JPS6128045A - Weaving of creped 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 (a) Field of Industrial Application The present invention relates to a method for weaving a crimped fabric using a water jet loom using nylon 6 multifilament false twisted yarn as the weft.

(b) Conventional technology Conventionally, the method of producing a crinkle fabric using nylon 6 multifilament false twisted yarn as the weft was to weave it on a normal shuttle loom, and then mechanically vibrate the resulting gray fabric in hot water. While giving
Then, the yarn is wrinkled by sufficiently developing crimp, yarn contraction, etc.
This is most commonly followed by intermediate tentering, heat setting, and then dyeing. On the other hand, when weaving using a water jet loom (hereinafter referred to as -0J, L), the resulting crimped fabric lacks the sharpness and uniformity of the grain, which severely limits its product use. It has been said that it is practically difficult to weave crimped fabrics using J, L, and J for wefts.The grains required for crimped fabrics vary depending on the use, for example, the coarseness and density of the grains. Requirements such as sharpness, evenness, and flow vary depending on hobbies and fields of use, and it is generally difficult to judge the quality of the grain, but as shown above <W, J, L
The weaving method has the fatal drawback that each of the grain shapes described above are insufficient.

(c) Problems to be Solved by the Invention As described above, the present invention provides that a crimped fabric woven using W, J, and L yarns using nylon 6 multifilament false twisted yarn as the weft has a sharp grain. This is an attempt to solve the problems of poor uniformity, etc.

(d) Means and action for solving the problems The present invention includes:
When weaving a wrinkled fabric using a water jet loom using nylon 6 multifilament false twisted yarn as the weft, after drying the gray fabric to a moisture content of 4% or less,
This is a method of weaving a crimp fabric, which is characterized by winding it around cross rollers.

In the present invention, the nylon 6 multifilament false-twisted yarn includes yarns spun at a normal spinning speed, drawn, and false-twisted, and so-called nylon 6 POY spun at a high speed of 3500 m/min or higher. Stretch.

The number of false twists of each false twisted yarn is 3400 to 360.
A yarn of 0 T/m is used. ' The present invention uses the above-mentioned nylon 6 multifilament false twisted yarn as the weft to weave a crimped fabric with -, J, L:, and the moisture content is reduced by the time the woven gray fabric is wound around the cross roller of the loom. It is characterized by drying to a level of 4% or less.

Of course, W, J, L, ``r'' use a water stream as a weft insertion means, so the gray fabric immediately after weaving is always in a moist state, and the moisture content just before being wound on the cross rollers is It is usually 10 to 15%, and therefore, the gray fabric wound on cross rollers needs to go through a drying process, and is generally processed in the order of drying, inspection, and shipping. In this case, the gray fabric wound around the cross rollers is left wound around the cross rollers for a considerable period of time (usually 5 to 10 days) until it is processed in the drying process.

By the way, under normal circumstances, gray fabrics woven using nylon 6 multifilament false-twisted yarn as the weft by W, J, and L yarns are wound on cross rollers for quite a long time until dried, as described above. It will be left as it is. That is, it is left under a certain amount of tension and in a moist state.

As a result, as time passes, crimping causes a so-called crimping fatigue reduction due to the influence of moisture, and even if gray fabric in this state is dried, it may cause problems such as poor width adjustment during the relaxing treatment stage in the subsequent process. This causes the problem that a sufficient graining effect is not achieved and grains with a satisfactory shape are not formed. These factors are thought to be one of the major reasons why only unsatisfactory grain shapes were obtained in the conventional crimped fabrics using W, J, and L nylon 6 cellulite filament false-twisted yarns as wefts. . According to the study of the present inventor, there is a close relationship between the grain form, gray fabric moisture content, and standing time of crimped fabrics woven by W, J, and L using nylon 6 multifilament false twisted yarn as the weft. If the moisture content of the gray material just before it is wound up on the cross rollers is the normal 10 to 15%, if it has been 12 hours since it was wound up on the cross rollers, even if it dries at that point, it will still have enough wrinkles in the graining process. If the cloth is used for a long period of time, it can no longer be called a crimp fabric and is of no practical use.

On the other hand, in the present invention, as mentioned above, the gray fabric is dried before it is rolled up on the cross rollers, and the moisture content is maintained at 4% or less before being rolled up on the cross rollers. Even if left for a long time, the fatigue phenomenon of crimping as described above does not occur, and the crimping effect in the subsequent process is fully exhibited, and wire fibers and articles with extremely good embossed morphology can be obtained. become. In this case, if the moisture content of the gray fabric exceeds 4%, the width adjustment during the relaxing stage will deteriorate significantly, and a good wrinkled crimp fabric will not be obtained.

In the present invention, the drying position of the gray fabric before it is wound around the cross rollers may be between the weaving area and the cross rollers, but it may be located near the winding device W, J, and L in Figure 1. As shown in the explanatory diagram of the section, the press roller (21, td
It is preferable to install a drying device (5) capable of simultaneously drying the entire width of the gray fabric (11) between the + and the cross roller (4). , an infrared heating method, a heated roller method, or the like may be selected as appropriate.

In the present invention, as described above, when weaving a crimped fabric using W, J, and L using nylon 6 multifilament false twisted yarn as the weft, after drying the woven gray fabric to a moisture content of 4% or less, By winding the gray fabric around the cross rollers, width adjustment and crimping are sufficiently performed in the subsequent process, and the effect is that a fine wrinkled woven fabric can be obtained. By keeping the winding tension as low as possible, preferably 2 or less of the total warp tension,
The effect of grain development can be further emphasized. In other words, even if the gray cloth is dried to a moisture content of 4% or less and wound around cross rollers, if the winding tension at that time is approximately the same as the total warp tension, it will be difficult to develop the problem at the gray cloth stage, and this will cause the product to deteriorate. It has been observed that there is a tendency to affect the appearance of grain, and if the winding tension is preferably 2 or less of the total warp tension, the appearance of grain at the greige stage will be better, and the grain shape of the product will be more uniform. So, the sharpness is reduced.

(E) Example Example 1゜Nylon 6 multifilament yarn 50D/12F for warp
using ordinary nylon 6 drawn yarn 70D/12F for the weft.
Using pre-combusted processed yarn (number of false twists: 3400 T/m), reed density was 82 threads/
Whale size.

Reed width 43 inches, weft density 107 threads/whale size, loom rotation speed 4
A plain weave fabric was woven with 2Or, p, m. Before winding the woven gray fabric onto the cross rollers, 40"c hot air is blown onto the fabric, and the moisture content is adjusted to 2.0% and 3.5% by changing the air volume.
It was dried and rolled up on cross rollers.

As a comparative example, in the above-mentioned example, the gray fabric was rolled up in the conventional manner without being dried at all, and the gray fabric was dried to a moisture content of 4.5% and then rolled up.

Each of the obtained greige fabrics was squeezed in hot water while being vibrated, followed by intermediate width adjustment, heat setting, and dyeing finishing. Table 1 lists the width increase rate and product evaluation results for each fabric.

Table 1 (Note) 1) Moisture content of gray fabric: A sample of the gray fabric was taken just before being rolled up on a cross roller, and the moisture content was determined based on the absolute dry weight of the fabric.

2) Width ratio: Indicates the degree of shrinkage relative to the gray fabric width. Width filling rate - (1 - Width after graining/grey @) X 100 3) Product evaluation: Sharpness and uniformity of grains were comprehensively judged with the naked eye.

◎...Very good, ○...Good, △...Slightly poor, ×...Poor As shown in Table 1, in the present invention, the width was sufficiently increased in graining compared to the comparative example. The grain shape of the product is sharp and uniform, making it a very good nylon 6.
A crimped fabric was obtained.

Example 2゜Nylon 6 multifilament yarn 50D/12F for warp
Stretched false twisted yarn 700/16F of nylon 6 multifilament yarn with a birefringence index of 0.040 x 16F obtained by spinning the weft at a speed of 4000 m/min using
(Number of false twists: 3400 T/M)
L, L-41 type, reed density 85 pieces/whale size 1 reed width 42 inches, weft density 107 pieces/whale size, l1li machine rotation speed 4
A plain weave fabric was woven with 2Or, p, m. Before winding up the woven gray cloth onto the cross rollers, warm air at 40"C is blown onto the cloth, and the moisture content is changed to 2.0%, 3.1%,
It was dried to 3.9% and transferred to a cross roller.

As a comparative example, in the above-mentioned example, the gray fabric was rolled up in the conventional manner without being dried at all, and the gray fabric was dried to a moisture content of 5.0% and then rolled up.

Each of the obtained greige fabrics was squeezed in hot water while being vibrated, followed by intermediate width adjustment, heat setting, and dyeing finishing. Table 2 lists the width increase rate and product evaluation results for each fabric.

As shown in Table 2, in the present invention, as in the case of Example 1, the width in graining was sufficiently increased compared to the comparative example, and the grain shape of the product was sharp and uniform. As a result, a very good nylon 6 crimp fabric was obtained, and in particular, the lower the moisture content of the gray fabric when it was wound onto the cross rollers, the better the grain shape of the product was obtained.

(F) Effects of the Invention As described above, the present invention uses nylon 6 multifilament false-twisted yarn as the weft and weaves it with -, J, L, and has a sharp and uniform grain and a wide range of It is possible to produce extremely good wire fibers that can be used for various purposes.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the main parts of the W, J, and L winding sections. (1)...greige, (2+, (til...press roller) (3)...waist roll roller, (4)...cross roller. (5)...drying device patent applicant Unitika Co., Ltd. Company Diagram 1 Procedure Amendment Form Stamp Button

Claims (1)

[Claims] (1) When weaving a crimped fabric using a water jet loom using nylon 6 multifilament false twisted yarn as the weft, the gray fabric is dried to a moisture content of 4% or less and then wound around cross rollers. A method of weaving a crimped fabric.