JPS61215746A - Weaving method of water jet loom - 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 uses crimped yarn as a weft yarn,
This invention relates to a jet loom weaving method.

BACKGROUND OF THE INVENTION In recent years, there have been significant advances in water jet loom weaving technology, but this has been largely due to the development of the loom itself and the filament yarns used. Moreover, recently, in response to the needs for product diversification, there has been a rapid increase in the production of textiles using crimped yarns for the weft.

Problems to be Solved by the Invention When such a fabric using crimped yarn as the weft is produced using a water jet loom having a false twisting spindle for weft running edge treatment.

There was a problem that cannot be ignored in terms of the quality of the fabric, in that weft pulling causes defects on the side opposite to the nozzle in the width direction of the fabric, that is, on the side opposite to the weft conveying nozzle. In view of this, we aimed to eliminate the drawback of weft pulling that occurs when weaving fabrics using crimping in a water jet loom.

・ As a result of intensive research, we found that the disadvantage of this weft pulling method is that by the time the surplus weft part is cut off, the twisting force of the false twisting spindle in the weft running edge processing device is applied to the weft yarn, and the crimp is stretched. The present invention was completed based on the discovery that this phenomenon occurs due to this phenomenon.

means to solve the problem In other words, the present invention uses crimped yarn for the weft.

Water machine with false twisting spindle for weft running edge processing
When weaving by jet loom.

The false twisting spindle rotation speed (times/min)/loom rotation speed (times/minute)
A water jet loom weaving method is characterized in that the ratio of 0.1 to 0.7 is used.

Below, nine detailed explanations of the present invention will be given.

In the present invention, what is a water jet loom having a false twisting spindle for weft running edge treatment?

This is a water jet loom equipped with a weft running edge capture and guidance processing device as shown in Japanese Patent Publication No. 39-29654, and its outline is shown in FIG. This processing device is an extremely excellent device in terms of restraint and removal of surplus weft portions.

Next, crimped yarn is defined as having a crimp elongation rate of 5-
200% yarn.

In the present invention, such a crimped yarn is used as a weft.

Water machine with false twisting spindle for weft running edge treatment
In a jet loom weaving method.

This weaving method is characterized in that the ratio of false twist spindle rotation speed (times/minute)/loom rotation speed (times/minute) is 0.1-0.7.

Here, the ratio of false twist spindle rotation speed (times/minute)/loom rotation speed (times/minute) will be explained with reference to FIG. The false twisting spindle 5 is rotated by power being transmitted through a pulley 6 and a pulley 7. Usually, this ratio (revolutions per minute of the false twisting spindle 5)/(revolutions per minute of the loom) is in the range 0.8-1.2. When weaving using filament yarn for the weft, there is no problem with the ratio within this range, but when weaving using crimped yarn for the weft, the excess portion may be cut off after the weft is beaten. During this time, the twisting force of the false twisting spindle is applied to the weft yarns until 14!
The shrinkage is stretched, and the weft tension causes defects.

In the method of the present invention, the false twisting spindle rotation speed (times/min)
By setting the ratio of /loom rotation speed (rotations/min) to 0.1-0.7, the twisting force of the false twisting spindle applied to the weft is placed under the force plate where the crimp of the weft is stretched. Drawing can eliminate shortcomings. On the other hand, if the ratio of false twisting spindle rotation speed (times/min)/loom rotation speed is less than 0.1, the excess weft portion cannot be removed, impairing the effectiveness of the weft running edge processing device.

The present invention will be explained in more detail below using examples.

Example 1 Failledecine was woven using a water jet loom model ZW-100 manufactured by Tsuda Ceramics at a loom rotational speed of 45 Or, p, m. The warp was made of polyester filament 50d/36r, and the weft was made of 150d/96f polyester first-twisted false twisted yarn with a crimp elongation rate of 7%.

Then, as shown in Fig. 2, pulley 6, pulley 7
Weaving was carried out by changing the rotation speed of the false twisting spindle 5 by changing the diameter of the fabric, and the weft drawing was graded based on the evaluation contents shown in Table 1 on the defect level.

The results are shown in Figure 1. As shown in FIG. 1, when the ratio of false twisting spindle rotation speed (times/minute)/1a machine rotation speed (times/minute) is 0.8 or more, which is within the conventional range.

Although the drawback of weft pulling is very noticeable, 9.0.0 is within the scope of the present invention.
At 1-0.7, the defects were slight, and at 0.4 or less, no defects were observed.

Table 1 Weft draw defect level and grading Example 2 Single woolly taffeta was woven using a water jet loom model LW-51 manufactured by Nissan at a loom rotation speed of 48 Or, p, m. Polyester filament 75 for warp
d/36f, and polyester false twisted yarn 100d/48f with a crimp elongation rate of 17% was used for the weft. and.

Weaving was carried out in the same manner as in Example 1 while changing the rotational speed of the false twisting spindle, and the defect level of the weft yarn was evaluated. The result is the first
Shown in the figure. The residual false-twisting spindle rotation speed (
(times/minute) / loom rotation speed (times/minute) is 0 within the conventional range.
．． If the value is 8 or more, the defects are noticeable for weft yarns, but 2. Within the range of 0.1-0.7 of the present invention, the defects are slight for weft yarns, especially if it is 0.6 or less, there are no defects at all, and the quality of the fabric is poor. Significant improvement.

Effects of the Invention According to the method of the present invention,9 without impairing the effectiveness of the weft running edge capturing and guiding treatment device that most water jet looms usually have, and without major modification of the loom, For weft yarns, it is possible to produce fabrics with no defects.

Particularly, when the weft used is a thick denier yarn, there is a remarkable effect.

[Brief explanation of drawings]

FIG. 1 shows Example 1. The data obtained in Example 2, ie, the influence of the ratio of false twist spindle rotation speed (times/minute)/loom rotation speed (times/minute) on fabric quality. FIG. 2 shows a schematic diagram of the weft running edge capturing and guiding processing device. 1... Reed 2.3... Yarn end treatment system 4... Weft thread 5... False twisting spindle 6.7... Pulley

Claims (1)

[Claims] When weaving using a water jet loom that uses crimped yarn for the weft and has a false twisting spindle for weft flying edge treatment, the number of rotations of the false twisting spindle (times/minute)/number of rotations of the loom (times/minute) A water jet loom weaving method characterized in that the ratio of