金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)印(yin)(yin)花(hua)(hua)的工(gong)(gong)藝要(yao)點(dian)。①金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)印(yin)(yin)花(hua)(hua)工(gong)(gong)藝要(yao)點(dian)。a.常(chang)(chang)用(yong)(yong)的金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)細(xi)度(du)(du)(du)在100~1200目(mu)。粒(li)子(zi)越(yue)細(xi),越(yue)帶紅光(guang)(guang)(guang),光(guang)(guang)(guang)澤也較(jiao)差;反之,粒(li)子(zi)越(yue)粗,帶青光(guang)(guang)(guang),光(guang)(guang)(guang)澤也較(jiao)強(qiang),刷洗(xi)牢(lao)度(du)(du)(du)也較(jiao)好。所以,目(mu)數(shu)(shu)應(ying)選擇適當,這點(dian)和一般涂(tu)(tu)料(liao)(liao)選擇越(yue)細(xi)越(yue)好有(you)異。常(chang)(chang)控制在200~400目(mu)之間。b.滲透劑(ji)(ji)有(you)助于亮度(du)(du)(du)的提高,以擴(kuo)散劑(ji)(ji)nno及(ji)滲透劑(ji)(ji)jfc較(jiao)常(chang)(chang)用(yong)(yong)。c.抗(kang)氧(yang)(yang)(yang)劑(ji)(ji)能(neng)阻延金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)在空(kong)氣(qi)中的氧(yang)(yang)(yang)化(hua)(hua)速度(du)(du)(du),防(fang)止生成氧(yang)(yang)(yang)化(hua)(hua)膜(mo)而(er)發暗,常(chang)(chang)用(yong)(yong)的有(you)米吐爾(er)(硫酸對(dui)甲(jia)胺基苯酚)及(ji)苯并三氮(dan)(dan)吐,這種藥(yao)劑(ji)(ji)不(bu)(bu)直(zhi)接加(jia)入而(er)調(diao)于乳化(hua)(hua)糊中。d.乳化(hua)(hua)糊如用(yong)(yong)一般漿(jiang)(jiang),易分相和氧(yang)(yang)(yang)化(hua)(hua),故應(ying)專(zhuan)配(pei)。其配(pei)方為:特種白火油700ml水xml平(ping)平(ping)加(jia)o50ml擴(kuo)散劑(ji)(ji)nno40ml增稠劑(ji)(ji)m20ml苯并三氮(dan)(dan)唑(酒(jiu)精等(deng)量調(diao)溶)10ml注:1升(2000轉/分)②金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)印(yin)(yin)花(hua)(hua)工(gong)(gong)藝配(pei)方及(ji)流(liu)(liu)程。a.配(pei)方:金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)(400目(mu))350g粘合(he)劑(ji)(ji)mr-96400g專(zhuan)用(yong)(yong)乳化(hua)(hua)糊250gb.工(gong)(gong)藝流(liu)(liu)程:印(yin)(yin)金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)→焙(bei)烘(hong)(160℃,1.5分鐘)→軋樹脂―→焙(bei)烘(hong)(溫度(du)(du)(du)、時(shi)間同前)―→拉幅(fu)―→軋光(guang)(guang)(guang)―→防(fang)縮―→檢驗。上(shang)述軋光(guang)(guang)(guang)目(mu)的是增加(jia)光(guang)(guang)(guang)澤,減少摩擦,防(fang)止落粉(fen)(fen)(fen)(fen)。在金(jin)(jin)(jin)(jin)(jin)光(guang)(guang)(guang)要(yao)求(qiu)不(bu)(bu)高但(dan)牢(lao)度(du)(du)(du)要(yao)求(qiu)較(jiao)高的情(qing)況下,可(ke)用(yong)(yong)涂(tu)(tu)料(liao)(liao)金(jin)(jin)(jin)(jin)(jin)黃取(qu)代(dai)部(bu)分金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)用(yong)(yong)量,特別是用(yong)(yong)在黑色或深醬地色上(shang),常(chang)(chang)稱“飛(fei)金(jin)(jin)(jin)(jin)(jin)”。③印(yin)(yin)金(jin)(jin)(jin)(jin)(jin)花(hua)(hua)筒(tong)雕刻(ke)和排(pai)列(lie)。印(yin)(yin)金(jin)(jin)(jin)(jin)(jin)花(hua)(hua)筒(tong)雕刻(ke)方面(mian)較(jiao)突出處是比常(chang)(chang)規印(yin)(yin)花(hua)(hua)深0.02mm左(zuo)右,一般常(chang)(chang)在0.12mm左(zuo)右,飛(fei)面(mian)直(zhi)大(da)些,有(you)利于印(yin)(yin)漿(jiang)(jiang)暢流(liu)(liu)。采用(yong)(yong)雕刻(ke)花(hua)(hua)筒(tong)進行金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)印(yin)(yin)花(hua)(hua),最(zui)直(zhi)分為兩(liang)次,一般常(chang)(chang)放在最(zui)后(hou)工(gong)(gong)序。采用(yong)(yong)絲網(wang)(wang)印(yin)(yin)花(hua)(hua)時(shi),網(wang)(wang)印(yin)(yin)臺板以熱臺板較(jiao)宜,一般按單數(shu)(shu)或雙數(shu)(shu)跳印(yin)(yin)。與其它染(ran)料(liao)(liao)共(gong)印(yin)(yin)時(shi),應(ying)視花(hua)(hua)型及(ji)染(ran)料(liao)(liao)性能(neng)作(zuo)出具(ju)體(ti)排(pai)列(lie)。如與還原染(ran)料(liao)(liao)疊(die)印(yin)(yin),以金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)先印(yin)(yin)為宜,氧(yang)(yang)(yang)化(hua)(hua)最(zui)宜用(yong)(yong)流(liu)(liu)動(dong)冷水,切(qie)不(bu)(bu)可(ke)用(yong)(yong)酸及(ji)強(qiang)氧(yang)(yang)(yang)化(hua)(hua)劑(ji)(ji)。工(gong)(gong)藝流(liu)(liu)程:印(yin)(yin)金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)→焙(bei)烘(hong)→軋樹脂→焙(bei)烘(hong)→拉幅(fu)→軋光(guang)(guang)(guang)→防(fang)縮。也可(ke)以采用(yong)(yong)發泡印(yin)(yin)花(hua)(hua)方法,在印(yin)(yin)漿(jiang)(jiang)中添加(jia)發泡劑(ji)(ji)和熱塑性樹脂,經高溫焙(bei)烘(hong)后(hou)發泡劑(ji)(ji)分解,釋放出氣(qi)體(ti)使(shi)印(yin)(yin)漿(jiang)(jiang)膨脹而(er)形成立(li)體(ti)花(hua)(hua)型,并借(jie)樹脂將金(jin)(jin)(jin)(jin)(jin)粉(fen)(fen)(fen)(fen)涂(tu)(tu)料(liao)(liao)固著。這樣不(bu)(bu)僅工(gong)(gong)藝簡便(bian),而(er)且無粗硬的手感。其流(liu)(liu)程為:冷臺板平(ping)網(wang)(wang)印(yin)(yin)花(hua)(hua)→焙(bei)烘(hong)。