Flexo Printing
Flexo printing is a widely-used printing technique in the packaging industry. It utilizes relief elements on a flexible printing plate or cylinder to transfer the ink to the substrate. It is essentially a modern letterpress.
![https://www.empa.ch/documents/147354/601833/Flexo1.png/1e31b0ec-6cfc-4251-9881-c1dd51b394c8?t=1585730103000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56975](https://www.empa.ch/documents/147354/601833/Flexo1.png/1e31b0ec-6cfc-4251-9881-c1dd51b394c8?t=1585730103000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56975)
Schematic of the Flexo printing process and printing unit of the C600
Key features
- Relief elements on a flexible printing plate can print on nearly any type of substrate
- High variety of low viscosity inks can be used (UV, solvent, waterbased etc.)
- Anilox roller made of chrome/ceramic
- Web speed ≤ 80 m/min
- Mass-printing technique
- Resolution ≥ 150 dpi, ≤ 20μm
- Film thickness 0.1 – 3 μm
![https://www.empa.ch/documents/147354/601833/Flexo+Printed+Examples.png/2ef80897-ae37-4006-95dd-e3f063f26df2?t=1585730501000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56975](https://www.empa.ch/documents/147354/601833/Flexo+Printed+Examples.png/2ef80897-ae37-4006-95dd-e3f063f26df2?t=1585730501000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56975)
Flexographic printed silver electrodes and test structures. 3-D image to determine layer-thickness (~100 nm for the printed Ag structures)
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