WO2010097970A1 - 織物 - Google Patents
織物 Download PDFInfo
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- WO2010097970A1 WO2010097970A1 PCT/JP2009/061415 JP2009061415W WO2010097970A1 WO 2010097970 A1 WO2010097970 A1 WO 2010097970A1 JP 2009061415 W JP2009061415 W JP 2009061415W WO 2010097970 A1 WO2010097970 A1 WO 2010097970A1
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- monofilament
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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
- D03D15/30—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 fibres or filaments
- D03D15/37—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 fibres or filaments with specific cross-section or surface shape
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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
- D03D15/573—Tensile strength
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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
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
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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
- D10B2401/14—Dyeability
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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
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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
- D10B2503/00—Domestic or personal
- D10B2503/06—Bed linen
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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.]
- Y10T442/30—Woven fabric [i.e., woven strand or strip material]
- Y10T442/3065—Including strand which is of specific structural definition
- Y10T442/3089—Cross-sectional configuration of strand material is specified
- Y10T442/3114—Cross-sectional configuration of the strand material is other than circular
- Y10T442/3122—Cross-sectional configuration is multi-lobal
Definitions
- the present invention relates to a lightweight thin fabric having high tear strength and low air permeability after washing, and more particularly, a woven fabric in which the blowout of cotton and down is suppressed, in particular, down wear, down jacket
- the present invention relates to a fabric suitably used on the side of a futon, a sleeping bag or the like.
- Fabrics used in downwear and futon areas are required to have low air permeability in order to suppress blowout of cotton and down. It is also required to be lightweight and thin.
- polyester multifilaments, nylon multifilaments, or composite synthetic fibers of these are also often used in the above-mentioned fabric because of their excellent mechanical properties. Since these fabrics are soft, lightweight, and excellent in wind resistance, water repellency and fastness, they are often used in coats, blousons, golf wear, sports outdoor wear, and the like. However, in order to ensure the down proof property for suppressing the blowout of the down, it is necessary to make the woven fabric into a precise structure, and there is a problem that the woven fabric becomes hard.
- Patent Document 1 discloses a light-weight fabric composed of a base yarn having a fineness of 10 dtex to 30 dtex and a reinforcing yarn having a fineness of 20 dtex to 60 dtex, a cover factor of 1300 to 1700, and a tearing strength of 8 N or more.
- the woven fabric of Patent Document 1 is made of polyamide fibers having a high shrinkage ratio as compared with polyester, there is a problem that the structure is easily moved during washing, and low air permeability can not be maintained after washing.
- Patent Document 2 is composed of a synthetic multifilament having a fineness of 15 dtex to 35 dtex consisting of atypical cross section single yarn of atypical degree 2 to 7, a cover factor of 1500 to 2000, and a tearing strength of 6 to 15 N.
- a futon side fabric is disclosed having a permeability of 0.3 to 1.5 cc / cm 2 / s.
- the durability of the air permeability by washing or the like is not described at all.
- there is a problem that the air permeability is lowered and the down becomes easy to blow out by repeating wearing, compression storage, washing and the like during use for many years.
- the present invention has been made against the background of the problems of the prior art, and more specifically, it is suitably used on side grounds such as down wear, down jackets, futons, sleeping bags, etc., and is light in weight and high in tear strength and It is an object of the present invention to provide a fabric that can maintain low air permeability even after washing.
- the woven fabric according to the present invention is a woven fabric composed of synthetic multifilaments, and the woven fabric is calendered on at least one side so that monofilaments overlap in at least a part of the synthetic multifilaments.
- the monofilament is a cross-section yarn having a degree of heteromorphism before calendering of 2.0 to 6.0, and the synthetic multifilament has a fineness of 7 to 44 dtex, and the cover of the woven fabric It is characterized in that the factor is 1300 to 2200.
- the synthetic multifilament is adjacent by using a synthetic multifilament consisting of monofilaments which are atypical cross section yarn having a heteromorphic degree of 2.0 to 6.0 and subjecting at least one surface of the fabric to calendering.
- the monofilament preferably has a fineness of 0.4 dtex to 2.0 dtex, more preferably has a cross section including a recess, and still more preferably has a Y-shaped cross section or a cruciform cross section. It is a thing. In particular, it is preferable that the protrusions in the Y-shaped cross section or the cross section have the same thickness as that of the base portion or be thicker than the base portion. In addition, it is preferable that the raw material used for the said monofilament is polyamide or polyester.
- the tear strength by the Pendulum method of the woven fabric is 8N to 50N in both the warp direction and the weft direction.
- the air permeability of the woven fabric after washing 10 times is preferably 2.0 cc / cm 2 / s or less.
- the water pressure resistance after 20 times of washing of the fabric preferably has a retention of 70% or more with respect to the initial water pressure resistance.
- the woven fabric is suitably used on any side of down wear, down jacket, futon and sleeping bag.
- the woven fabric of the present invention is a lightweight thin fabric which is high in tear strength and can maintain low air permeability even after washing, and is suitably used in side grounds such as down wear, down jackets, futons and sleeping bags.
- the woven fabric of the present invention is a woven fabric composed of synthetic multifilaments, and the woven fabric is subjected to calendering on at least one side to be compressed in a state where monofilaments overlap in at least a part of the synthetic multifilaments.
- the monofilament is a modified cross-section yarn having a degree of variant before calendering of 2.0 to 6.0, and the fineness of the synthetic multifilament is 7 dtex to 44 dtex, and the cover factor of the woven fabric is It is characterized by being 1300 to 2200.
- the monofilament used in the present invention is a yarn of different cross-section, and the degree of deformation is preferably 2.0 or more, more preferably 2.5 or more, and more preferably 6.0 or less in terms of the value before calendering. It is preferably present, and more preferably 5.0 or less.
- the degree of heteromorphism of the monofilaments is less than 2.0, the monofilaments can not overlap in a state of few voids, and as a result, it is difficult to maintain low air permeability after washing. If the degree of deformation is greater than 6.0, there is a problem that the tear strength of the resulting fabric is reduced, which is not preferable.
- the degree of deformation referred to here is calculated from the major axis (diameter of the longest portion) / short axis (diameter of the shortest portion) of the cross section of the monofilament.
- the cross-sectional shape of the monofilament is not particularly limited as long as it can satisfy the degree of heteromorphism in the above range, but one having a cross section including a recess is preferable, for example, Y-shaped, cross-shaped, W-shaped, V-shaped And ⁇ -shaped cross sections. Among these, a Y-shaped cross-shaped cross-section having a clear asperity is more preferable. Furthermore, the Y-shaped cross-section is particularly preferable because the asperities overlap optimally.
- the resulting fabric is compressed and fixed in a state in which the concavities and convexities are optimally overlapped with each other by calendering described later, and the restraint between the monofilaments is the strongest. But good low air permeability can be maintained. Furthermore, by using a monofilament having a Y-shaped cross-section, the produced fabric is particularly preferable because it is excellent in water absorption and diffusivity, has a low wet feeling to the skin, and becomes a clean and comfortable side.
- the convex portion in the Y-shaped cross section or the cross-shaped cross section has a tip portion that is the same thickness as the base or thicker than the base.
- the shape of the convex portion is smaller than that of the base, if the tip is the same thickness as the base or thicker than the base, binding of irregularities becomes stronger by calendering described later, and as a result, deterioration of low air permeability of the fabric is well suppressed even after washing it can.
- the present inventors carefully studied the shape of the discharge hole of the spinneret and examined the polymer.
- the tip of the slit thicker than the root in the discharge hole of the die to be extruded
- the tip of the cross-sectional convex part of the monofilament becomes thinner at the time of cooling and drawing at the quenching part, that is, the taper of the cross-sectional convex part It came to For example, as in the nozzle discharge hole 10 shown in FIG.
- the width b of the tip 5 is set larger than the width a of the root 3 of the slit 1 and the length c of the slit 1 is appropriately adjusted.
- a monofilament is obtained which has a convex portion which is as thick as the base portion or thicker than the base portion and which can satisfy the heteromorphic degree in the above range.
- the fineness of the monofilament is not particularly limited, but is preferably 0.4 dtex or more, more preferably 0.6 dtex or more, and preferably 2.0 dtex or less, and 1.5 dtex or less. More preferable.
- a fabric having suitable tear strength and low air permeability can be obtained.
- the fineness of the monofilament is smaller than 0.4 dtex, the required tear strength can not be obtained because the fineness is too thin, and if it exceeds 2.0 dtex, it is difficult to obtain low air permeability.
- the material used for the monofilament is not particularly limited, but polyesters such as polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, nylon 6, nylon 66, nylon 46, nylon 12, nylon 610, nylon 612, copolymers thereof, etc. And synthetic polymers such as polyacrylonitrile, polyvinyl chloride, polyvinyl alcohol and the like.
- polyesters such as polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, nylon 6, nylon 66, nylon 46, nylon 12, nylon 610, nylon 612, copolymers thereof, etc.
- synthetic polymers such as polyacrylonitrile, polyvinyl chloride, polyvinyl alcohol and the like.
- polyamides are particularly preferable because the formed monofilament may have a soft texture even if it has an atypical cross section.
- the limiting viscosity of the material used for the monofilament is preferably 0.58 or more, more preferably 0.60 or more, and preferably 1.00 or less. It is more preferable that it is 90 or less.
- the limiting viscosity of the material is 0.58 or more, more preferably 0.60 or more, and preferably 1.00 or less. It is more preferable that it is 90 or less.
- the modified cross-section yarn may have a lower breaking strength than the round cross-section yarn, and the tear strength of the product due to the insufficient breaking strength, the reduction of the breaking strength, the breaking elongation
- the problems of deterioration of processing operability and deterioration of product durability due to shortage occur.
- it exceeds 1.00 the cost becomes very high and the practicality is lost.
- the limiting viscosity of the material is less than 0.60, because the concavo-convex part does not appear clearly and it has a shape like a triangular cross section.
- the relative viscosity of the material used for the monofilament is preferably 2.5 or more, and more preferably 3.0 or more. If the relative viscosity of the material is 2.5 or more, the resulting monofilament has an appropriate breaking strength. In addition, when the relative viscosity of the material is 3.0 or more, in the case of forming a Y-shaped cross section, the uneven portion can be clearly expressed.
- the modified cross-section yarn may have a lower breaking strength than the round cross-section yarn, and the tear strength of the product due to the insufficient breaking strength, the reduction of the breaking strength, the breaking elongation Problems such as deterioration of processing operability due to shortage and deterioration of product durability are likely to occur.
- the relative viscosity of the material is less than 3.0, since the concavo-convex part does not appear clearly and the shape becomes like a triangular cross section.
- a hygroscopic substance, an antioxidant, a matting agent, an ultraviolet ray absorbing agent, an antibacterial agent and the like may be added to the monofilament singly or in combination.
- the synthetic multifilament used in the present invention comprises the above monofilament.
- the fineness of the synthetic multifilament is not particularly limited, but is preferably 7 dtex or more, more preferably 10 dtex or more, preferably 44 dtex or less, and more preferably 33 dtex or less.
- the fineness of the synthetic multifilament is preferably 7 dtex or more, more preferably 10 dtex or more, preferably 44 dtex or less, and more preferably 33 dtex or less.
- the breaking strength of the synthetic multifilament is not particularly limited, but is preferably 4.0 cN / dt or more, and more preferably 4.2 cN / dt or more. If the strength of the synthetic multifilament is 4.0 cN / dt or more, an appropriate tearing strength fabric can be obtained even at a high degree of deformation.
- the breaking elongation of the synthetic multifilament is not particularly limited, but is preferably 35% or more, more preferably 38% or more, and preferably 50% or less, preferably 48% or less More preferable.
- the breaking elongation of the synthetic multifilament is in the above-mentioned range, when the produced fabric is torn, the tension at the time of tearing is dispersed to many yarns by appropriately stretching the yarn, and as a result, one yarn It is believed that the stress on the yarn is reduced and the tear strength of the fabric is improved.
- the breaking elongation is less than 35%, the tear strength of the produced fabric is likely to be concentrated on a single yarn to be torn, so that the tear strength of the fabric is lowered.
- the breaking elongation is greater than 50%, the yarn can not follow the tension change due to the speeding up of weaving, the densification, the reduction of friction, and the frictional resistance between various parts in contact with the yarn.
- the frequency of yarn generation may increase.
- the breaking strength may be lowered, and the tear strength of the produced woven fabric may be lowered, which is not preferable.
- the synthetic multifilament spinning method is not particularly limited.
- the process is carried out in two steps using a spin draw continuous apparatus by a spin draw method or a spinning apparatus and a drawing apparatus.
- the speed of the spinning draw godet roller is preferably set to 1500 m / min to 4000 m / min, and more preferably 2000 m / min to 3000 m / min.
- the boiling water shrinkage rate, thermal stress, birefringence, unevenness of thickness, etc. of the synthetic multifilament are not particularly limited. It may be crimped such as false twisting, or may be a composite yarn.
- the woven fabric of the present invention is composed of the above-described synthetic multifilament and is calendered on at least one side.
- the weave structure of the woven fabric is not particularly limited, and in addition to a plain tissue, any tissue such as a rat tissue or a satin tissue can be used, but a plain weave is preferably used to suppress air permeability. Furthermore, a ripstop taffeta is particularly preferably used to increase the tear strength of the fabric.
- the loom used for manufacture of the said fabric is not specifically limited, either, A water jet loom loom, an air jet loom, and a rapier loom can be used.
- the woven fabric is refined, relaxed, preset, dyed and finished using a general thin fabric processing machine.
- at least one side of the fabric is preferably calendered.
- monofilaments are compressed and fixed in an overlapping state in at least a part of the multifilaments, so that the low air permeability of the fabric can be maintained even after laundering.
- the calendering may be applied to only one side or both sides of the fabric, but if it is applied to both sides, the convex surface fibers on the front side of the fabric may be crushed to produce an undesirable gloss or hard texture. Furthermore, when the fabric has poor releasability and becomes wet, the fabric may have an unpleasant feeling such as sticking to the skin, so it is preferable to apply it on only one side when such a texture is not preferred. Further, the number of times of calendering is not particularly limited, and may be performed only once or plural times as long as the unevenness can be sufficiently compressed.
- the temperature for calendering is not particularly limited, but is preferably 80 ° C. or more higher than the glass transition temperature of the used material, more preferably 120 ° C. or more higher, and preferably 20 ° C. or more lower than the melting point of the used material, 30 ° C. or more Lower is more preferred.
- the calendering temperature in the above range, a fabric capable of maintaining both low air permeability and high tear strength can be obtained.
- the calendering temperature is lower than the glass transition temperature + 80 ° C. of the used material, the degree of compression of the monofilaments is weak, and it is difficult to obtain a fabric having a low air permeability.
- the calendering temperature is preferably 120 ° C. to 200 ° C., and more preferably 130 ° C. to 190 ° C.
- the calendering temperature is preferably 160 ° C to 240 ° C.
- the pressure for calendering is preferably 0.98 MPa (10 kgf / cm 2 ) or more, more preferably 1.96 MPa (20 kgf / cm 2 ) or more, and at 5.88 MPa (60 kgf / cm 2 ) or less It is preferable that the pressure be 4.90 MPa (50 kgf / cm 2 ) or less.
- the calendering pressure in the above range, a fabric capable of maintaining both low air permeability and tear strength can be obtained.
- the calendering pressure is less than 0.98 MPa (10 kgf / cm 2 )
- the degree of compression of the monofilament may be weak, and a fabric having low air permeability may not be obtained.
- it is higher than 5.88 MPa (60 kgf / cm 2 ) the monofilaments may be excessively compressed and the tear strength of the fabric may be significantly reduced.
- the material of the calender is not particularly limited, but one roll is preferably made of metal.
- the metal roll can adjust its own temperature and can uniformly compress the dough surface.
- the other roll is not particularly limited, but metal or resin is preferable, and in the case of resin, nylon is preferable.
- the above-mentioned woven fabric can be used together with various functional processing such as water repelling treatment, coating processing, lamination processing, and soft finishing or resin processing for adjusting texture and strength of the woven fabric, if necessary.
- various functional processing such as water repelling treatment, coating processing, lamination processing, and soft finishing or resin processing for adjusting texture and strength of the woven fabric, if necessary.
- functional processing such as water repelling treatment, coating processing, lamination processing, and soft finishing or resin processing for adjusting texture and strength of the woven fabric, if necessary.
- amino-modified silicones, polyethylenes, polyesters, paraffin-based softeners and the like can be used as softeners.
- Post-processing such as soft processing and silicone processing can be applied to finish.
- the resin processing agent various resins such as melamine resin, glyoxal resin, urethane resin, acrylic resin, polyester resin can be used.
- the cover factor (CF) of the resulting fabric is 1300 to 2200.
- the cover factor (CF) is preferably 1600 or more, and more preferably 2000 or less.
- T and W indicate the warp density and weft density of the fabric (book / 2.54 cm)
- DT and DW indicate the warp and weft thicknesses (dtex) constituting the fabric”.
- the tear strength of the woven fabric according to the pendulum method is not particularly limited, but both of the warp direction and the weft direction is preferably 8 N or more, more preferably 10 N or more, still more preferably 12 N or more, 50 N It is preferable that it is the following, It is more preferable that it is 40 N or less, It is more preferable that it is 30 N or less.
- Air permeability by Frazier method of the fabric, the initial value before washing, is preferably not more than 1.5cc / cm 2 / s, more preferably not more than 1.0cc / cm 2 / s. If the air permeability before washing is 1.5 cc / cm 2 / s or less, a fabric having excellent down proof properties can be obtained.
- Air permeability after washing 10 times of the fabric is preferably from 2.0cc / cm 2 / s, more preferably not more than 1.5cc / cm 2 / s. If the air permeability after washing 10 times is 2.0 cc / cm 2 / s or less, it can be said that the durability to washing is excellent without the occurrence of the dropout from the fabric during the washing. On the other hand, if the air permeability after 10 times of washing exceeds 2.0 cc / cm 2 / s, a drop-off will occur and the quality of the down jacket etc. will be greatly reduced.
- the water pressure resistance of the woven fabric is preferably 300 mm or more, more preferably 350 mm or more, at the initial value before washing. If the initial water pressure resistance is 300 mm or more, it can be said that the down proof property is excellent, and an effect that rain does not easily penetrate even when it is raining can be obtained. On the other hand, when the initial water pressure resistance is smaller than 300 mm, the rain penetrates down at the time of rainfall, and the effects such as heat retention are easily reduced.
- the water pressure resistance after washing 20 times of the fabric preferably has a retention of 70% or more with respect to the initial water pressure resistance, and more preferably 75% or more. If the water pressure resistance after 20 times of washing has a retention of 70% or more with respect to the initial water pressure resistance, it is possible to prevent the lowering of the down proofing property (down omission) due to washing and secure the minimum required waterproofness. It is easy.
- the fabric weight of the woven fabric is preferably 20 g / m 2 or more, more preferably 25 g / m 2 or more, preferably 60 g / m 2 or less, and more preferably 55 g / m 2 or less preferable.
- the fabric weight of the obtained fabric is preferably 20 g / m 2 or more, more preferably 25 g / m 2 or more, preferably 60 g / m 2 or less, and more preferably 55 g / m 2 or less preferable.
- FIG. 2 is an SEM photograph of a cross section illustrating the woven fabric of the present invention before calendering. In the woven fabric prior to calendering, the irregularities of monofilaments adjacent to each other in the synthetic multifilament overlap.
- FIG. 3 is an SEM photograph of a cross section illustrating the fabric of the present invention after calendering. In the fabric after calendering, at least a portion of the synthetic multifilaments are compression-fixed in a state in which monofilaments overlap each other. .
- the woven fabric according to the present invention is a lightweight thin fabric which is high in tear strength and can maintain low air permeability even after washing, and therefore, is suitably used in side garments such as down wear, down jackets, futons and sleeping bags.
- ⁇ Variation degree> Using a VH-Z450 microscope and a VH-6300 measuring machine (manufactured by KEYENCE), at a magnification of 1,500 times, the major diameter (diameter of the longest portion) and minor diameter (diameter of the shortest portion) of the cross section of the monofilament It measured and computed the major axis (diameter of the longest part) / minor axis (diameter of the shortest part) of the cross section of a monofilament, and made the average value of three pieces the heteromorphism degree of the monofilament.
- the fineness of the multifilament was determined by preparing three 100 m long multifilament cassettes, measuring the mass (g) of each, calculating the average value, and multiplying by 100.
- the fineness of the monofilament was obtained by dividing the fineness of the multifilament by the number of filaments.
- the sample solution was prepared by dissolving the sample in 96.3 ⁇ 0.1% by mass reagent concentrated sulfuric acid at a polymer concentration of 10 mg / ml.
- T 0 (sec) of 20 ml of 96.3 ⁇ 0.1% by weight special grade concentrated sulfuric acid of 96.3 ⁇ 0.1% by weight used to dissolve the sample was measured respectively.
- ⁇ Breaking strength> A sample length of 20 cm, a pulling rate of 20 cm / min, and a load of 1/33 (g) of fiber fineness (dtex) were applied using a Model 4301 Universal Material Tester manufactured by Instron Japan Ltd., and the measurement was 3 It implemented by repeating and made the average value of the strength at the time of fracture the fracture strength.
- the measuring method is the same as the above-mentioned breaking strength, and is the average value of the elongation at break.
- the compression state of the monofilaments is observed by using a VH-Z 450 microscope (manufactured by KEYENCE), observing the overlapping state of the monofilaments of the multifilaments of the fabric, and if it is in a state of overlapping well, Evaluated as x.
- CF cover factor (T ⁇ (DT) 1/2 + W ⁇ (DW) 1/2 “In the formula, T and W indicate the warp density and weft density of the fabric (book / 2.54 cm), and DT and DW indicate the warp and weft thicknesses (dtex) constituting the fabric”.
- ⁇ Tear strength> The tear strength of the fabric was measured in both directions of the process according to the tear strength D method (Pendulum method) defined in JIS L 1096 8.15.5.
- the air permeability of the woven fabric was measured according to the air permeability A method (Frazil type method) defined in JIS L 1096 8.27.1.
- the water pressure resistance of the woven fabric was measured in accordance with the water resistance test A method (low water pressure method) defined in JIS L1092.
- Washing of the fabric was carried out according to the F-2 method described in the dimensional change of the fabric of JIS L 1096 8.64.4. Washing 10 times is the case where washing-dehydration-drying is repeated 10 times, and washing 20 times is the case where it is repeated 20 times.
- the drying method was line drying. The water pressure resistance after 20 washings was measured by the above-mentioned method, and the water pressure holding ratio to the initial water pressure resistance was calculated. The washing durability of the fabric was evaluated by the air permeability after 10 times of washing and the water pressure resistance after 20 times of washing.
- a nylon 6 polymer chip with a relative viscosity of 3.5 and a spinning temperature of 288 ° C., 24 ejection holes (shape shown in FIG. 1, slit a width at slit a: 0.07 mm, slit tip width b: 0 Melt spinning from a spinneret with a .11 mm slit length c: 0.465 mm).
- the first godet roller speed is set to 2000 m / min
- the second godet roller speed is set to 3500 m / min
- the third godet roller speed is set to 3500 m / min
- the second godet roller is stretched at a stretching temperature of 153 ° C. did.
- a multifilament having a fineness of 33 dtex was obtained, consisting of 24 monofilaments having a degree of heterogeneity of 3.1 and a Y-shaped cross section.
- the breaking strength and breaking elongation of the obtained multifilament were evaluated by the above-mentioned method, and the results are shown in Table 1.
- the multifilaments were used for warp and weft, and weaved with a plain structure by setting the warp density to 186 yarns / 2.54 cm and the weft density to 130 yarns / 2.54 cm.
- the obtained dough is scoured using an open soaper according to a conventional method, pre-set at 190 ° C. for 30 seconds using a pin tenter, and made blue with an acid dye using a flow dyeing machine (Circular NS manufactured by Hisaka Manufacturing Co., Ltd.) After staining, an intermediate setting was performed at 180 ° C. for 30 seconds.
- calendering processing conditions: cylinder processing, temperature 150 ° C., pressure 2.45 MPa (25 kgf / cm 2 ), speed 20 m / min
- soft finishing is performed twice to one side of the fabric, and soft finishing is performed to obtain density
- a woven fabric having a length of 200 / 2.54 cm and a width of 135 / 2.54 cm, a cover factor of 1923 and a basis weight of 49 g / m 2 was obtained.
- the compression state, feel, tear strength, initial air permeability and water pressure resistance, washing durability, etc. of monofilament in multifilament were evaluated by the above-mentioned method. The results are shown in Table 1.
- Multifilaments and a woven fabric were produced in the same manner as in Example 1 except for weaving with a mini lip texture (lipstop taffeta texture) shown in FIG.
- the obtained multifilament and the woven fabric were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- a multifilament and a fabric were produced in the same manner as in Example 1 except that the Y-shaped mouthpiece discharge hole was changed to a cross shape.
- the obtained multifilament and the woven fabric were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Example 1 Multifilaments and a woven fabric were produced in the same manner as in Example 1 except that the Y-shaped mouthpiece discharge hole was changed to one having a round cross section of 0.25 mm in diameter. The obtained multifilament and the woven fabric were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Comparative example 2 A multifilament having a fineness of 56 dtex, consisting of 24 monofilaments having a modification degree of 3.0, in the same manner as in Example 1, except that the discharge rate of the extruder was changed so that the fineness of the resulting multifilament was 56 dtex. Obtained. Also, using the multifilament, a fabric was produced in the same manner as in Example 1. The obtained multifilament and the woven fabric were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Comparative example 3 The spinneret with 24 Y-shaped discharge holes was changed to one with 5 triangular discharge holes, and the discharge amount of the extruder was changed so that the denier of the resulting multifilament would be 5.5 dtex.
- a multifilament having a fineness of 5.5 dtex which comprises five monofilaments having a degree of heterogeneity of 1.5, was obtained.
- the same multifilament as in Example 1 was used except that the multifilament was used for warp and weft, the warp density was set to 280 / 2.54 cm, the weft density to 275 / 2.54 cm, and the lip structure was woven.
- a fabric was made. The obtained multifilament and the woven fabric were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Comparative example 4 In the same manner as in Example 1 except that the density of multifilaments used for warp and weft was set to 95 / 2.54 cm and 98 / 2.54 cm, respectively, in weaving. Fabrics were made. The obtained multifilaments and the woven fabric were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- the fabrics of Examples 1 to 4 were lightweight thin fabrics, high in tear strength, and maintained low air permeability after washing.
- the woven fabric of Comparative Example 1 used monofilaments of round cross section, and even after calendering, the monofilaments did not overlap so much, and the compressed state was not good. Since the woven fabric of Comparative Example 2 uses a multifilament having a large denier, it becomes a bulky, heavy and hard fabric, and is also inferior in washing durability.
- the fabric of Comparative Example 3 is a lightweight and soft fabric because it uses a multifilament consisting of monofilaments having a triangular cross section and having a small cross section and having a small denier, but the tear strength is small and the monofilaments in the multifilaments are It did not overlap very much and was inferior to washing durability.
- the fabric of Comparative Example 4 was a lightweight fabric because it had a small cover factor, but had a high air permeability before washing.
- the woven fabric of Comparative Example 5 had small tear strength because it used a monofilament having a large degree of heteromorphism.
- the fabric of Comparative Example 6 was not subjected to calendering, it had high air permeability before washing, and was very poor in washing durability.
- the present invention is suitably used for side clothes such as down wear, down jackets, futons and sleeping bags.
Abstract
Description
CF=T×(DT)1/2+W×(DW)1/2
「式中、TおよびWは織物の経密度および緯密度(本/2.54cm)を示し、DTおよびDWは織物を構成する経糸および緯糸の太さ(dtex)を示す」。
VH-Z450型顕微鏡およびVH-6300型測定機(KEYENCE社製)を用い、1500倍の倍率で、モノフィラメントの断面の長径(もっとも長い部分の径)および短径(もっとも短い部分の径)をそれぞれ測定し、モノフィラメントの断面の長径(もっとも長い部分の径)/短径(もっとも短い部分の径)を算出し、3本の平均値をモノフィラメントの異型度とした。
マルチフィラメントの繊度(総繊度)は、100m長のマルチフィラメントのカセを3つ作製し、各々の質量(g)を測定し、平均値を求め、100倍して求めた。モノフィラメントの繊度は、マルチフィラメントの繊度をフィラメント数で除したものとした。
極限粘度(IV)は、p-クロルフェノールとテトラクロルエタンからなる混合溶媒(p-クロルフェノール/テトラクロルエタン=75/25)を用い、30℃で測定した極限粘度〔η〕を、下記の式によりフェノールとテトラクロルエタンからなる混合溶媒(フェノール/テトラクロルエタン=60/40)の極限粘度(IV)に換算したものである。
IV=0.8325×〔η〕+0.005
96.3±0.1質量%の試薬特級濃硫酸中にポリマー濃度が10mg/mlになるように試料を溶解させてサンプル溶液を調製した。20℃±0.05℃の温度で水落下秒数が6から7秒のオストワルド粘度計を用い、20℃±0.05℃の温度で、調製したサンプル溶液20mlの落下時間T1(秒)及び試料を溶解するに用いた96.3±0.1質量%の試薬特級濃硫酸20mlの落下時間T0(秒)を、それぞれ測定した。使用する素材の相対粘度(RV)は下記の式により算出された。
RV=T1/T0
インストロンジャパン(株)社製の4301型万能材料試験機を用い、試料長:20cm、引っ張り速度:20cm/分、糸繊度(dtex)の1/33(g)の荷重をかけ、測定を3回実施して、破断したときの強度の平均値を破断強度とした。
測定方法は上記破断強度と同様で、破断したときの伸度の平均値である。
モノフィラメントの圧縮状態は、VH-Z450型顕微鏡(KEYENCE社製)を用い、織物のマルチフィラメントにおけるモノフィラメント同士の重なり合う状態を観察して、よく重なり合った状態であれば○、あまり重なっていない状態であれば×として評価した。
織物の目付けは、JIS L 1096 8.4に規定されている単位面積あたりの質量に準拠して測定した。
織物のカバーファクター(CF)は、下記の式により計算した。
CF=T×(DT)1/2+W×(DW)1/2
「式中、TおよびWは織物の経密度および緯密度(本/2.54cm)を示し、DTおよびDWは織物を構成する経糸および緯糸の太さ(dtex)を示す」。
織物の引裂き強力は、JIS L 1096 8.15.5に規定されている引裂強さD法(ペンジュラム法)に準拠して、経緯の両方向において測定した。
織物の通気度は、JIS L 1096 8.27.1に規定されている通気性A法(フラジール形法)に準拠して測定した。
織物の耐水圧は、JIS L 1092に規定されている耐水度試験A法(低水圧法)に準拠して測定した。
織物の洗濯は、JIS L 1096 8.64.4の織物の寸法変化に記載されているF-2法に準拠して実施した。洗濯10回は洗濯-脱水-乾燥を10回繰り返した場合であり、洗濯20回は20回繰り返した場合である。乾燥方法はライン乾燥で行った。洗濯20回後の耐水圧を前記方法により測定し、初期耐水圧に対する耐水圧保持率を計算した。織物の洗濯耐久性は、洗濯10回後の通気度および洗濯20回後の耐水圧保持率により評価した。
織物の風合いは、評価者5人をランダムに選定し、56T24Fの平織物をブランクとし、最もやわらかく感じるものを5点、最も硬く感じるものを1点とし、1点から5点までの5段階で評価した。
Y字型の口金吐出孔を、直径0.25mmの丸断面を有するものに変更した以外は実施例1と同様の方法で、マルチフィラメント及び織物を作製した。得られたマルチフィラメント及び織物について、実施例1と同様の方法で評価を行った。結果を表1に示す。
押し出し機の吐出量を、得られるマルチフィラメントの繊度が56dtexになるよう変更した以外は実施例1と同様の方法で、異型度が3.0のモノフィラメント24本からなる、繊度56dtexのマルチフィラメントを得た。また、該マルチフィラメントを用い、実施例1と同様の方法で織物を作製した。得られたマルチフィラメント及び織物について、実施例1と同様の方法で評価を行った。結果を表1に示す。
24個のY字型吐出孔を備える紡糸口金を、5個の三角形吐出孔を備えるものに変更し、また押し出し機の吐出量を、得られるマルチフィラメントの繊度が5.5dtexになるよう変更した以外は実施例1と同様の方法で、異型度が1.5のモノフィラメント5本からなる、繊度5.5dtexのマルチフィラメントを得た。また、該マルチフィラメントを経糸及び緯糸に用い、経密度を280本/2.54cm、緯密度を275本/2.54cmに設定し、リップ組織で製織を行った以外は実施例1と同様の方法で、織物を作製した。得られたマルチフィラメント及び織物について、実施例1と同様の方法で評価を行った。結果を表1に示す。
製織の際に、経糸及び緯糸に用いるマルチフィラメントの密度を、経密度95本/2.54cm、緯密度98本/2.54cmに設定した以外は実施例1と同様の方法で、マルチフィラメントおよび織物を作製した。得られたマルチフィラメントおよび織物について、実施例1と同様の方法で評価を行った。結果を表1に示す。
Y字型の口金吐出孔を十字型に変更した以外は実施例1と同様の方法で、マルチフィラメントおよび織物を作製した。得られたマルチフィラメントおよび織物について、実施例1と同様の方法で評価を行った。結果を表1に示す。
織物にカレンダー加工を施さなかった以外は実施例1と同様の方法で、マルチフィラメントおよび織物を作製した。得られたマルチフィラメントおよび織物について、実施例1と同様の方法で評価を行った。結果を表1に示す。
Claims (10)
- 合成マルチフィラメントで構成される織物であって、前記織物は、少なくとも片面にカレンダー加工が施されることにより、合成マルチフィラメントの少なくとも一部においてモノフィラメントが重なり合った状態で圧縮されているものであり、
前記モノフィラメントはカレンダー加工前の異型度が2.0~6.0である異型断面糸であり、前記合成マルチフィラメントの繊度が7dtex~44dtexであり、前記織物のカバーファクターが1300~2200であることを特徴とする織物。 - 前記モノフィラメントが、0.4dtex~2.0dtexの繊度を有するものである請求項1に記載の織物。
- 前記モノフィラメントが、凹部を含む断面を有するものである請求項1または2に記載の織物。
- 前記モノフィラメントが、Y字型断面或いは十字型断面を有するものである請求項1~3のいずれかに記載の織物。
- 前記Y字型断面或いは十字型断面における凸部は、先端部が基部と同じ太さか基部よりも太く構成されている請求項4に記載の織物。
- 前記モノフィラメントに使用する素材が、ポリアミドまたはポリエステルである請求項1~5のいずれかに記載の織物。
- 前記織物のペンジュラム法による引裂き強力が、経方向及び緯方向のいずれも8N~50Nである請求項1~6のいずれかに記載の織物。
- 前記織物の洗濯10回後の通気度が、2.0cc/cm2/s以下である請求項1~7のいずれかに記載の織物。
- 前記織物の洗濯20回後の耐水圧が、初期耐水圧に対して70%以上の保持率を有する請求項1~8のいずれかに記載の織物。
- ダウンウエア、ダウンジャケット、ふとん、寝袋のいずれかの側地に用いられる請求項1~9のいずれかに記載の織物。
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