JPS62110937A - 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] The present invention relates to an interlaced yarn obtained by interlacing synthetic fiber multifilament yarn (hereinafter simply referred to as multifilament yarn).

[Background of the invention]

It is known, for example, from USP 3,563,021, to interlace multifilament yarns in order to impart the cohesiveness required in the weaving and weaving process to multifilament yarns without sizing or twisting. That is, the main purpose of the interlace treatment is to make the multifilament yarn usable in the weaving and weaving process without twisting or sizing.

On the other hand, the speed of weaving and weaving processes is becoming increasingly faster, for example, as water jet looms have reached the stage where speeds of 600 to 7 GO rpm have been put into practical use.

Therefore, of slow rotation! Even though the intertwined yarns were woven without any problems in the Ba1 weaving process, as the machines in the weaving process become faster, severe rubbing action and tension are applied to the intertwined yarns, causing fuzz and loops in the filaments. This causes a problem in that the weaving properties deteriorate.

In order to solve this problem, the following countermeasures are generally taken. It was a way to increase the number.

In addition, the number of entanglements of the above-mentioned interlaced yarns is according to USP 2985.
A load of denier X O, 2f of multifilament yarn was suspended from the lower end of 1 m of intertwined yarn, the sample was suspended, and the sample was suspended above the sample. A chrome-plated hook with a diameter of about 0.71111 mm (a hook whose total weight is approximately equal to the average denier of the filaments in the multifilament yarn structure in grams) was inserted into the east-central part of the prefecture, and while supported with insect pins, etc. Gently raise the hook until it stops at the interlacement above the insertion position, then lower it gently from that position until it stops at the interlacement below, measure the descending length of 1 crs, and then insert the hook into the interlacement where the hook was stopped. Insert it again just below the intertwined part, lower it again until it stops at the intertwined part, and measure 1 as many times as possible, repeat the same process even if you change the sample, and obtain at least 50 parts of 1. This is the value obtained by dividing the average value of 7 to 100/l. The speed of raising and lowering the hook is approximately 1 cm
/sec is appropriate.

The present inventors have found that even if the number of entanglements in the interlaced yarn is increased unnecessarily, not only will warping increase the occurrence of yarn breakage and fuzz, resulting in a decrease in knitting and weaving properties, but also the resulting woven or knitted fabric will have no entanglement. It has been found that problems such as a large number of parts remaining, causing irritation on the surface and impairing the quality of the woven or knitted fabric, are likely to occur. As a result of further research, they decided to unnecessarily increase the number of confounds.
The number of intertwined parts with a large intertwining angle θ of the filaments as shown in Fig. 2, which wrap around the outer surface of the filament at the intertwined part, increases relatively. When rubbed during the weaving and knitting process, it provides a large amount of resistance, which causes thread breakage and fuzz, which remains in the woven and knitted fabric and causes irritation. If there is, the rubbing resistance will be almost the same as that of the non-interlaced part, and even if it remains in the woven or knitted fabric, the interlaced part will not be noticeable. The ratio of interlaced parts is roughly related to the number of interlaces, and a certain range of the number of interlaces is required to withstand the high-speed weaving process. It turns out that it is difficult to find threads (.

Ta. In addition to the number of entanglements, it is also difficult to measure the entanglement angle θ of the interlace portions to find problem-free interlaced yarns, which is too time-consuming and cannot be done easily.

[Purpose of the invention]

The present invention has been made based on the above-mentioned background, and has excellent knitting and weaving properties even at high speeds, without leaving any intertwined portions in the woven or knitted fabric and causing irritation, and without generating fuzz or loops. The purpose of the present invention is to provide an easily obtainable entangled yarn with a small amount of entangled yarn.

[Structure of the invention]

The present invention is an interlaced yarn obtained by subjecting a synthetic fiber multifilament yarn to an interlace treatment, and the number of interlaces is 20 to 20.
In the range of 60 pieces/m, and the friction fuzz generation coefficient is 2.
．． The interlacing yarn is characterized in that the interlacing is 0 or less, and this structure achieves the above object.

The number of entanglements of the interlaced yarn of the present invention is a value obtained by the measurement method described above, and when the number of entanglements is less than 20/m, the cohesiveness of the interlaced yarn decreases, and untwisted and unsealed yarns cannot be manufactured. When it becomes unable to withstand the knitting and weaving process and exceeds 60 strands/m, the number of intertwined parts with a large entanglement angle θ increases significantly, making it easy for fuzz and thread breakage to occur in the high-speed weaving and knitting process. , especially in woven or knitted fabrics, intertwined portions become more noticeable. Since the number of entanglements is in the range of 20 to 60 yarns/m, the interlaced yarn of the present invention can withstand high-speed weaving and weaving processes without twisting or sizing, and the entangled portions may not be noticeable in woven or knitted fabrics. It disappears. However, even with interlaced yarns having a number of entanglements of 20 to 60 per meter, some may cause fuzz or yarn breakage during high-speed weaving and weaving processes.

Most of these entangled yarns have a fuzz generation coefficient of 2.0.
It's bigger. Therefore, the entangled yarn of the present invention has a number of entanglements of 20 to 60/m and a fuzz generation coefficient of 2.
．． By being 0 or less, it can withstand high-speed knitting and weaving processes without twisting or gluing, has little fuzz or thread breakage, and has excellent effects such that intertwined parts are not noticeable in woven or knitted fabrics.

The rubbing fuzz generation coefficient was determined by using a 50 denier/20 filament round cross-section polyester filament yarn as per USP 31.
The interlaced nozzle described in Figure 33 of Publication No. 10151 has a yarn speed of 1000 m/min and a nozzle front tension of 0.
．． 04 f/de, compressed air pressure to nozzle 2 Kg/cm
2, the interlaced interlaced yarn is used as a reference yarn, and the reference yarn and the interlaced interlaced yarn to be measured are connected to each other with a tip made of a wear-resistant material such as sapphire.
Yarn speed 100 m/mi on edges with sharp corners of °
n, under the conditions of tension 0.6 y/de immediately after passing through the edge contact, as shown in Fig. 1, and the number of fuzz of the obtained reference yarn and the intertwined yarn to be measured is measured using, for example, commercially available Toshi Engineering Co., Ltd. Fluff counter D's'-10 manufactured by Co., Ltd.
4 and measure each A. 'i/m and A ke/m, A
/Ao.

In addition, FIG. 1 shows an example of measuring the number of fluffs without rubbing, where 1 is an edge, 2 is a fluff counter, and Y is a standard or an intertwined yarn to be measured. Edge IK preferably uses sapphire, but is not limited to this, and
The number of fluffs may be measured in a separate process from rubbing, or may be measured visually. Even when visually inspected,
This is much easier than measuring the intertwining angle of intertwined parts.

The interlaced yarn of the present invention is obtained by selecting a yarn that satisfies the conditions of a number of entanglements of 20 to 60 per meter and a fuzz generation coefficient of 2.0 or less from among interlaced yarns that have been interlaced under different conditions. It is obtained by interlace processing using the obtained φ items. The fluid treatment nozzle described in Japanese Patent Application No. 86511/1988 is preferably used for this purpose, but it is needless to say that the nozzle is not limited thereto. Furthermore, multifilament yarns made of polyesters such as polyethylene terephthalate and polybutylene terephthalate, or polyamides such as nylon 6 and nylon 66 are preferably used in the present invention, but are not limited thereto.

〔Example〕

Hereinafter, the present invention will be further explained by examples.

Polyester filament yarns of round cross section of 50 denier/20 filaments were passed through various interlacing nozzles at varying pneumatic pressures to obtain highly entangled yarns. The number of entanglements and fuzz generation coefficient of the obtained interlaced yarn were measured. The friction fuzz generation coefficient was measured by the method shown in FIG. 1 using Sapphire Edge and a fuzz counter DT-104 manufactured by Toshi Engineering Co., Ltd. On the other hand, a plain weave was woven in a water jet loom at 600 rpm using the obtained interlaced yarns as warp yarns. The maximum warp tension during weaving is approximately 0.2
It was set to 551/ae. The number of fuzz of the obtained plain woven fabric was measured, and the irritation was evaluated. The above measurement and evaluation results are shown in Table 1. Note that the number of fuzz is the average number of fuzz that appeared on the surface of the weaving length after 106 beatings, and the irritation was determined visually.

Table 1 In Table 1, the intertwined yarns of dimensions 3 to 6 satisfied the conditions of the present invention, could be woven without any problems, had little fuzz, and did not show any irritation. On the other hand, the interlaced yarn-1 with a rubbing fuzz generation coefficient of 2.2 had a particularly large amount of fuzz, poor weavability, and noticeable irritation. Also, the number of confounds is 6
In No. 2, entangled yarn 2, fuzz was generated and the weavability was poor, but the irritation was particularly noticeable. Then, the interlaced yarn N with the number of interlaces is 18
No. 7 could not be woven due to insufficient convergence.

From the results in Table 1, it is preferable that the friction fuzz generation coefficient is 1.5 or less.

〔Effect of the invention〕

The interlaced yarn of the present invention is, for example, the interlaced yarn l11&lL in Table 1.
It can be obtained under the conditions of 4 to 5, has excellent knitting and weaving properties even in high-speed weaving and weaving processes, has little occurrence of fuzz, and can be easily rubbed with a reed or heddle in a water jet loom, for example. When rubbed, the intertwined parts disappear and no longer remain in the fabric, which has the excellent effect of not causing irritation to the woven or knitted fabric.

[Brief explanation of drawings]

Figure 1 is a schematic side view of the device for determining the abrasion fuzz generation coefficient;
FIG. 2 is a schematic side view of the intertwined portion showing the intertwined angle. l...Edge, 2...Fluff counter, Y
...interlaced threads.

Claims (1)

[Claims] Interlaced yarn obtained by interlacing synthetic fiber multifilament yarn, with a number of entanglements of 20 to 60 threads/m
An intertwined yarn which is in the range of 2.0 and has an abrasion fuzz generation coefficient of 2.0 or less.