| 摘要 |
The problem in the art is to provide an adhesive sheet which can maintain a specific uneven structure just after the adhesion to an adherent so that bubbles can effectively escape even when the bubbles are trapped, and thereafter, the uneven structure deforms so that the deterioration of the appearance can be prevented after the adhesion. To solve that problem, an adhesive sheet comprising a flexible substrate film; an adhesive layer which is in contact with a main surface of the substrate sheet, and which has an uneven structure comprising projections which will be in contact with an adherent and grooves which are formed between adjacent projections and will communicate outside when the projections are in contact with the adherent; and a liner which has a negative structure corresponding to the uneven structure of the adhesive layer, and is laminated on the adhesive layer so that the negative structure and the uneven structure on the surface of the adhesive layer are in contact with each other, in which the adhesive layer comprises a crosslinked polymer, and maintains the uneven structure just after the adhesive sheet is adhered to the adherent, and the uneven structure deforms and a contact area increases to at least 92 %, or the adhesive layer comprises a matrix component containing an adhesive polymer and elastic microspheres which are dispersed in said matrix component and have a volume average diameter of 10 to 100 mu m.
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