ROTARY DIE BOARD

摘要

An arcuate die board formed as a multi-layered paperboard structure. The die board is initially produced as a full cylindrical paperboard tube, which is subsequently cut lengthwise to form two or more part-cylindrical portions ea ch of which is used to fabricate a die board. The die board is then cut to form th e slots in its outer surface for mounting die tools. The multi-layered paperboard tube can be spirally wound, convolutely wound, or formed by a linear draw process. The part--cylindrical wall is formed predominantly, substantially entirely, or entirely of paperboard plies adhesively laminated together.