Surface coating layer formation method and gasket manufacturing method

Abstract

Disclosed herein is a surface coating layer formation method and a gasket manufacturing method capable of reducing the falling off of insoluble fine particles into a liquid medicine while preventing leakage of the liquid medicine and maintaining stable slidability. A material of a surface layer has a composition in which silicon-based rubber particles are contained in a silicon-based solution, and a surface coating layer formation method includes an application step of applying the material to a surface of a base material so as to have a predetermined coating thickness; a drying step of drying a sliding member after the application at a first temperature for a first time period; a baking step of baking the sliding member after the drying at a second temperature for a second time period; and a cleaning step of extraction-cleaning the sliding member after the baking at a third temperature for a third time period.