燙(tang)金(jin)(jin)工(gong)藝(yi)是(shi)利(li)用(yong)熱壓轉移的原理，將電(dian)(dian)(dian)化(hua)鋁(lv)(lv)(lv)中的鋁(lv)(lv)(lv)層(ceng)(ceng)轉印(yin)(yin)到承印(yin)(yin)物(wu)表面以形成(cheng)特(te)殊(shu)的金(jin)(jin)屬(shu)效(xiao)果，因(yin)燙(tang)金(jin)(jin)使用(yong)的主要材(cai)料(liao)是(shi)電(dian)(dian)(dian)化(hua)鋁(lv)(lv)(lv)箔，因(yin)此燙(tang)金(jin)(jin)也(ye)叫電(dian)(dian)(dian)化(hua)鋁(lv)(lv)(lv)燙(tang)印(yin)(yin)。電(dian)(dian)(dian)化(hua)鋁(lv)(lv)(lv)箔通常(chang)由多層(ceng)(ceng)材(cai)料(liao)構成(cheng)，基(ji)材(cai)常(chang)為P E，其次是(shi)分離涂層(ceng)(ceng)、顏(yan)色涂層(ceng)(ceng)、金(jin)(jin)屬(shu)涂層(ceng)(ceng)（鍍鋁(lv)(lv)(lv)）和膠水涂層(ceng)(ceng)。