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Journal articles
Open Access
Determination of sheet topography using Shadow Moiré method, TAPPI JOURNAL May 2005, Vol. 4(5)

Determination of sheet topography using Shadow Moiré method, TAPPI JOURNAL May 2005, Vol. 4(5)

Journal articles
Open Access
Production experience with curtain coating for woodfree coated paper, TAPPI JOURNAL, November 2005, Vol. 4(11) (512 KB)

Production experience with curtain coating for woodfree coated paper, TAPPI JOURNAL, November 2005, Vol. 4(11) (512 KB)

Journal articles
Open Access
Effect of thermal treatment on the structure of PCC particles, TAPPI JOURNAL, November 2005, Vol. 4(11) (352 KB)

Effect of thermal treatment on the structure of PCC particles, TAPPI JOURNAL, November 2005, Vol. 4(11) (352 KB)

Journal articles
Open Access
Adsorption analysis of cationic guar gum on fibers in closed papermaking systems, TAPPI JOURNAL, October 2005, Vol. 4(10) (128 KB)

Adsorption analysis of cationic guar gum on fibers in closed papermaking systems, TAPPI JOURNAL, October 2005, Vol. 4(10) (128 KB)

Journal articles
Open Access
Fouling in the paper machine wet end, TAPPI JOURNAL, October 2005, Vol. 4(10) (344 KB)

Fouling in the paper machine wet end, TAPPI JOURNAL, October 2005, Vol. 4(10) (344 KB)

Journal articles
Open Access
Influence of calendering conditions on paper surface characteristics a comparison between hard nip, soft nip, and extended soft nip calendaring

Influence of calendering conditions on paper surface characteristics a comparison between hard nip, soft nip, and extended soft nip calendaring

Journal articles
Open Access
Papermaking potential of hardwood pulps for decorative paper: a comparative study, TAPPI JOURNAL, September 2005, Vol. 4(9) (352 KB)

Papermaking potential of hardwood pulps for decorative paper: a comparative study, TAPPI JOURNAL, September 2005, Vol. 4(9) (352 KB)

Journal articles
Open Access
Alkenyl Succinic Anhydride (ASA), TAPPI JOURNAL, September 2005, Vol. 4(9) (216 KB)

Alkenyl Succinic Anhydride (ASA), TAPPI JOURNAL, September 2005, Vol. 4(9) (216 KB)

Journal articles
Magazine articles
Open Access
Rewet in wet pressing of paper, TAPPI JOURNAL September 2018

Rewet in wet pressing of paper, TAPPI JOURNAL September 2018

Journal articles
Magazine articles
Open Access
Upscaling of foam forming technology for pilot scale, TAPPI JOURNAL August 2019

ABSTRACT: The need for production cost savings and changes in the global paper and board industry during recent years have been constants. Changes in the global paper and board industry during past years have increased the need for more cost-efficient processes and production technologies. It is known that in paper and board production, foam typically leads to problems in the process rather than improvements in production efficiency. Foam forming technology, where foam is used as a carrier phase and a flowing medium, exploits the properties of dispersive foam. In this study, the possibility of applying foam forming technology to paper applications was investigated using a pilot scale paper forming environment modified for foam forming from conventional water forming. According to the results, the shape of jet-to-wire ratios was the same in both forming methods, but in the case of foam forming, the achieved scale of jet-to-wire ratio and MD/CD-ratio were wider and not behaving sensitively to shear changes in the forming section as a water forming process would. This kind of behavior would be beneficial when upscaling foam technology to the production scale. The dryness results after the forming section indicated the improvement in dewatering, especially when foam density was at the lowest level (i.e., air content was at the highest level). In addition, the dryness results after the pressing section indicated a faster increase in the dryness level as a function of foam density, with all density levels compared to the corresponding water formed sheets. According to the study, the bonding level of water- and foam-laid structures were at the same level when the highest wet pressing value was applied. The results of the study show that the strength loss often associated with foam forming can be compensat-ed for successfully through wet pressing.

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