Kwik Fill bags are compatible with all automatic packaging equipment and are packaged on an industry standard core. Kwik-Fill bags are made with LK Packaging exclusive Tuf-R resin for the added strength that is needed to withstand the stresses of automated packaging. Kwik-Fill  bags are pre-opened for easy loading and feature precise perforating for easy separation, so they also work great for manual applications. Because this film is made from 100% virgin low density polyethylene, it meets FDA requirements for food contact.. Kwik-Fill bags are made with LK Packaging exclusive Tuf-R resin for added strength. Bags are from seamless tubing and bottom sealed for extra strength, with no side slit seals. Industry standard core makes them compatible with all automatic packaging equipment. Precise perforations for proper bag performance with automated equipment. Work excellently in manual packaging operations. Meets FDA requirements for food contact