JPS61119745A - Production of 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 interlaced yarns.

(Prior art) Conventionally, it has been known that interlacing treatment is performed on yarns according to USP 2.
, 985,995. In order to increase the cohesiveness of such interlaced yarns, the number of entanglements (
It has been common practice to increase the number of ILs (hereinafter referred to as the number of ILs). That is, according to conventional thinking, in order to improve the convergence of interlaced yarns, it was considered effective to increase the interlaced portion and to reduce the non-entangled portion (increasing the number of ILs) to a certain extent. . Such an increase in the number of ILs is obtained by the action of high fluid pressure.
It was thought that the filaments constituting the yarn are strongly intertwined to form an intertwined portion that cannot be easily unraveled, and this, in combination with a reduction in the proportion of the unentangled portion, increases the cohesiveness of the yarn.

However, it has been found that when such yarns with a large number of ILs are woven using a loom that rotates rapidly, especially a water jet loom that operates at 500 revolutions per minute or more, there is a tendency for fuzz to increase and yarn breakage to increase. Served.

(Object of the Invention) The object of the present invention is to solve such conventional problems and to realize high-speed lj
l! It is an object of the present invention to provide a manufacturing method that enables a novel intertwined yarn that does not generate fuzz and does not increase yarn breakage even when weaving in one turn.

(Structure of the Invention) The present invention provides a method of jetting fluid from a fluid injection hole opened in a yarn passage hole to impart entanglement to the yarn running in the yarn passage. ) and fluid pressure (P) are satisfied by the following formula: The number of entanglements is 30 to 50/m, and the maximum entanglement angle of the entangled portion is less than 15°. A method for producing an interlaced yarn, characterized in that the interlaced yarn contains 90 or more threads.

0.5<-≦3.5 ・・・・・・・・・(I)
P T: Tension of the yarn at the entrance side of the yarn passage hole (91P: Pressure of the fluid used (kg/d・G) In the method of the present invention, the number of ILs applied to the yarn is 30 to 50 pieces/ It is important that IL#!l is within the range of 3 (1
~1 (in the range of 10 g/m, preferably in the range of 6 to 80 g/m).

However, in the present invention, the number of ILs is 50 pieces/m
Do not exceed. If the number of ILs exceeds 50 threads/m, fuzz and thread breakage during weaving will increase, making it impossible to obtain the effects of the present invention, and causing irritation as entangled portions will remain in the fabric. This is because it causes Also, M
If the number of ILs is less than 30 threads/m, the threads have poor convergence and cannot be used.

The number of confounds referred to in the present invention is defined in U.S. Patent No. 2.985,9.
The measurement method is based on No. 95, and the test length is approximately 1 m.
Hang the storage compartment of Total Denier Let the hook drop gently at a speed and find the distance L (crIL) until it stops at the intertwined part. The total weight of the hook is in grams equivalent to the denier of a single yarn, for example, 2.5 grams in the case of a denier of 2.5 de. Measurement is performed 50 times, and the number of entanglements -100/L is calculated from the average value.

Next, in the method of the present invention, it is important that the maximum entanglement angle θ of the intertwined portion of the yarn is 15° or less. Figure 1 shows
FIG. 3 is a side view illustrating the maximum entanglement angle θ of the present invention. As shown in Fig. 1, in the intertwined part, the filaments 1 in the surface layer of the yarn are intertwined in various directions, but the angles between the intertwined filaments 1 and the axis of the yarn, as shown in 2, are intertwined in various directions. The maximum angle (θ) is determined, and the number of intertwined portions where the maximum intertwined angle θ is 15° or less must be 9 () or more of all intertwined portions. If the maximum entanglement angle θ exceeds 15° in many cases, fuzz and yarn breakage will increase during weaving, which is not preferable.

The maximum entanglement angle θ is measured by taking several electron micrographs of the entangled portion along the circumferential direction and determining the maximum entanglement angle with the yarn axis. Depends on the method implemented for the department.

In addition, in the method of the present invention, when interlacing the threads,
It is important that the yarn tension (T) and fluid pressure (P) satisfy equation (I). If the yarn tension (T) and the fluid pressure (P) do not satisfy the formula (1), the number of entanglements and the maximum entanglement angle will not match those of the present invention, and the effect of the present invention may not be obtained. Can not.

(Action of the Invention) Since the method of the present invention has the above configuration, the resulting interlaced yarn exhibits excellent weavability.

As the number of interlaced yarns produced by the conventional method increases,
The proportion of unentangled portions decreases, and the cohesiveness of the threads appears to improve.

However, when the intertwined yarn with only an increased number of ILs obtained by the conventional method is used for weaving a straw carpet pattern, fuzz and yarn breakage increase, resulting in poor weavability. FIG. 2 is a side view showing an intertwined part of interlaced yarns according to a conventional method, and there are wrapped fibers as shown at 3 in the intertwined part. In the actual weaving process, when an intertwined part having wrapped fibers as shown in 3 in Fig. 3 is rubbed many times by heddles or reeds, the wrapped fibers 3 move in the direction of the frictional movement of the heddles or reeds. It is inferred that the M-wire resistance becomes a dog and cuts from the wound fibers, and the cut ends become fuzz, eventually causing yarn breakage. Therefore, in order to reduce the 1# friction resistance of the intertwined parts as in the present invention, it is effective to have the intertwined angle as small as possible.
In particular, those having a maximum entanglement angle θ of 15° or less are preferable.

Further, the IL number needs to be 50 g/m or less in order to reduce the chance of friction as much as possible.

However, if the number of ILs is simply reduced, the chance of friction is reduced, but on the other hand, the convergence of the entangled portion is extremely poor, causing fuzz and yarn breakage during weaving.

In the method of the present invention, the interlaced yarn is produced by imparting entanglement while satisfying the conditions such as formula (1), so the obtained interlaced yarn has good convergence at the interlaced portion to the extent that it does not interfere with weaving work. Therefore, it can be used satisfactorily without causing fuzz or thread breakage.

Furthermore, since the number of ILs is in the range of 3 to 50 to 7 m, almost no intertwined portions remain in the woven fabric after weaving, and it is possible to reduce the irritation on the woven fabric surface.

(Example) When performing fluid entanglement treatment on polyester filament yarn 50de/24fil, yarn tension (T) and fluid pressure (
P) was used under various conditions as shown in Table 1 to obtain interlaced yarns.

Using the interlaced yarn, the number of rotations is 6 n ov in a plain weave structure.
/m water jet loom to evaluate weavability. The tension during weaving is (1.25g/d
e was used.

In Table 1, with percentages of 1 and 2, fuzz was generated during weaving, and desirable weavability could not be obtained, and the quality of the woven fabric was also poor. /163, some fuzz occurred during weaving, but it was within an acceptable range. /166 could not be woven due to lack of convergence.

[Brief explanation of drawings]

FIG. 1 is a side view illustrating the maximum entanglement angle of 0 used in the present invention, and FIG. 2 is a side view showing the entangled portion of the interlaced yarn Q) according to the conventional method. θ・・・Maximum entanglement angle

Claims (1)

[Scope of Claims] 1. In a method in which a fluid is jetted from a fluid injection hole opened in a yarn passage hole to impart entanglement to the yarn traveling in the yarn passage, the tension (T) of the yarn is and fluid pressure (P
) The interlaced yarn is made so that the number of entangled yarns is 30 to 50 pieces/m and the maximum entangled angle of the interlaced part is 15° or less by applying interlacing so that the following formula is satisfied: A method for producing an interlaced yarn, characterized by: 0.5≦T/P≦3.5... [I] T: Tension of the yarn at the entrance side of the yarn passage hole (g) P: Pressure of the fluid used (kg/cm^3・G)