破壞(huai)了電(dian)(dian)化鋁(lv)表(biao)面光(guang)澤性(xing)(xing)，圖文(wen)輪廓發虛：需(xu)要(yao)覆(fu)膜(mo)加工的燙(tang)(tang)金，因(yin)擔心金箔容(rong)易(yi)(yi)擦落(luo)而(er)先燙(tang)(tang)印再(zai)(zai)覆(fu)膜(mo)。這易(yi)(yi)造(zao)(zao)成(cheng)(cheng)(cheng)薄膜(mo)（尤其(qi)是亞光(guang)膜(mo)）會(hui)破壞(huai)電(dian)(dian)化鋁(lv)的表(biao)面光(guang)澤性(xing)(xing)，也不宜采(cai)用(yong)(yong)水溶(rong)性(xing)(xing)膠水覆(fu)膜(mo)，否(fou)則(ze)會(hui)造(zao)(zao)成(cheng)(cheng)(cheng)電(dian)(dian)化鋁(lv)表(biao)面發黑，同時極易(yi)(yi)造(zao)(zao)成(cheng)(cheng)(cheng)金粉粘(zhan)在(zai)圖文(wen)邊緣造(zao)(zao)成(cheng)(cheng)(cheng)發虛現象。燙(tang)(tang)金后因(yin)壓力作(zuo)用(yong)(yong)而(er)凹陷，再(zai)(zai)加上膠水不易(yi)(yi)滲透電(dian)(dian)化鋁(lv)表(biao)層，易(yi)(yi)造(zao)(zao)成(cheng)(cheng)(cheng)燙(tang)(tang)金處0PP與紙張分離而(er)影響產品質量(liang)。正確的工藝是應(ying)先覆(fu)膜(mo)再(zai)(zai)燙(tang)(tang)金，選擇與OPP相(xiang)匹配的電(dian)(dian)化鋁(lv)。