Printing method with transfer of a barrier layer for producing high gloss printed products

Patent metadata

Field	Value
Publication number	US-11850877-B2
Application number	US-202117176463-A
Country	US
Kind code	B2
Filing date	Feb 16, 2021
Priority date	Feb 19, 2020
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

A printed product is produced by providing a substrate, producing at least one interlayer on the substrate, printing a printed image onto the interlayer, and forming a barrier layer on the printed image. The barrier layer is provided on the printed image by applying a barrier composition to at least one carrier, at least partially drying the barrier layer and transferring it to the printed image. Preferred substrates have an acidic precoat layer as an interlayer. Such substrates can then be varnished with glossy varnishes, to achieve particularly high gloss values.

First claim

The invention claimed is:

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.

2. The method according to claim 1 , wherein the barrier composition is a liquid or pasty composition.

3. The method according to claim 1 , wherein the barrier composition comprises at least one water-based varnish.

4. The method according to claim 1 , wherein the at least one interlayer composition is selected from precoats for water-based inkjet inks.

5. The method according to claim 1 , wherein the at least one printing medium is selected from water-based inkjet inks.

6. The method according to claim 1 , wherein the support is a printing unit cylinder of a printing press.

Assignees

• Heidelberger Druckmasch Ag

Inventors

• Schmitt-Lewen Martin
• Gute Heike
• Euler Thorsten

Classifications

• B41M7/0027 Primary

  using protective coatings or layers by lamination or by fusion of the coatings or layers · CPC title

• B41M5/0017

  Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying · CPC title

• B41M7/009

  using thermal means, e.g. infrared radiation, heat · CPC title

• B41M7/0036 Primary

  using protective coatings or layers dried without curing · CPC title