Polyester chips CZ-302
Type
“JADE” Brand ，Copolyester.
Description
“JADE” Brand Copolyester “CZ-302″ bottle grade polyester chips features low heavy metal content, low content of acetaldehyde、good color value、 stable viscosity. With a unique process recipe and advanced production technology, the product possesses excellent processing features, low processing temperature, wide scope in processing, excellent transparency and high in finished product rate. In making bottles, the product has a small degradation and low content of acetaldehyde. While ensuring safety and hygiene, it can effectively keep the respectively unique taste of purified water、mineral water and distilled water.
Applications
They are suitable for making the packing bottles for pure water、natural mineral water、distilled water, drinking water、flavoring and candy containers, makeup’s bottle and PET sheet material
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 160-180°C , 4-6 hours residence time, dew-point temperature below -40 ℃ . Typical barrel temperature about 275-293°C.
|
No. |
ITEMS DESCRIBE |
UNIT |
INDEX |
TEST METHOD |
|
01 |
Intrinsic Viscosity (Foreign Trade) |
dL/g |
0.850±0.02 |
GB17931 |
|
02 |
Content of acetaldehyde |
ppm |
≤1 |
Gas chromatography |
|
03 |
Color value L |
— |
≥82 |
Hunter Lab |
|
04 |
Color value b |
— |
≤1 |
Hunter Lab |
|
05 |
Carboxyl end group |
mmol/kg |
≤30 |
Photometric titration |
|
06 |
Melting point |
°C |
243 ±2 |
DSC |
|
07 |
Water content |
wt% |
≤0.2 |
Weight method |
|
08 |
Powder dust |
PPm |
≤100 |
Weight method |
|
09 |
Wt. of 100 chips |
g |
1,55±0.10 |
Weight method |
