Superior tear resistance from a polyamide: Is the flexible packaging world ready for a LLDPA?

Superior tear resistance from a polyamide: Is the flexible packaging world ready for a LLDPA?

Eric Noon
Material Advances and Their Benefits

A new polymer class recently introduced to the market represents a novel development in polyamide chemistry that, when compared to traditional polyamides such as PA6 and PA6/66, recalls the difference between LLDPE and LDPE. Comparatively, LLDPE shows improvement in properties such as puncture and tear. Likewise, this new polyamide, Ultramid® Flex F38L, shows marked improvement in these categories over traditional flexible packaging grade polyamides. However, unlike the LLDPE vs LDPE story in which the latter is easier to process than the former, this brand new polymer does not exhibit a deterioration in processability. This presentation will highlight the mechanical, optical, and barrier differences between the well-established polymers of PA6 and PA6/66 and point to applications where these new properties are expected to be particularly advantageous.