PET(WK-851)
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PET
WK-851 for fast reheat grade
"WANKAI" Brand "WK851" PET resin bottle grade is TPA-based polyethylene terephthalic copolymer. It is a high molecular weight polymer giving enhanced properties for reheat blow stage of bottle production.
Keeping the similar properties of WK881, it is characterized by lower energy consumption but higher production rate during bottle production. Because of the additive,it looks darker, but the final bottle keeps the clarity as WK881's.
| CAS No. |
25038-59-9 |
|
HS Code |
3921905050 |
| Parameter | Unit | Value | Limits |
| Intrinsic Viscosity (Foreign Trade) (I.V.) |
dl/g | 0.875 | ±0.02 |
| Acetaldehyde Content |
ppm | 1 | Max |
| Color(L-value) | - | 72 | Min |
| Color(B-value) | - | -0.5 | Max |
| Melting point | ℃ | 243 | ±2 |
| Moisture Content |
wt% | 0.4 | Max |
◆ IMPORTANT NOTICE FOR USE IN PROCESSING
Drying
Drying is necessary prior to the melt processing to prevent the resin from hydrolysis. Typical drying conditions are an air temperature of 160-175℃, 4-6 hours residence time.
Ensures no undesirable flavor or smell transfer to beverages.
Provides excellent resistance to stress cracking and effective prevention of CO₂ leakage.
Increases production speed, making it highly efficient for large-scale manufacturing.
Suitable for a variety of processing conditions while delivering stable molecular weight.
