Paper production from sugarcane fiber

16 de November de 2022

The production of paper from sugarcane has its advantages over the process from wood, being more environmentally friendly.

It all starts in the sugarcane field with the harvest during the sugarcane harvest period. The sugarcane is cut, cleaned, and turned into pieces in the milling machines. When it is crushed, the juice is separated from the bagasse. The juice is then used to produce sugar and the bagasse can be used to produce energy and paper.

The fiber is stored for biological treatment and suspended by water, which is derived for irrigation, and the fiber is taken to digesters where it is cooked in caustic soda and steamed to remove the lignum, which is the natural adhesive that binds the fibers together.

The fiber is now a brown pulp, which must pass through filter washers. In these filters, the pulp is separated from the black liquor, which is also reused once it has been converted into caustic soda.

Then the chemical bleaching process continues, and the pulp passes to the drainage in a rotating plastic mesh. The result is a continuous sheet of paper that is pressed and steam dried. The sheet is smoothed to the desired thickness by passing through a roller system.

From that paper, large rolls are formed, and the final step is the winder, which cuts them to the sizes required for the final products, whether packaged reels, reams, or continuous forms.

Source: Esto es Azúcar (This is Sugar)

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