Welcome to Imerys Performance Minerals


Newsprint Environment friendly Total Deposit Control agents for cleaner pulp, greater productivity and higher quality paper in newsprint mills

Imerys offers bespoke talc- and bentonite-based Total Deposit Control (TDC) solutions for improving recycled newsprint pulp cleanliness, mill productivity and the quality of the final paper products. 

Pulp cleanliness is critical for achieving optimum runnability in newsprint pulp and paper production. The raw material leaving the pulping process must be as free of contaminants as possible.

With more and more recycled fiber being used in the newsprint papermaking process, many mills are experiencing problems with contamination from stickies, such as adhesives, inks, plastics, binders and hotmelts, which form deposits in systems, resulting in decreased runnability and lower total machine efficiency, directly impacting earnings.

Imerys' bespoke talc- and bentonite-based Total Deposit Control solutions are environmentally friendly substitutes to chemical stickies control agents. They improve productivity and the finished product and enable mills to work with closed water circuits - reducing river pollution and water consumption.

The optimal flocculation behavior and high adsorption capacity of our solutions also improve fiber and filler retention and optimize dewatering behavior during sheet forming. 

Our cationic grades significantly reduce anionic charge in the system helping to reduce use of more expensive and less environmentally friendly cationic polymers. They are particularly effective in pulps containing high levels of anionic trash.

TDS can bring huge benefits

It keeps the virgin pulp and paper production process streams clean and increases mill productivity:

  • Improving pulp quality and fiber and filler retention
  • Preventing deposits in the equipment 
  • Increasing machine runnability and reducing downtime
  • Reducing broke on the paper machine
  • Reducing felt cleaning and leading to fewer felt changes 
  • Extending wire and machine fabric life 
  • Improving sludge dewatering and drainage time
  • Reducing anionic trash
  • Controlling ash levels
  • Allowing mills to work with closed water circuits, reducing water consumption and river pollution

It improves the quality of the finished paper:

  • Reducing dirt count and surface defects of finished paper 
  • Improving optical properties
  • Reducing friction
  • Reducing abrasion on cutter and converting equipment

We offer a full range technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us, we will be only too happy to help

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Paper & Board