The following is a description of the main characteristics of the slot coater:
1. Coating principle
Slot coating uses a precisely designed "slot die" to extrude the coating evenly and directly coat it on the surface of the substrate. The coating supply is controlled by pressure (such as a pump), and a thin film is coated through the slit gap.
2. Main characteristics
Characteristics \ Description
High-precision thickness control \ By adjusting parameters such as slit opening, coating speed, and feed pressure, the coating thickness can be accurately controlled (usually from a few microns to hundreds of nanometers).
High stability \ Adopt a closed system to reduce the interference of the external environment (such as air and moisture) on the coating quality.
Low material waste \ High coating efficiency and low loss, especially suitable for expensive materials (such as OLED luminescent materials, functional nanomaterials).
Continuous coating \ Supports continuous production, improving production capacity and consistency.
Applicable to a variety of substrates \ Can be used for a variety of substrates such as plastic film, metal foil, glass, etc.
High repeatability and consistency \ Suitable for large-area and multi-batch manufacturing, with stable quality and small differences.
Closed system design \ Reduces the probability of contamination, and can also integrate vacuum environment or inert gas protection.