Cover Image

Dewatering & Forming Fundamentals for Roll Top-Formers and the Governing Factors in papermaking processes

Jianan Liu, Zhen Li, Da Gao, Huiming Fan


Roll top formers are widely used for Fourdrinier paper machines, typically with a speed of less than 1200 m/min. In a roll top former, wet fiber web is dewatered by the extrusion force of two wires and the centrifugal force of the roll. The present work focuses on the dewatering and forming mechanisms of roll top formers and the governing factors relevant to the structural characteristics of the formers. This study would provide usefull information for the design and applications of roll top formers in paper mills.

Full Text:



Lebel R. G., Archambault D., Routhier B. and Sarasin A. Reed Bel-Bond-A year later. Pulp & Paper Canada, 1985, 86(12): 147-151

Evans John C. W. Forming section upgrade improves quality of newsprint at CPFP mill. Pulp & paper, 1989, 63(4): 59-60

Clarke, R. L. The Evolution of Beloit forming technology. Pulp & Paper Canada, 1995, 96(8): 37-41

Wang Xiongbo. Application of Top Flyte “C” Former in Paper Machine Rebuilding. Paper Science & Technology, 2001, 20(2): 44-46

Fan Hui-ming, Liu Jian-an, Meng Fan-na, Zhong Han-zong. Mechanism and Application of No-Driven Top Former. Paper and Paper Making, 2011, 30(6): 11-13

Wang Fuji, He Jianglin. Operation Practice of D Type Top Former in Paper-making with Long Fibers. China paper making, 2012, 31(7): 71-73

Nordstrand A. and Lehtinen A., Improved sheet forming with the new sym-former design. Tappi Journal,1983, 66(6): 67-68

Jong J., Gooding R., Rompre A., Survey of top-former operation and performance. Pulp and Paper Canada, 2004, 105(8): 33-38

Harwood J. W. A comparison of top wire formers. Pulp and Paper Canada, 1987, 88(6): 123-129

Cronshaw T., Perrault J. Top flyte formers at abitibi pine falls one year after start-up. Pulp & Paper Canada, 1986, 87(9): 63, 65-66

Loy K. W. H. Top Flyte: A Fourdrinier top wire former. Paper Technology and Industry, 1985, 26(5): 239-240

Liu Jianan, Fan Huiming, Chen Kefu, Peng Y. The mechanism and application of the roll top former. China paper making, 2007; 26(4): 34-36

Hohol Roman. Greater emphasis on quality spurs top former development. Pulp and paper Journal, 1984, 37(7): 14-15

Ruedige R., Bubik A. Twinformer twin wire technology—operation experience and results. Paper Technology and Industry, 1985, 26(5): 233-236

Chen H. Study on the mechanism and application of the dewatering of the pulp, [D]. South China University of Technology, 2002, 5

Thorp, B. A. Water removal principles on roll-type, top-wire formers. Tappi Journal, 1985, 68(4): 108-111

Peirault W. Top Flyte update:Operating parameters and paper properties. Pulp and Paper Canada, 1987, 88(4): 80-82



  • There are currently no refbacks.

Copyright (c) 2018 Jianan Liu, Zhen Li, Da Gao, Huiming Fan

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.