The Problem of Die Drool in the Extrusion of Recycled Polyethylene

Present understanding of the formation of die drool is reported in light of current developments in materials for blown film polyethylene (PE). Two series of samples were collected from a blown film line, and the material from the die drool and the die channel, or blown film, were analysed separatel...

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Published in:Progress in rubber, plastics and recycling technology plastics and recycling technology, 2009-01, Vol.25 (4), p.199-212
Main Authors: BRACHET, P, HINRICHSEN, E. L, LARSEN, Å, BJØRNDAL, L. K, BRENDRYEN, F, LIA, T
Format: Article
Language:English
Subjects:
Applied sciences
Dies (Metalworking)
Equipment and supplies
Exact sciences and technology
Extrusion process
Maintenance and repair
Materials science
Polyethylene
Polyethylene films
Polymer industry, paints, wood
Polymer processing
Production processes
Recycling
Technology of polymers
Waste management
Waste treatment
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cited_by cdi_FETCH-LOGICAL-c416t-7f3742b385d127681c67bd8fffad4979195c6e76135bbbc480abc37d59fb90a03
cites cdi_FETCH-LOGICAL-c416t-7f3742b385d127681c67bd8fffad4979195c6e76135bbbc480abc37d59fb90a03
container_end_page 212
container_issue 4
container_start_page 199
container_title Progress in rubber, plastics and recycling technology
container_volume 25
creator BRACHET, P
HINRICHSEN, E. L
LARSEN, Å
BJØRNDAL, L. K
BRENDRYEN, F
LIA, T
description Present understanding of the formation of die drool is reported in light of current developments in materials for blown film polyethylene (PE). Two series of samples were collected from a blown film line, and the material from the die drool and the die channel, or blown film, were analysed separately. The techniques used included thermal analysis, melt rheology, filtration of dissolved material, and X-ray diffraction. Die drool was found to consist of segregated material, with the segregation depending on the content of high-molecular-weight branched polyethylene or impurities. As the presence of these PE materials may increase, it might be advisable for processors of recycled PE film to take prior actions to limit problems.
doi_str_mv 10.1177/147776060902500401
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1478-2413
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source Sage Journals Online
subjects Applied sciences
Dies (Metalworking)
Equipment and supplies
Exact sciences and technology
Extrusion process
Maintenance and repair
Materials science
Polyethylene
Polyethylene films
Polymer industry, paints, wood
Polymer processing
Production processes
Recycling
Technology of polymers
Waste management
Waste treatment
title The Problem of Die Drool in the Extrusion of Recycled Polyethylene
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