Macro stickies

Tacky materials present in recycled pulp slurries with a particle size of more than 100 or 150 μm quantified by laboratory screening with a slotted plate (slot width 100 or 150 μm) are defined as macro stickies. They are removed to a high degree by slotted screens in processing paper for recycling. The larger the particles, the higher their chance to be removed in industrial processes. In a