Substrate primer coating machine for Indigo press
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HP Indigo industrial presses can print on a wide variety of substrates including paper, polyethylene, polypropylene, polyester, PVC, polycarbonate, etc. To facilitate ink transfer and adhesion, a connecting“primer” layer is mandatory. Generally Indigo press clients will buy a substrate primer coating machine at the same time.
A primer is a solution that is applied to the substrate surface prior to printing ensuring optimum ink transfer and adhesion. Most synthetic substrates can be upgraded to high levels of chemical and physical consistency with the application of substrate primers from a primer coater machine.
HP Indigo highly recommends the use of corona treatment for the effective production of Indigo digitally printed labels and packaging films. Raising the surface energy of a substrate improves wetting and primer adhesion. It broadens the operating window of material performance which improves both primer to substrate and varnish to ink adhesion properties. In corona treatment, the substrate surface is bombarded with electrons to raise the dyne level. The minimum recommended level is 42 dynes.
Primer is transparent water-base varnish. Our primer coating machine machine use 5 or 6 IR lamps to dry the primer completely and rapidly.
We have complete and customized solution of primer coating equipments from A3+ to B2 size, from flat roller to anilox roller and from sheet to web.
We welcome enquiry and test purpose of contact. We will be more than pleased to offer our solution for you. For more information or quotation, please contact us now!