Using Talc for Control of Pressure Sensitive Adhesives in the OCC pulp

Pressure sensitive adhesives are the most problematic kinds of sticky materials during paper recycling process. In this research talc as a useful additive in the paper making process with aim of physical control of pressure sensitive adhesives was used. The results showed that treatment of OCC pulp containing pressure sensitive adhesives caused reduction in both macro and micro stickies. Also addition of talc up to 1. 5 % reduced drained water turbidity. As result of talc addition to the OCC pulp screen accepted pulp and ash content raised significantly but the final paper tensile، burst and tear strengths decreased remarkably.