破壞了電(dian)(dian)化(hua)鋁(lv)表(biao)面光(guang)澤性，圖文(wen)輪廓發虛：需(xu)要覆(fu)(fu)膜(mo)加(jia)工(gong)的燙(tang)(tang)金，因擔心金箔容易擦落而(er)(er)先燙(tang)(tang)印再覆(fu)(fu)膜(mo)。這易造(zao)成(cheng)薄(bo)膜(mo)（尤其是(shi)亞(ya)光(guang)膜(mo)）會(hui)破壞電(dian)(dian)化(hua)鋁(lv)的表(biao)面光(guang)澤性，也(ye)不宜采用水(shui)溶(rong)性膠水(shui)覆(fu)(fu)膜(mo)，否則會(hui)造(zao)成(cheng)電(dian)(dian)化(hua)鋁(lv)表(biao)面發黑，同(tong)時極易造(zao)成(cheng)金粉粘在(zai)圖文(wen)邊緣造(zao)成(cheng)發虛現象(xiang)。燙(tang)(tang)金后因壓力作用而(er)(er)凹陷，再加(jia)上膠水(shui)不易滲透(tou)電(dian)(dian)化(hua)鋁(lv)表(biao)層，易造(zao)成(cheng)燙(tang)(tang)金處(chu)0PP與紙張分離而(er)(er)影響產(chan)品(pin)質量(liang)。正確(que)的工(gong)藝(yi)是(shi)應先覆(fu)(fu)膜(mo)再燙(tang)(tang)金，選(xuan)擇與OPP相匹(pi)配的電(dian)(dian)化(hua)鋁(lv)。