CN1738941B - Press section in a paper or board machine - Google Patents
Press section in a paper or board machine Download PDFInfo
- Publication number
- CN1738941B CN1738941B CN200380102937.XA CN200380102937A CN1738941B CN 1738941 B CN1738941 B CN 1738941B CN 200380102937 A CN200380102937 A CN 200380102937A CN 1738941 B CN1738941 B CN 1738941B
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- Prior art keywords
- nip
- press section
- press
- paper web
- roll
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- 239000004744 fabric Substances 0.000 claims abstract description 53
- 230000018044 dehydration Effects 0.000 claims description 19
- 238000006297 dehydration reaction Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 238000009499 grossing Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000004663 powder metallurgy Methods 0.000 claims description 4
- 239000000123 paper Substances 0.000 description 30
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 210000000481 breast Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof
- D21F3/045—Arrangements thereof including at least one extended press nip
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- Paper (AREA)
Abstract
The invention relates to a press section in a paper or board machine, in which press section the transfer of a web (W) is accomplished as a closed draw through the press section and which press section is provided with at least three separate press nips (N1, N2, N3), dewatering in the first nip of said nips taking place on two sides. The closed draw of the web (W) through the pres s section is accomplished as a substantially straight run and that the press nips each have their own fabric loops (20, 21; 30; 40, 41), that the nips (N2, N3) following after the first nip (N1) have one water-receiving fabric (30, 40), which is placed in the nip (N2, N3) on the opposite side of the web (W) with respect to the other nip in the running direction of the web in the machine.
Description
Technical field
The present invention relates to the press section in a kind of paper machine or the board machine, wherein, at this press section, as a stretching closely by this press section, finish transmission to a paper web, this press section is provided with the nip of at least three separation, and the dehydration of carrying out in first nip of described nip occurs in both sides.
The present invention relates to a kind of paper machine or board machine with at least one forming section, a press section and a drying section, wherein this press section is provided with separative nip (press nip).In this application, the nip of separation is meant a kind of like this nip, and wherein relative extrusion only defines a nip.The nip that separates can be a roll nip or a prolongation nip.The relative position of the nip that separates is the squeezing (press) with a breast roll, and wherein this breast roll has formed nip with at least two other rollers.
Background technology
Finnish patent application 990557 discloses a kind of a kind of method and apparatus that is used to handle paper web and board web.Fig. 4-Fig. 6 shows some examples of the surface properties of paper web being controlled and be applicable to level and smooth (smoothing) nip with chemical substance.In the embodiment that these are enumerated, under the second and the 3rd nip (nip), utilized the conveyer belt of polyphone.Because dehydration is carried out at the both direction of first nip, upwards carry out at second nip, and on the 3rd nip, do not dewater, therefore dehydration is not symmetrical, but because band is positioned at the both sides of this paper web (web), paper web can be steadily.Therefore,, can not increase drying solid yet, thereby increase the total length of this paper machine even the 3rd nip among these embodiment has improved the surface properties of paper web.
Finnish patent 95610 discloses a kind of press section that is provided with the paper machine of german press.Paper web is subjected to closely and has the stretching of support force during by this press section, this press section comprises at least two continuous separation nips, dehydration to paper web is carried out at the first described nip at least, preferably between the press fabric (press fabric) of two recycle-waters.Back nip in the press section is a level and smooth nip, and it separates with last nip, does not carry out actual dehydration therein.The conveyer belt of this paper web by not absorbing water basically, be conveyed through this level and smooth nip from last dehydration nip, it is straightaway basically, behind level and smooth nip, continue to advance with identical direction by this, in this is advanced, some of paper web can be compensated by the speed difference of this conveyer belt along the elongation of machine direction, and wherein this elongation occurs in this level and smooth nip.
United States Patent (USP) 6,210,530 disclose a kind of press section and a kind of method of pressing (shoepress) to squeeze with the boots of different length.Fig. 2 shows an embodiment who comprises three boots pressure unit, wherein this paper web is at first by being arranged at a counter roll (counter roll) below (promptly, be positioned at this paper web below) first and second boots press the unit, and the 3rd boots are pressed on the top of a counter roll, i.e. the top of this paper web.
Finnish patent application 981089 discloses a kind of press section of paper machine, it has used one or more nips, this is waited to squeeze paper web and stretches closely basically by this nip as one, wherein press section has the nip that at least one is provided with two suction press felt (press felt), by this nip, this paper web is traveling between this squeezing felt-cloth, and after above-mentioned nip, this paper web is separated from a squeezing felt-cloth, and further stretch closely as one basically, be passed to by other squeezing felt-cloth and support.Last nip of this press section is one and prolongs nip zone (extended nipzone), one of them roller is a shoe roll with hose shell (hose shell) and press shoe configuration, and another roller is a press suction roll with a suction district.This paper web is by the last prolongation nip zone between these two suction press fabrics, and at this last prolongs after nip zone, paper web is directly separated from a press fabric, and be transmitted under the vacuum that in the suction district of described press section roller, exists auxiliary, under the situation that does not need again humidification, follow the press fabric that is arranged on described press suction roll side, and this paper web is on this back press fabric, be sent to as tight stretching on the dry net (wire) or equivalent of the dry fabric that is positioned at this press section rear, when suction roll transmits, this paper web is transmitted on this dry net or equivalent, or is transmitted by equivalent arrangements.
Finnish patent application 961518 discloses the press section geometry, the press section that wherein is provided with the tight stretching of the paper web in papermaking or the board machine comprises upward fabric of one first suction, this paper web on the suction district of a pick-up roller is sent on it on the net from picking up of pickup point, this pickup point is positioned at after its suction roll, and have a net driven roller (wire drive roll) thereafter, the backhaul of this net is from this net driven roller.This press section comprises the nip that one or two is continuous, and it is setting-out from this paper web, and between this nip, this paper web has stretching fully closely, makes it always by a fabric-supported.The nip of this removal water is so-called prolongation nip, and its expressing zone is longer than the expressing zone of sharp roll nip basically, and all nips also are provided with two suction press fabrics in addition, makes moisture wherein remove substantially symmetrically by two surfaces of paper web.In addition, the embodiment shown in Fig. 1,2 and 3 has utilized lighter load to transmit the district, and this transmits the district and is limited by a pressure roller, and this pressure roller has a concave surface and is arranged in the upper wire loop, together with one first drying or equivalent.
A known problem of press section in the prior art is that absorption is asymmetric, it produces reason is the variation of composition/structure on thickness direction of paper web, in press operation each time, because some fines and the packing material of this paper web are soaked by moisture, moisture is not removed in both direction equivalent.Fines is accumulated in dehydration this paper surface part than the strong position place.This problem also can be affected at a wet end, but this squeezing is last part that anhydrates, and in fact this problem is affected thus.Even in good paper, the fines in this intermediate layer tails off, but in the both sides of paper web, has the fines of equivalent to move and stick on this surface.
Aspect surface topography, in the press section with tight stretching in modern age, in the time of on being applied to printing paper, adsorptivity and its asymmetry of printing leak source and upper and lower surface are its significant defectives.When speed increases, when making it surpass 2000 meters/minute, closely be stretching in speed potential and efficient aspect a large amount of mobile benefits is provided.An object of the present invention is to further develop press section, it has a stretching closely, and is suitable for surpassing 1800 meters/minute, preferably surpasses 2000 meters/minute speed, does not wherein have the problem of above-mentioned surface topography and suction symmetry aspect.
Summary of the invention
An object of the present invention is to provide the press section of a kind of paper machine and board machine, it can preferably surpass under 2000 meters/minute the speed in the speed that surpasses 1800 meters/minute, optimizes surface topography and absorption.
Reach the purpose that proposes subsequently to achieve these goals, according to the press section that the invention provides in a kind of paper machine or the board machine, wherein, at this press section, as a stretching closely by this press section, finish transmission to a paper web, this press section is provided with the nip of at least three separation, the dehydration of carrying out in first nip of described nip occurs in both sides, is to finish as straight substantially advancing by this press section to stretching closely of this paper web, and each nip has its fabric circulation separately, nip after first nip has a water absorbing fabric, it is with respect to along other nip on the direct of travel of this paper web in the machine, be arranged on the opposite side of this paper web on the nip, in the nip after first nip, in so-called level and smooth or smoothing nip, this paper surface of a side relative with this water absorbing fabric is set to or is pasting a flat roll or pasting a conveyer belt and smoothed.
In the press section in paper machine according to the present invention or board machine, stretching closely (closed draw) by this press section is advanced basically straightly, and, this press section comprises the nip of at least three separation, and nip is each other without any common fabric circulation (fabric loops).
In press section according to the present invention, this first nip at the direct of travel of this paper web is a roll nip or a press suction roll nip, preferably to surpass 1800 meters/minute move than low velocity, but, can preferably select to use a prolongation nip when speed surpasses 2000 meters/minute and during when the dehydration increase in demand.Can imagine, be under the situation at a high speed, can use all nips to be the prolongation nip, and on the other hand, be under the situation of low speed, can only use roll nip at three above nips at three nips.Each of following two nips only has a water absorbing fabric, and it is arranged on the opposite side of the paper of each nip with respect to other nip along machine direction.In described follow-up nip, the both sides of this paper web pasting a smooth surface by once one side ground (one at a time) mechanically level and smooth/smoothing, this smooth surface can be a flat roll, is known as the breast roll setting, or conveyer belt.Relevant this point in this nip, is only being left the direction of this smooth surface, and promptly a side of water absorbing fabric is carried out the action that dewaters from this paper web.In continuous nip, the fines of the equivalent that influence absorbs be arranged on two surfaces near.
According to the present invention, as known to, in an embodiment, be sent to a drying section from a conveyer belt from this press section, wherein, smooth surface is positioned at the upper position of last nip of this press section, uses from the transmission of felt once.
In press section of the present invention, in being provided with the level and smooth/smoothing nip of flat roll or conveyer belt, having a suction press fabric and have a pressure roller at opposite side.Under lower load, can use a common pressure suction roll, under higher load, preferred use does not wherein need to increase the wall thickness of this suction roll by the press suction roll of powder metallurgic method manufacturing.For example, in the end under the effect of a level and smooth nip, guarantee that this paper web follows this felt, and do not need high capacity.Similarly, in roller/the prolongations nip of beginning, by high capacity, the suction roll of use powder metallurgy is realized the dehydration that strengthens.For example, a kind of press suction roll of being made by powder metallurgy has been described in Finnish patent 100422.This suction roll has guaranteed that this paper web is retained on the surface of porous fabric, makes it can not follow the smooth surface of the more viscosity of roller/conveyer belt.The smooth surface of this nip also mechanically influences the surface of this paper web, and the reduction of the smoothness that caused by coarse press fabric is had compensating action.The present invention also can use boots to press.
This press section according to the present invention provides the preferably surface properties relevant with printing for this paper web, and can be above 1800 meters/minute, and the higher speed that preferably surpasses 2000 meters/minute processes, and has higher efficient and have good moist characteristic simultaneously.
Also be convenient to both sides are adjusted according to press section of the present invention, this adjustment need be carried out on the streamline of paper machine, and it is mainly undertaken by press polish and applied chemistry material.The volume of possible loss can obtain keeping by lighter press polish afterwards in expressing process, did not absorb symmetry owing to do not need to proofread and correct, and it can further be optimized according to the surface properties of other expectation.On the other hand, when the dried solid of squeezing in the nip of Duoing in than prior art increases,, also can handle with short drying section although press section is elongated.
In a preferred embodiment of the present invention, three nips are arranged, this press section is passed through in the tight stretching of this paper web, and at first nip, dehydration occurs in both sides, and the paper web of symmetry can be provided thus.After first district, this paper web is delivered to one second nip from the surface of a top felt, and at second nip, dehydration occurs in below, the upper surface of this paper web or pasting a flat roll or pasting a smooth transfer belt.At the 3rd nip, dehydration occurs in the top, and the lower surface of this paper web is pasting a conveyer belt, and this paper web is sent to a drying section from fabric once.According to preferred supplementary features, a pressure roller is arranged on second nip after first nip, can realize enough material displacements at second nip thus, that is, fines is to the displacement of this paper web lower surface side.Meanwhile, because this paper web is pressed towards a smooth surface, the flatness of this paper web upper surface has improved.
Below, embodiments of the present invention will be described by referring to the drawings, but the present invention also not exclusively is confined to the content in the accompanying drawing.
Description of drawings
Figure 1A is the schematic diagram of one embodiment of the present of invention.
Figure 1B is the schematic diagram of the variant of first nip in the embodiments of the invention shown in Figure 1A.
Fig. 2 A is the schematic diagram of the second embodiment of the present invention.Fig. 2 B is the schematic diagram of an optional application of the embodiments of the invention shown in Fig. 2 A.
Fig. 3 is the schematic diagram of the third embodiment of the present invention.
The specific embodiment
In following accompanying drawing, corresponding each other parts use identical drawing reference numeral.
In Figure 1A, paper web (web) W that forming section forms be sent to be positioned at forming net (formingwire) go up reverse roll (reversing rolls) 11,12 before pickup point P position, this reverse roll is arranged on this forming net 10 inside.This pickup point P is formed between this forming net 10 and the roller 24, and this roller 24 is arranged in the circulation of the first suction press felt 20, and is provided with a suction section 24a, makes this paper web W by the pickup point P between this forming net 10 and this first squeezing felt-cloth 20.At this pickup point P, this paper web W separates with this forming net 10, and is passed to by 20 supports of this first squeezing felt-cloth.Afterwards, this paper web W is passed to one first nip N1 under the support of the lower surface of this first squeezing felt-cloth 20, this first nip N1 is limited by the pressure roller 22 and 23 of two concave surfaces, between them, to form a roll nip N1 or a press suction roll nip (Figure 1B), wherein this top roll 22 is the press suction roll that are provided with a suction district, and this another roller 23 is concave rolls.Relevant this point can be omitted felt suction roll 25.This paper web W advances to as this first nip N1 between the first suction press felt 21 of press fabric under first suction press felt 20 of last press fabric and the conduct.Dehydration to this paper web W occurs in the first nip N1, and makes moisture enter two squeezing felt-cloths 20,21.In the embodiment that uses press suction roll, also can remove moisture, and make it enter into suction roll by the suction district.
After this first nip N1, upward the vacuum among the suction district 25a of suction roll 25 has been guaranteed this paper web W and should have been gone up advancing of squeezing felt-cloth 20, and by the vacuum among the suction district 34a that transmits suction roll 34 down, this paper web W is separated from this first squeezing felt-cloth 20, make it stick on one second time press fabric 30, this second time press fabric also can be a squeezing felt-cloth, this webs W is sent to one second nip N2 on the surface thereon, and this second nip N2 is limited to a roller 32 and has between the press suction roll 33 of a suction district 33a.This suction district 33a of this suction roll 33 preferably has big fan-shaped (sector) and a higher vacuum, guarantee to have sticked on the felt of expectation at this paper web before the nip, and after this nip, follow this felt, make this paper web not follow this flat roll (smooth roll).After this, this paper web W is transmitted under the support of this second press fabric 30, and be sent to by subsequently last press fabric 40 by a suction district 44a who transmits suction roll 44 and support, and being sent to the 3rd nip N3, the 3rd nip N3 is limited between a prolongation pressure roller 42 and the counter roll 43.A conveyer belt 41 is arranged below, and by this conveyer belt, this cardboard W is sent to a transmission suction roll 54 with suction district 54a, and thus, this cardboard is sent on the dry net 50 of a drier section.Dehydration to this cardboard W occurs in the 3rd nip N3, and moisture enters into squeezing felt-cloth 40.
Embodiment shown in Fig. 2 A is mainly corresponding to embodiment shown in Figure 1A and variant thereof.But in the embodiment shown in Fig. 2 A, this second nip N2 forms and makes in second nip 32, has a upper conveyor belt 31, and as at the embodiment shown in Figure 1A, has a squeezing felt-cloth 30 as this time fabric 30.This paper web W is sent to by the lower surface at this conveyer belt 31 from this second nip N2 and transmits on the fabric 60, on this fabric 60, this paper web W is transmitted by a suction district 64a who transmits suction roll 64, and under the support of this felt 60, this paper web W is transmitted by the suction district 44a of this suction roll 44, thereby is supported by the last fabric 40 of the 3rd nip N3.
Except each nip N1, N2, N3 are formed one and prolong outside the nip, at the embodiments of the invention shown in Fig. 2 B mainly corresponding to the embodiment shown in Fig. 2 A.One of them roller is to prolong pressure roller 22; 33; 42, another roller is a counter roll 23; 32; 43.
Fig. 3 shows one embodiment of the present of invention, wherein paper web W is sent to a pickup point P from a forming net 10 of the forming section of reverse roll 11 fronts, at this pickup point, this paper web W is transmitted under the effect of the suction district 24a of a suction roll 24, thereby supported by the first suction press felt 20, and this paper web W is sent to one first nip N1, and this first nip is limited between two concave surface pressure rollers 22 and 23, perhaps is limited between a press suction roll and the concave surface pressure roller (as Figure 1B).Lower press felt 21 also absorbs water.Guarantee to adhere on the surface of this lower press felt 21 by the vacuum among the suction district 26a who transmits suction roll 26, and this paper web W transmits by the vacuum among the suction district 35a of a suction roll 35, thus by the second nip N2 one on squeezing felt-cloth 31 support.This second nip N2 forms of prolonging between a roller 32 and the counter roll 33 and prolongs nip.The following fabric of this nip N2 is a suction press felt 30.Under it supports, this paper web W is sent to one and transmits suction roll 44, transmit under the effect of vacuum 44a of suction district of suction roll 44 at this, this paper web W is sent to by a top felt 40 and supports, this paper web is sent to one the 3rd nip N3 thereon, and the 3rd nip is a level and smooth nip that is formed between roller 42 and 43.Roller 42 is press suction roll that are provided with suction district 42a.Dehydration occurs in the suction district 42a of this suction roll.Under the effect of the vacuum in the 74a of the suction district of suction roll 74, this paper web is sent to subsequently felt 70 from this felt 40.By this felt 70, this paper web be sent to subsequently, be formed on the level and smooth nip N4 between a press suction roll 73 and the suction roll 72.This suction roll 42 and 73 suction district 42a and 73a preferably have a big fan-shaped and higher vacuum, guarantee that this paper web is being adsorbed onto before this nip on the felt of this expectation, and after this nip, follow this felt, make this paper web not follow this flat roll.Afterwards, this paper web W is sent to a drying section, and is supported by a dry net 50, and relevant with Fig. 2 A with Figure 1A as mentioned part is described like that.The embodiment of Fig. 3 also can be embodied as only to be had before a nip in both direction suction is arranged on level and smooth nip N3 and N4, in this case, the first nip N1 can be one and limit the nip that forms by shoe roll (shoe roll) and concave roll, perhaps limit the nip that forms by a shoe roll and a press suction roll.
More than, described the present invention with regard to some preferred embodiments, but the present invention is not defined to above-mentioned details.
Claims (18)
1. the press section in paper machine or the board machine, wherein, at this press section, as a stretching closely by this press section, finish transmission to a paper web, this press section is provided with the nip of at least three separation, the dehydration of carrying out in first nip of described nip occurs in both sides, it is characterized in that, is to finish as straight substantially advancing by this press section to stretching closely of this paper web, and each nip has its fabric circulation separately, nip after first nip has a water absorbing fabric, it is with respect to along other nip on the direct of travel of this paper web in the machine, be arranged on the opposite side of this paper web on the nip, in the nip after first nip, in so-called level and smooth or smoothing nip, this paper surface of a side relative with this water absorbing fabric is set to or is pasting a flat roll or pasting a conveyer belt and smoothed.
2. press section as claimed in claim 1 is characterized in that, this press section is set to using above under 1800 meters/minute the speed of service.
3. press section as claimed in claim 1 is characterized in that, this press section is set to using above under 2000 meters/minute the speed of service.
4. press section as claimed in claim 1 or 2 is characterized in that, this first nip is roll nip or press suction roll nip.
5. press section as claimed in claim 1 or 2 is characterized in that, this first nip is a prolongation nip or a prolongation/suction roll nip.
6. press section as claimed in claim 1 or 2 is characterized in that, all nips all are to prolong nip.
7. as each described press section in the claim 1 to 3, it is characterized in that after this first nip, this press section comprises that one prolongs nip and two level and smooth nips.
8. press section as claimed in claim 1 is characterized in that, at least one of the roller in two nips in front is one and prolongs nip roll.
9. press section as claimed in claim 7 is characterized in that, at least one of the roller in two nips in front is one and prolongs nip roll.
10. press section as claimed in claim 7 is characterized in that the nip of this press section is roll nip.
11. as each described press section among the claim 1-3, it is characterized in that, smoothly/pressure roller of smoothing in the nip is the press suction roll that is manufactured by powder metallurgy.
12., it is characterized in that a pressure roller in a nip is the press suction roll that is manufactured by powder metallurgy as each described press section among the claim 1-3.
13., it is characterized in that at least one of the roller in nip is a press suction roll as each described press section among the claim 1-3.
14., it is characterized in that at least one nip after first nip is one and prolongs nip that promptly boots are pressed nip as each described press section among the claim 1-3.
15. as each described press section among the claim 1-3, it is characterized in that, after this first nip, on this paper web is set to be sent to subsequently following press fabric/felt from the surface of the last fabric of this first nip.
16., it is characterized in that at second nip, dehydration is downward as each described press section among the claim 1-3, and the upper surface of this paper web or pasting a flat roll or pasting a smooth transfer belt; At the 3rd nip, dehydration makes progress, and the lower surface of this paper web is pasting a conveyer belt.
17. as each press section among the claim 1-3, it is characterized in that, paper web is set to stretch closely as one, from this press section last down fabric send in cycles on the dry net of a drying section.
18. as each press section among the claim 1-3, it is characterized in that, be provided with a counter roll, do not having in the level and smooth nip of fabric, has a big fan-shaped press suction roll, this of this press suction roll is fan-shaped to be started from before this nip, and last till after this nip that thereon paper web of position is set to before this nip, during by this nip and by following a squeezing felt-cloth after the nip.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20022057A FI116400B (en) | 2002-11-19 | 2002-11-19 | Press section in a paper or cardboard machine |
| FI20022057 | 2002-11-19 | ||
| PCT/FI2003/000751 WO2004046459A1 (en) | 2002-11-19 | 2003-10-10 | Press section in a paper or board machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1738941A CN1738941A (en) | 2006-02-22 |
| CN1738941B true CN1738941B (en) | 2010-08-11 |
Family
ID=8564962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200380102937.XA Expired - Fee Related CN1738941B (en) | 2002-11-19 | 2003-10-10 | Press section in a paper or board machine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20060011319A1 (en) |
| EP (1) | EP1576232B1 (en) |
| CN (1) | CN1738941B (en) |
| AU (1) | AU2003274174A1 (en) |
| DE (1) | DE60328414D1 (en) |
| FI (1) | FI116400B (en) |
| WO (1) | WO2004046459A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005050281A1 (en) * | 2005-10-20 | 2007-04-26 | Voith Patent Gmbh | Press arrangement |
| DE102005050282A1 (en) * | 2005-10-20 | 2007-06-14 | Voith Patent Gmbh | Press arrangement |
| SI2037967T1 (en) | 2006-06-16 | 2017-04-26 | The Trustees Of The University Of Pennsylvania | Prostaglandin d2 receptor antagonists for treating androgenetic alopecia |
| DE102007021879A1 (en) | 2007-05-10 | 2008-11-13 | Voith Patent Gmbh | Pressing arrangement for e.g. paper web producing machine, has transfer band for transferring fibrous web between pressing nips, where band is formed by transfer filter band with permeability in range of preset cubic feet per minute |
| PL2072671T3 (en) * | 2007-12-20 | 2012-07-31 | Stora Enso Oyj | Arrangement for the press section of a web-forming machine and board or paper produced in such an arrangement |
| DE102008000151A1 (en) * | 2008-01-25 | 2009-07-30 | Voith Patent Gmbh | Device for producing and / or treating a fibrous web |
| DE102009047470A1 (en) * | 2009-12-03 | 2011-06-09 | Voith Patent Gmbh | Apparatus for treating a running paper, cardboard or other fibrous web |
| WO2016042198A1 (en) * | 2014-09-15 | 2016-03-24 | Upm-Kymmene Corporation | Process to manufacture low weight high quality paper for use as a support layer of a release! liner with a belt assembly |
| DE102016201333A1 (en) * | 2016-01-29 | 2017-08-03 | Voith Patent Gmbh | press section |
| DE102016201338A1 (en) * | 2016-01-29 | 2017-08-03 | Voith Patent Gmbh | Press |
| DE102018119686A1 (en) * | 2018-08-14 | 2020-02-20 | Voith Patent Gmbh | paper machine |
| CN111648152A (en) * | 2020-05-28 | 2020-09-11 | 湖北平安电工股份有限公司 | Production method of high-density mica paper |
| DE102020131965A1 (en) | 2020-12-02 | 2022-06-02 | Voith Patent Gmbh | paper machine |
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| EP0487483A1 (en) * | 1990-11-23 | 1992-05-27 | Valmet Paper Machinery Inc. | Method and device for dewatering of a paper web by pressing |
| WO1997013030A1 (en) * | 1995-10-03 | 1997-04-10 | Valmet Corporation | Method and device for removal of water out of a paper or board web by pressing |
| US6197156B1 (en) * | 1991-12-23 | 2001-03-06 | Valmet Paper Machinery, Inc. | Press section of a paper machine, in particular for printing paper qualities |
| US6210530B1 (en) * | 1996-12-13 | 2001-04-03 | Voith Sulzer Papiermaschinen Gmbh | Press section and method for pressing with different shoe press lengths |
| FI109481B (en) * | 2001-05-16 | 2002-08-15 | Metso Paper Inc | Paper manufacture method involves applying heat to web surface that is placed against water-impervious press surface in last press nip of press section, to evaporate water |
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| US2881670A (en) * | 1954-07-23 | 1959-04-14 | St Annes Board Mill Co Ltd | Apparatus and method for de-watering stock on a fourdrinier type paper or board-making machine |
| FI81854C (en) * | 1982-09-15 | 1990-12-10 | Valmet Oy | PRESS SPRING WITH PRESS SHEET I EN PAPER MACHINERY. |
| US5389205A (en) * | 1990-11-23 | 1995-02-14 | Valmet Paper Machinery, Inc. | Method for dewatering of a paper web by pressing using an extended nip shoe pre-press zone on the forming wire |
| FI100422B (en) | 1994-07-11 | 1997-11-28 | Metso Paper Inc | Preparation of roller |
| FI95610C (en) * | 1994-10-06 | 1996-02-26 | Valmet Paper Machinery Inc | Press section of a paper machine equipped with a compensating press |
| FI114227B (en) * | 1995-04-24 | 2004-09-15 | Metso Paper Inc | Paper machine with press section and dryer section |
| FI110440B (en) * | 1996-04-04 | 2003-01-31 | Metso Paper Inc | Transferring the web from the last press nip in the paper machine to the next drying section |
| FI111859B (en) | 1998-05-15 | 2003-09-30 | Metso Paper Inc | A press section of a paper machine where one or more long nipples are applied |
| FI107059B (en) * | 1998-07-01 | 2001-05-31 | Metso Paper Inc | Molding press portion of a paper machine and method for transferring a web from a former to a pressing portion |
| FI112873B (en) | 1999-03-12 | 2004-01-30 | Metso Paper Inc | Method and apparatus for treating a paper or cardboard web |
| FI991096A (en) * | 1999-05-12 | 2000-11-13 | Valmet Corp | A process for producing paper, in particular fine paper, and a paper machine line, in particular for producing fine paper |
| US6730192B1 (en) * | 1999-05-14 | 2004-05-04 | Metso Paper, Inc. | Method and machine for manufacturing printing paper or paperboard |
| FI116401B (en) * | 2000-02-22 | 2005-11-15 | Metso Paper Inc | Paper or paperboard machine with forming unit and press section |
| FI115307B (en) * | 2000-11-06 | 2005-04-15 | Metso Paper Inc | Press section in a cardboard machine fitted with prepress |
| FI20011291A (en) * | 2001-06-18 | 2002-12-19 | Metso Paper Inc | Process and paper machine for making coated paper |
| FI20020804A0 (en) * | 2002-04-26 | 2002-04-26 | Tamfelt Oyj Abp | Arrangement in the paper machine press section |
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2002
- 2002-11-19 FI FI20022057A patent/FI116400B/en not_active IP Right Cessation
-
2003
- 2003-10-10 US US10/535,431 patent/US20060011319A1/en not_active Abandoned
- 2003-10-10 WO PCT/FI2003/000751 patent/WO2004046459A1/en not_active Application Discontinuation
- 2003-10-10 CN CN200380102937.XA patent/CN1738941B/en not_active Expired - Fee Related
- 2003-10-10 AU AU2003274174A patent/AU2003274174A1/en not_active Abandoned
- 2003-10-10 DE DE60328414T patent/DE60328414D1/en not_active Expired - Lifetime
- 2003-10-10 EP EP03758152A patent/EP1576232B1/en not_active Expired - Lifetime
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| CN1047715A (en) * | 1989-06-02 | 1990-12-12 | 维美德-阿尔斯特罗姆有限公司 | The press section of paper, paperboard, pulp drying machine |
| EP0487483A1 (en) * | 1990-11-23 | 1992-05-27 | Valmet Paper Machinery Inc. | Method and device for dewatering of a paper web by pressing |
| US6197156B1 (en) * | 1991-12-23 | 2001-03-06 | Valmet Paper Machinery, Inc. | Press section of a paper machine, in particular for printing paper qualities |
| WO1997013030A1 (en) * | 1995-10-03 | 1997-04-10 | Valmet Corporation | Method and device for removal of water out of a paper or board web by pressing |
| US6210530B1 (en) * | 1996-12-13 | 2001-04-03 | Voith Sulzer Papiermaschinen Gmbh | Press section and method for pressing with different shoe press lengths |
| FI109481B (en) * | 2001-05-16 | 2002-08-15 | Metso Paper Inc | Paper manufacture method involves applying heat to web surface that is placed against water-impervious press surface in last press nip of press section, to evaporate water |
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| US 6197156 B1,说明书第5栏第50行至第9栏第36行. |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060011319A1 (en) | 2006-01-19 |
| DE60328414D1 (en) | 2009-08-27 |
| WO2004046459A1 (en) | 2004-06-03 |
| AU2003274174A1 (en) | 2004-06-15 |
| CN1738941A (en) | 2006-02-22 |
| EP1576232A1 (en) | 2005-09-21 |
| FI20022057A0 (en) | 2002-11-19 |
| FI116400B (en) | 2005-11-15 |
| FI20022057A (en) | 2004-05-20 |
| EP1576232B1 (en) | 2009-07-15 |
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