The production and manufacturing materials of iron boxes are all tinplate, such as tinplate boxes and tinplate cans. In the whole process of manufacturing iron boxes, we also have strict professional skills to prevent mistakes and omissions in the packaging of practical activities. Shandong iron box manufacturer
There are also some problems about the thickness of iron boxes. Generally, the wall thickness of iron boxes is about 0.23-0.25mm, but some poor manufacturers may cut corners and use thinner iron or unqualified iron materials to produce iron boxes, as well as the production of iron materials that have not passed the certification, so as to make profits, Therefore, at this time, some manufacturers need to provide some positive information such as iron certification.
Tinplate boxes must have good opacity, which is mainly for food, because many foods are stored in sealed storage and cannot be exposed to strong light. It is because food will deteriorate after the sun is reflected, and the nutrients contained in things themselves, such as protein and carbohydrates, are subject to disease transformation, It leads to the loss of nutrients and the destruction of food. In addition to the excellent opacity, the iron box must also have good sealing characteristics to prevent contact with gas during the whole process of transportation or storage, resulting in the oxidation of the air of the loaded food, and maybe bacteria, so as to ensure that the nutrients of the food are well stored and not easy to mildew.