degrees celsius. Because the stripping water transfer paper by surface has a layer of protective varnish, no longer spray protection. But there is no water soluble transfer paper graphic surface protective layer, natural drying need to spray varnish treatment, spraying UV light oil curing machine for curing. When spraying varnish, we must pay attention to prevent dust falling on the surface, otherwise, the appearance of the product will be greatly affected. The coating thickness is controlled by adjusting the viscosity of the varnish and the amount of paint sprayed. Excessive spraying results in a decrease in uniformity. For the larger transfer area of the substrate, using screen printing for glazing, you can get a thicker coating, but also very effective protection measures.

Application of water transfer printing

1. printing materials

Water transfer technology can be used to decorate most of the articles in daily life, such as plastic, metal, glass, ceramics, wooden flat and molded body. According to the need for coating before transfer, you can print materials are divided into the following two categories.

(1) material that is easy to transfer

The printing properties of some materials in plastics, such as polystyrene (PS), ABS, organic glass, polycarbonate (PC), polyvinyl chloride (PVC) material, without coating can transfer printing transfer principle and similarity principle.

(2) materials that need coating

Non - absorbent materials such as glass, metal and ceramics, as well as non - polar materials, such as polyethylene and polypropylene, need to be coated with special coatings to carry out water transfer. The coating is a kind of paint with good adhesion to the transfer material. It can be processed by screen printing, spray coating and roller coating. From the perspective of printing, coating technology to solve the problem of surface decoration for many not printed materials, many transfer process is now popular, such as heat transfer, hot melt transfer, ceramic decal, pressure-sensitive transfer, are needed in the surface of the substrate by coating processing.

2. water transfer printing products

(1) telecommunications products

Today, people are becoming more and more interested in the personalized decoration of mobile phones. In addition to their quality, the unique appearance of mobile phone manufacturers is also the focus of competition.

Generally speaking, the shell of mobile phone is made of plastic injection, and adding various pigments in the ingredient is a more traditional way of decoration, but this method has higher cost and is not easy to change. In the rapidly changing information society, people's aesthetic taste is very difficult to grasp the inconstant in policy. Using this method is obviously difficult to meet the trend of human pursuit of

fashion, and water transfer printing technology can make mobile phone shell decoration more personality, colorful.

(2) decoration industry

The characteristics of water transfer printing technology is the most easy to implement personalized, which in itself is love change and individuality young, so many young people in the application of technology transfer on the occasion, such as leisure teahouse, hall and indoor window can be water transfer for decoration, and the regular water transfer process change of decorative patterns, in order to obtain fresh feeling; in the furniture industry, painting once occupied the important position, the rise of the water transfer process in recent years, changed the furniture decorative pattern is single, drab, serious environmental pollution at present.

(3) arts and crafts

This is a rely on appearance to conquer the world of consumers, to win customers immutable and frozen face is futile. Performance of water transfer technology in surface finishing of crafts is an investment should not choose one of too big. Water transfer printing is difficult to say what special advantages, but can not help but admit that it will many of the last century's 70s antique into the new generation in twenty-first Century, to get people's favor. Examples in this regard, the clock on the wall beyond count, such as table frame, roof chandelier.

Obviously, water transfer technology is available in a new way

to achieve specific substrate surface decoration, and decoration graphic novel, high quality. But for now, the process of water transfer process * basically stay in the tedious work manual, also can not complete the precise positioning of the polychromatic, mechanical process is relatively slow. These problems limit the further development of water transfer technology.

Brief introduction of water transfer printing process

With the improvement of product packaging and decoration requirements, the application of water transfer printing has been developed and used more and more widely. The principle of indirect printing and perfect printing effect to solve the problem of surface decoration of many products, mainly used to transfer all kinds of ceramic, glass paper etc..

- transfer objects widely

1. printing of ceramic decal. Can be used in ceramic tableware, ceramic water and other daily-use ceramics pattern making, can be used for ceramic tiles made of decorative tiles, waistline, ceramics and other building decoration.

2. decorative glass. Water can be used for glass, glass bottles, all kinds of ads mugs, glass containers and decorative glass.

3. helmet decals printed. Widely used in motorcycle helmet, helmet and other surface pattern design.

4. sporting goods decals. Such as tennis rackets, fishing rod