What types of dyes are used for digital printing on a) natural fibres, b) polyester?
Select Direct digital print. Reactive dyes are used for natural fibres, disperse dyes for polyester. • Artwork needs to be provided at how many dots per inch (dpi)? Select Technical inquiries. Artwork needs to be at 254 dpi. • Describe the pre-treatment and processing for: • printing with reactive dyes The steps for pre-treating and processing with reactive dyes include: • the fabric is coated with a carrier paste to help fix the dyes • the fabric is steamed to open the fibres and allow the dye molecules to penetrate the fibre • the fabric is washed to remove the coating and any excess dye • the fabric is then pressed to finish. • printing with disperse dyes The steps for pre-treating and processing with disperse dyes include either: • Where the dyes are printed onto transfer paper, then pressed to sublimate (extract) the dyes onto the fabric where they are fixed during the pressing process and the colour develops. • The fabric can also be steamed in a similar process to fixing reactiv
