Abstract: Disclosed is a pressure-sensitive adhesive tape or sheet which does not cause deterioration of an electrolytic solution even when immersed in the electrolytic solution and which can be smoothly unwound even after being wound. The pressure-sensitive adhesive tape or sheet includes a substrate and, on one surface thereof, a pressure-sensitive adhesive layer. The substrate has a wetting tension of from 30 to 35 mN/m in the surface to face the pressure-sensitive adhesive layer, where the wetting tension is measured by a method according to JIS K 6768:1999. The pressure-sensitive adhesive layer includes a pressure-sensitive adhesive containing substantially no polar group. A pressure-sensitive adhesive in the pressure-sensitive adhesive layer is preferably a rubber pressure-sensitive adhesive such as a polyisobutylene rubber and/or an isobutylene-isoprene rubber.

Abstract: Provided is a PSA tape for an electrochemical device, which can be peeled off rapidly and will not damage adherend materials or the PSA tape itself, or will not leave adhesive residues, when an adhesion defectiveness occurs during the manufacturing and processing of an electrochemical device, especially an electrolytic capacitor or a battery. The PSA tape comprises a substrate and a PSA layer placed on at least one face of the substrate. In the PSA tape, an anchoring strength of the PSA layer to the substrate is 7.0 N/10 mm or more.

Abstract: The present invention provides a pressure-sensitive adhesive tape for battery, which includes a substrate and a pressure-sensitive adhesive applied on at least one surface of the substrate, in which the pressure-sensitive adhesive is applied on a part of the substrate, and in which either one of a portion at which the pressure-sensitive adhesive is applied and a portion at which the pressure-sensitive adhesive is not applied has a degree of haze of more than 15%, and the other one of said portions has a degree of haze of 15% or less.

Abstract: The present invention relates to a pressure-sensitive adhesive tape for a non-aqueous battery, containing: a substrate and a pressure-sensitive adhesive layer on at least one side of the substrate, in which the pressure-sensitive adhesive layer contains 90 wt % or more of a polyisobutylene rubber, and in which a content of a polyisobutylene rubber having a molecular weight of 800,000 to 2,200,000 is in the range of 15 to 50 wt % based on the entire pressure-sensitive adhesive layer, a content of a polyisobutylene rubber having a molecular weight of 10,000 to 700,000 is in the range of 35 to 70 wt % based on the entire pressure-sensitive adhesive layer, and a content of a component having a molecular weight of 10,000 or less is 5 wt % or less based on the entire pressure-sensitive adhesive layer.

Abstract: The present invention provides a pressure-sensitive adhesive tape for battery, which includes a substrate and a pressure-sensitive adhesive applied on at least one surface of the substrate, in which the pressure-sensitive adhesive is applied on a part of the substrate, and in which either one of a portion at which the pressure-sensitive adhesive is applied and a portion at which the pressure-sensitive adhesive is not applied has a degree of haze of more than 15%, and the other one of said portions has a degree of haze of 15% or less.