Coextrusion Control

Modified on Sunday, 01 February 2015 10:10 PM by mpieler — Categorized as: Extrusion Hints

Coextrusion Control
Vol.20 #3, Dec. 1993

The onset of melt disturbance in coextrusion is generally related to poor viscosity match of the skin and core.

In coextrusion, the outside layer must be lower viscosity than the core. This can be achieved by prudent melt flow selection, melt temperature control, and to a lesser extent, die temperature and internal design.

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