Miller's flat bags are made from virgin polyethylene resins, so they meet FDA and USDA requirements for contact with food products. They are manufacured from tubing which is then bottom-sealed for the highest strength possible. All flat and gusset bags 15" wide and under are packed in inner dispenser packs of 100 bags for cleanliness, convenience, and to reduce waste. Flat bags are constructed from Polyethylene. Meet FDA requirements for use in food applications. Bags can be heat sealed to provide freshness or security. Bags are from seamless tubing and bottom sealed for extra strength, no side or slit seals. Low density flat bag is a basic plastic bag designed to handle a wide variety of packaging needs.