Electronics such as membrane switches have been screenprinted for decades, and a few of these printers have branched out into the field of printed electronics.   One success story is Sytek Enterprises Inc., a North Vancouver, BC manufacturer of membrane switches, graphic overlays, labels and gaskets. The 33-year-old company saw an opportunity to expand into the field of printed electronics, and launched Tangio Printed Electronics eight years ago.   Tangio Printed Electronics, a division of Sytek Enterprises, is focused on R&D of printed electronics, particularly force sensing resistors, and the company has enjoyed much success in the field.   “Tangio is built on a 30-year-old foundation in screenprinting electronics,” said Kirk Hutton, sales and marketing manager for Tangio. “Over the past eight years, we have specialized in printing force sensing resistors.   Its experience in printing unique projects is one key to Tangio’s succe