Conductive Rubber Vacuum Blanket
Original Publication Date: 1985-Jan-01
Included in the Prior Art Database: 2005-Feb-18
Vacuum blankets are used for a variety of applications including holding printed circuit boards to glass plates during exposure of the circuit boards to ultraviolet light. Static charge can build up in a vacuum blanket; the static charge may attract dust which in turn may interfere with the exposure of the circuit board to ultraviolet light. The present invention is directed to a conductive rubber vacuum blanket which eliminates the problem of static build up. The conductive rubber vacuum blanket is formed from a flat rubber sheet which is surrounded by a lip. The lip is made from rubber to which conductive carbon black has been added. Adding conductive carbon black to the rubber forming the lip allows static charges to bleed off.