KR20060040926A - High fatigue registant, high photo-registant, high coloration coating solution and coated textile - Google Patents

Abstract

The dyeing method that displays the pattern on the fabric is called printing, and the existing printing technology takes about 10-15 days and requires complicated processes such as color separation, drawing, and engraving. However, digital printing technology is an advanced printing technique that prints a computer design or image on paper in the same way as printing on paper. It is possible to output the live image on the fiber fabric in real time. In addition, compared to the conventional printing, only mass production was possible in terms of productivity, and in the case of digital printing, even one yard can be produced without deterioration in productivity, thereby realizing small-scale production of various products. Among these technologies, the pretreatment for ink jet printers is used for the purpose of forming a vivid pattern without the ink spreading on the fabric before printing the fiber to the ink jet printer, unlike the general pretreatment for textile dye processing. The present invention relates to a pretreatment liquid and an output fabric of a fabric for an ink jet printer for synthetic fibers such as polyester, which can improve durability, light resistance and exhibit vivid color strength. Specifically, the pretreatment coating liquid is composed of acrylic resin and porous silica with special surface modification.

The output fabric coated with the pretreatment solution of the present invention not only shows excellent durability, light resistance and color development with respect to color inkjets, but also has excellent clarity and sharpness because there is no spread of the image, and can be used for practical use in advertising fields. It shows excellent performance compared with other proposed pretreatment solutions.

Digital Printing, Inkjet Fabric Pretreatment Liquid, Surface Modified Silica, Durable, Light Resistance, Color Development, Synthetic Fiber, Polyester, Actual Power, Dialkylaminopropyltriethylsilane

Description

High durability, high light resistance, high color pretreatment and printing fabric for inkjet printing {High fatigue registant, high photo-registant, high coloration coating solution and coated textile}

Currently, the printing industry needs to improve the planning capability of products, to produce samples close to the finished products, to produce small quantities of various kinds, and to establish a rapid production system that can immediately respond to the demands of the market and consumers. R & D and commercialization of color simulation system using computer technology, automatic drawing system that produces sketch film, and printing inkjet printer which prints directly onto fabric without using plate are progressing in this era. . Until now, due to various problems to be solved, its use has been limited to swatching or printing of small lot, but recently, the development is attracting attention as the next generation printing method with the development of related technology.

Digital printing means that the process from design to printing is 100% digitized. In the current printing, inkjet printer is used to print with no plate. Digital printing system equipment includes printers, software, ink dyes, fabrics and related pretreatment chemicals and equipment, and fabric pre- and post-treatment equipment that can be attached to the printer. It belongs to the category of printing equipment.

By using this system, shortening the process and fixing cost by minimizing the process, creating a new printing design by improving various color and pattern expression ability, marketing effect using the developed network and database system, undyed dye and treatment agent The company is expected to reduce the burden of wastewater treatment, and above all, as it is possible to produce a variety of small lots efficiently, it will be able to meet the needs of various customers by responding quickly to market changes.

The main products of the digital printing system are printers, software, inks, special treatment agents, and digital printing services.

Digital printing is just beginning, and various predictions are vague. However, the demand for digital printing ink is 410 billion in 2001, 2.5 billion in Korea, and 1.4 trillion in 2004. (World) and 20 billion won (domestic).

At present, ink jet printing is recognized among designers for its usefulness first. The reason why fashion designers are interested in inkjet printing is that if the design is ready, the inkjet printing technology can be used to produce a work in just 1-2 hours. In addition, due to the rapidity and recent technological development, not only the width of the material is diversified, but also the ink and dye can be used almost without limitation, and the fiber material can be worked with all materials such as natural fiber and chemical fiber. It is expected that more designers will prefer inkjet printing in the future.

Inkjet printing is easy to print at low cost compared to other printing methods such as electrostatic toner and sublimation transfer for computer output use, and it has excellent features such as large size printing, and it is suitable for computer as well as office and industrial use. It is spreading. However, because the ink is water-based ink, it modifies the surface of receptors such as paper, synthetic film, and woven fabric, and hydrophilic polymers such as PVA (polyvinyl alcohol) and PVP (polyvinylpyrrolidone) and special ceramics (alumina). Sol) is used as a surface treatment agent, but hydrophilic polymers are limited in water resistance and chemical conversion quality, and special ceramics are excellent in performance but expensive. In response to this, Japan's Ink Chemicals Co., Ltd. has developed and marketed a new drug that can bring about a significant improvement in printing functionality at a low cost by applying or impregnating a resin using an aqueous urethane to a receptor. This treatment forms a microporous gel film on the surface layer of the receptor, which improves ink repair, adhesion, and water absorption, and provides a clear image with less smearing, excellent water resistance and friction. Can be. Moreover, since the adhesiveness of a plastic film is excellent, the selection range of a receptor material also becomes large. In the case of the Japanese ink industry, we confirmed that the hiring of large-scale printing companies and paper suppliers is being made in earnest through sample activities so far, and we expect the sales of 500 million yen in the first year, and the demand will increase further in the future. The company plans to sell 1.5 billion yen in three years with the development of high-quality glossy paper. Moreover, inkjet printers are expected to reach 120 million units worldwide in 2000. Based on this, the demand for receptors is estimated to be 2 to 30,000 tons per year.

On the other hand, in Korea, some products have been developed, but no products have been developed to satisfy consumers.

The present invention is to provide a highly durable pretreatment liquid consisting of an acrylic binder and surface-modified porous silica in order to solve the above problems and to provide a fabric for inkjet printing coated with the same.

According to the present invention to solve the above problems there is provided a high durability, high light resistance, high color development pretreatment liquid consisting of an acrylic binder and surface-modified porous silica and a synthetic fiber fabric coated thereon. Hereinafter, the present invention will be described in more detail.

In general, the inkjet fabric is coated with a resin, an absorption filler, etc. to maximize the effect of inkjet printing. The polymer resin has excellent water adsorption property, facilitates the adsorption and diffusion of the aqueous ink into the inside, and serves to increase the speed of drying the ink after printing. In the present invention, an acrylic resin was used. In addition, the absorption filler absorbs the moisture of the ink to prevent the ink from spreading. Generally, alumina powder, silicon oxide fine particles, silica, and dalc are used, but in the present invention, a pore diameter of 35 Å and a surface area of 900 m 2 / g are used. Eggplants were surface modified using porous silica.

Dialkyl amino propyl triethylsilane was used as the surface modifier. Specifically, 3 parts of the porous silica of the above-mentioned material was added to a benzene solution of 10% dialkyl amino propyl triethylsilane, stirred at room temperature for 30 minutes, and filtered. Drying yields surface modified silica.

Since the surface modified silica is porous, it can quickly absorb water in the ink solution. Since the dialkyl group of the dialkylamino group is hydrophobic, the pigment particles can be captured by hydrophobic bonding. As described above, two functions, namely, water absorption and pigment capture, are possible as one material.

Non-limiting examples of the present invention will be described in more detail.

Example 1

Preservation

100 parts by weight of an acrylic binder emulsion

25 parts by weight of surface modified silica

The mixture was coated on top of the polyether fabric in an amount of 20 g / m 2.

Example 2

The same pretreatment liquid as in [Example 1] was used except that nylon fabric was used instead of polyester fabric.

Example 3

Pretreatment liquid composition

100 parts by weight of an acrylic binder emulsion

15 parts by weight of surface modified silica

The mixture was coated on the polyester fabric in an amount of 30 g / m 2.

Example 4

The same pretreatment liquid as that of [Example 3] was used except that nylon woven end was used instead of polyester.

Comparative Example 1

A commercial pretreatment solution was used to coat the polyester in an amount of 20 g / m 2.

Using the output fabric coated with the above composition, the characteristics after outputting by applying the water-based pigment ink according to the prior art were compared. Indicated.

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Light resistance O O O O X Color development O O O O Ink absorption O O O O X

As will be apparent from the above experimental results, the coating liquid was prepared by using porous surface modified silica as a filler, and the output fabric using the same showed an excellent effect on the actual output using ink jet printing.                     

Claims (3)

Preparation method of pretreatment for ink jet printing using acrylic resin and porous surface modified silica         Method of preparing a porous surface modified silica according to claim 1 Specifically, the reaction of porous silica with dialkyl amino propyltriethylsilane         Polyester and nylon fabrics treated with the pretreatment agent