The cold lamination process simply refers to lamination without heat, applying pressure with roll laminators or onto mount presses instead to activate the laminate, creating a strong bond to the material.
Cold laminators provide protection whilst stopping the degrading of certain inks that can be effected by heat in thermal, working well to effectively provide protection from moisture and damage from general everyday wear-and-tear.
The most popular pressure sensitive film is known as PVC (vinyl) as it maintains it's lay-flat qualities whilst protecting against abrasion.
The roll laminators will generally determine the width and core size of the rolls. The roll laminators will specifications to ensure correct lamination is carried out, not damaging the machine or your prints.