Polyester chips CZ-318
Type
“JADE” Brand ,Copolyester.
Description
“JADE” Brand Copolyester “CZ-318″ 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 transparency and can satisfy the thicker and more varieties processing requirements of small-package edible oil bottles、liquor bottles、medicine bottles and sheets, possessing the features of low processing temperature, wide scope in processing, excellent transparency, high strength and high finished product rate.
Applications
It is developed and produced according to the higher strength、 isolation、transparency and better processing feature etc. special using properties required by bottles for carbonated drinks, small-package edible oil bottles liquor bottles、 medicine bottles、 washing cosmetics bottles 、 wild-mouth bottles and PET sheets.
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 275-295°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 |