JPS5842294B2 - Manufacturing method of special raised yarn using multifilament yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a special raised yarn in which fluff and nep are simultaneously formed in a multifilament yarn.

Although many methods have been proposed to form neps and slabs from continuous filament yarns such as thermoplastic synthetic fibers by applying yarn characteristics such as fluid treatment, abrasion, false twisting techniques, or differential heat shrinkage. However, there are very few that have been successfully put into practical use today.

Most of the reasons for this are not due to a lack of novelty in the appearance or texture of the nep yarn or slub yarn, but are related to production efficiency and quality stability.

In view of the above circumstances, the inventors of the present invention have conducted extensive research and have found the following: (1) Bringing a thermoplastic synthetic fiber multifilament yarn into contact with a rotating rough surface under specific conditions.

(2) Appropriate vibrations are applied to the supplied yarn immediately before and/or immediately after the tracheal body.

The present invention was achieved by discovering that the synergistic effect of these manufacturing factors results in a more spun-like appearance and texture, as well as stabilization of quality and marked improvement in production efficiency.

The present invention can be easily implemented using, for example, a modified winder as shown in FIG.

In the figure, a multifilament yarn 1 passes through a feed roller 2, guides 3, 3', a pibreation device 4 that actively rotates in a direction perpendicular to the direction of travel of the yarn 1, and a raised body 5. You will be led to the processing department.

The multifilament yarn 1 processed in the napping section passes through a telly roller 6, is traversed by a traverse guide 7, and is wound onto a paper tube 9 by a winder 8.

FIG. 2 is an enlarged view of the raised part of FIG. 1.

Here, a grindstone roller is used as the rough surface body 5, and a piano wire is used as the member 4' of the pipe lenition device 40, and the pipe lenition device is fixed to the grindstone roller.

Therefore, the piano wire rotates together with the grindstone roller, but since the piano wire is made of a relatively flexible material, when a certain tension is reached, the thread separates from the piano wire, causing periodic vibrations to the thread. It will be done.

As a pipe regnition device, it may be separated from the grinding wheel roller and driven separately.To make the action more effective, two or more piano wires may be installed, or one or two or more wires may be installed just before and after the rough surface. equipment may be installed.

Further, a pipe lenition device other than this embodiment can also be used.

Next, the manufacturing factor 1 of the present invention will be described with reference to Table 1.

The method of raising yarn by bringing it into contact with a rotating tracheal body has been practiced for a long time.
Conventionally, various studies have been made regarding the yarn speed and the circumferential speed ratio of the trachea, the contact length between the trachea and the yarn, the contact angle, the processing tension, etc.

However, as a result of research into various processing conditions, yarn composition, etc., in order to establish a technology that imparts not only fluff but also nep, the inventors found that the most important factor for achieving this purpose was the yarn It was found that there is a relationship between the fineness of the yarn, the number of filaments, the strength of the single yarn, and the processing tension.

In other words, the total denier of the supplied yarn is D1, the total number of filaments in the supplied yarn is expressed as F1, the average single yarn strength of the supplied yarn (me 01, the yarn tension just before rubbing (me) T1, the yarn tension just after rubbing (me) It was discovered that when (1) and (21) are satisfied as T2, production efficiency and quality stability can be significantly improved.

To conclude, for example, even if equation (1) is satisfied, (
2) If T2 in the formula is 0.7 G (1+; 7 seconds) or less, the yarn may wrap around the tracheal surface and break, or the number of nep or slabs will be small (Experimental boiling 2), or if T2 is 3 G (1+:
m) In the above cases, fiber damage of the yarn occurs, and processability such as yarn breakage decreases (Jikkenya 3).

Furthermore, even if the formula (() is satisfied, if T2/T1 is 2.5 or more, it becomes difficult to adjust the tension, etc., and the occurrence of neps and unevenness on the slab increases, resulting in a lack of quality stability (experimental A5).

Furthermore, the present inventors fabricated yarns under processing conditions that satisfied these conditions (Experiment & 1゜4.6, 7, 8).
) As a result of weaving and weaving and observing, favorable results were obtained in terms of texture, production efficiency, and quality stability, but the size of the neps was too uniform, so the appearance was poor compared to conventionally produced nep yarns. It was found that the fancy effect, which is one of the causes of upper nap yarns, tends to be slightly inferior.

This drawback can be overcome by the second manufacturing factor of the invention, that is, by applying vibration to the yarn immediately before and/or immediately after the corpuscle.

That is, although we have investigated the various processing conditions and yarn compositions mentioned above, the problem cannot be solved depending on these factors.

In addition, due to the vibration effect, it was possible to further improve the production efficiency and quality stabilization.

This is clear from Table 2.

That is, the yarn nep obtained under the conditions shown in Table 1 exhibits a substantially uniform shape of approximately 0.5 to 1.5 mm in width and 1 to 3 mm in length, whereas the nep shown in Table 2 In other words, yarns subjected to vibrations of 400 to 1300 times/min have a width of 0.3 to 2.5 length, and various sizes of neps of 0.5 to 6 stages, or slub-like yarns for larger ones. A fancy appearance with a mixture of colors was obtained.

In addition, there was no periodicity in the neps occurring in the fabric, and no differences in appearance were observed within each weft tube or between each wire tube.

Furthermore, the thread breakage during processing was θ~2 times/106m, which was improved compared to the results shown in Table 1.

Considering these reasons, generally speaking, when a yarn is brought into contact with a rotating tracheal surface, the cut fluffs and neps are formed in the longitudinal direction of the yarn,
In other words, there are two types: one that occurs against the direction of yarn travel, and the other that occurs due to the rotation of the trachea. Normally, these effects are thought to occur synergistically at the same time, but the vibration effect on the yarn is Initial nep formation is caused by changes in length and shortness of time during which fuzz and naps (nep) occur mainly in the longitudinal direction of the yarn, that is, the contact time between the yarn and the rough surface. This rubbing in the longitudinal direction is more random than normal rubbing, and the nep formed in this way is again rubbed in the cross-sectional direction of the yarn by the rotation and vibration of the rough surface, expanding the nep. The degree to which the NEP is increased or reduced increases, and as a result, the size of the NEP increases.

The reason yarn breakage still occurs is due to the longitudinal fluff, but by applying such vibration, the initially formed crooked fluff can increase the roughness of the rough surface by the time it reaches the cutting elongation of the yarn. The probability of yarn breakage is reduced due to the fact that the yarn elongation is instantly restored by being moved from the abutment area or by the yarn entering a kind of relaxed state immediately after the movement. considered to be a thing.

That is, the gist of the present invention is as described above, but from the research process of the present inventors, 1. By using crimped yarn as the supplied yarn, a more preferable yarn in terms of bulkiness, texture, etc. can be created. (Experiment A
14).

2. Discovery of scales that can produce a variety of fancy effects by using mixed fibers with different cross-sectional shapes and dyeability, such as nylon-polyester yarn drawn and simultaneously false-twisted or polyester-cationically dyeable polyester drawn mixed fiber yarn. (Experiment A 15 ).

In carrying out the present invention, the yarn may be used continuously with false twisting, or the yarn may be continuously or intermittently bundled in the longitudinal direction by heating, heat treatment, fluid treatment, etc. I can do it.

Next, a method for measuring the above data will be described.

(1) Fineness of supplied yarn; crimped yarn is JISL-109
0 yarn is measured according to JISL-1073.

(2) Single yarn average strength: strength (me) calculated by dividing the cutting strength (f) of the supplied yarn by the number of filaments.

(3) Yarn breakage during processing: Number of yarn breakages when converted to 106 m of supplied yarn.

(4) Number of fuzz in the obtained yarn (pieces/m): Measured using a fuzz counter I) Model T-104 manufactured by Toshiku Co., Ltd.

Measurement yarn length 100077Z (10 cheeses with different processing parts
100? ? Z) Measurement unit yarn length 1 m0 ($ Number of nep of the obtained yarn (pcs/10 m); Measure the uniformity of the yarn using U% Ibnestar manufactured by Keizai Kogyo and Co., Ltd.
The neps shown on the measurement chart were counted.

Measuring thread length 10007? Z (10 cheeses with different processing parts
100? ? Z).

Measurement unit yarn length 10m0 (Evaluation of O-nep; Fabrics (gray fabrics) using each of the obtained threads as wefts were created under the following main conditions, and the size of the nep portion appearing on this fabric was actually measured. This is the numerical value.

Warp yarn: Polyester 150d/30f crimped yarn Warp density: 74/2.54 crn Weft density: 75d yarn is 84/2.54cm (Experiment A8.13) 100d yarn is 73/2.54cm 2.54cm (Experiments A1-4, 9.10) 150d yarn is 60/2.54cvt (Experiments A5-
7, 11, 12, 14° 15) Textile structure: Plain weave Since the present invention has the above-described structure, it is possible to obtain yarns having fluff and various naps of different sizes.

Moreover, it is possible to obtain a yarn of stable quality with less variation in the number of fuzz and nep, and there are also fewer yarn breakages during processing, resulting in good production efficiency.

Example Experiment A15 yarn and normal polyester 150d/72
A woven fabric in which f-crimped yarns and weft yarns were alternately used as weft yarns was prepared under the following main conditions.

Loom: GH-3 type loom manufactured by Toyota Loom Machine Rotation speed: 160 r, p, m Warp yarn: Polyester 150 d/30 f crimping force warp density: 74/2.54 cm Weft density: 60/2. 54cm Textile texture: plain weave The woven fabric had a moderate amount of naps and fluff, and was rich in fullness and warm color, with very little sliminess and flatness characteristic of synthetic fibers.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the method for manufacturing a special raised yarn of the present invention, and FIG. 2 is an enlarged view of the raised processing section in FIG. 1. 1 multifilament yarn, 2 feed roller, 3,
The yarn is moved by 3' guide, 4 bi-plenition device, 4' pipe-plenition member, 5 rough surface, 6 delivery roller, 7 traverse guide, 8 winder, 9 paper tube, and A-pipe pre-knee-joon member 4'. state, state in which the B-pipe lenition member 4' is not acting on the yarn, i
The rotation direction of the grindstone roller, the contact angle between the θ trachea and the thread.

Claims (1)

[Claims] 1. When fluffing a thermoplastic synthetic fiber multifilament yarn by bringing it into contact with a rotating rough surface, the following formulas (1) and (16) are satisfied, and T1: the yarn immediately before abrasion. Tension (Me T2: Yarn tension immediately after rubbing (f) D = Total denier of the supplied yarn F: Total number of filaments of the supplied yarn G = Average single yarn strength of the supplied yarn (and the yarn has a rough surface) A method for producing a special raised yarn using a multifilament yarn, which comprises vibrating a part of the cut filaments into a lump by vibrating it with a pipe lenition device immediately before and/or immediately after the process. 2. Thermoplastic synthetic fiber multifilament yarn A method for producing a special raised yarn using a multifilament yarn according to claim 1, wherein the threads are crimped yarns. 3. The thermoplastic synthetic fiber multifilament yarn is a mixture of filaments with different cross-sectional shapes and/or dyeability. A method for producing a special raised yarn using the multifilament yarn according to claim 1 or 2, which is a fiber.