KR100398510B1 - Continuous dyeing method for PTT carpet - Google Patents

Abstract

The present invention is sprayed by heating the salt solution to 45 ~ 100 ℃ in the continuous dyeing of PTT BCF carpet, steaming with saturated steam so that the internal temperature of the steamer is 102 ~ 150 ℃ by using an anti-frosting inhibitor even if not used It is to make uniform dyeing same as dyed.

Description

Continuous dyeing method for PTT carpet

The present invention relates to a continuous dyeing method of PTT (polytrimethylene terephthalate) carpet, and more particularly, uniformly without generating a frosting phenomenon of the carpet made of PTT BCF heat-treated at 120 ~ 150 ℃ It is about the method which can be dyed.

As a continuous dyeing method of nylon carpet, a salt solution is applied to a carpet sandalwood moving in an applicator, and then steamed with saturated steam in an atmospheric steamer at around 100 ° C.

This dyeing method is called Kuster dyeing.

Edward Kuster, a dyeing machine manufacturer, developed such a dyeing machine, and the term "custer staining" came into being.

In addition, the continuous dyeing method of PET carpet includes a thermosol (THERMOSOL) dyeing method in which a salt solution is applied in an applicator and then treated with dry heat at 180 to 220 ° C. and a saturated steam at about 130 to 150 ° C. in a high pressure steamer.

However, the carpet made of PTT BCF has excellent elastic recovery rate, beautiful appearance, touch and abrasion resistance, antifouling property and antistatic property, which are excellent advantages of nylon, and dyeing at somewhat lower temperature than PET. This has the advantage of being possible.

In addition, when dyeing without using frosting agent in general continuous dyeing process, when carpet sandal with room temperature salt solution enters into the steamer, water vapor condenses into the upper part of the pile of low temperature carpet, causing water stain defects such as frosting phenomenon. Since there has been a problem that must be dyed using an frosting inhibitor to prevent such frosting.

The present invention has a technical problem to provide a continuous dyeing method of the PTT carpet to prevent the frosting phenomenon in the continuous dyeing of PTT BCF carpet without the use of an frosting inhibitor.

1 is a process schematic diagram of the continuous dyeing method according to the present invention.

In the present invention, an aqueous salt solution containing a disperse dye, a paste, and a dyeing aid is heated to a temperature of 45 to 100 ° C. using an applicator in a carpet using PTT BCF (bulked continuous filament) heated to 120 to 150 ° C. After giving the PTT carpet sandalwood at a pickup rate of 100 to 500% by weight and treating it for 5 to 10 minutes with a saturated steam at 102 to 150 ° C in a steamer, it is washed continuously in a washing tank and dried in a dryer. It features.

Hereinafter, the present invention will be described in more detail by way of example.

The pick-up rate is 100-500 for the aqueous salt solution containing at least one dispersion dye through the applicator 3 while continuously moving the carpet sandalwood 1 using PTT BCF heat-treated at 120-150 ° C. %, More preferably, it is 250 to 350%.

To control the pickup, a method of controlling the viscosity of the buffer is used.

The synthetic agent uses a synthetic or natural ester.

The concentration of the inhibitor is different depending on the type of each agent, but in order to obtain a desired pickup rate, the concentration is adjusted to be used.

The moving speed of carpet sandalwood affects production and dye concentration.

If it is too fast, the amount of dyeing is too small to obtain sufficient color concentration, and if it is slow, the production amount is small and the advantages as a continuous process are lost.

In the present invention, the movement speed of the carpet sandalwood is not limited, but usually about 5 to 10 meters per minute is suitable, preferably 7 to 8 meters per minute.

In the present invention, by controlling the temperature of the salt solution imparted by the applicator (3) to 45 ~ 100 ℃ using a separate heating device so that the difference between the temperature in the steamer (4) to reduce the water vapor of the upper part of the pile of the carpet Condensation, ie staining due to frosting was prevented.

In other words, the present invention can be effectively uniformly dyeing without the use of drugs such as frosting inhibitor.

In addition, the present invention may be used according to the purpose to aid the dyeing, such as penetration enhancer, UV absorber, dye migration inhibitor.

In the present invention, in order to make the salt solution heated to 45 ~ 100 ℃ in general, in addition to the method of heating the salt solution to the appropriate temperature in the salt input tank using a method for recovering heat to the steam line discharged from the inside of the steamer to the outside to save energy You can.

In such a method, a general heat recovery apparatus can be used, and a conventional heat recovery apparatus is also used in the present invention.

In this invention, the temperature of the steamer 4 is 102-150 degreeC, Preferably it is 120-140 degreeC, and it heat-treats for 5 to 10 minutes, and permeates dye into the fiber inside.

The steam used at this time is advantageous in terms of dyeing efficiency of saturated steam.

Dye introduced into the steamer 4 is introduced into the steamer (4), unlike the existing method is introduced in a heated state close to the temperature inside the steamer (4) it can significantly reduce the frosting.

If a low temperature carpet enters the steamer 4, there is a fluctuation in the internal steam state, resulting in an uneven temperature distribution inside the steamer 4 and a decrease in the temperature of the steamer 4. The invention eliminates this phenomenon, so that uniform dyeing is possible.

In addition, the time required to raise the temperature of the salt solution is also shortened, so it is very efficient in terms of shortening the dyeing time.

In the present invention, in particular, in order to obtain sufficient dyeing concentration in a relatively low temperature range of 102 to 150 ℃ using a combination of agents such as a fixing accelerator, a migration inhibitor, or the like to increase the dyeing concentration to increase the dyeing concentration using a carrier Can also be.

The present invention is also applicable to multicolor dyeing, but in this case, a heat recovery device is required as much as the chromaticity.

In addition, in the case of dyeing in multi colors, the applicator 3 may apply a spray method or a jet spray method.

Examples 1-3

Disperse dyes use high energy type and steamer temperature is 140 ℃

The quality of the dye was judged by observing the degree of dye penetration into the fiber according to the heat treatment time.

The results are shown in Table 1.

<Table 1>

Deposition time 5 minutes 7 minutes 10 minutes Dye penetration into the fiber △ ○ ○

○: Good, △: Normal, ×: Poor

The degree of dye penetration into the fiber was confirmed by observing the cross section of the dyed BCF yarn under a microscope. When the dye was penetrated to the inside of the fiber when treated at a steamer temperature of 140 ° C. for 7 minutes, sufficient dyeing was performed. Ring dyeing was observed when treated in time.

Examples 4-6

Disperse dye was used as a high-energy type, and the relative dyeing efficiency (color yield) after steaming for 7 minutes for each steamer temperature was compared with the reference value of 100, the K / S value of the dyestuff treated at 140 ℃.

The results are shown in Table 2.

<Table 2>

Steamer temperature Relative dyeing efficiency (COLOR YIELD) 140 ℃ 100% 120 ℃ 60 to 80% 100 ℃ 50 to 60%

In the case of dyes of high energy type, dyeing efficiency decreases significantly when the temperature of steamer decreases, but dyeing efficiency decreases by about 50% depending on the type of dye when steaming at 100 ℃ compared to 140 ℃.

Examples 7-9

Disperse dyes were used for the low to medium energy type, and the dyeing efficiency of the steamer after 7 minutes of steaming for each temperature of the steamer was compared with the reference value of 100, which is the K / S value of the dyestuff treated at 140 ° C.

The results are shown in Table 3.

<Table 3>

Steamer temperature Relative dyeing efficiency 140 ℃ 100% 120 ℃ 90 to 95% 100 ℃ 70 to 80%

In the case of the low to medium energy type dyes, the decrease in dyeing efficiency was greatly reduced when the heat treatment was performed at 120 ° C. as compared with the case of 140 ° C.

However, dyeing at 100 ° C. still showed low dyeing efficiency and ring-dyeing in which the dye penetrated only to the outside of the fiber.

Therefore, the preferred dyeing conditions under which the dye penetrates completely into the fiber are 5-10 minutes at a steamer temperature of 120-140 ° C.

In addition, only a limited range of dyeing of light to neutral colors was possible under steam at 100 ° C.

Example 10, Comparative Examples 1-2

Disperse dyes used low to medium energy types.

In Example 10, the temperature of the salt solution provided by the applicator was adjusted to 45-100 degreeC, without using an frosting inhibitor.

In Comparative Example 1, the salt solution was added at room temperature without using an frosting agent.

In Comparative Example 2, a salt solution was applied by using an frosting inhibitor and keeping the temperature of the salt solution at room temperature.

After treating the steamer at 120 ℃ for 7 minutes and evaluating the incidence of frosting, the effect of using the anti-frosting agent without using the anti-frosting agent when the salt solution was increased by increasing the salt temperature to 45-100 ℃ Uniform dyeings close to were obtained.

The results are shown in Table 4.

<Table 4>

Frosting phenomenon Example 10 ○ Comparative Example 1 × Comparative Example 2 ◎

◎: Excellent, ○: Good, △: Normal, ×: Poor

According to the present invention, even in the case of continuous dyeing of PTT BCF carpet, a uniformly dyed dye can be obtained without using an frosting inhibitor.

Claims (3)

In the continuous dyeing of heat-treated PTT (Bulked Continuous Filament) carpets of PTT (Burked Continuous Filament), after spraying the aqueous salt solution of the dispersion dye heated to 45 ~ 100 ℃ to the chlorine 100 ~ After picking up at a pickup rate of 500%, the continuous dyeing method of the PTT carpet, characterized in that for 5 to 10 minutes treatment with saturated steam at 102 ~ 150 ℃ in the steamer. The continuous dyeing method of the PTT carpet according to claim 1, wherein the aqueous solution of the disperse dye includes a scavenger, a penetration accelerator, a UV absorber and a dye migration inhibitor. The continuous dyeing method of PTT carpet according to claim 1, wherein the carpet of PTT BCF is heat-treated at 120 to 150 캜.