WO2006008916A1 - アトピー性皮膚炎患者用布帛及び衣類 - Google Patents
アトピー性皮膚炎患者用布帛及び衣類 Download PDFInfo
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- WO2006008916A1 WO2006008916A1 PCT/JP2005/011753 JP2005011753W WO2006008916A1 WO 2006008916 A1 WO2006008916 A1 WO 2006008916A1 JP 2005011753 W JP2005011753 W JP 2005011753W WO 2006008916 A1 WO2006008916 A1 WO 2006008916A1
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- Prior art keywords
- fiber
- evoh
- fabric
- ethylene
- atopic dermatitis
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- 150000002736 metal compounds Chemical class 0.000 description 1
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
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- SXJVFQLYZSNZBT-UHFFFAOYSA-N nonane-1,9-diamine Chemical group NCCCCCCCCCN SXJVFQLYZSNZBT-UHFFFAOYSA-N 0.000 description 1
- JMEJIIOYYMQGSW-UHFFFAOYSA-N nonane-2,2-diamine Chemical compound CCCCCCCC(C)(N)N JMEJIIOYYMQGSW-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
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- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229940100515 sorbitan Drugs 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- 229940035023 sucrose monostearate Drugs 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000003017 thermal stabilizer Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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- 238000004804 winding Methods 0.000 description 1
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Classifications
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- 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
- D03D15/283—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 synthetic polymer-based, e.g. polyamide or polyester fibres
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- D—TEXTILES; PAPER
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- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
- A41B9/00—Undergarments
-
- 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
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- 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
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- 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
- D03D15/208—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 cellulose-based
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- D03D15/40—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 structure of the yarns or threads
- D03D15/44—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 structure of the yarns or threads with specific cross-section or surface shape
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- 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
- D03D15/40—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 structure of the yarns or threads
- D03D15/47—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 structure of the yarns or threads multicomponent, e.g. blended yarns or threads
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- D10B2321/06—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
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- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D10B2401/022—Moisture-responsive characteristics hydrophylic
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- D10B2403/011—Dissimilar front and back faces
- D10B2403/0114—Dissimilar front and back faces with one or more yarns appearing predominantly on one face, e.g. plated or paralleled yarns
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2008—Fabric composed of a fiber or strand which is of specific structural definition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2525—Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
Definitions
- the present invention is suitable for the reduction of itchiness of an affected area of atopic dermatitis patients and the treatment of bruises associated with itchiness, has sufficient physical properties as a force fiber, and has excellent durability and fabric-forming properties.
- the present invention relates to a fabric and clothing made of synthetic fibers.
- chitosan which is a deacetylated product of chitin and chitin, which is a natural polymer substance contained in exoskeletons such as salmon and shrimp. It is.
- Patent Document 1 Japanese Patent Application Laid-Open No. 8-92820
- a conventional viscose rayon wet type is used as a spinning stock solution. It forces 3 ⁇ 4 be prepared fibers by spinning method Hirakifu by " ⁇ Rereru. also, ⁇ , he preparation and application or functional fibers from c rabshell chitin" (Journal of Biotechnology 70 (1999) 373-377) ( non-Patent Document 1 )
- Silk is extremely glossy and flexible Since it has a good fit and is also excellent in moisture absorption and desorption, it can be said that it is an excellent material that does not allow other follow-up as a high-class clothing material.
- silk since silk has biocompatibility, it is widely used as medical materials such as sutures and cosmetic materials.
- the supply of silk is limited and the cost is very high, so it is not possible to fully meet demand.
- silk protein has a drawback that it falls off during use of the fiber or during washing, and it is poor in durability.
- a treatment agent a method in which silk protein is mixed with a binder or paint and the treatment liquid is applied to the surface of a fiber or fabric is also conceivable. In this method, the surface of the silk protein is bonded to a binder or paint. The problem is that the coating resin is covered and the silk protein properties cannot be fully exhibited.
- Patent Document 4 As a method for solving this problem, the method proposed in Japanese Patent Application Laid-Open No. 2003-342835 (Patent Document 4), that is, silk particles are kneaded into a thermoplastic resin having an appropriate melting point, and the kneaded resin is kneaded.
- a sheath component there is a method of using a core-sheath type composite spun fiber, but in this method as well, the intended purpose cannot be achieved because the silk protein is covered with a resin, as in the above method.
- the thermoplastic resin that can be used is extremely limited.
- Patent Document 5 Japanese Unexamined 3 213 535
- this document describes the biocompatibility of fibers, especially the relationship between diseases such as atopic dermatitis and fibers.
- Non-patent document 2 JP-A-8-92820
- Patent Document 2 JP-A-10-212456
- Patent Document 3 Japanese Patent Publication No. 2000-44598
- Patent Document 4 Japanese Unexamined Patent Publication No. 2003-342835
- Patent Document 5 JP-A-3-213535 (claims, page 1, left column, line 17 to right column, line 3, Example)
- Non Patent ⁇ l3 ⁇ 4 rhe preparation and application of functional nbers from crabshell ch itin "(Journal of Biotechnology 70 (1999) 373-377)
- Non-patent document 2 “Examination of the effectiveness of the coefficient of variation of sweat displacement as a biocompatibility evaluation index for various fibers” (Sweatology, 2002 Vol.9 No.2, p57-60)
- an object of the present invention is to provide a fabric, a garment, and a garment that are less irritating to a patient with atopic dermatitis who is highly productive.
- Another object of the present invention is to provide excellent physical properties and fabric-forming properties as fibers, as well as atopy. It is an object of the present invention to provide a cloth and a garment that can reduce or cure skin irritation caused by dermatitis.
- Still another object of the present invention is to provide a fabric and garment in which the effect of reducing or healing atopic dermatitis is hardly reduced even by repeated washing.
- the fiber surface is occupied by an ethylene vinyl alcohol copolymer having an ethylene copolymerization ratio of 25 to 70 mol%.
- the EVOH fiber is made of EVOH fiber and can contact the affected area of atopic dermatitis patients.
- the mole percentage of bulu alcohol units present on the EVOH fiber surface is 20 to 70 mol%.
- EVOH fiber Young's modulus is less than 60cNZdtex, and the single fiber thickness of EVOH fiber is less than 5dtex.
- the “mole ratio of the bull alcohol unit present on the EVOH fiber surface” (hereinafter, simply referred to as “hydroxyl amount on the fiber surface”, “hydroxyl group amount”, or “ ⁇ H group concentration”) may be referred to.
- the amount of hydroxyl groups on the fiber surface means the proportion of butyl alcohol units in which the hydroxyl groups are present in a free state, and is actually measured at a value lower than the theoretical value. It means the value measured by the X-ray photoelectron emission analysis (XPS) method, which is not the theoretical value.
- the amount of hydroxyl group can be measured using, for example, AXIS-HSi manufactured by Shimadzu Corporation.
- core-sheath composite fibers of the polymer and the sheath component particularly, ethylene vinyl alcohol copolymer copolymerization ratio of ethylene is 25 to 70 mole 0/0 as the sheath component, the melting point above 150 ° C crystalline Thermoplastic resin as core component
- ethylene vinyl alcohol copolymer copolymerization ratio of ethylene is 25 to 70 mole 0/0 as the sheath component, the melting point above 150 ° C crystalline Thermoplastic resin as core component
- such a core-sheath type composite fiber has a shape in which the cross-sectional shape of the core part in a direction perpendicular to the length direction has four or more protrusions.
- the ratio of the outer peripheral length (L2) of the core portion to the outer peripheral length (L1) of the composite fiber may satisfy the following formula (1).
- the sheath component is further at a ratio of about 5-45% by mass of at least the terminal amino group with respect to the sheath component. It may contain a partially sealed polyamide resin.
- EVOH fibers may form a multifilament yarn having a total thickness of 40 to 160 dtex, and may be subjected to false twisting and may be further subjected to actual twisting of 500 to 1500 T / m.
- the content of alkali metal ions and alkaline earth metal ions contained in the ethylene-but-alcohol-based copolymer is 10 ppm or less on a mass basis, respectively, and the oil agent contained in the EVOH fiber is a nonionic surfactant. You may be comprised with the agent.
- the portion in contact with the affected area of the wearer may be composed of EVOH fibers.
- the present invention also includes clothing for atopic dermatitis patients formed of the fabric.
- Apparel includes underwear, shirts, sleepwear, socks, gloves and masks. Such clothing is used for patients with atopic dermatitis, and the side in contact with the patient's skin is made of at least EVOH fiber and the side opposite to the side in contact with the patient's skin. Even clothing made of at least cellulosic fibers.
- the present invention also includes a method for reducing or curing skin irritation in an atopic dermatitis patient using the fabric.
- an ethylene-butyalcohol-based copolymer is abbreviated as an A polymer, and in the case of a composite fiber, a partner polymer (particularly a crystalline thermoplastic polymer) to be combined with the A polymer is used. It may be abbreviated as B polymer.
- the present invention since it is composed of specific ethylene butyl alcohol fiber, a fabric with less irritation can be obtained even for patients with atopic dermatitis with high productivity.
- This fabric has excellent physical properties as a fiber and fabric-forming properties, and can reduce or cure skin irritation caused by atopic dermatitis. Even if this fabric is repeatedly washed, the alleviation or healing effect of the arterial dermatitis is hardly lowered.
- Such a fabric is suitable for clothes such as underwear, shacks, sleeping clothes, socks, gloves and masks. That is, the clothing obtained from the fabric of the present invention is excellent in biocompatibility with the human body and suffers from atopic dermatitis. When worn by a person, it reduces itchiness and bruises with less irritation to the skin, and is excellent in reducing atopic symptoms or healing.
- FIG. 1 is a microscopic cross-sectional photograph (5,000 times) showing an example of a core-sheath composite fiber of the present invention.
- FIG. 2 is a schematic cross-sectional view of another example of the core-sheath conjugate fiber of the present invention.
- FIG. 3 is a schematic cross-sectional view of another example of the core-sheath composite fiber of the present invention.
- FIG. 4 is a schematic cross-sectional view of another example of the core-sheath composite fiber of the present invention.
- the fabric for atopic dermatitis patients according to the present invention is a fabric that can come into contact with an affected area of a patient with atopic dermatitis and is 70 on the fiber surface. /.
- the above is composed of EVOH fibers that are occupied by an ethylene monobutyl alcohol copolymer (A polymer) having an ethylene copolymerization ratio of 25 to 70 mol%.
- the A polymer is a copolymer having a basic skeleton composed of ethylene units and butyl alcohol units, and is a copolymer obtained by saponifying an ethylene acetate butyl copolymer.
- the degree of saponification needs to be a high saponification degree of 95 mol% or more, and the copolymerization ratio of ethylene in the basic skeleton needs to be about 25 to 70 mol% (especially 30 to 65 mol%).
- vinyl alcohol units including copolymerized units in which the OH group of vinyl alcohol is an OR group (R is an organic group due to unsaponification, etc.)] are 30 to 75 mol% (especially 35 to 70 mol). %) Is optimal.
- the copolymerization ratio of the butyl alcohol unit in the A polymer is low, the number of hydroxyl groups is reduced, so that the biocompatibility is lowered, the hydrophobicity is increased, and the familiarity with the skin is deteriorated. Les. However, if the copolymerization ratio of the butyl alcohol unit becomes too large, as will be described later, the biocompatibility is lowered and the spinnability becomes poor. Many yarns are not preferable. The reason why the biocompatibility deteriorates when the copolymerization ratio of the butyl alcohol unit becomes too large is unknown, but as a matter of fact, for example, a polyvinyl alcohol fiber, that is, a fiber whose butyl alcohol unit is almost 100 mono%.
- the ethylene-butyl acetate copolymer further includes (meth) acrylic acid or a derivative thereof.
- (meth) acrylic acid or a salt thereof (meth) acrylic acid C alkyl ester such as methyl (meth) acrylate, etc.], (meth) acrylamide or a derivative thereof, unsaturated carboxylic acid
- the obtained A polymer inevitably contains alkali metal ions and alkaline earth metal ions, but the A polymer that directly touches the human skin is as pure as possible. It is preferable to minimize skin irritation caused by impurities. That is, the contents of alkali metal ions and alkaline earth metal ions in the polymer A are each lOOppm or less (for example, about 0.01 to about OOppm), preferably 5 Oppm or less (for example, 0 .01 to 50 ppm), more preferably 10 ppm or less (eg, about 0.01 to about! Oppm). If the content of these metal ions is reduced, the spinnability can be improved as well as a reduction in skin irritation.
- the contents of alkali metal ions and alkaline earth metal ions in the polymer A are each lOOppm or less (for example, about 0.01 to about OOppm), preferably 5 Oppm or less (for example, 0 .01 to 50 ppm), more preferably 10 ppm or less (e
- the A polymer is a copolymer of ethylene and vinyl acetate that is saponified with caustic soda.
- 95 mole 0/0 above saponification degree at this time the force is produced by reduction (e.g., 95-99. 99%, especially 96 to 99. About 9%) is preferred.
- the degree of saponification is low, the crystallinity of the polymer is lowered, and not only the fiber properties such as strength are lowered, but also the polymer A is easily softened, troubles occur in the processing process and the obtained fiber properties are also deteriorated. In the case of clothing, this is preferable because it results in stimulating the affected area of atopic dermatitis.
- the fiber may be composed only of the A polymer, and as long as 70% or more of the fiber surface is covered with the ethylene-butyl alcohol copolymer, the A polymer and other components It is made up of
- the ethylene butyl alcohol copolymer which is the A polymer
- the fibers cause sticking or shrinkage.
- a method for solving this problem generally, a method in which an ethylene butyl alcohol copolymer is acetalized or formalized is used.
- the present inventors can surely prevent fiber sticking and shrinkage by adopting such a method, on the other hand, the hydroxyl group on the fiber surface is reduced and the atopic dermatitis healing effect is reduced. I found out.
- the present inventors have studied a method for imparting hot water resistance to the fiber without reducing the number of hydroxyl groups on the fiber surface, and as a result, added a polyamide resin to the ethylene butyl alcohol copolymer (A polymer). It was found that this is preferable.
- the polyamide resin the polyamide resin exemplified in the section of the B polymer can be used, and aliphatic polyamides such as polyamide 6, polyamide 66, polyamide 6Z12, and polyamide 12 are usually used.
- the ability to increase the hot water resistance of the fiber by adding a polyamide resin to the ethylene-butalcohol-based copolymer can be increased simply by adding gel resin during melt spinning. descend.
- a polyamide resin having a terminal amino group blocked it is preferable to use a polyamide resin having a terminal amino group blocked.
- the polyamide resin is preferably one in which most of all terminal groups are amino groups and the amino groups are blocked.
- the method for blocking the amino group is not particularly limited, but it is preferably blocked with a terminal blocking agent capable of forming a cyclic imide bond with the amino group from the viewpoint of improving the hot water resistance more completely.
- cyclic acid anhydrides are preferred, especially aromatic or aliphatic carboxylic anhydrides (e.g., anhydrous It is preferable to use phthalic acid or succinic anhydride. When phthalic anhydride or succinic anhydride is used, phthalimide or succinimide is produced as a cyclic imide bond.
- the polyamide resin When a polyamide resin is mixed with an ethylene vinyl alcohol copolymer and the amount of the polyamide resin added is small, the polyamide resin is present in the form of islands dispersed in the ethylene vinyl alcohol copolymer.
- the force S, the size of one island is 1 nm to 300 nm, preferably 20 to 150 nm, more preferably 30 to OOnm, and the fiber cross section (in the direction perpendicular to the length direction of the fiber)
- the cross-section of the above) has 10 islands / ⁇ 2 or more, preferably 30-500 / ⁇ m 2 , more preferably about 30-300 / ⁇ m 2 in terms of hot water resistance Demonstrate the effect.
- the amount of the polyamide resin blended with the ethylene monobutyl alcohol copolymer is preferably in the range of 5 to 45% by mass with respect to the amount of the ethylene-butyl alcohol copolymer in terms of hot water resistance. More preferably, it is in the range of 10 to 40% by mass (especially 10 to 30% by mass). If the amount added is too small, the effect of improving hot water resistance is low, while if it is too large, a dispersed state that contributes to the fiberizing process cannot be obtained, and in some cases, reversal of the sea-island relationship occurs, and the texture of the resulting fabric is reduced. , Will drop.
- the number and ratio of the polyamide resin islands are the number and ratio of the islands in the sheath in the case of the core-sheath type composite fiber, and the number of islands in all the fibers in the fiber composed only of EVOH fibers. Number and proportion.
- the degree of cross-linking is preferably such that it does not cause sticking in boiling water at 95 to 125 ° C., and a degree of hot water resistance is obtained, and this is greatly affected by the dispersion state of the polyamide resin. That is, it is preferable that the polyamide as a dispersion component is dispersed to some extent in the ethylene butyl alcohol copolymer. More specifically, the island component is preferably dispersed as described above in order to prevent sticking between fibers and excessive shrinkage during steam ironing and washing / drying.
- the number of island components was counted using a transmission electron microscope with a fiber cross section magnified 100000 times to take a photograph.
- the size of the island component is selected from 20 arbitrary islands from the above picture, except for the 2 largest islands and the 2 smallest islands of those 20 islands, each of the remaining 16 islands.
- the diameter of the circle corresponding to the area was calculated, and the average value of these 16 was calculated.
- Other components include, for example, stabilizers (thermal stabilizers, ultraviolet absorbers, light stabilizers, antioxidants, etc.), organic or inorganic fine particles (crosslinked resin particles, mineral particles, metal compounds, or ceramics). Particles), colorants, antistatic agents, flame retardants, plasticizers, lubricants, crystallization rate retarders and the like. These additives may be used alone or in combination of two or more. Can be used together.
- the fiber constituting the cloth such as clothing includes other components such as polyamide and additives, and may be an A polymer and a B polymer other than the A polymer. From the viewpoint of hot water resistance, it is preferable to use a core-sheath type composite fiber having A polymer as a sheath component and B polymer as a core component.
- B polymers include conventional thermoplastic resins such as polyolefin resins (for example, poly C olefin resins such as polyethylene and polypropylene), acrylic resins (
- thermoplastic resins for example, acrylonitrile monosalt-vinyl copolymer and other acrylonitrile-based resins having acrylonitrile units
- vinyl-based resins for example, polyvinyl alcohol and vinyl chloride-based resins
- polyester-based resins for example, aromatic resins
- Polyester resins, aliphatic polyester resins, etc. polyamide resins (eg, aliphatic polyamide resins, alicyclic polyamide resins, aromatic polyamide resins, etc.), cellulose ester resins (eg, cellulose acetate, etc.) ) And the like.
- thermoplastic resins can be used alone or in combination of two or more.
- thermoplastic crystalline polymers having a melting point of 150 ° C or higher in particular, about 170 to 270 ° C from the viewpoint of composite spinnability
- thermoplastic crystalline polymers having a melting point of 150 ° C or higher (in particular, about 170 to 270 ° C from the viewpoint of composite spinnability) are
- thermoplastic crystalline polymers examples include aromatic polyester resins [for example, C-alkylene-based resins such as ethylene terephthalate and butylene terephthalate.
- Polyalkylene acrylate resins mainly composed of carbonate units for example, poly C alkylene acrylates such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.
- carbonate units for example, poly C alkylene acrylates such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.
- aliphatic polyamide resins for example
- polyamide 6, polyamide 66, polyamide 11, polyamide 12, polyamide 610, polyamide 612, and the like) and polyolefin resins for example, polypropylene resins such as polypropylene
- polyolefin resins for example, polypropylene resins such as polypropylene
- aromatic polyester-based resins for example, poly C-vinyl acrylate, such as polyethylene terephthalate and polybutylene terephthalate
- Aliphatic polyamide resins for example, polyamide 6, polyamide 66, etc.
- the B polymer may contain the same additive as the A polymer.
- the EVOH fiber preferably does not substantially contain a substance having high skin irritation.
- a surfactant with less skin irritation as the oil used.
- the components of oil agents have been selected from the viewpoint of fiber production, but they are not necessarily oil agents that are less irritating to the human skin. Some of them are like cationic nyanionic surfactants.
- it contains substances with high skin irritation. Therefore, in the present invention, it is preferable to use a low skin-irritating, nonionic surfactant as an oil agent that has an effect of reducing itchiness in patients with atopic dermatitis.
- Nonionic surfactants include ester-based nonionic surfactants such as polyhydric alcohol fatty acid esters [poly (glycerin), trimethylolpropane, propylene glycol, pentaerythritol, sorbitan, sonorebitol, sucrose, etc. Examples include esters of alcohol and fatty acid]. These nonionic surfactants can be used alone or in combination of two or more.
- Nonionic surfactants glycerin C fatty acid esters such as glycerin monostearate and glycerol trilaurate ester, sucrose C fatty acid esters such as sucrose monostearate, sorbitan monolaurate and sorbitan mono Sorbitan c fatty acid esters such as oleate are preferred.
- Such Nonio emission type surface active agent is usually attached to the surface of the fibers, the ratio, for example, with respect to fibers, 0.5 1-1. 5 wt 0/0, preferably 0. 2-1 . 2 mass 0/0, more preferably about 0.1 3 :! wt%.
- EVOH-based fibers need to have 70% or more of the fiber surface covered with A-polymer, not only when it is made of A-polymer alone but also with composite fibers, in terms of biocompatibility. It is.
- the coverage of the fiber surface with the A polymer is preferably 80% or more (for example, 80 to: 100%), more preferably 90% or more (for example, 90 to: 100%).
- 100% of the fiber surface is usually covered with A polymer.
- the molar ratio of vinyl alcohol units present in EVOH-based fiber surface is 20 to 70 Monore 0/0, preferably from 21 to 50 mole 0/0, more preferably 22 ⁇ It is about 45 mol% (especially 25-40 mol%).
- the OH group concentration on the fiber surface affects the biocompatibility with the human body (that is, itching reduction and curability of the affected area of atopic dermatitis). The method for evaluating the biocompatibility to the human body will be described later. However, even if the H group concentration exceeds 70 mol% or less than 20 mol%, the biocompatibility is not sufficient. When it is within the range, suitable biocompatibility appears. The reason why the above range provides excellent biocompatibility is not clear at the present time, but it is presumed to be due to the special molecular structure of the ethylene-butyl alcohol copolymer used in the present invention.
- the reason why the above range provides excellent biocompatibility is not clear at the present time, but it is presumed
- the human skin is based on a balance between appropriate hydrophilicity and hydrophobicity, and the presence of water molecules having a certain binding force is considered to be important, but it is used in the present invention.
- hydrophobic unit ethylene and hydrophilic unit bural alcohol form a random copolymer.
- specific hydrophilicity and hydrophobicity are obtained.
- By forming a microphase-separated structure it becomes a structure that exhibits affinity and hydrophobicity to water similar to the surface layer of the human skin, and as a result, it is presumed to be a fiber that exhibits human compatibility. This is the first time that the present invention has been found to be caused by the OH group concentration on the fiber surface and the predetermined copolymerization component as a synthetic fiber having human compatibility that affects atopic dermatitis.
- the OH group concentration on the fiber surface was measured as follows. Even if the ethylene-butyl alcohol copolymer covers the fiber surface, the H group concentration on the fiber surface does not immediately fall within the range specified in the present invention. That is, when the OH group on the fiber surface is substituted with a group other than the OH group by acetalization or formalization, depending on the degree, the OH group concentration on the fiber surface specified in the present invention is satisfied. Will not. Basically, it is preferable that the OH groups of the A polymer covering the fiber surface remain unreacted on the fiber surface.
- the molar ratio of the bull alcohol unit present on the EVOH fiber surface can be controlled mainly by the copolymerization ratio of ethylene and the degree of cross-linking by acetal oil.
- the measurement of the OH group concentration on the fiber surface was performed using AXIS-HSi manufactured by Shimadzu Corporation. Measurement conditions, the linear excitation condition 151 ⁇ -15111 eight, a pressure 1 X 10- 7 Pa. Hydroxyl group measurement The fiber was chemically labeled with trifluoroacetic acid and calculated from the spectral change before and after labeling.
- the biocompatibility evaluation method for the human body was performed by monitor evaluation after having an atopic dermatitis patient actually wear the underwear.
- the method of monitor evaluation is to have patients with atopic dermatitis wear the clothes (T-shirt) of the present invention during the daytime and the pajamas of the present invention at bedtime for four consecutive weeks each in summer and winter.
- the evaluation was carried out. Every day, the wear tester performs a VAS evaluation of the degree of itchiness (determines the degree of itchiness at the start and evaluates the increase / decrease on a 10-point basis), and evaluates the degree of scarring in four stages by the attending physician did .
- VAS evaluation of the degree of itchiness determines the degree of itchiness at the start and evaluates the increase / decrease on a 10-point basis
- the garment of the present invention is the first. Details of the monitor test will be described in the examples described later.
- the thickness of the fibers constituting the garment is also important. If the thickness of the fiber is too large, the irritation to the affected area of atopic dermatitis is increased in the cloth such as garments.
- EVOH fibers have a thickness of 5 dtex or less (for example, about 0.:! To 5 dtex). If the thickness exceeds 5 dtex, irritation to the affected area of atopic dermatitis becomes strong, and the cloth for atopic patients Cannot be used for.
- the fiber thickness is preferably 4.5 dtex or less (for example, 0.2 to 4.5 dtex), more preferably 4 dtex or less (for example, 0.2 to 4 dtex), and particularly about 0.5 to 4 dtex.
- the Young's modulus of the fiber is an important requirement for the fiber.
- the Young's modulus of EVO H fiber is 60 cN / dtex or less (for example, 3 to 60 cN / dtex). If it exceeds 60 cN Zdtex, the fiber becomes rigid and results in irritation of the affected area of atopic dermatitis.
- the Young's modulus of the fiber is preferably 55 cN / dtex or less (for example, 5 to 55 cN / dtex), more preferably about 10 to 55 cN / dtex.
- the Young's modulus may be adjusted by using a resin having a low Young's modulus as the B polymer constituting the fiber or by reducing the draw ratio.
- the EV0H fiber having such characteristics is preferably the above-described core-sheath type composite fiber (fiber having A polymer as a sheath component and B polymer as a core component) from the viewpoint of durability and the like.
- the core-sheath composite fiber will be described in detail.
- the cross-sectional shape of the core portion in the direction perpendicular to the fiber length direction is preferably a shape having four or more protrusions.
- a cross-sectional photograph of an example of such a core-sheath type composite fiber is shown in FIG. As shown in Fig.
- the fiber cross section is composed of a sheath part made of A polymer and a core part surrounded by the sheath part and made of B polymer. It has 30 protrusions (tongue-like or leaf-like protrusions) extending in the radial direction.
- the core portion has a protruding portion, so that there is little peeling between the core portion and the sheath portion, which in turn stimulates the atopic dermatitis affected portion where the core portion peels off and is not exposed on the surface.
- the shape of the core portion may be a shape in which a plurality of protrusions extend in a radial direction from an appropriate position of the core portion (for example, a portion deviated from the shaft core portion, particularly the shaft core portion or the central portion). It may have a shape in which protrusions extend regularly at regular intervals or irregularly at regular intervals in the circumferential direction from an appropriate position of the core portion (such as the axial core portion or the central portion).
- the core portion usually has a plurality of protrusions (or extending portions) extending in the radial direction from the shaft core portion.
- the cross-sectional shape of the protrusion may be a square shape such as a square shape or a rectangular shape, an irregular shape such as an elliptical shape, or a branched shape, and the aspect ratio (width (short side)) of the protrusion.
- the protrusion having such an aspect ratio can improve the adhesion between the core and the sheath. Note that the individual protrusions do not need to have the same size and shape. That is, the length of each extension may be the same or different.
- the number of protrusions is not particularly limited as long as it is 4 or more, but is preferably 7 or more (for example, 7 to: 100), more preferably 10 or more (for example, 10 to 80). More preferably, the number is 20 or more (for example, 20 to 60). When the number of protrusions is reduced, peeling between the core and the sheath tends to occur. There is no particular limitation on the upper limit of the number of protrusions, but 100 is the limit for industrial production due to the complexity of the spinneret. [0056] Furthermore, it is preferable that the ratio of the outer peripheral length (L2) of the core portion and the outer peripheral length (LI) of the composite fiber satisfies the following formula (1).
- Ratio of the outer peripheral length (L2) of the core and the outer peripheral length (L1) of the composite fiber X is the composite ratio of the core It is preferable that the force X / C value changed by 1.6 or more (for example, 1.6 to 30), more preferably 2 or more (for example, 2 to 25), and more preferably 2.5 or more. (For example, 2.5 to 20). If the X / C value is too small, the adhesion between the core and the sheath will be reduced. On the other hand, composite fibers with X / C values exceeding 30 are difficult to produce industrially stably.
- the ratio (L2 / L1) of the outer peripheral length (L2) of the core portion to the outer peripheral length (L1) of the composite fiber is 0.8 or more (for example, 0.8 to 15) is preferable, 1.2 or more (for example, 1.2 to 12) is more preferable, and 1.25 or more (for example, 1.25 to 10) is more preferable. If the L2 / L1 ratio is too small, the adhesion between the core and the sheath will decrease. On the other hand, it is difficult to produce industrially stable composite fibers with complex interfaces where the L2 / L1 ratio exceeds 15.
- the interval between adjacent protrusions is 2 x m or less (for example, about 0.1 to 2 x m, particularly about 0.5 to 2 z m).
- the interval between the protrusions contacting P means the average thickness of the sheath component sandwiched between the adjacent protrusions.
- the polymer A covers 70% or more (for example, about 70 to 100 /.) Of the composite fiber surface, and more preferably 80% or more (for example, about 80 to about 100%). ), More preferably 90% or more (for example, 90 to about 100%) may be covered with A polymer.
- the cross-sectional shape of the entire fiber including the sheath part is not particularly limited, and in addition to the round cross-section as shown in Fig. 1, an irregular cross-section, for example, a polygonal cross-section such as three to eight corners, a flat shape, or It may be an elliptical cross section, a T-shaped cross section, a Y-shaped cross section, a C-shaped cross section, or the like.
- FIG. 2 is schematic cross-sectional views of other examples of the core-sheath type conjugate fiber of the present invention.
- the fiber shown in FIG. 2 includes a sheath portion 1 having a circular cross section and a core portion 2 surrounded by the sheath portion 1, and the core portion 2 has regular or irregular intervals in the circumferential direction.
- Leaf-like protrusions 3 extend, and each protrusion 3 extends 14 from the center of the core 2 in a non-regular (or non-radiating direction) in the radial direction.
- the fiber of FIG. 3 is a fiber similar to the fiber of FIG. 2 except that the cross section has a triangular shape and the number of protruding portions 3 in the core portion 2 is eleven.
- the fiber in Fig. 4 is formed by coaxially forming a sheath 1 having a circular cross section and a core 2 having a circular cross section surrounded by the sheath 1, compared to the fibers in Figs. 2 and 3. Since the protrusion does not exist, the core 1 and the sheath 2 are easily peeled off.
- the composite ratio of the sheath component and the core component can be selected from the range of, for example, 90:10 to 10:90, preferably 80:20 to 20:80, more preferably 70:30 to 30: About 70. If the ratio of the sheath component is too small, it cannot be said that it is preferable for atopic dermatitis patients in which it is difficult to completely cover the fiber surface with the sheath component.
- the method for producing such a core-sheath type composite fiber is not particularly limited as long as it is a method capable of obtaining a composite fiber satisfying the requirements specified in the present invention.
- a composite spinning apparatus is used as a preferable method.
- the B polymer is flowed from the flow dividing plate provided with the number of pores corresponding to the number of protrusions of the core, It can be manufactured by introducing the composite flow toward the center of the inlet and discharging it from the nozzle while covering the entire flow of B polymer flowing from the pores of A with polymer A.
- Spinning / stretching methods include low-speed and medium-speed melt spinning and then stretching, high-speed direct spinning and stretching, and spinning and false twisting simultaneously or subsequently after spinning. Any method such as a method can be adopted. By adjusting the spinning and drawing conditions, the fiber thickness can be adjusted to the above-mentioned range.
- EVOH fibers fibers composed of an ethylene monobutyl alcohol copolymer or core-sheath composite fibers having the copolymer as a sheath component
- filament fibers long fibers
- the cut end of the fiber stimulates the affected area of atopic dermatitis and the effect is reduced.
- short fibers are generally used for clothing and the like. That is, by using short fibers, a large number of fiber ends protrude from the yarn surface, and these fiber ends give the clothes bulkiness and warmth.
- the fiber ends are unfavorable because they stimulate the affected area. Therefore, in the present invention, it is preferable to use a long fiber (multifilament yarn) because there is little irritation to the skin.
- the total thickness of the multifilament yarn is preferably in the range of 40 to 160 dtex. If the multifilament yarn is too thin, it is difficult to manufacture a woven or knitted fabric industrially. On the other hand, if the yarn is too thick, the touch becomes worse and the atopic affected area is stimulated. More preferably, for example, in the case of a knitted fabric, the range is from 60 to:! OOdtex, and in the case of a woven fabric, the range is from 60 to 120 dtex.
- Multifilament yarns are usually multi-filaments of EVOH fibers alone, S, and other fibers (natural fibers, semi-synthetic fibers, synthetic fibers, etc.) as core yarns, and EVOH fibers as side threads around them. May be present.
- the EVOH fiber thus obtained is added to a yarn (preferably a multifilament yarn) and processed into a fabric for atopic dermatitis patients. And as a false twist at the time of processing into a yarn for fabrics (especially clothing), usually a crimp with a false twist number of about 2000 T / m is generally used. In the present invention, 500 to 1500 TZm (preferably 700 to 1450 TZm, more preferably 1000-1400 T / m). As a result, the thread is flattened, creating an effect that gently touches the skin and suppresses skin irritation.
- the number of crimps referred to here is the total number of twists of S direction twist and Z direction twist. . If the number of false twists is too low, It becomes a cloth unfavorable for clothing such as underwear having low elasticity of the ground. Conversely, if the number of false twist crimps is too high, the skin will be hit and the skin irritation will be stronger.
- the air permeability is improved by applying additional twist (that is, actual twist) that is not performed in normal processing. Improves and gives a refreshing feeling and further suppresses skin irritation.
- the multifilament yarn used for knitted and knitted fabrics is a yarn obtained by combining two or three multifilaments to give a real twist to the yarn. Is preferable. If a plurality of yarns are combined, the yarn becomes hard and unfavorable because it causes irritation to the affected area of atopy.
- the number of twists is 500 to 1200 T / m (preferably 550 to 1100 T / m, more preferably
- a cooling effect can be expected in addition to a skin irritation suppressing effect. That is, additionally twisted by the maximum heat transfer amount aerated rate decreases fabric Qmax increases (e.g., increasing from 0. 22j / m 2 to 0. 2 j / m 2), moving the thermal efficiently Can do.
- Qmax increases (e.g., increasing from 0. 22j / m 2 to 0. 2 j / m 2), moving the thermal efficiently Can do.
- Patients suffering from atopic dermatitis have a constitution that tends to increase skin temperature and cause itching due to sweating disorders. Therefore, a fabric with a large Qmax can be expected to have a cooling effect that efficiently removes heat from the skin surface and suppresses the rise in body temperature, and is a preferable material for patients with atopic dermatitis.
- the actual twist number (additional twist number) is too small, the cooling effect is low and the refreshing feeling is lowered. On the other hand, if the actual number of twists is too large, the fabric becomes uneven, and the fabric and the skin are likely to be in point contact, and the point of contact tends to irritate the skin.
- the fabric is a nonwoven fabric or a woven fabric composed of the EVOH-based fibers, and is usually a woven or knitted fabric.
- the woven or knitted fabric include woven fabrics such as plain weave, twill weave, and satin weave, and knitted fabrics such as plain knitting, rubber knitting, pearl knitting, chain knitting, denbi knitting, cord knitting, inlay knitting, and atlas knitting.
- it may be woven or knitted with fibers other than EVOH fibers (synthetic fibers, semi-synthetic fibers, natural fibers, etc.), but from the viewpoint of biocompatibility, the proportion of other fibers is 50%.
- the mass is not more than mass%, preferably not more than 30 mass%, more preferably not more than 10 mass%, and in particular, 100 mass% is usually composed of EVOH-based fibers in the part in contact with the affected area.
- Such a fabric is excellent in biocompatibility with less skin irritation.
- the fabric of the present invention is used for contacting an affected area of a patient with atopic dermatitis. That is, in the fabric of the present invention, it is necessary that EVOH fiber is present in the portion that directly contacts the affected area of atopic dermatitis.
- the fabric of the present invention is used for clothing [for example, underwear or underwear (shirts, pants, bras, shirts, camisole, corset, combination, trousers, slip, petticoat, etc.), swimwear (bikini, one piece, ), Shirts (T-shirts, shirts, sport shirts, polo shirts, trainers, etc.), clothes (trousers, skirts, etc.), sleepwear (pajamas, nightgowns, etc.), socks (socks, stockings, nontee) Stockings, gloves, etc.], medical hygiene materials (eg sanitary products, diapers, disposable diapers, diaper liners, masks, towels, sheets, gauze, bandages, medical gowns, caps, surgical gowns, surgical tapes) Etc.), cosmetic equipment (for example, skin care such as makeup removal, sweat wiping and oil removal) Sheets, puffs, etc.), daily commodities (for example, bedding (pillows, pillow covers, duvets, duvet covers, sheets
- the fabric of the present invention is used as a surface material for contacting at least the affected part. Therefore, the fabric of the present invention is not particularly limited as long as it is a product that comes into direct contact with the human skin just as in the above examples.
- the surface material includes not only a fiber product whose surface is covered with the fabric of the present invention but also a fiber product composed only of the fabric of the present invention.
- underwear there are many applications that come into contact with the skin, for example, underwear, swimwear, shirts, sleepwear, socks, gloves and other cosmetics, makeup removal, sweat wipes, and oil removal sheets.
- Sheets, particularly underwear such as shirts and pants, and cosmetic sheets are preferred.
- all the parts that come into contact with the human body are made of EVOH fibers, and in the case of clothing worn on the underwear, it protrudes from the underwear.
- the part for example, around the neck, the arm part, and the leg part
- the part that is in direct contact with the human skin is made of EVOH fiber.
- the surface and part that come into contact with the skin of the human body are composed of EVOH fibers, and the other surface and part are other fibers (natural fibers, semi-synthetic fibers, synthetic fibers, etc.). It may be configured. Furthermore, contact with skin It is only necessary that all the parts are made of EVOH fiber, and that the part in contact with the affected part suffering from atopic dermatitis is made of EVOH fiber.
- the surface on the side in contact with the skin is formed of at least EVOH-based fibers from the viewpoint of reducing the itching of the atopic patient, and the surface on the opposite side (that is, The surface not contacting the human body) is preferably formed of at least cellulosic fibers. Also, for example, each surface may be covered with EVOH fibers or cellulosic fibers.
- sweat from the human body if sweat from the human body remains on the skin surface for a long time, it will increase itchiness, and if the surface opposite to the surface in contact with the human body is made of cellulosic fibers, sweat will Layer that is composed of EVOH fibers between the cellulose fiber layer part where the sweat is absorbed and taken, and the absorbed sweat is present, and the human body. As a result, it is less likely that the sweated clothing will adhere to the human body, resulting in less irritation to the affected area.
- cellulosic fibers include cotton, hemp, rayon (viscose rayon, bembel grayon), lyocell, and the like.
- the fabric of the present invention is applied to clothing such as underwear, T-shirts, pajamas, nightgowns, socks, pante yeasting, gloves, sanitary products, diaper liners, sanitary materials such as disposable diapers, and application or wiping of cosmetics.
- clothing such as underwear, T-shirts, pajamas, nightgowns, socks, pante yeasting, gloves, sanitary products, diaper liners, sanitary materials such as disposable diapers, and application or wiping of cosmetics.
- Ethylene and butyl acetate are radically polymerized to produce a random copolymer with an ethylene copolymerization ratio of S44 mol%, followed by saponification treatment with caustic soda.
- Ethylene with a saponification degree of 99 mol% or more A saponified butyl acetate copolymer (EVOH) was obtained.
- This polymer is A polymer (forms the sheath), while B polymer (forms the core) is polyethylene terephthalate (PET), and the composite ratio of A polymer and B component is 50:50
- PET polyethylene terephthalate
- the composite ratio of A polymer and B component is 50:50
- spinning Composite filament fiber with melt temperature of 285 ° C and winding speed of 3500mZ, and the cross-sectional shape of each fiber is the shape shown in Fig.
- 83dtexZ24 [24 multifilaments with a total thickness of 83dtex (hereinafter referred to as "83dtexZ24”) It is expressed as “filament”).
- the wet pellets used as the A polymer are washed with a large amount of pure aqueous solution containing acetic acid, and then washed with a large excess of pure water alone to obtain an alkaline solution.
- Metals and alkaline earth metals were washed away and their contents were reduced to 1.2 ppm and 0.8 ppm, respectively.
- sorbitan monolaurate adheres to the surface of the composite fiber as an oil agent.
- the ratio of the outer peripheral length (L1) of this composite fiber to the outer peripheral length (L2) of B polymer (L1 / L2) is 4.0.
- the obtained multifilament yarn was imparted with a false twist of 1300 T / m according to a conventional method, and further provided with an actual twist of 800 T / m using a double twister. Then, a twisting set was performed for 20 minutes at 110 ° C under reduced pressure.
- the pajamas are made of the same fiber on the back side at the time of going to bed, and cotton on the front side.
- Evaluation method Describe the degree of daily itchiness in the patient with the highest score [VAS evaluation, 10 levels] The attending physician evaluates the level of scarring in 4 levels
- the wearing test result is the summer test result. 4. 96 is 3.76 after 2 weeks of wear and 3.35 after 4 weeks of wear, and the score change of the scratch mark is 2.75 before the start to 1.92 after 4 weeks The effect was improved in 8 of 13 patients (improvement rate 62%). On the other hand, in the winter wear test, the average VAS score for 13 people was 4.15 before the start 2.95 after 2 weeks, and 3.00 after 4 weeks. The value of 2.15 before the start dropped to 1.54 after 4 weeks, and 11 out of 13 showed improvement (improvement rate 85%).
- Comparative Example 4 a regular polyester (PET) 84dtexZ36 filament multifilament yarn was obtained by a conventional method, and a knitted fabric was produced in the same manner as in Example 1. Evaluation was performed in the same manner as in Example 1. Carried out.
- Comparative Example 5 a continuous fiber yarn (77 dtex / 24 filament) composed of polyamide 6 was obtained by a conventional method, and a knitted fabric was produced in the same manner as in Example 1, and evaluated in the same manner as in Example 1. Carried out. In the case of Comparative Examples 4 and 5, neither effect of reducing the itch of the patient with atopic dermatitis was found. The results are shown in Table 1.
- Example 2 is an example in which commercially available polyamide 6 was used as the B polymer. That is, long fibers were produced in the same manner as in Example 1 except that polyamide 6 was used as the B polymer, and a T-shirt-like underwear was produced as a knitted fabric and subjected to a wearing test. The results are shown in Table 1. From the results in Table 1, it can be seen that the effect of reducing itchiness is great in patients with atopic dermatitis.
- a 20% polyamide resin synthesized by the production method shown below was melt-kneaded with the same ethylene-butyl alcohol copolymer as in Example 1, and the extruded one was used as A polymer, and commercially available polyamide 6 was used as B polymer.
- a core-sheath type composite fiber (core-sheath ratio 1: 1), in which A polymer is the sheath component and B polymer is the core component, is discharged from the die at a spinning temperature of 285 ° C. Taken in minutes and took out the cans.
- the obtained fiber tow was drawn, crimped and cut by a conventional method to obtain a stable fiber having a single fiber thickness of 1.2 dtex, a fiber length of 38 mm, and a cross-sectional composite shape shown in FIG. Obtained.
- the average size of the islands made of the polyamide resin in the A polymer is an island number of about 70nm was filed at about 50 / zm 2.
- the Young's modulus of the raw cotton was 15 cNZdtex.
- the obtained 70% raw cotton was mixed with 30% cotton to produce 60th spun yarn.
- a 28-gauge smooth knitted fabric was obtained, then dyed under the following conditions, and a T-shirt-like undergarment was produced.
- the same wearing test as in Example 1 was performed. The results are shown in Table 1.
- a 30-liter pressure-resistant reactor was charged with ⁇ -force prolatatam (10 kg) as a polyamide monomer, 1,6-hexanediamine (82 g) and water (lkg) as molecular weight regulators, and heated to 260 ° C with stirring. The pressure was increased to a pressure of 0.5 MPa. Thereafter, the pressure was released to normal pressure and polymerization was carried out at 260 ° C for 3 hours. When the polymerization was completed, the reaction product was extruded into a strand shape, cooled, solidified, and then cut into polyamide 6 resin pellets. The obtained pellets were treated with hot water at 95 ° C. and dried to obtain a polyamide resin. The relative viscosity of this polyamide resin was 2.7 dl / g.
- This polyamide resin was dry blended with phthalic anhydride, reacted and mixed at a temperature of 260 ° C using a twin-screw extruder, discharged into a strand, and cut to obtain a terminal group-modified polyamide.
- the relative viscosity of this polyamide is 2.61 dl / g, and the terminal amino group amount, terminal carboxylic acid group amount, and terminal phthalimide structure amount are 4 microequivalent / g, 20 microequivalent Zg, and 77 microequivalent Zg, respectively.
- the ratio of cyclic phthalimide groups in the total terminal amount was 76%.
- the relative viscosity, terminal amino group amount, terminal carboxylic acid amount, and terminal imide structure amount of the polyamide resin were determined by the following methods.
- the polyamide resin was dissolved in 97% concentrated sulfuric acid to a concentration of 1 g / dl and measured at 25 ° C. using an Ubbelohde viscometer.
- the polyamide resin was dissolved in benzyl alcohol and titrated with 0.05N aqueous potassium hydroxide solution, and the end group concentration per mass of the polyamide resin was shown.
- Polyamide resin was dissolved in deuterated hexafluoroisopropanol, and the peak area of methylene group hydrogen adjacent to the terminal imide structure was determined by 500MHz-NMR manufactured by JEOL Ltd. and converted to the concentration of terminal groups per mass of polyamide resin. did.
- the total amount of terminal amino group, terminal carboxylic acid and terminal imide structure was calculated, and the proportion of terminal imide structure was calculated. “Owf” indicates the ratio (weight ratio) of the drug to the treated fiber.
- Multifix Blue N— FR (Reactive dye) 2% owf
- the bath in which the object to be dyed is immersed in the dye aqueous solution is heated from 50 ° C to 98 ° C over 15 minutes, kept at 98 ° C for 20 minutes, and then lowered to 70 ° C over 10 minutes. And the temperature is kept at the same temperature for 30 minutes, and the dyeing process is terminated by lowering the liquid temperature. Subsequently, the dyed product is taken out, and bisnor RK (manufactured by Ogata Oil & Fat Co., Ltd.
- Example 4 As a polymer, the degree of saponification is 99% and the ethylene copolymerization ratio is changed as shown in Table 1. The same procedure as in Example 1 was conducted except that the saponified ethylene-vinyl acetate was used. The results are shown in Table 1. Examples 4 and 5 were cases where the ethylene copolymerization amount of the A polymer was within the range specified in the present invention, and achieved the object of the present invention.
- a random copolymer having an ethylene copolymerization ratio of 44 mol% was prepared in the same manner as in Example 1, then saponified with caustic soda, pelletized without washing, and an ethylene bullet having a saponification degree of 99% or more.
- An alcohol copolymer was obtained. Impurities in the polymer (total alkali metal content and alkaline earth metal content) were 390 ppm.
- the resulting yarn was used to make a 28-gauge smooth knitted fabric. Further, T-shirts and pajamas were sewn by the same method as in Example 1 using the obtained raw machine knit, and the same evaluation as in Example 1 was performed.
- the fiber was made in the same manner as in Example 1 to obtain a spun drawn yarn of 84 dtex / 24 filament. At that time, polyethylene oxide stearyl sulfate Na salt, stearic acid amidoamine, stearyl betaine and the like which are ionic surfactants were used as oil agents.
- the obtained thread was used to sew a T-shirt and pajamas in the same manner as in Example 1, and the same evaluation as in Example 1 was performed. Although improvement in atopic dermatitis was observed, as in Example 6 above, it was inferior to Examples 1-5.
- the fiber was made in the same manner as in Example 1 to obtain a spun drawn yarn of 84 dtex / 24 filament. This After false twisting of the long fibers at 120 ° C, the cheese-sheathed product was acetalized on the surface OH groups of the ethylene-butalcohol copolymer under the following crosslinking conditions to improve the heat resistance and water resistance. Went. The resulting yarn was used to make a 28 gauge smooth knitted fabric. T-shirts and pajamas were sewn in the same manner as in Example 1 using the resulting raw machine knit, and the same evaluation as in Example 1 was performed. The results are shown in Table 1.
- Nonionic surfactant 0.5g / litnore
- the OH group concentration on the fiber surface was 18.0 mol%.
- the process of improving hot water resistance lowered the OH group concentration on the fiber surface, and the target biocompatibility evaluation result was insufficient.
- Example 1 except that the same ethylene monobutyl alcohol copolymer as in Example 1 was used as the A polymer, and the following semi-aromatic polyamide resin was used as the B polymer and melt-spun at 300 ° C. Fibers were obtained by the same method as in 1, and T-shirts and pajama were produced using the fibers for evaluation.
- terephthalic acid was used as the dicarboxylic acid component.
- the Young's modulus of the obtained fiber was 80 cN / dtex. The results are shown in Table 1. The Young's modulus was large, the skin irritation increased, and the results of wearing evaluation were unsatisfactory.
- Comparative Example 3 The same procedure as in Example 1 was performed except that the fiber thickness of the spun drawn yarn was 84 dtex / l 6 filaments. The results are shown in Table 1. Since this filament was thick with a single fiber thickness of 5.2 dtex, the effect of alleviating itching of atopic dermatitis patients with strong irritation to the skin was hardly obtained.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Medicinal Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
- Knitting Of Fabric (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Socks And Pantyhose (AREA)
- Gloves (AREA)
- Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2006528674A JP4909075B2 (ja) | 2004-07-02 | 2005-06-27 | アトピー性皮膚炎患者用布帛及び衣類 |
US11/571,437 US20080279905A1 (en) | 2004-07-02 | 2005-06-27 | Fabric and Clothes for Atopic Dermatitis Patients |
EP20050753335 EP1764430A1 (en) | 2004-07-02 | 2005-06-27 | Fabric and clothes for atopic dermatitis patients |
Applications Claiming Priority (2)
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JP2004196430 | 2004-07-02 | ||
JP2004-196430 | 2004-07-02 |
Publications (1)
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WO2006008916A1 true WO2006008916A1 (ja) | 2006-01-26 |
Family
ID=35785039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/011753 WO2006008916A1 (ja) | 2004-07-02 | 2005-06-27 | アトピー性皮膚炎患者用布帛及び衣類 |
Country Status (7)
Country | Link |
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US (1) | US20080279905A1 (ja) |
EP (1) | EP1764430A1 (ja) |
JP (1) | JP4909075B2 (ja) |
KR (1) | KR20070045220A (ja) |
CN (1) | CN1981078A (ja) |
TW (1) | TW200613595A (ja) |
WO (1) | WO2006008916A1 (ja) |
Cited By (11)
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JP2007289377A (ja) * | 2006-04-25 | 2007-11-08 | Vainqueur:Kk | 洗顔用パフ |
JP2008308804A (ja) * | 2007-06-18 | 2008-12-25 | Kuraray Trading Kk | 衣料用布帛及びこれを用いた衣類 |
JP2009007691A (ja) * | 2007-06-27 | 2009-01-15 | Gunze Ltd | アトピー性皮膚炎患者用肌着 |
US20090312684A1 (en) * | 2004-11-10 | 2009-12-17 | Precision Fabrics Group, Inc. | Underpad for preventing and reducing skin wounds |
US20100050316A1 (en) * | 2004-11-10 | 2010-03-04 | Precision Fabrics Group, Inc. | Synthetic woven patient gown for preventing and reducing skin wounds |
JP2013116192A (ja) * | 2011-12-02 | 2013-06-13 | Taiki:Kk | 化粧用接触冷感パフ及び容器 |
WO2014115715A1 (ja) | 2013-01-25 | 2014-07-31 | 京都府公立大学法人 | アトピー性皮膚炎抑制用繊維、繊維集合体及び繊維製品、その使用方法並びにアトピー性皮膚炎の抑制方法 |
WO2015046301A1 (ja) * | 2013-09-27 | 2015-04-02 | クラレクラフレックス株式会社 | 保液シート及びフェイスマスク |
WO2015164159A1 (en) * | 2014-04-22 | 2015-10-29 | The Procter & Gamble Company | Filaments and fibrous structures employing same |
JP2016194169A (ja) * | 2015-03-31 | 2016-11-17 | Kbセーレン株式会社 | 芯鞘型複合繊維 |
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US20090308404A1 (en) * | 2004-11-10 | 2009-12-17 | Precision Fabrics Group, Inc. | Fabrics for preventing and reducing skin wounds |
US7816288B2 (en) * | 2004-11-10 | 2010-10-19 | Precision Fabrics Group, Inc. | Fabrics for therapeutic skin care bedding |
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CA2803636C (en) | 2010-07-02 | 2017-05-16 | The Procter & Gamble Company | Detergent product and method for making same |
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EP3624765A1 (en) | 2017-05-16 | 2020-03-25 | The Procter and Gamble Company | Conditioning hair care compositions in the form of dissolvable solid structures |
WO2019163789A1 (ja) * | 2018-02-26 | 2019-08-29 | 株式会社クラレ | 融着用布帛及び該融着用布帛を含む積層体 |
JP7506249B2 (ja) | 2020-07-31 | 2024-06-25 | ザ プロクター アンド ギャンブル カンパニー | ヘアケア用プリル含有水溶性繊維パウチ |
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- 2005-06-27 KR KR1020077002616A patent/KR20070045220A/ko not_active Application Discontinuation
- 2005-06-27 CN CNA2005800226168A patent/CN1981078A/zh active Pending
- 2005-06-27 US US11/571,437 patent/US20080279905A1/en not_active Abandoned
- 2005-06-27 EP EP20050753335 patent/EP1764430A1/en not_active Withdrawn
- 2005-06-27 JP JP2006528674A patent/JP4909075B2/ja not_active Expired - Fee Related
- 2005-06-27 WO PCT/JP2005/011753 patent/WO2006008916A1/ja active Application Filing
- 2005-07-01 TW TW094122262A patent/TW200613595A/zh unknown
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JPH10110380A (ja) * | 1996-10-04 | 1998-04-28 | Asahi Chem Ind Co Ltd | 繊維構造物 |
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Cited By (14)
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US20090312684A1 (en) * | 2004-11-10 | 2009-12-17 | Precision Fabrics Group, Inc. | Underpad for preventing and reducing skin wounds |
US20100050316A1 (en) * | 2004-11-10 | 2010-03-04 | Precision Fabrics Group, Inc. | Synthetic woven patient gown for preventing and reducing skin wounds |
JP2007289377A (ja) * | 2006-04-25 | 2007-11-08 | Vainqueur:Kk | 洗顔用パフ |
JP2008308804A (ja) * | 2007-06-18 | 2008-12-25 | Kuraray Trading Kk | 衣料用布帛及びこれを用いた衣類 |
JP2009007691A (ja) * | 2007-06-27 | 2009-01-15 | Gunze Ltd | アトピー性皮膚炎患者用肌着 |
JP2013116192A (ja) * | 2011-12-02 | 2013-06-13 | Taiki:Kk | 化粧用接触冷感パフ及び容器 |
WO2014115715A1 (ja) | 2013-01-25 | 2014-07-31 | 京都府公立大学法人 | アトピー性皮膚炎抑制用繊維、繊維集合体及び繊維製品、その使用方法並びにアトピー性皮膚炎の抑制方法 |
US9867846B2 (en) | 2013-01-25 | 2018-01-16 | Kyoto Prefectural Public University Corporation | Atopic-dermatitis-suppressing fiber, fiber assembly and fiber product, method for using same, and method for suppressing atopic dermatitis |
RU2658056C2 (ru) * | 2013-01-25 | 2018-06-19 | Киото Прифекчурал Паблик Юниверсити Корпорэйшн | Волокно, подавляющее атопический дерматит, совокупность волокон и изделие из волокон, способ его применения и способ подавления атопического дерматита |
WO2015046301A1 (ja) * | 2013-09-27 | 2015-04-02 | クラレクラフレックス株式会社 | 保液シート及びフェイスマスク |
JPWO2015046301A1 (ja) * | 2013-09-27 | 2017-03-09 | クラレクラフレックス株式会社 | 保液シート及びフェイスマスク |
WO2015164159A1 (en) * | 2014-04-22 | 2015-10-29 | The Procter & Gamble Company | Filaments and fibrous structures employing same |
JP2016194169A (ja) * | 2015-03-31 | 2016-11-17 | Kbセーレン株式会社 | 芯鞘型複合繊維 |
JP2020117826A (ja) * | 2019-01-23 | 2020-08-06 | 株式会社クラレ | 芯鞘複合繊維 |
Also Published As
Publication number | Publication date |
---|---|
EP1764430A1 (en) | 2007-03-21 |
KR20070045220A (ko) | 2007-05-02 |
CN1981078A (zh) | 2007-06-13 |
JPWO2006008916A1 (ja) | 2008-05-01 |
JP4909075B2 (ja) | 2012-04-04 |
US20080279905A1 (en) | 2008-11-13 |
TW200613595A (en) | 2006-05-01 |
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