Wound roll of fibrous material

Claim 1

A length of single ply fibrous material such as label ribbon and the like wound into a coreless roll comprising: a fibrous ribbon wound into a multiplicity of contiguous, radially successive, concentric layers forming a roll of an annular configuration consisting of a plurality of inner layers disposed near the center of the roll and a plurality of outer layers disposed near the periphery of the roll, first locking means for establishing an interlocking relationship between the inner layers of the roll, and a second locking means for establishing an interlocking relationship between the outer layers of the roll, each of said locking means comprising a plurality of punctures and a plurality of burrs, each puncture of said plurality of punctures being formed in a layer of a plurality of radially successive layers of the roll and disposed in registry with adjacent punctures, and each burr of said plurality of burrs being integrally related to and projected from a layer of said plurality of radially successive layers of the roll and received in an interlocking relationship with a plurality of said punctures.