ADHESIVE SHEET

PURPOSE:To obtain an adhesive sheet excellent in the adhesive properties of both sides of the sheet and in the product quality by forming chemically, physically or geometrically asymmetric adhesive layers on both sides of the substrate. CONSTITUTION:An adhesive sheet having adhesive layers formed on both sides of the substrate, wherein the adhesive layers of the both sides are chemically, physically, or geometrically asymmetric. As each of the adhesive layers can be optimized as to the material, unevenness, etc., of each adherend surface adhered to each adhesive layer, the adhesive sheet can solve problems caused by the symmetrical adhesive layers of the both sides in a conventional adhesive tape. In addition, as the most suitable adhesive layer is formed on each side in casing, the adhesive sheet enables adhesion without defects such as adhesion failure, void, and degradation and nonuniformity of product quality even when used in adhering materials to be stuck and of surface conditions (e.g. unevenness) differing from each other.