Printing on Textiles DTG M Series Maintenance Manual
Examples:
(1) Correct Application of Underbase:
A garment that has been properly pretreated, printed, and heat-pressed will demonstrate strong
white layer and color retention, even after several washes.
(2) Insufficient Pretreatment:
If too little pretreatment solution is applied, the
white ink will have a mottled appearance after
printing. This is due to an insufficient amount of
pretreatment to keep the white ink layer on the
surface (the ink soaks into the fibers of the shirt).
(3) Excessive Pretreatment:
Applying too much pretreatment solution will
provide you with a very good looking print
prior to washing. However, excessive
application of pretreatment will cause poor
wash fastness and durability. The white layer
becomes much more susceptible to flaking off
of the shirt in a wash if too much pretreatment
is applied.
Here, the shirt with an excessive amount of
pretreatment looks very good after printing
and pressing.
The same shirt, with excessive pretreatment
solution applied, is shown here after washing.
This shirt exhibits the cracking and loss of color
associated with too much pretreatment being
applied.
FIGURE 4-2 AN EXAMPLE OF INSUFFICIENT
PRETREATMENT
FIGURE 4-3 EXCESSIVE PRETREATMENT EXAMPLE
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