WO2016002314A1 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

Info

Publication number
WO2016002314A1
WO2016002314A1 PCT/JP2015/061942 JP2015061942W WO2016002314A1 WO 2016002314 A1 WO2016002314 A1 WO 2016002314A1 JP 2015061942 W JP2015061942 W JP 2015061942W WO 2016002314 A1 WO2016002314 A1 WO 2016002314A1
Authority
WO
WIPO (PCT)
Prior art keywords
vertical axis
sheet
liquid
slits
absorbent article
Prior art date
Application number
PCT/JP2015/061942
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
貴志 野本
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
Publication of WO2016002314A1 publication Critical patent/WO2016002314A1/ja

Links

Images

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
    • 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
    • A61F13/474—Sanitary towels, incontinence pads or napkins adjustable
    • 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

  • This disclosure relates to absorbent articles such as sanitary napkins, urine absorbing pads, and panty liners.
  • Patent Document 1 discloses a liquid-permeable surface layer located on the skin facing surface side, a back surface layer located on the non-skin facing surface side, and a liquid absorbing layer having extensibility interposed between both sheets.
  • An absorbent article is disclosed.
  • the surface layer and the back surface layer are composed of a stretchable sheet member and an elastic member fixed in a contracted state, and a plurality of layers formed in the liquid absorbing layer.
  • the slits of the liquid-absorbing layer extend obliquely from both side edges of the liquid-absorbing layer and are spaced apart from each other in the length direction, or extend straight from the both-side edges of the liquid-absorbing layer in the width direction, and alternate between left and right in the vertical direction. Therefore, the slit is opened by extending it in the length direction, and the liquid absorbing layer is extended at least in the vertical direction. Therefore, the whole absorbent article including the liquid absorbing layer can be extended in the longitudinal direction so as to follow the wearer's body during the wearing operation and during wearing.
  • the central portion of the liquid absorption layer between the slits is not elongated in the vertical direction, and the entire liquid absorption layer is sufficiently extended so as to be in close contact with the wearer's body. I can't.
  • the body fluid excreted in the central portion of the liquid absorption layer may move toward both side edges along the slit and easily leak to the outside.
  • the front and back layers are formed of an elastic sheet and an elastic member fixed in a contracted state, the entire absorbent article is curved even in a natural state, and is stretched in a flat state. I can't do it.
  • An object of the present invention is to improve the conventional absorbent article, and it is excellent in fit by extending and shrinking along the wearer's body, and the body fluid excreted in the central part is difficult to leak, and the required absorption performance It is providing the absorbent article provided with the liquid absorption layer which has.
  • the present invention has a vertical axis and a horizontal axis, a skin facing surface and a non-skin facing surface on the opposite side thereof, a surface layer located on the skin facing surface side, It is an absorptive article containing the back layer located in the skin opposing surface side, and the liquid absorption layer interposed between the front and back layers.
  • the front surface layer and the back surface layer are composed of one or a plurality of sheet members, and have extensibility at least in the direction of the vertical axis, At least one of the sheet members constituting the front and back layers has elasticity in the direction of the vertical axis, and the liquid absorption layer has a central extension means located in the central portion thereof, and both side portions.
  • the central extension means is formed from a plurality of first slits that intersect the longitudinal axis and are spaced apart by a given dimension in the direction of the longitudinal axis.
  • the means is formed of a plurality of pairs of second slits extending from both side edges of the liquid absorption layer toward the vertical axis and spaced apart from each other in the direction of the horizontal axis in the vicinity of the vertical axis.
  • the second slit is located between the first slits arranged in the direction of the inner side, the inner end of the second slit is located on the vertical axis side with respect to the outer end of the first slit, and the liquid absorbing layer is at least It can extend in the direction of the longitudinal axis.
  • a disposable absorbent article includes a central elongating means composed of a plurality of first slits arranged in the direction of the vertical axis in the central portion of the liquid absorbing layer, and longitudinally extending from both side edges of the liquid absorbing layer.
  • the liquid-absorbing layer extends at least in the direction of the vertical axis by having side extension means extending in the direction of the horizontal axis and having a pair of second slits facing each other in the direction of the horizontal axis. Is possible.
  • the absorbent article in a state where the absorbent article is attached to clothes such as underwear, the absorbent article is stretched together with other sheet members, and the absorbent article can be deformed into a curved shape along the body shape of the wearer.
  • the first slits and the second slits are alternately arranged in the direction of the vertical axis, the bodily fluid excreted between the first slits in the central part moves to both sides and is difficult to leak to the outside.
  • shaft even if the opening by each slit is comparatively small, it can expand
  • at least one of the sheets constituting the front and back layers has stretchability, and the stretchable sheet does not shrink excessively in the natural state, so the absorbent article is relatively flat. It becomes easy to become a shape.
  • wire of FIG. The top view of a liquid absorption layer.
  • the partially broken top view similar to FIG. FIG. 10 is a sectional view taken along line XX in FIG. 9.
  • a sanitary napkin 10 shown as an example of the absorbent article of the present invention has a vertical axis P that bisects the dimension in the width direction and a horizontal dimension that bisects the dimension in the length dimension.
  • an intermediate sheet made of a relatively bulky fiber nonwoven fabric may be disposed between the top sheet 11 and the liquid absorbing layer 13.
  • the layer composed of one or more sheet members positioned on the skin facing surface side is positioned on the surface layer 8 and the non-skin facing surface side of the liquid absorbing structure 13.
  • a layer composed of one or a plurality of sheet members is referred to as a back layer 9. Therefore, the liquid absorption layer 13 is disposed between the front surface layer 8 and the back surface layer 9.
  • the surface layer 8 is composed of a surface sheet 11 and an intermediate sheet (not shown), and the back surface layer 9 is composed of a back surface sheet 12 and a leak-proof sheet 14.
  • a pair of side sheets 20 described later is formed of a sheet member separate from the back sheet 12, but the side sheet 20 is not disposed, and the back sheet 12 is the entire sanitary napkin 10. It may be formed from a sheet material having a size, and the wing portion may be formed from the back sheet 12.
  • the elongation rate of 100% means that the length is 2 times the length of the natural state before the stretching force is applied, and the elongation rate of 50% is that the stretching force is applied. This means that the length is 1.5 times longer than the length of the natural state.
  • pulling the sanitary napkin 10 in the direction of the vertical axis P means that the sanitary napkin 10 is gripped by one end and the other end in the reverse direction so that they are separated from each other in the direction of the vertical axis P. It means that one end is fixed and the other end is pulled outward in the direction of the vertical axis P so as to be separated from the one end.
  • the liquid-absorbing layer 13 has extending means that can be extended in at least the length dimension in the direction of the longitudinal axis P, which is disposed over the entire area.
  • the extension means extends in the direction of the horizontal axis Q, and a central extension means 16 composed of a plurality of first slits 15 extending in the direction of the horizontal axis Q arranged side by side in the direction of the vertical axis P.
  • Side extension means 18 composed of a plurality of second slits 17 arranged side by side in a state of being spaced apart by a given dimension in the direction of the longitudinal axis P on both sides.
  • the first and second slits 15 and 17 of the liquid absorbing layer 13 in the present embodiment are those in which a part of the liquid absorbing layer 13 remains on the front surface side or the back surface side in addition to penetrating the liquid absorbing layer 13.
  • a groove that allows the liquid absorbing layer 13 to extend at least in the direction of the longitudinal axis P is included.
  • the front surface sheet 11 is joined to a surface of the leak-proof sheet 14 facing the back sheet 12 by bending both side portions (folded portions) 19 inward.
  • the back sheet 12 extends further outward in the direction of the horizontal axis Q than the top sheet 11, and a pair of side sheets 20 are fixed on the front surface side.
  • An end flap 22 located outside the liquid absorbing layer 13 in the direction of the vertical axis P is formed by a part of the top sheet 11, the back sheet 12 and the side sheet 20, and the liquid absorbing layer 13 is formed by the back sheet 12 and the side sheet 20.
  • a side flap 24 having a pair of wing portions 23 that are located on the outer side in the direction of the horizontal axis Q and bend outward in the vicinity of the horizontal axis Q is formed.
  • the front surface layer 8 and the back surface layer 9 are composed of one or a plurality of sheet members (the front surface layer 8 is a front surface sheet 11 and an intermediate sheet, and the back surface layer 9 is a back surface sheet 12 and a leak-proof sheet 14). It has extensibility in the direction of the axis P. That is, all the sheets constituting the front and back layers 8 and 9 have elastic or inelastic stretchability.
  • an inelastic and stretchable sheet for example, spunbond fiber nonwoven fabric, various known fiber nonwoven fabrics such as SMS (spunbond / meltblown / spunbond) and fiber nonwoven fabric, and plastic film can be subjected to gear stretching and slit processing. By applying, what gave the predetermined extensibility to the direction of the vertical axis
  • shaft P can be used.
  • a stretchable fiber nonwoven fabric manufactured by various known production methods such as a spunbond nonwoven fabric, an air-through nonwoven fabric, and a needle punched nonwoven fabric composed of (elastic filament) can be used.
  • Elastic fibers are made from thermoplastic elastomer, rubber, etc., and especially when thermoplastic elastomer is used as a raw material, melt spinning using an extruder is possible in the same way as ordinary thermoplastic resins.
  • thermoplastic elastomer examples include SBS (styrene-butadiene-styrene), SIS (styrene-isoprene-styrene), SEBS (styrene-ethylene-butadiene-styrene), and SEPS (styrene-ethylene-propylene-styrene).
  • SBS styrene-butadiene-styrene
  • SIS styrene-isoprene-styrene
  • SEBS styrene-ethylene-butadiene-styrene
  • SEPS styrene-ethylene-propylene-styrene
  • olefin elastomers polyester elastomers, and polyurethane elastomers. These can be used individually by 1 type or in combination of 2 or more types. Further, core-sheath type or side-by-side type composite fibers made of these resins can
  • the “extensible sheet” means that the target sheet is stretched from the natural state in the direction of the vertical axis P with a force of 30 mN / 25 mm in the direction of the vertical axis P in the natural state. It is possible to elongate by 3% or more from the dimension, that is, it becomes possible to increase the length by 1.03 times or more from the length before the extension force is applied.
  • the sheet having stretchability is a spunbond nonwoven fabric composed only of elastic fibers, SMS (spunbond / meltblown / spunbond) or SM (spunbond / meltblown).
  • SMS spunbond / meltblown / spunbond
  • SM spunbond / meltblown
  • a plurality of layers or the like can be used, and the stretchable nonwoven fabric can be formed from a stretchable composite sheet formed by joining the stretchable nonwoven fabric with a nonstretchable nonwoven fabric composed of nonstretchable fibers.
  • the stretchable composite sheet can also be formed from a plurality of layers in which stretchable fiber nonwoven fabrics are arranged between two non-stretchable fiber nonwoven fabrics.
  • the non-stretchable fiber nonwoven fabric is formed from various known fiber nonwoven fabrics such as an air-through fiber nonwoven fabric and a heat roll fiber nonwoven fabric in addition to the spunbond fiber nonwoven fabric.
  • Examples of the constituent fibers of the nonwoven fabric used as the inelastic sheet include fibers made of polyethylene (PE), polypropylene (PP), polyester (PET), and the like.
  • a stretchable stretched non-stretchable fiber nonwoven fabric at a predetermined magnification is used.
  • a composite sheet by joining to a nonwoven fabric through known joining means such as embossing / debossing or hot melt adhesive, or by joining the two nonwoven fabrics and then partially cutting at least the non-stretchable nonwoven fabric. You may give elasticity to the whole.
  • Such partial cutting does not extend continuously in the entire width direction of the stretchable composite sheet, but is discretely arranged in the form of dots or slits, and mainly the non-stretchable fiber nonwoven fabric is cut and stretched.
  • the non-woven fiber nonwoven fabric is preferably not cut so that its stretchability does not deteriorate.
  • the stretchable sheet in the present invention is stretched to 60% or less, preferably 40% or less from the dimension of the vertical axis P in the natural state (stretched 1.4 to 1.6 times). In the state), it is fixed to another sheet member.
  • the stretchable sheet is fixed at a relatively low elongation rate, and the liquid absorbing layer 13 of the sanitary napkin 10 has the required rigidity, so that the stretchable sheet shrinks.
  • the sanitary napkin 10 has a flat shape in a natural state, and is further extended from the extended state when a pulling force is applied in the direction of the longitudinal axis P to the sanitary napkin. A flat form can be maintained. Therefore, even when it is stretched together with it being fastened to the clothes, it can exhibit a curved shape that conforms to the shape of the body.
  • the stretchable sheet was fixed at a predetermined elongation rate.
  • the core wrap sheet 29 or the side sheet 20 to which the back sheet (plastic film) 12 is bonded is formed from an inelastic and extensible sheet, and the back sheet 12 is formed from a stretchable sheet.
  • a part of the part where both sheets were joined via a hot melt adhesive was cut out from the sanitary napkin 10 to prepare a sample.
  • a cold spray was sprayed on the bonding interface of the sample to separate the sheet piece of the inelastic and stretchable sheet and the sheet piece of the stretchable sheet into a natural state.
  • the top sheet 11 has liquid permeability so as to permeate body fluid and be absorbed and retained in the liquid absorption layer 13, and is obtained by hydrophilizing the above-described constituent fibers or fiber nonwoven fabric, or hydrophilic as constituent fibers.
  • a fiber nonwoven fabric using a conductive fiber can be used.
  • the leak-proof sheet 14 has hydrophobicity and is formed from an (elastic) thermoplastic film mainly composed of a thermoplastic polyurethane polymer or the like.
  • the leak-proof sheet 14 can also be formed from a composite sheet of such a thermoplastic film and a stretchable fiber nonwoven fabric.
  • the liquid-absorbing layer 13 is a panel shape shaped to a predetermined shape and size, and has a liquid-absorbing core 28 having a semi-rigidity and elasticity that is higher than that of a sheet member, and an option, A liquid-permeable and extensible core wrap sheet 29 is provided to enclose the liquid-absorbent core 28 in order to improve shape retention and liquid diffusibility.
  • the core wrap sheet 29 includes a known fiber nonwoven fabric that has been subjected to gear stretching or slit processing, an elastic fiber nonwoven fabric, or an elastic fiber nonwoven fabric that is subjected to gear stretching. The elastic elastic sheet which was made is used suitably.
  • the liquid absorbent core 28 is formed from a mixture of airlaid fiber nonwoven fabric, fluffed wood pulp, and superabsorbent polymer particles (SAP).
  • SAP superabsorbent polymer particles
  • chemical pulp, cellulose fiber, rayon, and acetate can be used as the fluff wood pulp.
  • airlaid nonwoven fabric for example, a material obtained by thermally fusing pulp and synthetic fiber or bonding them with a binder can be used.
  • the superabsorbent polymer particles have a three-dimensional network structure in which a water-soluble polymer is appropriately cross-linked, absorb water 30 to 60 times its own weight, but are essentially insoluble in water, for example, starch , Acrylic acid-based, and amino acid-based particulate or fibrous polymers can be used.
  • the liquid-absorbing layer 13 it is preferable to use a layer formed by superposing a single layer or a plurality of layers of an air-laid nonwoven fabric that does not contain superabsorbent polymer particles.
  • the superabsorbent polymer particles By not including the superabsorbent polymer particles, it is easy to form the first and second slits 15 and 17 in the manufacturing process, and the fine particulate superabsorbent polymer particles leak out from the slits 15 and 17. Because there is no.
  • the first and second slits 15 and 17 are formed, it is difficult for the body fluid to diffuse in the direction of the vertical axis P.
  • the superabsorbent polymer particles are compared with absorbent materials such as fluff wood pulp. Since the absorption rate is slow, it is possible to prevent further reduction in diffusion and absorption rate in the direction of the vertical axis P due to the absence of superabsorbent polymer particles.
  • a plurality of first fastening portions 31 that extend in a line shape in the direction of the horizontal axis Q and are arranged in the direction of the vertical axis P with a predetermined distance are arranged.
  • a second fastening part 32 made of a pressure sensitive adhesive is also arranged on the outer surface of the wing part 23.
  • the first and second fastening portions 31 and 32 are covered with a separator 33 made of a plastic film or a fiber nonwoven fabric.
  • the first and second fastening portions 31 and 32 have a fastening strength sufficient for the wearer's clothing at a practical level, and specifically, a fastening of about 2.0 to 4.0 N. Has strength.
  • the first and second fastening portions 31 and 32 do not overlap each other in the plan view of the first and second slits 15 and 17 and the diaper 10, and at least the existence region of the liquid absorbing layer 13 is in the direction of the vertical axis P. It is preferable that the region on the first end edge 10a side and the region on the second end edge 10b side do not overlap each other in plan view.
  • the first and second fastening portions 31 and 32 do not overlap with the first and second slits 15 and 17 in plan view, the openings of the slits 15 and 17 at the time of extension are not suppressed.
  • the liquid absorbing layer 13 can exhibit the required extensibility.
  • the required extensibility can be ensured on both end sides of the sanitary napkin 10, and compared with the case where the extensibility is suppressed. And a feeling of wear becomes good.
  • each sheet member is a known joining means, for example, a heat A seal portion (round seal) joined by various heat welding means such as embossing and sonic processing is formed.
  • the sheet members that overlap each other except for the outer peripheral edge joined by the seal portion can use a hot melt adhesive known in this type of field, but the stretchability of the sanitary napkin 10 as a whole can be increased. In order not to inhibit, it is preferable to use a hot melt adhesive made of a known rubber adhesive or the like and a mixture thereof.
  • thermoplasticity is adopted.
  • a heat-sealing material such as fiber
  • the core wrap sheet 29 is formed of thermoplastic fibers, the core wrap sheet 29 is also fused at the same time
  • the heat fusible material is highly absorbent from the cut surface. It is possible to prevent the polymer particles from leaking out.
  • the liquid absorption layer 13 has front and rear end edges 13a and 13b facing each other in the direction of the vertical axis P, and both side edges 13c and 13d facing each other in the direction of the horizontal axis Q.
  • the central extending means 16 is composed of a plurality of first slits 15 that intersect with the vertical axis P in the central portion of the liquid absorption layer 13 and are spaced apart by a given dimension in the direction of the vertical axis P.
  • the side extending means 18 extends between the first slits 15 from both side edges 10c and 10d toward the vertical axis P, and is separated from each other in the direction of the horizontal axis Q in the vicinity of the vertical axis P.
  • the liquid absorbing layer 13 includes the central extending means 16 and the side extending means 18 so that when the entire sanitary napkin 10 is extended in the direction of the vertical axis P together with other sheet members, the liquid absorbing layer 13 absorbs liquid by the first slit 15.
  • a plurality of circular openings are formed in the central portion of the layer 13, and the portion between the openings is also extended in the direction of the vertical axis P by the second slits 17 extending inwardly from the side edges 13c and 13d. Is expanded in the direction of the vertical axis P.
  • the sanitary napkin 10 has a performance of contracting after being stretched by at least one of the sheet members constituting the front and back surface layers 8 and 9 having elasticity.
  • the sanitary napkin 10 as a whole is vertical. When extended in the direction of the axis P, it can expand and contract.
  • the sanitary napkin 10 itself is pulled from the natural state with a force of about 700 mN / 25 mm in the direction of the vertical axis, at least 3% in the direction of the vertical axis.
  • the length can be extended, that is, the length is 1.03 times or more from the length before the extension force is applied.
  • the liquid absorbing layer 13 is stretched together with the front and back layers 8 and 9 by the stretching means 16 and 18, and the sanitary napkin 10 is Along with the clothing, it can be shaped along the body shape.
  • contracts according to the predetermined
  • ⁇ Measurement method of elongation rate of sanitary napkin Both ends of the sanitary napkin 10 are gripped by a chuck of a tensile tester (for example, an Instron type tensile tester) by a width of 10 to 20 mm and pulled at a speed of 100 mm / min for a width of 25 mm.
  • the elongation rate (%) was measured when an extension force of 700 mN was applied in the direction of the vertical axis P without damaging the use napkin.
  • the sanitary napkin 10 includes a three-dimensional cuff having an upright property, the measurement is performed with the three-dimensional cuff removed.
  • the elongation rate in the direction of the vertical axis P of the liquid absorption layer 13 depends on the shape, size, separation dimension, and the like of the first and second slits 15, 17.
  • the length dimension (dimension in the direction of the horizontal axis Q) W2 of the first and second slits 15 and 17 is preferably about 30 to 70 mm, more preferably about 40 to 60 mm, and adjacent first slits 15 in the direction of the vertical axis P.
  • the distance R1 between the second slit 17 and the second slit 17 in the direction of the vertical axis P is preferably about 5 to 30 mm, more preferably about 8 to 15 mm.
  • Dimension R2 Preferably about 5 ⁇ 30 mm, more preferably about 10 ⁇ 20 mm.
  • the length dimension W2 of the 1st and 2nd slits 15 and 17 is about 30 mm or less, the liquid absorption layer 13 is not fully extended in the direction of the vertical axis P, and the extensibility of the sanitary napkin 10 as a whole is reduced. There is a risk.
  • the dimension W2 is about 70 mm or more, the tensile strength of the liquid-absorbing layer 13 is lowered, and the shape may collapse during the wearing operation or during wearing.
  • the separation dimensions R1 and R2 are about 5 mm or less, the extensibility of the liquid absorbing layer 13 is improved, while the separation dimension R1 between the first slit 15 and the second slit 17 and the distance between the second slits 17 are increased.
  • the separation dimension R2 is reduced, the tensile strength of the liquid absorbing layer 13 is decreased, and there is a possibility that a part of the liquid absorption layer 13 is broken during wearing or wearing operation.
  • the separation dimensions R1 and R2 are each about 30 mm or more, the liquid absorption layer 13 has the required tensile strength, but the extensibility is lowered, and the sanitary napkin 10 as a whole is fully stretched when attached to the clothes. You may not be able to do it.
  • the sanitary napkin 10 when the sanitary napkin 10 is worn, the sanitary napkin 10 is attached to the inner surface of the garment, and each sheet member constituting the sanitary napkin 10 and the liquid absorption layer 13 together with the garment are worn by the wearer's body. 39, the adhesion to the body 39 of the clothes and the wearer is improved, and it is easy to adapt to the movement of the wearer's body 39, and is excellent in leakage prevention and wearability.
  • the first and second slits 15 and 17 constituting the central extending means 16 and the side extending means 18 are provided at regular positions in the entire liquid absorbing layer 13, so that the first and first slits are extended when they are extended.
  • the liquid absorption layer 13 is expanded from the case where the slits are formed in an irregular size and position. It easily shrinks and returns to its original state, and it has excellent recoverability. Further, since the second slit 17 extends inward from the side edges 10c and 10d, the liquid absorbing layer 13 is compared with a case where the second slit 17 extends inward from a position inside the side edges 10c and 10d. The whole is easily extended in the direction of the vertical axis P.
  • the extending means of the liquid absorption layer 15 is formed of only slits extending inward from the side edges 10c and 10d, the body fluid excreted in the liquid absorption layer 15 is laterally moved along the slits.
  • the liquid may move in the direction of the axis Q and leak to the outside of the liquid absorbing layer 15. Since the second slit 17 extending inwardly from both side edges 10c, 10d is located between the one slit 15, the body fluid 40 excreted between the first slits 15 in the central portion is located outside in the direction of the horizontal axis Q from the central portion. It will be difficult to leak outside.
  • the first and second slits 15 and 17 intersects in the direction of the vertical axis P, it is easy to extend further in the direction of the vertical axis P, and one opening is relatively small. Can also exhibit the required elongation. That is, according to the arrangement pattern of the first and second slits 15 and 17 of the present embodiment, both required extensibility and body fluid absorption retention can be achieved. Further, in at least one of the front and back layers 8 and 9, at least one of the constituting sheet members has elasticity, so that the sanitary napkin 10 as a whole can be slightly contracted, and the body movement during wearing can be reduced. Can adapt.
  • the density of the liquid absorbing layer 13 is preferably about 0.06 to 0.1 g / cm 3
  • the liquid absorbing layer 13 preferably has an elongation of about 100 to 200%.
  • clothing such as cloth underwear is at least about 50% in the longitudinal direction so as to exhibit a curved shape along the perineum of the wearer at the crotch portion in order to exhibit fitability to the wearer's body.
  • each sheet member constituting the sanitary napkin 10 and the liquid-absorbing layer 13 are sealed at the outer peripheral edge, hot melt adhesive, etc.
  • the members constituting the sanitary napkin 10 with respect to the expansion ratio of about 50% of the clothes, considering that the elongation rate of the sheet material and the material of the liquid-absorbing layer 13 itself is reduced. It can be said that the shape of the liquid-absorbing layer 13 that is most difficult to maintain the shape after expansion / contraction can be easily maintained even when the expansion / contraction is repeated by allowing the liquid-absorbing layer 13 to extend to 100% or more.
  • ⁇ Measurement method of elongation rate of liquid absorption layer As a method for measuring the elongation rate of the liquid absorbing layer 13, first, a cold spray is sprayed on the bonding interface of the liquid absorbing layer 13, and the liquid absorbing layer 13 is taken out from the sanitary napkin 10 to obtain a sample. One end of the sample is clamped with a tensile tester (for example, an Instron type tensile tester) on one chuck, the other end is clamped on the other chuck, and the liquid absorption layer 13 is absorbed at a pulling speed of 50 mm / min. Pull until the core 28 is visually ruptured.
  • a tensile tester for example, an Instron type tensile tester
  • the surface sheet 11 is formed from the stretchable fiber nonwoven fabric which has liquid permeability, the touch is favorable and all the sheet members which touch a wearer's skin, ie, the surface layer 8, are attached.
  • the surface sheet 11, the back sheet 12, and the side sheet 20 that are formed are all formed of a stretchable nonwoven fabric, so that the sanitary napkin as a whole has a touch and flexibility like underwear, and the wearing feeling is improved.
  • the side flap 24 is formed by the front and back sheets 11 and 12 having elasticity and the side sheet 20 having elasticity, the side flap 24 is formed only from the front and back sheets 11 and 12.
  • the strength of the side flaps 24 is improved and the stretchability is improved, and the side flaps 24 are attached to the clothing via the second fastening parts 32 located on the back side of the wing parts 23 while pulling the side flaps 24 in the direction of the horizontal axis Q. When fixed, it is stably fixed.
  • the first and second slits 15 and 17 are wavy, and the liquid absorbing layer 13 extends in the direction of the vertical axis P together with the clothes.
  • the opening formed by the first and second slits 15 and 17 has a wavy shape. If the first and second slits are straight, they will bend and fit to the body, so the part deformed from straight to bend will be slightly deformed or hardened.
  • it is curved along the shape of the slit, so that it can be suppressed. .
  • ⁇ Modification 2> Referring to FIGS. 9 and 10, in this modified example, between the top sheet 11 and the side sheet 20, between the first and second end edges 10 a and 10 b, from the outer edge of the bent portion 19.
  • a pair of elastic auxiliary sheets 26 extending to the inner edge of the portion 23 are arranged.
  • the elastic auxiliary sheet 26 is positioned outside both sides of the liquid absorbing layer 13 and imparts stretchability to the arrangement region thereof, so that the semi-rigid liquid absorbing layer 13 having a rigidity higher than that of the sheet member is applied to clothing such as underwear. At the same time, it helps to be extended in a curved shape.
  • the sanitary napkin 10 is more worn during wear by the elastic auxiliary sheet 26 extending and contracting together with the elastic sheet that is one of the sheet members constituting the front and back layers 8 and 9. It can be said that it becomes easy to adapt to the movement of the.
  • the components constituting the sanitary napkin 10 are not limited to the materials described in the present specification.
  • the material can be used without limitation.
  • the terms “first” and “second” used in the present specification and claims are merely used to distinguish similar elements, positions, and the like.
  • channel of a predetermined pattern may be formed.
  • the surface layer and the back layer are composed of one or a plurality of sheet members and have at least extensibility in the direction of the vertical axis.
  • at least one of the sheet members constituting the front and back layers has elasticity in the direction of the vertical axis
  • the liquid absorption layer has a central extension means located at a central portion thereof.
  • the central extension means is formed from a plurality of first slits that intersect the longitudinal axis and are arranged at a given distance in the direction of the longitudinal axis.
  • the side extending means is directed from the side edges of the liquid absorption layer toward the vertical axis.
  • a plurality of pairs of second slits spaced from each other in the direction of the horizontal axis in the vicinity of the vertical axis, and the second slit is located between the first slits arranged in the direction of the vertical axis.
  • the inner end of the second slit is positioned on the vertical axis side with respect to the outer end of the first slit, and the liquid absorption layer can extend at least in the direction of the vertical axis.
  • the present invention disclosed in the above paragraph includes at least the following embodiment, which can be used alone or in combination.
  • (1) When pulled from the natural state with a force of about 700 mN / 25 mm in the direction of the vertical axis, it can extend at least 3% or more in the direction of the vertical axis.
  • (2) The surface layer has a liquid-permeable surface sheet, the back surface layer has a liquid-impermeable back sheet, and at least one of the front and back sheets is made of a stretchable fiber nonwoven fabric. It is formed.
  • the distance between the first slit and the second slit in the direction of the vertical axis is about 5.0 to 30.0 mm, and the distance between the pair of second slits facing each other in the direction of the horizontal axis Is about 5.0 to 30.0 mm.
  • the back surface layer has a liquid-impervious and stretchable leak-proof sheet disposed on the bottom surface of the liquid absorbing layer.
  • a stretchable side sheet extending from the both side portions of the liquid absorption layer to the outside in the horizontal axis direction is disposed.
  • a pair of elastic auxiliary sheets extending in the direction of the vertical axis is disposed on the side flaps formed from the top sheet, the back sheet, and the side sheets on the outer sides of both side edges of the liquid absorption layer.

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)
PCT/JP2015/061942 2014-06-30 2015-04-20 吸収性物品 WO2016002314A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-135427 2014-06-30
JP2014135427A JP6207475B2 (ja) 2014-06-30 2014-06-30 吸収性物品

Publications (1)

Publication Number Publication Date
WO2016002314A1 true WO2016002314A1 (ja) 2016-01-07

Family

ID=55018872

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/061942 WO2016002314A1 (ja) 2014-06-30 2015-04-20 吸収性物品

Country Status (3)

Country Link
JP (1) JP6207475B2 (enrdf_load_stackoverflow)
TW (1) TWI667017B (enrdf_load_stackoverflow)
WO (1) WO2016002314A1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017176743A (ja) * 2016-03-31 2017-10-05 ユニ・チャーム株式会社 吸収性物品
CN109069325A (zh) * 2016-04-28 2018-12-21 尤妮佳股份有限公司 吸收性物品
JP2019018033A (ja) * 2018-10-03 2019-02-07 ユニ・チャーム株式会社 吸収性物品

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109568016A (zh) * 2018-11-09 2019-04-05 洪雅县瓦屋山药业有限公司 一种利用雅连制作的消炎抑菌卫生巾
JP7534876B2 (ja) * 2020-06-30 2024-08-15 日本製紙クレシア株式会社 吸収性物品
JP7488137B2 (ja) 2020-07-06 2024-05-21 花王株式会社 吸収性シート及び吸収性物品

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0187720U (enrdf_load_stackoverflow) * 1987-12-01 1989-06-09
JPH06503249A (ja) * 1990-12-19 1994-04-14 ザ、プロクター、エンド、ギャンブル、カンパニー 横方向にセグメント分けされたコアを持つ衛生ナプキン
JPH11508470A (ja) * 1995-07-03 1999-07-27 ザ、プロクター、エンド、ギャンブル、カンパニー 伸長性のある関節式連結部分を備えた吸収体
JP2009153736A (ja) * 2007-12-27 2009-07-16 Kao Corp 吸収性物品

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3725008B2 (ja) * 2000-06-21 2005-12-07 花王株式会社 吸収性物品
JP4455241B2 (ja) * 2004-09-14 2010-04-21 ユニ・チャーム株式会社 生理用ナプキン
JP2014064858A (ja) * 2012-09-27 2014-04-17 Kao Corp 吸収性物品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0187720U (enrdf_load_stackoverflow) * 1987-12-01 1989-06-09
JPH06503249A (ja) * 1990-12-19 1994-04-14 ザ、プロクター、エンド、ギャンブル、カンパニー 横方向にセグメント分けされたコアを持つ衛生ナプキン
JPH11508470A (ja) * 1995-07-03 1999-07-27 ザ、プロクター、エンド、ギャンブル、カンパニー 伸長性のある関節式連結部分を備えた吸収体
JP2009153736A (ja) * 2007-12-27 2009-07-16 Kao Corp 吸収性物品

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017176743A (ja) * 2016-03-31 2017-10-05 ユニ・チャーム株式会社 吸収性物品
CN109069325A (zh) * 2016-04-28 2018-12-21 尤妮佳股份有限公司 吸收性物品
CN109069325B (zh) * 2016-04-28 2020-01-17 尤妮佳股份有限公司 吸收性物品
JP2019018033A (ja) * 2018-10-03 2019-02-07 ユニ・チャーム株式会社 吸収性物品

Also Published As

Publication number Publication date
TW201620470A (zh) 2016-06-16
JP6207475B2 (ja) 2017-10-04
TWI667017B (zh) 2019-08-01
JP2016013200A (ja) 2016-01-28

Similar Documents

Publication Publication Date Title
WO2008069279A1 (ja) 吸収性物品
JP6207475B2 (ja) 吸収性物品
JP2009160242A (ja) 吸収体及び使い捨て吸収性物品
JP2011072720A (ja) 吸収性物品
JP2008161250A (ja) 吸収性物品
JP6360539B2 (ja) 個装吸収性物品、吸収性物品、及び吸収性物品を折り畳む方法
JP6162412B2 (ja) 吸収性物品
JP6467213B2 (ja) 使い捨て着用物品
JP6168855B2 (ja) 使い捨て着用物品
JP6128980B2 (ja) 使い捨てのパンツ型おむつ
WO2013065620A1 (ja) 使い捨て着用物品
JP4917366B2 (ja) 使い捨ておむつ
JP6591833B2 (ja) 吸収性物品
WO2016002313A1 (ja) 吸収性物品
JP2017042383A (ja) 吸収性物品
JP7359553B2 (ja) 吸収性物品、及び吸収性物品の折り畳み方法
WO2015151897A1 (ja) 使い捨ておむつ
CN107072826B (zh) 吸收性物品
JP5780789B2 (ja) 吸収性物品
JP6353237B2 (ja) 吸収性物品
JP5717379B2 (ja) 吸収性物品
JP5767808B2 (ja) パッドタイプ吸収性物品
JP5934505B2 (ja) 吸収性物品
JP5431203B2 (ja) 吸収性物品
JP5822903B2 (ja) パンツ型の使い捨て着用物品

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15815412

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15815412

Country of ref document: EP

Kind code of ref document: A1