Photohärtbare Harzzusammensetzung und Methode zu ihrer Härtung

摘要

The present invention provides a sheet-like photocurable resin compound, which can secure or control a sufficient application time outdoors where the compound is irradiated with natural light, and can suppress volatilization of a styrene monomer. This sheet-like photocurable resin compound comprises a photocurable resin compound (i) containing as an essential component at least one unsaturated resin (A) selected from the group consisting of unsaturated polyester resin, vinyl ester resin, vinyl urethane resin, and acrylic resin, a photopolymerization initiator (B) which is not activated by irradiation with light with a wavelength of 420 nm or above, and a tackifier (C) containing a thermoplastic resin powder as an active component; and a see-through light absorbing film (ii) whose transmittance to light with a wavelength of 420 nm or below is 10% or less; said photocurable resin compound being covered with said see-through light absorbing film.