Coating of easy open end

There are two types of coatings for easy-open metal lids according to their uses. Generally, they can be divided into two types: internal and external. The external coatings include primer coatings, white coatings, colored inks, and varnishes. What are the types of internal paint classification? According to the different properties of the food inside, the inner coating can be divided into the following types
1. Fruit type paint. It is used for printing metal cans containing higher pigments, non-sulfur, jam-type plants, and low-acid products. This type of coating is mainly oleoresin type binder.
2. Grain-type paint. It is used for printing metal cans containing sulfur-containing food such as corn and beans. Because sulfur can form black iron sulfide with iron, this type of coating is also mainly based on oleoresin type binder.
3. Meat type coating. It is used for printing metal cans containing meat or fish. Due to the need to prevent corrosion, this type of coating must be highly cross-linked and resistant to oil, grease and sulfide. This type of coating is made of phenolic and epoxy-phenolic binders. host.
4. General paint. It is composed of resin type binder and some phenolic resin. Because internal coatings are in direct contact with food, they must be non-toxic, odorless, and cannot chemically react with the food.