JPS5842295B2 - How to weave interlaced yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a weaving method in which warp lines are less likely to occur when interlaced yarns are used as warp yarns, and the weaving operation rate is high.

In order to efficiently perform weaving and obtain high-quality fabrics, the warp yarns used in the weaving process are required to have a high degree of cohesiveness.

Conventionally, yarn twisting or sizing has been applied to impart conjugation properties, but this can damage the fibers and significantly increase costs, so reducing costs by simplifying the process has been a major concern. Ta.

For this purpose, attempts have been made to use, as warp yarns, interlaced yarns that are treated with fluid to cause entanglement between the fiber filaments, thereby imparting cohesive properties and imparting properties similar to true combustion or sizing.

Use of such an interlaced yarn has the advantage that not only can the sizing process be omitted, but also no desizing is required after weaving, and the scouring and dyeing process can be simplified.

On the other hand, when interlaced yarns are used as warp yarns, there is a drawback that crack-like streaks are more likely to occur in the warp direction of the fabric than when ordinary conjugated yarns coated with a sizing agent are used as warp yarns.

The present inventors believe that the disadvantage in the quality of the fabric due to warp lines is that tie points that are entangled with the strength of the interlace yarn used as the warp exist on the woven fabric as they are, and this is due to the slight difference between the warp yarns. It has been found that this tendency is a cause of uneven spacing, and is particularly noticeable when yarns with a high degree of interlacing are used as warp yarns.

In order to prevent this crack-like warp, the degree of entanglement of the warp interlace yarn is set to 5 to 28 threads/m.
Furthermore, the present inventors have discovered that by twisting the interlaced yarn and weaving a weaving beam that is created with a tension within a specific range in the weaving preparation process, it is possible to prevent a decrease in the weaving operation rate, and have thus arrived at the present invention. .

That is, in the present invention, the degree of interlace by the hook drop test of the pirn wound is 5 to 28 strands/m, and the number of twists is 16. t/JKT7m ~125. o7J7;, T
/ m of interlaced yarn (however, the denier of the chain yarn is ADe) is unwound to give 0.2. This is a method for weaving interlaced yarn, characterized by weaving using a weaving beam under a tension of l/De or less.

The interlaced yarn having the above interlacing degree in the present invention can be obtained by optimizing the conditions at the time of interlacing according to the description in Japanese Patent Publication No. 36-12230, and furthermore, the interlaced yarn can be obtained by The yarn is heated by a twist winder and then wound into a pirn, and it is especially preferable to wind the twist immediately after the interlacing process is completed.

The degree of interlacing is measured by the hook-drop test.

This test is explained as follows.

That is, the multifilament yarn has a denier of 0.
．． Suspended vertically under the tension provided by the weight of 20 times the duram (but not exceeding 100 g), the total weight in grams equal to the average denier of the single yarns making up the chain yarn (but not exceeding 10 g) Insert a hook with a strand (not shown) into any part of the chain string, lower the hook at a speed of 1 to 2 cII'Vsec, and stop at t()'C when the hook cannot be lowered. P is determined, and the same hook drop test as above is repeated from immediately below this stopping point, and the number of stopping points is measured based on 1 m of the chain yarn, and this number is defined as the "degree of interlacing".

Therefore, the unit of interlacing degree is ke/m.

In the present invention, in order to create a weaving beam (preparation for weaving), a warper beam (roughly wound beam) is wound once using a commonly used warping machine, and several warper beams are overlapped and re-wound to weave. There are two methods: creating a beam, and winding a warper beam using a sectional warper and rewinding it to create a weaving beam.In either method, the yarn is unwound from the pirn. The tension i0.23g/De is limited at all running yarn positions and beam winding time 9 starting from
below).

When preparing conventional sized yarn for weaving, sizing is at least zero during the process or during the drying process provided immediately thereafter.
．． Although a tension of 25 g/De or more was required, in the present invention, such conventional conditions for gluing using thread cannot be applied at all.

In other words, if the heated interlaced yarn is taken from the pirn with a tension exceeding 0.23 g/De, the degree of interlacing will be extremely reduced and fuzz and yarn breakage will occur during the weaving preparation process, causing the weaving to fail. Similar troubles occur from time to time, reducing the operating rate during weaving.

In the present invention, the degree of interlacing of the pan is 28/
If the interlacing degree exceeds m, crack-like warp lines will occur frequently, which will significantly reduce the quality of the fabric.On the other hand, if the degree of interlacing is too low, the binding force of the threads will be insufficient, and the guide will not work properly in the weaving preparation process. If it comes into contact with such things, fuzz and thread breakage will occur, and even during weaving, fuzz and thread breakage will occur frequently, reducing the weaving operation rate.
m or more is required.

The number of twists of the interlace yarn wound around the pirn is 16.
7 /v/XT/m to 125.0/AT/m; however, if it is less than 16.7/JKT/m, the binding property of the yarn will be low and the weaving efficiency will decrease. o/7
If it exceeds XT/m, crack-like streaks will appear in the fabric, degrading its quality.

For example, the required number of twists for a 70De interlaced yarn is 16
．． 7/v/T6 T0n ~125. o/JTTyT
/ m, so it can be said that it is about 2 T/m to about 15 T/m.

Regarding the relationship between the required degree of interlace and the number of twists, it is generally desirable that the number of twists be large when the degree of interlace is small.

In order to obtain a yarn with a twist number of 2 to 15 T/m using a ring twisting machine, the spindle rotation speed (RrPm) and the winding speed (
The ratio (R/V) to Vm/min) may be set to 2 to 15.

The warp used in the present invention is a multifilament, and suitable filaments include polyester, polyamide, polyacrylic, acetate, and the like.

In addition, there are no particular restrictions on the number of filaments, denier, etc. in multifilament, but usually single fiber denier is 1 to 5 denier, and the number of filaments is 8.
A multifilament of ˜48 is preferred.

The loom applied to the present invention may be a shuttled loom or a shuttleless loom.

Since the present invention is made as described above, it not only has the advantage that weaving can be carried out without the sizing process, and also the desizing process can be omitted during dyeing.
It is possible to provide a woven fabric with high weaving efficiency and high quality.

The present invention will be explained below with reference to Examples, and the numerical values used in the Examples to indicate the degree of meridionality are determined by visual judgment of 91.
The results were graded from grade to grade 5 and expressed as the average value.

In addition, grading was performed according to the following criteria.

1st grade: Not noticeable at all 2nd grade: Slightly noticeable 3rd grade: Slightly noticeable Example 1 Melt-spun and drawn nylon 70De/16fi1 was di-interlaced using a fluid nozzle using a conventional method, and then twisted using a ring twisting machine with a spindle rotation speed of 800 rpm. It was wound up at a speed of 1000 m/mm.

The fluid nozzle has a yarn path diameter of 2. Omw, yarn path length 2.0m7
L, the diameter of the compressed air injection hole was 1.0 mm, and various types of interlaced yarn pirns were obtained by varying the pressure.

The number of twists of each yarn was 8 T/m.

Next, each interlace yarn was subjected to a normal warping operation to create a warper beam with an unwinding tension of 49 g (0.06 g/De), a winding tension of 10 g (0.14 g/De), and a warper beam delivery tension of 12 g. (0,17
,9/De), and the winding tension is 13g (0,19g ID
e) was used as a weaving beam to serve as a warp, and a taffeta weave was woven using a water jet loom.

The conditions during weaving were the same as in the normal method.

The weaving operation rate and fabric quality (warp) at this time are as shown in Table 1.

Comparative Example 1 After interlace treatment was performed under the conditions of Example 1 by variously changing the left air pressure, the yarn was wound on a drum without twisting without using a twisting machine, and the yarn was woven under the same conditions as Example 1. The results shown in Table 2 were obtained.

Example 2 In experiment N15 of Example 1, the winding tension during warping was set to 0.21! ? /De and others were subjected to a weaving test according to Example 1, and as a result, the quality of the woven fabric was first class, and the weaving operation rate was 82%.

For comparison, in this experiment, the winding tension during warping was set to 0.25.9/DeO,30,! ? /De,
Although the quality of the woven fabrics was 1st class, the weaving operation rates were 75% and 63%, respectively, which was inconvenient for practical use.

Claims (1)

[Claims] 1 The degree of interlace is 5 to 28 strands/m and the number of twists is 16.7/m according to the hook drop test wound on 1 pirn.
Unravel the interlace yarn of v'XT/m ~ 125.0/JXT/m (however, the denier number of the chain yarn is ADe) and create a weaving beam under a tension of 6.239/De or less. A method for weaving interlaced yarn, which comprises weaving using the weaving beam.