JPS58126332A - Production of spun like yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing spun-like yarn, and more particularly to a method for manufacturing spun-like yarn in which a disturbance process is performed using a fluid jet nozzle to form loops and walnuts.

In recent years, the clothing industry has been riding the wave of fashion, and yarn materials have diversified. In order to meet the demands of the industry, the field of yarn processing has made remarkable progress, and yarn materials are being developed using various methods. However, since it is difficult to satisfy these requirements with a single material, compound processing that combines materials with various characteristics has been attracting attention.

When performing composite processing, two or more yarns are combined, but depending on the purpose of the processed yarn to be obtained, yarns with different single yarn finenesses or yarns with different dyeability and other characteristics may be combined. There are methods being used to make this happen. The processed yarn obtained by such a method has unique spun-like characteristics that cannot be obtained by processing it alone.

However, when these conventional spunlike processed yarns are subjected to fluid injection processing, two or more yarns are each supplied to the fluid injection nozzle at different speeds, or when three or more yarns are processed in a complex manner, two or more yarns are This yarn is fed to a fluid jet nozzle together with other yarns of different speeds to perform disturbance processing. Firstly, this method requires a plurality of yarn supply rollers, and also requires high energy to entangle the yarns to form loops and walnuts by agitating them with a fluid jet nozzle. In addition, there are disadvantages such as non-uniform entanglement of the threads.

Therefore, with the aim of overcoming the above drawbacks and obtaining processed yarn with spun-like characteristics with high productivity, the inventors of the present invention have carefully considered a mechanism for forming loops and walnuts using a fluid injection nozzle. In order to achieve entanglement with low energy, it was concluded that yarns with different contractions or different elongations could be fed to the fluid jet nozzle in a knotted manner. We have discovered that it is most efficient to directly supply the yarn to the fluid jet nozzle without winding it up after stretching, and to supply the other yarn to the fluid jet nozzle after winding it up once, and have developed the present invention. It has been reached.

That is, in a method for manufacturing spunlike yarn in which two or more yarns are subjected to fluid injection processing to form loops or walnuts, at least one yarn is a directly drawn yarn, and at least one remaining yarn is This method of producing spunlike yarn is characterized in that the yarn is a drawn yarn that has been wound once, and the two are fed to a fluid injection nozzle at the same speed while being combined.

In general, when drawing processing is performed, the yarn is supplied to the fluid jet nozzle without being relaxed, so it exhibits high thermal shrinkage at the fluid jet nozzle. Moreover, the yarn drawn at a high draw ratio has a low elongation. If a high shrinkage yarn with low elongation is supplied to the nozzle, it will shrink a lot when it is disturbed by fluid. On the other hand, a sufficiently relaxed high elongation, low shrinkage yarn will not shrink much.

Due to this shrinkage difference, the two threads supplied to the fluid jet nozzle at the same speed cause entanglement due to their own contraction force, so that uniform entanglement can be produced with low energy.

Furthermore, the low shrinkage yarn is overfed with respect to the high shrinkage yarn, so that sufficient loops and walnuts can be formed. In particular, here the properties of the high-shrinkage yarn and the low-shrinkage yarn can be selected arbitrarily. Note that the present invention can be applied to stretchable thermoplastic synthetic fibers such as polyamide fibers and polyester fibers.

This will be explained in detail below with reference to the drawings.

FIG. 1 shows a schematic diagram of conventional composite machining.

　゛ FIG. 2 shows one embodiment of the present invention.

In FIG. 1, yarns Y and Y' are supplied from independent drawing yarn pars 71.1', supply rollers 2 and 2', separation roller 3, and
3', fluid-processed by the fluid jet nozzle 4 to form loops and walnuts, which are then taken up by the take-up roller 62 and separation roller 75- through the guide 5 and wound into the package 8. With this method, since the supply rollers 2 and 2' are each driven independently, it is possible to obtain a more interesting textured yarn by changing the supply speed of both yarns to the nozzle. However, as mentioned above, this method requires two supply rollers and two drive systems, and it is difficult to perform fluid jet processing that takes advantage of the differences in the physical properties of the yarn. be.

FIG. 2 shows the method of the present invention, which improves the drawbacks of the conventional method.

In FIG. 2, the yarn 2 unrolled from the undrawn yarn cheese 9 is taken out by a take-out roller 10. The fluid is supplied to the fluid jet nozzle 14 between the separation roller 11, the stretching roller 122 and the separation roller 13, and is taken up by the take-up roller 161 and the separation roller 17 via the guide 15, and wound up into a package 18.

6- Since the yarn subjected to the drawing process has a higher residual shrinkage rate than the yarn once wound into a pirn or the like, an interesting processed yarn can be obtained by utilizing this difference in shrinkage.

Under the moon, the pass is revealed by the example.

Examples 1-5. Comparative Examples 1 to 3 Fluid injection processing was performed using an apparatus shown in FIG. 2 using an undrawn nylon 6 yarn of 270 denier 24 filaments and a drawn yarn of 50 denier 24 filaments. In addition, 50
The elongation of the Tenille 24 filament drawn yarn was changed by changing the drawing ratio. Further, the heat shrinkage rate was changed by changing the heat setting conditions during stretching.

Take-out roller speed 235 m/min, stretching roller speed 80
Processing was carried out at a speed of 0 m/min, room temperature air as the processing fluid, and a take-up roller speed of 715 m/min.

The results are shown in the table below.

In the table above, the processed yarn loop is separated from the processed yarn.

Count the number of loops produced, and the degree of interlace is 0.05
It was measured by the 7 drop method using a t/d load. As shown in the above table, the lower the elongation and the higher the shrinkage rate of the directly drawn yarn, the more loops and interlaces could be formed in the processed yarn, and the texture of the woven fabric was also good.

[Brief explanation of drawings]

Figure 1 is a schematic side view for explaining the conventional processing method;
FIG. 2 is a schematic side view illustrating an example of the processing method of the present invention. 9...Undrawn yarn cheese. 9′・・・・・・・・・Drawn yarn burn. 10......Take-out roller. 12......Stretching roller. 14...Fluid injection nozzle. Patent Applicant Teijin Ltd. Agent Patent Attorney 1) Jun Hiroshi 9-

Claims (1)

[Claims] 1. In a method for producing spunlike yarn by subjecting two or more yarns to a fluid injection process to form loops or walnuts, at least one yarn is a directly drawn yarn and at least one remaining yarn is A method for producing a spunlike yarn, characterized in that the yarn is once wound as a drawn yarn, and the two are fed to a fluid injection nozzle at a running speed while being combined. 2. The method according to claim 1, wherein the elongation of the directly drawn yarn is lower than that of the drawn yarn once wound. 3. The method according to claim 1, wherein the shrinkage rate of the directly drawn yarn is higher than that of the drawn yarn once wound.