^ Inert-gas chamber for UV
dryers in sheet-fed offset presses

Working principle

• UV-curing printing inks can be cured more effectively in an oxygen-reduced atmosphere
• Therefore the inert-gas chamber is mounted above the impression cylinder and flushed with nitrogen (inert-gas) this way expelling the atmospheric oxygen from the surface of the printing substrate passing by.
  

• Thanks to the more effective curing process the output of the UV radiator module mounted on the inert-gas chamber can drastically be reduced.
• At the same time the thermal load on the substrate and the press caused by the UV radiator is also reduced.
• Integrated sheet guiding rods in the SID inert-gas chamber facilitate the sheet guidance even if board or extremely thick plastic foils are printed.

Your advantages

• low heating of the substrate and the press
• essentially less energy consumption
• less ozone formation
• much less of the UV-typical odour nuisance
• inks with reduced photo initiator components can be used