WO2006027967A1 - Fil élastique ayant une excellente aptitude à être manipulé - Google Patents

Fil élastique ayant une excellente aptitude à être manipulé Download PDF

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Publication number
WO2006027967A1
WO2006027967A1 PCT/JP2005/015713 JP2005015713W WO2006027967A1 WO 2006027967 A1 WO2006027967 A1 WO 2006027967A1 JP 2005015713 W JP2005015713 W JP 2005015713W WO 2006027967 A1 WO2006027967 A1 WO 2006027967A1
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Prior art keywords
yarn
elastic
elongation
fabric
fiber
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PCT/JP2005/015713
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English (en)
Japanese (ja)
Inventor
Ryoji Nakamura
Masumi Goto
Original Assignee
Toyo Boseki Kabushiki Kaisha
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Priority claimed from JP2004262453A external-priority patent/JP2006077358A/ja
Priority claimed from JP2004265331A external-priority patent/JP2006077375A/ja
Application filed by Toyo Boseki Kabushiki Kaisha filed Critical Toyo Boseki Kabushiki Kaisha
Publication of WO2006027967A1 publication Critical patent/WO2006027967A1/fr

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Classifications

    • 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
    • D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
    • 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

Definitions

  • the present invention relates to an elastic yarn excellent in handleability in a fabric-making process. Specifically, the elongation is low V, so that the fabric can be manufactured with excellent handleability and excellent stretchability. It relates to elastic yarn. The present invention also relates to such an elastic composite yarn.
  • Elastic yarns using polyurethane elastic fibers or urethane fibers are widely used in the clothing field and the like, and their uses are expanding year by year.
  • elastic yarn is used alone, but in order to improve tactile sensation, fabric surface gloss and color uniformity, core-sheath type composite spun yarn, force-balancing yarn, etc. in combination with non-elastic yarn Often used as a composite yarn (see, for example, Patent Documents 1 and 2).
  • this elastic yarn has a high elongation rate, it is difficult to handle such as unnecessarily stretching during yarn production or weaving and knitting. For this reason, a warping machine with a positive yarn feeding device and a special knitting and weaving machine are necessary. However, even if these devices are used, handling and workability are still poor. Furthermore, this elastic yarn caused a large tension fluctuation due to a slight disturbance such as friction during the yarn manufacturing operation or the weaving operation, and this caused a deterioration in the appearance quality of products such as woven fabrics and knitted fabrics.
  • the structure of the knitted fabric has been devised as a means of maintaining good quality of the product fabric (see, for example, Patent Document 3), but the product configuration is limited to maintain the quality of the fabric, and the quality improvement effect is sufficient. Then I helped. Also, since conventional elastic yarns have high elongation and high shrinkage force, increasing the hardness of the package around which the yarn is wound increases the elongation rate of the yarn outside the knockage, and the release of the knockage force is poor. Therefore, it was necessary to wrap it in software (see, for example, Patent Document 4).
  • Patent Document 1 JP 2001-355138 A
  • Patent Document 2 JP 2004-36016 A
  • Patent Document 3 Japanese Patent Laid-Open No. 10-158905
  • Patent Document 4 JP-A-7-61708
  • the first object of the present invention is to provide an elastic yarn that can produce a fabric that exhibits good stretchability and recoverability as well as good handleability in the yarn and fabric production process.
  • a second object of the present invention is to provide such an elastic composite yarn.
  • An elastic yarn having a breaking elongation of 80 to 300%, a breaking elongation after heat treatment of 500% or more, and a recovery rate of elongation of 50% or more is handled during yarn production and fabric production. It is easy to obtain a fabric having excellent stretchability by heat-treating the fabric after production.
  • the cross-linked polyolefin elastic yarn is heat-set at 60 ° C. or higher while being stretched to obtain an elastic yarn having the above characteristics.
  • the present invention has been completed based on the above findings, and provides the following elastic yarn and elastic composite yarn.
  • An elastic yarn having a breaking elongation of 80 to 300%, a breaking elongation of 500% or more, and an elongation recovery rate of 50% or more by heat treatment.
  • Item 2 The material force including cross-linked polyolefin.
  • Item 3 A fabric comprising the elastic yarn according to Item 1.
  • Item 4 A method for producing a stretchable fabric, wherein a stretchable fabric is obtained by heat-treating the fabric according to Item 3. [0012] Item 5. The method according to Item 4, wherein the heat treatment is heat treatment at 60 to 200 ° C. for 1 to 60 minutes.
  • Item 6 A method for producing an elastic yarn, comprising the step of heat-setting the crosslinked polyolefin elastic yarn at 60 ° C. or higher while stretching or after stretching.
  • Item 7 The method according to Item 6, wherein the film is elongated at an elongation rate of 100 to 450%.
  • Item 8 The method according to Item 6, wherein the heat setting is performed for 0.03 seconds to 1 minute.
  • Item 9 A composite composite yarn having an elongation rate of 10% or less and an elongation rate of 30% or more by heat treatment.
  • Item 10 The elastic composite yarn according to Item 9, comprising an elastic fiber and a non-elastic fiber made of a material containing a cross-linked polyolefin.
  • Item 11 A fabric comprising the elastic composite yarn according to Item 9.
  • Item 12 A method for producing a stretchable fabric, which obtains a stretchable fabric by subjecting the fabric according to Item 11 to a heat treatment.
  • Item 13 The method according to Item 12, wherein the heat treatment is a heat treatment at 60 to 200 ° C. for 0.5 to 60 minutes.
  • Item 14 Manufacture of an elastic composite yarn comprising a step of heat-setting a composite yarn comprising a crosslinked polyolefin elastic fiber and a non-elastic fiber at 60 ° C. or higher while the elastic fiber is stretched or stretched Method.
  • Item 15 The method according to Item 14, wherein elongation is performed at an elongation rate of 100 to 450%.
  • Item 16 The method according to Item 14, wherein the heat setting is performed for 0.03 seconds to 60 minutes.
  • the elastic yarn and the elastic composite yarn of the present invention have a moderately low elongation at which the tension change of the yarn is small when the yarn is unwound during knitting and weaving. For this reason, it is easy to handle and the manufacturing process is easy to manage.
  • the yarn since the yarn does not easily cause a difference in yarn length due to tension, the yarn has a small difference in stretch rate between the inner yarn and the outer yarn of the package, so that a fabric having a uniform width can be obtained.
  • elasticity develops for the first time in a process involving heating, such as a dyeing finishing process, and a fabric having sufficient stretchability is obtained.
  • the fabric produced from the elastic yarn and elastic composite yarn of the present invention is prone to sag with use. However, the stretchability is restored by heat treatment.
  • the elastic yarn of the present invention is a yarn having a breaking elongation of about 80 to 300%, a breaking elongation of 500% or more, and an elongation recovery rate of 50% or more by heat treatment.
  • the elastic yarn may be a monofilament yarn or a multifilament yarn.
  • the heat treatment is a boil treatment for 60 minutes under no load or slight load in boiling water.
  • the elongation at break of the elastic yarn of the present invention is preferably about 80 to 250%, more preferably about 80 to 200%.
  • permanent deformation hardly occurs after stretching, and subsequent shrinkage due to heat treatment is difficult to be suppressed by permanent strain.
  • good elongation and stretch recovery are obtained in the heat-treated fabric, and yarn breakage is less likely to occur in the fabric-making process where partial breakage of the fabric is unlikely to occur during elongation heat setting.
  • a special device such as a tension adjuster or an active yarn feeding device, which makes it difficult to change the length of the elastic fiber due to tension fluctuation during the fabric manufacturing process, is used. Even when supplied to a fabric preparation machine or a knitting weaving machine, a fabric of good quality can be obtained.
  • the elongation at break after heat treatment of the elastic yarn of the present invention is preferably 600% or more.
  • the upper limit of the breaking elongation is not particularly limited, but is usually about 800%.
  • the stretchability of the fabric obtained by the heat treatment is sufficient, the elongation stress is reduced, and sufficient recovery performance and, in turn, excellent shape stability are obtained.
  • the elongation recovery rate after heat treatment of the elastic yarn of the present invention refers to the recovery rate after 300% elongation, and is specifically a value measured by the method described in the examples.
  • the elongation recovery rate after the heat treatment is preferably 70% or more.
  • the upper limit of the elongation recovery rate after the heat treatment is not particularly limited, but is usually about 80%. Within this range, a fabric having practical stretch properties can be obtained by heat treatment.
  • the elastic yarn of the present invention includes, but is not limited to, a crosslinked polyolefin fiber. And the like.
  • Cross-linked polyolefin is a fiber obtained by subjecting a substantially linear olefin to a cross-linking treatment, and has a substantially uniform branch with respect to the main chain.
  • a cross-linked polyolefin is polymerized with an olefin monomer and then chemically cross-linked using, for example, a radical initiator or a coupling agent, or an energy beam such as an electron beam, j8 ray, or ⁇ ray. It can be obtained from the cross-linking from the irradiation.
  • the cross-linking method is preferably cross-linking by irradiation with energy rays in consideration of the stability after it has become a product.
  • the degree of cross-linking is preferably 40% by weight or less (ie, the gel content of 30% by weight or more) (ie, the gel content of 30% by weight or more) measured by ASTM D-2765, for example. More preferably, the gel content is 60% by mass or more.
  • Examples of olefins include ethylene.
  • Specific examples of the cross-linked polyolefin include a cross-linked low density polyethylene copolymerized with ⁇ -olefin, and a cross-linked polyolefin described in JP-T-Heisei 20 02-515530.
  • Crosslinked polyolefin elastic fibers have excellent stretchability, chemical resistance, weather resistance, and heat resistance due to the crosslinked structure.
  • the elastic yarn of the present invention can be obtained by, for example, heat setting a yarn having a cross-linked polyolefin fiber strength.
  • heat setting refers to heat treatment while stretching, and heat treatment after stretching.
  • a cross-linked polyolefin-based reinforcing yarn is usually obtained by winding a polyolefin fiber as a monofilament or a multifilament by a melt spinning method and subjecting it to a cross-linking treatment.
  • the elastic fiber of the present invention can be obtained by stretching this elastic fiber and heat-setting at 60 ° C. or higher, preferably 80 ° C. or higher, which is the melting point of the crosslinked polyolefin crystal. This heat setting treatment may be carried out after crosslinking, but if online crosslinking is possible, it is possible to carry out continuous treatment following the crosslinking on the spinning line.
  • the heat setting temperature may be a temperature lower than the melting temperature of the fiber so that the fiber does not deteriorate. Since the fusing temperature of the crosslinked polyolefin fiber is about 220 ° C, the temperature may be lower than that, for example, 180 ° C or less. Since a cross-linked structure is introduced into polyolefin, it can be heat-treated at a temperature higher than the crystalline melting point of polyolefin. [0039] The heat setting temperature is the yarn temperature, and the heating temperature may be determined according to the processing speed and the length of the calorific heating device so that the yarn temperature falls within the above range.
  • the heating method does not matter whether it is dry heat or wet heat, but if there are combined materials, the method that is usually used can be adopted. For example, wet heat may be used when used in combination with cotton fibers, and dry heat may be used when used with polyester fibers.
  • wet heat may be used when used in combination with cotton fibers
  • dry heat may be used when used with polyester fibers.
  • non-contact heating devices are preferred for uniform processing.
  • the heat treatment time may be about 0.03 to 1 minute.
  • the elongation percentage is determined by the elongation of the elastic yarn after crosslinking.
  • an elastic yarn having a breaking elongation of 80 to 300% can be obtained by stretching about 2 to 5.5 times (100 to 450%).
  • it may be stretched by about 2 to 4.5 times.
  • This heat setting may be performed by a heating roller, but in this case, it is desirable to remove the tension after cooling sufficiently and then wind it around the package. It can be rolled up into a package while being stretched and batch-heat treated in the form of cheese.
  • it since partial adhesion may occur during heating and release may be impaired, it may be heat-set as a composite yarn covered with non-elastic fibers. preferable.
  • the elastic fiber of the present invention can be produced by weaving and knitting alone or in combination with different types of yarn.
  • the elastic fiber of the present invention is a yarn in a temporarily set state, and can be woven or knitted in a temporarily set low-stretch state, so that it can be handled as easily as an inelastic yarn.
  • this fabric is poor in stretchability, it becomes a fabric excellent in stretchability by performing heat treatment at, for example, about 60 to 200 ° C, preferably about 100 to 180 ° C for 1 to 60 minutes.
  • the heat treatment is usually performed in the scouring process or the dyeing process of the fabric.
  • the elastic composite yarn of the present invention is a yarn having an elongation rate of 10% or less and an elongation rate of 30% or more by heat treatment.
  • the elongation percentage is preferably 5% or less.
  • the lower limit of the elongation rate is not particularly limited, but is usually about 1%.
  • Within the range of the above-mentioned elongation rate it becomes easy to handle in the knitting weaving preparation process, specifically the warping process, and is not easily affected by disturbances such as friction that easily occur in the subsequent process.
  • the fabric manufactured with this elastic composite yarn has good quality.
  • the heat treatment includes boiling for 30 minutes under no load or slight load in boiling water.
  • the elastic composite yarn of the present invention exhibits elasticity by heat treatment.
  • the elongation after the heat treatment is preferably 40% or more, more preferably 50% or more.
  • the upper limit of the elongation after the heat treatment is not particularly limited, but is usually about 100%. If it is the range of the said elongation rate, the fabric which has practically sufficient stretch performance will be obtained.
  • the elastic composite yarn of the present invention may be a composite yarn containing elastic fibers and non-elastic fibers.
  • the elastic fiber include, but are not limited to, a crosslinked polyolefin elastic fiber.
  • the cross-linked polyolefin fiber exhibits stretchability by heat treatment.
  • a chloride bleaching process may be performed to obtain the whiteness and soft texture of the cotton in the dyeing finishing process, and when making a composite yarn with polyester fiber. May be subjected to alkali weight loss processing, but the cross-linked polyolefin fiber is an elastic fiber having chemical resistance, and has an advantage that it can withstand such a post-processing step.
  • cross-linked polyolefin fiber is as described above.
  • Cross-linked polyolefin fibers can be used singly or in combination of two or more.
  • the material of the inelastic fiber is not particularly limited.
  • natural fibers such as cotton fiber, hemp fiber, kenaf fiber, natto fiber, soy protein fiber, wool fiber, silk fiber, cashmere fiber, mohair fiber; rayon fiber, cubra fiber, acetate fiber, promix fiber, polymilk
  • acid fibers polyester fibers, polyamide fibers, polyolefin fibers, vinylon fibers, and chemical fibers such as acrylic fibers.
  • Inelastic fibers can be used singly or in combination of two or more.
  • the form of the elastic composite yarn of the present invention is preferably a composite spun yarn with an inelastic body fiber or a canopy ring yarn in which an elastic yarn is ringed with an inelastic filament.
  • the composite yarn of the present invention is preferably a composite spun yarn using a cross-linked polyolefin fiber for the core and a short fiber such as cotton for the sheath.
  • Cano rings using cross-linked polyolefin fibers for the core and polyester filament yarns, polyamide filament yarns, semi-synthetic fiber filaments such as polyolefin filaments and acetate, or bulky processed yarns of these, for the sheath Yarn is also preferred.
  • the core-sheath material can be reversed if necessary.
  • the coverage is preferably 40% or more, more preferably 60% or more.
  • the frictional resistance can be made sufficiently low within the above-mentioned coverage range.
  • the upper limit of the coverage is usually about 95%.
  • the coverage is almost the same as the value expressed by Equation (1).
  • T is the number of times of canoring (TZm)
  • F is the number of wound inelastic filament yarns
  • d is the fineness (denier) of the single yarn of the inelastic filament yarns.
  • the covering yarn is a non-elastic filament yarn wound around the elastic yarn in two or more layers. Accordingly, the coverage of the canoring yarn can be adjusted by the fineness of the inelastic filament yarn used and the number of times of canoring.
  • the coverage of composite spun yarn can be defined in substantially the same manner, but the degree of coating is often expressed by the blending rate of elastic yarn and the twist coefficient.
  • the mixed power factor can be calculated from the number of coated fibers.
  • the twist coefficient (K) is calculated using the formula (2)
  • TPI is the number of twists per inch and Ne is the cotton count of the spun yarn
  • the coverage of the composite spun yarn can be calculated by using the mixture rate of the elastic yarn, the yarn count, the twist coefficient, and the fiber diameter of the short fiber.
  • the elastic yarn is mixed. Under general conditions where the utilization rate is 30% or less, the coverage rate is usually 100% or more, and no special attention is required.
  • the elongation rate after the heat treatment depends on the constituent ratio of the elastic fiber in the composite yarn and the binding force of the inelastic yarn.
  • the mixing ratio of the elastic yarn in the composite yarn is preferably 20% or less, more preferably 15% or less.
  • the lower limit of the mixture ratio of elastic yarn is usually about 10%.
  • a composite yarn having an elongation rate of 10% or less and an elongation rate of 30% or more by heat treatment can be obtained.
  • the degree of exposure of the crosslinked polyolefin fiber in the composite yarn is small, it is possible to produce a high-quality fabric having a low frictional resistance and having a sufficient stretch performance. .
  • the binding force of the inelastic yarn mainly depends on the number of twists of the composite yarn.
  • the twist coefficient of the composite yarn is preferably 4.5 or less for the spun yarn and 9000 or less for the covering yarn.
  • the lower limit of the twist coefficient is usually about 3.5 for spun yarn and about 4000 for canoring yarn. If it is in the above range, the elastic composite yarn having an elastic yarn binding force of inelastic yarn and an elongation rate of 10% or less and an elongation rate of 30% or more by heat treatment by heat setting described later. Is obtained. Moreover, if it is the said range, even when it is a case where it uses for the warp of a textile fabric, favorable ironing resistance is shown.
  • the elastic composite yarn of the present invention having an elongation of 10% or less can be obtained.
  • the finely spun composite yarn can be set under wet heat conditions in a state of being wound around a yarn tube. Sufficiently penetrate the steam to the inner layer of the thread wound around the thread tube, In order to reduce the difference in the set conditions between the inner layer yarn and the outer layer yarn, and in order to control the temperature uniformly by supplying steam after depressurization in the pressure cooker
  • the heat setting temperature should be 60 ° C or higher, preferably 80 ° C or higher.
  • the temperature can be raised to about 130 ° C under pressure, but in order for the resulting elastic composite yarn to exhibit sufficient elasticity by heat treatment in the scouring process or dyeing process, the temperature is 95 ° C or less. 90 ° C or less is preferable.
  • the heat treatment is preferably performed for 0.03 seconds to 60 minutes.
  • the elastic composite yarn containing the cross-linked polyolefin elastic fiber has a very small shrinkage stress generated during wet heat setting. Since conventional elastic composite yarns have a large shrinkage stress, force that requires a moist and heat resistant bobbin other than paper such as bakelite or aluminum is required for wet heat setting.
  • the crystalline melting point of bridge-type polyolefin elastic fiber is about 60 ° C. Since the shrinkage stress is reduced by releasing a part of the network due to the melting of the low crystals, the paper tube used in the conventional method can be used for the covering yarn.
  • the heat set is a steam set from the viewpoint that the conventional equipment can be diverted, but a dry heat set can also be used.
  • a dry heat set can also be incorporated into the composite yarn manufacturing process.
  • a composite yarn can also be produced by combining an elastic fiber that has been previously stretched and set with dry heat or wet heat with an inelastic fiber without stretching. In order to reduce the production cost, it is preferable to reduce the stretchability by heat setting after making the composite yarn.
  • the elongation during heat setting is preferably about 100 to 450%, more preferably about 250 to 350%.
  • the set yarn has a sufficiently low elongation and is easy to handle, and the set yarn does not become too low in the knitting and weaving process. It becomes.
  • the composite elastic fiber of the present invention can be produced by weaving and knitting alone or in combination with different types of yarn.
  • the elastic fiber of the present invention is a yarn in a temporarily set state, and can be woven and knitted in a temporarily set state with low stretchability.
  • This fabric becomes a fabric excellent in stretchability by performing a heat treatment at about 60 to 200 ° C., preferably about 80 to 190 ° C. for 0.5 to 30 minutes.
  • the heat treatment is usually performed in a scouring process or a dyeing process of the fabric.
  • Elongation recovery rate was calculated by the following formula, assuming that the gauge length at which stress becomes 0 is L1 and the gauge length before elongation is L0.
  • a monofilament cheese of 44dtex cross-linked polyolefin fiber (DOW XLA manufactured by Toyobo Co., Ltd.) with a breaking elongation of 600% is placed on a pair of rollers, and the yarn is unwound in the circumferential direction of the package while rotating the knock.
  • DOW XLA manufactured by Toyobo Co., Ltd.
  • the heat set time was about 0.1 second.
  • the elongation rate during heat setting was about 2.5 times.
  • the shape of the wound package was good.
  • Table 1 shows the evaluation results of the breaking elongation, breaking elongation after boiling water treatment, and elongation recovery rate of the obtained yarn.
  • Nylon-processed yarn (Toyobo Co., Ltd., baller) 44dtexl0 filament was knitted with a 20-inch diameter santo-type 28 gauge circular knitting machine, and a milled knitted fabric with 8% elastic yarn mixing ratio Got.
  • the elastic yarn does not actively feed (that is, the package is rotated in the unwinding direction on the roller), and the yarn is left in the same direction as the nylon-processed yarn, leaving the yarn in the direction of the package axis.
  • the unwinding method was used, but the innermost thread of the cheese was released smoothly.
  • the obtained knitted fabric had no knitting steps and a uniform knitted fabric was obtained.
  • this knitted fabric was scoured in a conventional bath at 90 ° C for about 30 minutes, the knitted fabric width shrunk to 60%, and a knitted fabric suitable for underwear with high quality and high elasticity was obtained. .
  • Example 1 a monofilament of 156 dtex (DOW XLA) manufactured by Toyobo Co., Ltd. was used in place of the monofilament of crosslinked polyolefin fiber 44 dtex having a breaking elongation of 600% in Example 1. Then, an elastic yarn was obtained in the same manner as in Example 1 except that the total draft ratio (elongation rate at the time of heat setting) was about 4.5 times. The shape of the wound package was good. Table 1 shows the evaluation results of the breaking elongation, breaking elongation after boiling water treatment, and elongation recovery rate of the obtained yarn.
  • a rough yarn made of cotton fibers having an average fiber length of 26 mm was drafted 48 times between the front roller and the back roller, and at the same time, the cross-linked polyolefin fiber drawn and set as described above was tensioned on the front roller.
  • the product was supplied without drafting, and was twisted into a spinning cup under a tension of 70 g with a twisting coefficient of 4.2, and a 12-cotton core-sheath type composite spun yarn was obtained. It was possible to release smoothly to the innermost layer.
  • the mixture ratio of cross-linked polyolefin fiber was 7.9%.
  • This spun yarn was set (steamed) at 70 ° C for 15 minutes. 540 of this spun yarn
  • the ropes are put together in a rope shape and run in parallel, and are dipped in a dyeing bath with an indigo dye bath concentration of 3 gZ liters for 30 seconds using a conventional rope dyeing machine. Since it takes time, it is squeezed so that there is no stain, and the dyeing is performed by performing 8 cycles of air ring for acid and soot for 2 minutes, then washing, oiling, and drying. A rope-like product dyed with indigo rope by drying and pasting was obtained. This was split. At this time, the rope-like composite elastic yarn could be split smoothly with almost no stretch.
  • the 12th yarn of pre-dyed cotton yarn was driven into the warp yarn obtained by the splitting as a weft, and scouring was carried out in a bathtub at 85 ° C for 20 minutes in the usual manner.
  • This fabric is a high-quality fabric that stretches in the vertical direction and is suitable for stretch jeans.
  • Example 1-1 monofilament of cross-linked polyolefin fiber 44dtex (DOW XLA manufactured by Toyobo Co., Ltd.) having a breaking elongation of 600% was fed without stretching heat setting, and a compensator was installed on the machine.
  • a knitted fabric was obtained in the same manner as in Example 1 except that the tension was applied and stretched 2.5 times and fed to the knitting machine.
  • the knitted fabric was scoured by a conventional method in a bathtub at 90 ° C for about 30 minutes, the knitted fabric width shrunk to 68%, and a knitted fabric suitable for underwear with high elasticity was obtained.
  • the yarn was drawn up, the stretchability was great and handling was extremely difficult. Unevenness occurred during knitting, resulting in a lot of unevenness due to the knitting step, resulting in a knitted fabric with poor quality.
  • Table 1 shows the evaluation results of the breaking elongation, the breaking elongation after boiling water treatment and the elongation recovery rate of the crosslinked polyolefin fiber used in Comparative Example 11.
  • a knitted fabric was obtained in the same manner as in Example 1, except that the crosslinked polyolefin fiber DOW XLA monofilament was stretched and heat set to 5.5 times, wound and fed without being stretched.
  • the obtained knitted fabric was scoured by a conventional method in a bathtub at 90 ° C. for about 30 minutes, the knitted fabric width contracted to 38%, and a knitted fabric suitable for underwear having high stretchability was obtained.
  • the resulting knitted fabric which has no problem in handling during knitting, was a well-balanced knitted fabric. However, the knitted fabric was broken during knitting, and worm-feeding defects were found in the finished knitted fabric.
  • Table 1 shows the evaluation results of the breaking elongation, the breaking elongation after boiling water treatment, and the elongation recovery rate of the crosslinked polyolefin fibers used in Comparative Example 1-2.
  • Example 1-1 instead of the crosslinked polyolefin fiber 44dtexDOW XLA monofilament, a polyurethane elastic yarn 44dtex obtained by reacting a polyol, diisocyanate, a strong polymer and a low molecular diol (ESPA M manufactured by Toyobo KK) A knitted fabric was obtained in the same manner as in Example 1 except that was used. Yarn is easy to handle during knitting, and the resulting knitted fabric is well-balanced.However, when the obtained knitted fabric is refined in a bathtub at 90 ° C for about 30 minutes in the usual way, The knitted fabric width was shrunk only to 92%, and a knitted fabric with inferior elasticity was obtained.
  • ESA M manufactured by Toyobo KK
  • Table 1 shows the evaluation results of the elongation at break, the elongation at break after boiling water treatment, and the elongation recovery rate of the elastic fiber used in Comparative Example 13.
  • Example 11 The strength of monofilament of cross-linked polyolefin fiber 44dtex (DOW XLA) used in 1 was produced at a spinning speed of 600 m / min. In this example, the same cross-linked polyolefin was used and the spinning speed was 1000 m / min. A crosslinked polyolefin fiber having a breaking elongation of 278% was used. Further, this yarn was supplied to the knitting machine without being stretch-set. Otherwise, a knitted fabric was obtained in the same manner as in Example 11.
  • DOW XLA cross-linked polyolefin fiber 44dtex
  • Table 1 shows the evaluation results of the elongation at break, the elongation at break after boiling water treatment, and the elongation recovery rate of the elastic fiber used in Comparative Example 14.
  • the elongation rate of the composite yarn before and after heat treatment was determined from the following formula.
  • a monofilament of cross-linked polyolefin fiber 44 decistats (DOW XLA manufactured by Toyobo Co., Ltd.) is drafted 48 times between the front roller and the back roller. Was drafted 3.5 times and supplied to the front roller, and the twist coefficient was set to 3.5, and it was wound into a spinning cup under a tension of 36 g to obtain a core-sheath type composite spun yarn with 40 cotton counts.
  • the mixing ratio of the crosslinked polyolefin fiber was 8.6% by weight.
  • the spun yarn was set for 15 minutes at 70 ° C with an elongation of 3.5 times. Elongation rate of this yarn Is shown in Table 2 below.
  • Elasticity was developed by heat treatment in a series of steps of desizing, scouring, and bleaching.
  • the resulting woven fabric was extremely excellent in quality, had a high degree of whiteness, had a soft touch, and had a high-class feeling with excellent stretchability and recoverability in the background.
  • this fabric was used to sew a dress shirt, a shirt with high gloss and excellent stretchability was obtained.
  • a composite spun yarn obtained by composite spinning in the same manner as the warp yarn was used.
  • the blending ratio of cross-linked polyolefin fiber in this yarn was 10.5%.
  • the spun yarn was set at a stretch rate of 4.0 times at 70 ° C for 15 minutes. Table 1 shows the elongation before and after the treatment of this yarn.
  • Jeans pants were sewn using this fabric, and 1 part of the indigo dye was acid-decolorized using sodium hypochlorite and a sash.
  • the resulting product was extremely excellent in quality, soft and bi-directional, and comfortable to wear. In addition, it became jeans pants with a worn out appearance.
  • the yarn was covered with lOOOTZm (twisting coefficient: 6600), wound up in a stretched state, and set at 15 ° C for 15 minutes at a stretch rate of 3 times.
  • Table 2 shows the elongation ratio of this composite yarn before and after heat treatment.
  • the force of handling composite yarn equivalent to false twisted yarn was the same as that of false twisted yarn, and the knitting tension was almost the same as false twisted yarn, and no abnormal stage with almost no change in release tension was observed. .
  • a woven fabric was obtained in the same manner as in Example 2-3, except that polyurethane elastic yarn (Toyobo Espa type 765) 44 dtex was used in place of the polyolefin elastic yarn. Elongation of composite elastic yarn The rates are shown in Table 2.
  • a woven fabric was obtained in the same manner as in Example 2-1, except that the yarn was not set after the composite yarn was obtained by spinning. Table 2 shows the elongation of this yarn.
  • the elastic yarn and elastic composite yarn of the present invention are yarns that can obtain a stretchable fabric, they have poor stretchability at the time of weaving and weaving, so that troubles during weaving are avoided and a high quality fabric is obtained. Can be manufactured.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Woven Fabrics (AREA)
  • Knitting Of Fabric (AREA)

Abstract

Cette invention concerne un fil élastique qui a un allongement à la rupture de 80 à 300 % et qui, après traitement thermique, est amené à un allongement à la rupture qui n'est pas inférieur à 500 % et une récupération après allongement qui n'est pas inférieure à 50 %. On prépare ce fil en faisant durcir à la chaleur une fibre élastique de polyoléfine de type réticulée à une température supérieure ou égale à 60°C tout en allongeant la fibre élastique. On peut transformer ce fil en un tissu flexible en entrelaçant le fil pour préparer un tissu et en traitant thermiquement le tissu à une température d'environ 60 à 200°C. L'invention concerne également un fil élastique à deux composants qui a un allongement qui n'est pas supérieur à 10 % et qui, après traitement thermique, est amené à un allongement qui n'est pas inférieur à 30 %. On prépare ce fil en faisant durcir à la chaleur un fil à deux composants comprenant une fibre élastique de polyoléfine de type réticulée et une fibre non élastique à une température supérieure ou égale à 60°C tout en allongeant le fil à deux composants. On peut transformer ce fil en un tissu flexible en entrelaçant le fil pour préparer un tissu et en traitant thermiquement le tissu à une température d'environ 60 à 200°C.
PCT/JP2005/015713 2004-09-09 2005-08-30 Fil élastique ayant une excellente aptitude à être manipulé WO2006027967A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004262453A JP2006077358A (ja) 2004-09-09 2004-09-09 取り扱い性に優れた弾性複合糸
JP2004-262453 2004-09-09
JP2004-265331 2004-09-13
JP2004265331A JP2006077375A (ja) 2004-09-13 2004-09-13 取り扱い性に優れた弾性糸

Publications (1)

Publication Number Publication Date
WO2006027967A1 true WO2006027967A1 (fr) 2006-03-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105463676A (zh) * 2015-12-28 2016-04-06 广东兆天纺织科技有限公司 一种超薄、低弹、不卷口的纬编针织布及其生产工艺
WO2024172791A1 (fr) * 2023-08-29 2024-08-22 Bursa Uludağ Üni̇versi̇tesi̇ Tissu denim tissé et procédé de production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004211252A (ja) * 2003-01-07 2004-07-29 Toyobo Co Ltd 弾性複合糸およびその製造方法
JP2004211253A (ja) * 2003-01-07 2004-07-29 Toyobo Co Ltd 弾性複合紡績糸を含む伸縮性編地およびそれを用いた伸縮性衣料
JP2004211264A (ja) * 2003-01-08 2004-07-29 Toyobo Co Ltd 弾性複合紡績糸織物およびそれを用いた製品およびその製造方法
JP2004211265A (ja) * 2003-01-08 2004-07-29 Toyobo Co Ltd ストレッチ性ポリエステル系フィラメント織物及びその製造法及びそれを用いた衣料

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004211252A (ja) * 2003-01-07 2004-07-29 Toyobo Co Ltd 弾性複合糸およびその製造方法
JP2004211253A (ja) * 2003-01-07 2004-07-29 Toyobo Co Ltd 弾性複合紡績糸を含む伸縮性編地およびそれを用いた伸縮性衣料
JP2004211264A (ja) * 2003-01-08 2004-07-29 Toyobo Co Ltd 弾性複合紡績糸織物およびそれを用いた製品およびその製造方法
JP2004211265A (ja) * 2003-01-08 2004-07-29 Toyobo Co Ltd ストレッチ性ポリエステル系フィラメント織物及びその製造法及びそれを用いた衣料

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105463676A (zh) * 2015-12-28 2016-04-06 广东兆天纺织科技有限公司 一种超薄、低弹、不卷口的纬编针织布及其生产工艺
WO2024172791A1 (fr) * 2023-08-29 2024-08-22 Bursa Uludağ Üni̇versi̇tesi̇ Tissu denim tissé et procédé de production

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