Printing Principles of Iron Box Packaging

Iron box printing is the principle of offset printing, which utilizes the physical properties of water and ink repelling each other and uses printing pressure to transfer printed images and texts onto the iron box through rubber cloth. Due to the unique physical and chemical properties of tin boxes and the reprocessing performance of printed materials, their printing process is significantly different from ordinary offset printing. After completing all the color matching, a layer of glossy oil needs to be covered on the printing iron box to increase the glossiness of the printed surface, while also improving the surface hardness, making the printing ink layer have a certain degree of flexibility and corrosion resistance, so that beautiful and eye-catching iron box printing packaging can be produced.
Safety requirements for producing tin box packaging products:
Before producing tinplate boxes, they should be sprayed with mortar or bottomed with dry slag. There should be no accumulated water, damp debris, or flammable or explosive materials inside the boxes;
2. The iron box ear shaft should be tempered and its safety factor should not be less than 8.1;
If the wear of the iron box trunnion exceeds 10% of the original shaft diameter, it should be scrapped; A non-destructive inspection should be conducted on the ear shaft components once a year, and records should be kept.