Eureka! Institutional Repository

Lamination of films from four different types of synthetic polymers was achieved using two component adhesives in actual industrial conditions using a laminating machine (COMEXI NEXUS EVO). The rate of polymerization was investigated by measuring the peak reduction of isocyanate groups of the adhesive using a FT-IR spectrometer at regular time intervals. First measurement was taken as soon as the lamination was done whereas the last measurement was carried out after a 24 hour time interval was elapsed. At the same time the strength of the lamination was assessed using the instrument Testometric in order to study the development of strength of the lamination in relation to the rate of reduction of the absorbance peaks attributed to isocyanates still present in the adhesive matrix. The possibility of phase transitions taking place during heating the adhesives was explored using a DSC calorimeter. The experimental data indicated that there is a direct relation between the type of the polymeric films which are laminated by applying the two component adhesive and the proportion of the components employed for each system in order to achieve the optimum outcome.