Advantages and Benefits

• NIR-Technology minimizes the heating of the substrate. It enables the drying of ink
  on thermo paper.
• NIR-Technology enables a temperature exact drying. The fluctuation of the drying
  temperature is   ±°C.
• NIR-Technology allows the use of booster solutions in order to extend the drying
  capacities of a printing machine.
• NIR-Technology reduces blistering of thick ink and varnish layers by a focused
  heating of volume.
• NIR- Technology enables drying and curing in limited space.

Challenges And Demands

• Space requirements for drying are limited.
• Heating of paper leads to high pile temperatures and thus to blocking of inks.
• Heating of paper leads to overheating of paper and thus to problems in converting.
• Sub-dimensioned dryers limit machinery speed.

Why use NIR Technology

NIR®-Technology (NIR: Near Infra Red) enables the application of very high energy amounts on  different substrates. 

NIR®-Technology minimizes the heating of paper

NIR®-Technology enables drying and curing at limited space.

adphos Solutions and Applications

Auxiliary drying is well-known for a long time for the drying of water based colors. Due to a focused heating of inks and varnishes, the water resp. solvent is expelled. In many cases, however, these dryers are the performance-defining element in those machines: thick varnish layers cannot be dried fast enough or water-based systems cannot replace solvent-based systems due for lack of dryer performance.
NIR-dryers have especially been conceived for applications with a demand of a high degree of dryness at minimized heating of the substrate such as paper or plastics. Due to the focused, extremely short-waved arrangement of the NIR-emitters (Working-Frequency between 0.8 – 1.5 µm) a maximum heating of the water based inks and varnishes is achieved and also made possible due to the high radiation density. The substrate in this area is widely transparent and takes up clearly less energy compared to conventional infrared systems. Thus, NIR–dryer require a minimum installation space and can be upgraded almost everywhere.