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被网购代替不了的行业

润版液的技术参数及其检测方法

2017-04-01 17:22:21 来源:龙宇印材 点击:2930

润版液众所周知,平版印刷基于“油水不相容”的原理来实现图文的正确转移的。事实上,油水不相容的“水”指的就是润版液,因为纯水的表面张力太大,不利于在印版空白部分铺展,所以在纯水中加入表面活性剂(如异丙醇等)配制成润版液原液.再加水稀释得到印刷用润版液,它降低了水的表面张力,保证在印版空白部分形成良好的水膜,快速实现水墨平衡。


1.pH值

润版液的pH值不可忽视,pH值过高或过低都会给印刷带来不良影响。pH值过高则润版液表面张力下降,破坏版面的亲油层,使油墨严重乳化,水墨失衡:pH值过低则影响油墨的氧化干燥速度.且腐蚀版基,降低印版耐印率。一般认为,Ps版最合理的pH值应保持在4.8~5.3,此时水墨平衡最易控制,印刷质量较好。在印刷车间简易测试润版液pH值可以采用笔式pH计.精度为土0.1,测量前将测量头用清水冲洗.并进行中性(pH为7.0)校正。测量时应该将润版液从水槽中取出,静置后测量.仪器显数稳定后读数。

2、电导率

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3.酒精(异丙醇)浓度

GONGYESHANGXIGUANBAHANYIBINGCHUNDERUNBANYEJIAOZUOJIUJINGRUNBANYE。JIUJINGQIDAORUNSHIJIDEZUOYONG,ZAIJIANGDISHUIBIAOMIANZHANGLIDETONGSHIHAIZENGJIARUNBANYEDENIANDU。CHUANTONGRUNBANYEJIUJINGTIANJIALIANGWANGWANGKEYIDADAO15%ZUOYOU.DANSHIYIBINGCHUNBULIYUHUANBAOQIEXIANGDUIJIAOGUI,HENDUOXINXINGRUNBANYEYIHANYOURUNSHIJI,KEDAFUDUJIANGDIYIBINGCHUNYONGLIANG。JIUJINGNONGDUDECESHIKEYISHIYONGBIZHONGJI。DEGUOFOGRAXIEHUIZAIZUORUNBANYECESHIGUOCHENGZHONG,CAIYONGMIDUJILAICELIANGRUNBANYE,RANHOUGENJUMIDUDUIYINGDECHAZHAOBIAOLAIQUEDINGJIUJINGNONGDU。ZHEIZHONGFANGFABEIYINSHUASHANGHEXIAOSHOUSHANGGUANGWEITUIJIAN。


4.表面张力

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5.缓冲能力

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6.温度

RUNBANYEWENDUYESHIYINGXIANGJIAOYINSHUIMOPINGHENGDEYIDAYINSU。BUTONGWENDUDERUNBANYEZAIXIANGTONGDEYINSHUATIAOJIANXIA.SHUIMOPINGHENGZHUANGKUANGYOUSUOBUTONG。RUNBANYEWENDUSHENGGAOHUIJIAJUYOUMORUHUA,FANZHIZEJIANQINGYOUMORUHUA。SUIZHEWENDUDESHANGSHENG,RUNBANYEDEYONGLIANGYEJIANGZENGJIA。YINSHUACHEJIANDEWENDUHUIYINQIRUNBANYEWENDUDEBIANHUA.SUOYICHEJIANYAOZHUYISHIWENDEDIAOJIE。XIAJIDESHIHOU.YOUDEYINSHUACHEJIANTONGGUOZAISHUIDOUZHONGJIARURUNBANYEBINGKUAIDEFANGFALAIJIANGDIRUNBANYEDEWENDU,CONGERFANGZHIYOUMOGUODURUHUA。WENDUCESHISHIYONGWENDUJIJIKE。

相关热点:
清洁(清洗)剂
洁版液
修版笔
润版液
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