KR101936337B1 - Snow white method for the knitted cellulose fiber - Google Patents

Abstract

The present invention relates to a snow-white method of knit cellulose fiber. More specifically, the present invention relates to a snow-white method of knit cellulose fiber using a CPB dyeing method, wherein a batch process is performed by using CPB, a semi-dyeing continuous method, unlike a conventional dip dyeing method and, consequently, the process and energy consumption can be reduced. In the present invention, disclosed is a snow-white method of knit cellulose fiber comprising: a fiber transferring step of preparing knit cellulose fiber and transferring the fiber product to a nip-type CPB padder by using transfer rollers; a step of preparing a processing liquid, comprising a scouring agent, a penetrant, a hydrogen peroxide solution, a hydrous stabilizer, a sequestering agent and a white dye, and a sodium hydroxide (NaOH) solution and padding fiber by supplying the processing liquid and the sodium hydroxide solution at the certain rate to the padder by using a metering pump; an aging step of winding the padded fiber by using a CPB cart and then aging the same for 2-24 hours; a steam process for transferring the fiber, having been processed by the aging step, to a steaming bath and performing a steaming process by providing saturated steam having a 10% or greater moisture rate in the steam in a steaming apparatus with an internal temperature of 80-105°C; a washing process of performing continuous washing by sequentially transferring fabric, having been processed by the steaming process, to a plurality of washing baths arranged in a continuous manner; and a tenter process of drying the fiber, having been processed by the washing process, in a condition of a temperature at 140-180°C at a speed of 20-50 m/min in a tenter machine.

Description

Snow white method for knitted cellulose fiber [0002]

The present invention relates to a snow white method of knitted cellulose fibers, and more particularly, to a method of treating snow white of knit cellulose fibers by treating a refining, bleaching process and a fluorescent whitening agent simultaneously using a CPB method, CPB staining method which can not process in a continuous process and can process process which had to be refined, bleaching after fluorescent whitening agent treatment or dyed by dipping process by batch process using CPB semi-dyeing process, can be shortened and energy consumption can be reduced To a method of snow white of knitted cellulose fibers.

The CPB dyeing technique has been carried out using pretreatment (refining, bleaching) after drying the fabric and using dyes and formulations suitable for CPB.

In the case of Snow White products, attempts have been made to apply fluorescent whitening agents in the pretreatment (refining, bleaching) of fabrics. However, due to problems such as drop in whiteness and uneven dyeing of fluorescent whitening agent, And the like.

Because of this problem, the CPB has the problem that the difference in the hairiness of the fabric due to the difference of the process, the difference in the gloss, the weight and the width due to the difference in the production of the same CPB product, It is said to be impossible.

CPB white process of common fabric is CPB refining, bleaching → continuous water washing → tenter drying → direct dyeing or dipping → tentering process. In the case of knit CPB dyeing, development of white dyeing is not commercialized, have.

Korean Patent Publication No. 10-2013-0090661. Korean Patent Registration No. 10-1297820.

In the present invention, a CPB processing tank liquid containing a scouring agent, a bleaching agent and a fluorescent whitening agent is prepared using a CPB fader, the processing auxiliary liquid and sodium hydroxide are fed at a predetermined ratio and padded using a nip method of the fader The present invention provides a snow white method of knitted cellulose fibers which is then subjected to a batch process by rinsing and then washing with water using a continuous water washing apparatus, followed by drying after tenter drying.

The present invention provides a snow white method of knitted cellulose fibers,
Preparing a knitted cellulose fiber and transferring the fiber product to a nip type CPB fader using a transfer roller;
A working solution and a sodium hydroxide (NaOH) solution containing a scouring agent, a penetrating agent, a hydrogen peroxide solution, a peroxide stabilizer, a metal ion sequestrant and a white dye were each prepared, and the above working solution and sodium hydroxide solution To a CPB fader in a 4: 1 liquid ratio to paddle the fibers;
A step of aging the fibers after the padded fibers are wound using a CPB roller and aging for 2 to 24 hours;
The fibers having been subjected to the aging step are transferred to a steaming bath to supply the saturated steam having a moisture content of 10% or more in the steam at a temperature of 80-105 ° C inside the steamer and steaming for 6-15 minutes Steam process;
A water washing step of successively transferring the fabric finished with the steam process to a plurality of water treatment tanks successively configured to continuously wash the water; And
And a tentering step of drying the fibers having been subjected to the water washing step at a temperature of 140 to 180 ° C at a speed of 20 to 50 m / min in a tenter machine.
The continuous water washing process of the washing process is performed by transferring the fibers to the first water bath and washing the water at a temperature of 98 to 100 ° C for 20 to 30 seconds, And the water is treated at a temperature of 55 to 65 ° C for 20 to 30 seconds. The fabric washed with water in the second water tank is transferred to the third water tank and is subjected to washing treatment at a temperature of 25 to 35 ° C ,
10 to 30 parts by weight of a scouring agent, 1 to 5 parts by weight of a penetrating agent, 10 to 60 parts by weight of hydrogen peroxide, 5 to 20 parts by weight of a hydrous stabilizer, 5 to 10 parts by weight of a metal ion blocking agent, 0.1 And 3 parts by weight of the above components, wherein each of the components is mixed with 10 to 30 g / L of a scouring agent, 1 to 5 g / L of a penetrant, 10 to 60 g / L of hydrogen peroxide, 5 to 20 g / 5 to 10 g / L of a metal ion sequestering agent and 0.1 to 3 g / L of a white dye in an aqueous solution, and mixing them so as to satisfy a weight ratio of constituent components of the above- Stabilizer: metal ion blocking agent: white dye in a ratio of 20: 2: 40:
10: 10: 2 by weight,
The sodium hydroxide solution is characterized by using 5 to 10 g / L aqueous solution of sodium hydroxide.

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Here, the total amount of the mixed solution of the working solution and the sodium hydroxide solution supplied to the CPB faders is adjusted to 10 L or less and supplied.

The snow white method of the knit cellulose fiber provided by the present invention is a batch process by simultaneously treating the refining, bleaching and fluorescent brightener using the CPB semi-dyeing process, thereby reducing the process time and energy consumption I have.

In addition, it has the effect of reducing the production cost by shortening the process and energy consumption.

1 is a process diagram illustrating a CPB semi-dyeing process applied to the Snow White method of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in more detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram illustrating a CPB semi-dyeing process applied to a snow white method of knit cellulose fibers according to the present invention, wherein a typical continuous dyeing process comprises a continuous process of padding → pad drying → salt padding → steam → washing , The semi-dyeing process applied in the present invention is a process requiring an aging process after padding as shown in FIG. Utilizing this semi-dyeing process, the present inventors have completed the snow white method of knitted cellulose fibers.

More specifically,

The present invention relates to a snow white method of knit cellulose fibers, and more particularly, to a method for treating snowflake of knit cellulose fibers by treating the conventional refining, a fluorescent whitening agent after bleaching, or a dyeing step by a salt- It is an object of the present invention to provide a method for snow white of knit cellulose fibers by a batch process by simultaneously treating bleaching agent and fluorescent whitening agent,

According to the present invention, the snow white method of knitted cellulose fibers provided

Preparing a knitted cellulose fiber and transferring the fiber product to a nip type CPB fader using a transfer roller;

A working solution and a sodium hydroxide (NaOH) solution containing a scouring agent, a penetrating agent, a hydrogen peroxide solution, a peroxide stabilizer, a metal ion sequestrant and a white dye were each prepared, and the above working solution and sodium hydroxide solution To a predetermined ratio to paddle the fibers;

A step of aging the fibers after the padded fibers are wound using a CPB roller and aging for 2 to 24 hours;

The fiber having been subjected to the above-mentioned aging step is transferred to a steaming bath to supply the saturated steam having a moisture content of 10% or more in the steam at a temperature of 80 to 105 DEG C in the inside of the steamer and steaming for 6 to 15 minutes Steam process;

A water washing step of successively transferring the fabric finished with the steam process to a plurality of water treatment tanks successively configured to continuously wash the water; And

And a tentering step of drying the fiber having been subjected to the water washing step at a temperature of 140 to 180 ° C at a speed of 20 to 50 m / min in a tenter.

In this case, in the steam process, the internal temperature of the steamer may be adjusted to 80 to 105 ° C depending on the whiteness of the fabric and the treatment time. If the steam temperature is lower than 80 ° C, the whiteness may be lowered, In the case of poly blend products, there may be a problem when the fabric is folded due to the stagnation of the steam process.

According to the present invention, the processing tank liquid contains 10 to 30 parts by weight of a scouring agent, 1 to 5 parts by weight of a penetrating agent, 10 to 60 parts by weight of hydrogen peroxide, 5 to 20 parts by weight of a hydrous stabilizer, 5 to 10 parts by weight of a metal ion blocking agent, 0.1 to 3 parts by weight of a mixed solution prepared by mixing the knitted cellulose fibers can improve the whiteness of the knitted cellulose fibers. More preferably, each component constituting the working fluid is prepared in the form of an aqueous solution and then mixed. Each of the components is mixed with 10 to 30 g / L of a scouring agent, 1 to 5 g / L of a penetrant, 10 to 60 g L of hydrogen peroxide, 5 to 20 g / L of a water stabilizer, 5 to 10 g / L of a metal ion sequestering agent and 0.1 to 3 g / L of a white dye. It is preferable to mix them so as to satisfy them.

More preferably, the processing tank solution is best mixed with a scouring agent: a penetrating agent: hydrogen peroxide: a hydrous stabilizer: a metal ion sequestering agent: a white dye in a weight ratio of 20: 2: 40: 10: 10: 2.

At this time, each component of the processing aid to be used is one that is commonly used, and the components used to complete the present invention include alkylalkoxylate as a scouring agent, polyglycol ether (Methylenephosphonic aicd) as a water stabilizer, a phosphonic acid as a metal ion blocking agent, and a stibene derivative (white dye) as a water stabilizer were added to an aqueous solution containing polyglycolether fatty alcohol Respectively.

According to the present invention, the sodium hydroxide solution uses an aqueous sodium hydroxide solution of 5 to 10 g / L. If the concentration is out of the above range, the stability of the dye and the preparation may be deteriorated and the listing and ending phenomenon may occur.

According to the present invention, it is preferable that the working tank solution and the aqueous sodium hydroxide solution are supplied to the CPB faders at a ratio of 4: 1.

Preferably, the total amount of the mixed solution of the working solution and the sodium hydroxide solution supplied to the CPB faders is adjusted to 10 L or less. More preferably, it is best to supply the total amount of 8 to 10 L so that the preparation and the dye can be exchanged at an early time. The reason is that, in a state where a salt solution having a concentration of more than 10 L is mixed, a delamination phenomenon may occur due to degradation of the stability of the white dyestuff with sodium hydroxide (NaOH), and the listing and ending phenomenon may occur during padding there is a problem.

According to the present invention, the fibers that have been subjected to the steam process are successively transferred to a water bath arranged continuously and washed. At this time, preferably, the fibers are transferred to a first water bath and subjected to a water washing treatment at a temperature of 98 to 100 ° C for 20 to 30 seconds, and the fabric washed with water in the first water washing tank is transferred to a second water bath Treated at a temperature of 55 to 65 占 폚 for 20 to 30 seconds and then transferred to the third water tank at a temperature of 25 to 35 占 폚.

The purpose of this continuous washing is to remove unreacted dyes, to remove impurities, and to neutralize alkali.

The fibers thus washed with water are subjected to a drying treatment at a temperature of 140 to 180 ° C at a speed of 20 to 50 m / min in a tenter machine, thereby completing the Snow White processing of the knitted cellulose fibers.

The snow white method of the knitted cellulose fiber according to the present invention was adopted to compare the energy consumption of the Snow White process using the existing sinking process and the method of the present invention, and the results are shown in Table 1 below.

Treatment process water
(kg) Electricity
(kWh) gas
(m ³ ) steam
(kg) CO2
(kg)
The method of the present invention 6,667 186.7 67.4 880 480
Dip process 24,000 258.2 67.4 1161 720

As shown in Table 1, when the snow white process according to the present invention is applied, the process is drastically shortened compared with the existing sinking process, thereby reducing the water content by about 72%, electricity by about 27.6%, steam by about 24% Shortening effect.

On the other hand, Cotton 30'S single fabric was processed by the conventional dyeing process by applying the snow white method of the knitted cellulose fiber of the present invention, and the whiteness, shrinkage and breaking strength were compared and analyzed. The results are shown in Table 2 below.

Treatment process Whiteness
(CIE Whiteness) Contraction ratio
(%) Burst strength
(kPa) The method of the present invention 155.5 -8.7, Width -0.2 871 Dip process 158.4 Chapter -4.8, width -2.1 849

As a result of the above Table 2, the difference in whiteness of the knitted cellulose fibers processed according to the snow white method according to the present invention was not different from that of the conventional wet-dyeing process, and the deterioration of the physical properties due to the damage of the fabric during the progress of dyeing and pre- I could confirm that it was small.

In Table 2, the respective physical properties are measured as follows.

1) Whiteness: CIE Whiteness

2) Shrinkage: AATCC Test Method 135-2010, 27 ° C

3) Rupture strength: KS K ISO 13937 -1: 2011 Hydraulic Act

Claims (5)

Preparing a knitted cellulose fiber and transferring the fiber to a nip type CPB fader using a transfer roller;
A working solution and a sodium hydroxide (NaOH) solution containing a scouring agent, a penetrating agent, a hydrogen peroxide solution, a peroxide stabilizer, a metal ion sequestrant and a white dye were each prepared, and the above working solution and sodium hydroxide solution To a CPB fader in a 4: 1 liquid ratio to paddle the fibers;
A step of aging the fibers after the padded fibers are wound using a CPB roller and aging for 2 to 24 hours;
The fibers having been subjected to the aging step are transferred to a steaming bath to supply the saturated steam having a moisture content of 10% or more in the steam at a temperature of 80-105 ° C inside the steamer and steaming for 6-15 minutes Steam process;
A water washing step of successively transferring the fabric finished with the steam process to a plurality of water treatment tanks successively configured to continuously wash the water; And
And a tentering step of drying the fibers having been subjected to the water washing step at a temperature of 140 to 180 ° C at a speed of 20 to 50 m / min in a tenter machine.
The continuous water washing process of the washing process is performed by transferring the fibers to the first water bath and washing the water at a temperature of 98 to 100 ° C for 20 to 30 seconds, And the water is treated at a temperature of 55 to 65 ° C for 20 to 30 seconds. The fabric washed with water in the second water tank is transferred to the third water tank and is subjected to washing treatment at a temperature of 25 to 35 ° C ,
10 to 30 parts by weight of a scouring agent, 1 to 5 parts by weight of a penetrating agent, 10 to 60 parts by weight of hydrogen peroxide, 5 to 20 parts by weight of a hydrous stabilizer, 5 to 10 parts by weight of a metal ion blocking agent, 0.1 And 3 parts by weight of the above components, wherein each of the components is mixed with 10 to 30 g / L of a scouring agent, 1 to 5 g / L of a penetrant, 10 to 60 g / L of hydrogen peroxide, 5 to 20 g / 5 to 10 g / L of a metal ion sequestering agent and 0.1 to 3 g / L of a white dye in an aqueous solution, and mixing them so as to satisfy a weight ratio of constituent components of the above- Stabilizer: metal ion blocking agent: white dye in a ratio of 20: 2: 40:
10: 10: 2 by weight,
Wherein the sodium hydroxide solution is a sodium hydroxide aqueous solution of 5 to 10 g / L. delete delete delete The method according to claim 1,
Wherein the total amount of the salt solution mixed with the working solution and the sodium hydroxide solution supplied to the CPB faders is adjusted to 10 L or less.

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