公开(公告)号：US10933455B2

公开(公告)日：2021-03-02

申请号：US14999845

申请日：2016-07-07

申请人： Robert F. Miller ,  Garrett Colin Gersten ,  Russell L. Hinckley, Sr. ,  Michael Francis Kraut

发明人： Robert F. Miller ,  Garrett Colin Gersten ,  Russell L. Hinckley, Sr. ,  Michael Francis Kraut

IPC分类号： B21C37/12 ,  B65H75/10 ,  B21C47/02

摘要： Disclosed is a tubular core on which sheets of metal or other material can be wound and supported, for shipment, handling and dispersal, and a method for forming the core. The core comprises a metal sheet or strip which has a rectangular-ribbed cross-sectional profile comprising rectangular, flat ribs, and which is wound spirally into a tubular configuration. The core is formed by passing the strip through a plurality of roll-forming stands, to progressively form sections of the ribs and progressively define the sections into the rectangular ribbed profile in which the flat ribs collectively form a support surface for the sheets which are to be wound on the core.