GLAZE safety buy ceramic tableware

Published: 16 May 2009 19:52:01

Glaze firing and application in our country has a long history, and its shape varied, colorful, cool feel with smooth, easy washing, loved by the people. Never dreamed that the selection and use of ceramic tableware great learning, once the negligence, bad day that day, every meal must use the "guy-type" will be the same as trace poisons gradually affect our health.

Ceramic tableware production methods are divided into color glaze, underglazed color glazethree.

Color ceramic glaze made of flower paper with pigment paste in glazed or painted directly on the paint surface, then baked at low temperature by burning, burning because of grilled glaze layer up to a temperature of less than the degree of melting, so should not face flower Shen into the glaze. Hand-to-color glaze ceramics, felt flower has a clearsurface;

Ceramic glaze grilledtemperature can melt glaze, pigments can sink into the glaze, the glaze layer after cooling coverage, products a smooth surface, no significanttouch;

Underglazed full color ceramic ornaments in porcelain color on the blanks, after glazing a kiln at high temperature, was flower glaze layer surface coverage, looks bright, flat, smooth feel.

We highlighted the main heavy metal toxins from the paint color glaze. Experts point out that color ceramic glaze of lead compounds can be acid dialysis solution, when the screen when they are in contact with food, lead in food may be organic acid solution by dialysis. Of course, if the design is reasonable color glaze, barbecue process properly, can be avoided super lead. Ceramic products containing harmful ingredients if at 600 ℃ ~ 800 ℃ high temperature may spill, so people in the use of microwave ovens, it is best to Add a bowl of white births or underglazed color bowl. In contrast, the current market underglazed color, glaze and whiteunleaded, is safer.

This situation has arisen because some small ceramics factory in order to reduce costs, the procurement of lead and cadmium content was high, the performance of unstable low-cost raw materials. In the production process, because of too large decorative, DECORATED temperature or not enough technology workers mishandling and other factors, will cause leaching of lead in ceramic products do not meet the required standards. Some individuals, many private enterprises for profit, can shorten the time DECORATED DECORATED or lower temperature, even the use of completely relying on experienced workers DECORATED old furnace, has seriously hampered the quality of ceramic tableware. Can not be optimistic about more than just these, the National Quality Center, ceramics for daily use survey results show that the ceramics for daily use eating utensils of China's market mainstream products are lower-grade products, the middle-grade ceramic tableware in the situation of poor sales.

Experts warned consumers unaware that they have bought home tableware are not safe, can be used for the first time before the disinfection treatment, with five minutes to open water or white vinegar soaked 12 hours, it can be dissolved harmful substances inside out.

Shopping tips:

● in the store to determine the grade of purchase, and then pick your favorite color, then to be determined breeds, look at whether the Zhou Zheng shape, and then pieces of an outside view, it has damaged, spots, air bubbles, is it smooth.

● small objects with your fingers or knock on a few softly, the sound crisp, good quality notes; such as boring or hoarse voice, it is poor quality.

● whether the watch surface decorative flower color harmony, and the selection has gold, silver decorative porcelain, the hand would also like to rub one rub, do not fade is the top grade.

● When buying sets of ceramics depends on each of the glaze, screen, shiny, pattern is consistent symmetry, coordination.

● eggshell ceramics in the sun or take care of lighting, there must be transparent, both thin and light, and thickness uniformity.

● glaze color glazed ceramics as bright screen, the touch less smooth, the edge of the screen is not up to standard has raised a sense of Products.

● microwave ovens must be chosen with porcelain marked "microwave oven with" the word products, so as to avoid cracks happen in use.