Study of the effects of the ink layer on selected properties of multilayer packaging films

Abstract

Application of multilayer films in packaging allows the reduction of the average weight of packaging and a selection of its optimal barrier properties. This kind of material is particularly important for the development of packaging. The aim of this research was to determine the influence of the ink layer thickness on the mechanical properties of interlayer printed laminates. Studies were performed for a double-layer film (poly(ethylene terephthalate)/glue/biaxially oriented polypropylene) prepared by an adhesive method using a two-component, solvent-free adhesive. The bond strength of the laminates and the thickness of each layer were measured. It was found that the thickness of the fixed ink, interlayer printed on the reverse side of the PET film, has a significant influence on the mechanical properties of the laminates. Regardless of the ink film thickness, the values of the bond strengths of the printed laminate are significantly reduced.