| abstract |
A pressure sensitive adhesive sheet is provided, containing a substrate or a release material having thereon a resin layer including a resin part (X) containing as a main component a hydrocarbon resin having a carbon atom on a main chain of a structural unit, and a particle part (Y) consisting of fine particles containing silica particles, and at least a surface (±) of the resin layer being opposite to the side of the substrate or being opposite to the side which the release material is provided, having pressure sensitive adhesiveness, the resin layer containing a multilayer structure having a layer (X±) and a layer (Y1) in this order in the thickness direction from the side of the surface (±), in a measurement of an intensity ratio (Si/C) of a peak intensity (Si) derived from a silicon atom and a peak intensity (C) derived from a carbon atom with an energy dispersive X-ray analyzer in the thickness direction from the side of the surface (±) of the resin layer, the intensity ratio in the layer (X±) being less than 0.10, and the intensity ratio in the layer (Y1) being 0.10 or more, the surface (±) having concave portions of irregular shapes. |