Paper Title:

Research in Compositions and Coloration Performance of Polyurethane Ink Absorption Coating

Periodical Advanced Materials Research (Volume 174)
Main Theme Printing and Packaging Study
Edited by OUYANG Yun, XU Min and YANG Li
Pages 498-501
DOI 10.4028/www.scientific.net/AMR.174.498
Citation Xu Wei Hu et al., 2010, Advanced Materials Research, 174, 498
Online since December, 2010
Authors Xu Wei Hu, Lu Hai Li, Sheng Min Zhao, Peng Du, Wen Zhao, Xian Leng, Zhan Kun Zhang
Keywords Ink Absorption Coating, Nano Alumina, Polyurethane, Water Resistance
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Abstract

Water-based polyurethane forms continuous and dense film after fully drying. Ink is lowly absorbed by PU film, affecting drying rate and color reproduction. In order to improve the absorption of ink on PU film, PU/nano alumina compound was prepared by adding nano alumina in PU and stirring at high speed. PU ink absorption coating was got by being coated on the substrate. The influences of different content of nano alumina to transmittance of coating and solid density of color blocks were researched. The influences of soft and hard segment of PU to image resolution and water resistance were also researched. It can be seen that transmittance reduces when content of nano alumina increases. Droplets spread less when using PU of hard segment and image resolution and solid density are also higher. At the same time, water resistance of solid blocks is much better when printed on PU of hard segment.