Year: 2011
Type: article
Abstract: Digital finishing of textiles involves the application of polymer finishes onto the textile substrates in controllable quantities and at prescribed locations that gives the substrate multiple functionalities and performance characteristics. In this study, piezoelectric Drop-on-Demand inkjet printing of shrink resist finishes onto textiles was investigated with a view to imparting dimensional stability and potentially could produce sculptured textural effects with subsequent laundering felting of untreated areas. Therefore, a range of formulations containing Synthappret BAP was applied onto wool and cotton fabrics using traditional finishing method, pad-dry-cure, and the shrink resist performance was evaluated. Based on the shrink resist performances, a suitable formulation containing 40 g/L Synthappret BAP was identified for digital ink development for shrink resisting, and the viscosity and surface tension of this initial formulation was optimised to formulate inkjet inks to be tested in piezoelectric DMP to evaluate jettability performances. ?Chaotic? spraying of drops was observed for the inks containing lower concentrations of rheology modifiers, and the whole surface of the printhead facing the substrate was wetted after a few cleaning cycles. In contrast the inks containing higher concentrations of modifiers jetted well initially however became unstable after few minutes of operation. The formulation containing 45% glycerol as the viscosity modifier performed best out of all the inks tested, however even it also became unstable after printing for few minutes.
Author: Nazmul Karim
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2915564499