JP2003213534A - Dyed yarn, fabric by using the same, method for producing dyed yarn and device for producing dyed yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a dyed yarn, capable of obtaining the dyed yarn or a fabric having a good quality without having a undyed or unevenly dyed portions even by using a pigment as a dyestuff, and also not causing environmental pollution and gentle to the environment, and a device for producing the same. <P>SOLUTION: This method for producing the dyed yarn is provided by delivering the yarn (s) from a winding out device 2 continuously for feeding to a mangle 3, immersing the yarn in a dyeing aqueous solution L containing the pigment and a binder, then preliminary drying the dyed yarn (s) in a preliminary drier, then feeding the yarn after the preliminary drying to a main drier 5 to perform the main drying to fix the pigment on the yarn (s) and then winding by a winding device 6. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dyed yarn using a pigment as a dyeing agent, a woven fabric using the dyed yarn, a method for producing the dyed yarn,
The present invention relates to a dyed yarn manufacturing apparatus.

[0002]

2. Description of the Related Art In recent years, with the increasing dependence on textile imports,
In Japan, it is desired to establish unique yarn dyeing technology. In addition, as a general social tendency, there is a great interest in environmental protection, so it is important to establish an environment-friendly technology that does not cause problems such as environmental pollution even when performing yarn dyeing.

By the way, conventionally, dyes have been widely used as a method for dyeing yarn. The yarn dyeing using this dye has an advantage that the dye and the dye are chemically reacted with each other to be dyed and thus the color is not easily lost, and the dyeing is relatively easy.

[0004]

However, when performing yarn dyeing using such a dye, it is necessary to take various measures for environmental protection.

That is, in the case of dyes, the ratio of the dyes that are substantially used for dyeing the yarn is about several percent, and most of the dyes flow out together with water. Also in this case,
200-30 to dye 1 ton of thread for washing with water
Since about 0 ton of water is used, it is necessary to provide a drainage facility having a sufficiently large capacity to treat a large amount of water containing a dye like this. Moreover, it becomes necessary to separately treat sludge, etc. generated after wastewater treatment.
Running costs are high.

The present invention has been made to solve the above-mentioned problems, and by fixing a pigment as a dyeing agent with a binder, dyeing with good quality without color loss or color unevenness in that case is achieved. It is an object of the present invention to provide a method and an apparatus for producing an environmentally friendly dyed yarn, which is capable of obtaining a yarn or a woven fabric, and which does not cause environmental pollution.

[0007]

The present invention has the following features to attain the object mentioned above.

That is, the dyed yarn according to the invention of claim 1 is characterized in that a dyeing agent containing a pigment is impregnated from the surface to the inside.

A woven fabric according to a second aspect of the invention is characterized in that the dyed yarn according to the first aspect is woven.

A method for producing a dyed yarn according to a third aspect of the present invention is a method for producing the dyed yarn according to the first aspect, wherein the yarn is continuously fed out and contains a pigment and a binder. It is characterized in that the dyed yarn is pre-dried, then the main yarn is dried to fix the pigment, and then the yarn is wound up.

The method for producing a dyed yarn according to the invention of claim 4 is characterized in that, in the method of the invention of claim 3, the preliminary drying is carried out by direct heating using an infrared heater.

A method for producing a dyed yarn according to a fifth aspect of the present invention is the method according to the third or fourth aspect of the present invention, wherein when a plurality of yarns are dyed at the same time, the dyed yarns are Is characterized by being pre-dried in a separated state so that they do not contact each other.

A method for producing a dyed yarn according to a sixth aspect of the present invention is the method according to any one of the third to fifth aspects, wherein the main drying is indirect heating using a roller baking machine. It is characterized by being dried by.

An apparatus for producing a dyed yarn according to a seventh aspect of the present invention is an apparatus for producing the dyed yarn according to the first aspect, which comprises an unwinding device for continuously unwinding the yarn and the unwinding device. A dipping device for immersing the yarn supplied from the device in a dyeing aqueous solution containing a pigment and a binder, a pre-dryer for pre-drying the yarn dyed by the dipping device, and a pre-dryer for the pre-drying device. The present invention is characterized by comprising a main dryer for main drying the yarn to fix the pigment, and a winding device for winding the yarn after the main drying by the main dryer.

According to an eighth aspect of the present invention, there is provided the dyed yarn manufacturing apparatus according to the seventh aspect of the present invention, wherein the preliminary dryer is provided with an infrared heater.

According to a ninth aspect of the present invention, in the dyed yarn manufacturing apparatus according to the seventh or eighth aspect of the present invention, the pre-dryer does not have threads contacting each other in the pre-dryer. It is characterized in that a separator for keeping the separated state is provided.

An apparatus for producing a dyed yarn according to a tenth aspect of the present invention is the device of the invention according to any one of the seventh to ninth aspects, wherein each of the outlets of the preliminary dryer and the main dryer is provided. Is characterized in that an accumulator for keeping the tension constant according to the expansion and contraction of the traveling yarn is arranged.

An apparatus for producing a dyed yarn according to an eleventh aspect of the present invention is the structure of the invention according to any one of the seventh to tenth aspects, wherein the dryer has a roller baking machine. It has a feature.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view showing an overall configuration of a dyed yarn manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a front view of a mangle, FIG. 3 is a front sectional view of a preliminary dryer, and FIG. 4 is a front view of an accumulator. FIG. 5 is a front sectional view of the dryer.

The dyed yarn manufacturing apparatus 1 according to this embodiment includes an unwinding device 2 which continuously unwinds a plurality of yarns s in parallel, and the yarn s unwound by the unwinding device 2 includes a pigment and a binder. Mungle 3 as a dipping device to be dipped in dyeing aqueous solution L to be
A pre-dryer 4 for pre-drying, a main dryer 5 for main-drying the thread s pre-dried by the pre-dryer 4 to fix the pigment, and a thread s after main-drying by the main dryer 5. A winding device 6 that winds up is mainly configured.

An accumulator 7 for keeping the tension constant according to the expansion and contraction of the traveling yarn s is arranged at each outlet side of the preliminary dryer 4 and the main dryer 5. In addition, a separator 8 for separating each yarn s after dyeing the yarn before winding by the winding device 6 and a tension roller 9 for keeping the winding tension constant are provided at the front position of the winding device 6. There is.

The unwinding device 2 continuously unwinds the yarn s in the beam winding state and is equipped with a disc plate type brake mechanism (not shown), which is supplied to the mangle 3 by this brake mechanism. The tension of the thread s to be pulled is kept constant.

The mangle 3 includes a dipping tank 12 in which a dyeing aqueous solution L containing a pigment and a binder is stored, and a nip device 13 for removing an excess dyeing aqueous solution contained in the yarn s that has passed through the dipping tank 12. Prepare The dipping tank 12 has two yarn feeding guide rollers 14 for guiding the yarn into the dipping tank 12.
And two submersible rollers 15 for preventing the yarn s from floating. On the other hand, the nip device 13
A pressure roll 16 and a drive roll 17 which are vertically opposed to each other.
The pressure roller 16 is made of synthetic rubber, and the pressure applied by the air cylinder 18 is adjustable. The excess dye contained in the yarn s at the contact point between the rollers 16 and 17 is dyed. The aqueous solution is squeezed.

In the pre-dryer 4, a plurality of infrared heaters 22 (upper and lower in this case) are arranged in the chamber 21 at right and left, respectively, and are orthogonal to the running direction of the yarn.
Further, in the chamber 21, a reflection plate 23 also serving as a heater fixing frame is attached so that the radiant heat of the infrared heater 22 can be effectively used. In addition, an exhaust port (not shown) for exhausting sublimation gas of the dyeing aqueous solution is provided on the ceiling of the chamber 21.

As described above, in this embodiment, since the infrared heater 22 is used, it is possible to perform predrying while keeping the inside of the chamber 21 in a windless state. This is convenient because the risk of contact can be reduced. However, a hot air dryer or the like can be used as long as the separated state can be surely maintained so that adjacent yarns do not come into contact with each other in the chamber 21. The infrared heater 22 here may be a heater that emits not only light in the infrared region but also light in the far infrared region.

Further, the predryer 4 has a chamber 21
Separators 24 are provided at the inlet and outlet of the chamber 21, respectively, so that the threads s do not come into contact with each other due to vibration or the like and keep a separated state. These separators 24 are configured by providing a guide bar 24 individually for each yarn s that runs in parallel with each other, and the surface of each guide bar 24 allows the yarn s to be preliminarily dried to run well. It is coated with heat-resistant polyfluoroethylene and is fixed to a bracket attached to the outer wall of the chamber 21.

The accumulator 7 is of a dancer roll type and is constituted by combining a plurality of tension rollers 27 and an air cylinder 28 with a pressure reducing valve for controlling the tension of the tension rollers 27. The yarn s expands and contracts as it is immersed in the dyeing aqueous solution L or dried, but the accumulator 7 is provided to absorb the slack of the yarn between the devices due to the expansion and contraction of the yarn s. The yarn s can be continuously and smoothly run.

The main dryer 5 is a roller baking machine. The roller baking machine 5 has a chamber 29 having a pair of upper and lower baking rollers 30 and a guide roller 31 and each baking roller 30.
The heat medium is circulated and supplied from the outside of the chamber 29. As the heat medium in this case, for example, heating oil, high-pressure steam, or air or gas heated by a heater is used. Then, the yarn s introduced into the chamber 29 is sequentially wound around the baking rollers 30 on the upper side through the guide rollers 31 on the inlet side, and then is guided to the outside of the chamber 29 via the guide rollers 31 on the outlet side. It is supposed to be done. It should be noted that the surface of each baking roller 30 is coated with heat-resistant polyfluorinated ethylene so that the yarn s to be fully dried runs well.
In addition, an exhaust port (not shown) for exhausting the sublimation gas of the dyeing aqueous solution is provided in the ceiling of the chamber 29.

The separator 8 provided at the front position of the winding device 6 unwinds each yarn s supplied from the accumulator 7, and is constituted by a guide bar 35 provided upright on the frame 34. Further, the winding device 6 is provided with a traverse mechanism (not shown), and by combination with the tension roller 9 in the preceding stage, the dyed yarn s is always wound around the beam with a constant tension.

The continuous yarn dyeing device 1 of this embodiment
Is equipped with an electric control panel (not shown), and the above-mentioned respective units 2 to 6 are controlled in cooperation by this electric control panel.

Next, a method for producing a dyed yarn by using the production apparatus 1 having the above structure will be described.

First, the yarn s which has been wound around the beam in advance is set in the unwinding device 2. As the material of the yarn s, natural fibers such as cotton and hemp, synthetic fibers such as rayon and tetron, or a blended product thereof can be used.

Then, a plurality of yarns s are sequentially fed out in parallel from the unwinding device 2 and supplied to the mangle 3. In this case, the number of the yarns s fed out in parallel is set to about several hundreds in consideration of productivity here, but may be one or several tens of yarns. The traveling speed of the thread s is
Although it depends on the type and thickness of the thread s, the concentration of the dyeing aqueous solution L, etc., it is set to 1 to 10 m / min here.

Each yarn L supplied to the mangle 3 is guided to the dipping tank 12 by the yarn feeding guide roller 14 and dipped in the dyeing aqueous solution L previously stored in the dipping tank 12. At this time, the yarn L is dipped twice in the dyeing aqueous solution L, and the submersible roller 15 prevents the yarn s from floating during the dipping. Here, the pigment contained in the dyeing aqueous solution L is not limited to an inorganic pigment such as a metal salt, but an organic pigment such as a lake can be used. Further, as the binder, an acrylic or alkyd water-soluble synthetic resin is applied. The concentration of the dyeing solution L depends on the type and thickness of the thread s,
It is selected in consideration of the types of pigments and binders, but here it is set to several percent to several tens of percent.

Next, the yarn s is pressed by the upper and lower pressure rolls 16 of the nip device 13 and the drive roll 17, and the excess dyeing aqueous solution L contained in the yarn s that has passed through the dipping tank 12 is applied.
To remove.

Subsequently, the thread s after being dyed with Mangle 3
Is supplied to the preliminary dryer 4. At this time, a plurality of stages (here, upper and lower 4
Be kept separate. And the chamber 21
Inside, each yarn s is directly heated by using the infrared heater 22 and pre-dried. In that case, the temperature inside the chamber 21 depends on the type and thickness of the thread s, the traveling speed of the thread s, and the chamber 21.
It is selected in consideration of the running time, the type and concentration of the dyeing aqueous solution L, etc., but here it is maintained at 120 ° C to 140 ° C.

In the state before the preliminary drying, the yarn s has a substantially circular cross section, so that after being immersed in the dyeing aqueous solution L, the dyeing aqueous solution L permeates substantially uniformly along the circumference of the yarn s. In the preliminary drying, the surface of the yarn s is directly heated uniformly by the infrared heater 22 instead of being heated from the inside like the high frequency dielectric heating, so that the yarn s is gradually dried from the surface. Therefore, due to the so-called migration phenomenon associated with the non-uniformity of water evaporation, the dyeing aqueous solution L
That the pigment of No. 2 moves toward the center of the thread s to cause color loss, or the surface of the thread s is locally heated so that the pigment of L in the dyeing aqueous solution shifts to one side to cause color unevenness. It is possible to prevent problems.

Particularly, as in this embodiment, if the separators 24 keep the threads s not in constant contact with each other, the surface of the threads s is uniformly pre-dried, so that the color caused by the migration phenomenon is generated. This is convenient because the occurrence of unevenness can be prevented more reliably. In this preliminary drying, the yarn s is not completely dried and still contains water. Therefore, even if the yarn s is directly heated by the infrared heater 22, the surface of the yarn s will not be burnt.

Subsequently, the pre-dried yarn s is transferred to the dancer roll type accumulator 7. The yarn s expands and contracts due to absorption and evaporation of water when immersed in the dyeing aqueous solution L and during preliminary drying. However, the slack of the yarn between the devices due to the expansion and contraction of the yarn s is absorbed by the accumulator 7. The tension is kept constant and the vehicle runs smoothly.

Next, the yarn s is supplied to the main dryer 5, and the yarn s is sequentially wound on the pair of upper and lower baking rollers 30 in the chamber 29, and the water is sufficiently evaporated between them to fix the pigment. In that case, the temperature in the chamber 29 is
Is selected in consideration of the type and thickness, the traveling speed of the yarn s, the traveling time in the chamber 29, the type and concentration of the dyeing aqueous solution L, etc., but is maintained at 120 ° C to 180 ° C here.

In this main drying, when the yarn is directly heated by using the infrared heater 22 as in the pre-drying, the surface of the yarn s may be scorched. It is convenient to indirectly heat and dry the above because there is no such fear.

Subsequently, the main dried yarn s is transferred to the dancer roll type accumulator 7. Here, since the slack between the devices due to the shrinkage of the yarn s caused by the main drying is absorbed and the tension is kept constant, the yarn s runs smoothly.

Next, the yarns s that have been finally dried by the main dryer 5 and passed through the accumulator 7 are unraveled by the separator 8, and the tensions of the individual yarns s are kept constant by the tension roller 9 while being illustrated. Do not traverse with a traverse mechanism and wind the beam of the winding device 6.

As a result, it is possible to obtain a dyed yarn of good quality without color loss or surface unevenness, even though the dyeing aqueous solution L containing a pigment as a dyeing agent is used. In addition, since the dyed yarn does not need to be washed with water after dyeing as in the case of using a dye, it can be manufactured in an environmentally friendly state without causing environmental pollution.
Also, by selecting the type of pigment, various color tones can be easily obtained.

[0045]

EXAMPLE In order to confirm whether or not a desired dyed yarn can be produced by using the above apparatus and method, a trial production was carried out under the following conditions.

First, as a thread s, a cotton thread having a thickness of 75 denier is used, and 800 pieces of this cotton thread are set in the unwinding device 2 in a state of being wound around each beam, and then these cotton threads s are sequentially arranged in parallel. It was fed out and supplied to Mangle 3. The running speed of the cotton yarn s at that time was set to 1.5 m / min.

Next, each cotton thread s supplied to the mangle 3 was immersed in L in a dyeing aqueous solution containing a pigment and a binder. As the dyeing aqueous solution L at this time, Irgafore SPD manufactured by Ciba-Geigy was used, and the concentration at that time was set to 10%.

Next, the pressure roller 16 of the nip device 13
The cotton yarn s was pressed by the drive roller 17 and the excess dyeing solution L contained in the dyed cotton yarn s. The pressing force in this case was set to about 60 kg for the entire yarn.

Subsequently, the cotton yarn s dyed with the mangle 3 was supplied to the preliminary dryer 4 for preliminary drying. At this time, the temperature inside the chamber 21 is 120 ° C.
The residence time inside was 45 seconds.

Next, the cotton yarn s thus preliminarily dried is supplied to the main dryer 5 via the accumulator 7 to perform main drying. At this time, the temperature in the chamber 29 is 180 ° C.
The residence time in the chamber 29 was 60 seconds.

Subsequently, the cotton thread s after the main drying was wound around the beam of the winding device 6 through the accumulator 7, the separator 8 and the tension roller 9 in this order.

In this way, when the appearance of the dyed yarn s was inspected, it was confirmed that there was no color loss or color unevenness and the dyeing condition was uniform and good.

[0053]

According to the present invention, the following effects can be obtained. (1) The dyed yarn according to the invention of claim 1 is not dyed by causing a chemical reaction between the yarn and the dye as in the case where a dye is used as a dyeing agent, but a pigment and a yarn. Since and are impregnated inside from the surface in the state of being physically bound via a binder, compared to those using a dye,
It will have a unique color tone and texture.

(2) In the woven fabric according to the second aspect of the present invention, after the dyed yarn having the above characteristics is woven into a cloth or the like and then subjected to crushing or stone washing, a part of the pigment on the surface is removed. It can be dropped off to give it a unique and aesthetic appearance that gives the surface of the fabric an old impression with varying shades.

(3) According to the method for producing a dyed yarn according to the third aspect of the present invention, the yarn is dyed using the dyeing aqueous solution using the pigment as the dyeing agent, so that the dyed yarn is dyed as the dyeing agent. There is no need to wash with water as when using. Therefore, it is possible to manufacture in an environment-friendly state without causing environmental pollution. Also, by selecting the type of pigment, various color tones can be obtained. Moreover, it is possible to perform yarn dyeing without color loss or surface unevenness.

(4) According to the method for producing a dyed yarn according to the invention of claim 4, at the time of preliminary drying, the surface of the yarn is made uniform by an infrared heater instead of heating from the inside like high frequency dielectric heating. Since the yarn is heated directly to the surface, the yarn gradually dries from the surface. Therefore, due to the so-called migration phenomenon that accompanies the evaporation of water,
The pigment in the dyeing aqueous solution moves toward the center of the yarn to cause color loss, or the surface of the yarn is locally heated, causing the pigment in the dyeing aqueous solution to shift to one side and cause color unevenness. Can be prevented.

(5) According to the method for producing a dyed yarn according to the fifth aspect of the present invention, the yarn surface can be uniformly pre-dried if the yarns are kept in contact with each other by the separator. Therefore, it is possible to more reliably prevent the occurrence of color unevenness due to the migration phenomenon.

(6) According to the method for producing a dyed yarn according to the sixth aspect of the present invention, since the yarn is indirectly heated and dried by using a roller baking machine during the main drying, the surface of the yarn is scorched. It is possible to firmly fix the pigment without causing any trouble.

(7) By using the continuous yarn dyeing device according to the seventh aspect, the method for producing a dyed yarn according to the third aspect can be easily and reliably realized.

(8) If the continuous yarn dyeing device according to the eighth aspect is used, the method for producing a dyed yarn according to the fourth aspect can be realized easily and surely.

(9) By using the continuous yarn dyeing device according to the ninth aspect, the method for producing a dyed yarn according to the fifth aspect can be realized easily and surely.

(10) When the continuous yarn dyeing device according to the tenth aspect is used, the yarn expands and contracts by being dipped in a dyeing aqueous solution or dried, but by providing each accumulator, such a yarn can be obtained. It is possible to absorb the slack of the yarn between the devices due to the expansion and contraction, and the yarn can be continuously and smoothly run.

(11) When the continuous yarn dyeing device according to the eleventh aspect is used, the method for producing a dyed yarn according to the sixth aspect can be realized easily and surely.

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of a dyed yarn manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a mangle forming the dyed yarn manufacturing apparatus.

FIG. 3 is a front cross-sectional view of a preliminary dryer that constitutes the dyed yarn manufacturing apparatus.

FIG. 4 is a front view of an accumulator that constitutes the dyed yarn manufacturing apparatus.

FIG. 5 is a front sectional view of the present dryer which constitutes the dyed yarn manufacturing apparatus.

[Explanation of symbols]

s yarn, 1 dyed yarn manufacturing device, 2 unwinding device, 3 mangle (dipping device), 4 preliminary dryer, 5 dryer (roller baking machine), 6 winding device, 7 accumulator, 8 separator, L dyeing Aqueous solution, 22 infrared heater, 24 separator.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) D06P 5/20 D06P 5/20 C (72) Inventor Yoshihito Hashimoto 446-2 Nakamura-cho, Naka-cho, Taka-gun, Hyogo Prefecture (72) Inventor, Toru Mizushima, Toru Mizushima, 2-18-1, Izumino-cho, Kanazawa-shi, Ishikawa No. 605, F-term (reference) 4H057 AA01 AA02 BA15 CA18 CA36 CB08 CC02 DA01 DA33 FA18 FA19 FA25 GA07 HA01 JA03 JA10 JB03 4L036 AA01 MA04 MA05 MA08 MA09 PA18 PA26 4L048 AA07 AA08 AA09 AA20 AC01

Claims (11)

[Claims] 1. A dyed yarn, wherein a dyeing agent containing a pigment is impregnated from the surface to the inside. 2. A woven fabric comprising the dyed yarn according to claim 1 woven. 3. A method for producing a dyed yarn according to claim 1, wherein the yarn is continuously paid out and immersed in a dyeing aqueous solution containing a pigment and a binder, and then the dyed yarn is pre-dried. The method for producing a dyed yarn is characterized by the following steps: main drying, fixing the pigment, and winding. 4. The method for producing a dyed yarn according to claim 3, wherein the preliminary drying is performed by direct heating using an infrared heater. 5. The method according to claim 3 or 4, wherein when a plurality of yarns are dyed at the same time, the dyed yarns are pre-dried in a separated state so as not to come into contact with each other. Manufacturing method of dyed yarn. 6. The method for producing a dyed yarn according to claim 3, wherein the main drying is drying by indirect heating using a roller baking machine. 7. An apparatus for producing the dyed yarn according to claim 1, comprising an unwinding device that continuously unwinds the yarn, and the yarn supplied from this unwinding device includes a pigment and a binder. Immersion device for immersing in dyeing solution, pre-dryer for pre-drying yarn dyed by this dipping device, main-drying for yarn pre-dried by this pre-dryer to fix pigment An apparatus for producing dyed yarn, comprising: a machine; and a winding device that winds up the yarn after the main drying by the main dryer. 8. The dyed yarn manufacturing apparatus according to claim 7, wherein the preliminary dryer is provided with an infrared heater. 9. The dyeing according to claim 7 or 8, wherein the preliminary dryer is provided with a separator that maintains a separated state so that the threads do not come into contact with each other in the preliminary dryer. Yarn manufacturing equipment. 10. An accumulator for maintaining a constant tension according to the expansion and contraction of traveling yarns is arranged at each outlet side of the preliminary dryer and the main dryer. An apparatus for producing a dyed yarn according to claim 9. 11. The dryer according to claim 7, further comprising a roller baking machine.
An apparatus for producing a dyed yarn according to any one of 1.