破壞(huai)(huai)了(le)電(dian)(dian)化(hua)(hua)鋁表(biao)面(mian)光(guang)(guang)澤性(xing)，圖文輪廓發(fa)虛(xu)：需要覆(fu)膜(mo)加工的燙(tang)金(jin)(jin)(jin)，因擔心(xin)金(jin)(jin)(jin)箔容易(yi)擦落而先(xian)燙(tang)印(yin)再覆(fu)膜(mo)。這易(yi)造(zao)成(cheng)(cheng)薄(bo)膜(mo)（尤其是亞光(guang)(guang)膜(mo)）會破壞(huai)(huai)電(dian)(dian)化(hua)(hua)鋁的表(biao)面(mian)光(guang)(guang)澤性(xing)，也不(bu)宜采用水(shui)溶性(xing)膠水(shui)覆(fu)膜(mo)，否則會造(zao)成(cheng)(cheng)電(dian)(dian)化(hua)(hua)鋁表(biao)面(mian)發(fa)黑，同時極易(yi)造(zao)成(cheng)(cheng)金(jin)(jin)(jin)粉粘在圖文邊緣造(zao)成(cheng)(cheng)發(fa)虛(xu)現象。燙(tang)金(jin)(jin)(jin)后因壓力作用而凹(ao)陷，再加上膠水(shui)不(bu)易(yi)滲(shen)透電(dian)(dian)化(hua)(hua)鋁表(biao)層，易(yi)造(zao)成(cheng)(cheng)燙(tang)金(jin)(jin)(jin)處0PP與(yu)紙(zhi)張分離而影響產品質量。正確的工藝是應(ying)先(xian)覆(fu)膜(mo)再燙(tang)金(jin)(jin)(jin)，選擇與(yu)OPP相(xiang)匹(pi)配的電(dian)(dian)化(hua)(hua)鋁。