KR100310972B1 - Printing method using natural dyes - Google Patents

Abstract

PURPOSE: A printing method is provided which is characterized by being possible to form various patterns by using natural dyes and having excellent washing fastness and frictional fastness. CONSTITUTION: The printing method using natural dyes is comprised of: dip-dyeing knitted cloth using natural dyes to perform ground dyeing; mixing mordant with size to produce a mordant mixture; and then printing a pattern on the dyed knitted cloth with the mordant mixture to discolor a printed part by chemical reaction between natural dyes and the mordant mixture. The ground dyeing is performed by using natural dyes and mordant together.

Description

Printing method using natural dyes {Printing method using natural dyes}

The present invention relates to a printing method using a natural dye. More specifically, the present invention relates to a printing method using a natural dye to be dyed by a printing method that can freely form a predetermined pattern using a natural dye.

Natural dyes are roughly divided into vegetable dyes, animal dyes and mineral dyes, which are naturally obtainable and have been widely used as dyes from whales. Natural dyes have many advantages such as natural colors of dyes, less adverse effects on dyes than synthetic dyes, natural environment-friendly, less environmental pollution, and no excessive cost for wastewater treatment. Nevertheless, since dyeing is low in dyeing and only dyeing by dyeing is commercially available, it is difficult to form free patterns, the yield of dyes is limited, the color fastness of dyeings is poor, and stain stains are easily generated. With the development of synthetic dyes, its use has gradually decreased, and now it is hardly found except for special uses.

However, with the recent development of science and technology and the rapid increase in productivity, the abundance of textile products has increased the demand for functional, hygienic and health-oriented products in recent years. As a result, it was found that there are dyes with functionalities among natural dyes.

As mentioned above, dyeing by the dyeing of natural dyes is difficult to dye by the conventional dyeing method of simply impregnating a salt solution in a salt solution or impregnating several times repeatedly, and the color fastness of the dyed dye is low. There was a problem, and therefore had to rely on manual repetition while observing the degree of dyeing directly, which became a great obstacle to industrialization.

Furthermore, although the color of natural dyes can be changed and dyeing property can be increased by mixing with mordant, there is a disadvantage that free pattern formation is difficult by dyeing. Part of the fabric is partially dyed with thread, and only the tied part is soaked in salt solution and then partially dyed to form a pattern. However, since it is made by hand, mass production is impossible. There was a problem that there is a limit to forming.

An object of the present invention is to provide a printing method that allows the formation of a free pattern using a natural dye.

In the printing method using the natural dye according to the present invention, after dyeing the knitted fabric with a natural dye according to the conventional dyeing method, using a mordant mixture of the dyeing agent and the dye of the natural dye on the knitted fabric, the base dyeing By printing in a predetermined pattern, it includes printing by discoloration of the printing portion without additional adhesion of the printing dye.

Hereinafter, the present invention will be described in detail with reference to specific examples.

The printing method using the natural dyes of the present invention is based on the natural dyeing, and then dyed the knitted fabric according to the conventional dyeing method, and then printed with a mordant mixture mixed with the mordant used for the base dyeing, and the natural portion in the printed portion It is characterized by the fact that it is discolored by chemical reaction between dye and mordant to form a pattern.

In the dyeing using natural dyes, it may be made by immersing the knitted fabric in the salt solution once or several times according to a conventional dyeing method, and all kinds of natural dyes that have been used in practice can be used as the natural dyes.

The natural dyes are classified by color; yellow dyes such as gardenia, turmeric, yellow lotus, and yellowish white, red dyes such as marshmallow, safflower, lumber, licorice, ocher, plum, mulberry, alder, jujube, sorghum and black tea. And brown and black dyes such as pine, maple, ginkgo, acorns, persimmon, chestnut, and ink, and blue dyes such as buckthorn and chickweed.

In addition, it can be understood that a plurality of natural dyes, which are divided into animal dyes and mineral dyes, can all be used, and the present invention is not limited to these kinds of natural dyes.

Background dyeing according to the conventional dyeing method using the natural dyes can be easily understood by those skilled in the art.

Subsequently, the base-dyed knit fabric is printed with a mordant mixture obtained by mixing a mordant and a paint to increase the degree of dyeing by reacting with the natural dyes, and also use common mordants that can cause color deformation during dyeing with natural dyes. In the case of using a mordant mixture in which a mordant is mixed with a paste, it is characterized in that it prints according to a conventional printing method to form a pattern.

The mordant includes lye, salt, iron solution, vinegar, lime, whistle (powder of clam shell) and alum. These mordants are those which have been used in the past for the conventional dyeing of natural dyes, and can be easily understood by those skilled in the art.

The use of the mordant may vary the coloration effect of the natural dyes, and may be represented as shown in Tables 1 to 4 below, for example, by way of representative combinations.

Color dyes Mordant color Yellow Dye Gardenia Lye, alum yellow Turmeric Iron Brown lime amber lye Red goldthread alum yellow lime amber Yellow white Lye, alum yellow

Color dyes Mordant color Red Dye Safflower vinegar Red Joiner Lye, lime purple alum Red vinegar yellow Iron purple Salt Brown Self lime Cyan vinegar Grape lye purple Madder lye Red alum Red Iron Brown

Color dyes Mordant color Brown Dye feeling lime Chocolate Lye, alum yellow Iron black night lye Brown Iron black Acorn lye partridge Iron black alum Brown Alder alum Brown Iron black gallnut Iron Mauve, mauve Indian ink vinegar Gray, black Mugwort alum Brown Iron Cyan ocher Glue ocher

Color dyes Mordant color Blue dye side Lime, lye blue Chicken robe alum blue

In order to express the color not shown in the above table, it can be used by extracting the color by mixing the mordant with these natural dyes.

In the above, the dye serves to fix the mordant on the knitted fabric, which has been dyed with natural dyes at a designated position to form a predetermined pattern for a sufficient time for the mordant and the natural dye to react. As a neutral polymer, paste, glue and Examples include CMC (Carboxy methyl cellulose), indalka as an acidic substance, mayprogum, and hunori (byeongpo) as a basic substance, tragant gum (sincin), and sodium alginate. However, the present invention is not limited to the above-mentioned ingredients, and it will be obvious to those skilled in the art that any one that can fix the mordant on a knitted fabric can be used for a certain time.

There is no restriction in the mixing ratio at the time of mixing the mordant and the paste, and it can be easily understood by those skilled in the art as it can be achieved by mixing and fixing the mordant in a paste sufficient to fix the mordant to the knitted fabric.

It will be understood that those skilled in the art can form a predetermined pattern by printing such a mordant mixture on the base dyed knitted fabric.

As for the printing, a conventional printing method can be used, and a commercially available printing machine can be used here.

The reaction between the base dye and the mordant may be initiated only by printing, and accordingly, only the portion where the mordant mixture is attached by the chemical reaction between the natural dye and the mordant may be distinguished from the base dye color. The pattern can be easily formed.

Hereinafter, preferred embodiments and comparative examples of the present invention will be described.

The following examples are intended to illustrate the invention and should not be understood as limiting the scope of the invention.

Example 1

As the natural dye, using the extract of the joiner, the base dyeing with natural dyes only by conventional dyeing method, or the base dyeing using natural dyes and mordant, and printing the part corresponding to the pattern by varying the mordant by conventional printing method It was. Soda alginate was used as a coating material, and the mixing ratio of mordant and coating material was 1: 1.

The use of the mordant at the time of background dyeing and printing and the color expressed accordingly are shown in Table 5 below.

division Ground dyeing Dyeing (Printing) Mordant color Mordant color One - Orange alum Dark orange 2 - Orange alum Red 3 - Orange Iron Purple 4 - Orange Salt maroon 5 - Orange lye purple 6 alum Red Iron Gray and dark purple 7 alum Red Salt maroon 8 alum Red lye purple 9 Iron Purple Thick iron Dark purple 10 Iron Purple Salt maroon 11 Iron Purple lye purple 12 Salt maroon lye purple 13 lye purple Thick lye Dark purple 14 Salt maroon Dark salt Dark reddish brown 15 alum Red Dark alum Dark red

Example 2

Using natural extracts of turmeric as a natural dye, base dyeing with natural dyes alone or under dyeing with natural dyes and mordants, and printing the part corresponding to the pattern by varying mordant by conventional printing method It was. Soda alginate was used as a coating material, and the mixing ratio of mordant and coating material was 1: 1.

The use of the mordant at the time of background dyeing and printing and the color expressed accordingly are shown in Table 6 below.

division Ground dyeing Dyeing (Printing) Mordant color Mordant color One Light lye Red Thick lye Dark red 2 Iron Brown Thick iron Dark brown 3 lime amber Dark lime Dark amber 4 lye Red Iron Brown 5 lye Red lime amber 6 - yellow lye Red 7 - yellow lime amber 8 - yellow Iron Brown 9 Iron Brown lime amber

As a result of the synthesis of the above embodiments, even when dyeing using only one of the natural dyes, the color of the base dye may be different depending on the use of the mordant at the time of base dyeing and the type of the mordant used, on top of that It was confirmed that by printing the mordant mixture mixed with and forage, only the part of the pattern could be discolored and the pattern could be changed in various ways.

In addition, the dyeing fabrics obtained in Examples 1 and 2 were measured for wash fastness and friction fastness.

The test conditions of the fastness to washing were determined in accordance with KS-K 0430, A-1 method, starting at 40 ° C., washing for 30 minutes, washing with water, and drying, and then comparing with the gray scale. The instrument used a Launder-O-meter (model name: Atlas LP2). Wash fastness was 4 to 5 ratings was confirmed that the fastness.

Test conditions of friction fastness were tested by the method according to KS-K-0650. The instrument used Creckmeter CM5 (manufactured by Atlas Electric Device Co.). The friction fastness was 3 to 5 grades in dry friction and 2 to 5 grades in wet friction, and it was confirmed that the fastness sufficient to be used as a real product.

Therefore, according to the present invention, by enabling both dyeing and printing by using a natural dye, it is possible to form a free pattern by printing, thereby enabling a natural dyeing with a pattern.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (2)

(Correction) background dyeing of the knitted fabric using a natural dye by a dip dyeing method; Mixing a mordant and a mortar to form a mordant mixture; And Printing using the dyeing mixture using a color change by a chemical reaction between the natural dye and the printing mixture at the printing portion by printing the base dyed knitted fabric with a predetermined pattern; Printing method using a natural dye, characterized in that made. (Correction) The method according to claim 1, The dyeing method using the natural dye, characterized in that the base dyeing using a natural dye and mordant together.