JPS6042312B2 - Method and device for warp sizing and fluffing of spun yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves sizing sheet-like warp yarns in which a large number of spun yarns are arranged in parallel all at once, and when feeding the sheet-like warp yarns to a dryer or the like, the fuzz of the spun yarns after sizing is turned down, A warp sizing fluffing method and device for preventing yarn breakage due to fluffing, etc., ensuring smooth running of sizing yarn, improving weaving efficiency during subsequent weaving, and promoting high quality textiles. It is related to.

Conventionally, thread is pulled out in parallel sheets from a beam stand with a large number of beams arranged, passed through a guide roller, an immersion roller, and a sizing tank consisting of a squeezing roller for sizing, and then wet-divided. The warp sizing method, in which the material is introduced into a dryer and dried, and then divided and wound up, is well known and has been widely used.

However, it has been found that the above gluing method has the following drawbacks.

In other words, if the warp threads running in a sheet form are coated with size liquid,
The fuzz on the yarn surface adheres to each other by the size liquid and swells, and this causes the swells of the adjacent warp threads.
This prevents yarn separation, induces yarn breakage, and may generate static electricity in the case of spun yarns containing synthetic fibers. and,
This is especially true in the case of air jet looms, which have continued to develop in recent years, with their special characteristics of high speed and jet air weft insertion, and the special nature of shedding in jacquard looms, which impede the smooth shedding of warp threads. As a result, the weft insertion does not proceed smoothly, resulting in an adverse effect on the quality of the fabric.

Therefore, although warp fuzziness is extremely important in order to achieve smooth loom shedding and high quality textiles, no good means have been found to date to solve this problem. .

In view of the above-mentioned circumstances, the present invention has been arrived at as a result of intensive research in order to eliminate these drawbacks. Immediately after pasting, the present invention has been developed by creating an appropriate film on the surface of the brush bristles with water or an oil dispersion. , when the glued thread runs between the brush bristles,
Even if the thread is rubbed by the brush bristles, the size liquid attached to the thread separates and does not adhere to the brush bristles, and the fuzz of the sized spun yarn adheres to the brush bristles due to the adhesive force of the size liquid and accumulates, preventing yarn breakage. The purpose of this invention is to use the bristles planted on the brush to slide the fluff of the sizing yarn in a way that does not induce such problems, and to improve the separation of the yarn.

That is, the feature of the present invention is that a size liquid is applied to the sheet-like warp yarns pulled out from a large number of beams, the sheet-like warp yarns moistened by the size liquid are dried, and the warp yarns are wound onto the yarn beams of a loom. In the sizing process, the moist sheet-like warp threads immediately after sizing are slid onto the bristles of a rotating brush roll whose bristles surface is appropriately coated with a liquid such as water or an oil dispersion while the roll is rotated. The method is to make the surface of the glued yarn fluffy.

Another feature of the present invention relates to an apparatus for carrying out the above-mentioned method, in which water or an oil dispersion liquid, etc. liquid bath containing and elastic recovery properties. The lower half of the brush bristles are immersed in the liquid in the tank, and the elasticity of the bristles is used to splash off the excess liquid adhering to the surface of the bristles. A rotating brush row for running glued threads with a liquid splash guide that creates a film with moisture! The point is that a fluffing device consisting of a fluffing device is provided.

Here, the most important point in the present invention is that the brush bristles are immersed in a dispersion of water or oil (for example, a surfactant) in a liquid tank while rotating, and that the liquid is attached to the surface of the bristles using a liquid splash guide. Using the elasticity of the brush bristles, the excess liquid is splashed away, forming brush bristles whose surface is appropriately coated with a liquid film, on which the glued sheet-like warp threads slide. There is a thing. Therefore, first of all, it is preferable that the brush bristles planted on the outer periphery of the brush roll be made of synthetic fibers that are strong and have excellent elastic recovery properties, and are also hydrophobic, such as vinyl chloride fibers, polypropylene fibers, etc. etc. are generally preferred.

Moreover, it is important that the brush roll is rotatable as described above, and the brush bristles are preferably implanted in the axial direction on a cylindrical brush body, but the implantation positions are different between adjacent rows of bristles. It is effective in terms of planting design to have the plants offset from each other. If the brush is fixed, as the glued thread slides, the glue will gradually stick to the brush bristles, and this will accumulate and have a negative effect, so it will constantly rotate and It is important to have the opportunity to come into contact with new liquids. This is why the lower half of the brush roll is constantly immersed in the liquid while rotating. In this case, the number of rotations of the brush roll does not need to be too high; too high a rotation speed is undesirable both from the viewpoint of liquid retention and from the sliding surface of the running sheet-like warp threads. A gentle rotation is preferable.

For example, when using a brush roll with a diameter of 14 cm for warp yarns running at approximately 501 n/min, which depends on the running speed of the sizing yarn, approximately 1 m/min per 5 minutes varies depending on the viscosity of the sizing liquid, the type of yarn, etc. A rotation rate of about 100 times is sufficient. It should be noted that the use of brush bristles for the above-mentioned fluffing is extremely effective in removing the sizing liquid that has adhered between the sizing yarns.

In addition, the amount of liquid attached to the surface of the brush bristles that slide the sheet-like warp threads running in parallel is also a condition for enhancing the effect of the present invention, and if it is too large, the size liquid will peel off and the size will not stick. inhibit the effect. However, if it is not added at all, it will have the drawbacks seen in the past. Therefore, the elasticity of the brush bristles is used to splash off excess water, thereby maintaining an appropriate amount of liquid film on the surface of the bristles. In order to do this smoothly, a liquid splash guide is provided.
As the bristles of the brush roll rotate, they are attached to the position where they leave the liquid in the liquid tank. In particular, when installing the fluffing position, it is better for workability to cover it with a cover or the like or to make it removable so that the brush bristles do not get in the way during the preparation process. .

It is preferable that the rotation of the brush roll is linked to the sizing machine via an appropriate speed reduction device and that the speed can be changed.It is also desirable to provide a guide roll or the like to adjust the position where the sizing thread bites into the brush bristles. It's by design. On the other hand, it is also important to consider that the water or oil dispersion in the liquid bath can be circulated during the piping process, and the length, thickness, elastic modulus, etc. of the brush bristles, and the flocking density, The flocked shape and the like are appropriately selected depending on the fineness of the sizing thread, the density of the sizing thread, the material, etc.

Hereinafter, specific embodiments of the method of the present invention will be further explained together with examples of the apparatus of the present invention shown in the accompanying drawings.

FIG. 1 is a schematic diagram showing the entire apparatus for carrying out the method of the invention. FIG. 2 shows an example of a fluffing device which forms the essential part of the present invention.

Moreover, FIG. 3 is an explanatory diagram showing an enlarged view of the fluffy aspect.

In FIG. 1, a large number of parallel sheet-like warps W drawn out from a plurality or a large number of beams 2 arranged on a beam stand 1 via a guide roller 3 are equipped with an immersion roller 5 and squeezing rollers 6 and 7. Enters the sizing tank 4, where sizing liquid is applied to the next wet dividing rods 8, 8.
It is divided into upper and lower stages by ', and passes through the fluffing devices 9, 9'', which are the main part of the present invention, and the biting of the glued warp yarns W into the brush bristles is controlled by the biting adjustment guide rolls 10, 1''. It is adjusted and introduced into the following dryer 12 via guide rollers 11.

Then, it passes through an afterwaxing section 13, a dividing section 14, a guide roll 15, and is wound onto a yarn beam 16 of a loom.

Note that other methods such as spraying may also be used for gluing.

FIG. 2 shows an example of the fluffing device 9 or 9'', which is the most important part in the device consisting of the above-mentioned series of steps. A rotating brush roll 21 having brush bristles 23 with excellent properties is used to absorb a liquid 25 such as water or an oil dispersion.
When the brush bristles 23 rotate to the lower half side in the liquid tank 24 containing a Immediately after it is pulled up from the inside and separated from the liquid, the excess liquid adhering to the surface of the brush bristles 23 is splashed off using the permeability of the bristles 23 to form an appropriate liquid film on the brush surface. A liquid splash guide 26, for example a rod, is provided to hold the liquid.

The wet dividing rod 8 shown in FIG. 1 and the guide roll 10 for biting adjustment are arranged on both sides with the rotating brush roll 21 in the middle, and the brush bristles 23 of the warp yarns W passing through the brush roll 21 are arranged on both sides. The degree of penetration into the hole is adjusted.

Of course, in FIG. 1, the fluffing devices 9, 9'' are located at the rear of the wet dividing pads 8, 8'', but they may be provided at the front side.

However, as shown in the figure, it is generally considered more preferable to arrange it on the rear side. When the sizing warp yarns W are made to slide through the fluffing device using the apparatus of the present invention installed as described above, the liquid film 27 on the surface of the brush bristles 23 is schematically shown in FIG. forms an interface between the brush bristles 23 and the sizing warp W, and the sizing warp W is rubbed between the bristles as the brush bristles 23 rotate, and the fluff 28 is adhered to the surface of the sizing warp W, and the liquid film 27 As a result, the sizing agent of the sizing liquid of the sized warp yarns W is separated and does not adhere to the brush bristles 23, and therefore the fuzz and fluff of the sized warp yarns adhere to the brush bristles 23, accumulate, and cause yarn breakage. It does not cause any problems or interfere with driving.

Furthermore, the brush bristles 23 themselves have excellent elastic recovery properties, so if excessive resistance is applied to the bristles, the bristles will escape from between the sizing warp threads due to their elasticity, causing thread breakage in this area. Never. This proves that it is also effective for special weft insertion such as air jet looms. Thus, according to the present invention, the problem of fluffing of sized yarns, which has conventionally been a problem during weaving, can be solved, and the disadvantages can be solved and the fluffiness of warp yarns can be achieved, which has significantly contributed to the commercialization of woven fabrics. be effective.

In particular, the effect is remarkable in the case of air jet looms, which have special characteristics such as high speed and weft insertion using jet air, or the special characteristics of the shedding of jacquard looms, and their effectiveness in optimizing the efficiency of the weaving process. is highly anticipated. Below, examples will be presented in which the fluffing effect of sized yarn is compared with that of conventional sized yarn when carried out on various materials where fluffing is a problem.

(Example) Sheet-like warp yarns made of various types of spun yarns, which will be described later, pulled out from nine beams were glued according to the apparatus shown in FIG. Using the provided brush roll, apply the sized thread at 50r11/min.
While running the brush roll, the brush roll is immersed in a water tank while being rotated slowly at a rate of about once every 5 minutes, and excess water is splashed off with a liquid splash guide, and the running glued warp threads are slid thereon. After that, in the dryer 100 to 120
It was dried at ℃ and wound onto the yarn beam of a loom.

Next, the same types of yarns as described above were sized and dried under the same conditions using the apparatus shown in FIG. 1, except that the fluffing apparatus was not included, to obtain sized yarns according to the conventional method.

The number of fluffs per meter of sized yarn (fuzz index) of both of these sized yarns was measured using a fluff counter manufactured by Toray Industries, Ltd., and the following results were obtained.

Note that the fluffing effect of the present invention is calculated according to the following formula. Same as below (B) Tetron (Zairoku Trademark Hemp Blend 3Q I count sizing yarn (C) Woolen type polyester 100 (f) 1/5
2. Sized thread (d) Tetron (trademark)/cotton blend 45/1st sized thread In each of the above (a), (c), (c), and (d), the conventional sizing thread and the sizing of the present invention Reference photos (a), (mouth), (c), (d) show comparison with thread using microscopic photographs.
1 and 2, respectively.

That is, the reference photos (E1) and (E2) are the same as the above (A).
The conventional sized yarn (E 1) and the sized yarn according to the present invention (E 2) are shown in FIG. , the sizing thread of the present invention (Ro 2), and the reference photos (Har 1), (Har 2)
) is the conventional sized yarn (Har 1) and the sized yarn of the present invention (Har 2) in (c) above, and the reference photos (nee 1), (
Knee 2) is the conventional glued yarn (knee 1) in (d) above.
, respectively show the sizing yarn (knee 2) of the present invention. As is clear from these reference photographs, the sized yarn according to the present invention has
The fluffing effect is significantly improved compared to the conventional method, and the effects of the present invention described above are fully verified.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic diagram of an apparatus for carrying out the method of the present invention;
FIG. 2 is a schematic view of the internal structure of an example of the fluffy part which is a main part of the present invention, and FIG. 3 is an explanatory diagram showing an aspect of the fluffy part according to the present invention. DESCRIPTION OF SYMBOLS 1...Beam stand, 2...Beam, 4...Gluing tank, 9,9''...Fluffing device, 10,1''...
Guide roll for biting adjustment, 12... Dryer, 16
... Yarn beam, 21 ... Rotating brush roll, 2
2... Brush body, 23... Brush bristles, 24... Liquid tank of fluffing device, 25... Liquid, 26... Liquid splash guide, 27... Liquid film, 28... Fluff, W...
Warp.

Claims (1)

[Claims] 1. Applying a size liquid to a sheet-like warp pulled out from a beam placed on a beam stand, drying the sheet-like warp moistened by the size liquid, and winding it onto a yarn beam of a loom. This brush is a rotating brush roll, in which the sheet-like warp is coated with the sizing liquid in the warp sizing step and has not yet dried, and the surface of the brush bristles with good elastic recovery is appropriately coated with a liquid such as water or an oil dispersion. A method for sizing and fluffing spun yarns, which comprises rotating and sliding a brush roll on the bristles to fluff the surface of the sizing yarn. 2. A warp sizing device comprising a beam stand section, a size application section, a drying section, and a winding section, wherein a fluffing device is provided between the size application section and the drying section, and the fluff The folding device includes a liquid tank containing a liquid such as water or an oil dispersion, and brush bristles with good elastic recovery planted on the outer periphery, and when the bristles rotate downward, the liquid in the liquid tank is It consists of a rotating brush roll arranged so as to be immersed, and the rotating brush bristles of the rotating brush roll are removed from the immersed state in a liquid tank by removing excess liquid adhering to the bare surface of the bristles. 1. A warp sizing and fluffing device for spun yarn, comprising a liquid splashing guide that coats the fluff surface with a suitable amount of the liquid by using the liquid.