Patent ID: 6042462
Filing Date: 2000-03-28
Classification: B24D

Abstract:
A flexible backing for sheet abrasive material for manual treatment of surfaces, the flexible backing forming a flat body including at least three materials which are bendable and twistable to adjust to any shaped surface to be treated and having two opposite active faces, said body comprising:an intermediate resilient core lamina of flat form including first and second opposite sides and having a thickness to facilitate manual bending and twisting thereof and to promote resilient recovery to the flat form;a first outer flexible layer having a first modulus of elasticity, said first outer layer being stably coupled at a first surface thereof to the first side of said core lamina while providing at a second opposite surface a first one of said active faces;a second outer flexible layer having a second modulus of elasticity, said second outer layer being stably coupled at a first surface thereof to the opposite second side of the core lamina while providing at a second opposite surface the second one of said active faces; andsaid first and second moduli of elasticity differ from each other and said first and second outer layers have different flexural rigidity.