Headbox apparatus for a papermaking machine

Details Headbox apparatus for a papermaking machine Headbox apparatus for a papermaking machine

2007-12-18

2011-12-13

Halpern, Mark (Department: 1741)

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

Reexamination Certificate

active

08075737

ABSTRACT:
A headbox apparatus for a papermaking machine is disclosed. The headbox apparatus defines a flow path for stock flowing between an upstream location and a downstream slice lip. The apparatus includes a plurality of blocks which are anchored within the flow path between the upstream location and the slice lip. Each block and an adjacent block of the plurality of blocks define therebetween a flow tube for the flow therethrough of the stock. The flow tube has an upstream portion having an upstream and a downstream end. The flow tube has a downstream portion having an upstream and a downstream extremity, the upstream extremity of the downstream portion extending from the downstream end of the upstream portion. The downstream portion of the flow tube has a volume which is greater than a further volume of the upstream portion of the flow tube such that when the stock flows from the upstream portion to the downstream portion of the flow tube, the stock is mixed within the downstream portion.

REFERENCES:
patent: 4617091 (1986-10-01), Rodal et al.
patent: 5110416 (1992-05-01), Linsuri et al.
patent: 5147509 (1992-09-01), Kuragasaki et al.
patent: 5183537 (1993-02-01), Hergert et al.
patent: 6099692 (2000-08-01), Weisshuhn et al.
patent: 6248214 (2001-06-01), Stotz et al.
patent: 6383614 (2002-05-01), Carson et al.
patent: 6432275 (2002-08-01), Huovila et al.
patent: 6475344 (2002-11-01), Aidun
patent: 6902651 (2005-06-01), Fujiki et al.

Affiliated with

Also associated with

Rating

Headbox apparatus for a papermaking machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Headbox apparatus for a papermaking machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Headbox apparatus for a papermaking machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4268903