Okay kiddo, so have you ever squeezed a sponge to get all the water out? Well, a fiber squeezer kind of works like that but with really tiny and thin little fibers instead of a sponge.
Fibers are like tiny threads that can be woven together to make all kinds of things like clothes or blankets. But sometimes, those fibers can get all tangled up and not lay flat. This can make things like fabric or paper not very smooth or strong.
So what a fiber squeezer does is it takes those tangled fibers and squeezes them together really tight with a machine. This makes the fibers straighten out and lay flat, which makes the fabric or paper smoother and stronger.
It's kind of like ironing your clothes, but instead of using heat, the fiber squeezer uses pressure to make the fibers flat and smooth!