破壞了(le)電(dian)(dian)(dian)化鋁表面光(guang)澤性(xing)，圖文輪廓發(fa)虛：需(xu)要覆膜(mo)(mo)加(jia)工的(de)燙(tang)(tang)金(jin)(jin)(jin)，因擔(dan)心金(jin)(jin)(jin)箔容易擦落而(er)先(xian)燙(tang)(tang)印再覆膜(mo)(mo)。這易造(zao)(zao)成薄膜(mo)(mo)（尤其是亞(ya)光(guang)膜(mo)(mo)）會破壞電(dian)(dian)(dian)化鋁的(de)表面光(guang)澤性(xing)，也不宜采用水(shui)(shui)(shui)溶性(xing)膠水(shui)(shui)(shui)覆膜(mo)(mo)，否則會造(zao)(zao)成電(dian)(dian)(dian)化鋁表面發(fa)黑，同(tong)時(shi)極易造(zao)(zao)成金(jin)(jin)(jin)粉粘(zhan)在圖文邊緣(yuan)造(zao)(zao)成發(fa)虛現象。燙(tang)(tang)金(jin)(jin)(jin)后因壓力作用而(er)凹陷，再加(jia)上膠水(shui)(shui)(shui)不易滲透電(dian)(dian)(dian)化鋁表層，易造(zao)(zao)成燙(tang)(tang)金(jin)(jin)(jin)處0PP與(yu)紙(zhi)張分離而(er)影響產品質量。正確的(de)工藝是應(ying)先(xian)覆膜(mo)(mo)再燙(tang)(tang)金(jin)(jin)(jin)，選擇與(yu)OPP相匹配的(de)電(dian)(dian)(dian)化鋁。