CN102421962A - Sizing flow system - Google Patents
Sizing flow system Download PDFInfo
- Publication number
- CN102421962A CN102421962A CN2010800210207A CN201080021020A CN102421962A CN 102421962 A CN102421962 A CN 102421962A CN 2010800210207 A CN2010800210207 A CN 2010800210207A CN 201080021020 A CN201080021020 A CN 201080021020A CN 102421962 A CN102421962 A CN 102421962A
- Authority
- CN
- China
- Prior art keywords
- degasser
- fiber suspension
- air mix
- mix facilities
- equipment
- 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.)
- Pending
Links
- 238000004513 sizing Methods 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 61
- 239000000725 suspension Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000005381 potential energy Methods 0.000 claims abstract description 24
- 238000007872 degassing Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 47
- 239000003085 diluting agent Substances 0.000 claims description 14
- 238000005360 mashing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 238000010790 dilution Methods 0.000 abstract description 8
- 239000012895 dilution Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/26—De-aeration of paper stock
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention relates to a device for feeding a fiber suspension (1) to at least one headbox (8) of a paper or board machine, comprising at least one dilution unit (5) in which the fiber suspension (1) is produced by mixing a concentrated fiber suspension (6) with a dilution liquid, wherein the dilution liquid is formed at least in part by white water (2) of the paper or board machine, the white water (2) being pre-degassed in at least one open channel (3) and then fed into the dilution unit (5) by means of a degassing unit (4). The expenditure should be reduced in that the potential energy of the fiber suspension (1) in the channel (3) is not higher than the potential energy of the fiber suspension (1) in the dilution device (5) and the pressure at the outlet of the degassing device (4) is between-0.3 and 1bar or in that the potential energy of the fiber suspension (1) in the channel (3) is higher than the potential energy of the fiber suspension (1) in the dilution device (5).
Description
Technical field
The present invention relates to a kind of equipment that is used for the conveying fiber turbid liquid at least one head box of paper machine or board machine; This equipment has at least one air mix facilities; In air mix facilities,, dense fiber suspension produces fiber suspension through being mixed with diluent liquid; Wherein, diluent liquid is at least partly formed by the plain boiled water of paper machine or board machine, and plain boiled water is outgased in advance in the groove of at least one opening and also then is transported in the air mix facilities through degasser.
Background technology
This method is used to paper machine or board machine delivery of fibers turbid liquid.Required for this reason slurry delivery system is known basically.Fiber suspension to be carried comprises coming most of fiber of the dense fiber suspension for preparing in the comfortable pulp preparation equipment.Dense fiber suspension for example has the concentration between 2.5 to 5% usually.Through sneaking into diluent liquid, the plain boiled water of paper machine and concentration is reduced to such value especially, this value helps moving the head box of paper machine.Although plain boiled water is applicable to the dilution task best, because high gas content existing problems, wherein, the major part of gas is an air.
The major part of gas is very rapidly overflowed, otherwise residual gas often must be removed with expending.Otherwise can reduce the quality of the paper of manufacturing with unallowable degree.
Known solutions is big degassing container, in this degassing container through vacuumizing the negative pressure that keeps constant, the evaporating pressure of the turbid liquid that this negative pressure is equivalent to outgas.
Therefore, in DE102004051327, advised a kind of and the said similar equipment of preamble claim 1.
Summary of the invention
Technical problem to be solved by this invention is to reduce the expense in this equipment.
According to the present invention; This technical problem solves thus; Promptly; The potential energy of the fiber suspension in the groove is not higher than the pressure in exit of potential energy and degasser of the fiber suspension in the air mix facilities between-0.3 to 1bar, and perhaps the potential energy of the fiber suspension in the groove is greater than the potential energy of the fiber suspension in the air mix facilities.
If the potential energy of the fiber suspension in the groove is higher than the potential energy of the fiber suspension in the air mix facilities, then can omit the pump between the assembly, this has obviously reduced expense.At this, potential energy difference has been confirmed the flow of fiber suspension basically.If potential energy difference is excessive, then must reduce overvoltage through choke valve or degasser, this is disadvantageous aspect energy.
Therefore, the highest difference in height that is equivalent to 8m of difference of the potential energy of the potential energy of the fiber suspension in the groove and the fiber suspension in the air mix facilities.
If the potential energy of the fiber suspension in the groove is not higher than the potential energy of the fiber suspension in the air mix facilities, then must arrange like this and/or the structure degasser, make to form the pressure between-0.3 to 1bar in its exit.
At this, have difference in height between groove and the degasser, but the build-up of pressure increase is the significant effects factor because its pump efficiency is answered through degasser.
If form pressure in the exit of degasser, then little pump should be set between degasser and air mix facilities less than-0.3bar.
Irrelevant with form of implementation, the pressure in the exit of degasser should be advantageously on the pressure of the porch of air mix facilities, make pressure differential be used for conveying fiber turbid liquid between these elements.For this reason advantageously, the outlet of degasser is arranged in the inlet top that plain boiled water flows into air mix facilities.In this way can be so that plain boiled water flows to air mix facilities from degasser under the situation that does not have delivery element fully.
Yet, under any circumstance, the pressure in the exit of degasser should be than the pressure of the porch of air mix facilities low maximum 0.5bar.In this case, the little pump between degasser and the air mix facilities can be born the conveying function of fiber suspension.
In order to adapt to the situation of equipment, but, should preferably carry out throttling to the stream of the fiber suspension between groove and degasser and/or degasser and the air mix facilities changeably also in order to optimize.
In addition advantageously, the inlet of degasser is arranged in the groove top.
For realizing the as far as possible effectively degassing, degasser should be connected with negative pressure source.Especially appropriate is that degasser has rotor rotated, in the inner chamber of rotor, carries plain boiled water, wherein, is extracted out by negative pressure source because centrifugal force accumulates in middle gas.
Air mix facilities can be designed as the container of sealing or opening.
After air mix facilities, fiber suspension should be transported to head box as far as possible through mashing pump in the system of sealing.
When degasser was static, the fluid level in the degasser dropped to the fluid level of air mix facilities.To carry the required liquid level difference of plain boiled water in order when degasser starts, producing, should before degasser puts into operation, to start mashing pump.
Particularly advantageous is this method to be applied in sieve speed in 800 to 1600m/min paper machine, because it is relevant strongly with sieve speed to be included in the amount of the air in the plain boiled water.
Description of drawings
Below specify the present invention in an embodiment.Device view has been shown in Fig. 1.
The specific embodiment
At this, fiber suspension 1 with common mode through of the mix generation of dense fiber suspension 6 with diluent liquid, and corresponding have basically operate in the desirable concentration in this position for the slurry case 8 of paper machine or board machine.Be known that head box concentration is in 0.5 to 2% the scope, normally 1%.
Be transported to diluent liquid in the air mix facilities 5 in an example shown from first plain boiled water 2, that is accumulate in the water in the forming area 10 of paper machine or board machine.This water is commonly called plain boiled water I, so that distinguish with the second plain boiled water II that accumulates in afterwards in the paper machine, second plain boiled water comprises the fine materials of much less.
Be known that this plain boiled water 2 (and other) and the air of considerable share and other possible mixed gases.Plain boiled water 2 is collected below the paper machine filter screen and discharges from the side.Flow out at this air that utilizes the groove 3 of opening that major part is comprised.However often meaningfully, in follow-up degasser 4, remaining gas share is removed (for example described in the DE102004051327) from plain boiled water 2.
Degasser 4 is configured to the container of cylindrical or taper, and is equipped with rotor 13 according to the present invention.Fiber suspension 1 arrives in the columniform basically inner chamber 14 of rotor 13 and is placed in rapid rotation.This principle is equivalent to full centrifuge surface.The gas that comprises moves inwardly owing to centrifugal force and passes through negative pressure source 7 from central sucking-off.
Centrifugal force can be at least 5 times of acceleration of gravity, preferred 10 times so big.Negative pressure source 7 need not be equivalent to the steam pressure of turbid liquid or near the negative pressure it.The common value of negative pressure is 0.8 to 0.9bar at this.
The inlet 16 of degasser 4 can be arranged between two parties or prejudicially.The liquid that provides through inlet is at first quickened along circumferential strongly, for this reason, for example can use the acceleration bar stupefied.Because centrifugal force, liquid leans against on the inwall of rotor 13, wherein, is included in gas wherein, and especially air is towards the central mobile of rotor 13.Usually form the division surface between the liquids and gases.
Gas can be drawn out of by means of negative pressure source 7 via the deaeration pipe of central authorities.
At this, it is transparent in the zone of outlet 15, the wall of rotor 13 to be designed to liquid, for example through in this zone, the hole being set.Outlet 15 is such arranged tangential advantageously, and making flows through the rotation of the liquid of the degassing causes in outlet 15, forming pressure.Hole in the wall of rotor 13 is big like this, to such an extent as to the sorting of the liquid that can not cause outgasing.
Degasser 4 can also set outer screening basket (Sortierkorb), can the plain boiled water of being extruded by radial outward 2 be divided into good slurry and impurity through this screening basket.
The plain boiled water 2 of the degassing directly feeds in the air mix facilities 5 through the outlet 15 of degasser 4, and this air mix facilities is designed to the container of opening at this.Because plain boiled water 2 is compared the littler fiber share of fiber suspension 1, can outgas easily.Yet, for the prerequisite of avoiding mass loss is that the dense fiber suspension 6 that is transported in the air mix facilities 5 only has gas content in a small amount at most.
Especially be suitable for as air mix facilities 5 at the mixing arrangement described in the DE10050109.At this importantly, realize the mixing of stream through dense fiber suspension 6 being sprayed into plain boiled water 2, wherein, the admission velocity of dense fiber suspension 6 is 3 to 15 times of flow velocity of plain boiled water 2 preferably.
Known have multiple paper machine or a board machine, and wherein, head box 8 not only is supplied to the fiber suspension of having mentioned 1, and is supplied to diluent liquid extraly, and this diluent liquid is seeing on the width of head box 1 that rationing is to each position.Therefore for example can influence, especially optimize the fibrolaminar horizontal profile that forms through head box 8.
Fig. 1 shows this possibility, and wherein plain boiled water 2 is not only as the diluent liquid that is used for dense fiber suspension 6.The plain boiled water 2 of part degassing in degasser 4 imports as diluent liquid in the rationing device 17 of head box 8 through dilution water pump 20, plain boiled water in the rationing device, be assigned with and in each position rationing in fiber suspension 1.
Other position is often arranged in the paper mill, on these positions, can use other diluent liquid through the said method degassing.
When furnish paper machines, connect last sorting level 18 usually in head box 8 fronts, get into head box so that prevent impurity, said impurity disturbs the operation of head box 8 or paper machine.
As above above-mentioned, this sorting function also can be implemented in same device with degassing function in combination.
After leaving air mix facilities 5, fiber suspension 1 through mashing pump 9 in closed system the container or the groove of opening (that is do not have) via cleaner 11, another pump 12 directs into head box 8 with sorting level 18.
The potential energy of the fiber suspension 1 in the groove 3 is higher than the potential energy of the fiber suspension 1 in the air mix facilities 5 at this.As a result, can omit the pump that is used for carrying in this zone plain boiled water 2, this has significantly reduced cost.Yet energy difference can not be excessive, because excess energy otherwise will be that the adjustable restricting element 21,22 of valve is eliminated through form.
In order to ensure also can be between degasser 4 and air mix facilities 5 under the situation that does not have extra pump conveying fiber turbid liquid 1, the pressure at outlet 15 places of degasser 4 is on the pressure at inlet 19 places of air mix facilities 5.In addition, the outlet 15 of degasser 4 is arranged in inlet 19 tops that plain boiled water 2 gets into air mix facilities 5.
In inactive state, the liquid level level 2 in the degasser 4 is reduced to the liquid level level in the air mix facilities 5, therefore carries plain boiled water 2 described liquid level difference before degasser 4 puts into operation, to create once more.
Can be through before degasser 4 operations, the required degree of the decline of the liquid level in the air mix facilities 5 being realized liquid level difference with mashing pump 9.
Claims (16)
1. one kind is used for the equipment that conveying fiber turbid liquid (1) arrives at least one head box (8) of paper machine or board machine; This equipment has at least one air mix facilities (5); In air mix facilities,, dense fiber suspension (6) produces fiber suspension through being mixed with diluent liquid; Wherein, Diluent liquid is at least partly formed by the plain boiled water (2) of paper machine or board machine; Said plain boiled water (2) also then is transported in the air mix facilities (5) through degasser (4) by the preparatory degassing in the groove (3) of at least one opening, it is characterized in that, the potential energy of the fiber suspension (1) in the said groove (3) is not higher than the pressure in exit of potential energy and said degasser (4) of the fiber suspension (1) in the said air mix facilities (5) between-0.3 to 1bar.
2. one kind is used for the equipment that conveying fiber turbid liquid (1) arrives at least one head box (8) of paper machine or board machine; This equipment has at least one air mix facilities (5); In air mix facilities,, dense fiber suspension (6) produces fiber suspension (1) through being mixed with diluent liquid; Wherein, diluent liquid is at least partly formed by the plain boiled water (2) of paper machine or board machine, and said plain boiled water (2) is outgased in advance in the groove (3) of at least one opening and also then is transported in the air mix facilities (5) through degasser (4); It is characterized in that the potential energy of the fiber suspension (1) in the said groove (3) is higher than the potential energy of the fiber suspension (1) in the said air mix facilities (5).
3. equipment as claimed in claim 2 is characterized in that, the potential energy of the fiber suspension (1) in the said groove (3) and the potential energy of the fiber suspension in the said air mix facilities (5) are equivalent to the difference in height of 8m at most.
4. as the described equipment of one of aforementioned each claim, it is characterized in that the pressure in the exit of said degasser (4) is higher than the pressure that the inlet (19) of said degasser (5) is located.
5. like the described equipment of one of claim 1 to 3; It is characterized in that; The low at most 0.5bar of the pressure that the inlet (19) of the said air mix facilities of pressure ratio (5) that the outlet (15) of said degasser (4) is located is located, and between degasser (4) and air mix facilities (5), be furnished with pump.
6. like one of aforementioned each claim described equipment, it is characterized in that the said fiber suspension stream (1) between said groove (3) and the said degasser (4) is preferably changeably by throttling.
7. like one of aforementioned each claim described equipment, it is characterized in that the fiber suspension stream (1) between said degasser (4) and the said air mix facilities (5) is preferably changeably by throttling.
8. like one of aforementioned each claim described equipment, it is characterized in that the inlet (16) of said degasser (4) is arranged in said groove (3) top.
9. like one of aforementioned each claim described equipment, it is characterized in that the outlet (15) of said degasser (4) is arranged in inlet (19) top that said plain boiled water (2) gets into said air mix facilities (5).
10. like one of aforementioned each claim described equipment, it is characterized in that said degasser (4) is connected with negative pressure source (7).
11. equipment as claimed in claim 10 is characterized in that, said degasser (4) has rotor rotated (13), and said plain boiled water (2) is guided in the inner chamber of rotor, wherein, is taken away by negative pressure source (7) because centrifugal force collects in middle gas.
12., it is characterized in that the container that said air mix facilities (5) is designed to seal like one of aforementioned each claim described equipment.
13., it is characterized in that said air mix facilities (5) is designed to the container of opening like the described equipment of one of claim 1 to 11.
14., it is characterized in that said fiber suspension (1) is guided through mashing pump (9) at air mix facilities (5) afterwards like one of aforementioned each claim described equipment.
15. equipment as claimed in claim 14 is characterized in that, said mashing pump (9) makes fiber suspension (1) in closed system, be directed to head box (8).
16. one kind is used to move the method like claim 14 or 15 described equipment, it is characterized in that, before said degasser (4) puts into operation, starts mashing pump (9).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009020949.2 | 2009-05-12 | ||
| DE102009020949A DE102009020949A1 (en) | 2009-05-12 | 2009-05-12 | constant part |
| PCT/EP2010/053686 WO2010130493A1 (en) | 2009-05-12 | 2010-03-22 | Approach flow system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102421962A true CN102421962A (en) | 2012-04-18 |
Family
ID=42224439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800210207A Pending CN102421962A (en) | 2009-05-12 | 2010-03-22 | Sizing flow system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20120048495A1 (en) |
| EP (1) | EP2430234A1 (en) |
| CN (1) | CN102421962A (en) |
| BR (1) | BRPI1007639A2 (en) |
| CA (1) | CA2761661A1 (en) |
| DE (2) | DE202009018662U1 (en) |
| WO (1) | WO2010130493A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572636A (en) * | 2012-07-25 | 2014-02-12 | 托斯克科技股份公司 | System for producing a cellulose web from an aqueous suspension of cellulose fibers |
| CN104520503A (en) * | 2012-07-18 | 2015-04-15 | 福伊特专利有限公司 | Constant part for security paper |
| CN103572636B (en) * | 2012-07-25 | 2016-11-30 | 托斯克科技股份公司 | For being produced the system of cellulose web by the water slurry of cellulose fibre |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI121890B (en) * | 2009-06-08 | 2011-05-31 | Upm Kymmene Corp | A new type of paper and a process for making it |
| FI125818B (en) * | 2009-06-08 | 2016-02-29 | Upm Kymmene Corp | Method for making paper |
| CN103669086A (en) * | 2012-09-10 | 2014-03-26 | 上海东冠纸业有限公司 | Paper machine strongwhite water pool pipeline system low in energy consumption |
| DE102014004477A1 (en) * | 2014-03-28 | 2015-10-01 | All Farhan Bhola | "Device for regulating the pressure in a pipe network for receiving liquid" |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295151A (en) * | 1999-10-29 | 2001-05-16 | 沃依特·苏尔茨制纸业专利有限责任公司 | Method and apparatus for de-aeration of pulp suspension |
| DE102006027596A1 (en) * | 2006-06-14 | 2007-08-09 | Voith Patent Gmbh | Degassing a fiber suspension, especially in the pulp and paper industry, using a pressure sorter with a rotationally symmetric screen and a gas outlet comprises applying a vacuum to the gas outlet |
| US20070267156A1 (en) * | 2004-10-21 | 2007-11-22 | Voith Patent Gmbh | Method for Degassing and Supplying a Fibrous Suspension to a Headbox or a Filter Device and Degassing Device |
| DE102006036018B3 (en) * | 2006-08-02 | 2008-01-31 | Voith Patent Gmbh | Supplying fiber suspension, formed by diluting thick suspension, to pulp inlet of papermaking machine, by pumping suspension from pulp feed pump through sorting plant |
| EP1884591A1 (en) * | 2006-08-02 | 2008-02-06 | Voith Patent GmbH | Method for feeding a fibrous material suspension into a headbox |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10050109A1 (en) | 2000-10-09 | 2002-04-11 | Voith Paper Patent Gmbh | Preparation of a fiber suspension, as paper/cardboard pulp, has a mixing pipe for the main mixed suspension flow with an elbow where an additional suspension is injected with a bulking agent |
| DE10337944A1 (en) * | 2003-08-19 | 2005-03-17 | Voith Paper Patent Gmbh | Process to remove gas from fibrous suspension in paper or carton manufacturing assembly |
| DE102006033773A1 (en) * | 2006-07-21 | 2008-01-24 | Voith Patent Gmbh | Regulated supply process for fibrous suspension involves reducing pressure in flow direction by using at least one pulsation eliminator |
| FI122916B (en) * | 2007-04-03 | 2012-08-31 | Andritz Oy | Device for degassing in connection with a paper machine or the like |
| DE102007038089A1 (en) * | 2007-08-11 | 2009-02-12 | Voith Patent Gmbh | constant part |
-
2009
- 2009-05-12 DE DE202009018662U patent/DE202009018662U1/en not_active Expired - Lifetime
- 2009-05-12 DE DE102009020949A patent/DE102009020949A1/en not_active Withdrawn
-
2010
- 2010-03-22 WO PCT/EP2010/053686 patent/WO2010130493A1/en active Application Filing
- 2010-03-22 BR BRPI1007639-5A patent/BRPI1007639A2/en not_active Application Discontinuation
- 2010-03-22 CN CN2010800210207A patent/CN102421962A/en active Pending
- 2010-03-22 CA CA2761661A patent/CA2761661A1/en not_active Abandoned
- 2010-03-22 EP EP10709733A patent/EP2430234A1/en not_active Withdrawn
- 2010-03-22 US US13/319,929 patent/US20120048495A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295151A (en) * | 1999-10-29 | 2001-05-16 | 沃依特·苏尔茨制纸业专利有限责任公司 | Method and apparatus for de-aeration of pulp suspension |
| US20070267156A1 (en) * | 2004-10-21 | 2007-11-22 | Voith Patent Gmbh | Method for Degassing and Supplying a Fibrous Suspension to a Headbox or a Filter Device and Degassing Device |
| DE102006027596A1 (en) * | 2006-06-14 | 2007-08-09 | Voith Patent Gmbh | Degassing a fiber suspension, especially in the pulp and paper industry, using a pressure sorter with a rotationally symmetric screen and a gas outlet comprises applying a vacuum to the gas outlet |
| DE102006036018B3 (en) * | 2006-08-02 | 2008-01-31 | Voith Patent Gmbh | Supplying fiber suspension, formed by diluting thick suspension, to pulp inlet of papermaking machine, by pumping suspension from pulp feed pump through sorting plant |
| EP1884591A1 (en) * | 2006-08-02 | 2008-02-06 | Voith Patent GmbH | Method for feeding a fibrous material suspension into a headbox |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104520503A (en) * | 2012-07-18 | 2015-04-15 | 福伊特专利有限公司 | Constant part for security paper |
| CN103572636A (en) * | 2012-07-25 | 2014-02-12 | 托斯克科技股份公司 | System for producing a cellulose web from an aqueous suspension of cellulose fibers |
| CN103572636B (en) * | 2012-07-25 | 2016-11-30 | 托斯克科技股份公司 | For being produced the system of cellulose web by the water slurry of cellulose fibre |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2761661A1 (en) | 2010-11-18 |
| DE102009020949A1 (en) | 2010-11-18 |
| US20120048495A1 (en) | 2012-03-01 |
| EP2430234A1 (en) | 2012-03-21 |
| WO2010130493A1 (en) | 2010-11-18 |
| DE202009018662U1 (en) | 2012-07-16 |
| BRPI1007639A2 (en) | 2018-02-20 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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Application publication date: 20120418 |