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The factory process behind metal lunch boxes often involved a series of intricate steps. First, the raw materials were sourced and cut into the appropriate sizes. Next, the metal sheets underwent printing, where vibrant colors were applied to create eye-catching designs. The pieces were then shaped, bent, and fused together, creating a sturdy construction that could withstand the rigors of daily use. Finally, a protective coating was applied to guard against rust, ensuring these lunch boxes would endure for years.
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These cookies are then subjected to various processes, such as stamping and welding, to create the final can structure. The lids, or top cookies, are equipped with overhangs designed for easy sealing, often using a method known as double seaming. This ensures that the cans not only retain their contents but also withstand the rigors of shipping and storage.
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Once the cans are shaped and coated, they move to the printing station. Here, vibrant designs and informative labels are printed onto the exterior. Customization has become a popular trend, allowing coffee roasters and brands to showcase their unique identities. The printing process can include everything from intricate artwork to playful slogans, transforming a simple can into a canvas for creativity.
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