燙(tang)金(jin)工藝是(shi)利用(yong)熱壓轉(zhuan)移(yi)的原理(li)，將電(dian)(dian)化(hua)鋁(lv)中的鋁(lv)層(ceng)(ceng)(ceng)轉(zhuan)印(yin)到承印(yin)物(wu)表面(mian)以(yi)形成(cheng)特殊的金(jin)屬(shu)效果，因燙(tang)金(jin)使用(yong)的主(zhu)要材(cai)(cai)料是(shi)電(dian)(dian)化(hua)鋁(lv)箔，因此燙(tang)金(jin)也叫(jiao)電(dian)(dian)化(hua)鋁(lv)燙(tang)印(yin)。電(dian)(dian)化(hua)鋁(lv)箔通常(chang)由(you)多層(ceng)(ceng)(ceng)材(cai)(cai)料構成(cheng)，基材(cai)(cai)常(chang)為P E，其次(ci)是(shi)分離涂(tu)層(ceng)(ceng)(ceng)、顏色涂(tu)層(ceng)(ceng)(ceng)、金(jin)屬(shu)涂(tu)層(ceng)(ceng)(ceng)（鍍鋁(lv)）和膠(jiao)水(shui)涂(tu)層(ceng)(ceng)(ceng)。