JP2018068441A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article which hardly gives a discomfort to a wearer since the absorbent article is excellent in fitness to a body shape, even when the absorbent article is worn in a deviated state at some degree, which hardly generates a gap between the absorbent article and a skin of a wearer, and which exhibits a sufficient absorbent property.SOLUTION: An absorbent article 1 of the invention comprises a middle height part 42 which has thickness and basis weight larger than those of a first area 41F and a second area 41R on an intermediate area 41M of an absorbent core 41. The middle height part 42 has; a middle height center part 421 which extends over whole length of a lateral direction and extends in a vertical direction; a front side salient part 422 which becomes a salient shape toward the first area 41F side from a front end part of the middle height center part 421; and a rear side salient part 423 which becomes a salient toward the second area 41R side from a rear end part of the middle height center part 421. The middle height part 42 has a middle height groove part 47 extending in a lateral direction on at least one of the front side salient part 422 and the rear side salient part 423.SELECTED DRAWING: Figure 2

Description

  The present invention relates to absorbent articles such as sanitary napkins and incontinence pads.

  Conventionally, in an absorbent article such as a sanitary napkin, when there is a large amount of liquid to be discharged, liquid leakage may occur in daily living activities. Therefore, in the absorbent core of the absorbent article, the present applicant has a method for preventing liquid leakage by providing a middle and high portion having a large basis weight in the central portion of the excretion facing area that is disposed opposite to the liquid excretion portion of the wearer. Proposed (for example, Patent Document 1).

  For example, Patent Document 1 proposes a technique for providing a middle and high portion having a large basis weight at the central portion of the excretory facing area in the absorbent core of the absorbent article, and further providing a lateral groove and a longitudinal groove having a low basis weight at the middle and high portion. . According to the absorbent article described in Patent Literature 1, the liquid can be diffused without staying at the excretion point, thereby improving the wearing feeling and preventing liquid leakage.

JP 2012-125366 A

  In the absorbent article described in Patent Document 1, if the absorbent article cannot be worn at an appropriate position on the body when worn, there may be a shift in the wearing position in the front-rear direction or the left-right width direction of the body. In some cases, the effect of the absorbent article described in Patent Document 1 cannot be sufficiently obtained. As described above, the absorbent article described in Patent Document 1 has room for further improvement.

  Therefore, this invention is providing the absorbent article which can eliminate the fault which the prior art mentioned above has.

  The present invention is an absorbent article having a longitudinally long absorbent core corresponding to the longitudinal direction of the wearer and having a front section and a rear section, the absorbent core being located on the front section side. An intermediate region between the first region and the second region located on the rear region side, wherein the intermediate region is thicker than the first region and the second region and A middle and high portion having a basis weight higher than the basis weight in one region and the second region is provided, and the middle and high portion has a transverse direction perpendicular to the longitudinal direction of the absorbent core in plan view of the absorbent core. The middle-high central portion extending over the entire length of the absorbent core and extending to a predetermined length in the longitudinal direction along both side edges along the longitudinal direction of the absorbent core, the first from the longitudinal front end of the middle-high central portion One front-side convex portion that protrudes toward the region side, and the longitudinal rear end of the middle-high central portion And has a single rear-side convex portion that protrudes toward the second region, and the middle-high portion has the front-side convex portion and the rear-side convex portion in plan view of the absorbent core. The absorbent article which has the middle-high horizontal groove part extended in a horizontal direction in at least one of these is provided.

  According to the present invention, even if the absorbent article is worn in a slightly shifted state, it is difficult to give the wearer a sense of incongruity due to excellent fit to the body shape, and it is difficult to create a gap between the skin of the wearer. Sufficient absorption performance can be expressed.

FIG. 1 is a plan view showing a skin facing surface side (skin side sheet side) of a sanitary napkin which is a preferred embodiment of the absorbent article of the present invention. FIG. 2 is a plan view of the skin facing surface side of the absorbent core of the sanitary napkin shown in FIG. 3 is a cross-sectional view schematically showing a cross section taken along line III-III in FIG. 4 is a cross-sectional view schematically showing a cross section taken along line IV-IV in FIG. FIG. 5A to FIG. 5B are explanatory views for explaining a manufacturing process of the absorbent core included in the sanitary napkin shown in FIG. 6 is a perspective view of an absorbent core included in the sanitary napkin of Comparative Example 1. FIG.

  Hereinafter, an absorbent article of the present invention will be described with reference to the drawings based on a sanitary napkin 1 (hereinafter also referred to as “napkin 1”) which is a preferred embodiment thereof. The top view which looked at the napkin 1 of this embodiment from the skin side sheet | seat side is shown by FIG. As shown in FIG. 1, the napkin 1 of the present embodiment includes an absorbent core 41 having a long shape in the longitudinal direction X corresponding to the wearer's front-rear direction, and has a front section A and a rear section C. As shown in FIG. 1, the napkin 1 includes an excretion facing area B disposed opposite to the wearer's liquid excretion part, and a front area A and a rear area C disposed in the longitudinal direction X of the excretion facing area B. It is divided into and.

  In this specification, the vertical direction X corresponds to the longitudinal direction of the wearer, matches the longitudinal direction of the absorbent article (napkin 1), and the lateral direction Y indicates the width direction of the absorbent article (napkin 1). (Direction perpendicular to the longitudinal direction). Therefore, unless otherwise specified, in this specification, the length in the longitudinal direction (vertical direction X) means the “length” that is a distance measured in the vertical direction X, and the length in the lateral direction Y The length means “width” which is a distance measured in the lateral direction Y. The napkin 1 is formed symmetrically with respect to a center line CL extending in the vertical direction X. The vertical direction X is also a direction parallel to the center line CL. Moreover, in this specification, a skin opposing surface is a surface turned to a wearer's skin side at the time of wear of the absorptive article (napkin 1) in the absorptive article (napkin 1) or its constituent member, for example, absorber 4. The non-skin facing surface is directed to the side opposite to the skin side (clothing side) when the absorbent article (napkin 1) is worn in the absorbent article (napkin 1) or its constituent member, for example, the absorbent body 4 It is the surface to be.

  The napkin 1 includes an excretion facing area B that is disposed opposite to a wearer's liquid excretion part (such as the vaginal opening) when worn, and a front area that is disposed closer to the wearer's ventral side (front side) than the excretion facing area B A and a rear area C arranged closer to the wearer's back side (rear side) than the excretion facing area B. That is, the napkin 1 is divided in the longitudinal direction X in the order of the front area A, the excretion facing area B, and the rear area C.

  In the absorbent article of the present invention, the excretion facing area B is a region having one wing portion 1W in the longitudinal direction X (one wing portion) when having the wing portion 1W like the napkin 1 of the present embodiment. 1W) is a region sandwiched between a root along the vertical direction X of 1W and a root along the vertical direction X of the other wing portion 1W. Moreover, in the case of the absorbent article which does not have a wing part, when the absorbent article is folded into the three-fold individual form, two folding lines (crossing the absorbent article in the lateral direction Y ( (Not shown) means a region surrounded by a first folding line and a second folding line as counted from the front end in the longitudinal direction X of the absorbent article.

  As shown in FIG. 1, the napkin 1 of the present embodiment includes a liquid-permeable skin-side sheet 2 that forms a skin-facing surface, a non-skin-side sheet 3 that forms a non-skin-facing surface, and both of these sheets 2, 3. It has an absorber 4 interposed therebetween. The absorber 4 includes an absorbent core 41 and a core wrap sheet (not shown) that wraps the absorbent core 41.

  In the napkin 1, the skin-side sheet 2 covers the entire area of the skin-facing surface of the absorbent body 4 and extends outward in the lateral direction Y from both side edges along the longitudinal direction X of the absorbent body 4 as shown in FIG. 1. I'm out. On the other hand, the non-skin side sheet 3 covers the entire area of the non-skin facing surface of the absorbent body 4, and further extends outward in the lateral direction Y from both side edges along the vertical direction X of the skin side sheet 2, and will be described later. A side flap portion 1 </ b> S is formed together with the side seat 5. The non-skin side sheet 3 and the side sheet 5 are joined to each other by known joining means such as an adhesive, a heat seal, and an ultrasonic seal at the extended portions from both side edges along the longitudinal direction X of the absorber 4. Yes. In addition, between the skin side sheet | seat 2 and the non-skin side sheet | seat 3, and the absorber 4 may be joined by the adhesive agent.

  In the napkin 1, the side sheet | seat 5 is distribute | arranged to the both sides along the vertical direction X in the skin opposing surface of the skin side sheet | seat 2, as shown in FIG. Preferably, the side sheet 5 is arranged over the entire length in the longitudinal direction X of the skin side sheet 2 so as to overlap both left and right side portions along the longitudinal direction X of the skin side sheet 2 in plan view.

  In the napkin 1, the pair of side sheets 5 and 5 are joined to the skin-side sheet 2 at the joining portion 6 as shown in FIG. A pair of corrugated joints 6 in which irregularities in the lateral direction Y due to a curve are alternately and continuously arranged in the longitudinal direction X are arranged symmetrically in the lateral direction Y about the center line CL in plan view. In this way, when the side sheet 5 is bonded and fixed to the skin-side sheet 2 at the wavy bonding portion 6, it is inward in the lateral direction Y from the bonding portion group of the wavy bonding portions 6. A space defined by the side sheet 5 and the skin side sheet 2 is formed. Since this space portion is open toward the center line CL, body fluid such as menstrual blood flowing outward from the center in the lateral direction Y is accommodated in the space portion, and as a result, body fluid leaks. It can be effectively prevented.

  In the napkin 1, as shown in FIG. 1, the side flap portion 1S projects greatly outward in the lateral direction Y in the excretion facing area B, whereby the napkin 1 has both left and right sides along the vertical direction X. In addition, a pair of wing portions 1W and 1W are provided. The wing portion 1W is used by being folded back to the non-skin facing surface side of the crotch portion of clothes such as shorts. Moreover, as shown in FIG. 1, the skin side sheet | seat 2 and the non-skin side sheet | seat 3 are extended to the outward of the vertical direction X from the front end and the rear end of the vertical direction X of the absorber 4, respectively, and those extension parts Are joined to each other by a known joining means such as an adhesive, heat sealing, ultrasonic sealing or the like to form an end seal portion.

  In the napkin 1, as shown in FIG. 1, the skin side sheet | seat 2 and the absorptive core 41 are provided with the linear pressing groove 7 by which pressing integration was carried out. Preferably, in the napkin 1, a linear compressed groove 7 is formed on the skin-facing surface of the skin-side sheet 2 so that the skin-side sheet 2 and the absorbent body 4 are integrally recessed toward the non-skin-side sheet 3 side. ing. “Linear” in the linear compressed groove 7 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. In addition, as long as the linear pressing groove 7 is extended linearly, the thickness of the bottom part of a groove | channel may be constant, and the thickness of the bottom part of a groove | channel may not be constant. Examples of the compressed groove in which the thickness of the bottom of the groove is not constant include, for example, a relatively deeply recessed portion (high pressure portion) and a relatively shallowly recessed portion (low pressure portion) at the bottom of the compressed groove. The form currently formed is mentioned. In the linear compressed groove 7, with respect to the skin-side sheet 2 and the absorbent body 4, the density of each fiber that is a constituent member is higher than the density of the peripheral portion of the linear compressed groove 7.

  In the napkin 1, as shown in FIG. 1, the linear pressing groove 7 includes a pair of vertical pressing grooves 73, 73 extending in the vertical direction X of the absorbent core 41 and a lateral direction Y of the pair of vertical pressing grooves 73, 73. A pair of second vertical pressing grooves 73A and 73A are provided on the outer side of the first side. Preferably, in the napkin 1, the linear compressed grooves 7 are formed in the front area A and the rear area C of the absorbent body 4, respectively in the first lateral compressed groove 71 extending in the lateral direction Y, and in the excretion facing area B of the absorbent body 4. Both sides along the vertical direction X have vertical compression grooves 73 extending in the vertical direction X. In the napkin 1, the first lateral pressing groove 71 has a curved shape that protrudes outward in the longitudinal direction X, and the vertical pressing groove 73 has a curved shape that protrudes outward in the lateral direction Y in the excretion facing area B. It is. The first lateral pressing groove 71 extends in the lateral direction Y across the pair of vertical pressing grooves 73 on the inner side of the pair of vertical pressing grooves 73. In the napkin 1, the first horizontal pressing groove 71 in the front section A, one vertical pressing groove 73, the first horizontal pressing groove 71 in the rear section C, and the other vertical pressing groove 73 are connected to form a ring-shaped circumferential groove. Forming. The linear squeezing groove 7 formed in this way can suppress the diffusion of the body fluid in the planar direction of the absorbent body 4, and can effectively prevent liquid leakage from the periphery of the napkin 1. The pair of second vertical pressing grooves 73A and 73A are a first lateral pressing groove 71 in the front section A that forms a ring-shaped circumferential groove, one vertical pressing groove 73, a first horizontal pressing groove 71 in the rear section C, And the other vertical pressing groove 73 is arranged independently. Similarly to the vertical pressing groove 73, the second vertical pressing groove 73A has a curved shape that protrudes outward in the lateral direction Y in the excretion facing area B.

  In the napkin 1, the absorbent core 41 constituting the absorbent body 4 includes a first region 41F located on the front section A side in the longitudinal direction X and a second region 41R located on the rear section C side, as shown in FIG. And has an intermediate region 41M between the first region 41F and the second region 41R. The intermediate region 41M includes a middle-high portion 42. In the napkin 1, the intermediate area 41 </ b> M of the absorbent core 41 is disposed in the excretion facing area B. Preferably, in the napkin 1, the intermediate region 41M of the absorbent core 41 and the excretion facing area B coincide with each other in the vertical direction. Therefore, the napkin 1 has the middle-high portion 42 in the excretion facing area B. In the napkin 1, as shown in FIG. 2, the size of the front area A of the napkin 1 and the size of the first area 41F of the absorbent core 41 are substantially equal to each other in plan view. The size of C and the size of the second region 41R of the absorbent core 41 are substantially the same.

  When the napkin 1 is provided with a pair of wing portions 1W on both outer sides in the lateral direction Y, there is an intermediate region 41M between the roots of the wing portions 1W arranged at intervals in the vertical direction X in each wing portion 1W. doing. More specifically, the intermediate region 41M of the napkin 1 exists between the roots of the wing portions 1W arranged at intervals in the vertical direction X of each wing portion 1W. The size of the front area A of the napkin 1 and the size of the first area 41F of the absorbent core 41 substantially coincide with each other, and the size of the rear area C of the napkin 1 and the size of the second area 41R of the absorbent core 41 are the same. Are substantially equal to each other, the length in the vertical direction X of the intermediate region 41M of the napkin 1 is between the roots of the wing parts 1W arranged at intervals in the vertical direction X in each wing part 1W. It is the same as the length.

  Further, the intermediate region 41M includes a first region 41F located in front of the intermediate region 41M and a second region 41R located in the rear of the intermediate region 41M, except for a middle / high boundary groove portion 43 and a middle / high lateral groove portion 47 described later. The thickness is greater than the thickness of the absorbent core 41 in the region. In the napkin 1, the absorbent core 41 has a shape that is long in the same direction as the longitudinal direction X of the napkin 1. Therefore, the longitudinal direction of the absorbent core 41 is the same as the longitudinal direction X of the napkin 1, and the lateral direction of the absorbent core 41 is the same direction as the lateral direction Y of the napkin 1.

  As shown in FIG. 3, the middle-high portion 42 included in the intermediate region 41 </ b> M is formed to be thicker than the thickness of the first region 41 </ b> F and the thickness of the second region 41 </ b> R in the absorbent core 41, and The basis weight is formed higher than the basis weight of the first region 41 </ b> F and the basis weight of the second region 41 </ b> R in the absorbent core 41. Here, the thickness and basis weight of the middle-high portion 42 mean the thickness and basis weight of the middle-high portion 42 where the later-described middle-high boundary groove portion 43 and the later-described middle-high lateral groove portion 47 do not exist. Moreover, the groove part 45 mentioned later is formed in the 1st area | region 41F and the 2nd area | region 41R about each thickness and basic weight of the 1st area | region 41F and 2nd area | region 41R compared with the thickness and basic weight of the middle-high part 42. In the case, it means the thickness and basis weight of the first region 41F and the second region 41R where there is no groove 45. The absorbent core 41 of the napkin 1 has a thickness difference by providing a difference in the basis weight of the core material. Therefore, unlike the case of providing a thickness difference by compressing a part of the absorbent core having a uniform basis weight. The absorbent core 41 is flexible as a whole.

The thickness of the middle-high portion 42 is such that the middle-high portion 42 protrudes toward the skin and improves the absorbability of the liquid of the absorbent core 41 and the like in the first region 41F and the second region 41R in the absorbent core 41. The thickness is preferably 120% (that is, 1.2 times) or more, more preferably 140% or more, preferably 700% or less, more preferably 500% or less, and when worn. From the viewpoint of suppressing followability to the body and uncomfortable feeling, it is preferably 120% to 700%, more preferably 140% to 500%. Further, the difference in thickness between the thickness of the middle-high portion 42 and the thickness of the first region 41F or the second region 41R (the former-the latter) is preferably 1.0 mm or more, more preferably 2.0 mm or more, Preferably it is 8.0 mm or less, More preferably, it is 6.0 mm or less, Preferably it is 1.0 mm or more and 8.0 mm or less, More preferably, it is 2.0 mm or more and 6.0 mm or less. The above-described configuration is particularly effective when the middle / high portion 42 is provided in the excretion facing area B like the napkin 1 of the present embodiment.
Specifically, the thickness of the middle-high portion 42 is preferably 2.0 mm or more, more preferably 3.0 mm or more, preferably 10.0 mm or less, more preferably 7.0 mm or less, and preferably Is 2.0 mm or more and 10.0 mm or less, more preferably 3.0 mm or more and 7.0 mm or less. In addition, it is preferable that the relationship of the thickness is in the entire range of the middle-high portion 42. However, in the case where the increase / decrease is provided in the thickness direction of the middle-high portion 42, the relationship is the above in the thickest portion. It only has to be.
In addition, it is preferable that the relationship of the above thickness is in the entire range of the middle-high portion 42, but in the thickness direction of the middle-high portion 42, a gradual increase / decrease in thickness is provided in the lateral direction Y or the longitudinal direction X or in both directions. In such a case, it is only necessary to satisfy the above-mentioned relationship in the thickest part.
Specifically, the thickness of the first region 41F or the second region 41R is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 7.0 mm or less, more preferably 3.5 mm or less. Moreover, it is preferably 0.5 mm or more and 7.0 mm or less, more preferably 1.0 mm or more and 3.5 mm or less.
In the napkin 1, it is preferable that the thickness of the first region 41F or the second region 41R is substantially uniform in a portion where a groove 45 described later does not exist, but the side of the first region 41F or the second region 41R. In the case where a gradual increase / decrease in thickness is provided in the direction Y or the vertical direction X, it is only necessary that the above relationship is satisfied in the thickest portion.
The thickness of each part of the absorptive core 41 such as the middle-high portion 42, the first region 41F or the second region 41R, and the later-described middle-high adjacent portion 44 is measured by the following method.

<Method for measuring thickness of each part of absorbent core 41>
The absorbent core is left in a horizontal place so as not to be wrinkled or bent, and the middle / high portion 42, the first region 41F, the second region 41R, or the like, which is a measurement object, is cut out from the absorbent core 41. And the thickness under the load of 5 cN / cm < ² > in the cut-out measuring object is measured. Specifically, for example, a thickness gauge PEACOCK DIAL UPRIGHT GAUGES R5-C (manufactured by OZAKI MFG.CO.LTD.) Is used for measuring the thickness. At this time, a planar or square plate (acrylic having a thickness of about 5 mm) having a size adjusted so that the load is 5 cN / cm ² between the tip of the thickness meter and the cut object to be measured. Plate) and measure the thickness. When measuring the thickness of the first region 41 </ b> F or the second region 41 </ b> R in the absorbent core 41, the thickness is measured so as not to include a groove 45 described later.

In the napkin 1, the basis weight of the middle high portion 42 in the absorbent core 41 is preferably from the viewpoint of causing the middle high portion 42 to protrude toward the skin and improving the absorbability of the liquid in the absorbent core in the excretion facing area B. 100 g / m ² or more, more preferably 200 g / m ² or more, and preferably 1500 g / m ² or less, more preferably 1200 g / m ² or less, specifically preferably 100 g / m ² or more. It is 1500 g / m ² or less, more preferably 200 g / m ² or more and 1200 g / m ² or less. The basis weight of the first region 41F or the second region 41R in the absorbent core 41 is preferably 50 g / m ² or more, more preferably 100 g / m ² or more, and preferably 1000 g / m. ² or less, more preferably 900 g / m ² or less, specifically preferably 50 g / m ² or more and 1000 g / m ² or less, more preferably 100 g / m ² or more and 900 g / m ² or less. The basis weight of the first region 41F or the basis weight of the second region 41R is the mass of the sample of the first region 41F or the second region 41R cut out as described in the method for measuring the thickness of each part of the absorbent core 41 described above. Is divided by the area of the surface of the sample facing the skin. When measuring the basic weight of the middle-high part 42 in the absorbent core 41, it measures so that the middle-high boundary groove part 43 mentioned later and the middle-high horizontal groove part 47 mentioned later may not be included. Moreover, when measuring the basic weight of the 1st area | region 41F in the absorptive core 41, or the basic weight of the 2nd area | region 41R, it measures so that the groove part 45 mentioned later may not be included.

  As shown in FIG. 2, the middle-high portion 42 extends over the entire length in the lateral direction Y orthogonal to the longitudinal direction X of the absorbent core 41 in a plan view of the absorbent core 41 and extends in the longitudinal direction of the absorbent core 41. A middle-high central portion 421 extending to a predetermined length in the vertical direction X according to both side edges 41s, 41s along the direction X, and a convex one from the front end portion in the vertical direction X of the middle-high central portion 421 toward the first region 41F side. Each front-side convex portion 422 and one rear-side convex portion 423 that is convex toward the second region 41R side from the rear end portion in the longitudinal direction X of the middle-high center portion 421 are provided. That is, in the napkin 1, the middle / high portion 42 is divided into a front convex portion 422, a middle / high central portion 421, and a rear convex portion 423.

  As shown in FIG. 2, the middle-high center portion 421 extends in a band shape between both side edges 41 s, 41 s along the longitudinal direction X of the absorbent core 41, and extends laterally from the middle-high center portion 421. The length in the direction Y is the same as the width of the absorbent core 41. Here, the width of the absorbent core 41 means the width of the absorbent core 41 including the middle and high portions 42. The absorbent core 41 preferably has as large an area as possible in the middle and high central portion 421 so that sufficient absorbent performance can be exhibited even when the absorbent article is worn with some deviation. Preferably, the absorbent core 41 has a constant interval in the longitudinal direction X between both side edges 41s, 41s along the longitudinal direction X, and both side edges 41s, 41s are parallel to the longitudinal direction X, and More preferably, it is linear. Furthermore, even when the mounting position of the napkin 1 is deviated, from the viewpoint of exhibiting sufficient absorption performance and further improving fit, the absorbent core 41 has a maximum length in the lateral direction Y, which is a middle-high central portion 421. More preferably, it is the same as the maximum length in the lateral direction Y. However, at the time of manufacture, the middle-high portion 42 is caused by a positional deviation in the lateral direction Y of the middle-high portion 42 in the absorbent core 41, chipping of the middle-high portion 42, die-cutting inclination due to the production method, rounding of the end portion, chamfering, and the like. If the width of the core and the width of the absorbent core 41 are slightly different, for example, if the maximum width of the middle-high portion 42 and the maximum width of the absorbent core 41 are in the range of a difference of about 5% of width, the same width is used. . The maximum width means the distance at the longest position in the lateral direction Y. In the napkin 1, as shown in FIG. 2, the maximum width in the lateral direction Y (maximum length in the lateral direction Y) of the middle-high portion 42 is the maximum width (lateral direction Y in the intermediate region 41M of the absorbent core 41). And the same as the maximum width of the absorbent core 41 (maximum length in the lateral direction Y).

  In the napkin 1, the middle-high center portion 421 has a height that decreases from the center portion in the lateral direction Y toward both side edges along the longitudinal direction X as shown in FIG. It is formed as follows. That is, the center portion arranged on the center line CL extending in the vertical direction X in the middle-high center portion 421 is formed with the highest height. Thus, when the middle-high center part 421 is formed, the absorptivity etc. of the liquid in the excretion opposite area B can be improved.

  As shown in FIG. 4, the middle-high center portion 421 of the middle-high portion 42 has a smaller basis weight from the center portion in the lateral direction Y toward the side edge portions along the longitudinal direction X as viewed in cross section. It is formed as follows. That is, the center portion arranged on the center line CL extending in the vertical direction X in the middle-high center portion 421 is formed with the largest basis weight. Thus, when the middle-high center part 421 is formed, the absorptivity etc. of the liquid in the excretion opposite area B can be improved.

The middle-high center portion 421 of the napkin 1 is the height at the side edge 41s having the smallest height of the height (T1) of the center portion arranged on the center line CL in a cross-sectional view as shown in FIG. The ratio (T1 / T2) to (T2) is preferably 1.1 or more, particularly 1.3 or more from the viewpoint of allowing the middle and high parts to adhere to the excretion part without gaps as much as possible. Is preferably 4 or less, particularly 3 or less, specifically 1.1 or more and 4 or less, particularly preferably 1.3 or more and 3 or less.
Moreover, from the viewpoint of preventing unexpected wrinkles and breakage of the napkin 1, the middle and high-center part 421 of the napkin 1 has a basis weight of the first region 41 </ b> F and the second region 41 </ b> R in the absorbent core 41 at least on the skin contact surface side. The basis weight is lower than that of the recess. Here, the basis weight of the first region 41F and the second region 41R means the basis weight of the portion excluding the groove portion 45 when the first region 41F and the second region 41R have the groove portion 45.

  Further, as shown in FIG. 2, one front-side convex portion 422 of the middle-high portion 42 is disposed at the front end portion of the middle-high center portion 421. In the napkin 1, the front side convex portion 422 is arranged on the center line CL in which the top portion 422t of the front side convex portion 422 extends in the vertical direction X, and both sides 422s and 422s forming the front side convex portion 422 are provided. Each extends linearly from the top 422t to the side edge 41s along the longitudinal direction X of the absorbent core 41.

  Further, as shown in FIG. 2, one rear-side convex portion 423 of the middle-high portion 42 is disposed at the rear end portion of the middle-high center portion 421. Similarly to the front side convex part 422, the rear side convex part 423 is arranged on the center line CL in which the top part 423 t of the rear side convex part 423 extends in the vertical direction X, and both sides forming the rear side convex part 423. 423 s and 423 s extend in a straight line shape from the top portion 423 t to the side edge 41 s along the longitudinal direction X of the absorbent core 41.

  In the napkin 1, as shown in FIG. 2, when the absorbent core 41 is viewed in plan, the front-side convex portion 422 gradually decreases in length in the lateral direction Y from the middle-high central portion 421 toward the first region 41 </ b> F side. In addition, the length of the rear side convex portion 423 in the lateral direction Y gradually becomes narrower from the middle-high central portion 421 toward the second region 41R side. That is, the front-side convex portion 422 and the rear-side convex portion 423 in the absorbent core 41 have their widths d from the both side portions along the vertical direction X toward the top portions 422t and 423t located at the central portion in the horizontal direction Y, respectively. Is formed so as to gradually decrease. Preferably, in the front convex part 422 in the absorbent core 41 of the napkin 1, the distance (width d) between the side edges 422s and 422s is from the side edges 41s and 41s along the longitudinal direction X of the absorbent core 41 to the top part 422t. It is gradually decreasing. Similarly, in the rear side convex portion 423 of the absorbent core 41 of the napkin 1, the distance (width d) between the side sides 423s and 423s is from the side edges 41s and 41s along the longitudinal direction X of the absorbent core 41 to the top portion 423t. It is gradually decreasing. Here, the width d gradually decreasing means that the width d continuously decreases gradually toward the top portions 422t and 423t.

  The absorbent core 41 in the napkin 1 will be described by taking the front convex portion 422 of the front convex portion 422 and the rear convex portion 423 as an example. Both side sides 422s and 422s extend straight without bending. ing. The angle α formed by the one side 422s and the center line CL extending in the vertical direction X is preferably 20 ° or more, more preferably 30 from the viewpoint of improving fit to the body shape and followability in movement. And more preferably 75 ° or less, more preferably 60 ° or less, and specifically preferably 20 ° or more and 75 ° or less, and more preferably 30 ° or more and 60 ° or less. The rear side convex portion 423 is the same as the front side convex portion 422.

The total length L2 of the middle and high portions 42 in the longitudinal direction X is preferably 25% or more, more preferably 30% or more, and preferably 90% or less, more preferably, of the total length L1 of the absorbent core 41 in the longitudinal direction X. Is 75% or less, preferably 25% or more and 90% or less, more preferably 30% or more and 75% or less.
In addition, the full length L1 shows the distance in the longest position in the vertical direction X of the absorptive core 41, and the full length L2 means the distance in the longest position in the vertical direction X of the middle-high part 42.

  The total length L3 in the longitudinal direction X of the middle-high center portion 421 constituting the middle-high portion 42 is preferably 20% or more, more preferably 30% or more, and preferably 90% or less, more preferably the total length L2 of the middle-high portion 42. Preferably, it is 80% or less, preferably 20% or more and 90% or less, more preferably 30% or more and 80% or less.

The total length L4 in the longitudinal direction X of the front convex portion 422 constituting the middle-high portion 42 is preferably 5% or more, more preferably 10% or more, and preferably 50% or less of the total length L2 of the middle-high portion 42. More preferably, it is 30% or less, preferably 5% or more and 50% or less, more preferably 10% or more and 30% or less. The total length X in the vertical direction X of the rear-side convex portion 423 constituting the middle-high portion 42 is the same as the total length L4 in the vertical direction X of the front-side convex portion 422.
The total length L4 means the distance at the longest position in the longitudinal direction X of the front convex portion 422.

In the napkin 1, as shown in FIG. 2, the absorbent core 41 is viewed in plan, and from the viewpoint of securing the absorption surface of the excretion facing area B that is disposed opposite to the wearer's liquid excretion part (such as the vaginal opening) when worn. In addition, the surface area S1 of the middle-high central portion 421 is preferably formed larger than the surface area S2 of the front convex portion 422 and the surface area S3 of the rear convex portion 423, respectively. Here, the surface area of each part means the area of the surface facing the skin. The surface area S1 of the middle-high central part 421 is preferably 100% of the surface area S2 of the front convex part 422 or the surface area S3 of the rear convex part 423 from the viewpoint of securing the absorption surface of the excretion facing area B of the absorbent core 41. (That is, 1 time) or more, more preferably 160% or more, preferably 3600% or less, more preferably 2000% or less, specifically preferably 100% or more and 3600% or less, More preferably, it is 160% or more and 2000% or less.
Suitably, the surface area S1 of the middle-high central portion 421 is preferably 20 cm ² or more, more preferably 30 cm ² or more, and preferably 200 cm ² or less, more preferably 150 cm ² or less. 20 cm ² or more 200 cm ² or less, more preferably 30 cm ² or more 150 cm ² or less.
The surface area S2 of the front convex part 422 or the surface area S3 of the rear convex part 423 is preferably 5 cm ² or more, more preferably 10 m ² or more, and preferably 40 cm ² or less, more preferably 30 cm ² or less. Specifically, it is preferably 5 cm ² or more and 50 cm ² or less, more preferably 10 cm ² or more and 40 cm ² or less.

  In the napkin 1, as shown in FIG. 2, the absorptive core 41 has the middle-high boundary groove part 43 which divides the boundary between the middle-high part 42 and a part other than the middle-high part 42 in the intermediate region 41M. In the napkin 1, the middle / high boundary groove portion 43 forms a front middle / high boundary groove portion 43 a extending along both side sides 422 s and 422 s forming the front convex portion 422 constituting the middle high portion 42 and a rear convex portion 423. It has a rear middle / high boundary groove 43c extending along both sides 423s and 423s. In the napkin 1, the front middle / high boundary groove 43 a and the rear middle / high boundary groove 43 c are arranged over the entire length (full width) of the absorbent core 41 in the lateral direction Y. For this reason, it is hard to produce a vertical wrinkle in the vertical direction of the napkin 1 with respect to the force acting on the inner side in the width direction of the absorbent core 41 from the legs, and the napkin 1 is easy to fit three-dimensionally along the shape of the body. Become. Thus, in the absorptive core 41, the boundary with the middle-high part 42 is divided by the front middle-high boundary groove part 43a and the back middle-high boundary groove part 43c.

In the napkin 1, the groove width of the middle / high boundary groove portion 43 in the absorbent core 41 is preferably 0.1 mm or more, more preferably 0.5 mm or more, from the viewpoint of improving the liquid absorbency and the like in the excretion facing area B. Preferably, it is 5.0 mm or less, more preferably 3.0 mm or less, preferably 0.1 mm or more and 5.0 mm or less, more preferably 0.5 mm or more and 3.0 mm or less. is there. In addition, the groove width of the middle / high boundary groove portion 43 and the thickness described later are measured in a direction perpendicular to the extending direction of the middle / high boundary groove portion 43 and measured from a photograph of the cut end surface.
In the napkin 1, the thickness of the middle / high boundary groove 43 in the absorbent core 41 is preferably 0.08 mm or more, more preferably 0.15 mm or more, from the viewpoint of improving the liquid absorbency and the like in the excretion facing area B. Also, it is preferably 7.0 mm or less, more preferably 3.5 mm or less, and preferably 0.08 mm or more and 7.0 mm or less, more preferably 0.15 mm or more and 3.5 mm or less. is there

In the napkin 1, the middle / high boundary groove portion 43 is formed to have a basis weight lower than the basis weight of the middle / high portion 42 and further lower than the basis weight of the first region 41F and the second region 41R in the absorbent core 41. ing. Here, the basis weight of the first region 41 </ b> F and the basis weight of the second region 41 </ b> R mean the basis weight of the portion excluding the groove portion 45 when having the groove portion 45. The basis weight of the middle / high boundary groove 43 is preferably 10 g / m ² or more, more preferably 20 g / m ² or more, and preferably 350 g / m ² or less, more preferably 250 g / m ² or less. Specifically, it is preferably 10 g / m ² or more and 350 g / m ² or less, more preferably 20 g / m ² or more and 250 g / m ² or less. In addition, the basic weight of the middle-high boundary groove part 43 is the skin facing surface side of the sample of the part of the middle-high boundary groove part 43 cut out as described in the method for measuring the thickness of each part of the absorbent core 41 described above. Divide by the area of the surface.

  As shown in FIG. 2, the middle-high portion 42 has a middle-high lateral groove portion 47 extending in the lateral direction Y on at least one of the front-side convex portion 422 and the rear-side convex portion 423 in plan view of the absorbent core 41. In other words, the napkin 1 has the front middle and high horizontal groove portion 47a on the front convex portion 422 and the rear middle and high horizontal groove portion 47c on the rear convex portion 423. Here, as long as the middle / high horizontal groove portion 47 extends in the lateral direction Y, it may extend in a continuous straight line, may extend in a discontinuous line arranged intermittently, or may extend in a curved line. Also good. The front middle and high horizontal groove portions 47a and the rear middle and high horizontal groove portions 47c, which are the middle and high horizontal groove portions 47 of the napkin 1, both extend in a continuous linear shape. Further, the fact that the middle and high lateral groove portions 47 extend in the lateral direction Y means that the angle formed by the bisector of the absorbent core 41 extending in the lateral direction Y extends within a range of less than 45 degrees. In the napkin 1, both the front middle and high horizontal groove portion 47a and the rear middle and high horizontal groove portion 47c extend in parallel to the bisector.

  In the napkin 1, it is preferable that one end of the middle / high lateral groove portion 47 is in contact with the middle / high boundary groove portion 43, but both ends of the middle / high lateral groove portion 47 are in contact with different portions in the middle / high boundary groove portion 43 as shown in FIG. Yes. Preferably, the front middle / high horizontal groove 47a extends over both sides 422s and 422s of the front convex part 422, and both ends of the front middle / high horizontal groove 47a extend along the both sides 422s and 422s. It contacts at a part different from 43a. Similarly, the rear middle / high horizontal groove 47c extends over both sides 423s and 423s of the rear-side convex part 423, and both ends of the rear middle / high horizontal groove 47c extend along the both sides 423s and 423s. And touches at different parts.

  It is sufficient that at least one middle / high horizontal groove portion 47 is disposed on one of the front-side convex portion 422 and the rear-side convex portion 423, but preferably one or more and ten or less are preferably disposed. More preferably, it is arranged below this. In the napkin 1, two front middle and high horizontal groove portions 47 a are arranged on the front convex portion 422, and each front middle and high horizontal groove portion 47 a extends in the lateral direction Y across both sides 422 s and 422 s of the front convex portion 422. The absorbent core 41 that extends extends parallel to the bisector. Further, two rear middle / high horizontal groove portions 47c are arranged on the rear side convex portion 423, and each rear middle / high horizontal groove portion 47c extends along the bisector across both sides 423s and 423s of the rear side convex portion 423. It extends in parallel.

  In the napkin 1, the front middle high horizontal groove part 47a is arranged on the front convex part 422, the rear middle high horizontal groove part 47c is arranged on the rear side convex part 423, the front middle high horizontal groove part 47a, the rear middle high horizontal groove part 47c, In between, the 1st horizontal pressing groove 71 of the front area A which forms a ring-shaped perimeter groove, one vertical pressing groove 73, the 1st horizontal pressing groove 71 of the back area C, and the other vertical pressing groove 73, Are provided with a pair of independent second vertical pressing grooves 73A, 73A. In addition, as in the case of the napkin 1, when the front middle and high horizontal groove portions 47a are arranged on the front side convex portion 422 and the plurality of rear middle and high horizontal groove portions 47c are arranged on the rear side convex portion 423, the napkin 1 It is preferable that a pair of second vertical pressing grooves 73A and 73A are disposed between the front middle / high horizontal groove portion 47a and the rear middle / high horizontal groove portion 47c that are closest to a center line (not shown) extending in the lateral direction Y. . If a pair of 2nd vertical pressing grooves 73A and 73A are arranged in such a position, it is hard to be influenced by the front middle and high horizontal groove part 47a and the rear middle and high horizontal groove part 47c in the middle and high part 42, and in the plane direction of absorber 4. The body fluid can be prevented from diffusing and liquid leakage from the napkin 1 can be effectively prevented.

  The napkin 1 includes a pair of wing portions 1W and 1W on both outer sides in the lateral direction Y. In the napkin 1, the position of the front imaginary line ILa that connects the roots located on the front area A side in the pair of wing portions 1W, 1W and the position of the front middle and high lateral groove portion 47a of the front convex portion 422 coincide. The position of the rear imaginary line ILc that connects the roots located on the rear section C side in the pair of wing portions 1W, 1W and the position of the rear middle-high horizontal groove portion 47c of the rear-side convex portion 423 coincide with each other. When a plurality of front middle and high horizontal groove portions 47a are arranged on the front convex portion 422 like the napkin 1, the position of one of the front middle and high horizontal groove portions 47a is the position of the front virtual line ILa. It only needs to match the position. Similarly, when a plurality of the rear middle and high horizontal groove portions 47c are arranged on the rear convex portion 423 like the napkin 1, the position of one of the rear middle and high horizontal groove portions 47c is the rear virtual line ILc. It only needs to match the position of. In this way, when the position of the front imaginary line ILa and the position of the front middle and high horizontal groove part 47a match, and the position of the rear middle and high horizontal groove part 47c and the position of the rear imaginary line ILc match, The fit of the napkin 1 is improved.

In the napkin 1, the groove width of the middle-high lateral groove portion 47 in the middle-high portion 42 of the absorbent core 41 is the groove of the middle-high boundary groove portion 43 from the viewpoints of absorbability of excretory fluid, fit to the body, durability of the absorber, and the like. It is preferably the same or narrower than the width, specifically, preferably 0.1 mm or more, more preferably 0.5 mm or more, and preferably 5.0 mm or less, more preferably 3.0 mm or less. Also, it is preferably 0.1 mm or more and 5.0 mm or less, more preferably 0.5 mm or more and 3.0 mm or less. In addition, the groove width of the middle / high lateral groove portion 47 and the thickness described later are measured in a direction perpendicular to the extending direction of the middle / high lateral groove portion 47 and measured from a photograph of the cut end surface.
In the napkin 1, it is preferable that the thickness of the middle-high lateral groove portion 47 in the middle-high portion 42 of the absorbent core 41 is the same as or higher than the thickness of the middle-high boundary groove portion 43 from the viewpoint of the absorption performance of excretory fluid. , Preferably 0.08 mm or more, more preferably 0.15 mm or more, and preferably 10.0 mm or less, more preferably 8.0 mm or less, and preferably 0.08 mm or more and 10 0.05 mm or less, more preferably 0.15 mm or more and 8.0 mm or less.

In the napkin 1, it is preferable that the basis weight of the middle-high lateral groove portion 47 in the middle-high portion 42 of the absorbent core 41 is lower than the basis weight of the middle-high portion 42 from the viewpoint of fit to the body and absorption performance. It is preferable that the basis weight is higher. Specifically, the basis weight of the middle / high lateral groove portion 47 is preferably 10 g / m ² or more, more preferably 20 g / m ² or more, and preferably 800 g / m ² or less, more preferably 600 g / m ² or less. Specifically, it is preferably 10 g / m ² or more and 800 g / m ² or less, more preferably 20 g / m ² or more and 600 g / m ² or less. The basis weight of the middle / high lateral groove 47 is obtained by dividing the mass of the sample of the middle / high lateral groove 47 cut out as described above by the area of the surface of the sample facing the skin.

  In the napkin 1, as shown in FIG. 2, the absorbent core 41 has a middle-high adjacent portion 44 in a region excluding the middle-high portion 42 in the intermediate region 41M and a region excluding the middle-high boundary groove 43. That is, in the napkin 1, the intermediate region 41 </ b> M in the absorbent core 41 includes the middle / high portion 42, the middle / high boundary groove portion 43, and the middle / high adjacent portion 44. The middle-high adjacent portion 44 includes a front middle-high adjacent portion 44a disposed on the first region 41F side adjacent to the front-side convex portion 422 constituting the middle-high portion 42 and a rear-side convex constituting the middle-high portion 42 in the intermediate region 41M. And a rear middle / higher adjacent portion 44c disposed on the second region 41R side adjacent to the portion 423. In the napkin 1, the front middle-high adjacent portion 44a is formed symmetrically with respect to the center line CL extending in the vertical direction X. In the front middle / higher adjacent portion 44a, the half portion on the side edge 41s side along the longitudinal direction X of the absorbent core 41 than the center line CL has a length in the longitudinal direction X centered from the one side edge 41s. It is formed so as to gradually decrease toward the line CL. In the napkin 1, the rear middle-high adjacent portion 44c is also formed symmetrically with respect to the center line CL extending in the vertical direction X, like the front middle-high adjacent portion 44a. The half of the side edge 41s side along the longitudinal direction X of the absorbent core 41 with respect to the center line CL in the rear middle-high adjacent portion 44c has a length in the longitudinal direction X centered from the one side edge 41s. It is formed so as to gradually decrease toward the line CL.

In the napkin 1, the middle-high adjacent portion 44 has a thickness larger than that of the middle-high boundary groove portion 43 and the middle-high lateral groove portion 47 and the thickness of the middle-high portion 42 in the absorbent core 41 as shown in FIG. 3. Is also formed small. Furthermore, from the viewpoint of followability to the movement of the body, it is preferable that the middle-high adjacent portion 44 has the same thickness as the first region 41F and the second region 41R. In addition, from the viewpoint of the strength of the absorbent core 41 when it is repeatedly deformed with respect to body movement, the middle-high adjacent portion 44 has a thickness larger than the thickness of the first region 41F and the thickness of the second region 41R. May be.
The thickness of the middle-high adjacent portion 44 is preferably 0.5 mm or more, more preferably 1.0 mm or more, preferably 10.0 mm or less, more preferably 7.0 mm or less, and preferably 0.0 mm or less. It is 5 mm or more and 10.0 mm or less, more preferably 1.0 mm or more and 7.0 mm or less.
The thickness of the middle-high adjacent portion 44 is measured based on the method for measuring the thickness of each portion of the absorbent core 41 described above.

In the napkin 1, the middle and high adjacent portions 44 are formed so that the basis weight thereof is smaller than the basis weight of the middle and high portions 42 of the absorbent core 41 and larger than the basis weight of the middle and high boundary groove portions 43 and the middle and high lateral groove portions 47. . Furthermore, from the viewpoint of following the movement of the body, the middle-high adjacent portion 44 has a basis weight equal to or smaller than the basis weight of the first region 41F and the second region 41R in the absorbent core 41. It is preferable that In addition, from the viewpoint of the strength of the absorbent core 41 when it is repeatedly deformed with respect to body movement, the middle-high adjacent portion 44 has a basis weight that is greater than the basis weight of the first region 41F and the basis weight of the second region 41R. May also be larger. Here, the basis weight of the first region 41 </ b> F and the basis weight of the second region 41 </ b> R mean the basis weight of the portion excluding the groove portion 45 when having the groove portion 45. The basis weight of the middle-high adjacent portion 44 is preferably 20 g / m ² or more, more preferably 50 g / m ² or more, and preferably 800 g / m ² or less, more preferably 700 g / m ² or less. Specifically, it is preferably 20 g / m ² or more and 800 g / m ² or less, more preferably 50 g / m ² or more and 700 g / m ² or less. In addition, the basic weight of the middle-high adjacent part 44 is the surface on the skin facing surface side of the sample of the middle-high adjacent part 44 cut out as described in the measuring method of the thickness of each part of the absorbent core 41 described above. Divide by the area of

  As shown in FIG. 2, in the napkin 1, the first core 41 </ b> F and the second region 41 </ b> R are partitioned by a groove 45 and a groove 45 extending in the vertical direction X and the horizontal direction Y when viewed in plan. A plurality of small absorbing portions 46 formed by being formed are arranged. The small absorption part 46 arranged in this way has a basis weight higher than the basis weight of the groove part 45. The groove portions 45 arranged in the first region 41F and the second region 41R include a vertical groove 45X extending in the vertical direction X and a horizontal groove 45Y extending in the horizontal direction Y. The vertical grooves 45X extending in the vertical direction X are arranged with a constant interval in the horizontal direction Y, and the horizontal grooves 45Y extending in the horizontal direction Y are arranged with a constant interval in the vertical direction X. The small absorption part 46 is arranged at the position of the grid defined by the vertical groove 44Y and the horizontal groove 44X. The thickness and basis weight of the first region 41F and the second region 41R described above mean the thickness and basis weight of the small absorbent portion 46.

  In the napkin 1, the first region 41F and the second region 41R have the groove 45 and the small absorption portion 46, and the intermediate region 41M has the middle-high portion 42, the middle-high boundary groove portion 43, the middle-high lateral groove portion 47, and the middle-high adjacent portion 44. The entire sex core 41 is integrally molded. “Integrally molded” means that the same material is used to form parts in one process, unlike the case where members manufactured in different processes are joined by means of bonding, such as adhesives or compression. Means that

The absorbent core 41 of the napkin 1 described above includes, for example, a stacking drum 54 that includes an accumulation recess 55 on the outer peripheral surface and rotates in one direction R, as shown in FIG. 5A, and the stacking drum 54. It can manufacture using the fiber pile apparatus provided with the duct (not shown) which supplies a core material in a scattering state to the outer peripheral surface.
A plurality of stacking recesses 55 are formed at regular intervals in the circumferential direction of the outer peripheral surface of the stacking drum 54. The bottom surface 56 of the accumulation recess 55 is made of a mesh plate or the like and has a large number of pores functioning as suction holes.

  Further, as shown in FIG. 5A, one concave portion 56 b for forming the intermediate region 41 </ b> M of the absorbent core 41 is formed in a part of the bottom surface 56 of the single concave portion 55 for accumulation. . In addition, a first air-impermeable member 57 for forming a middle / high boundary groove portion 43 that divides the middle / high portion 42 and the middle / higher adjacent portion 44 is disposed on the bottom surface of the recess 56 b, thereby forming a middle / high lateral groove portion 47. For this purpose, a third breathable member 59 is disposed. The first breathable member 57 is arranged at a position corresponding to the middle / high boundary groove 43 and is fixed so as to protrude from the bottom surface of the recess 56b. The third non-breathable member 59 is disposed at a position corresponding to the middle / high lateral groove portion 47 and is fixed so as to protrude from the bottom surface of the recess 56b. In addition, a second breathable member 58 for forming the groove 45 is disposed on the bottom surface 56 of the upstream region and the downstream region in the rotation direction R adjacent to the recess 56b. The second breathable member 58 is disposed at a position corresponding to the vertical groove 44Y and the horizontal groove 44X, and is fixed so as to protrude from the bottom surface 56 of the accumulation recess 55. The first breathable member 57, the second breathable member 58, and the third breathable member 59 may be non-breathable members, and are made of, for example, metal, plastic, ceramic, or the like.

  Similarly to the known fiber pile device provided with the fiber pile drum, the core material mixed with the water-absorbing polymer and the pulp fiber is supplied into the duct while sucking from the bottom surface of the accumulation concave portion 55, so that FIG. As shown in (b), the core material is deposited in a predetermined shape in the recesses 55 for accumulation. The precursor of the absorbent core 41 is obtained by releasing the deposit 40 from the accumulation recess 55. The precursor of the absorbent core 41 is covered with a core wrap sheet (not shown), then cut with a rotary cutter or the like, and conveyed in a conveying direction by a conveying means such as a belt conveyor. Thus, the absorptive core 41 is obtained. The absorbent core 41 covered with the core wrap sheet (not shown) obtained in this manner is compressed in an appropriate manner by pressurizing the whole or a part, for example, by passing it between a pair of rolls once or a plurality of times. . Thereby, the part accumulated in the recessed part 56b becomes the middle-high part 42 in which both basic weight and thickness are relatively large. Similarly, the portion made of the core material deposited in the upstream region and the downstream region adjacent to the recess 56b becomes the first region 41F and the second region 41R in the absorbent core 41 having a relatively small basis weight. Further, the portion made of the core material deposited on the first non-breathable member 57 of the recess 56b becomes the middle / high boundary groove 43 that is relatively smaller than the basis weight of the first region 41F and the basis weight of the second region 41R. . Further, the portion made of the core material deposited on the third non-breathable member 59 of the concave portion 56b becomes the middle and high lateral groove portion 47 that is relatively smaller than the basis weight of the first region 41F and the basis weight of the second region 41R. . The portion made of the core material deposited on the second non-breathable member 58 in the upstream region and the downstream region adjacent to the recess 56 b becomes the groove portion 45 that is relatively smaller than the basis weight of the small absorbent portion 46.

The formation material of each structural member of the napkin 1 of this embodiment mentioned above is demonstrated.
The skin side sheet 2 that forms the skin facing surface is made of a material that has liquid permeability and includes a thermoplastic synthetic resin. For example, a fiber nonwoven fabric such as an air-through fiber nonwoven fabric, a spunbond nonwoven fabric, or a point bond nonwoven fabric is suitable. Can be used. Examples of the thermoplastic resin include, but are not limited to, olefin polymers such as ethylene and propylene, or polyethylene terephthalate. For example, the skin-side sheet 2 preferably has a basis weight of 10 to 100 g / m ² and a thickness of 0.5 to 5.0 mm. Moreover, the skin side sheet | seat 2 can use the thing similar to what was conventionally used in the said technical field without a restriction | limiting especially, A perforated film etc. can also be used.

The non-skin-side sheet 3 is made of a material having poor liquid permeability or impermeability and containing a thermoplastic synthetic resin. For example, a synthetic resin film, a laminate of a synthetic resin film and a nonwoven fabric, or a span Water-repellent nonwoven fabric with high water pressure resistance such as bond-melt blown-spunbond laminated fiber nonwoven fabric, air-through fiber nonwoven fabric, point bond fiber nonwoven fabric, spunbond fiber nonwoven fabric can be used, but is not limited thereto, The thing similar to what was conventionally used in the said technical field can be especially used without a restriction | limiting. For example, the non-skin side sheet 3 preferably has a basis weight of 10 to 50 g / m ² and a thickness of 8 to 200 μm.

The core material of the absorbent core 41 includes a fiber assembly made of a fiber material such as pulp fiber. As the fiber material, various materials conventionally used for absorbent articles of absorbent articles such as sanitary napkins, panty liners, and disposable diapers can be used without particular limitation. For example, pulp fibers, rayon fibers, cotton Short fibers of cellulosic fibers such as fibers, short fibers of synthetic fibers such as polyethylene, and the like are used. These fibers can be used alone or in combination of two or more. Moreover, it is preferable that the fiber material is entirely or partly pulp fiber, and the ratio of the pulp fiber in the fiber material is preferably 50 to 100% by mass, more preferably 80 to 100% by mass, More preferably, it is 100 mass%.
The absorbent core 41 may contain a water-absorbing polymer. Examples of water-absorbing polymers include sodium polyacrylate, (acrylic acid-vinyl alcohol) copolymer, cross-linked sodium polyacrylate, (starch-acrylic acid) graft copolymer, and (isobutylene-maleic anhydride) copolymer. Examples thereof include a polymer and a saponified product thereof, and polyaspartic acid. By containing the water-absorbing polymer, it is possible to more quickly absorb and retain a large amount of excretory fluid such as blood. Moreover, you may mix | blend a deodorizer, an antibacterial agent, etc. with the absorptive core 41 as needed.

  Examples of the core wrap sheet (not shown) that covers the absorbent core 41 include tissue paper and water-permeable nonwoven fabric. The absorbent body 4 is formed by covering the upper and lower surfaces of the absorbent core 41 with a core wrap sheet (not shown). The core wrap sheet (not shown) is used for the purpose of preventing leakage of the forming material of the absorbent core 41 or improving the shape retention of the absorbent core 41. A core wrap sheet (not shown) for covering the skin facing surface side of the absorbent core 41 and the skin side sheet 2 and a core wrap sheet (not shown) for covering the non-skin facing surface side of the absorbent core 41; It is preferable that the non-skin side sheet 3 is bonded to each other by a pattern-coated adhesive such as a dot, a spiral, or a stripe.

  As the side sheet 5, various types conventionally used in the technical field can be used without particular limitation, for example, a liquid-impermeable or water-repellent resin film, a laminate of a resin film and a nonwoven fabric, or the like. Can be used. As other materials, for example, a spunbond nonwoven fabric, a sheet (for example, SM, SMS, SMMS, etc.) in which a spunbond nonwoven fabric (S) and a melt blown nonwoven fabric (M) are combined, a heat roll nonwoven fabric, an air-through nonwoven fabric, etc. A water-repellent (hydrophobic) non-woven fabric may be mentioned.

The joint portion 6 that joins the side sheet 5 and the skin side sheet 2 can be formed in accordance with a conventional method by heat sealing.
The linear pressing groove 7 (the first horizontal pressing groove 71, the second horizontal pressing groove 72, the vertical pressing groove 73, and the second vertical pressing groove 73A) is compressed with or without heat (so-called embossing), or It can be formed according to a conventional method by embossing such as ultrasonic embossing.

The effect of the napkin 1 of this embodiment mentioned above is demonstrated.
As shown in FIGS. 1 to 2, the napkin 1 has a middle and high portion 42 having a high thickness and a high basis weight in the intermediate region 41 </ b> M of the absorbent core 41, and the middle and high portion 42, as shown in FIG. 2, In the plan view of the absorbent core 41, a middle-high center portion 421 extending over the entire length in the lateral direction Y, and a front protruding from the front end portion in the longitudinal direction X of the middle-high center portion 421 toward the first region 41F side It has a side convex portion 422 and a rear side convex portion 423 that is convex from the rear end portion of the longitudinal direction X of the middle-high center portion 421 toward the second region 41R side. Therefore, even if the napkin 1 which is an absorbent article is worn in a slightly shifted state, the absorption performance of body fluid can be sufficiently exhibited. And at least one of the front side convex part 422 and the back side convex part 423 has the middle-high horizontal groove part 47. As shown in FIG. Therefore, the front side convex part 422 or the rear side convex part 423 having the middle and high lateral groove part 47 is less likely to give the wearer a sense of incongruity due to excellent followability to the body shape, and there is a gap between the wearer's skin. It is difficult to occur and sufficient absorption performance can be exhibited. Thus, even if the napkin 1 is worn in a slightly displaced state, the napkin 1 is excellent in fit to the body shape and can exhibit sufficient absorption performance.

  In addition, as shown in FIG. 2, the napkin 1 includes a middle-high portion 42 and a middle-high boundary groove portion 43 having a low basis weight that partitions a portion other than the middle-high portion 42 in the intermediate region 41 </ b> M of the absorbent core 41. One end of the middle / high lateral groove 47 is in contact with the middle / high boundary groove 43. Therefore, when the napkin 1 is worn, the front side convex portion 422 or the rear side convex portion 423 is easily bent due to the middle and high horizontal groove portions 47, and is more excellent in followability to the body shape, and between the wearer's skin. It is difficult to form a gap in the surface, and sufficient absorption performance can be expressed. In particular, in the napkin 1, the middle-high horizontal groove portion 47 has the front middle-high horizontal groove portion 47 a on the front-side convex portion 422 and the rear middle-high horizontal groove portion 47 c on the rear-side convex portion 423. Therefore, when the napkin 1 is worn, the front convex portion 422 and the rear convex portion 423 are easily bent due to the middle and high lateral groove portions 47, and more excellent in conformity to the body shape, and sufficient absorption performance can be exhibited. . Further, in the napkin 1, as shown in FIG. 2, the front middle / high horizontal groove portion 47a extends over both sides 422s and 422s of the front convex portion 422, and both ends of the front middle / high horizontal groove portion 47a are formed on both sides 422s and 422s. It is in contact with the front middle / high boundary groove 43a extending along the different portion. Similarly, the rear middle / high horizontal groove 47c extends over both sides 423s and 423s of the rear-side convex part 423, and both ends of the rear middle / high horizontal groove 47c extend along the both sides 423s and 423s. And touches at different parts. For this reason, when the napkin 1 is worn, the front convex portion 422 and the rear convex portion 423 are more easily bent due to the middle and high lateral groove portions 47, more excellent in conformity to the body shape, and sufficient absorption performance is exhibited. it can.

  Moreover, in the napkin 1, as shown in FIG. 2, the front side convex part 422 is gradually narrowed in the lateral direction Y from the middle-high center part 421 toward the first region 41F side, and the rear side convex part. The length 423 in the lateral direction Y gradually decreases from the middle-high central portion 421 toward the second region 41R side. For this reason, when the napkin 1 is worn, the corresponding portions of the front convex portion 422 and the rear convex portion 423 of the middle-high portion 42 can easily enter the gap, and the followability to the body shape is further excellent. Moreover, since the napkin 1 has the groove part 45 and the small absorption part 46 in the 1st area | region 41F and the 2nd area | region 41R in the absorptive core 41 as shown in FIG. 2, it bend | folds from the groove part 45 as the starting point. It is easy and it is difficult to give the wearer a sense of incongruity.

  Further, as shown in FIG. 2, the napkin 1 has a front middle-high adjacent portion disposed on the first region 41 </ b> F side adjacent to the front convex portion 422 constituting the middle-high portion 42 in the intermediate region 41 </ b> M of the absorbent core 41. 44a and a rear middle-high adjacent portion 44c disposed on the second region 41R side adjacent to the rear-side convex portion 423 constituting the middle-high portion 42. The middle and high adjacent portions 44 have a thickness that is equal to or smaller than the thickness of the first region 41F and the second region 41R in the absorbent core 41 and is smaller than the thickness of the middle and high portions 42. Therefore, even if the napkin 1 is worn in a slightly shifted state, it is difficult to form a gap with the wearer's skin, and sufficient absorption performance can be exhibited. In the napkin 1, the basis weight of the middle-high adjacent portion 44 is smaller than the basis weight of the first region 41F and the second region 41R in the absorbent core 41 and larger than the basis weight of the middle-high boundary groove 43. Therefore, the effect which reduces the discomfort to a wearer among the said effects can be show | played further.

In particular, when the napkin 1 is worn over a long period of time, when the napkin 1 is repeatedly deformed by the movement of the body, there is a possibility that the middle-high adjacent portion 44 may be damaged to impair the absorption performance. The thickness of the portion 44 may be larger than the thickness of the first region 41F and the second region 41R in the absorbent core 41.
Furthermore, when the middle-high adjacent portion 44 is damaged due to repeated deformation due to body movement and the absorption performance is impaired, the basis weight of the middle-high adjacent portion 44 is the first region 41F and the second region of the absorbent core 41. It may be larger than the basis weight of the region 41R.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, the absorbent article of this invention is not restrict | limited to the napkin 1 of this embodiment at all, and can be changed suitably.

  For example, in the front side convex part 422 in the absorbent core 41 of the napkin 1, as shown in FIG. 2, the side edges 422s and 422s are not bent, and the side edges 41s along the longitudinal direction X of the absorbent core 41 are not bent. It extends straight and straight toward the top portion 422t, and the width d of the front convex portion 422 gradually decreases from the side edge 41s along the longitudinal direction X of the absorbent core 41 toward the top portion 422t. However, if the width d of the front-side convex portion 422 is merely gradually reduced, it may be gradually reduced. The front-side convex portion 422 extends straight and straight, and the width d of the front-side convex portion 422 gradually decreases from both side edges 41s, 41s along the longitudinal direction X of the absorbent core 41 toward the top portion 422t. By doing, it is preferable from the point that the mold release property at the time of releasing from the said accumulation recessed part 55 in the said fiber stacking apparatus improves in addition to the improvement to the fitting property to a body. The same applies to the rear convex portion 423.

  The first region 41F and the second region 41R of the napkin 1 have the same thickness, but may have different thicknesses as long as they are smaller than the thickness of the middle-high portion 42. Moreover, although the basic weight of the 1st area | region 41F and the 2nd area | region 41R of the napkin 1 is the same as long as it is smaller than the basic weight of the middle-high part 42, a mutually different basic weight may be sufficient. Further, the first region 41F and the second region 41R of the napkin 1 have the groove 45 and the small absorption portion 46, but may not have the groove 45 and the small absorption portion 46 having different shapes. You may do it.

  Further, the napkin 1 has the middle and high portions 42 in the excretion facing area B, but may extend from the excretion facing area B to a part on the front area A side or the rear area C side. For example, the front-side convex portion 422 extends from the middle-high center portion 421 of the excretion-facing area B to the front area A, and the rear-side convex portion 423 extends from the middle-high center portion 421 of the excretion-facing area B to the rear area C. It may extend to. In this way, when the middle-high portion 42 extends from the excretion-facing area B to the front section A side or the rear section C side, the middle-high section 42 is the outer peripheral area of the middle-high section 42 in the front section A or the rear section C. The thickness is thicker than the part.

  Moreover, although the whole absorptive core 41 of the napkin 1 is integrally molded, it does not need to be integrally molded. For example, in the absorptive core 41, the core material is formed at the same height from the first region 41F to the second region 41R, and then the core material formed by another core material is disposed. 42 may be formed.

  Further, as shown in FIG. 1, the napkin 1 is provided with side sheets 5 on both sides along the longitudinal direction X of the skin facing surface of the skin side sheet 2, but at the free end of the side sheet 5, A leak-proof cuff may be formed by arranging an elastic member extending in the longitudinal direction X.

  In addition, the napkin 1 includes one of two folding curves (not shown) that traverse the absorbent article in the transverse direction Y, which is generated when the absorbent article is folded into a three-fold individual form. It is preferable that the position of the front middle / high horizontal groove portion 47a of the front side convex portion 422 is coincident from the standpoints of storage property at the time of individual packaging, portability, and prevention of leakage from a fold line during use. It is preferable that the position of the second folding line and the position of the rear middle / high horizontal groove portion 47c of the rear-side convex portion 423 coincide with each other when counted from the front end in the longitudinal direction X of the absorbent article.

  In addition, as shown in FIG. 2, the napkin 1 has the same number of front middle and high horizontal groove portions 47a and rear middle and high horizontal groove portions 47c arranged on the front convex portion 422 or the rear convex portion 423, but with different numbers. There may be.

  Moreover, in the napkin 1 shown in FIG. 1, the linear pressing groove 7 by which the skin side sheet | seat 2 and the absorptive core 41 were squeezed and integrated is the 1st horizontal pressing groove 71 of the front area A, as shown in FIG. A ring-shaped circumferential groove formed from one longitudinal pressing groove 73, the first lateral pressing groove 71 in the rear section C, and the other longitudinal pressing groove 73, and a pair of second grooves independent of the entire circumferential groove. Although it is the form which has the vertical pressing grooves 73A and 73A, the form of another shape may be sufficient. For example, the linear pressing groove 7 does not have the pair of second vertical pressing grooves 73A and 73A, but the first horizontal pressing groove 71 in the front area A, one vertical pressing groove 73, and the first horizontal pressing groove 73 in the rear section C. The form which has only the ring-shaped perimeter groove | channel formed from the pressing groove 71 and the other vertical pressing groove 73 may be sufficient.

  Further, the absorbent core 41 of the napkin 1 is formed so that the groove portion 45 is recessed from the skin facing surface side toward the non-skin facing surface side, but the groove portion 45 is directed from the non-skin facing surface side to the skin facing surface side. It may be formed so as to be recessed. Thereby, liquid diffusibility and liquid retention are improved.

  Further, in the napkin 1, the size of the front area A of the napkin 1 and the size of the first region 41F of the absorbent core 41 are substantially the same, but may not be the same. Moreover, although the magnitude | size of the back area C of the napkin 1 and the magnitude | size of the 2nd area | region 41R of the absorptive core 41 are substantially corresponded, it does not need to correspond.

  In addition to the sanitary napkin, the absorbent article of the present invention may be a panty liner (cage sheet), an incontinence pad, or the like.

  EXAMPLES Hereinafter, although this invention is further demonstrated using an Example, this invention is not restrict | limited at all by such an Example.

[Example 1]
A sanitary napkin having the same basic configuration as that of the napkin 1 shown in FIGS. An air-through nonwoven fabric with a basis weight of 30 g / m ² is used as the skin side sheet, a non-moisture permeable polyethylene film sheet with a basis weight of 25 g / m ² is used as the non-skin side sheet, and a basis weight of 20 g / m ² is used as the side sheet. An aqueous spunbond nonwoven was used. As the absorbent core, the one shown in FIG. 2 was used. The absorbent core 41 was formed as a mixed fiber of pulp fibers and water-absorbing polymer. The absorbent core 41 has a middle-high portion 42 in the intermediate region 41M, and the middle-high portion 42 has a front-side convex portion at each of a middle-high center portion 421 covering the entire width of the absorbent core 41 and front and rear end portions of the middle-high center portion 421. 422 and a rear-side convex portion 423. The thickness of the middle-high portion 42 was 7.0 mm, and the thickness of the first region 41F and the thickness of the second region 41R were 3.0 mm. The basis weight of the middle-high portion 42 was 450 g / m ² , and the basis weight of the first region 41F and the basis weight of the second region 41R were 240 g / m ² . Moreover, the full length L2 of the vertical direction X of the middle-high part 42 was 120 mm, and the full length L1 of the longitudinal direction X of the absorptive core 41 was 190 mm, and it was 63%. Further, one middle / high horizontal groove portion 47 is arranged on each of the front convex portion 422 and the rear convex portion 423. The middle and high lateral groove portion 47 is arranged over the entire width of the front side convex portion 422 and the rear side convex portion 423, the groove width is 2 mm, the thickness is 2 mm, and the basis weight is 100 g / m ^2. Met. Thickness and basic weight were measured by the method mentioned above. Moreover, the maximum length of the absorptive core in the horizontal direction Y was the same as the maximum length in the horizontal direction Y of the middle-high central portion 421.
The absorbent core having the above configuration was covered with tissue paper to form an absorbent body, and sandwiched between the skin side sheet and the non-skin side sheet to obtain the napkin of Example 1. Between the absorber and the skin side sheet and between the absorber and the non-skin side sheet were joined via an adhesive.

[Comparative Example 1]
A napkin of Comparative Example 1 was produced in the same manner as the napkin of Example 1 except that a sanitary napkin was produced using the absorbent core 41 ′ having the form shown in FIG. The absorbent core 41 ′ shown in FIG. 6 has an intermediate / high portion 42 ′ that is not formed over the entire width of the absorbent core 41 ′ as compared with the absorbent core shown in FIG. 2. It was arranged at the central portion in the lateral direction of the core 41 '. In addition, a groove portion extending in the vertical direction X and the horizontal direction Y is disposed in the middle / high portion 42 ′, and a small absorption portion is disposed at the position of the lattice defined by the groove portion. The basis weight of the small absorption part of the middle and high part 42 ′ was 450 g / m ² , and the basis weight of the area around the middle and high part 42 ′ was 240 g / m ² .

[Evaluation]
After the napkin of Example 1 and the napkin of Comparative Example 1 were worn in the usual manner by the following methods, the absorption range, absorbability, and flexibility of each of the napkin of Example 1 and the napkin of Comparative Example 1 were Property, liquid diffusibility, and side leakage were evaluated according to the following evaluation criteria.

・ Evaluation criteria for absorption range: “A absorption range is sufficient”, “B absorption range is slightly good”, “C absorption range is slightly narrow”, “D absorption range is narrow”
・ Evaluation criteria for absorbency: “A absorbency is sufficient”, “B absorbability is slightly good”, “C absorbability is somewhat anxious”, “D absorbability is anxious”
・ Evaluation criteria for flexibility and fit: “A flexibility is sufficient and fit is good”, “B flexibility is slightly good and fit is good”, “C is slightly hard and fit is slightly bad”, “D Hard fit is bad”
・ Evaluation criteria for liquid diffusivity: “A liquid diffusibility is sufficient”, “B liquid diffusibility is slightly good”, “C liquid diffusivity is somewhat uneasy”, “D liquid diffusivity is uneasy "

  As is clear from the results shown in Table 1, it was found that the napkin of Example 1 had a sufficient absorption range and sufficient absorbency compared to the napkin of Comparative Example 1. It was also found to be excellent in flexibility. Furthermore, the napkin of Example 1 had good liquid diffusibility and no side leakage. If such a napkin of Example 1 is used, it is difficult to give the wearer a sense of incongruity by being excellent in the fit to the body shape even if worn in a slightly displaced state, and there is a gap between the skin of the wearer It can be expected that sufficient absorption performance can be exhibited.

1 Sanitary napkin (absorbent article)
A Front area B Excretion opposing area C Rear area 2 Skin side sheet 3 Non-skin side sheet 4 Absorber 41 Absorbent core 41F Absorbent core first area 41M Absorbent core intermediate area 41R Absorbent core second area 42 Middle-high portion 421 Middle-high central portion 422 Front convex portion 423 Rear-side convex portion 43 Middle-high boundary groove portion 44 Middle-high adjacent portion 45 Groove portion 46 Small absorption portion 47 Middle-high transverse groove portion 47a Front middle-high transverse groove portion 47c Rear middle-high transverse groove portion 5 Side seat 6 Joint portion 7 Linear compressed grooves

Claims (8)

An absorbent article having a longitudinally long absorbent core corresponding to the longitudinal direction of the wearer and having a front area and a rear area,
The absorbent core has an intermediate region between a first region located on the front region side and a second region located on the rear region side, and the intermediate region includes the first region and the second region. It has a middle and high part having a thickness higher than that in the first region and a basis weight higher than the basis weight in the first region and the second region,
The middle-high portion extends in the longitudinal direction according to both side edges extending in the longitudinal direction of the absorbent core in a plan view of the absorbent core and extending in the transverse direction perpendicular to the longitudinal direction of the absorbent core. A middle high section extending to a predetermined length, one front convex section projecting from the front end in the vertical direction of the middle high section toward the first region, and the vertical direction of the middle high section A rear-side convex portion that is convex from the rear end portion toward the second region side,
The middle-high portion has an intermediate-high lateral groove portion extending in a lateral direction in at least one of the front-side convex portion and the rear-side convex portion in plan view of the absorbent core.   2. The absorbent article according to claim 1, wherein the absorbent core has a maximum horizontal length that is the same as a maximum horizontal length of the middle-high central portion. The absorbent core has a middle-high boundary groove portion that defines a boundary between the middle-high portion and a portion other than the middle-high portion in the intermediate region,
The middle and high boundary groove portions are formed with a basis weight lower than the basis weight of the first region and the second region in the absorbent core,
The absorptive article according to claim 1 or 2 in which one end of said middle-high horizontal groove part is in contact with said middle-high boundary groove part. The middle and high boundary grooves are arranged over the entire length in the lateral direction of the absorbent core,
The absorptive article according to claim 3 in which both ends of said middle-high lateral groove part are in contact with a different portion in said middle-high boundary groove part. When the absorbent core is viewed in plan, the front side convex portion gradually decreases in length in the lateral direction from the middle-high center portion toward the first region side, and the rear side convex portion is the middle-high center. The length in the lateral direction gradually decreases from the portion toward the second region side,
In the plan view of the absorbent core, in the first region and the second region, a groove portion extending in the vertical direction and the horizontal direction and a plurality of small absorption portions formed by partitioning by the groove portion are arranged. The absorbent article according to any one of claims 1 to 4, wherein the small absorbent portion has a basis weight higher than a basis weight of the groove portion.   The surface area of the middle-high central portion is larger than the surface area of the front-side convex portion and the surface area of the rear-side convex portion, respectively, in plan view of the absorbent core. Absorbent articles. The middle and high lateral groove portions are respectively disposed on the front side convex portion and the rear side convex portion,
The absorbent article comprises a skin-side sheet that forms a skin-facing surface, a non-skin-side sheet that forms a non-skin-facing surface, and the absorbent core interposed between both sheets,
The absorbent article includes a linear squeezing groove in which the skin side sheet and the absorbent core are squeezed and integrated,
The linear pressing groove has a pair of vertical pressing grooves extending in the vertical direction of the absorbent core, and a pair of second vertical pressing grooves on the outer side in the lateral direction of the pair of vertical pressing grooves,
The said 2nd vertical pressing groove is distribute | arranged between the said middle-high horizontal groove part of the said front side convex part, and the said middle-high horizontal groove part of the said rear side convex part, The any one of Claims 1-6. Absorbent articles. The middle and high lateral groove portions are respectively disposed on the front side convex portion and the rear side convex portion,
A pair of wing parts are provided on both sides along the longitudinal direction of the absorbent article, and the position of the front imaginary line connecting the roots located on the front area side in the pair of wing parts and the front convex part The positions of the middle and high horizontal groove portions coincide with each other, and the position of the rear imaginary line connecting the roots located on the rear section side in the pair of wing portions and the position of the middle and high horizontal groove portions of the rear convex portion The absorptive article according to any one of claims 1 to 7 with which they correspond.

Images