US 12,291,009 B2
Multiple and single layers liquid crystal dispersion devices for common and direct glazing applications and methods thereof
Hassan-Ali Hakemi, Macherio (IT); Adrian Lofer, Kfar Saba (IL); Eyal Peso, Bat Yam (IL); and Dana Gal-Fuss, Tel Aviv (IL)
Assigned to GAUZY LTD., Tel-Aviv (IL)
Filed by GAUZY LTD, Tel-Aviv (IL)
Filed on May 24, 2021, as Appl. No. 17/328,208.
Application 17/328,208 is a division of application No. 15/740,587, abandoned, previously published as PCT/IL2016/050703, filed on Jun. 30, 2016.
Claims priority of provisional application 62/186,409, filed on Jun. 30, 2015.
Prior Publication US 2021/0276313 A1, Sep. 9, 2021
Int. Cl. B32B 27/08 (2006.01); B32B 7/06 (2019.01); B32B 17/10 (2006.01); B32B 27/36 (2006.01); B32B 37/15 (2006.01); B32B 37/20 (2006.01); B32B 37/26 (2006.01); B32B 38/00 (2006.01); B32B 38/10 (2006.01); C09K 19/54 (2006.01)
CPC B32B 27/08 (2013.01) [B32B 7/06 (2013.01); B32B 17/10 (2013.01); B32B 17/10899 (2013.01); B32B 27/36 (2013.01); B32B 37/15 (2013.01); B32B 37/203 (2013.01); B32B 37/206 (2013.01); B32B 38/0008 (2013.01); B32B 38/0036 (2013.01); B32B 38/10 (2013.01); C09K 19/544 (2013.01); B32B 2037/268 (2013.01); B32B 2038/0076 (2013.01); B32B 2255/10 (2013.01); B32B 2255/205 (2013.01); B32B 2255/26 (2013.01); B32B 2305/55 (2013.01); B32B 2305/72 (2013.01); B32B 2307/412 (2013.01); B32B 2307/748 (2013.01); B32B 2310/0831 (2013.01); B32B 2310/0887 (2013.01); B32B 2367/00 (2013.01); B32B 2457/00 (2013.01); B32B 2457/202 (2013.01); B32B 2605/006 (2013.01); C09K 2019/546 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for manufacturing a liquid crystal dispersion in a polymer matrix film, comprising:
placing a first support film (10) on a first roller;
placing a release film (11) on a second roller disposed facing said first roller;
pouring a first liquid crystal formulation (12) between said first support film and said release film while said first support film is on said first roller and said release film is on said second roller;
rolling said first roller and said second roller so as to entrain said first liquid crystal formulation between said first support film and said release film;
curing said first liquid crystal formulation, thereby obtaining an initial PDLC film (14);
wherein said method is a continuous roll-to-roll method and further comprises:
placing said initial PDLC film on a third roller;
detaching said release film from said initial PDLC film while said initial PDLC film is on said third roller;
placing a second support film on a fourth roller disposed facing said third roller;
subsequent to said step of removing said release film from said initial PDLC film, pouring a second liquid crystal formulation (16) between said initial PDLC film and said second support film while said initial PDLC film is on said third roller and said second support film is on said fourth roller;
rolling said third roller and said fourth roller so as to entrain said second liquid crystal formulation between said initial PDLC film and said second support film; and,
curing said second liquid crystal formulation, thereby obtaining a PDLC film comprising two liquid crystal layers disposed between said two support films.