KR19990021158A - Silk refining and dyeing method - Google Patents

Abstract

The present invention relates to a method for refining and dyeing cheese for silk, wherein the silk is wound on a cheese cylinder at a coiling density of 0.25-0.40 g / cm 3 and a coiling angle of 60-90 ° C. to a temperature of 110-130 ° C. and a temperature of 2-4 g / cm 3. 20-40 minutes under pressure, washing with water, and washing the silk with the addition of acid dyes, metal-containing dyes or reactive dyes and dyeing aids in the range of 20-105 ° C. It relates to a dyeing method of silk, characterized in that the dyeing for 30 minutes-90 minutes.

Description

Cheese refining and dyeing method of silk thread

The present invention relates to a method of cheese refining and dyeing of silk yarn, and more particularly, to a method of refining silk yarn using a cheese dyeing machine and a method of increasing and processing the refined silk yarn.

Raw silk is a so-called bi-structure fiber composed of fibroin (fibrion), which is about 75% of the total weight, and sericin (silk glue), which is about 25%, and fibroin is microfibrils and fibrils in terms of microstructure. It has a higher order structure composed of steps of).

Fibroin, a poorly soluble fibrous protein, acts as a fiber, and sericin, a soluble non-fibrous protein, protects internal fibroin and focuses each fiber. Raw silk with sericin, which is a protein that is relatively soluble in water, remains intact and rough.It is used a lot in summer materials or for roads, and refiners with sericin (fibroin) have excellent gloss and soft touch. Therefore, it is mainly used for tie, scarf, and dress paper.

Degumming refers to a process of removing the secondary impurities attached to the fiber during handling, such as the primary impurities already contained in the fiber production process such as fats and oils, pigments, etc. However, refining in silk has a completely different meaning from refining other fibers. The main purpose is to remove impurities, as well as sericin, which accounts for about 25% of the total, to express an elegant luster and soft touch.

In order to remove sericin in a short time, a weak alkaline solution mainly composed of soap and alkali is used for refining.If the refining is insufficient, the superior properties of silk are not expressed. Permanent defects such as wool phenomenon and dyed hair appear due to damage, so the quality of refinement has a direct effect on the quality of the silk.

Currently, skein refining dyeing using a hank dyeing machine (HANK DYEING MACHNINE) is used for refining and dyeing silk yarn.

Tarantine refining dyeing method has the advantage of easy operation and visual confirmation of the chlorine from time to time during the operation, but the quality of the refined dyeing yarn is poor because the thread is easy to be distracted due to water spray and the quantity of wool is poor. It is not suitable for manufacturing the product, and in case of poor water permeability, such as lecture yarn, there is a disadvantage in that refining efficiency is lowered.

In addition, cheese refining dyeing is a general dyeing technique in the fields of cotton, wool and chemical fiber, but it is not yet used in silk yarn, which is about 25% of the weight of sericin by silk refining. As the impurities are eluted and the volume is reduced, not only the collapse of the four layers of cheese and uneven refining are caused, but also the unwinding of the yarn is poor and the dyeing is not easy to be used.

Grafting of silk is a copolymer of a heterogeneous polymer in a silk yarn, which is a homopolymer, and increases the amount of increased volume in a range that does not impair the inherent properties of the silk. A study on the increase processing of silk has been attempted since the 1960s, but there is a problem that salt spots occur due to difficulty in uniform polymerization.

Accordingly, an object of the present invention is to solve the above problems, and to provide a method of preventing the occurrence of fur and producing a high-quality silk product by refining and dyeing the silk in a wound state in a cheese cylinder.

It is another object of the present invention to provide a method for refining silk cheese that can reduce costs and shorten the process.

Still another object of the present invention is to provide a method for increasing silk thread, which can perform uniform graft without generating salt.

The inventors of the present invention, in order to achieve the above object, as a result of winding the silk to the cheese at a suitable density, and after mounting the cheese dyeing machine, put the appropriate amount of water and a small amount of preparation, titration according to the degree of twist of the silk at high temperature and high pressure Cheese refining methods have been invented to remove the sericin and other impurities of silk by time refining. Cheese dyeing refers to dyeing by adding dyes (acidic, metal-containing, reactive) using a wound cheese and adding a small amount of dyeing aids.

According to the present invention, the silk is wound at a coiling density of 0.25-0.40 g / cm 3 and a coiling angle of 60-90 ° C. for 20-40 minutes at a temperature of 110-130 ° C. and a pressure of 2-4 g / cm 3, followed by washing with water. A method of refining silk, characterized in that the dyeing of the silk refined by the method and dyeing for 30 minutes to 90 minutes in the range of 20-105 ℃ by adding acid dyes, metal-containing dyes or reactive dyes and dyeing aids It relates to a method of dyeing silk.

In addition, the present invention provides a polymerization bath composed of a graft polymerization monomer and a polymerization initiator comprising the graft polymerization monomer and the polymerization initiator in an amount of 10% by weight or less with respect to the polymerization monomer. In addition to the silk in an amount of 3-30, the present invention relates to a method for increasing silk thread, characterized in that the treatment is performed at pH 3.8-4.3, 25-85 ° C. for 1 hour.

This will be described in detail as follows.

First, the raw yarn must be wound in a cheese state. Depending on the number of yarns and the number of years, the winding tension is adjusted so that 2-12 g of the winding density is 0.3-0.4 g / cm 3 and the winding angle is about 60-90 °.

When the silk is wound on the cheese, the winding density increases as the winding tension increases.

However, if the coiling density is too high, the amount of thread that can be wound on the cheese increases, but it is not easy to penetrate into the water at the beginning of the refining, which makes the refining uneven and the refining time long, and the weight and volume after refining Four layers are likely to collapse.

The wound cheese is mounted in a cheese dyeing machine, filled with water, sealed and heated to a temperature of 120-130 ° C. at a high pressure of 2-4 g / cm 3 for 20-40 minutes to be refined.

If the temperature and pressure is lower than the above temperature and pressure range, refining does not occur efficiently. If the temperature or pressure is higher than the temperature or pressure range, refining is better but damage of fibers occurs.

In the conventional refining, soap and alkali are used, but in the present invention, the refining may be performed without using any of them. However, a swelling agent may be used to reduce reattachment of the eluted sericin by using a small amount of surfactant or to increase refining efficiency. It can also be used. In addition, by appropriately adjusting the refining time can be adjusted in the range of 5 to 25% of the deterioration rate, in particular, since the sericin in and out of the fiber can be effectively removed through high temperature and high pressure refining, the refining method of the skein by the spray tuft dyeing machine A speaker who is difficult to do can also be completely refined.

Refined cheese is washed with hot water and cold water sufficiently to be dried or dyed, mainly dyeing in the range of 20-105 ℃ using acid dyes, metal dyes, reactive dyes.

The graft polymerization monomer to be used for the increase processing of silk is preferably selected from the group consisting of glycidyl methacrylate, methacrylate, methacrylamide and styrene.

As the polymerization initiator, hydrogen peroxide, ammonium persulfate or potassium persulfate is used.

The polymerization initiator is added in an amount of 10% by weight or less, preferably 0.1 to 10% by weight based on the amount of the monomer. If it is added in an amount of 0.1% by weight or less, if graft polymerization does not occur rapidly, no synergistic effect is observed even when added in an amount of 10% by weight or more.

Depending on the type of monomer, an emulsifier such as sodium lauryl sulfate may be added.

The pH of the polymer is adjusted using sulfuric acid and buffer.

Example 1

After 1,100 and 1540 kinds of raw silk 1kg cheese dyeing machine, the cheese was wound with 12g tension and winding density 0.4g / cm3, and then 3g of surfactant was added to 30kg of water to change the temperature and pressure as shown in Table 1 below. The refinement was carried out while letting it go. The annual reduction obtained at that time is shown in Table 1 below.

In addition, the Laussiness results of the refined fibers were measured and listed in Table 2.

Table 1. Refinement conditions and annual reduction rate

Table 1 shows the results of investigating the annual reduction rate by refining silk yarn according to Example 1, and the higher the reduction temperature is, the better the refining is.

At 110 ℃, the annual deterioration rate was very low, while at 130 ℃, the annual deduction rate could be obtained by only 20 minutes of treatment, and the deterioration rate was slightly lower as the year increased (more twisted). Therefore, it is preferable to refine 20-30 minutes at a temperature of 120-130 ° C, but when the year increases, the refining time should be extended by about 10 minutes.

Table 2. Refining Conditions and Routine Performance

Table 2 shows the results of the Lausiness test to determine the degree of damage to the silks according to the refinement conditions.The Laussian Performance is a result of evaluating the various defects such as the cattle occurring on the surface of the silks due to various external factors such as dyeing and processing. Say dye stains. Currently, the highest quality raw silk used mainly is 4A grade, and the lazyness grade of 4A grade silk is regulated to 85 or more, so the cheese refiner by high temperature and high pressure is evaluated as not damaging the surface at all.

Example 2

The fiber refined by Example 1 was dyed with the reactive dyes Lanasol Black B, Yellow 4G, Brown H-EXL, Red 5B (CGY), and then measured by the light fastness, wash fastness, friction fastness, sweat fastness and water fastness. It is shown in Table 3.

Table 3. Dyeing Fastness Measurement Results

As can be seen from the results of Table 3, the dyeing fastness of the cheese refiner dyed yarn was found to be very excellent.

Example 3

The fiber refined in Example 1 was graft polymerized with 30% OWF methacrylamide and potassium persulfate 3% OWF. The pH of the polymerization bath was adjusted to 3.8 by adding sulfuric acid, polymerization was carried out at 25 ° C. for 3 minutes, polymerization was carried out while increasing the temperature to 85 ° C. over 45 minutes, and graft polymerization was further performed at 85 ° C. for 12 minutes. .

After the increase processing, the increase processing efficiency was 95%.

Soaping was performed at 95 DEG C for 30 minutes with 15% OWF soap and 10% OWF sodium.

In the present invention, the cheese refining dyeing method is a refining dyeing method using a cheese dyeing machine (CHEESE DYEING MACHINE), the operation is somewhat more difficult than the refining dyeing method, but the quality of refining dyeing yarn is excellent, and low bath cost refining dyeing is possible, thus reducing the cost. In addition, process shortening, productivity improvement, preparation reduction, permeability improvement, deepening, and the like can be achieved.

Claims (5)

The silk is wound on a cheese at a coiling density of 0.25-0.40 g / cm 3 and a coiling angle of 60-90 °, treated for 20-40 minutes at a temperature of 110-130 ° C. and a pressure of 2-4 g / cm 3, followed by washing with water. Refining method of silk The silk yarn dyed by the method of claim 1 is added with an acidic dye, a metal-containing dye or a reactive dye, and a dyeing aid and dyed for 30 minutes to 90 minutes in the range of 20-105 ° C. The ratio of the ratio of the ratio of the silk yarn to the polymerization bath 1: 3-30 in the polymerization bath consisting of the graft polymerization monomer and the polymerization initiator containing the amount of the silk refined by the method of claim 1 in an amount of 10% by weight or less relative to the polymerization monomer. In addition to the silk, pH 3.8-4.2, 25-85 ° C for 1 hour treatment characterized in that the increased processing of silk. 4. The method of claim 3, wherein the graft polymer monomer is selected from the group consisting of glycidyl methacrylate, methacrylate, methacrylamide and styrene. The method of claim 3 wherein the polymerization initiator is at least one compound selected from the group consisting of hydrogen peroxide, ammonium persulfate and potassium persulfate.