A mathematical model was developed to simulate the flow of a polymer melt through a spiral mandrel distribution system The model uses the method of lumped parameters over a finite number of control volumes to obtain volumetric flow rates and pressures throughout the flow field A qualitative agreement between the model and commercial equipment was found Experimental measurements of thick ness variation from the spiral distribution svstem indicated good quantitative agreement.
Vlcek, J., V. Kral and K. Kouba. "The Calculation of the Form of a Spiral Mandrel," Plastics and Rubber Proc and App., 4:309-315 (1984)
2.
Saillard, P. and J.F. Agassant. "Polymer Flow in a Spiral Mandrel Die for Tubular Films ;' Poly. Proc. Eng., 2.37-52 (1984).
3.
Rauwendaal, C. "Flow Distribution in Spiral Mandrel Dies," ANTEC, 917-923 (1986); see also Polym. Eng Sci , 27:186-191 (1987).
4.
Proctor, B. "Flow Analysis in Extrusion Dies," SPE Journal, 28:34-41 (1972).
5.
Perdikoulias, J., J. Vlcek and J. Vlchopoulos. "Polymer Flow through Spiral Mandrel Dies: A Comparison of Models," Adv. Polym. Tech , 7:333-341 (1987).
6.
Vlcek, J., J. Perdikoulias and J. Vlachopoulos . "Determination of Output Uniformity from Spiral Mandrel Dies," Intern. Polym. Proc., 2:174-181 (1988).
7.
Perdikoulias, J. and C. Tzoganakis.Flow Visualization in Spiral Mandrel Dies, McMaster University/Brampton Engineering video tape (1987); presented at ANTEC '88 and TAPPI PLC (1988).