WO2015046301A1 - Feuille de rétention de liquide et masque facial - Google Patents

Feuille de rétention de liquide et masque facial Download PDF

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Publication number
WO2015046301A1
WO2015046301A1 PCT/JP2014/075376 JP2014075376W WO2015046301A1 WO 2015046301 A1 WO2015046301 A1 WO 2015046301A1 JP 2014075376 W JP2014075376 W JP 2014075376W WO 2015046301 A1 WO2015046301 A1 WO 2015046301A1
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WO
WIPO (PCT)
Prior art keywords
liquid
fiber
retaining sheet
fibers
core
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PCT/JP2014/075376
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English (en)
Japanese (ja)
Inventor
和之 中山
徹 落合
宗訓 熊谷
純人 清岡
Original Assignee
クラレクラフレックス株式会社
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Filing date
Publication date
Application filed by クラレクラフレックス株式会社 filed Critical クラレクラフレックス株式会社
Priority to JP2015539299A priority Critical patent/JP6494518B2/ja
Priority to CN201480059103.3A priority patent/CN105814249B/zh
Priority to KR1020167010181A priority patent/KR102213970B1/ko
Publication of WO2015046301A1 publication Critical patent/WO2015046301A1/fr
Priority to HK16111290.6A priority patent/HK1223133A1/zh

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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D44/00—Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
    • A45D44/002—Masks for cosmetic treatment of the face
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43825—Composite fibres
    • D04H1/43828—Composite fibres sheath-core
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0208—Tissues; Wipes; Patches
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0212—Face masks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0241—Containing particulates characterized by their shape and/or structure
    • A61K8/027—Fibers; Fibrils
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8129—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers or esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers, e.g. polyvinylmethylether
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4309—Polyvinyl alcohol
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/65—Characterized by the composition of the particulate/core
    • A61K2800/654—The particulate/core comprising macromolecular material

Definitions

  • the present invention relates to a liquid retention sheet that can absorb a liquid component (liquid compound), and more particularly to a liquid retention sheet for a face mask that is impregnated with a liquid component including a cosmetic component or a medicinal component, and is applied to a skin.
  • a liquid component liquid compound
  • a liquid retention sheet for a face mask that is impregnated with a liquid component including a cosmetic component or a medicinal component, and is applied to a skin.
  • Patent Document 1 describes a solvent-spun cellulosic fiber having a fiber length of 30 to 60 mm as a water-containing sheet having a good touch and excellent water retention and release properties and form stability. And a core-sheath type composite fiber are woven with each other, wherein the core-sheath type composite fiber comprises a sheath part and a core part, and the sheath part is an ethylene-vinyl alcohol copolymer.
  • a nonwoven fabric sheet is disclosed in which the core is made of a hydrophobic resin and has a diameter of 5 to 15 ⁇ m. This document describes hot drawing for a method of manufacturing a core-sheath composite fiber, but does not describe specific conditions.
  • this non-woven sheet has excellent flexibility and liquid retention, but the stiffness (rigidity) of the sheet is small, and when it is pressed with a finger to bring the face mask into close contact with the face, the thickness is restored and the cosmetic liquid (cosmetics) ) Is slow to return. For this reason, it is difficult to efficiently spread the cosmetic liquid over the entire face.
  • the face mask it is necessary to press a finger on a portion where the cosmetic liquid is desired to be replenished or a portion where the close contact is difficult. Therefore, in the conventional face mask, the face mask is in close contact with the target portion, but the cosmetic liquid is insufficiently replenished.
  • a face mask in which a layer formed of ultrafine fibers is arranged on the skin contact side, or a three-dimensional A face mask having a special structure has also been developed.
  • the conformity to the skin is not sufficient, and the current situation is that the action of pressing and adhering the pasted face mask once with a finger is repeated. Therefore, by repeating the action of pressing on the skin, the essence stored in the pressed part is pushed out each time (exuding around the pressed part), and the insufficient condition of the essence is promoted. The result is.
  • an object of the present invention is to provide a liquid-retaining sheet and a face mask in which a liquid component quickly returns even when pressed with a finger in a state impregnated with a liquid component such as a cosmetic liquid (cosmetics).
  • Another object of the present invention is to provide a liquid-retaining sheet and a face mask that can be quickly recovered even when pressed with a finger in a state impregnated with a liquid component.
  • Still another object of the present invention is to provide a liquid retaining sheet and a face mask capable of efficiently replenishing cosmetic liquid to a desired site.
  • Another object of the present invention is to provide a liquid retaining sheet and a face mask which are excellent in flexibility, liquid retaining property, liquid releasing property and form stability.
  • the present inventors formed a non-woven fabric capable of absorbing a liquid component using a specific highly elastic fiber as a main fiber, and against compression in the thickness direction of the liquid retaining sheet. By controlling the repositioning, the present inventors have found that the liquid component can be quickly returned even when pressed with a finger in a state impregnated with a liquid component such as cosmetic liquid.
  • the liquid retaining sheet of the present invention is formed of a nonwoven fabric containing 50% by mass or more of high-elasticity fibers having a Young's modulus of 30 cN / T or more.
  • the highly elastic fiber may be a core-sheath type composite fiber.
  • the sheath part of the core-sheath composite fiber may be formed of an ethylene-vinyl alcohol copolymer, and the core part may be formed of a hydrophobic resin.
  • the hydrophobic resin may be a polyester resin.
  • the average fineness of the highly elastic fiber may be about 1.5 to 10 dtex.
  • the high elastic fiber may be a fiber obtained by stretching 2.4 times or more at a temperature of 80 ° C. or higher.
  • the nonwoven fabric may further contain cellulosic fibers having an average fineness of 0.3 to 5 dtex.
  • the liquid retention sheet of the present invention may be a skin care sheet (particularly a face mask) impregnated with a liquid component containing cosmetics. When the liquid retention sheet of the present invention is impregnated with 900% by mass of the cosmetic liquid with respect to its own weight and removed by applying a load of 260 g / cm 2 for 1 minute, the repositioning with respect to compression in the thickness direction is 60% or more in 5 minutes. It may be.
  • a specific high-elastic fiber is used as a main fiber to form a non-woven fabric capable of absorbing a liquid component, and the reversion of the liquid retaining sheet to compression in the thickness direction is controlled. Even when pressed with a finger in the state of impregnation, the liquid component returns quickly. Further, even when pressed with a finger in a state impregnated with a liquid component, the thickness recovery (compression elasticity in the thickness direction at the time of impregnation with a cosmetic liquid) is fast. Therefore, for example, when used as a face mask, the cosmetic liquid can be efficiently replenished (applied) to a desired part of the face. Furthermore, by using a core-sheath type composite fiber having a sheath part formed of an ethylene-vinyl alcohol copolymer, flexibility, liquid retention, liquid release property and shape stability can be improved.
  • the compression elasticity in the thickness direction at the time of impregnation of the cosmetic liquid means that the sheet impregnated with the cosmetic liquid is compressed (after being crushed) for a predetermined time and load. ), A characteristic (%) indicating how much the thickness of the crushed sheet is restored after the load is removed (return condition of the compressed sheet thickness).
  • FIG. 1 is a schematic diagram for explaining a method for measuring compressive elasticity in the thickness direction at the time of impregnation with a cosmetic liquid in Examples.
  • FIG. 2 is a schematic diagram for explaining a method of measuring liquid return to the original fabric in the example.
  • the liquid retaining sheet of the present invention is formed of a nonwoven fabric that can absorb a liquid component (particularly an aqueous liquid component).
  • the non-woven fabric is a liquid containing a cosmetic component or a medicinal component (for example, a moisturizing component, a cleansing component, an antiperspirant component, an aroma component, a whitening component, a blood circulation promoting component, a cooling component, an ultraviolet absorption component, a skin itch suppressing component, etc.) It has wettability necessary for impregnating components (liquid compounds) and voids for retaining liquids, and it covers the specified part of the body (for example, the face) without dripping even during handling.
  • the liquid retaining sheet (nonwoven fabric) of the present invention is excellent in liquid retaining properties and has an appropriate stiffness or elasticity, and when impregnated with a liquid component, the reversion to compression and the return of the liquid are fast.
  • the returnability of the liquid is excellent, and the thickness is also quickly recovered, so that it can be recovered in a short time in a liquid retaining state similar to the uncompressed portion.
  • the recovery to compression in the thickness direction is 60% or more in 5 minutes. (60 to 100%), preferably 65 to 99%, more preferably about 70 to 98%. If the repositioning is less than 60%, a liquid component such as a cosmetic liquid cannot sufficiently return to the pressing portion.
  • the decompression with respect to compression can be measured in detail by the method described in the examples described later.
  • the cosmetic liquid when the cosmetic liquid was impregnated with 900% by mass with respect to its own weight and the load of 620 g was applied to the circular portion having a diameter of 1.2 cm and removed for 1 minute, the cosmetic liquid after 5 minutes
  • the liquid return may be 55% or more (55 to 100%), preferably 60 to 99%, more preferably 65 to 98%, and still more preferably about 70 to 97%. If the liquid return is too low, the liquid component after pressing is insufficient, and the face mask cannot sufficiently penetrate the cosmetic liquid into the skin.
  • the liquid return of a cosmetic liquid can be measured by the method as described in the Example mentioned later.
  • Non-woven fabric is excellent in flexibility when wet, and fibers are properly intertwined so that it can follow the skin such as the face, and 30% elongation stress when wet according to JIS L1913.
  • it is, for example, about 0.5 to 10 N / 5 cm, preferably about 1 to 8 N / 5 cm, and more preferably about 1.5 to 5 N / 5 cm. If the stress at the time of elongation is too small, it will be too difficult to handle when it is attached to the skin such as the face, and if it is too large, the adhesion to the skin will be reduced.
  • the stress at 30% elongation in a wet state can be measured in detail by the method described in the examples described later.
  • the non-woven fabric is excellent in liquid holding ratio, and may have a water holding ratio of 800% or more in accordance with JIS L1907 7.2, for example, 900 to 3000%, preferably 950 to 2000%, Preferably, it is about 1000 to 1500%. If the water retention rate is too low, it will be difficult to supply a sufficient amount of cosmetic (beauty liquid) to the skin.
  • the basis weight of the nonwoven fabric is, for example, about 30 to 100 g / m 2 , preferably about 35 to 80 g / m 2 , and more preferably about 40 to 70 g / m 2 (particularly 50 to 65 g / m 2 ). If the basis weight is too small, it will be difficult to secure a void for the liquid retention formed by the fibers. On the other hand, when too large, since thickness will become large, the alongness to skin will fall. In addition, the amount of liquid retention increases, and many of the active ingredients remain in the liquid retention layer without reaching the skin, and the active ingredients are easily consumed wastefully.
  • the thickness of the nonwoven fabric can be selected from the range of about 100 to 3000 ⁇ m, and is, for example, about 200 to 2000 ⁇ m, preferably about 300 to 1500 ⁇ m, and more preferably about 400 to 1200 ⁇ m (particularly about 500 to 1000 ⁇ m).
  • the nonwoven fabric has high elasticity fibers having a Young's modulus (initial tensile resistance) of 30 cN / T or more (for example, about 40 to 500 cN) as a main fiber in order to have appropriate stiffness or elasticity.
  • the high modulus fiber may have a Young's modulus of about 30 to 100 cN / T (for example, 30 to 90 cN / T), preferably 30 to 80 cN / T (for example, 35 to 70 cN / T), and more preferably 40 About 60 cN / T (particularly 45 to 55 cN / T). If the Young's modulus is too low, the stiffness and elasticity of the nonwoven fabric cannot be improved.
  • the structure of the highly elastic fiber is not particularly limited as long as it has the Young's modulus.
  • it may be a polyester fiber such as polyethylene terephthalate or a polyphenylene sulfide-based fiber (single-phase fiber) of polyphenylene sulfide.
  • the core-sheath type composite fiber is preferable from the viewpoint of easily achieving both elasticity, liquid retention and liquid release properties.
  • the sheath part is preferably made of a hydrophilic resin in order to ensure wettability and liquid retention.
  • the sheath part made of hydrophilic resin plays an important role for taking liquid into the nonwoven fabric when liquid such as cosmetics (beauty liquid) is added to the liquid retaining sheet, and once taken into the nonwoven fabric. When handling a large amount of cosmetic liquid at the time of use, it plays a role to keep it from dripping.
  • hydrophilic resin examples include a resin having a hydrophilic group (particularly a hydroxyl group) such as a hydroxyl group, a carboxyl group, or a sulfonic acid group in the molecule.
  • a hydrophilic resin having a hydroxyl group in the monomer unit is preferred.
  • An ethylene-vinyl alcohol copolymer is particularly preferred from the viewpoint of having a uniform hydroxyl group.
  • the ethylene-vinyl alcohol copolymer has biocompatibility based on hydrophilicity, non-water absorption, and thermal conductivity.
  • the ethylene-vinyl alcohol copolymer has not only hydrophilicity but also moderate lipophilicity, and it contains not only a cosmetic liquid but also a mixture of oily and watery substances including sweat and dirt. Improves skin adhesion and feel.
  • the ethylene unit content (copolymerization ratio) can be selected from a range of about 25 to 70 mol%, and from the viewpoint of hydrophilicity and melt spinnability, it is about 30 to 65 mol%. For example, 35 to 60 mol%, preferably 37 to 55 mol%, more preferably 40 to 50 mol is preferable because hydrophilicity can be maintained while preventing problems on melt spinning due to deterioration of the staying resin. % May be sufficient. When the proportion of the ethylene unit is too large, the hydrophilicity is lowered, and when it is too little, the melt spinnability is lowered and the shape stability in the wet state is lowered.
  • the saponification degree of the vinyl alcohol unit may be 80 mol% or more, and 90 mol% or more (for example, 90 to 99.99 mol%), preferably 95 mol% or more from the viewpoint of hydrophilicity and melt spinnability. (For example, 95 to 99.98 mol%), more preferably about 96 to 99.97 mol%. If the degree of saponification is too small, the hydrophilicity and heat resistance will decrease.
  • the ethylene-vinyl alcohol copolymer is usually subjected to a crosslinking treatment such as acetalization after fiberization to improve hot water resistance. Therefore, it is preferable not to perform the crosslinking treatment.
  • the ethylene-vinyl alcohol copolymer may contain other copolymer units.
  • the polymerization component for constituting the copolymer unit other fatty acid vinyl esters (vinyl propionate, vinyl pivalate, etc.), vinyl silane compounds (vinyl trimethoxysilane, vinyl triethoxysilane, vinyl tri ( ⁇ -methoxy-ethoxy) Silane, ⁇ -methacryloxypropylmethoxysilane, etc.).
  • vinylsilane compounds such as vinyltrimethoxysilane and vinyltriethoxysilane are preferred.
  • the ratio of the vinylsilane compound is, for example, about 0.0001 to 0.3 mol% (particularly 0.0002 to 0.2 mol%) with respect to the entire polymerization component.
  • the viscosity average polymerization degree of the ethylene-vinyl alcohol copolymer is, for example, about 200 to 2500, preferably about 300 to 2000, and more preferably about 400 to 1500.
  • the sheath When the sheath is formed of an ethylene-vinyl alcohol copolymer, it has excellent adhesion to the skin and touch, and can improve the liquid absorbency and retention of cosmetics.
  • the core In order to maintain the desired bulkiness (porosity) in the processing step and to secure water absorption, the core is preferably formed of a hydrophobic resin whose rigidity is not reduced by water absorption.
  • hydrophobic resins examples include resin components such as polyolefin resins, acrylic resins, polyvinyl acetal resins, polyvinyl chloride resins, polyvinylidene chloride resins, polyester resins, polyamide resins, and polyurethane resins. And the like. These hydrophobic resins can be used alone or in combination of two or more.
  • hydrophobic resins resins having an official moisture content of less than 2.0% in a standard state (20 ° C., 65% RH), for example, polyolefin resins such as polyethylene and polypropylene generally used for nonwoven fabrics, Polyester resins such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polyamide resins such as polyamide 6, polyamide 6,6, and polyamide 4, 6, polyurethane resins such as polyester polyol type urethane resin, polyacrylonitrile resin
  • fibers formed from the above materials are widely used, have higher elastic modulus than ethylene-vinyl alcohol copolymers, and have excellent spinnability with ethylene-vinyl alcohol copolymers.
  • polyester resins are particularly preferable.
  • polyester resin examples include polyalkylene arylate resins such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, and aliphatic polyester resins such as polylactic acid. These polyester resins can be used alone or in combination of two or more. Of these polyester resins, poly C 2-4 alkylene arylate resins containing 80 mol% or more of C 2-4 alkylene arylate units such as ethylene terephthalate and butylene terephthalate are preferable.
  • the sheath part continuously occupies an area of 50% or more (especially 90 to 100%) of the fiber surface area in the length direction, and generally the sheath part occupies substantially the entire surface area. .
  • a core part cannot hold
  • the stiffness of the fiber is lowered, the density of the nonwoven fabric is increased, and the liquid retaining property is lowered.
  • the ratio of the sheath portion is too small, the hydrophilicity is lowered.
  • the stiffness becomes too strong, and the flexibility and conformity to the skin are deteriorated.
  • High-elasticity fibers are commonly used additives such as stabilizers (heat stabilizers such as copper compounds, UV absorbers, light stabilizers, antioxidants), colorants, dispersants, fine particles, antistatic agents, difficult
  • stabilizers heat stabilizers such as copper compounds, UV absorbers, light stabilizers, antioxidants
  • colorants dispersants, fine particles, antistatic agents, difficult
  • a flame retardant, a plasticizer, a lubricant, a crystallization rate retarder, and the like may be contained.
  • these additives can be used alone or in combination of two or more.
  • the ethylene-vinyl alcohol copolymer in the sheath part contains trace amounts of acids (fatty acids such as acetic acid) and metal salts (alkali metals such as phosphoric acid and acetic acid) in order to suppress thermal deterioration during melt molding.
  • an alkaline earth metal salt or the like may be added.
  • These additives may be carried on the surface of the fiber or may be contained in the fiber.
  • the cross-sectional shape (cross-sectional shape perpendicular to the length direction) of the highly elastic fiber is not particularly limited.
  • a round cross-section an irregular cross-section (flat shape, elliptical cross-section, etc.), a polygonal cross-section, a multi-lobed cross-section
  • Various cross-sectional shapes such as a (3-14 leaf-shaped cross section), a hollow cross section, a V-shaped cross section, a T-shaped cross section, an H-shaped cross section, a Y-shaped cross section, an I-shaped (dogbone-shaped) cross section, and an array-shaped cross section may be used.
  • the shape that does not have an acute angle part (protrusion part) or a groove part in particular, a round shape from the point that it is superior to the shape having an acute angle part (protrusion part) or a groove part such as a polygonal cross section or a Y-shaped cross section.
  • a mold section (substantially circular section such as a perfect circular section) and an elliptical section are preferable, and a substantially circular section is particularly preferable.
  • the average fineness of the highly elastic fiber is, for example, about 1.5 to 10 dtex, preferably 1.7 to 5 dtex, and more preferably 1.8 to 4.5 dtex (particularly 1.9 to 4 dtex). Furthermore, the average fineness is, for example, about 1.5 to 5 dtex, preferably 1.6 to 3 dtex, and more preferably about 1.7 to 2 dtex because the water retention rate is high and the properties such as the return of liquid components are excellent. There may be. If the highly elastic fiber is too thick, the touch is liable to decrease, and the liquid absorption and liquid retention properties tend to decrease.
  • the fiber length (average fiber length) of the highly elastic fiber is not particularly limited, but is, for example, about 20 to 70 mm, preferably 30 to 60 mm, and more preferably 45 to 60 mm (particularly 45 to 55 mm).
  • the fiber length is too long, uniform entanglement between the fibers becomes difficult, the touch is lowered, and the liquid absorbability and the liquid release property are lowered.
  • the fiber length is too short, the fibers are easily removed from the nonwoven fabric, and the flexibility and stretchability are also lowered.
  • the method for producing the highly elastic fiber is not particularly limited, and a conventional method can be used.
  • High elastic fibers can be produced, for example, by a spinning method through melt-kneading extrusion, but in order to impart a high elastic modulus to the fibers, it is preferable to perform a drawing treatment after spinning.
  • a resin component for example, a polyester-based resin that forms a core portion
  • the rigidity and stiffness can be improved, and the elasticity required for the face mask can be imparted to the nonwoven fabric.
  • the stretching method a conventional method can be used.
  • the fiber discharged from the nozzle at the time of spinning is pulled by a godet roller, it may be a one-step method of stretching between hot godet rolls.
  • a two-step method may be used in which hot drawing is performed at low speed in a hot stove.
  • the draw ratio may be 2.0 times or more, and can be specifically selected from the range of about 2 to 10 times, for example, 2.1 to 8 times, preferably 2.2 to 5 times, more preferably It is about 2.3 to 4 times (especially 2.4 to 3 times). If the draw ratio is too low, the elasticity of the highly elastic fiber cannot be sufficiently improved, and if it is too high, thread breakage occurs.
  • the heating temperature in stretching can be selected according to the type of fiber, but may be, for example, about 80 ° C. or higher, preferably 80 to 150 ° C., more preferably about 85 to 120 ° C. (especially 85 to 100 ° C.).
  • the highly elastic fiber may be subjected to a mechanical crimping treatment using a conventional method, for example, a crimping device, or may be heated and dried after the treatment.
  • the drying temperature is, for example, about 100 to 150 ° C., preferably about 120 to 150 ° C., more preferably about 140 to 150 ° C. (especially 145 to 150 ° C.). By drying at such a high temperature, the elasticity of the highly elastic fiber can be further improved.
  • the proportion of the highly elastic fiber may be 50% by mass or more with respect to the whole nonwoven fabric, for example, 50 to 100% by mass, preferably 60 to 100% by mass, more preferably 65 to 100% by mass (particularly 70 to 100%). Mass%). From the point that it is excellent in liquid retention, the thickness is restored to compression and the liquid returns quickly, and the balance between liquid retention and liquid return is excellent. It may be about 50 to 90% by mass, preferably about 55 to 85% by mass, more preferably about 60 to 80% by mass (particularly 65 to 75% by mass). If the proportion of highly elastic fibers is too small, the elasticity of the nonwoven fabric cannot be improved.
  • the non-woven fabric may further contain other fibers (low-elasticity fibers) in addition to the high-elasticity fibers as long as the rigidity and stiffness are not impaired.
  • a cellulose fiber is preferable from the point which can improve a liquid absorptivity and liquid retention.
  • Cellulosic fibers may be natural fibers (wood pulp, cotton or cotton, hemp, etc.), but recycled fibers are preferred from the viewpoint of handleability.
  • Recycled fibers include regenerated cellulose fibers (viscose rayon, polynosic, etc.) obtained by the viscose method, regenerated cellulose fibers (cupra, etc.) obtained by the copper ammonia method, and solvent spinning (cellulose is once chemically treated).
  • Solvent-spun cellulosic fibers (such as lyocell such as Tencel (registered trademark)) obtained by a direct method that does not convert to). These cellulosic fibers can be used alone or in combination of two or more.
  • solvent-spun cellulosic fibers are preferred because they are soft to the touch and excellent in fiber strength in a wet state.
  • the solvent-spun cellulose fiber is a cellulose fiber produced by a method in which a spinning stock solution in which cellulose is dissolved in amine oxide is dried and wet-spun into water to precipitate the cellulose, and the fiber is further drawn. Also good.
  • a typical example of such solvent-spun cellulosic fibers is lyocell, which is sold by the Austrian Lenzing company under the trade name “Tencel” (registered trademark).
  • Solvent-spun cellulosic fibers are usually fibrillated by beaters, refiners, high-speed disintegrators, etc., but in the present invention, fiber fibrillation prevents fine fibers from adhering to the skin. Therefore, a solvent-spun cellulose fiber that is not substantially fibrillated is preferred.
  • Fibers may also contain conventional additives as in the case of highly elastic fibers.
  • the Young's modulus of other fibers is less than 30 cN / T, for example, about 1 to 29 cN / T, preferably 5 to 25 cN / T, more preferably 10 to 23 cN / T (particularly 15 to 20 cN / T). .
  • the cross-sectional shape of other fibers may also be the shape exemplified in the section of highly elastic fibers, but from the viewpoint of excellent touch, a round cross-section or an elliptic cross-section is preferable like solvent-spun cellulose fibers. .
  • the average fineness of other fibers is, for example, 0.3 to 5 dtex, preferably 0.5 to 2 dtex, more preferably 0.6 to 1.7 dtex (particularly 0.8 to 1.5 dtex). Degree. If the other fibers are too thick, the touch is liable to decrease, and the liquid absorbency and liquid retention are likely to decrease. On the other hand, if it is too thin, the density of the nonwoven fabric is increased and the interfiber gap is reduced, so that the liquid retention is lowered.
  • the fiber length (average fiber length) of other fibers is not particularly limited, but is, for example, about 20 to 70 mm, preferably about 30 to 60 mm, and more preferably about 35 to 50 mm.
  • the fiber length is too long, uniform entanglement between the fibers becomes difficult, the touch is lowered, and the liquid absorbability and the liquid release property are lowered.
  • the fiber length is too short, the fibers are easily removed from the nonwoven fabric, and the flexibility and stretchability are also lowered.
  • the ratio (mass ratio) of highly elastic fibers and other fibers is particularly high in balance between liquid retention and liquid return properties, and therefore high elasticity fibers / other fibers (especially solvent spinning).
  • Cellulosic fiber) 60/40 to 80/20, preferably about 65/35 to 75/25. If the proportion of the high elastic fiber is too small, the elasticity of the nonwoven fabric is lowered, and if it is too much, the effect of blending other fibers is lowered. For example, if the proportion of the cellulosic fiber is small, the liquid retaining property and the liquid absorbing property are reduced. Cannot be improved.
  • the total proportion of the highly elastic fiber and the cellulosic fiber may be 50% by mass or more, for example, 80 to 100% by mass, preferably 90 to 100% by mass, and more preferably based on the whole nonwoven fabric. Is about 95 to 100% by mass, and the non-woven fabric may be formed of only high elastic fibers and cellulosic fibers.
  • the liquid-retaining sheet of the present invention has a low content of conventional binder fibers that reduce touch, unlike industrial water-absorbing sheets that require dimensional stability, etc., when used for applications that come into contact with the skin.
  • the ratio of the binder fiber may be 10% by mass or less, preferably 5% by mass or less, and more preferably 1% by mass or less with respect to the entire nonwoven fabric.
  • the nonwoven fabric (liquid holding sheet) can be produced by, for example, a spunlace method, a needle punch method, a steam jet method, or the like. Of these methods, the spunlace method is preferable from the viewpoint of simplicity.
  • staple fibers for example, high elastic fibers (or mixed cotton of high elastic fibers and other fibers) may be opened by carding with a card machine to form a nonwoven web.
  • This non-woven web includes a parallel web arranged in the traveling direction of the card machine according to a blending ratio of fibers constituting the web, a cross web in which parallel webs are cross-laid, a random web arranged randomly, or a parallel web and a random web.
  • any of the semi-random webs arranged in the middle of the above may be used, but the entanglement of fibers occurs in the transverse direction, and the elongation in the transverse direction is hindered, so the alongness to the skin tends to decrease during use
  • Parallel webs and semi-random webs that can ensure the softness and extensibility of the laminated sheet in the transverse direction are preferred to random webs and cross webs.
  • the obtained nonwoven web is subjected to a hydroentanglement process.
  • injection holes having a diameter of 0.05 to 0.3 mm (especially 0.08 to 0.2 mm) and an interval of 0.3 to 1.5 mm (particularly 0.4 to 1 mm) are provided.
  • the three-dimensional entanglement of the fibers constituting the nonwoven web is made by colliding the water flow jetted in columns from the nozzle plates arranged in three rows (especially 1-2 rows) with the nonwoven fabric web placed on the porous support member. Integrate with caulking.
  • the nonwoven web When the nonwoven web is subjected to three-dimensional entanglement, the nonwoven web is placed on a moving porous support member, and the water pressure is, for example, 1 to 15 MPa, preferably 2 to 12 MPa, more preferably 3 to 10 MPa.
  • the method of processing once or several times is preferable.
  • the injection holes are arranged in a row in a direction perpendicular to the traveling direction of the nonwoven web, and the nozzle plate on which the injection holes are arranged is perpendicular to the traveling direction of the nonwoven web placed on the porous support member. It is preferable that the water flow is caused to collide uniformly with the nonwoven fabric web by causing the water flow to swing at the same interval as the spray hole interval.
  • the porous support member on which the nonwoven fabric web is placed is not particularly limited as long as the water flow can penetrate the nonwoven fabric web, such as a mesh screen such as a wire mesh or a perforated plate.
  • the distance between the spray hole and the nonwoven web can be selected according to the water pressure, and is, for example, about 1 to 10 cm. If it is outside this range, the texture of the nonwoven fabric tends to be disturbed or the three-dimensional entanglement is insufficient.
  • a drying process may be performed.
  • the drying treatment it is preferable to remove excess moisture from the nonwoven web after treatment, and a known method can be used to remove excess moisture.
  • excessive moisture may be removed to some extent using a squeezing device such as a mangle roll, and then the remaining moisture may be removed using a drying device such as a suction band type hot air circulation dryer.
  • the liquid retaining sheet of the present invention may be a sheet obtained by impregnating a nonwoven fabric with a liquid component, for example, a skin care sheet (particularly a face mask) obtained by impregnating a nonwoven fabric with a liquid component containing cosmetics (beauty liquid).
  • the liquid retention sheet of the present invention is used for absorbing liquid components for use, for example, surface materials such as napkins and diapers, diaper liners, sheets for absorbing body fluids such as wet tissues (or skin cleaning sheets), and the like. Can also be used, but because it has a good balance between liquid retention and release properties and can be easily adhered to the skin, it can be used to adhere a sheet impregnated with a liquid component such as a cosmetic component or a medicinal component to the skin, for example, Used for various skin care sheets such as face masks, makeup removing sheets or cleansing sheets, body washing sheets (sweat wiping sheets, oil removing sheets, etc.), cooling sheets, medicinal or therapeutic sheets (itch prevention sheets, compresses, etc.) It is particularly preferable to use it for a face mask because the liquid component quickly returns even when pressed with a finger.
  • the liquid retaining sheet of the present invention may be a sheet used by impregnating these liquid components at the time of use, or a sheet (so-called wet sheet) used by impregnating the liquid components in advance.
  • liquid components include liquid substances such as solvents and liquid oils, and solutions or dispersions in which the liquid substances contain active ingredients such as cosmetic ingredients or medicinal (efficacy) ingredients (such as cosmetics and emulsions). )
  • the solvent may be a lipophilic solvent, but is preferably a hydrophilic solvent from the viewpoint of safety to the human body.
  • the hydrophilic solvent include water, lower aliphatic alcohols (eg, C 1-4 alkyl alcohols such as ethanol and isopropanol), alkylene glycols (eg, ethylene glycol, diethylene glycol, propylene glycol, etc.) and the like. .
  • These hydrophilic solvents can be used alone or in combination of two or more.
  • liquid oil examples include unsaturated higher fatty acids (for example, oleic acid, oleyl alcohol, etc.), animal and vegetable oils (for example, jojoba oil, olive oil, palm oil, camellia oil, macadamian nut oil, avocado oil, corn Oil, sesame oil, wheat germ oil, linseed oil, castor oil, squalane, etc.), mineral oil (eg, liquid paraffin, polybutene, silicone oil, etc.), synthetic oil (eg, synthetic ester oil, synthetic polyether oil, etc.), etc. Is mentioned. These liquid oils can be used alone or in combination of two or more.
  • unsaturated higher fatty acids for example, oleic acid, oleyl alcohol, etc.
  • animal and vegetable oils for example, jojoba oil, olive oil, palm oil, camellia oil, macadamian nut oil, avocado oil, corn Oil, sesame oil, wheat germ oil, linseed oil, castor oil, squalane, etc.
  • liquid oil may be used in combination as an additive (oil) for a hydrophilic solvent such as water or ethanol.
  • a hydrophilic solvent such as water or ethanol.
  • water, lower alcohols or mixtures thereof are usually used, preferably water and / or ethanol (especially water).
  • additives such as physiologically active ingredients (emulsifiers, whitening agents, antiperspirants, rough skin prevention agents, anti-inflammatory agents, skin itching inhibitors, blood circulation promoters, cell activators, etc.) Moisturizers, emollients, cleansing agents, UV absorbers, surfactants, astringents, enzymes, cooling agents, bactericides or antibacterial agents, antioxidants, amino acids, cooling agents, fragrances, coloring agents, etc. .
  • physiologically active ingredients emulsifiers, whitening agents, antiperspirants, rough skin prevention agents, anti-inflammatory agents, skin itching inhibitors, blood circulation promoters, cell activators, etc.
  • Moisturizers emollients
  • cleansing agents emulsifiers, whitening agents, antiperspirants, rough skin prevention agents, anti-inflammatory agents, skin itching inhibitors, blood circulation promoters, cell activators, etc.
  • UV absorbers emollients
  • surfactants e.g., astringent
  • a humectant or an emollient may be blended in a hydrophilic solvent.
  • the humectant or emollient include dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, polyoxyethylene-polyoxypropylene block copolymer, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sucrose fatty acid ester Glycerin, sodium hyaluronate, polyoxymethylglycoside, polyvinyl alcohol, polyvinylpyrrolidone, water-soluble cellulose ether (methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxyethylmethylcellulose, hydroxypropylmethylcellulose, etc.).
  • the total ratio of the humectant and the emollient is, for example, about 0.1 to 50% by mass, preferably 1 to 30% by mass, and more preferably about 5 to 20% by mass in the solution.
  • the ratio of these additives can be appropriately selected depending on the application.
  • the ratio of liquid substances such as water and ethanol is usually 30 to 99% by mass, preferably 40 to 95% in the total liquid components including the additives. It is about mass%, more preferably about 50 to 90 mass%.
  • the liquid-retaining sheet of the present invention is particularly suitable as a sheet to be fixed to the skin such as a face mask or a poultice because it has excellent adhesion to the skin.
  • the sheet can be in close contact with minute gaps (irregularities) such as the base of the nose, and the active ingredient of the face mask can be effectively penetrated into the skin.
  • the liquid-retaining sheet of the present invention is also suitable for cleansing sheets and skin cleaning sheets. That is, the liquid-retaining sheet of the present invention can adhere the sheet to minute gaps on the face, and therefore can effectively remove makeup (makeup cosmetics such as foundation, white powder, lipstick, and eye makeup).
  • liquid-retaining sheet of the present invention when used as a liquid-impregnated biological coating sheet (such as a face mask), the liquid-retaining sheet is usually impregnated into the liquid-retaining sheet and applied or contacted to the skin of a living body. used.
  • the liquid-retaining sheet of the present invention may be laminated with other layers.
  • a non-porous film or sheet may be laminated on the side that does not come into contact with the skin in order to promote absorption of active ingredients.
  • MI melt index (g / 10 min)
  • a certain amount of synthetic resin (2160g) is heated and pressurized at a specified temperature (190 ° C) in a cylindrical container heated by a heater, and extruded from the opening (nozzle) provided at the bottom of the container every 10 minutes. The amount of resin formed was measured.
  • Fineness (dtex) weight (g) / (number of 30 ⁇ fiber length 30 mm) ⁇ 10000 m.
  • Water retention rate (%) It measured according to JIS L1907 7.2 water absorption. A test piece is cut into a 5 cm square and the weight is measured (Ag). The test piece was immersed in water for 30 seconds. After immersion, one side of the test piece was picked up from the liquid and the weight (Bg) after 1 minute was measured. The liquid retention rate (C%) is calculated by the following formula.
  • Liquid return to original fabric (%) [(AB) / A] ⁇ 100.
  • a composite ratio (core Part / sheath part) 50/50 (weight ratio)
  • the spun yarn was cooled and solidified, and then wound on a bobbin through a take-up roller at a speed of 1000 m / min to obtain a 5.3 dtex take-up yarn.
  • this crimped yarn was heat-drawn at a drawing temperature of 90 ° C.
  • a mechanical crimping treatment was performed.
  • the mechanical crimping treatment was performed using a normal stuffer type crimping device.
  • the fiber is dried with hot air at 150 ° C., and then cut to 51 mm to obtain a single fiber fineness of 1.9 dtex, a number of crimps of 23/25 mm, a short fiber having a Young's modulus of 51.0 cN / T ( A core-sheath composite fiber A) was obtained. Both spinnability and stretchability were good.
  • Core-sheath composite fiber C Core-sheath composite fiber A except that the draw ratio is 2.5 times and the drying temperature with hot air is 140 ° C.
  • a core-sheath composite fiber C having a single yarn fineness of 1.9 dtex, a fiber length of 51 mm, a crimp number of 23/25 mm, and a Young's modulus of 30.8 cN / T was obtained.
  • Tencel fiber “TENCEL” manufactured by LENZING, fineness of 1.7 dtex, average fiber length of 38 mm, Young's modulus of 19.2 cN / T Rayon fiber: “Hope” manufactured by Omikenshi Co., Ltd., fineness of 1.7 dtex, average fiber length of 38 mm, Young's modulus of 13.3 cN / T Polyphenylene sulfide (PPS) fiber: “Procon” manufactured by Toyobo Co., Ltd., 2.2 dtex, Young's modulus 441.0 cN / T PET fiber: manufactured by Toray Industries, Inc., fineness 1.7 dtex, average fiber length 51 mm, Young's modulus 29.8 cN / T Cotton fiber: manufactured by Marusan Sangyo Co., Ltd., fineness 1.6 dtex, Young's modulus 12.8 cN / T.
  • PPS polyphenylene sulfide
  • Examples 1 to 7 and Comparative Examples 1 to 4 The fibers shown in Table 1 were blended (without blending when a single fiber was used) to produce a card web. Next, a water flow was sprayed on the card web, and an entanglement treatment was performed to obtain a water entangled nonwoven fabric. In the water entanglement treatment, a nozzle having orifices with a diameter of 0.1 mm provided at intervals of 0.6 mm in the width direction of the web was used, and water pressure of 3 to 5 MPa was jetted in two steps, front and back, and entangled.
  • Table 1 shows the evaluation results of the nonwoven fabrics obtained in Examples and Comparative Examples.
  • the nonwoven fabric of the example has a high water retention rate, and both the compression elasticity (compression elasticity at the time of impregnation) and the return in the thickness direction when impregnating the cosmetic liquid are fast, and the nonwoven fabric of the comparative example is fast.
  • the compression elasticity during impregnation and the return are slow.
  • the liquid return to the original fabric is constant at a low liquid return of about 50% regardless of the ratio of the compression elasticity at the time of impregnation, whereas in the example, it is proportional to the compression elasticity at the time of impregnation.
  • the liquid return to the original fabric is improved, and in particular, the nonwoven fabric containing 70% by mass or more of the core-sheath conjugate fiber A having a high Young's modulus shows a high liquid return to the original fabric exceeding 80%.
  • Reference Examples 1-12 In order to further clarify the relationship between the compression elasticity during impregnation and the liquid return in Comparative Examples 1 to 4, the fibers shown in Table 2 were blended (without blending when a single fiber was used), and various impregnations were performed. Nonwoven fabrics having time compression elasticity were prepared in the same manner as in Examples 1 to 5 and Comparative Examples 1 to 4. Comparative Examples 1 to 4 are Reference Examples 6, 1, 2, and 10, respectively.
  • the liquid return to the original fabric does not occur even though the compression elasticity at the time of impregnation is in a wide range from 3.6% to 56.7%. It is constant at a low level of about 40-50%. This tendency indicates that it is difficult to control the liquid return speed when the compression elasticity during impregnation is within a predetermined range.
  • the compression elasticity during impregnation exceeds 60%, the compression elasticity during impregnation is improved and the liquid return to the original fabric is improved, and the compression elasticity during impregnation is improved. When it exceeds 75%, the liquid return to the original fabric also reaches 80% or more.
  • the nonwoven fabric is formed with a high elastic fiber at a predetermined ratio, and the compression elasticity at the time of impregnation can be adjusted to a predetermined level or higher, so that the original fabric is not restored.
  • the effect of such an example is a remarkable effect that cannot be predicted from a nonwoven fabric containing conventional low-elasticity fibers.
  • the liquid retaining sheet of the present invention absorbs a liquid component and makes contact with the skin, for example, a body fluid absorbing sheet (for example, a surface material such as a napkin or a diaper, a diaper liner, a wet tissue), a skin care sheet (for example, It can be used for face masks, makeup removing sheets, cleansing sheets or body washing sheets (sweat wiping sheets, oil removing sheets, cooling sheets, etc.), medicinal sheets (stagnation suppression sheets, poultices, etc.), etc.
  • the sheet is impregnated with liquid ingredients such as cosmetic liquids (cosmetics), and even when pressed with a finger, the liquid ingredients quickly return, so the entire face, nose, eyes, mouth, neck, etc. are moisturized and whitened.
  • a body fluid absorbing sheet for example, a surface material such as a napkin or a diaper, a diaper liner, a wet tissue
  • a skin care sheet for example, It can be used for face masks, makeup removing

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Abstract

La présente invention concerne une feuille de rétention d'eau qui est formée d'un tissu non tissé contenant, à un taux supérieur ou égal à 50 % en masse, une fibre très élastique présentant un module de Young supérieur ou égal à 30 cN/T. La fibre très élastique peut être une fibre conjuguée cœur-écorce. La partie écorce de la fibre conjuguée cœur-écorce peut être formée d'un copolymère d'éthylène/alcool vinylique et la partie cœur associée peut être formée d'une résine hydrophobe. La finesse moyenne de la fibre très élastique peut valoir environ 1,5 dtex à 10 dtex. Lorsque cette feuille de rétention d'eau est appuyée avec un doigt pour être imprégnée avec un élément liquide tel qu'une lotion de beauté, l'élément liquide peut rapidement réapparaître. Ainsi, la feuille de rétention d'eau peut être utilisée de façon appropriée comme masque facial.
PCT/JP2014/075376 2013-09-27 2014-09-25 Feuille de rétention de liquide et masque facial WO2015046301A1 (fr)

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JP2015539299A JP6494518B2 (ja) 2013-09-27 2014-09-25 保液シート及びフェイスマスク
CN201480059103.3A CN105814249B (zh) 2013-09-27 2014-09-25 保液片及面膜
KR1020167010181A KR102213970B1 (ko) 2013-09-27 2014-09-25 보액 시트 및 페이스 마스크
HK16111290.6A HK1223133A1 (zh) 2013-09-27 2016-09-27 保液片及面膜

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JP2017109053A (ja) * 2015-12-18 2017-06-22 倉敷繊維加工株式会社 美容フェイスマスク用不織布
JP2017141184A (ja) * 2016-02-09 2017-08-17 三粧化研株式会社 ピーリングパック剤
WO2018158416A1 (fr) 2017-03-03 2018-09-07 Kelheim Fibres Gmbh Utilisation d'une fibre de viscose
JP2021006191A (ja) * 2019-06-28 2021-01-21 小林製薬株式会社 美容用具
WO2021192985A1 (fr) * 2020-03-24 2021-09-30 クラレクラフレックス株式会社 Tissu non tissé, procédé de production de celui-ci, feuille imprégnée de liquide et feuille d'essuyage

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KR102535595B1 (ko) * 2017-11-13 2023-05-23 닛폰 에쿠스란 고교 가부시키가이샤 보액성 부직포 및 이 부직포를 함유하는 페이스 마스크
TWI793244B (zh) * 2018-01-24 2023-02-21 日商日本Ｅｘｌａｎ工業股份有限公司 吸水性纖維前驅物、吸水性不織布前驅物及吸水性不織布、以及含有它之面膜及化妝水已填充完成之面膜、以及彼等之製造方法
KR102161425B1 (ko) * 2019-01-22 2020-10-05 김대원 극세레이온섬유와 탄성메쉬원단을 이용한 마스크팩시트의 제조장치
CN111235935B (zh) * 2020-01-23 2022-04-12 诺斯贝尔化妆品股份有限公司 一种制备高湿强度无尘纸的工艺及所得产品
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CN105814249A (zh) 2016-07-27
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