Whole eating from a plastic container that had 4 different pockets in it, I noticed that the liquid food tends to enter the grooves in the container. It got me thinking what is the purpose of these and why can’t there be containers that have a smooth interior?
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its to give it rigidity without adding thickness
take a piece of paper, like _______________, hold it horizontally and try to bend it… it’s easy to bend right? you can literally fold it with very little effort
now fold it in half length wise (or many times in opposite directions, making the paper wavy), like vvvvvvvvvvvvvv, then try to bend it again, it will be harder to bend perpendicular to the direction of the folds
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