Deinking

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removing ink and other finishing materials, like coatings, sizing, and adhesives from printed paper.

The complex deinking process is what makes recycling paper difficult and ultimately adds to the cost of a recycled sheet of paper. To produce high-quality recycled or recycled content papres for printing and writing, the deinking process needs to be thorough.

The goal is to end up with reusable fiber that has few impurities, since impurities lower the quality of a reycyled sheet and can some- times damage equipment in the papermaking and printing process. Modern offset and flexographic ink, photocopier and laser printing “ink,” ultraviolet and thermography coatings, and adhesives make it increasingly difficult to deink paper. deinking process see also bleaching, flotation, pulping wood, recycled paper.