PROCESS FOR STAGED MULTIPLE YARN WINDING AND RESULTING PRODUCT

摘要

TITLE Process for Staged Multiple Yarn Winding and Resulting Product A process is disclosed wherein a plurality of layers of yarns are laid down in a diamond shaped pattern on a rotating cylindrical mandrel wherein the yarn walls forming the diamond shaped pattern cover the openings of each adjacent layer. The yarns are formed of refractory oxide filaments which are coated with a refractory . ceramic to form a filter or trap for removing particulates from combustion exhausts.