Industry news

Metal can printing refers to the process of printing patterns, texts, logos, and other information on metal cans or metal materials. Unlike the printing of other packaging materials such as paper and plastic, metal can printing requires different technical processes and inks due to the particularity of its substrate to ensure the clarity, durability, and beauty of the printing effect.

Combined with the analysis in the previous article, it can be seen that the production of metal cans does rely mainly on tinplate plate. Whether from the mechanical properties, chemical stability of the material, or from its anti-corrosion and decorative characteristics, tinplate plate is an ideal choice for making metal cans.

Tinplate packaging cans can effectively isolate air, moisture, light and harmful substances, and prevent oxygen from entering the can. Oxygen is the main factor causing coffee oxidation and flavor loss, and being able to prevent the entry of oxygen directly affects the shelf life of coffee.

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.

The top of aerosol cans is called the "valve system", which is one of the most important parts of the entire aerosol cans. The valve system not only plays a sealing role, but also directly determines the way and dosage of the aerosol cans spraying contents.

The melting point of tin is relatively low, only about 232°C. When the temperature reaches or exceeds this level, the tin layer on the surface of tinplate sheet will undergo obvious physical changes and may even melt. This phenomenon makes tinplate sheet face greater limitations in high temperature applications.

Compared with paper packaging, tinplate packaging has superior hardness and durability. In food packaging that needs to be stored for a long time, tinplate's ability to resist compression and mechanical damage is particularly outstanding.

Many foods (such as canned food, juice, dairy products, etc.) contain more sensitive ingredients, such as vitamins, fats, etc. These ingredients are easily damaged by oxygen and ultraviolet rays. Therefore, metal tin packaging cans need to have anti-oxidation and anti-ultraviolet functions.

Many tinplate aerosol cans manufacturers have taken waste gas treatment measures during the production process. For example, volatile organic compound (VOCs) recovery devices and purification equipment are installed to treat or recycle the emitted harmful gases to reduce pollution to the atmosphere.

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