Method for minimizing the power consumption of a drying unit

By setting unit-specific drying parameters based on global printing parameters, the method optimizes drying unit settings to reduce power consumption by up to 50% in printing or coating machines, addressing inefficiencies in energy use and ensuring safety and quality.

EP4759542A1Pending Publication Date: 2026-06-17BOBST ITAL SPA
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Patent Information

Application Number
EP2025222268
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-13
Filing Date
2025-12-10
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

The power consumption of printing or coating machines is high due to limitations in drying unit capacity, which is influenced by factors such as printing speed, ventilation power, solvent type, ink or coating material type, substrate type, and thickness, leading to inefficiencies in energy use.

Method used

A method to determine the maximum printing speed of each unit and set unit-specific drying parameters, including fan speed, air recirculation rate, and temperature, based on global printing parameters using a predetermined formula or lookup table, to minimize power consumption while ensuring safety and quality.

Benefits of technology

Reduces power consumption by up to 50% in the drying units of printing or coating machines by optimizing drying unit settings, while maintaining print quality and safety, through precise control of fan speed, air recirculation rate, and temperature.

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Abstract

Disclosed is a method for controlling a drying unit, the drying unit having a controllable fan and an air recirculation circuit. Given the usual parameters of the related printing unit, including the ink characteristics in print coverage, the method sets the fan speed, the air recirculation rate, and the temperature accordingly and achieves a lower power consumption than by using a standard parameter set.
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Citation Information

Patent Citations

  • Gravure press and drying system thereof

    CN208232588U

  • Built-in dispersed heating type drying equipment

    CN101703994A

  • Solvent drying energy-saving emission-reducing drying system of large printing equipment

    CN112590383A

  • Drying equipment with false air treatment for printing machines

    EP2277701A1

  • Automatic exhaust air recirculation system for a printing machine of the flexographic or rotary type, or for a laminating machine

    EP3208565A1