Patent ID: 7156943

Claim:
A method for separating a composite having at least a substrate and a first member fixed onto a part of the bottom surface of the substrate using a first rigid body and a second body, the first rigid body having a horizontal surface on which the composite is to be placed and a non-horizontal surface on which the composite is not to be placed, the horizontal surface and the non-horizontal surface forming a continuous horizontal linear edge, the horizontal linear edge having a first portion which is an edge of the non-horizontal surface and a second portion which is an edge of the horizontal surface; the method comprising the steps of: applying a shearing force with the first rigid body and the second rigid body to a first region of the substrate which is a region provided with the first member and a second region which is a region of the substrate provided without the first member; in applying the shearing force, moving the second rigid body down from above a top surface of the substrate while the composite is placed so that the first portion corresponds to the first region or the first region and a first part of the second region and that the second portion corresponds to a remaining part of the second region; and providing the first rigid body with a convex cross-sectional shape when taken along a virtual vertical face perpendicularly intersecting the first portion of the horizontal linear edge, the convex shape having an apex at a position at which the horizontal linear edge and the virtual vertical face intersect each other, with a height of the convex shape in the vertical direction being larger than a height of the first member in the vertical direction.