Method for manufacturing a sheet for forming an energy line hardening protective film and a workpiece with the protective film.

Abstract

The energy-curing protective film forming sheet of the present invention comprises: an energy-curing protective film forming film 11 for forming a protective film; a heavy-side peeling film 12 disposed on one side of the aforementioned energy-curing protective film forming film; and a light-side peeling film 13 disposed on the other side of the aforementioned energy-curing protective film forming film; wherein, before energy beam irradiation, the Young's modulus of the aforementioned energy-curing protective film forming film 11 is 6 MPa or more, the peeling force F1 of the aforementioned heavy-side peeling film 12 from the protective film forming film 11 is 100 mN / 100 mm or more to 200 mN / 100 mm or less, the peeling force F2 of the aforementioned light-side peeling film 13 from the protective film forming film 11 is 30 mN / 100 mm or more to 100 mN / 100 mm or less, and the difference (F1-F2) between the aforementioned peeling force F1 and peeling force F2 is 50 mN / 100 mm or more to 160 mN / 100 mm or less.

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