The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2026
Filed:
Aug. 10, 2022
Aac Technologies (Nanjing) Co., Ltd., Nanjing, CN;
AAG Technologies (Nanjing) Co., Ltd., Nanjing, CN;
Abstract
A method for preparing a sound-absorbing material block, the method includes steps of mixing raw materials to prepare a mixed paste and filling the mixed paste into a speaker rear cavity of a speaker provided in advance, and then sequentially performing drying treatment and dehydration treatment to obtain the sound-absorbing material block. On one hand, the sound-absorbing material block is prepared by mixing the porous material, the gelling agent, the cross-linking agent, the binder, the foaming agent, and the solvent, so that the prepared sound-absorbing material block has high strength, is not prone to breakage, and has good performance. And on an other hand, the sound-absorbing material block adapted to the rear cavity of the speaker is directly prepared, so that steps of cutting and filling can be omitted, and a filling process is simplified.