JP5352618B2 - Manufacturing method of long and short composite yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a long/short composite yarn with excellent dry touch as well as good feeling in which a synthetic fiber multifilament and an animal hair short fiber group are well integrated and varies in a length direction of threads, and to provide a producing method thereof. <P>SOLUTION: A long/short composite yarn comprises a synthetic fiber multifilament and an animal hair short fiber group that are twisted with each other. The long/short composite fiber comprises a part in which the synthetic fiber multifilament is opened and mixed with the animal hair short fiber group and a part in which the synthetic fiber multifilament is not mixed with the animal hair short fiber group but bundled. This yarn is obtained by the steps of: feeding an animal hair short fiber bundle (2) to draft zones (7,8,9) of a ring frame (10); feeding a synthetic fiber multifilament (1) to a front roller (9) of the ring frame; when both fibers are being combined just after the front roller and being twisted, tensing the synthetic fiber multifilament in advance and then relaxing it by over feed and fluid entangling (5) with the filament being relaxed; and supplying to the front roller (9) after forming an open part and a bundled part in a length direction of the fiber. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

The present invention relates to a method for producing a long fiber / short fiber composite yarn by ring spinning.

  Conventionally, a composite yarn obtained by twisting a synthetic fiber multifilament and a short fiber (staple) group is known as a long / short composite yarn (Non-Patent Document 1). Long and short composite yarns can take advantage of long fibers (filaments) and short fibers (staples). For example, when polyester multifilament is used as the long fiber and wool is used as the short fiber (staple), a thin and easy-to-dry yarn can be made. Specifically, core yarn (core-sheath structure, mainly polyurethane in core, short fibers are arranged in the sheath), fine-spinning / combustion method (spun yarn structure), fiber opening method (homogeneous mixed fiber structure), different speed precision There is a spinning flame method (core-sheath two-layer structure). Among these, the fiber opening method is a method in which a multifilament is electrically opened and twisted together with a short fiber group, and is proposed in Patent Documents 1 to 4.

  Patent Document 1 discloses disposing multifilaments on the outside of the composite yarn by an electric fiber opening method, and Patent Document 2 discloses twisting the multifilament and the short fiber group in a spiral shape by the electric fiber opening method. In Patent Document 3, it is disclosed that multifilaments and short fiber groups are made into a uniform mixed layer by an electric opening method, collected in a core, and the surroundings are surrounded by the short fiber groups and twisted. In Patent Document 4, an electric opening method is used. It is disclosed that the multifilament and the short fiber group are uniformly mixed. However, all of Patent Documents 1 to 4 are based on the electrospreading method, and there is a problem that there is no change along the length direction of the yarn, and the texture and the feeling of “shattering” are lacking.

Paragraph [0019] of JP-A-9-176828 JP 2004-169223 A JP 2004-176218 A JP 2006-179061 A

Edited by Tatsuya Motomiya et al., “Encyclopedia of Textiles”, Maruzen Co., Ltd., March 25, 2002, p. 748

In order to solve the above-mentioned conventional problems, the present invention has good integrity between the synthetic fiber multifilament and the animal hair short fiber group, has a change along the length direction of the yarn, has a good texture, and “shatter” Provided is a method for producing a long and short composite yarn having a high feeling.

The method for producing a long / short composite yarn according to the present invention is a method for producing a long / short composite yarn obtained by twisting a synthetic fiber multifilament and a group of animal short fibers, and supplying an animal hair short fiber bundle to a draft zone of a ring spinning machine. Then, the synthetic fiber multifilament is supplied to the front roller of the ring spinning machine, and when the two fibers are combined and twisted immediately after the front roller, the synthetic fiber multifilament is pulled and tensioned in advance, and then overfeed. Then, the fluid is entangled in the relaxed state, and after forming the spread part and the converging part in the length direction of the yarn, the synthetic fiber multifilament is opened and the animal short hair is fed to the front roller. A portion mixed with the fiber group and the synthetic fiber multifilament converge to obtain a long / short composite yarn including a portion unmixed with the animal hair short fiber group .

  The present invention is a long and short composite yarn obtained by twisting a synthetic fiber multifilament and an animal hair short fiber group, wherein the synthetic fiber multifilament is opened in the longitudinal direction and mixed with the animal hair short fiber group, Synthetic fiber multifilaments converge and contain parts that are not mixed with animal hair short fiber groups, so that the integrity of the synthetic fiber multifilaments and animal hair short fiber groups is good and changes along the length of the yarn. It is possible to provide long and short composite yarns that have a good texture and a high “feeling” and are suitable for summer clothing or thin uniforms.

FIG. 1 is a schematic explanatory view showing a production process of a long / short composite yarn in one embodiment of the present invention. FIG. 2 is a schematic explanatory view showing a method of opening a synthetic fiber multifilament in one embodiment of the present invention. 3A-B are schematic cross-sectional views of long and short composite yarns in one embodiment of the present invention.

  The long / short composite yarn of the present invention is a long / short composite yarn obtained by twisting a synthetic fiber multifilament and an animal hair short fiber group. Synthetic fiber multifilaments include polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, copolymer polyester containing 90 mol% or more of ethylene terephthalate, copolymer polyester containing 90 mol% or more of butylene terephthalate, and 90 mol% of trimethylene terephthalate. A multifilament made of the copolyester contained above is preferred. A preferred configuration of the multifilament is a single fiber fineness of 0.1 to 4 dtex (decitex), a constitutional number of 10 to 100, and a total fineness of 1 to 400 dtex. The multifilament may be raw yarn or false twisted yarn.

  Preferred animal hair short fibers are wool, cashmere, mohair, goat hair, camel, camel, guanaco, llama, alpaca, vicuña, angora, mink, fox and the like. Particularly preferred is wool.

  The long and short composite yarn of the present invention includes a portion where the synthetic fiber multifilament is opened and mixed with the animal hair short fiber group, and a portion where the synthetic fiber multifilament is focused and the animal hair short fiber group is not mixed. . As a result, the synthetic fiber multifilament and the animal hair short fiber group have good unity, have changes along the length of the yarn, have a good texture, and have a high feeling of shaving, and are suitable for summer clothing. It can be a composite yarn. The opening and bundling of the synthetic fiber multifilament is preferably formed by fluid entanglement in an overfeed state on the synthetic fiber multifilament before twisting. Examples of the fluid entanglement include using an interlace nozzle, a Taslan nozzle whose main purpose is to provide a loop, and the like, but an interlace nozzle is preferably used in order to strengthen the entanglement between the short fiber group and the multifilament yarn. It is preferable to use pressurized air as the fluid. The air pressure is arbitrarily set based on the material used, the processing speed, the entanglement level, and the like. Preferably it is 50-200 kPa.

  In the present invention, a combination of polyethylene terephthalate multifilament and wool is particularly preferable. Good integration as a yarn, changes along the length of the yarn, good texture, high “sharsh” feeling, and is suitable for summer clothing.

  The mixing ratio of the synthetic fiber multifilament and the animal hair short fiber group is preferably in the range of 20 to 35% by weight for the synthetic fiber multifilament and 65 to 80% by weight for the animal hair short fiber group. More preferably, the synthetic fiber multifilament is in the range of 24 to 30% by weight and the animal hair short fiber group is in the range of 70 to 76% by weight.

  Next, a manufacturing method will be described. First, animal hair short fiber bundles (top: fiber bundles in which raw hairs are opened and arranged in one direction) are supplied to the draft zone of the ring spinning machine, drafted, and discharged from the front roller. The synthetic fiber multifilament is supplied to the front roller of the ring spinning machine, and both the short animal hair fiber group and the synthetic fiber multifilament are combined immediately after the front roller and twisted. At this time, the synthetic fiber multifilament is pulled and tensioned in advance, then over-fed and loosened, fluid entangled in a relaxed state, and after forming a spread portion and a converging portion, it is supplied to the front roller. Thereby, the long and short composite yarn of the present invention is obtained.

  This will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing a production process of a long / short composite yarn in one embodiment of the present invention. The animal hair short fiber bundle is drawn out from the wound body 2 of the animal hair short fiber bundle, supplied to the back roller 7 of the ring spinning machine 10, drafted by the draft apron 8, and discharged from the front roller 9. The synthetic fiber multifilament 1a is pulled out from the wound body 1, and the synthetic fiber multifilament 1a is pulled and tensioned between the first tension roller 3 and the second tension roller 4. Next, the second tension roller 4 and the front roller 9 are overfed and loosened. In the loosened state, the fluid is entangled by being supplied to the fluid entanglement device 5 to form an opening portion 1b and a converging portion 1c to obtain an entangled yarn 1d. Pressurized air 6 is supplied to the fluid entangling device. The entangled yarn 1d is supplied to the front roller 9, where it merges with the animal hair short fiber group and is united and twisted immediately after the front roller 9. After the synthetic fiber multifilament and the animal hair short fiber group merge, they pass through the snell guide 12 and are actually twisted while being wound up on the spinning cup 13. 11 is a twisted yarn. Thereby, the long and short composite yarn of the present invention is obtained.

  The speed relationship among the first tension roller 3, the second tension roller 4, and the front roller 9 is that when the speed of the front roller 9 is 1, the speed of the first tension roller 3 is 1.03 to 1.09. The speed of the tension roller 4 is preferably 1.10 to 1.30. In this way, the synthetic fiber multifilament 1a is pulled and tensioned between the first tension roller 3 and the second tension roller 4, and is overfeeded and loosened between the second tension roller 4 and the front roller 9. . The overfeed rate is preferably 10 to 30% based on the speed of the front roller.

  FIG. 2 is a schematic explanatory view showing a method of opening a synthetic fiber multifilament in one embodiment of the present invention. In a state where the synthetic fiber multifilament 1a is loosened, it is supplied to the fluid entanglement device 5 and pressurized air 6 is supplied thereto to form the spread portion 1b and the converging portion 1c to obtain the entangled yarn 1d. Since the converging part 1c is formed in the both ends of the opening part 1b, if it pays attention only to the opening part 1b, the opening part will exist intermittently. The number of confounding portions 1c is preferably in the range of 4-18 / m. As a method for measuring the degree of entanglement, the number of entanglements is measured by floating or immersing a filament yarn on water (water immersion method).

  3A-B are schematic cross-sectional views of long and short composite yarns in one embodiment of the present invention. FIG. 3A shows a portion 23 in which the synthetic fiber multifilament 21 is opened and mixed with the animal hair short fiber group 22. FIG. 3B shows a portion 24 in which the synthetic fiber multifilaments 21 converge and are not mixed with the animal hair short fiber group 22.

  Hereinafter, more specific description will be made using examples. In addition, this invention is not limited to the following Example.

The measurement methods in Examples and Comparative Examples of the present invention were as follows.
(1) Strength and elongation of woven fabric Measured according to JIS L 10968.8.12.1a (Method A).
(2) Number of entangled synthetic fiber multifilaments The number of entangled portions having a length of 1 mm or more was measured by a water immersion method and converted to the number per 1 m. Ten multifilament yarns were measured and indicated by their average value.
(3) Observation of long / short composite yarn The cross section and side surface of the long / short composite yarn were observed with a light microscope (500 times magnification) for the mixed portion and the non-mixed portion of the synthetic fiber multifilament and the wool fiber group.
(4) Texture The tension, bending, shear, etc. are measured with a test machine manufactured by Kato Tech Co., Ltd., and these results are processed mathematically to create a texture of “sharp”, “koshi”, “bulge”, and “beam”. Each item was quantitatively evaluated and displayed as a KES value. The larger each value, the more effective it is.
(5) Overall judgment value of texture: THV
THV is an abbreviation for Total hand value, and is an overall judgment value of the texture obtained by mathematical processing of the KES values of “sharp”, “koshi”, “bulge”, and “beam”. The evaluation is as follows.
THV 5: Excellent (very good)
THV 4: Good
THV 3: average
THV 2: below average
THV 1: Very bad
THV 0: Not applicable including out-of-use (6) Number of fluff The number of fluff of long and short composite yarns was measured by F-INDEX TESTER manufactured by Shikibo.

Example 1
A fiber bundle (0.179 g / m, metric number 5.6) of 100% by weight of merino wool is pulled out from the wound yarn body 2 shown in FIG. 1, supplied to the back roller 7 of the ring spinning machine 10, and drafted with a draft apron 8 Then, a fiber bundle corresponding to a 60th (meter count) single yarn was spun from the front roller 9.

  On the other hand, when the polyethylene terephthalate multifilament (total fineness: 56 dtex, number of filaments: 24) is pulled out from the wound body 1 shown in FIG. 1 and the speed of the front roller 9 is 1, the speed of the first tension roller 3 is 1. .06, the speed of the second tension roller 4 is 1.21, the tension between the first tension roller 3 and the second tension roller 4 is increased, and the tension between the second tension roller 4 and the front roller 9 is increased. Overfeed and loosen. The overfeed rate (OF rate) was 21% based on the speed of the front roller. In this way, the synthetic fiber multifilament was loosened and supplied to the fluid entangler 5 to be entangled. Thereby, the spread part 1b and the converging part 1c were formed, and the entangled yarn 1d was obtained. “AT-501HD III” manufactured by Aiki Riotech Co., Ltd. was used as the fluid entangler, and pressurized air was supplied at 130 kPa. The number of entanglements after fluid entanglement was 12 / m.

  The obtained entangled yarn 1d was supplied to the front roller 9, where it was merged with the wool fiber group and united and twisted. After the synthetic fiber multifilament and the animal hair short fiber group merged, they passed through the snell guide 12, and were actually twisted while being wound up on the fine spinning cup 13. Thereby, a long and short composite yarn was obtained.

Using this long and short composite yarn, a finished 1/2 twill fabric having a finished number of warp yarns of 446 yarns / 10 cm, a weft yarn number of 332 yarns / 10 cm, and a basis weight of 143.6 g / m ² was obtained. This fabric is for summer or thin uniforms.

The characteristics of the long and short composite yarns and the woven fabric of this example were as follows.
(1) Strength and elongation of woven fabric The strength was vertical 577N, horizontal 438N, and the elongation was vertical 53.1%, horizontal 47.8%.
(2) Observation of long / short composite yarn The cross section and side surface of the long / short composite yarn were observed with an optical microscope (500 times magnification). The synthetic fiber multifilament and the wool fiber group have a mixed portion and an unmixed portion arranged in the length direction of the yarn, and the obtained long and short composite yarn is a mixed portion 23 shown in FIG. 3A and an unmixed portion shown in FIG. 3B. The portion 24 was repeated in the length direction.
(3) Texture “Kuri” had a KES value of 4.34 and “THV” of 2.67.
(4) Number of fluff The number of fluff was measured. The number of fluffs of 1 mm or more and less than 3 mm was 364/10 m, the number of fluffs of 3 mm or more and less than 5 mm was 34/10 m, and the number of fluffs of 5 mm or more was 6/10 m.
(5) Comprehensive evaluation The woven fabric of this example has good integrity of the synthetic fiber multifilament and the animal hair short fiber group, has a change along the length direction of the yarn, has a good texture, “Koshi” and “Hari” have high KES values, high strength, and are suitable for summer clothing or thin uniforms.

(Example 2)
In Example 1, it carried out similarly to Example 1 except having made the overfeed rate (OF rate) between the 2nd tension roller 4 and the front roller 9 into 16%. The degree of entanglement after fluid entanglement was 7 / m.

The characteristics of the long and short composite yarns and the woven fabric of this example were as follows.
(1) Strength and elongation of the woven fabric The strength was 595N and width 446N, and the elongation was 54.6% and 49.2%.
(2) Observation of long / short composite yarn The cross section and side surface of the long / short composite yarn were observed with an optical microscope (500 times magnification). In the synthetic fiber multifilament and the wool fiber group, the mixed portion and the non-mixed portion are arranged in the length direction of the yarn, and the number thereof is the same as the entanglement degree. Further, in the obtained long and short composite yarn, the mixed portion 23 shown in FIG. 3A and the non-mixed portion 24 shown in FIG. 3B were repeated in the length direction.
(3) Texture The “ESC” KES value was 4.53, and the “THV” was 2.80.
(4) Number of fluff The number of fluff was measured. The number of fluffs of 1 mm or more and less than 3 mm was 343/10 m, the number of fluffs of 3 mm or more and less than 5 mm was 34/10 m, and the number of fluffs of 5 mm or more was 6/10 m.
(5) Comprehensive evaluation The woven fabric of this example has good integrity of the synthetic fiber multifilament and the animal hair short fiber group, has a change along the length direction of the yarn, has a good texture, and feels “shattered”. , High strength, and long and short composite yarn suitable for summer clothing or thin uniforms. In particular, the anti-dyed product has a better feel than the KES value, and has a waist, making it a summery fabric.

(Comparative Example 1)
In Example 1, long and short composite yarns and woven fabrics were produced under the same conditions as in Example 1 except that a fluid entangler was not used. It is a spinning spinning twist. The number of entanglements is 1 / m. The characteristics of the long and short composite yarn and the fabric of Comparative Example 1 were as follows.
(1) Strength and elongation of woven fabric The strength was vertical 481N and horizontal 372N, and the elongation was vertical 38.6% and horizontal 34.2%.
(2) Observation of long / short composite yarn The cross section and side surface of the long / short composite yarn were observed with an optical microscope (500 times magnification). The synthetic fiber multifilament and the wool fiber group were unmixed and swirled.
(3) Texture The “ESC” KES value was 2.27, and the “THV” was 2.14.
(4) Number of fluff The number of fluff was measured. The number of fluffs of 1 mm or more and less than 3 mm was 402/10 m, the number of fluffs of 3 mm or more and less than 5 mm was 45/10 m, and the number of fluffs of 5 mm or more was 9/10 m.
(5) Comprehensive evaluation The fabric of this comparative example is poor in unity between the synthetic fiber multifilament and the animal hair short fiber group, and the strength is low, so that it is possible to create a good summer clothing or thin uniform compared to Examples 1-2. There wasn't.

(Comparative Example 2)
In Example 1, long and short composite yarns and woven fabrics were produced under the same conditions as in Example 1 except that electrodes were arranged instead of the fluid entanglement device and -3000 V was applied to open the multifilament. The number of confounding is zero. The characteristics of the long / short composite yarn and the fabric of Comparative Example 2 were as follows.
(1) Strength and elongation of woven fabric The strength was vertical 520N and horizontal 404N, and the elongation was vertical 48.3% and horizontal 40.7%.
(2) Observation of long / short composite yarn The cross section and side surface of the long / short composite yarn were observed with an optical microscope (500 times magnification). The synthetic fiber multifilament and the wool fiber group were mixed in a dispersed state.
(3) Texture The “ESC” KES value was 2.49, and the “THV” was 2.34.
(4) Number of fluff The number of fluff was measured. The number of fluffs of 1 mm or more and less than 3 mm was 241/10 m, the number of fluffs of 3 mm or more and less than 5 mm was 22/10 m, and the number of fluffs of 5 mm or more was 3/10 m.
(5) Comprehensive evaluation The fabric of this comparative example is poor in unity between the synthetic fiber multifilament and the animal hair short fiber group, and the strength is low, so that it is possible to create a good summer clothing or thin uniform compared to Examples 1-2. There wasn't.

  The above Examples 1-2 and Comparative Examples 1-2 are summarized as shown in Table 1 below.

  As described above, the example product of the present invention has good integrity between the synthetic fiber multifilament and the animal hair short fiber group, has a change along the length direction of the yarn, has a good texture, and feels “shattered”. It was confirmed that it was a long and short composite yarn suitable for summer clothing or thin uniforms.

  The long and short composite yarn of the present invention is suitable for summer clothing or thin uniforms.

DESCRIPTION OF SYMBOLS 1 Synthetic fiber multifilament wound body 1a Synthetic fiber multifilament 1b Same opening part 1c Same converging part 1d Same entanglement thread 2 Animal hair short fiber bundle winding body 3 1st tension roller 4 2nd tension roller 5 Fluid entanglement device 6 Pressure air 7 Back roller 8 Draft apron 9 Front roller 10 Ring spinning machine 11 Twist yarn 12 Snell guide 13 Spinning cup 21 Synthetic fiber multifilament 22 Animal hair short fiber group 23 Mixing part of synthetic fiber multifilament and animal hair short fiber group 24 Non-mixed part of synthetic fiber multifilament and animal hair short fiber group

Claims (5)

A method for producing a long / short composite yarn obtained by twisting synthetic fiber multifilament and animal short fiber group,
When the animal hair short fiber bundle is supplied to the draft zone of the ring spinning machine, the synthetic fiber multifilament is supplied to the front roller of the ring spinning machine, and when both fibers are combined and twisted immediately after the front roller,
The synthetic fiber multifilament is pulled and tensioned in advance, then loosened by overfeeding, fluid entangled in the relaxed state, and after forming a spread portion and a converging portion in the length direction of the yarn, it is supplied to the front roller By
The synthetic fiber multifilament is opened and mixed with the animal hair short fiber group, and the synthetic fiber multifilament is converged to obtain a long and short composite yarn including an unmixed part with the animal hair short fiber group. A method for producing a long and short composite yarn. The method for producing a long / short composite yarn according to claim 1 , wherein the overfeed rate is 10 to 30% based on the speed of the front roller. The method for producing long and short composite yarns according to claim 1 or 2 , wherein the opening portion and the converging portion of the synthetic fiber multifilament are in the range of 4 to 18 pieces / m.   The method for producing a long / short composite yarn according to any one of claims 1 to 3, wherein the synthetic fiber multifilament is a polyester multifilament, and the animal hair short fiber group is a wool fiber group.   The mixing ratio of the synthetic fiber multifilament and the animal hair short fiber group is 20 to 35% by weight of the synthetic fiber multifilament and 65 to 80% by weight of the animal hair short fiber group. The manufacturing method of the long-short composite yarn of any one of Claims 1.

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