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One of the common tinplate coated problems: pinholes Pinholes are an extremely common problem in the coating process. The Pinholes not only affects the appearance of product, but also affect the resistance to sterilization for beverage cans and other sterilization cans.

The fire- fighting exercises were scheduled to be held at 08:00 in the morning on December 24, 2020. The company's office staff and some tinplate printing and tinplate coating staff in the workshop actively participated and achieved good results.

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 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.

The metal material of the three-piece tin body is tinplate. The metal packaging material for the top and bottom covers can be tinplate, chrome-plated iron, and aluminum. In addition to aluminum, it will not rust. Tinplate and chrome will rust when exposed to wet environments. The use can isolate the contact between metal materials and the outside world, avoid abrasion of the metal substrate, and prevent the corrosion of the substrate by the corrosion factors in the food.

whether the viscosity of the coating is too high or too low will affect the quality of the coating, and the control of the viscosity of the coating is mainly achieved by adding a diluent. At the same time, changes in the ambient temperature will also cause the viscosity of the coating to change, and the viscosity will decrease as the temperature increases.

Coatings are mainly composed of film-forming substances, pigments, driers, auxiliaries, solvents, etc., and can be divided into three types of coatings: inner coating, outer coating and varnish from the coating method and function. It protects the ink layer and increases the brightness of the image to make the product have a good metallic color. At the same time, coatings such as food cans can effectively prevent the contents from being chemically and biologically contaminated, reduce the possibility of leaking the cans, protect the original flavor and color of food, extend the storage time, and make the contents easy to pour out of the containers.