ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,066, issued on Sept. 23, was assigned to CORELEX SHIN-EI Co. LTD. (Fuji, Japan).
"Toilet paper roll manufacturing method" was invented by Satoshi Kurosaki (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toilet paper roll manufacturing method is provided with which, when 4-ply toilet paper is torn off, individual layered sheets of the paper are prevented from peeling off each other and a good appearance is ensured. A sprayer 22a sprays a bonding liquid between two 1-ply paper sheets 110 and 111, a sprayer 22b sprays the bonding liquid between two 1-ply paper sheets 111 and 100, a sprayer 22c sprays the bonding liquid between two 1-...