Papermachine headbox profiling bar with fluid discharge orifices along its length
US4885060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1988 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Aug 3, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Flocs of papermaking fiber are dispersed by a multiplicity of white-water jets directed into a papermachine headbox prior to the slice opening. Jet direction is oriented counterflow to the papermaking stock slice flow to create maximum turbulence, fluid shear and energy dissipation. Such jets issue from nozzle orifices in the slice profiling bar and are supplied with fluid through a two-stage manifold system. To preserve vertical plane pliability of the conduit-connected profiling bar, section area of the profiling bar between nozzles is minimized. Self sealing, push fit, fluid conduit connections with the jet nozzle orifices are made with flexible conduits between a sectional bar type of intermediate header and the profiling bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.