Raw Material Selection for Coextrusion - Practical Experience of the Machinery Supplier, 2003 PLACE Conference & GLOBAL HOT MELT Symposium
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On the one hand multilayer structures, that take advantage of the best properties of each component, are state of art
for sophisticated end-products, on the other hand raw material selections by comparing the melt index of the
different materials only, often result in flow-problems and visible defects in the product. This paper shows, how a
machinery supplier applies different simulation principles to select raw materials for coextrusion in daily work.
After some examples of coextrusion structures and applications, the machinery and rheological principles of
coextrusion are described, finally a case study of the production of a 5-layer structure film before and after
rheological optimization is explained.
Raw Material Selection for Coextrusion - Practical Experience of the Machinery Supplier, 2003 PLACE