How are sponges made?

The cellulose used for sponges arrives at the sponge factory in large, stiff sheets. Workers take the sheets and soak them in a vat of water mixed with MORE?

Tags: vat,  cellulose,  sponge,  sheets,  water 
Wednesday, February 01 2012
Source: http://www.madehow.com/Volume-5/Sponge.html