Patent ID: 11930310
Assignee: KIA CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A method for manufacturing a speaker grille for a vehicle, the method comprising:
a step of manufacturing a stack by forming an adhesive layer on a steel plate and forming a metal sheet layer on the adhesive layer; and
a step of forming a plurality of holes through the stack by perforating the stack,
wherein the step of forming the plurality of holes includes:
a pre-etching step of forming a masking layer on part of the stack, forming guide grooves by etching part of the metal sheet layer on which the masking layer is not formed, and manufacturing an etched stack by removing the masking layer; and
a step of forming the holes by perforating the guide grooves of the etched stack.