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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.

Storage conditions for aerosol can products: 1. Storage temperature 2. Ventilation of the storage space 3. Prevent physical damage to the can 4. Keep away from sources of fire and heat 5. Prevent leakage and spread 6. Store aerosol cans with the valve and nozzle facing upwards

Rust-prone metal packaging cans: 1. Ordinary iron cans 2. Carbon steel cans Rust-resistant metal packaging cans: 1. Aluminum cans 2. Stainless steel cans 3. High-quality tinplate cans

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.

The protective effect of the tin layer is limited, especially when storing acidic foods, where there is a risk of tin corrosion. Therefore, during the production process, a protective coating or lining is often added to the inner surface of tinplate cans to further prevent direct contact between food and metal.

Tinplate packaging cans are widely used for beverages and liquid foods, especially products that require a good seal, such as carbonated beverages and beer. Tinplate packaging cans are not suitable for packaging foods with high acidity or high salt content, such as ketchup, fruit vinegar, and preserved foods.

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.

Step 1: Confirm that the can is completely empty. · Press the nozzle until the last drop is released. · Invert the nozzle to confirm that no gas or liquid is ejected. · If a pressurized propellant (such as butane) is present, handle with caution and avoid open flames. Step 2: Label or perforate the can (if permitted). Step 3: Dispose of the can in a metal recycling bin.

Tinplate itself is one of the top choices for food-grade packaging materials. 1. It's made from a low-carbon steel base plate electroplated with a tin layer, which effectively prevents rust from coming into contact with food. 2. If combined with a food-grade coating (such as epoxy phenolic or polyester coating), its safety fully meets international standards.

A standard three-piece tinplate aerosol can withstand pressures of 12-18 bar (176-260 psi), meeting the international DOT 2Q (180 psi burst pressure) standard. The reinforced design of the cone and dome directly determines whether the can can withstand the expansion pressures experienced during daily transportation, storage, and even high-temperature environments.