JPH10273812A - Feeding of oil agent to fiber yarn, apparatus for feeding oil, agent to fiber yarn and production of fiber yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress bubbles produced in an oil agent feeding system when feeding the oil agent to a fiber yarn and, in its turn, suppress the deterioration in both the operating efficiency such as yarn breakage due to the production of the bubbles and the quality due to nonuniform sticking of the oil agent. SOLUTION: The vacuum treatment of an oil agent is carried out in an oil agent tank or a part of an oil agent feeding system between the oil agent tank and an oil feeding head in a method for feeding the oil agent from the oil agent tank through a pipe to the oil feeding head and feeding the oil agent to a fiber yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supplying an oil agent for applying an oil agent to a fiber yarn, an apparatus for supplying an oil agent to the fiber yarn, and a fiber, which are suitably used in a fiber yarn forming step and a processing step. The present invention relates to an improvement in a method for producing a yarn.

More specifically, the stability and uniformity of the supply of the oil agent to the fiber yarn is greatly improved, so that the fiber yarn is effective in preventing yarn breakage and abnormal quality in the production and processing steps of the fiber yarn. The present invention relates to a method for supplying an oil agent to a yarn, an oil agent supply device, and a method for producing a fiber yarn.

[0003]

2. Description of the Related Art In a process of melt-spinning a fiber yarn or performing a yarn processing such as false twisting of a melt-spun yarn, an oil agent containing a smoothing agent, an antistatic agent, or the like is applied to the running fiber yarn. Has been performed.

In order to supply an oil agent to the fiber yarn,
In general, a method of supplying an oil agent from a tank for storing the oil agent to an oil supply head via an oil agent supply pipe or a metering pump, and attaching the oil agent to a thread that travels in contact with the oil supply head is generally implemented.

[0005] In this oil supply head, the oil agent measured by an oil agent measuring pump is constantly discharged from an oil agent discharge hole of a fixed guide, and the oil agent is applied to a yarn traveling in contact with the yarn contact surface of the guide. And an oiling roller oiling system in which an oil film is formed on the surface of a rotating roller and an oil agent is applied to a yarn running in contact with the roller.

[0006] The uniformity of adhesion of the oil agent to the fiber yarn greatly affects the stability and quality of the fiber yarn in the manufacturing process and subsequent processing steps such as knitting and weaving.

If the adhesion of the oil agent to the yarn becomes uneven in the longitudinal direction or the cross-sectional direction, the rubbing resistance of the yarn path guide on which the yarn runs in contact will fluctuate greatly, and in particular, the oil agent adhesion is partially incomplete. Or where the adhesion is reduced, the smoothness decreases and the resistance increases, the running yarn becomes very easy to cut, and not only greatly reduces the productivity, but also reduces the fluff, It is liable to cause a quality abnormality such that the yarn is incompletely unwound from the winding package.

Particularly, in a high-speed spinning process in which a synthetic fiber yarn such as polyamide or polyester is melt-spun and wound at a high speed of 2,000 m / min or more, the oil agent adheres because the yarn comes into contact with guides at a high speed. Susceptible to the condition of

However, in the case of a conventional method or apparatus for supplying an oil agent to a fiber yarn, when the air in the atmosphere is dissolved in the oil agent or when air is entrained by a physical operation such as stirring, the oil agent is not used. Bubbles are formed in a part of the supply system, and furthermore, stagnation, or oil agent is applied to the yarn in a state containing air bubbles, or bubbles aggregate in the oil agent supply pipe to form a bubble column As a result, the supply of the oil agent may fluctuate in a pulsating manner, or the oil agent may temporarily run out of the oil agent (poor ejection).

As described above, the content of the gas component in the oil agent,
This forms bubbles in the oil agent supply system, and further causes agglomeration or stagnation, which hinders uniform application of the oil agent to the fiber yarn, and has a very large adverse effect on productivity and quality.

[0011] In order to prevent such impregnation of the gaseous components in the oil agent and the reduction in productivity and quality due to the formation and aggregation of bubbles thereby, the oil agent is uniformly applied to the fiber yarn. Various things have been proposed. For example,
As described in JP-A-8-74117,
An apparatus for stably applying a uniform oil agent to a running yarn by providing an air bubble collecting tube immediately before an oil supply guide to collect and remove air bubbles, or as described in JP-A-61-275412. There has been proposed a metering lubricating device in which a three-way branch pipe is provided between a lubrication guide discharge hole and a lower lubrication pump to efficiently remove air bubbles mixed in an oil agent supplied to the lubrication guide.

However, such a means is effective in suppressing the effects of bubbles contained in or mixed in the oil agent, but is not a means for essentially suppressing the bubbles. The formation of bubbles in the system and the influence of aggregation cannot be completely prevented, and there is a problem in uniform adhesion of the oil agent.

[0013] Therefore, the present invention provides a method and apparatus for supplying an oil agent to a fiber yarn and an improved method of manufacturing the fiber yarn, thereby stably supplying the oil agent to the fiber yarn and uniformly attaching the oil agent to the fiber yarn. Various problems caused by uneven supply of yarn, such as tension fluctuations due to frictional resistance caused by guides etc. in contact with yarn, yarn breakage, generation of fluff, weak yarn, yarn spots, winding yarn package The main object of the present invention is to prevent poor unwinding of the yarn and to stabilize the yarn in the yarn making process and the yarn processing process and to improve the product quality.

[0014]

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a method of stabilizing the supply of an oil agent to a fiber yarn, and further improving the uniformity of oil agent adhesion to the fiber yarn. An object of the present invention is to provide an apparatus and a method for manufacturing a fiber yarn, and based on the object, to provide a method and an apparatus for improving the production stability and quality of the fiber yarn.

[0015]

The method of the present invention for supplying an oil agent to a fiber yarn has the following arrangement to solve the above-mentioned problems.

That is, in a method of supplying an oil agent to an oil supply head through a pipe from an oil agent tank and supplying an oil agent to a fiber yarn, the oil agent is supplied in an oil agent tank or a part of an oil agent supply system between the oil agent tank and the oil supply head. Is a method for supplying an oil agent to a fiber yarn, wherein the oil agent is subjected to a reduced pressure treatment.

Further, the apparatus for supplying an oil agent to a fiber yarn of the present invention has the following configuration.

That is, the oil solution is constituted by at least an oil solution tank, a pipe for feeding the oil solution to the oil supply head, and an oil supply head, and the oil solution is decompressed in a part of the oil solution supply system between the oil solution tank or the oil solution tank and the oil supply head. An apparatus for supplying an oil agent to a fiber yarn, characterized by comprising a pressure reducing means for applying.

Further, the method for producing a fiber yarn of the present invention has the following constitution.

That is, in a method for producing a fiber yarn in which an oil agent is applied to a traveling fiber yarn, the oil agent is subjected to a decompression treatment in a part of an oil agent supply system.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for supplying an oil agent to a fiber yarn, an apparatus for supplying an oil agent to a fiber yarn and a method for producing a fiber yarn according to the present invention will be described with reference to FIG.

FIG. 1 is a schematic view schematically showing an example of an apparatus for supplying an oil agent to a fiber yarn of the present invention. The oil supply device of FIG. 1 includes a storage tank 1 for supplying an oil, a decompression pump 2 for depressurizing the storage tank, and a decompression meter 3.
It comprises a head tank 5 for supplying an oil agent to the spinning spindle, a metering pump 7 for measuring the oil agent supplied from the head tank, and an oil supply guide 10 for discharging and supplying the oil agent to the thread running in contact.

The oil agent supply device according to the present invention is characterized in that a part of such an oil agent supply circuit has a pressure reducing circuit for positively performing a pressure reducing process on the oil agent.

As shown in FIG. 1, such a pressure reducing circuit may be provided not only in the storage tank 1 but also in the head tank 5 disposed immediately before the spinning spindle. As long as the gas component (bubbles) is removed, the position may be anywhere. In particular, from the viewpoint of preventing the oil agent from being sucked by the reduced pressure, it is practically preferable to provide the tank portion as described above.

Although the appropriate level of the reduced pressure varies depending on the viscosity and composition of the oil agent, it is 500 hp from the viewpoint of preventing the formation and aggregation of bubbles in the oil agent and the re-entrapment of bubbles.
a, and more preferably 35 or less.
When the pressure is reduced to 0 hpa or less, more preferably 250 hpa or less, the completeness of the bubble removal is high. However, in terms of the bubble removal of the present invention, 100 hpa or more is sufficient.
The range of -500 hpa is preferable.

The decompression time depends on the state of bubbles contained in the oil agent,
Although it depends on processing conditions, the residence time is preferably 30 minutes or more.

The temperature during depressurization may be room temperature, but in order to further enhance the effect of removing bubbles by depressurization,
It is preferable that the tank is heated to about 30 to 90 ° C. by providing a heater or a hot water jacket. When heating the oil agent, the oil agent may be cooled thereafter if necessary.

The decompression treatment can be carried out continuously, but it is also possible to temporarily shut off the decompression section from the oil agent supply system and carry out the treatment in batches.

The method for supplying an oil agent to the fiber yarn according to the present invention,
The apparatus for supplying an oil agent to the fiber yarn and the method for producing the fiber yarn are provided by performing a decompression treatment on the oil agent in the oil agent supply step,
It can be widely applied to emulsion oils and straight oils in order to remove gas components inside and prevent gas entrainment. Can be particularly effectively used for a straight type oil agent that is easily entrained.

The present invention is directed to a fiber yarn process for melt-spinning and winding a synthetic fiber yarn, and a yarn processing process for winding a fiber yarn after performing yarn processing such as false twisting and then adding oil. The present invention can be widely applied to a process of manufacturing by supplying an oil agent to a product.

In particular, when synthetic fiber yarns made of polyamide, polyester, or the like are melt-spun and wound at a high speed of 2000 m / min or more, bubbles are easily entangled in the oil agent, and single yarns of the wound yarn are used. It can be suitably used when the fineness is as fine as 5 deniers or less.

For example, a high-speed spinning process in which the spun yarn is taken up at a high speed and wound without substantially stretching, a direct spinning / drawing process in which the spun yarn is taken and subsequently stretched and wound at a high speed, or It can be used in an undrawn spinning step in which a spun yarn is wound without being substantially oriented.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments.

Example 1 Nylon 6 chips containing 0.4% of titanium oxide as a matting agent and having a relative viscosity of 2.62 with respect to 98% sulfuric acid were melted at 260 ° C. and passed through filter sand and a metal non-woven fabric filter. Spin the molten polymer from the die
After cooling the spun yarn to give a substantially oil-free straight type oil agent, a confounding treatment is performed by pressurized air, the yarn is taken out to a first godet roller at 4450 m / min, and continuously 175 ° C. 5250 m / min was drawn on a heated second godet roller and stretched directly 1.18 times, and wound on a spindle drive winder at a winding tension of 0.15 g / D.

The winder has two spindles, and uses a type in which one of the spindles winds the yarn for a predetermined time and then automatically switches the yarn to the other spindle.

The wound yarn has a fineness of 70 denier and 34
Eight filaments were wound simultaneously on a single winder as a filament yarn, and when a package of 6 kg winding was formed, the yarn was automatically switched.

The supply of the oil agent is performed by using the oil agent supply device shown in FIG. 1 and supplying the oil from the storage tank to the head tank of the spindle, and from the head tank to the metering pump.
The measured oil agent is discharged from a fixed oil supply guide on which the yarn is in contact and travels, and is applied to the yarn.

The oil supply position by the oil supply guide was 2,000 mm below the surface of the base, and the supply amount was set so that the amount of the oil applied to the yarn was 0.6%.

At this time, a decompression circuit was provided in the storage tank, the pressure was reduced by a decompression pump, and the decompression state was read by installing a pressure gauge.

In the case of heating the oil at the time of decompression, the storage tank was heated with hot water using a jacket, and the head tank was cooled to room temperature with a jacket.

The evaluation was carried out by spinning four winders (32 yarns) at each level for one week, and the yarn breakage rate (the number of yarn breaks with respect to the amount of yarn) during that time, and the presence or absence of air bubbles in the oil supply pipe after one week. , No bubbles (○), very small amount of bubbles (△), many bubbles
(X) was evaluated.

The yarn spots after one week of spinning were measured using a Wooster meter manufactured by Zellbeger.

Table 1 shows the results of this evaluation.

[0044]

[Table 1] As shown in Table 1, in the oil agent supply method and apparatus according to the present invention, the generation and accumulation of bubbles in the oil agent piping system during spinning were eliminated, the number of occurrences of thread breakage was small, and the yarn operability was extremely stable.

[0045]

According to the present invention, when an oil agent is supplied to a fiber yarn, bubbles generated in the supply system are suppressed, and furthermore, operability such as thread breakage due to the generation of air bubbles and adhesion of the oil agent are suppressed. Quality deterioration due to unevenness can be suppressed.

In particular, it is highly effective to apply the present invention to a straight type oil which contains bubbles easily in the oil and has a large influence of the entrained oil.

[0047]

[Description of Signs] 1: Storage tank 2: Decompression pump 3: Pressure gauge 4, 6, 9: Oil supply pipe 5: Head tank 7: Metering pump 8: Drive motor 10: Oil supply guide

[Brief description of the drawings]

FIG. 1 is a schematic view schematically showing an example of an apparatus for supplying an oil agent to a fiber yarn of the present invention.

Claims (5)

[Claims] 1. A method for feeding an oil agent to an oil supply head from an oil agent tank through a pipe and supplying the oil agent to a fiber yarn,
A method for supplying an oil agent to a fiber yarn, wherein the oil agent is subjected to a decompression treatment in an oil agent tank or a part of an oil agent supply system between the oil agent tank and an oil supply head. 2. A part of the oil supply system is used to supply the oil at 500 hp.
2. A decompression process up to a is performed.
A method for supplying an oil agent to the described fiber yarn. 3. The method for supplying an oil agent to a fiber yarn according to claim 1, wherein the oil agent applied to the fiber yarn is a straight oil agent containing substantially no water. 4. A decompression process for an oil agent in at least a part of an oil agent tank or a part of an oil agent supply system between the oil agent tank and the oil supply head, comprising at least an oil agent tank, a pipe for feeding the oil agent to the oil supply head, and an oil supply head. An apparatus for supplying an oil agent to a fiber yarn, comprising a pressure reducing means for applying the oil. 5. A method for producing a fiber yarn in which an oil agent is applied to a running fiber yarn, wherein the oil agent is subjected to a decompression treatment in a part of an oil agent supply system.