Colored glazed glass U-shaped glass is a kind of decorative glass product, which is made by printing inorganic glaze (also called ink) on the surface of glass, then tempering after drying, and sintering the glaze on the surface of glass forever.

The glazes used in colored glass U-shaped glass are generally inorganic colorants and low melting glass. In the process of toughening sintering, the glazes melt on the surface of the glass, so it has stable color and is not easy to fade, glaze layer is firm and not easy to fall off can be achieved with the life of the building.

Colored glazed glass U-shaped glass can also be coated, laminated, synthetic hollow composite processing, so as to obtain other uses of special properties. Therefore, it is widely used in architectural decoration industry, furniture glass, electronic glass and so on also often use color glaze process.

Color glazed glass U-shaped glass generally refers to high-temperature glazed glass, glaze after printing in 600-700 ° C temperature sintered in the glass surface. The low-temperature glaze is also called low-temperature ink, is printed on the surface of the glass after the drying of low-temperature ink products, drying temperature is generally not more than 200 degrees C.

Because the low temperature glaze does not need to pass through the high temperature, its pigment may use some organic pigments, therefore the color is richer, the selectivity is more. But low-temperature glaze and glass adhesion than high-temperature glaze difference, mostly with nails can be deducted, while color durability does not allow high-temperature glaze. In general, home appliances, electronic glass more applications.

Screen printing refers to glaze printing on the means of glass, high-temperature glaze and low-temperature glaze can be used screen printing process. Screen printing is generally relative to roll printing, roll printing is generally only full plate printing or regular patterns.

In the past, the glazes used in colored glass U-shaped glass were all oily glazes, that is, the pigments needed to be printed with oily solvent and alkyd resin after blending. Therefore, VOC (volatile organic compounds) is produced in the production of U-shaped colored glazed glass, which has a certain impact on operators and the environment.

In recent years, water-based glazes began to emerge. Water-based glazes replaced oily solvents and alkyd resins, making the production process of U-shaped glazed glass more healthy and environmentally friendly. However, the diffusivity and adhesion of water as a solvent are obviously worse than that of oil, so it requires higher production process.

In order to reduce the melting point of glaze, lead glass or other lead-containing materials were often added to improve the color saturation of glaze in the early years. In recent years, with the promotion of environmental protection concept, many glaze manufacturers launched a lead-free glaze, the performance of the basic and lead-containing glaze close.

The U-shaped glass with colored glaze used in architecture usually has regular geometric patterns such as dots and lines. The good design of these patterns can make the building and space show a simple and generous style. But in some cases, the geometric pattern can be handled carelessly visual illusion.

For a long time, people have been in pursuit of environmental protection, beauty and cultural harmony in the building decoration industry a large number of applications of colored glass. However, due to the particularity of technology, manufacture and material, stained glass is not only expensive, but also difficult to overcome the problem of fading. In order to popularize colored glass, many glass enterprises at home and abroad are committed to its process technology research.