Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Jan-Erik Berg"'
Autor:
Stefan B. Lindström, Rabab Amjad, Elin Gåhlin, Linn Andersson, Marcus Kaarto, Kateryna Liubytska, Johan Persson, Jan-Erik Berg, Birgitta A. Engberg, Fritjof Nilsson
Publikováno v:
Fibers, Vol 12, Iss 1, p 2 (2023)
In the pulp and paper industry, pulp testing is typically a labor-intensive process performed on hand-made laboratory sheets. Online quality control by automated image analysis and machine learning (ML) could provide a consistent, fast and cost-effic
Externí odkaz:
https://doaj.org/article/bd960bf761ee4de289fed7a9a22edfe0
Autor:
Tove Joelsson, Anna Svedberg, Sven Norgren, Gunilla Pettersson, Jan-Erik Berg, Cherryleen Garcia-Lindgren, Per Engstrand
Publikováno v:
SN Applied Sciences, Vol 3, Iss 5, Pp 1-9 (2021)
Abstract The dry strength properties of hot-pressed moist paper improved as stiff high-yield pulp fibers soften and the sheet density increased. Very high wet strength was also achieved without adding strengthening agents. This research focuses on a
Externí odkaz:
https://doaj.org/article/7f57a9d7fc1f48279cfd1092baf6ff48
Publikováno v:
Journal of the Brazilian Society of Mechanical Sciences and Engineering. 45
Softwood pulp flow in rotating and non-rotating grooves is numerically simulated in the present study to investigate the fluid flow and the forces acting on a representative surface mounted in the groove. The viscosity of softwood pulp with various c
Autor:
Jan-Erik Berg, Erik Persson, Börje Hellstadius, Henrik Edlund, Thomas Granfeldt, Mikael Lundfors, Per Engstrand
Publikováno v:
Nordic Pulp & Paper Research Journal. 37:349-355
Chemithermomechanical pulp (CTMP) is often used in middle layers of multiply paperboards due to its high bulk at specified strength. Such a CTMP should consist of well-separated undamaged fibres with sufficient bonding capacity. The basic objective o
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering. 235:2045-2058
Numerical simulation of pulp flow in rotating and non-rotating grooves is carried out to investigate the effect of pulp rheological properties and groove geometry on the rotational motion of the pulp flow. The eucalyptus pulp suspension is considered
Publikováno v:
Nordic Pulp & Paper Research Journal. 36:33-41
Chemithermomechanical pulp (CTMP) is often used in central layers of multiply paperboards due to its high bulk and strength. Such a CTMP should consist of well-separated undamaged fibres with sufficient bonding capacity. The basic objective of this w
Publikováno v:
BioResources. 2019, Vol. 14 Issue 1, p882-894. 13p.
Publikováno v:
Nordic Pulp & Paper Research Journal. 33:448-459
Increased wood softening and refining intensity have earlier been utilized to improve refining efficiency in mechanical pulping. We have evaluated a combination of increased softening by low dose sulphite chip pretreatment and increased intensity by
Publikováno v:
Nordic Pulp and Paper Research Journal. 32:615-622
Process intensification is a term used in the chemical process industry for major improvements in the process design leading to radical changes in process complexity, equipment size and efficiency. ...
Publikováno v:
July 2017. 16:419-429
Many mechanical pulping mills use low consistency (LC) refining for energy efficient fiber development. In this study, energy efficiency and pulp quality were evaluated for six processes, of which four included LC refining. We studied two different t