PRESSURE-SENSITIVE ADHESIVE COMPOSITION HAVING EXCELLENT WATER RESISTANCE AND INFORMATION-CARRYING SHEET USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive composition which is applied on a base sheet to give water resistant adhesion layers which do not increase in adhesion even if they are wet after being in close contact with each other under pressure to adhere to each other and to provide an information-carrying information sheet having the adhesion layer of the pressure-sensitive adhesive composition. SOLUTION: The pressure-sensitive adhesive composition is used, which is obtained by blending a natural rubber-based adhesive base with 100-250 parts by mass of a water resistant particulate filler, 25-50 parts by mass being a small particulate with an average particle diameter of 1-10μm and 75-200 parts by mass being a large particulate with an average particle diameter of from above 10μm to 20μm, based on 100 parts by mass of the solid content of the adhesive base.