WO2019021444A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2019021444A1
WO2019021444A1 PCT/JP2017/027345 JP2017027345W WO2019021444A1 WO 2019021444 A1 WO2019021444 A1 WO 2019021444A1 JP 2017027345 W JP2017027345 W JP 2017027345W WO 2019021444 A1 WO2019021444 A1 WO 2019021444A1
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WO
WIPO (PCT)
Prior art keywords
skin
absorbent
absorbent article
skin side
core
Prior art date
Application number
PCT/JP2017/027345
Other languages
English (en)
Japanese (ja)
Inventor
陽子 真鍋
義徳 村上
良輔 山崎
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to PCT/JP2017/027345 priority Critical patent/WO2019021444A1/fr
Priority to JP2017562379A priority patent/JP6328357B1/ja
Publication of WO2019021444A1 publication Critical patent/WO2019021444A1/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
    • 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
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • 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
    • A61F13/53—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
    • A61F13/533—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 having discontinuous areas of compression
    • 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
    • A61F13/534—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 an inhomogeneous composition through the thickness of the pad
    • 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
    • A61F13/534—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 an inhomogeneous composition through the thickness of the pad
    • A61F13/535—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 an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • 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
    • A61F13/534—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 an inhomogeneous composition through the thickness of the pad
    • A61F13/535—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 an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • A61F13/536—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 an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes having discontinuous areas of compression

Definitions

  • the present invention relates to an absorbent article.
  • Patent Documents 1 to 3 As absorbent articles such as disposable diapers and sanitary napkins, those containing a deodorant and an antibacterial agent in order to suppress the odor derived from excrement are known (Patent Documents 1 to 3).
  • the deodorant provides a deodorizing function by capturing substances that cause odor, and the antibacterial agent prevents odor generation by suppressing the growth of bacteria that decomposes excrement and exerts a deodorizing effect.
  • the present applicant has developed a thin paper containing an antibacterial agent and a deodorant for the purpose of dealing with various odor causing substances (Patent Document 4).
  • JP 2001-276118 A Unexamined-Japanese-Patent No. 2001-309942 JP 2013-376 A JP, 2016-169446, A
  • the present invention includes a skin sheet, a non-skin sheet, and an absorber disposed between the sheets, and along the longitudinal direction corresponding to the longitudinal direction of the wearer, the front part, the rear part, and their middle And an intermediate portion including a region that abuts on the excretory portion of the wearer.
  • the absorbent has an absorbent core and a core wrap which covers the non-skin side of the absorbent core.
  • the absorbent body has a cavity having an opening on the non-skin side and a bottom on the skin side, and the bottom constitutes a consolidation part.
  • the core wrap contains a deodorant.
  • FIG. 1 is a plan view schematically showing the skin side of a sanitary napkin which is an embodiment of the absorbent article of the present invention.
  • FIG. 2 is a schematic cross-sectional view of the cross section taken along the line II of FIG.
  • FIG. 3 is a cross-sectional view corresponding to FIG. 2 of a sanitary napkin which is another embodiment of the absorbent article of the present invention.
  • the present invention relates to an absorbent article which can continuously exhibit deodorizing performance when worn.
  • the absorbent article 1 (hereinafter, also referred to as “the sanitary napkin 1” or “the napkin 1”), which is a preferred embodiment of the present invention, is disposed on the skin side of the wearer.
  • the non-skin surface sheet 3 disposed on the wearing side of the wearer and the absorbent body 4 disposed between the sheets 2 and 3 are provided.
  • the napkin 1 has a front portion 1A disposed on the front side (ventral side) of the wearer, a rear portion 1C disposed on the rear side (back side), and an intermediate portion 1B positioned therebetween, It has a longitudinal direction X extending from the portion 1A to the rear portion 1C via the middle portion 1B and a lateral direction Y orthogonal to this.
  • the middle portion 1B is a region which is disposed so as to face in the longitudinal direction X so as to abut on a liquid excretory portion (a vaginal opening etc.) of the wearer when worn.
  • wearing said here means the state by which the usual appropriate wearing position (the correct wearing position of the said absorbent article) was maintained, and when an absorbent article is in the state where it shifted from this wearing position. Not included.
  • a leak-proof groove (hereinafter referred to as “the leak-proof groove as a pressing portion 5 formed by integrally pressing the skin sheet 2 and the absorbent body 4 across the rear portion 1C from the front portion 1A to the intermediate portion 1B in the napkin 1 , It is also simply referred to as leak-proof groove 5).
  • the leak-proof groove 5 extends in the longitudinal direction X, and a pair is present on both sides with respect to a center line (not shown) which bisects the napkin 1 in the transverse direction Y.
  • the skin side sheet 2 and the non-skin side sheet 3 each have a size larger than that of the absorbent body 4 and extend outward from the peripheral edge of the absorbent body 4
  • the peripheral seal portion 6 is formed by being bonded to each other by a known bonding means such as an adhesive, a heat seal, an ultrasonic seal or the like.
  • a known bonding means such as an adhesive, a heat seal, an ultrasonic seal or the like.
  • Each of the skin sheet 2 and the non-skin sheet 3 and the absorber 4 may be bonded by an adhesive.
  • a hydrophilic non-woven fabric or a perforated film having liquid permeability can be used, and these non-woven fabrics and films are generally thermoplastic resins such as polyethylene and polypropylene. It is made of polyester resin such as polyolefin resin, polyethylene terephthalate and the like.
  • a liquid impervious film As a material which comprises the non-skin surface sheet 3, a liquid impervious film, a liquid impervious nonwoven fabric etc. can be used, for example, and a liquid impervious film may have moisture permeability. .
  • the absorber 4 extends from the front portion 1A to the rear portion 1C, and has a substantially rectangular shape elongated in the longitudinal direction X in plan view. Moreover, in the napkin 1, as shown in FIG. 1, the non-skin side of the napkin 1 is provided with the adhesion part (not shown) which fixes this napkin 1 to clothing, such as shorts. The adhesive portion is covered with a release sheet when not worn.
  • the skin side is a surface (a side relatively closer to the skin of the wearer) directed to the skin side of the wearer in the wearing state, in the napkin 1 and its constituent members (for example, the absorber 4)
  • a non-skin side is a field (relatively far from a wearer's skin) which is turned to a side opposite to a wearer's skin side in a wearing state in napkin 1 and its constituent members.
  • the absorbent body 4 includes an absorbent core containing an absorbent material, and a core wrap that covers the non-skin side of the absorbent core.
  • the core wrap is in the form of a sheet containing hydrophilic fibers described later, and is also called a core wrap sheet.
  • the core wrap may cover at least the non-skin side of the absorbent core, and may further cover the skin side of the absorbent core.
  • the non-skin side and the skin side of the absorbent core may be covered by wrapping the whole absorbent core with a single core wrap Two pieces of core wrap may cover the non-skin surface and the skin surface of the absorbent core.
  • the napkin 1 is provided with a high basis weight area whose basis weight is higher than that of the peripheral part in the middle part 1B.
  • the high basis weight region in the middle portion 1B is a middle and high portion which is raised toward the skin side of the wearer, and the thickness is larger than the peripheral portion.
  • the high basis weight region in the middle portion 1B is laminated with the upper layer absorbent body 4A located on the skin side and the lower layer absorbent body 4B located on the non-skin side.
  • the upper layer absorbent body 4A is configured such that the skin side surface and the non-skin side surface of the upper layer absorbent core 40A are covered with a single core wrap 41A.
  • the lower layer absorbent body 4B is configured such that the skin side surface and the non-skin side surface of the lower layer absorbent core 40B are covered with a single core wrap 41B.
  • the non-skin side of the upper layer absorber 4A and the skin side of the lower layer absorber 4B are arranged to be in direct contact, and the upper layer absorber 4A and the lower layer absorber 4B It is disposed so as to be sandwiched between the face sheet 3.
  • the absorbers 4A and 4B and / or the sheets 2 and 3 may be bonded to each other by a known bonding means such as an adhesive.
  • a plurality of consolidated portions 8 are intermittently arranged in the longitudinal direction X and the transverse direction Y.
  • the consolidation portion 8 is a portion where the constituent material of the napkin 1 is consolidated and its density is higher than that of the surrounding portion.
  • the consolidation portion 8 exists in the high basis weight region in the middle portion 1B and a part of the high basis weight region It is formed.
  • a cavity 81 and a bottom 82 are formed immediately below the consolidation portion 8 so as to protrude from the core wrap 41B covering the non-skin side of the lower layer absorbent core 40B toward the skin side of the upper layer absorbent core 40A. .
  • the formation of the hollow portion 81 and the bottom portion 82 compresses the upper layer absorbent core 40A located above the bottom portion 82 to form the consolidated portion 8 in which the density of the upper layer absorbent core 40A is high. That is, the consolidated portion 8 points to the region in the thickness direction between the skin side surface of the upper-layer absorbent core 40A and the bottom portion 82 provided in the hollow portion 81.
  • the cavity 81 has an opening on the non-skin side of the lower layer absorber 4B, and the core wrap 41B on the non-skin side of the lower layer absorber 4B penetrates into the lower layer absorbent core 40B and extends to the upper layer absorber 4A. Is formed.
  • the hollow portion 81 is formed to penetrate into the upper absorbent core 40A up to the inside of the upper absorbent core 40A of the upper absorbent 4A, and the bottom 82 is formed on the skin side of the upper absorbent 4A.
  • the bottom portion 82 is positioned so as to compress the absorbent material of the upper layer absorbent core 40A in the thickness direction toward the skin side of the upper layer absorber 4A, and constitutes the consolidation portion 8.
  • the wall surface of the cavity 81 including the bottom 82 is formed by the core wrap 41B in the lower layer absorbent core 40B, and is formed by both the core wrap 41A and the core wrap 42B in the upper layer absorbent core 40A.
  • the consolidation part 8 is disposed at least in the middle part 1B, it is not limited to this.
  • the consolidation portion 8 is preferably present in a region between the pair of leakproof grooves 5 on the both sides in the middle portion 1B, and more preferably disposed in the central region in the lateral direction Y of the middle portion 1B.
  • the presence of the consolidation part 8 in this area not only improves the fit of the napkin 1 to the body, but also can sustain the deodorizing effect described later.
  • the number of the consolidation portions 8 formed and the arrangement interval thereof are not particularly limited.
  • a plurality of consolidated portions 8 are provided in three rows in the longitudinal direction X and the transverse direction Y at equal intervals.
  • the number of the consolidation portions 8 is 2 or more and 20 or less, 1 to 5 in the longitudinal direction X, and It is preferable to arrange 1 to 4 rows in the lateral direction Y. From the same viewpoint, it is preferable that the arrangement intervals of the consolidation portions 8 be equal.
  • the shape and the area when the consolidation part 8 is viewed in plan are also not particularly limited.
  • the planar view shape of the consolidation part 8 is a perfect circle, and the dimension is mutually the same.
  • the plan view shape of the consolidation portion 8 may be, for example, an elliptical shape, a polygonal shape such as a triangle or a quadrangle as long as the effects of the present invention are exhibited, and the plan view shape differs among the consolidation portions 8. It is good.
  • the area of the consolidated portion 8 in plan view is preferably 0.1 mm 2 or more, more preferably 0.5 mm 2 or more, and preferably 25 mm 2 or less, more preferably 15 mm 2 or less.
  • the high basis weight region in the napkin 1 has a low basis weight region lower in basis weight than the high basis weight region in the periphery thereof.
  • the density of the absorbent material contained in the absorbent core in the high basis weight region is higher than the density of the absorbent material in the low basis weight region and lower than the density of the absorbent material in the consolidated portion 8. That is, it is preferable that the density of the absorptive material contained in the absorptive core in each area
  • region is a consolidation part 8> high basis weight area> low density area.
  • the material of the absorbent core that constitutes the absorbent body 4 can be configured to include a hydrophilic fiber such as pulp and a superabsorbent polymer.
  • the absorbent core may be composed of hydrophilic fibers alone.
  • the side sheet 9 may be distribute
  • the side sheets 9 are preferably distributed over the entire length of the skin sheet 2 in the vertical direction X so as to overlap the left and right sides of the skin sheet 2 along the vertical direction X in plan view.
  • the pair of side sheets 9 and 9 are joined to the skin sheet 2 at joining portions 91 respectively.
  • the core wraps 41A and 41B of the absorber 4 contain hydrophilic fibers and a deodorant.
  • Typical hydrophilic fibers are cellulosic fibers such as pulp.
  • As the cellulose-based fibers those conventionally used in absorbent articles can be used without particular limitation.
  • the deodorant contained in the core wraps 41A and 41B itself acts directly on the odor, for example, a substance capable of exhibiting a deodorizing effect by adsorbing, neutralizing or decomposing the odor, and an odor source
  • a substance capable of exhibiting a deodorizing effect by adsorbing, neutralizing or decomposing the odor and an odor source
  • the former is a deodorant in a narrow sense
  • the latter is a broad deodorant that is a concept including an antibacterial agent.
  • the deodorant used in the present invention it is preferable to use an organic deodorant.
  • the organic deodorant can be expected to have a high deodorizing property due to its good affinity with the odor causing substance.
  • Preferred as such deodorants are cationic antibacterial agents, and organic cationic antibacterial agents are particularly preferable from the viewpoint of affinity with organic odor-causing substances and bacteria.
  • the cationic antibacterial agent can suppress the generation of strong rotten odor as control of offensive odor production.
  • an "organic deodorizer” points out that it is a deodorizer containing the component which has an organic compound as a main.
  • cationic antibacterial agent those having the above-mentioned antibacterial activity can be used without particular limitation. For example, those described in paragraphs [0015] to [0018] of the specification of Japanese Patent Application Laid-Open No. 8-99841.
  • One of these cationic antibacterial agents may be used alone, or two or more thereof may be used in combination.
  • the cationic antimicrobial agent is an organic compound-based antimicrobial agent, which is more eluted in urine and other excretory fluid than metal ion-based agents such as silver, zinc and copper, and has a broad antibacterial action.
  • quaternary ammonium salts such as didecyldimethyl ammonium salt, alkyl pyridinium salt, benzethonium salt, benzalkonium salt, monoalkyl trimethyl ammonium salt, dialkyl dimethyl ammonium salt and the like can be mentioned, and at least one selected from the group consisting of these It is preferred to contain a species.
  • One of these cationic antibacterial agents may be used alone, or two or more thereof may be used in combination.
  • the content of the deodorant in the napkin 1 of the present invention, the core wrap 41A, 41B are contained in 0.05 g / m 2 basis weight of not less than the, 0.1 g / m 2 or more preferably, 0.2 g / m Two or more are more preferable.
  • the upper limit is not particularly limited from the viewpoint of control of offensive odor production, and can be appropriately set depending on the use of the article to be used and the like. For example, in the application of the absorbent article, it may be in contact with the wearer's skin directly or for a long time through the excretory fluid, so excessive weight may cause skin irritation such as strong skin irritation. There is a possibility that it may affect the permeability of the urine which passes through the sheet. Therefore, the upper limit is preferably 1.0 g / m 2 or less, more preferably 0.5 g / m 2 or less, 0.3 g / m 2 or less is more preferable.
  • the contained basis weight can be measured by the following method.
  • a dryer, a cold spray, or the like is used to peel off the respective members to obtain the core wraps 41A and 41B as targets.
  • the basis weight of the cationic antibacterial agent in the core wrap can be measured by a liquid chromatograph / mass spectrometer (6140 LC / MS manufactured by Agilent Technologies, Inc., ionization method: ESI).
  • the content of the cationic antibacterial agent can also be measured based on a calibration curve prepared by a calibration curve method.
  • a benzalkonium salt represented by the following formula (1) from the viewpoint of achieving both the antibacterial property and the safety (low irritation to the skin).
  • R 1 and R 2 represent the same or different methyl group, ethyl group, or a linear or branched alkyl group or alkenyl group having 8 to 20 carbon atoms.
  • X - represents a monovalent anion.
  • One of benzalkonium salts represented by the formula (1) can be used alone or in combination of two or more.
  • R 1 and R 2 in the formula (1) for example, a combination in which R 1 is a methyl group and R 2 is a linear or branched alkyl group having 8 to 20 carbon atoms, There may be mentioned a combination in which 1 and R 2 are the same group, and the group is a linear or branched alkyl group having 8 to 20 carbon atoms. In these combinations, the carbon number of the alkyl group is more preferably 10 or more and 18 or less.
  • X - a monovalent anion represented by is preferably, for example, halide ions or anions active group.
  • the "anion active group” refers to an ion having an anionic surface activity.
  • the anionic active group is an anionic active group containing a linear or branched alkyl or alkenyl group having 6 or more carbon atoms, particularly 10 or more carbon atoms, and 20 or less carbon atoms, particularly 18 or less carbon atoms. It is preferred to use.
  • an anionic active group it is preferable to use, for example, an alkyl phosphate ester salt, an alkyl carboxylate salt, an alkyl sulfonate, an alkyl sulfate ester salt, in order to enhance the antibacterial performance.
  • an alkyl phosphoric acid represented by the following formula (2) in that the antibacterial performance is further enhanced.
  • one of R 3 and R 4 represents a linear or branched alkyl or alkenyl group having 6 to 20 carbon atoms, and the other represents a hydrogen atom, a methyl group or an ethyl group.
  • R 3 and R 4 is a combination in which R 3 is a hydrogen atom, and R 4 is a linear or branched alkyl group having 8 to 20 carbon atoms.
  • the carbon number of the alkyl group is more preferably 10 or more and 18 or less.
  • cetyl phosphate benzalkonium has good balance between antibacterial activity and mildness to skin (low water solubility), and is relatively safe, so it is suitable for deodorization. It is suitably used as a sheet for absorbent articles 1 such as core wraps 41A and 41B as an agent.
  • porous particles include porous particles.
  • the porous particles in the present invention refer to particles having a large number of pores on at least the particle surface, and capable of collecting, adsorbing, and / or including volatile components in the pores.
  • the porous particles may be used alone as a deodorant or may be used in combination with the above-mentioned cationic antibacterial agent.
  • Examples of the material of the porous particles include organic compounds, inorganic compounds or polymers thereof, and combinations thereof. Specific examples thereof include synthetic polymers such as porous methacrylic acid polymers, acrylic acid polymers such as porous acrylic acid polymers, porous divinylbenzene polymers, aromatic polymers such as porous pyridine copolymers, and copolymers thereof.
  • Porous polymers include natural porous polymers such as chitin and chitosan; zinc oxide, activated carbon, silica, silicon dioxide (silica gel), calcium silicate, aluminosilicate compound, high silica zeolite (hydrophobic zeolite), sepiolite, cancrinite , Zeolite, and inorganic porous materials such as hydrated zirconium oxide; silver-supported zeolite, silver-supported cancrinite, silver-supported porous styrene-divinylbenzene-vinylpyridine polymer, and vinyl-supported silver divinylbenzene-vinylpyridine polymer Pyridine co Coalescence, include a metal-supported porous such, it preferably contains at least one selected from the group consisting of.
  • the viewpoint of improving the deodorizing performance it is preferable from the viewpoint of improving the deodorizing performance to contain at least one selected from the group consisting of activated carbon, an aluminosilicate compound and a vinylpyridine copolymer.
  • One of these porous particles may be used alone, or two or more thereof may be used in combination.
  • the combined use of the organic porous particles and the inorganic porous particles is more effective in that various odorous components can be collected at one time.
  • the above-mentioned porous vinylpyridine copolymer include porous styrene-divinylbenzene-vinylpyridine polymer, porous divinylbenzene-vinylpyridine polymer and the like.
  • the silver-supported cancrinite is a cancrinite-like mineral described in paragraphs [0029] to [0045] of JP-A-2005-336363.
  • the term "organic porous particles” refers to particles having a porosity mainly composed of an organic compound, and the “inorganic porous particles” refers to particles having a porosity mainly composed of an inorganic compound. Points to be.
  • the BET specific surface area of the porous particles used in the present invention is preferably 50 m 2 / g or more, and more preferably 100 m 2 / g or more, from the viewpoint of expressing deodorizing performance more effectively. And more preferably 200 m 2 / g or more. Further, the upper limit of the BET specific surface area is not particularly limited, but it is practical to set it to 2000 m 2 / g or less. In addition, since the deodorizing performance becomes higher as the value of the BET specific surface area of the porous particles becomes larger, the larger the value of the BET specific surface area within the above range, the better.
  • the BET specific surface area can be measured by the multipoint method using liquid nitrogen using a specific surface area and pore distribution measuring apparatus “ASAP 2020” manufactured by Shimadzu Corporation, and a value can be derived in a range where the parameter C becomes positive. .
  • the mercury penetration method can be used for the measurement of pore distribution.
  • the porous particles used in the present invention have at least an average pore diameter of 0.1 nm or more, preferably 2 nm or more, and 50 nm or less Is more preferable, and 30 nm or less is even more preferable.
  • the pore diameter of the porous particles can be measured using a specific surface area / pore distribution measuring apparatus “ASAP 2020” manufactured by Shimadzu Corporation.
  • the shape of the porous particles is not particularly limited as long as the deodorizing effect is exhibited, and may be spherical, rod-like having a predetermined aspect ratio, needle-like, or an irregular shape such as a crushed shape.
  • the shape of the fine particles can be determined by observation using a scanning electron microscope “JCM-5100” manufactured by JEOL.
  • porous particles when using the aluminosilicate compound and vinyl pyridine copolymer, respectively its BET specific surface area, 1750m 2 / g approximately, 250 meters 2 / g approximately, 350 meters 2 /
  • the average pore diameter may be about 4.5 nm, about 20 nm, and about 10 nm, respectively.
  • the odor component derived from the excreted liquid such as urine and menstrual blood to be deodorized is a mixture of a plurality of components such as ammonia, amines, fatty acids, hydrogen sulfide and mercaptans.
  • a plurality of odorous components can be effectively adsorbed by using porous particles having an average pore diameter of 2 nm or more as a deodorant. it can.
  • the content of porous particles can be reduced while maintaining high deodorizing performance. So preferred.
  • the deodorizing performance is further improved, and the content of the porous particles can be further reduced. preferable. This is combined with the reduction of the content of the porous particles by the combination with the above-mentioned cationic antibacterial agent, and the sustained and effective antibacterial action and deodorizing action, and the improvement of the texture of the core wrap, This makes it possible to improve the wearing feeling when incorporated in the absorbent article 1.
  • the basis weight of the porous particles contained in the core wrap from the viewpoint of obtaining suitably a deodorizing effect, 0.05 g / m 2 or more preferably, 0.1 g / m 2 or more preferably, 0.5 g / m 2 or more Is more preferred.
  • the upper limit thereof is preferably 5 g / m 2 or less, more preferably 3 g / m 2 or less, and still more preferably 1.0 g / m 2 or less, from the viewpoint of suppressing the reduction in texture of the core wraps 41A and 41B.
  • a further deodorizing function can also be added by surface treatment.
  • activated carbon can be equipped with a deodorizing function by chemical adsorption to a sulfur-based gas by zinc chloride (ZnCl) activation.
  • ZnCl zinc chloride
  • the aluminosilicate compound can provide an antibacterial action by supporting zinc and the vinylpyridine copolymer can support silver.
  • the core wrap of the napkin 1 can further contain a water-soluble pH buffer as a deodorant.
  • the pH buffer is an agent that neutralizes the acidic or alkaline odorous components generated in the liquid phase such as waste liquid and reduces the change in pH. That is, it is a neutralization deodorant by equilibrium action.
  • Such an agent is not particularly limited, and examples thereof include weak acids and their conjugate bases, or mixtures thereof or salts thereof, weak bases and their co-liquid acids, or mixtures thereof or salts thereof.
  • the water-soluble pH buffer citric acid and the like can be mentioned as the weak acid, and metal salts such as Na, K, Ca and the like can be mentioned as the salt thereof.
  • weak bases include polyhydroxyamine compounds such as tris (hydroxymethyl) aminomethane.
  • the pH buffer used in the present invention only needs to contain at least one component that neutralizes either an acidic or alkaline odor component, and it is not necessary to simultaneously neutralize all of the acidic and alkaline odor components.
  • odors such as amines and ammonia which are alkaline odorous components can be neutralized and deodorized.
  • a salt of citric acid is formed due to the neutralization of citric acid and the alkaline odor component, and a pH buffering action occurs secondary to the formation of citrate.
  • one containing citric acid and tris (hydroxymethyl) aminomethane as a pH buffer is preferable.
  • the combination of a weak acid and a weak base component not only smells from acidic and alkaline odorous components, but also odors near neutrality that could not be suppressed only by pH deodorants. , Can strongly suppress the production of odor.
  • the absorbent article 1 using the core wrap containing these pH buffers is hardly noticeable of the odor derived from the excretory fluid around the wearer, even when the wear lasts for a long time A high degree of deodorizing effect can be realized.
  • the basis weight of the pH buffer is 0.05 g / m from the viewpoint of effectively neutralizing and deodorizing the odor derived from the acidic and alkaline odorous components continuously generated from the excretory fluid of the absorbent article over a long period of time. 2 or more is preferable, 0.1 g / m ⁇ 2 > or more is more preferable, 0.15 g / m ⁇ 2 > or more is still more preferable.
  • the upper limit is not particularly limited, but from the viewpoint of production cost, 2.0 g / m 2 or less is preferable, 1.0 g / m 2 or less is more preferable, and 0.5 g / m 2 or less is still more preferable.
  • the basis weight of the pH buffer can be measured using a known ion chromatography analysis method or the like.
  • anions such as phosphoric acid, alkanolamines, etc.
  • Qualitative analysis by Dionex ICS-2100 Thermo Fisher Scientific Co., Ltd., conductivity detector, gradient elution method
  • measurement of the contained basis weight can be performed.
  • the core wrap covers the skin side and the non-skin side of the absorbent core from the viewpoint of reducing the residual amount of odor component on the skin side in the napkin 1 and obtaining a deodorizing effect continuously, and the non-skin side of the absorbent core
  • the core wrap comprises a cationic antimicrobial agent
  • the core wrap covering the skin side comprises a water soluble pH buffer and porous particles.
  • At least the core wrap 41B covering the non-skin side of the lower layer absorbent core 40B contains a cationic antibacterial agent, and the core wrap 41A covering the skin side of the upper layer absorbent core 40A is water soluble If the pH buffer and the porous particles are included, the effect of the present invention is exhibited.
  • the core wrap 41B covering the skin side of the lower absorbent core 40B and the non-skin side of the upper absorbent core 40A
  • the skin side of the lower absorbent core 40B is covered
  • the core wrap 41B further includes a water-soluble pH buffer and porous particles
  • the core wrap 41A covering the non-skin side of the upper absorbent core 40A preferably further includes a cationic antibacterial agent from the viewpoint of the deodorizing effect.
  • the cationic antibacterial agent and the porosity described above are widely used from the viewpoint of broadly and strongly suppressing the generation of odors derived from various odorous components and the generation of bacteria causing the odor generation. It is preferred to use one which contains all of the particles and pH buffer. Among them, it is more preferable to use a combination of an organic cationic antibacterial agent, an organic porous particle, an inorganic porous particle and a pH buffer.
  • the method for incorporating the above-mentioned deodorant into the core wrap is not particularly limited.
  • an organic deodorant and / or a pH buffer is contained as a deodorant, for example, the deodorant dissolved and mixed in water or an organic solvent is applied to the core wrap, sprayed or dipped, and dried.
  • porous particles are used as the deodorant, they can be contained in the core wrap by adhering the porous particles to the hydrophilic fibers that are the constituent fibers of the core wrap.
  • the following mechanism can be considered as a mechanism to obtain a sustained deodorizing effect.
  • the consolidated portion 8 shown in FIGS. 1 and 2 is more likely to absorb more waste fluid.
  • the waste fluid absorbed by the consolidation portion 8 is easily transferred smoothly to the bottom portion 82 side which is the non-skin surface side of the absorber 4 according to the gravity. Since the bottom portion 82 including the non-skin side core wrap is present below the consolidation portion 8, the excretory fluid is easily transferred to the non-skin side along the core wrap. As a result of contact between the excrement fluid and the deodorant present in the non-skin side core wrap, the deodorizing effect of the excrement fluid can be expressed from the early stage of wearing the absorbent article 1.
  • the deodorizing effect is enhanced. Furthermore, since the excrement fluid is distributed to the part that transfers to the non-skin side core wrap through the consolidation part 8 and the part that diffuses the absorbent core in the plane direction and the thickness direction, a large amount of non-excretory fluid is discharged at one time. It becomes difficult to reach the core wrap on the side of the skin. For this reason, the deodorizing effect is easy to maintain over a long period of time.
  • the excretory fluid should be in direct contact with the skin side core wrap 41 to exert the deodorizing effect.
  • the core wrap 41 on the non-skin surface side and the excretory fluid are easily in contact at the bottom portion 82, the excretory fluid is easily in contact with the deodorant, and the deodorizing effect is further enhanced.
  • a cationic antibacterial agent as a deodorant, even when the absorbent article 1 of the present invention is worn over a long period of time, generation and growth of bacteria causing odor can be suppressed, and odor causing material is generated. Is preferable because it can suppress In particular, when the antibacterial agent is contained in the non-skin side core wrap 41, contact with the non-skin side core wrap 41 present in the bottom portion 82 is facilitated, and the generation of odor causing substances can be suppressed.
  • the cationic antibacterial agent is contained in the non-skin surface side core wrap 41 and the water-soluble pH buffer and porous particles are contained in the skin surface side core wrap 41, excretion on the skin side is eliminated.
  • the porous particles in contact with the liquid adsorb the odorous component, and the pH buffer dissolves in the excretory fluid to neutralize the odorous component, and reaches the core wrap 41 on the non-skin surface side via the consolidation portion 8.
  • the residual amount of the odor component can be reduced particularly on the skin side, and the deodorizing effect can be obtained continuously.
  • the excretory fluid permeates from the core wrap 41B located at the bottom portion 82 of the consolidation portion 8 and easily transfers to the lower layer absorbent body 4B present on the non-skin side.
  • the deodorizing effect can be expected over both the core wrap 41A covering the skin side of the absorber 4 and the core wrap 41B covering the non-skin side, and deodorization is likely to occur at a position far from the skin.
  • the density of the high basis weight area of the absorber 4 is higher than that of the low basis weight area lower in basis weight than that of the high basis weight area located around the high basis weight area It becomes easy to be absorbed. Since the portion other than the consolidation part 8 in the high basis weight region has a structure in which the density is lower than that of the consolidation part 8, absorption of the excretory fluid from the consolidation part 8 in particular is quickened, Contact with the waste fluid makes it easier to suppress the generation of odor on the skin side.
  • FIG. 3 the same members as in FIGS. 1 and 2 are denoted by the same reference numerals.
  • the napkin 1 has a single layer of absorbent 4.
  • the absorbent body 4 is composed of an absorbent core 40 and a core wrap 41 which wraps the absorbent core 40, and is sandwiched between the non-skin surface sheet 3 and the skin sheet 2 having irregularities arranged on the skin surface side. ing.
  • the skin sheet 2 is joined to the non-skin sheet 3 via the side sheet 9, and the peripheral seal portion is formed by joining the side sheet 9 and the non-skin sheet 3.
  • the skin sheet 2 and the non-skin sheet 3 are joined via the side sheets 9, but as in the first embodiment, the skin sheet 2 and the non-skin surface
  • the sheet 3 may be directly joined to form a peripheral seal portion.
  • the absorbent body 4 is formed with a cavity 81 projecting from the non-skin side of the core wrap 41 toward the skin side, and corresponds to the upper side of the bottom 82 formed by the cavity 81.
  • the absorbent material of the absorbent core 40 has a compressed section 8.
  • the absorber 4 has the recessed part 83 indented toward the non-skin side from the skin side of the absorber 4 in the position which overlaps with the consolidation part 8 in a thickness direction. That is, the consolidation portion 8 is formed between the bottom portion 82 formed by the hollow portion 81 and the recessed portion 83.
  • the compacted portion 8, the hollow portion 81 and the bottom portion 82 can be formed by pin embossing the absorber 4 from the non-skin side to the skin side.
  • the depressions 83 can be formed at the positions corresponding to the consolidated portions 8 by appropriately adjusting the conditions for applying the pin embossing, the basis weight of the absorbent core, and the like.
  • the consolidation portion 8 and the recess portion 83 are provided only at one central portion in the width direction Y, a plurality of the consolidation portions 8 and the recess portion 83 are formed at predetermined intervals in the longitudinal direction X. It may be done.
  • the excretory fluid can be guided to the dent portion 83 by gravity and can be more easily absorbed by the consolidation portion 8.
  • pressure force applied in the thickness direction of the surface sheet 2
  • the recessed portion 83 is less likely to be compressed than the other portions.
  • the contact efficiency between the excrement fluid and the deodorant contained in the core wrap 41 and the core wrap 41 can be further enhanced due to the induction of the excretory fluid to the consolidating portion 8 by the recessed portion 83, and as a result, The deodorizing effect of the deodorant can be suitably exhibited.
  • the napkin 1 in the second embodiment is, as shown in FIG. 3, pressed from the skin sheet 2 side of the absorbent body 4 to the non-skin sheet 3 side on both sides of the consolidation part 8 with respect to the lateral direction Y in the middle part 1B.
  • a pair of pressing portions 5 and 5 may be provided.
  • the waste liquid is also non-skin side surface of the absorbent 4 due to the depression of the pressing part 5 It is easier to In the pressing portion 5, since the bottom portion and the non-skin side surface of the core wrap 41 are close to each other, high deodorizing effect can be expected on the non-skin surface side of the absorber 4 similarly to the consolidation portion 8.
  • the pressing portion 5 in the second embodiment is formed as a leak-proof groove 5 extending in the longitudinal direction X across the front portion 1A, the middle portion 1B and the rear portion 1C, as in the embodiment shown in FIG. If it is, since the excrement fluid led to the non-skin side of the absorber 4 in the middle part 1B spreads in the longitudinal direction X along the leakproof groove 5 and deodorizes, contact between the core wrap 41 and the excrement fluid As a result, it is possible to more effectively suppress the occurrence of odor.
  • the present invention has been described above based on its preferred embodiments, the present invention is not limited to the embodiments.
  • the consolidation portion 8 is formed only in the high basis weight region, but additionally or alternatively, the consolidation portion is located in the low basis weight region located around the high basis weight region. 8 may be formed.
  • the skin sheet of the napkin 1 in 2nd Embodiment had the unevenness
  • Each of the embodiments described above relates to a napkin as the absorbent article 1.
  • the invention is also applicable to other absorbent articles such as disposable diapers, incontinence pads, panty liners and the like.
  • the absorbent article which can exhibit the deodorizing performance continuously 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)

Abstract

La présente invention concerne un article absorbant (1) pourvu d'une feuille côté peau (2), d'une feuille côté non peau (3), et d'un corps absorbant (4) disposé entre les feuilles. Le corps absorbant (4) a un noyau absorbant (40) et une enveloppe de noyau (41) qui recouvre la surface côté non-peau du noyau absorbant (40). Le corps absorbant (4) est pourvu d'une partie cavité creuse (81) qui a une ouverture sur le côté non peau de celle-ci et une section inférieure (82) sur le côté peau. La section inférieure (82) forme une section compactée de haute densité (8) du noyau absorbant (40). L'enveloppe de noyau (41) contient un déodorant.
PCT/JP2017/027345 2017-07-27 2017-07-27 Article absorbant WO2019021444A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022219832A1 (fr) * 2021-04-12 2022-10-20 株式会社リブドゥコーポレーション Article absorbant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001353174A (ja) * 2000-06-16 2001-12-25 Kao Corp 吸収性物品
JP2016120192A (ja) * 2014-12-25 2016-07-07 花王株式会社 吸収性物品
JP2016169446A (ja) * 2015-03-11 2016-09-23 花王株式会社 薄葉紙
JP2017086621A (ja) * 2015-11-12 2017-05-25 花王株式会社 吸収性物品

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Publication number Priority date Publication date Assignee Title
JP3950098B2 (ja) * 2003-09-30 2007-07-25 大王製紙株式会社 吸収性物品
JP5105884B2 (ja) * 2007-01-17 2012-12-26 花王株式会社 吸収性物品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001353174A (ja) * 2000-06-16 2001-12-25 Kao Corp 吸収性物品
JP2016120192A (ja) * 2014-12-25 2016-07-07 花王株式会社 吸収性物品
JP2016169446A (ja) * 2015-03-11 2016-09-23 花王株式会社 薄葉紙
JP2017086621A (ja) * 2015-11-12 2017-05-25 花王株式会社 吸収性物品

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022219832A1 (fr) * 2021-04-12 2022-10-20 株式会社リブドゥコーポレーション Article absorbant

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