NOVELTY - A pressure-sensitive adhesive tape (3) for a non-aqueous battery, comprises: substrate (1) and pressure-sensitive adhesive layer (2) provided on at least one side of the substrate, where the pressure-sensitive adhesive layer contains a polyisobutylene rubber (90 wt.%).    USE - As pressure-sensitive adhesive tape for non-aqueous battery (claimed).    ADVANTAGE - The pressure-sensitive adhesive tape has a water absorption ratio, when allowed to stand under a condition of 23 degrees C and 50% RH for 24 hours, of less than or equal to 3 wt.%; has a piercing strength, obtained by the following measuring method, of greater than or equal to 300 gf, and where the measuring method involves fixing the pressure-sensitive adhesive tape to a plate in which a circular hole having a diameter of 11.28 mm is formed, piercing a needle of which the end has a curvature diameter of 0.5 mm to the pressure-sensitive adhesive tape at a speed of 2 mm/s under 23 plus minus 2 degrees C, and measuring a maximum load (gf) when the needle penetrates the pressure-sensitive adhesive tape; has a volume resistivity of greater than or equal to 1x 1010 Omega .cm; and has a gel fraction (solvent:ethylene carbonate/diethyl carbonate of 1/1) of greater than or equal to 80 wt.%. The pressure-sensitive adhesive tape for a non-aqueous battery that improves an insertion conpetence of an electrode in a battery case and can prevent a short-circuit between electrodes caused by a burr existing on an electrode plate by using the tape in the battery in which the non-aqueous electrolytic solution is to be sealed without causing a decrease in power of the battery. The pressure-sensitive adhesive layer is difficult to be deformed even at a high pressure and difficult to spread from a substrate because the layer has an appropriate adhesive strength and a high cohesive property; can considerably suppress deterioration of the electrolytic solution because the layer is difficult to be eluted to the electrolytic solution and even when the layer is eluted, since the reactivity with the electrolytic solution is low. The adhesive tape for a non-aqueous battery is used for fixing a terminal in a battery having a winding type electrode structure to allow an insertion operation of an electrode into a battery case to be easily performed, is attached to an electrode plate to prevent the occurrence of a short-circuit between electrodes caused by penetration of a burr existing on the electrode plate through a separator, and imparts a high safety and reliability to the battery. The pressure sensitive adhesive tape exhibits the above effects in respect to the battery having a high capacity and high power.    DETAILED DESCRIPTION - A pressure-sensitive adhesive tape (3) for a non-aqueous battery, comprises: a substrate (1), and a pressure-sensitive adhesive layer (2) provided on at least one side of the substrate, where the pressure-sensitive adhesive layer contains a polyisobutylene rubber (90 wt.%), where a content of a polyisobutylene rubber having a molecular weight of 800000-2200000 is 15-50 wt.% based on the entire pressure-sensitive adhesive layer, a content of a polyisobutylene rubber having a molecular weight of 10000-700000 is in the range of 35-70 wt.% based on the entire pressuresensitive adhesive layer, and a content of a component having a molecular weight of less than or equal to 10000 is 5 wt.% based on the entire pressure-sensitive adhesive layer.    DESCRIPTION OF DRAWING(S) - The figure shows schematic cross-sectional view of the pressure-sensitive adhesive tape for a non-aqueous battery.    Substrate (1)    Pressure-sensitive adhesive layer (2)    Pressure-sensitive adhesive tape (3)