UNDERSTANDING WHY ADHESION IN EXTRUSION COATING DECREASES WITH DIMINISHING COATING THICKNESS, PART III: ANALYSIS OF PEEL TEST

摘要

It is well known that in the extrusion coating process, peel strength to aluminum foil and other non-porous substrates decreases with decreasing coating thickness. The peel strength is found to be more sensitive to changes in thickness as the adhesion between the coating and substrate improves. An analysis of the peel test shows that changes in the critical dimension of the deformation region at the peel front may be responsible.