Patent ID: 11862136
Assignee: COMPONENT TECHNOLOGIES, L.L.C.
Field: Other consumer goods (Other fields)
Classification: CPC G  E | IPC E  G

Claim 15:
16. A method for assembling the acoustic metamaterial structural unit according to any of the claims 1-9, characterized that the perforated constraint and the frames are prepared by the integral forming process. The perforated constraint and the frames are prepared as prefabrications firstly, and then the prefabrication of the perforated constraint is rigidly connected with the frame prefabrication to form the unit frame structure. The membrane is covered the unit frame structure under the freely spreading conditions, and further they are rigidly contacted. Finally, the membrane is perforated. Preferably, the integral forming process is milling, casting, stamping, laser cutting or the 3D printing process. Preferably, the prefabrication of the perforated constraint and frame are prepared by the process of milling, casting, stamping, laser cutting or the 3D printing. Preferably, the rigid connection is gluing connection, hot weld connection or mechanical rivet connection.