Multifunctionality of High Molecular Weight GPAM in Linerboard, TAPPICon26

GPAM technology was developed in the 1960’s to provide strength in tissue and towel applications. Considerable improvements have been made over the years in the technology behind GPAM development and today’s newest GPAM chemistry provides excellent strength development as well as other on-machine benefits. Generation 4 GPAM (FennoBond™ 5400) shows good secondary benefits in boosting drainage and retention on a machine, as well as providing higher press efficiency and lower water retention value. The proposed mechanism is enhanced retention of fines due to the specific level of cationicity and molecular weight of the newer generation GPAMs. Generation 4 GPAM also gives higher strength performance than prior generations, as measured by internal bond, Mullen burst, STFI, and ring crush.

Comprehensive evaluations of the generation 4 GPAM polymer demonstrate that it delivers notable synergistic effects when used in combination with a range of papermaking chemistries. These include engineered cellulose derivatives (e.g., FennoBond™ ECA 720) as well as amphoteric retention and drainage aids. The observed synergies manifest in both process‑related and end‑use performance benefits, including: enhanced charge balance and fines/filler management, improved retention system responsiveness, and measurable gains in dry‑strength development across a variety of furnish conditions. From a functional standpoint, generation 4 GPAM exhibits versatility within the wet‑end program, serving either as a charge‑control agent to optimize the performance of engineered cellulosic additives-containing systems or as the primary dry‑strength resin (DSR) when paired with ECA when being used as a biobased functional promoter. This multifunctional behavior highlights the versatility of generation 4 GPAM in streamlining chemical strategies while supporting improved process efficiency and strength performance in papermaking operations. This gives papermakers the ability to get more impact out of their performance chemicals with no additional costs.

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