Western Concord - Welcome CGSB Vapour Barrier, Garbage bags, Mattress covers, Monolayer film, Co-extruded film, Plastic bags, Plastic sheets, Polyethylene, Flexible packaging, Blown film extrusion, Cast film extrusio Mercury Plastics, Inc. extrudes, prints, and converts LDPE and LLDPE films to provide custom flexible packaging to a wide variety of agricultural and industrial companies throughout North America. We produce digital plates, mono and co-ex layer polyethylene films, and form-and-fill rollstock as well as a variety of converted bags.