CN107503197B - 一种白墨预处理液及其制备方法、直喷数码印花工艺 - Google Patents

一种白墨预处理液及其制备方法、直喷数码印花工艺 Download PDF

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CN107503197B
CN107503197B CN201710784737.0A CN201710784737A CN107503197B CN 107503197 B CN107503197 B CN 107503197B CN 201710784737 A CN201710784737 A CN 201710784737A CN 107503197 B CN107503197 B CN 107503197B
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张定涛
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Zhuhai Huacai New Materials Technology Co ltd
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Abstract

本发明公开了一种白墨预处理液及其制备方法、直喷数码印花工艺,属于纺织品数码印花技术领域。该预处理液包括以下各组分:阳离子胶态二氧化硅1~5份、粘合剂3~7份、干燥抑制剂2~6份、多价碱土金属盐3~8份、防渗色剂3~8份、阳离子媒染剂1~5份、杀菌剂0.1‑0.5份、润湿消泡剂0.1~0.5份、去离子水60~80份。将以上物料按顺序投入物料机中分别搅拌均匀,然后过滤即得。该预处理液具有良好的分散稳定性,使用时涂布非常均匀,附着力较强,能够抑制白色涂料直喷墨水在深色织物表层渗化,同时能够有效提高白色涂料直喷墨水在深色织物上的遮盖力和附着力,大大拓宽了白色涂料直喷墨水的适用范围。

Description

一种白墨预处理液及其制备方法、直喷数码印花工艺
技术领域
本发明涉及纺织品数码印花技术领域,具体涉及一种用于白色涂料直喷墨水的白墨预处理液及其制备方法、直喷数码印花工艺。
背景技术
喷墨印花是集计算机、信息、新材料和精细化工等多学科领域为一体的纺织品印染加工新技术,具有印花精细度高、批量灵活、无染料和助剂浪费等优点。然而,以往纺织品喷墨印花主要针对白色织物,近年来随着非白色织物印花量的增加,白色涂料直喷墨水的需求量也越来越大,成为纺织品喷墨印花中重要的颜色之一。
白色涂料直喷墨水直接打印在深色织物上,墨水会渗透到纺织品的背面,从而导致墨水的遮盖力明显下降。目前,解决该问题的主要方法是在深色纺织品的表面涂覆预处理液,使其在织物表面形成一层均匀的薄膜从而抑制白色涂料直喷墨水的渗透。目前,市面现有的深色纺织品预处理液应用于白色涂料直喷墨水上,存在以下问题:这些预处理液对于白色涂料直喷墨水渗透的抑制作用不够,导致白色涂料直喷墨水固化后的遮盖力远远达不到人们的消费需求。另外,这些预处理液均存在会明显降低白色涂料直喷墨水在深色纺织品上的附着力的缺陷。
发明内容
为了克服现有技术的不足,本发明的目的在于提供一种直喷白墨预处理液,该预处理液具有良好的分散稳定性,使用时涂布非常均匀,附着力较强,能够抑制白色涂料直喷墨水在深色织物表层渗化,同时能够有效提高白色涂料直喷墨水在深色织物上的遮盖力和附着力,大大拓宽了白色涂料直喷墨水的适用范围。
为解决上述问题,本发明所采用的技术方案如下:
一种直喷白墨预处理液,其包括以下按质量份计的各组分:阳离子胶态二氧化硅1~5份、粘合剂3~7份、干燥抑制剂2~6份、多价碱土金属盐3~8份、防渗色剂3~8份、阳离子媒染剂1~5份、杀菌剂0.1-0.5份、润湿消泡剂0.1~0.5份、去离子水60~80份。
作为本发明优选的实施方式,该预处理液包括以下按质量份计的各组分:阳离子胶态二氧化硅1~3份、粘合剂3~5份、干燥抑制剂5~7份、多价碱土金属盐3~5份、防渗色剂3~5份、阳离子媒染剂1~3份、杀菌剂0.1份、润湿消泡剂0.3~0.5份、去离子水70~80份。
作为本发明优选的实施方式,所述粘合剂为阳离子水溶性粘合剂或非离子型水溶性粘合剂;所述阳离子水溶性粘合剂选自阳离子改性丙烯酸酯共聚物、三甲基乙基氯化铵改性淀粉、二乙基氨基乙基铵-甲基氯盐改性淀粉中的至少一种;所述非离子型水溶性粘合剂选自聚乙烯醇、羟乙基纤维素、甲基纤维素、糊精、淀粉、阿拉伯胶、聚乙二醇、聚丙烯酰胺、聚丙二醇和葡聚糖的至少一种。
作为本发明优选的实施方式,所述干燥抑制剂选自聚乙二醇、乙二醇、2-吡咯烷酮、二甘醇、三甘醇、丙三醇、丙二醇、1,3-丁二醇、乙二醇单丁醚、三甘醇单甲醚、3-甲基-1,5-戊二醇、三甘醇单丁醚、二甘醇单甲醚、乙二醇单甲醚中的一种或者任意两种以上的混合。
作为本发明优选的实施方式,所述多价碱土金属盐选自铍、镁、钙、锶、钡中的一种或任意两种以上的混合。
作为本发明优选的实施方式,所述防渗色剂选自蚁酸、醋酸、苯磺酸、对甲苯磺酸及其衍生物、丙酸以及芳族酸中的一种或任意两种以上的混合。
作为本发明优选的实施方式,所述阳离子媒染剂选自乙烯基卞基三甲基氯化铵、乙烯基吡咯烷酮、乙二醇二甲基丙烯酸酯、聚二烯丙基二甲基氯化铵中的一种或任意两种以上的混合。
作为本发明优选的实施方式,所述杀菌剂为Proxel GXL、 BIT-20、1,2-苯并异噻唑啉-3-酮中的一种。
作为本发明优选的实施方式,所述润湿消泡剂选自法国蓝星有机硅公司生产的SP3309、美国空气化学公司生产的104、104E中的一种。
在本发明中,阳离子胶态二氧化硅能够使预处理液高密度地吸收白色涂料直喷墨水,以便实现快速干燥,同时吸收墨水使其不会流动及大量渗透入织物内,从而固化后的白色涂料层具有良好的锐利度以及明亮的白度。粘合剂与阳离子胶态二氧化硅在织物表层固化过程中会快速反应形成一张均匀致密的膜,使其高密度地吸收白色涂料墨水,同时还作为光泽提供层(即二氧化硅层)与基材之间的中间连接层,从而增加光泽提供层与基材的附着力。当处理液中的多价金属盐含量较高时,在处理液处于干燥温度较高的环境下,干燥抑制剂可以抑制多价碱土金属的析出,使得预处理液可以防止墨水中的钛白粉的凝集作用降低。多价碱土金属盐具有使白色涂料墨水凝聚的效果,有效地避免打印后的白色墨水浓度降低、白墨洇透的问题以及白墨渗透到织物背面的问题,从而改善发色效果。在湿碰湿(预处理液完全在湿润的状态下进行图像打印)打印工艺中,防渗色剂能够使白色涂料直喷墨水液滴固定在织物表面上,从而避免了渗色、增强了对比度,使施加的白墨颜色显得更强烈和更明亮。阳离子媒染剂会与白色涂料直喷墨水形成螯合物,从而使白墨牢固地附在纤维上,形成色素沉淀以达到提高白度的目的。杀菌剂能有效地控制或杀死水系统中的微生物,从而防止固化后的预处理液在高温潮湿的环境中出现织物发霉变黑的情况。润湿消泡剂能够抑制预处理液中泡沫产生或消除已产生泡沫,提高预处理液涂覆的均匀性,从而保证打印图像的效果。去离子水作为预处理液中阳离子物质与助剂的载体,同时在固化过程中基本完全挥发,不在织物上残留从而影响手感。
本发明还提供了一种如上所述的预处理液的制备方法,其包括如下步骤:将去离子水、润湿消泡剂、杀菌剂、干燥抑制剂、多价碱土金属盐依次投入物料机中,在300r/min下搅拌20min使其混合均匀;然后依次投入阳离子胶态二氧化硅、阳离子或非离子粘合剂和阳离子媒染剂,在300r/min下搅拌20min使其混合均匀;在300r/min转速下边搅拌边缓慢滴加防渗色剂后,搅拌30min使其混合均匀;将搅拌混合完成的混合液使用300目滤布过滤,即得预处理液。
本发明还提供了一种采用如上所述的预处理液进行的直喷数码印花工艺,其包括以下步骤:
S1、将配制好的预处理液灌装于喷雾器中,摇匀预处理液;将喷雾器设置在远离打印区域且通风良好的区域;
S2、正式喷涂前进行预喷,避免在织物上喷涂时产生较大的液滴;然后将喷雾器设置在距待处理织物0.3~0.5m处,对浅色织物进行喷涂时从上到下、从左到右喷涂一次,对深色织物进行喷涂时从上到下、从左到右喷涂一次后,再从右到左、从下到上喷涂一次,使预处理液在织物表面呈细小雾滴状;
S3、预处理液喷涂完毕后,使用泡沫滚筒在织物上均匀地朝一个方向进行清洁,确保预处理液覆盖均匀;
S4、通过数码印花机器将绘制图案以白色涂料直喷墨水直接喷涂在经过预处理后的织物上,打印结束后对织物以热压温度180℃压烫3~5min,压印时采用无硅树脂仿羊皮纸隔衬。
相比现有技术,本发明的有益效果在于:
本发明运用独特的科学配方,使得直喷白墨预处理液具有良好的分散稳定性,使用时涂布非常均匀,预处理液会形成一层薄膜在织物表层,堵塞织物纤维的毛细管,从而抑制白墨在织物表层渗化,提高印花精度;通过粘合剂与阳离子胶态二氧化硅反应生成薄膜,使其高密度地吸收白色涂料墨水,有效增强了白墨与织物表层之间的附着力,能够抑制白色涂料直喷墨水在深色织物表层渗化,同时能够有效提高白色涂料直喷墨水在深色织物上的遮盖力和附着力,使固化后的白色涂料层具有良好的锐利度以及明亮的白度,保证了印花后图案精细、线条清晰,大大拓宽了白色涂料直喷墨水的适用范围。本发明的制备方法生产过程工艺简单、环保无毒、适应性强、使用简单;采用本发明的直喷数码印花工艺所制得的印花织物色牢度高、花色均匀精细、线条锐利清晰。
附图说明
图1为实施例1所得织物的照片;
图2为实施例2所得织物的照片;
图3为实施例3所得织物的照片;
图4为实施例4所得织物的照片;
图5为实施例5所得织物的照片;
图6为实施例6所得织物的照片;
图7为对比例1所得织物的照片;
图8为对比例2所得织物的照片;
图9为空白试验所得织物的照片。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细说明。
本发明提供了一种白墨预处理液及其制备方法、直喷数码印花工艺。
该预处理液包括以下按质量份计的各组分:阳离子胶态二氧化硅1~5份、粘合剂3~7份、干燥抑制剂2~6份、多价碱土金属盐3~8份、防渗色剂3~8份、阳离子媒染剂1~5份、杀菌剂0.1~0.5份、润湿消泡剂0.1~0.5份、去离子水60~80份。
以上配方中,粘合剂为阳离子水溶性粘合剂或非离子型水溶性粘合剂;其中,阳离子水溶性粘合剂选自阳离子改性丙烯酸酯共聚物、三甲基乙基氯化铵改性淀粉、二乙基氨基乙基铵-甲基氯盐改性淀粉中的至少一种;非离子型水溶性粘合剂选自聚乙烯醇、羟乙基纤维素、甲基纤维素、糊精、淀粉、阿拉伯胶、聚乙二醇、聚丙烯酰胺、聚丙二醇和葡聚糖中的至少一种。干燥抑制剂选自聚乙二醇、乙二醇、2-吡咯烷酮、二甘醇、三甘醇、丙三醇、丙二醇、1,3-丁二醇、乙二醇单丁醚、三甘醇单甲醚、3-甲基-1,5-戊二醇、三甘醇单丁醚、二甘醇单甲醚、乙二醇单甲醚中的一种或者任意两种以上的混合。多价碱土金属盐选自铍、镁、钙、锶、钡中的一种或任意两种以上的混合。防渗色剂选自蚁酸、醋酸、苯磺酸、对甲苯磺酸及其衍生物、丙酸以及芳族酸中的一种或任意两种以上的混合。阳离子媒染剂选自乙烯基卞基三甲基氯化铵、乙烯基吡咯烷酮、乙二醇二甲基丙烯酸酯、聚二烯丙基二甲基氯化铵中的一种或任意两种以上的混合。杀菌剂为Proxel GXL、 BIT-20、1,2-苯并异噻唑啉-3-酮中的一种。润湿消泡剂选自法国蓝星有机硅公司生产的SP3309、美国空气化学公司生产的104、104E中的一种。
本发明还提供了一种如上所述的预处理液的制备方法,其包括如下步骤:将去离子水、润湿消泡剂、杀菌剂、干燥抑制剂、多价碱土金属盐依次投入物料机中,在300~400r/min下搅拌20~30min使其混合均匀;然后依次投入阳离子胶态二氧化硅、阳离子或非离子粘合剂和阳离子媒染剂,在400~500r/min下搅拌20~30min使其混合均匀;在300~400r/min转速下边搅拌边缓慢滴加防渗色剂后,搅拌30~40min使其混合均匀;将搅拌混合完成的混合液使用300~500目滤布过滤,即得预处理液。
本发明还提供了一种采用如上所述的预处理液进行的直喷数码印花工艺,其包括以下步骤:
S1、将配制好的预处理液灌装于喷雾器中,摇匀预处理液;将喷雾器设置在远离打印区域且通风良好的区域;
S2、正式喷涂前进行预喷,避免在织物上喷涂时产生较大的液滴;然后将喷雾器设置在距待处理织物0.3~0.5m处,对浅色织物进行喷涂时从上到下、从左到右喷涂一次,对深色织物进行喷涂时从上到下、从左到右喷涂一次后,再从右到左、从下到上喷涂一次,使预处理液在织物表面呈细小雾滴状;
S3、预处理液喷涂完毕后,使用泡沫滚筒在织物上均匀地朝一个方向进行清洁,确保预处理液覆盖均匀;
S4、通过数码印花机器将绘制图案以白色涂料直喷墨水直接喷涂在经过预处理后的织物上,打印结束后对织物以热压温度160~180℃压烫3~5min,压印时采用无硅树脂仿羊皮纸隔衬。
实施例1:
一种白墨预处理液,其包括以下按质量份计的各组分:
阳离子胶态二氧化硅 1.5份 阳离子改性丙烯酸酯共聚物 3.5份
聚乙二醇 6.5份 多价碱土铍盐 4.5份
蚁酸 3.5份 乙烯基卞基三甲基氯化铵 2.5份
Proxel GXL 0.1份 SP3309 0.4份
去离子水 77.5份。
该白墨预处理液的制备方法如下:将配方量的去离子水、润湿消泡剂、杀菌剂、干燥抑制剂、多价碱土金属盐依次投入物料机中,在300r/min下搅拌20min使其混合均匀;然后依次投入阳离子胶态二氧化硅、阳离子或非离子粘合剂和阳离子媒染剂,在300r/min下搅拌20min使其混合均匀;在300r/min转速下边搅拌边缓慢滴加防渗色剂后,搅拌30min使其混合均匀;将搅拌混合完成的混合液使用300目滤布过滤,即得预处理液。
将本实施例所制得的预处理液应用于直喷数码印花中,其具体步骤如下:
S1、将配制好的预处理液灌装于喷雾器中,摇匀预处理液;将喷雾器设置在远离打印区域且通风良好的区域;
S2、将喷雾量设置成中等喷量,正式喷涂前进行预喷,避免在织物上喷涂时产生较大的液滴;然后将喷雾器设置在距待处理织物0.3~0.5m处,对浅色织物进行喷涂时从上到下、从左到右喷涂一次,对深色织物进行喷涂时从上到下、从左到右喷涂一次后,再从右到左、从下到上喷涂一次,使预处理液在织物表面呈细小雾滴状;喷涂过程中换方向前喷涂范围应超出织物的边缘,这样可以防止换方向前过多预处理液积聚在织物上;在潮湿环境下,在喷涂预处理液之前,需要对织物进行热压温度180℃、10~15s的预压,预压时采用无硅树脂仿羊皮纸 (硬脂氯化铬合成纸)隔衬,这样可以去除纤维中自然渗入的湿气;
S3、预处理液喷涂完毕后,使用泡沫滚筒在织物上均匀地朝一个方向进行清洁,确保预处理液覆盖均匀;
S4、通过数码印花机器将绘制图案以白色涂料直喷墨水直接喷涂在经过预处理后的织物上,打印结束后对织物以热压温度180℃压烫3~5min,压印时采用无硅树脂仿羊皮纸隔衬。
实施例2:
一种白墨预处理液,其包括以下按质量份计的各组分:
阳离子胶态二氧化硅 2.5份 三甲基乙基氯化铵改性淀粉 4.5份
乙二醇 5.5份 多价碱土镁盐 3.5份
醋酸 4.5份 乙烯基吡咯烷酮 1.5份
BIT-20 0.1份 润湿消泡剂104 0.5份
去离子水 77.4份。
本实施例的制备方法和直喷数码印花工艺与实施例1相似,此处不再一一赘述。
实施例3:
一种白墨预处理液,其包括以下按质量份计的各组分:
阳离子胶态二氧化硅 2份 二乙基氨基乙基铵-甲基氯盐改性淀粉 4份
2-吡咯烷酮 6份 多价碱土钙盐 4份
苯磺酸 4份 乙二醇二甲基丙烯酸酯 2份
1,2-苯并异噻唑啉-3-酮 0.1份 润湿消泡剂104E 0.4份
去离子水 77.5份。
本实施例的制备方法和直喷数码印花工艺与实施例1相似,此处不再一一赘述。
实施例4:
一种白墨预处理液,其包括以下按质量份计的各组分:
阳离子胶态二氧化硅 3份 聚乙烯醇 5份
二甘醇 7份 多价碱土锶盐 5份
对甲苯磺酸 5份 聚二烯丙基二甲基氯化铵 3份
Proxel GXL 0.1份 润湿消泡剂SP3309 0.3份
去离子水 71.6份。
本实施例的制备方法和直喷数码印花工艺与实施例1相似,此处不再一一赘述。
实施例5:
一种白墨预处理液,其包括以下按质量份计的各组分:
阳离子胶态二氧化硅 3份 羟乙基纤维素 5份
丙三醇 7份 多价碱土钡盐 5份
丙酸 5份 乙烯基吡咯烷酮 3份
1,2-苯并异噻唑啉-3-酮 0.1份 润湿消泡剂104E 0.3份
去离子水 71.6份。
本实施例的制备方法和直喷数码印花工艺与实施例1相似,此处不再一一赘述。
实施例6:
一种白墨预处理液,其包括以下按质量份计的各组分:
阳离子胶态二氧化硅 1份 阿拉伯胶 3份
乙二醇单丁醚 5份 多价碱土铍盐 5份
芳族酸 3份 聚二烯丙基二甲基氯化铵 3份
BIT-20 0.1份 润湿消泡剂104E 0.4份
去离子水 79.5份。
本实施例的制备方法和直喷数码印花工艺与实施例1相似,此处不再一一赘述。
效果验证
采用市售某预处理液A和预处理液B作为对比例1和对比例2,按照与实施例1基本相同的直喷数码印花工艺对织物进行数码印花,向未经过预处理液处理的织物喷印相同的白色涂料直喷墨水作为空白试验组;分别对实施例1~6的预处理液和对比例1、2的预处理液进行性能指标检测,对采用实施例1~6的预处理液进行数码印花所得的织物、采用对比例1、2的预处理液进行数码印花所得的织物和空白试验组所得的织物分别进行颜色深浅检测、耐摩擦色牢度测试、耐皂洗色牢度等指标测试,其具体检测方法如下:
1、数码印花后的涤纶织物的颜色深浅检测:
L值(明亮值)的大小用测色配色系统测试所得,直接测量读数由一个常数L值表示,L值越小,表示颜色越暗;反之则表示颜色越亮,将所印花单色块折成4层放到X-rite测色配色仪器上,然后测定织物单色块的色密度值,为了读数准确测定4个不同的位置,测色仪器直接读出平均值,采用印花后的平均L值作为评判标准。
2、耐摩擦色牢度的测定
耐摩擦色牢度的测定参照《纺织品色牢度试验耐摩擦色牢度》AATCC8-2004,评定沾色用灰色样卡的评定级别为1、1-2、2、2-3、3、3-4、4、4-5、5,其中1级为最差,沾色非常严重,5级为最好,没有沾色。
3、耐皂洗色牢度的测定
耐皂洗色牢度的测定参照《纺织品色牢度试验耐洗色牢度:试验2》AATCC61-2003,评定变色用灰色样卡的评定级别为1、1-2、2、2-3、3、3-4、4、4-5、5,其中1级为最差,变/褪色非常严重,5级为最好,没有变/褪色。
各项主要技术性能指标及印花织物外观分别如表1、图1~9所示。
表1 实施例1~6、对比例1~2及空白实验组性能指标对比
检测项目 实施例1 实施例2 实施例3 实施例4 实施例5 实施例6 对比例1 对比例2 空白试验组
粘度cps 2.3 2.1 2..5 3.5 3.3 2.5 3.3 4.2 --
张力d/cm 33.2 34.3 34.2 34.5 34.2 33.8 35.1 32.3 --
PH值 4.3 4.5 3.9 4.2 4.3 4.1 4.5 4.1 --
外观 半透明 半透明 半透明 乳白色 乳白色 半透明 乳白色 乳白色 --
预处理液与白墨接触后的初步干燥时间s 32 35 30 32 31 36 75 52 --
L值(明亮值) 85 83 89 85 86 82 32 56 12
耐摩擦色牢度 3-4 3 4 3-4 3-4 3-4 2 2 --
耐皂洗色牢度 4 3-4 4-5 4 4 4 2-3 2-3 --
印花织物外观 白色明亮且均匀 白色明亮且均匀 白色明亮且均匀 白色明亮且均匀 白色明亮且均匀 白色明亮且均匀 白色暗淡且不均匀 白色略显暗淡且不均匀 白色几乎完全渗透
注:预处理液与白墨接触后的初步干燥时间,时间越短说明预处理液的反应速度越快,最终固化后打印图案的牢度将更优。
由表1和图1~9可知,本发明采用科学的配方对阳离子胶态二氧化硅、粘合剂、多价碱土金属盐、防渗色剂、阳离子媒染剂等进行了科学的配制,使得直喷白墨预处理液具有良好的分散稳定性,使用时涂布非常均匀,预处理液会形成一层薄膜在织物表层,堵塞织物纤维的毛细管,从而抑制白墨在织物表层渗化,提高印花精度;通过粘合剂与阳离子胶态二氧化硅反应生成薄膜,使其高密度地吸收白色涂料墨水,有效增强了白墨与织物表层之间的附着力,能够抑制白色涂料直喷墨水在深色织物表层渗化,同时能够有效提高白色涂料直喷墨水在深色织物上的遮盖力和附着力,使固化后的白色涂料层具有良好的锐利度以及明亮的白度,保证了印花后图案精细、线条清晰,大大拓宽了白色涂料直喷墨水的适用范围,使其具有优异的市场推广应用前景。
上述实施方式仅为本发明的优选实施方式,不能以此来限定本发明保护的范围,本领域的技术人员在本发明的基础上所做的任何非实质性的变化及替换均属于本发明所要求保护的范围。

Claims (6)

1.一种直喷白墨预处理液,其特征在于:包括以下按质量份计的各组分:阳离子胶态二氧化硅1~3份、粘合剂3~5份、干燥抑制剂5~7份、多价碱土金属盐3~5份、防渗色剂3~5份、阳离子媒染剂1~3份、杀菌剂0.1~0.3份、润湿消泡剂0.3~0.5份、去离子水70~80份;其中,所述多价碱土金属盐选自铍、镁、钙、锶、钡中的一种或任意两种以上的混合;所述阳离子媒染剂选自乙烯基卞基三甲基氯化铵、乙烯基吡咯烷酮、乙二醇二甲基丙烯酸酯、聚二烯丙基二甲基氯化铵中的一种或任意两种以上的混合;所述粘合剂为阳离子水溶性粘合剂或非离子型水溶性粘合剂;所述阳离子水溶性粘合剂选自阳离子改性丙烯酸酯共聚物、三甲基乙基氯化铵改性淀粉、二乙基氨基乙基铵-甲基氯盐改性淀粉中的至少一种;所述非离子型水溶性粘合剂选自聚乙烯醇、羟乙基纤维素、甲基纤维素、糊精、淀粉、阿拉伯胶、聚乙二醇、聚丙烯酰胺、聚丙二醇和葡聚糖中的至少一种。
2.根据权利要求1所述的直喷白墨预处理液,其特征在于:所述干燥抑制剂选自聚乙二醇、乙二醇、2-吡咯烷酮、二甘醇、三甘醇、丙三醇、丙二醇、1,3-丁二醇、乙二醇单丁醚、三甘醇单甲醚、3-甲基-1,5-戊二醇、三甘醇单丁醚、二甘醇单甲醚、乙二醇单甲醚中的一种或者任意两种以上的混合。
3.根据权利要求1所述的直喷白墨预处理液,其特征在于:所述防渗色剂选自蚁酸、醋酸、苯磺酸、对甲苯磺酸及其衍生物、丙酸以及芳族酸中的一种或任意两种以上的混合。
4.根据权利要求1所述的直喷白墨预处理液,其特征在于:所述杀菌剂为Proxel GXL、BIT-20、1,2-苯并异噻唑啉-3-酮中的一种。
5.一种如权利要求1所述的预处理液的制备方法,其特征在于:包括如下步骤:将去离子水、润湿消泡剂、杀菌剂、干燥抑制剂、多价碱土金属盐依次投入物料机中,在300~400r/min下搅拌20~30min使其混合均匀;然后依次投入阳离子胶态二氧化硅、阳离子或非离子粘合剂和阳离子媒染剂,在400~500r/min下搅拌20~30min使其混合均匀;在300~400r/min转速下边搅拌边缓慢滴加防渗色剂后,搅拌30~40min使其混合均匀;将搅拌混合完成的混合液使用300~500目滤布过滤,即得预处理液。
6.一种采用如权利要求1所述的预处理液进行的直喷数码印花工艺,其特征在于:包括以下步骤:
S1、将配制好的预处理液灌装于喷雾器中,摇匀预处理液;将喷雾器设置在远离打印区域且通风良好的区域;
S2、正式喷涂前进行预喷,避免在织物上喷涂时产生较大的液滴;然后将喷雾器设置在距待处理织物0.3~0.5m处,对浅色织物进行喷涂时从上到下、从左到右喷涂一次,对深色织物进行喷涂时从上到下、从左到右喷涂一次后,再从右到左、从下到上喷涂一次,使预处理液在织物表面呈细小雾滴状;
S3、预处理液喷涂完毕后,使用泡沫滚筒在织物上均匀地朝一个方向进行清洁,确保预处理液覆盖均匀;
S4、通过数码印花机器将绘制图案以白色涂料直喷墨水直接喷涂在经过预处理后的织物上,打印结束后对织物以热压温度160~180℃压烫3~5min,压印时采用无硅树脂仿羊皮纸隔衬。
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