What Happens after the Material Leaves Bluewater?
The process of making recycled boxboard depends on the initial raw material and the final product requirements. As many contaminants as possible must be removed and then those that are still left are dispersed. The first step in manufacturing recycled boxboard is placing bales of waste paper in a hydrapulper. This makes the board into a slurry form, breaking down individual fibres. The fibres go through a centrifugal cleaner where nuts, bolts and other heavy objects that might cause damage are removed. Then the slurry is run across a pressure or vibrating screen where Styrofoam and plastic bags and other larger contaminants are size separated. The last screen has 1/10,000 inch slots which remove stickies and other latex contaminants. After being pulped and cleaned, the slurry moves to a cylinder machine. The forming cylinders of a cylinder machine are covered with a wire so that, as they turn within a vat filled with stock solution, fibres are picked up to form a web on the surface wit
