Small-Diameter Gravure Coater

The small-diameter gravure coater is used for thin film coating. The method here involves, with a small-diameter gravure roll, a doctor blade, a liquid pan, and a pump, rotating the gravure roll in the opposite direction from the flowing direction of the base material to create a pool of liquid between the base material and the gravure roll to be used for coating.

Features

  1. Ultra-thin film coating with a wet thickness of 1 μm.
  2. The film thickness of a single gravure roll can be slightly adjusted by changing the peripheral speed of the gravure roll.
  3. Without any backup roll, no liquid is on the backside.
  4. Coatings with a thickness of 1 to 50 µm.

  • Roll Layout

  • Demonstration Machine

Roll Volume (Type of Engraving)

Oblique

This can be used when the coating liquid is highly viscous and more transferring is required. A doctor blade can be used together.

Cells/Inch Depth（μ） Cell volume in cm3/m2
35 250 125
42 190 78
53 152 68
60 180 88
70 97 46
80 130 63
83 87 42
90 90 43
100 77 37
115 70 34
120 80 38
130 68 32
150 44 20
165 40 19
180 48 22
200 30 15
230 20 9

Roll Volume Accuracy

Volume accuracy of 3% or less is achieved.