Abstract: The present invention provides a mirror having excellent weatherproof properties that suffers little deterioration of the reflective layer even when, for example, the mirror is used outdoors for a long time. The present invention provides a weatherproof mirror wherein a substrate, a reflective layer, and a sealing resin layer are disposed in that order. The substrate is made of a transparent plastic plate; the reflective layer is a metal layer; and the sealing resin layer exhibits flexibility and self-adhesive property at room temperature and constitutes a continuous phase. In a preferable aspect, the substrate has a plurality of micro grooves with V-shaped cross-sections and thus has a Fresnel lens structure.

Abstract: The present device is an adhesive sheet having an adhesive layer consisting of an adhesive composition containing a thermosetting resin and a thermal foaming agent and a coating layer. The coating layer having a resin and provided on the adhesive layer. The coating layer is characterized in that it does not exhibit tackiness at room temperature. In addition, at least a part of the coating layer disappears in a region ranging from an interface between the adhesive layer and the coating layer to a surface of the coating layer by heating the adhesive sheet at a temperature not lower than a curing starting temperature of the adhesive layer and wherein the following inequation is satisfied: T3<T1, T1 is a thermal foaming temperature of the thermal foaming agent, and T3 is a glass transition temperature of the coating layer.

Abstract: Problem: To provide an adhesive sheet having excellent workability while also maintaining sufficient foaming characteristics. Solution: An adhesive layer which is formed from a thermosetting and foamable adhesive composition and exhibits tackiness at room temperature and may possibly crack is formed on a substrate for example. A coating layer, which has a softening temperature T3 that satisfies a predetermined relationship of (T3<T1?T2) in relation to a thermal foaming temperature T1 of a thermal foaming agent contained in the adhesive layer and a curing starting temperature T2 of the adhesive layer and consists of a resin and does not exhibit tackiness at room temperature but softens and disappears upon heating, is formed on the adhesive layer to configure an adhesive sheet.