MANUFACTURING METHOD FOR WATCH OUTER PACKAGE COMPONENT, WATCH OUTER PACKAGE COMPONENT AND WATCH

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for a watch outer package component, capable of efficiently manufacturing the watch outer package component which is excellent in esthetic appearance with less waste of a material and by a method giving small load to the environment.SOLUTION: A manufacturing method for a watch outer package component includes a coating film formation step for spraying aerosol obtained by dispersing a particle into gas toward a base material P1 from a nozzle to form a coating film by the impact force and is characterized that a composite particle having a first material phase and a second material phase different from the first material phase is used as the particle.