软包装印刷中无溶剂胶黏剂与水性油墨相容性研究

Using Solventless Adhesives with Water-Based Inks in Flexible Packaging

如今大部分印刷采用的是溶剂型油墨,随着人们对环保关注度的提高,水性油墨以其环保性越来越多地应用于软包装印刷中,但一般复合用无溶剂胶黏剂还不能与水性油墨一起使用,因此限制了无溶剂胶黏剂在软包装复合薄膜中的应用。针对以上问题,本文对不同种类的无溶剂胶黏剂在水性柔印油墨上的应用性能进行比较,讨论不同组分胶黏剂的性能,特别是剥离性能和油墨相容性。

The majority of the printing today is done with solvent-based inks, but as environmental concerns increase, alternatives to solvent are desired. It has been generally assumed that solventless adhesives cannot be used in combination with water-based inks. This has been a limitation for converters desiring to laminate using solventless adhesives. This paper will compare different solventless adhesives and their performance when applied on flexographic water-based inks. The results with various prepolymer and polyol combinations typically used in flexible packaging adhesives will be discussed. In particular, peel adhesion and ink decaling will be covered.