JP4342766B2 - Method and apparatus for processing synthetic fiber bundle in liquid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a synthetic fiber bundle that is heated in a bath, stretched, imparted with a treating agent, an organic solvent contained in the fiber is removed, or a treating agent attached to the fiber. The present invention relates to a method for performing a bath liquid treatment for cleaning the liquid and an apparatus therefor.
[0002]
[Prior art]
In the production of synthetic fibers, in-liquid treatment is generally performed to perform treatments such as heating in a bath, stretching, or applying a treatment agent. At that time, it is extremely important to increase the production efficiency of synthetic fibers and to reduce the manufacturing cost. As a means for solving such problems, a fiber bundle to be treated (hereinafter referred to as “fiber bundle”). In many cases, measures such as increasing the number of yarns (sometimes referred to as “yarn”) and increasing the traveling speed of the fiber bundle are often employed.
[0003]
However, on the one hand, this means has the advantage that it can be implemented industrially without significant equipment expansion. On the other hand, with respect to synthetic fibers that are treated in the bath, a large amount of fiber bundles can be liquidated at high speed. Due to the middle treatment, the bath liquid is disturbed, and there is a problem that single fibers are entangled between fiber bundles that run adjacent to each other, so that fiber mixing tends to occur.
[0004]
If adjacent fiber bundles are entangled and such fiber mixing occurs, single fiber breakage will occur, and if this becomes severe, fiber bundle breakage will occur, resulting in a decrease in the quality of the resulting fibers and substantial production efficiency. Incurs a decline. Therefore, in order to improve the above-mentioned problem, in JP-A-63-159571, when a plurality of synthetic fiber bundles are treated in a bath, a take-up roller for the fiber bundles is provided outside the bath liquid, and It has been proposed that a fixed guide is attached to the bath interface, and the width of the fiber bundle traveling is brought into contact with the guide to widen the width.
[0005]
That is, in this prior art, when the take-up roller is provided outside the bath liquid, when the take-up roller is provided in the bath, the bath liquid is prevented from being disturbed by the bath liquid disturbance caused by the take-up roller in the bath. The flow of the bath liquid accompanying the strip is blocked by the take-up roller, thereby preventing the bath liquid from being disturbed.
[0006]
Further, by providing the fixed guide in the liquid or at the interface, it is possible to prevent the width of the fiber bundle from being reduced due to the provision of the take-up roller outside the bath liquid. That is, the fiber bundle is squeezed and widened by pressing the fiber bundle against the fixed guide.
[0007]
Indeed, if such a method is adopted, it is possible to prevent the fiber mixing between adjacent fiber bundles to some extent. However, in order to achieve the original purpose of increasing production efficiency, if the number of yarns processed is increased or the yarn processing speed is increased, the fixed ladder guide is attached to the yarn ladder. It is rubbed off and thereby damaged, causing a new problem of inducing degradation of the quality and performance of the fibers obtained in the bath.
[0008]
Furthermore, recently, when the processing speed of the fiber bundle is 800 m / min or more, particularly when it is processed in the liquid at a high speed exceeding 1000 m / min, the treatment liquid is accompanied by the traveling fiber bundle. It is lifted violently outside the bath, and this raised accompanying water disturbs the running state of the fiber bundle, widens its width greatly, and this causes a new problem of fiber mixing due to entanglement between the fiber bundles. It has become like this.
[0009]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problem, that is, in the treatment of synthetic fiber bundles in the bath, suppresses the influence of accompanying water lifted by the fiber bundle traveling at high speed, and thereby the fiber bundles are entangled with each other. A method for obtaining a synthetic fiber bundle having excellent quality and performance in which mixed fiber does not occur, and further, the single fiber breakage caused by this is prevented, and the running yarn is not abraded. An object is to provide an apparatus.
[0010]
[Means for Solving the Problems]
As an aspect of the present invention for achieving the above-described object, the present invention has been described as follows: “A bath outer roller group disposed outside the bath liquid and a bath roller group disposed in the bath liquid are arranged, When the synthetic fiber bundle is dipped into the bath solution a plurality of times by running the synthetic fiber bundle alternately at a running speed of 800 m / min or more between the rollers in the bath, all the above drawn out of the bath Provided is a submerged treatment method for a synthetic fiber bundle characterized in that a rotating body that is forcibly rotated and / or freely rotated is brought into contact with the synthetic fiber bundle and the bath liquid lifted by the traveling synthetic fiber bundle is blocked. Is done.
[0012]
Further, according to the present invention, “the treatment bath for treating the synthetic fiber bundle in the liquid, the bath outer roller group disposed outside the bath liquid , the bath roller group disposed in the bath liquid, and the bath liquid is drawn out from the bath liquid. At least a rotating body that is in contact with the synthetic fiber bundle and that rotates forcibly and / or freely rotates, and alternately travels between the outer roller and the in-bath roller at a traveling speed of 800 m / min or more. A synthetic fiber bundle submerged treatment apparatus characterized by bringing the rotating body into contact with the synthetic fiber bundle drawn out of the bath with respect to the synthetic fiber bundle immersed in the bath solution a plurality of times " Provided.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic explanatory view illustrating one embodiment for explaining a method for treating the synthetic fiber bundle of the present invention in a bath solution and an apparatus therefor.
[0014]
In FIG. 1, the reference symbol Y is a synthetic fiber bundle to be treated in the bath, the reference symbol 1 is an outer bath roller, the reference symbol 2 is a bath roller immersed in the bath liquid, the reference symbol 3 is forced rotation and / or A rotating body that freely rotates, reference numeral 4 is a bath liquid (treatment liquid), reference numeral 5 is a gas such as air or nitrogen (hereinafter simply referred to as “gas”), and reference numeral 6 is a liquid level of the treatment liquid. Each is shown.
[0015]
In the submerged processing apparatus for a synthetic fiber bundle of the present invention configured as described above, the yarn Y travels in the direction of the arrow shown in the figure. Therefore, in the embodiment shown in FIG. 1, the running yarn Y is composed of the outer roller group 1 arranged in the gas 5 outside the bath liquid and the in-bath roller group 2 arranged in the bath liquid 4. , Alternately immersed in the treatment liquid in the bath for treatment. At this time, under normal processing conditions, generally, the outside-bath roller group 1 and the in-bath roller group 2 are forcibly driven by a driving device (not shown).
[0016]
In this case, in the present invention, “after the synthetic fiber bundle Y is treated in the bath liquid, the treated fiber bundle Y is pulled out of the bath, and the rotating body 3 that is forcibly rotated and / or freely rotated is pulled out of the bath. The main feature is to “contact the fiber bundle Y and remove the bath liquid accompanying the traveling fiber bundle”.
[0017]
On the other hand, in the technique described in Japanese Patent Application Laid-Open No. 63-159571 described in the section of “Prior Art”, a “fixed guide” is used instead of the “rotating body for forced and / or free rotation” of the present invention. And the rotating body 3 is not provided outside the bath (that is, in the gas 5) as in the present invention, but is provided in the bath liquid 4 or at the interface 6. Is different.
[0018]
The reason why the present invention adopts such a configuration is that, first of all, unlike the case where the fiber bundle Y is in contact with the fixed guide, this rotation is performed by using the rotating body 3 that rotates forcibly and / or freely. Even if it is brought into contact with the body 3, the fiber bundle Y can be ironed without rubbing. And it has the advantage that the large increase in the width | variety by the influence of the accompanying water which the yarn Y lifts because it went out of the bath by such a ironing effect can be suppressed.
[0019]
Next, an increase in the number of yarns to be processed in order to increase production efficiency, and further, when the traveling speed of the yarn is increased, due to the influence of accompanying water that is rapidly lifted from the bath accompanying the traveling yarn Y, The yarn Y traveling on each outer roller 1 and each roller 2 in the bath is widened, and the adjacent fiber bundles Y are entangled to generate a single fiber, thereby obtaining a synthetic fiber. As described above, the deterioration of quality and performance, or the process condition such as single fiber breakage and yarn breakage was induced.
[0020]
Therefore, as a second reason that the present invention adopts the above-described configuration, in order to eliminate the influence caused by abrupt lifting of the accompanying water accompanying the traveling yarn Y, by providing the rotating body 3, The accompanying water that the yarn Y lifts out of the bath can be cut. That is, the rotating body 3 plays a role of blocking water accompanying the yarn Y.
[0021]
Therefore, in order to make the rotator 3 of the present invention play the above-described role, the rotator 3 is required to reach the outer roller 1 with respect to the yarn Y coming out of the processing liquid 4. Is preferably provided in the gas 5, particularly preferably in the vicinity of the bath liquid surface 6.
[0022]
In addition, about the rotary body 3 which carries out forced rotation and / or free rotation, it is preferable to eliminate completely the slip which generate | occur | produces with the running yarn Y. However, it is not required to completely eliminate this slip, and depending on the quality and performance of the obtained yarn, a certain amount of slip can be allowed within a range where the yarn is not fatally damaged. . That is, preferably, the rotating water 3 is lightly pressed against and brought into contact with the yarn Y at a speed of 90% to 110% with respect to the traveling speed of the yarn Y. You may cut most.
[0023]
At that time, the diameter of the rotating body 3 used in the present invention is not particularly limited as long as the above-described effects are exhibited, but it is preferably a roller of 10 to 200 mm, particularly 15 to 60 mm. Further, the contact force (pressing force) at the time of pressing against the running yarn Y does not have to be limited as long as the effect of the present invention is achieved. 1.0 kgf, particularly preferably 0.2 kgf to 0.3 kgf.
[0024]
This is because according to the experiment of the present inventor, it is possible to remove 95% or more of the accompanying water accompanying the running yarn Y by using the rotating body 3 having the above-described conditions. As a result, the widening rate of the running yarn Y can be suppressed from 260% to 15% or less.
[0025]
【The invention's effect】
As described above in detail, when the synthetic fiber bundle is treated in the bath, the rotating body 3 is provided and brought into contact with the running fiber bundle Y, so that the fiber bundle is not damaged and is moved out of the bath. The accompanying water lifted by the fiber bundle traveling at high speed can be effectively cut.
[0026]
And, by this, it is possible to suppress the fiber strands that are entangled with each other in the fiber bundle outside the bath or on the roller in the bath, and as a result, it is possible to prevent the occurrence of single fiber breakage and yarn breakage, Since the running yarn is not rubbed excessively, the synthetic fiber bundle having excellent quality and performance can be obtained.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic explanatory view showing an embodiment for explaining a method for processing a synthetic fiber bundle in liquid and an apparatus therefor according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer bath roller 2 In-bath roller 3 Rotating body 4 Process liquid 5 Gas 6 Liquid level Y of process bath Synthetic fiber bundle

Claims (2)

A bathing roller group arranged outside the bath liquid and a bathing roller group arranged in the bath liquid are arranged, and a traveling speed of 800 m / min or more is alternately provided between the bathing roller and the bathing roller. When the synthetic fiber bundle is treated by immersing the synthetic fiber bundle in the bath solution a plurality of times by rotating the synthetic fiber bundle, the rotation is forced and / or freely rotated with respect to all the synthetic fiber bundles drawn out of the bath. A method for treating a synthetic fiber bundle in liquid, comprising contacting a body and damming a bath liquid lifted by the traveling synthetic fiber bundle. A treatment bath for treating the synthetic fiber bundle in the liquid, a bath roller group disposed outside the bath liquid , a bath roller group disposed in the bath liquid, and the synthetic fiber bundle drawn from the bath liquid. At least a rotating body that is in contact and forcibly rotated and / or freely rotated, and alternately runs between the outer roller and the roller in the bath at a running speed of 800 m / min or more and is immersed in the bath solution a plurality of times. A synthetic fiber bundle submerged treatment apparatus , wherein the rotating body is brought into contact with the synthetic fiber bundle to be treated to the synthetic fiber bundle drawn out of the bath .

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