Elastomer-covered roller having a thermally sprayed permeable bonding material

摘要

A elastomer-covered roller (10) is provided with an improved bond coating for bonding the elastomeric cover (14b) to the core (11b). At least one layer of material (21) is thermally sprayed on the core (11b) to form a rough surface having a roughness from 400 microinches Ra to 2000 microinches Ra or greater. At least one layer (21, 25, 26, 31, 32) is either sufficiently permeable to divert bond-degrading fluids away from the bond line (22, 27, 33) or is impermeable to bond-degrading fluids.