JPS61186543A - Production of bulky interlaced 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] [Industrial application field] The present invention relates to a method for producing bulky entangled yarn.

[Conventional technology]

In recent years, in the field of filament processed yarns, there has been a rise in the trend toward natural fibers, and the use of disturbed flow, which has a spun-like appearance and a sense of volume, centered on loops and fluff, as typified by Taslan yarns, has become popular. Processing systems are the mainstream and are currently being deployed.

In addition, regarding these techniques, for example, Japanese Patent Application Laid-open No.
In Publication No. 59 and Japanese Unexamined Patent Publication No. 56-4728, once,
An improved method has been proposed in which a false twisting process is further performed after the disturbance is performed. These improved methods generate S-Z alternating untwisted yarns through additional false twisting, thereby imparting alternating twists to bulky entangled yarns, improving the cohesiveness of the entire system, and improving The aim is to improve the passability of the

[Problem that the invention seeks to solve]

Originally, the disturbed fluid treatment system has loops and fluff protruding in the direction perpendicular to the yarn, showing a highly complex three-dimensional entanglement.Although this creates high bulkiness, it does not have firmness in terms of texture. It has drawbacks such as lack of grip and lack of feel in the hand. These drawbacks are due to the focusing structure of the turbulent flow treatment system, that is, the entanglement that is the basis of the focusing of the entire system does not have a fixed length, but rather has a short length. It has the character of a series of intertwining points. Therefore, the integrity of the yarn in the longitudinal direction is relatively low, and it is misleading to think that this leads to the aforementioned defects in texture.

However, in the above-mentioned improvement method, an untwisted portion is generated in the false twisting process, and the twist in the 2 or S direction partially remaining in the yarn is intended to improve the cohesion of the yarn in the longitudinal direction to a certain degree. However, the repetition period of the alternating twist applied to the yarn is short, and for this reason, it is currently not possible to expect a significant improvement in the texture.

[Means to solve the problem]

The present invention is a method for producing a bulky entangled yarn, which is characterized in that multifilaments are subjected to a bulky entangled treatment using a turbulent flow under oversupply, and subsequently subjected to intermittent false twisting.

[Action, effect of invention]

The present invention will be explained below using the drawings.

FIG. 1 is a basic process diagram of the present invention. Supply system (1)
The diameter of the feed roller (2) is supplied to the turbulent flow treatment nozzle (3) in an oversupply state for bulking treatment. Next, the second feed roller (4), the heater (5), and the false twisting device (6) process the false twisting process, pass through the n1 delivery roller (7), and wind it up with the winder (8).

Here, the false twisting device (6) is not particularly limited, but in the present invention, it is necessary to heat the yarn intermittently, and from the viewpoint of responsiveness, simplicity of equipment, etc., a swirling flow is used. False twist nozzles are preferred. There are no particular limitations on the method of intermittent supply of air to this false twisting nozzle, but generally it is by receiving an electrical signal obtained from a device that generates a random pulse signal of 0N-OFF'. A method in which a solenoid valve is used is preferable. A major feature of the present invention is that a bulky entangling process is performed using a turbulent flow, and then intermittent false twisting is performed after the twisting.
exerts the following functions and effects. That is, in order to maintain the long section upstream of the false twisting device by heat setting, the false twisting action is carried out to maintain the high twist state at the possible length. After the heat setting, the false-twisting action is immediately stopped so that no untwisting action occurs even if this strongly twisted set part passes through the false-twisting device. The strong twist state in the false twist direction for a long section, which cannot be obtained by ununtwisting by false twisting, can be obtained as is. The portion having pt is also obtained in a relatively long period.

Therefore, the first processing area (Fig. 1, the first feed roller (
2) to the second feed roller (4)).
Z alternating twist greatly improves the longitudinal integrity of the yarn, resulting in a great effect on the product's texture.

Furthermore, increasing the alternating period of S and Z has a significant effect on the appearance of the product.

In other words, in the parts with the twist directions S, Z, etc., the apparent appearance of the thread will be the difference in thickness, gloss, etc. due to the difference in the twist direction, the difference in twist density, the difference in convergence due to twist, etc. Unlike conventional products with short pitch cycles, which are monotonous and uniform, it is possible to create a more natural yarn uneven feel, and it combines with the warmth and volume inherent to bulky interwoven yarns. It is possible to produce an effect similar to that of spun yarn.

FIG. 2 shows the first
The second feed roller (4) is completely omitted from the process shown in the figure, but this makes the change in the appearance of the yarn more noticeable, increases the sense of yarn unevenness, and improves the glossiness. It can give you a sense of luxury.

That is, bulk entangling processing and intermittent false twisting processing by turbulent flow are performed in the same oversupply area, but at this time, due to the false twisting action, the twists flow upstream and pass through the turbulent flow treatment nozzle. A case may occur in which the threads traveling through the pipe are also heated and converged. This occasion is
Needless to say, even if the traveling yarn is inside the turbulent flow treatment nozzle, it cannot be opened, and therefore it can become a bulky intertwined yarn, but it remains completely twisted due to the effect of the intermittent twisting described above. become.

In order to reach this state, appropriate air pressure and injection time are required, and by appropriately selecting these conditions and by providing randomness to the injection time, it is possible to Items with large apparent thread-patterned windows that have the entire bulky woven part with opposite twists, and those that have a mixture of these and parts with relatively few thread-patterned windows, are used to create a feeling of breeze, luster, and volume. It becomes possible to produce large changes in sound.

As described above, the present invention is able to achieve n
This is of great significance as it can bring out effects on the appearance and appearance of the product.

〔Example〕

Hereinafter, the present invention will be specifically explained with reference to Examples.

Example 1 The present invention was carried out under the following conditions in the process shown in the second factor.

Raw yarn used Nitriacetate filament B100 (1/
/14fX polyester filament 5D50d/24
f Processing conditions: Processing speed = 70 m7 minute overfeed rate = +12.2% Air pressure (turbulent flow processing nozzle/false twisting nozzle) = 1.
572.6 to 97cm" Air intermittent time (injection time/stop time) = α25~cL4/α15~α3 sec Heater temperature = 185℃ As a result, the obtained processed yarn is compared with a bulky entangled part with a bulky feel. The yarn form was formed by alternating well-tailored untwisted portions, and the fabric knitted from this processed yarn had slight streak-like changes on the surface and had a good appearance.

Example 2 In the process shown in FIG. 2, processing was carried out using the following yarn and conditions.

Raw yarn used Nitriacetate filament B75 Li/
20 f X polyester filament Bsoa/1
zf Processing conditions: Processing speed = 70 m/min Overfeed force = +150% Air pressure (turbulent flow processing nozzle/false twist nozzle) = 1. '
5/5-OK9/cm" Air intermittent time (injection time/stop time); α25~α4/a15~αS se
c Heater temperature = 185°C As a result, when air false twisting is applied, the twisting moves upstream to a large extent, and the effect even extends to the inside of the bulking nozzle, and the remaining twisted part is focused quite strongly. It has a good gloss, is mixed with bulky entangled parts, has a moderate volume and changes in gloss, and also has a good firmness and firmness.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic process diagrams showing embodiments of the present invention. 2... First feed roller, 3... Turbulent flow processing nozzle, 4... Second feed roller, 5... Heater, 6... False twisting device 7... Delivery roller, 8...Take-up device threat 1 River blue 2 diagram

Claims (1)

[Scope of Claims] 1) A method for producing a bulky entangled yarn, which comprises subjecting multifilaments to a bulky entangling treatment using a turbulent flow under oversupply, followed by intermittent false twisting. 2) The method for producing a bulky entangled yarn according to claim 1, wherein the bulky entangled treatment by turbulent flow and the intermittent false twisting are performed in the same oversupply region.