ACTEGA Rhenania has developed a novel series of solvent-free polyurethane adhesives for laminates to be used in packaging.
Compared to classical solvent-borne polyurethane adhesives there is no need for solvents to be employed during processing and they are applied at lower coating weights. Consequently, these materials involve economic and ecological advantages, the company said.
According to the company, this initiative is part of a number of sustainability programs to optimize products and processes by reducing the employed amount of petrochemical raw materials as well as the emission of carbon dioxide.
ACTEGA Rhenania offers adhesives which are characterised by high content of polyols based on renewable raw materials. All raw materials used in packaging are listed in relevant food law regulations
Processability in common laminating machines and the overall performance comply with classical solvent-free polyurethane adhesives. Working temperatures are 40 – 70 °C depending on the specific formulation. Moreover it is possible to laminate inorganic surfaces, such as SiOx layers or aluminium foil, the company claims.