In narrow web web printing, cold transfer can be used in flexographic printing as well as in offset printing and letterpress/letterpress.
Mostly, cold transfer is used in flexographic printing, where a UV-curing adhesive is applied to a substrate by means of an anilox roller with an application-specific scoop volume via a usually exposed polymer plate.
Immediately afterwards, the cold transfer web is applied to the substrate by means of a press roll.
After this step, the UV adhesive is cured by the cold transfer product using UV radiation and the substrate is removed. The ultra-thin layers of the product remain on the substrate at the points where the adhesive was previously applied.
In subsequent printing units, the product can be overprinted inline in multiple colors, whereby numerous metallic effects can be individually achieved.
Depending on the absorbency of the substrate used, the amount of adhesive applied must be adjusted via the anilox roller. The adhesive application can be controlled very precisely in flexographic printing via the scoop volume used and the engraving type of the anilox roller.
We have a hughe portfolio of products available in the narrow web cold foil sector. Just visit us at the fair or contact us and we will be happy to give you a closer insight.
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