US 12,246,519 B2
Multilayer coating for covering vehicle body parts
Hugues Vandeparre, Thoricourt (BE); Regis Barbieux, Braine-le-Comte (BE); and Jean-Christophe Minor, Bassilly (BE)
Assigned to Avery Dennison Corporation, Mentor, OH (US)
Filed by Avery Dennison Corporation, Mentor, OH (US)
Filed on Feb. 13, 2023, as Appl. No. 18/167,963.
Application 18/167,963 is a division of application No. 17/043,822, abandoned, previously published as PCT/US2019/024596, filed on Mar. 28, 2019.
Claims priority of application No. 18165300 (EP), filed on Mar. 30, 2018.
Prior Publication US 2023/0191758 A1, Jun. 22, 2023
Int. Cl. B32B 27/08 (2006.01); B29C 71/02 (2006.01); B32B 7/12 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01); C08J 7/04 (2020.01); C08J 7/043 (2020.01); C08J 7/046 (2020.01); C08J 7/18 (2006.01); C09J 7/29 (2018.01)
CPC B32B 27/08 (2013.01) [B32B 7/12 (2013.01); B32B 27/304 (2013.01); B32B 27/365 (2013.01); C08J 7/042 (2013.01); C08J 7/043 (2020.01); C08J 7/046 (2020.01); C08J 7/08 (2013.01); C08J 7/18 (2013.01); C09J 7/29 (2018.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/04 (2013.01); B32B 2250/05 (2013.01); B32B 2305/72 (2013.01); B32B 2307/412 (2013.01); B32B 2307/584 (2013.01); B32B 2310/0831 (2013.01); C08J 2375/06 (2013.01); C09J 2203/306 (2013.01); C09J 2301/122 (2020.08); C09J 2301/162 (2020.08); C09J 2475/006 (2013.01)] 13 Claims
 
1. A method for manufacturing a multilayer coating for covering vehicle body parts, essentially comprising the steps of:
(a) providing a polymeric facestock layer;
(b) providing a polymeric adhesive layer;
(c) providing a polymeric top coat layer; and
(d) sandwiching the polymeric facestock layer between the polymeric top coat layer and the polymeric adhesive layer,
wherein the step (c) of providing the polymeric top coat layer comprises the following steps:
(c-i) adding thermally curable polyurethane precursor material to solvent or water to obtain a first dispersion or solution;
(c-ii) adding UV-curable polyurethane precursor material to the first dispersion or solution obtained in step (c-i) to obtain a second dispersion or solution;
(c-iii) coating the second dispersion or solution obtained in step (c-ii) on the polymeric facestock layer;
(c-iv) heating the second dispersion or solution coated on the polymeric facestock layer in step (c-iii in such a way that water and/or solvent is evaporated and the thermally curable polyurethane precursor described in step (c-i) is at least partially cross-linked; and
(c-v) submitting the second dispersion or solution resulting from step (c-iv) to UV radiation in such a way that the UV-curable polyurethane precursor described in step (c-ii) is at least partially cross-linked to obtain the multilayer coating.