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Heini Virtanen Kaisa Vehmas Tomi Erho Maria Smolander 《Packaging Technology and Science》2014,27(10):819-830
Trametes versicolor laccase papers were prepared, and their suitability was tested for anticounterfeiting and oxygen indicator concepts in packaging applications. Laccase was coated and printed onto paper with a flexographic ink base, a sulfo polyester resin, Hydro‐Rez 1100D (HZ1100D). Laccase remains active on paper with flexographic ink HZ1100D after printing with flexographic press. Colour change of papers was observed when 2,2‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulfonic acid) diammonium salt (ABTS) solution was applied to the paper. A strong colour change to dark green was obtained on the papers prepared by coating or printing of laccase with HZ1100D onto EUCA paper. EUCA paper appeared to be well suited for laccase‐based indicator applications because it remained rough even after ink deposition, allowing rapid absorption of ABTS solution. Finally, the indicators demonstrated to work as oxygen indicators in a package. Indicator colour was changed when oxygen was leaked to the package. As a conclusion, the laccase papers described here would be well suited for various indicator applications and could be produced using flexographic printing, allowing large scale manufacturing. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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为了改变柔版印刷中专色油墨人工配色的现状,通过实验对柔版印刷专色油墨调配数学模型的建立进行了探讨;并通过回归法建立了深蓝色区的柔版印刷专色油墨调配的数学模型,还验证了配色模型的精度。 相似文献
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根据静电照相直接制版对光导材料的要求,以苯乙烯、丙烯酸、甲基丙烯酸为单体,按不同配比合成出成膜树脂St-AA和St-MAA。通过分别测试它们的酸值、碱水溶解性和静电带电性,确定出当St与AA和St与MAA配料的摩尔比在1.5∶1到1∶1之间时,成膜树脂的碱水溶解性较好,静电带电性能也较好。 相似文献
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代表当今印刷制版业潮流的CTP技术的应用,在欧、美等地区发达国家得到快速普及。我国CTP技术的应用随着我国经济的发展,越来越被印刷制版界所接受,到目前为止,我国有400多台CTP机投入使用。随着CTP技术的进一步完善、成熟,CTP机价格的下调、国产CTP版材的大量投放市场,我国将有更多的印刷制版厂应用CTP技术。 相似文献
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柔性版制版质量控制是柔性版印刷品质优劣的关键,通过分析CDI制版的技术原理与设备结构,将感光度、分辨率以及曝光速度作为主要性能参数,设计实验,绘制和分析网点复制曲线,探究CDI制版设备参数的优化,对柔印标准化管理和实际生产具有积极推动作用。 相似文献
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CTcP技术采用普通预涂感光版,在国内印刷市场中的应用正逐渐增加。为了更好地控制网点的复制过程,提高印刷质量,通过实验和对比方法,采用6套不同方案,对测试版进行了输出,探讨了印版网点的复制特性,分析了印版网点的微观结构。结果表明:制版工艺、加网线数、成像分辨率均对网点复制有一定的影响。与传统的CTF工艺相比,CTcP制版工艺的网点复制性能更佳,表现为成像更精确,均匀性更好,阶调复制曲线更平滑,制版过程的可控性更佳。 相似文献
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