Kwik Fill® bags are compatible with all automatic packaging equipment and are packaged on an industry standard core.  Kwik-Fill® bags are made with Tuf-R® resin for the added strength that’s needed to withstand the stresses of automated packaging equipment. 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 is an excellent choice for use in food applications.