Converting (Slitting) Pressure Sensitive Adhesive Tapes for Sales and Marketing Professionals Tape University Basics May 12, 2009
Slitting Expectations Consistent unwind throughout roll Dimensionally stable roll Nick free edges On core rolls Consistent unwind throughout roll Dimensionally stable roll Nick free edges On core rolls
Basic Slitting Methods Utilized Score Razor Shear Lathe Score Razor Shear Lathe Type of backing governs method of slitting Plastic Cores Paper Cores
Common Roll Sizes Core Sizes-1, 1.5, 3 and 6 inch ID Roll widths-1/4-3 inch common and up to 36 inches common for construction type applications Core Sizes-1, 1.5, 3 and 6 inch ID Roll widths-1/4-3 inch common and up to 36 inches common for construction type applications
Razor Slitting Highest use on thin, soft films Packaging tape is commonly slit by razor slitting Compliments of Dusenbury Shear Slitting Similar to using scissors Most expensive equipment Most precise /clean cutting Similar to using scissors Most expensive equipment Most precise /clean cutting Compliments of Dusenbury Foil tapes are shear slit Slitting Techniques
Slitting Techniques Continued Score Cutting AKA “crush cutting” Similar to a pizza cutter AKA “crush cutting” Similar to a pizza cutter Duct, masking, foam, cloth, pipe wrap and many film tapes are slit by score slitting AKA “Baloney Slicer” Used to cut log rolls AKA “Baloney Slicer” Used to cut log rolls Lathe Cutting Commonly used to slit film tapes such as PVC
Common Slitting Defects Telescoped rolls Geared and Gapped rolls Off-core wind Knicked edges (carton Sealing tape) Core dust Telescoped rolls Geared and Gapped rolls Off-core wind Knicked edges (carton Sealing tape) Core dust Have examples of each or insert pics
Summary You can have the best raw materials, best coating application, and loose it all with poor slitting