JP4439944B2 - False twisted yarn, production method thereof, and woven / knitted fabric thereof - Google Patents

Description

  The present invention is a false twisted yarn capable of providing a woven or knitted fabric having good shape stability, little unevenness on the surface of the woven or knitted fabric, and having both an elegant patchy feeling, an appropriate soft feeling, and a flaky feeling, and its production It relates to a method and its woven or knitted fabric.

  Conventionally, a number of false twisted slab yarns that have been wound in multiple portions by false twisting have been proposed as processed yarns that can impart spots to the surface of a woven or knitted fabric. The false twisted slab yarn has a middle part in which the sheath yarn is wound once with respect to the core yarn and a slab part in which the sheath yarn is wound in multiple directions in the lengthwise direction of the yarn. It will be rough.

  Therefore, a method of forming a random slab at a low frequency by changing the supply amount of sheath yarn has been proposed (see, for example, Patent Document 1). As a result, the roughness of the surface of the woven or knitted fabric is greatly reduced, but the winding strength of the sheath yarn around the core yarn tends to be insufficient. It is easy to produce.

  For this reason, a method has been proposed in which, after forming a random slab at a low frequency due to fluctuations in the amount of sheath yarn supplied, a plurality of push yarns are further partially wound to improve shape stability (see, for example, Patent Document 2). . However, there are a slab portion formed by sheath yarn and a slab portion formed by pressing yarn, and the frequency of the slab portion increases as the whole false twisted yarn, and the surface of the woven or knitted fabric becomes rough.

On the other hand, a processed yarn having the appearance of various twisted yarns by a self-twist method in which SZ alternating twisted yarns having S twisted portions and Z twisted portions in the longitudinal direction of the yarns are aligned and the SZ alternating twisted yarns are brought close to each other with the apparent torque of the twisted portions. There has been proposed a method of imparting spots on the surface of a woven or knitted fabric using a material (for example, Patent Document 3). However, since the ratio of the formed twisted yarn-like parts is large and the frequency is high, the surface of the woven or knitted fabric is rough and has a hard texture.
Japanese Patent Laid-Open No. 61-102444 JP-A-8-209477 JP 2003-96634 A

  The present invention solves such problems in the prior art, and includes a twisted structure part in which the SZ alternating twist form part has an upper twist form and a crimped structure part in which the crimp form part is aligned. By forming in the longitudinal direction of the yarn, and by making each structure part a random length and forming the twist structure part at a low frequency, the shape stability is good, the unevenness of the surface of the woven or knitted fabric is small, and elegant spots It is an object of the present invention to provide a false twisted yarn, a manufacturing method thereof, and a woven or knitted fabric that can provide a woven or knitted fabric having both a feeling of softness, an appropriate soft feeling, and a feeling of softness.

The first gist of the present invention consists of at least two multifilament yarns having an SZ alternating twist form part and a crimped form part, wherein the SZ alternating twist form part has an upper twist form and the twisted structure part A false twisted yarn composed of crimped structure portions in which crimped portions are aligned with each other, each of the multifilament yarns simultaneously having an air injection time of 0.3 to 0.6 seconds, and an air stop time of 1 to 20 seconds The air swirl flow treatment was intermittently performed at a random cycle (excluding 1-2 seconds), the length of the twisted structure portion was 0.1 m or more and 0.8 m or less, and the expression frequency was 4 or less per 10 m, In the false twisted yarn, the length of the crimped portion is 1.5 m or more.

The second gist is that at least two multifilament yarns are used, and each multifilament yarn has an air injection time of 0.3 to 0.6 seconds and an air stop time of 1 to 20 seconds (excluding 1-2 seconds). The air swirl process is intermittently performed at a random cycle of 0.1 to 0.8 m to form an SZ alternating twisted part and a 1.5 m or more untwisted part, and then in the false twist twisted region at the same speed It exists in the manufacturing method of false twisted yarn which supplies and false twists.

  The third gist is a woven or knitted fabric including the false twisted yarn of the present invention.

  The present invention is a false twisted yarn that has a good form stability, little unevenness on the surface of the woven or knitted fabric, an elegant spot feeling, an appropriate soft feeling, and a flaky feeling that cannot be obtained with a conventional false twisted yarn. And its manufacturing method and its woven or knitted fabric.

  The false twisted yarn of the present invention is a false twisted yarn composed of at least two multifilament yarns having an SZ alternating twist form part and a crimped form part, and the SZ alternating twist form parts of each multifilament are It is necessary to form a crimped structure part in which the twisted structure part and the crimped form part that have been drawn together to form an upper twisted form are arranged together.

  The SZ alternating twist form part has a converging structure in which single filaments of multifilament yarns are aligned, and refers to a part in which S twist parts and Z twist parts are alternately formed. The twist structure part is the SZ alternating twist form part. The same direction twist part is said, and the part which forms the top twist form of the reverse twist direction is put together. The crimped form part is a part where the multifilament yarn is not substantially converged and has a false twisted crimp in the opened state, and the crimped structure part is a part where the crimped form parts are aligned. Say.

  In the false twisted yarn of the present invention, the twisted structure portion and the crimped structure portion are alternately formed.

  In addition, the length of the twisted structure part that imparts mottle to the woven or knitted fabric needs to be 0.1 m or more and 0.8 m or less, more preferably 0.2 m or more and 0.6 m or less. If the length is less than 0.1 m, the shape stability of the twisted structure portion is deteriorated, and the twisted structure portion is easily dislodged during weaving and the sensation is reduced. When the length exceeds 0.8 m, the twisted structure is stabilized, but when it is made into a woven or knitted fabric, the twisted structure looks like a streak and the appearance deteriorates.

  On the other hand, the length of the crimped structure portion needs to be 1.5 m or more, more preferably 2.0 m or more. When the length is less than 1.5 m, the number of twisted structures occupied in the longitudinal direction of the yarn increases, and the surface unevenness of the woven or knitted fabric becomes rough. In consideration of imparting an elegant spot feeling to the woven or knitted fabric, it is preferably 100 m or less.

  Furthermore, the twisted structure portion and the crimped structure portion are alternately formed at random, and the expression frequency of the twisted structure portion needs to be 4 or less per 10 m. If the expression frequency exceeds 4, the yarn longitudinal direction As a result, the twisted structure portion of the woven and knitted fabric becomes rough, and the surface unevenness of the woven or knitted fabric becomes rough.

  The multifilament yarn used in the present invention is not particularly limited, and thermoplastic fibers such as polyester fibers, polyacrylonitrile fibers and polyamide fibers, semi-synthetic fibers such as acetate, and regenerated fibers such as rayon may be used. Is possible. Further, the cross-sectional shape, total fineness, fineness unevenness, dyeing characteristics, etc. of individual constituent filaments are not particularly limited, and various additives may be included without departing from the object of the present invention.

  The manufacturing process of the false twisted yarn of the present invention will be described with reference to the drawings.

  The false twisted yarn of the present invention uses at least two multifilament yarns, and each of the multifilament yarns is intermittently subjected to air swirl flow treatment at the same time. It is obtained by forming a non-twisted portion of 1.5 m or more and then supplying the false twisting region at the same speed to perform false twisting.

FIG. 1 shows an example of the production process of the false twisted yarn of the present invention. Two multifilament yarns are used as supply yarns 1 and 2, and the respective supply yarns are passed through air swirl flow nozzles 5 and 6 through preliminary tension adjusting devices 3 and 4 such as a magnet tensor and a ladder guide. At this time, the air swirl flow nozzle uses a fluid ejection control device using a solenoid valve or the like, and the injection time and stop time of the two air swirl flow nozzles at the same time are also shown in the following examples by a computer or the like. It controls to a period and forms 0.1Z or more and 0.8m or less SZ alternate twist part, and 1.5m or more untwisted part.

  Next, the yarns are aligned to one by an alignment guide 7 provided immediately before the yarn supply roller 8, and then supplied to the false twisting region through the yarn supply roller 8. The supply yarns 1 and 2 are twisted in an aligned state, heat set in the region of the first heater (contact heater) 9, and then untwisted immediately after passing through the false twist spindle 10. Subsequently, the yarn passes through the first take-up roller 11 and is taken up by the take-up portion 14 to be a false twisted yarn of the present invention.

  In order to reduce the apparent torque of the false twisted yarn of the present invention, a heat setting process is performed by the second heater (non-contact heater) 12 between the first take-up roller 11 and the second take-up roller 13. Also good.

  The woven or knitted fabric containing the false twisted yarn of the present invention may be determined by determining the mixing ratio and the woven or knitted fabric structure within a range in which the desired texture and product appearance can be obtained, and consists of the false twisted yarn of the present invention alone. A woven or knitted fabric, or a knitted or woven fabric using the false twisted yarn of the present invention as a part of the woven or knitted fabric may be used.

Moreover, you may use the twisted yarn containing the false twisted yarn of this invention for the woven / knitted fabric. The twisted yarn is a twisted yarn of the false twisted yarn of the present invention, a twisted yarn of the false twisted yarn of the present invention, or a twisted yarn of the false twisted yarn of the present invention and another fiber. Therefore, it is possible to have the characteristics of other fibers together with the characteristics of the false twisted yarn of the present invention.

  For example, the false twisted yarn of the present invention and other fibers such as natural fiber, recycled fiber, semi-synthetic fiber, thermoplastic fiber, etc. are twisted together, so that the original characteristics of the other fiber, For example, textures such as a glossy feeling, a cool feeling, a sharp feeling, and a wet feeling can be imparted to the woven or knitted fabric. In addition, it is possible to obtain a woven or knitted fabric rich in a sense of elasticity due to the twisting effect of the twisting.

  The other fibers used for the above-mentioned twisting are, for example, natural fibers such as cotton, hemp, and silk, regenerated fibers such as rayon, semi-synthetic fibers such as acetate, and thermoplastic fibers such as polyester fibers. In addition, the cross-sectional shape of the single fiber constituting each fiber is not particularly limited, and the cross-sectional shape of the yarn such as chrysanthemum, circular, flat, Y-shaped is taken into consideration in consideration of the texture, gloss, etc. of the resulting woven or knitted fabric The single fiber fineness, dyeing characteristics and the like are not particularly limited.

  The twist direction and the number of twists of the twisted yarn of the present invention are not particularly limited, and the number of constituent yarns, the mixing ratio of the false twisted yarn of the present invention, the number of twists, etc. are within the range where the desired texture and the appearance of the woven or knitted fabric can be obtained. What is necessary is just to set suitably.

  Hereinafter, the present invention will be specifically described by way of examples. Each physical property was determined by the following method.

(1) An initial load of 3.6 × 10 ⁻³ g / dtex was applied to a 1 m long yarn of the twisted structure portion and the crimped structure portion, and the length of each structure portion was measured at 10 points visually. .

(2) An initial load of 3.6 × 10 ⁻³ g / dtex is applied to a yarn with an expression frequency of 1 m, and the number of times of expression of the twisted structure portion with a measurement length of 10 m in an arbitrary portion is measured at 10 points, and the average value is obtained. It was.

(3) Woven / knitted fabric evaluation The obtained false twisted yarn or twisted yarn was knitted and woven and evaluated by handling and visual judgment.

A polyester multifilament drawn yarn (110 dtex / 48 F) is supplied as supply yarns 1 and 2 to the preliminary tension adjusting devices 3 and 4, and the air pressure of the air swirl flow nozzles 5 and 6 is set to 0. 0 using the device shown in FIG. Air processing was performed at a random cycle of 3 MPa, an air injection time of 0.3 to 0.5 seconds, and an air stop time of 1.0 to 6.0 seconds using a fluid injection control device (not shown). The length of the SZ alternating twisted portion of the yarn after air processing is 0.4 to 0.5 m, and the length of the untwisted portion is alternately in the range of 2.8 to 8.5 m. there were. Next, each yarn is aligned by the alignment guide 7 and supplied from the yarn supply roller 8 to the false twist twist region, and the processing speed is 100 m / min, the false twist overfeed rate (hereinafter abbreviated as OF) 2 %, False twisting temperature of 220 ° C. (temperature of the first heater 9), false twisting number of 2000 T / m (Z twist), winding through the first take-up roller 11, and false twisting yarn of the present invention Got.

  The twisted structure portion of the obtained false twisted yarn has a length of 0.4 to 0.5 m, and the crimped structure portion has a length of 2.8 to 8.5 m alternately and randomly formed. The frequency of expression of the twisted structure was 2.2 times per 10 m.

  Using the obtained false twisted yarn, a woven fabric (warp density of 10.56 wings / cm, weft density of 90 yarns / 2.54 cm, satin structure) was prepared, and after scouring by a conventional method, a dyeing temperature of 130 ° C. and a dyeing time of 30 It dye | stained with the disperse dye on the conditions of minutes. The obtained woven fabric had little unevenness on the surface of the woven or knitted fabric, and had both an elegant spot feeling, an appropriate soft feeling, and a flaming feeling.

Triacetate multifilament yarn (110 dtex / 26 F) is supplied as supply yarns 1 and 2 to the preliminary tension adjusting devices 3 and 4, and the air pressure of the air swirl nozzles 5 and 6 is set to 0.1 MPa using the device shown in FIG. Then, air processing was performed at a random cycle of 0.4 to 0.6 seconds for the air injection time and 12 to 20 seconds for the air stop time using a fluid injection control device (not shown). The length of the SZ alternating twisted portion of the yarn after air processing is 0.4 to 0.5 m, and the length of the untwisted portion is alternately in the range of 14.8 to 21.7 m. there were.

  Next, each yarn is aligned by the alignment guide 7 and supplied from the yarn supply roller 8 to the false twisting region. The processing speed is 80 m / min, the false twist OF-4%, and the false twist temperature is 160 ° C. Temperature of the first heater 9), false twisting with a false twist number of 1600 T / m (Z twist), and between the first take-up roller 11 and the second take-up roller 13, OF 4%, heater temperature 160 ° C. (second heater No. 12) was heat set and wound up to obtain false twisted yarn of the present invention.

  The length of the twisted structure portion of the obtained false twisted yarn is 0.4 to 0.5 m, and the length of the crimped structure portion is alternately formed in a random length in the range of 14.8 to 21.7 m. The frequency of expression of the twisted structure portion was 0.6 times per 10 m.

  Next, a twisted yarn was prepared from the obtained false twisted yarn with a twist number of 300 T / m (Z twist direction). A woven fabric (warp density of 10.56 / cm, weft density of 100 / 2.54 cm, satin structure) is prepared from the obtained twisted yarn, and after scouring by a conventional method, dispersed under conditions of a dyeing temperature of 120 ° C. and a dyeing time of 30 minutes. Dyeing was performed with a dye. The resulting woven fabric had an appropriate harshness, had less unevenness on the surface of the woven or knitted fabric, and had both an elegant spot feeling, an appropriate soft feeling, and a flaky feeling at a low frequency.

(Comparative Example 1)
Polyester multifilament drawn yarn (110 dtex / 48F) is supplied as supply yarns 1 and 2 to the preliminary tension adjusting devices 3 and 4 respectively, and the air pressure of the air swirl nozzles 5 and 6 is set to 0 using the device shown in FIG. Air processing was performed with a random period of 0.3 to 0.5 seconds for each of the air injection time and stop time using a .3 MPa fluid injection control device (not shown). The length of the SZ alternating twisted portion of the yarn after air processing is 0.4 to 0.8 m, and the length of the untwisted portion is alternately in the range of 0.2 to 0.3 m. there were.

  Next, each yarn is aligned by the alignment guide 7 and supplied from the yarn supply roller 8 to the false twisting region, the processing speed is 100 m / min, false twist OF 2%, false twist temperature 220 ° C., false twist. A false twisting process of several 2,000 T / m (Z twist) was performed, and the film was wound up through the first take-up roller 11 to obtain the false twisted yarn of the present invention.

  The length of the twisted structure part of the obtained false twisted yarn is 0.4 to 0.8 m, the length of the crimped structure part is a random length alternately in the range of 0.2 to 0.3 m, The expression frequency of the twisted structure portion was 12.9 times per 10 m.

  Using the obtained false twisted yarn, a fabric was prepared under the same conditions as in Example 1, and after scouring by a conventional method, dyeing was performed under the same conditions as in Example 1. The surface change was rough, and there were few crimped structures, and the soft feeling and squeaky feeling were insufficient.

It is an example figure of the manufacturing method of the false twisted yarn of this invention.

Explanation of symbols

1, 2 Supply yarn 3, 4 Pre-tension adjusting device 5, 6 Air swirl flow nozzle 7 Alignment guide 8 Thread supply roller 9 First heater 10 False twisting spindle 11 First take-up roller 12 Second heater 13 Second take-up roller 14 Winding part

Claims (3)

It is composed of at least two multifilament yarns having an SZ alternating twist form part and a crimp form part, and the SZ alternating twist form part is twisted together and the crimp form part is aligned with each other. False twisted yarn consisting of a crimped structure, each having an air injection time of 0.3 to 0.6 seconds and an air stop time of 1 to 20 seconds (excluding 1-2 seconds) simultaneously on each multifilament yarn The length of the twisted structure portion subjected to air swirl treatment intermittently in a random cycle is 0.1 m or more and 0.8 m or less, and the expression frequency is 4 or less per 10 m, and the length of the crimped form portion is 1 False twisted yarn that is 5 m or longer. At least two multifilament yarns are used, and each multifilament yarn is simultaneously swirled with a random cycle of air injection time of 0.3 to 0.6 seconds and air stop time of 1 to 20 seconds (excluding 1-2 seconds). Flow treatment is intermittently performed to form an SZ alternating twisted portion of 0.1 m or more and 0.8 m or less and a non-twisted portion of 1.5 m or more, and then supplied to the false twist twisted region at the same speed to perform false twist processing. Manufacturing method of false twisted yarn to be applied. A woven or knitted fabric comprising the false twisted yarn according to claim 1.

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