KR100785827B1 - Bio-towel using enzyme scouring and manufacturing method thereof - Google Patents

Abstract

An eco-friendly towel using enzyme scouring and a manufacturing method for the same are provided to cause little damage of fiber when compared with existing alkali scouring and to minimize decrease of a weight. A manufacturing method of a bio-towel using enzyme scouring includes the steps of: preparing a textile by weaving a natural color cotton; scouring the textile for 20 to 30 minutes at 80 to 90 deg.C by injecting 0.3-1.5%(o.w.f.) of pectinase as enzyme and 1.1~2.0g/L of surfactant; and dehydrating, drying and then sewing the textile after scouring to obtain an eco-friendly towel. The scouring is performed at 60deg.C for 30 minutes and then the temperature is raised up to 95deg.C. After-treatment is performed for 5 minutes.

Description

Eco-friendly towel using enzyme refining and its manufacturing method {Bio-Towel Using Enzyme Scouring And Manufacturing Method Thereof}

1 is a graph comparing the absorption of enzyme refining and alkali refining, hot water and surfactant refining according to the present invention.

Figure 2 is a surface electron micrograph of the cotton yarn for the results of Examples and Comparative Examples of the present invention

Figure 3 is a peeling test photograph of the results of the Examples and Comparative Examples of the present invention

The present invention relates to an environment-friendly towel using an enzyme refining process for refining color cotton by an environmentally friendly method, and a method for manufacturing the same, preparing a fabric by weaving natural color cotton, and refining the fabric using an enzyme. And it is characterized by consisting of a step of dehydration drying after sewing.

Eco-friendly towel using the enzyme refining of the present invention by using enzyme refining instead of the conventional alkali refining, there is no damage to the fiber and less weight than conventional alkali refining, excellent flexibility while reducing the processing time and use As well as saving water, the reaction time is short, which saves energy and reduces waste water.

Towels, commonly referred to as towels, are used to wipe moisture and sweat from the face and body, and are finished through the steps of weaving, firing, refining, dyeing, and softening using naturally colored cotton. .

Since the natural color cotton has a natural color, it is possible to produce a beautiful color textile product without dyeing.

However, since cotton is naturally covered with a wax component, the wax component must be removed by refining in order to exhibit absorbency, which is inherent in cotton.

Cotton that corresponds to natural fibers contains natural primary impurities and secondary impurities that are imparted in processes such as winding, canon, gaho, barrel, frame, weaving, and the like.

The components of the primary impurity can be removed only by washing with water, but the secondary impurity needs to be removed because it contains a gradient protective agent, a weaving oil and other dust, and machine oil.

The process of removing these impurities is called scouring. Since most of the defects in dyeing and processing are caused by the refining process, the refining process is required as shortening or sequential processing time and process are required to improve productivity. It needs to be more meaningful.

A refining agent, which is a drug necessary to remove impurities such as oils, waxes, and oils, removes impurities in fibers by physical or chemical action such as wetting, penetrating, emulsifying, dispersing, foaming, and washing.

However, the above refining agent usually has to be used in combination of two or more, but it is necessary to select and use a suitable refining agent for each fiber because the impurity must be emulsified, dispersed and dissolved to remove the fiber.

For example, an alkaline inorganic scouring agent is used for fibrous fibers, and an organic scouring agent such as a surfactant or a solvent is used for protein fibers. In the subsequent washing process, impurities must be sufficiently removed, and the superiority of the washing process influences the pretreatment effect. do.

The refining includes hot water, surfactants, alkali refining, and the like, which is mainly used for refining cotton fiber, uses high concentration (about 98%) of sodium hydroxide, a penetrating agent, a humectant, a metal ion blocking agent, etc. After washing the fabric several times with strong acid (acetic acid) to neutralize the pH of the fabric, a large amount of water is required, which generates a large amount of waste water.

In addition, the alkali refining may cause significant damage to the cotton fiber itself while removing impurities, which may cause the fabric to be touched and reduce the weight, thereby requiring improvement of the refining process.

Therefore, the present invention has been made in view of this point, and compared to the conventional alkali refining, there is no damage to the fiber and less weight, excellent flexibility, shortening the treatment time and use water, as well as short reaction time energy To provide an eco-friendly towel through a new refining process that will save energy and reduce waste water.

The present invention for the above object is characterized by consisting of a step of preparing a fabric by weaving a natural color cotton, the step of refining the fabric using an enzyme and the step of dehydration drying after sewing.

Here, as the enzyme used in the present invention, lipase, cellulase, pectinase, xylan, etc. may be used alone or in combination, but pectinase is particularly preferable.

As the pectinase, it is preferable to use an alkaline pectinase rather than an acid because not only a large amount of enzyme is required for refining, but it is more efficient to treat in an alkali than an acid due to the nature of cotton.

In the present invention, it is expected to be possible even in weak alkali by obtaining the result that the absorbency in the step of refining using the enzyme is not significantly affected by the pH of the reaction solution, but it is preferable to make the pH neutral to reduce the alkaline wastewater.

In addition, with respect to the refining temperature, there is a difference depending on the pH of the reaction solution, but the refining at a temperature of 60 ~ 95 ℃, preferably 80 ~ 90 ℃ is good, which is insufficient if the temperature is 80 ℃ or less, This is because when the temperature becomes 90 ° C or higher, the fibers yellow and a decrease in strength of the degree of polymerization occurs.

In addition, the refining time is proportional to the absorbency of the towel paper, but 20 minutes or more, preferably 20 to 30 minutes is preferable, if the treatment is less than 20 minutes, impurities are not sufficiently removed, 30 minutes or more of the absorbency and towel paper This is because it feels poor.

It was confirmed that the weight loss increases as the concentration of the enzyme increases, the range is 0.3 ~ 1.5% (owf) is preferred, if less than 0.3% (owf) enzyme refinement is insufficient to remove impurities is not enough, 1.5 If it is more than% (owf), enzyme refining is excessive and fiber breakage occurs.

On the other hand, in the present invention, it is preferable to add a surfactant together with the enzyme, but the surfactant can be used as long as it is compatible with the enzyme, and the amount of the surfactant is preferably 1.1 to 2.0 g / L. This is because when the amount is less than 1.1 g / l, the removal of impurities is insufficient, and when the amount is more than 2.0 g / l, fiber breakage occurs.

Hereinafter, the configuration of the present invention through examples and comparative examples in more detail.

Example 1

A jacquard loom was used to blend brown and green natural color cotton with cream color, a normal organic cotton, respectively, to prepare a towel type fabric.

The fabric was refined with enzyme, but the bath ratio was 1:20, and the reaction was first performed at 60 ° C. for 30 minutes, heated to 95 ° C., and after 5 minutes, washed with water.

1 g / L of surfactant (product name: DGA W-15, Dong-A Emulsifier) that is compatible with the enzyme using alkaline pectinase (trade name: Scouzyme L, product of Novo Korea) 1.0% (owf) Was used.

After the above-mentioned refining, dehydration drying and sewing were carried out by the usual method, and the desired eco-friendly towel of the present invention was obtained.

Comparative Example 1

Example 1 was the same as in Example 1, except that the enzyme and the alkali were refined. However, 1 g / L of surfactant and 2 g / L of NaOH (for 98% reagent) were used for scouring at 95 ° C. for 45 minutes.

Experimental Example

The weight loss rate, absorbency, color change, color fastness and peeling were tested for each of the refined samples in Example 1 and Comparative Example 1.

1. Weight loss rate

The weight loss rate for each sample in Example 1 and Comparative Example 1 is shown in Table 1 below.

Brown Reduction rate (%) Green Reduction rate (%) Total loss rate (%) Before treatment After treatment Before treatment After treatment Example 1 11.719 11.174 4.651 10.350 9.885 4.493 4.59 9.353 8.916 4.672 9.815 9.370 4.534 Comparative Example 1 10.770 10.148 5.775 11.214 10.618 5.315 5.53 10.593 9.984 5.749 10.845 10.271 5.293

As confirmed in Table 1, the sample (Example 1) by enzyme refining of the present invention showed a lower weight loss than Comparative Example 1 (alkali refining).

2. Absorbent

1 shows a graph of absorbency comparison for enzyme refining (Example 1) and alkali refining (Comparative Example 1) of the present invention and normal hydrothermal and surfactant refining.

As shown in the figure, the enzyme refining of the present invention exhibits high water absorption (g-g) in a short time, and thus it is understood that the enzyme refining is superior to alkali refining, hot water, and surfactant refining.

3. Color change

In order to determine the color change by refining, the K / S value was measured by using a color eye (Color-Eye). When the exclusion of the present invention increased the whiteness, the enzyme refining of the present invention had little or no change. Rather, it tended to be slightly darker.

4. Color fastness

The fastness test proceeded with the test of daylight, washing and friction fastness.

Daylight fastness was tested by exposure to xenon arc lamp for 40 hours according to ISO 105-B02: 1994 standard using Weather-O-Meter, and laundry fastness was tested according to ISO 105-C01: 1989 standard. O-Meter) was used for 30 minutes at 40 ° C., and the fastness of friction was measured by the Crock Meter according to the ISO 105X12: 2001 standard.

The results of daylight fastness are shown in Table 2 below.

Example 1 Comparative Example 1 Untreated Hydrothermal Surfactants Brown 6 6 6 6 6 Green 5 4 6 6 4

As can be seen in Table 2, in the case of enzyme refining of the present invention it can be seen that the daylight fastness is maintained at a relatively high daylight fastness of 5-6 grades.

In addition, the wash fastness is a measure of the degree of staining of the dye is changed to the original color or contaminated by other fabrics by washing, as a result of measuring the wash fastness for each sample, the color of the enzyme refining of the present invention (brown, Green) showed excellent washing fastness of grades 5-6.

On the other hand, the friction fastness was used a test method for the vertical rotational friction of dry and wet conditions, and in the case of the enzyme refining of the present invention, all showed a relatively good level of friction fastness regardless of the color.

5. Peeling

Refining in the present invention can be said to be an environmentally friendly process by using an enzyme without using an alkali. In Example 1, pectinase was used as the enzyme.

The pectinase is an enzyme that decomposes pectin present between cotton and wax and does not damage cotton cellulose.

Figure 2 shows a surface electron micrograph (5000 times, SEM) of the cotton yarn for the results of Example 1 and Comparative Example 1 of the present invention.

In the figure, in the case of alkali refining, it can be seen that the surface is irregularly damaged, but in the case of enzyme refining of the present invention, it can be seen that the surface is uniform compared to alkali refining.

In addition, the filling (pilling box method) is tested according to the ISO 12945-1 standard and the results are shown in FIG. 3.

As shown in the figure, the alkali-refined sample is grade 3, but the enzyme-refined sample of the present invention is grade 4, it can be seen that the peeling property is improved than the conventional alkali refining.

As described above, according to the eco-friendly towel using the enzyme refining of the present invention and the manufacturing method thereof, there is no damage to the fiber and less weight, compared to the conventional alkali refining, excellent flexibility, while reducing the processing time and use water In addition to savings, the reaction time is short, saving energy and reducing waste water, which is environmentally friendly.

Claims (9)

Weaving natural color cotton to prepare a fabric; Refining the fabric with enzymes pectinase 0.3-1.5% (o.w.f.) and 1.1-2.0 g / L of surfactant for 20-30 minutes at 80-90 ° C .; And Method of producing an environmentally friendly towel using enzyme refining, characterized in that consisting of; delete delete delete delete delete delete delete Eco-friendly towel obtained by the manufacturing method of claim 1

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