破(po)(po)壞了(le)電(dian)(dian)化(hua)鋁(lv)(lv)表(biao)面(mian)(mian)光澤(ze)性(xing)，圖(tu)文(wen)輪廓(kuo)發虛(xu)：需要覆(fu)膜加(jia)工(gong)(gong)的燙(tang)(tang)(tang)(tang)金，因(yin)擔心金箔容(rong)易擦落而先燙(tang)(tang)(tang)(tang)印再覆(fu)膜。這易造(zao)成(cheng)薄(bo)膜（尤其是亞(ya)光膜）會(hui)破(po)(po)壞電(dian)(dian)化(hua)鋁(lv)(lv)的表(biao)面(mian)(mian)光澤(ze)性(xing)，也不(bu)(bu)宜采用水溶(rong)性(xing)膠水覆(fu)膜，否則會(hui)造(zao)成(cheng)電(dian)(dian)化(hua)鋁(lv)(lv)表(biao)面(mian)(mian)發黑，同(tong)時極易造(zao)成(cheng)金粉粘(zhan)在圖(tu)文(wen)邊緣造(zao)成(cheng)發虛(xu)現象。燙(tang)(tang)(tang)(tang)金后因(yin)壓(ya)力作(zuo)用而凹陷，再加(jia)上膠水不(bu)(bu)易滲透(tou)電(dian)(dian)化(hua)鋁(lv)(lv)表(biao)層，易造(zao)成(cheng)燙(tang)(tang)(tang)(tang)金處0PP與紙張分離(li)而影響產品質(zhi)量(liang)。正(zheng)確的工(gong)(gong)藝是應先覆(fu)膜再燙(tang)(tang)(tang)(tang)金，選擇與OPP相匹配的電(dian)(dian)化(hua)鋁(lv)(lv)。