Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Reexamination Certificate
2006-02-07
2006-02-07
Halpern, Mark (Department: 1731)
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
C162S204000, C162S205000, C162S305000, C162S306000, C162S359100, C162S358300, C162S360200
Reexamination Certificate
active
06994771
ABSTRACT:
A method for treating a web of paper or board with a wetting substance or calendering the web prior to the cylinder dryer section of a paper- or boardmaking machine while the solids content of the web is still very low, typically in the range of 10–60%, wherein the web can be conveyed when so desired fully supported from the wire section of the paper- or boardmaking machine up to the winder, while simultaneously utilizing the quality benefits obtained from a controlled reduction of the web moisture content and dewatering of the same. The web is conveyed supported by a transfer belt (9) through at least one web surface treatment apparatus such as a coater station (S1B) or a calender prior to passing the web to the first dryer cylinder group (1) of the paper- or boardmaking machine. One nip (11, 13) supported by a transfer belt (9) is suitable for dewatering simultaneously with the application of a treatment substance to the web. The dewatering nip (11, 13) may be formed between a transfer belt (9) and the wire (2) of the wire section or the felt (14) of the press section.
REFERENCES:
patent: 4793899 (1988-12-01), Skaugen
patent: 4931143 (1990-06-01), Karvinen et al.
patent: 5256257 (1993-10-01), Schiel
patent: 5575891 (1996-11-01), Trokhan et al.
patent: 0 881 329 (1998-12-01), None
patent: 459125 (1936-12-01), None
Korhonen Hannu
Rantanen Rauno
Cohen & Pontani, Lieberman & Pavane
Halpern Mark
Metso Paper Inc.
LandOfFree
Method and apparatus for handling a paper or board web does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for handling a paper or board web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for handling a paper or board web will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3701852