POLYPRINT SA – TEXJET OPERATION MANUAL V6.4 EN
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3.4.
The preparation of the black textile
Pretreatment on dark and pastel colored textiles
The garment pre-treatment is very important!
Printing to white fabric requires no pre-treatment, however printing to
coloured and black fabrics will require the use of the white ink. The pre-
treatment is designed to provide a suitable coating to take the printed inks.
Before pre-treating the fabric it should flatten is out under a heat press.
Then the pre-treatment should be applied with a suitable spray gun (we
recommend Wagner W550). One thorough coat applied to the relevant area
of the fabric is enough, (remember to thoroughly clean your spray gun when
you are finished using it). Use a mohair blend roller to flatten the coating
over your textile. Apply in one direction with pressure and only once at
area. This is helping for a better application of the coating. Dry it for 30
seconds under a heat press with high pressure between 180-150ºC with
heat resistant paper over it (we recommend Texjet Sheets). It will also press
the fabric fibres flat to give a good printing surface. Make sure the textile is
completely dry before printing.
Some garments may burn or turn yellow under high temperatures like
180ºC. In such cases take advice on the following temperature and time
diagram.
