Pre-lamination is often referred to as the heart of a laminating system in the industry. And rightly so, because the lamination process takes place during pre-lamination to a large extent, where the foil is heated up and then pressed or bonded to the glass using rollers. However, the air that is still trapped is pressed out of the glass package during the course of pre-lamination. This followed by the autoclave process, during which the laminate foil is melted under heat and high pressure and finally bonded.