WO2022230609A1 - Humectant cloth and undergarment including same - Google Patents

Humectant cloth and undergarment including same Download PDF

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Publication number
WO2022230609A1
WO2022230609A1 PCT/JP2022/016698 JP2022016698W WO2022230609A1 WO 2022230609 A1 WO2022230609 A1 WO 2022230609A1 JP 2022016698 W JP2022016698 W JP 2022016698W WO 2022230609 A1 WO2022230609 A1 WO 2022230609A1
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WIPO (PCT)
Prior art keywords
fabric
less
moisturizing
fibers
moisture
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Application number
PCT/JP2022/016698
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French (fr)
Japanese (ja)
Inventor
多田早織
木村達人
松本良友
Original Assignee
株式会社カネカ
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Application filed by 株式会社カネカ filed Critical 株式会社カネカ
Priority to CN202280008654.1A priority Critical patent/CN116710607A/en
Priority to JP2023517220A priority patent/JPWO2022230609A1/ja
Publication of WO2022230609A1 publication Critical patent/WO2022230609A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B9/00—Undergarments
    • A41B9/06—Undershirts; Chemises
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/12—Hygroscopic; Water retaining
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/233—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads protein-based, e.g. wool or silk
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials

Definitions

  • the present invention relates to a moisturizing fabric that is excellent in moisturizing properties and flexibility and does not get stuffy, and an underwear containing the same.
  • underwear materials such as those disclosed in Cited Document 1 are likely to be inferior in durability because they are attached with a moisturizing agent.
  • underwear materials are required to be resistant to stuffiness and to have flexibility in order to provide a comfortable wearing feeling.
  • the present invention provides a moisturizing fabric that has good moisturizing properties and flexibility and does not get stuffy easily, and underwear using the same.
  • the present invention relates to a moisture-retaining fabric, wherein the moisture-retaining fabric contains regenerated collagen fibers, and the 2-hour skin moisture increase rate due to the moisture-retaining fabric is 0.8% or more and 1.8% or less, and 2.
  • the present invention relates to a moisturizing fabric characterized by having a moisture absorption amount per hour of 0.70 mg/cm 2 or more.
  • the present invention also relates to underwear characterized by containing a moisture-retaining fabric.
  • the inventor of the present invention diligently studied how to improve the moisture retention, flexibility, and resistance to stuffiness of materials that come into contact with the skin surface.
  • excellent moisturizing properties can be obtained without attaching a moisturizer to the fabric.
  • the present inventors have found that the softness is good and the stuffiness of the skin is suppressed, leading to the present invention.
  • the cause is not clear and is not beyond the scope of speculation, but it is speculated that the fabric containing regenerated collagen fibers absorbs and retains moisture appropriately, preventing the surface of the skin from drying out and preventing the skin from becoming stuffy. be.
  • regenerated collagen fibers means regenerated collagen fibers in a crosslinked state (also referred to as insoluble).
  • the 2-hour skin moisture increase rate of the moisturizing fabric is 0.8% or more and 1.8% or less. If the 2-hour skin moisture increase rate exceeds 1.8%, the skin becomes stuffy. If the 2-hour skin moisture increase rate is less than 0.8%, the skin becomes dry. From the viewpoint of moisturizing properties, the 2-hour skin moisture increase rate of the moisturizing fabric is preferably 0.9% or more, more preferably 1.0% or more, and further preferably 1.1% or more. It is preferably 1.2% or more, and particularly preferably 1.2% or more. From the viewpoint of resistance to stuffiness, the 2-hour skin moisture increase rate of the moisturizing fabric is preferably 1.7% or less, more preferably 1.6% or less, and 1.5% or less. More preferably, it is particularly preferably 1.4% or less.
  • the 2-hour skin moisture increase rate of the moisturizing fabric is preferably 0.9% or more and 1.7% or less, more preferably 1.0% or more and 1.6% or less. .1% or more and 1.5% or less is more preferable, and 1.1% or more and 1.4% or less is particularly preferable.
  • the 2-hour moisture absorption amount of the moisturizing fabric is 0.70 mg/cm 2 or more. This can prevent drying of the skin surface.
  • the 2-hour moisture absorption amount of the moisturizing fabric is preferably 0.75 mg/cm 2 or more, more preferably 0.80 mg/cm 2 or more, and even more preferably 0.85 mg/cm 2 or more.
  • the moisture absorption amount for 2 hours by the moisturizing fabric is preferably 1.8 mg/cm 2 or less, more preferably 1.5 mg/cm 2 or less, and 1.10 mg/cm 2 or less. is more preferable.
  • the 2-hour moisture absorption amount of the moisturizing fabric is preferably 0.70 mg/cm 2 or more and 1.8 mg/cm 2 or less, and 0.75 mg/cm 2 or more and 1.5 mg/cm 2 or less. more preferably 0.80 mg/cm 2 or more and 1.3 mg/cm 2 or less, and particularly preferably 0.85 mg/cm 2 or more and 1.10 mg/cm 2 or less.
  • the 2-hour skin moisture increase rate and 2-hour moisture absorption by the moisturizing fabric are measured as follows.
  • the moisturizing fabric has excellent washing durability, and for example, the skin moisture increase rate for 2 hours after washing 50 times is preferably 0.8% or more and 1.8% or less, and 0.9% or more and 1.7%. is more preferably 1.0% or more and 1.6% or less, even more preferably 1.1% or more and 1.5% or less, and 1.1% or more and 1.5% or less. 4% or less is particularly preferable.
  • the moisture-retaining fabric has excellent washing durability.
  • the moisture absorption for 2 hours after washing 50 times is preferably 0.70 mg/cm 2 or more and 1.8 mg/cm 2 or less, and preferably 0.75 mg/cm 2 or more. It is more preferably 1.5 mg/cm 2 or less, further preferably 0.80 mg/cm 2 or more and 1.3 mg/cm 2 or less, and 0.85 mg/cm 2 or more and 1.10 mg/cm 2 or less. It is particularly preferred to have
  • the moisture-retaining fabric has excellent flexural properties.
  • the flexural rigidity B is preferably 0.19 gf ⁇ cm 2 /cm or less, and preferably 0.18 gf ⁇ cm 2 /cm or less. It is more preferably 0.16 gf ⁇ cm 2 /cm or less.
  • the moisture-retaining fabric preferably has a flexural rigidity B of 0.015 gf ⁇ cm 2 /cm or more, more preferably 0.020 gf ⁇ cm 2 /cm or more, from the viewpoint of excellent elasticity and sewability. is more preferable, and 0.030 gf ⁇ cm 2 /cm or more is even more preferable.
  • the flexural rigidity B is preferably 0.015 gf ⁇ cm 2 /cm or more and 0.19 gf ⁇ cm 2 /cm or less, and more preferably 0.020 gf ⁇ cm 2 /cm or more and 0.18 gf ⁇ cm 2 /cm or more. cm or less, and more preferably 0.030 gf ⁇ cm 2 /cm or more and 0.16 gf ⁇ cm 2 /cm or less.
  • the moisturizing fabric has excellent bending properties, and for example, from the viewpoint of having a soft texture, the bending hysteresis 2HB is preferably 0.45 gf cm / cm or less, and is 0.42 gf cm / cm or less. is more preferably 0.40 gf ⁇ cm/cm or less, and particularly preferably 0.38 gf ⁇ cm/cm or less.
  • the moisture-retaining fabric preferably has a bending hysteresis 2HB of 0.015 gf cm/cm or more, more preferably 0.020 gf cm/cm or more.
  • the moisture-retaining fabric preferably has a bending hysteresis 2HB of 0.015 gf cm/cm or more and 0.45 gf cm/cm or less, and 0.020 gf cm/cm or more and 0.42 gf cm/cm or more. / cm or less, more preferably 0.040 gf cm / cm or more and 0.40 gf cm / cm or less, and 0.070 gf cm / cm or more and 0.38 gf cm / cm or less It is particularly preferred to have
  • the moisturizing fabric has excellent shear properties, and for example, from the viewpoint of being soft and easy to fit on the body, the shear rigidity G is preferably 0.45 gf/cm deg or less, and 0.42 gf/cm deg or less. is more preferably 0.39 gf/cm ⁇ deg or less.
  • the moisture-retaining fabric preferably has a shear rigidity G of 0.15 gf/cm deg or more, more preferably 0.18 gf/cm deg or more, from the viewpoint of having a supple texture and sewability. It is preferably 0.20 gf/cm ⁇ eg or more, and more preferably 0.20 gf/cm ⁇ eg or more.
  • the moisture-retaining fabric preferably has a shear rigidity G of 0.15 gf/cm ⁇ deg or more and 0.45 gf/cm ⁇ deg or less, and 0.18 gf/cm ⁇ deg or more and 0.42 gf/cm ⁇ deg or more. It is more preferably 0.20 gf/cm ⁇ deg or more and 0.42 gf/cm ⁇ deg or less.
  • the shear stiffness G of the moisture-retaining fabric was determined by KES-FB1 (Kato Tech Co., Ltd.) using a sample (size 20 cm ⁇ 20 cm), shear force 2.5 gf / cm, shear strain rate 0.00834 / s, shear It can be measured under the conditions of an angle of ⁇ 8°.
  • the difference (T1-T2) between the skin surface temperature T1 after 1 hour and the skin surface temperature T2 after 2 hours is less than 0.10 ° C. is preferably 0.08° C. or lower, and even more preferably 0.06° C. or lower.
  • the moisturizing fabric contains regenerated collagen fibers.
  • the regenerated collagen fibers are not particularly limited, and known regenerated collagen fibers can be used as appropriate.
  • regenerated collagen fibers can be obtained by cross-linking (insolubilizing) the solubilized regenerated collagen fibers obtained by spinning the solubilized collagen solution obtained by dissolving and solubilizing the collagen raw material. .
  • collagen raw material skins of animals such as cows, pigs, horses, deer, and rabbits can be used. Fresh split hides and salted rawhide obtained from animals such as cattle are preferably used. Since the collagen contained in such a collagen raw material is insoluble collagen that is partially crosslinked, it is subjected to a solubilization treatment to break the crosslinks.
  • a solubilization method a known alkali solubilization method, enzyme solubilization method, or the like can be used.
  • Collagen that has become soluble in water by the solubilization treatment is, for example, an acid aqueous solution such as a hydrochloric acid aqueous solution, an acetic acid aqueous solution, or a lactic acid aqueous solution, and the collagen (solid content) concentration is 1% by weight or more and 15% by weight or less, preferably 2%.
  • a collagen spinning solution is prepared in a range of about 10% by weight to 10% by weight and a pH range of 2 to 4.5. The obtained collagen spinning solution may be subjected to defoaming under stirring under reduced pressure, if necessary, and may be filtered to remove fine dust, which is a water-insoluble matter.
  • a collagen spinning solution can be discharged, for example, through a spinning nozzle or a slit into an inorganic salt aqueous solution or an organic solvent, and solidified to form a solubilized regenerated collagen fiber.
  • Collagen fibers can be obtained by cross-linking the obtained solubilized regenerated collagen fibers with a cross-linking agent to make them insolubilized.
  • the cross-linking agent is not particularly limited, and examples thereof include organic cross-linking agents and metal compounds. Examples of organic cross-linking agents include aldehyde compounds such as formaldehyde and epoxy compounds such as epichlorohydrin. Examples of metal compounds that can be used include zirconium salts and aluminum salts. One of these organic cross-linking agents and metal compounds may be used alone, or two or more thereof may be used in combination.
  • the moisturizing fabric preferably contains 40% by weight or more of regenerated collagen fibers, more preferably 45% by weight or more, and even more preferably 50% by weight or more, from the viewpoint of moisture retention, flexibility, and resistance to stuffiness. , at least 55% by weight.
  • the moisture-retaining fabric may consist of 100% by weight of regenerated collagen fibers, but from the viewpoint of tensile properties, shear properties and bending properties, it preferably contains 80% by weight or less of regenerated collagen fibers, and 75% by weight or less. More preferably, it contains 70% by weight or less.
  • the moisture-retaining fabric contains 40% to 70% by weight of regenerated collagen fibers and 30% to 60% by weight of other fibers from the viewpoint of excellent moisture retention, flexibility, resistance to stuffiness, texture, and tensile strength. It preferably contains 45% to 65% by weight of regenerated collagen fibers, and more preferably 35% to 55% by weight of other fibers, and 45% to 60% by weight of regenerated collagen fibers, and 40% by weight or more and 55% by weight or less of other fibers.
  • natural fibers and chemical fibers that are usually used for underwear can be used.
  • natural fibers include animal hair fibers such as wool, and natural cellulose fibers such as cotton and hemp.
  • chemical fibers polyester fibers, acrylic fibers (polyacrylonitrile fibers), acrylic fibers (modacrylic fibers), nylon fibers, cellulose fibers, and the like can be appropriately used.
  • cellulosic fibers regenerated cellulose fibers such as viscose rayon and cuprammonium rayon, and solvent-spun rayon such as lyocell can be used.
  • a polyethylene terephthalate fiber or the like can be used as the polyester fiber.
  • regenerated cellulose fibers such as viscose rayon.
  • acrylic fibers and natural cellulose fibers can be preferably used.
  • Other fibers may be used singly or in combination of two or more.
  • one or more fibers selected from the group consisting of polyester fibers, acrylic fibers, and cellulosic fibers may be used.
  • the regenerated collagen fibers and other fibers are not particularly limited, but both of them preferably have a single fiber fineness of 10 dtex or less, and 8 dtex or less, from the viewpoint of, for example, good touch. is more preferable, 5 dtex or less is more preferable, and 3 dtex or less is particularly preferable.
  • the regenerated collagen fibers and other fibers preferably have a single fiber fineness of 0.5 dtex or more, more preferably 0.6 dtex or more, and more preferably 0.8 dtex. It is more preferable that it is above.
  • the regenerated collagen fibers and other fibers may be long fibers or short fibers.
  • the regenerated collagen fibers and other fibers When used as spun yarn, the regenerated collagen fibers and other fibers preferably have a fiber length of 26 mm or more and 126 mm or less, more preferably 35 mm or more and 76 mm or less.
  • the thickness of the spun yarn is not particularly limited, but may be, for example, 5/1 or more and 100/1 or less in British cotton count from the viewpoint of texture.
  • the moisturizing fabric may be a knitted fabric or a woven fabric. Knitted fabrics and woven fabrics may be single-layered or multi-layered with two or more layers.
  • the knitted fabric is not particularly limited, and may be any of circular knitting, horizontal knitting, warp knitting, and pile knitting. double-sided knitting), rubber knitting, pearl knitting, Denby weaving, cord weaving, atlas weaving, chain weaving, insertion weaving, and the like.
  • the texture of the woven fabric is also not particularly limited, and may be a Mihara weave such as plain weave, twill weave, or satin weave, or patterned woven fabric using a special loom such as dobby or jaguar. From the viewpoints of feel on the skin, fit to the body, and breathability, it is preferably a knitted fabric when used for underwear.
  • the moisturizing fabric is not particularly limited, for example, from the viewpoint of strength and wearing feeling when used as underwear, it is preferable that the basis weight is 80 g/m 2 or more and 350 g/m 2 or less, and 85 g/m 2 or more and 330 g/m 2 or more. m 2 or less, more preferably 90 g/m 2 or more and 320 g/m 2 or less, still more preferably 100 g/m 2 or more and 315 g/m 2 or less, and 110 g/m 2 or less.
  • underwear Moisture-retaining fabrics can be suitably used for underwear, and the undergarments have good moisture-retaining properties and flexibility, and are less stuffy.
  • the undergarment may be entirely composed of the moisturizing fabric of the present invention, or may be partially composed of the moisturizing fabric of the present invention.
  • the underwear is not particularly limited as long as it is worn in direct contact with the skin. Examples include shirts, home wear, lingerie, pants (including shorts, girdles, etc.), belly wraps, socks, gloves, sporting goods, and the like.
  • the moisture-retaining fabric may be used for other textile products such as bedclothes and towels that are used in contact with the skin.
  • the measurement method and evaluation method are as follows. The measurement and evaluation were performed under conditions of a temperature of 23 ⁇ 2° C. and a relative humidity of 65 ⁇ 5%.
  • Regenerated collagen fibers those produced in Production Example 1 below were used.
  • ⁇ Production Example 1> A 30% by weight aqueous solution of hydrogen peroxide diluted to 30% by weight was added to pieces of cow split skin that had been solubilized with alkali, and then dissolved in an aqueous lactic acid solution to adjust the pH to 3.5 and the solid content to 7.5% by weight.
  • a stock solution was prepared. The stock solution was subjected to stirring and defoaming treatment under reduced pressure with a stirring and defoaming machine (manufactured by Dalton Co., Ltd., Model 8DMV), transferred to a piston-type spinning stock solution tank, and left to stand still under reduced pressure for defoaming.
  • a stirring and defoaming machine manufactured by Dalton Co., Ltd., Model 8DMV
  • solubilized regenerated collagen fibers were mixed with 1.7% by weight of epichlorohydrin, 0.0246% by weight of sodium hydroxide, and 17% sodium sulfate (using neutral anhydrous mirabilite manufactured by Tosoh Corporation). % by weight in an aqueous solution at 25° C. for 4 hours, and then the temperature of the reaction solution was raised to 43° C. and immersed for 2 hours. After the reaction was completed, the reaction solution was removed, and batch washing was performed three times using water at 25°C.
  • the water-washed fibers were immersed in a bath filled with an oil comprising a Pluronic (registered trademark) type polyether antistatic agent to adhere the oil. It was dried under tension using a hot air convection dryer adjusted to 50° C. to obtain a regenerated collagen fiber (tow) having a single fiber fineness of 2 dtex.
  • the tow crimped by the gear crimper was cut to a fiber length of 51 mm by a rotary cutter to obtain regenerated collagen fibers having a single fiber fineness of 2 dtex and a fiber length of 51 mm.
  • Example 1 Using the regenerated collagen fibers obtained in Production Example 1, a spun yarn (British cotton count: 10/1) composed of 100% by weight of regenerated collagen fibers was produced by ring-spinning with a 2-inch spinning machine. A knitted fabric (basis weight: 313 g/m 2 ) was produced by tenjiku knitting.
  • Examples 2 to 15 Regenerated collagen fibers and acrylic fibers, polyester fibers, rayon fibers or cotton were mixed at the contents shown in Tables 1 and 2 below, ring-spun with a 2-inch spinning machine, and blended yarn (British cotton count: 10/1 ), and using the blended yarn, a knitted fabric having a basis weight shown in Tables 1 and 2 below was produced by tenjiku knitting.
  • the 2-hour skin moisture increase rate by the fabric is 0.8% or more and 1.8% or less, and the 2-hour moisture absorption amount is 0.70 mg/cm 2 or more. It was hard to get stuffy and was excellent in moisture retention. In addition, the shear rigidity was low and it was flexible.
  • T2 T1-T2
  • T1-T2 the difference in temperature
  • fabrics containing regenerated collagen fibers which have excellent moisture retention properties, absorb water, but evaporate water from the fabrics only to a limited extent, so that the temperature does not easily drop and the fabrics exhibit heat retention.
  • a moisturizing fabric comprising: The moisturizing fabric contains regenerated collagen fibers, A moisturizing fabric characterized by having a 2-hour skin moisture increase rate of 0.8% or more and 1.8% or less and a 2-hour moisture absorption amount of 0.70 mg/cm 2 or more.
  • the moisture-retaining fabric has a flexural rigidity B of 0.015 gf ⁇ cm 2 /cm or more and 0.19 gf ⁇ cm 2 /cm or less, and a flexural hysteresis 2HB of 0.015 gf ⁇ cm/cm or more and 0.45 gf.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Knitting Of Fabric (AREA)

Abstract

The present invention relates to humectant cloth which includes regenerated collagen fibers and which attains a 2-hour skin moisture increase of 0.8-1.8% and has a 2-hour moisture absorption of 0.70 mg/cm2 or greater. The humectant cloth preferably includes 40-70 wt% the regenerated collagen fibers. The present invention further relates to an undergarment including the humectant cloth. Thus, the invention can provide humectant cloth and an undergarment including the humectant cloth, which have satisfactory humectant properties and flexibility and are less apt to cause stuffiness.

Description

保湿性布地及びそれを含む肌着Moisturizing fabric and underwear containing it
　本発明は、保湿性および柔軟性に優れ、蒸れにくい保湿性布地及びそれを含む肌着に関する。 The present invention relates to a moisturizing fabric that is excellent in moisturizing properties and flexibility and does not get stuffy, and an underwear containing the same.
　従来から、肌着等のように皮膚表面に接する衣料用素材については、肌から水分が失われ乾燥することを防止するために、保湿性を付与することが行われている。例えば、特許文献１では、保湿剤をバインダーにより衣料に付着させることで、保湿性を付与することが行われている。 Conventionally, clothing materials such as underwear that come into contact with the skin surface have been given moisture retention in order to prevent moisture loss from the skin and dryness. For example, in Patent Literature 1, moisturizing properties are imparted by attaching a moisturizing agent to clothing using a binder.
特開平２－３００３０１号公報JP-A-2-300301
　しかしながら、引用文献１のような従来の肌着用素材では、保湿剤を付着させており、耐久性が劣る恐れがあった。
　また、肌着用素材には、快適な着用感のため、蒸れにくく、柔軟性を有することも求められている。 However, conventional underwear materials such as those disclosed in Cited Document 1 are likely to be inferior in durability because they are attached with a moisturizing agent.
In addition, underwear materials are required to be resistant to stuffiness and to have flexibility in order to provide a comfortable wearing feeling.
　本発明は、上記を鑑み、保湿性及び柔軟性が良好であり、蒸れにくい保湿性布地及びそれを用いた肌着を提供する。 In view of the above, the present invention provides a moisturizing fabric that has good moisturizing properties and flexibility and does not get stuffy easily, and underwear using the same.
　本発明は、保湿性布地であって、前記保湿性布地は、再生コラーゲン繊維を含み、前記保湿性布地による２時間肌水分増加率が０．８％以上１．８％以下であり、かつ２時間吸湿量が０．７０ｍｇ／ｃｍ2以上であることを特徴とする保湿性布地に関する。 The present invention relates to a moisture-retaining fabric, wherein the moisture-retaining fabric contains regenerated collagen fibers, and the 2-hour skin moisture increase rate due to the moisture-retaining fabric is 0.8% or more and 1.8% or less, and 2. The present invention relates to a moisturizing fabric characterized by having a moisture absorption amount per hour of 0.70 mg/cm 2 or more.
　本発明は、また、保湿性布地を含むことを特徴とする肌着に関する。 The present invention also relates to underwear characterized by containing a moisture-retaining fabric.
　本発明によれば、保湿性及び柔軟性が良好であり、蒸れにくい保湿性布地及びそれを含む肌着を提供することができる。 According to the present invention, it is possible to provide a moisture-retaining fabric that has good moisture-retaining properties and flexibility, and does not get stuffy easily, and an underwear containing the same.
　本発明の発明者は、皮膚表面に接する素材について、保湿性、柔軟性及び蒸れにくさを向上させることについて鋭意検討した。その結果、布地に再生コラーゲン繊維を含ませ、該布地による２時間肌水分増加率及び２時間吸湿量を所定量にすることで、保湿剤を布帛に付着しなくても、保湿性に優れる上、柔軟性が良好であり、肌蒸れも抑制されることを見出し、本発明に至った。その原因は明らかでなく、推測の範囲を超えないが、再生コラーゲン繊維を含む布地が、水分を適度に吸収しかつ保持することで、皮膚表面の乾燥を防ぐとともに、肌蒸れも防ぐと推測される。また、好適には、再生コラーゲン繊維を含む布地で肌を被覆した場合、保湿性に優れる再生コラーゲン繊維を含む布地が水分を吸収する一方、該布地からの水分の蒸散は限定的であるため、温度が低下せずに保温性を有する。本発明の１以上の実施形態において、「再生コラーゲン繊維」とは、架橋されている状態（不溶性とも称される）の再生コラーゲン繊維を意味する。 The inventor of the present invention diligently studied how to improve the moisture retention, flexibility, and resistance to stuffiness of materials that come into contact with the skin surface. As a result, by including regenerated collagen fibers in the fabric and setting the 2-hour skin moisture increase rate and the 2-hour moisture absorption amount by the fabric to a predetermined amount, excellent moisturizing properties can be obtained without attaching a moisturizer to the fabric. The present inventors have found that the softness is good and the stuffiness of the skin is suppressed, leading to the present invention. The cause is not clear and is not beyond the scope of speculation, but it is speculated that the fabric containing regenerated collagen fibers absorbs and retains moisture appropriately, preventing the surface of the skin from drying out and preventing the skin from becoming stuffy. be. Preferably, when the skin is covered with a fabric containing regenerated collagen fibers, the fabric containing regenerated collagen fibers, which has excellent moisture retention properties, absorbs moisture, while evaporation of water from the fabric is limited. It retains heat without lowering the temperature. In one or more embodiments of the present invention, "regenerated collagen fibers" means regenerated collagen fibers in a crosslinked state (also referred to as insoluble).
　（保湿性布地）
　保湿性布地による２時間肌水分増加率が０．８％以上１．８％以下である。２時間肌水分増加率が１．８％を超えると肌蒸れが生じる。２時間肌水分増加率が０．８％未満であると肌が乾燥する。保湿性の観点から、保湿性布地による２時間肌水分増加率が０．９％以上であることが好ましく、１．０％以上であることがより好ましく、１．１％以上であることがさらに好ましく、１．２％以上であることが特に好ましい。蒸れにくさの観点から、保湿性布地による２時間肌水分増加率が１．７％以下であることが好ましく、１．６％以下であることがより好ましく、１．５％以下であることがさらに好ましく、１．４％以下であることが特に好ましい。具体的には、保湿性布地による２時間肌水分増加率が０．９％以上１．７％以下であることが好ましく、１．０％以上１．６％以下であることがより好ましく、１．１％以上１．５％以下であることがさらに好ましく、１．１％以上１．４％以下であることが特に好ましい。 (moisturizing fabric)
The 2-hour skin moisture increase rate of the moisturizing fabric is 0.8% or more and 1.8% or less. If the 2-hour skin moisture increase rate exceeds 1.8%, the skin becomes stuffy. If the 2-hour skin moisture increase rate is less than 0.8%, the skin becomes dry. From the viewpoint of moisturizing properties, the 2-hour skin moisture increase rate of the moisturizing fabric is preferably 0.9% or more, more preferably 1.0% or more, and further preferably 1.1% or more. It is preferably 1.2% or more, and particularly preferably 1.2% or more. From the viewpoint of resistance to stuffiness, the 2-hour skin moisture increase rate of the moisturizing fabric is preferably 1.7% or less, more preferably 1.6% or less, and 1.5% or less. More preferably, it is particularly preferably 1.4% or less. Specifically, the 2-hour skin moisture increase rate of the moisturizing fabric is preferably 0.9% or more and 1.7% or less, more preferably 1.0% or more and 1.6% or less. .1% or more and 1.5% or less is more preferable, and 1.1% or more and 1.4% or less is particularly preferable.
　保湿性布地による２時間吸湿量が０．７０ｍｇ／ｃｍ2以上である。これにより、皮膚表面の乾燥を防ぐことができる。保湿性布地による２時間吸湿量は０．７５ｍｇ／ｃｍ2以上であることが好ましく、０．８０ｍｇ／ｃｍ2以上であることがより好ましく、０．８５ｍｇ／ｃｍ2以上であることがさらに好ましい。また、肌触りの観点から、保湿性布地による２時間吸湿量は１．８ｍｇ／ｃｍ2以下であることが好ましく、１．５ｍｇ／ｃｍ2以下であることがより好ましく、１．１０ｍｇ／ｃｍ2以下であることがさらに好ましい。具体的には、保湿性布地による２時間吸湿量は、０．７０ｍｇ／ｃｍ2以上１．８ｍｇ／ｃｍ2以下であることが好ましく、０．７５ｍｇ／ｃｍ2以上１．５ｍｇ／ｃｍ2以下であることがより好ましく、０．８０ｍｇ／ｃｍ2以上１．３ｍｇ／ｃｍ2以下であることがさらに好ましく、０．８５ｍｇ／ｃｍ2以上１．１０ｍｇ／ｃｍ2以下であることが特に好ましい。 The 2-hour moisture absorption amount of the moisturizing fabric is 0.70 mg/cm 2 or more. This can prevent drying of the skin surface. The 2-hour moisture absorption amount of the moisturizing fabric is preferably 0.75 mg/cm 2 or more, more preferably 0.80 mg/cm 2 or more, and even more preferably 0.85 mg/cm 2 or more. In addition, from the viewpoint of texture, the moisture absorption amount for 2 hours by the moisturizing fabric is preferably 1.8 mg/cm 2 or less, more preferably 1.5 mg/cm 2 or less, and 1.10 mg/cm 2 or less. is more preferable. Specifically, the 2-hour moisture absorption amount of the moisturizing fabric is preferably 0.70 mg/cm 2 or more and 1.8 mg/cm 2 or less, and 0.75 mg/cm 2 or more and 1.5 mg/cm 2 or less. more preferably 0.80 mg/cm 2 or more and 1.3 mg/cm 2 or less, and particularly preferably 0.85 mg/cm 2 or more and 1.10 mg/cm 2 or less.
　保湿性布地による２時間肌水分増加率及び２時間吸湿量を下記のように測定する。 The 2-hour skin moisture increase rate and 2-hour moisture absorption by the moisturizing fabric are measured as follows.
　（２時間肌水分増加率及び２時間吸湿量）
（１）測定対象の布地を一定サイズ（３ｃｍ×６ｃｍ）にカットし、カットした布地に肌面に固定するためにセロハンテープを貼付し、テープ付き布地の重量を測定し、Ｗ１とする。
（２）布地を付着する前腕内側の部位の肌水分率を誘電率型水分率計で測定し、Ｓｗ１とする。
（３）テープ付き布地を、布地が肌面に接するように前腕内側に貼付する。
（４）２時間放置したのちテープ付き布地を回収し重量を測定し、Ｗ２とし、下記数式（１）にて、２時間吸湿量を算出する。
（５）布地を剥がした後の前腕内側の肌面の水分率を測定し、Ｓｗ２とし、下記数式（２）にて、２時間肌水分増加率を算出する。
　なお、測定は、温度２３±２℃、相対湿度６５±５％の条件下で行う。
　［数式１］
　２時間吸湿量（ｇ／ｃｍ2）＝（Ｗ２－Ｗ１）ｇ／（３×６）ｃｍ2
　［数式２］
　２時間肌水分増加率（％）＝［（Ｓｗ２－Ｓｗ１）／Ｓｗ１］×１００ (2-hour skin moisture increase rate and 2-hour moisture absorption)
(1) Cut the fabric to be measured into a certain size (3 cm × 6 cm), attach cellophane tape to the cut fabric to fix it to the skin surface, measure the weight of the taped fabric, and set it as W1.
(2) The skin moisture content of the inner part of the forearm where the fabric is to be applied is measured with a dielectric moisture content meter and designated as Sw1.
(3) The taped fabric is attached to the inside of the forearm so that the fabric is in contact with the skin.
(4) After leaving it for 2 hours, the taped fabric is collected, weighed, and set to W2, and the moisture absorption amount for 2 hours is calculated by the following formula (1).
(5) Measure the moisture content of the skin surface on the inside of the forearm after peeling off the fabric, set it as Sw2, and calculate the 2-hour skin moisture increase rate using the following formula (2).
The measurement is performed under conditions of a temperature of 23±2° C. and a relative humidity of 65±5%.
[Formula 1]
2-hour moisture absorption (g/cm 2 ) = (W2-W1) g/(3 x 6) cm 2
[Formula 2]
2-hour skin moisture increase rate (%) = [(Sw2-Sw1)/Sw1] x 100
　保湿性布地は、洗濯耐久性に優れ、例えば、５０回洗濯後の２時間肌水分増加率が０．８％以上１．８％以下であることが好ましく、０．９％以上１．７％以下であることがより好ましく、１．０％以上１．６％以下であることがさらに好ましく、１．１％以上１．５％以下であることがさらにより好ましく、１．１％以上１．４％以下であることが特に好ましい。 The moisturizing fabric has excellent washing durability, and for example, the skin moisture increase rate for 2 hours after washing 50 times is preferably 0.8% or more and 1.8% or less, and 0.9% or more and 1.7%. is more preferably 1.0% or more and 1.6% or less, even more preferably 1.1% or more and 1.5% or less, and 1.1% or more and 1.5% or less. 4% or less is particularly preferable.
　保湿性布地は、洗濯耐久性に優れ、例えば、５０回洗濯後の２時間吸湿量が０．７０ｍｇ／ｃｍ2以上１．８ｍｇ／ｃｍ2以下であることが好ましく、０．７５ｍｇ／ｃｍ2以上１．５ｍｇ／ｃｍ2以下であることがより好ましく、０．８０ｍｇ／ｃｍ2以上１．３ｍｇ／ｃｍ2以下であることがさらに好ましく、０．８５ｍｇ／ｃｍ2以上１．１０ｍｇ／ｃｍ2以下であることが特に好ましい。 The moisture-retaining fabric has excellent washing durability. For example, the moisture absorption for 2 hours after washing 50 times is preferably 0.70 mg/cm 2 or more and 1.8 mg/cm 2 or less, and preferably 0.75 mg/cm 2 or more. It is more preferably 1.5 mg/cm 2 or less, further preferably 0.80 mg/cm 2 or more and 1.3 mg/cm 2 or less, and 0.85 mg/cm 2 or more and 1.10 mg/cm 2 or less. It is particularly preferred to have
　保湿性布地は、曲げ特性に優れており、例えば、柔らかい風合いを有する観点から、曲げ剛性Ｂが０．１９ｇｆ・ｃｍ2／ｃｍ以下であることが好ましく、０．１８ｇｆ・ｃｍ2／ｃｍ以下であることがより好ましく、０．１６ｇｆ・ｃｍ2／ｃｍ以下であることがさらに好ましい。保湿性布地は、例えば、弾力感及び可縫性に優れるという観点から、曲げ剛性Ｂが０．０１５ｇｆ・ｃｍ2／ｃｍ以上であることが好ましく、０．０２０ｇｆ・ｃｍ2／ｃｍ以上であることがより好ましく、０．０３０ｇｆ・ｃｍ2／ｃｍ以上であることがさらに好ましい。具体的には、曲げ剛性Ｂは、０．０１５ｇｆ・ｃｍ2／ｃｍ以上０．１９ｇｆ・ｃｍ2／ｃｍ以下であることが好ましく、０．０２０ｇｆ・ｃｍ2／ｃｍ以上０．１８ｇｆ・ｃｍ2／ｃｍ以下であることがより好ましく、０．０３０ｇｆ・ｃｍ2／ｃｍ以上０．１６ｇｆ・ｃｍ2／ｃｍ以下であることがさらに好ましい。 The moisture-retaining fabric has excellent flexural properties. For example, from the viewpoint of having a soft texture, the flexural rigidity B is preferably 0.19 gf·cm 2 /cm or less, and preferably 0.18 gf·cm 2 /cm or less. It is more preferably 0.16 gf·cm 2 /cm or less. The moisture-retaining fabric preferably has a flexural rigidity B of 0.015 gf·cm 2 /cm or more, more preferably 0.020 gf·cm 2 /cm or more, from the viewpoint of excellent elasticity and sewability. is more preferable, and 0.030 gf·cm 2 /cm or more is even more preferable. Specifically, the flexural rigidity B is preferably 0.015 gf·cm 2 /cm or more and 0.19 gf·cm 2 /cm or less, and more preferably 0.020 gf·cm 2 /cm or more and 0.18 gf·cm 2 /cm or more. cm or less, and more preferably 0.030 gf·cm 2 /cm or more and 0.16 gf·cm 2 /cm or less.
　保湿性布地は、曲げ特性に優れており、例えば、ソフトな風合いを有する観点から、曲げヒステリシス２ＨＢが０．４５ｇｆ・ｃｍ／ｃｍ以下であることが好ましく、０．４２ｇｆ・ｃｍ／ｃｍ以下であることがより好ましく、０．４０ｇｆ・ｃｍ／ｃｍ以下であることがさらに好ましく、０．３８ｇｆ・ｃｍ／ｃｍ以下であることが特に好ましい。保湿性布地は、例えば、弾力性及び可縫性に優れる観点から、曲げヒステリシス２ＨＢは、０．０１５ｇｆ・ｃｍ／ｃｍ以上であることが好ましく、０．０２０ｇｆ・ｃｍ／ｃｍ以上であることがより好ましく、０．０４０ｇｆ・ｃｍ／ｃｍ以上であることがさらに好ましく、０．０７０ｇｆ・ｃｍ／ｃｍ以上であることが特に好ましい。具体的には、保湿性布地は、曲げヒステリシス２ＨＢは、０．０１５ｇｆ・ｃｍ／ｃｍ以上０．４５ｇｆ・ｃｍ／ｃｍ以下であることが好ましく、０．０２０ｇｆ・ｃｍ／ｃｍ以上０．４２ｇｆ・ｃｍ／ｃｍ以下であることがより好ましく、０．０４０ｇｆ・ｃｍ／ｃｍ以上０．４０ｇｆ・ｃｍ／ｃｍ以下であることがさらに好ましく、０．０７０ｇｆ・ｃｍ／ｃｍ以上０．３８ｇｆ・ｃｍ／ｃｍ以下であることが特に好ましい。 The moisturizing fabric has excellent bending properties, and for example, from the viewpoint of having a soft texture, the bending hysteresis 2HB is preferably 0.45 gf cm / cm or less, and is 0.42 gf cm / cm or less. is more preferably 0.40 gf·cm/cm or less, and particularly preferably 0.38 gf·cm/cm or less. For example, from the viewpoint of excellent elasticity and sewability, the moisture-retaining fabric preferably has a bending hysteresis 2HB of 0.015 gf cm/cm or more, more preferably 0.020 gf cm/cm or more. It is preferably 0.040 gf·cm/cm or more, and particularly preferably 0.070 gf·cm/cm or more. Specifically, the moisture-retaining fabric preferably has a bending hysteresis 2HB of 0.015 gf cm/cm or more and 0.45 gf cm/cm or less, and 0.020 gf cm/cm or more and 0.42 gf cm/cm or more. / cm or less, more preferably 0.040 gf cm / cm or more and 0.40 gf cm / cm or less, and 0.070 gf cm / cm or more and 0.38 gf cm / cm or less It is particularly preferred to have
　保湿性布地の曲げ剛性Ｂ及び曲げヒステリシス２ＨＢは、ＫＥＳ－ＦＢ３（カトーテック（株）製）にて、試料（有効長さ２０ｃｍ、幅１ｃｍ）の一端を固定し、他端を移動させて、曲率Ｋ＝±２．５ｃｍ-1の範囲で等速度（変形速度０．５ｃｍ-1／秒）の条件下で測定することができる。 Bending rigidity B and bending hysteresis 2HB of the moisture-retaining fabric were obtained by fixing one end of the sample (effective length 20 cm, width 1 cm) with KES-FB3 (manufactured by Kato Tech Co., Ltd.) and moving the other end. It can be measured under constant velocity (deformation rate 0.5 cm -1 /sec) in the range of curvature K=±2.5 cm -1 .
　保湿性布地は、せん断特性に優れており、例えば、柔らかく、身体にフィットしやすい観点から、せん断剛性Ｇが０．４５ｇｆ／ｃｍ・ｄｅｇ以下であることが好ましく、０．４２ｇｆ／ｃｍ・ｄｅｇ以下であることがより好ましく、０．３９ｇｆ／ｃｍ・ｄｅｇ以下であることがさらに好ましい。保湿性布地は、例えば、しなやかな風合い及び可縫性を有する観点から、せん断剛性Ｇが０．１５ｇｆ／ｃｍ・ｄｅｇ以上であることが好ましく、０．１８ｇｆ／ｃｍ・ｄｅｇ以上であることがより好ましく、０．２０ｇｆ／ｃｍ・ｅｇ以上であることがさらに好ましい。具体的には、保湿性布地は、せん断剛性Ｇが０．１５ｇｆ／ｃｍ・ｄｅｇ以上０．４５ｇｆ／ｃｍ・ｄｅｇ以下であることが好ましく、０．１８ｇｆ／ｃｍ・ｄｅｇ以上０．４２ｇｆ／ｃｍ・ｄｅｇ以下であることがより好ましく、０．２０ｇｆ／ｃｍ・ｄｅｇ以上０．４２ｇｆ／ｃｍ・ｄｅｇ以下であることがさらに好ましい。 The moisturizing fabric has excellent shear properties, and for example, from the viewpoint of being soft and easy to fit on the body, the shear rigidity G is preferably 0.45 gf/cm deg or less, and 0.42 gf/cm deg or less. is more preferably 0.39 gf/cm·deg or less. For example, the moisture-retaining fabric preferably has a shear rigidity G of 0.15 gf/cm deg or more, more preferably 0.18 gf/cm deg or more, from the viewpoint of having a supple texture and sewability. It is preferably 0.20 gf/cm·eg or more, and more preferably 0.20 gf/cm·eg or more. Specifically, the moisture-retaining fabric preferably has a shear rigidity G of 0.15 gf/cm·deg or more and 0.45 gf/cm·deg or less, and 0.18 gf/cm·deg or more and 0.42 gf/cm·deg or more. It is more preferably 0.20 gf/cm·deg or more and 0.42 gf/cm·deg or less.
　保湿性布地のせん断剛性Ｇは、ＫＥＳ―ＦＢ１(カトーテック（株））にて、試料（サイズ２０ｃｍ×２０ｃｍ）を用い、せん断力２．５ｇｆ／ｃｍ、せん断ひずみ速度０．００８３４／ｓ、せん断角±８°の条件下で測定することができる。 The shear stiffness G of the moisture-retaining fabric was determined by KES-FB1 (Kato Tech Co., Ltd.) using a sample (size 20 cm × 20 cm), shear force 2.5 gf / cm, shear strain rate 0.00834 / s, shear It can be measured under the conditions of an angle of ±8°.
　保湿性布地は、保温性に優れる観点から、肌に被覆した場合、１時間後の肌表面の温度Ｔ１と２時間後の肌表面の温度Ｔ２の差（Ｔ１－Ｔ２）が０．１０℃未満であることが好ましく、０．０８℃以下であることがより好ましく、０．０６℃以下であることがさらに好ましい。 From the viewpoint of excellent heat retention, when the moisturizing fabric is applied to the skin, the difference (T1-T2) between the skin surface temperature T1 after 1 hour and the skin surface temperature T2 after 2 hours is less than 0.10 ° C. is preferably 0.08° C. or lower, and even more preferably 0.06° C. or lower.
　保湿性布地は、再生コラーゲン繊維を含む。再生コラーゲン繊維としては、特に限定されず、公知の再生コラーゲン繊維を適宜用いることができる。例えば、再生コラーゲン繊維は、コラーゲン原料を溶解処理し、可溶化して得られた可溶化コラーゲン溶液を紡糸して得られた可溶化再生コラーゲン繊維を架橋する（不溶化する）ことで得ることができる。 The moisturizing fabric contains regenerated collagen fibers. The regenerated collagen fibers are not particularly limited, and known regenerated collagen fibers can be used as appropriate. For example, regenerated collagen fibers can be obtained by cross-linking (insolubilizing) the solubilized regenerated collagen fibers obtained by spinning the solubilized collagen solution obtained by dissolving and solubilizing the collagen raw material. .
　コラーゲン原料としては、牛、豚、馬、鹿、兎等の動物の皮を用いることができる。好ましくは、牛等の動物から得られるフレッシュな床皮や塩漬けした生皮を用いる。このようなコラーゲン原料に含有されるコラーゲンは、部分的に架橋している不溶性のコラーゲンであるために、架橋を切断する可溶化処理が施される。可溶化処理の方法としては、公知のアルカリ可溶化法や酵素可溶化法等を用いることができる。 As a collagen raw material, skins of animals such as cows, pigs, horses, deer, and rabbits can be used. Fresh split hides and salted rawhide obtained from animals such as cattle are preferably used. Since the collagen contained in such a collagen raw material is insoluble collagen that is partially crosslinked, it is subjected to a solubilization treatment to break the crosslinks. As a solubilization method, a known alkali solubilization method, enzyme solubilization method, or the like can be used.
　可溶化処理することで水に溶解可能になったコラーゲンは、例えば塩酸水溶液、酢酸水溶液、乳酸水溶液等の酸の水溶液でコラーゲン（固形分）濃度が１重量％以上１５重量％以下、好ましくは２重量％以上１０重量％以下程度であり、ｐＨ２以上４．５以下の範囲のコラーゲンの紡糸液に調製される。なお、得られたコラーゲンの紡糸液は、必要に応じて減圧攪拌下で脱泡を施し、水不溶分である細かいゴミを除去するために濾過を行ってもよい。コラーゲンの紡糸液を、例えば、紡糸ノズルやスリットを通して無機塩水溶液や有機溶媒に吐出し、凝固することにより可溶化再生コラーゲン繊維を形成することができる。得られた可溶化再生コラーゲン繊維を、架橋剤で架橋して不溶化することでコラーゲン繊維を得ることができる。架橋剤としては、特に限定されず、例えば、有機架橋剤や金属化合物等が挙げられる。有機架橋剤としては、例えば、ホルムアルデヒド等のアルデヒド化合物、エピクロロヒドリン等のエポキシ化合物等が挙げられる。金属化合物としては、例えば、ジルコニウム塩、アルミニウム塩等を用いることができる。これらの有機架橋剤や金属化合物は、一つを単独で用いてもよく、二つ以上を併用してもよい。 Collagen that has become soluble in water by the solubilization treatment is, for example, an acid aqueous solution such as a hydrochloric acid aqueous solution, an acetic acid aqueous solution, or a lactic acid aqueous solution, and the collagen (solid content) concentration is 1% by weight or more and 15% by weight or less, preferably 2%. A collagen spinning solution is prepared in a range of about 10% by weight to 10% by weight and a pH range of 2 to 4.5. The obtained collagen spinning solution may be subjected to defoaming under stirring under reduced pressure, if necessary, and may be filtered to remove fine dust, which is a water-insoluble matter. A collagen spinning solution can be discharged, for example, through a spinning nozzle or a slit into an inorganic salt aqueous solution or an organic solvent, and solidified to form a solubilized regenerated collagen fiber. Collagen fibers can be obtained by cross-linking the obtained solubilized regenerated collagen fibers with a cross-linking agent to make them insolubilized. The cross-linking agent is not particularly limited, and examples thereof include organic cross-linking agents and metal compounds. Examples of organic cross-linking agents include aldehyde compounds such as formaldehyde and epoxy compounds such as epichlorohydrin. Examples of metal compounds that can be used include zirconium salts and aluminum salts. One of these organic cross-linking agents and metal compounds may be used alone, or two or more thereof may be used in combination.
　保湿性布地は、保湿性、柔軟性及び蒸れにくさの観点から、再生コラーゲン繊維を４０重量％以上含むことが好ましく、４５重量％以上含むことがより好ましく、５０重量％以上含むことがさらに好ましく、５５重量％以上含むことが特に好ましい。保湿性布地は、再生コラーゲン繊維１００重量％からなるものであってもよいが、引張特性、せん断特性及び曲げ特性の観点から、再生コラーゲン繊維を８０重量％以下含むことが好ましく、７５重量％以下含むことがより好ましく、７０重量％以下含むことがさらに好ましい。 The moisturizing fabric preferably contains 40% by weight or more of regenerated collagen fibers, more preferably 45% by weight or more, and even more preferably 50% by weight or more, from the viewpoint of moisture retention, flexibility, and resistance to stuffiness. , at least 55% by weight. The moisture-retaining fabric may consist of 100% by weight of regenerated collagen fibers, but from the viewpoint of tensile properties, shear properties and bending properties, it preferably contains 80% by weight or less of regenerated collagen fibers, and 75% by weight or less. More preferably, it contains 70% by weight or less.
　保湿性布地は、保湿性、柔軟性、蒸れにくさ、風合い及び引張強度に優れる観点から、再生コラーゲン繊維を４０重量％以上７０重量％以下、及び他の繊維を３０重量％以上６０重量％以下含むことが好ましく、再生コラーゲン繊維を４５重量％以上６５重量％以下、及び他の繊維を３５重量％以上５５重量％以下含むことがより好ましく、再生コラーゲン繊維を４５重量％以上６０重量％以下、及び他の繊維を４０重量％以上５５重量％以下含むことがさらに好ましい。 The moisture-retaining fabric contains 40% to 70% by weight of regenerated collagen fibers and 30% to 60% by weight of other fibers from the viewpoint of excellent moisture retention, flexibility, resistance to stuffiness, texture, and tensile strength. It preferably contains 45% to 65% by weight of regenerated collagen fibers, and more preferably 35% to 55% by weight of other fibers, and 45% to 60% by weight of regenerated collagen fibers, and 40% by weight or more and 55% by weight or less of other fibers.
　他の繊維としては、特に限定されず、通常肌着に用いる天然繊維及び化学繊維等を用いることができる。天然繊維としては、ウール等の獣毛繊維、コットン及び麻等の天然セルロース繊維等が挙げられる。化学繊維としては、ポリエステル系繊維、アクリル繊維（ポリアクリロニトリル繊維）、アクリル系繊維（モダクリル繊維）、ナイロン繊維、セルロース系繊維等を適宜用いることができる。セルロース系繊維としては、ビスコースレーヨン、銅アンモニアレーヨン等の再生セルロース繊維、及びリヨセル等の溶剤紡糸されたレーヨン等を用いることができる。ポリエステル系繊維としては、ポリエチレンテレフタレート繊維等を用いることができる。保湿性及び蒸れにくさの観点から、ビスコースレーヨン等の再生セルロース繊維を好適に用いることが好ましい。曲げ剛性及びせん断剛性の観点から、アクリル系繊維や天然セルロース繊維を好適に用いることができる。他の繊維は、一つを単独で用いてもよく、二つ以上を組み合わせて用いてもよい。他の繊維としては、ポリエステル系繊維、アクリル繊維、及びセルロース系繊維からなる群から選ばれる一つ以上の繊維を用いてもよい。 Other fibers are not particularly limited, and natural fibers and chemical fibers that are usually used for underwear can be used. Examples of natural fibers include animal hair fibers such as wool, and natural cellulose fibers such as cotton and hemp. As chemical fibers, polyester fibers, acrylic fibers (polyacrylonitrile fibers), acrylic fibers (modacrylic fibers), nylon fibers, cellulose fibers, and the like can be appropriately used. As cellulosic fibers, regenerated cellulose fibers such as viscose rayon and cuprammonium rayon, and solvent-spun rayon such as lyocell can be used. A polyethylene terephthalate fiber or the like can be used as the polyester fiber. From the viewpoint of moisture retention and resistance to stuffiness, it is preferable to suitably use regenerated cellulose fibers such as viscose rayon. From the viewpoint of bending rigidity and shearing rigidity, acrylic fibers and natural cellulose fibers can be preferably used. Other fibers may be used singly or in combination of two or more. As other fibers, one or more fibers selected from the group consisting of polyester fibers, acrylic fibers, and cellulosic fibers may be used.
　保湿性布地において、再生コラーゲン繊維及び他の繊維は、特に限定されないが、いずれも、例えば、肌触りが良好であるという観点から、単繊維繊度が１０ｄｔｅｘ以下であることが好ましく、８ｄｔｅｘ以下であることがより好ましく、５ｄｔｅｘ以下であることがさらに好ましく、３ｄｔｅｘ以下であることが特に好ましい。また、入手性や汎用性の観点から、再生コラーゲン繊維及び他の繊維は、いずれも単繊維繊度が０．５ｄｔｅｘ以上であることが好ましく、０．６ｄｔｅｘ以上であることがより好ましく、０．８ｄｔｅｘ以上であることがさらに好ましい。 In the moisture-retaining fabric, the regenerated collagen fibers and other fibers are not particularly limited, but both of them preferably have a single fiber fineness of 10 dtex or less, and 8 dtex or less, from the viewpoint of, for example, good touch. is more preferable, 5 dtex or less is more preferable, and 3 dtex or less is particularly preferable. From the viewpoint of availability and versatility, the regenerated collagen fibers and other fibers preferably have a single fiber fineness of 0.5 dtex or more, more preferably 0.6 dtex or more, and more preferably 0.8 dtex. It is more preferable that it is above.
　保湿性布地において、再生コラーゲン繊維及び他の繊維は、長繊維でもよく、短繊維でもよい。紡績糸として用いる場合は、再生コラーゲン繊維及び他の繊維は、いずれも、繊維長が２６ｍｍ以上１２６ｍｍ以下であることが好ましく、３５ｍｍ以上７６ｍｍ以下であることがより好ましい。紡績糸の太さは、特に限定されないが、例えば、風合いの観点から、イギリス式綿番手で５／１以上１００／１以下であってもよい。 In the moisturizing fabric, the regenerated collagen fibers and other fibers may be long fibers or short fibers. When used as spun yarn, the regenerated collagen fibers and other fibers preferably have a fiber length of 26 mm or more and 126 mm or less, more preferably 35 mm or more and 76 mm or less. The thickness of the spun yarn is not particularly limited, but may be, for example, 5/1 or more and 100/1 or less in British cotton count from the viewpoint of texture.
　保湿性布地は、編物であってもよく、織物であってもよい。編物及び織物は、単層でもよく、２層以上の多層でもよい。編物の組織は、特に限定されず、丸編、横編、経編、パイル編のいずれでもよく、例えば、平編、天竺編、フライス編（リブ編，ゴム編，畔編）、スムース編（両面編）、ゴム編、パール編、デンビー組織、コード組織、アトラス組織、鎖編組織、挿入組織等が挙げられる。織物の組織についても、特に限定されず、平織、綾織、朱子織等の三原組織でもよく、ドビーやジャガー等の特殊織機を用いた柄織物でもよい。肌感触、身体へのフィット性及び通気性の観点から、肌着に用いる場合は、編物であることが好ましい。 The moisturizing fabric may be a knitted fabric or a woven fabric. Knitted fabrics and woven fabrics may be single-layered or multi-layered with two or more layers. The knitted fabric is not particularly limited, and may be any of circular knitting, horizontal knitting, warp knitting, and pile knitting. double-sided knitting), rubber knitting, pearl knitting, Denby weaving, cord weaving, atlas weaving, chain weaving, insertion weaving, and the like. The texture of the woven fabric is also not particularly limited, and may be a Mihara weave such as plain weave, twill weave, or satin weave, or patterned woven fabric using a special loom such as dobby or jaguar. From the viewpoints of feel on the skin, fit to the body, and breathability, it is preferably a knitted fabric when used for underwear.
　保湿性布地は、特に限定されないが、例えば肌着に用いた場合の強度及び着用感の観点から、目付が８０ｇ／ｍ2以上３５０ｇ／ｍ2以下であることが好ましく、８５ｇ／ｍ2以上３３０ｇ／ｍ2以下であることがより好ましく、目付が９０ｇ／ｍ2以上３２０ｇ／ｍ2以下であることがさらに好ましく、１００ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、１１０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、１２０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、１４０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、１６０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、１８０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、２００ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、２２０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、２４０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、２６０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましく、２８０ｇ／ｍ2以上３１５ｇ／ｍ2以下であることがさらにより好ましい。 Although the moisturizing fabric is not particularly limited, for example, from the viewpoint of strength and wearing feeling when used as underwear, it is preferable that the basis weight is 80 g/m 2 or more and 350 g/m 2 or less, and 85 g/m 2 or more and 330 g/m 2 or more. m 2 or less, more preferably 90 g/m 2 or more and 320 g/m 2 or less, still more preferably 100 g/m 2 or more and 315 g/m 2 or less, and 110 g/m 2 or less. It is even more preferably 2 or more and 315 g/m 2 or less, even more preferably 120 g/m 2 or more and 315 g/m 2 or less, and even more preferably 140 g/m 2 or more and 315 g/m 2 or less. , more preferably 160 g/m 2 or more and 315 g/m 2 or less, even more preferably 180 g/m 2 or more and 315 g/m 2 or less, and 200 g/m 2 or more and 315 g/m 2 or less is even more preferably 220 g/m 2 or more and 315 g/m 2 or less, even more preferably 240 g/m 2 or more and 315 g/m 2 or less, and 260 g/m 2 or more and 315 g/m 2 or less. It is even more preferably 280 g/m 2 or more and 315 g/m 2 or less.
　（肌着）
　保湿性布地は、肌着に好適に用いることができ、肌着は保湿性及び柔軟性が良好であり、蒸れにくい。肌着の全部を本発明の保湿性布地で構成してもよく、一部を本発明の保湿性布地で構成してもよい。 (underwear)
Moisture-retaining fabrics can be suitably used for underwear, and the undergarments have good moisture-retaining properties and flexibility, and are less stuffy. The undergarment may be entirely composed of the moisturizing fabric of the present invention, or may be partially composed of the moisturizing fabric of the present invention.
　肌着は、肌に直接接して着用されるものであればよく、特に限定されない。例えば、シャツ、ホームウェアー、ランジェリー、パンツ（ショーツ、ガ－ドル等を含む）、腹巻き、靴下、手袋、スポ－ツ用品等が挙げられる。保湿性生地は、肌着に加えて、肌に接して使用する寝具、タオル等の他の繊維製品に用いてもよい。 The underwear is not particularly limited as long as it is worn in direct contact with the skin. Examples include shirts, home wear, lingerie, pants (including shorts, girdles, etc.), belly wraps, socks, gloves, sporting goods, and the like. In addition to underwear, the moisture-retaining fabric may be used for other textile products such as bedclothes and towels that are used in contact with the skin.
　以下実施例により本発明を更に具体的に説明する。なお、本発明は下記の実施例に限定されるものではない。 The present invention will be explained more specifically by way of examples below. In addition, the present invention is not limited to the following examples.
　測定方法及び評価方法を下記のとおりである。なお、測定及び評価は、温度２３±２℃、相対湿度６５±５％の条件下で行った。 The measurement method and evaluation method are as follows. The measurement and evaluation were performed under conditions of a temperature of 23±2° C. and a relative humidity of 65±5%.
　（２時間肌水分増加率及び２時間吸湿量）
（１）測定対象の布地を一定サイズ（３ｃｍ×６ｃｍ）にカットし、カットした布地に肌面に固定するためにセロハンテープ（ニチバン（株）製「セロテープ（登録商標）」、１８ｍｍ×３５ｍ、ＣＴ４０５ＡＰ－１８）を貼付し、テープ付き布地の重量を測定し、Ｗ１とした。
（２）布地を付着する前腕内側の部位の肌水分率を誘電率型水分率計で測定し、Ｓｗ１とした。
（３）テープ付き布地を、布地が肌面に接するように前腕内側に貼付した。
（４）２時間放置したのちテープ付き布地を回収し重量を測定し、その平均値をＷ２とし、下記数式（１）にて、２時間吸湿量を算出した。
（５）布地を剥がした後の前腕内側の肌面の水分率を測定し、Ｓｗ２とし、下記数式（２）にて、２時間肌水分増加率を算出した。
　ｎは７とした。
　［数式１］
　２時間吸湿量（ｇ／ｃｍ2）＝（Ｗ２－Ｗ１）ｇ／（３×６）ｃｍ2
　［数式２］
　２時間肌水分増加率（％）＝［（Ｓｗ２－Ｓｗ１）／Ｓｗ１］×１００ (2-hour skin moisture increase rate and 2-hour moisture absorption)
(1) Cut the fabric to be measured into a certain size (3 cm × 6 cm), and use a cellophane tape (Nichiban Co., Ltd. “Cellotape (registered trademark)”, 18 mm × 35 m, 18 mm × 35 m, 18 mm × 35 m) to fix the cut cloth to the skin surface. CT405AP-18) was applied, and the weight of the taped fabric was measured and designated as W1.
(2) The skin moisture content of the site on the inside of the forearm where the fabric was adhered was measured with a dielectric moisture content meter and designated as Sw1.
(3) The taped cloth was applied to the inside of the forearm so that the cloth was in contact with the skin.
(4) After being left for 2 hours, the taped cloth was collected and weighed, and the average value was taken as W2, and the moisture absorption for 2 hours was calculated by the following formula (1).
(5) After the fabric was peeled off, the moisture content of the skin surface on the inside of the forearm was measured and designated as Sw2, and the 2-hour skin moisture increase rate was calculated using the following formula (2).
n was set to 7.
[Formula 1]
2-hour moisture absorption (g/cm 2 ) = (W2-W1) g/(3 x 6) cm 2
[Formula 2]
2-hour skin moisture increase rate (%) = [(Sw2-Sw1)/Sw1] x 100
　（保温性）
　測定対象の布地を一定サイズ（３ｃｍ×６ｃｍ）にカットし、カットした布地に肌面に固定するためにセロハンテープで周囲を縁取りし、テープ付き布地を布地が肌面に接するように前腕内側に貼付して温度の変化を観察した。温度変化の観察は赤外線サーモグラフィカメラで撮影し、肌に被覆した布地表面の温度変化を計測した。貼付直後、１時間後、２時間後の布地の表面温度を計測し、それぞれ６回の測定結果の平均値を求め、肌の表面温度とした。貼付直後の肌の表面温度をＴ０、１時間後の肌の表面温度をＴ１、２時間後の肌の表面温度をＴ２とした。 (heat retention)
Cut the fabric to be measured into a certain size (3 cm x 6 cm), hem the cut fabric with cellophane tape to fix it to the skin surface, and place the taped fabric on the inner side of the forearm so that the fabric is in contact with the skin surface. The change in temperature was observed after sticking. Observation of the temperature change was taken with an infrared thermography camera, and the temperature change on the surface of the cloth covering the skin was measured. The surface temperature of the fabric was measured immediately after application, 1 hour, and 2 hours after application, and the average value of the measurement results of 6 times was obtained to obtain the surface temperature of the skin. The skin surface temperature immediately after application was T0, the skin surface temperature after 1 hour was T1, and the skin surface temperature after 2 hours was T2.
　（せん断特性）
　ＫＥＳ―ＦＢ１(カトーテック（株））にて、試料（サイズ２０ｃｍ×２０ｃｍ）を用い、せん断力２．５ｇｆ／ｃｍ、せん断ひずみ速度０．００８３４／ｓ、せん断角±８°の条件下でせん断剛性を測定した。 (Shear property)
At KES-FB1 (Kato Tech Co., Ltd.), using a sample (size 20 cm × 20 cm), shearing under the conditions of a shear force of 2.5 gf / cm, a shear strain rate of 0.00834 / s, and a shear angle of ± 8 ° Stiffness was measured.
　（曲げ特性）
　保湿性布地の曲げ剛性Ｂ及び曲げヒステリシス２ＨＢは、ＫＥＳ－ＦＢ３（カトーテック（株）製）にて、試料（有効長さ２０ｃｍ、幅１ｃｍ）の一端を固定し、他端を移動させて、曲率Ｋ＝±２．５ｃｍ-1の範囲で等速度（変形速度０．５ｃｍ-1／秒）の条件下で、曲げ剛性Ｂ及び曲げヒステリシス２ＨＢを測定した。曲げ剛性Ｂ及び曲げヒステリシス２ＨＢは、たて方向及びヨコ方向の平均値である。 (bending properties)
Bending rigidity B and bending hysteresis 2HB of the moisture-retaining fabric were obtained by fixing one end of the sample (effective length 20 cm, width 1 cm) with KES-FB3 (manufactured by Kato Tech Co., Ltd.) and moving the other end. Bending stiffness B and bending hysteresis 2HB were measured under the condition of constant velocity (deformation rate 0.5 cm -1 /sec) in the range of curvature K = ±2.5 cm -1 . Bending stiffness B and bending hysteresis 2HB are average values in the vertical and horizontal directions.
　実施例及び比較例において、下記繊維を用いた。
　（１）再生コラーゲン繊維：下記の製造例１で作製したものを用いた。
　＜製造例１＞
　牛の床皮を原料とし、アルカリで可溶化した皮片に３０重量％に希釈した過酸化水素水溶液を投入後、乳酸水溶液で溶解し、ｐＨ３．５、固形分７．５重量％に調整した原液を作製した。原液を減圧下で撹拌脱泡機（（株）ダルトン製、８ＤＭＶ型）により撹拌脱泡処理し、ピストン式紡糸原液タンクに移送し、さらに減圧下で静置して、脱泡を行った。かかる原液をピストンで押し出した後、ギアポンプ定量送液し、孔径１０μｍの焼結フィルターで濾過後、孔径０．０７ｍｍ、孔長０．５ｍｍ、孔数１０００の紡糸ノズルを通し、硫酸ナトリウム２０重量％を含有してなる２５℃の凝固浴（ホウ酸及び水酸化ナトリウムでｐＨ１１に調整）へ紡出速度５ｍ／分で吐出した。次に、得られた可溶化再生コラーゲン繊維を、エピクロロヒドリン１．７重量％、水酸化ナトリウム０．０２４６重量％、及び硫酸ナトリウム（東ソー（株）製の中性無水芒硝を使用）１７重量％を含有した水溶液に２５℃で４時間浸漬した後、さらに反応液温度を４３℃に昇温して２時間浸漬した。反応終了後に反応液を除去後、２５℃の水を用いて３回バッチ水洗を行った。この後、硫酸アルミニウム（日本軽金属（株）製の硫酸バンドを使用）５．０重量％、クエン酸三ナトリウム塩（扶桑化学工業（株）製精製クエン酸ナトリウムＭを使用）０．９重量％、水酸化ナトリウム１．２重量％を含有した水溶液に３０℃で浸漬し、反応開始から２時間後、３時間後および４時間にそれぞれ５重量％水酸化ナトリウム水溶液を反応液に添加した。その後、２５℃の水を用いて３回バッチ水洗を行った。水洗した繊維をプルロニック（登録商標）型ポリエーテル系静電防止剤からなる油剤を満たした浴槽に浸漬して油剤を付着させた。５０℃に調整した熱風対流式乾燥機を用いて緊張下で乾燥させ、単繊維繊度２ｄｔｅｘの再生コラーゲン繊維（トウ）を得た。ギアクリンパーでクリンプを付与したトウをロータリーカッターで繊維長５１ｍｍにカットすることで単繊維繊度２ｄｔｅｘ、繊維長５１ｍｍの再生コラーゲン繊維を得た。 The following fibers were used in Examples and Comparative Examples.
(1) Regenerated collagen fibers: those produced in Production Example 1 below were used.
<Production Example 1>
A 30% by weight aqueous solution of hydrogen peroxide diluted to 30% by weight was added to pieces of cow split skin that had been solubilized with alkali, and then dissolved in an aqueous lactic acid solution to adjust the pH to 3.5 and the solid content to 7.5% by weight. A stock solution was prepared. The stock solution was subjected to stirring and defoaming treatment under reduced pressure with a stirring and defoaming machine (manufactured by Dalton Co., Ltd., Model 8DMV), transferred to a piston-type spinning stock solution tank, and left to stand still under reduced pressure for defoaming. After extruding such a stock solution with a piston, it is fed by a gear pump at a constant rate, filtered through a sintered filter with a pore diameter of 10 μm, passed through a spinning nozzle with a pore diameter of 0.07 mm, a pore length of 0.5 mm, and 1000 holes, and sodium sulfate 20% by weight. was discharged at a spinning speed of 5 m/min into a 25° C. coagulation bath (adjusted to pH 11 with boric acid and sodium hydroxide) containing Next, the obtained solubilized regenerated collagen fibers were mixed with 1.7% by weight of epichlorohydrin, 0.0246% by weight of sodium hydroxide, and 17% sodium sulfate (using neutral anhydrous mirabilite manufactured by Tosoh Corporation). % by weight in an aqueous solution at 25° C. for 4 hours, and then the temperature of the reaction solution was raised to 43° C. and immersed for 2 hours. After the reaction was completed, the reaction solution was removed, and batch washing was performed three times using water at 25°C. After that, aluminum sulfate (using aluminum sulfate manufactured by Nippon Light Metal Co., Ltd.) 5.0% by weight, citric acid trisodium salt (using purified sodium citrate M manufactured by Fuso Chemical Industry Co., Ltd.) 0.9% by weight , immersed in an aqueous solution containing 1.2% by weight of sodium hydroxide at 30° C., and after 2 hours, 3 hours and 4 hours from the start of the reaction, a 5% by weight aqueous solution of sodium hydroxide was added to the reaction solution. After that, it was batch washed three times with water at 25°C. The water-washed fibers were immersed in a bath filled with an oil comprising a Pluronic (registered trademark) type polyether antistatic agent to adhere the oil. It was dried under tension using a hot air convection dryer adjusted to 50° C. to obtain a regenerated collagen fiber (tow) having a single fiber fineness of 2 dtex. The tow crimped by the gear crimper was cut to a fiber length of 51 mm by a rotary cutter to obtain regenerated collagen fibers having a single fiber fineness of 2 dtex and a fiber length of 51 mm.
　＜アクリル繊維＞
　単繊維繊度０．９ｄｔｅｘ、カット長３８ｍｍ、東レ（株）製
　＜ポリエステル系繊維＞
　ポリエチレンテレフタレート繊維、単繊維繊度１．７ｄｔｅｘ、カット長３８ｍｍ、東レ（株）製
　＜レーヨン繊維＞
　リヨセル繊維、単繊維繊度０．９ｄｔｅｘ、カット長３８ｍｍ、レンチング社製「マイクロテンセル」
　＜コットン＞
　平均繊維径４μｍ、平均カット長約３０ｍｍ <Acrylic fiber>
Single fiber fineness 0.9 dtex, cut length 38 mm, manufactured by Toray Industries, Inc. <Polyester-based fiber>
Polyethylene terephthalate fiber, single fiber fineness 1.7 dtex, cut length 38 mm, manufactured by Toray Industries, Inc. <Rayon fiber>
Lyocell fiber, single fiber fineness 0.9 dtex, cut length 38 mm, "Micro Tencel" manufactured by Lenzing
<Cotton>
Average fiber diameter 4 μm, average cut length about 30 mm
　（実施例１）
　製造例１で得られた再生コラーゲン繊維を用い、２インチ紡績機械でリング紡績し、再生コラーゲン繊維１００重量％からなる紡績糸（イギリス式綿番手：１０／１）を作製し、該紡績糸を用いて天竺編みで編物（目付３１３ｇ／ｍ2）を作製した。 (Example 1)
Using the regenerated collagen fibers obtained in Production Example 1, a spun yarn (British cotton count: 10/1) composed of 100% by weight of regenerated collagen fibers was produced by ring-spinning with a 2-inch spinning machine. A knitted fabric (basis weight: 313 g/m 2 ) was produced by tenjiku knitting.
　（実施例２～１５）
　再生コラーゲン繊維と、アクリル繊維、ポリエステル系繊維、レーヨン繊維又はコットンを下記表１及び２に示す含有量で混合し、２インチ紡績機械でリング紡績し、混紡糸（イギリス式綿番手：１０／１）を作製し、該混紡糸を用いて天竺編みで、下記表１及び２に示す目付を有する編物を作製した。 (Examples 2 to 15)
Regenerated collagen fibers and acrylic fibers, polyester fibers, rayon fibers or cotton were mixed at the contents shown in Tables 1 and 2 below, ring-spun with a 2-inch spinning machine, and blended yarn (British cotton count: 10/1 ), and using the blended yarn, a knitted fabric having a basis weight shown in Tables 1 and 2 below was produced by tenjiku knitting.
　（比較例１）
　アクリル繊維を用い、２インチ紡績機械でリング紡績し、アクリル繊維１００重量％からなる紡績糸（イギリス式綿番手：１０／１）を作製し、該紡績糸を用いて天竺編みで編物（目付３１９ｇ／ｍ2）を作製した。 (Comparative example 1)
Using acrylic fiber, ring-spun with a 2-inch spinning machine to produce a spun yarn (British cotton count: 10/1) composed of 100% by weight of acrylic fiber, and using the spun yarn, a knitted fabric (basis weight: 319 g) /m 2 ) was produced.
　（比較例２）
　ポリエステル繊維を用い、２インチ紡績機械でリング紡績し、ポリエステル繊維１００重量％からなる紡績糸（イギリス式綿番手：１０／１）を作製し、該紡績糸を用いて天竺編みで編物（目付３３７ｇ／ｍ2）を作製した。 (Comparative example 2)
Using a polyester fiber, ring-spun with a 2-inch spinning machine to produce a spun yarn (British cotton count: 10/1) composed of 100% by weight of polyester fiber, and using the spun yarn, a knitted fabric (basis weight: 337 g) /m 2 ) was produced.
　（比較例３）
　コットンを用い、２インチ紡績機械でリング紡績し、コットン１００重量％からなる紡績糸（イギリス式綿番手：１０／１）を作製し、該紡績糸を用いて天竺編みで編物（目付３６２ｇ／ｍ2）を作製した。 (Comparative Example 3)
Using cotton, ring-spun with a 2-inch spinning machine to produce a spun yarn made of 100% by weight of cotton (British cotton count: 10/1). 2 ) was fabricated.
　（比較例４）
　レーヨン繊維を用い、２インチ紡績機械でリング紡績し、レーヨン繊維１００重量％からなる紡績糸（イギリス式綿番手：１０／１）を作製し、該紡績糸を用いて天竺編みで編物（目付３０９ｇ／ｍ2）を作製した。 (Comparative Example 4)
Using rayon fiber, ring spinning is performed on a 2-inch spinning machine to produce a spun yarn (British cotton count: 10/1) composed of 100% by weight of rayon fiber. /m 2 ) was produced.
　（比較例５～６）
　再生コラーゲン繊維と、アクリル繊維又はポリエステル系繊維を、下記表３に示す含有量で混合し、２インチ紡績機械でリング紡績し、混紡糸（イギリス式綿番手：１０／１）を作製し、該混紡糸を用いて天竺編みで、下記表３に示す目付を有する編物を作製した。 (Comparative Examples 5-6)
Regenerated collagen fibers and acrylic fibers or polyester fibers were mixed at the contents shown in Table 3 below, and ring-spun with a 2-inch spinning machine to prepare a blended yarn (British cotton count: 10/1). Knitted fabrics having basis weights shown in Table 3 below were produced by jersey knitting using the blended yarns.
　実施例及び比較例の布地（編物）による２時間肌水分増加率及び２時間吸湿量を上記のとおりに測定し、その結果を下記表１～３に示した。また、実施例及び比較例の布地（編物）のせん断剛性Ｇ、曲げ剛性Ｂ及び曲げヒステリシス２ＨＢを上記のとおりに測定し、その結果を下記表１～３に示した。 The 2-hour skin moisture increase rate and the 2-hour moisture absorption of the fabrics (knitted fabrics) of Examples and Comparative Examples were measured as described above, and the results are shown in Tables 1 to 3 below. Further, the shear stiffness G, bending stiffness B and bending hysteresis 2HB of the fabrics (knitted fabrics) of Examples and Comparative Examples were measured as described above, and the results are shown in Tables 1 to 3 below.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000004
Figure JPOXMLDOC01-appb-T000004
　上記表１及び表２から分かるように、実施例において、布地による２時間肌水分増加率が０．８％以上１．８％以下であり、かつ２時間吸湿量が０．７０ｍｇ／ｃｍ2以上であり、蒸れにくく、かつ保湿性に優れていた。また、せん断剛性も低く、柔軟なものであった。 As can be seen from Tables 1 and 2 above, in Examples, the 2-hour skin moisture increase rate by the fabric is 0.8% or more and 1.8% or less, and the 2-hour moisture absorption amount is 0.70 mg/cm 2 or more. It was hard to get stuffy and was excellent in moisture retention. In addition, the shear rigidity was low and it was flexible.
　一方、表３から分かるように、比較例１、２、５及び６において、布地による２時間肌水分増加率が１．８％を超えており、肌蒸れが生じている上、２時間吸湿量が０．７０ｍｇ／ｃｍ2未満であり、保湿性にも劣っていた。比較例３では、布地による２時間肌水分増加率が０．８％未満、及び２時間吸湿量が０．７０ｍｇ／ｃｍ2未満であり、保湿性に劣っていた。比較例４では、２時間吸湿量が０．７０ｍｇ／ｃｍ2未満であり、保湿性に劣っていた。 On the other hand, as can be seen from Table 3, in Comparative Examples 1, 2, 5 and 6, the 2-hour skin moisture increase rate due to the fabric exceeded 1.8%, and the skin was stuffy, and the 2-hour moisture absorption amount. was less than 0.70 mg/cm 2 and was poor in moisture retention. In Comparative Example 3, the 2-hour skin moisture increase rate due to the fabric was less than 0.8%, and the 2-hour moisture absorption amount was less than 0.70 mg/cm 2 , indicating poor moisturizing properties. In Comparative Example 4, the 2-hour moisture absorption was less than 0.70 mg/cm 2 , indicating poor moisture retention.
　表４から分かるように、実施例や比較例の布地で肌を被覆した場合、肌の表面温度は被覆直後から１時間後には温度が上昇する傾向が観察されるが、一方、２時間後には1時間後よりも温度が低下していた。これは、被覆直後から１時間後までは布地で被覆することにより、肌から体温を保持した水分を吸収することで生地の温度が上昇するが、1時間後以降は布地からの水分の蒸散が増えることで温度が下降したと推測される。
　表４から、肌に被覆した場合、再生コラーゲン繊維を含む実施例の方が、再生コラーゲン繊維を含まない比較例に比べて、１時間後の肌表面の温度Ｔ１と２時間後の肌表面の温度Ｔ２の差（Ｔ１－Ｔ２）が小さく、保温性に優れることが分かる。これは、保湿性に優れる再生コラーゲン繊維を含む布地は水分を吸収する一方、該布地からの水分の蒸散は限定的であるため、温度が低下しにくく保温性を示すと推測される。 As can be seen from Table 4, when the skin was covered with the fabrics of Examples and Comparative Examples, the surface temperature of the skin tended to rise 1 hour after the coating, but on the other hand, 2 hours later. The temperature was lower than after 1 hour. This is because the temperature of the fabric rises by absorbing the moisture that retains the body temperature from the skin by covering with the fabric from immediately after covering until 1 hour later, but after 1 hour the moisture transpiration from the fabric stops. It is presumed that the temperature decreased due to the increase.
From Table 4, when the skin is covered, the examples containing regenerated collagen fibers are higher in the skin surface temperature T1 after 1 hour and the skin surface temperature after 2 hours compared to the comparative examples that do not contain regenerated collagen fibers. It can be seen that the difference in temperature T2 (T1-T2) is small and the heat retention is excellent. This is presumed to be due to the fact that fabrics containing regenerated collagen fibers, which have excellent moisture retention properties, absorb water, but evaporate water from the fabrics only to a limited extent, so that the temperature does not easily drop and the fabrics exhibit heat retention.
　本発明は、特に限定されないが、少なくとも、下記の実施形態を含むことが好ましい。
　［１］　保湿性布地であって、
　前記保湿性布地は、再生コラーゲン繊維を含み、
　前記保湿性布地による２時間肌水分増加率が０．８％以上１．８％以下であり、かつ２時間吸湿量が０．７０ｍｇ／ｃｍ2以上であることを特徴とする保湿性布地。
　［２］　前記保湿性布地は、曲げ剛性Ｂが０．０１５ｇｆ・ｃｍ2／ｃｍ以上０．１９ｇｆ・ｃｍ2／ｃｍ以下であり、かつ曲げヒステリシス２ＨＢが０．０１５ｇｆ・ｃｍ／ｃｍ以上０．４５ｇｆ・ｃｍ／ｃｍ以下である、［１］に記載の保湿性布地。
　［３］　前記保湿性布地は、せん断剛性Ｇが０．１５ｇｆ／ｃｍ・ｄｅｇ以上０．４５ｇｆ／ｃｍ・ｄｅｇ以下である、［１］又は［２］に記載の保湿性布地。
　［４］　前記保湿性布地は、肌に被覆した場合、１時間後の肌表面の温度Ｔ１と２時間後の肌表面の温度Ｔ２の差（Ｔ１－Ｔ２）が０．１０℃未満である、［１］～［３］のいずれかに記載の保湿性布地。
　［５］　前記保湿性布地は、再生コラーゲン繊維を４０重量％以上７０重量％以下含む、［１］～［４］のいずれかに記載の保湿性布地。
　［６］　前記保湿性布地は、さらに、ポリエステル系繊維、アクリル繊維、及びセルロース系繊維からなる群から選ばれる一つ以上の繊維を３０重量％以上６０重量％以下含む、［１］～［５］のいずれかに記載の保湿性布地。
　［７］　前記保湿性布地は、目付が８０ｇ／ｍ2以上３５０ｇ／ｍ2以下である、［１］～［６］のいずれかに記載の保湿性布地。
　［８］　前記保湿性布地は、編物である、［１］～［７］のいずれかに記載の保湿性布地。
　［９］［１］～［８］のいずれかに記載の保湿性布地を含むことを特徴とする肌着。 Although the present invention is not particularly limited, it preferably includes at least the following embodiments.
[1] A moisturizing fabric comprising:
The moisturizing fabric contains regenerated collagen fibers,
A moisturizing fabric characterized by having a 2-hour skin moisture increase rate of 0.8% or more and 1.8% or less and a 2-hour moisture absorption amount of 0.70 mg/cm 2 or more.
[2] The moisture-retaining fabric has a flexural rigidity B of 0.015 gf·cm 2 /cm or more and 0.19 gf·cm 2 /cm or less, and a flexural hysteresis 2HB of 0.015 gf·cm/cm or more and 0.45 gf. - The moisturizing fabric according to [1], which is cm/cm or less.
[3] The moisturizing fabric according to [1] or [2], wherein the moisturizing fabric has a shear rigidity G of 0.15 gf/cm·deg or more and 0.45 gf/cm·deg or less.
[4] When the moisturizing fabric is applied to the skin, the difference (T1-T2) between the skin surface temperature T1 after 1 hour and the skin surface temperature T2 after 2 hours is less than 0.10 ° C. The moisturizing fabric according to any one of [1] to [3].
[5] The moisturizing fabric according to any one of [1] to [4], wherein the moisturizing fabric contains 40% by weight or more and 70% by weight or less of regenerated collagen fibers.
[6] The moisturizing fabric further contains 30% by weight or more and 60% by weight or less of one or more fibers selected from the group consisting of polyester fibers, acrylic fibers, and cellulosic fibers [1] to [5] ] The moisturizing fabric according to any one of the above.
[7] The moisturizing fabric according to any one of [1] to [6], wherein the moisturizing fabric has a basis weight of 80 g/m 2 or more and 350 g/m 2 or less.
[8] The moisturizing fabric according to any one of [1] to [7], wherein the moisturizing fabric is a knitted fabric.
[9] An underwear comprising the moisturizing fabric according to any one of [1] to [8].

Claims (9)

  1. 　保湿性布地であって、
    　前記保湿性布地は、再生コラーゲン繊維を含み、
    　前記保湿性布地による２時間肌水分増加率が０．８％以上１．８％以下であり、かつ２時間吸湿量が０．７０ｍｇ／ｃｍ2以上であることを特徴とする、保湿性布地。     A moisturizing fabric,
    The moisturizing fabric contains regenerated collagen fibers,
    A moisturizing fabric characterized by having a 2-hour skin moisture increase rate of 0.8% or more and 1.8% or less and a 2-hour moisture absorption amount of 0.70 mg/cm 2 or more.
  2. 　前記保湿性布地は、曲げ剛性Ｂが０．０１５ｇｆ・ｃｍ2／ｃｍ以上０．１９ｇｆ・ｃｍ2／ｃｍ以下であり、かつ曲げヒステリシス２ＨＢが０．０１５ｇｆ・ｃｍ／ｃｍ以上０．４５ｇｆ・ｃｍ／ｃｍ以下である、請求項１に記載の保湿性布地。 The moisturizing fabric has a flexural rigidity B of 0.015 gf·cm 2 /cm or more and 0.19 gf·cm 2 /cm or less, and a flexural hysteresis 2HB of 0.015 gf·cm/cm or more and 0.45 gf·cm/cm or more. cm or less.
  3. 　前記保湿性布地は、せん断剛性Ｇが０．１５ｇｆ／ｃｍ・ｄｅｇ以上０．４５ｇｆ／ｃｍ・ｄｅｇ以下である、請求項１又は２に記載の保湿性布地。 The moisturizing fabric according to claim 1 or 2, wherein the moisturizing fabric has a shear rigidity G of 0.15 gf/cm·deg or more and 0.45 gf/cm·deg or less.
  4. 　前記保湿性布地は、肌に被覆した場合、１時間後の肌表面の温度Ｔ１と２時間後の肌表面の温度Ｔ２の差（Ｔ１－Ｔ２）が０．１０℃未満である、請求項１～３のいずれかに記載の保湿性布地。 Claim 1, wherein when the moisturizing fabric is applied to the skin, the difference (T1-T2) between the skin surface temperature T1 after 1 hour and the skin surface temperature T2 after 2 hours is less than 0.10°C. 4. The moisturizing fabric according to any one of 1 to 3.
  5. 　前記保湿性布地は、再生コラーゲン繊維を４０重量％以上７０重量％以下含む、請求項１～４のいずれかに記載の保湿性布地。 The moisturizing fabric according to any one of claims 1 to 4, wherein the moisturizing fabric contains 40% by weight or more and 70% by weight or less of regenerated collagen fibers.
  6. 　前記保湿性布地は、さらに、ポリエステル系繊維、アクリル繊維、及びセルロース系繊維からなる群から選ばれる一つ以上の繊維を３０重量％以上６０重量％以下含む、請求項１～５のいずれかに記載の保湿性布地。 6. Any one of claims 1 to 5, wherein the moisture-retaining fabric further contains 30% by weight or more and 60% by weight or less of one or more fibers selected from the group consisting of polyester fibers, acrylic fibers, and cellulosic fibers. Moisturizing fabric as described.
  7. 　前記保湿性布地は、目付が８０ｇ／ｍ2以上３５０ｇ／ｍ2以下である、請求項１～６のいずれかに記載の保湿性布地。 The moisturizing fabric according to any one of claims 1 to 6, wherein the moisturizing fabric has a basis weight of 80 g/m 2 or more and 350 g/m 2 or less.
  8. 　前記保湿性布地は、編物である、請求項１～７のいずれかに記載の保湿性布地。 The moisturizing fabric according to any one of claims 1 to 7, wherein the moisturizing fabric is a knitted fabric.
  9. 　請求項１～８のいずれかに記載の保湿性布地を含むことを特徴とする肌着。 An underwear characterized by including the moisturizing fabric according to any one of claims 1 to 8.
PCT/JP2022/016698 2021-04-30 2022-03-31 Humectant cloth and undergarment including same WO2022230609A1 (en)

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CN202280008654.1A CN116710607A (en) 2021-04-30 2022-03-31 Moisture-retaining cloth and underwear comprising same
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06200474A (en) * 1992-12-28 1994-07-19 Kanegafuchi Chem Ind Co Ltd Method for treating regenerated collagen fiber
CN203187873U (en) * 2013-04-14 2013-09-11 晋江市闽高纺织科技有限公司 Collagen fluffy shell fabric
CN103952823A (en) * 2014-05-14 2014-07-30 安徽泰鸿嘉纺织有限公司 Multi-component mixed worsted yarn
WO2016204280A1 (en) * 2015-06-19 2016-12-22 株式会社カネカ Sheet for beauty care face masks
KR102296605B1 (en) * 2021-04-15 2021-09-01 주식회사 임베스트 Quilt containing collagen fabric
JP2022073917A (en) * 2020-11-02 2022-05-17 株式会社カネカ Fabric and underwear made from regenerated collagen fiber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06200474A (en) * 1992-12-28 1994-07-19 Kanegafuchi Chem Ind Co Ltd Method for treating regenerated collagen fiber
CN203187873U (en) * 2013-04-14 2013-09-11 晋江市闽高纺织科技有限公司 Collagen fluffy shell fabric
CN103952823A (en) * 2014-05-14 2014-07-30 安徽泰鸿嘉纺织有限公司 Multi-component mixed worsted yarn
WO2016204280A1 (en) * 2015-06-19 2016-12-22 株式会社カネカ Sheet for beauty care face masks
JP2022073917A (en) * 2020-11-02 2022-05-17 株式会社カネカ Fabric and underwear made from regenerated collagen fiber
KR102296605B1 (en) * 2021-04-15 2021-09-01 주식회사 임베스트 Quilt containing collagen fabric

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