JOINING METHOD

摘要

PROBLEM TO BE SOLVED: To enable resin surfaces to be joined to each other at lower temperatures which are temperatures of a glass transition point or lower by flattening a joint surface and lowering a molecular weight of the joint surface.SOLUTION: A method for joining resin surfaces each other includes: a step of flattening and softening joint surfaces of base materials 11 and 12 by irradiating the joint surfaces with high energy; and a step of heating and/or pressurizing the base materials 11 and 12 after having brought the joint surfaces into contact with each other, and joining the base materials each other.SELECTED DRAWING: Figure 2