US Patent 11220395 Slit paper expansion method and apparatus

An expansion devise includes an unexpanded slit sheet roll that is wound on a paper core that is wider than the slit sheet paper. The paper core is placed into a yoke that holds the paper in position on each side of the unexpanded slit sheet material. An adjustable downward pressure is exerted on the paper core and the paper core exerts pressure on the yoke. As the paper is pulled, this downward pressure creates the friction required to enable the unexpanded slit sheet to be unwind and fed while simultaneously expanding. A blank sheet is formed into a box that stabilizes slit paper sheet wound around a core member.