WHAT IS A FRIT?
In simple words, frits are vitreous materials that result from a molten process at high temperature (1350º - 1550º) in a fusion furnace.
The melting falls in liquid state on a water receptacle that cools the mix, solidifying it with the appearance of tiny glass pieces.
What are ceramic frits made of?
The raw materials with which frits are made can be natural or synthetic products such as oxides, silicates, carbonates, aluminosilicates, borates, etc.. You can find the majority of the chemical elements in the compositions. The formulation of the compositions links these elements in a vitreous matrix, granting their stability and behaviour as an homogeneous solid.
Are they safe materials?
Even though frits contain chemical elements they should not be considered neither very toxic, nor toxic, or harmful products. The melting process makes the elements become completely inert, transforming the original mix in a glass, without risks for the human health or the environment*.
*Studies on frits made by the Jaume I University, Castellón, Spain.