CN106320056A - 一种工程绘图纸及其制造方法 - Google Patents
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Abstract
本发明公开了一种工程绘图纸及其抄造方法,由漂白硫酸盐针叶木化学浆、漂白硫酸盐阔叶木化学浆经分别打浆后配浆、抄造而成，本发明产品定量为79～81g/ m2,ISO白度107‑109%,耐折度大于15次,厚度104‑108微米,平滑度大于25s,水分为4.5～5.5％，抗水性Cobb值20～30g/ m2，动摩擦系数低于0.35，纵向湿强度大于4N/15mm。本发明解决了工程绘图纸打印时的固墨问题，纸张细腻性与过机性能冲突问题，以及成本过高的问题。
Description
技术领域
本发明涉及一种工程绘图纸及其抄造方法。
背景技术
工程绘图纸用于工程图、机械图、地形图等的打印用纸，也适于铅笔、钢笔等书写。该产品要求适用喷墨打印（水性墨），具有良好固墨效果，纸张表面要求细腻平滑，打印色彩还原度好，线条清晰，同时要求纸张具有良好过机性能，挺度好，尺寸稳定性好；另外，产品要求白度高，尘埃度小，纸质要求优良的耐折性，并有一定的湿强度。
目前，国内工程复印纸数码打印效果差、纸张表面粗糙，手感差，同时存在针叶木化学浆用量过大，成本过高的问题。
发明内容
本发明的目的在于提供一种数码打印效果好、纸张表面光滑，手感好，并且生产成本低的工程绘图纸及其制造方法。
本发明的具体技术方案如下：一种工程绘图纸，由漂白硫酸盐针叶木化学浆、漂白硫酸盐阔叶木化学浆经分别打浆后配浆、抄造而成，其特征在于：（1）所述浆料的重量配比为漂白硫酸盐针叶木化学浆∶漂白硫酸盐阔叶木化学浆15-20：80～85，化学浆打浆均采用羧甲基纤维素钠辅助打浆；(2)辅料用量为：(A)羧甲基纤维素钠对绝干浆用量：0.1～0.5％；（B）湿强剂PAE为固含量12%的PAE溶液，对绝干浆用量为0.7～1.0％；（C）纸张表面施胶润滑剂为硬脂酸钙类，用量0.5-1.0kg/t纸；（D）表面施胶中，有机固色剂用量3-10kg/t纸，CaCl2用量10-15kg/t纸；（E）施胶剂为ASA，用量：0.8～3.0kg/t纸；(F)浆内阳离子玉米淀粉：8-12kg/t纸；（G）表面施胶酶转化淀粉70-90kg/t纸；（H）填料轻质碳酸钙150～180kg/t纸。
本发明上述工程绘图纸的制造方法，其特征在于：包括用料为漂白硫酸盐针叶木化学浆、漂白硫酸盐阔叶木化学浆，经分别打浆后配浆、抄造， (1) 所述浆料的重量配比为漂白硫酸盐针叶木化学浆∶漂白硫酸盐阔叶木化学浆15-20：80～85，浆料打浆度：漂白硫酸盐针叶木化学浆：40～500SR；漂白硫酸盐阔叶木化学浆：30～350SR；化学浆打浆均采用羧甲基纤维素钠辅助打浆；(2)辅料用量为：(A)羧甲基纤维素钠对绝干浆用量：0.1～0.5％；（B）湿强剂PAE为固含量12%的PAE溶液，对绝干浆用量为0.7～1.0％；（C）纸张表面施胶润滑剂为硬脂酸钙类，用量0.5-1.0kg/t纸；（D）表面施胶中，有机固色剂用量3-10kg/t纸，CaCl2用量10-15kg/t纸；（E）施胶剂为ASA，用量：0.8～3.0kg/t纸；(F)浆内阳离子玉米淀粉：8-12kg/t纸；（G）表面施胶酶转化淀粉70-90kg/t纸；（H）填料轻质碳酸钙150～180kg/t纸；(3)上网工艺条件：(A)上网浓度：0.95～1.15％；(B)上网PH值：8.0～8.5；(C)上网打浆度：40～500SR。
本发明产品特性：定量为79～81g/ m2,ISO白度107-109%,耐折度大于15次,厚度104-108微米,平滑度大于25s,水分为4.5～5.5％，抗水性Cobb值20～30g/ m2，动摩擦系数低于0.35，纵向湿强度大于4N/15mm。
本发明采用漂白硫酸盐针叶木化学浆、漂白硫酸盐阔叶木化学浆配抄，采取以下技术解决国内工程复印纸数码打印效果差、纸张表面粗糙、手感差及成本过高的问题。（1）纸张纤维表面的具有阴电性特征，而喷墨打印所用水性墨粒子也为阴电性，致使染料粒子无法有效的固着在纸张表面，我们在表面施胶中，添加3-10kg/t纸有机固色剂及10-15kg/t纸的CaCl2，改变纸张表面电性，从而改善了纸张表面对水墨的亲和力，进而解决了喷墨打印中固墨效果差的问题；（2）国内目前生产工程复印纸，为满足纸张过机性能及耐折度要求，需要添加大比例的针叶木化学浆，使得成本过高，我们通过采用以下方法降低针叶木浆比例：一是使用羧甲基纤维素钠辅助打浆，改善打浆效果，使得在同样打浆强度下，获得更高的纸浆强度及纤维平均长度，从而获得良好的纸张耐折度；二是提高通过提高表面施胶量（表面施胶淀粉采用酶转化淀粉，表面施胶综合成本低于综合浆价），改善纸张强度及表面细腻性。（3）、采用以下办法改善纸张表面手感及细腻性，一是羧甲基纤维素钠辅助化学浆打浆，可改善纤维分丝帚化，减少纤维切断，提高纸张表面细腻性；二是通过在表面施胶添加润滑剂，改善纸张手感。
本发明采用漂白硫酸盐针叶木化学浆、漂白硫酸盐阔叶木化学浆配抄，采用先进的生产工艺，解决了国内工程复印纸打印时的固墨问题，纸张细腻性与过机性能冲突问题（纸张平滑度高时，纸张紧度降低，挺度下降，影响过机），以及成本过高的问题，对国内工程绘图纸市场有着重要的影响。
具体实施方式
下面结合具体实施实例对本发明作进一步说明：
实施例1：
将漂白硫酸盐针叶木化学浆打至450SR、漂白硫酸盐阔叶木化学浆打至320SR；按15∶85配比调制混合浆，加入（A）羧甲基纤维素钠对绝干浆用量：0.3％；（B）湿强剂PAE：0.8％；（C）纸张表面施胶润滑剂（硬脂酸钙类）用量0.6kg/t纸；（D）表面施胶中，有机固色剂用量8kg/t纸；CaCl2用量15kg/t纸；（E）施胶剂ASA用量：0.9kg/t纸；(F)浆内阳离子玉米淀粉：10kg/t纸；（G）表面施胶酶转化淀粉80kg/t纸；（H）填料轻质碳酸钙170kg/t纸。纸料经网部成形、压榨、前干燥、表面施胶、后干燥、压光整饰、 卷取、复卷得到用户要求规格尺寸的产品。
抄造上网浓度：0.102％；(B)上网PH值：8.2；(C)上网打浆度：450SR。网部车速1200m/min，压榨压力，一压线压700KN/m，二压900KN/m；出干燥水分为5.1％；软压光线压80KN/m。
制得产品定量为79.9g/ m2,ISO白度108.1%,耐折度21次,厚度107微米,平滑度大于30s,水分为5.1％，抗水性Cobb值25.5g/ m2，动摩擦系数0.30，纵向湿强度4.5N/15mm。
实施例2：
将漂白硫酸盐针叶木化学浆打至470SR、漂白硫酸盐阔叶木化学浆打至330SR；按18∶82配比调制混合浆，加入（A）羧甲基纤维素钠对绝干浆用量：0.5％；（B）湿强剂PAE：1.0％；（C）纸张表面施胶润滑剂（硬脂酸钙类）用量0.7kg/t纸；（D）表面施胶中，有机固色剂用量7.5kg/t纸；CaCl2用量12.5kg/t纸；（E）施胶剂ASA用量：1.2kg/t纸；(F)浆内阳离子玉米淀粉：9kg/t纸；（G）表面施胶酶转化淀粉78kg/t纸；（H）填料轻质碳酸钙175kg/t纸。纸料经网部成形、压榨、前干燥、表面施胶、后干燥、压光整饰、 卷取、复卷得到用户要求规格尺寸的产品。
抄造上网浓度：1.11％；(B)上网PH值：8.4；(C)上网打浆度：450SR。网部车速1230m/min，压榨压力，一压线压700KN/m，二压900KN/m；出干燥水分为5.0％；软压光线压80KN/m。
制得产品定量为80.2g/ m2,ISO白度108.3%,耐折度19次,厚度106微米,平滑度29s,水分为5.0％，抗水性Cobb值26g/ m2，动摩擦系数0.30，纵向湿强度4.8N/15mm。
Claims (2)
1.一种工程绘图纸，由漂白硫酸盐针叶木化学浆、漂白硫酸盐阔叶木化学浆经分别打浆后配浆、抄造而成，其特征在于：（1）所述浆料的重量配比为漂白硫酸盐针叶木化学浆∶漂白硫酸盐阔叶木化学浆15-20：80～85，化学浆打浆均采用羧甲基纤维素钠辅助打浆；(2)辅料用量为：(A)羧甲基纤维素钠对绝干浆用量：0.1～0.5％；（B）湿强剂PAE为固含量12%的PAE溶液，对绝干浆用量为0.7～1.0％；（C）纸张表面施胶润滑剂为硬脂酸钙类，用量0.5-1.0kg/t纸；（D）表面施胶中，有机固色剂用量3-10kg/t纸，CaCl2用量10-15kg/t纸；（E）施胶剂为ASA，用量：0.8～3.0kg/t纸；(F)浆内阳离子玉米淀粉：8-12kg/t纸；（G）表面施胶酶转化淀粉70-90kg/t纸；（H）填料轻质碳酸钙150～180kg/t纸。
2.一种权利要求1所述的工程绘图纸的制造方法，其特征在于：包括用料为漂白硫酸盐针叶木化学浆、漂白硫酸盐阔叶木化学浆，经分别打浆后配浆、抄造， (1) 所述浆料的重量配比为漂白硫酸盐针叶木化学浆∶漂白硫酸盐阔叶木化学浆15-20：80～85，浆料打浆度：漂白硫酸盐针叶木化学浆：40～500SR；漂白硫酸盐阔叶木化学浆：30～350SR；化学浆打浆均采用羧甲基纤维素钠辅助打浆；(2)辅料用量为：(A)羧甲基纤维素钠对绝干浆用量：0.1～0.5％；（B）湿强剂PAE为固含量12%的PAE溶液，对绝干浆用量为0.7～1.0％；（C）纸张表面施胶润滑剂为硬脂酸钙类，用量0.5-1.0kg/t纸；（D）表面施胶中，有机固色剂用量3-10kg/t纸，CaCl2用量10-15kg/t纸；（E）施胶剂为ASA，用量：0.8～3.0kg/t纸；(F)浆内阳离子玉米淀粉：8-12kg/t纸；（G）表面施胶酶转化淀粉70-90kg/t纸；（H）填料轻质碳酸钙150～180kg/t纸；(3)上网工艺条件：(A)上网浓度：0.95～1.15％；(B)上网PH值：8.0～8.5；(C)上网打浆度：40～500SR。
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