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1. (WO2017038105) METHOD FOR CLEANING PORTABLE ELECTRONIC DEVICE, AND METHOD FOR INSPECTING AND METHOD FOR MANUFACTURING FILM FOR FUNCTIONING AS WATERPROOF VENTILATION FILM AND/OR WATERPROOF SOUND-TRANSMITTING FILM

Pub. No.:    WO/2017/038105    International Application No.:    PCT/JP2016/004029
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Sep 03 01:59:59 CEST 2016
IPC: B08B 3/04
B08B 11/00
Applicants: NITTO DENKO CORPORATION
日東電工株式会社
Inventors: HIRAI, Bunta
平井 文太
KUKI, Nobuharu
九鬼 伸治
Title: METHOD FOR CLEANING PORTABLE ELECTRONIC DEVICE, AND METHOD FOR INSPECTING AND METHOD FOR MANUFACTURING FILM FOR FUNCTIONING AS WATERPROOF VENTILATION FILM AND/OR WATERPROOF SOUND-TRANSMITTING FILM
Abstract:
The present invention provides a method for cleaning a portable electronic device provided with a housing having an opening, and a waterproof breathable (sound-transmitting) film fixed to an inside surface of the housing so as to block the opening, wherein the method for cleaning a portable electronic device comprises performing a step (II) for cleaning a surface of the electronic device using a first cleaning liquid including a surfactant, and a step (III) for supplying a second cleaning liquid including essentially no surfactant from the opening to the film and cleaning the film, the step (III) being initiated before a predetermined time td has elapsed after the step (II) is performed, and the second cleaning liquid being supplied in the step (III) so that a flow of the second cleaning liquid reaches the opening and the film is cleaned while the electronic device is retained in a state in which a normal vector P1 of an outside surface of the housing surrounding the opening is oriented in a horizontal direction H or further upward therefrom toward a vertical direction V.