Results obtained with new water based barrier coatings for paper and paperboard are presented. These coatings include polyester-based coatings, dispersions containing hydrophobic monomers and coatings made from biodegradable polymers. Coatings were tested as such, some were filled with talc and some were used as an additive in a commercial polymer dispersion. Relatively good barrier values were achieved. However, work needs to be done in optimizing the properties of e.g. biodegradable polymers for water based coatings. The object of this study was also to compare different fillers and additives in water based barrier coatings. The coating performance can be controlled by a suitable choice of fillers. Folding of filled coatings destroys the barrier due to pinholes and cracks. Certain additives can improve the barrier performance of the coatings. However, filler type and filler addition level are often the dominating factors as far as barrier properties are concerned.
|Number of pages||10|
|Publication status||Published - 2000|
|MoE publication type||Not Eligible|
|Event||54th Appita Annual Conference - Melbourne, Australia|
Duration: 3 Apr 2000 → 6 Apr 2000
|Conference||54th Appita Annual Conference|
|Period||3/04/00 → 6/04/00|