Inkjet Primers - Daybreak-Digital

Which Inkjet Primer is Best?

Dye-based inks require a higher coat weight of primer, add approximately .5 pounds to figures in chart below.
If several flexo print units are available, it is advisable to use them in applying primers.
If adhesion is not available with primer alone (for instance, dyne level is below 38), it might be necessary to apply a thin film of an adhesion promoting primer (such as 7.4096) first, and then applying primer.
If digital printing is being done in-line, it is important to make sure primer is sufficiently dry in order to achieve a quality print. For in-line priming and printing, start with 150 FPM. Incrementally increase line speed, checking print quality as line speed increases. An improperly cured primer will present itself as a slurred image.

Description	Application Method	Digital Ink System	Solids %	Target GSM (Paper)	Target GSM (Film)	Comments
Code: 21.9 matte/satin wb Primer	flexo, rod, gravure, air knife	aqueous/uv inkjet	48%	3.5 – 4	6	Good for all paper, some BOPP
Code: 21.3 matte/satin wb Primer	flexo, rod, gravure, air knife	aqueous/uv inkjet	42%	4 – 5	6 – 5	Good for all paper, BOPP
Code: 21.1 gloss wb primer	flexo, rod, gravure, air knife	aqueous/uv inkjet	40%	5 – 6	6 – 7	Good for all paper, BOPP
Code: 21.4 satin wb primer	flexo, rod, gravure, air knife	uv inkjet/eco-colvent	35%	.5 – 1.5	.5 – 1.5	Good for paper, wide variety of filmic substrates. Also good as a first hit to establish adhesion and then subsequent application of primer.
Code: 7.4096 neutral wb clear	flexo, rod, gravure, air knife	for use as an adhesion primer	25%	.5 – 1	1	This primer is good to use as a first hit to establish adhesion, and then a subsequent application of primer.
Code: 21.6 satin wb primer	flexo, rod, gravure, air knife	eco-solvent/solvent	30%	3 – 4	4 – 5
Code: 21.10 opaque white wb sealant	rod, gravure, air knife	n/a	55%	8+	8+	For use as a sealant on non-woven and woven fabrics. This product provides a fine base for primer.