Patent ID: 7291281

Claim:
An in-micropore fluorine plastic removing method for removing fluorocarbon resin in micropores of a work, said micropores being provided by penetrating said work in a thickness direction, wherein a crater portion is formed on one side of said work and a fluorine plastic film is formed on a surface of the crater portion, wherein process gas converted into plasma is flown into said micropores from one side of said work to remove the fluorocarbon resin in said micropores and the process gas flows through the micropores and exits from the other side of said work, wherein a fluorine plastic film is formed on one surface of said work, wherein said process gas is flown into said micropores from a surface side of said work without said fluorocarbon resin formed thereon, and wherein, when the process gas flows inside the micropores, the fluorine plastic film formed on the surface of the crater portion is not removed.