公开(公告)号：US11511508B2

公开(公告)日：2022-11-29

申请号：US17137242

申请日：2020-12-29

Applicant: Liaoning Xingqi Electric Material Limited Liability Company

Inventor： Dongyang Wu ,  Dandan Li ,  Shangyuan Huo ,  Jin Dai ,  Liang Shi

IPC: B31D5/00 ,  D21J1/12 ,  B32B27/10 ,  B32B27/36 ,  B32B29/00 ,  B32B37/18 ,  B32B38/00 ,  B31D5/02 ,  B32B37/10

Abstract: Disclosed is a process of manufacturing a thickened angle ring. The process includes the steps of: soaking wet paper into deionized water for 1 hour; beating bonding surfaces of the two pieces of wet paper into fuzzed and rough surfaces; placing a heat resisting polyester film and a nylon net on a mold, and placing one fuzzed wet paper on the mold in contact with the nylon net on smooth side thereof; placing the other wet paper in contact with the fuzzed surface of the previous wet paper on fuzzed side thereof, and beating until the wet paper fits the mold; placing a further heat resisting polyester film and a further nylon net on the two pieces of wet paper for pressing.