JP2002146667A - Dyeing treatment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly practical dyeing treatment method enabling an oiling agent to be made to uniformly adhere to dyed yarns. SOLUTION: This dyeing treatment method comprises dyeing yarns 2 in a reservoir tank 1 under circulating a dyeing solution 3 in the tank 1 while increasing/decreasing the flow or flow velocity of the dyeing solution 3 or while reversing optionally the circulating direction of the dyeing solution 3 in the tank 1, and introducing a heated solvent and an oiling agent into the tank 1 while agitating and mixing them together and contacting the above dyed yarns 2 with the resultant mixture to effect adherence of the oiling agent to the dyed yarns 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dyeing method for dyeing yarn.

[0002]

2. Description of the Related Art In order to eliminate uneven dyeing of a yarn when the yarn is dyed with a dye liquor by putting the yarn in a liquid reservoir and to shorten the dyeing time, the present inventor has proposed the present invention. Is the Japanese Patent Publication No. 6-15739, the Japanese Patent Publication No. 7-109058
No., JP-B-8-23104 and Patent No. 2559662
No. has been invented.

[0003] These techniques are used in cheese dyeing and the like.
When a dye liquor passes through a wound body formed by winding a yarn around a bobbin, etc., the path of the dye liquor tends to be constant, and if the path is constant, the yarn of the path is dyed but other This is achieved by paying attention to the point that the yarn is no longer dyed, for example, by increasing or decreasing the flow rate and flow velocity of the dyeing liquid (pulse dyeing), or by reversing the circulation direction of the dyeing liquid in the liquid reservoir ( By performing reverse dyeing, the path of the dyeing liquor is not made to be constant, and the entire wound body is to be dyed uniformly.

[0004] In the dyeing treatment, after dyeing the wound body, an oiling agent adhering step of adhering an oiling agent for converging the fibers constituting the yarn or improving the slip of the yarn is performed by the liquid. This is done using a reservoir. Also, the adhesion of the oiling agent tends to be uneven like the above-mentioned dyeing, and there is a problem that the yarn is liable to be cut in a portion where the oiling agent is insufficiently adhered. Also,
Even if a large amount of oiling agent is used to make up for the insufficient adhesion of the oiling agent, the oiling agent settles and adheres to the lower part of the liquid storage tank (terling phenomenon), and eventually the adhesion of the oiling agent becomes uneven. I will.

[0005] The present invention has been achieved in view of the above-mentioned situation, and can perform both dyeing and adhesion of an oiling agent without unevenness. It provides a processing method.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

[0007] While circulating the dye solution 3 in the liquid reservoir 1, increasing or decreasing the flow rate or flow velocity of the dye solution 3, or reversing the circulation direction of the dye solution 3 in the liquid reservoir 1 as necessary. In the dyeing treatment method for dyeing the yarn 2 in the liquid reservoir 1, a heated solvent and an oiling agent are introduced into a container, and the solvent and the oiling agent are stirred and mixed, and the mixture of the solvent and the oiling agent is mixed. The present invention relates to a dyeing treatment method, which comprises contacting the dyed yarn 2 with an oiling agent to cause the oil 2 to adhere to the dyed yarn 2.

In the dyeing method according to the first aspect, when the oiling agent is attached to the yarn 2, the mixture of the solvent and the oiling agent is mixed with a flow rate or a flow rate lower than the flow rate or the flow rate of the dyeing liquid 3 at the time of dyeing. And a dyeing treatment method characterized by circulating in a dyeing treatment method.

Further, in the dyeing method according to claim 2, when the mixture of the solvent and the oiling agent is circulated,
15 to 25 than the flow rate or flow rate of the dyeing solution 3 during dyeing
The present invention relates to a dyeing method characterized by circulating at a flow rate or flow rate lower by%.

[0010] The dyeing method according to any one of claims 1 to 3, wherein a liquid storage tank 1 from which the dyeing solution 3 is removed after dyeing is employed as a container. Things.

In the dyeing method according to the present invention, when the heated solvent and the oiling agent are introduced into the liquid storage tank 1 from which the dye liquid 3 has been removed, first, the liquid storage tank 1 from which the dye liquid 3 has been removed is introduced. , Followed by heating the solvent to a predetermined temperature, stopping the heating, adding an oiling agent to the heated solvent, and subsequently stirring the solvent and the oiling agent. The present invention relates to a dyeing method characterized by mixing.

Further, in the dyeing treatment method according to any one of claims 4 and 5, when the heated solvent and the oiling agent are introduced into the liquid storage tank 1 from which the dyeing liquid 3 has been removed, After removing the thread 2, the heated solvent and the oiling agent are introduced, and the solvent and the oiling agent are stirred and mixed. Subsequently, the removed thread 2 is introduced into a mixture of the solvent and the oiling agent. Then, an oiling agent is caused to adhere to the yarn 2.

In the dyeing treatment method according to any one of claims 1 to 6, when the mixture of a solvent and an oiling agent is brought into contact with the dyed yarn 2 to cause the oiling agent to adhere to the yarn 2, A dyeing method comprising: circulating the mixture while increasing or decreasing the flow rate or the flow velocity of the mixture, or reversing the circulation direction of the mixture as necessary, thereby causing the oil 2 to adhere to the yarn 2. It is related.

Further, in the dyeing method according to any one of claims 1 to 7, when the dyeing liquid 3 is discharged from the liquid storage tank 1 after the dyeing is completed, the dyeing liquid 3 in the liquid storage tank 1 is cooled. The dyeing liquid 3 is circulated, and in this circulation, the flow rate or the flow rate of the dyeing liquid 3 is made lower than that in the dyeing, and thereafter, the dyeing liquid 3 is discharged from the liquid tank 1. Pertains to the method.

In the dyeing method according to claim 8, the flow rate or the flow rate of the dyeing liquid 3 when discharging the dyeing liquid 3 is 23 to 33% less than the flow rate or the flow rate when dyeing.
The present invention relates to a dyeing method characterized by lowering.

Further, while circulating the dyeing liquid 3 in the liquid storage tank 1, increasing or decreasing the flow rate or flow velocity of the dyeing liquid 3, or reversing the circulation direction of the dyeing liquid 3 in the liquid storage tank 1 as necessary. In the dyeing treatment method for dyeing the yarn 2 in the liquid storage tank 1 while discharging the dye liquid 3 from the liquid storage tank 1 after completion of the dyeing, the dye liquid 3 in the liquid storage tank 1 is cooled while the dye liquid 3 is cooled. The dyeing treatment method is characterized in that the dyeing liquid 3 is circulated, the flow rate or the flow rate of the dyeing liquid 3 is made lower than that in dyeing, and then the dyeing liquid 3 is discharged from the liquid reservoir 1. is there.

In the method of dyeing the yarn 2 with the dye solution 3 in the liquid reservoir 1, a heated solvent and an oiling agent are introduced into a vessel, and the solvent and the oiling agent are stirred and mixed. A dyeing treatment method comprising contacting a mixture of the oil and the oiling agent with the dyed yarn 2 to cause the oiling agent to adhere to the yarn 2.

Further, in the method of dyeing the yarn 2 with the dye 3 in the liquid tank 1, the dye 2 is dyed with the dye 3, and then the dye 3 is removed from the liquid tank 1. Introducing a solvent into 1 and subsequently heating the solvent to a predetermined temperature, stopping the heating, subsequently adding an oiling agent to the heated solvent, and subsequently adding the oil and the oiling agent Is mixed with a stirrer to cause an oiling agent to adhere to the yarn 2.

In the method of dyeing the yarn 2 with the dye 3 in the liquid tank 1, when the dye 3 is discharged from the liquid tank 1 after the dyeing is completed, the dye 3 in the liquid tank 1 is cooled. The dyeing liquid 3 is circulated, and in this circulation, the flow rate or the flow rate of the dyeing liquid 3 is made lower than that in the dyeing, and thereafter, the dyeing liquid 3 is discharged from the liquid tank 1. Pertains to the method.

[0020]

Conventionally, when an oiling agent is applied to the dyed yarn 2, the dyeing liquid 3 is first removed from the liquid storage tank 1, and then the solvent for mixing the oiling agent into the liquid storage tank 1 is used. (E.g., water) and an oiling agent, and then heating the mixture while stirring and mixing the mixture of the solvent and the oiling agent with an appropriate stirring mechanism to obtain an appropriate temperature at which the oiling agent can easily adhere. According to the method, the oiling agent was adhered to the yarn 2. However, in this method, the adhesion unevenness of the oiling agent was inevitably generated.

The present inventor has found that the uneven adhesion of the oiling agent may be caused by insufficient mixing of the solvent with the oiling agent due to the low temperature of the solvent when mixing the solvent with the oiling agent. It was considered that a mixture of the solvent and the oiling agent would pass through the yarn 2 in a mixed state.

Therefore, when the oiling agent is attached to the yarn 2, a method of introducing the oiling agent into the heated solvent is adopted, whereby the solvent and the oiling agent are mixed in a state where the temperature of the solvent is sufficiently high. When a method in which the mixture of the solvent and the oiling agent is brought into contact with the yarn 2 is employed, the unevenness of adhesion of the oiling agent is significantly reduced because the solvent is heated in advance and the solvent and the oiling agent are sufficiently mixed. It was confirmed that.

The dyeing of the yarn 2 can be performed by a pulse dyeing method of dyeing the yarn 2 while increasing or decreasing the flow rate or flow rate of the dyeing liquid 3 circulating in the liquid reservoir 1, or by dyeing the dye 3 circulating in the liquid reservoir 1. Is performed by the reverse dyeing method of dyeing the yarn 2 while reversing the circulation direction of the yarn 2 as necessary, so that the flow rate, flow rate,
Since the flow direction and the like are not constant and the path of the dyeing liquid 3 is not necessarily constant, the entire yarn 2 is uniformly and well dyed.

Further, when the pulse dyeing method and the reverse dyeing method used for this dyeing were applied to the adhesion of the oiling agent, the amount of the oiling agent used was reduced or the processing time was shortened. However, it was confirmed that unevenness in the adhesion of the oiling agent was eliminated.

Since the present invention is constituted as described above, the yarn can be dyed uniformly and well, and the oiling agent can be evenly applied to the yarn, so that more excellent dyeing can be achieved. It will be a dyeing method with excellent practicality that can be achieved.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention and will be described below.

In the present embodiment, the dyeing method for dyeing the yarn 2 with the dyeing liquid 3 in the liquid tank 1 is performed. The dyeing liquid 3 in the liquid tank 1 is circulated by the circulation pump 4 while the flow rate of the dyeing liquid 3 is increased. Alternatively, a pulse dyeing process for dyeing the yarn 2 in the reservoir 1 while increasing or decreasing the flow rate, and a yarn 2 in the reservoir 1 while reversing the circulation direction of the dye 3 in the reservoir 1 as necessary.
Dyeing treatment for dyeing the liquor and the liquid reservoir 1 from which the dyeing liquid 3 has been removed.
The solvent is stored therein, subsequently, the solvent is heated to a predetermined temperature. Subsequently, after the heating is stopped, an oiling agent is added to the solvent, and the solvent and the oiling agent are stirred and mixed by the circulation pump 4, The mixture of the solvent and the oiling agent is brought into contact with the dyed yarn 2 to carry out an oiling agent adhering treatment for adhering the oiling agent to the yarn 2.

When the dyeing liquid 3 is discharged from the liquid tank 1 after the dyeing, the dyeing liquid 3 in the liquid tank 1 is cooled while the dyeing liquid 3 is discharged.
During the circulation, the flow rate or the flow rate of the dye solution 3 is made lower than that at the time of dyeing.
To discharge the liquor 3 from the apparatus.

The drawing illustrates the case where cheese dyeing is performed. The yarn 2 is handled in a state of a bobbin 6 wound around a bobbin 5.

The bobbin 5 is provided with a hollow portion 7 having an opening 8 at a lower portion. Further, a large number of liquid passage holes communicating with the hollow portion 7 are provided in the side wall of the bobbin 5.

Reference numeral 9 denotes a blocking plate 9 for preventing the yarn 2 wound around the bobbin 5 from moving up and down. In the drawing, a plurality of blocking plates 9 are provided at predetermined intervals in the vertical direction of the bobbin 5, and the yarn 2 is wound between the upper and lower blocking plates 9.

The bobbin 6 is attached to the bobbin mounting body 10 in the reservoir 1.
Connected to.

On the upper part of the bobbin mounting body 10, the bobbin 5
A liquid passage 11 communicating with the hollow portion 7 is provided. In addition, a liquid communication path connecting the first liquid passage pipe 12 connected to the circulation pump 4 and the liquid passage port 11 is provided in the bobbin attachment body 10.
13 are provided.

A second liquid passage pipe 14 connected to the circulation pump 4 is connected inside the liquid storage tank 1. Accordingly, by driving the circulation pump 4, for example, the circulation pump 4, the first liquid passage pipe 12, the hollow portion 7 of the bobbin 5, the liquid passage hole, the bobbin 6 (the yarn 2), the inside of the liquid reservoir 1, and the second liquid passage Pipe 14, again circulation pump 4
The dyeing liquor 3 and the like can be circulated through such a route.

An opening / closing lid 15 is provided above the liquid reservoir 1. This opening / closing lid 15 is closed during dyeing.

An air passage pipe 16 is connected to the liquid storage tank 1.

The air passage tube 16 is provided with three air paths. The first is an automatic air supply path 18 via a check valve 17, which automatically supplies air into the liquid storage tank 1 when the pressure in the liquid storage tank 1 is reduced due to the removal of the dyeing liquid 3 or the like. Is what you do. The second is a manual air supply path 20 via a manual valve 19, which is used when the pressure in the liquid storage tank 1 is rapidly reduced or when the air supply from the automatic air supply path 18 cannot be made in time. The air is arbitrarily supplied into the liquid storage tank 1 when dyeing is performed while the inside is pressurized. The third is an automatic air discharge path 22 through a check valve 21. When the inside of the liquid storage tank 1 is in a high-pressure state due to a rise in the liquid level of the dyeing liquid 3 in the liquid storage tank 1, the inside of the liquid storage tank 1 is opened. Is automatically discharged. Note that a simple configuration in which only one air supply path is provided may be used.

Reference numeral 23 denotes an inverter 23 for controlling the driving of the circulation pump 4. The inverter 23 enables the circulating pump 4 to perform an operation for performing the pulse staining process, the reverse staining process, and the like.

Reference numeral 25 denotes a heating / cooling device 25 for heating and cooling the dye 3 and the like in the liquid storage tank 1. The heating / cooling device 25 has a configuration in which a tube is spirally disposed at the bottom of the liquid storage tank 1, and adopts a structure in which heated steam or cooling water is allowed to pass through the tube.

Reference numerals 26a and 26b denote sensors for measuring the flow pressure of the dyeing solution 3. The sensors 26a and 26b are provided in the first liquid passage pipe 12 and the second liquid passage pipe 14, respectively, and appropriately transmit the measured fluid pressure to the inverter 23 to derive a differential pressure from the fluid pressure. The pressure is used to derive the frequency of the pulse staining process (frequency of increasing or decreasing the flow rate or the flow velocity) or the reversal timing of the reverse staining process.

Reference numeral 27 denotes a drainage section 27.

Next, the pulse staining process and the reverse staining process will be described in detail (see FIGS. 2 and 3).

In the pulse dyeing process, the discharge force of the circulating pump 4 is increased or decreased in a predetermined cycle, so that the flow rate and the flow rate of the dye solution 3 and the like circulated by the circulating pump 4 are always reduced from appropriate values. The flow rate and the flow rate are increased and decreased as necessary (hereinafter, the increase and decrease of the flow rate and the flow rate in a predetermined cycle are referred to as pulsating flow).

The frequency (period) of the pulsating flow is a frequency of a suitable pulsating flow obtained by a dyeing test of the yarn 2 using the same device or the like, that is, as short as possible and as uniform as possible. The frequency of the pulsating flow that achieves the proper staining is adopted. Therefore, depending on the type of the yarn 2, for example, the material of the yarn 2 and the state of the yarn 2 put in the liquid reservoir 1, the frequency of the pulsating flow is appropriately set in several patterns even in the same apparatus. The control of the pulsating flow (the control of the flow rate and the flow rate) is performed by the differential pressure of the dye solution 3 on the inlet side and the outlet side with respect to the liquid reservoir 1 obtained by the measurement by the sensors 26a and 26b.

Further, the flow rate and the flow velocity are set so as to decrease by about 15 to 25% from the normal appropriate values when the flow rate and the flow rate decrease. In the case of dyeing a high twist yarn, it is preferable to reduce the flow rate and the flow rate to about 20 to 25%.

As the control of the flow rate and the flow rate, the initial 5 to 10 minutes of the dyeing are further controlled by 10 minutes from the appropriate flow rate and the flow rate.
It has been confirmed that when the amount is reduced by about 20%, the path of the dyeing liquid 3 is less likely to be constant, and the dyeing is necessarily uniform.

By the way, when the flow rate and the flow velocity are reduced,
Since the circulation speed of the dyeing liquid 3 in the apparatus becomes slow, the temperature of the dyeing liquid 3 becomes uneven (especially in the vicinity of the heating / cooling device 25 and low in other parts), particularly when the dyeing liquid 3 is heated. This uneven temperature tends to cause uneven dyeing.

However, the pulse staining process does not simply reduce the flow rate and flow rate by about 15 to 25% than the normal appropriate values, but employs a method of returning to the original flow rate and flow rate in a predetermined cycle. Even with the method of reducing the flow rate and the flow rate to the above-described levels, the temperature of the dyeing liquid 3 becomes substantially uniform, and thus uniform dyeing becomes possible.

The reverse dyeing process reverses the discharge direction of the circulating pump 4 as necessary,
And the direction from the liquid reservoir 1 to the bobbin 5.

According to this reversal dyeing process, the inside and outside of the wound body 6 (ordinary cheese dyeing method) and the wound body 6
From the outside to the inside, the dyeing liquid 3 passes through the thread wound body 6, and the passage of the dyeing liquid 3 is not constant as in the case of the pulse dyeing treatment, and the dyeing is inevitably performed uniformly.

In the figure, reference symbol A indicates a representative example of the differential pressure waveform during normal rotation, and reference symbol B indicates a representative example of the differential pressure waveform during reverse rotation. As described above, the reversal dyeing treatment and the pulse dyeing treatment can be used in combination, and this combination enables more uniform staining.

In the reversal dyeing process, when reversing the discharge direction of the dyeing liquid 3, if the reversal is performed rapidly, the load acting on the circulating pump 4 is large. Peak current), fuse blowing, and failures are likely to occur.

Therefore, it is good to stop the circulation pump 4 for a predetermined time at the time of reversing. However, when dyeing is performed while heating the dyeing liquor 3, the dyeing liquor 3 is not stirred by the stop of the circulation pump 4, and is heated and cooled. When the dyeing liquid 3 is dyed while being heated by the apparatus 25, the temperature of the dyeing liquid 3 becomes uneven and dyeing becomes uneven.

Therefore, in such a case, the discharge force of the circulation pump 4 is further reduced by about 15 to 20% before the reversal, and then the circulation pump 4 and the heating / cooling device 25 are stopped (this heating / cooling device). With the stop of 25, the dyeing liquor 3 is not heated and the temperature does not become non-uniform.) Then, the discharge direction of the circulation pump 4 is reversed, and after this reversal, the discharge force is gradually increased, and this discharge is performed. If the method of restarting the heating by the heating / cooling device 25 after the power is increased to some extent is performed, the load acting on the circulation pump 4 at the time of reversal is small, and the temperature of the dyeing liquor 3 is maintained in a uniform state. Dyeing can be performed without uneven dyeing.

It has been experimentally confirmed that, according to this reversing method, dyeing without unevenness in dyeing can be achieved even with rapid reversal of a circulation stop time of several seconds.

By the way, there is a method of dyeing by introducing air into the liquid storage tank 1 to pressurize the liquid storage tank 1 during dyeing. It is known that the dyeing method using the pressure dyes the yarn 2 better than when the pressure is not applied.

On the other hand, in the reversal dyeing process, it has been confirmed that the level of the dye solution 3 in the liquid reservoir 1 moves up and down during reversal. Therefore, when the upper part of the bobbin 5 is exposed from the dyeing liquid 3 due to the upward and downward movement of the liquid level, particularly in the case of the dyeing method using pressure, bubbles are generated from the liquid passage hole of the exposed part. 3 and the air bubbles may cause uneven dyeing.

However, as described above, in the reverse dyeing process,
Since the discharge force of the circulation pump 4 is reduced by about 15 to 20% before the reversal, the up and down movement of the liquid level of the dyeing liquid 3 due to the reversal is small. Therefore, even in the dyeing method using pressure, The yarn 2 can be dyed favorably without unevenness in dyeing without mixing bubbles in the dyeing liquid 3.

Next, the dye discharging process will be described in detail.

In the dyeing liquid discharging process, when the polyester yarn 2 is adopted as the yarn 2, the dyeing liquid 3 is simply removed from the liquid tank 1.
The method is to eliminate the phenomenon that a white mist called an oligomer is scattered and sprayed into the air at the time of rewinding after the yarn 2 is taken out. The dyeing of the polyester yarn 2 is generally carried out using an acid dye. The generation of the oligomer can also be prevented by changing the dye to an alkali dye. The result is different from the previous color.

When the yarn 2 is dyed with the dye 3, the dye 3
Is heated to about 130 ° C., and when the dye 3 is removed, the dye solution 3 is cooled to 110 to 120 ° C. still,
This cooling is preferably performed using the heating and cooling device 25.

At the time of this cooling, the discharge pressure of the circulation pump 4 is slightly reduced by the control of the inverter 23. According to this method, by lowering the discharge pressure, the flow rate of the dye solution 3 passing through the bobbin 6 is reduced, and the oligomer adhering deeply into the fibers of the yarn 2 is discharged by the dye solution passing through the bobbin 6. 3
And will be washed away. At this time,
On the contrary, it has been confirmed by an experiment that when the pressure of the dyeing solution 3 is increased, the amount of the oligomer generated increases.

It has been experimentally confirmed that the discharge pressure should be reduced by 23 to 33% as compared with the time of dyeing.

In this case, when the dye solution 3 is not pulsated or reversed, the adhesion of the oligomer to the yarn 2 is eliminated (this is considered to be due to the same reason that the dye is difficult to adhere).

Subsequently, the dyeing liquid 3 is discharged from the liquid storage tank 1 while supplying air from the air passage pipe 16 to the liquid storage tank 1. Therefore, when the dyeing liquid 3 is discharged, the inside of the liquid tank 1 is not reduced in pressure, and the yarn 2 and the oligomer contained in the dyeing liquid 3 are prevented from being scattered and sprayed in the liquid tank 1.

By the way, it has been confirmed by experiments that the above structure can prevent the oligomer from being scattered and sprayed. The reason for this is not clear, but the discharge pressure of the circulation pump 4 and the amount of the oligomer scattered and sprayed are not clear. Because of the relationship (the higher the discharge pressure of the circulation pump 4 is, the greater the amount of the scattered spray of the oligomer becomes), the flow rate of the dye solution 3 passing through the bobbin 6 decreases, and the dye 3 adheres deeply into the fibers constituting the yarn 2. The discharge of the dye liquor 3 in a situation where it is difficult for the oligomer to be mist, since the oligomer which is easily flowed together with the dye liquor 3 and the inside of the liquid storage tank 1 is not depressurized by the supply of air when the dye liquor 3 is discharged. Is considered to be the reason why the generation of the oligomer can be prevented.

Further, since the temperature of the dyeing liquid 3 is cooled, it is not necessary to add a cooling device to the liquid discharging section 27, and the cost is very low in this respect.

Next, the oiling agent adhesion treatment will be described in detail.

Into the liquid reservoir 1 from which the dye solution 3 has been removed, water is added as a solvent. At this time, the opening / closing lid 15 of the dye tank 1 is opened,
Although it is better to remove the bobbin 6 from the liquid storage tank 1, the bobbin 6 may be kept in the dye tank 1.

Subsequently, the water is heated by the heating / cooling device 25 to a temperature (for example, 55 ° C.) at which a normal oiling agent is deposited. At this time, heating is performed while circulating water by the circulation pump 4.

Subsequently, the heating of the water is stopped.

Subsequently, an oiling agent is added to the water heated to the predetermined temperature.

The amount of the oiling agent to be used is 50 to 70% of the usual amount (how many liters per liter of water).
(Volume) is good. The input amount of the oiling agent was confirmed by experiments, and in the case of the method of the present embodiment, since the water was mixed in advance with the oiling agent in a state where the water was heated in advance and homogenized, even with this smaller input amount than usual. And the oiling agent adheres to the yarn 2 satisfactorily and uniformly. Note that a normal input amount may be used.

Subsequently, the bobbin 6 is introduced into the liquid reservoir 1, and the yarn 2 is brought into contact with a mixture of water and an oiling agent to cause the oiling agent to adhere to the yarn 2.

At this time, if the mixture of the solvent and the oiling agent is circulated at a flow rate or a flow rate lower than the flow rate or the flow rate of the dyeing liquid 3 at the time of dyeing, the adhesion of the oiling agent is further uniformed. When the mixture of the solvent and the oiling agent is circulated, if the mixture is circulated at a flow rate or a flow rate that is 15 to 25% lower than the flow rate or the flow rate of the dyeing liquid 3 at the time of dyeing, the adhesion of the oiling agent is even more uniform. .

At this time, the mixture of water and the oiling agent is subjected to pulsation or reversal in the same manner as in the above-mentioned pulse dyeing treatment or reversal dyeing treatment (or may be used in combination). It is confirmed that the oiling agent adheres extremely well and uniformly to the yarn 2 by the same principle as the pulse dyeing treatment and the reverse dyeing treatment.

Further, the frequency of the pulsating flow or the inversion (the number of cycles per second) is preferably lower than the frequency at the time of staining.

For example, a method in which a heated solvent is introduced into a separately prepared container, an oiling agent is further introduced and mixed with the solvent by stirring, and this mixture is brought into contact with the dyed yarn 2 is adopted. Is also good.

When the yarn 2 made of polyester was dyed using each of the above systems, the yarn 2 could be dyed in a short time without uneven dyeing, there was no problem with the oligomer after dyeing, and the oiling agent was also used. It was possible to obtain a uniform and well-adhered yarn 2.

In the case of dyeing other yarns 2 such as wool, acrylic, rayon, etc., since there is no problem of the oligomer from the beginning, a usual method of discharging the dyeing liquid is employed without using the above-mentioned dyeing liquid discharging treatment. However, there was no dyeing unevenness, and the yarn 2 to which the oiling agent was uniformly and satisfactorily attached was obtained.

In the present embodiment, as described above, the dyeing liquid 3 passes through the entire bobbin 6 satisfactorily by the pulse dyeing treatment or the reversal dyeing treatment, so that the yarn 2 is uniformly and well dyed. In other words, a very practical dyeing method in which the oiling agent can be uniformly and satisfactorily adhered to the dyed yarn 2 by the oiling agent adhering process. The problem of oligomers generated at the time of dyeing can be solved, and in this respect, the dyeing method is excellent in practicality and workability.

The control of the circulating pump 4 such as the pulsating flow during the pulse dyeing process, the reversal during the reversal dyeing process, and the pulsating flow or reversal during the oiling agent adhering process are all performed by the inverter 23.
Therefore, each of these processes can be performed extremely easily.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a dyeing apparatus of the present embodiment.

FIG. 2 is an explanatory diagram illustrating an example of a pulsating flow and reversal of the present embodiment.

FIG. 3 is an explanatory diagram illustrating an example of a pulsating flow and reversal of the present embodiment.

[Explanation of symbols]

 1 liquid storage tank 2 thread 3 dye solution

Claims (13)

[Claims] 1. The liquid storage tank while circulating the dye in the liquid storage tank, while increasing or decreasing the flow rate or flow velocity of the dye, or reversing the circulation direction of the dye in the liquid storage tank as necessary. In the dyeing treatment method for dyeing the yarn inside, the heated solvent and the oiling agent are introduced into the container, and the solvent and the oiling agent are stirred and mixed, and the mixture of the solvent and the oiling agent is mixed with the dyed yarn. A dyeing method comprising contacting the yarn with an oiling agent. 2. The dyeing method according to claim 1, wherein
A dyeing method comprising: circulating a mixture of a solvent and an oiling agent at a flow rate or a flow rate lower than the flow rate or the flow rate of a dyeing solution at the time of dyeing when attaching the oiling agent to a yarn. 3. The dyeing treatment method according to claim 2,
A dyeing method comprising: circulating a mixture of a solvent and an oiling agent at a flow rate or a flow rate lower by 15 to 25% than a flow rate or a flow rate of a dyeing liquid at the time of dyeing. 4. The dyeing method according to claim 1, wherein a liquid storage tank from which the dyeing solution is removed after dyeing is used as the container. 5. The dyeing method according to claim 4, wherein
When introducing the heated solvent and the oiling agent into the liquor tank from which the dye liquor has been removed, first introduce the solvent into the liquor tank from which the liquor has been removed, and then heat the solvent to a predetermined temperature. A dyeing method comprising: stopping the heating; subsequently, adding an oiling agent to the heated solvent; and stirring and mixing the solvent and the oiling agent. 6. The dyeing method according to claim 4, wherein when the heated solvent and the oiling agent are introduced into the liquid storage tank from which the dye solution has been removed, the yarn in the liquid storage tank is removed. After the removal, the heated solvent and the oiling agent are introduced and the solvent and the oiling agent are stirred and mixed,
Subsequently, the dyeing method is characterized in that the removed yarn is introduced into a mixture of the solvent and the oiling agent, and the oiling agent is attached to the yarn. 7. The dyeing treatment method according to claim 1, wherein a mixture of a solvent and an oiling agent is brought into contact with the dyed yarn to cause the oiling agent to adhere to the yarn. A dyeing method comprising: circulating the mixture while increasing or decreasing the flow rate or flow velocity of the mixture, or reversing the circulation direction of the mixture as necessary, to cause the oiling agent to adhere to the yarn. 8. The dyeing method according to claim 1, wherein when the dyeing liquid is discharged from the liquid storage tank after the dyeing, the dyeing liquid is cooled while cooling the liquid in the liquid storage tank. A dyeing method comprising: circulating, reducing the flow rate or the flow rate of the dyeing liquid during the circulation as compared with dyeing, and then discharging the dyeing liquid from the liquid tank. 9. The dyeing treatment method according to claim 8,
A dyeing method characterized in that the flow rate or flow rate of the dyeing liquid at the time of discharging the dyeing liquid is decreased by 23 to 33% from the flow rate or flow rate at the time of dyeing. 10. The liquid storage tank while circulating the dye liquid in the liquid storage tank, while increasing or decreasing the flow rate or flow velocity of the dye liquid, or reversing the circulation direction of the dye liquid in the liquid storage tank as necessary. In the dyeing method for dyeing the yarn inside, when the dye liquor is discharged from the liquor tank after dyeing is completed, the dye liquor is circulated while cooling the liquor in the liquor tank. A dyeing method comprising reducing the flow rate or the flow rate from that used for dyeing, and then discharging the dyeing liquid from the liquid tank. 11. A method for dyeing a yarn with a dye solution in a liquid storage tank, wherein a heated solvent and an oiling agent are introduced into a container, and the solvent and the oiling agent are mixed by stirring. A dyeing treatment method comprising: contacting a mixture with a dyed yarn with a dyed yarn to cause an oiling agent to adhere to the yarn. 12. A method of dyeing a yarn with a dye in a liquid reservoir, dyeing the yarn with the dye, removing the dye from the liquid reservoir, introducing a solvent into the liquid reservoir, Subsequently, after heating the solvent to a predetermined temperature, the heating is stopped. Subsequently, an oiling agent is added to the heated solvent, and then the solvent and the oiling agent are stirred and mixed to form the yarn. A dyeing method comprising attaching an oiling agent. 13. A method for dyeing a yarn with a dye in a liquor tank, wherein when the dye liquor is discharged from the liquor tank after dyeing, the dye liquor is circulated while cooling the liquor in the liquor tank. A dyeing method comprising: reducing the flow rate or the flow rate of the dyeing solution during the circulation as compared with the dyeing process, and then discharging the dyeing solution from the solution tank.