Quality and safety control of food packaging metal containers (2)

September 21, 2022

Quality and safety control of food Packaging Metal Containers (2)

Xin Qiaojuan

Second, coated iron and printed iron food Metal Packaging

In the past decade, due to the harsh requirements of environmental protection and the growing shortage of resources, the global steel plate manufacturing industry and metal packaging manufacturing industry are undergoing revolutionary major changes. Coated iron, coated aluminum, secondary cold-rolled sheet, stamping tank, punched and shaped cans and easy-to-tear and 200-liter steel drum plates are slowly becoming the mainstream of metal packaging manufacturing in developed countries. Only in this way can the metal packaging manufacturing enterprises be completely out of the paints produced in the production, and the packaging containers are likely to be free from secondary pollution.

(1) 200-liter steel drum and Tinplate Tin Can coating

1, 200 liters printed steel drum

It is a matter of recent printing or coating of 200 liter steel drums. It is also a product of people's attention to food hygiene and environmental protection awareness. However, due to the large printing area, the coating requirements are required. High, so there are very few 200-liter steel drums produced by printing and coating iron in the world. However, we have the world's second steel drum printing and coating production line, which provides a prerequisite for food safety and clean production.

200 litre steel drum

200 liter printing steel drum

2, Tinplate tin can coating can

The food metal cans produced by tinplate are divided into two-piece cans and three-piece cans. Whether it is a two-piece can or a three-piece can, a few years ago, the tin can was produced by printing tinplate (packaging paint iron) of 0.16 mm or more. The scale can manufacturing enterprises have introduced advanced printing tin can equipment, with a production capacity of 1000-1200 cans/min. Due to the high degree of automation, there is no manual turnover in the production process, no landing, and the production workshop is a clean production area, so the quality and safety of the products can be guaranteed.

Modern canning workshop

(2) Covered iron metal packaging

The coated iron refers to the plastic film being laminated on the surface of the metal substrate by hot melt or bonding to improve the corrosion resistance of the metal substrate and the metal container.

The coated iron was first developed and put into production by Japan Toyo Can Co., Ltd., which Japan called "the ultimate can", which means unsurpassed products. China's metal packaging industry has repeatedly negotiated with Japan to introduce matters, but the other side imposed a technical blockade on China through harsh negotiation conditions. Faced with this unique resource that cannot be copied, experts, scholars and entrepreneurs in the canning industry in China jointly developed this technology and successfully applied it to the Metal Can industry. For good products and technologies, our people are not far behind. Based on the successful experience of can coating, we have developed a 200-liter steel drum coated iron production line in China. The width of the laminating equipment can meet the demand of 200 liter steel drum. There are many, most of them used in other industries such as building materials. At present, we have successfully tried the steel drum industry. The first batch of steel drum coated iron has completed the trial production of steel drums. The next step is to promote the application, because he completely overturned the steel drums we have produced for centuries. Processing technology and technology are a qualitative leap and a good opportunity for the steel barrel industry to integrate. Because the steel drum is produced by printing iron or coated iron, there is no painting process in the production process, and the pollution source is fundamentally eliminated. However, there are new requirements for the processing of steel drums. To change the current horizontal processing equipment of more than 95% as a vertical equipment, in order to reduce the scratch on the surface, the product equipment is rotated at the same time as a process scheme in which only the equipment rotates and the product does not move. Therefore, this is a long-term green project that benefits the country and the people. It requires constant efforts and innovation from our barrel makers.