Pulping
Raw material, made up of recovered paper and packaging, usually retrieved from waste sorting and commercial activity respectively, arrives at the mill either already baled by truck, or loose, and is deposited in stock piles. The recovered paper is taken on a conveyor belt to a pulper, and the roughest impurities are then removed using water. The resulting pulp is collected in a vat and undergoes a second staged screening phase (removal of foreign bodies), coarse and fine screening, refinement and new mixing according to the characteristics of the final product requested
Paper manufacture
Preceding dilution the pulp is sent to the headbox which feeds the PM. The pulp is distributed uniformly on the wire which is made up of a drainage foil which forms the paper. After initial dripping with natural drainage followed by forced drainage by suction boxes, the produced sheet undergoes initial drying by a vacuum cylinder before being passed through two felt-covered press rollers which increase the solid content to around 50%.
All water separated from the pulp is accumulated in a tank and reintroduced into the cycle after being cleaned and filtered.
Drying section
Paper leaving the drying cylinders is spooled into large rolls. Next a winding machine produces rolls with different sizes according to the customer’s request.
Winding
Paper leaving the drying cylinders is spooled into large rolls. Next a winding machine produces rolls with different sizes according to the customer’s request.
Technical diagram by Divisione Energia S.r.l. Società Benefit (Mira – VE)
