破壞(huai)了電(dian)(dian)化鋁表(biao)面(mian)(mian)光(guang)(guang)澤(ze)性(xing)(xing)，圖文(wen)輪(lun)廓發虛：需要覆(fu)膜(mo)加(jia)工(gong)的燙(tang)(tang)金(jin)，因擔(dan)心金(jin)箔容易(yi)擦落而先(xian)燙(tang)(tang)印再(zai)覆(fu)膜(mo)。這易(yi)造成(cheng)(cheng)薄膜(mo)（尤(you)其是(shi)亞光(guang)(guang)膜(mo)）會破壞(huai)電(dian)(dian)化鋁的表(biao)面(mian)(mian)光(guang)(guang)澤(ze)性(xing)(xing)，也不宜(yi)采用水(shui)(shui)溶性(xing)(xing)膠水(shui)(shui)覆(fu)膜(mo)，否(fou)則(ze)會造成(cheng)(cheng)電(dian)(dian)化鋁表(biao)面(mian)(mian)發黑(hei)，同(tong)時極易(yi)造成(cheng)(cheng)金(jin)粉(fen)粘在圖文(wen)邊緣造成(cheng)(cheng)發虛現(xian)象。燙(tang)(tang)金(jin)后因壓(ya)力作用而凹陷(xian)，再(zai)加(jia)上膠水(shui)(shui)不易(yi)滲透電(dian)(dian)化鋁表(biao)層，易(yi)造成(cheng)(cheng)燙(tang)(tang)金(jin)處0PP與紙張分離而影響產品質量。正(zheng)確(que)的工(gong)藝是(shi)應先(xian)覆(fu)膜(mo)再(zai)燙(tang)(tang)金(jin)，選擇與OPP相匹配的電(dian)(dian)化鋁。