WO2017199419A1 - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
WO2017199419A1
WO2017199419A1 PCT/JP2016/064994 JP2016064994W WO2017199419A1 WO 2017199419 A1 WO2017199419 A1 WO 2017199419A1 JP 2016064994 W JP2016064994 W JP 2016064994W WO 2017199419 A1 WO2017199419 A1 WO 2017199419A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
absorbent core
absorbent article
absorbent
basis weight
Prior art date
Application number
PCT/JP2016/064994
Other languages
French (fr)
Japanese (ja)
Inventor
由佳 林
祐一 廣瀬
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to SG11201804895WA priority Critical patent/SG11201804895WA/en
Priority to JP2017540283A priority patent/JP6221020B1/en
Priority to PCT/JP2016/064994 priority patent/WO2017199419A1/en
Priority to MYPI2017001112A priority patent/MY185821A/en
Priority to CN201680008037.6A priority patent/CN107847365A/en
Priority to TW106116409A priority patent/TWI737731B/en
Publication of WO2017199419A1 publication Critical patent/WO2017199419A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47Sanitary towels, incontinence pads or napkins
    • A61F13/472Sanitary towels, incontinence pads or napkins specially adapted for female use
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47Sanitary towels, incontinence pads or napkins
    • A61F13/475Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47Sanitary towels, incontinence pads or napkins
    • A61F13/476Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression

Definitions

  • the present invention relates to absorbent articles such as sanitary napkins and incontinence pads.
  • the applicant of the present invention provides an absorbent core of the absorbent article in which a middle and high portion having a large basis weight is provided in an excretion-facing area disposed opposite to the liquid excretion portion of the wearer, or a lateral groove having a low basis weight in the middle and high portion.
  • a method for preventing liquid leakage by diffusing the liquid without staying at the excretion point by providing (for example, Patent Documents 1 to 2).
  • Patent Document 1 proposes a technique that includes a surface structure having a middle-high portion that protrudes toward the skin side on a surface directed toward the skin side of the wearer, and a concave portion over the entire circumference of the middle-high portion.
  • the absorptive article given in patent documents 1 it is excellent in fit nature and absorptivity, and can prevent a liquid leak.
  • Patent Document 2 an absorbent article including an absorbent core having a plurality of absorbing portions partitioned into a block shape by the groove portions in which the middle and high regions and the groove portions are integrally formed is proposed. According to the absorbent article described in Patent Document 2, there is little discomfort due to the breakage of the absorbent core, and liquid return of the absorbed liquid is less likely to occur, thereby preventing liquid leakage.
  • the present invention relates to an absorbent article having a longitudinally long absorbent core corresponding to a wearer's longitudinal direction and having a front area and a rear area.
  • the absorbent core has an intermediate region between a first region located on the front side and a second region located on the rear side, and the intermediate region includes the first region and the second region. It is provided with a middle-high portion having a greater thickness than the thickness in FIG.
  • the middle-high portion has a maximum width portion in which the length in the lateral direction orthogonal to the longitudinal direction of the absorbent core is maximized in a plan view of the absorbent core.
  • the length is the same as the lateral length of the absorbent core.
  • 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.
  • or FIG.6 (f) is a top view by the side of the skin opposing surface in a part of absorptive core with which the sanitary napkin which is other preferable embodiment of the absorbent article of this invention is provided.
  • FIG. 7 is a top view which shows the skin opposing surface side (skin side sheet
  • FIG. 8: is a top view which shows the skin opposing surface side (skin side sheet
  • 9 is a plan view of the skin facing surface side of the absorbent core included in the napkin of Example 1.
  • FIG. 7 is a top view which shows the skin opposing surface side (skin side sheet
  • FIG. 8 is a top view which shows the skin opposing surface side
  • FIG. 10 (a) is a plan view of the skin facing surface side of the absorbent core of the napkin of Comparative Example 1
  • FIG. 10 (b) is a plane of the skin facing surface side of the absorbent core of the napkin of Comparative Example 2.
  • FIG. 10C is a plan view of the skin facing surface side of the absorbent core of the napkin of Comparative Example 3.
  • FIG. 11 is a graph showing the results of measuring the rigidity values of the napkin of Example 1 and the napkins of Comparative Examples 1 to 3.
  • an object of the present invention is to provide an absorbent article that can eliminate the above-mentioned drawbacks of the prior art.
  • the 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.
  • seat side is shown by FIG.
  • the napkin 1 of the present embodiment includes an absorbent core 41 having a shape that is long in the longitudinal direction X, and includes a front section A and a rear section C.
  • 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.
  • 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).
  • the length in the longitudinal direction X means “length” which is a distance measured in the longitudinal direction X
  • the length in the lateral direction Y is It means “width” which is a distance measured in the horizontal 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.
  • the skin facing surface is a surface directed toward the wearer's skin when the absorbent article (napkin 1) is worn in the absorbent article (napkin 1) or a component thereof, and is non-skin facing A surface is a surface in the absorbent article (napkin 1) or a component thereof directed to the side opposite to the skin side (clothing side) when the absorbent article (napkin 1) is worn.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • seat 3, and the absorber 4 may be joined by the adhesive agent.
  • the side sheets 5 are arranged on both side portions along the vertical direction X on the skin facing surface of the skin side sheet 2, as shown in FIG.
  • 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.
  • 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.
  • 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.
  • the side flap portions 1S project greatly outward in the lateral direction Y in the excretion facing area B, and thereby on the left and right sides along the vertical direction X of the napkin 1, A pair of wing portions 1W, 1W are extended.
  • 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.
  • 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.
  • a linear compressed groove in which the skin side sheet 2 and the absorbent body 4 are integrally recessed toward the non-skin side sheet 3 side on the skin facing surface of the skin side sheet 2. 7 is formed.
  • “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.
  • each line may be a continuous line or a broken line, and the linear pressing groove 7 of the napkin 1 is comprised from the row
  • the linear squeezing groove 7 has a first lateral squeezing groove 71 extending in the transverse direction Y in each of the front area A and the rear area C of the absorbent body 4 and both side portions along the longitudinal direction X of the excretion facing area B of the absorbent body 4. And a vertical pressing groove 73 extending in the vertical direction X.
  • the first lateral pressing groove 71 has a curved shape that protrudes outward in the longitudinal direction X
  • 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.
  • 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 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.
  • An intermediate region 41M is provided between the two.
  • the intermediate region 41M includes a middle-high portion 42.
  • the intermediate area 41M is disposed in the excretion facing area B. More specifically, 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 intermediate region 41 ⁇ / b> M of the absorbent core 41.
  • 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.
  • the napkin 1 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. is 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.
  • 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.
  • the intermediate region 41M is thicker than the thickness of the absorbent core 41 in each region of the first region 41F located in front of the intermediate region 41M and the second region 41R located behind the intermediate region 41M.
  • 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.
  • the thickness of the middle-high portion 42 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.
  • the middle-high portion 42 is formed to have a thickness larger than the thickness of the first region 41F in the absorbent core 41, and more than the basis weight of the first region 41F in the absorbent core 41. The amount is formed high.
  • the thickness of the middle-high portion 42 is formed to be thicker than the thickness of the second region 41 ⁇ / b> R in the absorbent core 41, and the second region 41 ⁇ / b> R in the absorbent core 41 is formed.
  • the basis weight is higher than the basis weight.
  • the thickness and the basis weight of each of the first region 41F and the second region 41R to be compared with the thickness and the basis weight of the middle and high part 42,
  • region 41R does not exist are meant.
  • 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%.
  • 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 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.
  • 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 2 It is 0.0 mm or more and 10.0 mm or less, More preferably, it is 3.0 mm or more and 7.0 mm or less.
  • 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.
  • 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.
  • 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.
  • the thickness of the first region 41F or the second region 41R includes a groove 45 described later. It is preferable that the portion not formed is formed substantially uniformly, but in the case where a gradual increase or decrease in thickness is provided in the horizontal direction Y or the vertical direction X of the first region 41F or the second region 41R. It is sufficient that the above relationship is satisfied in the thickest part.
  • 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.
  • a thickness gauge PEACOCK DIAL UPRIGHT GAUGES R5-C (manufactured by OZAKI MFG.CO.LTD.) Is used for measuring the thickness.
  • 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.
  • the thickness is measured so as not to include a groove 45 described later.
  • 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.
  • 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.
  • the middle-high portion 42 has a maximum width portion in which the length in the horizontal direction Y orthogonal to the longitudinal direction X of the absorbent core 41 is maximized when the absorbent core 41 is viewed in plan view.
  • the length in the horizontal direction Y of the part is the same as the length in the horizontal direction Y of the absorbent core 41.
  • the middle-high portion 42 has a plan view of the absorbent core 41, and the maximum width portion of the middle-high portion 42 extends in the longitudinal direction X according to both side edges along the longitudinal direction X of the absorbent core 41. It has a middle-high central portion 421 formed to extend to a predetermined length.
  • the middle-high center portion 421 extends in a band shape between both side edges 41s, 41s along the longitudinal direction X of the absorbent core 41, and extends over the entire length of the belt-shaped middle-high center portion 421 in the longitudinal direction X. And has the maximum width portion of the middle-high portion 42.
  • the length in the lateral direction Y of the maximum width portion of the middle-high central portion 421 is the same as the width of the absorbent core 41.
  • the width of the absorbent core 41 means the width of the absorbent core 41 including the middle and high portions 42.
  • the middle-high portion 42 when the middle-high portion 42 is viewed in a cross-section in the lateral direction Y, the middle-high position located on the skin contact surface side rather than the height position of the surface on the skin contact surface side of the adjacent first region 41F and second region 41R. If the width of the part 42 (skin side width) is the same as or larger than the width of the middle high part 42 (non-skin side width) located on the non-skin contact surface side, the maximum width of the middle high part 42 is the width of the absorbent core 41. Is the same. However, it is desirable that the maximum width portion of the middle-high portion 42 has substantially the same skin-side width and non-skin-side width, and particularly preferably substantially uniform in the thickness direction.
  • the absorbent core 41 it is preferable to make the area of the middle and high central portion 421 as wide as possible so that sufficient absorbent performance can be exhibited even if the absorbent article is worn with the absorbent article slightly shifted. From such a viewpoint, it is preferable that the middle and high central portion 421 has a constant interval between the side edges 41s and 41s along the longitudinal direction X of the absorbent core 41 in the maximum width portion. It is more preferable that each of them is parallel to the longitudinal direction X and is linear.
  • 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.
  • the width of the absorbent core 41 are slightly different, for example, within the range of a difference of about 5% of the width of the maximum width portion, the same width is used.
  • the maximum width means the distance at the longest position in the lateral direction Y.
  • the length in the lateral direction Y at the maximum width portion in the lateral direction Y of the middle-high portion 42 is the same as the maximum length in the lateral direction Y in the intermediate region 41 ⁇ / b> M of the absorbent core 41. This is the same as the maximum length of the core 41 in the lateral direction Y.
  • 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. 3. 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.
  • the middle-high center portion 421 has a smaller basis weight from the center portion in the lateral direction Y toward the side edge portions in 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 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 a 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.
  • the middle-high part 42 becomes a form which does not have a recessed part with a basis weight lower than the basis weight of the 1st area
  • 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. If a concave portion having a low basis weight is present on the skin contact surface side of the middle and high portions 42, unexpected wrinkles and folds are likely to occur in the napkin 1.
  • the low basis weight concave portion is a vertical groove portion that vertically cuts the middle high portion 42 in the vertical direction X on the skin contact surface of the middle high portion 42
  • the middle high portion 42 is divided in the width direction by the vertical groove. It is easy to become wrinkled along the vertical direction on the napkin 1 starting from the longitudinal groove when worn, and the absorbent core may be divided by the movement of the wearer of the napkin 1 based on the longitudinal groove. It is assumed that this can happen. When the absorbent core is divided in this manner, a gap is easily formed between the napkin 1 and the body, or the absorption capacity is remarkably reduced, which causes so-called liquid leakage.
  • the middle-high portion 42 has a front-side convex portion 422 whose length in the lateral direction Y is narrower than the maximum width portion of the middle-high portion 42 from the middle-high central portion 421 toward the front section A side or the rear section C side. Or the rear side convex part 423 is provided.
  • the middle-high portion 42 is a front-side convex portion that is convex from the front end portion in the longitudinal direction X of the middle-high center portion 421 toward the first region 41F side in a plan view of the absorbent core 41 as shown in FIG.
  • the middle-high portion 42 is The front side convex portion 422 and the rear side convex portion 423 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.
  • one front convex portion 422 is arranged at the front end portion of the middle / high center portion 421, and the rear convex portion 423 is the rear end portion of the middle / high center portion 421.
  • the front side convex part 422 is arranged on the center line CL in which the top part 422t of the front side convex part 422 extends in the vertical direction X, and both side edges 422s and 422s forming the front side convex part 422 are the top parts 422t.
  • 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. 423s and 423s extend from the top portion 423t to the side edge 41s along the longitudinal direction X of the absorbent core 41, respectively.
  • the front convex portion 422 and the rear convex portion 423 in the absorbent core 41 are respectively apexes 422 t that are located in the central portion in the lateral direction Y from both side portions along the longitudinal direction X. , 423t, the width d gradually decreases.
  • 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.
  • 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.
  • 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 ⁇ 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.
  • the full length L1 shows the distance in the longest position in the vertical direction X of the absorptive core 41
  • the full length L2 means the distance in the longest position in the vertical direction X of the middle-high part 42.
  • the overall length L3 in the longitudinal direction X of the middle-high central portion 421 constituting the middle-high portion 42 is preferably 20% or more, more preferably 30% or more, and preferably 80% or less, more than the total length L2 of the middle-high portion 42.
  • it is 70% or less, preferably 20% or more and 80% or less, more preferably 30% or more and 70% 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.
  • the absorptive core 41 has the middle-high boundary groove part 43 which divides the boundary between the middle-high part 42 and parts other than the middle-high part 42 in the intermediate region 41M.
  • 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.
  • the front middle / high boundary groove 43a and the rear middle / high boundary groove 43c are formed 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • the front middle-high adjacent portion 44a is formed symmetrically with respect to the center line CL extending in the vertical direction X.
  • 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.
  • the rear middle high adjacent portion 44c is also formed symmetrically with respect to the center line CL extending in the vertical direction X, similarly to 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.
  • the middle-high adjacent portion 44 is formed so that the thickness is larger than the thickness of the middle-high boundary groove portion 43 and smaller than the thickness of the middle-high portion 42 in the absorbent core 41. . 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 thickness of the first region 41F and the thickness of 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.
  • the middle and high adjacent portions 44 are formed so that the basis weight 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. 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.
  • 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.
  • 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
  • the first region 41F and the second region 41R in the absorbent core 41 are each formed of a groove portion 45 having a relatively small basis weight and a small absorbent portion 46 having a relatively large basis weight, as shown in FIG. And have.
  • the groove 45 includes 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
  • 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.
  • the absorbent core 41 having the groove portion 45 and the small absorption portion 46 in the first region 41F and the second region 41R, and having the middle-high portion 42, the middle-high boundary groove portion 43, and the middle-high adjacent portion 44 in the intermediate region 41M, The whole 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.
  • 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.
  • a first air-impermeable member 57 for forming a middle-high boundary groove 43 that separates the middle-high portion 42 and the middle-high adjacent portion 44 is disposed on the bottom surface of the recess 56b.
  • 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.
  • 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 and the second breathable member 58 may be non-breathable members, and are made of, for example, metal, plastic, ceramic, or the like.
  • 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.
  • 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.
  • a conveying means such as a belt conveyor.
  • 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. .
  • the part accumulated in the recessed part 56b becomes the middle-high part 42 in which both basic weight and thickness are relatively large.
  • 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.
  • 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.
  • 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.
  • a fiber nonwoven fabric such as an air-through fiber nonwoven fabric, a spunbond nonwoven fabric, or a point bond nonwoven fabric is suitable.
  • the thermoplastic resin include, but are not limited to, olefin polymers such as ethylene and propylene, or polyethylene terephthalate.
  • 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.
  • seat 2 can use the thing similar to what was conventionally used in the said technical field without a restriction
  • the non-skin-side sheet 3 is made of a material having poor liquid permeability or impermeability and containing a thermoplastic synthetic resin.
  • 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-meltblown-spunbond laminated fiber nonwoven fabric, air-through fiber nonwoven fabric, point bond fiber nonwoven fabric, spunbond fiber nonwoven fabric, etc. can be used, but is not limited to these, The thing similar to what was conventionally used in the said technical field can be especially used without a restriction
  • 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 ⁇ m.
  • the core material of the absorbent core 41 includes a fiber assembly made of a fiber material such as pulp fiber.
  • a fiber material such as pulp fiber.
  • 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.
  • 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.
  • the fiber material is preferably 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.
  • 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.
  • Examples of the core wrap sheet (not shown) for covering 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.
  • 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.
  • a spunbond nonwoven fabric for example, 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, and the vertical pressing groove 73) is a pressing process (so-called embossing) with or without heat, or an embossing process such as ultrasonic embossing. Can be formed according to a conventional method.
  • the napkin 1 has a middle-high portion 42 in an intermediate region 41M of the absorbent core 41.
  • the middle-high portion 42 is a plan view of the absorbent core 41 as shown in FIG.
  • the absorbent core 41 has a maximum width portion in which the length in the lateral direction Y is the maximum, and the length of the maximum width portion in the lateral direction Y is the transverse direction Y of the intermediate region 41M of the absorbent core 41. It is the same as the length.
  • the maximum width portion has a middle-high central portion 421 formed to extend to a predetermined length in the longitudinal direction X along both side edges along the longitudinal direction X of the absorbent core 41. Therefore, it is possible to increase the amount of excreted fluid absorbed, and when the napkin 1 that is an absorbent article is worn in a slightly shifted state, the body movement during wearing, the body posture during sleeping, etc.
  • the middle-high part 42 is a front-side convex part that is convex toward the first region 41F side from the front end part in the longitudinal direction X of the middle-high center part 421 in plan view as shown in FIG. 422 and the rear side convex part 423 which protrudes toward the 2nd area
  • the middle-high part 42 has either the front convex part 422 or the rear convex part 423, the napkin 1 By deforming the front-side convex portion 422 and the rear-side convex portion 423 with respect to the force inward in the lateral direction Y, the middle-high portion 42 has excellent followability to the body shape, and it is difficult for the wearer to feel uncomfortable. . Moreover, even if the napkin 1 is worn in a slightly displaced state, if the middle-high portion 42 has either one of the front-side convex portion 422 and the rear-side convex portion 423, there is a gap between the wearer's skin.
  • the napkin 1 has a top portion in which the front-side convex portion 422 and the rear-side convex portion 423 in the absorbent core 41 are located in the center portion in the horizontal direction Y from both side portions along the vertical direction X.
  • the width d is formed so as to gradually decrease toward 422t and 423t. Therefore, even if the napkin 1 is worn in a slightly shifted state, the followability to the body shape is further improved, and it is difficult to give the wearer a sense of incongruity.
  • the napkin 1 has a middle-high portion 42 and a middle-high boundary groove portion 43 that defines a portion other than the middle-high portion 42 in the intermediate region 41 ⁇ / b> M of the absorbent core 41.
  • 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 41 ⁇ / b> F and the second region 41 ⁇ / b> R in the absorbent core 41. Therefore, it is easy to bend
  • the middle / high boundary groove 43 is formed over the entire length in the lateral direction Y of the absorbent core 41, the width-direction side edge of the absorbent core 41 also matches the body shape and movement of the wearer. This makes it easier to bend and further improve fit.
  • 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.
  • 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
  • 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.
  • 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.
  • the napkin 1 since the napkin 1 has the groove part 45 and the small absorption part 46 in the 1st area
  • the absorbent article of this invention is not restrict
  • 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.
  • 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.
  • the width d of the front-side convex portion 422 is gradually reduced, an example shown in FIGS. 6A to 6E will be described. The same applies to the rear convex portion 423.
  • the front convex portion 422 of the absorbent core 41 shown in FIG. 6A is formed in a curve having a constant curvature radius from the side edge 41s along the longitudinal direction X of the absorbent core 41 toward the top portion 422t. Yes.
  • the width d of the front side convex part 422 gradually decreases.
  • the side 422s bent on the way from the side edge 41s along the vertical direction X of the absorptive core 41 to the top part 422t. It is formed with a straight line.
  • the width d of the front side convex part 422 gradually decreases.
  • the front-side convex portion 422 of the absorbent core 41 shown in FIG. 6C has a plurality of curves with different curvature radii from the side edge 41s along the longitudinal direction X of the absorbent core 41 toward the top portion 422t. It is drawn and formed. Thus, since the convex shape is drawn toward the top portion 422t, the width d of the front side convex portion 422 gradually decreases.
  • the side edge 422s is straight to the middle from the side edge 41s along the vertical direction X of the absorptive core 41 to the top part 422t. It is formed by drawing a curve with a constant radius of curvature from the middle. Thus, since the convex shape is drawn toward the top part 422t, the width d of the front side convex part 422 gradually decreases.
  • the front convex portion 422 of the absorbent core 41 shown in FIG. 6 (e) is absorbed from the side edge 41 s along the longitudinal direction X of the absorbent core 41 toward the top portion 422 t as shown in FIG. 6 (d).
  • the side 422s is formed halfway along a curved line having a constant radius of curvature, and is formed from the middle with a straight line.
  • the width d of the front side convex part 422 gradually decreases.
  • only one front-side convex portion 422 of the napkin 1 is arranged at the front end portion of the middle-high center portion 421.
  • a plurality of the front end portions may be arranged.
  • 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
  • the whole absorptive core 41 of the napkin 1 is integrally molded, it does not need to be integrally molded.
  • 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 at The part 42 may be formed.
  • the absorptive core 41 of the napkin 1 may include a continuous layer that is not divided over the entire surface direction.
  • 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.
  • the napkin 1 has a pair of wing portions 1W and 1W on both the left and right sides along the longitudinal direction X of the excretion facing area B, but has a pair of wing portions 1W and 1W. It does not have to be. Moreover, in addition to a pair of wing parts 1W and 1W, you may have a pair of back flaps in the right-and-left both sides along the vertical direction X of the back area C.
  • the napkin 1 shown in FIG. 1 has a pair of vertical pressing groove
  • the vertical squeezing groove 73 is formed so as to longitudinally cut the middle / high part 42, the middle / high boundary groove part 43, and the middle / high adjacent part 44 in the absorbent core 41 in the longitudinal direction X from the viewpoint of preventing further leakage. .
  • the vertical pressing grooves 73A and 73A are more preferably arranged at the position of the intermediate region 41M in the vertical direction X from the viewpoint of twist prevention and fit.
  • the absorbent core 41 of the napkin 1 may have the groove 45 formed on the non-skin facing surface side. Thereby, liquid diffusibility and liquid retention are improved.
  • 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
  • the absorbent article of the present invention may be a sanitary napkin, a panty liner (cage sheet), an incontinence pad, or the like.
  • 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. Equipped with a thick middle and high part than the thickness in the two areas,
  • the middle-high portion has a maximum width portion in which the length in the lateral direction orthogonal to the longitudinal direction of the absorbent core is maximized in a plan view of the absorbent core, and the lateral direction at the maximum width portion
  • the absorbent article has the same length as the transverse length of the absorbent core.
  • the middle-high portion includes a middle-high center portion in which the maximum width portion is formed to extend to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core.
  • Absorbent article as described in 1.
  • the middle-high portion includes a front-side convex portion or a rear-side convex portion whose lateral length is narrower than the maximum width portion from the middle-high central portion toward the front side or the rear side, Absorbent article according to 2>.
  • the middle-high part is the absorbent article according to ⁇ 3>, wherein the front side convex part and the rear side convex part are included.
  • the front side convex portion is arranged at one front end portion in the vertical direction of the middle and high central portion, and the rear side convex portion is arranged at one rear end portion in the vertical direction of the middle and high central portion,
  • Each of the front-side convex portion and the rear-side convex portion is formed such that the lateral length gradually decreases from both side portions along the longitudinal direction toward the top portion located at the central portion in the lateral direction.
  • ⁇ 6> ⁇ 1> to ⁇ 5>, wherein the middle-high portion does not have a recess having a basis weight lower than the basis weight of the first region and the second region of the absorbent core on the skin contact surface side.
  • the middle-high portion is any one of ⁇ 1> to ⁇ 6>, wherein the basis weight of the first region and the basis weight of the second region in the absorbent core are higher than the basis weight.
  • 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 absorbent article according to any one of ⁇ 1> to ⁇ 7>, wherein the middle / high boundary groove is formed over the entire length in the lateral direction of the absorbent core.
  • the middle-high portion includes a middle-high central portion formed so that the maximum width portion extends to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core, Any one of the above ⁇ 1> to ⁇ 9>, wherein the middle-high central portion is formed so that its height decreases from a central portion in the horizontal direction toward both side portions along the vertical direction in a cross-sectional view.
  • the middle-high portion includes a middle-high central portion formed so that the maximum width portion extends to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core, Any one of the above ⁇ 1> to ⁇ 9>, wherein the middle-high central portion is formed so that its basis weight decreases from a central portion in the horizontal direction toward both side portions along the vertical direction in a cross-sectional view.
  • 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 middle region, and a middle-high boundary region in the middle region excluding the middle-high portion and the middle-high boundary groove portion.
  • a basis weight of the middle-high adjacent portion is smaller than a basis weight of the middle-high portion and larger than a basis weight of the middle-high boundary groove portion.
  • the middle-high adjacent portion is the absorbent article according to ⁇ 12>, wherein the basis weight is the same as or smaller than the basis weight of the first region and the second region in the absorbent core.
  • 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 middle region, and a middle-high boundary region in the middle region excluding the middle-high portion and the middle-high boundary groove portion.
  • a thickness of the middle-high adjacent portion is larger than a thickness of the middle-high boundary groove portion and smaller than a thickness of the middle-high boundary portion.
  • the middle-high adjacent portion is the absorbent article according to ⁇ 14>, wherein the thickness is the same as or smaller than the thickness of the first region and the second region in the absorbent core.
  • ⁇ 16> The absorbent article according to any one of ⁇ 1> to ⁇ 15>, wherein the absorbent core includes a continuous layer that is not divided over the entire surface direction.
  • ⁇ 17> The absorbent article according to any one of ⁇ 1> to ⁇ 16>, wherein a total length in the vertical direction of the middle and high portions is 25% or more and 80% or less of a total length in the vertical direction of the absorbent core.
  • ⁇ 18> The absorptivity according to any one of ⁇ 2> to ⁇ 5>, wherein an overall length in the middle direction of the middle-high portion is 20% to 80% of a longitudinal length of the middle-high portion. Goods.
  • 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 core has a medium-high boundary groove part that defines a boundary between the medium-high part and the other part, and has a medium-high adjacent part in a region excluding the medium-high part and the medium-high boundary groove part in the intermediate region
  • the absorbent article has a pair of vertical pressing grooves extending in the longitudinal direction of the absorbent core as a linear groove in which the skin side sheet and the absorbent core are integrated by pressing.
  • ⁇ 22> Grooves extending in the lateral direction are disposed in the first region and the second region of the absorbent core, and the basis weight of the grooves is absorbed from portions other than the groove portions in the first region and the second region.
  • ⁇ 23> Grooves extending in the longitudinal direction are disposed in the first region and the second region of the absorbent core, and the basis weight of the groove portions is absorbed by portions other than the groove portions in the first region and the second region.
  • the absorbent article includes a pair of wing portions on both lateral outer sides of the absorbent article, and the intermediate region exists between roots of the wing portions that are spaced apart in the vertical direction in each wing portion.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 26> wherein the length of the intermediate region of the absorbent article in the vertical direction is the same as the length between the roots of the wing portion.
  • ⁇ 28> The absorbent article according to any one of ⁇ 1> to ⁇ 27>, wherein the absorbent article has a rear flap portion at a lateral rear portion of the second region.
  • ⁇ 29> The absorbent article according to any one of ⁇ 1> to ⁇ 28>, further comprising a three-dimensional guard that can stand toward the wearer on both left and right sides along the front-rear direction of the absorbent article.
  • the absorbent article is a sanitary napkin having a total length of 30 cm or more.
  • 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 3.5 mm, and the thickness of the first region 41F and the thickness of the second region 41R were 2.3 mm.
  • the basis weight of the middle-high portion 42 was 350 g / m 2 , and the basis weight of the first region 41F and the basis weight of the second region 41R were 250 g / m 2 . Thickness and basic weight were measured by the method mentioned above. Further, the overall length L2 in the longitudinal direction X of the middle-high portion 42 was 63% of the overall length L1 in the longitudinal direction X of the absorbent core 41.
  • the absorbent core having the form shown in FIG. 9 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. The absorbent body and the skin side sheet, and the absorbent body and the non-skin side sheet were joined via an adhesive.
  • Skin-side sheet Air-through nonwoven fabric with basis weight of 30 g / m 2
  • Non-skin-side sheet Non-breathable polyethylene film sheet with basis weight of 25 g / m 2
  • 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 mid-high portion 42 ′ does not have the front convex portion 422 and the rear convex portion 423 compared to the absorbent core shown in FIG. 9. The only difference is that it has only the middle and high central part 421 '.
  • the thickness and basis weight of the middle-high portion 42 ′ were the same as those of the napkin of Example 1, and the thickness and basis weight of the first region 41F ′ and the second region 41R ′ were the same as those of the napkin of Example 1.
  • the overall length in the longitudinal direction X of the middle-high portion 42 ′ was 63% of the overall length in the longitudinal direction X of the absorbent core 41 ′.
  • a napkin of Comparative Example 2 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. 10 (b) has a middle / high part 421 ⁇ / b> X in which the middle / high part 42 ′ does not extend over the entire width of the absorbent core 41 compared to the absorbent core shown in FIG. 9. Is different.
  • the thickness and basis weight of the middle-high portion 42 ′ were the same as those of the napkin of Example 1, and the thickness and basis weight of the first region 41F ′ and the second region 41R ′ were the same as those of the napkin of Example 1. Further, the overall length in the longitudinal direction X of the middle-high portion 42 ′ was 63% of the overall length in the longitudinal direction X of the absorbent core 41 ′.
  • a napkin of Comparative Example 3 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. 10 (c) has a middle / high portion 421 X that does not cover the entire width of the absorbent core 41 compared to the absorbent core shown in FIG. 9. Is different. Further, the middle / high part 421X was formed in a cross shape.
  • the thickness and basis weight of the middle-high portion 42 ′ were the same as those of the napkin of Example 1, and the thickness and basis weight of the first region 41F ′ and the second region 41R ′ were the same as those of the napkin of Example 1. Further, the overall length in the longitudinal direction X of the middle-high portion 42 ′ was 63% of the overall length in the longitudinal direction X of the absorbent core 41 ′.
  • the rigidity of the napkin of Example 1 and the napkins of Comparative Examples 1 to 3 was evaluated by the following method. First, the prepared napkin of Example 1 and the napkins of Comparative Examples 1 to 3 were stored in a test room at a temperature of 23 ° C. and a humidity of 50% for 24 hours. Thereafter, a measurement sample was used, and the rigidity value was measured in accordance with the handle ohm method (JIS L-1096) under the same environmental conditions. As the handle ohmmeter, model number: HOM-200 manufactured by Daiei Kagaku Seiki Seisakusho was used.
  • the measurement sample was placed on the sample stage so that the non-skin side sheet side was directed downward and the vertical direction thereof was perpendicular to the slot having a width of 10 m.
  • the blade of the penetrator is lowered at a constant speed of 200 mm / min at a constant speed of 200 mm / min from a position 10 mm away from the front end side of the front section side of the middle high section toward the middle section, and a depth of 8 mm.
  • the maximum value indicated by the indicator (load meter) when pushing in was read.
  • the rigidity value of the napkin of Example 1 is smoothly increased in the region near the front end on the front area side of the middle and high parts as compared with the napkins of Comparative Examples 1 to 3. I understood it.
  • the napkin of Example 1 was not easily formed with a refracting part and deformed flexibly because there was no portion where the rigidity increased rapidly. If such a napkin of Example 1 is used, it is difficult to give the wearer a sense of incongruity by being excellent in conformity to the body shape even when 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.
  • the absorbent article even if the absorbent article is worn in a slightly displaced state, it is difficult to give the wearer a sense of incongruity by being excellent in conformity to the body shape, and it is difficult to create a gap between the skin of the wearer. Sufficient absorption performance can be expressed.

Abstract

This absorbent article (1) is provided with an absorbent core (41). The absorbent core (41) has a convex portion (42) in an excretion facing section (B). The convex portion (42) is thicker than a first region (41F) and a second region (41R) of the absorbent core (41). The convex portion (42) has a maximum width portion in which the absorbent core (41) has a maximum length in a transverse direction (Y) perpendicular to a longitudinal direction (X) in a plane view. The length in the transverse direction (Y) of the maximum width portion is the same as the maximum length in the transverse direction (Y) of an intermediate region (41M) of the absorbent core (41).

Description

吸収性物品Absorbent articles
 本発明は、生理用ナプキン、失禁パッド等の吸収性物品に関する。 The present invention relates to absorbent articles such as sanitary napkins and incontinence pads.
 従来、生理用ナプキン等の吸収性物品においては、排せつ液量が多い場合などでは、日常の生活行動の中においても液漏れに繋がる場合があった。そのため、本出願人は、吸収性物品の吸収性コアにおいて、着用者の液排泄部に対向配置される排泄対向区域に坪量の大きい中高部分を設けたり、さらに中高部分に坪量の低い横溝を設けることにより液を排泄ポイントに滞留させずに拡散させることで、液漏れを防ぐ方法を提案した(例えば特許文献1~特許文献2)。 Conventionally, in an absorbent article such as a sanitary napkin, when there is a large amount of excreted liquid, it may lead to liquid leakage even in daily living activities. For this reason, the applicant of the present invention provides an absorbent core of the absorbent article in which a middle and high portion having a large basis weight is provided in an excretion-facing area disposed opposite to the liquid excretion portion of the wearer, or a lateral groove having a low basis weight in the middle and high portion. Proposed a method for preventing liquid leakage by diffusing the liquid without staying at the excretion point by providing (for example, Patent Documents 1 to 2).
 例えば、特許文献1では、着用者の肌側に向けられる面に、肌側に向かって隆起する中高部を有する表面構造体を備え、中高部の全周に亘って凹部を備える技術を提案した。特許文献1に記載の吸収性物品によれば、フィット性及び吸収性に優れ且つ液漏れを防止することができる。 For example, Patent Document 1 proposes a technique that includes a surface structure having a middle-high portion that protrudes toward the skin side on a surface directed toward the skin side of the wearer, and a concave portion over the entire circumference of the middle-high portion. . According to the absorptive article given in patent documents 1, it is excellent in fit nature and absorptivity, and can prevent a liquid leak.
 また、特許文献2では、中高領域及び溝部が一体成形により形成されており、該溝部によってブロック状に区画された吸収部を複数有する吸収性コアを備える吸収性物品を提案した。特許文献2に記載の吸収性物品によれば、吸収性コアの折れに起因する違和感が少なく、また、吸収した液の液戻りも生じ難くなり、液漏れを防止することができる。 Further, in Patent Document 2, an absorbent article including an absorbent core having a plurality of absorbing portions partitioned into a block shape by the groove portions in which the middle and high regions and the groove portions are integrally formed is proposed. According to the absorbent article described in Patent Document 2, there is little discomfort due to the breakage of the absorbent core, and liquid return of the absorbed liquid is less likely to occur, thereby preventing liquid leakage.
特開平11-33054号公報JP-A-11-33054 特開2014-104093号公報JP 2014-104093 A
 本発明は、着用者の前後方向に対応する縦方向に長い形状の吸収性コアを備え、前方区域及び後方区域を有する吸収性物品に関する。前記吸収性コアは、前記前方側に位置する第一領域及び前記後方側に位置する第二領域との間に中間領域を有し、該中間領域には、該第一領域及び該第二領域における厚みよりも、厚みの厚い中高部を備えている。前記中高部は、前記吸収性コアを平面視して、該吸収性コアの前記縦方向と直交する横方向における長さが最大となる最大幅部を有し、該最大幅部の横方向の長さが、前記吸収性コアの横方向の長さと同じである。 The present invention relates to an absorbent article having a longitudinally long absorbent core corresponding to a wearer's longitudinal direction and having a front area and a rear area. The absorbent core has an intermediate region between a first region located on the front side and a second region located on the rear side, and the intermediate region includes the first region and the second region. It is provided with a middle-high portion having a greater thickness than the thickness in FIG. The middle-high portion has a maximum width portion in which the length in the lateral direction orthogonal to the longitudinal direction of the absorbent core is maximized in a plan view of the absorbent core. The length is the same as the lateral length of the absorbent core.
図1は、本発明の吸収性物品の好ましい一実施形態である生理用ナプキンの肌対向面側(肌側シート側)を示す平面図である。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. 図2は、図1に示す生理用ナプキンの有する吸収性コアにおける肌対向面側の平面図である。FIG. 2 is a plan view of the skin facing surface side of the absorbent core of the sanitary napkin shown in FIG. 図3は、図2のIII-III線断面を模式的に示す断面図である。3 is a cross-sectional view schematically showing a cross section taken along line III-III in FIG. 図4は、図2のIV-IV線断面を模式的に示す断面図である。4 is a cross-sectional view schematically showing a cross section taken along line IV-IV in FIG. 図5(a)ないし図5(b)は、図1に示す生理用ナプキンの備える吸収性コアの製造工程を説明する説明図である。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. 図6(a)ないし図6(f)は、本発明の吸収性物品の好ましい他の実施形態である生理用ナプキンの備える吸収性コアの一部における肌対向面側の平面図である。Fig.6 (a) thru | or FIG.6 (f) is a top view by the side of the skin opposing surface in a part of absorptive core with which the sanitary napkin which is other preferable embodiment of the absorbent article of this invention is provided. 図7は、本発明の吸収性物品の好ましい他の実施形態である生理用ナプキンの肌対向面側(肌側シート側)を示す平面図である。FIG. 7: is a top view which shows the skin opposing surface side (skin side sheet | seat side) of the sanitary napkin which is preferable other embodiment of the absorbent article of this invention. 図8は、本発明の吸収性物品の好ましい別の実施形態である生理用ナプキンの肌対向面側(肌側シート側)を示す平面図である。FIG. 8: is a top view which shows the skin opposing surface side (skin side sheet | seat side) of the sanitary napkin which is another preferable embodiment of the absorbent article of this invention. 図9は、実施例1のナプキンの有する吸収性コアにおける肌対向面側の平面図である。9 is a plan view of the skin facing surface side of the absorbent core included in the napkin of Example 1. FIG. 図10(a)は比較例1のナプキンの有する吸収性コアにおける肌対向面側の平面図であり、図10(b)は比較例2のナプキンの有する吸収性コアにおける肌対向面側の平面図であり、図10(c)は比較例3のナプキンの有する吸収性コアにおける肌対向面側の平面図である。10 (a) is a plan view of the skin facing surface side of the absorbent core of the napkin of Comparative Example 1, and FIG. 10 (b) is a plane of the skin facing surface side of the absorbent core of the napkin of Comparative Example 2. FIG. 10C is a plan view of the skin facing surface side of the absorbent core of the napkin of Comparative Example 3. 図11は、実施例1のナプキン及び比較例1~3のナプキンの剛性値を測定した結果を示すグラフである。FIG. 11 is a graph showing the results of measuring the rigidity values of the napkin of Example 1 and the napkins of Comparative Examples 1 to 3.
発明の詳細な説明Detailed Description of the Invention
 特許文献1に記載の吸収性物品においても、特許文献2に記載の吸収性物品においても、着用の際に吸収性物品を身体の適正な位置に着用できなければ、身体の前後方向や左右の幅方向に着用位置ズレが発生する場合があり、特許文献1に記載の吸収性物品及び特許文献2に記載の吸収性物品の効果を十分に得られない場合があった。このように特許文献1に記載の吸収性物品及び特許文献2に記載の吸収性物品には、更なる改良の余地があった。 In both the absorbent article described in Patent Document 1 and the absorbent article described in Patent Document 2, if the absorbent article cannot be worn at an appropriate position when worn, Wear position shift may occur in the width direction, and the effects of the absorbent article described in Patent Document 1 and the absorbent article described in Patent Document 2 may not be sufficiently obtained. As described above, the absorbent article described in Patent Document 1 and the absorbent article described in Patent Document 2 have room for further improvement.
 したがって本発明の課題は、前述した従来技術が有する欠点を解消し得る吸収性物品を提供することにある。 Therefore, an object of the present invention is to provide an absorbent article that can eliminate the above-mentioned drawbacks of the prior art.
 以下、本発明の吸収性物品を、その好ましい一実施形態である生理用ナプキン1(以下、「ナプキン1」とも言う。)に基づき図面を参照して説明する。図1には、本実施形態のナプキン1を肌側シート側から視た平面図が示されている。本実施形態のナプキン1は、図1に示すように、縦方向Xに長い形状の吸収性コア41を備え、前方区域A及び後方区域Cを有する。ナプキン1は、図1に示すように、着用者の液排泄部に対向配置される排泄対向区域Bと、該排泄対向区域Bの縦方向Xの前後に配置された前方区域A及び後方区域Cとに区分されている。 Hereinafter, the 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 shape that is long in the longitudinal direction X, and includes 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.
 本明細書において、縦方向Xは、着用者の前後方向に対応しており、吸収性物品(ナプキン1)の長手方向に一致し、横方向Yは、吸収性物品(ナプキン1)の幅方向(長手方向に直交する方向)に一致している。したがって、特段の断りがない場合には、本明細書において、長手方向Xの長さは、長手方向Xで測定される距離である「長さ」を意味し、横方向Yの長さは、横方向Yで測定される距離である「幅」を意味する。ナプキン1は、縦方向Xに延びる中心線CLに対して左右対称に形成されている。縦方向Xとは、中心線CLに平行な方向でもある。また、本明細書において、肌対向面は、吸収性物品(ナプキン1)又はその構成部材における、吸収性物品(ナプキン1)の着用時に着用者の肌側に向けられる面であり、非肌対向面は、吸収性物品(ナプキン1)又はその構成部材における、吸収性物品(ナプキン1)の着用時に肌側とは反対側(着衣側)に向けられる面である。 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 X means “length” which is a distance measured in the longitudinal direction X, and the length in the lateral direction Y is It means “width” which is a distance measured in the horizontal 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. Further, in the present specification, the skin facing surface is a surface directed toward the wearer's skin when the absorbent article (napkin 1) is worn in the absorbent article (napkin 1) or a component thereof, and is non-skin facing A surface is a surface in the absorbent article (napkin 1) or a component thereof directed to the side opposite to the skin side (clothing side) when the absorbent article (napkin 1) is worn.
 ナプキン1は、着用時に着用者の液排泄部(膣口等)に対向配置される排泄対向区域Bと、該排泄対向区域Bよりも着用者の腹側(前側)寄りに配される前方区域Aと、該排泄対向区域Bよりも着用者の背側(後側)寄りに配される後方区域Cとを有している。即ち、ナプキン1は、縦方向Xに、前方区域A、排泄対向区域B及び後方区域Cの順番で区分される。 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.
 尚、本発明の吸収性物品において、排泄対向区域Bとは、本実施形態のナプキン1のようにウイング部1Wを有する場合には、縦方向Xにおいてウイング部1Wを有する領域(一方のウイング部1Wの縦方向Xに沿う付け根と他方のウイング部1Wの縦方向Xに沿う付け根とに挟まれた領域)を意味する。また、ウイング部を有しない吸収性物品の場合には、吸収性物品が3つ折りの個装形態に折り畳まれた際に生じる、該吸収性物品を横方向Yに横断する2本の折曲線(図示せず)について、該吸収性物品の縦方向Xの前端から数えて第1折曲線と第2折曲線とに囲まれた領域を意味する。 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.
 本実施形態のナプキン1は、図1に示すように、肌対向面を形成する液透過性の肌側シート2、非肌対向面を形成する非肌側シート3、及びこれら両シート2,3間に介在された吸収体4を具備している。吸収体4は、吸収性コア41と、該吸収性コア41を包むコアラップシート(不図示)とから構成されている。 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.
 ナプキン1では、肌側シート2は、図1に示すように、吸収体4の肌対向面の全域を被覆し、吸収体4の縦方向Xに沿う両側縁から横方向Yの外方に延出している。一方、非肌側シート3は、吸収体4の非肌対向面の全域を被覆し、更に肌側シート2の縦方向Xに沿う両側縁から横方向Yの外方に延出して、後述するサイドシート5と共にサイドフラップ部1Sを形成している。非肌側シート3とサイドシート5とは、吸収体4の縦方向Xに沿う両側縁からの延出部において、接着剤、ヒートシール、超音波シール等の公知の接合手段によって互いに接合されている。尚、肌側シート2及び非肌側シート3それぞれと吸収体4との間は接着剤によって接合されていてもよい。 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.
 ナプキン1では、サイドシート5は、図1に示すように、肌側シート2の肌対向面における縦方向Xに沿う両側部に配されている。好適には、サイドシート5は、平面視において肌側シート2の縦方向Xに沿う左右両側部に重なるように、肌側シート2の縦方向Xの全長に亘って配されている。 In the napkin 1, the side sheets 5 are arranged on both side portions along the vertical direction X on the skin facing surface of the skin side sheet 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.
 ナプキン1では、一対のサイドシート5,5は、それぞれ、図1に示すように、接合部6にて肌側シート2に接合されている。曲線による横方向Yへの凹凸を交互に縦方向Xに連続して配した波状の接合部6は、平面視において、中心線CLを中心として横方向Yに対称に一対配されている。このように、サイドシート5が、波状の接合部6にて肌側シート2に接合されて固定されると、波状に配された接合部6の接合部群よりも横方向Yの内方に、サイドシート5と肌側シート2とで画成される空間部が形成される。この空間部は、中心線CLに向けて開口しているので、横方向Yの中央から外方へ流れる経血等の体液が該空間部に収容されるようになり、結果として体液の漏れが効果的に防止できる。 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.
 ナプキン1では、サイドフラップ部1Sは、図1に示すように、排泄対向区域Bにおいて横方向Yの外方に向かって大きく張り出しており、これによりナプキン1の縦方向Xに沿う左右両側に、一対のウイング部1W,1Wが延設されている。ウイング部1Wは、ショーツ等の着衣のクロッチ部の非肌対向面側に折り返されて用いられるものである。また、肌側シート2及び非肌側シート3は、図1に示すように、吸収体4の縦方向Xの前端及び後端それぞれから縦方向Xの外方に延出し、それらの延出部において、接着剤、ヒートシール、超音波シール等の公知の接合手段によって、互いに接合されてエンドシール部を形成している。 In the napkin 1, as shown in FIG. 1, the side flap portions 1S project greatly outward in the lateral direction Y in the excretion facing area B, and thereby on the left and right sides along the vertical direction X of the napkin 1, A pair of wing portions 1W, 1W are extended. 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.
 ナプキン1では、図1に示すように、肌側シート2の肌対向面に、肌側シート2及び吸収体4が非肌側シート3側に向かって一体的に凹陥してなる線状圧搾溝7が形成されている。線状圧搾溝7における「線状」とは、溝(凹陥部)の形状が平面視において直線に限られず、曲線を含んでいることを意味する。尚、各線は、連続線でも破線でもよく、ナプキン1の線状圧搾溝7は、不連続な多数の点エンボスのなす列から構成されている。線状圧搾溝7は、肌側シート2及び吸収体4に関して、構成部材である各々の繊維の密度が、該線状圧搾溝7の周囲部の密度よりも高くなっている。線状圧搾溝7は、吸収体4の前方区域A及び後方区域Cに、それぞれ横方向Yに延びる第1横圧搾溝71と、吸収体4の排泄対向区域Bの縦方向Xに沿う両側部に縦方向Xに延びる縦圧搾溝73とを有している。ナプキン1では、第1横圧搾溝71は、縦方向X外方に向けて凸の曲線状であり、縦圧搾溝73は、排泄対向区域Bにおいて横方向Y外方に向けて凸の曲線状である。第1横圧搾溝71は、一対の縦圧搾溝73よりも内側に、一対の縦圧搾溝73に亘って横方向Yに延びている。ナプキン1では、前方区域Aの第1横圧搾溝71、一方の縦圧搾溝73、後方区域Cの第1横圧搾溝71、及び他方の縦圧搾溝73が繋がってリング状の全周溝を形成している。このように形成された線状圧搾溝7は、吸収体4の平面方向への体液の拡散を抑制して、ナプキン1の周囲から液漏れを効果的に防止することができる。 In the napkin 1, as shown in FIG. 1, a linear compressed groove in which the skin side sheet 2 and the absorbent body 4 are integrally recessed toward the non-skin side sheet 3 side on the skin facing surface of the skin side sheet 2. 7 is formed. “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, each line may be a continuous line or a broken line, and the linear pressing groove 7 of the napkin 1 is comprised from the row | line | column which many discontinuous point embosses make. 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. The linear squeezing groove 7 has a first lateral squeezing groove 71 extending in the transverse direction Y in each of the front area A and the rear area C of the absorbent body 4 and both side portions along the longitudinal direction X of the excretion facing area B of the absorbent body 4. And a vertical pressing groove 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.
 ナプキン1では、吸収体4を構成する吸収性コア41は、図2に示すように、縦方向Xの前方区域A側に位置する第一領域41F及び後方区域C側に位置する第二領域41Rとの間に中間領域41Mを有している。中間領域41Mは中高部42を備えている。ナプキン1では、中間領域41Mは、排泄対向区域Bに配置されている。より具体的には、ナプキン1では、吸収性コア41の中間領域41Mと排泄対向区域Bは、縦方向において一致している。したがって、ナプキン1では、吸収性コア41における中間領域41Mに中高部42を有している。尚、ナプキン1では、図2に示すように平面視して、ナプキン1の前方区域Aの大きさと吸収性コア41の第一領域41Fの大きさとが略一致しており、ナプキン1の後方区域Cの大きさと吸収性コア41の第二領域41Rの大きさとが略一致している。 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. An intermediate region 41M is provided between the two. The intermediate region 41M includes a middle-high portion 42. In the napkin 1, the intermediate area 41M is disposed in the excretion facing area B. More specifically, 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 intermediate region 41 </ b> M of the absorbent core 41. 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.
 ナプキン1が、横方向Y両外側に一対のウイング部1Wを備える場合には、各ウイング部1Wにおける縦方向Xに間隔を空けて配されたウイング部1Wの付け根どうし間に中間領域41Mが存在している。より具体的には、ナプキン1の中間領域41Mは、各ウイング部1Wにおける縦方向Xに間隔を空けて配されたウイング部1Wの付根どうし間に亘って存在している。尚、ナプキン1の前方区域Aの大きさと吸収性コア41の第一領域41Fの大きさとが略一致しており、ナプキン1の後方区域Cの大きさと吸収性コア41の第二領域41Rの大きさとが略一致している場合には、ナプキン1の中間領域41Mの縦方向Xの長さは、各ウイング部1Wにおける縦方向Xに間隔を空けて配されたウイング部1Wの付根どうし間の長さと同一である。 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. is 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.
 また、中間領域41Mは、中間領域41Mの前方に位置する第一領域41F及び中間領域41Mの後方に位置する第二領域41Rの各領域における吸収性コア41の厚みよりも厚みが厚くなっている。ナプキン1では、吸収性コア41は、ナプキン1の縦方向Xと同方向に長い形状を有する。したがって、吸収性コア41の縦方向は、ナプキン1の縦方向Xと同方向であり、吸収性コア41の横方向は、ナプキン1の横方向Yと同方向である。 Further, the intermediate region 41M is thicker than the thickness of the absorbent core 41 in each region of the first region 41F located in front of the intermediate region 41M and the second region 41R located behind the intermediate region 41M. . 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.
 中高部42の厚みは、図4に示すように、吸収性コア41における第一領域41Fの厚み及び第二領域41Rの厚みよりも厚く形成されている。好適に、ナプキン1では、中高部42は、吸収性コア41における第一領域41Fの厚みよりも厚みが厚く形成されており、且つ、吸収性コア41における第一領域41Fの坪量よりも坪量が高く形成されている。また、好適には、ナプキン1では、中高部42の厚みは、吸収性コア41における第二領域41Rの厚みよりも厚みが厚く形成されており、且つ、吸収性コア41における第二領域41Rの坪量よりも坪量が高く形成されている。中高部42の厚み及び坪量と比較する第一領域41F及び第二領域41Rのそれぞれの厚み及び坪量は、第一領域41F及び第二領域41Rに溝部45が形成されている場合には、第一領域41F及び第二領域41Rにおける後述する溝部45が存在しない部分における厚み及び坪量を意味する。ナプキン1の吸収性コア41は、コア材料の坪量に差を設けて厚み差を設けてあるため、坪量の均一な吸収性コアの一部を圧縮して厚み差を設ける場合とは異なり、吸収性コア41は、全体として柔軟である。 As shown in FIG. 4, the thickness of the middle-high portion 42 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. Preferably, in the napkin 1, the middle-high portion 42 is formed to have a thickness larger than the thickness of the first region 41F in the absorbent core 41, and more than the basis weight of the first region 41F in the absorbent core 41. The amount is formed high. Further, preferably, in the napkin 1, the thickness of the middle-high portion 42 is formed to be thicker than the thickness of the second region 41 </ b> R in the absorbent core 41, and the second region 41 </ b> R in the absorbent core 41 is formed. The basis weight is higher than the basis weight. When the groove 45 is formed in the first region 41F and the second region 41R, the thickness and the basis weight of each of the first region 41F and the second region 41R to be compared with the thickness and the basis weight of the middle and high part 42, The thickness and basic weight in the part in which the groove part 45 mentioned later in the 1st area | region 41F and the 2nd area | region 41R does not exist are meant. 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.
 中高部42の厚みは、中高部42を肌に向かって突出させて、吸収性コア41の液の吸収性等を向上させる観点から、吸収性コア41における第一領域41F及び第二領域41Rの厚みの、好ましくは120%(即ち、1.2倍)以上、より好ましくは140%以上であり、また、好ましくは、700%以下、より好ましくは、500%以下であり、また、着用時における身体への追従性や違和感を抑える観点から、好ましくは120%以上700%以下、より好ましくは140%以上500%以下である。また、中高部42の厚みと第一領域41F又は第二領域41Rの厚みとの厚みの差(前者-後者)は、好ましくは1.0mm以上、より好ましくは2.0mm以上であり、また、好ましくは8.0mm以下、より好ましくは6.0mm以下であり、また、好ましくは1.0mm以上8.0mm以下、より好ましくは2.0mm以上6.0mm以下である。上述した構成は、本実施形態のナプキン1のように中高部42が排泄対向区域Bに設けられているときに、特に有効である。
 また、中高部42の厚みは、好ましくは2.0mm以上、より好ましくは3.0mm以上であり、また、好ましくは10.0mm以下、より好ましくは7.0mm以下であり、また、好ましくは2.0mm以上10.0mm以下、より好ましくは3.0mm以上7.0mm以下である。なお、中高部42の全範囲において上記厚みの関係になっていることが好ましいが、中高部42の厚み方向に増減が設けられているような場合においては、最も厚い部分において上記の関係となっていればよい。
 なお、中高部42の全範囲において上記厚みの関係になっていることが好ましいが、中高部42の厚み方向において、横方向Y又は縦方向X又は、その両方向に漸次的な厚み増減が設けられているような場合においては、最も厚い部分において上記の関係となっていればよい。
 また、第一領域41F又は第二領域41Rの厚みは、好ましくは0.5mm以上、より好ましくは1.0mm以上であり、また、好ましくは7.0mm以下、より好ましくは3.5mm以下であり、また、好ましくは0.5mm以上7.0mm以下、より好ましくは1.0mm以上3.5mm以下である
 ナプキン1では、第一領域41F又は第二領域41Rの厚みは、後述する溝部45が存在しない部分において、略均一に形成されていることが好ましいが、第一領域41F又は第二領域41Rの横方向Y又は縦方向Xに漸次的な厚みの増減が設けられているような場合においては、最も厚い部分において上記の関係となっていればよい。
 中高部42、第一領域41F又は第二領域41R、後述する中高隣接部44等の吸収性コア41の各部の厚みは、以下の方法によって測定される。
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%. 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.
Further, 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 2 It is 0.0 mm or more and 10.0 mm or less, More preferably, it is 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.
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. In the napkin 1, which 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, the thickness of the first region 41F or the second region 41R includes a groove 45 described later. It is preferable that the portion not formed is formed substantially uniformly, but in the case where a gradual increase or decrease in thickness is provided in the horizontal direction Y or the vertical direction X of the first region 41F or the second region 41R. It is sufficient that the above relationship is satisfied in the thickest part.
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.
<吸収性コア41の各部の厚みの測定方法>
 吸収性コアを水平な場所にシワや折れ曲がりがないように静置し、該吸収性コア41から測定対象物である中高部42、第一領域41F又は第二領域41R等を切り出す。そして、切り出した測定対象物における5cN/cm2の荷重下での厚みを測定する。具体的には、厚みの測定に、例えば、厚み計 PEACOCK DIAL UPRIGHT GAUGES R5-C(OZAKI MFG.CO.LTD.製)を用いる。このとき、厚み計の先端部と切り出した測定対象物との間に、荷重が5cN/cm2となるように大きさを調整した平面視円形状又は正方形状のプレート(厚さ5mm程度のアクリル板)を配置して、厚みを測定する。吸収性コア41における第一領域41F又は第二領域41R等の厚みを測定する際には、後述する溝部45を含まないように測定する。
<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.
 ナプキン1では、吸収性コア41における中高部42の坪量は、中高部42を肌に向かって突出させ、排泄対向区域Bにおける吸収性コアの液の吸収性等を向上させる観点から、好ましくは100g/m2以上、より好ましくは200g/m2以上であり、そして、好ましくは1500g/m2以下、より好ましくは1200g/m2以下であり、具体的には、好ましくは100g/m2以上1500g/m2以下、より好ましくは200g/m2以上1200g/m2以下である。また、吸収性コア41における第一領域41Fの坪量又は第二領域41Rの坪量は、好ましくは50g/m2以上、より好ましくは100g/m2以上であり、そして、好ましくは1000g/m2以下、より好ましくは900g/m2以下であり、具体的には、好ましくは50g/m2以上1000g/m2以下、より好ましくは100g/m2以上900g/m2以下である。第一領域41Fの坪量又は第二領域41Rの坪量は、上述した吸収性コア41の各部の厚みの測定方法で説明したように切り出した第一領域41F又は第二領域41Rのサンプルの質量を、そのサンプルの肌対向面側の面の面積で除して求める。吸収性コア41における第一領域41Fの坪量又は第二領域41R等の坪量を測定する際には、後述する溝部45を含まないように測定する。 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 first region 41F or the basic weight of the second region 41R in the absorbent core 41, the measurement is performed so as not to include a groove 45 described later.
 ナプキン1において、中高部42は、吸収性コア41を平面視して、吸収性コア41の縦方向Xと直交する横方向Yにおける長さが最大となる最大幅部を有し、該最大幅部の横方向Yの長さが、吸収性コア41の横方向Yの長さと同じである。好適には、中高部42は、図2に示すように吸収性コア41を平面視して、中高部42の最大幅部が吸収性コア41の縦方向Xに沿う両側縁に従って縦方向Xに所定の長さに延在して形成される中高中央部421を有している。言い換えれば、中高中央部421は、吸収性コア41の縦方向Xに沿う両側縁41s,41s間に亘って帯状に延在しており、帯状の中高中央部421における縦方向Xの全長に亘って中高部42の前記最大幅部を有している。中高中央部421の最大幅部の横方向Yの長さは、吸収性コア41の幅と同一となっている。なお、ここで吸収性コア41の幅とは、中高部42を含めた吸収性コア41の幅を意味する。すなわち、中高部42を横方向Yに断面視したとき、隣接する第一領域41F及び第二領域41Rの肌当接面側の表面の高さ位置よりも、肌当接面側に位置する中高部42の幅(肌側幅)が、非肌当接面側に位置する中高部42の幅(非肌側幅)と同じ又は大きければ、中高部42の最大幅は吸収性コア41の幅と同一である。しかしながら、中高部42の最大幅部は肌側幅と非肌側幅が略同一であることが望ましく、特に厚み方向に略均一であることが望ましい。吸収性コア41は、吸収性物品が多少ズレた状態で着用されても、十分な吸収性能が発現できるように、中高中央部421の面積をできるかぎり広くすることが好ましい。このような観点から、中高中央部421は、最大幅部において、吸収性コア41の縦方向Xに沿う両側縁41s,41s間は、一定の間隔であることが好ましく、両側縁41s,41sはそれぞれ、縦方向Xに平行であり、且つ直線状となっていることがより好ましい。ただし、製造時における、吸収性コア41における中高部42の横方向Yの位置ズレ、中高部42の欠け、生産方法に起因する型の抜き傾斜、端部の丸めや面取り等により、中高部42の幅と吸収性コア41の幅とが多少異なる程度、例えば、最大幅部の幅の5%程度の差の範囲であれば同一の幅とする。最大幅とは横方向Yにおける最も長い位置での距離を意味する。なお、図2においては、中高部42の横方向Yにおける最大幅部での横方向Yの長さが、吸収性コア41の中間領域41Mにおける横方向Yの最大長さと同じであり、吸収性コア41の横方向Yの最大長さと同じである。 In the napkin 1, the middle-high portion 42 has a maximum width portion in which the length in the horizontal direction Y orthogonal to the longitudinal direction X of the absorbent core 41 is maximized when the absorbent core 41 is viewed in plan view. The length in the horizontal direction Y of the part is the same as the length in the horizontal direction Y of the absorbent core 41. Preferably, as shown in FIG. 2, the middle-high portion 42 has a plan view of the absorbent core 41, and the maximum width portion of the middle-high portion 42 extends in the longitudinal direction X according to both side edges along the longitudinal direction X of the absorbent core 41. It has a middle-high central portion 421 formed to extend to a predetermined length. In other words, the middle-high center portion 421 extends in a band shape between both side edges 41s, 41s along the longitudinal direction X of the absorbent core 41, and extends over the entire length of the belt-shaped middle-high center portion 421 in the longitudinal direction X. And has the maximum width portion of the middle-high portion 42. The length in the lateral direction Y of the maximum width portion of the middle-high central portion 421 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. That is, when the middle-high portion 42 is viewed in a cross-section in the lateral direction Y, the middle-high position located on the skin contact surface side rather than the height position of the surface on the skin contact surface side of the adjacent first region 41F and second region 41R. If the width of the part 42 (skin side width) is the same as or larger than the width of the middle high part 42 (non-skin side width) located on the non-skin contact surface side, the maximum width of the middle high part 42 is the width of the absorbent core 41. Is the same. However, it is desirable that the maximum width portion of the middle-high portion 42 has substantially the same skin-side width and non-skin-side width, and particularly preferably substantially uniform in the thickness direction. In the absorbent core 41, it is preferable to make the area of the middle and high central portion 421 as wide as possible so that sufficient absorbent performance can be exhibited even if the absorbent article is worn with the absorbent article slightly shifted. From such a viewpoint, it is preferable that the middle and high central portion 421 has a constant interval between the side edges 41s and 41s along the longitudinal direction X of the absorbent core 41 in the maximum width portion. It is more preferable that each of them is parallel to the longitudinal direction X and is linear. 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. And the width of the absorbent core 41 are slightly different, for example, within the range of a difference of about 5% of the width of the maximum width portion, the same width is used. The maximum width means the distance at the longest position in the lateral direction Y. In FIG. 2, the length in the lateral direction Y at the maximum width portion in the lateral direction Y of the middle-high portion 42 is the same as the maximum length in the lateral direction Y in the intermediate region 41 </ b> M of the absorbent core 41. This is the same as the maximum length of the core 41 in the lateral direction Y.
 中高部42の中高中央部421は、ナプキン1では、図3に示すように断面視して、横方向Yの中央部から縦方向Xに沿う両側縁部に向かって、その高さが低くなるように形成されている。即ち、中高中央部421における縦方向Xに延びる中心線CL上に配された中央部が、最も高さが高く形成されている。このように中高中央部421が形成されていると、排泄対向区域Bにおける液の吸収性等を向上させることができる。 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. 3. 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.
 中高部42の中高中央部421は、ナプキン1では、図3に示すように断面視して、横方向Yの中央部から縦方向Xに沿う両側縁部に向かって、その坪量が小さくなるように形成されている。即ち、中高中央部421における縦方向Xに延びる中心線CL上に配された中央部が、最も坪量が大きく形成されている。このように中高中央部421が形成されていると、排泄対向区域Bにおける液の吸収性等を向上させることができる。 In the napkin 1, the middle-high center portion 421 has a smaller basis weight from the center portion in the lateral direction Y toward the side edge portions in 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 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.
 ナプキン1の中高中央部421は、図3に示すように断面視して、中心線CL上に配された中央部の高さ(T1)の、最も高さの小さい側縁41sでの高さ(T2)に対する比(T1/T2)は、排泄部に中高部が可能な限り隙間なく密着できる観点から、1.1以上、特に1.3以上であることが好ましく、また、着用時の違和感を与え難くする観点から、4以下、特に3以下であることが好ましく、具体的には、1.1以上4以下、特に1.3以上3以下であることが好ましい。
 また、中高部42は、肌当接面側に、吸収性コア41における第一領域41F及び第二領域41Rの坪量よりも坪量が低い凹部を有さない形態となっている。ここで、第一領域41F及び第二領域41Rの坪量とは、第一領域41F及び第二領域41Rが溝部45を有する場合には、溝部45を除いた部分の坪量を意味する。中高部42の肌当接面側に、低坪量の凹部が存在すると、ナプキン1に思わぬシワや折れが生じ易くなる。仮に、低坪量の凹部が、中高部42の肌当接面に縦方向Xに中高部42を縦断する縦溝部である場合、中高部42が該縦溝により幅方向に分断されるようになり易く、着用時に縦溝部を起点にナプキン1に縦方向に沿うシワが入り易くなるだけでなく、その縦溝部を基点に、ナプキン1の着用者の動作によって吸収性コアが分断されることも起こり得ると想定される。このように吸収性コアが分断されると、ナプキン1と身体との間に隙間ができやすくなったり、吸収容量が著しく低下したりするため、いわゆる液漏れの原因となる。
The middle-high center portion 421 of the napkin 1 is a 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, the middle-high part 42 becomes a form which does not have a recessed part with a basis weight lower than the basis weight of the 1st area | region 41F and the 2nd area | region 41R in the absorptive core 41 in the skin contact surface side. 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. If a concave portion having a low basis weight is present on the skin contact surface side of the middle and high portions 42, unexpected wrinkles and folds are likely to occur in the napkin 1. If the low basis weight concave portion is a vertical groove portion that vertically cuts the middle high portion 42 in the vertical direction X on the skin contact surface of the middle high portion 42, the middle high portion 42 is divided in the width direction by the vertical groove. It is easy to become wrinkled along the vertical direction on the napkin 1 starting from the longitudinal groove when worn, and the absorbent core may be divided by the movement of the wearer of the napkin 1 based on the longitudinal groove. It is assumed that this can happen. When the absorbent core is divided in this manner, a gap is easily formed between the napkin 1 and the body, or the absorption capacity is remarkably reduced, which causes so-called liquid leakage.
 また、中高部42は、中高中央部421から前方区域A側又は後方区域C側に向かって中高部42の前記最大幅部よりも横方向Yの長さが狭くなっている前方側凸部422又は後方側凸部423を備えている。言い換えれば、中高部42は、図2に示すように吸収性コア41を平面視して、中高中央部421の縦方向Xの前端部から第一領域41F側に向かって凸の前方側凸部422、及び中高中央部421の縦方向Xの後端部から第二領域41R側に向かって凸の後方側凸部423の何れか一方を少なくとも有しており、ナプキン1では、中高部42は、前方側凸部422及び後方側凸部423を有している。即ち、ナプキン1では、中高部42は、前方側凸部422、中高中央部421及び後方側凸部423に区分されている。 Further, the middle-high portion 42 has a front-side convex portion 422 whose length in the lateral direction Y is narrower than the maximum width portion of the middle-high portion 42 from the middle-high central portion 421 toward the front section A side or the rear section C side. Or the rear side convex part 423 is provided. In other words, the middle-high portion 42 is a front-side convex portion that is convex from the front end portion in the longitudinal direction X of the middle-high center portion 421 toward the first region 41F side in a plan view of the absorbent core 41 as shown in FIG. 422 and at least one of the rear-side convex portions 423 convex toward the second region 41R side from the rear end portion in the longitudinal direction X of the middle-high center portion 421. In the napkin 1, the middle-high portion 42 is The front side convex portion 422 and the rear side convex portion 423 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.
 ナプキン1では、図2に示すように、吸収性コア41における、前方側凸部422は中高中央部421の前端部に1個配され、後方側凸部423は中高中央部421の後端部に1個配されている。前方側凸部422は、前方側凸部422の頂部422tが縦方向Xに延びる中心線CL上に配されており、前方側凸部422を形成する両側辺422s,422sが、それぞれ、頂部422tから吸収性コア41の縦方向Xに沿う側縁41sに亘って直線形状に延びている。後方側凸部423は、前方側凸部422と同様に、後方側凸部423の頂部423tが縦方向Xに延びる中心線CL上に配されており、後方側凸部423を形成する両側辺423s,423sが、それぞれ、頂部423tから吸収性コア41の縦方向Xに沿う側縁41sに亘って延びている。 In the napkin 1, as shown in FIG. 2, in the absorbent core 41, one front convex portion 422 is arranged at the front end portion of the middle / high center portion 421, and the rear convex portion 423 is the rear end portion of the middle / high center portion 421. One is arranged in. The front side convex part 422 is arranged on the center line CL in which the top part 422t of the front side convex part 422 extends in the vertical direction X, and both side edges 422s and 422s forming the front side convex part 422 are the top parts 422t. To a side edge 41 s along the longitudinal direction X of the absorbent core 41. 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. 423s and 423s extend from the top portion 423t to the side edge 41s along the longitudinal direction X of the absorbent core 41, respectively.
 ナプキン1では、図2に示すように、吸収性コア41における前方側凸部422及び後方側凸部423は、それぞれ、縦方向Xに沿う両側部から横方向Yの中央部に位置する頂部422t,423tに向かって、その幅dが漸減するように形成されている。好適に、ナプキン1の吸収性コア41における前方側凸部422では、両側辺422s,422sの間隔(幅d)が、吸収性コア41の縦方向Xに沿う両側縁41s,41sから頂部422tに向かって漸減している。同様に、ナプキン1の吸収性コア41における後方側凸部423では、両側辺423s,423sの間隔(幅d)が、吸収性コア41の縦方向Xに沿う両側縁41s,41sから頂部423tに向かって漸減している。ここで、幅dが漸減しているとは、頂部422t,423tに向って幅dが連続的に少しずつ減少していることである。 In the napkin 1, as shown in FIG. 2, the front convex portion 422 and the rear convex portion 423 in the absorbent core 41 are respectively apexes 422 t that are located in the central portion in the lateral direction Y from both side portions along the longitudinal direction X. , 423t, the width d gradually decreases. 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.
 ナプキン1における吸収性コア41では、前方側凸部422及び後方側凸部423の内の前方側凸部422を例に挙げて説明すると、両側辺422s,422sがそれぞれ屈曲せずに真っ直ぐに延びている。一方の側辺422sと縦方向Xに延びる中心線CLとのなす角αは、身体形状へのフィット性及び動きの中での追従性向上の観点から、好ましくは20°以上、より好ましくは30°以上であり、そして、好ましくは75°以下、より好ましくは60°以下であり、具体的には、好ましくは20°以上75°以下、より好ましくは30°以上60°以下である。後方側凸部423も前方側凸部422と同様である。 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.
 中高部42の縦方向Xの全長L2は、吸収性コア41の縦方向Xの全長L1の、好ましくは25%以上、より好ましくは30%以上であり、また、好ましくは90%以下、より好ましくは75%以下であり、また、好ましくは25%以上90%以下、より好ましくは30%以上75%以下である。
 なお、全長L1とは吸収性コア41の縦方向Xにおける最も長い位置での距離を示し、全長L2とは中高部42の縦方向Xにおける最も長い位置での距離を意味する。
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.
 中高部42を構成する中高中央部421の縦方向Xの全長L3は、中高部42の全長L2の好ましくは20%以上、より好ましくは30%以上であり、また、好ましくは80%以下、より好ましくは70%以下であり、また、好ましくは20%以上80%以下、より好ましくは30%以上70%以下である。 The overall length L3 in the longitudinal direction X of the middle-high central portion 421 constituting the middle-high portion 42 is preferably 20% or more, more preferably 30% or more, and preferably 80% or less, more than the total length L2 of the middle-high portion 42. Preferably it is 70% or less, preferably 20% or more and 80% or less, more preferably 30% or more and 70% or less.
 中高部42を構成する前方側凸部422の縦方向Xの全長L4は、中高部42の全長L2の、好ましくは5%以上、より好ましくは10%以上であり、また、好ましくは50%以下、より好ましくは30%以下であり、また、好ましくは、5%以上50%以下、より好ましくは10%以上30%以下である。中高部42を構成する後方側凸部423の縦方向X全長も、前方側凸部422の縦方向Xの全長L4と同様である。
 なお、全長L4とは前方側凸部422の縦方向Xにおける最も長い位置での距離を意味する。
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.
 ナプキン1では、図2に示すように、吸収性コア41は、中間領域41Mに中高部42と中高部42以外の部分との境界を区画する中高境界溝部43を有している。中高境界溝部43は、ナプキン1では、中高部42を構成する前方側凸部422を形成する両側辺422s,422sに沿って延在する前方中高境界溝部43aと、後方側凸部423を形成する両側辺423s,423sに沿って延在する後方中高境界溝部43cとを有している。前方中高境界溝部43aと後方中高境界溝部43cは、吸収性コア41の横方向Yの全長(全幅)に亘り形成されている。このため、脚部からの吸収性コア41の幅方向の内側に働く力に対し、ナプキン1の縦方向に縦シワが生じ難く、ナプキン1が身体の形状に沿って3次元的にフィットし易くなる。このように、吸収性コア41では、前方中高境界溝部43aと後方中高境界溝部43cとによって中高部42との境界を区画している。 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 parts 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. The front middle / high boundary groove 43a and the rear middle / high boundary groove 43c are formed 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.
 ナプキン1では、吸収性コア41における中高境界溝部43の溝幅は、排泄対向区域Bにおける液の吸収性等を向上させる観点から、好ましくは、0.1mm以上、より好ましくは、0.5mm以上であり、また、好ましくは、5.0mm以下、より好ましくは、3.0mm以下であり、また、好ましくは0.1mm以上5.0mm以下、より好ましくは、0.5mm以上3.0mm以下である。尚、中高境界溝部43の溝幅及び後述する厚みは、中高境界溝部43の延びる方向に直交する方向に切断し、切端面の写真から計測する。
 ナプキン1では、吸収性コア41における中高境界溝部43での厚みは、排泄対向区域Bにおける液の吸収性等を向上させる観点から、好ましくは、0.08mm以上、より好ましくは、0.15mm以上、また、好ましくは、7.0mm以下、より好ましくは、3.5mm以下であり、また、好ましくは、0.08mm以上、7.0mm以下、より好ましくは、0.15mm以上3.5mm以下である
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
 ナプキン1では、中高境界溝部43は、中高部42の坪量よりも低く、更に、吸収性コア41における第一領域41Fの坪量及び第二領域41Rの坪量よりも坪量が低く形成されている。ここで、第一領域41Fの坪量及び第二領域41Rの坪量とは、溝部45を有する場合には、溝部45を除いた部分の坪量を意味する。中高境界溝部43の坪量は、好ましくは10g/m2以上、より好ましくは20g/m2以上であり、そして、好ましくは350g/m2以下、より好ましくは250g/m2以下であり、具体的には、好ましくは10g/m2以上350g/m2以下、より好ましくは20g/m2以上250g/m2以下である。尚、中高境界溝部43の坪量は、上述した吸収性コア41の各部の厚みの測定方法で説明したように切り出した中高境界溝部43の部分のサンプルの質量を、そのサンプルの肌対向面側の面の面積で除して求める。 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.
 ナプキン1では、吸収性コア41は、図2に示すように、その中間領域41Mにおける中高部42を除き、更に、中高境界溝部43を除く領域に、中高隣接部44を有している。即ち、ナプキン1では、吸収性コア41における中間領域41Mが、中高部42、中高境界溝部43及び中高隣接部44からなっている。中高隣接部44は、中間領域41Mにおいて、中高部42を構成する前方側凸部422に隣接する第一領域41F側に配された前方中高隣接部44aと、中高部42を構成する後方側凸部423に隣接する第二領域41R側に配された後方中高隣接部44cとを有している。前方中高隣接部44aは、縦方向Xに延びる中心線CLに対して左右対称に形成されている。前方中高隣接部44aにおける、中心線CLよりも吸収性コア41の縦方向Xに沿う一方の側縁41s側の半分の部分は、縦方向Xの長さが、該一方の側縁41sから中心線CLに向かって漸減するように形成されている。後方中高隣接部44cも、前方中高隣接部44aと同様に、縦方向Xに延びる中心線CLに対して左右対称に形成されている。後方中高隣接部44cにおける、中心線CLよりも吸収性コア41の縦方向Xに沿う一方の側縁41s側の半分の部分は、縦方向Xの長さが、該一方の側縁41sから中心線CLに向かって漸減するように形成されている。 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. 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. The rear middle high adjacent portion 44c is also formed symmetrically with respect to the center line CL extending in the vertical direction X, similarly to 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.
 ナプキン1では、中高隣接部44は、図4に示すように、その厚みが、中高境界溝部43の厚みよりも大きく、且つ、吸収性コア41における中高部42の厚みよりも小さく形成されている。さらには、身体の動きへの追従性の観点からは、中高隣接部44は、その厚みが、第一領域41Fの厚み及び第二領域41Rの厚みと同じか小さくなっていることが好ましい。尚、身体の動きに対し、繰り返し変形した際の吸収性コア41の強度の観点から、中高隣接部44は、その厚みが、第一領域41Fの厚み及び第二領域41Rの厚みより大きくなっていてもよい。
 中高隣接部44の厚みは、好ましくは0.5mm以上、より好ましくは1.0mm以上であり、また、好ましくは10.0mm以下、より好ましくは7.0mm以下であり、また、好ましくは0.5mm以上10.0mm以下、より好ましくは1.0mm以上7.0mm以下である。
 中高隣接部44の厚みは、上述した吸収性コア41の各部の厚みの測定方法に基づいて測定される。
In the napkin 1, as shown in FIG. 4, the middle-high adjacent portion 44 is formed so that the thickness is larger than the thickness of the middle-high boundary groove portion 43 and smaller than the thickness of the middle-high portion 42 in the absorbent core 41. . 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 thickness of the first region 41F and the thickness of 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.
 ナプキン1では、中高隣接部44は、その坪量が、吸収性コア41の中高部42の坪量より小さく、且つ、中高境界溝部43の坪量よりも大きく形成されている。さらには、身体の動きへの追従性の観点からは、中高隣接部44は、その坪量が、吸収性コア41における第一領域41Fの坪量及び第二領域41Rの坪量と同じか小さくなっていることが好ましい。尚、身体の動きに対し、繰り返し変形した際の吸収性コア41の強度の観点から、中高隣接部44は、その坪量が、第一領域41Fの坪量及び第二領域41Rの坪量よりも大きくなっていてもよい。ここで、第一領域41Fの坪量及び第二領域41Rの坪量とは、溝部45を有する場合には、溝部45を除いた部分の坪量を意味する。中高隣接部44の坪量は、好ましくは20g/m2以上、より好ましくは50g/m2以上であり、そして、好ましくは800g/m2以下、より好ましくは700g/m2以下であり、具体的には、好ましくは20g/m2以上800g/m2以下、より好ましくは50g/m2以上700g/m2以下である。尚、中高隣接部44の坪量は、上述した吸収性コア41の各部の厚みの測定方法で説明したように切り出した中高隣接部44のサンプルの質量を、そのサンプルの肌対向面側の面の面積で除して求める。 In the napkin 1, the middle and high adjacent portions 44 are formed so that the basis weight 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. 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
 ナプキン1では、吸収性コア41における第一領域41F及び第二領域41Rは、それぞれ、図2に示すように、相対的に坪量が小さい溝部45と相対的に坪量が大きい小吸収部46とを有している。好適には、溝部45は、縦方向Xに延びる縦溝45Xと、横方向Yに延びる横溝45Yとからなる。そして、縦方向Xに延びる縦溝45Xは、横方向Yに一定の間隔を空けて配され、横方向Yに延びる横溝45Yは、縦方向Xに一定の間隔を空けて配されている。小吸収部46は、縦溝44Y及び横溝44Xで区画された格子の目の位置に配されている。上述した第一領域41F及び第二領域41Rの厚み及び坪量とは、小吸収部46の厚み及び坪量を意味する。 In the napkin 1, the first region 41F and the second region 41R in the absorbent core 41 are each formed of a groove portion 45 having a relatively small basis weight and a small absorbent portion 46 having a relatively large basis weight, as shown in FIG. And have. Preferably, the groove 45 includes 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.
 ナプキン1では、第一領域41F及び第二領域41Rに溝部45及び小吸収部46を有し、中間領域41Mに中高部42、中高境界溝部43及び中高隣接部44を有する吸収性コア41は、その全体が一体成形されている。「一体成形されている」とは、別の工程で製造した部材どうしを接着剤や圧縮などの接合手段で結合したものとは異なり、同一の材料を用いて、一つの工程で一体的に形成されていることを意味する。 In the napkin 1, the absorbent core 41 having the groove portion 45 and the small absorption portion 46 in the first region 41F and the second region 41R, and having the middle-high portion 42, the middle-high boundary groove portion 43, and the middle-high adjacent portion 44 in the intermediate region 41M, The whole 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
 上述したナプキン1の吸収性コア41は、例えば、図5(a)に示すように、外周面に集積用凹部55を備え、一方向Rに回転する積繊ドラム54と、該積繊ドラム54の外周面に、コア材料を飛散状態で供給するダクト(図示せず)を備えた積繊装置を用いて製造することができる。
 集積用凹部55は、積繊ドラム54の外周面の周方向に一定の間隔で複数個形成されている。集積用凹部55の底面56は、メッシュプレート等からなり、吸引孔として機能する多数の細孔を有している。
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.
 また、図5(a)に示すように、1個の集積用凹部55の底面56の一部には、吸収性コア41の中間領域41Mを形成するための1つの凹部56bが形成されている。また、凹部56bには、その底面に、中高部42と中高隣接部44とを区分する中高境界溝部43を形成するための第1難通気性部材57が配置されている。第1難通気性部材57は、中高境界溝部43に対応する位置に配され、凹部56bの底面から突出するように固定されている。また、凹部56bに隣接する回転方向Rの上流側領域及び下流側領域の底面56には、溝部45を形成するための第2難通気性部材58が配置されている。第2難通気性部材58は、縦溝44Y及び横溝44Xに対応する位置に配され、集積用凹部55の底面56から突出するように固定されている。第1難通気性部材57及び第2難通気性部材58は、非通気性部材であっても良く、例えば金属やプラスチック、セラミック等からなる。 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 43 that separates the middle-high portion 42 and the middle-high adjacent portion 44 is disposed on the bottom surface of the recess 56b. 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. 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 and the second breathable member 58 may be non-breathable members, and are made of, for example, metal, plastic, ceramic, or the like.
 積繊ドラムを備えた公知の積繊装置と同様に、集積用凹部55の底面から吸引しつつ、ダクト内に、吸水性ポリマーとパルプ繊維とを混合したコア材料を供給することによって、図5(b)に示すように、コア材料が集積用凹部55内に所定形状に堆積する。その堆積物40を、集積用凹部55から離型することで、吸収性コア41の前駆体が得られる。吸収性コア41の前駆体は、コアラップシート(不図示)で被覆された後に、ロータリーカッター等でカットされ、搬送方向にベルトコンベア等の搬送手段によって搬送される。このようにして吸収性コア41が得られる。このようにして得られたコアラップシート(不図示)で被覆された吸収性コア41は、一対のロール間に単回又は複数回通すこと等により、全体又は部分的に加圧し適度に圧縮させる。これにより、凹部56bに堆積した部分が、坪量及び厚みともに相対的に大きい中高部42となる。同様に、凹部56bに隣接する上流側領域及び下流側領域に堆積したコア材料からなる部分が、坪量が相対的に小さい吸収性コア41における第一領域41F及び第二領域41Rとなる。また、凹部56bの第1難通気性部材57上に堆積したコア材料からなる部分が、第一領域41Fの坪量及び第二領域41Rの坪量よりも相対的に小さい中高境界溝部43となる。凹部56bに隣接する上流側領域及び下流側領域の第2難通気性部材58上に堆積したコア材料からなる部分が、小吸収部46の坪量よりも相対的に小さい溝部45となる。 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. . 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.
 上述した本実施形態のナプキン1の各構成部材の形成材料について説明する。
 肌対向面を形成する肌側シート2は、液透過性を有し、熱可塑性合成樹脂を含む素材で構成され、例えば、エアースルー繊維不織布、スパンボンド不織布、ポイントボンド不織布等の繊維不織布を好適に用いることができる。熱可塑性樹脂の例として、エチレン、プロピレン等のオレフィン系ポリマー、又は、ポリエチレンテレフタレートが挙げられるが、これらに限定されるものではない。肌側シート2は、例えば、坪量が10~100g/m2であり、厚さが0.5~5.0mmであることが好ましい。また、肌側シート2は、当該技術分野において従来用いられてきたものと同様のものを特に制限なく用いることができ、穿孔フィルム等を用いることもできる。
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.
 非肌側シート3は、難透液性又は、不透過性を有し、熱可塑性合成樹脂を含む素材で構成され、例えば、合成樹脂製フィルム、合成樹脂製フィルムと不織布の積層体や、スパンボンド-メルトブローン-スパンボンド積層繊維不織布、エアースルー繊維不織布、ポイントボンド繊維不織布、スパンボンド繊維不織布等の耐水圧が高い撥水性の不織布を用いることができるが、これらに限定されるものではなく、当該技術分野において従来用いられてきたものと同様のものを特に制限なく用いることができる。非肌側シート3は、例えば、坪量が10~50g/m2であり、厚さが、8~200μmであることが好ましい。 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-meltblown-spunbond laminated fiber nonwoven fabric, air-through fiber nonwoven fabric, point bond fiber nonwoven fabric, spunbond fiber nonwoven fabric, etc. can be used, but is not limited to these, 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.
 吸収性コア41のコア材料は、パルプ繊維等の繊維材料からなる繊維集合体を含んでなる。繊維材料としては、従来、生理用ナプキンやパンティライナー、使い捨ておむつ等の吸収性物品の吸収体に用いられている各種のものを特に制限なく用いることができ、例えば、パルプ繊維、レーヨン繊維、コットン繊維等のセルロース系繊維の短繊維や、ポリエチレン等の合成繊維の短繊維等が用いられる。これらの繊維は、1種を単独で又は2種以上を組み合わせて用いることができる。また、繊維材料は、全体又は一部がパルプ繊維であることが好ましく、繊維材料中のパルプ繊維の割合は50~100質量%であることが好ましく、より好ましくは80~100質量%であり、更に好ましくは100質量%である。
 また、吸収性コア41には吸水性ポリマーが含有されていてもよい。吸水性ポリマーとしては、例えば、ポリアクリル酸ナトリウム、(アクリル酸-ビニルアルコール)共重合体、ポリアクリル酸ナトリウム架橋体、(でんぷん-アクリル酸)グラフト共重合体、(イソブチレン-無水マレイン酸)共重合体及びそのケン化物、ポリアスパラギン酸等が挙げられる。吸水性ポリマーが含有されることで、より安定的に大量の血液などの排泄液を素早く吸収し、保持することができる。
 また、吸収性コア41には、消臭剤や抗菌剤等を必要に応じて配合しても良い。
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. The fiber material is preferably 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.
 吸収性コア41を被覆するコアラップシート(不図示)としては、ティッシュペーパー、透水性の不織布等が挙げられる。吸収体4は、吸収性コア41の上下両面をコアラップシート(不図示)で被覆して形成されている。コアラップシート(不図示)は、吸収性コア41の形成材料の漏れ出しを防止したり、吸収性コア41の保形性を高めたりする目的で使用される。吸収性コア41の肌対向面側を被覆するコアラップシート(不図示)と肌側シート2との間、及び吸収性コア41の非肌対向面側を被覆するコアラップシート(不図示)と非肌側シート3との間は、ドット、スパイラル、ストライプ等のパターン塗工された接着剤により互いに接合されていることが好ましい。 Examples of the core wrap sheet (not shown) for covering 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.
 サイドシート5としては、当該技術分野において従来用いられている各種のものを特に制限なく用いることができ、例えば、液不透過性又は撥水性の樹脂フィルム、樹脂フィルムと不織布との積層体等を用いることができる。その他の材料としては、例えば、スパンボンド不織布、スパンボンド不織布(S)とメルトブロー不織布(M)とが複合化されたシート(例えばSM、SMS、SMMS等)、ヒートロール不織布、エアースルー不織布等の撥水性(疎水性)不織布が挙げられる。 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.
 サイドシート5と肌側シート2とを接合する接合部6は熱シール加工により常法に従って形成することができる。
 線状圧搾溝7(第1横圧搾溝71、第2横圧搾溝72及び縦圧搾溝73)は、熱を伴うか又は伴わない圧搾加工(いわゆるエンボス加工)、あるいは超音波エンボス等のエンボス加工により常法に従って形成することができる。
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, and the vertical pressing groove 73) is a pressing process (so-called embossing) with or without heat, or an embossing process such as ultrasonic embossing. Can be formed according to a conventional method.
 上述した本実施形態のナプキン1の作用効果について説明する。
 ナプキン1は、図1~図2に示すように、吸収性コア41における中間領域41Mに中高部42を有し、中高部42は、図2に示すように、吸収性コア41を平面視して、吸収性コア41の横方向Yにおける長さが最大となる最大幅部を有し、該最大幅部の横方向Yの長さが、吸収性コア41の中間領域41Mの横方向Yの長さと同じである。その為、吸収性物品であるナプキン1が多少ズレた状態で着用されても、身体形状への追従性に優れることで着用者に違和感を与え難く、着用者の肌との間に隙間を生じ難く、十分な吸収性能が発現できる。特に、ナプキン1では、前記最大幅部が吸収性コア41の縦方向Xに沿う両側縁に従って縦方向Xに所定の長さに延在して形成される中高中央部421を有している。その為、排泄液の吸収量を高めることができるとともに、吸収性物品であるナプキン1が多少ズレた状態で着用された場合や、着用時の身体の動作や就寝時の身体の姿勢などに対しても、十分な吸収性能が発現できる。また、中高部42は、図2に示すように平面視して、中高中央部421と、中高中央部421の縦方向Xの前端部から第一領域41F側に向かって凸の前方側凸部422、及び中高中央部421の縦方向Xの後端部から第二領域41R側に向かって凸の後方側凸部423の何れか一方を少なくとも有している。その為、ナプキン1が多少ズレた状態で着用されても、中高部42が前方側凸部422及び後方側凸部423の何れか一方を有していれば、両大腿部からナプキン1の横方向Y内側への力に対し、前方側凸部422及び後方側凸部423が変形することで、中高部42が身体形状への追従性に優れ、着用者に違和感を与え難くなっている。また、ナプキン1が多少ズレた状態で着用されても、中高部42が前方側凸部422及び後方側凸部423の何れか一方を有していれば、着用者の肌との間に隙間を生じ難く、十分な吸収性能が発現できる。このように、ナプキン1の着用中に身体に対するフィット性が維持でき、液漏れが発生し難い。ナプキン1では、特に、中高部42が前方側凸部422及び後方側凸部423の両方を有しているので、前記効果を一層奏することができる。
The effect of the napkin 1 of this embodiment mentioned above is demonstrated.
As shown in FIGS. 1 and 2, the napkin 1 has a middle-high portion 42 in an intermediate region 41M of the absorbent core 41. The middle-high portion 42 is a plan view of the absorbent core 41 as shown in FIG. Thus, the absorbent core 41 has a maximum width portion in which the length in the lateral direction Y is the maximum, and the length of the maximum width portion in the lateral direction Y is the transverse direction Y of the intermediate region 41M of the absorbent core 41. It is the same as the length. Therefore, even if the napkin 1 which is an absorbent article is worn in a slightly shifted state, it is difficult to give the wearer a sense of incongruity due to excellent conformability to the body shape, and a gap is formed between the skin of the wearer It is difficult and sufficient absorption performance can be expressed. In particular, in the napkin 1, the maximum width portion has a middle-high central portion 421 formed to extend to a predetermined length in the longitudinal direction X along both side edges along the longitudinal direction X of the absorbent core 41. Therefore, it is possible to increase the amount of excreted fluid absorbed, and when the napkin 1 that is an absorbent article is worn in a slightly shifted state, the body movement during wearing, the body posture during sleeping, etc. However, sufficient absorption performance can be expressed. Moreover, the middle-high part 42 is a front-side convex part that is convex toward the first region 41F side from the front end part in the longitudinal direction X of the middle-high center part 421 in plan view as shown in FIG. 422 and the rear side convex part 423 which protrudes toward the 2nd area | region 41R side from the rear-end part of the vertical direction X of the middle-high center part 421 are provided. Therefore, even if the napkin 1 is worn in a slightly shifted state, if the middle-high part 42 has either the front convex part 422 or the rear convex part 423, the napkin 1 By deforming the front-side convex portion 422 and the rear-side convex portion 423 with respect to the force inward in the lateral direction Y, the middle-high portion 42 has excellent followability to the body shape, and it is difficult for the wearer to feel uncomfortable. . Moreover, even if the napkin 1 is worn in a slightly displaced state, if the middle-high portion 42 has either one of the front-side convex portion 422 and the rear-side convex portion 423, there is a gap between the wearer's skin. And sufficient absorption performance can be expressed. Thus, the fit with the body can be maintained while the napkin 1 is worn, and liquid leakage is unlikely to occur. In the napkin 1, since the middle-high part 42 has both the front side convex part 422 and the back side convex part 423, the said effect can be produced further.
 また、ナプキン1は、図2に示すように、吸収性コア41における前方側凸部422及び後方側凸部423がそれぞれ、縦方向Xに沿う両側部から横方向Yの中央部に位置する頂部422t,423tに向かって、その幅dが漸減するように形成されている。その為、ナプキン1が多少ズレた状態で着用されても、身体形状への追従性に更に優れており、着用者に違和感を更に与え難くなっている。 In addition, as shown in FIG. 2, the napkin 1 has a top portion in which the front-side convex portion 422 and the rear-side convex portion 423 in the absorbent core 41 are located in the center portion in the horizontal direction Y from both side portions along the vertical direction X. The width d is formed so as to gradually decrease toward 422t and 423t. Therefore, even if the napkin 1 is worn in a slightly shifted state, the followability to the body shape is further improved, and it is difficult to give the wearer a sense of incongruity.
 また、ナプキン1は、図2に示すように、吸収性コア41における中間領域41Mに中高部42と、中高部42以外の部分を区画する中高境界溝部43を有している。中高境界溝部43は、中高部42の坪量よりも低く、更に、吸収性コア41における第一領域41F及び第二領域41Rの坪量よりも坪量が低く形成されている。その為、中高境界溝部43を起点に折れ曲り易く、着用者に違和感を与え難くなっている。更に、中高境界溝部43が、吸収性コア41の横方向Yの全長に亘って形成されていることで、吸収性コア41の幅方向側縁部においても、着用者の身体形状や動きに合わせて折れ曲がり易くなり、より一層フィット性が向上する。 Further, as shown in FIG. 2, the napkin 1 has a middle-high portion 42 and a middle-high boundary groove portion 43 that defines a portion other than the middle-high portion 42 in the intermediate region 41 </ b> M of the absorbent core 41. 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 41 </ b> F and the second region 41 </ b> R in the absorbent core 41. Therefore, it is easy to bend | fold from the middle-high boundary groove part 43, and it is hard to give a wearer an uncomfortable feeling. Furthermore, since the middle / high boundary groove 43 is formed over the entire length in the lateral direction Y of the absorbent core 41, the width-direction side edge of the absorbent core 41 also matches the body shape and movement of the wearer. This makes it easier to bend and further improve fit.
 また、ナプキン1は、図2に示すように、吸収性コア41における中間領域41Mに、中高部42を構成する前方側凸部422に隣接する第一領域41F側に配された前方中高隣接部44aと、中高部42を構成する後方側凸部423に隣接する第二領域41R側に配された後方中高隣接部44cとを有している。そして、中高隣接部44の厚みが、吸収性コア41における第一領域41Fの厚み及び第二領域41Rの厚み以下の大きさであり、且つ、中高部42の厚みよりも小さく形成されている。その為、ナプキン1が多少ズレた状態で着用されても、着用者の肌との間に隙間を生じ難く、十分な吸収性能が発現できる。ナプキン1では、中高隣接部44の坪量が、吸収性コア41における第一領域41Fの坪量及び第二領域41Rの坪量より小さく、且つ、中高境界溝部43の坪量よりも大きく形成されているので、前記効果のうち、着用者への違和感を低減する効果をより一層奏することができる。 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.
 尚、特にナプキン1を長時間にわたり装着する場合などで、身体の動きにより、ナプキン1が繰り返し変形することで、中高隣接部44が破損して吸収性能を損なうおそれがある場合には、中高隣接部44の厚みは、吸収性コア41における第一領域41F及び第二領域41Rの厚みより大きくなっていてもよい。
 さらに、身体の動きより、繰り返し変形することで、中高隣接部44が破損して吸収性能を損なう場合には、中高隣接部44の坪量は、吸収性コア41における第一領域41F及び第二領域41Rの坪量より大きくなっていてもよい。
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.
 また、ナプキン1は、図2に示すように、吸収性コア41における第一領域41F及び第二領域41Rに、溝部45及び小吸収部46を有しているので、溝部45を起点に折れ曲り易く、着用者に違和感を与え難くなっている。 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.
 以上、本発明をその好ましい実施形態に基づき説明したが、本発明の吸収性物品は本実施形態のナプキン1に何ら制限されるものではなく、適宜変更可能である。 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.
 例えば、ナプキン1の吸収性コア41における前方側凸部422では、図2に示すように、両側辺422s,422sがそれぞれ屈曲せずに、吸収性コア41の縦方向Xに沿う側縁41sから頂部422tに向かって真っ直ぐに直線状に延びており、前方側凸部422の幅dが、吸収性コア41の縦方向Xに沿う側縁41sから頂部422tに向かって連続的に漸減しているが、前方側凸部422の幅dが単に漸減していれば、段階的に漸減していてもよい。前方側凸部422が真っ直ぐに直線状に延びており、前方側凸部422の幅dが、吸収性コア41の縦方向Xに沿う両側縁41s,41sから頂部422tに向かって連続的に漸減していることで、身体へのフィット性の向上に加え、前記積繊装置における前記集積用凹部55から離型する際の離型性が向上する点から好ましい。以下に、前方側凸部422の幅dが漸減する例として、図6(a)~図6(e)に示す例を挙げて説明する。後方側凸部423も同様である。 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. Hereinafter, as an example in which the width d of the front-side convex portion 422 is gradually reduced, an example shown in FIGS. 6A to 6E will be described. The same applies to the rear convex portion 423.
 図6(a)に示す吸収性コア41の前方側凸部422は、吸収性コア41の縦方向Xに沿う側縁41sから頂部422tに向かって曲率半径が一定の曲線を描いて形成されている。このように頂部422tに向かって凸の形状を描いているので、前方側凸部422の幅dが漸減するようになる。 The front convex portion 422 of the absorbent core 41 shown in FIG. 6A is formed in a curve having a constant curvature radius from the side edge 41s along the longitudinal direction X of the absorbent core 41 toward the top portion 422t. Yes. Thus, since the convex shape is drawn toward the top part 422t, the width d of the front side convex part 422 gradually decreases.
 次に、図6(b)に示す吸収性コア41の前方側凸部422は、吸収性コア41の縦方向Xに沿う側縁41sから頂部422tに向かって、側辺422sが途中で屈曲した直線で形成されている。このように頂部422tに向かって凸の形状を描いているので、前方側凸部422の幅dが漸減するようになる。 Next, as for the front side convex part 422 of the absorptive core 41 shown in FIG.6 (b), the side 422s bent on the way from the side edge 41s along the vertical direction X of the absorptive core 41 to the top part 422t. It is formed with a straight line. Thus, since the convex shape is drawn toward the top part 422t, the width d of the front side convex part 422 gradually decreases.
 次に、図6(c)に示す吸収性コア41の前方側凸部422は、吸収性コア41の縦方向Xに沿う側縁41sから頂部422tに向かって、曲率半径が異なる複数の曲線を描いて形成されている。このように頂部422tに向かって凸の形状を描いているので、前方側凸部422の幅dが段階的に漸減するようになる。 Next, the front-side convex portion 422 of the absorbent core 41 shown in FIG. 6C has a plurality of curves with different curvature radii from the side edge 41s along the longitudinal direction X of the absorbent core 41 toward the top portion 422t. It is drawn and formed. Thus, since the convex shape is drawn toward the top portion 422t, the width d of the front side convex portion 422 gradually decreases.
 次に、図6(d)に示す吸収性コア41の前方側凸部422は、吸収性コア41の縦方向Xに沿う側縁41sから頂部422tに向かって、側辺422sが途中まで直線で形成されており、途中から曲率半径が一定の曲線を描いて形成されている。このように頂部422tに向かって凸の形状を描いているので、前方側凸部422の幅dが漸減するようになる。 Next, as for the front side convex part 422 of the absorptive core 41 shown in FIG.6 (d), the side edge 422s is straight to the middle from the side edge 41s along the vertical direction X of the absorptive core 41 to the top part 422t. It is formed by drawing a curve with a constant radius of curvature from the middle. Thus, since the convex shape is drawn toward the top part 422t, the width d of the front side convex part 422 gradually decreases.
 次に、図6(e)に示す吸収性コア41の前方側凸部422は、吸収性コア41の縦方向Xに沿う側縁41sから頂部422tに向かって、図6(d)に示す吸収性コア41の前方側凸部422とは逆に、曲率半径が一定の曲線を描いて側辺422sが途中まで形成されており、途中から直線で形成されている。このように頂部422tに向かって凸の形状を描いているので、前方側凸部422の幅dが漸減するようになる。 Next, the front convex portion 422 of the absorbent core 41 shown in FIG. 6 (e) is absorbed from the side edge 41 s along the longitudinal direction X of the absorbent core 41 toward the top portion 422 t as shown in FIG. 6 (d). Contrary to the front convex part 422 of the elastic core 41, the side 422s is formed halfway along a curved line having a constant radius of curvature, and is formed from the middle with a straight line. Thus, since the convex shape is drawn toward the top part 422t, the width d of the front side convex part 422 gradually decreases.
 また、ナプキン1の前方側凸部422は、図2に示すように、中高中央部421の前端部に1個のみ配されているが、図6(f)に示すように、中高中央部421の前端部に複数個配されていてもよい。 Further, as shown in FIG. 2, only one front-side convex portion 422 of the napkin 1 is arranged at the front end portion of the middle-high center portion 421. However, as shown in FIG. A plurality of the front end portions may be arranged.
 また、ナプキン1の第一領域41F及び第二領域41Rは、厚みが同じであるが、中高部42の厚みよりも小さければ、互いに異なる厚みであってもよい。また、ナプキン1の第一領域41F及び第二領域41Rは、坪量が同じであるが、中高部42の坪量よりも小さければ、互いに異なる坪量であってもよい。また、ナプキン1の第一領域41F及び第二領域41Rは、溝部45及び小吸収部46を有しているが、有していなくてもよく、異なる形状の溝部45及び小吸収部46を有していてもよい。 Further, 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.
 また、ナプキン1の吸収性コア41は、その全体が一体成形されているが、一体成形されていなくてもよい。例えば、吸収性コア41において、第一領域41Fから第二領域41Rに亘って同じ高さにコア材料で形成しておき、次に、に別のコア材料で形成されたものを配置して中高部42を形成してもよい。 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 absorbent 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 at The part 42 may be formed.
 また、ナプキン1の吸収性コア41は、面方向全体に亘って分断されていない連続層を備えていてもよい。 Moreover, the absorptive core 41 of the napkin 1 may include a continuous layer that is not divided over the entire surface direction.
 また、ナプキン1は、図1に示すように、肌側シート2の肌対向面における縦方向Xに沿う両側部に、サイドシート5を配しているが、サイドシート5の自由端部に、縦方向Xに伸長状態の弾性部材を配して防漏カフを形成していてもよい。 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.
 また、ナプキン1は、図1に示すように、排泄対向区域Bの縦方向Xに沿う左右両側に一対のウイング部1W,1Wを有しているが、一対のウイング部1W,1Wを有していなくてもよい。また、一対のウイング部1W,1Wに加えて、後方区域Cの縦方向Xに沿う左右両側に一対の後方フラップを有していてもよい。 Further, as shown in FIG. 1, the napkin 1 has a pair of wing portions 1W and 1W on both the left and right sides along the longitudinal direction X of the excretion facing area B, but has a pair of wing portions 1W and 1W. It does not have to be. Moreover, in addition to a pair of wing parts 1W and 1W, you may have a pair of back flaps in the right-and-left both sides along the vertical direction X of the back area C.
 また、図1に示すナプキン1では、肌側シート2と吸収性コア41とが圧搾一体化された線状溝として、吸収性コア41の縦方向Xに延びる一対の縦圧搾溝73を有しており、縦圧搾溝73が、より一層の漏れの防止の観点から、吸収性コア41における中高部42、中高境界溝部43、中高隣接部44を縦方向Xに縦断するように形成されている。しかし、図7に示すナプキン1のように、吸収体4の排泄対向区域Bにおける縦方向Xの前後端部で、一対の縦圧搾溝73及び一対の第1横圧搾溝71よりも内側に、それぞれ横方向Yに延びる第2横圧搾溝72を有していてもよい。このようにナプキン1の内側に第2横圧搾溝72を設けることで、ナプキン1が第2横圧搾溝72を起点に変形することができ、肌へのフィット性がより向上する。 Moreover, in the napkin 1 shown in FIG. 1, it has a pair of vertical pressing groove | channel 73 extended in the vertical direction X of the absorbent core 41 as a linear groove | channel where the skin side sheet | seat 2 and the absorbent core 41 were integrated. The vertical squeezing groove 73 is formed so as to longitudinally cut the middle / high part 42, the middle / high boundary groove part 43, and the middle / high adjacent part 44 in the absorbent core 41 in the longitudinal direction X from the viewpoint of preventing further leakage. . However, like the napkin 1 shown in FIG. 7, at the front and rear ends in the longitudinal direction X in the excretion facing area B of the absorbent body 4, inside the pair of vertical pressing grooves 73 and the pair of first lateral pressing grooves 71, You may have the 2nd horizontal pressing groove 72 each extended in the horizontal direction Y. Thus, by providing the 2nd horizontal pressing groove 72 inside the napkin 1, the napkin 1 can deform | transform from the 2nd horizontal pressing groove 72, and the fitting property to skin improves more.
 また、図8に示すナプキン1のように、排泄対向区域Bの縦方向Xに沿う一対の縦圧搾溝73,73の幅方向Yの外側に一対の縦圧搾溝73A,73Aを設けても良い。縦圧搾溝73A,73Aを設けることで、第一領域41F及び第二領域41Rの吸収性、柔軟性を維持しながら、より一層排泄部のヨレの防止が可能となる。縦圧搾溝73A,73Aは、縦方向Xにおいて、中間領域41Mの位置に配されていることが、ヨレ防止やフィット性の観点でより好ましい。 Moreover, you may provide a pair of vertical pressing groove 73A, 73A in the outer side of the width direction Y of a pair of vertical pressing groove 73, 73 in alignment with the vertical direction X of the excretion opposing area B like the napkin 1 shown in FIG. . By providing the vertical squeezing grooves 73A and 73A, the excretion of the excretory portion can be further prevented while maintaining the absorbability and flexibility of the first region 41F and the second region 41R. The vertical pressing grooves 73A and 73A are more preferably arranged at the position of the intermediate region 41M in the vertical direction X from the viewpoint of twist prevention and fit.
 また、ナプキン1の吸収性コア41は、溝部45を非肌対向面側に形成してもよい。これにより、液拡散性及び液保持性が向上する。 Further, the absorbent core 41 of the napkin 1 may have the groove 45 formed on the non-skin facing surface side. Thereby, liquid diffusibility and liquid retention are improved.
 また、ナプキン1においては、ナプキン1の前方区域Aの大きさと吸収性コア41の第一領域41Fの大きさとは略一致しているが、一致していなくてもよい。また、ナプキン1の後方区域Cの大きさと吸収性コア41の第二領域41Rの大きさとは略一致しているが、一致していなくてもよい。 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.
 また、本発明の吸収性物品は、生理用ナプキンの他、パンティライナー(おりものシート)、失禁パッド等であってもよい。 The absorbent article of the present invention may be a sanitary napkin, a panty liner (cage sheet), an incontinence pad, or the like.
 前述した本発明の実施形態に関し、更に以下の吸収性物品を開示する。 The following absorbent article is further disclosed regarding the embodiment of the present invention described above.
<1>
 着用者の前後方向に対応する縦方向に長い形状の吸収性コアを備え、前方区域及び後方区域を有する吸収性物品であって、
 前記吸収性コアは、前記前方区域側に位置する第一領域及び前記後方区域側に位置する第二領域との間に中間領域を有し、該中間領域には、該第一領域及び該第二領域における厚みよりも、厚みの厚い中高部を備えており、
 前記中高部は、前記吸収性コアを平面視して、該吸収性コアの前記縦方向と直交する横方向における長さが最大となる最大幅部を有し、該最大幅部での横方向の長さが、前記吸収性コアの該横方向の長さと同じである、吸収性物品。
<2>
 前記中高部は、前記最大幅部が前記吸収性コアの前記縦方向に沿う両側縁に従って前記縦方向に所定の長さに延在して形成される中高中央部を備えている前記<1>に記載の吸収性物品。
<1>
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. Equipped with a thick middle and high part than the thickness in the two areas,
The middle-high portion has a maximum width portion in which the length in the lateral direction orthogonal to the longitudinal direction of the absorbent core is maximized in a plan view of the absorbent core, and the lateral direction at the maximum width portion The absorbent article has the same length as the transverse length of the absorbent core.
<2>
<1> The middle-high portion includes a middle-high center portion in which the maximum width portion is formed to extend to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core. Absorbent article as described in 1.
<3>
 前記中高部は、前記中高中央部から前方側又は後方側に向かって前記最大幅部よりも横方向の長さが狭くなっている前方側凸部又は後方側凸部を備えている、前記<2>に記載の吸収性物品。
<4>
 前記中高部は、前記前方側凸部及び前記後方側凸部を有している前記<3>に記載の吸収性物品。
<5>
 前記前方側凸部は、前記中高中央部の縦方向の前端部に1個配され、前記後方側凸部は前記中高中央部の縦方向の後端部に1個配されており、
 前記前方側凸部及び前記後方側凸部は、それぞれ、縦方向に沿う両側部から横方向の中央部に位置する頂部に向かって、その横方向の長さが漸減するように形成されている前記<4>に記載の吸収性物品。
<6>
 前記中高部は、肌当接面側に、前記吸収性コアにおける前記第一領域及び前記第二領域の坪量よりも坪量が低い凹部を有さない、前記<1>~<5>の何れか1に記載の吸収性物品。
<7>
 前記中高部は、前記吸収性コアにおける前記第一領域の坪量及び前記第二領域の坪量よりも坪量が高く形成されている前記<1>~<6>の何れか1に記載の吸収性物品。
<8>
 前記吸収性コアは、前記中間領域に前記中高部と該中高部以外の部分との境界を区画する中高境界溝部を有し、
 前記中高境界溝部は、前記吸収性コアの横方向の全長に亘り形成されている、前記<1>~<7>の何れか1に記載の吸収性物品。
<9>
 前記中高境界溝部は、前記吸収性コアにおける前記第一領域及び前記第二領域の坪量よりも坪量が低く形成されている前記<8>に記載の吸収性物品。
<10>
 前記中高部は、前記最大幅部が前記吸収性コアの前記縦方向に沿う両側縁に従って前記縦方向に所定の長さに延在して形成される中高中央部を備え、
 前記中高中央部は、断面視において、横方向の中央部から縦方向に沿う両側部に向かって、その高さが低くなるように形成されている前記<1>~<9>の何れか1に記載の吸収性物品。
<11>
 前記中高部は、前記最大幅部が前記吸収性コアの前記縦方向に沿う両側縁に従って前記縦方向に所定の長さに延在して形成される中高中央部を備え、
 前記中高中央部は、断面視において、横方向の中央部から縦方向に沿う両側部に向かって、その坪量が小さくなるように形成されている前記<1>~<9>の何れか1に記載の吸収性物品。
<12>
 前記吸収性コアは、前記中間領域に前記中高部と該中高部以外の部分との境界を区画する中高境界溝部を有し、前記中間領域における前記中高部及び該中高境界溝部を除く領域に中高隣接部を有し、
 前記中高隣接部は、その坪量が、前記中高部の坪量より小さく、且つ、前記中高境界溝部の坪量よりも大きい、前記<1>~<11>の何れか1に記載の吸収性物品。
<13>
 前記中高隣接部は、その坪量が、前記吸収性コアにおける前記第一領域及び前記第二領域の坪量と、同じか小さい、前記<12>に記載の吸収性物品。
<14>
 前記吸収性コアは、前記中間領域に前記中高部と該中高部以外の部分との境界を区画する中高境界溝部を有し、前記中間領域における前記中高部及び該中高境界溝部を除く領域に中高隣接部を有し、
 前記中高隣接部は、その厚みが、前記中高境界溝部の厚みより大きく、且つ、前記中高部の厚みよりも小さい、前記<1>~<13>の何れか1に記載の吸収性物品。
<15>
 前記中高隣接部は、その厚みが、前記吸収性コアにおける前記第一領域及び前記第二領域の厚みと、同じか小さい、前記<14>に記載の吸収性物品。
<16>
 前記吸収性コアは、その面方向全体に亘って分断されていない連続層を備えている、前記<1>~<15>の何れか1に記載の吸収性物品。
<17>
 前記中高部の縦方向の全長は、前記吸収性コアの縦方向の全長の25%以上80%以下である、前記<1>~<16>の何れか1に記載の吸収性物品。
<18>
 前記中高部における前記中高中央部の縦方向の全長は、前記中高部の縦方向の全長の20%以上80%以下である、前記<2>~<5>の何れか1に記載の吸収性物品。
<19>
 前記吸収性物品は、肌対向面を形成する肌側シート、非肌対向面を形成する非肌側シート、及びこれら両シート間に介在された前記吸収性コアを具備しており、
 前記吸収性コアは、前記中高部とそれ以外の部分との境界を区画する中高境界溝部を有し、前記中間領域における前記中高部及び該中高境界溝部を除く領域に中高隣接部を有し、
 前記吸収性物品は、前記肌側シートと前記吸収性コアとが圧搾一体化された線状溝として、前記吸収性コアの縦方向に延びる一対の縦圧搾溝を有しており、
 前記縦圧搾溝が、前記中高部、前記中高境界溝部、前記中高隣接部を縦方向に縦断するように形成されている、前記<1>~<18>の何れか1に記載の吸収性物品。
<20>
 前記一対の縦圧搾溝の内側に横方向に延びる横圧搾溝を有する、前記<19>に記載の吸収性物品。
<21>
 前記吸収性物品は、前記中間領域の前記縦方向に沿う前記一対の縦圧搾溝の幅方向の外側に一対の第2縦圧搾溝を有する、前記<19>又は<20>に記載の吸収性物品。
<22>
 前記吸収性コアの前記第一領域及び前記第二領域には、横方向に延びる溝が配置され、該溝の坪量は、該第一領域及び該第二領域における該溝部以外の部分より吸収性コアの形成材料の坪量が低い、前記<1>~<21>の何れか1に記載の吸収性物品。
<23>
 前記吸収性コアの前記第一領域及び前記第二領域には、縦方向に延びる溝部が配置され、該溝部の坪量は、該第一領域及び該第二領域における該溝部以外の部分より吸収性コアの形成材料の坪量が低い、前記<1>~<22>の何れか1に記載の吸収性物品。
<3>
The middle-high portion includes a front-side convex portion or a rear-side convex portion whose lateral length is narrower than the maximum width portion from the middle-high central portion toward the front side or the rear side, Absorbent article according to 2>.
<4>
The middle-high part is the absorbent article according to <3>, wherein the front side convex part and the rear side convex part are included.
<5>
The front side convex portion is arranged at one front end portion in the vertical direction of the middle and high central portion, and the rear side convex portion is arranged at one rear end portion in the vertical direction of the middle and high central portion,
Each of the front-side convex portion and the rear-side convex portion is formed such that the lateral length gradually decreases from both side portions along the longitudinal direction toward the top portion located at the central portion in the lateral direction. The absorbent article as described in said <4>.
<6>
<1> to <5>, wherein the middle-high portion does not have a recess having a basis weight lower than the basis weight of the first region and the second region of the absorbent core on the skin contact surface side. The absorbent article of any one.
<7>
The middle-high portion is any one of <1> to <6>, wherein the basis weight of the first region and the basis weight of the second region in the absorbent core are higher than the basis weight. Absorbent article.
<8>
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 absorbent article according to any one of <1> to <7>, wherein the middle / high boundary groove is formed over the entire length in the lateral direction of the absorbent core.
<9>
The absorbent article according to <8>, wherein the middle / high boundary groove is formed to have a basis weight lower than a basis weight of the first region and the second region of the absorbent core.
<10>
The middle-high portion includes a middle-high central portion formed so that the maximum width portion extends to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core,
Any one of the above <1> to <9>, wherein the middle-high central portion is formed so that its height decreases from a central portion in the horizontal direction toward both side portions along the vertical direction in a cross-sectional view. Absorbent article as described in 1.
<11>
The middle-high portion includes a middle-high central portion formed so that the maximum width portion extends to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core,
Any one of the above <1> to <9>, wherein the middle-high central portion is formed so that its basis weight decreases from a central portion in the horizontal direction toward both side portions along the vertical direction in a cross-sectional view. Absorbent article as described in 1.
<12>
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 middle region, and a middle-high boundary region in the middle region excluding the middle-high portion and the middle-high boundary groove portion. Has an adjacent part,
The absorptivity according to any one of <1> to <11>, wherein a basis weight of the middle-high adjacent portion is smaller than a basis weight of the middle-high portion and larger than a basis weight of the middle-high boundary groove portion. Goods.
<13>
The middle-high adjacent portion is the absorbent article according to <12>, wherein the basis weight is the same as or smaller than the basis weight of the first region and the second region in the absorbent core.
<14>
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 middle region, and a middle-high boundary region in the middle region excluding the middle-high portion and the middle-high boundary groove portion. Has an adjacent part,
The absorbent article according to any one of <1> to <13>, wherein a thickness of the middle-high adjacent portion is larger than a thickness of the middle-high boundary groove portion and smaller than a thickness of the middle-high boundary portion.
<15>
The middle-high adjacent portion is the absorbent article according to <14>, wherein the thickness is the same as or smaller than the thickness of the first region and the second region in the absorbent core.
<16>
The absorbent article according to any one of <1> to <15>, wherein the absorbent core includes a continuous layer that is not divided over the entire surface direction.
<17>
The absorbent article according to any one of <1> to <16>, wherein a total length in the vertical direction of the middle and high portions is 25% or more and 80% or less of a total length in the vertical direction of the absorbent core.
<18>
The absorptivity according to any one of <2> to <5>, wherein an overall length in the middle direction of the middle-high portion is 20% to 80% of a longitudinal length of the middle-high portion. Goods.
<19>
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 core has a medium-high boundary groove part that defines a boundary between the medium-high part and the other part, and has a medium-high adjacent part in a region excluding the medium-high part and the medium-high boundary groove part in the intermediate region,
The absorbent article has a pair of vertical pressing grooves extending in the longitudinal direction of the absorbent core as a linear groove in which the skin side sheet and the absorbent core are integrated by pressing.
The absorbent article according to any one of <1> to <18>, wherein the vertical pressing groove is formed so as to longitudinally cut the middle-high portion, the middle-high boundary groove portion, and the middle-high adjacent portion. .
<20>
The absorbent article according to <19>, further including a lateral pressing groove extending in a lateral direction inside the pair of vertical pressing grooves.
<21>
The absorbent article according to <19> or <20>, wherein the absorbent article has a pair of second vertical pressing grooves on an outer side in a width direction of the pair of vertical pressing grooves along the vertical direction of the intermediate region. Goods.
<22>
Grooves extending in the lateral direction are disposed in the first region and the second region of the absorbent core, and the basis weight of the grooves is absorbed from portions other than the groove portions in the first region and the second region. The absorbent article according to any one of the above items <1> to <21>, wherein the basis weight of the forming material of the adhesive core is low.
<23>
Grooves extending in the longitudinal direction are disposed in the first region and the second region of the absorbent core, and the basis weight of the groove portions is absorbed by portions other than the groove portions in the first region and the second region. The absorbent article according to any one of <1> to <22>, wherein the basis weight of the forming material of the adhesive core is low.
<24>
 前記吸収性コアは一体成形により構成されている、前記<1>~<23>の何れか1に記載の吸収性物品。
<25>
 前記吸収性物品の横方向両外側に一対のウイング部を備えており、各ウイング部における縦方向に間隔を空けて配された該ウイング部の付け根どうし間に前記中間領域が存在する、前記<1>~<24>の何れか1に記載の吸収性物品。
<26>
 前記吸収性物品の前記中間領域は、前記ウイング部の付け根どうし間に亘って存在する、前記<1>~<25>の何れか1に記載の吸収性物品
<27>
 前記吸収性物品の前記中間領域の縦方向の長さは、前記ウイング部の付け根どうし間の長さと同一である、前記<1>~<26>の何れか1に記載の吸収性物品。
<28>
 前記吸収性物品は、前記第二領域の横方向後方部に後方フラップ部を有している、前記<1>~<27>の何れか1に記載の吸収性物品。
<29>
 前記吸収性物品の前後方向に沿う左右両側に、着用者側へ向かって起立可能な立体ガードを備える、前記<1>~<28>の何れか1に記載の吸収性物品。
<30>
 前記吸収性物品が全長30cm以上の生理用ナプキンである、前記<1>~<29>の何れか1に記載の吸収性物品。
<24>
The absorbent article according to any one of <1> to <23>, wherein the absorbent core is configured by integral molding.
<25>
The absorbent article includes a pair of wing portions on both lateral outer sides of the absorbent article, and the intermediate region exists between roots of the wing portions that are spaced apart in the vertical direction in each wing portion. The absorbent article according to any one of 1> to <24>.
<26>
The absorbent article <27> according to any one of <1> to <25>, wherein the intermediate region of the absorbent article exists between the roots of the wing portion.
The absorbent article according to any one of <1> to <26>, wherein the length of the intermediate region of the absorbent article in the vertical direction is the same as the length between the roots of the wing portion.
<28>
The absorbent article according to any one of <1> to <27>, wherein the absorbent article has a rear flap portion at a lateral rear portion of the second region.
<29>
The absorbent article according to any one of <1> to <28>, further comprising a three-dimensional guard that can stand toward the wearer on both left and right sides along the front-rear direction of the absorbent article.
<30>
The absorbent article according to any one of <1> to <29>, wherein the absorbent article is a sanitary napkin having a total length of 30 cm or more.
 以下、本発明を実施例を用いて更に説明するが、本発明は、斯かる実施例によって何ら制限されるものではない。 Hereinafter, the present invention will be further described with reference to examples, but the present invention is not limited to the examples.
〔実施例1〕
 図9に示す形態の吸収性コアを製造した。吸収性コア41は、パルプ繊維と吸水性ポリマーの混合積繊体として形成した。吸収性コア41は、中間領域41Mに中高部42を有し、中高部42は、吸収性コア41の全幅に亘る中高中央部421と、中高中央部421の前後端部にそれぞれ前方側凸部422及び後方側凸部423とを有している。中高部42の厚みは3.5mmであり、第一領域41Fの厚み及び第二領域41Rの厚みは2.3mmであった。中高部42の坪量は350g/m2であり、第一領域41Fの坪量及び第二領域41Rの坪量は250g/m2であった。厚み及び坪量は上述した方法により測定した。また、中高部42の縦方向Xの全長L2は、吸収性コア41の縦方向Xの全長L1の63%であった。
 次いで、図9に示す形態の吸収性コアを、ティッシュペーパーで被覆して吸収体を形成し、肌側シートと非肌側シートとの間に挟み、実施例1のナプキンとした。吸収体と肌側シートとの間は、及び吸収体と非肌側シートとの間は接着剤を介して接合した。
 肌側シート及び外層シートとしては下記のものを用いた。

 肌側シート:坪量30g/m2のエアースルー不織布
 非肌側シート:坪量25g/m2の非透湿ポリエチレン製フィルムシート
[Example 1]
An absorbent core having the form shown in FIG. 9 was produced. 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 3.5 mm, and the thickness of the first region 41F and the thickness of the second region 41R were 2.3 mm. The basis weight of the middle-high portion 42 was 350 g / m 2 , and the basis weight of the first region 41F and the basis weight of the second region 41R were 250 g / m 2 . Thickness and basic weight were measured by the method mentioned above. Further, the overall length L2 in the longitudinal direction X of the middle-high portion 42 was 63% of the overall length L1 in the longitudinal direction X of the absorbent core 41.
Next, the absorbent core having the form shown in FIG. 9 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. The absorbent body and the skin side sheet, and the absorbent body and the non-skin side sheet were joined via an adhesive.
The following were used as the skin side sheet and the outer layer sheet.

Skin-side sheet: Air-through nonwoven fabric with basis weight of 30 g / m 2 Non-skin-side sheet: Non-breathable polyethylene film sheet with basis weight of 25 g / m 2
〔比較例1〕
 図10(a)に示す形態の吸収性コア41’を用いて、生理用ナプキンを製造する以外は、実施例1のナプキンと同様にして、比較例1のナプキンを作製した。図10(a)に示す形態の吸収性コア41’は、図9に示す形態の吸収性コアに比べて、中高部42’が、前方側凸部422及び後方側凸部423を有さず、中高中央部421’のみを有している点が異なっている。中高部42’の厚み及び坪量は、実施例1のナプキンと同様であり、第一領域41F’及び第二領域41R’の厚み及び坪量は、実施例1のナプキンと同様であった。また、中高部42’の縦方向Xの全長は、吸収性コア41’の縦方向Xの全長の63%であった。
[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. In the absorbent core 41 ′ shown in FIG. 10A, the mid-high portion 42 ′ does not have the front convex portion 422 and the rear convex portion 423 compared to the absorbent core shown in FIG. 9. The only difference is that it has only the middle and high central part 421 '. The thickness and basis weight of the middle-high portion 42 ′ were the same as those of the napkin of Example 1, and the thickness and basis weight of the first region 41F ′ and the second region 41R ′ were the same as those of the napkin of Example 1. Further, the overall length in the longitudinal direction X of the middle-high portion 42 ′ was 63% of the overall length in the longitudinal direction X of the absorbent core 41 ′.
〔比較例2〕
 図10(b)に示す形態の吸収性コア41’を用いて、生理用ナプキンを製造する以外は、実施例1のナプキンと同様にして、比較例2のナプキンを作製した。図10(b)に示す形態の吸収性コア41’は、図9に示す形態の吸収性コアに比べて、中高部42’が、吸収性コア41の全幅に亘っていない中高部421Xを有している点が異なっている。中高部42’の厚み及び坪量は、実施例1のナプキンと同様であり、第一領域41F’及び第二領域41R’の厚み及び坪量は、実施例1のナプキンと同様であった。また、中高部42’の縦方向Xの全長は、吸収性コア41’の縦方向Xの全長の63%であった。
[Comparative Example 2]
A napkin of Comparative Example 2 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. 10 (b) has a middle / high part 421 </ b> X in which the middle / high part 42 ′ does not extend over the entire width of the absorbent core 41 compared to the absorbent core shown in FIG. 9. Is different. The thickness and basis weight of the middle-high portion 42 ′ were the same as those of the napkin of Example 1, and the thickness and basis weight of the first region 41F ′ and the second region 41R ′ were the same as those of the napkin of Example 1. Further, the overall length in the longitudinal direction X of the middle-high portion 42 ′ was 63% of the overall length in the longitudinal direction X of the absorbent core 41 ′.
〔比較例3〕
 図10(c)に示す形態の吸収性コア41’を用いて、生理用ナプキンを製造する以外は、実施例1のナプキンと同様にして、比較例3のナプキンを作製した。図10(c)に示す形態の吸収性コア41’は、図9に示す形態の吸収性コアに比べて、中高部42’が、吸収性コア41の全幅に亘っていない中高部421Xを有している点が異なっている。また、中高部421Xは、十字状に形成されていた。中高部42’の厚み及び坪量は、実施例1のナプキンと同様であり、第一領域41F’及び第二領域41R’の厚み及び坪量は、実施例1のナプキンと同様であった。また、中高部42’の縦方向Xの全長は、吸収性コア41’の縦方向Xの全長の63%であった。
[Comparative Example 3]
A napkin of Comparative Example 3 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. 10 (c) has a middle / high portion 421 X that does not cover the entire width of the absorbent core 41 compared to the absorbent core shown in FIG. 9. Is different. Further, the middle / high part 421X was formed in a cross shape. The thickness and basis weight of the middle-high portion 42 ′ were the same as those of the napkin of Example 1, and the thickness and basis weight of the first region 41F ′ and the second region 41R ′ were the same as those of the napkin of Example 1. Further, the overall length in the longitudinal direction X of the middle-high portion 42 ′ was 63% of the overall length in the longitudinal direction X of the absorbent core 41 ′.
〔評価〕
 以下の方法により、実施例1のナプキン及び比較例1~3のナプキンについて、剛性を評価した。
 先ず作製した実施例1のナプキン及び比較例1~3のナプキンについて、温度23℃、湿度50%の試験室に24時間保存した。その後、測定用サンプルとし、同じ環境条件にて、ハンドルオメータ法(JIS  L-1096)に準じて剛性値を測定した。ハンドルオメータとしては、大栄科学精器製作所製の型式:HOM-200を用いた。測定用サンプルを、非肌側シート側を下側に向け、その縦方向が幅10mのスロットと直角になるように試料台上に配置した。次いで、中高部の前方区域側の先端から前方区域側に10mm離れた位置から、中高部に向かって10mmの位置毎に、ペネトレーターのブレードを、200mm/minの一定速度で下降させ、深さ8mm押し込むときの指示計(荷重計)が示す最高値を読み取った。実施例1のナプキン及び比較例1~3のナプキンについて、各5枚ずつ測定し、測定結果の平均値を求めたものを図11に示す。
[Evaluation]
The rigidity of the napkin of Example 1 and the napkins of Comparative Examples 1 to 3 was evaluated by the following method.
First, the prepared napkin of Example 1 and the napkins of Comparative Examples 1 to 3 were stored in a test room at a temperature of 23 ° C. and a humidity of 50% for 24 hours. Thereafter, a measurement sample was used, and the rigidity value was measured in accordance with the handle ohm method (JIS L-1096) under the same environmental conditions. As the handle ohmmeter, model number: HOM-200 manufactured by Daiei Kagaku Seiki Seisakusho was used. The measurement sample was placed on the sample stage so that the non-skin side sheet side was directed downward and the vertical direction thereof was perpendicular to the slot having a width of 10 m. Next, the blade of the penetrator is lowered at a constant speed of 200 mm / min at a constant speed of 200 mm / min from a position 10 mm away from the front end side of the front section side of the middle high section toward the middle section, and a depth of 8 mm. The maximum value indicated by the indicator (load meter) when pushing in was read. For the napkin of Example 1 and the napkins of Comparative Examples 1 to 3, five are measured, and the average value of the measurement results is shown in FIG.
 図11に示す結果から明らかなように、実施例1のナプキンは、比較例1~3のナプキンに比べ、中高部の前方区域側の先端付近の領域において、なめらかに剛性値が上昇していることがわかった。このように、剛性が、急激に上昇する部分がないことで、実施例1のナプキンは、屈折部が形成されにくく、柔軟に変形することがわかった。このような実施例1のナプキンを使用すれば、多少ズレた状態で着用されても、身体形状への追従性に優れることで着用者に違和感を与え難く、着用者の肌との間に隙間を生じ難く、十分な吸収性能が発現できることが期待できる。 As is apparent from the results shown in FIG. 11, the rigidity value of the napkin of Example 1 is smoothly increased in the region near the front end on the front area side of the middle and high parts as compared with the napkins of Comparative Examples 1 to 3. I understood it. Thus, it was found that the napkin of Example 1 was not easily formed with a refracting part and deformed flexibly because there was no portion where the rigidity increased rapidly. If such a napkin of Example 1 is used, it is difficult to give the wearer a sense of incongruity by being excellent in conformity to the body shape even when 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.
 本発明によれば、吸収性物品が多少ズレた状態で着用されても、身体形状への追従性に優れることで着用者に違和感を与え難く、着用者の肌との間に隙間を生じ難く、十分な吸収性能が発現できる。 According to the present invention, even if the absorbent article is worn in a slightly displaced state, it is difficult to give the wearer a sense of incongruity by being excellent in conformity to the body shape, and it is difficult to create a gap between the skin of the wearer. Sufficient absorption performance can be expressed.

Claims (30)

  1.  着用者の前後方向に対応する縦方向に長い形状の吸収性コアを備え、前方区域及び後方区域を有する吸収性物品であって、
     前記吸収性コアは、前記前方区域側に位置する第一領域及び前記後方区域側に位置する第二領域との間に中間領域を有し、該中間領域には、該第一領域及び該第二領域における厚みよりも、厚みの厚い中高部を備えており、
     前記中高部は、前記吸収性コアを平面視して、該吸収性コアの前記縦方向と直交する横方向における長さが最大となる最大幅部を有し、該最大幅部での横方向の長さが、前記吸収性コアの該横方向の長さと同じである、吸収性物品。
    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. Equipped with a thick middle and high part than the thickness in the two areas,
    The middle-high portion has a maximum width portion in which the length in the lateral direction orthogonal to the longitudinal direction of the absorbent core is maximized in a plan view of the absorbent core, and the lateral direction at the maximum width portion The absorbent article has the same length as the transverse length of the absorbent core.
  2.  前記中高部は、前記最大幅部が前記吸収性コアの前記縦方向に沿う両側縁に従って前記縦方向に所定の長さに延在して形成される中高中央部を備えている請求項1に記載の吸収性物品。 The said middle-high part is equipped with the middle-high center part which the said largest width part is extended and formed in predetermined length in the said longitudinal direction according to the both-sides edge along the said longitudinal direction of the said absorptive core. The absorbent article as described.
  3.  前記中高部は、前記中高中央部から前方側又は後方側に向かって前記最大幅部よりも横方向の長さが狭くなっている前方側凸部又は後方側凸部を備えている、請求項2に記載の吸収性物品。 The middle-high portion includes a front-side convex portion or a rear-side convex portion whose lateral length is narrower than the maximum width portion from the middle-high center portion toward the front side or the rear side. 2. The absorbent article according to 2.
  4.  前記中高部は、前記前方側凸部及び前記後方側凸部を有している請求項3に記載の吸収性物品。 The absorptive article according to claim 3 in which said middle and high part has said front side convex part and said back side convex part.
  5.  前記前方側凸部は、前記中高中央部の縦方向の前端部に1個配され、前記後方側凸部は前記中高中央部の縦方向の後端部に1個配されており、
     前記前方側凸部及び前記後方側凸部は、それぞれ、縦方向に沿う両側部から横方向の中央部に位置する頂部に向かって、その横方向の長さが漸減するように形成されている請求項4に記載の吸収性物品。
    The front side convex portion is arranged at one front end portion in the vertical direction of the middle and high central portion, and the rear side convex portion is arranged at one rear end portion in the vertical direction of the middle and high central portion,
    Each of the front-side convex portion and the rear-side convex portion is formed such that the lateral length gradually decreases from both side portions along the longitudinal direction toward the top portion located at the central portion in the lateral direction. The absorbent article according to claim 4.
  6.  前記中高部は、肌当接面側に、前記吸収性コアにおける前記第一領域及び前記第二領域の坪量よりも坪量が低い凹部を有さない、請求項1~5の何れか1項に記載の吸収性物品。 The medium-high portion does not have a recess having a basis weight lower than the basis weight of the first region and the second region of the absorbent core on the skin contact surface side. Absorbent article according to item.
  7.  前記中高部は、前記吸収性コアにおける前記第一領域の坪量及び前記第二領域の坪量よりも坪量が高く形成されている請求項1~6の何れか1項に記載の吸収性物品。 The absorptivity according to any one of claims 1 to 6, wherein the middle and high portions are formed such that the basis weight of the first region and the basis weight of the second region in the absorbent core are higher. Goods.
  8.  前記吸収性コアは、前記中間領域に前記中高部と該中高部以外の部分との境界を区画する中高境界溝部を有し、
     前記中高境界溝部は、前記吸収性コアの横方向の全長に亘り形成されている、請求項1~7の何れか1項に記載の吸収性物品。
    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 absorbent article according to any one of claims 1 to 7, wherein the middle / high boundary groove is formed over the entire length in the lateral direction of the absorbent core.
  9.  前記中高境界溝部は、前記吸収性コアにおける前記第一領域及び前記第二領域の坪量よりも坪量が低く形成されている請求項8に記載の吸収性物品。 The absorbent article according to claim 8, wherein the middle and high boundary groove portions are formed to have a basis weight lower than a basis weight of the first region and the second region in the absorbent core.
  10.  前記中高部は、前記最大幅部が前記吸収性コアの前記縦方向に沿う両側縁に従って前記縦方向に所定の長さに延在して形成される中高中央部を備え、
     前記中高中央部は、断面視において、横方向の中央部から縦方向に沿う両側部に向かって、その高さが低くなるように形成されている請求項1~9の何れか1項に記載の吸収性物品。
    The middle-high portion includes a middle-high central portion formed so that the maximum width portion extends to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core,
    10. The middle-high center portion is formed so as to have a height that decreases in a cross-sectional view from a lateral center portion toward both side portions along the longitudinal direction. Absorbent articles.
  11.  前記中高部は、前記最大幅部が前記吸収性コアの前記縦方向に沿う両側縁に従って前記縦方向に所定の長さに延在して形成される中高中央部を備え、
     前記中高中央部は、断面視において、横方向の中央部から縦方向に沿う両側部に向かって、その坪量が小さくなるように形成されている請求項1~9の何れか1項に記載の吸収性物品。
    The middle-high portion includes a middle-high central portion formed so that the maximum width portion extends to a predetermined length in the longitudinal direction according to both side edges along the longitudinal direction of the absorbent core,
    10. The middle-high center portion is formed so that the basis weight thereof decreases in a cross-sectional view from a lateral center portion toward both side portions along the longitudinal direction. Absorbent articles.
  12.  前記吸収性コアは、前記中間領域に前記中高部と該中高部以外の部分との境界を区画する中高境界溝部を有し、前記中間領域における前記中高部及び該中高境界溝部を除く領域に中高隣接部を有し、
     前記中高隣接部は、その坪量が、前記中高部の坪量より小さく、且つ、前記中高境界溝部の坪量よりも大きい請求項1~11の何れか1項に記載の吸収性物品。
    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 middle region, and a middle-high boundary region in the middle region excluding the middle-high portion and the middle-high boundary groove portion. Has an adjacent part,
    The absorbent article according to any one of claims 1 to 11, wherein a basis weight of the middle-high adjacent portion is smaller than a basis weight of the middle-high portion and larger than a basis weight of the middle-high boundary groove portion.
  13.  前記中高隣接部は、その坪量が、前記吸収性コアにおける前記第一領域及び前記第二領域の坪量と、同じか小さい、請求項12に記載の吸収性物品。 The absorbent article according to claim 12, wherein the basis weight of the middle and high adjacent portions is the same as or smaller than the basis weight of the first region and the second region of the absorbent core.
  14.  前記吸収性コアは、前記中間領域に前記中高部と該中高部以外の部分との境界を区画する中高境界溝部を有し、前記中間領域における前記中高部及び該中高境界溝部を除く領域に中高隣接部を有し、
     前記中高隣接部は、その厚みが、前記中高境界溝部の厚みより大きく、且つ、前記中高部の厚みよりも小さい、請求項1~13の何れか1項に記載の吸収性物品。
    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 middle region, and a middle-high boundary region in the middle region excluding the middle-high portion and the middle-high boundary groove portion. Has an adjacent part,
    The absorbent article according to any one of claims 1 to 13, wherein the middle-high adjacent portion has a thickness larger than a thickness of the middle-high boundary groove portion and smaller than a thickness of the middle-high boundary portion.
  15.  前記中高隣接部は、その厚みが、前記吸収性コアにおける前記第一領域及び前記第二領域の厚みと、同じか小さい、請求項14に記載の吸収性物品。 The absorbent article according to claim 14, wherein the middle-high adjacent portion has a thickness that is the same as or smaller than a thickness of the first region and the second region in the absorbent core.
  16.  前記吸収性コアは、その面方向全体に亘って分断されていない連続層を備えている、請求項1~15の何れか1項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 15, wherein the absorbent core includes a continuous layer that is not divided over the entire surface direction.
  17.  前記中高部の縦方向の全長は、前記吸収性コアの縦方向の全長の25%以上80%以下である、請求項1~16の何れか1項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 16, wherein a total length in the vertical direction of the middle and high portions is 25% or more and 80% or less of a total length in the vertical direction of the absorbent core.
  18.  前記中高部における前記中高中央部の縦方向の全長は、前記中高部の縦方向の全長の20%以上80%以下である、請求項2~5の何れか1項に記載の吸収性物品。 The absorbent article according to any one of claims 2 to 5, wherein a length of the middle portion of the middle / high portion in the middle direction is 20% or more and 80% or less of a length of the middle / high portion in the longitudinal direction.
  19.  前記吸収性物品は、肌対向面を形成する肌側シート、非肌対向面を形成する非肌側シート、及びこれら両シート間に介在された前記吸収性コアを具備しており、
     前記吸収性コアは、前記中高部とそれ以外の部分との境界を区画する中高境界溝部を有し、前記中間領域における前記中高部及び該中高境界溝部を除く領域に中高隣接部を有し、
     前記吸収性物品は、前記肌側シートと前記吸収性コアとが圧搾一体化された線状溝として、前記吸収性コアの縦方向に延びる一対の縦圧搾溝を有しており、
     前記縦圧搾溝が、前記中高部、前記中高境界溝部、前記中高隣接部を縦方向に縦断するように形成されている、請求項1~18の何れか1項に記載の吸収性物品。
    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 core has a medium-high boundary groove part that defines a boundary between the medium-high part and the other part, and has a medium-high adjacent part in a region excluding the medium-high part and the medium-high boundary groove part in the intermediate region,
    The absorbent article has a pair of vertical pressing grooves extending in the longitudinal direction of the absorbent core as a linear groove in which the skin side sheet and the absorbent core are integrated by pressing.
    The absorbent article according to any one of claims 1 to 18, wherein the vertical pressing groove is formed so as to longitudinally cut the middle-high portion, the middle-high boundary groove portion, and the middle-high adjacent portion.
  20.  前記一対の縦圧搾溝の内側に横方向に延びる横圧搾溝を有する、請求項19に記載の吸収性物品。 The absorbent article according to claim 19, further comprising a lateral pressing groove extending in a lateral direction inside the pair of vertical pressing grooves.
  21.  前記吸収性物品は、前記中間領域の前記縦方向に沿う前記一対の縦圧搾溝の幅方向の外側に一対の第2縦圧搾溝を有する、請求項19又は20に記載の吸収性物品。 21. The absorbent article according to claim 19 or 20, wherein the absorbent article has a pair of second vertical pressing grooves on the outer side in the width direction of the pair of vertical pressing grooves along the vertical direction of the intermediate region.
  22.  前記吸収性コアの前記第一領域及び前記第二領域には、横方向に延びる溝が配置され、該溝の坪量は、該第一領域及び該第二領域における該溝部以外の部分より吸収性コアの形成材料の坪量が低い、請求項1~21の何れか1項に記載の吸収性物品。 Grooves extending in the lateral direction are disposed in the first region and the second region of the absorbent core, and the basis weight of the grooves is absorbed from portions other than the groove portions in the first region and the second region. The absorbent article according to any one of claims 1 to 21, wherein the basis weight of the forming material of the adhesive core is low.
  23.  前記吸収性コアの前記第一領域及び前記第二領域には、縦方向に延びる溝部が配置され、該溝部の坪量は、該第一領域及び該第二領域における該溝部以外の部分より吸収性コアの形成材料の坪量が低い、請求項1~22の何れか1項に記載の吸収性物品。 Grooves extending in the longitudinal direction are disposed in the first region and the second region of the absorbent core, and the basis weight of the groove portions is absorbed by portions other than the groove portions in the first region and the second region. The absorbent article according to any one of claims 1 to 22, wherein the basis weight of the forming material of the adhesive core is low.
  24.  前記吸収性コアは一体成形により構成されている、請求項1~23の何れか1項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 23, wherein the absorbent core is formed by integral molding.
  25.  前記吸収性物品の横方向両外側に一対のウイング部を備えており、各ウイング部における縦方向に間隔を空けて配された該ウイング部の付け根どうし間に前記中間領域が存在する、請求項1~24の何れか1項に記載の吸収性物品。 A pair of wing portions are provided on both lateral outer sides of the absorbent article, and the intermediate region exists between roots of the wing portions arranged at intervals in the vertical direction in each wing portion. 25. The absorbent article according to any one of 1 to 24.
  26.  前記吸収性物品の前記中間領域は、前記ウイング部の付け根どうし間に亘って存在する、請求項25に記載の吸収性物品。 26. The absorbent article according to claim 25, wherein the intermediate region of the absorbent article exists between the roots of the wing portion.
  27.  前記吸収性物品の前記中間領域の縦方向の長さは、前記ウイング部の付け根どうし間の長さと同一である、請求項25又は26に記載の吸収性物品。 27. The absorbent article according to claim 25 or 26, wherein a length in the longitudinal direction of the intermediate region of the absorbent article is the same as a length between roots of the wing portion.
  28.  前記吸収性物品は、前記第二領域の横方向後方部に後方フラップ部を有している、請求項1~27の何れか1項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 27, wherein the absorbent article has a rear flap portion in a lateral rear portion of the second region.
  29.  前記吸収性物品の前後方向に沿う左右両側に、着用者側へ向かって起立可能な立体ガードを備える、請求項1~28の何れか1項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 28, comprising a three-dimensional guard that can stand toward the wearer side on both right and left sides along the front-rear direction of the absorbent article.
  30.  前記吸収性物品が全長30cm以上の生理用ナプキンである、請求項1~29の何れか1項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 29, wherein the absorbent article is a sanitary napkin having a total length of 30 cm or more.
PCT/JP2016/064994 2016-05-20 2016-05-20 Absorbent article WO2017199419A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SG11201804895WA SG11201804895WA (en) 2016-05-20 2016-05-20 Absorbent article
JP2017540283A JP6221020B1 (en) 2016-05-20 2016-05-20 Absorbent articles
PCT/JP2016/064994 WO2017199419A1 (en) 2016-05-20 2016-05-20 Absorbent article
MYPI2017001112A MY185821A (en) 2016-05-20 2016-05-20 Absorbent article
CN201680008037.6A CN107847365A (en) 2016-05-20 2016-05-20 Absorbent commodity
TW106116409A TWI737731B (en) 2016-05-20 2017-05-18 Absorbent articles

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PCT/JP2016/064994 WO2017199419A1 (en) 2016-05-20 2016-05-20 Absorbent article

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CN (1) CN107847365A (en)
MY (1) MY185821A (en)
SG (1) SG11201804895WA (en)
TW (1) TWI737731B (en)
WO (1) WO2017199419A1 (en)

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JP2020006140A (en) * 2019-03-04 2020-01-16 花王株式会社 Absorbent article

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JP7125310B2 (en) * 2018-09-04 2022-08-24 花王株式会社 Pad type absorbent article

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JP2020006140A (en) * 2019-03-04 2020-01-16 花王株式会社 Absorbent article

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JP6221020B1 (en) 2017-10-25
SG11201804895WA (en) 2018-07-30
JPWO2017199419A1 (en) 2018-06-07
CN107847365A (en) 2018-03-27
TWI737731B (en) 2021-09-01
MY185821A (en) 2021-06-10
TW201801698A (en) 2018-01-16

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