US 11,701,871 B2
Easy-to-clean protective film and substrate assembly
Pei Huang, Shanghai (CN); and Xue-hua Chen, Shanghai (CN)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Appl. No. 16/961,320
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Jan. 10, 2019, PCT No. PCT/IB2019/050200
§ 371(c)(1), (2) Date Jul. 10, 2020,
PCT Pub. No. WO2019/138357, PCT Pub. Date Jul. 18, 2019.
Claims priority of application No. 201820041055.0 (CN), filed on Jan. 10, 2018.
Prior Publication US 2021/0078312 A1, Mar. 18, 2021
Int. Cl. B32B 27/14 (2006.01); B32B 5/16 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/40 (2006.01); C09J 7/38 (2018.01); C09J 7/40 (2018.01); C09J 7/24 (2018.01); B32B 7/06 (2019.01); C09J 7/29 (2018.01)
CPC B32B 27/14 (2013.01) [B32B 5/16 (2013.01); B32B 7/06 (2013.01); B32B 27/08 (2013.01); B32B 27/304 (2013.01); B32B 27/40 (2013.01); C09J 7/245 (2018.01); B32B 2255/20 (2013.01); B32B 2307/732 (2013.01); B32B 2307/748 (2013.01); B32B 2405/00 (2013.01); B32B 2605/00 (2013.01); C09J 7/29 (2018.01); C09J 7/38 (2018.01); C09J 7/40 (2018.01); C09J 2301/122 (2020.08); C09J 2301/302 (2020.08); Y10T 428/1471 (2015.01)] 12 Claims
OG exemplary drawing
 
1. An easy-to-clean protective film, wherein the easy-to-clean protective film comprises a polyvinyl chloride bottom film and a separate easy-to-clean layer consisting of silicon dioxide particles on a side of the polyvinyl chloride bottom film, wherein an initial water contact angle of the easy-to-clean layer is less than or equal to 39 degrees.