These machines are similar to a heated nip roll machine. They come with a Teflon coated heated shoe/flange over part of the nip roll. As the films unroll they pass over a heated shoe to a melting temperature thus transferring film or sheet to stock. This process is extremely effective for applying overlays.
This machine comes with a 2nd set of nip rolls for tension. The machine can also be adapted to fit an auto rewinder, unwind, and a slitter knife.