JPS5959942A - Production of staple fiber 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 The present invention relates to a method for producing staple fiber fabric using a fluid weft insertion type loom.

In recent years, with the aim of streamlining the weaving process, ultra-high-speed looms that use fluids such as high-pressure water jets and gear rears have been introduced in place of the conventional shuttles, which have been lacking in efficiency. When weaving processed yarn,
C raw I Jr sex + ge' [say.

However, when short fibers are woven using such a loom, troubles such as loose threads and clogging of the guides occur frequently, and in the case of long fibers, problems such as σ) are not effective as a means of improving productivity. Difficult.

On the other hand, one cause in the market is becoming more and more oriented towards natural textures. It's a big problem for me to separate from the weaving.

The purpose of the present invention is to solve such points Kv:1-1p, IPjl
#! This paper proposes a method for producing short fiber fabrics that can be woven using an ultra-high-speed fluid loom to the same degree as filament yarn.

That is, in the present invention, the short fiber bundle is discharged by a part of the front M f8 string, and the selected #υ fibers are wound in the S twist direction and B twisted in the 2 twist direction. -ti
Short line 11 formed over 1 minute or the entire length
1 wound yarn, the short fiber 4V: the wound yarn is in a single yarn state,
The method for producing a 2F staple fiber fabric is characterized in that it is woven using a fluid-filled yarn insertion type loom with a small amount of weft.

”Jl, the present invention will be explained in detail in i+111 VCit.

CIT - Diagram used in the present invention method - Short version (4th edition)
7 (similar σ),'! 11! How to make it Iha 0) -・Example 1
In a process diagram, 1 is the element A-(and γ, (stone tow,
Or a sliver.

The fleece is cut or drafted between the rollers 2 and 3 (7), and the fiber is temporarily pressed with the air swirling nozzle 4. 3. The material tow or sliver 1 is supplied in a wide range after passing through the roller 5 and wound around the wafer 6. At this time, the fibers taken up by the roller 3 always pass through the same place. 1. It changes randomly, so when you forcibly twist it with 4 turns, the twisting point A changes from i'l:J h"+ left and right @1-<. , Therefore, the state of the fiber Xjt that is collected from the surrounding area is constantly changing, and the resulting yarn is as shown in Figure 2 (searching tf
&, There are two types 8 in which the fiber outlet direction is 2-twist direction and 9 type in S-twist direction, and both of these winding fibers t are interposed. , -fitt, or the entire length of the short fibers 4V: is obtained.

Figure 2 is a perspective view showing an example of Ishichisen Kanmaki used in the method of the present invention.

This type of short wire cord winding has outlet fibers in two directions in this thread, so even if it is woven with a fluid injection type loom, the outlet is square or 1+, so that the yarn can be easily pulled out. The I phenomenon does not occur, and there is little dropout of the short line IF (・.

In order to ensure such an effect, it is necessary to use - [71] The presence of the above-mentioned converging structures at at least 5 or more locations, preferably at least 20 locations, relative to the fiber length of the short fibers. is desirable. For this purpose, as mentioned above, it is desirable to spread the supplied fibers as much as possible so that the false twisting and twisting points vary, and to create a state in which the presence of the single fiber kIF around the camellia is constantly changing. In the same sense, it is better to use a sliver as the feed material 1 and forcefully pull it between the rollers 2 and 30 to cut it into pieces. The change in direction of rotation is large, and the convenience is μ.Similarly (deteko σ), the trough 1 between 1 and ter is also set to a large magnification of 20 times or moreJ, and the fibers on one side are disordered and the rod fzi ”, 1 koku change.

Furthermore, to explain the focusing structure in detail, the location t
H-style, body-weft insertion type looms use a sieve instead of a shuttle to feed the threads into the jetted water or air stream! When weaving in the weft yarn, at that time, weaving the filament of long fibers) yarn spear 11
In the case of machine yarn, the yarn is conveyed smoothly (a), but in the case of single yarn, the yarn is unraveled during the conveyance of the H yarn (cutting of the warp yarn or chiming). (4) If we look closely at this phenomenon, unlike shuttle looms, the tip of the thread is always free, and there is no torque on the thread. When the jet fluid rotates and flies, the twists in the spun yarn unravel, creating areas where the strength of the yarn is low, which pulls out easily and causes the yarn to become tJJ jl. In addition, in general, when weft insertion is carried out by jetting a fluid, a certain amount of swirling force is applied no matter how precise the weft insertion is. Yes, there must be one si ゛1.1-j 7) σ), and during this time, even if the 51 is avoided, σ ``(・.

Furthermore, even if the twisting is untwisted, the surface fibers 1 will be blown off by the high-speed fluid and fall off, or the surface fibers 2 and 2 (untwisted) 1 will separate and become stuck in guides etc., causing thread breakage. becomes. In particular, in so-called water jet weaving, which uses water as the fluid, the short zelkova fibers that have fallen off by one minute are blown away by the water, so they can be removed easily by the guide, etc.
(-da, Of course, these problems can be greatly improved by changing the twin yarns of spun yarn to river ℃・ζ)ηI, but if you want to make thin fabrics or low-cost fabrics. When you want a one-sided system, use t,lL
However, in all cases, it is not possible to make do with double thread.

In spite of the fact that 1.1 wheels are available in the market, and the yural texture is oriented, it has been very difficult to weave staple fibers with conventional fluid weft insertion type looms. However, we have conducted various studies regarding this point.17. As a result, short fibers were conjugated using a winding method, and the surface layer was 1-4? g
As the pulling direction, the S scooping direction and the Z scooping force direction σ] were also included in a) and the outlet was engaged.'>, ii ffl・l
It has been found that when using the same type of navy blue yarn, fluid weft insertion type weaving of short fibers is possible with a single yarn without any problems. In other words, I don't know why, but I'm afraid C]<j',,) for such a structure! How is the rotational force associated with the fluid jetting (fpl)? (I think it's for the sake of becoming Jl().

−', )j, fl'! Figure 3 shows an example of the method for manufacturing a short wire in which the L-wound fibers have a unidirectional twist σ. The varnish sliver 11, which is thinner than the straight bar 1, is drafted by the rollers 12 and 13, and then the varnish sliver 11, which is thinner than the straight bar 1, is drafted by the aspirator. In step 14, the yarn is guided to the false twisting point and attached to the surrounding area to actively form stable twisted fibers. Twisted short fiber wound yarn (
(), but this thread is woven on a fluid-jet one-man loom.
Roto.

Co-rotating forces tV and t generated during fluid injection σ) happen to have the same rotational direction, and a point where the co-rotating force slackens and the thread slips out occurs.

For example, in the following experiment, the yarn shown in Figure 2 and the Go yarn and conventional spun yarn shown in Figure 4 were woven using a 1" t1 manual loom with a fluid injection (and the weavability conditions at the time). This is an example of the following.

Trial It A 4 (1 (1
01) e After cutting the polyester tow at a magnification of 30 times and a speed of 2 U OmM at ℃,
False twisting was carried out using a pressure air swirling nozzle at °C to obtain one turn of short fiber yarn of No. 40. The average fiber length of the short fibers obtained by the above-mentioned stretch cutting was 320 m, and the number of points of the bundled structure part in the average fiber length was 47.

Trial A [B Figure 1e] Using the clay rod shown in Figure 1, the supply material 1 was made from polyester fibers with an average diameter of 76 mm.
,'f 71 S'i bar (+1.44 Ilem
), 30 times the 1-rough I (world (7) change the first step to a two-stage draft) schiff, I (l Twisting was carried out to obtain 40 count σ) short fiber wound yarn.The average fiber AiF
There were an average of 8 focusing features per 76 mm length.

Sample C is shown in Figure 3 - In the J process, the cumulative supply month is 71 with an average fiber length of 7 fi 111111! Souvenir ((14p/+++)t made of polyester fiber
For r river, also the cumulative supply month is 11 and the average fiber length is 76
Roving made of mn+ polyester fiber (o
, 04 g/m), and
Raft (However, the process in Figure 3 is changed to 2 stages) - Last method) L, I kqAA pressure As) Rake-1
4, temporary printing was performed using the air swirling nozzle 4 with a pressure of 3 kg/m.

1 (l LJ m/+I・n) No. 40 short fiber wound yarn was obtained. This a m irt koshira yarn similar type, bundled structure, q1 part σ) location had an average tMl fiber length of 76 mm.
However, almost 31 measurements were not taken.

Sample D Polygonal short rT# fibers with a fiber length of 76 rnm were fabricated using a conventional spinner. A spun yarn with a count of 4 () was prepared using H. The number of twists of this spun yarn was 620 T/m.

Sample E Polyester fiber + 501) c + ノ) Woolly addition - "Using thread.

Weaving conditions Loom: Water speed: 3 s o Ilem diameter Thread: polyester filament) - system (+001)
e) Weaving results As shown above, even short fiber-wound yarns can be made into yarns using the wrap-around method in which yarns in both the welding direction and the welding direction are mixed, resulting in FY.
Processed yarn and different 1. Thread insertion type using cool fluid jet #! Astonishing results were obtained with the weaving performance of the machine, and the natural-feeling fabrics of Subanta Tsuji were produced in a very rational process. Toi.

[Brief explanation of the drawing]

Figure 1 shows U filter ir to H14re used in the method of the present invention.
Fig. 2 is a process diagram showing an example of a method for manufacturing thread threads, and shows the short tP11 used in the present invention. The third figure is a perspective view showing an example of a wound yarn, the third figure is a process diagram showing a method of manufacturing a similar type of winding yarn in which the twisted fibers are twisted in only one direction, and the fourth figure is a process diagram showing the same type of winding yarn as shown in Figure 3. It is a perspective view which shows the 1st short fiber winding yarn obtained by the process shown. 7... Short fiber wound yarn 8.9 ... Wound fiber patent applicant Teijin Ltd.

Claims (1)

[Claims] A short fiber bundle is wound by a part of its surface layer fibers, and the wound fibers include those wound in the S-twist direction and those wound in the Z-twist direction, and both of the wound fibers are wound in the S-twist direction and those wound in the Z-twist direction. The short fiber-wound yarn is made into a yarn with a single winding of short fibers in which the bundled structure part (E) is partially or completely formed along the yarn length direction, and the short fiber-wound yarn is made into a single yarn for a few liters ( 1. A method for producing a short fiber woven fabric, characterized in that the weaving is carried out on a fluid weft insertion type loom using at least weft yarns.