Patent ID: 8246774

Claim:
A resin bonding method for bonding a first resin and a second resin together, comprising the steps of: (I) irradiating a space containing oxygen molecules with vacuum ultraviolet light having a wavelength of 175 nm or smaller, the space being adjacent to a first surface of the first resin and a second surface of the second resin; and (II) after the irradiation, placing the first and second surfaces in contact with each other, and increasing a temperature such that the first resin and the second resin are bonded to each other via the first and second surfaces serving as bonding surfaces: wherein a certain surface roughness of the first and second surfaces allows the first and second resins to become separable from each other if at least one liquid selected from water and alcohol at a temperature of 40° C. or greater is applied, or the liquid at a temperature less than 40° C. in combination with ultrasonic vibrations is applied.