	US 12,304,230 B2
	Process for preparing polymeric security articles
Michael Blesovsky, Burford (GB); Johannes Schaede, Würzburg (DE); and Robert Stewart, La Tour de Peilz (CH)
Assigned to Koenig & Bauer Banknote Solutions SA, Lausanne (CH)
Appl. No. 17/427,003
Filed by Koenig & Bauer Banknote Solutions SA, Lausanne (CH)
PCT Filed Jan. 30, 2019, PCT No. PCT/EP2019/052244 § 371(c)(1), (2) Date Jul. 29, 2021, PCT Pub. No. WO2020/156656, PCT Pub. Date Aug. 6, 2020.
Prior Publication US 2022/0118784 A1, Apr. 21, 2022
Int. Cl. B41M 3/12 (2006.01); B42D 25/29 (2014.01); B42D 25/328 (2014.01); B42D 25/351 (2014.01); B42D 25/36 (2014.01); B42D 25/415 (2014.01); B42D 25/475 (2014.01); C08J 7/04 (2020.01)

CPC B41M 3/12 (2013.01) [B42D 25/29 (2014.10); B42D 25/328 (2014.10); B42D 25/351 (2014.10); B42D 25/36 (2014.10); B42D 25/415 (2014.10); B42D 25/475 (2014.10); C08J 7/0423 (2020.01); C08J 2301/02 (2013.01); C08J 2427/08 (2013.01)]

20 Claims

1. A method of manufacturing a security article, said method comprising the steps of:

a. introducing into an offset printing device a transparent film comprising a non-fibrous substrate layer of regenerated cellulose;

b. disposing an opacification layer on at least a portion of at least one surface of said film by a first offset printing step; and

c. disposing printed information on at least a portion of said opacification layer by a second offset printing step.