ES481537A3 - Improvements in rotating polishing discs. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in rotating polishing discs, characterized in that there are plurality of layers of non-woven fabric, joined together, whose non-woven fabric has a specific weight of the order of 0.1 to 0.6 grams per cubic centimeter with a thickness of at least 0.1 m/m and consisting essentially of a multiplicity of natural and/or artificial organic fibers or their mixtures; resistant, tenacious, durable, flexible, which are linked together by an adhesive, which are randomly distributed, and which have a titer no greater than 8 deniers, and a length between 1 cm and 15 cm. And a breaking strength greater than 3.5 grams per denier, the synthetic fibers being composed of an organic synthetic polymeric material whose melting or decomposition temperature is greater than 175º c. The fibers are firmly bound by an adhesive at the points where they intersect to form a uniform fabric. The binder material must be rigid but not brittle, and have a melting or decomposition temperature greater than 175º c. Said material or binding agent is contained in said fabric in an amount sufficient to bind these fibers firmly by adhesion to each other but in a non-excessive amount so as to immobilize them. (Machine-translation by Google Translate, not legally binding)