Patent ID: 11970361
Assignee: SONOCO DEVELOPMENT, INC.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A core for winding sheet material thereon, the sheet material having a leading edge, the core comprising:
a cylindrical hollow tube having a length, the tube having an outer facing surface, an inner facing surface and a central longitudinal axis (A), the tube having a first annular end and a second annular end, the tube defining a slot having a bottom wall, a leading sidewall and a trailing sidewall, each sidewall extending from a top edge at the outer facing surface of the tube to a bottom edge, the slot extending the length of the tube substantially parallel to the central longitudinal axis (A), wherein the bottom wall defines a centrally disposed longitudinally oriented dip located between the sidewalls; and
a strip of material disposed within the slot, the strip having a length substantially the same as the length of the tube, the strip having a longitudinal leading side edge and a longitudinal trailing side edge, the strip having a strip width (SW) and a strip thickness (T), the strip having a longitudinally oriented central region extending the length of the strip between the leading side edge and the trailing side edge.