Amorphous PET in Packaging Materials
Amorphous PET (APET) packaging materials face inherent challenges in maintaining structural integrity while meeting demanding mechanical requirements. Current APET formulations exhibit intrinsic viscosity ranges of 0.50-0.68 dL/g and often struggle to achieve impact resistance without compromising optical clarity or processing characteristics.
The fundamental challenge lies in enhancing APET's mechanical properties while preserving its essential amorphous characteristics and processability for packaging applications.
This page brings together solutions from recent research—including acrylic ester polymer modifications, composite toughener systems, crystallizable shrink film compositions, and layered barrier architectures. These and other approaches focus on practical improvements in impact strength, processing stability, and recycling compatibility for commercial packaging applications.
1. Composite APET Plastic Packaging Material with Specific Additive Composition for Enhanced Toughness
JIN BAOLI TECHNOLOGY SUZHOU CO LTD, 2015
Toughened APET (amorphous polyethylene terephthalate) plastic packaging material with improved impact resistance and processability. The material composition includes APET (55-70%), PEN (15-30%), PBT (3-7%), compound flexibilizer (5-15%), and a composite toughener made of chlorinated polyethylene (10-20%), flexibilizer PTW30-40%, and MBS (40-60%). The composite toughener enhances toughness without degrading APET's environmental benefits. The method involves mixing and extruding the components at controlled temperatures.
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