More with Less — TrumpJet Flash Mixing for MFC and NFC
“More with less” is a common result with TrumpJet® systems supplied by Wetend. The innovative TrumpJet Flash Mixing technology homogeneously mixes chemicals and additives in a very short time, which allows dosing very close to headbox. It substantially improves efficiency.
TrumpJet reduces consumption, improves product characteristics, and often does both at the same time. This also applies for challenging additives like nano- and microfibrillated cellulose.
TrumpJet Flash Mixing technology fluidizes micro- and nanofibrillated cellulose gel to a low viscose liquid, and uniformly mixes it into the paper and cardboard pulp just before the headbox.
This late stage dosing gives a good response. Retention increases and in the wire section, most of the MFC/NFC fibers remain on the web.
Improved retention not only reduces additive consumption, but also the amount of MFC/NFC circulating in white water, which in turn improves cleanliness and minimizes process disruptions.
Homogeneous mixing enables better utilization of the additive and improves product characteristics. For example, if after the installation of a TrumpJet Flash Mixing system, MFC dosage is kept at the same high level as before, then the strength of the resulting sheet significantly increases.
Overall, TrumpJet Flash Mixing technology increases the process and end product quality benefits of MFC/NFC, while maintaining process cleanliness, cost efficiency and reduced consumption of chemicals and raw materials.
Fluidizing of MFC and NFC
Once the additive enters the TrumpJet mixer, due to the high volume and high velocity of the injection liquid, it is instantly precipitated into filaments, ligaments and finally into drops and droplets inside the fast moving injection stream. The hard-to-mix-gel of MFC/NFC has been fluidized and behaves like low viscose liquid. Then it is mixed in a flash of time into the main process flow.
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