system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are some paper products made to be "softer" than other?
gpt
For example,  with toilet paper, the sheet is adhered to one large steel cylinder to dry and is then scraped (or “creped” off) by a metal blade. “Creping” imparts flexibility and stretch into the sheet, while lowering the strength and density, resulting in soft tissue products. 

I've personally worked in a release paper mill where coating adherence is important.  So a sheet's porosity and denseness is much more important than how "fluffy" it is. 

It really boils down to what characteristics you want the paper to have. You can use different chemicals, compositions, refining techniques, weights, and drying to achieve different characteristics.