Tinplate Cans Packaging Classifications
Common Classifications of Tinplate Cans Classified by usage:
1. Aerosol tin cans– These come in tinplate varieties. Based on shape, they are classified as:
(1) Straight aerosol tin cans (diameters at the top and bottom remain constant)
(2) Necked-in aerosol cans (diameters at the top and/or bottom are reduced). These are disposable metal containers for aerosol products. During use, the product is dispensed through a valve in a controlled spray pattern, driven by internal pressure. Key products include air fresheners, automotive care products, spray paints, insecticides, etc.
2. Chemical tin cans : These include square cans, round cans, and drum/pails. Capacities range from 0.5 to 20 liters. Specifications are below：
3. Milk powder cans: These come in specifications such as 301#,307#,401#,404#,502#,603#. High quality is required for these products. Generally, production must take place in sealed, dust-free workshops, often meeting Class 100,000 air purification standards. They must offer excellent sealing properties and comply with food hygiene standards. Key products include cans for chicken bouillon powder, milk powder, protein powder, cereal powder, coffee powder, etc.
4. Beverage cans: The term "three-piece can" refers to a container made from thin tinplate (or chrome-plated steel). These tin cans are used for filling non-carbonated beverages or food products and feature an easy-open lid; after sealing and sterilization, they meet sterility requirements. Common specifications for three-piece beverage cans include 206, 211, and 209; diameters include Φ52, Φ58, and Φ65, among others, with heights adjustable to customer requirements. The top lids are typically made of aluminum and feature a disposable easy-open design. Common products packaged in these cans include herbal teas, energy drinks, coffee, and "Eight-Treasure" porridge.
5. Miscellaneous Cans (Non-standard cans or gift tin cans): Primary products include tin boxes for mooncakes, candy tins, stationery cases, biscuit tins, CD cases, and liquor tins. Structurally, the bodies of these cans are usually formed via side-seaming (interlocking) or deep drawing, resulting in relatively lower airtightness.
Structural classifications include: welded cans, side-seamed (interlocked) cans, drawn cans, two-piece cans, and three-piece cans.
Shape classifications include: rectangular, square, triangular, octagonal, and oval tins, as well as heart-shaped, irregularly shaped, car-shaped, and book-shaped tins.
Advantages of Tinplate Cans Packaging
1. Excellent Formability: Compared to other packaging containers (such as plastic, glass, or paper), tinplate cans offer superior strength and rigidity, making them resistant to breakage. This allows for the stamping and forming of containers into a wide variety of shapes.
2. Superior Barrier Properties: Tinplate cans provide barrier properties—including gas, moisture, and light shielding—that surpass those of any other material. They excel at preserving aroma and, thanks to reliable sealing, offer excellent product protection.
3. Exquisite Appearance: Metal materials offer excellent printability, allowing for the easy application of custom colors, patterns, and product imagery. The resulting packaging is vibrant and eye-catching, serving as an excellent form of sales packaging.
4. Diverse Shapes: Tinplate cans can be manufactured in various shapes—such as square, oval, round, spherical, or irregular forms—to meet specific product needs. This variety not only satisfies packaging requirements but also adds visual interest, helping to boost sales.
5. Eco-friendliness: Tinplate is recyclable and offers high recovery value. After use, the cans can be repurposed (e.g., as storage boxes), aligning with environmental standards and future product development trends.