Four hundred years ago, Mr Hyodo Tarouemon invented the double-layered paper, and named “Senka-shi(泉貨紙)”. That strong paper became a very popular Washi for Japan-wide. It is recognized with the paper name, not district name.
The screen mat is separated into two parts (see photo#2). They lay over two sheets just after scooping material.
The paper is quite strong, suitable especially for woodcut painting. And good for paper-clothes making as well.