404# 105mm Tinplate Bottom Cover: Reliable Sealing for Milk Powder Cans

Standard 105mm 404# Size: Perfect Match for Common Milk Powder Tins

• Seamless Production Compatibility: The uniform 105mm size works smoothly with fully automatic can sealing equipment, enabling stable feeding, accurate positioning and firm sealing. It cuts down on defective products caused by mismatched parts, effectively improving overall packaging efficiency.
• Wide Application Range: Suitable for infant formula, adult milk powder, camel milk powder, goat milk powder and other powdered dairy products. No custom mold adjustment is required, helping you lower production costs and shorten order lead times.
• Stable Structural Fit: The crimped edge design fits tightly with the can body, leaving no gaps, warping or looseness after sealing. This secure fit boosts the overall sturdiness of milk powder tins, keeping the structure intact during handling and storage.

Food-Grade Tinplate Material: Safe & Trustworthy for Milk Powder

• Anti-Rust & Anti-Oxidation: The tinplate coating forms a reliable barrier against air and moisture, preventing rust and corrosion, and avoiding metal ion migration that would affect milk powder quality, keeping the inside of the can clean and hygienic.
• Non-Toxic & Odorless: Adopting food-safe epoxy resin inner coating, it releases no harmful substances and won’t react with milk powder ingredients, preserving the original taste and nutritional purity of milk powder without odor contamination.
• Full Compliance & Certifiable: All batches follow strict raw material and production standards, supporting third-party testing and certification. This simplifies customs clearance and market access for milk powder products, building trust among consumers and distributors.

Excellent Sealing & Protection: Lock Freshness & Extend Shelf Life

• Tight Leakproof Seal: The precision-processed bottom cover forms an airtight bond with the can body, blocking external oxygen, moisture, dust and bacteria. This keeps milk powder from caking and oxidizing, maintaining its fresh texture for longer.
• Light-Blocking Nutrient Protection: Tinplate naturally blocks light, shielding milk powder from UV rays to prevent nutrient loss, and retaining key proteins, vitamins and other nutrients to the fullest.
• Drop & Pressure Resistant: Tinplate balances rigidity and toughness, making this 105mm bottom cover highly resistant to impact and pressure. It won’t deform or break easily during transportation and handling, protecting can integrity and avoiding product damage from packaging failures.

Flexible Processing: Easy Coding & Brand Customization

• Support for Traceability Coding: Available in double-sided bright tin and blue-coated tin styles, compatible with both ink coding and laser coding. You can clearly print production dates, batch numbers and shelf life information, with clear, wear-resistant marks that meet food traceability requirements.
• Brand Customization Friendly: The surface can be printed, coated or treated with other finishes to add brand logos, anti-counterfeiting marks or product details, enhancing brand recognition and adding value to milk powder packaging.
• High-Temperature Sterilization Resistant: It can withstand high-temperature sterilization, suitable for aseptic milk powder packaging. The bottom cover maintains its shape and sealing performance under high heat, with no impact on product safety.

Cost-Effective & Eco-Friendly: Smart Choice for Long-Term Production

• Durable & Low-Waste: Tinplate is a long-lasting, stable material, so this bottom cover resists aging and damage, reducing packaging part loss and cutting long-term operating costs.
• 100% Recyclable & Green: Tinplate is a highly recyclable metal, and waste 404# bottom covers can be recycled and reused easily. This aligns with global green packaging trends, reduces environmental impact and improves your brand’s sustainable image.
• Stable Bulk Supply: As a standardized product, it has a mature production process, ensuring consistent batch quality and short delivery times, easily meeting your long-term, large-scale packaging needs.

Final Thoughts