KR20210086885A - Manufacturing method of natural resin coating composition for textile - Google Patents

Abstract

The present invention relates to a method for manufacturing a natural resin coating composition for fabric, which comprises the following steps: mixing 30 to 60 parts by weight of casein glue to 30 to 60 parts by weight of fermented persimmon water and stirring the mixture for 120 minutes and adding 0.1 parts by weight of an antifoaming agent with respect to the weight of the mixture to performing stabilization for 24 hours, thereby forming a first agent; dissolving water-soluble chitosan in purified water, adding sodium alginate to the mixture, and heating the mixture in a bath to form a second agent; and mixing and stirring the first agent and the second agent, adding linseed oil, ethanol, a preservative, and an auxiliary additive, and stirring the mixture to obtain a natural resin coating composition. According to the present invention, the natural resin coating composition can provide fabric with functions such as gloss, flexibility, and the like and can minimize harmful effects of conventional chemical coatings.

Description

Manufacturing method of natural resin coating composition for textiles {MANUFACTURING METHOD OF NATURAL RESIN COATING COMPOSITION FOR TEXTILE}

The present invention relates to a method for manufacturing a natural resin coating composition for fibers, and more particularly, by using natural materials such as persimmon juice and casein and other natural auxiliary materials to impart functions such as gloss and flexibility to fibers and It relates to a technology for manufacturing a coating agent that minimizes the harm caused by the component coating agent.

In general, in the manufacturing process of the fiber, it is subjected to a processing process for imparting various functionalities to the fiber. In particular, the coating process for imparting texture such as gloss or flexibility according to the type or use of the fiber is widely used because it improves the physical properties of the fiber as well as the appearance of the fiber by forming a film using a coating agent on the surface of the fiber.

There are two main methods for coating the fibers: a dry method and a wet method. The dry method is a coating method in which an organic solvent, water-soluble resin, or dispersant is applied to the fiber and then vaporized to solidify. The wet method is a coating method in which a hydrophilic alcohol or organic solvent is applied to the fiber and immersed in water to dissolve the solvent to solidify the resin.

For example, the previously known Korean Patent Application Laid-Open No. 10-2003-0034103 discloses a step of mixing together a set of components including a volatile solvent, a polymer material, and an activator to form a first mixture, and forming a base fiber in the first forming a coating mixture by coating with a mixture of: heating the coating mixture to form an activated organic coating on the fibrous substrate, wherein the volatile solvent is water, alcohol, dimethylformamide, dimethyl sulfoxide, ether , ketones, aldehydes and mixtures thereof, and the coating mixture is phenolic resin, polyvinyl alcohol, polyacrylonitrile, cellulose, polystyrene, polypropylene, polyvinyl chloride, polymethacrylate, polymethacrylic acid, A fiber coating method comprising a polymeric material selected from the group consisting of copolymers and mixtures thereof constitutes.

As such, the organic solvent used for coating the fiber contains a large amount of harmful ingredients such as methyl ethyl ketone, dimethylformamide, and isopropyl alcohol, so it is not only harmful to the environment and human body, but also various problems due to the presence of harmful components in the fiber after processing. will cause

Recognizing the above problems, relatively environmentally friendly coating techniques and coating agents have recently been developed. For example, in Korea Patent No. 10-1726996, nylon fiber fabric is processed with chinz passing between multiple rolls for smoothness. And a preparation step of flexible treatment, a coating step in which a coating film is formed by applying a water-soluble coating agent consisting of a polyurethane solid coating agent, water, and a water-soluble silicone softener to the textile fabric, and drying the nylon fiber fabric coated with the coating agent in a hot air dryer. A method for manufacturing a textile fabric using an eco-friendly water-soluble coating agent including a drying step and a smoothing step of maximizing flexibility by passing between the rolling rolls is constituted.

On the other hand, as an example of a fabric processing technology using persimmon, which is widely used as a material for natural dyeing, in Korea Patent Publication No. 10-2008-0028214, the fabric is immersed in persimmon juice to sufficiently penetrate it, and then pressure is applied using a padding mangle. After the persimmon fabric is produced by padding and drying naturally, the persimmon fabric is immersed in an aqueous solution of encapsulated oriental medicinal material or natural material to allow the material to penetrate into the fabric sufficiently, and then padding by applying pressure using a padding mangle, It constitutes a processing method of a functional persimmon processing fabric made to manufacture persimmon processing fabric by natural drying.

Korean Patent Laid-Open Patent No. 10 - 2003 - 0034103 (2003.05.01) Korean Patent No. 10 - 1726996 (2017.04.14) Korea Patent Publication No. 10-2008-0028214 (2008.03.31) Korean Patent Registration No. 10 - 1220687 (2013.01.10)

The conventional coatings for textiles as described above use a large amount of organic solvents such as methyl ethyl ketone, dimethylformamide, and isopropyl alcohol, which can cause serious environmental pollution and have a fatal effect on the human body. There are problems such as causing various diseases.

Therefore, in the prior art cited above, a method for manufacturing a textile fabric in which an environmentally friendly water-soluble coating agent consisting of a polyurethane solid coating agent, water and a water-soluble silicone softener is treated and coated on a nylon fiber fabric has been disclosed.

However, the polyurethane water-soluble coating agent for textile fabrics to which the prior art is applied is a compound formed by reacting an isocyanate group with a hydroxyl group and an emulsifier to form a material having a urethane group and then dispersing it in water. Compared to organic solvents, the harmfulness of raw materials is minimal, but it is difficult to apply to natural fibers as well as other fibers because it constitutes a coating agent with a chemical composition optimized for imparting smoothness to nylon fiber fabric.

On the other hand, persimmon (persimmon juice), which is widely used as a material for natural dyeing, contains pectin substances (pectinic acid, pectin, protopectin, tectinic acid, and fibrin) and sugars, proteins, lipids, etc. It is used for dyeing fibers through the process of dyeing and insolubilization of fibers because they are gelled and polymerized repeatedly to form macromolecules.

However, persimmon juice is a catechin polymer with a molecular weight of over 12,000 among natural products, and it is difficult to mix with other substances because it is insoluble and macromolecularized without ultraviolet rays, heat, or oxygen.

In addition, tannin dyeing used by extracting only tannins from the immature ingredients has a significantly lower dyeing power on the fibers, because there are no carbohydrates, sugars, proteins, lipids, etc., so only the property of tannins directly dyeing with the fibers remains. There is a big difference compared to this persimmon juice in terms of fastness and thickness. In other words, if only the condensed tannins of persimmon are extracted and used, there is no difference from synthetic tannins (syntans), so the value is practically low in terms of fiber dyeing power and adhesion.

Accordingly, the present invention was invented to solve the problems of the prior art as described above,

After mixing 30-60 parts by weight of casein to 30-60 parts by weight of fermented persimmon and stirring for 120 minutes, adding 0.1 parts by weight of an antifoaming agent based on the weight of the mixture and stabilizing for 24 hours to form a first agent;

After dissolving water-soluble chitosan in purified water, adding sodium alginate and heating in a bath to form a second agent;

and mixing and stirring the first and second agents prepared above, adding linseed oil, ethanol, a preservative, and an auxiliary additive, and stirring to obtain a natural resin coating composition.

In addition, the fermented persimmon,

Compressing immature persimmons harvested in Cheongdo to obtain persimmon juice containing 7 to 7.5% by weight of solids;

Putting persimmon juice filtered through a filter cloth into a fermenter, adding a complex enzyme in an amount of 0.01 to 0.05 parts by weight, and enzymatic treatment at 50 to 70° C. for 24 hours;

It is prepared by sterilizing the enzyme-treated persimmon juice at 100 to 110° C. and then concentrating under vacuum at 60 to 70° C. to obtain a fermented persimmon containing 15% by weight of solids,

The complex enzyme includes Pectinex ultra SP-L, SumyzymeAC, Cytolase PCL5, and Celluclast 1.5L.

In addition, the casein Ho is,

After dissolving 3.5 to 5.5 parts by weight of borax in 86 to 88 parts by weight of purified water, adding 8 to 9 parts by weight of casein, stirring, and raising the temperature to 100° C. to form an arc;

The prepared arc is allowed to cool and air bubbles are removed to obtain a casein arc.

In addition, the auxiliary additive is made to include egg white, guar gum, gum arabic, latex, pullulan, copal gum, and shellac.

Therefore, the present invention can achieve the purpose of producing an eco-friendly natural resin coating composition for fibers that imparts functions such as gloss, flexibility, and adhesion to fibers and minimizes the harmfulness caused by conventional chemical coating agents.

The present invention relates to fermented persimmon juice, which is a polymer material that can be coated on natural fibers, containing functionalities such as gloss and flexibility among natural resins, natural waxes, and spices existing in nature with a specific enzyme, and casein, an animal paste. Provided is a method for manufacturing a natural resin coating composition for fibers containing a natural material as a main component, and for compensating for the disadvantages of natural materials, which are weak in fastness, gloss, and adhesion.

In particular, formaldehyde and volatile organic compounds included in the existing coatings for textiles are chemical substances made by chemical bonding at high temperature and high pressure, and harmful substances are generated during the manufacturing and use process, and these substances do not decompose naturally. Since it accumulates and destroys the environment, the present invention has the advantage of minimizing the damage caused by these harmful substances so that a more eco-friendly fiber coating is made.

In addition, the present invention uses the properties of persimmon tannins, which are polycondensed and macromized, unlike persimmon juice extracted by pressing and extracting immature persimmons used for general persimmon dyeing or persimmon resin for paints, stabilized through a fermentation process by a specific enzyme. There is an advantage in that it is possible to prepare a natural resin coating composition that can implement a leather-like feel by coating the upper surface without being completely absorbed into the fiber by concentrating the persimmon and adding protein seasoning and adjuvants.

Hereinafter, the configuration and action according to a preferred embodiment of the method for manufacturing the natural resin coating composition for fibers of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a detailed description of a part that can be easily implemented by a person skilled in the art may be omitted. In addition, since the following description is given by way of a preferred embodiment of the present invention, the present invention is not limited by the following examples, and it is natural that various modifications may be provided within the scope of the present invention. will be.

The manufacturing method of the natural resin coating composition for fibers to which the technology of the present invention is applied is to use persimmon juice, casein, and other natural auxiliary materials, which are natural materials, to impart functions such as gloss and flexibility to the fibers, and to It should be noted that the invention relates to the preparation of coatings having advantages such as minimizing harm.

For this purpose, the method for producing the natural resin coating composition for fibers of the present invention is largely composed of a first agent, a second agent, and a natural resin coating composition by mixing the first agent and the second agent and an additive. It is made, including the step of obtaining, specifically as follows.

In the step of composing the first agent, 30-60 parts by weight of casein is mixed with 30-60 parts by weight of fermented persimmon and stirred for 120 minutes at 1500-3500 rpm, 0.1 parts by weight of an antifoaming agent is added based on the weight of the mixture, and for 24 hours This is a step of stabilizing to form the first agent.

The fermented persimmon is prepared by reacting a specific enzyme with persimmon juice, and is prepared through the steps of obtaining persimmon juice, enzymatic treatment, and obtaining the fermented persimmon juice.

The step of obtaining persimmon juice is a step of obtaining persimmon juice containing 7 to 7.5% by weight of solids by pressing the immature persimmons harvested in Cheongdo.

The enzymatic treatment is a step of enzymatic treatment at 50 to 70° C. for 24 hours by adding the persimmon juice filtered with a filter cloth to the fermenter, adding 0.01 to 0.05 parts by weight of a complex enzyme.

Persimmon juice in its natural state becomes opaque as it ages. The cause is often due to gelation or turbidity due to the presence of pectin, or when the persimmon juice is left at room temperature. The colloidal phenomenon of pectin is a big obstacle to clear (clarification) persimmon juice, and it is gelled by macromolecularization by polymerization of pectin, protein, and persimmon.

In addition, in the case of unripe fruits, turbidity may occur depending on the starch content contained therein. When heated to a high temperature, they are gelatinized and disappear, but at a low temperature, they are combined with each other to cause turbidity. Therefore, in the present invention, in order to solve the turbidity of the persimmon juice, a complex enzyme of pectinase, hemicellulase, and cellulase is prepared and centrifuged after the enzymatic reaction to increase transparency.

The complex enzyme used in the enzymatic treatment includes Pectinex ultra SP-L, SumyzymeAC, Cytolase PCL5, and Celluclast 1.5L.

The Pectinex ultra SP-L (novozymes, Inc.) is an enzyme having cellulase and pectinase activity, and has an excellent action for decomposing pectin. The SumyzymeAC is an enzyme that is a type of cellulase derived from Aspergillus niger. The Cytolase PCL5 is a β-glucosidase family, a glycolytic enzyme produced in Aspergillus, and is effective in removing odors. The Celluclast 1.5L is an enzyme with good decomposition ability of cellulase

The step of obtaining the fermented persimmon includes filtering the enzyme-treated persimmon juice through a glass filter, sterilizing at 100 to 110° C., and then vacuum-concentrating at 60 to 70° C. to obtain a fermented persimmon containing 15% by weight of solids. to be.

The casein arc is formed through the steps of forming a call as follows, and obtaining a casein arc.

Forming the arc is a step of dissolving 3.5 to 5.5 parts by weight of borax in 86 to 88 parts by weight of purified water, then adding 8 to 9 parts by weight of casein, stirring, and raising the temperature to 100° C. to form an arc.

The mixture of casein (molecular weight 22000-25000, immunoglobulin molecular weight 1000000 in immunoglobulin), a polymer protein-based resin, and persimmon juice is mixed at a temperature of 60°C using the amino-carbonyl reaction, which is the initial stage of the Maillard reaction. There is a difference in emulsion stability depending on temperature conditions and reaction time. Since the isoelectric point of casein is pH 4.6 and the pH of persimmon juice is about 3.5, when it becomes a mixture, more alkali components are required for dissolution due to the acidity of persimmon juice, and stabilization is required.

Therefore, in the step of creating the call and to the reaction by the addition of borax required for dissolution of the casein _{(Na 2 B 4 O 7 .10H} 2 O pH 9.5) and stirred for 120 minutes to dissolve the casein after cross-linking with a molecular weight borax Forms a polymer and cross-links with persimmon juice to form a stability.

The borax not only has the effect of increasing the viscosity of casein using the saturation of borax as a weak alkali, but is also the most effective in preventing gelation of persimmon and acts to stably form the casein-persimmon juice complex. That is, the viscosity of about 100 to 150 cp of the persimmon juice and casein complex can be raised to 1.000 cp depending on the borax saturation level to form a high-viscosity coating material.

The step of obtaining the casein arc is a step to obtain a casein arc by cooling the prepared arc and removing the bubbles in the solution.

On the other hand, the step of composing the second agent is a step of dissolving water-soluble chitosan in purified water, adding sodium alginate, and heating in a bath to form the second agent.

The chitosan is formed as a water-soluble polymer (chitosan 1% aqueous solution 102-106cp) and acts to reinforce viscosity, antibacterial, and moisturizing. The sodium alginate is an anionic organic polymer electrolyte and acts as a polymer flocculant.

In the step of obtaining the natural resin coating composition, the first agent and the second agent prepared in the above steps are mixed and stirred while adding linseed oil, ethanol, a preservative, and an auxiliary additive, and stirred at 1500 to 3500 rpm. It is a step of obtaining a natural resin coating composition.

The linseed oil is a dry fatty oil contained in flax seeds and acts to impart dryness together with ethanol.

The auxiliary additives include egg white family, guar gum family, gum arabic family, latex family, pullulan family, copal gum family, and shellac.

The egg white is added by boiling at less than 80° C. to prevent solidification, and serves to impart flexibility. The guar gum acts as an emulsion stabilizer and viscosity enhancer as a powder acidifying agent for the endosperm of Cyamopsis tetragonolobus seeds. The gum arabic acts as a viscosity and emulsification initiator due to its high pH stability. The latex acts as a modifier to impart flexibility and elasticity. The pullulan (Pullulan) acts to increase the viscosity and film properties as a by-product of the heukguk bacteria enzyme. The copal gum is dissolved in alcohol and acts to impart strength and dryness. The shellac is the secretion of the rack worm, which dissolves in alcohol and boric acid and acts to impart gloss.

The linseed oil, ethanol, preservative, and auxiliary additives are added in an amount of less than 10 parts by weight according to the properties such as the density of the fiber to be coated, the degree of mixing of the yarn, and the weight of the fabric to be added to the first and second agents. By mixing, a natural resin coating composition is obtained.

Hereinafter, an embodiment including a method of manufacturing a natural resin coating composition for fibers to which the technology of the present invention is applied having the configuration as described above is configured.

<Example 1>

Preparation of the first agent of the present invention.

1. Fermented persimmon: Press-extract the unripe persimmon harvested in Cheongdo to obtain persimmon juice with 7.2% solids, filter it with nylon cloth, and transfer it to a 100.000ml fermenter.

0.01 ~ 0.05 parts by weight of a complex enzyme containing Pectinex ultra SP-L, SumyzymeAC, Cytolase PCL5, and Celluclast 1.5L is put into the fermenter, and the persimmon juice is treated by enzymatic reaction at 50 ~ 70℃ for 24 hours.

The enzyme-treated persimmon juice is sterilized at 103° C. and concentrated under vacuum at 65° C. to obtain a fermented persimmon with a solid content of 15%.

2. Casein No.: Put 394 g of borax in 87.560 ml of purified water and dissolve, then add 850 g of casein and stir with an impeller.

After forming an arc by raising the temperature to 100°C, it is allowed to cool, and bubbles in the solution are removed to obtain a casein arc.

3. Mixing: Add 3.000 ml of casein to 6.000 ml of the fermented persimmon, and 0.1 parts by weight of a silicone antifoaming agent for food additives while stirring at 2000 rpm for 120 minutes, and then stabilizing for 24 hours to prepare the first agent.

<Example 2>

Preparation of the second agent of the present invention.

In 500 ml of purified water, 25 g of water-soluble chitosan (chitosan polymer, 1% aqueous solution 102-106 cp) is added and dissolved, then 5 g of sodium alginate is added and heated in a bath to prepare a second agent.

<Example 3>

Preparation of a natural resin coating composition for fibers according to the present invention.

Put the second agent into the first agent prepared in Examples 1 and 2, and add 200 ml of linseed oil, 190 ml of 95% ethanol, 3 g of preservative, and auxiliary additives while stirring, and stir at high speed at 1500 ~ 3500 rpm to natural A resin coating composition is completed.

The method for producing the natural resin coating composition for fiber according to the present invention as described above is a fermented persimmon in which persimmon juice, a polymer material that can be coated on natural fibers, is reacted with a specific enzyme, and casein, an animal paste, as main components, and has fastness and gloss It provides a method of manufacturing a natural resin coating composition for textiles containing a natural auxiliary material to compensate for the shortcomings of the weak natural material.

Therefore, the present invention manufactures a more eco-friendly coating composition for textiles by minimizing damage caused by formaldehyde, volatile organic compounds, etc. included in the existing coatings for textiles, and is not completely absorbed when coated on fibers and has a leather-like surface on the upper surface. Since it is possible to provide a natural resin coating composition for fibers capable of realizing a feeling, it is expected to have great industrial application in the field of eco-friendly material development or natural fiber processing.

Not applicable.

Claims (4)

After mixing 30-60 parts by weight of casein to 30-60 parts by weight of fermented persimmon and stirring for 120 minutes, adding 0.1 parts by weight of an antifoaming agent based on the weight of the mixture and stabilizing for 24 hours to form a first agent;
After dissolving water-soluble chitosan in purified water, adding sodium alginate and heating in a bath to form a second agent;
Natural for textile, characterized in that it comprises the step of obtaining a natural resin coating composition by mixing and stirring the first agent and the second agent prepared above, adding linseed oil, ethanol, a preservative, and an auxiliary additive, and stirring the mixture A method for producing a resin coating composition. The method of claim 1,
The fermented persimmon is
Compressing immature persimmons harvested in Cheongdo to obtain persimmon juice containing 7 to 7.5% by weight of solids;
Putting persimmon juice filtered through a filter cloth into a fermenter, adding a complex enzyme in an amount of 0.01 to 0.05 parts by weight, and enzymatic treatment at 50 to 70° C. for 24 hours;
It is prepared by sterilizing the enzyme-treated persimmon juice at 100 to 110° C. and then concentrating under vacuum at 60 to 70° C. to obtain a fermented persimmon containing 15% by weight of solids,
The complex enzyme, Pectinex ultra SP-L, SumyzymeAC, Cytolase PCL5, and Celluclast 1.5L The method of manufacturing a natural resin coating composition for textiles, characterized in that it contains. The method of claim 1,
The casein Ho is,
After dissolving 3.5 to 5.5 parts by weight of borax in 86 to 88 parts by weight of purified water, adding 8 to 9 parts by weight of casein, stirring, and raising the temperature to 100° C. to form an arc;
A method for producing a natural resin coating composition for fibers, characterized in that it is configured to be prepared by cooling the formed arc and removing air bubbles to obtain a casein arc. The method of claim 1,
The auxiliary additive, egg white, guar gum, gum arabic, latex, pullulan, copal gum, and a method of manufacturing a natural resin coating composition for textiles, characterized in that it comprises shellac.