The Chinese papermakers made wooden frames and stretched a mesh/screen across them—they were 2-piece flat strainers called a deckle and mold. Think of two screen windows—one has a screen in it, the other is an empty frame. They dipped the deckle and mold into the slurry and pulled them up horizontally. The water drained through the mesh. They removed the mold to leave a square of slurry on top of the mesh, which got transferred onto a piece of felt. Multiple pieces of felt and slurry were stacked together as a post and pressed to dry flat. When the whole post was finally dry, the slurry was paper that they could pull off the felt.
The Chinese papermakers improved on the recipe by adding bleach to brighten the paper’s appearance and finishing the paper’s surface with sizing (starch at first, then in the 1400s they switched to animal glue) to make it smoother.
Hey, look! Georgia Tech has a Museum of Papermaking:
Watch a deckle and mold being made: https://www.youtube.com/watch?v=i_A9D1IPRqw
I’ve long wondered where bleach came from. https://www.youtube.com/watch?v=tKJCWJ-ibfI
Back to the beginning of The Western Civ User’s Guide to Reading & Writing.
Don’t forget: I wrote another Western Civ User’s Guide! Back to the beginning of The Western Civ User’s Guide to Time & Space.