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

Patent

CA 2060363

A tubular core assembly far a roll of paper or other sheet material has a hollow cylindrical core member formed by multiple wraps of paperboard material. An annular collar is located within each opposite end portion of the core member, each collar being a rigid body of non-isotropic material and having an outer annular surface secured to the inner annular surface of the core member and an inner annular surface shaped to receive a roll supporting chuck. The ratio of collar wall thickness to core member wall thickness is in the range of from about 1.3:1 to about 2:1.

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