双面数码活性印花工艺

李双忠 吴明华

摘 要：双面数码印花是一种采用喷印的方式在面料正反面印制达到正反面色差小或同花异色、异花异色效果的印花工艺。为了获得数码印花面料正反面相近颜色图案，总结了前处理、精准定位喷印和印后处理等关键工艺及其工艺注意点。研究了海藻浆、海D浆料、AD浆料和4018浆料对于不同色调墨水喷印的得色量和渗透性，优选出AD浆料和4018浆为双面数码印花的前处理浆料;通过采用软件定位和图形处理系统转换花型及精确定位后再反面喷印染料墨水的方法，达到双面精准定位印花的目的;同时探索了后处理对产品质量的影响因素。研究和实践表明，通过上述工艺的把控，可以取得良好的双面数码印花质量。

关键词：双面数码印花;印花浆料 ; 喷印工艺;浆料配方

Abstract：Double-sided digital printing is a process of printing on front and back faces of the fabric by spray printing method to achieve the effect of small color differences between front and back faces， different colors of the same flower and different colors for different flowers. In order to obtain the similar color pattern on front and back faces of the fabric， the key processes and process notes of pretreatment， precise positioning printing and post-printing processing were summarized. The color yield and permeability of seaweed sizing， D sizing， AD sizing and 4018 sizing for ink spray printing with different colors were studied， and AD sizing and 4018 sizing were optimized as the pretreatment sizing of double-sided digital printing. The software positioning and graphic processing system were used to change the pattern and accurately locate the pattern， and then dye ink was sprayed on the back side to achieve the purpose of double-sided accurate positioning printing. At the same time， the influencing factors of post-treatment on product quality were explored. The research and practice show that through the control of the above processes， satisfactory double-sided digital printing quality can be achieved.

Key words：double-sided digital printing; printing pulp; printing process; sizing formula

在数码印花中，不论是涤纶织物分散染料直接喷墨印花[1-2]，还是喷印后再转移印花[3]，以及针对棉麻丝毛等天然纤维织物喷墨印花，業界普遍采用单面喷墨印花。由于墨水，浆料或喷墨印花工艺技术等原因，目前数码印花产品普遍存在3个缺陷：a）“露白”[4]：对于泳衣、鞋面、家纺等弹力面料的数码喷墨印花产品[5-6]，用手拉伸或逆向压摸织物，花纹处会露出白底，严重影响产品品质。b）“翻丝”：由于常规喷墨印花墨水渗透性差，印花时只喷印在面料表面[7]，难以渗透到内部。由此印花面料缝制的衣服、围巾等，缝制针眼处会露出白色线眼。尤其采用乔其、双绉等纱线捻度高且织物组织结构疏松的面料制成的围巾在穿戴过程中，图案花纹处更易漏出白线。……