| abstract |
This invention provides the adhesive tape for electrochemical devices which content of moisture is very low, is difficult to "pull out", and does not peel even when it contacts with electrolyte solution. The adhesive tape for electrochemical devices of this invention is an adhesive tape for electrochemical devices which has the adhesive layer which consists of an acrylic adhesive in at least one surface of a plastics base material, The gel fraction is 60% or more and thickness is 1-15 micrometers. It has an adhesive layer, and the water absorption after immersion in water at 23 degreeC for 24 hours is characterized by being 0.2% or less. The said acrylic adhesive is a copolymer of the monomer component containing the (meth) acrylic-acid alkylester containing a C6-C10 alkyl group, and an isocyanate-reactive group containing monomer, and 80 weight% or more of the said monomer component is said C6 It is preferable to contain the acryl-type polymer which is (meth) acrylic-acid alkylester containing the alkyl group of 10. |