US 11,850,877 B2
Printing method with transfer of a barrier layer for producing high gloss printed products
Martin Schmitt-Lewen, Heidelberg (DE); Heike Gute, Darmstadt (DE); and Thorsten Euler, Darmstadt (DE)
Assigned to Heidelberger Druckmaschinen AG, Heidelberg (DE)
Filed by Heidelberger Druckmaschinen AG, Heidelberg (DE)
Filed on Feb. 16, 2021, as Appl. No. 17/176,463.
Claims priority of application No. 102020104330.9 (DE), filed on Feb. 19, 2020.
Prior Publication US 2021/0252895 A1, Aug. 19, 2021
Int. Cl. B41M 7/00 (2006.01); B41M 5/00 (2006.01)
CPC B41M 7/0027 (2013.01) [B41M 5/0017 (2013.01); B41M 7/009 (2013.01); B41M 7/0036 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of producing a printed product, the method comprising:
i) providing a substrate;
ii) applying an interlayer composition to the substrate and drying the interlayer composition to obtain an interlayer on the substrate, wherein the interlayer has an acidic pH value;
iii) printing a printed image on the interlayer using at least one printing medium and drying the image to form a dried printed image;
iv) providing an at least partially dried barrier layer on the dried printed image by,
a) applying the barrier composition to a support, the support being a secondary cylinder of a printing press,
b) at least partially drying the barrier composition on the secondary cylinder of the printing press to obtain the at least partially dried barrier layer on the secondary cylinder of the printing press, and
c) transferring the at least partially dried barrier layer from the secondary cylinder of the printing press to a primary cylinder of the printing press, to thereby transfer the at least partially dried barrier layer to the dried printed image; and
v) applying varnish to the at least partially dried barrier layer and drying the varnish.