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Class 162/297 - Pneumatic pressure or vacuum means acting directly on stock on mold surface


Subclass of Class 162 - Paper making and fiber liberation
Definition: Apparatus in which means are provided for either increasing
No. of patents: 26
Last issue date: 03/22/2005


NumberTitleIssue Date
6869506Apparatus for dewatering a paper web and associated system and method
An apparatus for decreasing heat emission and enhancing a vacuum system in a papermaking machine is provided. Such an apparatus includes a drying device having an inlet for receiving heated air for removing moisture from a paper web and an outlet for exhausting the ...
03/22/2005
6855227Paper machine and method of dewatering a fiber web using displacement pressing and through air drying
A method of dewatering a fiber web in a paper machine, includes the steps of: dewatering the fiber web in a forming section to a solids content of greater than approximately 10%; displacement pressing the fiber web in an air press assembly to a solids content of gre...
02/15/2005
6733261Apparatus for smooth surface gypsum fiberboard panels
An improved method and apparatus for imparting a smooth surface to a gypsum fiber panels. The method involves imparting energy to the surface of the slurry as the slurry is dewatered just prior to rehydration. The apparatus used to impart the energy is an air lance ...
05/11/2004
6592721Apparatus for dewatering a suction papermaking roll
An air delivery device is provided for dewatering a suction roll in a paper machine by applying pressurized air to expel residual water or debris outwardly from through-holes. The air delivery device is positioned at a suitable circumferential position of...
07/15/2003
6497789Method for making tissue sheets on a modified conventional wet-pressed machine
A tissue sheet is made using a modified wet pressing machine in a modified wet pressing process employing an integrally sealed air press. After initial formation and conventional vacuum dewatering, the wet web is conformed to the surface contour of a rela...
12/24/2002
6473998Process for pre-drying textile filaments after wet treatment and device for practicing this method
A process and a device for pre-drying textile filaments after wet treatment. A process and a device for predrying textile filaments after wet-treatment consist essentially in applying simultaneously to a layer of wet filaments (3) passing by on a conveyor...
11/05/2002
6475343Process and device for dewatering a fibrous material web
Process and apparatus for dewatering a fibrous material web. The process includes guiding the fibrous material web through a dewatering zone, and directing a plurality of gas pressure pulses of a pressurized displacement gas one after the other onto a sur...
11/05/2002
6454904Method for making tissue sheets on a modified conventional crescent-former tissue machine
A tissue sheet is made using a modified wet pressing process employing an integrally sealed air press. After initial formation and conventional vacuum dewatering, the wet web may be conformed to the surface contour of a relatively coarse fabric to give th...
09/24/2002
6294050Drying end of a machine for the production of a material web and method of drying a material web
Drying end of a machine for the production of a material web such as paper or cardboard. The drying end includes at least one impact flow drier configured to bombard at least one surface of the material web with hot air or hot steam impact flow. Also prov...
09/25/2001
6254731Steam box including a suction zone in an area of a web adjacent to edge cutter devices
A steam box including a steam chamber for blowing steam toward a paper or board web that runs on support of a wire and a suction zone arranged at the trailing side of the steam chamber of the steam box for providing suction of steam mist discharged by the...
07/03/2001
6083346Method of dewatering wet web using an integrally sealed air press
A tissue sheet is made using a modified wet pressing process employing an integrally sealed air press. After initial formation and conventional vacuum dewatering, the wet web is conformed to the surface contour of a relatively coarse fabric to give the we...
07/04/2000
6042692Paper machine for manufacturing a web of soft crepe paper
A paper machine for manufacturing a web of soft crepe paper comprises a wet end (1) having at least one forming wire (4) for forming and supporting a web (7), and a drying section (2) with a through drying machine (13), a drying cylinder (17) and a perfor...
03/28/2000
5582728Pressure washer drum
In prior pressure washer drums, the filter deck was supported on the central shaft by spokes welded to the central hub which was in turn welded to the shaft. The extreme forces caused premature failure of the welded joints. The present invention provides ...
12/10/1996
5482594Liquid removal apparatus and method for wood pulp
A pulp dewatering and washing apparatus comprising a pressure vessel in which is contained a table assembly having a foraminous surface, in the form of a conveying belt, on which a pulp slurry is deposited. A differential pressure chamber in the table ass...
01/09/1996
4892622Method for resisting formation of undulations in a fiber/water mixture during forming of a paper web in a paper-making machine
A method of and arrangement for resisting formation of undulations in a fiber/water mixture supplied onto a forming wire at an open planar wire section of a paper-making machine include establishing over the wire an air curtain extending over the full bre...
01/09/1990
4719772Apparatus for removing ink particles from paper products
A process and apparatus for removing ink particles from an inked paper product which includes a conveyor for conveying the paper product along a path, the conveyor being constructed of a semi-permeable material that passes the ink particles while retainin...
01/19/1988
4662992Twin-wire papermaking machine and method of dewatering a paper web in a twin-wire papermaking machine
In a particularly simple construction a twin-wire papermaking machine possesses a reduced number of rolls as well as a compact arrangement. The foregoing and the greatest possible velocity of a through-passed paper web can be obtained by employing non-suc...
05/05/1987
4595501Horizontal endless belt vacuum filters
A horizontal endless belt vacuum filter comprises an endless belt pierced, in its central part, with holes moving above the upper opening of a longitudinal vacuum and extending beneath the upper side of the conveyor belt. An endless filtering medium passe...
06/17/1986
4459175Longitudinal wire papermaking machine
A longitudinal wire papermaking machine is disclosed wherein the longitudinal wire is guided in a dewatering region, following a pre-dewatering path, out of a wire plane downwardly over a deflection element and then upwardly over a downwardly domed or arc...
07/10/1984
4389224Method and apparatus for accreting fibrous filter cartridges or other tubular articles
An accreted batt is progressively vacuum formed about a porous or perforated member passing through an accretion zone under conditions where felting of the fiber occurs under a constant vacuum condition and a consolidation and dewatering zone wherein the ...
06/21/1983
4158596Traveling wire web former
An apparatus and method of forming a continuous fibrous paper web by depositing the stock onto a forming run of a fourdrinier wire while dewatering the stock and collecting water beneath the wire and depositing the stock onto the wire from a spray or floo...
06/19/1979
4153550Method and apparatus for the continuous filtration of material impregnated with liquid
The present invention relates to a method and apparatus for the continuous filtration of material impregnated with liquid. This method is characterized in that pressure is exerted discontinuously on successive portions of the material to be filtered trave...
05/08/1979
4121968Secondary vacuum box for a rotary vacuum filter
An apparatus for improving the dewatering capability of a rotary drum vacuum filter or washer is described in which a suction box, independently supported above the filter drum, having an apertured outermost surface, and a vacuum means operating upon the ...
10/24/1978
4014738Sifting drum paper machine wherein the diluent water is controlled
Sifting drum paper machine having a sifting drum with a pulp material inlet located at the outside thereof and suction chambers disposed in the interior thereof, includes a measurement of pressure in the vicinity of a paper web-forming part on the surface...
03/29/1977
3989085Method and apparatus for leveling the cross-direction profile of stock slurry on a papermachine
Undesirable high concentrations of fiber and moisture in the cross-direction profile of a paper stock slurry laid upon a papermachine fourdrinier screen may be selectively dispersed to level the cross-direction profile by impacting the screen carried pond...
11/02/1976
3966546Apparatus for manufacturing sleeves from fiber pulp
Apparatus for manufacturing sleeves of fiber pulp by passing fiber pulp through a nozzle including a mandrel extending through the nozzle and a reciprocating piston mounted on the mandrel to exert pressure on the pulp. Screen members are located on the in...
06/29/1976
 
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