3M™ TufQUIN TF two-ply Inorganic Hybrid Insulating Paper-Polyester Laminate 15 mil(5+10). 3M™ TufQUIN™ Insulating Paper Polyester Laminates are 3M™ TufQUIN Insulating Paper, combined with polyester film. Typical constructions consist of a thin ply of TufQUIN Insulating Paper bonded to both sides of polyester film using a high temperature resin system. It is designed for insulating and protecting electrical components.