Slit-nozzle Coater for High Viscosity Liquids

Features

Toray Engineering’s high-viscosity liquid coater has specially been developed by bringing together its own elemental technology: slit-nozzle, high-precision pump, high-precision stage, and reduced-pressure heating drier. This coater is suitable for coating high-viscosity pasty-functional-material such as polyimide varnish for flexible display as well as solvent-less high-viscosity material such as adhesion and ultraviolet curing resin.

Hot-heated slit-nozzle enables high-speed coating of high-viscosity material, thus enhancing productivity.

Toray Engineering can accept an inquiry of sample-making by preparing reduced-pressure heating drier for high-boiling polyimide and hot oven for imidization of imide precursor.

Technological profiles

An example of high precision slit-nozzle based on fluid analyses.

Result of flow speed distribution analysis in Nozzle
Result of flow speed distribution analysis in Nozzle

Result of pressure distribution analysis in Nozzle
Result of pressure distribution analysis in Nozzle

An image of a high viscosity slit-nozzle(370mm Coating Test Equipment)

An image of a high viscosity slit-nozzle(370mm Coating Test Equipment)

Coating example Polyimide (3,000cP)

Coating example Polyimide (3,000cP)

Applications

CF, Touch panel, OLED

System specifications

Glass size G1 (300mm × 400mm) ~G6 (1,500mm × 1,800mm) 
Viscocity of coating liquid 1,000 to 20,000 cP
Coating thickness 1 to 1,000 µm *Consultation required
Uniformity ±3%
Coating environment Atmosphere or N2
Kind of substrate Glass or Film

High viscosity Slit-nozzle Coater (G1)

High viscosity Slit-nozzle Coater (G1)

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