Abstract:
The invention concerns a device (10) for continuously treating a web substrate (15a) in a plasma enhanced process. The device (10) contains at least one treatment station (12a, 12b) with a vacuum process chamber, wherein at least one plasma treatment unit (13a, 13b) is allocated to the at least one treatment station (12a, 12b) which is designed to form a plasma zone (14a, 14b) within the process chamber for treating a surface of the web substrate (15a). The device (10) further contains a transporting system for continuously transporting the web substrate (15a, 15b) through the at least one treatment station (12a, 12b), with an unwind roller (20) and a rewind roller (21), wherein the transporting system defines a transporting path of the web substrate (15a) through the process chamber. The plasma treatment unit (13a, 13b) contains at least one extensive antenna and at least one radiofrequency generator for exciting said extensive antenna to at least one of its resonant frequencies, wherein the transporting system in the process chamber defines a treatment path section for the web substrate (15a), wherein the treatment path section for the web substrate (15a) lies opposite to and spaced from the extensive antenna.