Inglaze stain - decorative color on the glaze that sinks into the glaze
Decoration of the workpiece by sticking stained decals in the glaze and then fire it so that the decorative color on the glaze sinks into the glaze is widely popular because the stain color in the glaze is non-toxic from the solution so it is safe to use. The unique properties of the color in the glaze is commonly used to decorate bone china and porcelain products.
Color printed as a decorative pattern on that coating prepared from color mixtures with frit by having a higher whiteness temperature than color on glaze using a firing temperature of 900-1000 °C for bone china products coated with low solution frit glaze and fired at a high temperature of 1250 °C For the color printed as a pattern on the porcelain clay texture. The glaze is melted into the glaze layer while firing in the second ceramic kiln making the decorative pattern durable, not be easily chipped and unable to dissolve the toxicity on its surface of the coating
Preparation of colors in the glazes from stain colors synthetic fired at a high temperature. To prepare colors in the glazes approximately 10-40 % stain powder is mixed with the frit or glaze at the desired firing temperature. 60-90 % If embossed, add alumina hydrate. 0-20% The glaze applied to any glazes must be formulated to be non-reactive after the color is fired which will be earthenware glazes, stoneware or porcelain glazes. The types of stain in glazes that are sold include stain in the traditional glazes, stain in the lead-free glazes, stain in the fast fired glazes and stain in the fast fired glazes without lead
At present, the firing of decorative color in glazes is preferable to fast firing cycles of 60 - 120 minutes to save fuel and production time. The factory that produces colors for sale has invented colors in the group of fresh colors that are resistant to high temperatures and has good stability after firing. The stain colors factory has researched to produce more bright colors for high temperature firing and can control the amount of lead solution in the stain colors
The color in the glaze can be used to decorate the glaze of all kinds of crockery products but it is popular in bone china products and porcelain products. Each type of glazes has a temperature of firing along with the clay texture of that product. A good color in the glaze should has good stability in the glaze and be able to mix each and every color with each other to avoid problems when printed patterns overlap and colors should be bright after firing.