Original test to characterize the stretching effect onto adhesion during film or sheet extrusion, 13th TAPPI European PLACE Conference

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Plastic is considered to be a most versatile packaging material. However, if not biodegradable, the present sustainability demand is a burden for plastic packaging materials. Paper on the other hand is considered a sustainable packaging material but in certain cases it suffers from the rigid structure of the fibre network. The combination of paper and plastic provides a composite material which is unique in taking advantage of the best features of both materials. The combination of these materials in extrusion coating is a demanding task. One has to concentrate on the adhesion of a polymer film to the paperboard substrate without destroying the properties of the paperboard substrate in the coating process. The effect of surface treatment on adhesion, sensory properties, blocking and other effects will be discussed in this paper.