A1 Journal article (refereed), original research

Thermal and mechanical durability of starch-based dual polymer coatings in the press forming of paperboard

Publication Details
Authors: Tanninen Panu, Saukkonen Esa, Lindell Henry, Backfolk Kaj
Publication year: 2014
Language: English
Related Journal or Series Information: Packaging Technology and Science
Volume number: 27
Issue number: 5
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication

The runnability and convertibility of biopolymer dispersion-coated paperboard were determined using a novel adjustable packaging line equippedwith a tray-pressing mould. Commercial paperboard was dispersion barrier coated on the back-side using a dual polymer system containing both asynthetic and a renewable biopolymer, of which the latter was the main component in the dispersion. The effect of the addition of a high-aspectratioplaty pigment and synthetic polymer on both the grease resistance and the convertibility of the product was evaluated in addition to theevaluation of runnability and crack resistance in tray pressing and die cutting. The addition of synthetic polymer into bio-based dispersion improvedthe elastic properties, plasticity and, subsequently, mechanical convertibility of the product. Moderate additions of the synthetic polymer providedimproved grease resistance for the biopolymer coatings. It revealed that the addition of synthetic polymer was sufficient in providing improvedbarrier properties, although the chemical compatibility and process window for the convertibility need to be considered. In addition to mechanicalstability, the heat stability of the substrate needs to be investigated

Research Areas

Last updated on 2017-22-03 at 16:08