Hazards of porcelain dinnerware
Writer： admin Time：2022-06-22 20:00:50 Browse：136℃
The brighter the color of porcelain dinnerware, the more likely it is that heavy metals exceed the standard. The International Food Packaging Association today issued a consumer warning to remind consumers not to choose porcelain dinnerware decorated with overglaze colors.
Tableware that looks bright and beautiful is prone to excessive heavy metals if the process is not qualified. The production methods of porcelain dinnerware are divided into overglaze color, underglaze color and underglaze color. Those that feel concave and convex are called overglaze colors; The surface is smooth, and there is no obvious concave convex feeling by hand; Underglaze color refers to the process of painting and then glazing and firing, so it is called underglaze color.
The main harm in porcelain dinnerware comes from the heavy metals in it. These heavy metals come from the pigments on the glaze. In the process of ceramic production, adding lead to the glaze and adding lead and cadmium to the pigments can make the glaze uniform and bright. Some enterprises' production processes do not control lead and cadmium enough, which is easy to lead to excessive lead and cadmium. Consumers can always see brightly colored porcelain dinnerware with gold and silver edges when buying. In fact, these gold and silver edges are heavy metals such as lead, chromium, mercury and radium.
Do not choose porcelain dinnerware decorated with overglaze color, especially those with color decoration on the contact surface with food. If the glaze can be scraped off with nails, it is likely to be a poor quality product with excessive heavy metals. Therefore, white porcelain tableware should be selected as much as possible. The porcelain dinnerware bought back should be boiled in boiling water for 5 minutes or soaked in vinegar for 2 to 3 hours, which can remove most of the toxic substances and reduce the potential harm of ceramics to the human body.