Patent ID: 6838174

Claim:
An object to be in contact with a human's skin when used, comprising: an object base member having a film formation surface exposed to a pretreatment gas that cleans the film formation surface and enhances surface roughness for carbon film adhesion, the pretreated film formation surface coated with a carbon film adhering thereto and having a function of suppressing skin irritation, the carbon film having a friction coefficient of 1 or less and a film adhesion strength of at least 2 N, wherein the friction coefficient is measured with an aluminum pin having an end of 5 mm in radius, the pin being in contact with the carbon film under a load of 10 grams and moved at a speed of 20 mm per second, wherein said object to be in contact with the human's skin when used is a welfare object for a handicapped person selected from a group consisting of an object for allowing or helping excretion, an object for allowing or helping eating, an object for allowing or helping bathing, an object for preventing a bedsore, an object for allowing or helping movement and a prosthetic object.