PP Impact Copolymer for TWIM Packaging

A PP impact copolymer specially developed for thin-wall injection molded (TWIM) packaging is newly available from INVISTA Polypropylene. AP5197-LV PP was joint developed with Milliken & Company using Milliken’s DeltaMax performance modifier. The new grade is FDA compliant for food-contact applications, and is well suited for refrigerated packaging such as large yogurt cups, and dip and deli salad containers.

This impact copolymer is said to surpass incumbent PP materials in TWIM packaging applications by reportedly delivering superior impact strength, high melt flow and good stiffness simultaneously, without any trade-offs typically seen among these properties. Its high melt flow rate supports thin-wall designs and increases throughput while reducing energy use while its high impact strength at low temperatures protects against breakage of refrigerated packaging when dropped by consumers or workers. Additionally, its high stiffness allows packages to be stored, transported, and shelved in taller stacks to conserve space.

Calling it another milestone in the company’s successful collaboration with Milliken, INVISTA’s director of PP R&D Pierre Donaldson said, “The balanced performance of Milliken’s additive technology enhances the resin architecture of our new AP5195-LV PP impact copolymer. By excelling in impact, melt flow and stiffness, our novel PP material can make it easier for converters to produce strong yet lightweight packaging, boost productivity, and reduce energy and plastic use to support environmental efforts.”