PET Wankai WK821

The Smart Choice for Premium Packaging Solutions

Wankai WK-821 is a high-performance, bottle-grade TPA-based polyethylene terephthalate (PET) copolymer engineered for premium food-safe packaging. Designed with low acetaldehyde (AA) content (<1.0 ppm), it preserves the flavor integrity of sensitive beverages such as sparkling water, wine, and juices. The resin offers exceptional clarity (L-value ≥83.0), superior intrinsic viscosity stability (0.830 dL/g ±0.020), and strong chemical resistance—making it ideal for containers holding acidic, alcoholic, or oily products. With a high melting point of 243°C and low moisture content (≤0.20% wt), WK-821 ensures consistent processing, minimal shrinkage, and excellent dimensional stability in demanding applications like thick-walled bottles, medical vials, and edible oil containers. Compliant with FDA standards for food contact and BPA-free, this grade delivers both aesthetic appeal and functional reliability.