WO2020203432A1 - 水着 - Google Patents
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- WO2020203432A1 WO2020203432A1 PCT/JP2020/012828 JP2020012828W WO2020203432A1 WO 2020203432 A1 WO2020203432 A1 WO 2020203432A1 JP 2020012828 W JP2020012828 W JP 2020012828W WO 2020203432 A1 WO2020203432 A1 WO 2020203432A1
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- swimsuit
- polyurethane elastic
- mass
- yarn
- polyurethane
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- D—TEXTILES; PAPER
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
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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
- A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D7/00—Bathing gowns; Swim-suits, drawers, or trunks; Beach suits
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- D—TEXTILES; PAPER
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/004—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft with weave pattern being non-standard or providing special effects
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
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- 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
- D03D15/283—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
- 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
- D03D15/40—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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- 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
- D03D15/50—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 properties of the yarns or threads
- D03D15/527—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 properties of the yarns or threads waterproof or water-repellent
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- 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
- D03D15/50—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 properties of the yarns or threads
- D03D15/56—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 properties of the yarns or threads elastic
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D3/00—Woven fabrics characterised by their shape
- D03D3/08—Arched, corrugated, or like fabrics
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- 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
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
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- 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
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
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- 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
- D04B1/22—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 specially adapted for knitting goods of particular configuration
- D04B1/24—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 specially adapted for knitting goods of particular configuration wearing apparel
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/10—Knitted
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/20—Woven
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/50—Synthetic resins or rubbers
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- D—TEXTILES; PAPER
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/38—Polyurethanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- 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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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/021—Moisture-responsive characteristics hydrophobic
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
Definitions
- the present invention relates to a swimsuit containing polyurethane elastic yarn that has high water repellency, is hard to get wet when immersed in water, and maintains a low water retention rate for a long time.
- PFOA perfluorooctanoic acid
- PFOS perfluorooctanesulfonic acid
- a water- and oil-repellent cloth that has been switched to a fluorine-based water repellent having a polyfluoroalkyl group is provided with a PFOA-free fluorine-based water repellent and a cross-linking agent, and is heat-treated (Patent Document 1), PFOA, and / Or a fluorine-based water-repellent compound having a PFOS concentration of less than 5 ng / g is fixed to the surface of the single fiber, and the fluorine-based compound is further fixed in layers to form a two-layer structure (Patent Document 2).
- Etc. have been proposed. However, all of these have lower water repellency than those of fluorine-based water repellents containing PFOA having 8 or more carbon atoms.
- a specific fluoroalkyl alcohol (meth) acrylic acid derivative is partially contained through at least one selected from a sulfone group-containing compound and a polyhydric phenolic compound fixed on the fiber surface.
- a method of fixing a polymer, a melamine resin, and an aqueous dispersion type polyfunctional isocyanate-based cross-linking agent to the fiber surface Patent Document 3
- a low water retention rate can be obtained, but when submerged for a long period of time, the water repellency is lower than that of a fluorine-based water repellent containing PFOA having 8 or more carbon atoms.
- the prior art still has a problem in obtaining a swimsuit having high water repellency, and a swimsuit having higher water repellency, low water retention rate, and high buoyancy has been required.
- the present invention provides a swimsuit having high water repellency, low water retention rate, and high buoyancy in order to solve the above-mentioned conventional problems.
- the swimsuit of the present invention is a swimsuit containing a polyurethane elastic yarn, and the polyurethane elastic yarn contains a cationic high molecular weight compound A having a number average molecular weight of 2000 or more in a range of 0.5 to 10% by mass and is inorganic. It contains the system chlorine deterioration inhibitor B, the mass ratio of the cationic high molecular weight compound A / the inorganic chlorine deterioration inhibitor B satisfies the range of 0.3 to 3, and a silicone oil agent is applied.
- the swimsuit fabric is characterized by being water repellent.
- the present invention can provide a swimsuit having high water repellency, low water retention rate, and high buoyancy by improving the water repellency of the polyurethane elastic yarn itself.
- Such swimsuits have the advantage of being able to swim at high speeds for swimmers and the advantage of being able to swim comfortably for ordinary swimmers.
- FIG. 1 is a woven fabric used for a swimsuit according to an embodiment of the present invention, and is a schematic plan view of a stretch woven fabric in which a plain weave portion and a weft double weave portion are alternately repeated.
- FIG. 2 is a woven fabric used for a swimsuit according to another embodiment of the present invention, and is a schematic plan view of a stretch woven fabric in which a plain weave portion and a warp double woven portion are alternately repeated.
- FIG. 3A is a schematic plan view of the stretch fabric, and FIG. 3B is a cross-sectional view of the stretch fabric.
- FIG. 4A is a schematic plan view of the covering yarn used for the stretch fabric, and FIG. 4B is a schematic plan view of the covering yarn of another embodiment.
- FIG. 5 is a schematic front view of a swimsuit using the same stretch fabric.
- FIG. 6 is a schematic back view of a swimsuit using the same stretch fabric.
- FIG. 7A is a schematic front view of a men's swimsuit using the stretch fabric, and
- FIG. 7B is a back view of the same.
- FIG. 8 is a schematic explanatory view showing a method of measuring the buoyancy of a swimsuit using the stretch fabric.
- the polyurethane elastic yarn of the present invention contains a cationic high molecular weight compound A having a number average molecular weight of 2000 or more in the range of 0.5 to 10% by mass, contains an inorganic chlorine deterioration inhibitor B, and has high cationicity.
- the mass ratio of the molecular weight compound A / the inorganic chlorine deterioration inhibitor B satisfies the range of 0.3 to 3, and a silicone-based oil agent is applied.
- any water repellent treatment agent may be used, but in terms of the elemental mass concentration of SEM-EDX on the polyurethane elastic yarn, it is referred to as fluorine (F) / carbon (C) (hereinafter referred to as F / C). It is preferable to use a treatment agent having a ratio of 0.030 or more. When the F / C ratio is 0.030 or more in the element mass concentration of SEM-EDX on the polyurethane elastic fiber, it indicates that the amount of the fluorine-based water repellent adhered is large, and the F / C ratio is 0. If it is less than 03, the amount of the fluorine-based water repellent adhered is small, and there is a tendency that sufficient low wettability cannot be obtained.
- the F / C ratio is more preferably 0.045 or more.
- the water-repellent treatment of the present invention preferably contains a water-repellent agent and a cross-linking agent.
- a cross-linking agent a melamine resin, a water-dispersed polyfunctional isocyanate-based cross-linking agent, or the like is preferably used, and these can be mixed and used.
- the melamine resin include trimethylolpropane and hexamethylolmelamine.
- the aqueous dispersion type polyfunctional isocyanate-based cross-linking agent is not particularly limited as long as it is an organic compound containing two or more isocyanate functional groups in the molecule, and is not particularly limited, and is limited to tolylene diisocyanate, hexamethylene diisocyanate, and diphenylmethane diisocyanate. , Hydrogenated diphenylmethane diisocyanate, triphenyl triisocyanate, xylene diisocyanate, diclohexylmethane diisocyanate and the like. More preferably, a blocking compound (a compound that regenerates an isocyanate group by heating to 70 to 200 ° C.
- the swimsuit of the present invention preferably contains 5 to 70% by mass of polyurethane elastic yarn, more preferably 5 to 60% by mass, and even more preferably 5 to 50% by mass, when the swimsuit is 100% by mass. , Particularly preferably 5 to 40% by mass.
- polyurethane elastic yarn As other fiber yarns, synthetic fiber yarns such as polyester yarn, nylon yarn and polypropylene yarn can be arbitrarily used.
- the water repellency of the swimsuit of the present invention is preferably 4th grade or higher, more preferably 5th grade in the spray test specified in JIS L1092. If the water repellency is 4th grade or higher, it is suitable for swimwear and the like.
- the water retention rate of the swimsuit after 60 minutes is preferably 50% by mass or less, more preferably 40% by mass or less, and further preferably 30% by mass or less of the mass of the swimsuit.
- the polyurethane elastic yarn may be a bare yarn (bare yarn) or may be covered with another synthetic fiber yarn.
- the covering thread may be a single covering thread or a double covering thread.
- the other synthetic fiber yarns are not particularly limited, but are polyester-based synthetic fiber yarns typified by polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, and copolymerized polyester-based fiber yarns containing these as main components, nylon. Synthetic fibers such as polyamide-based synthetic fiber yarns represented by 6 and nylons 6 and 6 and polypropylene fiber yarns can be used.
- polyamide-based or polyester-based fiber yarns are preferable.
- Polyamide fibers are preferable in terms of strength and processability with polyurethane elastic yarns, and the fiber morphology and cross-sectional shape of synthetic fibers are not particularly limited.
- false twisting is performed by a well-known method and rolled. It is preferable to impart shrinkage, but in order to reduce the water retention rate, it is preferable to use straight raw silk in which the gap between the yarns is reduced. Further, it is more preferable to perform surface smoothing by a well-known method to reduce the gap between the threads.
- the swimsuit preferably has a tear strength of 8N or more, more preferably 10N or more, and even more preferably 12N or more, as specified in JIS L1096. As a result, the tear strength of the swimsuit can be maintained high. Further, the swimsuit preferably has a burst strength of 200 kPa or more, more preferably 300 kPa or more, and further preferably 400 kPa or more, as defined in JIS L1096. As a result, the bursting strength of the swimsuit can be maintained high.
- the swimsuit is preferably at least one selected from woven and knitted fabrics.
- first-class athletes use woven swimwear, and most of them are knitted for general use.
- the swimsuit fabric preferably has a buoyancy of 1.70 g or more, more preferably 1.85 g or more, and further preferably 2.00 g or more per 1 g of the fabric.
- the buoyancy per 1 g of swimsuit is preferably 1.45 g or more, more preferably 1.50 g or more. This has the advantage that the swimmer can swim at high speed, and the general swimmer also has the advantage of being able to swim comfortably.
- the buoyancy of swimwear is lower than that of fabric because the sewn area gets wet.
- the polyurethane elastic yarn of the present invention is basically composed of polyurethane or the like, but the polyurethane will be described first.
- the polyurethane used in the present invention may be any one as long as it uses a polymer diol and diisocyanate as starting materials, and is not particularly limited. Further, the synthesis method is not particularly limited. That is, for example, it may be a polyurethane urea composed of a polymer diol, a diisocyanate and a low molecular weight diamine, or it may be a polyurethane urethane composed of a polymer diol, a diisocyanate and a low molecular weight diol.
- a polyurethane urea using a compound having a hydroxyl group and an amino group in the molecule as a chain extender may be used. It is also preferable to use a polyfunctional glycol, isocyanate or the like having trifunctionality or higher as long as the effect of the present invention is not impaired.
- the polymer diol is preferably a polyether diol, a polyester diol, a polycarbonate diol, or the like. Then, it is preferable to use a polyether diol from the viewpoint of imparting flexibility and elongation to the yarn.
- polyether diol examples include polyethylene oxide, polyethylene glycol, a derivative of polyethylene glycol, polypropylene glycol, polytetramethylene ether glycol (hereinafter abbreviated as PTMG), tetrahydrofuran (THF), and a copolymer of 3-methyltetrahydrofuran.
- PTMG polytetramethylene ether glycol
- THF tetrahydrofuran
- polyester diols such as butylene adipate, polycaprolactone diol, and polyester polyol having a side chain disclosed in Japanese Patent Application Laid-Open No. 61-26612 and the like.
- a polycarbonate diol or the like disclosed in Japanese Patent Publication No. 2-289516 is preferably used.
- such a polymer diol may be used alone, or may be used by mixing or copolymerizing two or more kinds.
- the molecular weight of the polymer diol is preferably 1000 or more and 8000 or less, and more preferably 1500 or more and 6000 or less, from the viewpoint of obtaining elongation, strength, heat resistance and the like when made into a thread.
- a polyol having a molecular weight in this range elastic yarn having excellent elongation, strength, elastic resilience, and heat resistance can be easily obtained.
- aromatic diisocyanates such as diphenylmethane diisocyanate (hereinafter abbreviated as MDI), tolylene diisocyanate, 1,4-diisocyanate benzene, xylylene diisocyanate, and 2,6-naphthalenediocyanate are particularly heat resistant and strong. Suitable for synthesizing high-grade polyurethane.
- examples of the alicyclic diisocyanate include methylenebis (cyclohexylisocyanate), isophorone diisocyanate, methylcyclohexane2,4-diisocyanate, methylcyclohexane2,6-diisocyanate, cyclohexane1,4-diisocyanate, hexahydroxylylene diisocyanate, and hexahydrotolylene diisocyanate.
- Isocyanate, octahydro 1,5-naphthalenedi isocyanate and the like are preferable.
- Aliphatic diisocyanates can be effectively used particularly when suppressing yellowing of polyurethane elastic yarns. Then, these diisocyanates may be used alone or in combination of two or more.
- the chain extender used in synthesizing polyurethane it is preferable to use at least one of a low molecular weight diamine and a low molecular weight diol.
- the molecule may have a hydroxyl group and an amino group such as ethanolamine.
- Preferred low molecular weight diamines include, for example, ethylenediamine, 1,2-propanediamine, 1,3-propanediamine, hexamethylenediamine, p-phenylenediamine, p-xylylene diamine, m-xylylene diamine, p, p'.
- -Methylene dianiline 1,3-cyclohexyldiamine, hexahydrometaphenylenediamine, 2-methylpentamethylenediamine, bis (4-aminophenyl) phosphine oxide and the like can be mentioned. It is preferable that one or more of these are used. Ethylenediamine is particularly preferable. By using ethylenediamine, it is possible to easily obtain a thread having excellent elongation, elasticity recovery, and heat resistance. A triamine compound capable of forming a crosslinked structure, such as diethylenetriamine, may be added to these chain extenders to the extent that the effect is not lost.
- Typical low molecular weight diols include ethylene glycol, 1,3 propanediol, 1,4 butanediol, bishydroxyethoxybenzene, bishydroxyethylene terephthalate, and 1-methyl-1,2-ethanediol. is there. It is preferable that one or more of these are used. Particularly preferred are ethylene glycol, 1,3 propanediol and 1,4 butanediol. When these are used, the heat resistance of the diol-extended polyurethane becomes higher, and a yarn having higher strength can be obtained.
- the molecular weight of polyurethane is preferably in the range of 30,000 or more and 150,000 or less as a number average molecular weight from the viewpoint of obtaining fibers having high durability and strength.
- the molecular weight is measured by GPC and converted by polystyrene.
- terminal blockers are used for polyurethane.
- the terminal sequestering agent include monoamines such as dimethylamine, diisopropylamine, ethylmethylamine, diethylamine, methylpropylamine, isopropylmethylamine, diisopropylamine, butylmethylamine, isobutylmethylamine, isopentylmethylamine, dibutylamine and diamylamine.
- Monools such as ethanol, propanol, butanol, isopropanol, allyl alcohol and cyclopentanol, monoisocyanates such as phenylisocyanate and the like are preferable.
- the polyurethane elastic yarn made of polyurethane having the above basic composition contains a cationic high molecular weight compound A having a number average molecule of 2000 or more in a range of 0.5 to 10% by mass and is an inorganic system.
- a cationic high molecular weight compound A having a number average molecule of 2000 or more in a range of 0.5 to 10% by mass and is an inorganic system.
- the cationic high molecular weight compound used in the present invention is not particularly limited as long as it is a compound having an amino group in its structure, but is from the first grade to the third grade from the viewpoint of chlorine deterioration resistance and yellowing of the polyurethane elastic yarn.
- the secondary amino groups those having only a tertiary amino group in the molecule are particularly preferable.
- the number average molecular weight of the cationic high molecular weight compound is less than 2000, the polyurethane elastic yarn has water repellency due to falling off due to rubbing with a guide or knitting needle during knitting, or flowing out during processing in a bath such as dyeing.
- the number average molecular weight needs to be 2000 or more because it deteriorates.
- the range of the number average molecular weight is preferably in the range of 2000 to 10000. More preferably, it is in the range of 2000 to 4000.
- the water-repellent processability of the polyurethane elastic yarn can be enhanced.
- the cationic high molecular weight compound is contained in an amount of more than 0.5% by mass and 10% by mass or less based on the mass of the fiber. It is more preferable to contain more than 0.5% by mass and 4% by mass or less.
- the polyurethane yarn of the present invention needs to contain an inorganic chlorine deterioration inhibitor together with the above-mentioned cationic high molecular weight compound.
- an inorganic chlorine deterioration inhibitor in the present invention it is preferable to use at least one of an oxide selected from Zn, Mg, Ca and Al, a carbon oxide, a composite oxide and a solid solution. From the viewpoint of pool water resistance and the environment, hydrotalcites composed of the carbon oxides CaCO 3 , MgCO 3 and Mg and Al are particularly preferable.
- the content of the inorganic chlorine deterioration inhibitor in the polyurethane elastic yarn in the present invention is preferably in the range of 0.5% by mass or more and 10% by mass or less from the viewpoint of pool water resistance and stability during production. More preferably, it is 1% by mass or more and 5% by mass or less.
- the mass ratio (A) / (B) of the cationic high molecular weight compound (A) and the inorganic chlorine deterioration inhibitor (B) in the polyurethane elastic yarn. ) Is in the range of 0.3 to 3, and more preferably in the range of 0.5 to 2.
- the inorganic chlorine deterioration inhibitor is blended in the spinning solution and spun, from the viewpoint of spinning stability, it is preferably a fine powder having an average particle size of 2 ⁇ m or less, and a fine powder having an average particle size of 1 ⁇ m or less. It is more preferably a powder.
- the average primary particle size is smaller than 0.01 ⁇ m from the viewpoint of dispersibility, the cohesive force increases and it becomes difficult to uniformly mix the particles in the spinning stock solution. Therefore, those having an average primary particle size of 0.01 ⁇ m or more are used. preferable.
- the average particle size is measured by a laser diffracted light scattering method to measure a 50% particle size. As this measuring instrument, for example, there is a laser diffraction / scattering type particle distribution measuring device LA-950S2 manufactured by HORIBA, Ltd.
- the inorganic chlorine deterioration inhibitor is N, N-dimethylacetamide (hereinafter abbreviated as DMAc), dimethylformamide (hereinafter abbreviated as DMF),
- DMAc dimethylacetamide
- DMF dimethylformamide
- a slurry is prepared by mixing with dimethyl sulfoxide (hereinafter abbreviated as DMSO), N-methylpyrrolidone (hereinafter abbreviated as NMP), a solvent containing these as a main component, and other additives such as a thickener.
- DMSO dimethyl sulfoxide
- NMP N-methylpyrrolidone
- solvent containing these a main component
- other additives such as a thickener.
- an organic substance such as a fatty acid, a fatty acid ester, a phosphoric acid ester, a polyol-based organic substance, or a silane-based cup. It is also preferable to use an inorganic chlorine deterioration inhibitor surface-treated with a ring agent, a titanate-based coupling agent, water glass, a fatty acid metal salt or a mixture thereof.
- the polyurethane elastic yarn of the present invention preferably contains a one-hindered phenol compound from the viewpoint of improving pool water resistance.
- the monohindered phenolic compound is preferably a compound containing at least two monohindered hydroxyphenyl groups and having a skeleton selected from bisester and alkylidene.
- the alkyl group existing at the ring position adjacent to the hydroxyl group in the hydroxyphenyl group is a tertiary butyl group, and it is further desirable that the equivalent of the hydroxyl group is 600 or less.
- Examples of the single hindered phenol compound include ethylene-1,2-bis (3,3-bis [3-t-butyl-4-hydroxy) having a structure in which the hydroxyphenyl group of the single hinder is covalently bonded to the bisester skeleton. Phenyl] butyrate) (chemical formula 1 below) is preferred.
- the one-hindered phenol compound is preferably contained in an amount of 0.15 to 4% by mass with respect to the polyurethane elastic yarn. It is more preferably contained in an amount of 5 to 3.5% by mass.
- silicone in a specific range of 0.5% by mass or more and 20% by mass or less is applied to elastic fibers in the form of, for example, an oil agent.
- this silicone suppresses the tension fluctuation at the time of unwinding of the polyurethane elastic yarn at the time of manufacturing the fabric, and even if it is an elastic fiber with a fine fineness, it tries to suppress the yarn breakage caused by the unwinding tension fluctuation.
- the content of silicone in the treatment agent is preferably 0.5 to 10% by mass, preferably 1 to 6% by mass in terms of dry mass.
- the silicone polydimethylsiloxane composed of dimethylsiloxane units and / or modified polysiloxane are preferable.
- the modified polysiloxane includes silicone oils such as polydialkylsiloxanes composed of dimethylsiloxane units and dialkylsiloxane units containing an alkyl group having 2 to 4 carbon atoms, and polysiloxanes composed of dimethylsiloxane units and methylphenylsiloxane units. It is preferably used.
- the viscosity at 25 ° C. is preferably 5 ⁇ 10 -6 to 50 ⁇ 10 -6 m 2 / s. Such viscosity can be measured by the method specified in JIS-K2283 (crude oil and petroleum products-kinematic viscosity test method and viscosity index calculation method).
- paraffinic hydrocarbons such as mineral oil, antistatic agents, dispersants, and metal soaps.
- Paraffinic hydrocarbons such as mineral oil have a viscosity at 25 ° C of 5 ⁇ 10 -6 to 50 ⁇ 10 -6 m 2 / s from the viewpoint of handleability and reduction of running friction with guides.
- anionic surfactants such as alkyl sulfate, fatty acid soap, alkyl sulfonate, and alkyl phosphoric acid ester are preferably used.
- silicone resin polyether-modified silicone, carbinol-modified silicone, carboxyl-modified silicone, amino-modified silicone, amide-modified silicone, carboxyamide-modified silicone, mercapto-modified silicone, organic carboxylic acid and the like are preferably used alone or as a mixture. Will be done.
- metallic soap magnesium stearate (hereinafter abbreviated as St-Mg) and calcium stearate are preferable, and the average particle size is 0.1 to 1.0 ⁇ m from the viewpoint of improving handleability and dispersibility. Is preferable.
- the silicone oil used in the present invention contains, if necessary, components usually used in synthetic fiber treatment agents such as binders, ultraviolet absorbers, antioxidants, preservatives, and wettability improvers. Is also preferably done.
- the contents of paraffinic hydrocarbons such as these mineral oils, metal soaps, antistatic agents, dispersants and the like are preferably determined as appropriate according to the intended purpose. Further, it is also preferable to add a stabilizer, a thermal conductivity improver, and a pigment within a range that does not impair the effects of the present invention.
- the polyurethane elastic yarn of the present invention may contain various stabilizers, pigments and the like, if necessary.
- various stabilizers, pigments and the like for example, as light-resistant agents and antioxidants, both hindered phenolic agents such as so-called BHT and "Sumilyzer” (registered trademark) GA-80 manufactured by Sumitomo Chemical Industries, Ltd., and "Chinubin” manufactured by Ciba Geigy Co., Ltd.
- Bentriazole-based and benzophenon-based agents such as (registered trademark), phosphorus-based agents such as "Sumilyzer” P-16 manufactured by Sumitomo Chemical Industries, Ltd., various hindered amine-based agents, titanium oxide, inorganic pigments such as carbon black, etc.
- Lubricants such as mineral oils, barium sulfate, cerium oxide, various antistatic agents such as betaine, phosphoric acid compounds, and phosphoric acid ester compounds are added, and they are present by reacting with polymas.
- nitrogen oxide scavengers such as HN-150 manufactured by Nippon Hydrazine Co., Ltd. and "Hostanox" (registered trademark) SE10 manufactured by Clariant Corporation can be used.
- Light such as a thermal oxidation stabilizer, for example, “Sumilyzer” GA-80 manufactured by Sumitomo Chemical Co., Ltd., and a light stabilizer, for example, “Sumisorb” (registered trademark) 300 # 622 manufactured by Sumitomo Chemical Co., Ltd. It is preferable to contain a stabilizer or the like.
- the method for producing polyurethane may be either a melt polymerization method or a solution polymerization method, or may be another method.
- a solution polymerization method is more preferable.
- foreign matter such as gel is less generated in polyurethane, it is easy to spin, and it is easy to obtain polyurethane elastic yarn having low fineness.
- solution polymerization there is an advantage that the operation of making a solution can be omitted.
- Polyurethanes particularly suitable for the present invention include PTMG having a molecular weight of 1500 or more and 6000 or less as a polymer diol, MDI as a diisocyanate, ethylenediamine as a chain extender, 1,2-propanediamine, 1,3-propanediamine, and hexamethylenediamine. Those synthesized using at least one of them can be mentioned. Polyurethane can be obtained, for example, by synthesizing it in DMAc, DMF, DMSO, NMP or the like or a solvent containing these as main components using the above raw materials.
- a so-called one-shot method in which each raw material is put into such a solvent, dissolved, heated to an appropriate temperature and reacted to obtain polyurethane, or a polymer diol and diisocyanate are first melt-reacted and then reacted.
- a method of dissolving a substance in a solvent and reacting it with the above-mentioned chain extender to obtain polyurethane can be adopted as a particularly preferable method.
- the melting point of the polyurethane on the high temperature side is preferable to adjust the melting point of the polyurethane on the high temperature side to a range of 200 ° C. or higher and 260 ° C. or lower from the viewpoint of obtaining a diol having excellent heat resistance.
- Representative methods can be achieved by controlling the types and ratios of polymer diols, MDIs, diols.
- MDIs polymer diols
- polyurethane having a high melting point at high temperature By reducing the amount of polyurethane, polyurethane having a high melting point at high temperature can be obtained.
- amine-based catalysts include N, N-dimethylcyclohexylamine, N, N-dimethylbenzylamine, triethylamine, N-methylmorpholin, N-ethylmorpholin, N, N, N', N'-tetramethylethylenediamine, and the like.
- the concentration of polyurethane in the polyurethane solution thus obtained is usually preferably in the range of 30% by mass or more and 80% by mass or less.
- a cationic high molecular weight compound having a number average molecular weight of 2000 or more and an inorganic chlorine deterioration inhibitor are added to the polyurethane solution. And are included.
- a method of incorporating the cationic high molecular weight compound in the spinning stock solution it may be mixed alone with the spinning stock solution, or it may be mixed in advance with an inorganic chlorine deterioration inhibitor.
- the above-mentioned cationic high molecular weight compound and the inorganic chlorine are added to the polyurethane spinning stock solution using N, N-dimethylformamide, N, N-dimethylacetamide, etc. as a solvent. It is preferable to add a deterioration inhibitor and stir and mix the mixture so as to disperse evenly.
- the cationic high molecular weight compound and the inorganic chlorine deterioration inhibitor are previously dissolved or dispersed in a solvent such as N, N-dimethylformamide, N, N-dimethylacetamide, and the solution and dispersion are made by polyurethane spinning.
- the solvent of the cationic high molecular weight compound and the inorganic chlorine deterioration inhibitor to be added it is preferable to use the same solvent as the polyurethane solution from the viewpoint of uniform addition to the polyurethane solution.
- the cationic high molecular weight compound and the inorganic chlorine deterioration inhibitor, the above-mentioned chemicals such as light-resistant agent and antioxidant, and pigments may be added at the same time.
- any method can be adopted as a method of adding the cationic high molecular weight compound and the inorganic chlorine deterioration inhibitor to the polyurethane solution.
- various means such as a static mixer method, a stirring method, a homomixer method, and a twin-screw extruder method can be adopted.
- the polyurethane yarn of the present invention can be obtained by, for example, dry spinning, wet spinning, or melt spinning and winding the undiluted spinning solution constructed as described above. Of these, dry spinning is preferable from the viewpoint of stable spinning at all finenesses from thin to thick.
- the fineness, cross-sectional shape, etc. of the polyurethane elastic yarn of the present invention are not particularly limited.
- the cross-sectional shape of the thread may be circular or flat.
- the dry spinning method is also not particularly limited, and spinning may be performed by appropriately selecting spinning conditions and the like suitable for the desired characteristics and spinning equipment.
- the spinning speed is preferably 250 m / min or more from the viewpoint of improving the strength of the obtained polyurethane elastic yarn.
- the knitting containing the polyurethane elastic yarn may be any of circular knitting, weft knitting, and warp knitting (including tricot knitting and Russell knitting), and the structure is pile knitting, flat knitting, tenjiku knitting, rib knitting, and smooth knitting (double-sided knitting). ), Rubber knitting, pearl knitting, denby knitting, double denber knitting, cord knitting, half knitting, reverse half knitting, atlas knitting, double atlas knitting, chain knitting, insert knitting, and knitting that combines these, etc. Good.
- the woven fabric consisting of polyurethane elastic yarn and other fibers is woven by a usual method.
- As the woven fabric structure plain weave, twill weave, satin weave, change plain weave, change twill weave, change satin weave, change weave, crest weave, single layer weave, double structure, multiple structure, warp pile weave, weft pile weave, Includes entwined weaves or woven fabrics that combine these. Either one-way stretch using polyurethane yarn only for warp or weft, or two-way stretch using both warp and weft may be used.
- the fabric made of polyurethane elastic yarn and other fibers is smelted, relaxed and set under normal conditions.
- Dyeing of fabrics is usually carried out under dyes and conditions suitable for other fibers having a high mixing ratio with the fabric.
- a disperse dye, an acid dye, a gold-containing dye, or a known dye can be used, and if necessary, a fixing treatment, an antibacterial treatment, a softening treatment, or the like for fixing the dye may be performed.
- the water-repellent treatment method of the present invention is preferably applied by dry heat treatment.
- the dry heat treatment include a method in which a treatment liquid containing a water repellent is applied to a swimsuit using a device such as a mangle, and then dried and heat treated.
- a device for applying the treatment liquid containing a water repellent to the swimsuit a device capable of uniformly applying the liquid to the swimsuit is preferable, and a normal mangle is preferably used as the liquid applying device.
- It can also be applied by a foam processing machine, a printing method, an inkjet method, a spray method, a coating method, or the like.
- the drying temperature is preferably 80 ° C.
- the treatment time is preferably 15 seconds to 5 minutes, more preferably 30 seconds to 3 minutes at 100 to 140 ° C.
- the heat treatment temperature after drying is preferably 80 to 200 ° C.
- the treatment time is preferably 15 seconds to 8 minutes, more preferably 30 seconds to 5 minutes at 130 to 190 ° C. When the treatment temperature is low, the reaction is not sufficient and the water repellency is lowered.
- FIG. 1 is a schematic plan view of a stretch woven fabric 1 in which a plain weave portion 2 and a weft double weave portion 3 of one embodiment of the present invention are alternately repeated.
- the plain weave portion 2 the warp threads 4 and the weft threads 5 intersect to form a woven fabric.
- the weft double weave portion 3 the warp 4 and the weft 6a, 6b intersect to form a woven fabric, and the weft 6a is arranged in the front and the weft 6b is arranged in the back, so that the weave portion 3 is compared with the plain weave portion 2.
- the thickness of the weft double weave portion 3 becomes large.
- the stretchability is improved and it becomes easy to wear.
- the plain weave portion 2 is a concave portion and the weft double weave portion 3 is a convex portion, the uneven portions are arranged in one direction as a whole to form a striped shape. Therefore, for example, in the case of a swimsuit, if the striped shape is used at a position along the height direction of the body, the surface frictional resistance with the water flow can be lowered.
- FIG. 2 is a schematic plan view of a stretch woven fabric 7 in which a plain weave portion 8 and a warp double weave portion 9 of another embodiment of the present invention are alternately repeated.
- the warp threads 10 and the weft threads 11 intersect to form a woven fabric.
- the warp double weave portion 9 the warp threads 12a and 12b and the weft threads 11 intersect to form a woven fabric, and the warp threads 12a are arranged in the foreground and the warp threads 12b are arranged in the back, so that the warp threads 12b are arranged in the back, as compared with the plain weave portion 8.
- the thickness of the warp double weave portion 9 increases.
- FIG. 3A is a schematic plan view of the stretch woven fabric 1 according to the embodiment of the present invention
- FIG. 3B is a sectional view thereof.
- the plain weave portion 2 is a concave portion
- the weft double woven portion 3 is a convex portion.
- the uneven portions are arranged in one direction and form a stripe shape.
- FIG. 4 is a schematic plan view of the single covering yarn 13 used for the stretch woven fabric.
- the core yarn 14 is made of an elastic yarn such as polyurethane
- one coating yarn 15 is made of a processed yarn such as nylon.
- FIG. 4B is a schematic plan view of the double covering yarn 16 of another embodiment, in which the core yarn 17 is an elastic yarn such as polyurethane, and the coating yarn (upper yarn) 19 and the coating yarn (lower yarn) 18 are nylon or the like. It is composed of processed threads.
- FIG. 5 is a schematic front view of the swimsuit 20 for swimming using the stretch fabric
- FIG. 6 is a back view of the same.
- the striped portion 21 from the abdomen to the upper part of the front surface of the swimming race swimsuit 20 is a woven fabric in which the plain weave portion and the double weave portion shown in FIGS. 1 and 3 are alternately repeated.
- the plain portion 22 of the belt portion from the front thigh to the side of the waist and from the shoulder to the back of the swimsuit 20 is a plain woven fabric.
- the striped portion 21 and the plain portion 22 are sewn.
- the back surface of the swimsuit 20 is entirely a striped portion 21 (a woven fabric in which a plain weave portion and a double weave portion are alternately repeated).
- the striped portion 21 is preferably arranged in the height direction of the human body.
- FIG. 7 is a schematic front view of a men's swimsuit 23 using the same stretch fabric.
- the striped portion 24 is a woven fabric in which a plain weave portion and a double weave portion are alternately repeated.
- the plain portion 25 is a plain weave woven fabric.
- the striped portion 24 is preferably arranged in the height direction of the human body.
- a swimsuit with a pattern that is about 20% to 40% smaller than the human body. When created in this way, it can be worn perfectly on the human body.
- Water retention rate (%) ((weight after treatment-weight before treatment) / weight before treatment) x 100 ⁇ Buoyancy test> First, the weight (W1) of the sample was measured in the air. Next, the weight (W2) in water was measured using the buoyancy measuring method shown in FIG. In this buoyancy test device 30, water 32 is put in a container 31, a sample 38 is put in the container 31, and the test device 33 is fixed on the sample 38. The test device holds a weighing scale between the support 34 and the plate 36, attaches the support rod 35 and the wire mesh 37, puts the wire mesh 37 in water as shown in FIG. 8, and puts the weight of the sample 38 in water (W2). ) was measured. The calculation of buoyancy is calculated by W1-W2.
- the initial load was a load corresponding to gravity applied to a length of 1 m with the width of the test piece.
- the tensile speed was 20 cm / min.
- the elongation rate (%) under a load of 17.7 N (1.8 kg) was measured.
- the elongation rate indicates stretchability.
- the stress (N) at the time of 30% elongation at the time of measuring the elongation rate in the warp and weft directions was measured, converted per 1 cm, and displayed in N / cm.
- the stress at 30% elongation is a criterion for evaluating the compression function.
- a condensate polymer of p-cresol and divinylbenzene (“Metachlor” (registered trademark) 2390 manufactured by DuPont) and as an ultraviolet absorber, 2- [4,6-bis (2,2) 4-Dimethylphenyl) -1,3,5-triazine-2-yl] -5- (octyloxy) phenol (Cytec's "Siasorb” (registered trademark) 1164) in a ratio of 3: 2 (mass ratio).
- the mixture was mixed to prepare a DMAc solution (concentration 35% by mass), which was used as an additive solution (35% by mass).
- a polymer solution (X1) The polyurethane urea solution and the additive solution were mixed at a ratio of 98% by mass and 2% by mass to prepare a polymer solution (X1).
- a cationic high molecular weight compound As the cationic high molecular weight compound, a cationic high molecular weight compound having a number average molecular weight of 2600 was produced by the reaction of t-butyldiethanolamine and methylene-bis- (4-cyclohexylisocyanate). The produced cationic high molecular weight compound was dissolved in DMAc to prepare a solution (A1) having a concentration of 35% by mass.
- a 35 mass% DMAc dispersion was prepared using calcium carbonate Shiraishi A (CaCO 3 , average primary particle size: 1.0 ⁇ m) manufactured by Shiraishi Kogyo Co., Ltd. as a chlorine deterioration inhibitor.
- Shiraishi A CaCO 3 , average primary particle size: 1.0 ⁇ m
- horizontal mill WILLY A Using DYNO-MIL KDL manufactured by BACHOFEN, 85% zirconia beads were filled and uniformly finely dispersed under the condition of a flow rate of 80 g / min to obtain DMAc dispersion liquid B1 (35% by mass) of synthetic carbonate.
- ethylene-1,2-bis (3,3-bis [3-t-butyl-4-hydroxyphenyl] butyrate (“Hostanox” (registered trademark) manufactured by Clariant Corporation) O3) was dissolved in DMAc to prepare a solution (C1) having a concentration of 35% by mass.
- the polymer solutions X1, A1, B1 and C1 were mixed at a ratio of 97% by mass, 1% by mass, 3% by mass and 1% by mass, respectively, to prepare a spinning stock solution Y1.
- a polyurethane elastic yarn (78 decitex) (Z1) was produced by dry spinning the undiluted spinning solution Y1 at a winding speed of 580 m / min, and the yarn was wound while being applied with a silicone oil agent as a treatment agent.
- a silicone oil agent a treatment agent (oil agent) of 96% silicone (polydimethylsiloxane), 3% St-Mg, and 1% dispersant was applied by dry weight at 6%.
- the polyurethane elastic yarn obtained as described above was single-covered with nylon 66 raw silk. Nylon 66 raw silk was 33 decitex and 10 filaments. In this way, thread A was obtained.
- a polyurethane elastic yarn was prepared in the same manner as the yarn A except that the polyurethane elastic yarn was prepared with 55 decitex to obtain a yarn B.
- a polyurethane elastic yarn was prepared in the same manner as in yarn A except that it was prepared with 44 decitex and covered with 33 decitex and 10 filament nylon 66 raw silk to obtain yarn C.
- a polyurethane elastic yarn was prepared in the same manner as in A except that it was prepared with 44 decitex and covered with 22 decitex and 24 filament nylon 66 raw silk to obtain yarn D.
- a yarn E was prepared in the same manner as A except that a polyurethane elastic yarn was prepared with 33 decitex and covered with 22 decitex and 24-filament nylon 66 raw silk.
- (Creation of polyurethane elastic thread F) 78 decitex polyurethane elastic fiber (manufactured by Toray Operontex, type 176E) was covered with 33 decitex, 10 filament nylon 66 raw silk to obtain yarn F.
- Example 1 A stretch fabric 1 in which the plain weave portion 2 and the weft double weave portion 3 shown in FIG. 1 are alternately repeated is woven by using thread A for the warp, thread B for the weft surface thread, and thread C for the weft back thread. ..
- the obtained woven fabric was 66% by mass of nylon and 34% by mass of polyurethane. This fabric was scoured, intermediate set, dyed and dried according to a conventional method.
- the obtained woven fabric was immersed in the following water-repellent formulation, squeezed with a pickup of 50%, and then dried in a pin tenter set at a temperature of 130 ° C. Next, a dry heat treatment was performed for 1 minute in a pin tenter set at a temperature of 170 ° C.
- -FX-ML Fluorine-based water repellent manufactured by Kyoto Silk Chemical Co., Ltd.
- 100 g / L ⁇ Beccamin M-3 Melamine resin manufactured by Dainippon Ink and Chemicals Co., Ltd.
- 3 g / L ⁇ Beccamin ACX catalyst manufactured by Dainippon Ink and Chemicals Co., Ltd.
- 2 g / L -Super Fresh JB7200 water-dispersed polyfunctional isocyanate cross-linking agent manufactured by Kyoto Silk Chemicals Co., Ltd.
- 5 g / L The surface of the woven fabric was smoothed.
- the smoothing process is a process of heating and pressurizing between a pair of rolls, and the roll temperature is 220 ° C., the linear pressure is 5500 kgf, and the roll speed is about 6 to 10 m / min.
- the vertical density of the obtained woven fabric is 186 / 2.54 cm, the horizontal density of the plain weave part: 179 / 2.54 cm, the horizontal density of the weft double weave part: 209 / 2.54 cm, and the mass per unit area.
- a woven fabric having a width of 142 g / m 2 , a plain weave portion 2 having a width of 1.70 mm, and a weft double weave portion 3 having a width of 1.70 mm was produced.
- the elongation rate of this woven fabric was 52.9% in the warp direction, 35.2% in the weft direction, and the stress at the time of 30% elongation was 1.72 N / cm in the warp direction and 2.96 N / cm in the weft direction.
- the obtained processed cloth has high stretchability, good adhesion to the skin of the human body, exhibits high water repellency, and has a low water retention rate and exhibits excellent water repellency.
- Example 2 A plain woven fabric was produced by using yarn D for the warp and yarn E for the weft.
- a woven fabric of 70% nylon and 30% polyurethane is woven and dyed and water-repellent in the same manner as in Example 1, with a vertical density of 205 lines / 2.54 cm, a horizontal density of 200 lines / 2.54 cm, and a mass per unit area.
- a woven fabric of 95 g / m 2 was prepared.
- the obtained processed cloth has high stretchability, good adhesion to the skin of the human body, shows a high degree of water repellency, and has a low water retention rate and shows excellent water repellency.
- Table 1 The results are summarized in Table 1.
- Comparative Example 1 The same as in Example 1, dyeing, water repellent, and surface are used except that a yarn F is used for the warp, a yarn G is used for the weft surface yarn, and a yarn H is used for the weft back yarn, and a woven fabric of 66% nylon and 34% polyurethane is woven. Smoothing was performed to obtain a processed cloth fabric of Comparative Example 1.
- the vertical density of the obtained woven fabric is 184 / 2.54 cm, the horizontal density of the plain weave part: 178 / 2.54 cm, the horizontal density of the weft double weave part: 208 pieces / 2.54 cm, and the mass per unit area.
- a woven fabric having a width of 139 g / m 2 , a plain weave portion 2 having a width of 1.70 mm, and a weft double weave portion 3 having a width of 1.70 mm was produced.
- the obtained processed cloth showed a high degree of water repellency, but the water retention rate was high and was insufficient.
- Table 1 The above results are summarized in Table 1.
- Comparative Example 2 The processed cloth of Comparative Example 2 was dyed and water-repellent in the same manner as in Example 2 except that the warp yarn was yarn I and the weft yarn was yarn J, and a woven fabric of 70% nylon and 30% polyurethane was woven. Obtained a woven fabric. A woven fabric having a vertical density of 215 lines / 2.54 cm, a horizontal density of 210 lines / 2.54 cm, and a mass of 116 g / m 2 per unit area was prepared. The obtained processed cloth showed a high degree of water repellency, but the water retention rate was high and was insufficient. The above results are summarized in Table 1.
- Example 3 The men's swimsuit for swimming shown in FIG. 7 was sewn using the woven fabric of Example 1 and the woven fabric of Example 2.
- the striped portion 24 is a woven fabric in which a plain weave portion and a weft double weave portion are alternately repeated, and the striped portion 24 is arranged in the height direction of the human body.
- the woven fabric of the plain weave structure of Example 2 has a plain portion 25.
- Comparative Example 3 The men's swimsuit for swimming shown in FIG. 7 was sewn using the woven fabric of Comparative Example 1 and the woven fabric of the plain weave structure of Comparative Example 2. The above results are summarized in Table 2.
- the swimsuit containing the polyurethane elastic yarn of the present invention has high water repellency, low water retention rate, and high buoyancy, and is therefore suitable for swimmers and general swimmers.
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Abstract
Description
しかし、かかるフッ素系撥水撥油剤に生活環境、生物に影響を及ぼす可能性のある化合物、例えばパーフルオロオクタン酸(以降PFOA)、パーフルオロオクタンスルホン酸(以降PFOS)等が含まれていることが判明しており、かかる化合物を含まないフッ素系撥水撥油剤を使用した繊維製品が要望されている。
PFOAは、フッ素系撥水剤の製造過程において、微量の不純物として撥水剤中に混入するとされるが、メカニズムについては明確ではない。ポリフルオロアルキル基の炭素数が8以上の場合、何かの影響で分解された場合、PFOAが発生する可能性があるということから、分解してもPFOAが発生しえない炭素数6以下のポリフルオロアルキル基を有するフッ素系撥水剤への切り替えが行われ、PFOA非含有フッ素系撥水剤と架橋剤とを付与し、熱処理した撥水撥油性布帛や(特許文献1)、PFOAおよび/またはPFOSの濃度が5ng/g未満であるフッ素系撥水化合物が単繊維表面に固着しており、更に層状に該フッ素系化合物を固着させるなど、2層構造としたもの(特許文献2)などが提案されている。しかしながら、これらはいずれも炭素数8以上のPFOAを含有するフッ素系撥水剤と比較すると撥水性能が低いものであった。
撥水性能を改善するために、繊維表面に固着したスルホン基含有化合物、多価フェノール系化合物から選ばれた少なくとも1種を介して特定のフルオロアルキルアルコール(メタ)アクリル酸誘導体を一部に含む重合体とメラミン樹脂および水分散型多官能イソシアネート系架橋剤を繊維表面に固着させる方法(特許文献3)などが提案されている。この方法によると低保水率とすることができるが、長時間、浸水した場合には炭素数8以上のPFOAを含有するフッ素系撥水剤と比較すると撥水性能が低いものであった。
本発明は、前記従来の問題を解決するため、高い撥水性、低保水率、高い浮力を有する水着を提供する。
これらメラミン樹脂は、撥水剤の固形分に対し1~40質量%、多官能イソシアネート系架橋剤はかかる撥水剤の固形分に対し、1~10質量%の割合で混合されていることが好ましい。
本発明に使用されるポリウレタンは、ポリマージオールおよびジイソシアネートを出発物質とするものであれば任意のものでよく、特に限定されるものではない。また、その合成法も特に限定されるものではない。すなわち、例えば、ポリマージオールとジイソシアネートと低分子量ジアミンからとなるポリウレタンウレアであってもよく、また、ポリマージオールとジイソシアネートと低分子量ジオールとからなるポリウレタンウレタンであってもよい。また、鎖伸長剤として水酸基とアミノ基を分子内に有する化合物を使用したポリウレタンウレアであってもよい。本発明の効果を妨げない範囲で3官能性以上の多官能性のグライコールやイソシアネート等が使用されることも好ましい。
ポリマージオールはポリエーテル系、ポリエステル系ジオール、ポリカーボネートジオール等が好ましい。そして、特に柔軟性、伸度を糸に付与する観点からポリエーテル系ジオールが使用されることが好ましい。
ポリエーテル系ジオールとしては、例えば、ポリエチレンオキシド、ポリエチレングリコール、ポリエチレングリコールの誘導体、ポリプロピレングリコール、ポリテトラメチレンエーテルグリコール(以下、PTMGと略す)、テトラヒドロフラン(THF)および3-メチルテトラヒドロフランの共重合体である変性PTMG、THFおよび2,3-ジメチルTHFの共重合体である変性PTMG、特許第2615131号公報などに開示される側鎖を両側に有するポリオール、THFとエチレンオキサイドおよび/またはプロピレンオキサイドが不規則に配列したランダム共重合体等が好ましく使用される。これらポリエーテル系ジオールを1種または2種以上混合もしくは共重合して使用してもよい。
また、こうしたポリマージオールは単独で使用してもよいし、2種以上混合もしくは共重合して使用してもよい。
ポリマージオールの分子量は、糸にした際の伸度、強度、耐熱性などを得る観点から、数平均分子量が1000以上8000以下のものが好ましく、1500以上6000以下がより好ましい。この範囲の分子量のポリオールが使用されることにより、伸度、強度、弾性回復力、耐熱性に優れた弾性糸を容易に得ることができる。
好ましい低分子量ジアミンとしては、例えば、エチレンジアミン、1,2-プロパンジアミン、1,3-プロパンジアミン、ヘキサメチレンジアミン、p-フェニレンジアミン、p-キシリレンジアミン、m-キシリレンジアミン、p,p'-メチレンジアニリン、1,3-シクロヘキシルジアミン、ヘキサヒドロメタフェニレンジアミン、2-メチルペンタメチレンジアミン、ビス(4-アミノフェニル)フォスフィンオキサイドなどが挙げられる。これらの中から1種または2種以上が使用されることが好ましい。特に好ましくはエチレンジアミンである。エチレンジアミンを用いることにより伸度および弾性回復性、さらに耐熱性に優れた糸を容易に得ることができる。これらの鎖伸長剤に架橋構造を形成することのできるトリアミン化合物、例えば、ジエチレントリアミン等を効果が失わない程度に加えてもよい。
カチオン性高分子量化合物は数平均分子量が2000未満であると、ポリウレタン弾性糸の編成時に、ガイドや編み針との擦過により脱落や、染色等の浴中での加工時に流出により、撥水加工性が悪化するため数平均分子量が2000以上である必要がある。ポリウレタン紡糸原液への溶解性を鑑みると、数平均分子量の範囲としては2000~10000の範囲のものが好ましい。より好ましくは2000~4000の範囲である。
本発明における無機系塩素劣化防止剤としてはZn、Mg、Ca、Alから選ばれる酸化物、炭酸化物、複合酸化物、固溶体のうち少なくとも一種が使用されることが好ましい。耐プール水性および環境への観点から特に好ましくは炭酸化物のCaCO3、MgCO3および、Mg、Alから構成されるハイドロタルサイト類である。
また、無機系塩素劣化防止剤の糸中への分散性を向上させ、紡糸を安定化させる等の目的で、例えば、脂肪酸、脂肪酸エステル、リン酸エステル、ポリオール系有機物等の有機物、シラン系カップリング剤、チタネート系カップリング剤、水ガラス、脂肪酸金属塩またはこれらの混合物で表面処理された無機系塩素劣化防止剤を用いることも好ましい。
かかる片ヒンダードフェノール化合物としては、例えば、片ヒンダードのヒドロキシフェニル基がビスエステル骨格に共有結合した構造のエチレン-1,2-ビス(3,3-ビス[3-t-ブチル-4-ヒドロキシフェニル]ブチレート)(下記の化学式1)が好ましい。
さらに本発明の効果を損なわない範囲で安定剤、熱伝導性改良剤、顔料を配合することも好ましい。
まず、ポリウレタンの製法は、溶融重合法でも溶液重合法のいずれであってもよく、他の方法であってもよい。しかし、より好ましいのは溶液重合法である。溶液重合法の場合には、ポリウレタンにゲルなどの異物の発生が少なく、紡糸しやすく、低繊度のポリウレタン弾性糸を得やすい。また、当然のことであるが、溶液重合の場合、溶液にする操作が省けるという利点がある。
ポリウレタンは、例えば、DMAc、DMF、DMSO、NMPなどやこれらを主成分とする溶剤の中で、上記の原料を用い合成することにより得られる。例えば、こうした溶剤中に、各原料を投入、溶解させ、適度な温度に加熱し反応させてポリウレタンとする、いわゆるワンショット法、また、ポリマージオールとジイソシアネートを、まず溶融反応させ、しかる後に、反応物を溶剤に溶解し、前述の鎖伸長剤と反応させてポリウレタンとする方法などが、特に好適な方法として採用され得る。
ポリマージオールの分子量が1800以上の場合、高温側の融点を200℃以上にするには、(MDIのモル数)/(ポリマージオールのモル数)=1.5以上の割合で、重合を進めることが好ましい。
アミン系触媒としては、例えば、N,N-ジメチルシクロヘキシルアミン、N,N-ジメチルベンジルアミン、トリエチルアミン、N-メチルモルホリン、N-エチルモルホリン、N,N,N',N'-テトラメチルエチレンジアミン、N,N,N',N'-テトラメチル-1,3-プロパンジアミン、N,N,N',N'-テトラメチルヘキサンジアミン、ビス-2-ジメチルアミノエチルエーテル、N,N,N',N',N'-ペンタメチルジエチレントリアミン、テトラメチルグアニジン、トリエチレンジアミン、N,N'-ジメチルピペラジン、N-メチル-N'-ジメチルアミノエチル-ピペラジン、N-(2-ジメチルアミノエチル)モルホリン、1-メチルイミダゾール、1,2-ジメチルイミダゾール、N,N-ジメチルアミノエタノール、N,N,N'-トリメチルアミノエチルエタノールアミン、N-メチル-N'-(2-ヒドロキシエチル)ピペラジン、2,4,6-トリス(ジメチルアミノメチル)フェノール、N,N-ジメチルアミノヘキサノール、トリエタノールアミン等が挙げられる。
また、有機金属触媒としては、オクタン酸スズ、二ラウリン酸ジブチルスズ、オクタン酸鉛ジブチル等が挙げられる。
本発明のポリウレタン弾性糸の繊度、断面形状などは特に限定されるものではない。例えば、糸の断面形状は円形であってもよく、また扁平であってもよい。
そして、乾式紡糸方式についても特に限定されるものではなく、所望する特性や紡糸設備に見合った紡糸条件等を適宜選択して紡糸すればよい。
また、紡糸速度は、得られるポリウレタン弾性糸の強度を向上させる観点から、250m/分以上であることが好ましい。
図7は同ストレッチ織物を使用した男性用の競泳用水着23の模式的正面図である。ストライプ状部分24は平織部分と二重織部分とが交互に繰り返されている織物である。プレーンな部分25は平織組織の織物である。ストライプ状部分24は人体の身長方向に配置するのが好ましい。
<元素質量濃度>
水着を分解し、表面に現れたポリウレタン弾性糸、または解繊し取り出したポリウレタン弾性繊維を用いて下記の条件でSEM-EDXを測定した。得られた元素質量濃度からF/C比を計算した。測定機器はSEM(Hitachi社製S-3400N)、EDX検出器(Horiba社製EMAX x-act)を用いた。
(測定条件)
加速電圧:5kV
解像度:1024×768
プローブ電流:50mA
ライブタイム:120sec
真空度:30Pa
プロセスタイム:mode:4
WD:10mm
スペクトルレンジ:0-20keV
倍率:2000倍
チャンネル数:2K
<撥水性>
JIS L 1092「繊維製品の防水性試験方法」(1998年)に規定される方法でスプレー法により評価を行い、級判定を行った。
<保水率>
タテ20cm、ヨコ20cmに切った水着の中央に直径11.2cmの円を描き、該円の面積が80%拡大されるように伸張し、撥水度試験(JIS L 1092)に使用する試験片保持枠に取り付け、スプレー試験(JIS L 1092)を行った後、保持枠から取り外し、20℃×53%RHの環境下で風乾する。同水着を10枚準備し、1枚ずつ重量を測定したものを「処理前重量」とした。
洗濯機(JIS C 9606)に30Lの水を入れ(水温;25~29℃)、前記水着10枚を水中に入れ「強条件」で所定の時間(10分、60分、120分)回転させた後、水中から一枚ずつ取り出し、拡布状態で15度程度傾けて10秒間待って、水着についた水滴を落とし、重量を測定したものを「処理後重量」とし、下記式により保水率を測定した。
保水率(%)=((処理後重量-処理前重量)/処理前重量)×100
<浮力試験>
まず、空中において試料の重量(W1)を測定した。次に、図8に示す浮力測定方法を使用して、水中における重量(W2)を測定した。この浮力試験装置30は、容器31内に水32を入れ、この中に試料38を入れ、その上に試験装置33を固定する。試験装置は、支持体34と板36の間に重量計を保持し、支持棒35と金網37を取り付け、図8に示すように金網37を水中に入れて、試料38の水中における重量(W2)を測定した。浮力の計算は、W1-W2で求められる。生地試料の場合は、タテ3cm,ヨコ4cmの試料を5枚測定し、平均値を出した。生地試料については乾燥時の重量を測定した。
<引裂強さ>
JIS L1096「織物及び編物の生地試験方法」(1999年)に規定されるペンジュラム法により評価を行った。
<破裂強さ>
JIS L1096「織物および編物の生地試験方法」(1999年)に規定されるミューレン法により評価を行った。
<伸長率>
JIS L1096「織物および編物の生地試験方法」(1999年)に規定される A法 カットストリップ法に従って測定した。試験片の幅5cm、つかみ間隔20cmとした。初荷重は試験片の幅で1mの長さにかかる重力に相当する荷重とした。引張速度20cm/minとした。17.7N(1.8kg)荷重時の伸長率(%)を測定した。伸長率はストレッチ性を示す。
<30%伸長時の応力>
経糸と緯糸方向の伸長率測定時の30%伸長時の応力(N)を測定し、1cm当りに換算しN/cmで表示した。30%伸長時の応力は、コンプレッション(着圧)機能を評価する基準になる。
数平均分子量1800のPTMGとMDIとをモル比にてMDI/PTMG=1.58/1となるように容器に仕込み、90℃で反応せしめ、得られた反応生成物をN,N-ジメチルアセトアミド(DMAc)に溶解させた。次に、エチレンジアミン及びジエチルアミンを含むDMAc溶液を前記反応物が溶解した溶液に添加して、ポリマ中の固体分が35質量%であるポリウレタンウレア溶液を調製した。
さらに、酸化防止剤として、p-クレゾ-ル及びジビニルベンゼンの縮合重合体(デュポン社製“メタクロール”(登録商標)2390)と紫外線吸収剤として、2-[4,6-ビス(2,4-ジメチルフェニル)-1,3,5-トリアジン-2-イル]-5-(オクチルオキシ)フェノ-ル(サイテック社製“サイアソーブ”(登録商標)1164)を3対2(質量比)で混合し、DMAc溶液(濃度35質量%)を調整し、これを添加剤溶液(35質量%)とした。
ポリウレタンウレア溶液と添加剤溶液とを98質量%、2質量%の割合で混合してポリマ溶液(X1)とした。
カチオン性高分子量化合物として、t-ブチルジエタノールアミンとメチレン-ビス-(4-シクロヘキシルイソシアネ-ト)の反応によって、数平均分子量2600のカチオン性高分子量化合物を生成せしめた。生成したカチオン性高分子量化合物をDMAcに溶解し、濃度35質量%の溶液(A1)を調製した。
塩素劣化防止剤として白石工業(株)製炭酸カルシウム白艶華A(CaCO3、平均一次粒子径:1.0μm)を用いて35質量%DMAc分散液を調整した。その調整には、水平ミルWILLY A.BACHOFEN社製DYNO-MIL KDLを用い、85%ジルコニアビーズを充填、80g/分の流速の条件で均一に微分散させて、合成炭酸塩のDMAc分散液B1(35質量%)とした。
さらに、片ヒンダードフェノール化合物として、エチレン-1,2-ビス(3,3-ビス[3-t-ブチル-4-ヒドロキシフェニル]ブチレート(クラリアントコーポレーション(Clariant Corporation)製“Hostanox”(登録商標)O3)をDMAcに溶解し、濃度35質量%の溶液(C1)を調製した。
ポリマ溶液X1、A1、B1、C1をそれぞれ97質量%、1質量%、3質量%、1質量の比率で混合し紡糸原液Y1を調製した。この紡糸原液Y1を580m/分の巻き取り速度で、乾式紡糸することにより、ポリウレタン弾性糸(78デシテックス)(Z1)を製造し、処理剤であるシリコーン油剤を塗布しつつ巻き取った。なお、シリコーン油剤はシリコーン(ポリジメチルシロキサン)96%、St-Mg3%、分散剤1%の処理剤(油剤)を乾燥重量で6%付与した。
前記のようにして得られたポリウレタン弾性糸をナイロン66生糸でシングルカバーリングした。ナイロン66生糸は33デシテックス、10フィラメントであった。このようにして糸Aを得た。
(ポリウレタン弾性糸Bの作成)
ポリウレタン弾性糸を55デシテックスで作成した以外は糸Aと同様に作成し、糸Bを得た。
(ポリウレタン弾性糸Cの作成)
ポリウレタン弾性糸を44デシテックスで作成し、33デシテックス、10フィラメントのナイロン66生糸でカバーリングした以外は糸Aと同様に作成し、糸Cを得た。
(ポリウレタン弾性糸Dの作成)
ポリウレタン弾性糸を44デシテックスで作成し、22デシテックス、24フィラメントのナイロン66生糸でカバーリングした以外はAと同様に作成し、糸Dを得た。
(ポリウレタン弾性糸Eの作成)
ポリウレタン弾性糸を33デシテックスで作成し、22デシテックス、24フィラメントのナイロン66生糸でカバーリングした以外はAと同様に作成した、糸Eを得た。
(ポリウレタン弾性糸Fの作成)
78デシテックスのポリウレタン弾性繊維(東レ・オペロンテックス社製、タイプ176E)を33デシテックス、10フィラメントのナイロン66生糸でカバーリングを行い、糸Fを得た。
(ポリウレタン弾性糸Gの作成)
55デシテックスのポリウレタン弾性繊維(東レ・オペロンテックス社製、タイプ254E)を33デシテックス、10フィラメントのナイロン66生糸でカバーリングを行い、糸Gを得た。
(ポリウレタン弾性糸Hの作成)
44デシテックスのポリウレタン弾性繊維(東レ・オペロンテックス社製、タイプ254T)を33デシテックス、10フィラメントのナイロン66生糸でカバーリングを行い、糸Hを得た。
(ポリウレタン弾性糸Iの作成)
44デシテックスのポリウレタン弾性繊維(東レ・オペロンテックス社製、タイプ254T)を22デシテックス、24フィラメントのナイロン66生糸でカバーリングを行い、糸Iを得た。
(ポリウレタン弾性糸Jの作成)
33デシテックスのポリウレタン弾性繊維(東レ・オペロンテックス社製、タイプ254E)を22デシテックス、24フィラメントのナイロン66生糸でカバーリングを行い、糸Jを得た。
経糸に糸A、緯表糸に糸B、緯裏糸に糸Cを使用し、 図1に示す平織部分2と緯二重織部分3とが交互に繰り返されているストレッチ織物1を製織した。得られた織物はナイロン66質量%、ポリウレタン34質量%であった。この織物を常法に従い、精練、中間セット、染色、乾燥を行った。得られた織物を、以下の撥水処方に浸漬し、ピックアップ50%で絞った後に130℃の温度に設定したピンテンター中で乾燥を行った。次に、170℃の温度に設定したピンテンター中で1分間乾熱処理を行い、実施例1の加工布織物を得た。得られた加工布は高い撥水度を示すとともに、保水率が低く優れた撥水性を示す織物生地が得られた。
・FX-ML((株)京絹化成 製 フッ素系撥水剤):100g/L
・ベッカミンM-3(大日本インキ化学工業(株)製 メラミン樹脂):3g/L
・ベッカミンACX(大日本インキ化学工業(株)製 触媒):2g/L
・スーパーフレッシュJB7200((株)京絹化成社製 水分散型多官能性イソシアネート架橋剤):5g/L
上記織物表面に平滑加工を施した。平滑加工は一対のロール間で加熱加圧する加工であり、ロール温度220℃、線圧5500kgf、ロール速度6~10m/min程度とした。
得られた織物のタテ密度は、186本/2.54cm、平織り部分のヨコ密度:179本/2.54cm、緯二重織り部分のヨコ密度:209本/2.54cm、単位面積当たりの質量142g/m2、平織部分2の幅1.70mm、緯二重織部分3の幅1.70mmの織物を作製した。
この織物の伸長率は経糸方向52.9%,緯糸方向35.2%、30%伸長時の応力は経糸方向が1.72N/cm、緯糸方向が2.96N/cmであった。得られた加工布は、ストレッチ性が高く、人体の肌への密着性も良く、高い撥水性を示すとともに、保水率が低く優れた撥水性を示す織物が得られた。
経糸に糸Dを、緯糸に糸Eを使用し、平織物を作製した。ナイロン70%、ポリウレタン30%織物を製織し、実施例1と同様に染色加工および撥水加工を施し、タテ密度205本/2.54cm、ヨコ密度200本/2.54cm、単位面積当たりの質量95g/m2の織物を作製した。得られた加工布はストレッチ性が高く、人体の肌への密着性も良く、高い撥水度を示すとともに、保水率が低く優れた撥水性を示す水着生地が得られた。結果は表1にまとめて示す。
経糸に糸Fを、緯表糸に糸G、緯裏糸に糸Hを使用し、ナイロン66%、ポリウレタン34%織物を製織した以外は実施例1と同様に染色加工、撥水加工、表面平滑加工を施し、比較例1の加工布織物を得た。
得られた織物のタテ密度は、184本/2.54cm、平織り部分のヨコ密度:178本/2.54cm、緯二重織り部分のヨコ密度:208本/2.54cm、単位面積当たりの質量139g/m2、平織部分2の幅1.70mm、緯二重織部分3の幅1.70mmの織物を作製した。
得られた加工布は高い撥水度を示したが、保水率が高く、不十分であった。以上の結果を表1にまとめて示す。
経糸に糸Iを、緯表糸に糸Jを使用し、ナイロン70%、ポリウレタン30%織物を製織した以外は実施例2と同様に染色加工、撥水加工を施し、比較例2の加工布織物を得た。
得られた織物のタテ密度は、215本/2.54cm、ヨコ密度:210本/2.54cm、単位面積当たりの質量116g/m2、の織物を作製した。得られた加工布は高い撥水度を示したが、保水率が高く、不十分であった。以上の結果を表1にまとめて示す。
実施例1の織物生地と実施例2の織物生地を用いて図7に示す競泳用男性水着を縫製した。実施例1の織物生地は、ストライプ状部分24は平織部分と緯二重織部分とが交互に繰り返されている織物であり、ストライプ状部分24を人体の身長方向に配置した。実施例2の平織組織の織物生地は、プレーンな部分25となっている。
比較例1の織物生地と、比較例2の平織組織の織物生地を用いて図7に示す競泳用男性水着を縫製した。
以上の結果を表2にまとめて示す。
2,8 平織部分
3 緯二重織部分
4,10,12a,12b 経糸
5,6a,6b,11 緯糸
9 経二重織部分
13 シングルカバーリングヤーン
14,17 芯糸
15,18,19 被覆糸
16 ダブルカバーリングヤーン
20 女性用水着
21,24 ストライプ状部分
22,25 プレーン部分
23 男性用水着
30 浮力試験装置
31 容器
32 水
33 重量計
34 支持体
35 支持棒
36 板
37 金網
38 試料
Claims (12)
- ポリウレタン弾性糸を含む水着であって、
前記ポリウレタン弾性糸は、数平均分子量が2000以上のカチオン性高分子量化合物Aを0.5~10質量%の範囲で含有し、無機系塩素劣化防止剤Bを含有し、前記カチオン性高分子量化合物A/前記無機系塩素劣化防止剤Bの質量比率が0.3~3の範囲を満たし、かつシリコーン系油剤が付与されており、
前記水着生地は撥水加工されていることを特徴とするポリウレタン弾性糸を含む水着。 - 前記水着は、ポリウレタン弾性糸上の走査型電子顕微鏡-エネルギー分散型X線分光法(SEM-EDX)の元素質量濃度において、フッ素(F)/炭素(C)比が0.030以上であるポリウレタン弾性糸を含む請求項1に記載の水着。
- 前記水着は、ポリウレタン弾性糸を5~70質量%含む請求項1または2に記載の水着。
- 前記水着生地の撥水性は、JIS L 1092に規定のスプレー試験で4級以上である請求項1~3のいずれかに記載の水着。
- 前記水着生地は、60分後の保水率が前記水着質量の50質量%以下である請求項1~4のいずれかに記載の水着。
- 前記ポリウレタン弾性糸は、他の合成繊維糸によりカバーリングされている請求項1~5のいずれかに記載の水着。
- 前記水着生地は、ポリアミド系またはポリエステル系繊維糸を含む請求項1~6のいずれかに記載の水着。
- 前記水着生地は、JIS L 1096に規定の引裂強力が8N以上である請求項1~7のいずれかに記載の水着。
- 前記水着生地は、JIS L 1096に規定の破裂強力が200kPa以上である請求項1~8のいずれかに記載の水着。
- 前記水着生地は、織物及び編み物から選ばれる少なくとも一つである請求項1~9のいずれかに記載の水着。
- 前記水着生地は、1g当たりの浮力が1.70g以上である請求項1~10のいずれかに記載の水着。
- 前記水着は、1g当たりの浮力が1.45g以上である請求項1~11のいずれかに記載の水着。
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