The first process, the waste paper is pulperized with the wet process to remove plastics and other materials in the drum pulper. After the pulp is formed, the fiber is cleaned and purified again to remove any remaining heavy particles like stone, sand ad staples. At the next stage of the cleaning process the operation continues to purify the fiber and remove particles like woodchips and small pieces of plastics.
The pulp then goes on to the next stage in the screening with the process continues to purify the fiber and remove small particles using a finest screen. This eliminate smaller particles and materials like plastics. The materials is filtered twice more and the microscopic particles such as ink to very light and smooth are extracted the ink that's been released from the pulp floats away and its collected separatelly. Next the water content of the fiber is reduced. The pulp continues to kneeding process to reduce any remaining of the ink particles.
The next stage is oxydation. Oxydation allows form max result from the pulp its bleached with hydrogen peroxide (OH2O2). The pulp is squeezed for second time. Then return to kneeding machine one more time. To make sure the ink is removed, the pulp is floated once again. At this stage, the cleaning machine washes away tiny smooth particles like sands from the fibers. Then, the water content from the fibers is reduced again. At the end of the stage, the pulp is bleached again. This time by reduction process using formamidine sulphuric acid (FAS) before its heated. During the extracting process the fiber is washed to remove any microscopic particle, chemical, dirt, and ink may remain. Finally the clean fiber are placed in storage tank and now the pulp is ready to be used in paper making machine.