Wankai PET WK-881 is a high-quality bottle-grade polyethylene terephthalate resin produced by using the advanced solid-state polymerization (SSP) technology. It offers excellent melt strength and processing stability, ensuring high production efficiency and superior clarity in injection and stretch blow molding processes. The final products exhibit high gloss, transparency, and no off-taste or odor. WK-881 is specifically designed for bottle and container applications such as mineral water bottles, carbonated beverage bottles, edible oil bottles, and cosmetic packaging.

Parameter
Unit
Value
Test method
Intrinsic Viscosity
dL/g
0.870±0.015
Q/WK007
Acetaldehyde Content
μg/g
≤1.0
Q/WK007
Color (L-value)
—
≥83.0
Q/WK007
Color (b-value)
—
≤-0.5
Q/WK007
Peak Temperature when Melting（DSC by Nitrogen）
°C
244± 2
Q/WK007
Moisture Content
%
≤0.20
Q/WK007

Key Features and Advantages of PET WK-881

  • High Clarity and Gloss. WK-881 PET resin provides excellent transparency and brightness, producing bottles with crystal-clear appearance and minimal color tone.
  • Low Acetaldehyde (AA ≤ 1 ppm). Ensures beverage flavor integrity by preventing unpleasant taste or odor migration.
  • Excellent Mechanical and Thermal Properties. High tensile strength, good toughness, and superior dimensional stability under high temperatures.
  • Good Processability. Balanced viscosity ensures smooth melting and stable flow, suitable for high-speed injection and stretch blow molding.
  • Safe and Environmentally Friendly. Non-toxic, odor-free, and fully recyclable; compliant with FDA and EFSA food-contact safety standards.

Main Applications

PET WK-881 resin is widely used for various rigid and transparent packaging products, including:

  • Beverage Packaging: Bottles for mineral water, carbonated drinks, juices, tea, and functional beverages
  • Food Packaging: Edible oil bottles, condiment containers, sauce bottles
  • Personal Care Packaging: Shampoo bottles, detergent bottles, cosmetic containers
  • Industrial Packaging: Containers for medical, chemical, and household cleaning products
  • Other Uses: PET sheets, straps, and composite packaging materials

Packaging and Storage

  • Packaging: 25 kg woven bag with PE inner liner
  • Storage: Store in a cool, dry, and ventilated area; avoid moisture and direct sunlight
  • Shelf Life: 12 months from the manufacturing date under proper conditions
  • Transportation: Non-hazardous material; protect from rain, contamination, and physical damage during transport

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