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Printing under control? Find out how to effectively control humidity

How is the moisture content of paper controlled? The physical characteristics of paper vary based on moisture content, measured in grams of water per kilogram of dry material (g/kg). This is influenced by the relative humidity (%RH) in the storage environment, with characteristics tested according to ISO-187-2022 standards.

Quality issues often arise from improper humidity management during storage. Paper leaves the mill with a certified moisture content of 4-6% and is shipped in sealed reams or rolls. However, within a few days, the paper reaches equilibrium with the storage environment, which is typically not air-conditioned. In winter, cold, dry air can cause the paper to dehydrate, leading to significant losses.

To prevent these issues, it's crucial to acclimatise the paper in a controlled environment. 

Learn more about it in the blog post written by Luca Brotto, Application Manager – HVAC Industrial:

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