WO2016031749A1 - Papier hygiénique fin et article absorbant utilisant celui-ci - Google Patents

Papier hygiénique fin et article absorbant utilisant celui-ci Download PDF

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Publication number
WO2016031749A1
WO2016031749A1 PCT/JP2015/073669 JP2015073669W WO2016031749A1 WO 2016031749 A1 WO2016031749 A1 WO 2016031749A1 JP 2015073669 W JP2015073669 W JP 2015073669W WO 2016031749 A1 WO2016031749 A1 WO 2016031749A1
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Prior art keywords
paper
sanitary thin
thin paper
sheet
metal
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PCT/JP2015/073669
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English (en)
Japanese (ja)
Inventor
かおり 山邊
金野　晴男
村田　剛
克 水口
Original Assignee
日本製紙株式会社
日本製紙クレシア株式会社
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Application filed by 日本製紙株式会社, 日本製紙クレシア株式会社 filed Critical 日本製紙株式会社
Priority to CN201580045341.3A priority Critical patent/CN106715798B/zh
Priority to JP2016545513A priority patent/JP6681335B2/ja
Priority to KR1020197033207A priority patent/KR102151693B1/ko
Priority to KR1020177003781A priority patent/KR20170035940A/ko
Publication of WO2016031749A1 publication Critical patent/WO2016031749A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • 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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F2013/51002—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres
    • A61F2013/51019—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres being cellulosic material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F2013/5109—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with odour control
    • 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
    • A61F2013/5315—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 with a tissue-wrapped core
    • 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
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control

Definitions

  • the present invention relates to a sanitary thin paper having a deodorizing function and an absorbent article using the sanitary thin paper.
  • ⁇ ⁇ Various deodorizing functions are given to sanitary thin paper such as tissue paper, toilet paper, and hand towels.
  • sanitary thin paper such as tissue paper, toilet paper, and hand towels.
  • techniques for applying a chemical solution having a deodorizing function to base paper are disclosed (Patent Documents 1 and 2).
  • zeolite is supported inside cellulose fibers and Ag, Cu, etc. are supported in the zeolite, and paper is made from the cellulose fibers to impart a deodorizing function to the paper itself (trade name).
  • Cellgaia registered trademark
  • Patent Document 3 Patent Document 3
  • an object of this invention is to provide the sanitary thin paper which has the outstanding deodorizing function, and an absorbent article using the same.
  • the sanitary thin paper of the present invention is made of Ag, Au, Pt, Pd, Ni, Mn, Fe, Ti, Al, Zn, and oxidized cellulose fibers having a carboxyl group or a carboxylate group on the surface.
  • Metal ion-containing cellulose fibers containing ions of one or more metal elements selected from the group of Cu are included.
  • the content of the metal ions with respect to the oxidized cellulose fiber is preferably 10 to 60 mg / g, and particularly preferably 15 to 50 mg / g.
  • the absorbent article of the present invention includes an absorbent core, a core wrap sheet that covers or is laminated on the absorbent core, and a liquid-permeable outer layer sheet that covers at least one surface of the core wrap sheet.
  • the core wrap sheet is the above-mentioned sanitary thin paper.
  • a sanitary thin paper having an excellent deodorizing function and an absorbent article using the sanitary thin paper can be obtained.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • the sanitary thin paper according to the embodiment of the present invention is selected from the group of Ag, Au, Pt, Pd, Mn, Fe, Ti, Al, Zn and Cu with respect to the oxidized cellulose fiber having a carboxyl group or a carboxylate group on the surface.
  • a method for producing sanitary thin paper in addition to a method of bringing the metal compound aqueous solution into contact with a sheet made of a raw material containing oxidized cellulose fibers, metal oxides are previously contained in oxidized cellulose fibers, A method for producing a raw material containing the metal ion-containing cellulose fiber can be exemplified.
  • the oxidized cellulose fiber can be produced by oxidizing cellulose fiber such as wood pulp using an N-oxyl compound as a catalyst.
  • an oxidized cellulose fiber having a carboxyl group or a carboxylate group on the surface is obtained.
  • the raw material cellulose is preferably natural cellulose.
  • the oxidation reaction is preferably performed in water. Although the density
  • the amount of the N-oxyl compound may be about 0.1 to 4 mmol / L with respect to the reaction system. A known cooxidant may be used for the reaction.
  • Examples of the co-oxidant include dihalous acid or a salt thereof.
  • the amount of the co-oxidant is preferably 1 to 40 mol with respect to 1 mol of the N-oxyl compound.
  • the reaction temperature is preferably 4 to 40 ° C., more preferably room temperature.
  • the pH of the reaction system is preferably 8-11.
  • the degree of oxidation can be appropriately adjusted depending on the reaction time, the amount of N-oxyl compound, and the like.
  • the oxidized cellulose fiber thus obtained has acid groups on the surface and almost no acid groups inside. This is presumably because the cellulose fiber is crystalline, so that the oxidant hardly diffuses into the fiber.
  • the carboxyl group refers to a group represented by —COOH
  • the carboxylate group refers to a group represented by —COO 2 — .
  • the counter ion of the carboxylate group in producing the oxidized cellulose fiber is not particularly limited. Then, metal ions to be described later are ion-bonded to the carboxylate group replacing the counter ions. In addition, the carboxyl group seems to coordinate with a metal ion such as a copper ion.
  • the carboxyl group or carboxylate group is also referred to as an “acid group”.
  • the content of acid groups can be measured by the method disclosed in paragraph 0021 of JP-A-2008-001728.
  • the amount of acid groups in the cellulose fiber is preferably 0.2 to 2.2 mmol / g.
  • the amount of acid groups is less than 0.2 mmol / g, the amount of metal ions present on the surface of the cellulose fiber is not sufficient, and the deodorizing function may be inferior. If the amount of acid groups exceeds 2.2 mmol / g, the freeness of the sanitary thin paper may be deteriorated and the dehydration load may be increased.
  • an aqueous solution containing the metal compound is brought into contact with the oxidized cellulose fiber, and metal ions derived from the metal compound form an ionic bond with the carboxylate group.
  • the carboxyl group is ionized and ionically bonds with the metal ion via the carboxylate group, or is coordinated with the metal ion as described above.
  • the metal compound aqueous solution is an aqueous solution of a metal salt.
  • metal salts include complexes (complex ions), halides, nitrates, sulfates, and acetates.
  • the metal salt is preferably water-soluble.
  • a cellulose fiber dispersion prepared in advance and a metal compound aqueous solution may be mixed, and a dispersion containing cellulose fibers is applied onto a substrate to form a film, and the metal compound is applied to the film.
  • An aqueous solution may be added and impregnated. At this time, the film may remain fixed on the substrate or may be peeled from the substrate.
  • the concentration of the aqueous metal compound solution is not particularly limited, but is preferably 0.2 to 2.2 mmol and more preferably 0.4 to 1.8 mmol with respect to 1 g of cellulose fiber. You may adjust suitably the time which a metal compound is made to contact.
  • the temperature at the time of contact is not particularly limited, but 20 to 40 ° C. is preferable.
  • the pH of the liquid at the time of contacting is not particularly limited. However, when the pH is low, it becomes difficult for metal ions to bind to the carboxyl group, so 7 to 13 is preferable and pH 8 to 12 is particularly preferable.
  • the oxidized cellulose fiber contains (coordinates) metal ions can be confirmed by a scanning electron microscopic image and ICP emission analysis of the extract with a strong acid. That is, the presence of metal ions cannot be confirmed in the scanning electron microscope image, while it can be confirmed that the metal ions are contained in the ICP emission analysis.
  • the metal particles can be confirmed by a scanning electron microscope image, so the presence or absence of metal ions can be determined.
  • the presence or absence of metal ions can also be determined by scanning electron microscope images and element mapping. That is, metal ions cannot be confirmed in a scanning electron microscope image, but the presence of metal ions can be confirmed by elemental mapping.
  • metal particles do not have to be bonded to all of the acid groups of the cellulose fiber, and the remaining acid groups can neutralize odorous components such as ammonia and exhibit a deodorizing function.
  • Sanitary thin paper is made from papermaking raw materials containing cellulose fibers.
  • a papermaking raw material other than the cellulose fiber for example, virgin pulp such as softwood pulp (NBKP) or hardwood pulp (LBKP), or used paper pulp regenerated from used paper can be used. These pulps are appropriately blended in predetermined types and blending ratios according to the required quality of sanitary paper.
  • Various chemicals may be added (internally added) to the papermaking raw material for the required quality and stable operation. These chemicals include softeners, bulking agents, dyes, dispersants, wet paper strength enhancers, and drying agents. Examples thereof include paper strength agents, drainage improvers, pitch control agents, yield improvers, and the like.
  • the content ratio of the metal ion-containing cellulose fibers in the sanitary thin paper is preferably 3 to 30 wt%, and more preferably 5 to 15 wt%.
  • the sanitary thin paper may be composed only of the metal ion-containing cellulose fibers, but the dehydration load during paper making may increase.
  • the basis weight of the obtained sanitary thin paper can be set to 7 to 40 g / m 2 , for example. Further, as the strength of the sanitary thin paper, the GMT value ⁇ (DMD ⁇ DCD) 1/2 ⁇ can be set to 60 to 420 (N / m). DMD and DCD are the tensile strengths in the MD direction and CD direction when drying sanitary thin paper, respectively, and are measured according to JIS P8113. However, the sample width at the time of measurement is 25 mm, and the unit of DMD and DCD is “N / m”.
  • the sanitary paper according to the embodiment of the present invention can be manufactured by a known papermaking method.
  • a papermaking raw material obtained by appropriately mixing metal ion-containing cellulose fibers (or oxidized cellulose fibers before containing metal ions) and pulp is supplied from a raw material tank, and further diluted with white water to prepare a paper stock.
  • This debris is degassed for screening and sent to the stock inlet with a fan pump.
  • the stock inlet supplies paper with a proper concentration, speed, and angle over the entire wire width of the paper machine, with a uniform, floc-free (small lump), and well-dispersed fiber so as not to cause flow streaks. To do.
  • the stock inlet there are a head box, a pressurization type, a hydraulic type, etc. which are installed in a high place with the atmosphere open, and any of them may be adopted. Then, a stock is jetted from the stock inlet between the wire and the felt to form a sheet (web, wet paper) on the felt.
  • the web formed between the wire and the felt is closely transferred to the Yankee dryer by a pressure roll.
  • the web is dried by a Yankee dryer and a Yankee dryer hood, peeled off from the Yankee dryer while being creped by a creping doctor, and wound on a reel via a reel drum.
  • a Yankee dryer is a drum made of cast iron or cast steel for drying a web, and its outer diameter is generally 2.4 to 6 m.
  • creping is a method in which a paper is mechanically compressed in the longitudinal direction (machine traveling direction) to form a wavy wrinkle called crepe, and the bulk (feeling of bulk), softness, water absorption on sanitary paper. Properties, surface smoothness, aesthetics (crepe shape) and the like.
  • a crepe is formed by the creping doctor due to the speed difference between the Yankee dryer and the reel (reel speed ⁇ yankee dryer speed).
  • the crepe characteristics depend on the speed difference, if the basis weight of the base paper on the Yankee dryer is 7 to 40 g / m 2 , the basis weight on the reel is approximately 9 to 50 g / m 2 . It becomes larger than the above basis weight.
  • the crepe rate based on the speed difference between the Yankee dryer and the reel is defined by the following equation.
  • Crepe rate (%) 100 x (Yankee dryer speed (m / min)-reel speed (m / min)) ⁇ reel speed (m / min)
  • the quality of the crepe and the operability of the creping are substantially determined by the crepe rate.
  • the crepe rate is preferably in the range of 10 to 50%.
  • FIG. 1 is an external view of an absorbent article (pants-type paper diaper) 200 according to the first embodiment of the present invention.
  • the absorbent article 200 includes a water absorbent article main body 20 having water absorption, and an exterior body 100 that holds the water absorbent article main body 20 inside and forms a pants shape.
  • the exterior body 100 can be made of a nonwoven fabric made of a thermoplastic resin such as polypropylene, polyester, or polyethylene and manufactured by a spunbond or air-through manufacturing method.
  • the exterior body 100 is preferably configured by laminating two or more sheets having at least an exterior sheet and an interior sheet.
  • the water-absorbent article main body 20 is elongated, the width near the center in the longitudinal direction is slightly narrower, and is disposed between the crotch of the absorbent article 200.
  • FIG. 2 is a cross-sectional view of the water absorbent article main body 20 taken along the line AA in FIG.
  • the water absorbent article main body 20 includes a liquid-permeable hydrophilic surface sheet (top sheet, outer layer sheet) 2 that forms a body contact side surface (upper surface in FIG. 2), a liquid-impermeable back sheet 6, and a hydrophilic It arrange
  • the absorbent cores 4a and 4b are covered with core wrap sheets 10a and 10b, respectively.
  • both side portions of the water absorbent article main body portion 20 stand up as a three-dimensional gather 30 composed of a water-repellent side sheet to prevent side leakage of urine and the like.
  • the absorbent cores 4a and 4b respectively covered with the core wrap sheets 10a and 10b are laminated so that the absorbent core 4a faces the hydrophilic surface sheet 2 side, and the width of the absorbent core 4a.
  • the width of the absorbent core 4b is about 1 ⁇ 2 compared to FIG.
  • One absorbent core and one core wrap sheet for wrapping the absorbent core may be provided for each water absorbent article main body 20.
  • the hydrophilic surface sheet 2 is made of a non-woven fabric and comes into contact with the wearer's skin.
  • an air-through nonwoven fabric, a point bond nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, or the like made of a synthetic fiber such as polypropylene, polyethylene, or polyester can be used.
  • an air-through nonwoven fabric with a small liquid return amount is suitable.
  • the back sheet 6 only needs to be formed from a liquid-impermeable material having a waterproof property so that liquid or the like held in the water-absorbent article main body 20 does not leak into the underwear, such as a breathable polyethylene film.
  • a moisture-permeable film may be used as the back sheet 6 to reduce stuffiness.
  • the absorbent cores 4a and 4b can be formed by mixing hydrophilic fibers (fluff) such as wood fluff pulp and particles of super absorbent polymer (SAP). Moreover, you may use what is called a SAP sheet which made SAP a sheet form. As the hydrophilic fiber, synthetic fiber, polymer fiber, or the like may be used instead of the wood pulp fluff. Moreover, you may mix
  • the core wrap sheets 10a and 10b will be described.
  • the absorbent article which concerns on embodiment of this invention, it has the outstanding deodorizing function by using the sanitary paper of this invention mentioned above for the core wrap sheets 10a and 10b.
  • the core wrap sheets 10a and 10b have sufficient strength, an absorbent article in which the core wrap sheet is less likely to be twisted or torn is obtained.
  • an absorptive article is not restricted to the above-mentioned underpants type paper diaper, for example, it is a long and slender piece like a sanitary napkin, and the type which hits a local part may be sufficient.
  • the liquid-permeable outer layer sheet 2 covers only one surface (body contact side surface) of the absorbent core 4a. However, both surfaces of the absorbent core are covered with the liquid-permeable outer layer sheet, and the absorbent article. It may be possible to absorb urine and the like from both the front and back surfaces.
  • the core wrap sheet is not limited to the one covering the absorbent core, and may be used by being laminated on the surface of the absorbent core. When a plurality of absorbent cores are stacked, a core wrap sheet may be interposed between the absorbent cores. Moreover, the absorbent article which concerns on embodiment of this invention can also be applied to the sheet
  • TEMPO oxidized cellulose fibers Production of metal ion-containing cellulose fiber> Softwood bleached kraft pulp is used as the raw material pulp. To this, 0.2 g of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) is added with 2 g of sodium hypochlorite as a co-oxidant. The mixture was stirred at room temperature for 2 hours to carry out an oxidation reaction to obtain a dispersion of oxidized cellulose fibers (TEMPO oxidized cellulose fibers). This TEMPO oxidized cellulose fiber has a carboxyl group or a carboxylate group on its surface.
  • TEMPO oxidized cellulose fibers This TEMPO oxidized cellulose fiber has a carboxyl group or a carboxylate group on its surface.
  • Table 1 shows the acid group amount (per gram of oxidized cellulose fiber) of the TEMPO oxidized cellulose fiber before containing metal ions.
  • a metal salt (CuCl 2 ) aqueous solution having a pH and concentration (per gram of oxidized cellulose fiber) shown in Table 1 was added to the TEMPO oxidized cellulose fiber obtained by the above operation and stirred. Thereby, Cu ions were contained in the oxidized cellulose fiber and washed to remove unreacted metal salts.
  • Table 1 shows the content of metal ions with respect to the oxidized cellulose fiber.
  • Example 9 an AgNO 3 aqueous solution was used as the metal salt aqueous solution, and Ag was contained instead of Cu ions. Thus, it was confirmed in Examples 1 to 9 that metal ion-containing cellulose fibers can be produced.
  • Example B Production of sanitary thin paper and core wrap sheet> Next, the metal ion-containing cellulose fiber of Example 1 and pulp (NBKP and LBKP) were blended at a blending ratio shown in Table 2 to prepare a pulp slurry, and paper making was performed, and sanitary thin paper of Examples B1 to B4. (Tissue paper, toilet paper, paper towel) and the core wrap sheets of Examples B1 to B6 were produced.
  • the sanitary thin paper and the core wrap sheet of Examples B1 to B4 have the same composition.
  • the sanitary thin paper sheet of Example B1 (oxidized cellulose fiber containing Cu ions) was further impregnated with 200 ppm of a reducing agent solution, and the filter paper was overlaid to remove excess aqueous solution. It dried with the ventilation dryer for 15 minutes, Cu ion in a sanitary thin paper sheet was reduce
  • a commercially available metal (Cu and Ag) -containing metal-supported zeolite high-density crystallized pulp (trade name Sergaia (registered trademark)) was blended with NBKP at a ratio shown in Table 2, and paper was made to make tissue paper. And a core wrap sheet was manufactured.
  • the sanitary thin paper and core wrap sheet of Examples B1 to B6 contain metal ions in the oxidized cellulose fiber, while the sanitary thin paper and core wrap sheet of Comparative Example 1 It can be seen that the metal ions contained in the oxidized cellulose fiber were reduced to metal particles.
  • the obtained sanitary thin paper and core wrap sheet were evaluated as follows.
  • the tensile strength of MD direction and CD direction at the time of drying is represented by DMD and DCD, respectively.
  • the tensile strength (WMN) in the MD direction when the obtained sanitary thin paper and core wrap sheet were wet was measured according to JIS P8135. The sample width was 25 mm. In the case of toilet paper, measurement was performed with four samples stacked.
  • a saturated gas of an aqueous ammonia solution (2 mL of ammonia water: 2 mL of water) was inserted into a gas bag with a cock containing four test pieces of 5 cm ⁇ 5 cm with a 1.2 mL syringe, and 1.5 L of air was filled with an air pump.
  • the saturated gas was collected from the gas phase in a sealed container containing an aqueous ammonia solution.
  • the ammonia gas concentration in the gas bag after filling with saturated gas and air was 80 to 90 ppm.
  • the suction tube and the rubber tube were connected to the detection tube, and the rubber tube was connected to the gas bag.
  • Table 1 shows the results of sanitary thin paper (tissue paper, toilet paper, paper towel), and Table 3 shows the results of the core wrap sheet.
  • ⁇ Experiment C Tensile strength and tear length of core wrap sheet>
  • a pulp slurry using NBKP which is a general pulp (cellulose fiber), Cu ion-containing cellulose fiber of Example 1 and the metal-supported zeolite high-density crystallized pulp (trade name Sergaia (registered trademark)), respectively, is square.
  • Sheets 1 to 3 having a basis weight of 18 ⁇ 0.5 g / m 2 were prepared by paper making with a hand machine. The paper strength enhancer was not added. Sheets 1 and 2 were made with NBKP and Cu ion-containing cellulose fibers as 100%.
  • Sheet 3 was paper-made with the same mixing ratio of metal-supported zeolite high-density crystallized pulp (trade name Sergaia (registered trademark)) and pulp (NBKP) as in Comparative Example 2.
  • the sheet 2 has higher strength than the sheet 1. This is presumably because an action like beating treatment works in the production process of metal ion-containing cellulose fibers. Accordingly, the strengths of Examples B1 to B4, in which papermaking raw materials obtained by mixing general pulp (NBKP or the like) and metal ion-containing cellulose fibers are made, are the same as those obtained when general pulp is made. On the other hand, in the case of the sheet 3 containing 10 wt% of zeolite-supporting cellulose fibers, the strength was reduced by about 20% compared to the sheet 1.
  • the zeolite-supporting cellulose fibers contain a large amount of short fibers.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
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  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
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  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Paper (AREA)

Abstract

Le problème décrit par la présente invention est de proposer un papier hygiénique fin présentant une excellente fonction désodorisante, ainsi qu'un article absorbant utilisant celui-ci. La solution selon l'invention porte sur un papier hygiénique fin qui contient des fibres de cellulose contenant des ions métalliques, obtenues par incorporation d'ions d'au moins un type d'élément métallique, choisi parmi le groupe constitué d'Ag, Au, Pt, Pd, Ni, Mn, Fe, Ti, Al, Zn et Cu, dans des fibres de cellulose oxydée présentant des groupes carboxyle ou des groupes carboxylate sur leur surface.
PCT/JP2015/073669 2014-08-29 2015-08-24 Papier hygiénique fin et article absorbant utilisant celui-ci WO2016031749A1 (fr)

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KR1020197033207A KR102151693B1 (ko) 2014-08-29 2015-08-24 위생 박엽지 및 그것을 이용한 흡수성 물품
KR1020177003781A KR20170035940A (ko) 2014-08-29 2015-08-24 위생 박엽지 및 그것을 이용한 흡수성 물품

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EP3584364A4 (fr) * 2017-02-14 2020-01-15 Nippon Paper Industries Co., Ltd. Composition

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CN108049031A (zh) * 2018-01-11 2018-05-18 江苏科立隆非织造布科技有限公司 湿法多功能高速水刺复合生产线及生产所得水刺无纺布

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