JPS60119242A - Production of yarn suitable for nep-like fabric - 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 multifilament yarn in which a plurality of small yarn loops are spread from the axis of the yarn along the longitudinal direction of the multifilament yarn. However, in general, core threads and threads with windings are used to create designs (
A method is adopted in which a twisted yarn is intermittently supplied while being swirled around a core yarn using a twisting machine such as a twisted yarn machine (Italian) to form a nep. The nep yarn obtained by this method has neps formed intermittently by mechanical control, so its form is geometrically monotonous and has a natural fabric appearance with complex changes. It wasn't something to give. In addition, the nep part of these nep yarns is a nep part that has a lump-like shape due to the accumulation of strong twists, so once this thread is wound around a thread such as cheese, it is unraveled into a solid lump. This has the disadvantage that the yarn gets caught and sometimes it is necessary to unwind while rotating the winding body, resulting in low productivity.Also, it requires a high number of actual twists. So,
It was impossible to avoid low productivity and high costs.

The present invention solves these conventional drawbacks, and its purpose is to reduce the frequency of occurrence of nep-like parts such as nub-knob parts and walnut parts by reducing the natural swirling action and entangling action of the fluid. By controlling the variation, the form of the nep-like part changes randomly, and when it is made into a fabric, it can give a very natural surface appearance, and it also has good unwinding properties. The purpose of the present invention is to provide a method for producing yarn suitable for textured textiles.

Zunawa 51 The present invention feeds two or more multifilament yarns at different feeding rates to a fluid treatment zone that can provide swirling as well as entangling effects.

The gist of the present invention is to provide a method for producing yarn suitable for nep-like fabrics, which is characterized by intermittently forming loop-shaped nep portions and walnut portions in which a plurality of single yarn loops spread out from the axis of the yarn.

Hereinafter, five aspects of the present invention will be explained in detail.

In the present invention, two or more multifilament yarns are fed at different feed rates to a fluid treatment zone that can impart swirling and entangling effects to the yarns.

A plurality of single yarn loops from the axis of the yarn) intermittently form curved loop-shaped nep parts and walnut parts, but the fluid treatment area that provides swirling action and entangling action has a swirling action. It may be formed from a fluid treatment device consisting of one fluid treatment nozzle having both functions of a swirling action and a fluid treatment nozzle having an entangling action. It may be formed by a processing device.In the case of the former device, a swirling action and an entangling action act on the yarn at the same time, and in the case of the latter device, a fluid treatment nozzle with a swirling action acts on the yarn. While the yarn is being given a swirling action, it is guided to a fluid treatment nozzle that has an entangling action to give the yarn an entangling action.In short, it is a fluid that can give a swirling action and an entangling action to the yarn at the same time. In the present invention, two or more multifilament yarns are supplied to the fluid treatment zone at different feeding rates. Two or more multifilament yarns are fed at different feeding rates to form loop-shaped nep portions and walnut portions in which a plurality of single yarn loops spread out from the core of five yarns intermittently along the longitudinal direction of the yarn. let

In the present invention, it is presumed that a plurality of single yarns run from the axis of the yarn. When two multifilament yarns are supplied at different supply rates to a fluid treatment area that has a swirling action and an entangling action, first, the multifilament yarn with a larger supply rate becomes the one-turn yarn due to the swirling action of the fluid. Wind it onto the smaller multifilament thread. The yarn, in which the multifilament yarn with a smaller supply rate is the core yarn and the multifilament yarn with a higher feed rate is the te winding yarn, is preliminarily fired and then untwisted by the swirling action of the fluid. Unlike the case of a tentative spindle in the equation, the untwisting point is not fixed but fluctuates in the vicinity of the turning point.

In the fluid treatment region, a swirling action and an entangling action are applied to the yarn, but due to the above-mentioned fluctuations in the points, the yarn may be in a state where the entanglement is applied.

Its state fluctuates, sometimes being in an untwisted state.

Even if an entangling effect is applied to the yarn in the burnt state, the entangling effect is small and only a slight entanglement is formed. However, if the entangling effect is applied to the untwisted yarn, the wound yarn becomes multiple. It becomes a loop and intertwines with the core yarn.

Alternatively, as a result of the winding yarn becoming slack and intertwining the front and back of the slack portion with the core yarn, a loop-shaped nep portion and a walnut portion are formed in which a plurality of single yarn loops spread out from the axis of the yarn.

In the present invention, two or more multifilament yarns are supplied to the fluid treatment area with different supply rates, so the core yarn with a low supply rate is wound 10 times with a high supply rate. The form of the loop-shaped nip portion and the walnut portion formed differs depending on the magnitude of the difference in the supply rate. In other words, the point attached to the core yarn of the wound yarn is constantly changing due to tension fluctuations in the core yarn and the wound yarn, so as the supply rate of the wound yarn increases, There are also places where the windings overlap in double or triple layers, and this phenomenon also contributes to the formation of loop-like nep and walnut parts, and therefore the difference in the feeding rate between the core yarn and the 10-turn yarn. As t@ becomes larger, the difference in yarn length between the spinning yarn and the core yarn becomes larger, and a large loop-shaped nip portion or walnut portion is formed.

In the present invention, two or more multifilament yarns are supplied to the fluid treatment area at different supply rates as described above, but the supply rate of the multifilament yarn, which is the core yarn and has a smaller supply rate, is set to 0. ~5%, and the supply rate of the multifilament yarn, which is the susceptible yarn with a larger supply rate, is 2~25%.
% is preferable. If the supply rate of the multifilament yarn, which is the core yarn, is less than 0%, the tension of the core yarn will be high and the number of twists will decrease, and it may not be possible to increase the number of turns (the core yarn of the affected yarn). On the other hand, if it exceeds 5%, the core yarn may move more violently and the frequency of yarn breakage may increase. In addition, if the supply rate of the multifilament yarn, which is a 1-turn yarn, is less than 2%, the loop-shaped nep portion and walnut portion that are formed will become smaller5 and their frequency will decrease. If this value is exceeded, the te thread may not be able to wrap around the core thread once enough, which may increase the frequency of thread breakage.

The present invention will be explained below with reference to one illustrated example. In FIG. 1, a fluid treatment device (5) capable of applying a swirling action and an entangling action almost simultaneously to the multifilament yarn (fl) by a supply roller (3) at a supply speed higher than the surface speed of the take-up roller (6). ) to (Jj), and at the same time the multifilament yarn (2) is supplied to the fluid processing device (5) by the supply roller (4) which rotates at a faster surface speed than the supply roller (3). Due to the swirling action of the fluid, the multifilament yarn (2) is wound around the multifilament yarn (11), and both yarns are given false twist, and entangled due to the entangling action of the fluid.In this way, the fluid treatment is performed. The obtained yarn passes through a take-up roller (6) and is wound up by a winding roller (7).
As shown in the figure, it has intermittent loop-shaped nep parts and walnut parts where a plurality of single yarn loops spread out from the axis of the yarn.

The fluid treatment device may be a combination of a fluid swirl nozzle (51) and a fluid agitation nozzle (52) as shown in Figure 3 (al), or a combination of a fluid swirling nozzle (51) and a fluid stirring nozzle (52) as shown in Figure 3 (bl). For example, a fluid nozzle (53) having a fluid nozzle (53) having a function of The fluid agitation nozzle (52) shown in FIG. If the direction is opposite to the yarn running direction, a loop-shaped nep portion or a walnut portion can be effectively formed.

Figure 3 (in al, the thread is a fluid swirl nozzle (51)
The fluid flowing in from the compressed fluid introduction hole (512) is guided to the thread passage hole (511) where a vortex is formed.

Preliminary combustion is performed, and squeezing and entangling are provided by fluid ejected from the compressed fluid introduction hole (522) of the fluid disturbance nozzle (52) to the yarn guide hole (521).

In the fluid nozzle (53) shown in FIG. 2 1bl.

A compressed fluid introduction hole (532) is eccentric to the yarn guide hole (531) and opens into the yarn guide hole (531,) toward the yarn traveling direction, and the compressed fluid is injected from the compressed fluid introduction hole (532). The fluid provides swirling and entangling effects at the same time.

The yarn obtained by the method of the present invention has intermittent loop-like nep parts and walnut parts as shown in FIG. 2 (al) and FIG. 2(b). , a plurality of single yarn loops (al) made of threads are spread out from the axis of the yarn, and the core yarn and the thread are tightly intertwined in the axis of the yarn. The confounding part (a
ri is formed.

When tension is applied to such a loop-shaped nep portion, it is absorbed by the intertwined portion (a2), and the single loop (a,) is prevented from unraveling. In addition, the walnut part shown in FIG.
A walnut (b-ri) is formed between the twisted threads (z), and the thread length of the twisted threads between the intertwined parts is the axis center (bl).
This is because the core thread is longer than the core thread.

When a thermoplastic multifilament yarn is used as the multifilament yarn in the present invention, a heating element can be provided between the fluid treatment area and the point where the wound yarn wraps around the core yarn to heat-fix the twisted yarn.

Although the yarn obtained by the method of the present invention can be preferably used mainly for woven fabrics, there is no problem in applying it to 3-knitted fabrics.

Note that in the present invention, the supply rate is the ratio of the difference between the supply rate and the take-up speed to the take-up speed, expressed as a percentage.

In the present invention, the loop-shaped nep part and the walnut part are formed by supplying the multifilament yarn to a fluid treatment area that can give an entangling action as well as a swirling action, which is different from the generation of neps by conventional mechanical control. In contrast, the frequency of occurrence of the loop-shaped nep portion and the nep-like portion of the walnut portion is random, and the form of the nep-like portion can be obtained in a variety of naturally changing shapes. Therefore.

When such threads are made into a fabric, it is possible to give the fabric a surface appearance that is extremely natural. Further, according to the present invention, a yarn having a loop-like nep portion and a walnut portion in which a plurality of single yarn loops are spread from the axis of the yarn is obtained, and since the loop-like nep portion and the walnut portion are flexible, the yarn There is no resistance when unwinding the strips. Therefore, when the yarn is unwound from the yarn wrapper, there is no fear of yarn breakage due to the nep portion being caught as in conventional nep yarns, and these loop-shaped nep portions and walnut portions can be weaved.

It exhibits a nep-like surface effect on the woven fabric by being pressed and fixed by the warp and weft threads in the woven fabric.

The present invention will be specifically explained below with reference to Examples.

Example 1 In the process shown in FIG. 1, a cationic dye-dyeable polyester multifilament system 75 d /
Fluid treatment was performed by supplying 24 f. The fluid processing device in FIG. 1 is a device 1 that combines a fluid swirling nozzle and a jet-type fluid agitation nozzle shown in FIG. The feeding rate of multifilament yarn (11) was 0.1%, and the feeding rate of multifilament yarn (2) was 15%.
%, and the take-up roller surface speed is 24Qm/mjn,
Furthermore, compressed air (room temperature) of 7 kg/cJ was supplied to each of the fluid swirl nozzle and the fluid agitation nozzle, and the winding speed was 2.
Processing was performed at 33 m/min. The obtained yarn is shown in Figure 2 (a
) 9 where a plurality of loops spread out from the axis of the yarn, and lume portions are formed intermittently as shown in FIG. The part without ζ is multifilament yarn (11 and (2)
) were aligned or slightly confounded.

Multifilament yarn 75, which is a blend of cationic dye dyeable polyester multifilament yarn (12f) and regular polyester multifilament yarn (24f)
d/36f was used as the warp, and the yarn according to the present invention obtained above was used as the weft, and was woven into a plain structure with a warp density of 105 threads/inch and a weft thread density of 62 threads/inch.

The unwinding property of the yarn according to the present invention from the yarn body during weaving was as good as that of a processed yarn of 1π thread.

When the obtained fabric was dyed with a cationic dye (blue), the loop-shaped nep part and the walnut part were held down by the warp yarns, and various nep forms appeared in blue on top of the white and blue heathered appearance. It had a natural surface appearance that clearly stood out in color.

[Brief explanation of drawings]

FIG. 1 is a process schematic diagram showing an example of the method of the present invention. FIG. 2 (al is a schematic diagram showing an example of the loop-shaped nep part of the yarn obtained by the method of the present invention, FIG. 2 tb> is a schematic diagram showing an example of the walnut part of the yarn obtained by the method of the present invention. Fig. 3(a) is a sectional view showing an example of the fluid processing device, and Fig. 3(b) is a sectional view showing another example of the fluid processing device. (51) is a fluid swirling nozzle, (52) is a fluid stirring nozzle, (53) is a fluid nozzle having swirling action and entangling action, (al) is a single yarn loop,
(ax) is the interlaced part, (b2) is the walnut. (b3) shows a confounding part. Patent applicant: Yu-Tei Riki Co., Ltd.

Claims (1)

[Claims] (11J & Two or more multifilament yarns are supplied at different feeding rates to a fluid treatment area that can give an entangling effect as well as a rotating action, and a plurality of single yarn loops are formed from the axis of the yarn. A method for manufacturing a yarn threaded through a nep-like fabric, which is characterized by intermittently forming expanded loop-shaped nep portions and walnut portions. (2) Among two or more multifilament yarns, the one with a smaller supply rate. The nep according to claim 1, wherein the supply rate of at least one multifilament yarn is 0 to 5%, and the supply rate of at least one multifilament yarn having a larger supply rate is 2 to 25%. A method of manufacturing thread threaded into textiles.