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According to the International Energy Agency, the global steel industry accounts for approximately 8% of global industrial carbon emissions, making it the largest contributor to carbon emissions among all industries. Although tinplate sheet production may have slightly lower carbon emissions than conventional steel production, its overall carbon footprint remains relatively large.

Tinplate applications of varying thicknesses: 1. Thin Tinplate (0.13mm to 0.20mm) 1.1 Food and beverage cans 1.2 Biscuit boxes and candy packaging 1.3 Cosmetics and perfume containers 2. Medium Tinplate (0.21mm to 0.30mm) 2.1 Food cans 2.2 Paint cans and chemical packaging 2.3 Can caps and closures 3. Thick Tinplate (0.31mm to 0.50mm) 3.1 Large paint cans and chemical containers 3.2 Construction and decorative materials 3.3 Industrial packaging containers

Specifically, the tin plating process design has the following four functions: 1. Preventing oxidation and corrosion 2. Enhancing product safety 3. Maintaining product appearance and quality 4. Improving material processing performance

Offset printing is currently one of the most commonly used processes for tinplate printing. It primarily uses a rubber blanket to transfer the design onto the tinplate surface. Offset printing not only achieves high-resolution printing but also produces rich color gradations.

When tinplate sheet is heated above 231.9°C, the tin layer begins to melt, while the iron material inside remains solid. Therefore, the melting process of tinplate sheet occurs in stages. First, the tin layer melts, and then, at 1538°C, the iron substrate begins to melt.

As a steel-based material, tinplate sheet possesses the inherent strength and durability of steel. Compared to other packaging materials such as plastic and paper, tinplate sheet effectively protects canned foods from external physical impact or compression.

Tinplate sheet offset printing relies on inks, which differ significantly from those used in other types of printing, such as screen printing and gravure. Due to the unique demands of tinplate sheet offset printing, inks must not only ensure precise transfer, but also exhibit strong adhesion to metal surfaces and abrasion resistance.

Steps for printing patterns on tinplate sheets: Preparation: 1. Cleaning and degreasing 2. Primer coating 3. Drying treatment Selection of printing method: 1. Offset printing 2. Screen printing 3. Gravure printing 4. Flexographic printing Selection of ink: 1. Solvent-based ink 2. UV-curable (UV) ink 3. Water-based ink

Candy cans need to have a certain hardness to protect the food inside, which requires the can body to be sturdy and avoid deformation during transportation and storage. Tinplate sheet has such characteristics. Its core is steel, which gives the can body excellent pressure resistance and hardness.

Food packaging grade tinplate sheet is not easy to release harmful substances at room temperature, but whether it will release heavy metal elements such as lead and cadmium under high temperature conditions is worrying. High temperature may decompose the metal surface coating, resulting in food contamination.