Cristamid^® Copolyamides

Product Overview:

Presentation:

Cristamid^® resins are a new family of patent-protected semi-aromatic co-polyamides composed of chains of aliphatic, cycloaliphatic and aromatic groups.

Processing:

DRYING

Cristamid^® granules are hermetically sealed in 25 kg bags after thorough drying. Allow temperature equalization to ambient conditions before opening bags. Control moisture uptake by minimizing ambient air exposure by use of a transfer system or hopper dryer. Dry with desiccant air at 80° C - 90° C when pellets have been over-exposed to ambient air.

PROCESSING:

Cristamid^® granules are readily processed with standard injection molding and extrusion equipment.

Temperature profile for processing:

Parameters	Cristamid® MS 1100	Cristamid® MS 1700
Injection molding: stock temperature (°C)	245 - 275	275 - 305
temperature of the mold (°C)	20 - 80 *	80 - 135 *
injection pressure	1.000 - 2.000 *	700 - 1.300 *
holding pressure	600 - 1.800 *	200 - 600 *
injection rate	high	medium to high
screw rotation rate	minimum compatible with optimum cycle	minimum compatible with optimum cycle

* according to the length / thickness of the molded part

Extrusion: barrel temperature (°C)	240-260	270-290
hopper temperature (°C)	20-60	20-60
Feed zone (°C)	240	270
compression zone (°C)	250	280
mixing zone (°C)	250	280
die (°C)	250	280
Vacuum Calibration :
die/profile dimension ratio	1.5+0.3 *	1.5+0.3 *
air-gap/profile thickness ratio	1.5 ± 0.3 *	1.5+0.3 *
bath water temperature (°C)	90	90
roller oil temperature (°C)	105	135
pellet drying system	recommended	recommended