公开(公告)号：WO2021255707A1

公开(公告)日：2021-12-23

申请号：PCT/IB2021/055406

申请日：2021-06-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： VARGHESE, Alex ,  BHATTACHARYA, Dhritisunder ,  VASHISTHA, Deval Yogendra ,  PALLED, Satish Veerappa

IPC: G10K11/165 ,  B23B27/12 ,  B23B27/20 ,  G10K11/168 ,  B32B1/00 ,  B32B2250/02 ,  B32B2250/20 ,  B32B2255/02 ,  B32B2255/26 ,  B32B2262/0253 ,  B32B2262/0261 ,  B32B2262/0276 ,  B32B2262/062 ,  B32B2262/144 ,  B32B2264/10 ,  B32B2307/102 ,  B32B2307/51 ,  B32B2307/718 ,  B32B2307/724 ,  B32B2307/7242 ,  B32B2605/08 ,  B32B5/022 ,  B32B5/08 ,  B32B5/268 ,  B32B5/271 ,  B60R13/08 ,  D06N7/0005

Abstract: Embodiments of the present invention relates to a noise reduction article (300) and method of manufacturing same. The noise reduction article (300) comprises at least one of polymeric resins and inorganic fillers being deposited on a porous layer (304) and heat treated together to form a unibody, wherein the at least one of polymeric resins and inorganic fillers on the heat treatment forms an impervious layer (302), and the porous layer comprises at least one fiber forming polymer.