Product News

One of the main purposes of applying coatings on the inner wall of food cans is to prevent large amounts of tin from dissolving.

Canned containers made of tinplate usually need to be coated with a coating on the inner surface, the purpose of which is to prevent the chemical interaction between the contents of the can and the can wall and the contamination of the contents by trace amounts of harmful substances, and to protect the freshness of the contents As well as the original flavor, the starting food can be stored, transported and sold for a long time without affecting its edible value.

The performance of the tinplate coating should not only have corrosion resistance, but also have good adhesion, flexibility, non-toxic and tasteless. The tinplate coating must be able to withstand the heating during high-frequency resistance welding and high-pressure cooking at 121 ° C without loss of performance.

Tinplate has a long history of becoming a leader in food can packaging materials, and its effectiveness should be largely attributed to the important protective effect of internal tinplate coatings.

The coating on the inner surface of the tinplate can is to use a roller coater to print a suitable coating on the smooth surface of the tinplate into a uniform and controllable thickness before the tinplate is cut into a can body blank.

The coating on the inner surface of the can is to use a roller coater to print a suitable coating on the smooth surface of the tinplate into a uniform and controllable thickness before the tinplate is cut into a can body blank. The coating machine can independently carry out coating operations through its own feeding device, or it can be matched with the iron printing machine to form a printing coating line.

tinplate printing ink has properties such as impact resistance, strong adhesion, heat resistance, light resistance, and good drying properties

In addition to the printing ability of normal printing inks, tinplate printing inks also have properties such as impact resistance, strong adhesion, and high temperature resistance

The composition of tinplate printing ink is similar to ordinary ink. It is mainly composed of pigments, binders, fillers and auxiliary agents. However, because the surface of tinplate is smooth and its absorption is poor, it must be different from ordinary offset printing inks. In addition to the printing ability of general offset printing inks, tinplate printing inks also have properties such as impact resistance, strong adhesion, heat resistance, light resistance, and cooking resistance.

Tinplate coil need to be coated with a certain gold lacquer coating on the inner surface, in order to prevent the chemical interaction between the filling in the tank and the tank wall and the contamination of the filler by trace elements, It's time to protect the quality of the filler. The packaged product can be stored, transported and sold for a long time without affecting the use value of the product.