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Analysis of the free surface instabilities in extrusion and coextrusion flows for metallocene based polyolefins

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dc.title Analysis of the free surface instabilities in extrusion and coextrusion flows for metallocene based polyolefins en
dc.contributor.author Zatloukal, Martin
dc.contributor.author Chaloupková, Kateřina
dc.contributor.author Witte, Johan D.
dc.contributor.author Vlček, Jiří
dc.relation.ispartof TAPPI European PLACE Conference
dc.identifier.isbn 9781605605098
dc.date.issued 2007
utb.relation.volume 2
dc.citation.spage 1055
dc.citation.epage 1109
dc.event.title 11th TAPPI European Place Conference 2007
dc.event.location Athens
utb.event.state-en Greece
utb.event.state-cs Řecko
dc.event.sdate 2007-05-14
dc.event.edate 2007-05-16
dc.type conferenceObject
dc.language.iso en
dc.subject Die drool en
dc.subject FEM modeling en
dc.subject Negative pressure en
dc.description.abstract The effect of die design and wall slip on the die drool phenomenon was investigated for metallocene based LLDPE. It has been found that die exit opening and wall slip can significantly reduce the die drool phenomenon. Moreover, theoretical research has revealed that die drool onset can be explained by the negative/non-monotonic pressure profile generated inside the die and/or at the die exit region due to melt elasticity. In the second part of the paper, recently proposed new slip model based on 'effective continuum methods' was developed and used for investigation of process aids interactions with polymer melts in single as well as multi-layer flows. Specific attention has been paid to understanding the role of process aids on stabilization of the zig-zag type of interfacial instabilities in film blowing coextrusion. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1004960
utb.identifier.scopus 2-s2.0-65249127054
utb.source d-scopus
dc.date.accessioned 2015-06-04T12:56:17Z
dc.date.available 2015-06-04T12:56:17Z
utb.contributor.internalauthor Zatloukal, Martin
utb.contributor.internalauthor Chaloupková, Kateřina
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