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:
Aug. 31, 2021
Filed:
Dec. 17, 2015
Goertek Inc., Weifang, CN;
Xiaodong Cao, Weifang, CN;
Goertek Inc., Weifang, CN;
Abstract
The present invention relates to a method for preparing a sound-adsorbing material and a sound-adsorbing material. The method includes the following steps: S, preparing a non-foaming material slurry and mixing the slurry uniformly; S, forming the non-foaming material slurry by using an oil column forming method to form wet granules; S, drying the wet granules to form dry granules; and S, roasting the dry granules to form sound-adsorbing material granules. The method has the advantages of simple operation and high reliability. The formed granules can have a uniform size, a smooth surface and high sphericity, and the granules are in contact with each other in points and piled up uniformly, which can reduce the bed resistance.