DuPont Packaging: Resin for peelable seals on retortable polypropylene packages

After blending, Appeel 22D843 is then processed to make a lidding structure or sealant layer in conventional extrusion or coextrusion equipment designed for polyolefin resins.  Allows converters to tailor peel force and achieve consistent sealing and peeling performance with a preformulated masterbatch.  The resin is typically blended with PP at addition rates of 20 to 40% by weight.  The proportion of Appeel® in the blend determines peel strength.  Lower addition rates result in higher peel force and vice versa.