The air knife made to 3000mm is a bit super long.
To ensure the drying effect, the air inlet can be make at the middle and the both ends. That would be get more uniform wind speed and pressure at the air outlet.
Or can use two or more shorter air knives in combination, to replace an extra long air knife, also will get the better drying effect.
Working on a blow-off, drying or cooling problem?
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