If I understand you correctly, you want to start cutting vinyl for signs. Not meant to be a plug but www.signwarehouse.com. They can explain it better than I but here is the gist.
Pressure sensitive, linered, sign vinyl is cut from pressure sensitive roll using a cutting plotter and waste is "weeded" out. A wide masking tape is applied to the face of the vinyl image so the backer sheet can be removed exposing the vinyl's permanent adhesive. The vinyl (and masking sheet) is applied to the sign surface, squeegeed to remove air and force contact, and then the masking sheet is removed leaving the vinyl image on the sign.
It's actually a lot of fun and rewarding. Try the link, a vinyl cutter will probably work better than laser but who am I? Can't say I've every een anybody try it.
Good luck, Ken