US 12,152,344 B2
Multi-metal layer WVTR barrier products on water vapour and oxygen permeable bio-based substrates
Valeria Rasetto, Vigone (IT); Daniela Mondelli, Turin (IT); Roghaiyeh Ebrahimi Kalan, Bellingham, MA (US); and Kurt Gundlach, Warren, MA (US)
Assigned to AR METALLIZING N.V., Genk (BE)
Appl. No. 17/631,569
Filed by AR METALLIZING N.V., Genk (BE)
PCT Filed Jul. 31, 2020, PCT No. PCT/EP2020/071671
§ 371(c)(1), (2) Date Jan. 31, 2022,
PCT Pub. No. WO2021/023661, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 19189748 (EP), filed on Aug. 2, 2019.
Prior Publication US 2022/0275582 A1, Sep. 1, 2022
Int. Cl. D21H 19/08 (2006.01); B05D 7/00 (2006.01); B05D 7/02 (2006.01); B05D 7/14 (2006.01); B05D 7/26 (2006.01); B32B 15/04 (2006.01); B32B 15/08 (2006.01); B32B 15/09 (2006.01); B32B 15/10 (2006.01); B32B 15/12 (2006.01); B32B 15/14 (2006.01); C23C 14/02 (2006.01); C23C 14/14 (2006.01); C23C 14/20 (2006.01); C23C 14/24 (2006.01); C23C 28/00 (2006.01); C23C 30/00 (2006.01); D21H 19/02 (2006.01); D21H 19/82 (2006.01); D21H 27/30 (2006.01); D21H 27/10 (2006.01)
CPC D21H 19/08 (2013.01) [B05D 7/00 (2013.01); B05D 7/02 (2013.01); B05D 7/14 (2013.01); B05D 7/26 (2013.01); B05D 7/50 (2013.01); B05D 7/52 (2013.01); B05D 7/56 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/08 (2013.01); B32B 15/09 (2013.01); B32B 15/10 (2013.01); B32B 15/12 (2013.01); B32B 15/14 (2013.01); C23C 14/02 (2013.01); C23C 14/024 (2013.01); C23C 14/025 (2013.01); C23C 14/14 (2013.01); C23C 14/20 (2013.01); C23C 14/24 (2013.01); C23C 28/00 (2013.01); C23C 28/42 (2013.01); C23C 28/44 (2013.01); C23C 30/00 (2013.01); D21H 19/02 (2013.01); D21H 19/82 (2013.01); D21H 27/30 (2013.01); B05D 2202/00 (2013.01); B05D 2203/22 (2013.01); B05D 2350/65 (2013.01); D21H 19/824 (2013.01); D21H 27/10 (2013.01); Y10T 428/12438 (2015.01); Y10T 428/12556 (2015.01); Y10T 428/12569 (2015.01); Y10T 428/12993 (2015.01); Y10T 428/24942 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/26 (2015.01); Y10T 428/263 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01); Y10T 428/268 (2015.01)] 13 Claims
OG exemplary drawing
 
1. A metallized multilayer sheet material for packaging having a water vapour transmission rate (WVTR) of below 5 g/m2/day at 38° C. RH:90%, the metallized multilayer sheet material comprising:
a water vapour permeable sheet substrate having a water vapour transmission rate of over 100 g/m2/day at 38° C. RH:90%; and
at least two metallized layers including a first metallized layer and a second metallized layer, each of the at least two metalized layers being covered directly by a solvent based polymeric coating layer;
wherein the at least two metallized layers, together as cumulated metallized layers, have an optical density (OD) of at least 2.5 and a thickness of at least 15 nm.