| 主权项 |
1. A fibrous core, comprising:
a fluted layer; and a liner disposed on the fluted layer, wherein the fluted layer and the liner are helically wound defining a longitudinal core axis, and wherein the fluted layer and the liner are in the form of a strip, wherein the strip comprises a leading edge, a trailing edge opposite the leading edge, and a strip axis substantially parallel to at least one of the leading edge and the trailing edge, and wherein the leading edge overlaps the trailing edge to form an overlap portion and a seam on the outer surface of the fibrous core and further wherein the strip comprises at least one compressed portion having a width measured from at least one of a first edge and a second edge toward the strip axis, wherein the plurality of flutes in the at least one compressed portion are compressed. |
