What is an aqueous coating solution for optical polyester film?
Jun 25, 2023
On the PET polyester film, use a kind of aqueous coating liquid that optical polyester film is used, the polyester resin that contains 1.5%wt in this aqueous coating liquid, the melamine resin of 1.0%wt, the acrylic resin of 5.0%wt and A small amount of surfactant.
After coating, the obtained polyester film has high transparency, low haze, excellent adhesion and slipperiness, and is suitable for substrates for optical applications such as diffusion films and brightness enhancement films.
Coating a coating solution containing acrylic adhesive, silicon-containing wetting agent, colloidal silica, and melamine hardener on the PET polyester film, the resulting PET film has excellent adhesive strength between the post-processing layer , more suitable for optical film use.
According to Coating Online, there are many factors that affect the interface bonding strength, such as interface residual stress, coating thickness, curing temperature, curing time and post-curing.
