KR20030033743A - Method for manufacturing of sectional burn-outfinishing yarn - Google Patents

Abstract

PURPOSE: A method of preparing a partially burnt out printed yarn is provided to make a high quality fibrous yarn through partially printing a chemical treatment agent on a fiber blend with fiber components differentiated in the anti-chemicals property such that only one fiber component is dissolved in the chemical treatment agent, and through heat-treating the fiber complex. CONSTITUTION: A fiber blend is made by mixing a polyester fiber with a cellulloid fiber containing triacetate. The fiber blend is partially printed with a burnt out printing material, which generates sulfuric acid when heated, an anti-acid thickening agent, an over-drying prevention agent, a desizing agent, an infiltration agent, and an anti-foaming agent. The printed fiber blend is heat-treated at 170-190 deg.C for 1-2 minutes. The burnt out printing material is selected from Al2(SO4), NaSHO, or Fe(SO4).

Description

Method for manufacturing of sectional burn-outfinishing yarn

The present invention relates to a method of manufacturing a partial erecting process, and a specific feature is to produce a partial erecting process by partially etching and heat treating a drug that dissolves only one fiber on the surface of a fiber combination having different chemical resistance. .

In recent years, the global apparel and textiles market is in oversupply.

Therefore, it is difficult to stimulate consumer's new purchase with general products, so each industry such as weaving, dyeing, sewing, etc., is starting to fashion.

Among them, Saga is closely related to the field of basic material development and plays an important role.

On the other hand, due to the expansion of textiles in Asian countries, the market situation is becoming very severe. Therefore, efforts to create added value by special processing and unmatched originality are required.

In this sense, as one of the special processing technologies that can maximize the added value, the development of the partial erosion processing method is considered to be one of the ways to escape the extreme material poverty in the textile industry.

Conventional corrosion processing is possible only in the state of the fabric, and the method of opulal processing is known as the method. Specifically, an example can be seen in acetate fabrics, and a long time ago, a paste containing soluble salts such as tungstic acid and molybdenum acid on cotton fabric And a white insoluble precipitate on the fabric by passing through a solution of magnesium, calcium, dyeing, etc.

There was a method of printing a mixture of protein solution as an adhesive using zinc oxide, titanium oxide, barium sulfate, etc., and further advanced method was adopted to use white pigment resin. There was also a method of obtaining a three-dimensional design by creating a partially transparent pattern by dissolving and dissolving one fiber by chemical reaction.

The present invention is applied to this to make a fiber binder by a combination of a popular fiber polyester fiber and other fibers to produce a high value-added fiber yarn by partial expression.

This will be described in more detail as follows.

1 is a small-volume production manufacturer for producing a partial erosion process of the present invention

Illustration

Figure 2 is a mass production of the erosion manufacturing machine for producing a partial erecting process of the present invention

It is an illustration of a manufacturing method.

* Explanation of symbols for main parts of the drawings

1: blood meal 2: container

3: roller 4,4a: heater

Erosion processing of the present invention is a mixture or a combination of fibers having different chemical resistance, after partially destroying a chemical that destroys only one fiber, and then dissolves, heat treatment or aging over a certain temperature (destructed by chemicals over time) It is a processing method that gives a partially transparent pattern by change. Therefore, it is possible to make practical use by selecting a drug that destroys and leaps out a specific fiber and develops a basic relationship according to a combination of representative fibers and drugs.

ㆍ Cellulose Plant Fiber (Cotton, Hemp, Rayon, etc.)-Acids

ㆍ Protein-based animal fiber (wool, silk, etc.)-alkalis

ㆍ Semi-synthetic fiber (acetate, etc.)-Acids, oxides (benzoyl peroxide)

However, since the most widely applied polyester fiber having excellent chemical resistance, it is a combination of cellulose-based fibers having weak chemical resistance, based on them. Next, triacetate or acetate is used for blending or knitting, alternating fabrics or knits. However, the high-end products are core yarn, corte, and whistsha. In addition, they do not stay in simple tissues or knits, but are often used for raising items and piles. This is summarized in <Table 1>.

<Table 1> Combination and Form of Fiber

Combination of fibers Form of yarn In the form of fabric or knit Polyester / cellulose polyester / triacetate or daacetate Blendcorecore discoretwist Blended, teaching brushed pile

Therefore, the main agent of the fiber to be broken by the drug is a cellulosic fiber in a broad sense including triacetate, and its decomposition mechanism will be described below.

It is well known that cellulose fibers are inherently sensitive to the action of acids and are easily hydrolyzed by strong acids. Cellulose fibers, a polymer material, have a degree of polymerization lowered by hydrolysis. As the reaction proceeds further, cellulose becomes a single molecule and is dissolved in water. In particular, when the moisture is very low, when heated under strong acidity, the water contained in the cellulose fiber molecules is eliminated to carbonize the fiber.

However, when the sulfuric acid concentration is more than 95%, sulfuric acid remains in an unsaturated state, so the hydration power is very strong and carbonization proceeds easily even at room temperature.

However, since it is very dangerous to put a large amount of concentrated sulfuric acid directly into the printing lake, as an alternative, a chemical which decomposes by heating to generate sulfuric acid is used. For the main drugs are various as shown in Table 2.

These inorganic acid generators do not generate free sulfuric acid in the ink blade, and their assets are decomposed by strong heating after drying the ink, resulting in concentrated sulfuric acid, and cellulose is easily decomposed to dissolve. The chemical reaction equation is

① 2HaHSO4-heating → NaSo ₄ + H ₂ SO ₄

② AI ₂ (SO ₄ ) ₃ + 2H2O-heating → AIOHSO ₄ + H ₂ SO ₄ ↔ 2AIOHSO ₄ + 2H ₂ O

Heating → AI (OH) ₃ + H ₂ SO ₄

<Table 2> Erosion Pharmaceuticals

Drug name Chemical formula Remarks Sodium sulfate NaSHO.H2O Solubility 28.6g / 100g (25 ℃) 100.0g / 100 (100 ℃) Aluminum sulfate AI2 (SO4) 3.16-18H2O Solubility 27.8g / 100g (25 ℃) 43.9g / 100g (100 ℃) Ferric sulfate Fe (SO4) 3.9H2O Pink, single crystal

Such chemical treatment enables processing having a high value-added special effect that is not obtained simply by direct printing or spouting. In addition, this method can be modified in various ways by various combinations as shown below, and future development is expected.

① After dyeing or printing, perform the etching process.

② After dyeing process, dye or print.

(3) Inject the frosting arc containing dyes for chemical-resistant textiles, and perform the so-called colored opal processing to give a transparent colored pattern on the fabric.

④ Invention Dyeing, dyeing, acid resistance and reducing resistance are carried out by the process of color development and dyeing.

⑤ Overprint the arc after entering the alkaline arc. In addition, coloring is also possible by adding a dye to the flame retardant.

* Erosion Processing Process

The main process of erosion processing is as follows.

end. Main Agents Used in Eating Process and Their Effects

Examples of basic drugs used in the erosion process are as follows.

ㆍ Eating Agent

ㆍ Acid resistance inhibitor

ㆍ Overdrying preventive and deodorant

Penetrant

Defoamer

(1) corrosion inhibitor

The erosion agent is the main agent of the erosion process, and the main ones are aluminum sulfate, sodium acid sulfate and ferric sulfate, and in the case of polyester / cotton or rayon, the effect of corrosion is ferric sulfate> acidic sodium sulfate> aluminum sulfate. Therefore, while the former two are effective for the purpose of erosion, when used in excess, not only yellowing the polyester fiber but also in the extreme case destroys the polyester fiber. Of course, this tendency varies depending on the thickness of the dough and the heating conditions, so it is not possible to say them collectively.

<Table 3> Corrosion Resistance Comparison of Various Eating Agents

<Evaluation>

◎: good corrosion resistance

○: slightly good corrosion resistance

△: poor corrosion resistance

×: yellowed polyester yellowing

*: Polyester is destroyed.

(2) Applied corrosion treatment

All of the aqueous solutions of the fermenting agents are acidic and have a lower acidity than sulfuric acid, but are very strong acids. Therefore, the application preparation requires acid resistance (acidity of 50 g / 1 (aqueous solution) is 3.3 for ferric sulfate and about 0.8 for ferric sulfate. to be)

Generally, natural rubbers have good acid resistance, but they may thicken or gel under strong acids, so the amount of the rubbers needs to be adjusted.

On the other hand, except for some examples, the synthetic inhibitors and the starch-based additives have low acid resistance, and the viscosity decreases significantly with the addition of an acid. From that sense, the cocast bin system is generally good, with etherification particularly preferred. In addition, the hydroxyketyl cellulose system is excellent in viscosity in the synthetic inhibitor system. In particular, the erosion process needs to be easily removed from the erosion part because the cellulose fiber is hydrolyzed and transmitted by an acid, and the solid content is low and the deprotection needs to be good.

One that requires attention in terms of viscosity is the change over time for strong acids. In this case, there are two main types of change over time. On the other hand, as gelation progresses and the titration of the edge is impossible, the viscosity decreases, and in extreme cases, it may splatter. Therefore, tests should be conducted in advance to select those that can avoid this situation.

(3) Other additives

In the process of erosion, the above-mentioned edibles and agents are the most important agents, but since they are not sufficient in actual processing, the anti-drying agents or penetrants that prevent overdrying and also promote de-protection also eliminate anti-foam bubbles that cause erosion stains. Will be needed. Since the dyes used for processing are complicated combinations of fibers, it is important to infiltrate the fertilizer evenly to short fibers, and it is important to keep in mind that this is different from general printing. There is a need for assisting penetrants to achieve that goal. However, it is necessary to select one that has a strong action of removing the decomposed carbide while having not only simple penetration but also emulsification.

In the actual processing, it is completely overdried in the drying process, and if it is treated with no moisture at all after the erosion treatment, it is often difficult to remove the decomposition products and carbides of cellulose. The reason for this is that excessive decomposition of cellulose is caused by the erosion treatment, and carbonization rapidly progresses, so that the cellulose becomes black and adheres firmly around the polyester. Therefore, it is good to emulsify it by adding a little draw top agent, for example, glycerides or PEG. Furthermore, if there are bubbles in the arc, it is difficult for the arc to attach uniformly to each short fiber, which causes corrosion stains. Therefore, an acid-resistant antifoaming agent is required to prevent this.

(4) Specific Example

In the above, the role of various drugs used in the erecting process is explained, but the amount of these drugs is determined according to the type of dough, the processing equipment, and the application method of the process.

Table 4 Example of Prescription

end. Erosion Processing (Heat Treatment)

Heating is carried out for erosion, but there are dry heat treatment and HT steaming. If you only require erosion, dry heat treatment is better for glyph and the effect of corrosion. Conditionally, depending on the thickness and texture of the dough, it is preferable that the corrosion of the polyester fiber in the range not yellowing is about 170-180 ° C / 1 minute.

However, in the case of polyester / triacetate, triacetate's corrosion resistance is very poor compared to cotton or rayon. So, ferric sulfate (100 g / kg), which is a strong corrosion agent, is used for 1-2 minutes at 190 ° C. It costs.

I. Etching Machine

For the effective implementation of the present invention, the machine of FIGS. 1 to 2 is used to enable efficient processing.

In other words, the erecting machine used in the practice of the present invention is partly stamped into the container (2) containing the sikyeoteul (1), a fiber combination, an anti-drying agent, an anti-drying agent and a defoamer, an antifoaming agent (2) The roller (3) is installed to pass the surface of the roller blade (3) for the partial blade, the combination of the fiber combination to insert the blade, and the portion of the blade passed through the heater (4) (4a) to complete the expression, winding In this process, the winding process is concentrated on a single machine to achieve effective erosion processing.

The present invention prepared as described above enables the production of a wide range of development products by applying the erosion process in the manufacturing process rather than the erosion process in the fabric processing process and the development of the present invention is applied to the method of erosion processing after dyeing or printing or after The so-called colored opal processing, which dyes or prints, or pastes the vinegar containing the fuel for chemical fiber, and at the same time produces a transparent colored pigment on the fabric, or it is an acid and reducing resistant color arc. It is possible to perform a variety of applications can be done by overprinting the evaporation arc after the alkalescent protection arc or by adding a dye to the flame retardant.

Claims (3)

Heterogeneous fiber combination with different chemical resistance (combination of vegetable fiber and synthetic fiber) is a drug that combines celluloid fiber of broad meaning including polyester fiber and triacetate to make fiber combination and generates sulfuric acid by heating Method of producing a partial erosion process characterized in that the heat-resistant at 170-190 ℃ for 1-2 minutes by partially in the fiber combination, such as acid-resistant inhibitors, anti-drying agent and defoamer, penetrant, antifoaming agent The method of producing a partial erosion process, characterized in that the corrosion agent in claim 1 is aluminum sulfate, sodium sulfate sulfuric acid, ferric sulfate The method of claim 1 wherein the heat treatment in the heat treatment method to dry heat processing method.