Abstract: Poly(ethylene terephthalate-co-1,4-cylclohexylenedimethylene terephthalate) (PETG) pre-coating films were prepared by using hexamethylene diisocyanate (HDI), polycarbonate diol (PCDL), polytetrahydrofuran diol (PTMG), methacrylic acid-β-hydroxyethyl (HEMA), and dimethylol propionic acid as raw materials. The chemical structure of pre-coating films were characterized by infrared spectroscopy and scanning electron microscopy, and the effect of raw materials on the thermal cladding properties of pre-coated films were investigated. The results indicated that the activation temperature of pre-coated films became lower when the amounts of polyether diol and acrylate increased and hydrazine hydrate was used, resulting in optimum peeling strength.

Key words: smart card; poly(ethylene terephthalateco-1,4-cylclohexylenedimethylene tereph- thalate), precoating film, thermal cladding