Автор |
Lehtinen, Jukka A. |
Дата выпуска |
1986 |
dc.description |
ABSTRACTThe functioning of a conventional heated platen laboratory press for paper or board press dry experiments is considered analytically and in the light of experimental results from the literature. A press dry sample dries so that the evaporation zone recedes from the edges toward the center. Since the dwell time of the web within a certain moisture content range influences the resulting strength characteristics, a conventional press dry experiment will not produce a uniformly strong web. To study the possible distribution of the strength deviation, a strength development function is generated and used in computer simulation of a web being press dried. The results emphasize the importance of dwell time as a factor in press dry strength devel oprnent. Finally, basic principles are reviewed or evolving an improved press dry laboratory device, and a model is proposed. |
Формат |
application.pdf |
Издатель |
Taylor & Francis Group |
Копирайт |
Copyright Taylor and Francis Group, LLC |
Тема |
Owell time |
Тема |
board |
Тема |
laboratory test |
Тема |
paper |
Тема |
press dry |
Тема |
strength |
Название |
A CRITICAL REVIEW OF THE CONVENTIONAL HOT PLATEN PRESSING METHOD OF LABORATORY PRESS DRYING |
Тип |
research-article |
DOI |
10.1080/07373938608916324 |
Electronic ISSN |
1532-2300 |
Print ISSN |
0737-3937 |
Журнал |
Drying Technology |
Том |
4 |
Первая страница |
183 |
Последняя страница |
215 |
Аффилиация |
Lehtinen, Jukka A.; Consultant to Tampella Ltd |
Выпуск |
2 |