Abstract: A tamper proof identification card. The disclosed card is made from a core of safety paper sandwiched between two top and bottom layers of polyester coated with polyethylene. The safety paper is bounded at its periphery by a polyester border similar to the top and bottom layers. The layered card is heat and pressure treated to encapsulate the paper. Should the seal be inadequate, any attempts to modify the information marked on the safety paper will be readily apparent.

Abstract: There is provided an attachment for use on a somewhat standard sheet laminating machine of the type including two vertically spaced upper and lower heating elements defining therebetween a pass along which sheet material moves in a direction from the front to the back of the elements. Each heating element has a front facing, curvilinear heated donor surface extending transversely of the workpiece pass and curved in a direction generally parallel to the pass. This type of sheet laminating machine also includes two vertically spaced pressure rolls behind the heating elements and extending transversely of the pass with one of the rolls on each vertical side of the pass. The attachment includes first and second heat conducting elements formed from a metal havng high thermal conductivity, with each of the heat conducting elements having generally flat platen plates and integral heat receptor portions.