Problem Summary

Poor filler retention can cause sheet quality and productivity problems on the machine.  Uneven distribution of filler results in both two-sidedness and poor optical properties that can negatively impact sheet quality.   Wet end cleanliness (relating to defects) and additive efficiency are some of the most glaring productivity issues. 

Papermakers have historically relied on retention aids to address these and other problems related to filler retention.   Older, more traditional technologies such as anionic and cationic flocculants provide retention but have some limitations.   Newer alternatives include inorganic microparticles and organic micropolymers.   While these chemistries offered a step change improvement in filler retention and overall chemical efficiency of the wet end, papermakers still demand more.  They desire a program that offers an effective balance of retention, drainage, formation, ease of use and cost.

Recommended Solution

Understanding these needs, Hercules developed PerForm^®  SP Advanced Retention and Drainage Technology.  This technology is a program approach providing papermakers the ability to further optimize the performance of their wet end.  PerForm SP combines a series of mechanisms from best-in-class technologies along with a new, structured organic particulate allowing the papermaker ultimate versatility.  This approach has proven to be more effective in filler retention than other chemistries which allows for the production of quality tons while reducing operating cost.

Key benefits recorded from practical applications of PerForm^® SP Advanced Retention and Drainage Technology include:

Provides very high ash retention levels compared to other microparticle technologies
Provides high levels of drainage with the higher retention
Effective in alkaline systems for CaCO3 and TiO2 retention
Cost effective, high performance additive
Controllable, linear response curve for a stable wet end
Effective with anionic or cationic flocculant programs
Compatible with any type of starch being used