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How to make corrugated paper?
The manufacturing of corrugated board includes two key steps: manufacturing kraft paper and corrugated board. Kraft paper includes pulped wood chips, and then the obtained paper material is fed through a large number of steam rollers to remove moisture.

Corrugating is also carried out in machines using heavy rollers. A roll of cardboard is corrugated and then stuck between the other two layers (pads) with the same machine. Then the cardboard is passed through a heated roller to cure the glue. A roll of medium is loaded through the corrugating roller, and a roll of liner is fed into the corrugating machine to engage with the corrugated medium. The liner from another roll moves upward on the corrugated roll along a plane structure called a bridge. In this process, the liner will be bonded to the corrugated medium paper. For mass production, extra rolls are loaded into the automatic splicer. A sensitive detector checks the paper roll fed into the corrugating machine. When the drum is almost empty, the corrugator control system starts the splicer to connect the paper from the new drum to the end of the paper passing through the machine. Therefore, the production of corrugated board is continuous, and there is no loss of production speed. 9 Send the corrugated base paper into the giant electric drive roller of the corrugating machine, first through the preheating roller, and then into the corrugated roller. Steam with a pressure of 175 to 180 pounds per square inch (psi) is forced through two sets of rollers, and when the paper passes through them, the temperature reaches 350 to 365 degrees Fahrenheit (177 to 185 degrees Celsius).

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