Sigma Plastics Group | Quality, Innovation and Expertise in Flexible Packaging SIGMA PLASTICS GROUP, SIGMA SPECIALTY FILMS, CERTIFIED MINORITY OWNED BUSINESS, LARGEST PLASTICS MANUFACTURER, MONO LAYER BAGS, MONO LAYER FILM, MONO LAYER STRETCH FILM, COEXTRUDED BAGS, COEXTRUDED FILM, COEXTUDED STRETCH FILM, BLOWN FILMS, CAST FILMS, PRE STRETCH FILM, HAND WRAP FILM, MACHINE WRAP FILM, MONO LAYER BAGS, MONO LAYER LINERS, MONO LAYER COVERS, MONO LAYER SHEETING, COEXTRUDED BAGS, COEXTRUDED LINERS, COEXTRUDED COVERS, COEXTRUDED SHEETING, MONO LAYER SHRINK FILMS, MONO FFS FILMS, BARRIER FILMS, LAMINATION FILMS, SHRINK HOOD FILMS, AUTO INSERT BAGS, EMBOSSED FILMS, LID STOCK, BREATHABLE FILMS, AGRICULTURAL FILMS, BIO-HAZARDOUS WASTE CAN LINERS, GARMENT BAGS, MERCHANDISE BAGS, PRODUCE BAGS, DRAWSTRING BAGS, T-SHIRT BAGS, INDUSTRIAL PACKAGING, RETAIL BAGS, STRETCH FILMS, POLY, POLY BAGS AND FILM, POLYETHYLENE BAGS, POLYETHYLENE FILM, PLASTIC CAN LINERS, PLASTIC GARBAGE BAGS, PLASTIC TRASH BAGS, POLYETHYLENE, SPECIALIZED PLASTIC FILMS, PLASTIC MADE IN THE USA, FLEXIBLE PACKAGING As North America’s largest privately held film manufacturer, Sigma Plastics Group is uniquely positioned to meet a wide range of extruded polyethylene product needs.