Perforation blade for perforating tissue products

• Main Authors: Sartain, Kevin B, Wilson, Matthew Robert, Baggot, James Leo, Montgomery, Walter F
• Format: Patent
• Language: English
• Published: 27.02.2020
• Subjects: CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

PERFORATION BLADE FOR PERFORATING TISSUE PRODUCTS An apparatus (30) for perforating continuous sheet materials comprising: an anvil (34); and a perforation blade(40) that is configured to contact the anvil (34) for perforating a sheet material (10), the perforation blade (40) comprising a blade member that has a length and terminates along an edge, the edge defining a plurality of teeth configured to contact the sheet material and form perforations, each tooth including a sheet contacting surface having a width for creating more than one point contact with the sheet material thereby forming a perforation line into the sheet material, the teeth being spaced apart along the edge and being separated by recesses, each recess being bordered by two side walls of two adjacent teeth, each recess having a width along the edge of the blade member and a depth that extends along the bordering side walls, and wherein at least one side wall within each recess is slanted at a non-zero angle in relation to a longitudinal axis that intersects the side wall and extends perpendicular to the perforation blade edge, the non-zero angle being from 2° to 40, wherein the sheet contacting surface of each tooth has a width of from 0.05 inches (1.27 mm) to 0.2 inches (5.08 mm) .