Production Process And Value-added Functions Of Polarizers
Jan 22, 2022
The full name of polarizer should be polarizer. Those who have studied physics should know what polarized light is. The imaging of liquid crystal displays must rely on polarized light. About 1mm liquid crystal sheet. If any polarizer is missing, the liquid crystal cannot display images.
The production process of polarizer includes: dyeing, extending, laminating and drying. Among them, the formula of dyeing materials is an important technical key. In addition, the extension orientation control of PVA will also affect the optical properties of the polarizing film. After the polymer film is stretched, the mechanical properties are usually reduced and become easily broken; and the PVA film is hydrophilic, and will deform, shrink and decline quickly in a humid and hot environment, so after the polarizing matrix PVA is stretched. , To paste the transparent substrate composed of triacetate fiber (TAC) on both sides, on the one hand, it can be protected, on the other hand, it can prevent the retraction of the film. The production of TAC is to use triacetate cellulose resin (referred to as cellulose) and plasticizer to make cotton glue solution in a mixed solvent of methylene chloride, flow through a casting machine to make a film, and then dry, peel and roll it. .
