WO2020090178A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2020090178A1
WO2020090178A1 PCT/JP2019/030597 JP2019030597W WO2020090178A1 WO 2020090178 A1 WO2020090178 A1 WO 2020090178A1 JP 2019030597 W JP2019030597 W JP 2019030597W WO 2020090178 A1 WO2020090178 A1 WO 2020090178A1
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WO
WIPO (PCT)
Prior art keywords
absorbent article
region
sheet
sap
present
Prior art date
Application number
PCT/JP2019/030597
Other languages
English (en)
Japanese (ja)
Inventor
翔士 ▲高▼阪
山本　純子
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 CN201980052325.5A priority Critical patent/CN112533569B/zh
Publication of WO2020090178A1 publication Critical patent/WO2020090178A1/fr

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    • 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
    • A61F13/45—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 shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • 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
    • A61F13/531—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 having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad

Definitions

  • the present invention relates to absorbent articles.
  • Absorbent article comprising a liquid-permeable topsheet containing a water-retaining fiber such as cotton, a liquid-impermeable backsheet, and an absorber arranged between the topsheet and the backsheet.
  • a liquid-permeable topsheet containing a water-retaining fiber such as cotton
  • a liquid-impermeable backsheet arranged between the topsheet and the backsheet.
  • an absorber arranged between the topsheet and the backsheet.
  • the absorbent body by providing the absorbent body with a SAP sheet containing a sheet material and a superabsorbent polymer (SAP) retained by the sheet material, moisture can be quickly removed from the top sheet, and thereby, the fluffing of the top sheet is prevented. It is thought that it can be limited.
  • SAP superabsorbent polymer
  • the SAP sheet when the SAP sheet is provided on the absorbent body, the flexibility of the absorbent body may be deteriorated, and the absorbent article may not be easily deformed. As a result, the followability of the absorbent article to the movement of the wearer's skin may be reduced. In this case, a specific part of the top sheet may strongly hit the wearer's skin. At this location, there is a possibility that the wearer's skin will be greatly rubbed or rubbed, and large fuzz may occur.
  • a liquid-permeable topsheet containing water-retaining fibers, Liquid impermeable back sheet, An absorber arranged between the top sheet and the back sheet, An absorbent article comprising:
  • the absorbent body includes a SAP sheet including a sheet material and a superabsorbent polymer held by the sheet material,
  • the SAP sheet includes a plurality of second regions divided by a first region,
  • the basis weight of the superabsorbent polymer in the first region is less than the basis weight of the superabsorbent polymer in the second region, Absorbent article.
  • the first region serves as the bending start point, and the absorbent body or absorbent article can be more easily deformed.
  • the absorbent article can be more surely kept fitted to the wearer's skin, and fluffing of the top sheet is limited. Therefore, the wearer's feeling of discomfort is more surely restricted while maintaining excellent touch.
  • the sheet material includes a pair of layers that are superposed on each other and bonded to each other by a heat seal portion, The heat seal part is provided in the first region, The absorbent article according to configuration 1 or 2. According to the configuration 3, the heat-sealed portion serves as the bending start point, and the absorber can be deformed more easily.
  • the basis weight of the superabsorbent polymer in the portion in the second region located more inside in the width direction of the absorbent article is within the second region located more outside in the width direction of the absorbent article.
  • the configuration 6 when the superabsorbent polymer of the absorbent body absorbs water, the portion of the absorbent body located on the inner side in the width direction of the absorbent article can largely expand in the thickness direction of the absorbent article. As a result, the absorbent article can be more surely kept fitted to the wearer's skin.
  • the top sheet includes a skin-side layer and a non-skin-side layer that are laminated on each other, and a water-retaining fiber content rate of the skin-side layer is higher than a water-retaining fiber content rate of the non-skin side layer.
  • the absorbent article according to any one of 1. According to the configuration 9, while the excellent skin feel is maintained by the skin side layer, the liquid is easily directed to the absorber by the non-skin side layer.
  • FIG. 3 is a schematic plan view of an absorbent article according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of an absorbent article according to an embodiment of the present invention, taken along the longitudinal centerline CL of FIG. 1.
  • FIG. 3 is a schematic cross-sectional view of a top sheet according to an embodiment of the present invention.
  • FIG. 3 is a schematic plan view of an absorber according to an embodiment of the present invention.
  • FIG. 5 is a schematic cross-sectional view of the absorbent article according to the embodiment of the present invention, taken along line VV in FIG. 4.
  • FIG. 7 is a schematic plan view of a component for manufacturing the absorber of the embodiment according to the present invention.
  • FIG. 6 is a schematic plan view showing an imaginary line for disposing a heat seal portion in the absorber of the embodiment according to the present invention. It is a schematic plan view of the absorber of another embodiment according to the present invention. It is a schematic plan view of the absorber of another embodiment by the present invention.
  • FIG. 1 shows a schematic plan view of an absorbent article 1 according to an embodiment of the present invention
  • FIG. 2 shows a schematic sectional view taken along line CL-CL in FIG.
  • the absorbent article 1 according to the embodiment of the present invention is composed of a light incontinence pad.
  • the absorbent article 1 is composed of, for example, a panty liner, a sanitary napkin, a disposable diaper, or the like.
  • L, W, T indicate the length direction, the width direction, and the thickness direction of the absorbent article 1, respectively.
  • CL indicates the lengthwise L center line
  • CW indicates the widthwise W centerline.
  • the absorbent article 1 according to the embodiment of the present invention is symmetrical with respect to each of the widthwise centerlines CW.
  • the side closer to the lengthwise centerline CL is called the inner side
  • the side farther from the lengthwise centerline CL is called the outer side.
  • the side closer to the width direction center line CW is referred to as the inner side
  • the side farther from the width direction center line CW is referred to as the outer side.
  • an absorbent article 1 includes a liquid-permeable topsheet 2, a liquid-impermeable backsheet 3, and a topsheet 2, which include water-retaining fibers.
  • the absorber 4 arranged between the back sheet 3 and the back sheet 3.
  • the top sheet 2, the back sheet 3, and the absorber 4 are laminated on each other in the thickness direction T.
  • the top sheet 2 and the back sheet 3 have substantially the same size in the length direction L and the width direction W.
  • the absorber 4 is smaller than the topsheet 2 and the backsheet 3 in the length direction L and the width direction W.
  • the absorbent article 1 according to the embodiment of the present invention further includes an adhesive portion 8 provided on the backsheet 3 on the side opposite to the topsheet 2, and a separator 9 that covers the adhesive portion 8.
  • the adhesive portion 8 of the embodiment according to the present invention is formed of a plurality of adhesive tapes that are separated from each other in the width direction W and extend in the length direction L, respectively. The adhesive portion 8 is used to fix the absorbent article 1 to the wearer's underwear or the like.
  • the dotted line indicates the adhesive layer. That is, in the embodiment shown in FIG. 2, an adhesive layer is provided between the top sheet 2 and the absorbent body 4, and between the absorbent body 4 and the back sheet 3.
  • adhesives include hot melt adhesives.
  • the absorbent article 1 further includes a heat-sealing portion 11 for joining at least the topsheet 2 and the backsheet 3 to each other by heat-sealing.
  • the heat-sealing portion 11 is continuously provided along the peripheral edge of the absorbent article 1 outside the absorbent body 4 in the length direction L and the width direction W. As a result, the absorber 4 is held between the top sheet 2 and the back sheet 3.
  • the topsheet 2 of the embodiment according to the present invention includes a skin side layer 2a and a non-skin side layer 2b that are laminated in the thickness direction T.
  • the skin side layer 2a can contact the wearer's skin.
  • the non-skin side layer 2b does not contact the wearer's skin.
  • the skin side layer 2a and the non-skin side layer 2b of the embodiment according to the present invention are each formed of a sheet-shaped nonwoven fabric.
  • the skin side layer 2a and the non-skin side layer 2b of the embodiment according to the present invention are joined to each other by entanglement. Examples of the entanglement include a spunlace method, a water jet method, and an air through method.
  • the top sheet 2 is formed of two layers.
  • the topsheet 2 is formed of one layer or three or more layers.
  • the skin-side layer 2a of the embodiment according to the present invention does not contain the thermoplastic resin fiber but contains the water retention fiber.
  • the skin side layer 2a includes water-retaining fibers and thermoplastic resin fibers.
  • the non-skin side layer 2b of the embodiment according to the present invention includes a water retention fiber and a thermoplastic resin fiber.
  • the non-skin side layer 2b contains thermoplastic resin fibers without water-holding fibers.
  • the water-retaining fiber has a property of absorbing and retaining water.
  • thermoplastic resin fiber has a property that it is difficult to be compatible with water or it is difficult to retain water, for example, a property that a contact angle with ion-exchanged water (example: specific resistance value 10 M ⁇ ⁇ cm) is about 80 ° to 100 °. Have.
  • Examples of components of the water-retaining fiber of the embodiment according to the present invention include cellulosic fibers.
  • cellulosic fibers include natural cellulosic fibers, regenerated cellulosic fibers, purified cellulosic fibers and semi-synthetic cellulosic fibers.
  • natural cellulose fibers include vegetable fibers.
  • Examples of plant fibers include seed hair fibers, bark fibers, vein fibers, and fruit fibers.
  • Examples of seed hair fibers include cotton.
  • Examples of dust fibers include hemp.
  • Examples of vein fibers include Manila hemp.
  • fruit fibers include palm. Examples of cotton include hirsutum varieties cotton, barbadense varieties cotton, arboreum varieties cotton and helbachemae varieties cotton.
  • Examples of hirsutum cotton include upland cotton.
  • examples of cotton include organic cotton, pre-organic cotton (trademark), and non-organic cotton.
  • Organic cotton means cotton that has been certified by GOTS (Global Organic Textile Standard).
  • Examples of regenerated cellulose fibers include rayon.
  • Examples of rayon include viscose rayon obtained from viscose, polynosic, modal, and copper ammonia rayon (also referred to as "cupra") obtained from a solution of cellulose in a copper ammonia salt.
  • the purified cellulose fiber As an example of the purified cellulose fiber, lyocell, specifically pulp, is dissolved in an aqueous solution of N-methylmorpholine N-oxide to prepare a spinning dope (dope), which is then added to a dilute solution of N-methylmorpholine N-oxide. It includes those extruded into fibers.
  • Purified cellulose is commercially available, for example, as TENCEL (trademark).
  • semi-synthetic cellulose fibers include semi-synthetic cellulose.
  • semi-synthetic cellulose include acetate fibers.
  • Examples of acetate fibers include triacetate and diacetate. Among them, from the viewpoint of water retention and touch, natural cellulose fibers are preferable, cotton is more preferable, and hirsutum type cotton is further preferable.
  • thermoplastic resin fiber examples include olefin resin, polyester resin, and polyamide resin.
  • olefin resin examples include polyethylene (PE), polypropylene (PP), and ethylene-vinyl acetate copolymer (EVA).
  • polyester resin examples include polyethylene terephthalate (PET) and polylactic acid (PLA).
  • polyamide resins examples include polyamide resins such as 6-nylon.
  • structure of the thermoplastic resin fiber include a composite fiber, a hollow type fiber, a modified cross-section type fiber, a three-dimensional crimped fiber, and a split fiber.
  • composite fibers examples include core-sheath fibers, side-by-side fibers, island / sea fibers.
  • modified cross-section fibers include flat cross-section fibers, Y-shaped cross-section fibers, and C-shaped cross-section fibers.
  • three-dimensional crimped fibers include latent crimped fibers and actual crimped fibers.
  • the water retention fiber content ratio of the skin side layer 2a is higher than the water retention fiber content ratio of the non-skin side layer 2b.
  • the water-holding fiber content ratio of the skin side layer 2a is 100% by mass.
  • the water-retaining fiber content of a layer is represented by the mass of the water-retaining fiber contained in the layer with respect to the total mass of the layer.
  • the water-retaining fiber of the skin side layer 2a preferably contains organic cotton.
  • the skin side layer 2a preferably contains 100% by mass of the water retaining fiber.
  • the water-retaining fibers of the non-skin side layer 2b preferably include non-organic cotton.
  • the thermoplastic resin fiber of the non-skin side layer 2b preferably contains a plurality of components, more preferably PP and PE or PP and PET.
  • the non-skin side layer 2b preferably contains 20 to 80% by mass of water-retaining fibers and 80 to 20% by mass of thermoplastic resin fibers. 20-40 gsm is preferable and, as for the basis weight of the non-skin side layer 2b, 25-35 gsm is more preferable.
  • the ratio of the basis weight of the skin side layer 2a to the basis weight of the non-skin side layer 2b is preferably 1: 1 to 1: 1.3, and more preferably 1: 1.15 to 1: 1.25.
  • the thickness (T dimension in the thickness direction) of the top sheet 2 is preferably 0.2 to 1.5 mm, more preferably 0.2 to 1.0 mm.
  • the skin side layer 2a of the top sheet 2 according to the embodiment of the present invention contains 100% by mass of organic cotton, and its basis weight is 10 gsm.
  • the non-skin side layer 2b of the embodiment according to the present invention contains 60% by mass of non-organic cotton, 40% by mass of PE and PP, and has a basis weight of 20 gsm.
  • the thickness of the topsheet 2 of the embodiment according to the present invention is 0.3 to 0.5 mm.
  • the back sheet 3 of the embodiment according to the present invention is formed of a liquid impermeable nonwoven fabric, a synthetic resin film, a composite sheet of a nonwoven fabric and a synthetic resin film, or an SMS nonwoven fabric.
  • FIG. 4 is a schematic plan view of the absorbent body 4 according to the embodiment of the present invention
  • FIG. 5 is a schematic cross-sectional view taken along line VV of FIG.
  • the absorber 4 according to the embodiment of the present invention includes the SAP sheet 4a.
  • the SAP sheet 4a according to the embodiment of the present invention includes a sheet material 40 and a super absorbent polymer (SAP) 44 held by the sheet material 40.
  • the sheet material 40 of the embodiment according to the present invention includes a first layer 41 and a second layer 42 which are superposed on each other and bonded to each other by a heat seal portion 43.
  • the first layer 41 and the second layer 42 of the embodiment according to the present invention each include a thermoplastic fiber.
  • the SAP 44 of the embodiment according to the present invention is in the form of particles and is mainly retained between the first layer 41 and the second layer 42.
  • the absorbent body 4 of the embodiment according to the present invention includes SAP without including pulp.
  • the absorbent body 4 comprises pulp and SAP.
  • the length direction, the width direction, and the thickness direction of the absorber 4 or the SAP sheet 4a are the length direction L, the width direction W, and the thickness direction T of the absorbent article 1.
  • the dotted line indicates the adhesive layer. That is, in the embodiment shown in FIG. 5, the adhesive layer is formed on the surface of the first layer 41 facing the second layer 42 and on the surface of the second layer 42 facing the first layer 41. Is provided. Examples of adhesives include hot melt adhesives.
  • the absorber 4 or the SAP sheet 4a according to the embodiment of the present invention includes a plurality of second regions R2 partitioned or separated by the first region R1.
  • each of the second regions R2 is surrounded by the first region R1.
  • the first region R1 of the embodiment according to the present invention has a lattice shape. Therefore, apart from the peripheral portion of the absorber 4, the second region R2 has a quadrangular or rhombic shape.
  • the sizes of the second regions R2 are the same (including substantially the same) except for the peripheral portion of the absorber 4.
  • the first region R1 is also provided in a portion along the peripheral edge of the absorber 4.
  • the SAP basis weight in the first region R1 (eg, gsm) is smaller than the SAP basis weight in the second region R2.
  • the SAP basis weight in the first region R1 of the embodiment according to the present invention is zero (including substantially zero).
  • the SAP basis weight in the second region R2 is preferably 100 gsm or more.
  • the difference between the SAP grammage in the first region R1 and the SAP grammage in the second region R2 is preferably 100 gsm or more.
  • the heat-sealing portion 43 of the embodiment according to the present invention applies pressure and heat to the first layer 41 and the second layer 42 that are superposed on each other in the thickness direction T of the absorbent article 1 or the absorbent body 4. It is formed by heat-sealing the first layer 41 and the second layer 42 to each other. As a result, the first layer 41 and the second layer 42 are bonded to each other, and the SAP is securely held by the SAP sheet 4a.
  • the SAP sheet 4a according to the embodiment of the present invention is formed as follows, for example. That is, the adhesive is applied on the first surface of the first strip that is transported in the transport direction. SAP is then applied on the first surface of the first strip, and negative pressure is applied to the second surface of the first strip opposite the first surface. In an embodiment according to the invention, a negative pressure is applied to the second surface via plate 50 as shown in FIG.
  • the plate 50 according to the embodiment of the present invention includes a masking portion 51 having a lattice shape and an opening 52 other than the masking portion 51.
  • negative pressure acts on a region of the second surface of the first strip facing the opening 52, and a region of the first surface on the opposite side of the region has a relatively large SAP basis weight, That is, the second region R2 is formed.
  • the negative pressure hardly acts on the region of the second surface of the first strip facing the masking portion 51, and the SAP basis weight is on the region of the first surface on the opposite side of the region.
  • a relatively small area, that is, the first area R1 is formed.
  • the second strip is superposed on the first surface of the first strip.
  • An adhesive is applied in advance to the surface of the second strip that faces the first strip. Next, for example, pressure and heat are applied from the second strip toward the first strip, and the heat seal portion 43 is formed.
  • first band-shaped body and the second band-shaped body are bonded to each other, and SAP is held between the first band-shaped body and the second band-shaped body.
  • first strip and the second strip are cut into individual SAP sheets 4a.
  • the first strip and the second strip correspond to the first layer 41 and the second layer 42 of the SAP sheet 4a, respectively.
  • MD indicates the transport direction
  • CD indicates the direction orthogonal to the transport direction MD.
  • the transport direction MD and the orthogonal direction CD correspond to the length direction L and the width direction W of the absorbent article 1 to the absorbent body 4, respectively.
  • the area inside the width direction W of the absorber 4 or the SAP sheet 4a is referred to as the inner area 4i
  • the area outside the width direction W of the absorber 4 or the SAP sheet 4a is referred to as the outer area 4o
  • a larger amount of SAP is applied to the portion of the first strip corresponding to the inner area 4i of the SAP sheet 4a, and the portion of the first strip corresponding to the outer area 4o of the SAP sheet 4a.
  • the amount of SAP applied to is set to be smaller.
  • a larger amount of the adhesive is applied to the first strip-shaped portion and the second strip-shaped portion corresponding to the inner area 4i of the SAP sheet 4a, which corresponds to the outer area 4o of the SAP sheet 4a.
  • the amount of adhesive applied to the first strip-shaped portion and the second strip-shaped portion is set to be smaller. Specifically, for example, the adhesive is applied entirely, that is, without a gap, to each of the first strip-shaped portion and the second strip-shaped portion corresponding to the inner region 4i.
  • the adhesive is partially separated from the first strip-shaped portion and the second strip-shaped portion corresponding to the outer region 4o, that is, in the orthogonal direction CD (width direction W), for example. Applied in the form of multiple lines.
  • the SAP basis weight in the portion of the second region R2 located in the inner section 4i is larger than the SAP basis weight in the portion of the second region R2 located in the outer section 4o. large.
  • the SAP basis weight of the portion Pi is larger than the SAP basis weight of the portion Po.
  • the SAP basis weight in the portion in the second region R2 located on the inner side in the width direction W is equal to the SAP basis weight on the outer side in the width direction W. It is larger than the SAP grammage in the region R2.
  • the distribution of the SAP basis weight of the second region R2 in the width direction W is non-uniform.
  • the SAP basis weight of the second region R2 has a uniform distribution in the width direction W (including substantially uniform).
  • the distribution of the SAP basis weight of the first region R1 in the width direction W is uniform (including substantially uniform).
  • the distribution of the SAP grammage of the first region R1 in the length direction L and the distribution of the SAP grammage of the second region R2 in the length direction L are both uniform ( (Including substantially uniform).
  • the heat seal part 43 of the embodiment according to the present invention is provided in the first region R1.
  • the heat seal portion 43 of the embodiment according to the present invention is not provided in the second region R2.
  • the heat seal portion 43 according to the embodiment of the present invention is provided along an imaginary line extending in the first region R1.
  • the imaginary line of the embodiment according to the present invention includes a plurality of imaginary lines 45 that are spaced apart from each other in the length direction L and each form a zigzag.
  • the imaginary lines 45 are spaced apart from each other in the lengthwise direction L and have a wavy shape.
  • the heat seal portion 43 is discontinuous in the length direction of the imaginary line 45.
  • the first region R1 includes a portion where the heat seal portion 43 is provided and a portion where the heat seal portion 43 is not provided.
  • the heat seal part 43 of the embodiment according to the present invention is partially provided in the first region R1.
  • the area of the second region R2 located on the outer side in the width direction W is smaller than the area of the second region R2 located on the inner side in the width direction W.
  • the area of the second region R2o is smaller than the area of the second region R2i.
  • the area of the outer second region R2o is preferably 75% or less of the area of the inner second region R2i.
  • a liquid such as urine is first absorbed by the skin-side layer 2a of the top sheet 2, and then reaches the absorber 4 via the non-skin-side layer 2b of the top sheet 2, and is absorbed or Retained.
  • the non-skin side layer 2b containing the thermoplastic resin fiber is provided on the non-skin side of the skin side layer 2a of the top sheet 2, the liquid absorbed in the skin side layer 2a is favorably formed. 2b.
  • the dryness of the skin side layer 2a is improved. Therefore, the fuzz of the top sheet 2 is further restricted.
  • the non-skin side layer 2b of the top sheet 2 and the back sheet 3 are joined to each other by the heat-sealing portion 11. Since the non-skin side layer 2b contains the thermoplastic resin fiber, the bondability between the top sheet 2 and the back sheet 3 is further enhanced.
  • the absorber 4 contains SAP, the liquid absorbed by the absorber 4 is restricted from returning to the topsheet 2. Therefore, the dryness of the top sheet 2 is improved, and the fluffing of the top sheet 2 is further restricted.
  • the SAP basis weight in the first region R1 is smaller than the SAP basis weight in the second region R2.
  • the first region R1 (including the boundary with the second region R2) is bent more easily. Therefore, the first region R1 serves as a folding start point, and the absorber 4 or the absorbent article 1 can be more easily deformed.
  • the absorbent article 1 can continue to be more surely fitted to the wearer's skin. Therefore, the concentration of the pressure acting on the top sheet 2 is limited, and the contact with the wearer's skin becomes more uniform. As a result, friction or friction with respect to the top sheet 2 is reduced, so that the fluffing of the top sheet 2 is further restricted. Therefore, the wearer's feeling of discomfort is more surely restricted while maintaining excellent touch.
  • the absorbent body 4 or the absorbent article 1 can be more easily folded in the first region R1.
  • the heat seal portion 43 is provided in the first region R1.
  • the heat-sealing portion 43 serves as a bending start point, and the absorber 4 or the absorbent article 1 can be deformed more easily.
  • the heat seal portion 43 is partially provided in the first region R1, it is limited that the SAP expansion due to water absorption is suppressed by the heat seal portion 43.
  • the SAP expansion in this case includes one or both of the expansion in the thickness direction T and the expansion in the length direction L and the width direction W. Further, the diffusion of the liquid is restricted from being hindered by the heat seal portion 43. Therefore, the liquid is absorbed more quickly.
  • the absorber 4 since the heat-sealing portions 43 are provided along the plurality of imaginary lines 45 that are zigzag-shaped or wavy while being separated from each other in the lengthwise direction L, the absorber 4 is more complicated. It can be transformed into a shape. As a result, the absorbent article 1 can continue to be more surely fitted to the wearer's skin.
  • the absorber 4 can be deformed along a plurality of directions, and thus the absorber 4 can be deformed into a more complicated shape. Becomes Therefore, also from this point of view, the absorbent article can continue to be more surely fitted to the wearer's skin.
  • the absorbent article 1 is used such that the left side portion of the absorbent body 4 shown in FIG. 4 is located on the front side of the wearer and the right side portion is located on the back side of the wearer. As a result, the absorber 4 or the absorbent article 1 bent along the first region R1 can be more surely fitted to the unevenness of the wearer's skin.
  • the SAP basis weight in the portion in the second region R2 located on the inner side in the width direction W is in the portion in the second region R2 located on the outer side in the width direction W. Since it is larger than the SAP basis weight, when the SAP of the absorbent body 4 absorbs water, the portion of the absorbent body 4 located on the inner side in the width direction W can largely expand in the thickness direction T. As a result, the absorbent article 1 can continue to be more surely fitted to the wearer's skin.
  • the SAP basis weight of the portion in the second region R2 located on the outer side in the width direction W is smaller than the SAP basis weight of the portion in the second region R2 located on the inner side in the width direction W.
  • the portion of the absorbent body 4 located on the outer side in the width direction W can expand to a smaller extent in the thickness direction T.
  • the expansion of the SAP prevents the absorbent article 1 from being difficult to follow the movement of the wearer.
  • the area of the second region R2 located on the outer side in the width direction W is smaller than the area of the second region R2 located on the inner side in the width direction W.
  • the absorbent article 1 can be deformed into a more complicated shape. Therefore, it becomes possible for the top sheet 2 to follow the wearer's movements reliably, and the absorbent article 1 can continue to be more surely fitted to the wearer's skin.
  • FIG. 9 shows a schematic plan view of an absorber 4 according to another embodiment of the present invention.
  • the area of the second region RWo located on the outer side in the width direction W is smaller than the area of the second region R2i located on the inner side in the width direction W. Therefore, also in this embodiment, the absorbent article 1 can be deformed into a more complicated shape on the outer side in the width direction W.
  • the shape of the second region RWo located on the outer side in the width direction W and the shape of the second region R2i located on the inner side in the width direction W are similar ( Including substantially similar).
  • the first region R1 on the inner side in the width direction W and the first region R1 on the outer side in the width direction W can be formed in the same direction, so that the absorber 4 or the SAP sheet 4a can be formed more easily. It will be easier.
  • An absorbent article according to another embodiment (not shown) according to the present invention further includes a second sheet arranged between the top sheet 1 and the absorbent body 4.
  • the second sheet is formed of, for example, a sheet-shaped non-woven fabric.
  • the second sheet includes the thermoplastic resin fibers without including the water retaining fibers in one example, and includes the water retaining fibers and the thermoplastic resin fibers in another example.
  • the absorbent article according to yet another embodiment (not shown) according to the present invention further includes a tissue disposed between the absorbent body 4 and the backsheet 3.
  • the tissue is formed of, for example, a sheet-shaped nonwoven fabric.
  • the tissue contains thermoplastic resin fibers without containing water-holding fibers in one example, and contains water-holding fibers and thermoplastic resin fibers in another example.
  • the absorbent article according to still another embodiment (not shown) according to the present invention further includes another absorbent body arranged between the absorbent body 4 and the back sheet 3. This alternative absorbent comprises pulp without SAP in one example, and SAP and pulp in another example.
  • the SAP sheet 4a is folded along one or a plurality of folding lines extending in the length direction L and between the top sheet 2 and the back sheet 3. Is located in. By doing so, a space is formed between the folded portions of the SAP sheet 4a, and the liquid can be retained in this space. Note that, in the above-described embodiment according to the present invention, the SAP sheet 4a is not folded.

Landscapes

  • 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)

Abstract

L'invention concerne un article absorbant, dans le but de réduire de manière plus fiable, pour le porteur, la sensation de désagrément tout en conservant un excellent toucher de la peau, pourvu de : une feuille supérieure perméable aux liquides comprenant des fibres à rétention d'eau ; une feuille arrière imperméable aux liquides ; et un corps absorbant (4) disposé entre la feuille supérieure et la feuille arrière. Le corps absorbant est pourvu d'une feuille de SAP (4a) qui comprend : des éléments de feuille (41, 42) ; et un polymère hautement absorbant (44) contenu dans les matériaux en feuille. La feuille de SAP est pourvue d'une pluralité de deuxièmes régions (R2) divisées par des premières régions (R1). Le poids de base du polymère hautement absorbant dans les premières régions est plus petit que le poids de base du polymère hautement absorbant dans les deuxièmes régions.
PCT/JP2019/030597 2018-10-31 2019-08-02 Article absorbant WO2020090178A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980052325.5A CN112533569B (zh) 2018-10-31 2019-08-02 吸收性物品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018205599A JP6937733B2 (ja) 2018-10-31 2018-10-31 吸収性物品
JP2018-205599 2018-10-31

Publications (1)

Publication Number Publication Date
WO2020090178A1 true WO2020090178A1 (fr) 2020-05-07

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Country Link
JP (1) JP6937733B2 (fr)
CN (1) CN112533569B (fr)
WO (1) WO2020090178A1 (fr)

Citations (5)

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JPH0226555A (ja) * 1988-07-17 1990-01-29 Zuikou:Kk 体液吸収体
JP2012179182A (ja) * 2011-02-28 2012-09-20 Unicharm Corp 吸収性物品
JP2017086349A (ja) * 2015-11-06 2017-05-25 小林製薬株式会社 体液吸収用当て材
JP2017108796A (ja) * 2015-12-15 2017-06-22 花王株式会社 吸収性物品
JP6382384B1 (ja) * 2017-03-29 2018-08-29 大王製紙株式会社 吸収性物品

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US5505719A (en) * 1994-06-30 1996-04-09 Mcneil-Ppc, Inc. Multilayered absorbent structures
JP3875007B2 (ja) * 2000-09-01 2007-01-31 ユニ・チャーム株式会社 連続フィラメントを有する表面層を用いた吸収性物品およびその製造方法
JP2010115368A (ja) * 2008-11-13 2010-05-27 Kao Corp 吸収性物品の個包装体
JP5530693B2 (ja) * 2009-09-30 2014-06-25 大王製紙株式会社 吸収性物品
JP5780731B2 (ja) * 2010-09-30 2015-09-16 ユニ・チャーム株式会社 使い捨ておむつ
JP5847999B2 (ja) * 2010-09-30 2016-01-27 ユニ・チャーム株式会社 パンツ型オムツ
JP5679778B2 (ja) * 2010-11-19 2015-03-04 ユニ・チャーム株式会社 吸収性物品
US9308132B2 (en) * 2012-08-02 2016-04-12 Zuiko Corporation Method and device for manufacturing composite sheet
JP5938440B2 (ja) * 2014-06-13 2016-06-22 大王製紙株式会社 吸収性物品

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH0226555A (ja) * 1988-07-17 1990-01-29 Zuikou:Kk 体液吸収体
JP2012179182A (ja) * 2011-02-28 2012-09-20 Unicharm Corp 吸収性物品
JP2017086349A (ja) * 2015-11-06 2017-05-25 小林製薬株式会社 体液吸収用当て材
JP2017108796A (ja) * 2015-12-15 2017-06-22 花王株式会社 吸収性物品
JP6382384B1 (ja) * 2017-03-29 2018-08-29 大王製紙株式会社 吸収性物品

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JP6937733B2 (ja) 2021-09-22
CN112533569A (zh) 2021-03-19
JP2020069120A (ja) 2020-05-07

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