METHOD OF DIGITAL TEXTILE PRINTING FOR POLYPROPYLENE TEXTILES

摘要

The present invention relates to a processing method for digital textile printing of polypropylene fabric. According to the present invention, color expression and color fastness are increased by facilitated fixation of an ink; the ink is prevented from being smeared or from spreading; and thus image sharpness can be improved. The processing method includes: a pretreatment step of completely drying the polypropylene fabric using a tenter after performing a padding treatment on the polypropylene fabric with a pretreatment solution comprising 1.6-10 wt% of a complex thickening agent comprising a carboxymethyl cellulose-based sizing agent, sodium alginate, and polyacrylate, 0.5-13 wt% of a urea-based hydrotrope agent, and the remainder consisting of water; a digital printing step of printing the polypropylene fabric using a digital ink jet printer; and a post-treatment process of heating the polypropylene fabric by a dry-type heating method, washing the polypropylene fabric with cold water, washing the polypropylene fabric with warm water, and naturally drying the polypropylene fabric.