US 12,226,983 B2
Multilayer systems and methods of making multilayer systems
Cynthia Kutchko, Pittsburgh, PA (US); Michael A. Bubas, Pittsburgh, PA (US); Bryan W. Wilkinson, Pittsburgh, PA (US); Eric S. Epstein, Pittsburgh, PA (US); Weibin Cui, Rancho Palos Verdes, CA (US); and Renhe Lin, Stevenson Ranch, CA (US)
Assigned to PPG Industries Ohio, Inc., Cleveland, OH (US)
Appl. No. 17/430,057
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
PCT Filed Feb. 10, 2020, PCT No. PCT/US2020/017428
§ 371(c)(1), (2) Date Aug. 11, 2021,
PCT Pub. No. WO2020/167626, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/803,727, filed on Feb. 11, 2019.
Prior Publication US 2022/0134723 A1, May 5, 2022
Int. Cl. B32B 37/15 (2006.01); B29C 48/21 (2019.01); B32B 27/28 (2006.01); B32B 27/38 (2006.01); B29K 101/10 (2006.01); B29K 105/00 (2006.01); B29K 105/16 (2006.01); B29L 9/00 (2006.01); B29L 31/30 (2006.01)
CPC B32B 27/286 (2013.01) [B29C 48/21 (2019.02); B32B 27/285 (2013.01); B32B 27/38 (2013.01); B32B 37/153 (2013.01); B29K 2101/10 (2013.01); B29K 2105/0088 (2013.01); B29K 2105/0097 (2013.01); B29K 2105/16 (2013.01); B29L 2009/00 (2013.01); B29L 2031/30 (2013.01); B32B 2250/24 (2013.01); B32B 2307/3065 (2013.01); B32B 2307/536 (2013.01); B32B 2307/732 (2013.01); B32B 2605/08 (2013.01); B32B 2605/18 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of making a multilayer system comprising two or more layers, wherein one or more of the layers comprises a sealant layer, comprising:
(a) mixing a first component and a second component to form a first coreactive sealant composition, wherein,
the coreactive sealant composition comprises a first reactive compound and a second reactive compound; and
the first reactive compound is reactive with the second reactive compound;
(b) extruding the first coreactive sealant composition to form an extrudate;
(c) depositing the extrudate to form the sealant layer, and
(d) depositing a second coreactive composition underlying the deposited sealant layer to form an underlying layer; and/or
depositing a third coreactive composition overlying the sealant layer to form an overlying layer, wherein the second coreactive composition and the third coreactive composition comprise a different composition than the sealant layer,
wherein depositing comprises three-dimensional printing co-extruding.