US 12,006,454 B2
Paper article comprising a paper component and a heat-sealable coating
Jan Philipp Weihs, Dudingen (CH); and Fabien Wilhelm Monnard, Aarburg (CH)
Assigned to OMYA INTERNATIONAL AG, Oftringen (CH)
Appl. No. 17/755,788
Filed by OMYA INTERNATIONAL AG, Oftringen (CH)
PCT Filed Nov. 25, 2020, PCT No. PCT/EP2020/083396
§ 371(c)(1), (2) Date May 7, 2022,
PCT Pub. No. WO2021/105231, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 19211657 (EP), filed on Nov. 26, 2019.
Prior Publication US 2022/0380633 A1, Dec. 1, 2022
Int. Cl. C09J 7/35 (2018.01); B32B 21/06 (2006.01); B32B 27/10 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 29/00 (2006.01); C09J 5/06 (2006.01); C09J 7/21 (2018.01); C09J 11/04 (2006.01); D21H 27/36 (2006.01)
CPC C09J 7/35 (2018.01) [B32B 21/06 (2013.01); B32B 27/10 (2013.01); B32B 27/302 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B32B 29/005 (2013.01); C09J 5/06 (2013.01); C09J 7/21 (2018.01); C09J 11/04 (2013.01); D21H 27/36 (2013.01); B32B 2250/26 (2013.01); B32B 2255/12 (2013.01); B32B 2255/20 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2270/00 (2013.01); C09J 2301/304 (2020.08); C09J 2301/414 (2020.08); C09J 2400/283 (2013.01); C09J 2400/286 (2013.01); C09J 2400/306 (2013.01); C09J 2423/04 (2013.01); C09J 2433/00 (2013.01)] 22 Claims
 
1. A paper article comprising
a paper component having a first side and a second side,
wherein the first side and/or the second side of the paper component is at least partially coated with a heat-sealable coating, wherein the heat-sealable coating comprises
a first polymer consisting of units derived from a (meth)acrylate, and/or (meth)acrylic acid and/or a salt thereof, and
a second polymer, being different from the first polymer, comprising units derived from
a) a (meth)acrylate, and/or (meth)acrylic acid and/or a salt thereof, and
b) an alkene,
wherein the first polymer and the second polymer are present in the heat-sealable coating in a weight ratio of 90:10 to 35:65, and
wherein the first polymer and the second polymer are present in the heat-sealable coating in an overall amount of at least 50 wt. %, based on the total weight of the coating.