人造板饰面涂布装饰原纸的制备及其印刷适性研究

目的为了解决传统装饰原纸大量加填所导致的填料流失严重、成纸强度较低和印刷适性不理想的问题。方法实验以传统生产工艺为基础,减少原纸在抄造过程中的加填量,通过对纸张进行涂布来提高其质量。对装饰原纸表面进行涂布后检测涂布装饰原纸的物理性能和印刷适性,并采用PDA动态渗透特性分析仪研究装饰原纸的表面孔隙开放程度和内部孔隙大小情况。结果涂布装饰原纸与市售高档装饰原纸相比,白度提高了0.6%,粗糙度下降了6%,匀度提高了33%,抗拉强度提高了340%,印刷色密度在暗调部分提高了21%,中间调部分提高了29%,亮调部分提高了55%。结论当原纸内钛白粉加填的质量分数为20%,涂料中二氧化钛和瓷土质量比为50∶50~60∶40之间的涂布装饰原纸的各项性能得到改善。

Preparation of Coated Decorative Base Paper and Its Printing Performance

This work aimed to solve the problems of traditional decorative base paper such as serious filler wastage, low paper strength and poor printability caused by massive filling of titanium dioxide. The experiment was based on the traditional processing technology, the filling amount of base paper in the process of paper making was reduced and the quality of the paper was improved through coating. After coating the surface of the decorative base paper, the physical properties and the printability of coated decorative base paper were tested, and the surface pore opening degree as well as the internal pore size of decorative base paper was studied adopting PDA Dynamic Penetration Characteristics Analyzer. Compared to the commercial base paper produced by the traditional process, the whiteness, evenness and tensile strength of coated decorative base paper was increased by 0.6%,33% and 340% respectively, and its roughness was decreased by 6%. In addition, the color density of dark tone, middle tone and high tone was improved by 21%,29% and 55%, respectively. When the filling weight of the coating decorative base paper was 20% and the ratio of pigments was between 50:50 and 60:40, the performances of the coated decorative base paper were significantly improved.