Wankai WK‑851 PET Resin for Sparkling Beverage & CSD Bottles

Wankai WK‑851 is a bottle-grade polyethylene terephthalate (PET) resin, specifically designed for manufacturing high-quality carbonated beverage bottles and sparkling drink containers. It is a high-molecular-weight polymer produced from terephthalic acid (TPA) and ethylene glycol, supplied in granular or chip form.

Technical Properties of Wankai WK‑851 Resin

Property	Specification
Intrinsic Viscosity (IV)	0.880 ± 0.015 dL/g
Acetaldehyde (AA) Content	≤ 1.0 µg/g (low volatility, safe for food and beverages)
Melting Peak Temperature	245 ± 2 °C (by DSC under nitrogen)
Moisture Content	≤ 0.20%
Color Value	L ≥ 72.0 (high brightness) / b ≤ –0.5 (slightly bluish tone)

Performance Advantages

High intrinsic viscosity (IV) → enhanced strength, toughness, and overall stability.
Low acetaldehyde → ensures beverage safety and taste integrity.
Excellent transparency and color stability → bright, clear bottles.
Good processing performance → efficient blow molding and high production throughput.
Strong CO₂ barrier and pressure resistance → maintains carbonation and prevents leakage.
Environmentally friendly and recyclable.

Main Applications

WK‑851 PET resin is mainly used for carbonated beverage bottles, sparkling drink containers, other pressurized beverage bottles requiring high CO₂ barrier and pressure resistance.

Its excellent clarity, strength, and low odor make it ideal for beverage packaging. The resin is suitable for blow molding or injection-blow molding processes. Compared with glass or other plastics, WK‑851 PET bottles are lightweight, impact-resistant, easy to process, and recyclable.

Related Grades

Wankai produces other PET grades including WK‑801, WK‑811, WK‑821, and WK‑881. These grades vary in IV, melting point, and recommended applications. Wankai WK‑851 is specifically optimized for carbonated and sparkling beverage bottles, providing excellent mechanical properties, clarity, and low acetaldehyde levels.