Invention Grant
- Patent Title: Method of manufacturing an electret film
- Patent Title (中): 驻极体膜的制造方法
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Application No.: US12422784Application Date: 2009-04-13
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Publication No.: US08776367B2Publication Date: 2014-07-15
- Inventor: Shih-Yuan Lee , Chih-Kung Lee , Wen-Ching Ko , Jia-Lun Chen , Ing Yih Leu , Wen-Hsin Hsiao , Wen-Jong Wu
- Applicant: Shih-Yuan Lee , Chih-Kung Lee , Wen-Ching Ko , Jia-Lun Chen , Ing Yih Leu , Wen-Hsin Hsiao , Wen-Jong Wu
- Applicant Address: TW
- Assignee: National Taiwan University
- Current Assignee: National Taiwan University
- Current Assignee Address: TW
- Agency: Lowe Hauptman & Ham, LLP
- Main IPC: H01B19/00
- IPC: H01B19/00
Abstract:
A method of making a nonfluoropolymer electret film is provided. The method may include: providing a polymer-containing solution, the polymer-containing solution comprising at least one polymer material, at least one solvent, and at least one surfactant, spreading the polymer-containing solution to provide a wetting polymer film, removing at least a portion of the solvent in the wetting polymer film to provide a polymer film, and conducting a Corona charging to the polymer film to form the electret film.
Public/Granted literature
- US20090245547A1 ELECTRET MATERIALS, ELECTRET SPEAKERS, AND METHODS OF MANUFACTURING THE SAME Public/Granted day:2009-10-01
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