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June 20, 2016 AT 7:00 am

The engineering of a disposable diaper

The surprisingly interesting engineering design behind disposable diapers by engineerguy on YouTube.

Bill reveals the stunning engineering underlying the design of a diaper. He describes the five layers of a diaper, including the superabsorbent polymer in the diaper’s core. He illustrates the action of this polymer with a stunning demonstration using a single bead of polymer: it soaks up enough water to grow from a diameter of 4 mm to nearly a half inch.


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