Optimization of the polymer melt thickness distribution on a cable of large diameter

✍ Scribed by D. M. Hanssen

• Publisher: Society for Plastic Engineers
• Year: 1991
• Tongue: English
• Weight: 553 KB
• Volume: 31
• Category: Article
• ISSN: 0032-3888
• DOI: 10.1002/pen.760311602

✦ Synopsis

Abstract

A numerical method for analysis of isothermal non‐Newtonian polymer melt flow in narrow channels of complex shape is described. This method is applied to the flow in a cable‐covering crosshead. The volumetric flow field is calculated and the melt thickness distribution proves to be strongly nonuniform. A series of modified cannel geometries are suggested and the volumetric flow rates in these channels are calculated. One of these channels, which gives a substantially more uniform unsulation thickness, is shown as an improved channel design.