Com. styrene-butadiene block copolymer with a styrene-tobutadiene mass ratio 69:31 was treated with a clean low-pressure plasma generated by an RF discharge (13.56 MHz, plate electrode reactor) in O-2 and CO2, to create oxygen functionalities such as OH and C=O groups on the elastomer surfaces and improved their adhesion to polyurethane adhesives without any wet chem. surface treatment. The 180-degree-peel tests and FTIR spectroscopy were used to examine the surfaces. The chem. interaction between OH groups on the modified copolymer surfaces and NCO groups of polyurethane adhesives was obsd. The short-time plasma treatment (less than 1 min, 10-80 W) resulted in a substantial increase in the adhesion strength. The peel strength of plasma-treated samples was also mostly higher than that of the wet chem. modified ones.