudinal direction of the diaper 1 coincides with the longitudinal direction X, and the width direction of the diaper 1 coincides with the transverse direction Y. As shown in FIG. 1, the diaper 1 is formed symmetrically with respect to a center line CL which bisects the diaper 1 in the lateral direction Y and extends in the longitudinal direction X.

  Each of the top sheet 21 and the back sheet 22 covers the entire surface of the skin facing surface of the absorber 23 and the whole surface of the non-skin facing surface as shown in FIGS. 2 and 3 and extends from the periphery of the absorber 23 The extended portion is fixed to another component of the diaper 1 by fusion bonding such as an adhesive such as hot melt or heat sealing.

  In addition, a "skin opposing surface" is a surface distribute | arranged to a wearer's skin side at the time of wear among the both surfaces of each member which comprises the diaper 1, and the "non-skin opposing surface" means the diaper 1 It is a surface turned to the side opposite to a wearer's skin side at the time of wear among front and back both sides of each member to constitute.

  As shown in FIG. 1, an elastic side panel 3 extending outward in the lateral direction (Y direction) is attached to each of both sides along the longitudinal direction X of the back side B of the absorbent main body 2 Furthermore, a fastening tape 4 extending outward in the lateral direction is attached to the outer side of each side panel 3 (opposite to the side of the absorbent main body 2). On the non-skin facing surface of the ventral side A, a landing sheet 5 engaged with the fastening tape 4 is provided. At the time of wearing the diaper 1, by engaging the pair of fastening tapes 4 of the back side B with the landing sheet 5 of the ventral side A, the waist opening (not shown) and the pair of leg openings (see FIG. Not shown) is formed.

  In the diaper 1, a sheet 24 for forming a three-dimensional gather is disposed on each of both side portions along the longitudinal direction X of the absorbent main body 2. As shown in FIGS. 2 and 3, in the pair of three-dimensional gather forming sheets 24, one end side in the lateral direction Y is fixed to the other component to be a fixed end, and the other end side in the lateral direction Y is An elastic member 25 for forming a three-dimensional gather is disposed in an elongated state in the longitudinal direction X in the vicinity of the free end, when the diaper 1 is worn. By the contraction force of the elastic member 25 for forming the three-dimensional gather, the free end of the three-dimensional gather forming sheet 24 is raised to form a three-dimensional gather. Further, in the crotch C, elastic members 26 for forming a leg gather are disposed on both outer sides in the lateral direction Y of the elastic member 25 for forming a three-dimensional gather, and the leg gathers are formed when the diaper 1 is worn. Due to the contraction force of the elastic member 26, the leg gathers are formed laterally outside the solid gathers.

  As shown in FIGS. 2 and 3, the absorbent body 23 has a liquid-retaining absorbent core 231 and a core wrap sheet 232 which covers the absorbent core 231. In the diaper 1, the absorbent core 231 and the core wrap sheet 232 are fixed via an adhesive (not shown) to form the absorbent body 23. The absorber 23 is fixed to the top sheet 21 via an adhesive (not shown) and fixed to the back sheet 22 via an adhesive (not shown). The core wrap sheet 232 includes a core wrap sheet 2321 on the skin facing surface side and a core wrap sheet 2322 on the non-skin facing surface side. The two core wrap sheets 2321 and 2322 may be sheets independent of each other, that is, the entire absorbent core 231 may be wrapped by two core wrap sheets. Of course, it is also possible to constitute one core wrap sheet 232 by both core wrap sheets 2321 and 2322, and to wrap the whole of the absorbent core 231 by this one core wrap sheet. An adhesive for forming the absorber 23 is applied to at least one of the core wrap sheet 2321 on the skin facing surface side and the core wrap sheet 2322 on the non-skin facing surface side.

  In the absorbent core 231 of the diaper 1, as shown in FIG. 1, the left and right side edges along the longitudinal direction X of the crotch C are curved inward in the lateral direction Y, and as a whole, the longitudinal direction X The central part of the has an hourglass shape that is constricted. On the other hand, as shown in FIG. 1, the core wrap sheet 232 covering the absorbent core 231 has a linear shape in which the left and right side edges along the longitudinal direction X extend in the longitudinal direction X over the entire length, Not. Therefore, in the forming portion (portion located in the crotch C) of the narrow portion of the absorbent core 231 in the absorbent body 23, the length or width of the core wrap sheet 232 in the transverse direction Y is greater than the width of the absorbent core 231. long. In FIGS. 2 and 3 showing the cross section at the forming portion of the constricted portion, the absorbent core 231 and the core wrap sheet 232 are described as having the same width as each other, but these drawings are the entire configuration It is a schematic diagram for demonstrating, and the state of the core wrap sheet | seat 232 in the left-right-both-sides edge part of the narrow part of the absorptive core 231 is not necessarily shown exactly.

  The components of the disposable diaper 1 of the present embodiment will be described. The top sheet 21, the back sheet 22, and the absorbent 23 are not particularly limited as long as they are generally used for absorbent articles such as disposable diapers. be able to. As the top sheet 21, for example, a non-woven fabric that is hydrophilic and liquid-permeable can be used. As the back surface sheet 22, for example, a liquid impermeable or water repellent resin film, a laminate of a resin film and a non-woven fabric, or the like can be used. The resin film may have moisture permeability. As the absorbent core 231 constituting the absorbent body 23, for example, an aggregate or non-woven fabric of fibers such as pulp fibers can be used, or an aggregate or non-woven fabric of fibers holds particles of superabsorbent polymer Can be used.

  The core wrap sheet 232 constituting the absorbent body 23, that is, the core wrap sheet 2321 on the skin facing surface side and the core wrap sheet 2322 on the non-skin facing surface side are each made of non-woven fabric. As such non-woven fabric, water-permeable non-woven fabric is preferred. Conventionally, a core wrap sheet may be formed of water-permeable thin paper, but by forming the core wrap sheet by a water-permeable nonwoven fabric, the absorbent body is compared to the case where the core wrap sheet is a water-permeable thin paper. In the present invention, a water-permeable non-woven fabric is preferably employed as a component of the core wrap sheet in order to be able to increase the softness and the absorption rate to body fluid and to improve the air permeability. As a water-permeable nonwoven fabric, for example, a spunbond-meltblown-spunbond (SMS) nonwoven fabric can be exemplified.

  An adhesive for fixing the absorbent core 231 and the core wrap sheet 232, an adhesive for fixing the absorber 23 to the top sheet 21 and the back sheet 22, and a sheet 24 for forming a three-dimensional gather and the top sheet 21 are fixed. As each adhesive such as an adhesive, any adhesive can be used without particular limitation as long as it is generally used for an absorbent article such as a disposable diaper. For example, a hot melt adhesive can be used. The coating pattern of each adhesive is preferably coated by using a spray gun, a coater gun or the like, but pattern coating such as linear, spiral, omega or dot can also be performed.

(Structure of through clearance)
As shown in FIGS. 1 to 3, at least one penetration gap 6 is formed in the absorbent core 231 so as to be provided at least in the crotch C and to extend in the longitudinal direction X. The diaper 1 has two (one pair) penetration gap parts 6 in the absorbent core 231. The penetration gap 6 penetrates the absorbent core 231 in the thickness direction.

  In the present embodiment, a pair of the through clearances 6 is formed at the central portion in the lateral direction Y of the absorber 23 in the crotch C. As shown in FIG. 2, the pair of through clearances 6, 6 each have a rectangular shape in plan view as shown in FIG. 1, and the longitudinal direction thereof coincides with the longitudinal direction X. The penetration gap 6 may be disposed in the crotch C including at least the excretory part facing part facing the excretory part of the wearer's penis etc. For example, the end in the longitudinal direction X on the belly side A side is It can be disposed on the ventral side A, and the end in the longitudinal direction X on its dorsal side can be disposed on the dorsal side B. Further, the number of the through clearances 6 is not particularly limited, and may be one or three or more. Further, in the present embodiment, the pair of through clearances 6, 6 are formed symmetrically with respect to the center line CL, but in the case where a plurality of the through clearances 6 are formed, they are center lines CL in this manner. The through holes 6 may not be formed symmetrically with respect to each other, and the plurality of through gaps 6 may have different shapes and sizes in plan view. Moreover, although the length of the horizontal direction Y of the penetration clearance gap part 6 in this embodiment, ie, width, is constant in the longitudinal direction (longitudinal direction X), it is not necessary to be constant.

  The through gap portion 6 of the present embodiment is a groove (groove having no bottom portion) which penetrates the absorbent core 231 in the thickness direction, and is a region where there is no absorber forming material such as a water absorbing polymer or pulp fiber. However, in the through clearance 6, an absorbent-forming material having a significantly lower basis weight (for example, 1⁄4 or less) is present as compared to a through or non-compressed portion in the vicinity of the through clearance 6 in the absorbent core 231. (A groove having a bottom). For example, when forming an absorbent body (absorbent core) by stacking an absorbent body-forming material according to a conventional method using a known stacking device, the through gap portion 6 in the stacking device In the part corresponding to 6, the absorbent body-forming material is not piled up, or it is formed by making the piled amount of the absorbent body-forming material smaller than other parts.

  The length L1 (see FIG. 1) of the pair of through clearances 6, 6 in the longitudinal direction X is 20 of the length (total length) L2 (see FIG. 1) of the absorbent 23 (absorbent core 231) in the longitudinal direction. It is preferably 70%, particularly 30% to 60%. For example, when the total length L2 of the absorber 23 or the absorbent core 231 is 370 mm, the length L1 of the through gap 6 may be 140 mm.

  The length or width W1 (see FIG. 1) of the pair of through clearances 6, 6 in the lateral direction Y is 2 to 20% of the maximum length or maximum width W2 (see FIG. 1) of the absorber 23 in the lateral direction. And particularly preferably 4 to 10%. For example, when the maximum width W2 of the absorber 23 is 120 mm and the smallest width in the constricted portion (portion where the width in the absorber 23 decreases) is 70 mm, the width W1 of the through clearance 6 is 5 mm It is good. When the width W1 of the through clearance 6 is too large relative to the maximum width W2 of the absorber 23, a portion covered by the diaper 1 from outside can be easily visually recognized through the through clearance 6 during wearing of the diaper 1 And the designability of the entire absorbent article may be adversely affected. However, as described above, the width W1 of the through gap portion 6 is made much smaller than the maximum width W2 of the absorber 23 as described above. The occurrence of such inconvenience can be effectively prevented. The "absorbent 23" in the "maximum width W2 of the absorbent 23" can be replaced with the "absorbent core 231".

  Further, in the absorbent core 231 shown in FIG. 1, the width of the ventral side A is larger than the width of the dorsal side B. For example, when the width of the dorsal side B of the absorbent core 231 is 100 mm, the width of the ventral side A of the absorbent core 231 may be 120 mm. With this structure, the absorption and diffusion area in the ventral side A can be increased, and the effect of preventing fluid leakage in the ventral side A having a large amount of body fluid (urine) can be obtained. In addition, in the form shown in FIG. 1, the width | variety (width | variety of the core wrap sheet | seat 232) of the absorber 23 is constant over the full length.

  As shown in FIG. 1, each of the pair of through clearances 6, 6 has a portion (minimum width) where the width of the narrow portion of the absorbent core 231 is smallest in the lateral direction Y by about 1/3 in the lateral direction Y The dividing line is located when divided into. The minimum width of the constriction of the absorbent core 231 is located at the crotch C. Specifically, a center line VL virtually extending in the longitudinal direction X through the centers of the two through clearances 6 and 6 in the lateral direction Y corresponds to the minimum width portion of the constriction portion of the absorbent core 231. Divide into about three equal parts in the horizontal direction Y. 1) the lateral direction Y of the center line VL of the through gap 6 on the left side (one side) in the lateral direction Y and the left side edge (the side edge on the one side) of the minimum width part of the narrow portion of the absorbent core 231; And 2) between the center line VL of the through gap 6 on the right side (the other side) in the lateral direction Y and the right side edge (the side edge on the other side) of the minimum width portion of the constricted portion of the absorbent core 231. The separation distance in the lateral direction Y and 3) the spacing in the lateral direction Y between the center lines VL and VL of the pair of through clearances 6, 6 are substantially equal. For example, when the width of the minimum width of the narrow portion of the absorbent core 231 is 70 mm, the distance between the center lines VL and VL of the two through gaps 6, 6 in the lateral direction Y is about 23 mm. preferable. The actual numerical value of the distance between the center lines VL and VL of the two through gaps 6, 6 in the lateral direction Y may have a manufacturing error. In this case, it is preferable that this error be in the range of ± 3 mm, in particular ± 1 mm.

  As described above, by forming the through gap portion 6 in the absorbent core 231 located in the crotch C including the discharge portion facing portion facing the discharge portion of the wearer, a flat in which the through gap portion 6 is not formed Compared with the absorber of the above, the absorption speed of the body fluid can be greatly improved, and problems such as wet feeling and rash due to contact between the skin and urine can be reduced.

  The diaper 1 includes the core wrap sheet 2321 on the skin facing surface side covering the skin facing surface side of the absorbent core 231 and the core on the non-skin facing surface side covering the non-skin facing surface side of the absorbent core 231 in the penetration gap portion 6 It has a joint portion 61 to which the wrap sheet 2322 is joined.

  In the present embodiment, as shown in FIG. 2 and FIG. 3, the bonding portion 61 is located on the non-skin facing surface side (the back sheet 22 side) in the thickness direction of the absorber 23. That is, the core wrap sheet 2321 covering the skin facing surface side of the absorbent core 231 is recessed along the wall portion constituting the through gap portion 6 at the formation position of the through gap portion 6 and protrudes toward the non-skin facing surface side Further, the protruding portion of the core wrap sheet 2321 toward the non-skin facing surface side is joined to the core wrap sheet 2322 covering the non-skin facing surface side of the absorbent core 231 at the formation position of the through gap 6. Then, a joint 61 of the two core wrap sheets is formed.

  In the present embodiment, the joint portion 61 of the two core wrap sheets is thus positioned on the non-skin opposing surface side in the thickness direction of the absorber 23, but the point is that the core on the skin opposing surface side is It is only necessary that the wrap sheet 2321 and the core wrap sheet 2322 on the non-skin opposing surface side be joined at the through gap portion 6 to form the joining portion 61, and the joining portion 61 is a skin opposing surface in the thickness direction of the absorber 23. It may be located on the side, or may be located at the center in the thickness direction of the absorber 23. Here, “the skin facing surface side, the central portion, the non-skin facing surface side in the thickness direction of the absorber 23” refers to the through gap portion 6 in the absorber 23 and the non-forming portion of the compression recess 7 described later It means each part when divided into three equal parts. For example, “the bonding portion 61 is located on the non-skin facing surface side in the thickness direction of the absorber 23” means the non-skin facing surface of the non-forming portion of the through gap portion 6 and the compression recess 7 in the absorber 23. Therefore, it means that the bonding portion 61 is located in a region extending in the thickness direction of the non-formed portion and at a distance apart corresponding to 1/3 of the thickness of the non-formed portion. By positioning the joint portion 61 on the non-skin facing surface side in the thickness direction of the absorber 23, the absorbed liquid is conducted more quickly to the non-skin facing surface of the absorber 23, and It can be absorbed more efficiently.

  In the present embodiment, the joint portion 61 between the core wrap sheet 2321 on the skin facing surface side and the core wrap sheet 2322 on the non-skin facing surface side is present in substantially the entire length of the through gap portion 6 in the longitudinal direction X. . Here, “substantially the entire length” means that it is 90% or more of the full length (length L1) of the through gap portion 6 in the longitudinal direction X.

The bonding portion 61 is formed, for example, as follows.
First, a position corresponding to the through clearance 6 in at least one of the two sheets of the core wrap sheet 2321 facing the skin and the core wrap sheet 2322 not facing the skin (the through clearance in plan view) Apply an adhesive such as a hot melt adhesive at a position overlapping with 6. The application area ratio of the adhesive in the through gap portion 6 is preferably 10% to 100%, particularly 20% to 80%. For example, 50%. The coated area ratio of the adhesive is a ratio of the coated area of the adhesive to the area of the position corresponding to the through gap portion 6 in the core wrap sheet 232 in 100 percent.
Next, after the absorbent core 231 is wrapped with the two core wrap sheets 2321 and 2322 to obtain the absorbent body 23, the heat and pressure treatment is performed on the through gap portion 6 of the absorbent body 23 to obtain two sheets. The core wrap sheets are joined together to form a joint 61. Specifically, for example, in the case where the bonding portion 61 is positioned on the non-skin facing surface side of the absorber 23 as in the present embodiment, the penetrating clearance portion 6 is provided from the skin facing surface side of the absorber 23 The heat seal roller is pressed, and the core wrap sheets 2321 and 2222 of two sheets are joined at the through gap portion 6 by heat seal processing to form a joint portion 61. The area ratio of heat sealing (heating and pressing) in the through gap portion 6 is preferably 20% to 100%, particularly 40% to 80%. For example, 60%. The area ratio of the heat sealing process is a ratio of the area of the processed portion, that is, the bonding portion 61 to the area of the position corresponding to the through gap portion 6 in the core wrap sheet 232, expressed in percentage. By performing the heating and pressing process as described above, the two core wrap sheets 2321 and 2322 are joined more strongly. In the present specification, "heat seal" includes not only heat seal but also high frequency seal and ultrasonic seal.

  As described above, the bonding portion 61 at the through gap 6 between the core wrap sheet 2321 on the skin facing surface side and the core wrap sheet 2322 on the non-skin facing surface side uses an adhesive such as a hot melt adhesive. And, it can be formed by heat and pressure treatment such as heat seal processing. In the bonding portion 61 thus formed, the two core wrap sheets are bonded together via an adhesive and are melt bonded by heat and pressure treatment. As described above, using both the hot melt adhesive and the heat seal processing is superior to the case where only one of them is used, and the bonding effect between the core wrap sheets is excellent, and the absorber Can be made more stable.

  The pattern (the shape and the arrangement in plan view of the bonding portion 61) of the bonding portion 61 formed by using a heating and pressing process such as heat sealing is not particularly limited, and various patterns can be taken. The specific example of the pattern (The heat seal pattern of the junction part 61 formed by heat seal processing) of the junction part 61 is shown by FIG. In a plan view of the absorber 23 (penetration gap portion 6), for example, a “solid pattern” shown in FIG. 4A as a heat seal pattern in which the bonding portion 61 extends continuously in the longitudinal direction X 4 (b), “a pattern in which the bonding portion 61 in the form of a broken line in a plan view extends continuously in a longitudinal direction X”, a pattern in which the bonding portion 61 exists over the entire area of the penetration gap 6 in plan view); A “pattern in which the bonding portion 61 in the shape of a curved surface in plan view is continuously stretched in the longitudinal direction X” illustrated in FIG. Also, as a heat seal pattern in which the bonding portion 61 extends discontinuously in the longitudinal direction X (a plurality of bonding portions 61 are intermittently arranged in the longitudinal direction X), FIG. There is a pattern in which the junctions 61 of dots, stripes and curves shown in FIG. More specifically, in FIG. 4D, dot-like (more specifically, rhombus-like) junctions 61 are intermittently arranged in both the longitudinal direction X and the lateral direction Y, and in FIG. A stripe-shaped bonding portion 61 extending in a direction crossing not orthogonal to both the longitudinal direction X and the lateral direction Y is intermittently arranged in the longitudinal direction X, and in FIG. 4F, one side in the longitudinal direction X A convex arc-shaped joint 61 and a convex arc-shaped joint 61 are alternately arranged intermittently in the longitudinal direction X. A particularly preferable pattern of the bonding portion 61 (heat seal pattern) is a pattern which is discontinuously drawn in the longitudinal direction X as shown in FIG. 4 (d) to FIG. 4 (f). Compared with the pattern continuously extended in the longitudinal direction X as shown to (a)-FIG.4 (c), the softness | flexibility of the junction part 61 is heightened.

  As described above, the absorbent core 231 can be fixed by bonding the core wrap sheet 2321 on the skin facing surface side and the core wrap sheet 2322 on the non-skin facing surface side to the through gap portion 6, and the absorbent core can be fixed. Since it becomes difficult to move 231, the entire shape of the absorber 23 becomes stable and is not easily damaged. In addition, as described above, in the lateral direction Y, each of the pair of through clearances 6 and 6 is positioned at about 1/3 of a portion (minimum width portion) where the width of the narrow portion of the absorbent core 231 is the smallest. Thus, the absorber 23 (the absorbent core 231) has symmetry as a whole and has a good balance, so that the stability of the shape is enhanced and it is further difficult to be damaged.

(Structure of compression recess)
As shown in FIGS. 1 to 3, the absorbent core 231 is formed with a plurality of compression recesses 7. The compression recess 7 has a linear shape extending in one direction in plan view as shown in FIG. 1, and the number of lines continuous in one direction is the number of compression recesses 7.

  The compression recess 7 is formed by embossing. Typically, the compression recesses 7 are formed, for example, by embossing, which presses the absorbent 23 between an embossing roll having a projection pattern on its circumferential surface and an anvil roll having a smooth surface. When the absorbent body 23 is embossed in this manner, the absorbent core 231 and the core wrap sheet 232 covering the same are integrally compressed, so in the compressed concave portion 7 formed by the embossing, As shown in FIGS. 2 and 3, the absorbent core 231 and the core wrap sheet 232 (in the illustrated embodiment, the core wrap sheet 2321 on the side facing the skin) are integrally recessed.

  In the case where the compression recess 7 is formed in the absorber 23 (portion overlapping the compression recess 7 in a plan view of the absorber 23), for example, in the form shown in FIG. 2 and FIG. The portion of the absorber 23 up to the core wrap sheet 2322 is a high density portion 71 whose density is higher than that of the non-compressed absorber 23 in the vicinity thereof.

  Thus, by forming the compression recess 7 on the skin facing surface side of the absorber 23 by embossing, the body fluid is rapidly diffused on the surface of the absorber 23, and the absorbed body fluid is not facing the skin of the absorbent core 231. It can be quickly led to the face side. And by stiffening a part of the absorber 23 by embossing and forming the high density part 71 in the absorber 23, the rigidity of the whole absorber 23 can be enhanced, and the shape and structure of the entire absorber 23 Can be stabilized. Therefore, even if the absorber 23 is caught by the movement of the leg of the wearer, it is hard to break.

  FIGS. 2 and 3 show a structure in which the compression recess 7 is formed by embossing the absorbent body 23 (including the absorbent core 231 and the core wrap sheet 232) from the side facing the skin. . On the other hand, the compression recess 7 may be formed by embossing the absorber 23 from the non-skin facing surface side. In this case, in the thickness direction of the absorbent body 23, the portion of the absorbent body 23 from the bottom surface of the compression recess 7 to the core wrap sheet 2321 on the skin facing surface side is a portion of the absorbent body whose density is not compressed in the vicinity The high density portion 71 is higher.

  As described above, the compression recess 7 is recessed from the skin facing surface side of the absorbent 23 (absorbent core 231) to the non-skin facing surface side, or the non-skin facing surface side of the absorbent 23 (absorbent core 231). Dent on the skin facing surface side. The compression recess 7 recessed from the skin facing surface side to the non-skin facing surface side and the compression recess 7 recessed from the non-skin facing surface side to the skin facing surface side may coexist. The compression recess 7 is preferably recessed from the skin-facing surface side of the absorber 23 (absorbent core 231) to the non-skin-facing surface side as shown in FIGS. 2 and 3, whereby the compression recess 7 is a body fluid. The fluid functions as a conduction path so that the body fluid can be rapidly diffused in the surface direction of the absorber 23.

  In a plan view of the absorber 23 (the absorbent core 231) as shown in FIG. 1, the plurality of compression recesses 7 linearly extend, and any one compression recess 7 in the plurality of compression recesses 7 and the other One of the compression recesses 7 is in direct communication, or is in communication via one or more other compression recesses 7. In the present embodiment, as shown in FIG. 1, in a plan view of the absorber 23, the large number of linear compression recesses 7 cross each other and are formed in a net shape of rhombic cells. More specifically, in the skin facing surface of the absorbent core 231, the compression concave portion 7 in the form of a continuous straight line in a plan view extending in a direction intersecting with both the longitudinal direction X and the lateral direction Y without being orthogonal 1) a plurality of compression recesses 7 ′ ′ are formed, and are continuous linear compression recesses extending in the longitudinal direction X, the lateral direction Y, and the first intersecting direction without crossing at right angles with each other. 7 (hereinafter, also referred to as "the second compression recess 7") are formed in a plurality, and the first compression recess 7 and the second compression recess 7 directly communicate with each other by crossing each other, and one first compression The recess 7 and one other first compression recess 7 extending parallel thereto communicate with one another via one or more second compression recesses 7 and extend parallel to one second compression recess 7 One other second compression recess 7 communicates with one or more first compression recesses 7 There. The skin-facing surface of the absorbent core 231 is divided into a plurality of cells in a rhombic shape in a plan view, by the plurality of plane-line-shaped compressed recesses 7 intersecting each other in this manner. The shape of this cell is not limited to a rhombus, and may be a polygon, such as a triangle, a quadrangle, or a pentagon. Furthermore, on the skin-facing surface of the absorbent core 231, the compressed concave portion 7 (hereinafter, referred to as “second”) which is formed along the contour of the absorbent core 231 and has a closed shape (more specifically, an hourglass shape) in plan view. 3), and the first compression recess 7 and the second compression recess 7 are formed in the area surrounded by the third compression recess 7 and are in direct communication with the third compression recess 7. ing. Thus, the plurality of compression recesses 7 directly or indirectly communicate with each other, whereby the shape retention property of the absorber 23 (the absorbent core 231) can be further improved, and a series in which the body fluid is rapidly diffused. Passages can be formed and the diffusion rate of body fluid can be increased.

  The width Wh (line width) (see FIG. 1) of the linear compression recess 7 is smaller than the length or width W1 (see FIG. 1) of the through gap portion 6 in the lateral direction Y, and the width W1 of the through gap portion 6 is 20% to 80% of For example, when the width W1 of the through clearance 6 is 5 mm, the width Wh of the compression recess 7 may be 2 mm. The length (depth) h1 (see FIGS. 2 and 3) of the compression recess 7 in the thickness direction of the absorber 23 is at least 20% of the total thickness h2 (see FIGS. 2 and 3) of the absorber 23 80% or less is preferable, and 20% or more and 50% or less is particularly preferable. It is preferable that the width Wh and the depth h1 of the compression recess 7 be within the above-described numerical range, because both the flexibility and the shape retention of the absorber 23 can be achieved.

  In the present embodiment, as shown in FIG. 1, at least one of the plurality of compression recesses 7 intersects the through gap 6. FIG. 1 shows an example in which a plurality of linear compression recesses 7 are formed in a net shape, and a plurality of compression recesses 7 and a pair of through clearances 6, 6 intersect a plurality of times. Thus, by making the compression recess 7 and the through clearance 6 cross each other, the compression recess 7 and the through clearance 6 are connected to form a diffusion path for the body fluid, and a large amount of body fluid absorbed in the through clearance 6 Can be diffused into the compression recess 7 smoothly and promptly. For this reason, the diffusion rate of body fluid can be increased.

  The compression recess 7 may be formed on the entire skin facing surface and / or the non-skin facing surface of the absorber 23 (absorbent core 231), but only the skin facing surface and / or a part of the non-skin facing surface May be formed. The compression recess 7 is preferably formed at least in the discharge portion facing portion, more preferably formed in the discharge portion facing portion and the vicinity thereof, and further preferably formed in the crotch portion C. By so doing, the shape retention of the absorbent body 23 at the part facing the excretory part is enhanced, and a suitable wearing feeling is easily obtained, and it is also effective in suppressing liquid leakage.

  In the present embodiment, there is a region in the absorbent body 23 where the compression recess 7 is not provided. Specifically, as shown in FIG. 1, the outer edge portion of the skin facing surface of the absorber 23 (for example, a range of 25 mm from each of the front and rear edges along the horizontal direction Y, a range of 10 mm from each of the left and right edges along the vertical direction X) There is no embossing on the surface and no compression recess 7 is provided. Thereby, a suitable wearing feeling at the time of wearing can be easily obtained.

  FIG. 5 shows another embodiment of the absorbent according to the present invention. About the other embodiment mentioned below, a component different from diaper 1 mentioned above is mainly explained, the same component attaches the same numerals, and omits explanation. The description about the diaper 1 is applied suitably about the component part which is not demonstrated in particular.

  Although the width (the length in the direction orthogonal to the longitudinal direction of the linear compression recess 7) of the compression recess 7 shown in FIGS. 2 and 3 was constant in the thickness direction of the absorber 23, the compression shown in FIG. The width of the recess 7A gradually decreases inward in the thickness direction of the absorber 23 from the outer side. That is, as shown in FIG. 5, the compression recess 7A is recessed from the skin facing surface side of the absorber 23 to the non-skin facing surface side, and the width of the compression recess 7A is from the skin facing surface side to the non-skin facing surface side Is continuously smaller towards the As a result, in the high density portion 71 present at the formation position of the compressed concave portion 7A, there is a density difference in which the density increases from the edge portion of the high density portion 71 toward the center, so the liquid is a low density portion It becomes easy to flow from (the edge of the high density part 71) to the high density part (center of the high density part 71), and as a result, it is possible to improve the absorption speed of the absorber 23 for a large amount of body fluid. In addition, when the compression recess 7A is recessed from the non-skin facing surface side of the absorber 23 to the skin facing surface side, contrary to FIG. 5, the compression recess 7A is the skin facing surface side from the non-skin facing surface side. And may be continuously smaller, in which case the above effect is exhibited.

As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited at all to the said embodiment, It can change suitably in the range which does not deviate from the meaning of this invention.
For example, the absorbent article of the present invention is divided into a ventral sheet member disposed on the ventral side of the wearer and a back sheet member disposed on the dorsal side of the wearer, and the absorbent main body is It is also possible to adopt a structure in which both sheet members are bridged and fixed.
In addition, the absorbent article of the present invention is not limited to the unfolded disposable diaper, but includes other absorbent articles that absorb body fluid discharged from the human body, such as pants-type disposable diapers, sanitary napkins, sanitary shorts, etc. Be

Further, the following appendices will be disclosed regarding the embodiment of the present invention described above.
<1> A ventral side portion, a back side portion, and a front surface sheet disposed on the skin-facing surface side, a back sheet disposed on the non-skin-facing surface side, and an absorber disposed between the two sheets A longitudinal absorbent main body divided into a crotch region, and having a longitudinal direction extending from the ventral side to the back side through the crotch region and a transverse direction orthogonal to the longitudinal direction An absorbent article,
The absorbent body has a liquid-retaining absorbent core and a core wrap sheet for covering the absorbent core, and the core wrap sheet is made of a non-woven fabric, and the core wrap sheet on the skin facing surface side is non-skin facing And a core wrap sheet on the face side,
At least one through gap is formed in the absorbent core so as to be provided at least in the crotch and extend in the longitudinal direction, and the through gap penetrates the absorbent core in the thickness direction,
Furthermore, a plurality of compression recesses are formed in the absorbent core, the plurality of compression recesses extend linearly, and any one of the plurality of compression recesses and any other one are directly In communication with or through one or more additional compression recesses,
The absorptive article which has the joined part with which the core lap sheet by the side of the skin opposite side and the core lap sheet by the side of the non-skin opposite side are joined to the penetration crevice part.

The absorbent article as described in said <1> in which at least one of the <2> above-mentioned compression recessed part cross | intersects the said penetration clearance gap part.
<3> In the bonding portion, the core wrap sheet on the skin facing surface side and the core wrap sheet on the non-skin facing surface side are bonded via a hot melt adhesive, or <1> or <2> The absorbent article as described in.
<4> In the bonding portion, the core wrap sheet on the skin facing surface side and the core wrap sheet on the non-skin facing surface side are bonded via a hot melt adhesive and are melt bonded. The absorbent article as described in said <1> or <2>.
<5> The hot melt adhesive according to <3> or <4>, wherein the hot melt adhesive is applied to at least one of the core wrap sheet on the skin facing surface side and the core wrap sheet on the non-skin facing surface side. Absorbent articles.
<6> The absorbent article according to any one of <1> to <5>, wherein the bonding portion is continuously stretched in the longitudinal direction.
<7> The absorbent article according to any one of <1> to <5>, wherein the bonding portion is discontinuously stretched in the longitudinal direction.

<8> The absorbent article according to any one of <1> to <7>, wherein the bonding portion is positioned on the non-skin facing surface side in the thickness direction of the absorber.
The absorbent article as described in any one of said <1>-<8> which has <9> two said through clearance parts.
<10> In the crotch, the left and right side edges along the longitudinal direction of the absorbent core are narrowed inward in the lateral direction, and the centers extending in the longitudinal direction through the respective lateral centers of the two through clearances The absorbent article according to <9>, wherein the line divides the narrowest portion of the narrow portion of the absorbent core into three equal parts in the lateral direction.
<11> The absorbent article according to any one of <1> to <10>, wherein the compressed recess is formed by embossing.
<12> In the thickness direction of the absorber, the width of the compressed recess is continuously smaller from the skin facing surface side toward the non-skin facing surface side, or continuously from the non-skin facing surface side toward the skin facing surface side The absorbent article according to any one of <1> to <11>.
<13> The absorbent article according to any one of <1> to <12>, wherein the compressed concave portion is recessed from the skin facing surface side of the absorber to the non-skin facing surface side.
<14> The absorbent article according to any one of <1> to <13>, wherein the compressed recess is recessed from the non-skin facing surface side of the absorber to the skin facing surface side.
The absorbent article any one of said <1>-<14> in which the area | region in which the said compression recessed part is not formed in the <15> above-mentioned absorber exists.
The absorbent article as described in said <15> in which the said compression recessed part is not formed in the outer edge part of the <16> above-mentioned absorber.

  Hereinafter, the present invention will be more specifically described by way of examples, but the present invention is not limited to the examples.

Example 1
Commercially available baby disposable diapers (trade name "Mary's Extra Dry M" manufactured by Kao (Shanghai) Commodity Service Co., Ltd. to the absorbent "Corresponds with the absorbent including the absorbent core of the present invention and core wrap sheet according to the present invention ) Was removed, and the following absorbent test specimen was placed at the position where the absorbent was removed, and the rest was restored to obtain a baby-expandable disposable diaper for evaluation.

The absorbent test body for evaluation has an absorbent core and a non-woven core wrap sheet covering the absorbent core, and the basic configuration is the same as the absorbent 23 shown in FIGS. 1 to 3 . The absorbent core of the absorbent specimen has a basis weight of pulp fibers and basis weight of 200 g / m ² had the superabsorbent polymer of 286 g / m ^2. As a non-woven core wrap sheet, a 10 g / m ² SMS (spunbond-meltblown-spunbond) non-woven fabric was employed. Two penetration gaps were formed in the absorbent core. The absorbent adhesive for bonding the absorbent core and the SMS non-woven core wrap sheet is a hot melt adhesive, and the non-skin opposite surface SMS non-woven core wrap sheet and the non-skin opposite surface SMS non-woven core wrap sheet And both were applied. The hot melt adhesive on the side facing the skin was spirally applied at 2.2 g / m ² , and the hot melt adhesive on the side facing the non-skin was solid coated at 24 g / m ² . Among them, the application area ratio of the adhesive in the through clearance portion was 50%, and the area ratio of heat seal processing in the through clearance portion was 60%. A large number of compression depressions on the skin-facing surface of the absorbent body test body were formed in the form of a network of rhombic cells. The processing pressure at the time of compression processing of the absorber test body at the time of formation of the compression recess was 0.4 MPa. The processing temperature at the time of heat seal processing for joining the SMS non-woven core wrap sheet on the skin facing surface side and the SMS non-woven core wrap sheet on the non-skin facing surface side in the penetration gap portion was 170 degrees.

  In the longitudinal direction X, the total length of the absorber test sample (absorbent core) was 370 mm, the length of the region where the compression recess was present was 320 mm, and the length of the through clearance was 140 mm. In the transverse direction Y, the absorbent core of the absorber test body had a maximum width at the ventral side of 120 mm, a maximum width at the dorsal side of 100 mm, and a minimum width at the constriction of 70 mm. The width of the through clearance is 5 mm, and the distance between the center line of the left through clearance and the left edge of the narrowest portion is 23.3 mm, and the center line and the constriction of the right through clearance The distance between the right edge of the portion with the smallest width is 23.3 mm (ie, the center line extending in the longitudinal direction through the lateral center of each of the two through gaps (line indicated by reference symbol VL in the figure) In the case of the absorber test specimen, the narrowest part of the narrow part of the absorbent core of the absorbent body was divided into approximately three equal parts in the lateral direction). The area where the compression recess is present is 100 mm maximum width at the ventral side, 80 mm maximum width at the dorsal side, 48.5 mm maximum width at the crotch, and linearly extending compression The line width of each recess was 2 mm. The distance between parallel lines in the compression recesses formed by the rhombus machining was 20 mm, and the crossing angle between the lines was 30 degrees.

Comparative Example 1
As Comparative Example 1, an absorber having no penetration gap portion and no compression recess was used. The other points are the same as in the first embodiment.

Comparative Example 2
As a comparative example 2, although the compression recessed part by embossing was formed similarly to Example 1, the penetration clearance gap part was not formed but the absorber was used. The other points are the same as in the first embodiment.

Comparative Example 3
As Comparative Example 3, a through clearance is formed as in Example 1. However, in the through clearance, the SMS non-woven core wrap sheet on the skin facing surface side and the SMS non-woven core wrap sheet on the non-skin facing surface side are The absorber which was not joined and in which the compression recessed part was not formed was used. The other points are the same as in the first embodiment.

(Evaluation method and result)
About the diaper of each Example and a comparative example, absorption time and the frequency of absorber destruction operation were measured by the following method. The results are shown in Table 1 below.

<Measurement method of absorption time>
The absorption time with respect to the liquid of the diaper of Example and Comparative Examples 1-3 was measured by the pressure WB (wetback) method. The specific measurement method is as follows. The diaper for each evaluation of Example and Comparative Examples 1-3 is fixed on the acrylic board as a board | substrate. On the other hand, an acrylic plate provided with a cylindrical separatory funnel is covered from above with the diaper, and the center of the inlet of the separatory funnel is the absorbent belly at the longitudinal center line CL of the diaper (see FIG. 1). It arranges so that it may be located at a distance of 150 mm from the side end, and 120 ml of red-colored artificial urine is injected in three divided 40 ml portions every 10 minutes from the inlet of the separatory funnel. The time taken for each 40 ml of artificial urine to be infused is measured to obtain the absorption time (seconds) of the liquid. The shorter the absorption time, the faster the absorption rate and the higher the rating.

<Method of measuring the number of times of absorber destruction operation>
The diaper to be evaluated is folded in two in the longitudinal direction with the top sheet inside, and both sides of the central portion of the absorber, which is the planned portion for injecting artificial urine, are gripped with fingers and moved alternately in the vertical direction. After repeating this up and down operation 50 times, each part of the diaper is extended and spread flatly as shown in FIG. 1, and the surface sheet is directed upward and fixed on a horizontal surface, 40 g of artificial urine as described above. Inject and absorb, then allow to sit for 3 minutes in nature. The diaper is then again subjected to the up-and-down movement performed prior to the infusion of artificial urine. This up and down motion assumes movement of the baby's leg while wearing a diaper. This up and down operation is repeated until the absorber is broken, and the number of up and down operations required to break the absorber is taken as the number of times of absorber destruction operation. If even a part of the absorber collapses, it is judged that "the absorber has broken". The greater the number of times the absorber is destroyed, the better the shape retention of the absorber is, and it can be judged that the absorber is less likely to be broken during wearing, which results in high evaluation.

  The composition of the artificial urine used in the above measurement method is as follows. 1.94% by mass of urea, 0.7954% by mass of sodium chloride, 0.11058% by mass of magnesium sulfate (heptahydrate), 0.06208% by mass of calcium chloride (dihydrate), 0.19788% by mass of potassium sulfate , 0.0035% by mass of polyoxyethylene lauryl ether and ion-exchanged water (remaining amount).

As can be seen from Table 1, Comparative Example 1 in which the absorber is flat, and Comparative Example 2 in which the compressed concave portion is formed in the absorber but the through clearance portion is not formed, the absorption time of the absorber is extremely high. Long, ie the absorption rate was very slow. On the other hand, in each of Example 1 and Comparative Example 3 in which the through clearance portion was formed, the absorption speed was clearly faster in all of the three injections.
With regard to the shape retention property of the absorber, Comparative Example 3 had a very small number of absorber destructive operations due to the formation of the through clearances, that is, the absorber was very susceptible to breakage. On the other hand, in Comparative Examples 1 and 2, since the penetration clearances were not formed, the number of times of the absorber destruction operation was large. Although the penetration clearance part was formed, the frequency | count of absorber destruction operation | movement of Example 1 was significantly increased compared with the absorber of Comparative Examples 1-3. It is presumed that this is because the core wrap sheet on the skin facing surface side and the core wrap sheet on the non-skin facing surface side are bonded in the penetration gap portion to form a bonding portion. That is, Example 1 is excellent in the shape retention property of an absorber compared with the absorber of Comparative Examples 1-3, and an absorber is hard to be damaged at the time of wear.

  As can be seen from the above, the present invention including Example 1 can significantly increase the rate of absorption of the absorber to body fluid by forming both the through clearance and the compression recess in the absorber, and absorption It is possible to provide an absorbent article which can improve the shape retention of the body, is less likely to be damaged when worn, and has significantly improved resistance to breakage.

1 Disposable diapers (absorbent articles)
DESCRIPTION OF SYMBOLS 2 Absorbent main body 21 Top sheet 22 Back sheet 23 Absorbent body 3 Side panel 4 Fastening tape 5 Landing sheet 24 Sheet for forming a solid gatherer 25 Elastic member for forming a solid gatherer 26 Elastic member for forming leg gathers 231 Absorbent core 232 Core Wrap sheet 2321 Skin-facing surface side core wrap sheet 2322 Non-skin-facing surface side core wrap sheet 6 Penetration gap 61 Joints 7 and 7A Compression recess 71 High density portion A Abdominal side B Dorsal side C Crotch X Vertical Direction Y Horizontal Direction CL Centerline

Claims (10)

It has a front sheet arranged on the skin-facing side, a back sheet arranged on the non-skin-facing side, and an absorber arranged between the two sheets, and the abdominal side, the back side and the crotch An absorbent article comprising a segmented longitudinal absorbent body and having a longitudinal direction extending from the ventral side to the dorsal side via the crotch and a transverse direction orthogonal thereto. And
The absorbent body has a liquid-retaining absorbent core and a core wrap sheet for covering the absorbent core, and the core wrap sheet is made of a non-woven fabric, and the core wrap sheet on the skin facing surface side is non-skin facing And a core wrap sheet on the face side,
At least one through gap is formed in the absorbent core so as to be provided at least in the crotch and extend in the longitudinal direction, and the through gap penetrates the absorbent core in the thickness direction,
Furthermore, a plurality of compression recesses are formed in the absorbent core, the plurality of compression recesses extend linearly, and any one of the plurality of compression recesses and any other one are directly In communication with or through one or more additional compression recesses,
The absorptive article which has the joined part with which the core lap sheet by the side of the skin opposite side and the core lap sheet by the side of the non-skin opposite side are joined to the penetration crevice part.   The absorbent article according to claim 1, wherein at least one of the compression recesses intersects the through gap.   The absorbent article according to claim 1 or 2, wherein the core wrap sheet on the skin facing surface side and the core wrap sheet on the non-skin facing surface side are bonded through the hot melt adhesive at the bonding portion. .   In the bonding portion, the core wrap sheet on the skin facing surface side and the core wrap sheet on the non-skin facing surface side are bonded via a hot melt adhesive and are melt bonded. Or the absorbent article as described in 2.   The absorbent article according to any one of claims 1 to 4, wherein the joint portion is continuously stretched in the longitudinal direction.   The absorbent article according to any one of claims 1 to 4, wherein the joint portion is discontinuously stretched in the longitudinal direction.   The said junction part is an absorbent article in any one of Claims 1-6 located in the non-skin opposing surface side in the thickness direction of the said absorber.   In the thickness direction of the absorber, the width of the compressed recess is continuously reduced from the skin facing surface side toward the non-skin facing surface side, or from the non-skin facing surface side toward the skin facing surface side. The absorbent article according to any one of Items 1 to 7.   The said compression recessed part is an absorbent article in any one of Claims 1-8 which is dented in the non-skin opposing surface side from the skin opposing surface side of the said absorber.   The absorbent article in any one of Claims 1-9 in which the area | region in which the said compression recessed part is not formed in the said absorber exists.

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