燙(tang)(tang)金工藝是(shi)(shi)利(li)用(yong)熱(re)壓(ya)轉移(yi)的(de)原理，將電(dian)(dian)(dian)化(hua)鋁(lv)(lv)中的(de)鋁(lv)(lv)層(ceng)(ceng)(ceng)轉印到承印物(wu)表(biao)面以形(xing)成(cheng)特殊(shu)的(de)金屬(shu)(shu)效果，因(yin)燙(tang)(tang)金使用(yong)的(de)主(zhu)要材(cai)料是(shi)(shi)電(dian)(dian)(dian)化(hua)鋁(lv)(lv)箔(bo)，因(yin)此燙(tang)(tang)金也叫電(dian)(dian)(dian)化(hua)鋁(lv)(lv)燙(tang)(tang)印。電(dian)(dian)(dian)化(hua)鋁(lv)(lv)箔(bo)通常由多層(ceng)(ceng)(ceng)材(cai)料構成(cheng)，基材(cai)常為P E，其次是(shi)(shi)分(fen)離涂層(ceng)(ceng)(ceng)、顏色涂層(ceng)(ceng)(ceng)、金屬(shu)(shu)涂層(ceng)(ceng)(ceng)（鍍鋁(lv)(lv)）和膠水涂層(ceng)(ceng)(ceng)。