公开(公告)号：US20240212661A1

公开(公告)日：2024-06-27

申请号：US18288468

申请日：2022-04-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tatjana Stecenko ,  Olester Benson, Jr. ,  Tongyang Shi ,  Pingfan Wu ,  James M. Jonza

IPC: G10K11/162 ,  B29C59/04 ,  B29K101/10 ,  B29L31/00 ,  G10K11/172

CPC classification number: G10K11/162 ,  B29C59/046 ,  G10K11/172 ,  B29K2101/10 ,  B29K2995/0046 ,  B29K2995/0063 ,  B29K2995/0097 ,  B29L2031/721

Abstract: Provided is an acoustic article and related methods of manufacture and use. The acoustic article includes a continuous layer having a first elastic stiffness, and a plurality of distributed masses disposed on a major surface of the continuous layer having a second elastic stiffness. The second elastic stiffness can be less than the first elastic stiffness to provide an acoustic metamaterial displaying an anti-resonance peak at a frequency below 800 Hz. The acoustic article can be made using efficient and scalable processes for manufacturing low frequency acoustic barrier materials.