Abstract
In this study, the effect of heat treatment on barrier and functionality
of polyolefin-coated papers was investigated. The aim was to find the
optimal improvements on barrier without losing the applicability of the
materials due to physical damages. The results of the study proved
considerable improvement in barrier characteristics of the structures.
Both water vapor and oxygen transmission rates of LDPE-coatings
decreased linearly following the set-temperature until 200°C. At this
point, the treatment caused a continuing decrease in oxygen transmission
achieving 10 × lower transmission levels than the untreated structure,
whereas moisture transport faced corresponding but lower increase. This
was considered to be caused by the difference in diameter of the H2O and O2
molecules; the smaller water molecules are able to penetrate between
spherulites, whose size increased due to higher treatment temperature
followed by cooling.
| Original language | English |
|---|---|
| Pages (from-to) | 561 - 569 |
| Number of pages | 9 |
| Journal | Polymer-Plastics Technology and Engineering |
| Volume | 48 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2009 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Extrusion coating
- heat treatment
- paper
- polyolefix