Multiple and single layers liquid crystal dispersion devices for common and direct glazing applications and methods thereof

A roll-to-roll method for manufacturing a liquid crystal dispersion in a polymer matrix film, comprising:

• placing a first support film (10) on a first roll;
• placing a release film (11) on a second roll disposed facing said first roll;
• pouring a first liquid crystal formulation (12) between said first support film and said release film;
• rolling said first roll and said second roll 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 comprises:
• placing said initial PDLC film on a third roll;
• detaching said release film from said initial PDLC film while said initial PDLC film is on said third roll;
• placing a second support film on a fourth roll disposed facing said third roll;
• pouring a second liquid crystal formulation (16) between said initial PDLC film and said second support film subsequent to said step of removing said release film from said initial PDLC film;
• rolling said third roll and said fourth roll 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.