Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Reexamination Certificate
2005-04-19
2005-04-19
Griffin, Steven P. (Department: 1731)
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
C162S301000, C162S351000, C162S352000, C162S299000
Reexamination Certificate
active
06881302
ABSTRACT:
A paper former comprises two wires which converge for defining a paper production gap and a plurality of dewatering blades arranged in the paper production gap in a paper producing direction and brought into sliding contact with one of the two wires so that a stock is dehydrated while being conveyed in a state put in the paper production gap. Each of the plurality of dewatering blades is shaped into a convexly curved surface configuration bent along a traveling direction of the wires and equipped with a wire sliding contact surface brought into sliding contact with said wire for guiding the traveling of said wire, and grooves are made in said wire sliding contact surfaces as a moisture run-off opening for running off moisture developing through the dewatering from the wire side. This paper former thus constructed can suppress the occurrence of paper defects stemming from the landing of a material jet or paper defects stemming from the dewatering property, thus improving the paper quality.
REFERENCES:
patent: 4425188 (1984-01-01), Fujiwara
patent: 4623429 (1986-11-01), Tissari
patent: 4790909 (1988-12-01), Harwood
patent: 5507918 (1996-04-01), Polifke et al.
patent: 5562807 (1996-10-01), Baluha
patent: 5582688 (1996-12-01), Bando et al.
patent: 6309511 (2001-10-01), Iwata et al.
patent: 6372091 (2002-04-01), Wildfong et al.
patent: 05-071091 (1993-03-01), None
patent: WO 00 79041 (2000-12-01), None
Fujiki Keiichi
Iwata Hiroshi
Masuda Kazuhiko
Matsumoto Masanobu
Armstrong Kratz Quintos Hanson & Brooks, LLP
Griffin Steven P.
Hug Eric
Mitsubishi Heavy Industries Ltd.
LandOfFree
Former for use in paper production does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Former for use in paper production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Former for use in paper production will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3393635