Ceramic decorative colorants and printing techniques
We are a big printing company in Shenzhen China . We offer all book publications, hardcover book printing, papercover book printing, hardcover notebook, sprial book printing, saddle stiching book printing, booklet printing,packaging box, calendars, all kinds of PVC, product brochures, notes, Children's book, stickers, all kinds of special paper color printing products, game cardand so on.
For more information please visit
http://www.joyful-printing.com. ENG only
http://www.joyful-printing.net
http://www.joyful-printing.org
email: info@joyful-printing.net
First, ceramic coloring commonly used colorants are mainly inorganic oxides, such as:
White - magnesium oxide, magnesium carbonate, aluminum oxide, calcium borate, titanium oxide, zinc oxide, arsenic acid, antimony oxide, antimony and metallic silver.
Gray - soluble salts of platinum, strontium, barium, palladium, strontium, barium, strontium ash and antimony trioxide.
Ink color - a mixture of iron oxide, chromium, cobalt, manganese, nickel, etc., pyrolusite, antimony trioxide, and the like.
Yellow - titanium oxide, rutile, barium stannate, chromic acid, lead chromate, cadmium sulfide, gold sulfide, metal gold, etc.
Orange - rutile, iron titanate, basic lead chromate, chromite, uranium yellow and cadmium sulfide.
Second, the method of ceramic decoration
Ceramic decoration can be used in several ways: coloring of slab, glaze coloring, underglaze coloring and glaze coloring. Colorants are divided into:
Sludge colorant: The colorant is mixed with the bad material to be fired. Therefore, such colorants are required to be processed separately for the blank, and no reaction can occur;
Glaze colorant: used to decorate dry billets, burnt billets or white porcelain after firing, apply glaze on it and then glaze. It is required not to react with the glaze at the normal firing temperature, and at the same time, it must not flow or the pattern is blurred;
Glaze coloring agent: used for decorative surface decoration of glaze after burning, it is required to adhere to the glaze surface at a relatively low firing temperature (700~900 °C), and can not penetrate into the glaze and flow.
Third, the raw material composition of ceramic glaze
The raw materials of enamel contain three components: alkaline, acidic and neutral. The alkaline component is a flux, such as an alkali metal, an alkaline earth metal, a zinc oxide, and a plurality of colored oxides or chromophore groups; the neutral component is an amphoteric oxide, the main body is alumina, and sometimes iron oxide and manganese oxide are also listed. Into this component; representative oxides in the acidic component are silicon oxide, phosphoric acid, zirconia, etc.
Fourth, the purpose of ceramic glazing
1) Make the blank impervious to liquids and gases
2) Covering the defects on the surface of the blank to cover the surface; improving the surface smoothness of the product to facilitate various finishing of the surface, and also improving the strength and aesthetics of the vessel.
3) Prevent the body from being stained. After glazing, it is easy to wash even if it is stained.
4) Acting with the green body to make the glaze and the green tire integral.
Fifth, Indirect ceramic decoration process
The indirect ceramic decoration process is divided into two processes: ceramic glaze applique and ceramic glaze applique.
Sixth, indirect method (printing method) method for making ceramic decal paper
There are three printing methods for making ceramic decals, namely, hand-engraved copper gravure gravure ceramic decals, offset large-film decals and screen-printed decals.
Seven, the raw material composition of the ceramic body
Raw materials for ceramic green bodies are mainly feldspar, quartz, kaolin and the like.
Eight, ceramic glaze decals are divided into classes according to the decal process
The ceramic glaze decals can be divided into two types: transfer decals and transfer decals.
Nine, the organic binder used in decoration, how to deal with baking flowers
Some organic adhesives should be used for ceramic decoration by decals, hand color, screen printing, etc. These adhesives should be gradually volatilized or burned at the beginning of the color firing, and must be completely eliminated before the flux is melted.