Wacker unveils VAE copolymer dispersion for packaging adhesives

Wacker, the Munich-based chemical group, has developed a new polymer dispersion specifically catering to the needs of the paper and packaging industry. The new vinyl acetate/ethylene-based (VAE) copolymer dispersion, Vinnapas EP 441, is a multi-purpose binder which is said ‘to combine excellent nozzle application and high setting speed, resulting in faster production and reduced cost in use’.  

Vinnapas EP has been developed to support the continuing global trend of non contact extrusion (‘nozzle’) technology, instead of roller application for paper converting. In nozzle applications, the binder is applied by pulsed dots through nozzles. This leads to reduced binder consumption and faster production speed, thus resulting in higher productivity. To reach high flexibility in application, binders must combine good machinability for nozzle as well as roll applications and show good performance with regard to other relevant properties such as setting speed. 

Vinnapas EP 441 is a multi-purpose VAE copolymer dispersion with improved performance on nozzle application. The new product is said to demonstrate good adhesion and cohesion balance, high setting speed and good machine processability. 

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