To prevent rust on milk powder cans during manufacturing, several measures can be employed:
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Material Selection:
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Use materials that are inherently resistant to rust, such as stainless steel or aluminum. These materials naturally have a high corrosion resistance.
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Coating and Lining:
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Electroplating: Apply a layer of zinc (galvanizing) or other metals like tin, which acts as a sacrificial anode if the can gets scratched.
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Powder Coating: This involves applying a dry powder which is then cured into a protective layer.
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Polymer Linings: Use of food-safe polymers inside the can to prevent direct contact between the metal and the milk powder, which could lead to corrosion.
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Surface Treatments:
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Anodizing: For aluminum cans, anodizing can create a durable oxide layer on the surface that prevents rust.
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Passivation: For stainless steel, passivation removes free iron from the surface, enhancing corrosion resistance.
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Sealing Techniques:
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Ensure the seams of the can are well-sealed to prevent moisture ingress, which is a primary cause of rust. This can include double-seaming or using advanced sealing technologies.
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Environmental Control:
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Manufacturing in a controlled environment with low humidity can reduce the likelihood of oxidation.
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Also, storing the cans in a dry environment before use can prevent rust from forming during storage.
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Inhibitors and Additives:
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Incorporate rust inhibitors in the materials used or in the manufacturing process. These chemicals can form protective films or layers on the metal surfaces.
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Regular Maintenance and Inspection:
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Even after manufacturing, regular checks for any signs of rust or damage can help in early intervention, maintaining the integrity of the cans.
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Powder coating system is one of the powder coating products launched by Changtai Company.
This machine is dedicated to the spray coating technology of tank welds of can manufacturers. Changtai adopts advanced powder coating technology, which makes the machine novel structure, high system reliability, easy operation, wide applicability and high performance-price ratio. And the use of reliable control components, and touch control terminal and other components, making the system more stable and reliable.
The powder coating machine uses static electricity to spray plastic powder on the weld of the tank body, and the solid powder is melted and dried by heating in the oven to form a layer of plastic protective film (polyester or epoxy resin) on the weld. Because the powder can completely and evenly cover the burrs and high and low surfaces on the weld according to the specific shape of the weld by the principle of electrostatic adsorption during spraying,
it can well protect the weld from the corrosion of the contents; At the same time, because the plastic powder has high corrosion resistance to various chemical solvents and sulfur, acid and high protein in food, the powder spraying is suitable for a variety of different contents; And because the excess powder after powder spraying adopts the principle of recycling and reuse, the powder utilization rate is high, and it is the most ideal choice for weld protection at present.
Powder coating machine is an important part of the three-piece can production line, which is highly praised by customers at home and abroad in the market and is an excellent can making equipment. Chengdu Changtai is committed to providing customers with the best quality can making equipment and developing the best solution.
For any can making equipment and metal packing solutions,Contact us:
NEO@ctcanmachine.com
TEL&Whatsapp+86 138 0801 1206
Work video of Outer seaming coating machine #metalpackaging #canmaker #canmaking
Post time: Jan-25-2025