Cans cover corrosion resistance has been an issue of concern to the people, Dongguan Suno Packing real promise packaging - specializing in the production of aluminum easy-open lid, the lid of iron EOE and beverage manufacturer, you cover a brief introduction about the corrosion of cans .
(1) The surface corrosion plain canned oranges, pineapple, canned food, use plain iron tank to keep the flavor and color of food, most of these acidic foods, canned requires a high corrosion resistance. The main factors associated with the corrosion of tin plate for cans materials, types of contents, canning conditions, storage conditions etc..

  See from tin plate material, in the acidic environment of oxygen, and the tin was first dissolved corrosion protection of iron. In order to improve the corrosion resistant tin plate, requiring strict production control, with high corrosion resistance plate (ie, K board)

(2) coating the corrosion resistance of the tank in order to reduce costs and save valuable tin resources, it is no longer used to increase the corrosion resistance of the tin plating layer to improve the approach to be painted but with a lower layer to improve the tin cans of life; paint can prevent sulfur protein foods produce Sulphur changed; want to flavor drinks and beer for the presence of small amounts of dissolved metals are very sensitive, so the use of paint cans.

  Must ensure coating integrity, no defects, no longer relying on dissolution of tin cans to prevent corrosion of the substrate, the paint has become the first line of defense. Test was done: coating defects than does the shelf life of canned paint is much shorter, and therefore the coating film to prevent scratches, damage to the flange portion, resulting in the lid or in the coating falling off punching . To ensure the quality of the coating, and sometimes several times painting; For a strongly acidic beverages, must be within the coating after canning to prevent corrosion and soon even the drain tank.