KR20020072014A - Digital textile printing method - Google Patents

Abstract

PURPOSE: A digital printing method using sublimation transfer is provided which can print regardless of a kind of fabrics, does not generate problems related with acid treatment of fabrics and need washing and drying processes of fabrics, and prevents water pollution. CONSTITUTION: This digital printing process consists of: preparing transfer paper; printing disperse dye ink on the transfer paper with an ink-jet plotter; placing a fabric on the printing surface of the transfer paper; and then sublimation-printing the disperse dye ink printed on the transfer paper to dye the disperse dye on the fabric, wherein the transfer paper preparing process comprises coating water-absorbing resin such as sodium alginate or polyvinyl alcohol and an absorbing filler on paper and drying the paper on which the water-absorbing resin and absorbing filler are coated.

Description

Digital printing method {Digital textile printing method}

The present invention relates to a digital printing method, and more particularly, to a digital printing method using sublimation transcription.

Printing refers to a process of expressing a pattern or a shape by partially engraving a dye by putting it in a viscous solution in which a dye or a pigment is viscous.

Printing is a kind of dyeing. In normal dyeing, the dye is immersed in a dye solution and colored uniformly. A printing arc is made, whereby the dye is partly colored or decolorized. Therefore, printing can be called partial dyeing.

Printing is a very in-depth fiber processing method because it differs from dyeing in that it can use pigments that cannot be used in dyeing and can increase artistic added value by various techniques. I can speak.

Methods of printing are largely classified into direct printing, printing, printing, printing, and special printing. Special printing methods include transfer printing, multicolored printing, opal printing, stream printing, flock printing, and vigouureux printing. And digital textile printing. Here, the digital printing is a method of printing the contents prepared on a computer in advance on a fabric such as polyester, cotton, or silk using an inkjet plotter.

The conventional digital printing method is as follows.

1 is a process chart for explaining a conventional digital printing method.

Referring to FIG. 1, first of all, the fabric is dried in a pre-treatment step so as to prevent bleeding and high color development, after the fabric is immersed in a chemical agent and alkaline chemicals. Next, the computer-designed contents are printed on the original fabric coated with the chemicals and alkaline chemicals by means of an inkjet plotter, and then the dedicated dye ink is printed. Then, the ink is evaporated so as to dye onto the original fabric. Subsequently, it is washed with water to remove the remaining chemicals and dyes remaining. Then, printing is finished by drying the fabric.

At this time, the lubricating agent is an intermediate medium which dyes a dye or a pigment onto a fabric, and prevents bleeding of the dyes printed on the fabric, flow of outlines, and fringes. In addition, the degree of penetration into the fabric and the uniformity of the color of the printed cotton will vary depending on the type of glue used and the sticky viscosity. In addition, the inhibitor has a great influence on the expression method of the pattern, the sharpness of the color, the density of the color, the fastness of the dye after dyeing, the completion of the product, and the touch. Therefore, in order to print well, selection of the agent is very important.

Determination is selected and determined according to the printing method, dye used, type of chemicals, type of printing cloth, etc., and it causes not only a decrease in productivity when printing with each fabric but also poor printing Cause problems.

In addition, since the ink is deposited on the fabric to be dyed, the washing process for removing the remaining chemicals and dyes remaining after the dyeing process and the drying process are necessary, so the production time is increased. As a result, manufacturing costs rise and water pollution caused by wastewater generated in the washing process is serious.

The present invention has been made to solve the above problems, the technical problem of the present invention is to provide a digital printing method that can simplify the process and prevent the generation of pollution sources.

1 is a process chart for explaining a conventional digital printing method;

2 is a flowchart illustrating a digital printing method according to the present invention.

Digital printing method of the present invention for achieving the above technical problem, the step of preparing a transfer sheet; Printing a disperse dye ink on the transfer paper with an ink jet plotter; Positioning the fabric on the printing surface of the transfer paper, and subliming the dispersed dye ink printed on the transfer paper so that the disperse dye ink is dyed on the fabric.

At this time, the fabric may be made of polyester.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a flowchart illustrating a digital printing method according to the present invention.

Referring to FIG. 2, first, a transfer sheet is prepared. The transfer paper is prepared by applying the absorbent resin and the absorbent filler to the paper and then drying the paper coated with the absorbent resin and the absorbent filler. At this time, the absorbent resin is made of sodium alginate or polyvinyl alcohol (PVA), and the absorbent filler is made of talc or silica. However, the step of preparing the transfer paper is not necessarily limited thereto, and the absorbent resin and the absorbent filler are not limited thereto.

Next, the disperse dye ink is printed on the transfer paper through an inkjet plotter connected to a computer on which the contents to be printed are designed. Here, the disperse dye is a fine powder that does not dissolve or dissolve well in water, and is dispersed in water in a colloidal state using a dispersing agent such as a surfactant. Disperse dyes are dyes having no strong hydrophilic group, and azo, anthraquinone, azomethine, and nitro dyes.

Then, the non-pretreated general polyester fabric was placed on the printing side of the transfer paper, that is, the surface on which the disperse dye ink was printed, and then the transfer paper and the polyester fabric were put together in a roll transfer machine at 190-200 ° C. in a 30-60 degree range. Pass for seconds. Therefore, the disperse dye ink of the transfer paper is sublimed and dyed to a polyester fabric to finish digital printing.

According to the above-described digital printing method of the present invention, it is not necessary to manufacture the film according to the color number, silk screen plate can be produced in small quantities without the need for preparation costs, and by using the non-pre-treated general fabric to the type of fabric It can be printed regardless, and since the problem caused by the pre-treatment of the fabric does not occur, the defective rate generated during printing can be significantly reduced.

In addition, the pre-treatment process of the fabric is not required, and since the sublimation transfer process is not water used, the washing and drying processes of the fabric are not required as in the prior art, thereby improving productivity.

Furthermore, it is possible to prevent water pollution due to wastewater generated in the pre-treatment process of the conventional fabric and the water washing process of the fabric and to reduce the environmental pollution due to digital printing because the used waste transfer paper is recycled as paper.

The present invention is not limited only to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

Claims (4)

Preparing a transfer sheet; Printing the disperse dye ink on the transfer paper with an inkjet plotter; Positioning the fabric on the printing surface of the transfer paper, and subliming the transferred dye ink printed on the transfer paper so that the dispersion dye ink is dyed on the fabric. The method of claim 1, wherein the preparing of the transfer sheet comprises: Applying an absorbent resin and an absorbent filler to the paper; And drying the paper to which the absorbent resin and the absorbent filler are applied. The method of claim 2, wherein the absorbent resin is made of sodium alginate or polyvinyl alcohol, and the absorbent filler is made of talc or silica. The digital printing method according to claim 1, wherein the fabric is made of polyester.