Hot-filled Bottle Grade PET Resin
Product Introduction
Hot-Filled bottle grade polyester chips have been developed and produced specially for hot-filling bottles according to that tea drinks、fruit-juice drinks and other medium type drinks require to be hot bottled for sterilization.
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The brand of product features low heavy metal content, low content of acetaldehyde、good color value、 Stable viscosity and good for processing. With a unique process recipe and advanced production technology, the product, when being thermoformed in SIPA、SIDEL、ASB etc. primary bottle-making machines under general conditions, has high tropism rate, stable crystallinity and good fluidity with low stress-releasing rate in the whole bottle, stable thermal contraction rate and high finished product rate in making bottles, can satisfy the requirement of being bottled at about 90°C and protect drinks from discoloration or oxidization in storage period and prevent the deformation of the bottles.
Techncal Index
Ttem |
Unit |
Index |
Test method |
|
Intrinsic Viscosity (Foreign Trade) |
dL/g |
0.800±0.02 |
GB17931 |
|
Content of acetaldehyde |
ppm |
<1 |
Gas chromatography |
|
Color value |
L |
— |
>82 |
HunterLab |
b |
— |
<1 |
HunterLab |
|
Carboxyl end group |
mmol/kg |
<30 |
Photometric titration |
|
Melting point |
°C |
250 ±2 |
DSC |
|
Water content |
wt% |
<0.2 |
Weight method |
|
Powder dust |
PPm |
<100 |
Weight method |
|
Wt. of 100 chips |
g |
1,55±0.10 |
Weight method |
Typical Processing Conditions
Drying is necessary prior to the melt processing to prevent the resin from hydrolysis. Typical drying conditions are an air temperature of 165-185°C , 4-6 hours residence time, dew-point temperature below -40 0C .
Typical barrel temperature about 285-298°C .