PREPARING METHOD OF SPEAKER GRILL FOR VEHICLES

A method of manufacturing a speaker grill for a vehicle includes coating a coating layer by depositing metal on one side of a steel sheet; pre-etching including forming a first masking layer on one portion of the coating layer, etching the other portion of the coating layer on which the first maskin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	CHOI, Dong Jae
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	A method of manufacturing a speaker grill for a vehicle includes coating a coating layer by depositing metal on one side of a steel sheet; pre-etching including forming a first masking layer on one portion of the coating layer, etching the other portion of the coating layer on which the first masking layer is not formed, and removing the first masking layer to form a first etched steel sheet; and performing hole etching including forming a second masking layer on one portion of the first etched steel sheet where the coating layer is present, etching the other portion of the first etched steel sheet on which the second masking layer is not formed, and removing the second masking layer to form a second etched steel sheet, wherein a total area of the first masking layer is smaller than a total area of the second masking layer.