Tubular core assemblies for rolls of paper or other sheet...

Details Tubular core assemblies for rolls of paper or other sheet... Tubular core assemblies for rolls of paper or other sheet...

B - Operations, Transporting

65

H

B65H 75/30 (2006.01) B65H 75/10 (2006.01) B65H 75/18 (2006.01)

Patent

CA 2299107

A tubular core assembly for roll of paper or other sheet material has a hollow cylindrical core member formed of paperboard material and an annular end member of plastic material within each opposite end portion of the core member. Each end member has an outer annular surface secured to the inner annular surface of the core member and an inner surface shaped to receive a roll supporting chuck. Each end member also has at least two radially-projecting lugs at the respective end of the tubular core assembly positioned so as to be rotationally balanced. The core member has at least two lug-receiving notches at each end receiving lugs of the respective end member to rotationally equalize continuous torque and axial chuck pressure from each end member to the core member. Each end member also has an inner annular surface at the end which is continuous and of constant radius around the circumference thereof.

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