Abstract
Foam-assisted web forming and chemical application technologies have great potential to improve manufacturing efficiency and product quality in the paper and nonwovens industries. In this study, the benefits of foam forming and foam-assisted application of chemicals were demonstrated in a pilot machine trial. Uniform high-bulk webs of unrefined bleached softwood kraft pulp (BSKP) and viscose fibers were manufactured by foam forming. It was shown that foam formed low-grammage and high-bulk viscose fiber webs can be strengthened by foam-assisted application of latex onto the wet web. Correspondingly, foam-assisted application of carboxymethyl cellulose (CMC) and anionic polyacrylamide (A-PAM) improved the strength of the foam formed low-grammage and high-bulk BSKP web. Overall, the pilot machine results indicated that material cost savings could be achieved and a high-performance product could be manufactured with foam-based technologies.
| Original language | English |
|---|---|
| Pages (from-to) | 61-66 |
| Journal | Tappi Journal |
| Volume | 22 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2023 |
| MoE publication type | A1 Journal article-refereed |
Funding
This research was funded by the VTT Technical Research Center of Finland. The authors wish to thank chemical companies for providing chemicals used in the pilot machine trials. In addition, discussions with Business Finland parties from the ChemFunc project were very valuable in interpretation of the results.
Keywords
- nonwovens
- paper machines
- basis weight
- kraft pulp
- production efficieny
- paper industries
- viscose fibers
- web forming
- nonwovens industries