Bubbles seen through the Window
Low
Melt Pressure - Medium Melt Pressure - High Melt Pressure
The In-Line Solubility measurement apparatus at PPI consists of a custom designed single screw extruder, Physical Blowing Agent injection accessories, adjustable pressure control valve, optical window and video equipment. Metered quantities of polymer and physical blowing agent are fed and mixed into the extruder. A travelling microscope, video camera, TV monitor and VCR are used to monitor the quality and opacity of melt-physical blowing agent through the optical window. The melt pressure at the window is controlled by a manually controlled valve, which is placed downstream. The melt pressure, temperature and the blowing agent flowrate are menitored and recorded digitally.
Schematics of the Apparatus
Results:
Experiments were conducted with Polyolefins, Polystyrene, Polesters and various other polymers with environmentally friendly blowing agents such as Nitrogen, Carbon dioxide and argon. Results are published in a number of technical journals and can be found in the
publication section.
For more information please call
Tel. # (973) 642 4996
at
New Jersey Institute of Technology
Dept. PEC/
CMS218 Central Avenue
Newark, NJ 07102