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淺析電雕凹印版輥制作與相關細節

這次,小編(bian)給(gei)大(da)家介紹的是 “電雕凹印版(ban)輥制作與相關細節(jie)”。接下(xia)來(lai),大(da)家跟小編(bian)一起來(lai)看。

電雕凹印版輥制作
電雕凹印版輥制作

上世紀90年代(dai)(dai)初,受國內(nei)包(bao)裝市場(chang)飛速(su)發(fa)展和(he)國際制(zhi)(zhi)版(ban)先進設(she)備(bei)迅速(su)更新(xin)的(de)影響,制(zhi)(zhi)版(ban)設(she)備(bei)與技術(shu)得到快速(su)發(fa)展,制(zhi)(zhi)版(ban)企(qi)業(ye)遍地開花(hua),版(ban)材市場(chang)供(gong)不(bu)應(ying)求。90年代(dai)(dai)中(zhong)后(hou)期,隨著(zhu)計(ji)算機的(de)普及(ji)與性能提高,制(zhi)(zhi)版(ban)質量大幅提高,制(zhi)(zhi)版(ban)周期不(bu)斷縮短。經歷(li)了(le)近20年的(de)高速(su)發(fa)展,我國軟包(bao)裝制(zhi)(zhi)版(ban)行業(ye)也(ye)經歷(li)了(le)一(yi)個不(bu)斷發(fa)展的(de)過程(cheng)。

俗話(hua)說,印刷品(pin)質(zhi)量“三分(fen)在印刷,七分(fen)靠制版(ban)(ban)(ban)”。那么(me),當前我國(guo)塑料軟包裝行業制版(ban)(ban)(ban)技術如何?其市場(chang)狀況(kuang)怎樣?印刷制版(ban)(ban)(ban)過程中(zhong)需要注(zhu)意哪些問題?本期技術專(zhuan)題,編輯部將和(he)您一起關注(zhu)制版(ban)(ban)(ban)的相關技術。

凹版(ban)(ban)(ban)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)作為(wei)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)工藝(yi)的(de)(de)一(yi)種,以其(qi)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)制(zhi)品(pin)(pin)墨(mo)(mo)層(ceng)厚實(shi),顏色鮮艷、飽和(he)度高(gao)、印(yin)(yin)(yin)(yin)(yin)(yin)(yin)版(ban)(ban)(ban)耐印(yin)(yin)(yin)(yin)(yin)(yin)(yin)率高(gao)、印(yin)(yin)(yin)(yin)(yin)(yin)(yin)品(pin)(pin)質量穩定、印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)速度快等優點在(zai)(zai)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)包(bao)裝(zhuang)及(ji)圖文出版(ban)(ban)(ban)領域(yu)內占(zhan)據極其(qi)重要的(de)(de)地位。從應(ying)用(yong)(yong)(yong)情況來(lai)看,在(zai)(zai)國(guo)外(wai),凹印(yin)(yin)(yin)(yin)(yin)(yin)(yin)主要用(yong)(yong)(yong)于雜(za)志、產品(pin)(pin)目(mu)錄(lu)等精細出版(ban)(ban)(ban)物,包(bao)裝(zhuang)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)和(he)鈔(chao)票(piao)、郵(you)票(piao)等有(you)價證券(quan)的(de)(de)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua),而(er)且也應(ying)用(yong)(yong)(yong)于裝(zhuang)飾材(cai)料(liao)等特殊領域(yu);在(zai)(zai)國(guo)內,凹印(yin)(yin)(yin)(yin)(yin)(yin)(yin)則主要用(yong)(yong)(yong)于軟包(bao)裝(zhuang)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua),隨著(zhu)國(guo)內凹印(yin)(yin)(yin)(yin)(yin)(yin)(yin)技(ji)術的(de)(de)發展,也已(yi)(yi)經在(zai)(zai)紙張包(bao)裝(zhuang)、木紋(wen)裝(zhuang)飾、皮革材(cai)料(liao)、藥品(pin)(pin)包(bao)裝(zhuang)上得到廣(guang)泛應(ying)用(yong)(yong)(yong),上海運城制(zhi)版(ban)(ban)(ban)有(you)限公司(si)就是(shi)一(yi)家(jia)在(zai)(zai)各個領域(yu)均有(you)水準(zhun)的(de)(de)專業(ye)(ye)制(zhi)版(ban)(ban)(ban)公司(si),其(qi)使用(yong)(yong)(yong)的(de)(de)設(she)備(bei)均從德國(guo)或瑞士進口(kou)(kou),其(qi)生產的(de)(de)各種凹印(yin)(yin)(yin)(yin)(yin)(yin)(yin)版(ban)(ban)(ban)輥(gun)質量在(zai)(zai)全國(guo)都是(shi)首屈(qu)一(yi)指的(de)(de),其(qi)生產的(de)(de)凹印(yin)(yin)(yin)(yin)(yin)(yin)(yin)版(ban)(ban)(ban)輥(gun)已(yi)(yi)有(you)部分向國(guo)外(wai)出口(kou)(kou)。近(jin)年(nian)來(lai),凹印(yin)(yin)(yin)(yin)(yin)(yin)(yin)版(ban)(ban)(ban)輥(gun)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)大量采用(yong)(yong)(yong)醇溶性油墨(mo)(mo)和(he)水性油墨(mo)(mo)、UV油墨(mo)(mo),既符合(he)了(le)國(guo)家(jia)綠(lv)色環保(bao)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)的(de)(de)要求,又(you)能(neng)適(shi)應(ying)薄(bo)膜、復合(he)材(cai)料(liao)、紙張等多種介質,因而(er)在(zai)(zai)包(bao)裝(zhuang)印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)領域(yu)保(bao)持了(le)常勝(sheng)不衰(shuai)的(de)(de)局(ju)面,成為(wei)國(guo)內印(yin)(yin)(yin)(yin)(yin)(yin)(yin)刷(shua)(shua)(shua)行業(ye)(ye)中不可或缺(que)的(de)(de)重要一(yi)員。

凹印版輥(gun)的(de)制(zhi)作工藝,從其發展的(de)過(guo)程來看,有多種工藝選(xuan)擇(ze),分別是碳素紙照相(xiang)法、直接加網法、膠凹印轉換(huan)電(dian)子雕(diao)刻、數字電(dian)子雕(diao)刻、激(ji)光(guang)雕(diao)刻后腐蝕、激(ji)光(guang)直接雕(diao)刻等等。在此(ci),我主要談談其中目前最重要也(ye)是應用最廣泛的(de)電(dian)子雕(diao)刻凹印版輥(gun)的(de)制(zhi)作。

從凹印版(ban)(ban)輥的(de)制作(zuo)(zuo)(zuo)流程(cheng)來看,主要有以下步(bu)驟(zou):印版(ban)(ban)基體制作(zuo)(zuo)(zuo)、印版(ban)(ban)輥筒(tong)鍍銅(tong)處(chu)理、原(yuan)稿(gao)(或設計)圖(tu)(tu)像(xiang)文件(jian)(jian)制作(zuo)(zuo)(zuo)、印版(ban)(ban)圖(tu)(tu)像(xiang)電(dian)子(zi)雕(diao)刻(ke)制作(zuo)(zuo)(zuo)、印版(ban)(ban)輥筒(tong)鍍鉻。其中,印版(ban)(ban)基體制作(zuo)(zuo)(zuo)及(ji)印版(ban)(ban)鍍銅(tong)輥筒(tong)處(chu)理是與原(yuan)稿(gao)(或設計)圖(tu)(tu)像(xiang)文件(jian)(jian)制作(zuo)(zuo)(zuo)是同(tong)步(bu)進行的(de),當印版(ban)(ban)鍍銅(tong)輥筒(tong)處(chu)理與原(yuan)稿(gao)(或設計)圖(tu)(tu)像(xiang)文件(jian)(jian)制作(zuo)(zuo)(zuo)完成后,才可進行印版(ban)(ban)圖(tu)(tu)像(xiang)電(dian)子(zi)雕(diao)刻(ke)制作(zuo)(zuo)(zuo),最后印版(ban)(ban)鍍鉻,至(zhi)此完成印版(ban)(ban)的(de)全(quan)部(bu)制作(zuo)(zuo)(zuo)過程(cheng)。

1、印版基體制作

印(yin)(yin)(yin)版(ban)(ban)(ban)基(ji)體的(de)(de)(de)(de)材料一般為無(wu)縫鋼(gang)管,也有(you)少數(shu)采(cai)用(yong)鋁材料制作(zuo)的(de)(de)(de)(de)。因鋼(gang)管價格(ge)(ge)低且(qie)堅固牢實(shi),大(da)(da)(da)多數(shu)都采(cai)用(yong)鋼(gang)管,重量(liang)從10千(qian)(qian)克(窄(zhai)幅小(xiao)機(ji)(ji)型(xing)(xing)印(yin)(yin)(yin)刷(shua)(shua)(shua)機(ji)(ji))到(dao)幾百(bai)千(qian)(qian)克(寬幅大(da)(da)(da)機(ji)(ji)型(xing)(xing)印(yin)(yin)(yin)刷(shua)(shua)(shua)機(ji)(ji)、單色凹版(ban)(ban)(ban)印(yin)(yin)(yin)刷(shua)(shua)(shua)機(ji)(ji))。鋼(gang)管的(de)(de)(de)(de)壁厚從10mm到(dao)30mm,大(da)(da)(da)尺(chi)寸滾筒(tong)則更厚。按印(yin)(yin)(yin)刷(shua)(shua)(shua)機(ji)(ji)的(de)(de)(de)(de)需要(yao)(yao),印(yin)(yin)(yin)版(ban)(ban)(ban)分為無(wu)軸(zhou)(zhou)和有(you)軸(zhou)(zhou)類(lei),一般小(xiao)型(xing)(xing)軟包裝印(yin)(yin)(yin)刷(shua)(shua)(shua)機(ji)(ji)均用(yong)無(wu)軸(zhou)(zhou)空心印(yin)(yin)(yin)版(ban)(ban)(ban),大(da)(da)(da)型(xing)(xing)印(yin)(yin)(yin)刷(shua)(shua)(shua)機(ji)(ji)用(yong)有(you)軸(zhou)(zhou)印(yin)(yin)(yin)版(ban)(ban)(ban)。在制作(zuo)前,首先會(hui)由印(yin)(yin)(yin)刷(shua)(shua)(shua)廠提(ti)供其(qi)(qi)印(yin)(yin)(yin)刷(shua)(shua)(shua)機(ji)(ji)所用(yong)版(ban)(ban)(ban)輥(gun)的(de)(de)(de)(de)圖(tu)紙(zhi),然后完全(quan)按照圖(tu)紙(zhi)要(yao)(yao)求選(xuan)取(qu)合適的(de)(de)(de)(de)無(wu)縫鋼(gang)管切(qie)割、焊接(jie)法蘭、車倒角(jiao)、研磨版(ban)(ban)(ban)輥(gun)表面,如(ru)果是帶(dai)軸(zhou)(zhou)類(lei)的(de)(de)(de)(de)還要(yao)(yao)在印(yin)(yin)(yin)版(ban)(ban)(ban)的(de)(de)(de)(de)軸(zhou)(zhou)上加熱(re)封套,再經過必(bi)要(yao)(yao)的(de)(de)(de)(de)精度檢驗,達到(dao)圖(tu)紙(zhi)技術要(yao)(yao)求。至此印(yin)(yin)(yin)版(ban)(ban)(ban)的(de)(de)(de)(de)基(ji)體加工(gong)就(jiu)已完成了。在此要(yao)(yao)注意的(de)(de)(de)(de)是無(wu)論做出的(de)(de)(de)(de)原版(ban)(ban)(ban)如(ru)何(he)好或者電子雕刻的(de)(de)(de)(de)數(shu)據如(ru)何(he)精確,若不能制出高(gao)精度的(de)(de)(de)(de)印(yin)(yin)(yin)版(ban)(ban)(ban)基(ji)體,仍無(wu)法保證(zheng)印(yin)(yin)(yin)刷(shua)(shua)(shua)品的(de)(de)(de)(de)質量(liang),從這方面來說(shuo)凹版(ban)(ban)(ban)可(ke)以說(shuo)是各種(zhong)印(yin)(yin)(yin)刷(shua)(shua)(shua)版(ban)(ban)(ban)中要(yao)(yao)求最嚴格(ge)(ge)的(de)(de)(de)(de),其(qi)(qi)制造過程(cheng)中用(yong)的(de)(de)(de)(de)各種(zhong)精密(mi)加工(gong)機(ji)(ji)械設備有(you)力地保證(zheng)了版(ban)(ban)(ban)輥(gun)的(de)(de)(de)(de)精度要(yao)(yao)求。

2、印版輥筒(tong)鍍銅處理

不論(lun)印版(ban)輥筒基(ji)體是(shi)鋼或(huo)鋁(lv)材料(只要(yao)(yao)(yao)能滿(man)足(zu)要(yao)(yao)(yao)求(qiu)(qiu)的(de)(de)(de)),在制(zhi)(zhi)作制(zhi)(zhi)版(ban)銅(tong)(tong)(tong)層(ceng)之前,都要(yao)(yao)(yao)在其(qi)新加(jia)工(gong)(gong)出來的(de)(de)(de)基(ji)輥表(biao)面鍍(du)(du)預鍍(du)(du)層(ceng),有(you)多(duo)種方法可供選(xuan)擇。如鍍(du)(du)鎳、氰化(hua)(hua)物鍍(du)(du)銅(tong)(tong)(tong)。然后鍍(du)(du)制(zhi)(zhi)版(ban)銅(tong)(tong)(tong)層(ceng),這個銅(tong)(tong)(tong)層(ceng)是(shi)電(dian)子雕(diao)刻的(de)(de)(de)工(gong)(gong)作面,所以(yi)它(ta)的(de)(de)(de)質量必(bi)須符(fu)合下列要(yao)(yao)(yao)求(qiu)(qiu):銅(tong)(tong)(tong)的(de)(de)(de)純度(du)高(gao)、品粒(li)細;鍍(du)(du)層(ceng)表(biao)面應(ying)光(guang)滑無(wu)凹陷、無(wu)條紋等;鍍(du)(du)層(ceng)有(you)足(zu)夠的(de)(de)(de)硬度(du)和韌性。硫(liu)酸鹽(yan)鍍(du)(du)銅(tong)(tong)(tong)工(gong)(gong)藝(yi)(yi)是(shi)目前工(gong)(gong)藝(yi)(yi)較為先進的(de)(de)(de)酸性高(gao)速硬質電(dian)鍍(du)(du)銅(tong)(tong)(tong)法,其(qi)陰極(ji)(ji)電(dian)流(liu)密度(du)可以(yi)在13~20A/dm2范圍(wei)內變化(hua)(hua),所制(zhi)(zhi)得的(de)(de)(de)銅(tong)(tong)(tong)層(ceng)硬度(du)為維氏(210±10)HV能滿(man)足(zu)電(dian)雕(diao)版(ban)的(de)(de)(de)要(yao)(yao)(yao)求(qiu)(qiu)。高(gao)速電(dian)鍍(du)(du)所用陽極(ji)(ji)消耗較快,陽極(ji)(ji)選(xuan)用球形銅(tong)(tong)(tong)塊能盡量擴大陽極(ji)(ji)實際表(biao)面積防止陽極(ji)(ji)鈍化(hua)(hua),又因純銅(tong)(tong)(tong)陽極(ji)(ji)溶(rong)(rong)解(jie)不良(liang),易產(chan)生(sheng)銅(tong)(tong)(tong)粉影(ying)響(xiang)銅(tong)(tong)(tong)層(ceng)質量,而(er)含磷(lin)0.1%的(de)(de)(de)銅(tong)(tong)(tong)陽極(ji)(ji)由于Cu3P(非化(hua)(hua)學計算(suan)成分)的(de)(de)(de)存(cun)在,在相同條件下溶(rong)(rong)解(jie)均勻且有(you)較高(gao)的(de)(de)(de)溶(rong)(rong)解(jie)速度(du)。硫(liu)酸鹽(yan)鍍(du)(du)銅(tong)(tong)(tong)法鍍(du)(du)液一般工(gong)(gong)藝(yi)(yi):在此情況(kuang)下,陽極(ji)(ji)和陰極(ji)(ji)電(dian)流(liu)效率接近(jin)100%

硫(liu)酸銅     150~300g/l

硫酸      40~110g/l

溫度(du)      20℃~50℃

陰(yin)極電流密度(du)  10~30A/dm2

添加劑     適量

要(yao)(yao)注意(yi)的(de)是電(dian)(dian)解(jie)鍍(du)(du)銅(tong)要(yao)(yao)達到相當(dang)的(de)速度和質量(liang)要(yao)(yao)求,添加劑(ji)是必(bi)不可少的(de),其選(xuan)擇要(yao)(yao)具體到工藝規(gui)范。銅(tong)層鍍(du)(du)好以后(hou),還要(yao)(yao)經(jing)過從瑞(rui)士進口的(de)車磨(mo)(mo)(mo)聯(lian)合機(ji)切削(xue)或(huo)研磨(mo)(mo)(mo)機(ji)研磨(mo)(mo)(mo)、拋(pao)光(guang)機(ji)拋(pao)光(guang)等工序制作,使版輥的(de)直徑(jing)公(gong)差、平行度公(gong)差及(ji)表面光(guang)潔度均達到要(yao)(yao)求,至此鍍(du)(du)銅(tong)版理基本完(wan)成。由(you)于(yu)工藝等原因制得的(de)銅(tong)層有時難免出(chu)現砂(sha)眼(yan)、短(duan)劃痕等缺陷。補救(jiu)方法如下:清潔修正(zheng)區(qu)(qu)域,把輥筒作為陰極(ji)(ji),從整流器正(zheng)極(ji)(ji)引(yin)一導(dao)線,裸(luo)露部分用棉花包裹,浸漬電(dian)(dian)鍍(du)(du)液作陽極(ji)(ji)在(zai)待修正(zheng)區(qu)(qu)域上來回輕擦,直到完(wan)全補鍍(du)(du)上銅(tong)為止,要(yao)(yao)注意(yi)電(dian)(dian)壓(ya)的(de)調(diao)整,以防鍍(du)(du)層燒焦(jiao),造成刷鍍(du)(du)層與制版銅(tong)層的(de)結合力不強而(er)前功(gong)盡棄。最后(hou)用水(shui)磨(mo)(mo)(mo)砂(sha)紙打磨(mo)(mo)(mo)或(huo)再次在(zai)研磨(mo)(mo)(mo)研磨(mo)(mo)(mo)即可。

3、原(yuan)稿(gao)(或(huo)設計)圖像文件制作

首先要(yao)(yao)了解客(ke)(ke)戶的(de)要(yao)(yao)求,是(shi)原稿復制(zhi),還是(shi)在(zai)原稿上基礎上進(jin)(jin)行再(zai)設(she)計,然后(hou)對原稿掃(sao)描,要(yao)(yao)求掃(sao)描得到的(de)圖像清(qing)(qing)晰、色(se)(se)(se)(se)彩盡(jin)量(liang)接近原稿、文字線(xian)條清(qing)(qing)晰不(bu)要(yao)(yao)有虛影,尺寸不(bu)要(yao)(yao)變形等(deng)(deng),然后(hou)按(an)照(zhao)客(ke)(ke)戶要(yao)(yao)求結合凹(ao)印(yin)(yin)印(yin)(yin)刷(shua)的(de)特(te)點使用專(zhuan)業處(chu)理軟件如Photoshop、Illustrator、Freehand、Coreldraw等(deng)(deng)等(deng)(deng)對圖像、文字、漸(jian)變色(se)(se)(se)(se)等(deng)(deng)等(deng)(deng)進(jin)(jin)行制(zhi)作處(chu)理。在(zai)處(chu)理過程中,要(yao)(yao)遵循(xun)以(yi)下(xia)原則(ze):一(yi)(yi)(yi)(yi)、電分(fen)圖整(zheng)體(ti)調(diao)(diao)(diao)整(zheng)為(wei)主,不(bu)要(yao)(yao)這里(li)選(xuan)(xuan)一(yi)(yi)(yi)(yi)下(xia)調(diao)(diao)(diao)一(yi)(yi)(yi)(yi)下(xia),那里(li)選(xuan)(xuan)一(yi)(yi)(yi)(yi)下(xia)調(diao)(diao)(diao)一(yi)(yi)(yi)(yi)下(xia),容(rong)易出(chu)現(xian)局部色(se)(se)(se)(se)偏現(xian)象,能(neng)用曲線(xian)調(diao)(diao)(diao)整(zheng)的(de),盡(jin)量(liang)不(bu)要(yao)(yao)用選(xuan)(xuan)校。二、能(neng)用專(zhuan)色(se)(se)(se)(se)制(zhi)作的(de),盡(jin)量(liang)用專(zhuan)色(se)(se)(se)(se)制(zhi)作,以(yi)保證(zheng)(zheng)印(yin)(yin)刷(shua)穩定(ding)。三(san)、對于(yu)一(yi)(yi)(yi)(yi)些(xie)在(zai)小(xiao)印(yin)(yin)刷(shua)機的(de)印(yin)(yin)版,因(yin)其速度(du)慢,轉(zhuan)移差(cha),應將電分(fen)圖和(he)噴圖整(zheng)體(ti)稍做(zuo)加(jia)(jia)深,便于(yu)客(ke)(ke)戶印(yin)(yin)刷(shua)。四、細小(xiao)文字的(de)應適當(dang)加(jia)(jia)粗,線(xian)條細小(xiao)于(yu)0.2mm的(de)也應適當(dang)加(jia)(jia)粗,以(yi)保證(zheng)(zheng)能(neng)雕刻出(chu)來。五(wu)、彌蓋的(de)做(zuo)法應刻淺(qian)色(se)(se)(se)(se)進(jin)(jin)深色(se)(se)(se)(se)下(xia),一(yi)(yi)(yi)(yi)般在(zai)0.2mm以(yi)上,以(yi)保證(zheng)(zheng)套印(yin)(yin)。六、圖像的(de)色(se)(se)(se)(se)彩管理一(yi)(yi)(yi)(yi)定(ding)要(yao)(yao)到位,否則(ze)最(zui)終印(yin)(yin)版很難(nan)達到客(ke)(ke)戶的(de)要(yao)(yao)求。

4、印版圖像電子雕(diao)刻(ke)制(zhi)作

上海運城(cheng)制版(ban)(ban)(ban)有(you)限公司使(shi)(shi)用(yong)(yong)(yong)從德國(guo)或(huo)瑞士(shi)進(jin)(jin)口的(de)(de)(de)(de)先(xian)進(jin)(jin)雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)機在(zai)圖(tu)像(xiang)文件制作(zuo)完成后(hou)(hou),并對圖(tu)像(xiang)文件進(jin)(jin)行(xing)(xing)RIP后(hou)(hou),然后(hou)(hou)在(zai)電(dian)雕(diao)(diao)(diao)工(gong)(gong)作(zuo)站上進(jin)(jin)行(xing)(xing)操(cao)作(zuo),具(ju)體有(you)以(yi)(yi)下(xia)步驟:定(ding)(ding)電(dian)雕(diao)(diao)(diao)工(gong)(gong)藝、拼(pin)版(ban)(ban)(ban)、裝(zhuang)(zhuang)印版(ban)(ban)(ban)、試(shi)雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)、雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)。首(shou)先(xian)根據需(xu)要(yao)(yao)選定(ding)(ding)各(ge)色所用(yong)(yong)(yong)的(de)(de)(de)(de)電(dian)雕(diao)(diao)(diao)工(gong)(gong)藝,即網(wang)線、網(wang)角、曲線、暗調(diao)、通(tong)道、高光(guang)、針角、邊緣增強;然后(hou)(hou)再按(an)(an)照(zhao)客(ke)戶要(yao)(yao)求的(de)(de)(de)(de)拼(pin)版(ban)(ban)(ban)圖(tu)進(jin)(jin)行(xing)(xing)拼(pin)版(ban)(ban)(ban),即設(she)置(zhi)輥(gun)周長、雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)寬(kuan)度、套版(ban)(ban)(ban)線的(de)(de)(de)(de)位(wei)置(zhi)、各(ge)色圖(tu)案的(de)(de)(de)(de)位(wei)置(zhi)及橫向(xiang)、豎向(xiang)的(de)(de)(de)(de)數量、設(she)置(zhi)雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)方式(螺旋、步進(jin)(jin)、無縫(feng)接);然后(hou)(hou)裝(zhuang)(zhuang)印版(ban)(ban)(ban)準備雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke),在(zai)雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)版(ban)(ban)(ban)輥(gun)以(yi)(yi)前,要(yao)(yao)將版(ban)(ban)(ban)輥(gun)表面進(jin)(jin)行(xing)(xing)清潔(jie)、潤滑(hua)處理,使(shi)(shi)之達到(dao)雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)中(zhong)不(bu)易打針、滑(hua)傷(shang)版(ban)(ban)(ban)面;然后(hou)(hou)進(jin)(jin)試(shi)雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke),按(an)(an)照(zhao)所定(ding)(ding)雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)工(gong)(gong)藝參(can)(can)數,選用(yong)(yong)(yong)所需(xu)電(dian)雕(diao)(diao)(diao)針角,試(shi)出需(xu)要(yao)(yao)的(de)(de)(de)(de)網(wang)點暗調(diao)、通(tong)道、高光(guang)的(de)(de)(de)(de)大小,然后(hou)(hou)就可以(yi)(yi)進(jin)(jin)行(xing)(xing)正(zheng)式雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)了,雕(diao)(diao)(diao)刻(ke)(ke)(ke)(ke)(ke)完成后(hou)(hou),注意檢查版(ban)(ban)(ban)面有(you)無滑(hua)傷(shang)、打針等不(bu)正(zheng)常(chang)現象。值得注意的(de)(de)(de)(de)是常(chang)用(yong)(yong)(yong)的(de)(de)(de)(de)電(dian)雕(diao)(diao)(diao)針有(you)90°、100°、110°、120°、130°、140°,電(dian)雕(diao)(diao)(diao)的(de)(de)(de)(de)網(wang)線范圍從40線至(zhi)200線,電(dian)雕(diao)(diao)(diao)網(wang)角從30°至(zhi)60°,其產生的(de)(de)(de)(de)工(gong)(gong)藝參(can)(can)數匹(pi)配有(you)很多種,能否正(zheng)確(que)選用(yong)(yong)(yong),直(zhi)接關系(xi)到(dao)客(ke)戶的(de)(de)(de)(de)產品質量,在(zai)使(shi)(shi)用(yong)(yong)(yong)時一(yi)定(ding)(ding)要(yao)(yao)慎(shen)重。

5、印版輥筒鍍鉻

凹印(yin)(yin)(yin)(yin)(yin)版輥經(jing)過(guo)(guo)(guo)電雕在銅(tong)層(ceng)(ceng)上形成網穴以后(hou),版輥制(zhi)作就算完成了(le)。但(dan)印(yin)(yin)(yin)(yin)(yin)刷(shua)過(guo)(guo)(guo)程(cheng)中油墨掉落于銅(tong)層(ceng)(ceng)表(biao)(biao)面(mian)(mian)(mian)非(fei)網孔(kong)部(bu)分時,銅(tong)面(mian)(mian)(mian)容易被刮(gua)刀刮(gua)傷,因(yin)此要(yao)(yao)在銅(tong)層(ceng)(ceng)表(biao)(biao)面(mian)(mian)(mian)鍍(du)上一(yi)層(ceng)(ceng)10μm左右的(de)(de)(de)硬(ying)鉻(ge)層(ceng)(ceng)。至此,一(yi)根凹印(yin)(yin)(yin)(yin)(yin)印(yin)(yin)(yin)(yin)(yin)版滾筒就制(zhi)作成了(le)。在鍍(du)鉻(ge)這一(yi)道程(cheng)序里,需要(yao)(yao)經(jing)過(guo)(guo)(guo)以下步(bu)驟:清洗、脫脂、鍍(du)鉻(ge)、拋光(guang)(guang)。清洗與脫脂的(de)(de)(de)目的(de)(de)(de)是將版面(mian)(mian)(mian)的(de)(de)(de)油脂、臟污(wu)去掉,拋光(guang)(guang)則是為了(le)把鍍(du)鉻(ge)過(guo)(guo)(guo)程(cheng)中網穴邊緣的(de)(de)(de)毛刺打磨(mo)掉。凹印(yin)(yin)(yin)(yin)(yin)版輥表(biao)(biao)面(mian)(mian)(mian)所鍍(du)鉻(ge)層(ceng)(ceng)有很高(gao)的(de)(de)(de)硬(ying)度(du)(du)(du)(du)(du)(du)(du)及高(gao)度(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)耐(nai)磨(mo)性和化學穩定性,通過(guo)(guo)(guo)鍍(du)鉻(ge)使(shi)印(yin)(yin)(yin)(yin)(yin)版表(biao)(biao)面(mian)(mian)(mian)的(de)(de)(de)銅(tong)層(ceng)(ceng)不(bu)受損傷是制(zhi)作印(yin)(yin)(yin)(yin)(yin)刷(shua)版輥必(bi)須的(de)(de)(de)一(yi)道程(cheng)序,而要(yao)(yao)提高(gao)印(yin)(yin)(yin)(yin)(yin)版的(de)(de)(de)耐(nai)印(yin)(yin)(yin)(yin)(yin)力(li)主要(yao)(yao)也(ye)是提高(gao)鉻(ge)層(ceng)(ceng)的(de)(de)(de)硬(ying)度(du)(du)(du)(du)(du)(du)(du)。如印(yin)(yin)(yin)(yin)(yin)數要(yao)(yao)達(da)80萬轉,鉻(ge)的(de)(de)(de)硬(ying)度(du)(du)(du)(du)(du)(du)(du)需要(yao)(yao)950HV左右。鉻(ge)層(ceng)(ceng)硬(ying)度(du)(du)(du)(du)(du)(du)(du)與溫度(du)(du)(du)(du)(du)(du)(du)、電流密(mi)(mi)度(du)(du)(du)(du)(du)(du)(du)、鉻(ge)酐(gan)及硫酸(suan)的(de)(de)(de)含量都有密(mi)(mi)切(qie)的(de)(de)(de)關系(xi),需要(yao)(yao)嚴格控制(zhi)。

隨著凹印制(zhi)版(ban)技術(shu)的不(bu)(bu)斷發展(zhan)(zhan)創新,電(dian)子雕(diao)刻(ke)凹版(ban)的制(zhi)作工藝(yi)也在(zai)不(bu)(bu)斷的完善(shan),涉及的領域也在(zai)不(bu)(bu)斷的擴(kuo)展(zhan)(zhan),相信在(zai)未來的一(yi)段時期(qi)內,電(dian)子雕(diao)刻(ke)凹版(ban)制(zhi)作工藝(yi)仍(reng)然能發揮它獨特的魅(mei)力(li),在(zai)凹印行業中占有(you)不(bu)(bu)敗之地。

 

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