Tinplate cans typically have a smooth surface with a metallic sheen. This is because the tin coating itself creates a silvery-white reflective effect, while the coating and printing also contribute to the can's glossy appearance.
Tinplate cans offer excellent sealing properties. Sealed with a roll-to-seal method, they prevent air from easily entering. Their seal not only blocks air but also effectively prevents moisture from entering, making them particularly suitable for coffee products that require dry storage.
The recycling process for tinplate cans is relatively simple, and the recycling rate is very high. Recycled tinplate cans are first cleaned and treated to remove impurities. The metal is then melted to extract the iron and tin. These extracted metals can be reused in the manufacture of new metal products.
The main component of tin plate cans is steel, and the surface plating is pure tin. Tin is the preferred material for plating because of its corrosion resistance. Compared with steel, tin can effectively resist the erosion of moisture, oxygen, and acidic substances, prevent the can body from rusting, and thus protect the safety of the contents.
1. Why is the top of tin plate cans called "can lid"?
The top of tin plate cans is usually called "can lid" or "lid", which is used to close the can body and isolate the internal contents from the outside world. Depending on the purpose, the tin plate cans lid will adopt different designs.
Generally speaking, tinplate cans have a long shelf life, usually more than two years or even longer, but the specific period still depends on the use environment of the can. If tin plate cans are placed in a humid, highly acidic or alkaline environment, the tin coating may be affected, thus shortening the overall shelf life of the can.
As one of the choices for food packaging, tin plate cans have many advantages, one of the important reasons is the extension of product shelf life. Tin packaging can effectively block the intrusion of light, moisture and oxygen, thereby reducing the impact on product quality.
The chemical properties of tin are relatively stable, and it has strong resistance to chemicals such as acids, alkalis, and salts, which means that it is not easy to react with other substances. Unlike iron, tin is not easy to rust, and it has high safety in food contact and does not produce substances harmful to the human body.
Depending on the different ink types, coating protection and storage conditions, the service life of the LOGO on the tin plate cans under normal conditions will vary. Generally, a properly protected tin plate cans LOGO can remain non-fading for 3 to 5 years in a cool and dry environment indoors.
For the question of "Is tinplate packaging can flammable?", we can get the answer from the properties of its main materials. Generally speaking, metal materials are not flammable because they do not contain flammable components such as hydrocarbons
