TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Statistical modeling of water vapor transmission rates for extrusion-coated papers

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoTAPPI 2008 PLACE Conference: Innovations in Flexible Consumer Packaging
TilaJulkaistu - 2008
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaTAPPI 2008 PLACE Conference: Innovations in Flexible Consumer Packaging - Portsmouth, VA, Yhdysvallat
Kesto: 14 syyskuuta 200817 syyskuuta 2008

Conference

ConferenceTAPPI 2008 PLACE Conference: Innovations in Flexible Consumer Packaging
MaaYhdysvallat
KaupunkiPortsmouth, VA
Ajanjakso14/09/0817/09/08

Tiivistelmä

The testing of water vapor transmission rates (WVTR) for extrusion-coated papers can be a time-consuming task for laboratories. This study introduces a prediction model that provides an effective and helpful option to laboratory measurements. In practice, the WVTR of an extrusion-coated paper is affected by three main factors: coating weight (or squared mass) of the polymer concerned, the temperature and moisture content of the immediate surroundings. The prediction model determines mathematical connections between the WVTR and these variables covering the detected region of experimental WVTR results with a continuous estimation. By using mixing ratio as a variable of humidity, the model was found to provide accurate estimation across the field of experiments. As a result of this study, a practical computer program, which predicts the WVTR of a multilayer extrusion-coated paper as a function of user-defined temperature and relative humidity values and the layer structure of the coating, was developed. APPLICATION STATEMENT: This work shows how WVTR of a multilayer extrusion-coated paper can be estimated with the help of a statistical prediction model.