| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 162315000 | Means directing stock into contact with molding surface | 25 |
| 20120024490 | PULP FEEDER FOR USED PAPER RECYCLING APPARATUS - A pulp feeder capable of obtaining recycled paper of uniform texture, stable in the weight of the wet paper made on a mesh belt, in a very narrow used paper processing space of furniture size. A pulp feeding unit (pulp feeder) includes a retention unit disposed slidably on the upper side of an running mesh belt, for retaining a pulp suspension sent from a pulp manufacturing unit, and a paper making frame body for defining the supply width of the pulp suspension on the upper side of the mesh belt, in which the leading end position of this paper making frame body is provided with an overflow unit for keeping constant the water level of the pulp suspension retained in the retention unit. The pulp suspension supplied in the retention unit is retained to the water level defined the overflow unit, and is uniformly dispersed and supplied on the upper side of the mesh belt by cooperative action of this retention action and the running action of the mesh belt. | 02-02-2012 |
| 20120279671 | USED PAPER RECYCLING APPARATUS AND ITS CONSTITUENT DEVICES - A used paper recycling apparatus capable to be installed in small office or general household, friendly to environment and low in running cost, and assuring high confidentiality. A used paper recycling apparatus comprising a pulp making section for crushing and beating used paper and making into pulp, a paper making section for recycling paper by making used paper pulp from the pulp making section, and a control section for driving and controlling by interlocking the pulp making section and paper making section, which are incorporated in a furniture size apparatus case, in which the pulp making section includes a crushing unit for stirring and grinding the used paper, and a beating unit for beating the crushed used paper from the crushing unit, and the crushing unit and beating unit are circulating the used paper pulp. | 11-08-2012 |
| 162322000 | With diverse non-pulp material inlet | 1 |
| 20120247704 | FEEDER CHANNEL FOR DILUTING FLUID - Feeder channel for diluting a fluid, in connection with a headbox of a paper machine includes one or more reservoir-type spaces for receiving diluting fluid. An aperture is formed in the reservoir-type space, wherein the diluting fluid can be conducted into the stock flow space of the headbox. One or more shut-off/adjustment members, for adjusting the flow of diluting fluid, is fitted into the feeder channel. The shut-off/adjustment member is a shut-off/adjustment device that can be moved in the longitudinal direction in the aperture formed in the wall of the reservoir-type space. The shut-off/adjustment member that is partly or wholly inside the aperture with one or more cavities and/or recesses, via which the flow of diluting fluid from the reservoir-type space either directly or via an intermediate piece into the stock flow space can be adjusted by moving the shut-off/adjustment member in the aperture. | 10-04-2012 |
| 162336000 | Flow box, slice, and/or approach flow | 22 |
| 20080210400 | PULP FEEDER FOR USED PAPER RECYCLING APPARATUS - A pulp feeder for used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality is presented. The pulp feeder includes a partition member disposed slidably on the downside of a running endless mesh belt, and a paper making frame body disposed slidably on the upside of the mesh belt, and an overflow gate is provided in the paper making frame body for keeping constant the water level of the collected pulp suspension, and the pulp suspension supplied in the paper making frame body is collected up to a specific water level defined by the overflow gate, and is uniformly diffused and supplied on the upside of the running mesh belt. Accordingly, if the supply water volume of pulp suspension fluctuates, the water level of pulp suspension staying in the paper making frame body is always kept constant, and the weight of the wet paper manufactured on the mesh belt is stabilized. | 09-04-2008 |
| 20080216982 | Headbox apparatus for a papermaking machine - 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. | 09-11-2008 |
| 20080314543 | PAPER MACHINE FOR USED PAPER RECYCLING APPARATUS - The invention presents a paper machine for a used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality. The paper machine includes a paper making process unit for manufacturing wet paper from slurry pulp suspension sent from the pulp making section of a preceding process, and a drying process unit for drying the wet paper manufactured in the paper making process unit and making recycled paper, in which a processing conveyor is disposed between the paper making process unit and the drying process unit extending in the overall length of the paper making process and the drying process, and this processing conveyor is manufactured in a form of net belt conveyor having a running mesh belt of mesh structure composed of innumerable mesh cells for filtering and dewatering the pulp suspension. In this configuration, it is not required to exchange the conveyors when changing the process of the manufactured wet paper from the paper making process to the drying process. | 12-25-2008 |
| 20090020251 | Machine for forming a fibrous web - In a machine for forming a layered fibrous web, at least two different fiber suspensions are led through a head box ( | 01-22-2009 |
| 20120273150 | DISTRIBUTION CHANNELING IN CONNECTION WITH THE HEADBOX OF A PAPER MACHINE - Distribution channeling for stock suspension, the distribution channeling being in connection with a headbox of a paper machine The distribution channeling is fed with a transverse input channel for stock suspension, such as with an inlet pipe, and which distribution channeling feeds stock suspension into an intermediate chamber and onwards from the intermediate chamber to the slice channel of a paper machine. The distribution channeling is formed from a number of modular pieces and is fitted to the headbox after the input channel. One or more distribution channels, such as a hole, for the stock suspension flowing through a modular piece are formed in the modular piece. The modular pieces are placed side by side such that an interspace forms between them, from which interspace diluting water can be fed into the distribution channel. | 11-01-2012 |
| 162341000 | Vibratile or moving member treating stock | 10 |
| 20110265968 | HEADBOX FOR A MACHINE FOR PRODUCING A FIBROUS WEB - The invention relates to a headbox which comprises a feed device feeding the at least one fiber suspension, a perforated distribution pipe plate arranged immediately downstream thereof and having a plurality of channels arranged in lines and columns, an intermediate channel arranged downstream thereof, extending over the width of the headbox and having a plurality of means for dosing a fluid in partial fluid streams to the at least one fiber suspension in a preferably adjustable/controlled manner, the means being spaced apart from each other in the width direction of the headbox and the individual means comprising a plurality of dosing channels having respective dosing channel openings and an opening center line, arriving at different levels and being connected to a common supply channel. The headbox further comprises a downstream turbulence generator having a plurality of flow channels arranged in lines and columns and a headbox nozzle which is directly contiguous to the turbulence generator and which has a nozzle gap. The headbox according to the invention has a system pressure loss which is substantially composed of a first pressure loss between the feed device and the intermediate channel and a second pressure loss in the turbulence generator, the second pressure loss and the first pressure loss being in a ratio ranging from 8:1 to 1:1, preferably from 4:1 to 1:1, particularly from 2:1 to 1:1. | 11-03-2011 |
| 20110290440 | HEADBOX FOR A MACHINE FOR PRODUCING A FIBROUS WEB - The invention relates to a headbox for a machine for producing a fibrous web, in particular a paper or cardboard web, from at least one fibrous stock suspension, having a feed apparatus which feeds the at least one fibrous stock suspension, having a distributor-pipe perforated plate which is adjacent downstream and has a multiplicity of channels which are arranged in rows and in columns, having an intermediate channel which lies downstream of the latter, extends over the width of the headbox and has a plurality of means which are spaced apart from one another in the width direction of the headbox for the preferably regulatable/controllable metering of a fluid in fluid part streams into the at least one fibrous stock suspension. The headbox according to the invention is characterized in that the means for the preferably regulatable/controllable metering of the fluid in fluid part streams into the at least one fibrous stock suspension is also configured for the preferably regulatable/controllable metering of at least one further fluid in fluid part streams into the at least one fibrous stock suspension, wherein the individual means comprises in each case a plurality of metering channels for the at least one further fluid, which metering channels have a respective metering-channel opening, open at different heights and are connected to a common supply channel. | 12-01-2011 |
| 20110290441 | HEADBOX FOR A MACHINE FOR PRODUCING A FIBROUS WEB - The invention relates to a headbox for a machine for producing a fibrous web, especially a paper or cardboard web, from at least one fiber suspension, comprising a feed device feeding the at least one fiber suspension, a perforated distribution pipe plate arranged immediately downstream thereof and having a plurality of channels arranged in lines and columns, an intermediate channel arranged downstream thereof, extending over the width of the headbox and having a plurality of means for dosing a fluid in partial fluid streams to the at least one fiber suspension in a preferably adjustable/controlled manner, the means being spaced apart from each other in the width direction of the headbox and the individual means comprising a plurality of dosing channels having respective dosing channel openings on the outlet side and a dosing channel length, arriving at different levels and being connected to a common supply channel. The headbox according to the invention is characterized in that the dosing channel length of the dosing channel is 1.5 times longer than the dosing channel opening of the dosing channel on the outlet side and in that the distance of the dosing channel opening of the dosing channel on the outlet side to the turbulence generator ranges from 0 to 50 mm. | 12-01-2011 |
| 20110303381 | HEADBOX FOR A MACHINE FOR PRODUCING A FIBROUS WEB - A headbox includes a feed device for feeding at least one fiber suspension, a perforated distribution pipe plate arranged immediately downstream thereof and having a plurality of channels arranged in lines and columns and an intermediate channel arranged downstream thereof extending over the width of the headbox and having a plurality of apparatuses for dosing a fluid in partial fluid streams to the at least one fiber suspension in an adjustable/controlled manner. The apparatuses are spaced apart from each other in the width direction of the headbox and the individual apparatuses include a plurality of dosing channels having respective dosing channel openings on the outlet side and a dosing channel length, arriving at different levels and being connected to a common supply channel. The headbox further includes a downstream turbulence generator having a plurality of flow channels arranged in lines and columns and a headbox nozzle which is directly contiguous to the turbulence generator and which has a nozzle gap. At least some sections of the channels of the perforated distribution pipe plate have a diffuser and the perforated distribution pipe plate has a length which is ≧0.5·√{square root over (partition)} area the partition area being the surface of the downstream perforated distribution pipe plate divided by the total number of the channels of the perforated distribution pipe plate. | 12-15-2011 |
| 20120168105 | HEADBOX FOR A MACHINE FOR PRODUCING A FIBROUS WEB - A headbox for a machine for producing a fibrous web, in particular a paper, cardboard or tissue web from at least one fibrous stock suspension, includes a feeding device for feeding the at least one fibrous stock suspension; a perforated distribution pipe plate which is arranged immediately downstream from the feeding device in the flow direction of the at least one fibrous stock suspension and which includes a plurality of flow channels arranged in rows and columns; an intermediate channel which is arranged immediately downstream from the perforated distribution pipe plate in the flow direction of the at least one fibrous stock suspension and which extends in a width direction of the headbox and includes two walls, for example having the width of the machine; a turbulence generator which is arranged immediately downstream of the intermediate channel in the flow direction of the at least one fibrous stock suspension and which has a plurality of flow channels arranged in rows and columns; and a headbox nozzle which is arranged immediately downstream of turbulence generator in the flow direction of the at least one fibrous stock suspension and which has a nozzle gap. Feeding device, perforated distribution pipe plate and intermediate channel are arranged in a first alignment plane, and turbulence generator and headbox nozzle are arranged in a second alignment plane. The two alignment planes form an angle in the range of >90 and <180°, for example ≧100 and ≦170°, or ≧110 and ≦160°. | 07-05-2012 |
| 20120186767 | HEADBOX, SHEET FORMING UNIT WITH A HEADBOX AND METHOD FOR OPERATING A SHEET FORMING UNIT - A headbox includes a feed device feeding the fibrous material suspension, a nozzle, and a turbulence-generating device. The fibrous material suspension is guided in the turbulence-generating device in sub-flows through turbulence-generating channels. Within the individual turbulence-generating channel of the turbulence-generating device, at least one region forming a fluidization region is provided, in which a pressure loss can be generated in the sub-flow of the fibrous material suspension guided through said region. The nozzle and the turbulence-generating device are designed and dimensioned such that they are suitable for setting a dwell time of ≦200 ms of the fibrous material suspension flowing through the same from a final fluidization region of an individual turbulence-generating channel before inlet into the nozzle as far as the outlet gap of the nozzle, and a pressure loss of ≧50 mbar in the final fluidization region upstream of the inlet into the nozzle. | 07-26-2012 |
| 20120193059 | METHOD FOR OPERATING A SHEET-FORMING UNIT, AND SHEET FORMING UNIT - A method for operating a sheet-forming unit of a papermaking machine. At least one fibrous material suspension is fed to a headbox and is conducted in a plurality of turbulence-generating channels to form sub-flows, and fed to a nozzle. From the nozzle, the at least one fibrous material suspension is in the form of a free jet into the forming unit to define an impingement line. In a final fluidization region of an individual turbulence-generating channel a pressure loss (Δp) of ≧50 mbar is generated within the fibrous material suspension before inlet thereof into the nozzle, and the fibrous material suspension is guided from the final fluidization region as far as the impingement line in such a way that the dwell time of the suspension in the region defined by the final fluidization region as far as the impingement line ranges from >30 ms to ≦300 ms. | 08-02-2012 |
| 20130075051 | HEADBOX FOR A MACHINE FOR PRODUCING A FIBROUS MATERIAL WEB, IN PARTICULAR A PAPER OR CARDBOARD WEB - A headbox for a machine for producing a fibrous material web, in particular a paper or cardboard web, includes: a central assembly preferably forming the carrier elements of a turbulence generator, said assembly having a table leaf on the bottom side; and a headbox nozzle adjoining directly downstream in the machine running direction and extending in the machine transverse direction, said nozzle comprising at least one lower and one upper continuous nozzle wall extending over the machine width. The lower nozzle wall of the headbox nozzle of the headbox includes a lower lip plate, in particular a lower lip carrier plate, which is connected, in particular welded, to the table leaf of the central assembly by means of ribs extending in the machine running direction and spaced apart in the machine transverse direction. The ribs are designed in an elastic or pliable manner in the machine transverse direction. | 03-28-2013 |
| 20130098573 | METHOD FOR OPERATING A SHEET-FORMING UNIT, AND SHEET FORMING UNIT - A sheet forming unit including a headbox with at least one feed device, a turbulence generating device having a plurality of turbulence generating channels and a nozzle. The nozzle includes an outlet gap located downstream from the headbox forming a line of impingement in a flow direction. Immediately upstream from the nozzle is the turbulence generating device in which during operation of the headbox a fibrous stock suspension passes through the plurality of turbulence generating channels in partial flows. Inside a turbulence generating channel there is a final fluidization region in which a pressure loss is produced in the partial flow of fibrous stock suspension in the turbulence generating channel. The headbox and the forming unit are arranged so that a dwell time of the fibrous stock suspension from the final fluidization region to the line of impingement on the clothing is ≧30 ms to ≦300 ms. | 04-25-2013 |
| 20130299113 | HEADBOX FOR THE PRODUCTION OF PAPER OR PAPERBOARD - A headbox is provided that comprises at least one first inlet channel adapted to receive furnish comprising fibres, at least one turbulence generator connected to the first inlet channel, a second inlet channel adapted to receive a non-fibrous high consistency composition, and a sliced cone connected to the turbulence generator and the second inlet channel. The first inlet channel and the turbulence generator are arranged so that the furnish is passed through the first inlet channel and further to the turbulence generator and thereafter to the sliced cone. The second inlet channel is arranged so that the non-fibrous high consistency composition is passed through the second inlet channel and directly to the sliced cone bypassing the turbulence generator. | 11-14-2013 |
| 162343000 | With vanes or pulp stream dividing means | 6 |
| 20090218064 | Tube bank apparatus for distributing stock - A tube bank apparatus is disclosed for distributing stock in a headbox of a papermaking machine. The apparatus includes a tube having a first and a second portion for the flow therethrough of the stock. The first portion defines a bore for the flow therethrough of the stock, the bore having an upstream and a downstream end. The second portion defines a passage for the flow therethrough of the stock, the passage having an upstream and a downstream extremity. The upstream extremity of the passage cooperates with the downstream end of the bore so that the stock flows from the upstream end to the downstream end of the bore and then through the upstream extremity and then the downstream extremity of the passage. The downstream end of the bore has a cross-sectional area which is less than a further cross-sectional area of the upstream extremity of the passage. Also, the downstream extremity of the passage has a cross-section of trapezoidal configuration. | 09-03-2009 |
| 20100108281 | Tube bank apparatus for distributing stock - A tube bank apparatus is disclosed for distributing stock in a headbox of a papermaking machine. The apparatus includes a tube having a first and a second portion for the flow therethrough of the stock. The first portion defines a bore for the flow therethrough of the stock, the bore having an upstream and a downstream end. The second portion defines a passage for the flow therethrough of the stock, the passage having an upstream and a downstream extremity. The upstream extremity of the passage cooperates with the downstream end of the bore so that the stock flows from the upstream end to the downstream end of the bore and then through the upstream extremity and then the downstream extremity of the passage. A first, second and third edge define at least a part of the downstream extremity of the passage, the second edge extending between the first edge and the third edge such that a sum of a first angle defined between the first edge and the second edge and a second angle defined between the second edge and third edge is less than 180 degrees. | 05-06-2010 |
| 20110259540 | DOUBLE-LAYER HEADBOX FOR A MACHINE FOR PRODUCING A DOUBLE-LAYER FIBROUS WEB - The invention relates to a dual-layer material ramp for a machine for producing a dual-layered fibrous web, in particular a dual-layered paper or cardboard web, from two fibrous suspensions, comprising a material ramp nozzle with two nozzle spaces extending along the width and separated from one another on the inside by a separating wedge, said nozzle spaces guiding a respective fibrous suspension during operation of the dual-layer material ramp as fibrous suspension streams and coming together, each of said nozzle spaces comprising an upstream feed device, a downstream outlet gap with a gap width, said gap extending along the width and an outer wall on the outside, wherein the separating wedge comprises two separating wedge surfaces that are contacted by the respective fibrous suspension stream during operation of the dual-layer material ramp. The dual-layer material ramp according to the invention is characterized in that the separating wedge comprises two separating wedge areas, each having a separating wedge angle, an upstream separating wedge starting area and a downstream separating wedge end area, that the two separating wedge angles of the two separating wedge areas assume different angular values, wherein the separating wedge starting angle of the upstream separating wedge starting area assumes a greater angular value than the separating wedge end angle of the downstream separating wedge end area, and that a non-planar transition area is provided between at least one separating wedge surface of the separating wedge between the two separating wedge areas of the separating wedge. | 10-27-2011 |
| 20110303382 | SHEET FORMING SYSTEM FOR A MACHINE FOR PRODUCING A MULTILAYER FIBROUS WEB - The invention relates to a sheet-forming system for a machine for producing a multilayer fibrous material web, comprising a multilayer headbox having a headbox nozzle, which has at least two nozzle chambers that are separated from one another by at least one separating wedge, and further comprising a gap former, which is connected directly downstream of the multilayer headbox and has two continuous revolving screens, the first screen of which runs over a circumferential area of a forming roll and the second screen of which runs over a circumferential area of a breast roll and then runs onto the first screen in the area of the forming roll to form a wedge-shaped material inlet gap. The sheet-forming system according to the invention is characterized in that the separating wedge has a separating wedge protrusion in a range of 0.05 to 3.0 of the largest single gap width of the at least two nozzle chambers; the separating wedge comprises two separating wedge areas, each having one separating wedge angle, an upstream separating wedge starting area and a downstream separating wedge ending area; the two separating wedge angles of the two separating wedge areas assume different angle values, wherein the separating wedge starting angle of the upstream separating wedge initial area assumes a greater angle value than the separating wedge ending angle of the downstream separating wedge end area, and at least one separating wedge surface of the separating wedge is provided as a nonplanar transitional area between the two separating wedge areas of the separating wedge; the fibrous material suspension free jet formed from at least two fibrous material suspension streams has a free jet length in the range of 100 to 500 mm, and the forming roll has a diameter in the range of 1,200 to 2,500 mm. | 12-15-2011 |
| 20120138251 | HEADBOX FOR A MACHINE TO PRODUCE A FIBER WEB - Headbox for a machine to produce a fiber web, in particular a paper, cardboard or tissue web from at least one fibrous suspension, having a headbox nozzle comprising an upper nozzle wall and a lower nozzle wall, as well as two side walls tapering to form an outlet, and having an inner chamber through which the fibrous suspension flows in flow direction during operation of headbox, whereby on upper nozzle wall of headbox nozzle a baffle is arranged on the outlet side which is movable by way of several elements and which extends across machine width, and which has a baffle protrusion and a baffle immersion depth and which has at least two surfaces—an upstream ramp surface and a subsequent main surface contacted by a fibrous suspension during operation of headbox. The inventive headbox is characterized in that between ramp surface of baffle and main surface of baffle at least one refraction surface which is in contact during operation of headbox with a fibrous suspension is provided on baffle. | 06-07-2012 |
| 20140060765 | Headbox apparatus - A headbox apparatus for a papermaking machine is disclosed. The headbox apparatus defines a flow path for stock flowing between an upstream header and a downstream slice lip. Each block and an adjacent block of a plurality of blocks defines therebetween a flow tube for the flow therethrough of the stock. An upstream ramp is defined by a first surface for generating an upstream vortex adjacent to the first surface. A downstream ramp is defined by a second surface for generating a downstream vortex adjacent to the second surface. Adjacent blocks also generate downstream vortices which rotate in opposite directions relative to each other within the flow tube so that impact of the upstream and downstream vortices on a flow consistency and a velocity uniformity of the stock is reduced. | 03-06-2014 |
| 162344000 | Slice | 1 |
| 20110290442 | TWIN FABRIC FORMING SECTION WITH MULTIPLE DRAINAGE SHOES - A forming section for a twin fabric papermaking machine, wherein after stock impingement, the two fabrics carry and sandwich the stock. A plurality of spaced apart drainage shoes, selectively provided to either or both of the fabrics, provides continuous support in the machine direction for the respective fabric in sliding contact, and each drainage shoe deflects the fabrics by a selected angle of wrap comprising an angular displacement between the leading edge and the trailing edge of the drainage shoe. At least one of the drainage shoes is secured to a drainage box and is provided with a plurality of drainage openings extending from the fabric contacting surface through to the machine side surface of the shoe. The arrangements of the invention provide improved drainage and formation of the paper web. | 12-01-2011 |
