US 12,246,551 B2
Digital printing-structured antiwear film having adjustable gloss level
Hans-Jürgen Hannig, Bergisch Gladbach (DE)
Assigned to Akzenta Paneele + Profile GMBH, Kaisersesch (DE)
Appl. No. 17/773,901
Filed by AKZENTA PANEELE + PROFILE GMBH, Kaisersesch (DE)
PCT Filed Dec. 11, 2020, PCT No. PCT/EP2020/085834
§ 371(c)(1), (2) Date May 3, 2022,
PCT Pub. No. WO2021/116447, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 19215652 (EP), filed on Dec. 12, 2019.
Prior Publication US 2022/0379649 A1, Dec. 1, 2022
Int. Cl. B41M 7/00 (2006.01); B05D 3/06 (2006.01); B05D 5/12 (2006.01); B41M 5/00 (2006.01)
CPC B41M 7/0027 (2013.01) [B05D 3/067 (2013.01); B05D 5/12 (2013.01); B41M 5/0047 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of producing a structured antiwear film, comprising:
a. providing a base antiwear film;
b. applying a formable lacquer-containing top layer onto at least a partial area of the base antiwear film;
c. at least partial structuring of the lacquer-containing top layer by use of a digital printing process in order to produce a structuring of the lacquer-containing top layer; wherein the at least partial structuring of the lacquer-containing top layer is carried out by use of a digital printing process by spraying on a displacement ink by use of an ink-jet process and
d. curing the lacquer-containing top layer in two separate curing steps in such a way that the lacquer-containing top layer is first partially cured, wherein UV radiation having a wavelength in a range from ≥150 nm to ≤250 nm at a lamp power in a range of 10-25 W/cm is used for the partial curing, and wherein the lacquer-containing top layer is subsequently finally cured by using UV radiation having a wavelength in a range from >150 nm to ≤450 nm at a lamp power in a range of 5 to 200 W/cm, and wherein the wavelength of the UV radiation used for final curing is longer than the wavelength of the UV radiation used for the partial curing, and wherein the lamp power used in the final curing step is higher than the lamp power used in the partial curing step, and wherein
e. the lacquer-containing top layer is treated before being fed to the printing unit for partial structuring of the lacquer-containing top layer and/or during the printing process for partial structuring of the lacquer-containing top layer in the printing unit by means for changing the electrostatic charge of the top layer by electrostatically discharging the top layer.