| abstract |
The present invention provides a sheet for forming a protective film comprising a base material, an energy ray-curable adhesive layer on the base material, and a curable protective film-forming layer in this order, and the protective film-forming layer Shearing at 23°C of the protective film-forming layer before curing in order to form a protective film on the convex-electrode-forming surface by sticking to the convex-electrode-forming surface of a workpiece having convex-shaped electrodes and curing The storage elastic modulus was 3000 MPa or less, and the tensile storage elastic modulus at 23° C. of the adhesive layer after energy ray irradiation was 45 MPa or less. |