破壞(huai)了(le)電(dian)(dian)化(hua)(hua)(hua)鋁(lv)(lv)表面光(guang)澤(ze)性，圖文(wen)輪廓發(fa)(fa)虛：需要覆(fu)膜(mo)加(jia)(jia)工的(de)燙(tang)(tang)(tang)金(jin)，因(yin)擔(dan)心金(jin)箔(bo)容易(yi)擦落而先(xian)燙(tang)(tang)(tang)印再覆(fu)膜(mo)。這易(yi)造(zao)(zao)成(cheng)(cheng)(cheng)薄(bo)膜(mo)（尤(you)其是亞光(guang)膜(mo)）會破壞(huai)電(dian)(dian)化(hua)(hua)(hua)鋁(lv)(lv)的(de)表面光(guang)澤(ze)性，也不宜采用(yong)水(shui)溶性膠水(shui)覆(fu)膜(mo)，否則會造(zao)(zao)成(cheng)(cheng)(cheng)電(dian)(dian)化(hua)(hua)(hua)鋁(lv)(lv)表面發(fa)(fa)黑，同時極(ji)易(yi)造(zao)(zao)成(cheng)(cheng)(cheng)金(jin)粉粘在圖文(wen)邊緣造(zao)(zao)成(cheng)(cheng)(cheng)發(fa)(fa)虛現(xian)象。燙(tang)(tang)(tang)金(jin)后因(yin)壓力作(zuo)用(yong)而凹陷，再加(jia)(jia)上膠水(shui)不易(yi)滲透(tou)電(dian)(dian)化(hua)(hua)(hua)鋁(lv)(lv)表層，易(yi)造(zao)(zao)成(cheng)(cheng)(cheng)燙(tang)(tang)(tang)金(jin)處0PP與紙張(zhang)分離而影(ying)響產品(pin)質(zhi)量。正確的(de)工藝是應(ying)先(xian)覆(fu)膜(mo)再燙(tang)(tang)(tang)金(jin)，選擇與OPP相匹配的(de)電(dian)(dian)化(hua)(hua)(hua)鋁(lv)(lv)。