US 12,325,213 B2
Method for producing a multi-layer substrate
Roland Bochnia, Hilden (DE); Stefan Strenger, Heiligenhaus (DE); Rainer Bongers, Frankfurt (DE); and Mario Eckers, Wegberg (DE)
Assigned to HENKEL AG & CO. KGaA, Duesseldorf (DE)
Filed by HENKEL AG & CO. KGaA, Duesseldorf (DE)
Filed on Oct. 26, 2023, as Appl. No. 18/494,859.
Application 18/494,859 is a continuation of application No. 16/988,812, filed on Aug. 10, 2020, granted, now 11,833,788.
Application 16/988,812 is a continuation of application No. PCT/EP2019/053056, filed on Feb. 7, 2019.
Claims priority of application No. 18157071 (EP), filed on Feb. 16, 2018.
Prior Publication US 2024/0109277 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/08 (2006.01); B32B 3/06 (2006.01); B32B 3/18 (2006.01); B32B 5/16 (2006.01); B32B 7/05 (2019.01); B32B 7/12 (2006.01); B32B 27/10 (2006.01); B32B 27/30 (2006.01); B32B 29/00 (2006.01); B32B 29/04 (2006.01); B32B 37/00 (2006.01); B32B 37/12 (2006.01); B32B 37/14 (2006.01); B32B 37/24 (2006.01); B65D 81/03 (2006.01)
CPC B32B 27/08 (2013.01) [B32B 3/06 (2013.01); B32B 3/18 (2013.01); B32B 5/16 (2013.01); B32B 7/05 (2019.01); B32B 7/12 (2013.01); B32B 27/10 (2013.01); B32B 27/306 (2013.01); B32B 29/04 (2013.01); B32B 37/00 (2013.01); B32B 37/12 (2013.01); B32B 37/1292 (2013.01); B32B 37/142 (2013.01); B65D 81/03 (2013.01); B32B 29/005 (2013.01); B32B 2037/243 (2013.01); B32B 2255/10 (2013.01); B32B 2255/12 (2013.01); B32B 2255/26 (2013.01); B32B 2264/303 (2020.08); B32B 2305/30 (2013.01); B32B 2307/56 (2013.01); B32B 2310/0454 (2013.01); B32B 2310/0825 (2013.01); B32B 2323/04 (2013.01); B32B 2331/04 (2013.01); B32B 2439/06 (2013.01); B32B 2439/46 (2013.01); B32B 2439/62 (2013.01); B32B 2553/02 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A multi-layer substrate produced comprising the following steps:
a) providing a first material having a first surface with at least one edge region and at least one inner region enclosed by the edge region;
b) applying a coating material to partial portions of the inner region of the first surface, the coating material comprising expandable microparticles;
c) drying the coating material; and
d) contacting the first surface of the first material with a surface of a second material to form the multi-layer substrate such that the coating material is between the first material and the second material,
wherein the inner region does not contain an adhesive
wherein the coating material consists of:
(i) 30 to 70 wt-% of VAE copolymer dispersion;
(ii) 5 to 15 wt. % of paraffin dispersion;
(iii) 15 to 30 wt. % of microparticles;
(iv) 5 to 10 wt. % of glycerol; and
(v) optionally, hydroxyethylcellulose,
wherein the total weight of the coating material and add up to 100 wt. %.