Cardboard and paper materials are placed into the tunnel dryer, where a decelerating motor automatically adjusts the running speed of the drying materials. Hot air is transported through the conveying pipeline to the drying line, evenly distributed by the hot air distribution pipeline and the circulating fan to the drying materials, ensuring thorough contact with the heat for effective heat exchange. After the heat exchange, part of the moist air is expelled through the moisture-removal system, and part of the hot air is recycled through the recovery pipeline. The length of the drying line and the heat source method can be customized to fit the actual production capacity and site conditions for a suitable paper product drying machine.

The heat source can be hot air, thermal oil, or electric heating. This product has a short drying time, low operating costs, even drying, and excellent results, making it an ideal drying equipment for paper product manufacturers.