MANUFACTURING METHOD OF LAMINATE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a laminate structure capable of improving adhesiveness between a metal part such as an electroless copper plating layer and a dry film resist.SOLUTION: The manufacturing method of the laminate structure includes: a laminating step of laminating an insulator film and a backing film in this order on a substrate including a metal part in a top face or a second insulator layer including a metal part on a top face; an exfoliating step of exfoliating the backing film from a surface of the insulator film; and a plating step of forming the metal part on the insulator film by plating processing. The backing film includes ruggedness on a surface in contact with the insulator film and after the exfoliating step or before the plating step, the insulator film includes ruggedness on a surface in contact with the backing film, the ruggedness resulting from the ruggedness on the surface of the backing film.