This study reveals the bending formability of a polypropylene (PP) sheet indented by a perforation blade when changing the pitch of the dashed-ruled line and the indentation depth. Creasing is a folding method of a carton sheet in which a score (called as a ruled line) is made at the bent portion. When making a creased line on a resin sheet. the scored sheet thickness decreases by app... https://www.ealisboa.com/best-grab-Chocolate-Chip-Cookie-Purse-Spray-mega-super/