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Numerical simulation of coextrusion and film casting

✍ Scribed by A. Fortin; P. Carrier; Y. Demay

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
1021 KB
Volume
20
Category
Article
ISSN
0271-2091

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The film casting process is widely used to produce polymer film: a molten polymer is extruded through a flat die, then stretched in air and cooled on a chill roll. This study is devoted to the extensional flow between the die and the chill roll. The film shows a lateral neck-in as well as an inhomog

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## Abstract it‐Polypropylene films were coextruded by using dies of varying extrusion draw ratio (EDR) from 2–10. Among the resulting films, the film coextruded at EDR 9 possesses the most attractive superstructure and the highest modulus. The dynamic modulus at room temperature was 7 GPa and an Ξ±~