Why do plastic disposable containers have grooves and/or ridges in them?

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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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Anonymous 0 Comments

As others are saying, there are structural decisions, so you can make a stronger container with less material. HOWEVER, these types of container changes can also be a method of “shrinkflation”, ie selling less of the product for the same price.

When you have containers with “bumps” at the bottom, or “integrated handles” that squeeze the middle of the container, or “ridges” where none were needed before, it can be a way of making the container look the same size as before, for the same price, but putting 5% less product inside…and the consumer doesn’t realize.

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