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Temperature is one of the important factors affecting metal migration. The tin in tinplate cans is relatively stable at room temperature, but when the temperature is above 100°C, the activity of tin may increase, especially under acidic conditions, heating may cause higher tin migration.

Tinplate is the most common material in the current production of candy cans. Tinplate is essentially a tin-plated thin steel plate with good oxidation resistance and corrosion resistance. Because the surface of tinplate is coated with a layer of tin, it can effectively isolate air and moisture to prevent candy from getting damp and deteriorating.

In order to ensure the tin plating quality of tinplate cans, the tin plating time is generally between 10 and 30 seconds. Short-term electroplating can obtain a uniform coating, while long-term electroplating may cause the coating to be too thick and affect the adhesion of the tin layer.

Food packaging is one of the most common application areas of tinplate cans, especially for foods that need to be stored for a long time and maintain quality and flavor. Common food products include: ·Canned food ·Candy and snacks ·Tea and coffee ·Infant food and milk powder

The amount of tin used in a standard tinplate can depends on its volume and the thickness of the coating. Typically, about 1 to 2 grams of tin are required per square meter of tinplate, which means that an ordinary food can does not require much tin, but its role is irreplaceable.

Food and beverage liquid products Food and beverage liquid products are the most common application areas of tinplate can packaging. Liquid products such as juice, milk, carbonated beverages, and edible oil can be better protected and preserved when using tinplate can packaging.

Common coating types for tinplate cans: 1. Anticorrosion coating 1.1 Epoxy coating 1.2 Polyester coating 1.3 Acrylic coating 2. Decorative coating 2.1 Paint coating 2.2 Printing coating 2.3 Varnish coating 3. Functional coating 3.1 Antibacterial coating 3.2 Anti-ultraviolet coating 3.3 Waterproof coating

There are many types of anti-corrosion coatings for printing tinplate cans on the market. Common types include epoxy resin coatings, polyester coatings, polyurethane coatings, and fluorinated coatings. Different types of coatings have certain differences in anti-corrosion performance, high temperature resistance, and chemical resistance.

Generally speaking, tinplate cans have a long shelf life, usually more than two years or even longer, but the specific period still depends on the use environment of the can. If tin plate cans are placed in a humid, highly acidic or alkaline environment, the tin coating may be affected, thus shortening the overall shelf life of the can.

When choosing a suitable tinplate can packaging, the first factor to consider is the nature of the product. Different types of products have different requirements for packaging. Taking food as an example, the main goal of food packaging is to keep food fresh, avoid external contamination, and extend the shelf life.