There are many terms thrown around with thermal laminate. The term co-polymer means two adhesives have been blended together and applied to the laminate film. These two adhesives are more aggressive and usually melt at lower temperatures. Co-polymer laminate film is used in higher ink coverage applications when more aggressive laminate film is needed for better adhesion to the substrate. Other terms for co-polymer film are low-melt and Nap Lam II depending upon the manufacturer.