A web-winding core (1) is disclosed. The core comprises a tubular wall and longitudinal ribs (2) extending radially inward from the wall. It is formed from a fibre reinforced polymeric composite material. The polymeric material is typically anisotropic and has the required strengths in specific directions by design ...

An insert (12) that has particular use in construction of a web-winding core with a composite body (10). The insert (12) has an outer surface that can be inserted within a core body, and an inner surface that can be engaged to be driven by a chuck. The core includes a restraining structure that can resist transmissi...