3D mobile phone screen composite structure protective film using UV curing optical cement

The utility model discloses a 3D (three-dimensional) mobile phone screen composite structure protective film using UV (ultraviolet) curing optical cement, which comprises a polyurethane hardened layer, a pressure-sensitive adhesive layer and a release layer which are sequentially arranged from top to bottom, and the pressure-sensitive adhesive layer comprises a first PET (polyethylene terephthalate) composite film layer, a first OCA (optical clear adhesive) layer, an acrylic adhesive layer, a second OCA layer and a second PET composite film layer which are sequentially arranged. The first PET composite film layer is attached to the polyurethane hardened layer, the second PET composite film layer is attached to the release layer, a traditional OCA optical curing mode is changed into UV curing from thermocuring, the first PET composite film and the second PET composite film are fully wetted by uncured OCA, and the OCA is crosslinked and cured in the UV curing mode, so that the release layer is formed, the relea