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DuPont Packaging: Resin for peelable seals on retortable polypropylene packages

Appeel® 22D843 lidding sealant resin from DuPont Packaging & Industrial Polymers is pellet-blended with a polypropylene sealant resin solution to provide converters with an easy and effective way to make peelable lids for retortable polypropylene (PP) packages.
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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.

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