Inkjet Digital Printing: Towards a more wash-resistant polyester print

直接用于服装的喷墨印花是一种可替代的纺织品印花技术。这项技术使用计算机编程的打印头与喷墨推动墨滴在织物上。它允许快速定制打印，这是运动服装市场所期望的（团队徽标，名称，赞助等）。这种方法对于新设计具有较低的前期成本，允许为定制设计创建低生产运行。许多印刷技术是可能的，如酸，染料升华，颜料和反应。然而，颜料油墨更简单，更有效。它们也是水基的，这意味着需要更少的溶剂，这使得这项技术对环境友好。 不幸的是，水基颜料喷墨油墨在聚酯织物上具有低粘附性，这主要是因为用于吸湿和透气性的松散的纺织品结构。此外，低化学表面能和低数量的化学反应位点在表面之间产生不充分的相互作用。因此，膜的低粘附性转化为洗涤循环的低耐久性。 该项目旨在通过三种粘附机制（机械，分散和化学）进行预处理，以提高聚酯织物的喷墨洗涤耐久性。

Direct to Garment (DTG) inkjet printing is an alternative technology for a more sustanianble printing on textile. This technology uses a computer programmed printhead with an inkjet to propel ink droplet on the fabric. It allows fast customized print, which is desirable for the sport garment market (team logo, names, sponsorship, etc.). This method has lower upfront cost for new design allowing creation of low production run for custom design. Many printing techniques are possible such as acid, dye-sublimation, pigment and reactive. Nevertheless, pigment inks are simpler and more efficient. They are also water-based, meaning the require less solvent, which makes this technology eco-friendly. Unfortunately, water-based pigment inkjet inks have low adhesion on polyester fabric mostly because of loose textile structure for moisture wicking and breathability. Moreover, the low chemical surface energy and low number of chemical reactive sites creates insufficient interaction between the surfaces. Consequently, the low adhesion of the film translates to a low durability of wash cycle. This project aims to increase the inkjet washing durability on polyester fabric with a pre-treatment via three adhesion mechanisms: mechanical, dispersive and chemical.