To reduce the consumption of an adhesive material by releasing the ends of cover films by the adhesive material and then delivering the ends of the cover films to a clamping device and continuously releasing the cover films from a multilayer film after separating the adhesive material from the cover films.

Respective bases 1 are carried at intervals L1 on a carrying roll 2 constituting a carrying line, and perforations are formed in the width direction of films from a film roll 3 by a perforation forming unit 7. Then cover films 6 corresponding to sections required for sticking the films are released by a cover film release unit 22, and resist films 5 are pressure bonded on the bases 1 by the pressure rollers 16a and 16b. As the cover films 6 still remain on sections L2, on which the sticking on the bases is not required, the resist films 5 can be pressure bonded only on the required sections of the bases. Thus the quantity of the adhesive material 13 (adhesive type) consumed when cover films 6 are released can be reduced.