Walki's new process is possible through a dry production process, involving no liquid chemicals and using paper as the substrate. It also allows for computer to antenna production and extremely accurate laser cutting of the circuit board patterns.The traditional way of producing RFID antennas by etching has for a long period undergone only modest development. Walki, a leading producer of technical laminates, looked for ways to simplify the manufacturing process, while making use of the company's knowledge in lamination.“We think that Walki-4E technology is the first feasible alternative to etching and that it will bring new dimensions of cost efficiency and sustainability to the industry,” says Sami Liponkoski, Business Line Manager at Walki.In brief, the idea is to make a special laminate of aluminium and paper substrate, where the aluminium foil is cut in patterns using a laser.The technology can be used for any production of flexible circuits boards, ranging from RFID antennas to boards for radiators and flexible displays. The first product to be launched using Walki-4E technology is Walki-Pantenna, a UHF RFID antenna.