Why Milk Jugs Have That Small Dent — And What It’s Designed to Do
Another benefit of the dent is that it supports more sustainable packaging. Manufacturers constantly look for ways to use fewer raw materials while still producing containers that are strong enough for everyday use. The curved shape of the indentation adds structural strength without requiring thicker plastic. Similar principles are used in bridges, domes, and other engineered structures, where carefully designed curves provide additional stability. Because less plastic is needed, manufacturers can reduce production costs while also lowering the amount of material that eventually enters the waste stream. This contributes to more efficient packaging and helps reduce the environmental impact associated with disposable containers.
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