PET(WK-881)
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PET
WK-881 for CSD bottle grade
"WANKAI" Brand "WK881" PET resin bottle grade is TPA-based polyethylene terephthalic copolymer. It is a high molecular weight polymer for general use in manufacturing containers. It can be used in the production of making packing bottles for carbonated soft drink like cola and 3-gallon big bottles.
Bottles made from WK881 resin can meet the requirement of high optical clarity and glossing, good barrier properties to oxygen, carbon dioxide and moisture. And prevent the possible bottle cracking during transportation.
| CAS No. |
25038-59-9 |
|
HS Code |
3921905050 |
| Parameter | Unit | Value | Limits |
| Intrinsic Viscosity (Foreign Trade) (I.V.) |
dl/g | 0.87 | ±0.02 |
| Acetaldehyde Content |
ppm | 1 | Max |
| Color(L-value) | - | 83 | 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.
WK-881 is optimized for high-temperature processes, which makes it particularly effective in hot-filling or high-pressure applications.
Similar to WK-851, it ensures no off-flavor in bottled beverages, maintaining product quality.
The material offers excellent strength, pressure resistance, and resistance to stress cracking, making it ideal for high-pressure carbonated beverages.
It ensures smooth production lines with stable performance in preform and bottle manufacturing, leading to consistent bottle quality.
