Heat-Seal Ability and Fold Cracking Resistance of Kaolin-Filled Styrene-Butadiene-Based Aqueous Dispersions for Paper-Based Packaging

Dispersion coatings are offered as alternative solutions to extrusion coating technology for paper-based packaging. In addition providing barrier properties, waterborne dispersions may implement the processing and converting properties of coated substrates, which extreme interest an effective transfer industry. this work, styrene-butadiene-based aqueous were formulated considering different amounts kaolin pigment. The authors assessed heat-seal ability, fold cracking resistance, blocking tendency, comparing results against commercial dispersion grades. Kaolin content dominated sealing behavior experimental formulations, changing minimum temperature from 80 °C >140 0% 60% solid content, respectively. On contrary, grades mostly affected by temperature. Additionally, despite low latex glass (0 °C), formulations generally showed little, if any, blocking. downside, increasing eases cracking, showing a magnitude according direction coat orientation yet achieving higher moisture compared both folded unfolded samples.