Paper-Plastic Lamination Compound (PLA/PBAT)

About This Product

A PBAT-based compound with polylactic acid, supplied as a pellet for extrusion coating and lamination. The poly(butylene adipate-co-terephthalate) majority gives a low-melting polyester that flows readily at coating temperature and stays flexible over a crease or a score, while the PLA addition raises stiffness and surface hardness in the coating. Paper coated with polyethylene is difficult to repulp and difficult to compost, which leaves coated board in an awkward position in both waste streams. A biodegradable coating resin changes that calculation. Extrusion coating is an extensional process: a molten curtain leaves a flat die and is drawn to a fraction of the die gap before meeting the web at the nip, so the melt must thin evenly at line speed without draw resonance or edge weave, yet stay fluid enough to wet the fibre and key into it before the chill roll freezes it. This compound is formulated for extrusion coating and lamination onto paper and board: adhesion to the substrate, draw-down at coating weights, and edge stability on the line. Coating weight and the resulting barrier are set against the pack and its contents. Supplied as a raw material for processing on the buyer's own line. We do not produce finished articles. It is used in coated paper cups and board, in food wrap and liners and in paper-plastic laminates. Bio Green Chem supplies the paper-plastic lamination compound to specification on coating weight, substrate and board grade, line speed and lot size.