JPS62141114A - Application of treating solution to synthetic fiber - Google Patents

Abstract

PURPOSE:To prevent uneven application, by running a synthetic fiber yarn from below upward, passing the yarn through the front whole area of a treating solution exudation hole of specific dimension, running the yarn on a satinized sliding surface and applying the treating solution to the yarn without scattering the treating solution to the surroundings. CONSTITUTION:A synthetic fiber yarn 1 is passed through the front whole area of a treating solution exudation hole 3 having 0.8-2.5mm width (S1) in the running direction of the synthetic fiber yarn 1 and a width (S2) in the direction perpendicular to the running direction of arrow (Y) of the synthetic fiber yarn 1 narrower than the fiber width (F) of the synthetic fiber yarn 1. The synthetic fiber yarn 1 after application of the treating solution is then run on a satinized sliding surface 4 of 2s-8s surface roughness through 20-50mm distance.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application Field The present invention relates to a method for applying a treatment liquid to synthetic fibers in the process of manufacturing or processing synthetic fibers.

Prior Art> As a method of directly applying a treatment liquid to a traveling synthetic $1i fiber without using a rotating roller, for example,
A method is known in which a treatment liquid is applied to synthetic fibers using an apparatus described in Japanese Patent No. 2721. In this method, synthetic fibers are caused to travel from above to below, and the synthetic fibers are brought into contact with a treatment liquid that is caused to flow down from the incisions due to surface tension.

Problems to be Solved by the Invention> However, in the conventionally known method described above, the treatment liquid is guided not only by surface tension but also by the running of the synthetic fibers, resulting in an increased flow rate. The flow rate of this induced treatment flow varies due to the shaking of each single yarn forming the synthetic fiber, which makes the amount of treatment liquid deposited unevenly in the length direction of the synthetic fiber, and as a result, the quality of the synthetic fiber is improved. may be uneven. Furthermore, in the conventional method, not all of the flowing treatment liquid may adhere to the surface of the synthetic fiber, and the excess treatment liquid drips and contaminates the synthetic fiber manufacturing equipment. If the rotating body becomes contaminated, there is a drawback in that the processing liquid is scattered around and the contaminated area is expanded.

An object of the present invention is to provide a novel method for applying a treatment liquid to synthetic fibers, which solves the drawbacks of the above-mentioned conventional techniques.

Means for Solving the Problems and Effects> The structure of the present invention is that, in a method of applying a treatment liquid to synthetic fibers, the synthetic fibers are run from below to above, and the synthetic fibers are The width in the direction of movement is 0.8 to 2.571
At 1111, the synthetic fiber passes through the entire front surface of the treatment liquid exudation hole whose width in the direction perpendicular to the direction of movement of the synthetic fiber is narrower than the fiber width of the synthetic fiber, and the treatment liquid exuded from the treatment liquid exudation hole is applied. , a method for applying a treatment liquid to synthetic fibers, characterized in that the method continuously runs in contact with a matte running surface having a surface roughness in the range of 2 s to 8 s for 20 to 50 m++.

1 and 2 show an embodiment of the present invention, with FIG. 1 being a front view and FIG. 2 being a sectional view taken along line I-n' in FIG. 1.

The synthetic fiber 1 is run in the direction of arrow Y, that is, from the bottom to the top, and the width S1 of the synthetic fiber 1 in the direction of arrow Y, which is provided in the treatment liquid application device 2, is 0.
．． 8-2.5m, synthetic! The width S2 in the direction perpendicular to the direction of the arrow Y in which l1Ift1 moves is synthesized [1
By passing the entire front surface area of the processing liquid seepage hole 3, which is narrower than the fiber width of ft1, that is, the area indicated by the widths S1 and S2, upward, the processing liquid oozed from the processing liquid seepage hole 3 is passed through. The treatment liquid is applied reliably and the treatment liquid is continuously maintained in contact with the sliding surface 4 of the treatment liquid application device 2 while running. The surface of the sliding surface 4 is a satin surface consisting of 2s to 8s, and the sliding length of the synthetic fiber 1 to which the treatment liquid has been applied is 20 to 5071.
Must be within the range of 1111.

The processing liquid is supplied to the processing liquid application device 2 by a processing liquid quantitative supply mechanism (details not shown) 5.

When the width S1 of the treatment liquid seepage hole 3 is smaller than 0.8 rrm, the treatment liquid does not ooze out smoothly due to the surface tension of the treatment liquid itself, and the amount of treatment liquid attached to the synthetic fiber 1 becomes uneven.

On the other hand, if the width S1 exceeds 2.5#, it may not be possible to apply all of the exuded treatment liquid to the synthetic fiber 1, resulting in problems such as the treatment liquid dripping downward.

It is necessary for the synthetic fiber 1 to pass through the entire front surface of the processing liquid seepage hole 3. If the synthetic fiber 1 passes through the entire front surface of the processing liquid seepage hole 3 with a part left or right of the processing liquid seepage hole 3 remaining, the processing liquid seeped from that part will pass through the synthetic fiber. In 1 ("J@L"), spots of adhesion of the treatment liquid are produced, and the synthetic fibers are further pushed to the other side, and the degree of flaming increases sharply.

Therefore, the width F of the synthetic fiber 1 is the width S of the processing liquid seepage hole 3.
It is necessary to make the width wider than 2 so that it passes through the entire area of the processing liquid seepage hole 3. Among the single yarns forming the synthetic fiber 1, the single yarns located at both the left and right ends may have no treatment liquid attached to the front surface of the treatment liquid seepage hole 3, or may have a smaller amount than other parts. The sliding surface 4 is a matte surface with a surface roughness within the range of 2s to 8s, and the sliding length on the sliding surface 4 is 20.
By setting the length to 50 m, it is possible to induce diffusion of the treatment liquid and apply the treatment liquid to the single yarns at both ends. Running surface 4
If the surface roughness is less than 28, the running of the single yarns located at both ends will not be smooth, and the diffusion of the treatment liquid will also be poor, which may result in single yarn breakage, which is undesirable.

Furthermore, if the surface roughness is larger than 88, the diffusion of the treatment liquid will deteriorate and the treatment liquid may remain on the sliding surface 4, which is not preferable.

On the other hand, if the sliding length is shorter than 20 m, even if the surface roughness is 2.
Diffusion of the treatment liquid is not completed even during the time period of 8 seconds to 8 seconds, and if the sliding length exceeds 50 #, scratches may occur on the surface of the synthetic fiber 1, which is not preferable.

Therefore, it is necessary that the surface roughness of the sliding surface 4 is 25 to 8S and the sliding length is 20 to 5ON++.

Roughly speaking, the tension of the running synthetic fiber 1 is 0.1 to 1.1 g.
/denier is preferable.

When the tension of the synthetic fiber 1 is less than 0.1y/denier, the single yarns tend to sag, and when it exceeds 1.1y/denier, the contact of each single yarn with the sliding surface 4 tends to become uneven.

<Effects of the Invention> According to the method of the present invention, the amount of treatment liquid applied to synthetic fibers can always be uniform, the quality of the resulting synthetic fibers can be made extremely uniform, and the vicinity of the treatment liquid application device can be prevented from becoming contaminated. There's nothing to do.

Additionally, the method of the present invention has the additional effect that the treatment liquid applied to the synthetic fibers can always be fresh, rather than one that has been exposed to the outside air.

[Brief explanation of drawings]

All the drawings show an example of an embodiment of the present invention, and FIG. 1 is a schematic front view, and FIG. 2 is a schematic sectional view taken along the line 1--2 of FIG. 1390 synthetic fiber, 2. ,, processing liquid application device. 300. Processing liquid seepage hole, 4. ,, sliding surface. 5, , , II buried liquid supply 1a groove Sl, S2
．． , ,. Width, F, , Fiber width, L, , Sliding length. Arrow Y011: Direction of movement of synthetic fiber.

Claims (1)

[Claims] In the method for applying a treatment liquid to synthetic fibers, the synthetic fibers are made to run from below to above, and the synthetic fibers are separated from each other in a direction in which the synthetic fibers have a width of 0.8 to 2.5 mm in the direction of movement of the synthetic fibers. The processing liquid is passed through the entire front surface of the treatment liquid exudation hole, whose width in the perpendicular direction is narrower than the fiber width of the synthetic fiber, and the treatment liquid exuded from the treatment liquid exudation hole is applied, and the surface roughness is continuously increased to 2 seconds or more.
A method for applying a treatment liquid to synthetic fibers, which comprises running the synthetic fibers in contact with a matte sliding surface for 20 to 50 mm within a range of 8 seconds.