Compatibilizer system for extruded polyethylene foam and film

Abstract This paper discusses the processing/product benefits of adding additives to extruded polyethylene (PE) foam and film. Low‐density polyethylene foam (over 30 times expansion) requires adequate cooling to stabilize the melt/gas system for optimal foaming efficiency. The presence of a small po...

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Bibliographic Details
Published inJournal of vinyl & additive technology Vol. 2; no. 3; pp. 258 - 262
Main Author Lee, Shau-Tarng
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.09.1996
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Summary:Abstract This paper discusses the processing/product benefits of adding additives to extruded polyethylene (PE) foam and film. Low‐density polyethylene foam (over 30 times expansion) requires adequate cooling to stabilize the melt/gas system for optimal foaming efficiency. The presence of a small portion of high melting polyethylenes (i.e. LLDPE, HDPE) causes flow instability after cooling, resulting in surface defects in finished products. We found that the addition of metal oxide and fatty acid ester improved processing latitude and foam product quality. This formula was also tested in film processes at various ratios of LD/LLD/HD with promising results. It appears that this formula can allow us to accommodate post consumer resin (PCR) and to take advantage of PE price variations.
Bibliography:istex:5C8A8B352A1DDD6DBBF6C17FD5DE4EC1CEEECC48
ArticleID:VNL10136
ark:/67375/WNG-CNK31DFB-S
ISSN:1083-5601
1548-0585
DOI:10.1002/vnl.10136