WK-881 PET is a kind of PET polymer material which is widely used in the bottles of all kinds of eparkling beverage and CSD bottles. The finished product can effectively prevent the leakage of CO₂ in sparkling beverage bottles.
| 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 |
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