Effect of die exit geometry on internal die drool phenomenon during linear HDPE melt extrusion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F13%3A43869669" target="_blank" >RIV/70883521:28610/13:43869669 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0017931012007612" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0017931012007612</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.09.059" target="_blank" >10.1016/j.ijheatmasstransfer.2012.09.059</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of die exit geometry on internal die drool phenomenon during linear HDPE melt extrusion

Popis výsledku v původním jazyce

In this work, the effect of die exit design on the internal die drool phenomenon occurring during extrusion of HDPE has been experimentally investigated. It has been revealed, that firstly, the effect of flared length and die exit angle on the internal die drool intensity during extrusion of HDPE has non-monotonic character and secondly, flared dies are more stabilizing in comparison with chamfered dies. It has been suggested that suppression mechanism of the internal die drool phenomenon through die exit modification can be understood through the balance between the melt pressure/normal stresses at the die exit, adhesion at metal wall/flowing melt interface and extensional stress induced by the extrudate draw off, which can lead to flow situation at which low molecular weight species are effectively removed from the die exit region by the moving extrudate and only small portion of them remains at the die exit face.

Název v anglickém jazyce

Effect of die exit geometry on internal die drool phenomenon during linear HDPE melt extrusion

Popis výsledku anglicky

In this work, the effect of die exit design on the internal die drool phenomenon occurring during extrusion of HDPE has been experimentally investigated. It has been revealed, that firstly, the effect of flared length and die exit angle on the internal die drool intensity during extrusion of HDPE has non-monotonic character and secondly, flared dies are more stabilizing in comparison with chamfered dies. It has been suggested that suppression mechanism of the internal die drool phenomenon through die exit modification can be understood through the balance between the melt pressure/normal stresses at the die exit, adhesion at metal wall/flowing melt interface and extensional stress induced by the extrudate draw off, which can lead to flow situation at which low molecular weight species are effectively removed from the die exit region by the moving extrudate and only small portion of them remains at the die exit face.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Heat and Mass Transfer

ISSN

0017-9310

e-ISSN

—

Svazek periodika

56

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

667-673

Kód UT WoS článku

000312625200061

EID výsledku v databázi Scopus

—