CA1099588A - Equipment for dehydrating runs of fibrous material - Google Patents
Equipment for dehydrating runs of fibrous materialInfo
- Publication number
- CA1099588A CA1099588A CA320,921A CA320921A CA1099588A CA 1099588 A CA1099588 A CA 1099588A CA 320921 A CA320921 A CA 320921A CA 1099588 A CA1099588 A CA 1099588A
- Authority
- CA
- Canada
- Prior art keywords
- sieve
- tracks
- felt
- track
- dehydrating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
- D06C15/02—Calendering, pressing, ironing, glossing or glazing textile fabrics between co-operating press or calender rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/74—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders
- D21F1/78—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with pressure
Abstract
EQUIPMENT FOR DEHYDRATING RUNS OF FIBROUS MATERIAL
Abstract of the Disclosure This invention relates to an improvement in equipment for dehydrating a run of fibrous material, the material to be dehydrat-ed passing between two endless sieve tracks and being compress-ed by pairs of pressure means, the improvement comprising pres-sure means having groove means on the surface thereof in the direction of motion of the sieve tracks, or perforations, or planar surfaces, and including a track of felt inserted between the track of each sieve and a pressure means.
Abstract of the Disclosure This invention relates to an improvement in equipment for dehydrating a run of fibrous material, the material to be dehydrat-ed passing between two endless sieve tracks and being compress-ed by pairs of pressure means, the improvement comprising pres-sure means having groove means on the surface thereof in the direction of motion of the sieve tracks, or perforations, or planar surfaces, and including a track of felt inserted between the track of each sieve and a pressure means.
Description
58~
This invention relates to equipment for dehydrating runs of fibrous ma~erial, the goods to be dehydrated being made to pass between two endless sieve-tracks and being pressurized by pairs of rolls or compression plates.
The purpose of this equipment is to improve the dehydration of runs of cloth and to achieve a more favorable pressure distribu-tion in the compression zone.
It is known to compress the goods to be dehydrated suffic-ientLy between the sieve or felt tracks in so-called double band ln presses between pairs of rolls or compression plates that as dry as possible a compressed cake will remain. The rolls used may be of smooth, grooved, perforated or of another surface character o so as to be able to drain the water against low flow resistance from the compression zone. A mesh sieve consists either of metal wire or of plastic filaments or yarns. The mesh sieve may have ;`
one or more layers depending upon the requirements. One require-ment is important, namely that the sieve tracks be of long life for appropriate dehydration and operating characteristics.
It is also known to use felt tracks made of woven or need-led felts or to use them in combination for dehydration. Such equipment is predominantly used when dehydrating fibrous mater-ials. It further has become known to place a wire mesh band underneath the sieve track to increase the transverse dehydration of the felts. In this latter case the run of fibrous material to be dehydrated passes onto the felt and is made to pass together with that felt and the sieve below the felt through the compres-sion gap.
5~3 When dehydrating with a sieve and a face roll alone, the pressure distribution leads to the destruction of the run o~ material, which obviously is a drawback.
When dehydrating using a sieve as the filtering means on a perforated or grooved roll~ the determining drawback is the high reverse-humidifying rate, that is, the flow of water drawn back from the grooves through the sieve into the run of material during the decompression at the compression roll exit.
There is a similar reverse-humidification when the run of fibrous material comes into contact with the track of felt and when a mesh sieve is placed underneath the felt toward the roll surface.
There is a further drawback in dehydration engineering if a felt is used as the filtering means and contacts the run of fibrous material hecause of the formation at the interface between the fibrous material and the filtering means or between the compression cake and the filtering means of an especially dense layer of fibers, that is, of a transition layer with very low permeability and correspondingly high pressure drop.
The invention addresses the problem of providing equipmen-t for dehydrating fibrous cloths or materials allowing enlargement of the capillary diameter for small capillary volume at the interface between the filter cake and the covering.
This goal is achieved in this invention in the provision of pressure means having groove means on the surface thereof in the direction of motion of the sieve track5, or perforations, or planar surfaces, including a track of felt inserted between the track of each sieve and a pressure means, and separate guides and deflecting rolls for the sieve tracks and the tracks of felt, the felt tracks having a capillary suction capacity which is from ten to a thousand-fold higher than that of the sieves.
rw/ - 2 -5t~8 In order to implement an improvement in dehydration, a further embodiment of the invention provides that the sieve and the roll surface evidence approximately the same capillary height of suction and that the tracks of felt have a capillary height of suc-tion which is from ten-fold to a thousand- fold higher ~
It becomes possible by this step that the capillary diameter for small capillar~ volume at the interface between the filter cake and the covering or filter means is substantially enlarged and that thereby reverse-humidlfication is effectively prevented.
The invention will be further illustrated by reference to the accompanying drawings, in which:
Figure 1 is a front view of a pair of compression rolls with sieve and felt tracks;
Figure 2 is a cross-section relating to Figure 1; and Figure 3 is a capillary diagram of the dehydration ~quip-ment .
Figure 1 shows a pair of compression rolls composed of an upper roll 1 and a lower roll 2. The axes of the rolls are in the same plane so that for the case of nearest approach of the sur-faces of the rolls, the maximum pressure will be exerted on the run of sieve, filter or material made to pass through the two rolls.
The upper track of felt 3 rests against the upper roll 1. Next, the track of sieve 5 lies against the upper roll, and in similar mannèr, the track of felt 4 and that of sieve 6 are applied against the lo~rer roll 2. The run of material 7 passes through the two runs of the sieves 5 and 6. It is essential that the felt and the sieve do not interlace and that they revolve separately. Each felt track 3 and 4 then ls guided over its own rolls 8 and 9, while the sieve tracks 5 and 6 are independently guided over other deflect-ing rolls 10 and 11 in the equlpment. It follows therefore that the felt and sleve tracks do not pass through the equipment as a unit, rather they come into contact only in the region of the com-pression rolls 1 and 2. The sieve tracks 5 and 6 and the felt tracks 3 and 4 therefore are guided separately. The surface topography of the rolls 1 and 2 in the direction of motion of the sieve is known. What is essential is that the capillary suction capacity of the felt tracks be from ten to a thousand-fold that of the sieves.
Figure 2 shows a cross-section of this equipment, denoting by 12 the grooving in the upper roll 1 and by 13 that in the lower roll 2. As already indicated in Figure 1, the tracks oE felt 3 and 4 are located between the sieve tracks 5 and 6. The run of material 7 now is located between the sieve tracks 5 and 6 from which latter the water is to be removed. The run of material 7 is compacted by strong compression from the rolls 1 and 2 and the water in the capillaries is forced outwardly. The water pressed out of the run of material 7 is forced through the sieve tracks 5 and 6 and through the felt tracks 3 and 4 or moved through these into the grooves 12 and 13 of the compression rolls 1 and 2, from whence it can drain off.
Figure 3 shows a capillary dlagram of the dehydrating equip-ment . The water is pres sed out of the fine capillaries of the run of materlal 7 through the capillaries of larger diameter of the sleve tracks 5 and 6 or through those of the felt tracks 3 and 4 into the S~
grooves 12 and 13 of the rolls 1 and 2. Reverse suction of water in the pores of the felt tracks 3 and 4 into the run of material 7 is prevented during the decompression when leaving the compres-sion gap by the capillaries of larger diameter but smaller volume of the sieve tracks 5 and 6. A single-layer mesh screen or sieve was found to be especially practical as sieve tracks 5 and 6 be-cause a small storage volume supports dehydration.
After the water in the sieve capillaries has been drawn away by decompression from the felt- and the run of material, no water filaments can build up anymore in the capillaries of the sieve which are large compared to those of the run of material or of the felt, and the flow of water from the felt into the run of material is interrupted.
It will be obvious to those skilled in the art that many modifications may be made within the scope of the present inven-tion without departing from the spirit thereof, and the invention includes all such modifications.
This invention relates to equipment for dehydrating runs of fibrous ma~erial, the goods to be dehydrated being made to pass between two endless sieve-tracks and being pressurized by pairs of rolls or compression plates.
The purpose of this equipment is to improve the dehydration of runs of cloth and to achieve a more favorable pressure distribu-tion in the compression zone.
It is known to compress the goods to be dehydrated suffic-ientLy between the sieve or felt tracks in so-called double band ln presses between pairs of rolls or compression plates that as dry as possible a compressed cake will remain. The rolls used may be of smooth, grooved, perforated or of another surface character o so as to be able to drain the water against low flow resistance from the compression zone. A mesh sieve consists either of metal wire or of plastic filaments or yarns. The mesh sieve may have ;`
one or more layers depending upon the requirements. One require-ment is important, namely that the sieve tracks be of long life for appropriate dehydration and operating characteristics.
It is also known to use felt tracks made of woven or need-led felts or to use them in combination for dehydration. Such equipment is predominantly used when dehydrating fibrous mater-ials. It further has become known to place a wire mesh band underneath the sieve track to increase the transverse dehydration of the felts. In this latter case the run of fibrous material to be dehydrated passes onto the felt and is made to pass together with that felt and the sieve below the felt through the compres-sion gap.
5~3 When dehydrating with a sieve and a face roll alone, the pressure distribution leads to the destruction of the run o~ material, which obviously is a drawback.
When dehydrating using a sieve as the filtering means on a perforated or grooved roll~ the determining drawback is the high reverse-humidifying rate, that is, the flow of water drawn back from the grooves through the sieve into the run of material during the decompression at the compression roll exit.
There is a similar reverse-humidification when the run of fibrous material comes into contact with the track of felt and when a mesh sieve is placed underneath the felt toward the roll surface.
There is a further drawback in dehydration engineering if a felt is used as the filtering means and contacts the run of fibrous material hecause of the formation at the interface between the fibrous material and the filtering means or between the compression cake and the filtering means of an especially dense layer of fibers, that is, of a transition layer with very low permeability and correspondingly high pressure drop.
The invention addresses the problem of providing equipmen-t for dehydrating fibrous cloths or materials allowing enlargement of the capillary diameter for small capillary volume at the interface between the filter cake and the covering.
This goal is achieved in this invention in the provision of pressure means having groove means on the surface thereof in the direction of motion of the sieve track5, or perforations, or planar surfaces, including a track of felt inserted between the track of each sieve and a pressure means, and separate guides and deflecting rolls for the sieve tracks and the tracks of felt, the felt tracks having a capillary suction capacity which is from ten to a thousand-fold higher than that of the sieves.
rw/ - 2 -5t~8 In order to implement an improvement in dehydration, a further embodiment of the invention provides that the sieve and the roll surface evidence approximately the same capillary height of suction and that the tracks of felt have a capillary height of suc-tion which is from ten-fold to a thousand- fold higher ~
It becomes possible by this step that the capillary diameter for small capillar~ volume at the interface between the filter cake and the covering or filter means is substantially enlarged and that thereby reverse-humidlfication is effectively prevented.
The invention will be further illustrated by reference to the accompanying drawings, in which:
Figure 1 is a front view of a pair of compression rolls with sieve and felt tracks;
Figure 2 is a cross-section relating to Figure 1; and Figure 3 is a capillary diagram of the dehydration ~quip-ment .
Figure 1 shows a pair of compression rolls composed of an upper roll 1 and a lower roll 2. The axes of the rolls are in the same plane so that for the case of nearest approach of the sur-faces of the rolls, the maximum pressure will be exerted on the run of sieve, filter or material made to pass through the two rolls.
The upper track of felt 3 rests against the upper roll 1. Next, the track of sieve 5 lies against the upper roll, and in similar mannèr, the track of felt 4 and that of sieve 6 are applied against the lo~rer roll 2. The run of material 7 passes through the two runs of the sieves 5 and 6. It is essential that the felt and the sieve do not interlace and that they revolve separately. Each felt track 3 and 4 then ls guided over its own rolls 8 and 9, while the sieve tracks 5 and 6 are independently guided over other deflect-ing rolls 10 and 11 in the equlpment. It follows therefore that the felt and sleve tracks do not pass through the equipment as a unit, rather they come into contact only in the region of the com-pression rolls 1 and 2. The sieve tracks 5 and 6 and the felt tracks 3 and 4 therefore are guided separately. The surface topography of the rolls 1 and 2 in the direction of motion of the sieve is known. What is essential is that the capillary suction capacity of the felt tracks be from ten to a thousand-fold that of the sieves.
Figure 2 shows a cross-section of this equipment, denoting by 12 the grooving in the upper roll 1 and by 13 that in the lower roll 2. As already indicated in Figure 1, the tracks oE felt 3 and 4 are located between the sieve tracks 5 and 6. The run of material 7 now is located between the sieve tracks 5 and 6 from which latter the water is to be removed. The run of material 7 is compacted by strong compression from the rolls 1 and 2 and the water in the capillaries is forced outwardly. The water pressed out of the run of material 7 is forced through the sieve tracks 5 and 6 and through the felt tracks 3 and 4 or moved through these into the grooves 12 and 13 of the compression rolls 1 and 2, from whence it can drain off.
Figure 3 shows a capillary dlagram of the dehydrating equip-ment . The water is pres sed out of the fine capillaries of the run of materlal 7 through the capillaries of larger diameter of the sleve tracks 5 and 6 or through those of the felt tracks 3 and 4 into the S~
grooves 12 and 13 of the rolls 1 and 2. Reverse suction of water in the pores of the felt tracks 3 and 4 into the run of material 7 is prevented during the decompression when leaving the compres-sion gap by the capillaries of larger diameter but smaller volume of the sieve tracks 5 and 6. A single-layer mesh screen or sieve was found to be especially practical as sieve tracks 5 and 6 be-cause a small storage volume supports dehydration.
After the water in the sieve capillaries has been drawn away by decompression from the felt- and the run of material, no water filaments can build up anymore in the capillaries of the sieve which are large compared to those of the run of material or of the felt, and the flow of water from the felt into the run of material is interrupted.
It will be obvious to those skilled in the art that many modifications may be made within the scope of the present inven-tion without departing from the spirit thereof, and the invention includes all such modifications.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In equipment for dehydrating a run of fibrous material, the material to be dehydrated passing between two endless sieve tracks and being compressed by pairs of pressure means, the improvement comprising pressure means having groove means on the surface thereof in the direction of motion of the sieve tracks, or perforations, or planar surfaces, including a track of felt in-serted between the track of each sieve and a pressure means, and separate guides and deflecting rolls for the sieve tracks and the tracks of felt, the felt tracks having a capillary suction capacity which is from ten to a thousand-fold higher than that of the sieves.
2. Equipment according to claim 1 in which the sieves and groove means have approximately the same height of capillary suction.
3. Equipment according to claim 1 including using a single layer sieve with low storage volume as a track of sieve.
4. Equipment according to claim 1 in which said pressure means are pairs of rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19641567042 DE1567042A1 (en) | 1963-02-01 | 1964-01-30 | Method for the selective defense of Digitaria and Setaria |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT92678A AT351354B (en) | 1978-02-10 | 1978-02-10 | DEVICE FOR DEWATERING OF FIBER WALLS |
| ATA926/78 | 1978-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099588A true CA1099588A (en) | 1981-04-21 |
Family
ID=3503024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA320,921A Expired CA1099588A (en) | 1963-02-01 | 1979-02-06 | Equipment for dehydrating runs of fibrous material |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS54149078A (en) |
| AT (1) | AT351354B (en) |
| BR (1) | BR7900828A (en) |
| CA (1) | CA1099588A (en) |
| CS (1) | CS216655B2 (en) |
| DD (1) | DD141934A5 (en) |
| DE (1) | DE2901743C2 (en) |
| FI (1) | FI790400A (en) |
| HU (1) | HU177160B (en) |
| SE (1) | SE436210B (en) |
| SU (1) | SU961567A3 (en) |
| YU (1) | YU29479A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5549790A (en) * | 1994-06-29 | 1996-08-27 | The Procter & Gamble Company | Multi-region paper structures having a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same |
| US5556509A (en) * | 1994-06-29 | 1996-09-17 | The Procter & Gamble Company | Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same |
| US5580423A (en) * | 1993-12-20 | 1996-12-03 | The Procter & Gamble Company | Wet pressed paper web and method of making the same |
| US5837103A (en) * | 1994-06-29 | 1998-11-17 | The Procter & Gamble Company | Web patterning apparatus comprising a felt layer and a photosensitive resin layer |
| US5855739A (en) * | 1993-12-20 | 1999-01-05 | The Procter & Gamble Co. | Pressed paper web and method of making the same |
| US5861082A (en) * | 1993-12-20 | 1999-01-19 | The Procter & Gamble Company | Wet pressed paper web and method of making the same |
| US5871887A (en) * | 1994-06-29 | 1999-02-16 | The Procter & Gamble Company | Web patterning apparatus comprising a felt layer and a photosensitive resin layer |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT394064B (en) * | 1990-02-08 | 1992-01-27 | Andritz Ag Maschf | Process and apparatus for treating material webs |
| US5776307A (en) * | 1993-12-20 | 1998-07-07 | The Procter & Gamble Company | Method of making wet pressed tissue paper with felts having selected permeabilities |
| DE19845954A1 (en) * | 1998-10-06 | 2000-04-13 | Voith Sulzer Papiertech Patent | Simple, efficient de-watering machine following material production or finishing plant, includes bands for guidance, support and absorption, and exploits compression, absorption, suction, pneumatic and centrifugal effects |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE603334C (en) * | 1932-04-07 | 1934-09-29 | Johannes Wiebe | Device for squeezing the liquid out of mixtures of solid bodies and liquids, e.g. B. pulp webs |
| US3257268A (en) * | 1962-02-13 | 1966-06-21 | Mead Corp | Paper pressing process and apparatus utilizing water receiving belt |
| US3840429A (en) * | 1972-08-07 | 1974-10-08 | Beloit Corp | Anti-rewet membrane for an extended press nip system |
| GB1381360A (en) * | 1972-12-12 | 1975-01-22 | Valmet Oy | Paper machine multi-roll press assemblies |
-
1978
- 1978-02-10 AT AT92678A patent/AT351354B/en not_active IP Right Cessation
-
1979
- 1979-01-17 DE DE2901743A patent/DE2901743C2/en not_active Expired
- 1979-01-29 CS CS79628A patent/CS216655B2/en unknown
- 1979-02-02 SU SU792720106A patent/SU961567A3/en active
- 1979-02-02 SE SE7900943A patent/SE436210B/en unknown
- 1979-02-06 CA CA320,921A patent/CA1099588A/en not_active Expired
- 1979-02-07 FI FI790400A patent/FI790400A/en unknown
- 1979-02-07 HU HU79AI282A patent/HU177160B/en unknown
- 1979-02-08 DD DD79210911A patent/DD141934A5/en unknown
- 1979-02-08 YU YU00294/79A patent/YU29479A/en unknown
- 1979-02-09 JP JP1343479A patent/JPS54149078A/en active Pending
- 1979-02-09 BR BR7900828A patent/BR7900828A/en unknown
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5846379A (en) * | 1993-12-20 | 1998-12-08 | The Procter & Gamble Company | Wet pressed paper web and method of making the same |
| US5904811A (en) * | 1993-12-20 | 1999-05-18 | The Procter & Gamble Company | Wet pressed paper web and method of making the same |
| US5580423A (en) * | 1993-12-20 | 1996-12-03 | The Procter & Gamble Company | Wet pressed paper web and method of making the same |
| US5861082A (en) * | 1993-12-20 | 1999-01-19 | The Procter & Gamble Company | Wet pressed paper web and method of making the same |
| US5637194A (en) * | 1993-12-20 | 1997-06-10 | The Procter & Gamble Company | Wet pressed paper web and method of making the same |
| US5855739A (en) * | 1993-12-20 | 1999-01-05 | The Procter & Gamble Co. | Pressed paper web and method of making the same |
| US5609725A (en) * | 1994-06-29 | 1997-03-11 | The Procter & Gamble Company | Multi-region paper structures having a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same |
| US5837103A (en) * | 1994-06-29 | 1998-11-17 | The Procter & Gamble Company | Web patterning apparatus comprising a felt layer and a photosensitive resin layer |
| US5776312A (en) * | 1994-06-29 | 1998-07-07 | The Procter & Gamble Company | Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same |
| US5709775A (en) * | 1994-06-29 | 1998-01-20 | The Procter & Gamble Company | Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same |
| US5549790A (en) * | 1994-06-29 | 1996-08-27 | The Procter & Gamble Company | Multi-region paper structures having a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same |
| US5871887A (en) * | 1994-06-29 | 1999-02-16 | The Procter & Gamble Company | Web patterning apparatus comprising a felt layer and a photosensitive resin layer |
| US5556509A (en) * | 1994-06-29 | 1996-09-17 | The Procter & Gamble Company | Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2901743A1 (en) | 1979-08-16 |
| DD141934A5 (en) | 1980-05-28 |
| SE7900943L (en) | 1979-08-11 |
| HU177160B (en) | 1981-08-28 |
| AT351354B (en) | 1979-07-25 |
| FI790400A (en) | 1979-08-11 |
| YU29479A (en) | 1983-01-21 |
| BR7900828A (en) | 1979-09-04 |
| SE436210B (en) | 1984-11-19 |
| SU961567A3 (en) | 1982-09-23 |
| DE2901743C2 (en) | 1983-01-20 |
| JPS54149078A (en) | 1979-11-21 |
| ATA92678A (en) | 1978-12-15 |
| CS216655B2 (en) | 1982-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1099588A (en) | Equipment for dehydrating runs of fibrous material | |
| US4503113A (en) | Papermaker felt with a three-layered base fabric | |
| RU2361976C2 (en) | Perfected system for drying | |
| US3214326A (en) | Paper pressing method, felt and apparatus | |
| US3224928A (en) | Papermaking machine using a moving felt through a pressure forming slice and the same felt throughout the machine | |
| EP0839955A2 (en) | High bulk paper web | |
| US3929065A (en) | Wedge press for continuous dehydration of a web of fibrous material, such as fiberboard, especially | |
| KR950704114A (en) | POROUS SINTERED LAMINATE CONTAINING METAL FIBERS | |
| JPH07505454A (en) | Patterned spunlace fabric containing wood pulp and/or wood pulp-like fibers | |
| CA1295866C (en) | Flat structure permeable to liquid, and a method for manufacturing such a structure | |
| US5382327A (en) | Apparatus for thickening pulp and paper stock | |
| US3906853A (en) | Roller arrangement in presses for the removal of water from materials | |
| US4100018A (en) | Method and apparatus for forming a fibrous web | |
| US5204171A (en) | Press felt | |
| US2995186A (en) | Apparatus for making formed fibrous webs | |
| EP1788152B1 (en) | Shoe press belt and manufacturing method | |
| US3556940A (en) | Press assembly | |
| US3652390A (en) | Papermaking drainage fabric and stock inlet combination for producing even edged paper web | |
| GB2220885A (en) | Press felt | |
| SE9002985L (en) | Twin-wire press | |
| US2783689A (en) | Arrangement for removing of water in press section of machines for forming a felted pulp web | |
| CA1085229A (en) | Apparatus for continuously expressing liquid from a material | |
| CA1200427A (en) | Press for removing water | |
| CA2034956C (en) | Press felt | |
| JPS60143811A (en) | Felt filter cloth for belt press type dehydrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |