JPS58214543A - Combined false twisted processed 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 false twisted yarn in which a plurality of yarns are aligned and combined.
More specifically, the present invention relates to a false-twisted yarn with an improved transition point from the tail section to the normal winding section.

Generally, false twisted yarns with fine crimps are preferred.

When producing large-sized false-twisted yarns, the method of directly false-twisting large-sized yarns results in coarse twisting angles, even if the same twist coefficient as silk is applied to the false-twisting process. , only those with poor bulk and elasticity can be obtained. Therefore, methods for obtaining large textured yarns with fine crimps include a method of false twisting thin yarns in advance and twisting the obtained textured yarns to a predetermined thickness; A commonly used method is to pull a plurality of thin processed yarns processed by multiple spindles of a processing machine into a predetermined thickness, align them, and wind them up.

By the way, the method of obtaining a processed yarn of a predetermined thickness by doubling and twisting a plurality of processed yarns, so-called 9-ply twisting, requires multiple processes and several tens to hundreds of times/M. Since actual twisting is added, productivity decreases and bulkiness is also impaired, so it is used only when a special texture is required.

On the other hand, the method of aligning and piling thin threads processed using multiple spindles of a false twisting machine is generally used because it is a continuous process, has high productivity, and does not impair bulk. There is. For example, 150 denier yarn is directly false-twisted, 75: denier yarn is false-twisted and two of the processed yarns are aligned, and two yarns are aligned, and 300 denier yarn is used. The false-twisted yarn of 9 cannot be obtained in terms of quality with normal false-twisting, such as crimping characteristics of 1 fluff and Talmio heat-setting spots, so multiple yarns are processed at two places on the same false-twisting machine. When a processed yarn made by aligning and combining twisted processed yarns is used as a weft for a water drop-jet loom, the weft may split and become entwined with the warp and not pass through, or the weft may be bent and woven. Problems often occur, such as the formation of cotton tubes, which significantly deteriorates the weavability and quality of the fabric.

On the other hand, the processed yarn produced in a false twisting machine is usually wound into a cheese shape.

The cheese used directly on the weft of the water jet loom is wound with a tail to allow continuous use. This tail portion must have the necessary yarn length and be tightly wound, otherwise it will not be able to perform its full function during use.

When winding a processed yarn in which a plurality of false twisted processed yarns are aligned and combined, when a tail take-off device is used to wind up the processed yarn, the so-called part between the tail part and the normal winding part.

The threads at the base of the transition are not combined into a single thread.

Often, multiple threads are wound separately.

The inventors of the present invention confirmed that there is a strong correlation between the condition of the threads at this transitional base and the aforementioned weaving properties and fabric quality, and performed air entanglement treatment on this transitional base.

The present inventors have discovered that weavability and fabric quality can be significantly improved by forming a single yarn that is nine-plyed without separating multiple yarns, and has arrived at the present invention.

It should be noted that a method is known in which conventionally nine-folded processed yarn is subjected to air entanglement treatment to impart entanglement over the entire length of the yarn to impart binding properties between the yarns. however.

When the yarn obtained by this method is used as the weft of a water jet loom, the yarn is strongly intertwined over the entire length, resulting in loss of elasticity and bulkiness.
The original characteristics of the yarn are not utilized, and not only is it not possible to obtain a good product texture, but also a moiré phenomenon occurs due to entanglement.

The disadvantage is that the quality is significantly impaired.

Hereinafter, nine aspects of the present invention will be described in detail based on drawings and examples.

Figures 1 and 2 show two false twisting machines ρ- which embody the present invention.
FIG. 2 is a schematic diagram illustrating an example.

FIG. 6 is a plan view showing the main parts of the winding mechanism;
The figure is a side view of a tail-picking guide portion for explaining the operation of the tail-picking guide.

Figure 5 is a front view of the false-twisted yarn that has been aligned and plied.
, (a) shows a configuration in which multiple yarns are separated at the transition base, and (b) shows a configuration in which multiple yarns at the transition base are essentially formed into one yarn by air entanglement treatment. This shows an embodiment of the present invention.

In FIG. 1, 1 is a package of undrawn yarn, semi-drawn yarn, and still drawn yarn of synthetic fibers, and the yarn Y pulled out from the package 1 is passed through the first heater 6 at 10-22 degrees. Afterwards, the false twisting process is applied through the false twisting spindle 4,
20th - Taking off at La 5 (including stretching) 1. Obtain a piece of false twisted yarn.

Further, heat treatment is performed by a second heater 6 provided between the 20th rough 5 and the 60th rough, resulting in a modified false twisted yarn Y1.

Modified false twisted yarn Y obtained in this way,
As shown in FIG. 2, the modified false-twisted yarn Y2 of the adjacent weight is aligned with the yarn Y3 which is doubled by the yarn doubling guide 1'5, and the swinging fulcrum guide 8
The film is then wound onto a winding bobbin 11 in the form of cheese. 12
is an air entanglement processing nozzle, which is placed between the traversing fulcrum guide 8 and the yarn doubling guide 16, and when starting to wind the yarn Y3 onto a new bobbin, the tail collecting guide 9 is used as shown in FIGS. 6 and 4. When the yarn is hooked up and the tail portion 15 is formed on a new bobbin, the tail portion 15 is activated.
The operation is made sure to be performed until the yarn is wound up by the traverse guide 14 while normally forming a yarn layer, so that the yarn in the transfer yarn section 17 becomes substantially one yarn. It is something.

To explain the separation of the threads at the transition base, as shown in FIG. 4, two threads Y1. When yarn Y3 is obtained by simply pulling Y2 together, the yarn Y3 is released from the tail collecting guide 9 and captured by the traverse guide 14 to form a normal yarn layer 16. It is impossible to make one thread without separating the threads. This is because the two threads Y1. Y2 does not come off from the tail picking guide 9 at the same time, and one of them comes off first.

This is because a phenomenon occurs in which the other one comes off with a delay. Therefore, when the threads are wound onto the bobbin and begin to form a thread layer, the two threads are rolled up in a separated state, as shown in FIG. 5(a).

The threads 17' and 17" at the crossing end become separate packages.

In the present invention, as shown in FIG. 5, the core portion is subjected to air entanglement treatment so that the plurality of yarns that have been aligned and combined become substantially one yarn 17 at the crossing point. It is something. In addition, the entangling process is performed approximately 100 minutes after the start of normal winding.
Even if it is applied up to about 0 m, the effects of the present invention will not be impaired.

The air entanglement treatment may be performed by using an entanglement nozzle as disclosed in Japanese Patent Publication No. 56-12250, etc., and the conditions for the entanglement include: Considering the performance of the air entanglement treatment nozzle, etc., conditions may be appropriately selected so that the plurality of threads do not separate, and the degree of entanglement is preferably mild e a
The F' value is preferably in the range of 5 to 70.

With the configuration described above, the present invention has the following effects.

In other words, in the product of the present invention, the multiple yarns at the end of the winding are not separated or separated, but are essentially made into one yarn, so that the multiple yarns at the beginning of the winding in the normal winding section are not separated or separated. Tail transfer is used in a state where the yarn length is kept uniform. Therefore, it not only has good weavability in continuous use due to tail migration, such as when using a weft in a water jet loom.

In the finished woven fabric, there is no defect that the weft is bent and woven into the fabric, and high-quality woven fabric can be produced.

□ In addition, since the air entanglement treatment is applied only to the vicinity of the crossing point, the fine crimp characteristics of the individual yarns that make up the 9-fold yarn are fully utilized.

A product with a good texture can be obtained. Furthermore, since the air entanglement process is localized, moiré-like defects due to the entanglement process do not occur.

The preparation work for moving the tail when making a 4-concave 1N at r is made easier, and the preparation work time can be shortened.

The above-mentioned nine present inventions can exhibit their effects in all of the tail-transferred, aligned, plied, and false-twisted yarns.

Implementation/Example 1 Using the stretch false twister shown in Figure 1, 260 tenier
A 48 filament polyethylene terephthalate pre-oriented yarn (Δn-44x10'''') was processed to obtain a 150 denier, 48 filament false twisted yarn, and two adjacent yarns were pulled together and plied to yield a 600 denier yarn. 5 pieces of cheese as processed yarn of denier 96 filament.
Rolled up into form.

The false twisting conditions were as follows: number of twists: 2400 T/M, stretching ratio: 1.76, length of the first heater, temperature: 1.5 m, and 210°C.
The circumferential speed of the 20th roller was 400 m/min, the winding tension was 0, and the winding was 15 g/roll.

At the beginning of winding, the yarn is air-entangled at the tip of the winding section where tail winding is performed and normal winding begins, so that the two yarns that have been aligned and paired are not separated (standard grade -
1) and products without air entanglement treatment (level Nα-2)
The tail of each product was transferred to the weft in a water jet loom and used continuously to make a woven fabric.

The rate of yarn breakage at the tip of each product, the rate of weft breakage in the water jet loom, and defects due to poor weft flight in the finished fabric (the weft splits, gets entangled with the warp, and does not penetrate through). Table 1 shows the occurrence of defects such as folding or bending of weft yarns.

Table 1 Example 2 A drawn yarn of polyethylene terephthalate 1-757' Neil 24 filament was false-twisted using the false twister shown in Figure 1, and three adjacent spindles of the false-twisted yarn were pulled. Align and double the threads,
225 denier, 72 filament false twisted yarn,
Rolled up into 5 Chaos cheese shapes.

As in Example 1, air entanglement treatment was applied to the transfer tip to prevent the 6 yarns constituting the 9 doublings from separating at the transfer tip. Make a product (level Nα-2).

The results of evaluating each product are shown in Table 2.

FIGS. 1 and 2 of Table 2 are schematic diagrams showing an example of a false twisting machine embodying the present invention.

FIG. 6 is a plan view showing the main parts of the winding mechanism;
The figure is a side view of a tail-picking guide portion for explaining the operation of the tail-picking guide.

FIG. 5 is a front view of the false twisted yarn that has been aligned and combined.
(a) shows a form in which multiple yarns are separated at the transition end, and (b) shows a configuration in which multiple yarns at the transition end are separated by air entanglement, and become substantially one yarn. This figure shows an embodiment of the present invention in which the invention is in the form of a strip.

1: Supply package 2: 10th-ra 3.6: Heater 4: False twist spindle , 5: 20th-la 7: 60th-La 8: Traverse fulcrum guide 9: Tail collecting guide 10: Tail catching hook 11: Bobbin 12: Air entanglement treatment nozzle 16: Doubling guide 14: Traverse guide 15: Tail part 16: Normal ticket taker thread layer 17.17', 17'': Thread crossing section yarn Patent Applicant Higashi Shikaisha Ltd. Figure 8

Claims (1)

[Claims] In a false twisted processed yarn in which a plurality of yarns are aligned and combined. A doubled false-twisted yarn characterized in that the transition end portion from the tail portion to the normal winding portion is treated with entanglement to form substantially one yarn.