WO2016052007A1 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

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Publication number
WO2016052007A1
WO2016052007A1 PCT/JP2015/073853 JP2015073853W WO2016052007A1 WO 2016052007 A1 WO2016052007 A1 WO 2016052007A1 JP 2015073853 W JP2015073853 W JP 2015073853W WO 2016052007 A1 WO2016052007 A1 WO 2016052007A1
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WO
WIPO (PCT)
Prior art keywords
curved portion
absorbent article
region
absorbent
absorber
Prior art date
Application number
PCT/JP2015/073853
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
西谷　和也
英之 木下
Original Assignee
ユニ・チャーム株式会社
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 ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN201580053263.1A priority Critical patent/CN106794081B/zh
Publication of WO2016052007A1 publication Critical patent/WO2016052007A1/ja

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means

Definitions

  • the present invention relates to absorbent articles such as sanitary napkins.
  • Patent Document 1 discloses an absorbent article for night that prevents back leakage.
  • the absorbent article of Patent Document 1 has an excretory part opposing part disposed opposite to the liquid excretory part of the wearer, and a rear part disposed closer to the back than the excretory part opposing part, and absorption in the rear part A plurality of high density portions and low density portions extending in the width direction are formed in the body.
  • the absorbent article of Patent Document 1 when the body fluid flows backward, the high density portion with a relatively high density holds the body fluid, and the low density portion with a relatively low density is deformed flexibly to suppress the back leakage Do.
  • the above-mentioned absorbent articles generally have a tacky area coated with a pressure-sensitive adhesive for fastening to underwear.
  • the adhesive area is provided substantially in the entire longitudinal direction of the absorbent article.
  • the absorbent article When substantially the whole area in the front-rear direction of the absorbent article is fixed to the underwear, the absorbent article also follows and deforms when the underwear is deformed according to the deformation of the body when worn.
  • the bulge of the buttocks is crushed.
  • the absorbent article may be separated from the wearer's body or an unintended wrinkle may be generated, resulting in the occurrence of back leakage.
  • This invention is made in view of the above-mentioned subject, and an object of the present invention is to provide an absorptive article which can control back leak in the state where a wearer slept on back.
  • the absorbent article (absorbent article 1) has a longitudinal direction (longitudinal direction L) and a width direction (width direction W) orthogonal to each other, and an absorbent material is laminated
  • An absorbent body (absorbent body 30) having an absorbent core, a skin sheet (skin surface sheet 10) located on the skin-facing surface side of the absorbent body, and a non-skin-facing surface side of the absorbent body
  • an adhesive region (adhesive region 60) to which a pressure-sensitive adhesive for stopping is applied (adhesion region 60), which is adjacent to the discharge opening opposite region on the rear side of the discharge opening opposite region and in the width direction
  • a first curved portion (first curved portion 41) which extends and
  • FIG. Fig.4 (a) FIG.4 (b) and FIG.4 (c) are schematic diagrams for demonstrating the mounting state of the absorbent article shown in FIG. It is a top view of the absorptive article concerning a modification.
  • FIG. 1 is a plan view of the absorbent article
  • FIG. 2 is a rear view of the absorbent article
  • FIG. 3 is a cross-sectional view taken along line AA shown in FIG.
  • the absorbent article 1 according to the present embodiment is a sanitary napkin for night.
  • the absorbent article 1 has an anteroposterior direction L extending to the front side (ventral side) and a posterior side (back side) of the wearer, a width direction W orthogonal to the anteroposterior direction L, a skin opposing surface side T1 of the wearer and no skin And a thickness direction T extending to the facing surface side T2.
  • the absorbent article 1 has an absorbent body 30 having an absorbent core on which an absorbent material is laminated, a skin sheet 10 positioned on the skin facing surface side T1 with respect to the absorbent body 30, and a non-skin facing surface side T2 with respect to the absorbent body 30.
  • the non-skin sheet 20 located in The skin sheet 10 covers the liquid-permeable top sheet 11 covering at least the widthwise center of the absorber 30, and the outer edge (outer end in the width direction) of the topsheet 11 and extends outward in the width direction.
  • the non-skin surface sheet 20 is a liquid impermeable sheet.
  • the surface sheet 11 is a liquid-permeable sheet which transmits liquid such as body fluid.
  • the surface sheet 11 covers at least the surface of the absorber 30.
  • the top sheet 11 is not particularly limited as long as it is a sheet-like material having a liquid-permeable structure, such as non-woven fabric, woven fabric, perforated plastic sheet, mesh sheet, and the like. As materials for woven and non-woven fabrics, either natural fibers or chemical fibers can be used.
  • the side sheet 12 can be selected from the same material as the top sheet 11. However, in order to prevent the menstrual blood from flowing over the side sheet 12 and flowing outward of the absorbent article 1, the side sheet 12 preferably has hydrophobicity or water repellency.
  • the side seat 12 is disposed on the outer edge of the main body 2 described later, the wing 3 and the hip flap 4.
  • the non-skin sheet 20 has a length substantially equal to the length of the skin sheet 10.
  • the non-skin sheet 20 may be made of a polyethylene sheet, a laminated non-woven fabric mainly made of polypropylene or the like, an air-permeable resin film, a sheet having an air-permeable resin film joined to a non-woven fabric such as spunbond or spunlace. it can.
  • the absorbent body 30 has an absorbent core 31 on which an absorbent material is laminated, and a core wrap 32 covering the absorbent core 31.
  • the absorbent material can be, for example, hydrophilic fiber, pulp, and SAP.
  • the absorbent article 1 has a main body 2, wings 3 and hip flaps 4.
  • the main body 2 is located at the center of the width direction W of the absorbent article 1 and extends in the front-rear direction L.
  • the wing 3 and the hip flap 4 extend outside the lateral edge 2E of the main body 2 in the width direction W.
  • the outer edge 2E of the main body 2 coincides with the outer edge 30E of the absorber 30.
  • the main body 2 includes a skin sheet 10, a non-skin sheet 20, and an absorber 30. More specifically, the main body 2 includes the surface sheet 11, a part of the side sheet 12, the non-skin surface sheet 20, and the absorber 30.
  • the wing 3 has a side sheet 12 and a non-skin surface sheet 20.
  • the wing 3 is configured to be able to be folded back to the non-skin sheet 20 side, and is folded back to the non-skin facing surface side of the crotch portion of the undergarment when in use.
  • the hip flap 4 is located behind the wing 3.
  • the hip flap 4 is configured to be disposed on the skin facing surface side of the underwear without being folded back to the non-skin facing surface side of the underwear at the time of use.
  • the inner edge 12E of the side sheet 12 is folded back to the outside in the width direction W along the longitudinal direction L.
  • An elastic member 91 that is expanded and contracted in the front-rear direction L is disposed between the folded back side sheets 12.
  • the inner edge 12E of the side sheet 12 is not joined to the top sheet 11.
  • the inner edge 12E of the side sheet 12 and the stretchable member 91 constitute a standing leakproof cuff.
  • the stretchable member 91 is disposed across the first curved portion 41 and the second curved portion 42 described later in the front-rear direction L. More specifically, the front end edge 91F of the stretchable member 91 is positioned forward of the first curved portion 41, and the back edge 91R of the stretchable member 91 is positioned rearward of the second curved portion 42.
  • a non-skin facing surface of the non-skin surface sheet 20 is provided with an adhesive region 60 to which an adhesive for stopping the absorbent article on the undergarment S is applied.
  • the adhesive area 60 includes a first main adhesive area 61 and a second main adhesive area 62 disposed in the main body 2, a wing adhesive area 63 disposed in the wing 3, and a hip flap adhesive area disposed in the hip flap 4. And 64.
  • the first main adhesive area 61 is spaced apart from the second main adhesive area 62 in the front-rear direction, and is disposed in front of the second main adhesive area 62.
  • first main adhesive area 61 located on the front side of the first curved section 41 and the second main adhesive area 62 located rearward of the second curved section 42 have a length in the front-rear direction of the width direction It has a plurality of adhesive regions longer than the length.
  • the adhesive area in the first main adhesive area 61 and the adhesive area in the second main adhesive area 62 are spaced apart in the width direction.
  • the adhesive area 60 is covered by the release sheet 65 in the state before use.
  • the release sheet 65 prevents the adhesive from deteriorating before use.
  • the release sheet 65 is peeled off by the wearer at the time of use.
  • the absorbent article 1 is provided with a first curved portion 41 and a second curved portion 42.
  • the first curved portion 41 and the second curved portion 42 are located on the rear side of the center of the wing 3 in the front-rear direction and on the front side of the rear end edge of the absorbent core 31.
  • the first curved portion 41 and the second curved portion 42 extend in the width direction W, and are configured such that the absorbent article 1 can be bent in the thickness direction T.
  • the rear end edge of the absorbent core and the rear end edge of the absorber substantially coincide with each other.
  • the first curved portion 41 is adjacent to the excretion port facing area R1 on the rear side of the excretion port facing area R1.
  • the second curved portion 42 is located on the rear side of the first curved portion 41.
  • the absorbent article 1 has an excrement opening facing area R1 facing the wearer's excretory opening, a rear area R2 adjacent to the second curved section 42 at the rear of the second curved section 42, and a first curved section in the front and rear direction L And an intermediate region R3 located between the second curved portion 42 and the second curved portion 42.
  • the discharge port facing area R ⁇ b> 1 is an area from the front end edge of the middle high portion 33 to the first curved portion 41.
  • the rear area R2 is an area from the rear end 30R of the absorber 30 to the second curved portion 42.
  • the middle region R3 is a region between the first curved portion 41 and the second curved portion 42.
  • the basis weight of the absorbent material in the middle region R3 is lower than the basis weight of the absorbent material in the outlet facing region R1 and lower than the basis weight of the absorbent material in the rear region R2.
  • region R3 should just be an area
  • a fabric weight may be a region of 0, and design basis weight is 0, It may be a region where the absorbent material mixed from the mouth facing region R1 or the like is disposed.
  • the first curved portion 41 is a boundary at which the rigidity changes.
  • the rigidity of the region on the front side of the first curved portion 41 and the rigidity of the region on the rear side of the first curved portion 41 are different. More specifically, the basis weight of the absorbent material in the region on the front side of the first curved portion 41 is higher than the basis weight of the absorbent material in the region on the rear side of the first curved portion 41. Therefore, the rigidity on the front side of the first curved portion 41 is higher than the rigidity on the rear side of the first curved portion 41.
  • the second curved portion 42 is located rearward of the first curved portion 41.
  • the second curved portion 42 is a boundary at which the rigidity changes.
  • the rigidity of the region on the front side of the second curved portion 42 and the rigidity of the region on the rear side of the second curved portion 42 are different. More specifically, the basis weight of the absorbent material in the region on the front side of the second curved portion 42 is lower than the basis weight of the absorbent material in the region on the rear side of the second curved portion 42.
  • the rigidity on the front side of the second curved portion 42 is lower than the rigidity on the rear side of the second curved portion 42.
  • the first curved portion 41, the second curved portion 42, and the middle region R3 do not overlap the adhesive region 60 in the thickness direction T.
  • the first curved portion 41, the second curved portion 42, and the middle region R3 are provided in a non-adhesive region where the adhesive region is not disposed in a plan view.
  • the first main body adhesive area 61 is disposed forward of the first curved portion 41, and the second main body adhesive area 62 is disposed rearward of the second curved portion 42.
  • the first main body adhesive area 61 overlaps the excretion port facing area R1 in the thickness direction.
  • the rear end edge 61R of the first main body adhesive area 61 is located forward of the first curved portion 41, and the front end edge 62F of the second main body adhesive area 62 is located rearward of the second curved portion 42.
  • the length of the middle region R3 in the front-rear direction L is longer than the thickness of the absorber 30 in the portion adjacent to the first curved portion 41 of the excretion opening facing region R1.
  • the length in the front-rear direction of the middle region R3 is greater than the thickness of the absorber 30 in the portion adjacent to the first curved portion 41. It may be configured to be longer, and may be configured to be shorter than the thickness of the other portion (for example, the central portion in the front-rear direction) of the discharge port facing area.
  • the length of the front-back direction of middle region R3 is 10 mm or more and 50 mm or less.
  • the length in the front-rear direction at the center in the width direction of the middle region R3 may be 10 mm or more and 50 mm or less. More preferably, the length in the front-rear direction of the middle region R3 is 10 mm or more and 30 mm or less.
  • the distance L1 between the center 41WC in the width direction of the first curved portion 41 and the center in the front-rear direction of the discharge port facing area R1 be 25 mm or more.
  • the distance L1 between the center 41WC in the width direction of the first curved portion 41 and the center in the front-rear direction of the discharge opening facing area R1 is preferably 80 mm or less.
  • the distance between the center in the width direction of the front end edge of the first curved portion 41 and the center in the front-rear direction of the discharge opening facing area is 25 mm. It may be 80 mm or less.
  • the first curved portion 41 and the second curved portion 42 are convexly curved rearward as viewed from above. More specifically, the center of the first curved portion 41 in the width direction is located rearward of the outer edge of the first curved portion 41. The center in the width direction of the first curved portion 41 is convex toward the rear. The center of the second curved portion 42 in the width direction is located rearward of the outer edge of the second curved portion 42. The center in the width direction of the second curved portion 42 is convex toward the rear.
  • the distance between the first curved portion 41 and the second curved portion 42 in the front-rear direction may be constant or may be changed.
  • the outer edge 41 E of the first curved portion 41 and the outer edge 42 E of the second curved portion 42 are located at the outer edge of the absorbent core 31. That is, the first curved portion 41 and the second curved portion 42 are formed over the entire width of the absorbent core.
  • the absorbent core 31 is divided in the front-rear direction L by the first curved portion 41 and the second curved portion 42.
  • the outer edge of the absorbent core 31 and the outer edge of the absorber 30 substantially coincide with each other. Therefore, in the drawing, the outer edge 41E of the first curved portion 41 and the outer edge 42E of the second curved portion 42 are shown to coincide with the outer edge 30E of the absorber 30.
  • the absorber 30 has a mid-high portion 33 located inward in the width direction than the outer edge 30E of the absorber 30.
  • the middle high portion 33 is located in the excretion opening facing area R1, and is located inside the outer edge 30E of the absorber 30 of the excretion opening facing area R1 in the width direction. In FIG. 1, the middle and high portions 33 are shown shaded.
  • the thickness of the middle high portion 33 is thicker than the thickness of the outer edge 30E of the absorber 30 in the excretion opening facing region R1.
  • the basis weight of the absorbent material of the middle and high portion 33 is higher than the basis weight of the absorbent material of the outer edge 30E of the absorber 30 in the outlet facing region R1.
  • the middle and high portion 33 is located on the rear side in the excretion opening facing area R ⁇ b> 1 and is adjacent to the first curved portion 41.
  • the rear end edge of the middle high portion 33 coincides with the first curved portion 41.
  • the length of the middle high portion 33 in the front-rear direction is 95 mm.
  • the front end edge of the middle high portion 33 is positioned 95 mm forward from the rear end edge of the middle high portion 33.
  • the center 33 LC in the front-rear direction of the middle high portion 33 be the center in the front-rear direction of the region disposed opposite to the discharge port. It is preferable that the center 33LC of the middle high portion 33 in the front-rear direction coincides with the center of the wing in the front-rear direction.
  • the center 33 LC in the front-rear direction of the middle and high portion 33 corresponds to a place where the length in the width direction is the shortest in the crotch portion of the undergarment.
  • the absorber of middle and high part has 2 layers of absorption layers, and absorbers other than middle and high part have absorption layers of only 1 layer.
  • the absorbent body in the middle and upper portions may have an auxiliary sheet for drawing in the body fluid, and the absorbers in the middle and upper portions may not have the auxiliary sheet.
  • a rear surface 33 RS of the middle high portion 33 extending in the thickness direction T from the rear end edge 33 R of the middle high portion 33
  • the angle ⁇ is larger than the angle ⁇ between the front surface 33 FS of the middle high portion 33 extending in the thickness direction T from the front end edge 33 F of the middle high portion 33 and the non-skin opposing surface of the middle high portion 33.
  • the angle ⁇ is an angle formed by the rear surface 33RS of the middle high portion 33 and the non-skin facing surface of the middle high portion 33 extending forward from the rear end edge 33R of the middle high portion 33.
  • the angle ⁇ is an angle formed by the front surface 33 FS of the middle high portion 33 and the non-skin facing surface of the middle high portion 33 extending rearward from the front end edge 33 F of the middle high portion 33.
  • the thickness of the absorber in the present specification shall be performed by the following measurement method.
  • the absorbent article 1 When the absorbent article 1 is enclosed in a package or the like, it is removed from the package, and in this state, a sample which is left for 12 hours in an atmosphere of 20 ° C. ⁇ 2 ° C. and relative humidity 60% ⁇ 5% RH is used.
  • the measurement position is at the center in the product width direction of the absorber.
  • the absorbent article is measured not as a shrunken state but as a stretched state of the elastic member of the absorbent article.
  • parts other than an absorber such as a skin surface sheet other than an absorber, and a non-skin surface sheet, are removed.
  • a dial gauge PEACOCK manufactured by Ozaki Mfg. Co., Ltd. is used, a 10 mm diameter sample is adopted as a measuring element, and a sample of 30 mm ⁇ 30 mm in size is prepared, and the thickness of the sample is measured.
  • the measuring device is adjusted so that the measurement pressure on the specimen is 3 g / cm 2 .
  • the above-mentioned measurement was performed on 10 samples in each state, and the average value was taken as the length.
  • the measurement of the “area weight and density of the absorber” in the present specification shall be performed by the following measurement method.
  • the absorbent article 1 When the absorbent article 1 is enclosed in a package or the like, it is removed from the package, and in this state, a sample which is left for 12 hours in an atmosphere of 20 ° C. ⁇ 2 ° C. and relative humidity 60% ⁇ 5% RH is used.
  • the package In the absorbent article wrapped by the package, the package is opened, and the folded absorbent article is developed to measure the thickness and area of the portion for measuring the fabric weight and density. Subsequently, the part which measures a fabric weight and a density is cut out from an absorbent article, and the weight of the cut out part is measured. Subsequently, parts other than an absorber, such as a top sheet and a back sheet, are removed from the cut out part, and the weight of an absorber is measured. The basis weight is calculated based on the weight of the absorber and the area of the portion where the basis weight and density are to be measured. The density is calculated based on the basis weight and thickness.
  • the measurement of the "length" in this specification shall be performed by the following measuring methods.
  • the absorbent article 1 When the absorbent article 1 is enclosed in a package or the like, it is removed from the package, and in this state, a sample which is left for 12 hours in an atmosphere of 20 ° C. ⁇ 2 ° C. and relative humidity 60% ⁇ 5% RH is used.
  • the length of this state of the measurement target site is measured along the measurement target site.
  • the above-mentioned measurement was performed on 10 samples in each state, and the average value was taken as the length.
  • the measurement of "the angle of the middle high part of an absorber" in this specification shall be performed by the following measuring methods.
  • the package is opened, the folded absorbent article is developed, and a photograph is taken from the side of the absorbent article, and the angles of ⁇ and ⁇ shown in FIG. Measure with a protractor.
  • FIG. 4 is a cross-sectional view based on the cross section AA of FIG. 1 in a state where the absorbent article 1 is worn by the wearer.
  • FIG. 4 (a) shows a state in which the wearer wearing the absorbent article 1 stands.
  • the excretion opening facing area R1 of the absorbent article 1 is fixed to the crotch portion of the undergarment (the part facing the crotch area of the wearer) via the first main body adhesive area 61.
  • the rear area R2 of the absorbent article 1 is fixed to the rear part of the crotch part of the undergarment (the part facing the buttocks of the wearer) via the second main body adhesive area 62. With the wearer standing up, the wearer's buttocks are in a inflated condition.
  • FIG.4 (b) is the state which rotated the cross-sectional view shown to Fig.4 (a) 90 degree
  • the line LB which shows bedding in figure 4 (b) is illustrated.
  • the area where the bedding line LB and the body overlap is an area where the body is pressed by the bedding and the body deforms in a lying state.
  • FIG.4 (c) has shown the state which the wearer's body which slept back was pressed and deformed by bedding.
  • the region overlapping the body and the bedding line in FIG. 4B is deformed. More specifically, the bulge of the buttocks of the wearer is crushed, and a part of the buttocks of the wearer is flat. The collapsed part of the buttocks moves to the crotch side and bulges from the base of the leg to the tip of the leg.
  • the second curved portion 42 is disposed at the end on the buttock side of the crushed portion of the buttock, and the first curved portion 41 is disposed at the crotch-side end of the crushed portion of the buttock. Therefore, the middle region R3 of the absorbent article is deformed along the bulging portion of the buttocks and disposed along the squeezed portion of the buttocks.
  • the excretion opening facing area is an area facing the wearer's excretion opening. Behind the wing 3, a first curved portion 41 and a second curved portion 42 are provided. The deformation starting point of the first curved portion 41 and the deformation starting point of the second curved portion 42 are formed behind the wearer's excretion opening. Therefore, the absorbent article 1 is flexibly deformed along the deformation of the buttocks when the wearer in the sleeping state is deformed by the body pressure.
  • the adhesion region 60 does not overlap the first curved portion 41, the second curved portion 42, and the middle region R3 in the thickness direction T.
  • the portion (the portion provided with the adhesive region) of the absorbent article 1 that is fixed to the underwear tends to deform following the underwear. For example, when the first curved portion 41, the second curved portion 42, and the middle region R3 are worn in the undergarment through the adhesive area, if the body is crushed while lying on the back, the undergarment follows the undergarment and the absorbent article Is deformed. The absorbent article may follow the undergarment and cause an unintended deformation, resulting in a gap between the wearer and the absorbent article.
  • first curved portion 41, the second curved portion 42, and the middle region R3 are not stopped by the undergarment, they can be freely deformed. Therefore, even if the excretion opening facing area R1 and the rear area R2 are deformed together with the underwear, the force transmitted from the underwear can be divided at the intermediate area R3, and the deformation of the wearer's body can be absorbed by the intermediate area R3.
  • an intermediate region R3 having a relatively low basis weight of the absorbent material is provided between the first curved portion 41 and the second curved portion 42.
  • the middle region R3 is easily deformed flexibly because the basis weight of the absorbent material is low.
  • the intermediate region R3 absorbs the deformation of the buttocks, making it easy to keep the wearer facing the excretion opening facing area R1 and the back area R2.
  • the discharge port facing area R1 and the rear area R2 are divided by the middle area R3, and the propagation of force from the discharge port facing area R1 to the rear area R2 is suppressed.
  • a plurality of adhesive regions extending in the front-rear direction L are provided at intervals in the width direction on each of the front side of the first curved portion 41 and the rear side of the second curved portion 42.
  • the first main adhesive area 61 and the second main adhesive area 62 have a plurality of adhesive areas whose length in the front-rear direction L is longer than the length in the width direction W, and the adhesive areas have a width Spaced in the direction.
  • the length of the middle region R3 in the front-rear direction L is 10 mm or more.
  • the length of the middle region in the front-rear direction is less than 10 mm, the swollen portion of the buttocks may not be sufficiently absorbed.
  • the length of the middle region R3 in the front-rear direction is 10 mm or more, the deformation of the buttocks can be effectively absorbed.
  • the length in the front-rear direction L of the middle region R3 is 50 mm or less.
  • the length in the front-rear direction L of the middle region R3 is 50 mm or less.
  • the distance L1 between the center 41WC in the width direction W of the first curved portion 41 and the center in the front-rear direction L of the discharge opening facing area R1 is 25 mm or more and 80 mm or less.
  • the crotch-side deformation starting point at the buttocks is often located 25 mm or more behind the center of the discharge port facing area R1 in the front-rear direction L. Therefore, if the distance L1 between the center 41WC in the width direction W of the first curved portion 41 and the center in the front-rear direction L of the excretion opening facing area R1 is 25 mm or more, the first curved portion 41 is the deformation starting point on the crotch side of the buttocks.
  • an intermediate region R3 is located.
  • the distance L1 between the center 41WC in the width direction W of the first curved portion 41 and the center in the front-rear direction L of the excretion opening facing area R1 exceeds 80 mm, the buttocks are most expanded and the body pressure of the buttocks is most applied
  • the first curved portion 41 or the middle area is located, which may cause a sense of discomfort.
  • the first curved portion 41 and the second curved portion 42 are convexly curved rearward as viewed from above.
  • the portion which is convexly curved toward the rear bulges in a convex shape toward the rear with the undergarment at the time of supination, and is pushed out in a direction away from the body.
  • the first curved portion 41, the second curved portion 42, and the middle region R3 can absorb the deformation at the time of reclining. Therefore, the excretion opening facing area R1 and the rear area R2 are maintained in a shape that follows the roundness of the body, and the entire absorbent article is disposed along the roundness of the body.
  • the middle and high portion 33 is adjacent to the first curved portion 41 in the excretion opening facing area R1.
  • the thickness of the middle high portion 33 is thicker than the thickness of the region other than the middle high portion of the absorber 30.
  • the angle ⁇ between the rear surface 33RS of the middle high portion 33 and the non-skin facing surface of the middle high portion 33 is larger than the angle ⁇ between the front surface 33FS of the middle high portion 33 and the non skin facing surface of the middle high portion 33.
  • the absorber is the non-skin facing surface than when the angle between the side of the absorber and the non-skin facing surface of the absorber is small. It is easy to bend from the beginning. For example, when the angle of the front surface of the middle high portion 33 is large, the folding starting point is formed on the front surface of the middle high portion 33, and the fit of the front surface of the middle high portion 33 may be reduced.
  • the angle between the front surface of the middle high portion 33 and the non-skin facing surface is relatively small, the front surface of the middle high portion 33 is not easily broken, and the fit of the front surface of the middle high portion 33 can be maintained.
  • the angle between the rear surface of the middle high portion 33 and the non-skin facing surface is relatively large, the folding starting point is easily formed on the rear surface of the middle high portion 33.
  • the stretchable member 91 is disposed across the first curved portion 41 and the second curved portion 42 in the front-rear direction L.
  • the contraction of the stretchable member 91 makes it possible to bring the excretion opening facing area R1 on the front side of the first curved portion 41 and the rear area R2 on the rear side of the second curved portion 42 closer to each other. Therefore, even if wrinkles are generated in the intermediate region R3 due to the deformation of the first curved portion 41 or the like, the wrinkles can be moved.
  • the outer edge 41 E of the first curved portion 41 and the outer edge 42 E of the second curved portion 42 are located at the outer edge of the absorbent core 31.
  • the entire area in the width direction of the absorbent core 31 is easily deformed starting from the first curved portion 41 and the second curved portion 42.
  • the excretion opening facing area R1 and the rear area R2 are divided in the front-rear direction L, it is possible to suppress propagation of one deformation state to the other.
  • the length in the front-rear direction L of the middle region R3 is longer than the thickness of the absorber 30 in the portion adjacent to the first curved portion 41 of the excretion opening facing region R1.
  • the deformation of the buttocks is absorbed by the intermediate region R3, and a step that absorbs the deformation of the buttocks is formed in the rear of the discharge port facing area R1.
  • the front side of the middle region R3 can be disposed to face the wearer's excretory opening, and the rear side of the middle region R3 can be disposed to face the buttocks of the wearer.
  • the gap between the absorbent article and the body can be reduced, and back leakage can be suppressed.
  • Absorbent article 1A concerning a modification does not have wing 3 and a leakproof cuff.
  • a pressing portion 80 is formed in the absorbent article 1A according to the modification.
  • the shape of the 1st curved part 41, the 2nd curved part 42, and middle region R3 differs in the absorbent article 1A which concerns on a modification, and the absorbent article 1 of embodiment.
  • Absorbent article 1A concerning a modification has compression part 80 which compressed at least 30 in the thickness direction.
  • the squeezing unit 80 has a first squeezing unit 81 disposed in the discharge port facing area R1 and a second squeezing unit 82 disposed in the rear area R2.
  • the first squeezed portion 81 is formed along the outer edge of the middle high portion 33.
  • the second pressing portion 82 is formed in the rear portion 34.
  • the first squeezing portion 81 includes a pair of first front and rear squeezing portions 81L extending in the front and rear direction, and a first width squeezing portion 81W located forward of the first front and rear squeezing portion 81L and extending in the width direction.
  • the first front and rear pressing portions 81L are located outside in the width direction than the center in the width direction of the excretion opening facing area R1.
  • the first front and rear compressed portion 81L may be formed to be inclined with respect to a straight line along the front and rear direction L, and is formed by the straight line along the front and rear direction L and the first front and rear compressed portion 81L.
  • the angle (sharp angle side) is 45 degrees or less.
  • the first width compressed portion 81W may be formed to be inclined with respect to the straight line along the width direction W, and the angle formed by the straight line along the width direction W and the first width compressed portion 81W It is assumed that (the acute angle side) is less than 45 degrees.
  • the middle and high portion 33 is surrounded by the first width pressing portion 81W, the pair of first front and rear pressing portions 81L, and the first curved portion 41.
  • the pair of first front and rear pressing portions 81 ⁇ / b> L are disposed along the outer edge of the middle high portion 33. Since the pressing portion 80 surrounds the middle and high portion 33, the bulge of the middle and high portion 33 is easily maintained, and the middle and high portion 33 is fitted by the wearer's excretion opening.
  • the first curved portion 41 and the second curved portion 42 have a linear shape along the width direction. Further, the outer edge 41E of the first curved portion 41 and the outer edge 42E of the second curved portion 42 are positioned more outward in the width direction than the first front and rear compressed portion 81L. As in the modification shown in FIG. 5, in the configuration in which the position in the width direction of the first front and rear squeezing portion 81L is changed, at least the rear end edge of the first front and rear squeezing portion 81L (first curved portion 41 and The portion closest to the second curved portion 42) may be located outside the first front and rear compressed portions 81L in the width direction.
  • the excretory-port facing area R1 ahead of the first curved portion 41 and the rear area R2 rearward of the second curved portion 42 be reliably divided. .
  • the excretion opening facing area R1 and the first curved portion 41 are sandwiched by the legs of the wearer, enter the width, and swell on the skin facing surface side.
  • the absorbent article 1 fits on the body.
  • the second curved portion 42 and the rear area R2 maintain a flat shape to achieve both fit and comfort.
  • the width of the outer edge of the first curved portion 41 is narrower than that of the first front and rear compressed portion, it interlocks with the movement on the front side such as the excretory opening facing area, and wrinkles near the deformation starting point (mainly the first curved portion 41). As a result, it becomes difficult to obtain the division effect between the discharge opening facing area and the rear area.
  • the outer edge 41 E of the first curved portion 41 and the outer edge 42 E of the second curved portion 42 are positioned outward of the compressed portion 80 in the width direction, the middle high portion 33 extends outward of the compressed portion 80 in the width direction.
  • the deformation starting point by the first curved portion 41 and the second curved portion 42 can be formed in the area extending to the end. Therefore, the width direction whole region of a middle high part can be changed easily, and the division effect of excretory opening opposite area R1 and back area R2 can be acquired.
  • the absorbent core 31 is disposed on the outer side in the width direction of the first curved portion 41, the outer side in the width direction of the intermediate region R3, and the outer side in the width direction of the second curved portion 42. Therefore, the absorbent core according to the modification is not divided in the front-rear direction by the first curved portion 41 and the second curved portion 42. For example, when the absorbent core is divided in the front-rear direction by the first curved portion 41 and the second curved portion 42, the first curved portion 41 and the second curved portion 42 are deformed as starting points in an unmounted state, and unintended wrinkles It may occur.
  • the absorbent core is not divided in the front-rear direction by the first curved portion 41 and the second curved portion 42, deformation of the first curved portion 41 and the second curved portion 42 as a starting point in the state before mounting is suppressed. It is possible to suppress the occurrence of unintended wrinkles.
  • the absorbent article of the present embodiment is a sanitary napkin for night, but may be a sanitary napkin for daytime as another embodiment. Also, the sanitary napkin may not have a hip flap.
  • Table 1 shows the comparison evaluation result of the length of the middle region.
  • the absorbent articles of Examples 1 to 4 and the absorbent articles of Comparative Examples 1 to 3 were compared to evaluate the maintenance of fit and the anxiety about the absorbability by appearance.
  • the absorbent articles of Examples 1 to 4 and the absorbent articles of Comparative examples 1 to 3 differ in the length in the front-rear direction of the middle region R3, but the other configurations are the same.
  • the test of comparative evaluation was conducted by 20 women using a napkin. In the evaluation test, the implementer visually identified and used the target sample, and asked the following questions.
  • the ratio of the number of persons who answered that "can be maintained” to the question 1 is 65% or more, and the sensory evaluation was good and was evaluated as ⁇ . Moreover, the ratio of the number of persons who answered that "can be maintained” to question 1 is less than 65%, and the sensory evaluation was not good, and was evaluated as x.
  • the length in the front-rear direction of the intermediate region is 10 to 50 mm, and the results of the evaluation for the maintenance of the fit and the evaluation for anxiety about the absorbability are all good. I was able to get it. From the results, it was found that the length in the front-rear direction of the intermediate region is preferably 10 mm or more and 50 mm or less. More specifically, it has been found that when the length of the intermediate region in the front-rear direction is 10 mm or more, good results can be obtained for the fit. Moreover, it turned out that the anxiety about absorption can be suppressed because the length of an intermediate
  • the amount of protrusion of the crushed part of the buttocks of the wearer's buttocks lying on the back was measured on the crotch side.
  • the amount of extension is the crotch end (P1 in FIG. 4 (c)) of the collapsed part of the buttocks of the wearer in a state of lying on his back, and the leg end of the extension of the buttocks (FIG. The distance between P2) and.
  • the pushing amount of 5 test persons was measured. The measurement results are shown in Table 2.
  • the amount of protrusion of the buttocks was 10 mm to 30 mm. Therefore, when the length in the front-rear direction of the intermediate region is 10 mm or more, the bulge from the crotch end of the crushed part of the buttocks of the wearer to the protruding leg end of the buttocks can be covered I understand.
  • the absorbent article which can suppress a back leak in the state which the wearer slept back can be provided.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2015/073853 2014-10-01 2015-08-25 吸収性物品 WO2016052007A1 (ja)

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JPH01111002A (ja) * 1987-08-27 1989-04-27 Personal Prod Co 横チャンネルを有する翼体つきナプキン
JP2001095846A (ja) * 1999-09-30 2001-04-10 Daio Paper Corp 中高部及びエンボスを有する生理用ナプキン
JP2009153735A (ja) * 2007-12-27 2009-07-16 Kao Corp 吸収性物品の個装体
JP2011244859A (ja) * 2010-05-24 2011-12-08 Livedo Corporation おむつ
JP2011244864A (ja) * 2010-05-24 2011-12-08 Livedo Corporation 吸収性物品
JP2013236683A (ja) * 2012-05-11 2013-11-28 Livedo Corporation 吸収性物品包装体

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Publication number Priority date Publication date Assignee Title
JP3748002B2 (ja) * 1998-12-25 2006-02-22 花王株式会社 吸収性物品
JP4401309B2 (ja) * 2005-03-03 2010-01-20 花王株式会社 吸収性物品
CN101732136B (zh) * 2008-11-13 2014-07-30 花王株式会社 吸收性物品的单个包装体
JP2010115368A (ja) * 2008-11-13 2010-05-27 Kao Corp 吸収性物品の個包装体
JP5543847B2 (ja) * 2010-05-31 2014-07-09 ユニ・チャーム株式会社 吸収性物品
JP5800520B2 (ja) * 2010-09-16 2015-10-28 ユニ・チャーム株式会社 体液吸収性物品

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
JPH01111002A (ja) * 1987-08-27 1989-04-27 Personal Prod Co 横チャンネルを有する翼体つきナプキン
JP2001095846A (ja) * 1999-09-30 2001-04-10 Daio Paper Corp 中高部及びエンボスを有する生理用ナプキン
JP2009153735A (ja) * 2007-12-27 2009-07-16 Kao Corp 吸収性物品の個装体
JP2011244859A (ja) * 2010-05-24 2011-12-08 Livedo Corporation おむつ
JP2011244864A (ja) * 2010-05-24 2011-12-08 Livedo Corporation 吸収性物品
JP2013236683A (ja) * 2012-05-11 2013-11-28 Livedo Corporation 吸収性物品包装体

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CN106794081A (zh) 2017-05-31

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