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Once the graphics are finalized, manufacturers move to the creation of the tin boxes themselves. The process involves cutting and shaping sheets of steel, which are coated with a layer of tin to prevent rusting and ensure durability. The pieces are then pressed into shape and assembled—usually featuring a hinged lid and a sturdy handle, reminiscent of the lunch boxes popularized in the mid-20th century.
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One of the primary reasons for the widespread use of nitrites in the food industry is their effectiveness as a preservative. By preventing the growth of bacteria, nitrites help extend the shelf life of products and reduce the risk of foodborne illnesses. Moreover, nitrite preservatives also act as antioxidants, which can help prevent rancidity and improve the overall quality of the meat.
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