PowerBonds
| Reference number | |
| Coordinator | KUNGLIGA TEKNISKA HÖGSKOLAN - Institutionen för hållfasthetslära |
| Funding from Vinnova | SEK 1 720 100 |
| Project duration | December 2011 - December 2014 |
| Status | Completed |
Purpose and goal
The project was based on the idea of combining the advanced nano-level characterization tools, particle-level simulation methods and fiber modification to be able to reduce the fraction of expensive law material in paper, explore the property space and yet maintain mechanical characteristic of the product, provide tools for reducing basis weight and ensure smooth runnability during manufacturing and converting operations. The main responsibility of KTH was development and utilization of the simulation methods as well as coordinating WP abotu knowledge transfer to the industry.
Results and expected effects
The project results were presented through 9 industrial cases company-wise, ensuring the most effecting knowledge transfer. The project provided demonstrators for increasing strength and stiffness of the sheets using xylan and PEM fiber modification, which showed the effect similar or superior to moderate refining without affecting the density. The effect was reproduced on both hard and softwood pulp. The established scientific infrastructure and combined outcomes of the project provided tools for decreasing grammage and improving runnability.
Approach and implementation
The project was partitioned onto 6 work-packages. The results of the project were presented through solving concrete cases, which ensured focus and coordination between the involved partners. -Effects of strength additives -Effects of refining -Effects of furnish variation -Fiber to fiber interaction in a wet state -Unknown breaks -Initial wet strength -Bond making -Fiber functionalisation -Degradation of bending stiffness in banknotes. The results of the project were presented company-wise, which allowed for more efficient knowledge transfer and active discussion.