包裝裝潢印刷批發
發布時間:2020-08-25
包裝(zhuang)裝(zhuang)潢印(yin)刷批發(fa)教大家紙(zhi)(zhi)(zhi)或(huo)紙(zhi)(zhi)(zhi)板(ban)的(de)正(zheng)(zheng)(zheng)(zheng)反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)的(de)鑒別
無論哪種紙(zhi)(zhi)(zhi)或(huo)紙(zhi)(zhi)(zhi)板(ban)都有(you)正(zheng)(zheng)(zheng)(zheng)反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)之(zhi)分,在抄紙(zhi)(zhi)(zhi)時,濕(shi)紙(zhi)(zhi)(zhi)幅與(yu)網接觸面(mian)(mian)(mian)(mian)(mian)為反(fan)(fan)面(mian)(mian)(mian)(mian)(mian),另一面(mian)(mian)(mian)(mian)(mian)為正(zheng)(zheng)(zheng)(zheng)面(mian)(mian)(mian)(mian)(mian)。反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)由于與(yu)銅網接觸,細小纖維與(yu)填料(liao)流失較(jiao)多,顯出網印(yin),故反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)較(jiao)為粗糙。正(zheng)(zheng)(zheng)(zheng)面(mian)(mian)(mian)(mian)(mian)較(jiao)為緊密,正(zheng)(zheng)(zheng)(zheng)反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)的(de)性質(zhi)有(you)明顯的(de)差別。其平滑(hua)度(du),正(zheng)(zheng)(zheng)(zheng)面(mian)(mian)(mian)(mian)(mian)較(jiao)反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)高些(xie),拉毛速(su)度(du)反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)比正(zheng)(zheng)(zheng)(zheng)面(mian)(mian)(mian)(mian)(mian)大些(xie);白點反(fan)(fan)面(mian)(mian)(mian)(mian)(mian)比正(zheng)(zheng)(zheng)(zheng)面(mian)(mian)(mian)(mian)(mian)好(hao)些(xie),因(yin)此紙(zhi)(zhi)(zhi)和紙(zhi)(zhi)(zhi)板(ban)具(ju)有(you)兩面(mian)(mian)(mian)(mian)(mian)性。