J9九游会AG

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白卡纸的基本常识

发布时间:2020-01-03 14:01:51   作者:保定J9九游会AG纸板厂家   来源:dawnstea.com   浏览量:111

白卡纸(zhi)(zhi)是供印刷手刺、封皮、证书、请柬(jian)及(ji)包(bao)装装潢用(yong)的(de)卡纸(zhi)(zhi)。白卡纸(zhi)(zhi)为平板纸(zhi)(zhi)和卷筒纸(zhi)(zhi),其尺度主要为:880mm*1230mm,787mm*1032mm。按(an)质量水平白卡纸(zhi)(zhi)分为A、B、C三等。

  

        白(bai)卡纸(zhi)较(jiao)为厚实坚(jian)挺,定量较(jiao)大(da),其定量有200g/m2、220g/m2、250g/m2、270g/m2、300g/m2、400g/m2等(deng)(deng)多种规格(ge)。白(bai)卡纸(zhi)紧度(du)(du)(du)(du)(du)(du)通常不(bu)小(xiao)于0.80g/m3,白(bai)度(du)(du)(du)(du)(du)(du)要求(qiu)较(jiao)高,A、B、C三等(deng)(deng)的白(bai)度(du)(du)(du)(du)(du)(du)别(bie)离不(bu)小(xiao)于92.0%、87.0%、82.0%。为避免泅水,白(bai)卡纸(zhi)要求(qiu)有较(jiao)大(da)的施(shi)(shi)胶(jiao)度(du)(du)(du)(du)(du)(du),A、B、C三等(deng)(deng)施(shi)(shi)胶(jiao)度(du)(du)(du)(du)(du)(du)别(bie)离不(bu)小(xiao)于1.5mm、1.5mm及1.0mm。为了(le)保(bao)持纸(zhi)制品的平坦,白(bai)卡纸(zhi)应(ying)(ying)较(jiao)厚实坚(jian)挺,有较(jiao)高的挺度(du)(du)(du)(du)(du)(du)和耐破度(du)(du)(du)(du)(du)(du),关于不(bu)同(tong)等(deng)(deng)级(ji)不(bu)同(tong)定量的白(bai)卡其挺度(du)(du)(du)(du)(du)(du)有不(bu)同(tong)的要求(qiu),定量越大(da),等(deng)(deng)级(ji)越高,挺度(du)(du)(du)(du)(du)(du)要求(qiu)越大(da),一般纵向挺度(du)(du)(du)(du)(du)(du)应(ying)(ying)不(bu)小(xiao)于2.10-10.6mN•m,横向挺度(du)(du)(du)(du)(du)(du)应(ying)(ying)不(bu)小(xiao)于1.06-5.30 mN•m。

A、B、C三(san)等(deng)的(de)耐破(po)指数(shu)别(bie)离不小于2.00KPa•m2/g、1.60 KPa•m2/g及1.20KPa•m2/g。为确保印(yin)刷(shua)时油墨(mo)均匀分布及纸(zhi)张(zhang)本身(shen)的(de)外观要求(qiu),白(bai)卡的(de)滑润度不小于20-40S。别(bie)的(de),白(bai)卡纸(zhi)纸(zhi)面应平坦,不允(yun)许有斑点和条痕等(deng)纸(zhi)病,也不允(yun)许发作翘曲变(bian)形,纸(zhi)张(zhang)的(de)纤维组织应均匀,0.2-1.5mm2的(de)尘(chen)埃不多于28个(ge)/m2(A等(deng)),不许有大于1.5mm2的(de)尘(chen)埃。

  

        白(bai)卡(ka)纸(zhi)通(tong)(tong)常(chang)采用100%的(de)漂白(bai)木浆(jiang)为原(yuan)料,面层(ceng)、底层(ceng)采用硫(liu)酸(suan)盐(yan)化学针叶木浆(jiang),芯层(ceng)采用阔叶木化学机械浆(jiang),浆(jiang)料通(tong)(tong)过打浆(jiang)后(hou)参加碳酸(suan)钙、硫(liu)酸(suan)钡等(deng)填料,用AKD进行中(zhong)性(xing)重度施胶,在叠网造(zao)纸(zhi)机上进行抄(chao)造(zao),并经(jing)压光(guang)、涂布处理而成,根据需要(yao),通(tong)(tong)过压纹(wen)(wen)处理则可(ke)出(chu)产带有特别(bie)压印(yin)斑纹(wen)(wen)的(de)卡(ka)纸(zhi),凡带有特别(bie)压印(yin)斑纹(wen)(wen)的(de)白(bai)卡(ka)纸(zhi)则可(ke)不查看滑润度和(he)白(bai)度。除白(bai)色(se)(se)外,通(tong)(tong)过对(dui)浆(jiang)料进行染色(se)(se),还可(ke)出(chu)产各种色(se)(se)泽的(de)卡(ka)纸(zhi),这时除白(bai)度外,其他技能(neng)功(gong)能(neng)均(jun)与白(bai)卡(ka)纸(zhi)的(de)技能(neng)功(gong)能(neng)一致。


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