燙(tang)金(jin)(jin)工藝(yi)是(shi)利用熱壓轉移的原理，將電(dian)(dian)(dian)化(hua)(hua)(hua)鋁(lv)中的鋁(lv)層(ceng)(ceng)(ceng)(ceng)轉印(yin)到承印(yin)物(wu)表面以形(xing)成特殊的金(jin)(jin)屬(shu)效(xiao)果，因燙(tang)金(jin)(jin)使用的主要材(cai)(cai)料是(shi)電(dian)(dian)(dian)化(hua)(hua)(hua)鋁(lv)箔(bo)，因此(ci)燙(tang)金(jin)(jin)也叫電(dian)(dian)(dian)化(hua)(hua)(hua)鋁(lv)燙(tang)印(yin)。電(dian)(dian)(dian)化(hua)(hua)(hua)鋁(lv)箔(bo)通常由多層(ceng)(ceng)(ceng)(ceng)材(cai)(cai)料構成，基材(cai)(cai)常為P E，其次是(shi)分離涂層(ceng)(ceng)(ceng)(ceng)、顏色涂層(ceng)(ceng)(ceng)(ceng)、金(jin)(jin)屬(shu)涂層(ceng)(ceng)(ceng)(ceng)（鍍(du)鋁(lv)）和膠(jiao)水涂層(ceng)(ceng)(ceng)(ceng)。