Herma’s SuperTack
A completely resin-free adhesive for labels has been developed by Herma. The new SuperTack adhesive offers very low migration levels and strong initial tack, making it an ideal solution for films as well as moist, fatty, dirty, or dusty surfaces, extending beyond the food sector.
‘By dispensing with resin, we are coming closer than ever to the zero migration benchmark,’ said Dr Ulli Nägele, head of research and development. ‘The lower the resin content, the lower initial tack and final adhesion, especially on films,’ he explained. ‘But by applying our multi-layer technology, we were able to develop an adhesive that does enable us to dispense with resins – without any compromises.’
SuperTack makes the most of its advantages at near freezing temperatures combined with condensation. ‘The adhesive received top marks in tests at 0 and +2 degrees centigrade on polar and non-polar surfaces,’ said Dr Nägele. ‘Even at temperatures below -20 degrees, it does not lose its tack.’ Due to its temperature resistance, it is also suitable for foodstuffs that have been recently heated, such as boiled chicken. In such cases, there is usually a great amount of heat and moisture beneath the packaging film.
