KR20020086837A - Simultaneous desizing and bio-scouring method using enzyme in one bath - Google Patents

Abstract

PURPOSE: A one-bath desizing and scouring method by enzyme is provided which is characterized by reducing a process time, water and energy in half, being economical, and reducing process cost for preparation. CONSTITUTION: The one-bath desizing and scouring method is as follows: mixing 1-2g/L of amylase type enzyme for desizing, 0.1-0.2g/L of pectinase type enzyme for scouring, 2g/L of deemulsifier and 2g/L of moistening agent to produce a processing solution; filling the one-bath with the processing solution, followed by throwing a textile into the bath; and then desizing and scouring on pH7-9 at 55-65deg.C of temperature in a bath ratio of 1:20 for 30-60minutes.

Description

SIMULTANEOUS DESIZING AND BIO-SCOURING METHOD USING ENZYME IN ONE BATH}

The present invention relates to a one-bath decanting method using an enzyme, and more particularly, in the decanting and refining of cotton or cotton blended fabrics, an enzyme for treating and an enzyme for refining are added by adding a deoiling agent and a wetting agent. The present invention relates to a single-bath refining method by enzymes, which is prepared by mixing and refining and refining in one bath to significantly reduce pretreatment time, water and energy.

In general, in order to improve the weaving efficiency in the weaving process, the fiber yarn is processed by various kinds of auxiliaries and lubricants, and after weaving, the wetting agents, lubricants and contaminants and foreign substances generated during weaving are washed with a water refining machine. Dehydration, decoction, and refining are performed to restore the fiber's original properties and feel. The preparation process consisting of decoction, refining, and bleaching is used to remove impurities from the fiber itself, emulsion during weaving and weaving. It is a process to increase the water absorption and whiteness of the fiber by removing it and to make the chemical composition uniform so that dyeing and processing can be performed uniformly under optimum conditions.

Today, with the development of fiber technology, the types of fiber yarns are diversified, the types of auxiliaries used according to the characteristics of the fiber yarns are varied, and the weaving technology is developed, and the types of woven fabrics are diversified, and the structure is also dense.

Due to this, the weaving fabrics have different levels of adjuvant, lubricant, and contamination, making the process of hair removal and refining more difficult.However, the method of washing and fabricating their fabrics is not improved. Only the use of various cleaners is increasing.

As a result, the consumption of water and thermal energy (steam) is increased in the process of decanting and the environmental pollution caused by the generation of a large amount of wastewater is increasing day by day, and the cost required for the decanting and refining of fabrics is increasing.

In particular, natural fibers contain a large amount of their own impurities, and therefore, an additive (10-15%), a spinning oil, a softening agent for knitting, and the like are added during the spinning, weaving, or knitting process and need to be thoroughly removed. Existing chemical refining and refining have not only weakened the fiber by damaging the fiber, but also have been a great burden for treating wastewater containing a large amount of alkali.

Therefore, recently, due to the rapid growth of biotechnology, the introduction of enzymes into the fiber processing field is actively progressed, and the callout by amylase has already been industrialized and is currently used. In addition, refining with pectinase has been actively conducted in recent years and is considered to be highly commercialized.

Currently, advanced countries are conducting R & D to simultaneously perform one or more of the pretreatment process and subsequent dyeing or processing in terms of productivity improvement through saving of processing time and materials. Is an example. The most important consideration in the simultaneous treatment is that the treatment effects must be the same as the effects of each treatment or have an effect that does not affect the next process.

Existing call and refining are performed separately by chemicals and some enzymes, and the time required for washing with water after each treatment, the amount of washing liquid, and a large amount of waste water by this washing liquid are burdening the enterprise.

Therefore, there has been a continuous demand for a pretreatment process that can reduce the amount of washing water and save processing time to improve productivity.

The present invention is to solve the above problems of the prior art, an object of the present invention is to provide a single-bath descaling method using an enzyme that can reduce the processing time, the water used and the amount of energy in half .

Another object of the present invention is to provide a single-bath decanting method by enzymes that can significantly reduce the required cost for the pretreatment process by operating the decanting and refining previously performed in one bath.

1 is a graph comparing the hygroscopicity of the fabric sample.

Figure 2 is a graph analyzing the effect on the refining of the arc or wax that was not removed during the process.

Figure 3 is a graph analyzing the effect on the refining when refining without removing the oil used when weaving the knitted fabric.

In order to achieve the object of the present invention, the one-bath decanting method by the enzyme according to the present invention is carried out in the decanting and refining process, which is a pretreatment step before dyeing, the decanting and refining in a single bath, but to perform the decanting and refining The treating solution is prepared by mixing 1 ~ 2g / L of amylase enzyme for desizing, 0.1 ~ 0.2g / L of refining pectinase enzyme, 2g / L of dehumidifying agent, and 2g / L of wetting agent. After filling in one bath and adding the fabric, it is called and refined for 30 to 60 minutes at a temperature of pH 7-9, bath ratio 1:20, 55-65 ° C.

Hereinafter, the one-bed bath refining method by the enzyme according to the present invention will be described in detail.

The main technical content of the present invention is a technology for treating inhomogeneous refining and refining, which is an essential pretreatment process for cotton or cotton blend fabrics, in one bath, by optimizing the conditions such as the amount of enzyme and enzyme used, temperature, pH, and time. It is a very economical and environmentally friendly treatment that can achieve the same effect as when the decanting and refining are performed separately.

In order to perform the decanting and refining in one bath, it is very important to prepare and mix the degrading enzyme and the refining enzyme optimally, and under what conditions the decanting and refining are performed. The main features of the components and the mixing ratio and the performance of the firing and refining, the components, the mixing ratio and the performance conditions are as follows.

First, before performing the decantation and refining in a bath, a treatment solution for the same must be prepared. The degrading amylase enzyme 1 to 2 g / L, the refining pectinase enzyme 0.1 to 0.2 g / L, and the degreasing agent 2 g / L and 2 g / L of wetting agent are mixed to prepare a treatment solution. At this time, it is preferable that NOVO Termamyl is used as the amylase-based enzyme for treatment, and Bioprep 3000L manufactured by the same company is used as the pectinase-based enzyme for refining treatment.

In addition, the treatment solution is filled in a bath and the fabric is added, followed by a decanting and refining treatment at a temperature of pH 7-9, bath ratio 1:20, 55-65 ° C. for 30-60 minutes.

Hereinafter, the effects of the examples according to the present invention and various comparative examples will be compared.

Before describing the Examples and Comparative Examples, the fabric samples, enzymes and drugs were first described, and the fabric samples were 100% cotton fabric A (20Ne, combed yarn, 108x58, twill weaved), 100% cotton fabric B (40Ne, combed). yarn, plain weaved), 100% cotton (40Ne, single jersey) was used. NOVO Termamyl was used as the enzyme for treatment and Bioprep 3000L was used as the enzyme for refining treatment. The additives used were Saccharol-HL and Wetting Agent (DA-W15).

<Example>

Enzyme solution of single bath decoction / refining method is Termamyl 1g / L, a degrading enzyme from NOVO, Bioprep 0.1g / L, a refining enzyme, Scourrol-HL 2g / L, wetting agent (DA -W15) 2g / L was prepared by mixing, the enzyme solution was filled in one bath and the fabric samples were added, and then treated at a temperature of 1:20, pH 7, 60 ℃ for 1 hour. At this time, the experimental results for the absorbency and dyeability of the fabric is shown in various ways in the following table and the accompanying drawings.

Comparative Example

The fabric was immersed in a solution prepared with 1 g / L of determinant enzyme Termamyl, 2 g / L of dehumidifying agent and 2 g / L of wetting agent, and treated at 95 ° C. for 20 minutes at pH 7, bath ratio 1:20. Thereafter, the finished fabric was tested by adding 0.1 g / L of the enzyme Bioprep 3000L for refining treatment, and the reaction temperature was tested at 60 ° C. The concentration of the humectant used was 1 g / L, pH 8.7, and treated at a bath ratio of 1:20 for 1 hour.

In order to compare the effects of the above examples and comparative examples, the absorbency was measured by actual dyeing and absorption length test (Wicking Length Test: WLT).

(1) Dyeing: In order to confirm the treatment effect of the firing and refined fabrics, the treated fabrics were dyed and compared with the values of K / S. The salt solution was prepared with a direct dye (Solophenyl Red 3BL, Solophenyl Blue 4GL, Solophenyl Yellow L: concentration 2% owf), NaOH 20g / L, and stained at 95 ⁰ C for 30 minutes.

(2) Wicking Length Test (WLT): WLT was performed by another verification method. Fabrics and treated fabrics were prepared in a size of 2.54x20.32 cm, fixed vertically, and then contacted with a 1% direct dye solution to measure the distance the dye solution penetrated and the water rose for 5 minutes.

1 is a graph comparing the hygroscopicity of the fabric sample. Referring to FIG. 1, 1 is a fabric sample B, 1 is treated before (Greige), 2 is a amylase enzyme called at 95 ℃, and 3 is a comparison of the hygroscopicity after refining using NaOH using WLT The fabric samples absorbed little water before treatment, slightly increased hygroscopicity after decay, and further increased after scouring. The figure shows that the rise in water is slightly larger than the rise in salt solution. Therefore, it can be seen how important the pretreatment process of decanting and refining before dyeing the fabric.

Figure 2 is a graph analyzing the effect on the refining of the arc or wax not removed in the process of the process, the wax used in the weaving of the remaining arc or knitted fabric that is not removed in the process of the process of the fabric has a significant effect on the subsequent process of refining It appeared to be mad. On the graph, 1 is the absorbency of a fabric called with amylase at 95 ° C. and refined with Bioprep enzyme, and 2 is a result of a fabric called with amylase at 95 ° C. and refined with Bioprep and lipase enzyme. absorbent, 3 Lake at a temperature of 65 ℃ by amylase and hydrogen peroxide (H ₂ O ₂₎ and water absorption of the fabric to scouring by Bioprep enzyme, 4 is at a temperature of 65 ℃ by amylase and hydrogen peroxide (H ₂ O ₂₎ Absorbency of the fabric, which was called and refined with Bioprep and lipase enzyme, 5 indicates the absorbency of the fabric, which was called with amylase and hydrogen peroxide (H ₂ O ₂ ) at a temperature of 65 ° C. and refined with NaOH.

As can be seen in Figure 2, the addition of hydrogen peroxide during the decanting process completely removes the arc and the hygroscopicity of the refined sample can be seen that much increased than the decanted and refined using only amylase.

Figure 3 is a graph analyzing the effect on the refining when the refining without removing the oil used when weaving the knitted fabric, it can be seen that the refining is not properly when the oil is not removed before refining. In the graph, 1 is the absorptivity of the fabric refined using Bioprep enzyme without oil removal, 2 is the absorbency of the fabric refined using Bioprep and lipase enzyme without oil removal, and 3 is the oil Absorbency of fabrics removed and refined using Bioprep enzyme, 4 is oil absorbed, absorbency of fabrics refined using Bioprep and lipase enzyme, 5 is oil removed and refined using NaOH It shows the absorbency of the fabric. This can be easily seen that the remaining oil to interfere with the penetration of the refining agent is not efficient refining, and the hygroscopicity of the sample was greatly increased when refining after removing the oil using a deoiling agent.

In conclusion, through experiments with the Examples and Comparative Examples according to the present invention by the dyeing and WLT method, the experiments of depilation by one bath and depilation by bathing, various experiments showed almost the same effect. Therefore, the present invention can significantly reduce the treatment time or the amount of water used while showing the same effect, and also the amount of energy, which is a breakthrough technical content that can be achieved in the pretreatment process before dyeing.

As mentioned above, according to the one-bath decanting method by the enzyme of the present invention, while reducing the processing time, water and energy used in performing the decanting and refining in half, It's a very economical and environmentally friendly treatment that works just as well.

On the other hand, while the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention described in the claims below It will be understood that modifications and changes can be made.

Claims (1)

In deburring and refining which is a pretreatment step before dyeing, To perform the decantation and refining in one bath, the treatment solution for performing decantation and refining is 1 ~ 2g / L amylase-based enzyme for treating, 0.1 ~ 0.2g / L for refining treatment, 2g / deoiling agent L and 2g / L of a humectant are mixed and prepared, and the treatment solution is filled in one bath and the fabric is added, followed by a temperature of pH 7-9, bath ratio 1:20, 55-65 ° C. for 30-60 minutes, and Single bath decanting method by enzyme, characterized in that the refining treatment.