US 11,745,468 B2
Protection film
Larry S. Hebert, Hudson, WI (US); and Scott A. Boyd, White Bear Lake, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 16/323,486
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Sep. 25, 2017, PCT No. PCT/US2017/053202
§ 371(c)(1), (2) Date Feb. 5, 2019,
PCT Pub. No. WO2018/063970, PCT Pub. Date Apr. 5, 2018.
Claims priority of provisional application 62/400,329, filed on Sep. 27, 2016.
Prior Publication US 2021/0283883 A1, Sep. 16, 2021
Int. Cl. B32B 15/14 (2006.01); B32B 5/26 (2006.01); B32B 5/02 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); C08K 3/08 (2006.01); C08K 3/04 (2006.01)
CPC B32B 15/14 (2013.01) [B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 5/18 (2013.01); B32B 5/245 (2013.01); B32B 5/275 (2021.05); C08K 3/08 (2013.01); B32B 2250/40 (2013.01); B32B 2260/023 (2013.01); B32B 2260/046 (2013.01); B32B 2262/0261 (2013.01); B32B 2262/0276 (2013.01); B32B 2262/101 (2013.01); B32B 2262/106 (2013.01); B32B 2266/045 (2013.01); B32B 2307/202 (2013.01); B32B 2605/18 (2013.01); C08K 3/04 (2013.01); C08K 2003/085 (2013.01); C08K 2003/0862 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A protection film comprising a plurality of layers, in the following order:
a first carrier layer comprising a plurality of metallized electrically conductive fibers and having an exposed major surface, the metallized electrically conductive fibers comprised of metallized fiberglass or metallized carbon fibers;
a metal layer directly contacting the first carrier layer and comprising a foraminous foil having a thickness of from 10 micrometers to 45 micrometers; and
a second carrier layer directly contacting the metal layer and having an exposed major surface, the second carrier layer comprising a plurality of metallized electrically conductive fibers comprised of metallized fiberglass or metallized carbon fibers, wherein each of the first and second carrier layers and the metal layer has a void volume at least partially filled with a hardenable composition,
whereby the protection film displays electrical conductivity along the z-axis direction.