Industry news

Epoxy resin coating can not only prevent metal from direct contact with food, avoid metal corrosion or contamination of food, but also extend the shelf life of food. Therefore, the inner wall coating of many food and beverage cans contains BPA.

It does not react like other metals when it encounters water or acid, and can provide stronger corrosion resistance for packaging cans. At the same time, the surface of tin is smooth, odorless, and non-toxic, and will not affect the taste and quality of the food inside the package.

Steps for electrolyzing tinplate: 1. Prepare electrolyte 2. Assemble electrolytic cell and electrodes 3. Connect power and start electrolysis 4. Monitor the electrolysis process 5. Complete electrolysis and recover tin 6. Clean electrodes and electrolytic cell Key tools and materials required for electrolytic tinplate: 1. Power supply unit 2. Electrolytic cell 3. Electrode 4. Electrolyte 5. Temperature control device 6. Stirring device 7. Personal protective equipment

Tinplate is a tin-plated steel. It is made of cold-rolled low-carbon steel plates or steel strips through a precise process. Five common applications of tinplate: 1. Food packaging industry 2. Chemical product packaging 3. Daily necessities and cosmetics packaging 4. Toys and crafts 5. Electronic product housing

The production process of tinplate sheet includes raw material preparation, cold rolling, pickling, annealing, electroplating tinning and post-processing. These links cooperate with each other to ensure the quality and performance of the final product.

Process of tinplate sheet tinning: 1. Pretreatment of steel sheet ● Degreasing treatment ● Pickling ● Surface activation 2. Process of electroplating tin ● Setting of electrolytic cell ● Applying current ● Control of coating thickness 3. Post-treatment process ● Passivation treatment ● Oiling

Internationally, the thickness of tinplate is usually between 0.13mm and 0.50mm, but the thickness of tinplate used for food packaging is relatively thin, usually concentrated in the range of 0.13mm to 0.30mm.

The answer is yes. Ink is not only an indispensable material in the printing process, but also the core to ensure printing quality and visual effects. Tinplate printing generally adopts lithographic printing process, which forms rich patterns, colors and texts by transferring ink to the tinplate surface.

Key factors for selecting ink suitable for tinplate printing: 1. Adhesion of ink 2. Heat resistance of ink 3. Chemical resistance of ink 4. Gloss and color performance of ink 5. Drying speed of ink 6. Environmental protection and safety of ink

The production of cookie jars involves multiple links, including raw material selection, molding processing, surface treatment and assembly and other complex steps. Among them, tinplate sheets have become the preferred material for making cookie jars due to their good corrosion resistance, plasticity and excellent printing performance.