CN117247716A - 白墨烫画打印膜及其吸墨涂料 - Google Patents
白墨烫画打印膜及其吸墨涂料 Download PDFInfo
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Abstract
本发明涉及转印介质技术领域,具体公开一种白墨烫画打印膜及其吸墨涂料,吸墨涂料包括如下重量份数组分:透明粘合树脂5‑10份、聚乙烯吡咯烷酮15‑20份、分散剂3‑8份、气相氧化铝分散液5‑10份、气相二氧化硅1‑3份、二丙二醇单丁醚5‑10份、甘油10‑20份、水45‑70份;所述吸墨涂料的粒径≤500nm。本发明吸墨涂料粒径分布更小且具备优异的分散稳定性,呈纳米级微乳液状态,大流量连续喷印不断线不堵头,可满足数码喷墨打印机喷墨印刷使用,大大降低了设备投资门槛且吸墨介质涂层表观不存在线条缺陷。
Description
技术领域
本发明涉及转印介质技术领域,具体涉及一种白墨烫画打印膜及其吸墨涂料。
背景技术
在不同的产品上,都印刷有各种各样的商标或其他装饰图案,一般是先用墨水涂布在转印膜上,形成图案,再通过相应设备将转印膜上的图案转移到各类产品上,目前常用的工艺是白墨烫画,是一种替代传统柯式烫画生产用的新型热转印底片,具有吸墨速度快、色彩鲜艳且可秒撕等效果,广泛应用于快返服饰、箱包及软装等纺织品热转印数码印花行业。
白墨烫画的工作原理是将图案打印在转印膜上,经热压机压烫后将膜上的图案转印到各种布料上,具体地说,白墨烫画需要先在基膜的离型层上涂布吸墨层,然后用水性涂料墨水打印,水性墨水和吸墨层游离结合,再在图案上打印白墨,利用白墨粘上热熔粉,从而制成转印膜,在转印时,通过高温把热熔粉熔化,并使水性墨水和吸墨层脱离,熔化的热熔粉粘附在物品上,撕除基膜而实现转印。
中国公开专利文献(CN108909224A)公开一种数字喷墨烫标的制作工艺,其中步骤二具体为通过涂布机将吸墨层涂至PET胶片的水性哑光涂料层上。
中国公开专利文献(CN116330875A)公开一种两用型转印膜,包括基膜以及覆盖在基膜上的转移涂层,转移涂层的组分及重量百分比如下:油性高固含聚氨酯树脂20-60%、油性透湿透气聚氨酯树脂20-60%、密胺架桥剂2-6%、密胺促进剂2-6%、架桥剂3-10%、固化剂2-10%、DMF5-15%、乙酯15-25%。制作工艺中基膜在涂膜设备内沿输送方向不断输送,转移涂层胶水加入涂膜设备上的涂胶辊中,涂胶辊将转移涂层胶水均匀覆盖在基膜上;涂膜设备采用涂布机或凹版印刷机。
中国公开专利文献(CN103009860A)公开一种用于喷墨打印的金RC相纸,包括纸基,所述纸基两面分别涂覆带颜色母料的聚乙烯薄膜,正面的带颜色母料的聚乙烯薄膜上依次设置底胶层和含金吸墨层。通过挤压涂布法将吸墨层涂料涂布在底胶层上,其涂布量为170-180g/m2,经干燥道40℃-90℃烘干固化,从而形成吸墨层。
现有技术中白墨烫画打印膜上吸墨介质涂层通常需要使用大型涂布机进行凹版涂布工艺制备,该工艺设备投资大、生产损耗高且吸墨介质涂层表观存在线条等缺陷。
发明内容
本发明的发明目的在于提供一种白墨烫画打印膜及其吸墨涂料,可满足数码喷墨打印机喷墨印刷使用。
为实现上述发明目的,本发明采用的技术方案是:
打印膜吸墨涂料,包括如下重量份数组分:透明粘合树脂5-10份、聚乙烯吡咯烷酮15-20份、分散剂3-8份、气相氧化铝分散液5-10份、气相二氧化硅1-3份、二丙二醇单丁醚5-10份、甘油10-20份、水45-70份;所述吸墨涂料的粒径≤500nm。
优选地,所述透明粘合树脂为聚氨酯树脂。
优选地,所述聚氨酯树脂为水性聚氨酯二级分散体,固含量为25%-35%。
优选地,所述聚乙烯吡咯烷酮的相对分子质量为8000-20000。
优选地,所述分散剂为活性成分为100%的结构聚合物分散剂。
优选地,所述气相氧化铝分散液为碱性,固含量为35%-45%。
优选地,所述气相二氧化硅的比表面积200-400m2/g,粒径20nm-60nm,含量≥98%。
优选地,该吸墨涂料的制备方法为:将所述重量份数的透明粘合树脂、聚乙烯吡咯烷酮与水混合均匀后,依次加入所述重量份数的分散剂、气相氧化铝分散液、气相二氧化硅,然后在研磨20min-30min后搅拌状态下依次加入二丙二醇单丁醚和甘油,最后静置、过滤。
优选地,所述过滤方式为采用孔径为100-500nm微孔膜进行真空抽滤。
本发明还提供一种白墨烫画打印膜,包括基材、离型层及吸墨介质涂层,所述吸墨介质涂层采用上述打印膜吸墨涂料喷印在离型层表面。
与现有技术相比,本发明具有以下有益效果:
本发明水性聚氨酯二级分散体为吸墨介质涂层提供极佳透明性,同时作为为吸墨介质涂层体系的网路骨架提供涂层良好的结构刚性;聚乙烯吡咯烷酮具有极佳的亲水性,作为吸墨介质涂层中的吸墨剂能快速吸收墨水中的水和溶剂等成分;分散剂的主要作用通过活性基团结构在树脂和粉体材料之间形成双电层和空间位阻,使得吸墨涂料各成分分散均一稳定;气相氧化铝具有极高的表面能且呈阳离子特性,因而需要以碱性分散液的方式添加到体系制备吸墨涂料,在吸墨介质涂层中主要起固墨作用,提高印刷色彩的饱和度和稳定性,增强印刷色彩的视觉效果;气相二氧化硅主要用于提升吸墨涂料体系的流变性能,同时可增加介质涂层的抗粘和防污能力;二丙二醇单丁醚作为成膜助剂,为吸墨涂料在喷印到基膜上时具有极佳的成膜效果;甘油作为保湿剂,主要为防止吸墨涂料结块堵塞喷头。
本发明中吸墨剂相比传统的吸墨剂,具有更加优异的性能主要表现在:吸墨涂料粒径分布更小且具备优异的分散稳定性,呈纳米级微乳液状态,大流量连续喷印不断线不堵头,可满足数码喷墨打印机喷墨印刷使用,大大降低了设备投资门槛。数码喷印制备的吸墨介质涂层呈多元网络结构,使用聚乙烯吡咯烷酮作为吸墨剂,不仅可吸收墨水中的水分,还能吸附墨水中的醚和醇,聚乙烯吡咯烷酮吸收水和溶剂后具备一定的粘度可避免墨水摊开的缺陷;使用气相氧化铝做固色剂相比传统阳离子聚合物固色剂而言,气相氧化铝的固墨性能更强,明显提升印刷颜色的色彩饱和度,气相氧化铝具备一定的光学效应,可增强印刷色彩的视觉效果。
本发明中喷印制备的白墨烫画打印膜吸墨介质涂层表面自由能>60mN/m (BSISO 19403-2:2017),喷印制备的白墨烫画打印膜采用100%墨量进行数码印花的颜色层指触干时间≤1min(GB/T 1728-2020 7.2.2 乙法-指触法),间隔24小时以上的白墨烫画打印膜数码印花对比颜色色差△E≤0.4(GB/T 18722-2002),同时吸墨介质涂层表观不存在线条缺陷。
具体实施方式
实施例1
本实施例提供一种白墨烫画打印膜,包括基材、离型层及吸墨介质涂层,所述吸墨介质涂层采用打印膜吸墨涂料使用数码喷墨打印机喷印在离型层表面,过烘箱烤干后即制备得到白墨烫画打印膜成品。
该打印膜吸墨涂料包括如下重量份数组分:透明粘合树脂10份、聚乙烯吡咯烷酮15份、分散剂5份、气相氧化铝分散液8份、气相二氧化硅3份、二丙二醇单丁醚5份、甘油15份、水60份。
其中:所述透明粘合树脂为水性聚氨酯二级分散体,固含量为30%;所述聚乙烯吡咯烷酮PVP K15,其相对分子质量为10000,CAS编号9003-39-8;所述分散剂为活性成分为100%的结构聚合物分散剂UNIQ®JET 9560;所述气相氧化铝分散液为碱性,固含量为40%;所述气相二氧化硅的比表面积200-400m2/g,粒径20nm-60nm,含量≥98%。
该吸墨涂料的制备方法为:将所述重量份数的透明粘合树脂、聚乙烯吡咯烷酮与水混合均匀后,混合方式为搅拌,搅拌速度为800 rpm,时间为15min;依次加入所述重量份数的分散剂、气相氧化铝分散液、气相二氧化硅,然后在研磨20min后搅拌状态下依次加入二丙二醇单丁醚和甘油,最后静置5h后过滤,过滤方式为采用孔径为500nm微孔膜进行真空抽滤。
本实施例吸墨介质涂层表面自由能66.64±0.78mN/m (BS ISO 19403-2:2017),喷印制备的白墨烫画打印膜采用100%墨量进行数码印花的颜色层指触干时间58 s(GB/T1728-2020 7.2.2 乙法-指触法),间隔24小时以上的白墨烫画打印膜数码印花对比颜色色差△E =0.32(GB/T 18722-2002)。
实施例2
本实施例提供一种白墨烫画打印膜,包括基材、离型层及吸墨介质涂层,所述吸墨介质涂层采用打印膜吸墨涂料使用数码喷墨打印机喷印在离型层表面,过烘箱烤干后即制备得到白墨烫画打印膜成品。
该打印膜吸墨涂料包括如下重量份数组分:透明粘合树脂6份、聚乙烯吡咯烷酮18份、分散剂8份、气相氧化铝分散液10份、气相二氧化硅2份、二丙二醇单丁醚8份、甘油12份、水65份。
其中:所述透明粘合树脂为水性聚氨酯二级分散体,固含量为30%;所述聚乙烯吡咯烷酮为PVP K25,其相对分子质量为14000,CAS编号9003-39-8;所述分散剂为活性成分为100%的结构聚合物分散剂UNIQ®JET 9015;所述气相氧化铝分散液为碱性,固含量为40%;所述气相二氧化硅的比表面积200-400m2/g,粒径20nm-60nm,含量≥98%。
该吸墨涂料的制备方法为:将所述重量份数的透明粘合树脂、聚乙烯吡咯烷酮与水混合均匀后,混合方式为搅拌,搅拌速度为500rpm,时间为10;依次加入所述重量份数的分散剂、气相氧化铝分散液、气相二氧化硅,然后在研磨20min后搅拌状态下依次加入二丙二醇单丁醚和甘油,最后静置5h后过滤,过滤方式为采用孔径为500nm微孔膜进行真空抽滤。
本实施例吸墨介质涂层表面自由能70±0.56 mN/m (BS ISO 19403-2:2017),喷印制备的白墨烫画打印膜采用100%墨量进行数码印花的颜色层指触干时间1 min(GB/T1728-2020 7.2.2 乙法-指触法),间隔24小时以上的白墨烫画打印膜数码印花对比颜色色差△E =0.29(GB/T 18722-2002)。
以上显示和描述了本发明创造的基本原理和主要特征及本发明的优点,本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明创造精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内,本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (10)
1.打印膜吸墨涂料,其特征在于:包括如下重量份数组分:透明粘合树脂5-10份、聚乙烯吡咯烷酮15-20份、分散剂3-8份、气相氧化铝分散液5-10份、气相二氧化硅1-3份、二丙二醇单丁醚5-10份、甘油10-20份、水45-70份;所述吸墨涂料的粒径≤500nm。
2.根据权利要求1所述的打印膜吸墨涂料,其特征在于:所述透明粘合树脂为聚氨酯树脂。
3.根据权利要求2所述的打印膜吸墨涂料,其特征在于:所述聚氨酯树脂为水性聚氨酯二级分散体,固含量为25%-35%。
4.根据权利要求1所述的打印膜吸墨涂料,其特征在于:所述聚乙烯吡咯烷酮的相对分子质量为8000-20000。
5.根据权利要求1所述的打印膜吸墨涂料,其特征在于:所述分散剂为活性成分为100%的结构聚合物分散剂。
6.根据权利要求1所述的打印膜吸墨涂料,其特征在于:所述气相氧化铝分散液为碱性,固含量为35%-45%。
7.根据权利要求1所述的打印膜吸墨涂料,其特征在于:所述气相二氧化硅的比表面积200-400m2/g,粒径20nm-60nm,含量≥98%。
8.根据权利要求1所述的打印膜吸墨涂料,其特征在于:该吸墨涂料的制备方法为:将所述重量份数的透明粘合树脂、聚乙烯吡咯烷酮与水混合均匀后,依次加入所述重量份数的分散剂、气相氧化铝分散液、气相二氧化硅,然后在研磨20min-30min后搅拌状态下依次加入二丙二醇单丁醚和甘油,最后静置、过滤。
9.根据权利要求8所述的打印膜吸墨涂料,其特征在于:所述过滤方式为采用孔径为100-500nm微孔膜进行真空抽滤。
10.白墨烫画打印膜,其特征在于:包括基材、离型层及吸墨介质涂层,所述吸墨介质涂层采用如权利要求1至9任一项所述的打印膜吸墨涂料喷印在离型层表面。
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