INTERFACE DETERMINATION IN MULTILAYER EXTRUSION.

Coextrusion has become an attractive means of economically producing multilayered films and fibers. One of the major problems that this technology faces however is the control and prediction of the layer structure in the final product. The interface position not only affects the quality of the product but also can affect the die swell due to the different shearing history of the fluids. It is well established experimentally that in bicomponent …