CN102648316B - Roller shell - Google Patents
Roller shell Download PDFInfo
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- CN102648316B CN102648316B CN201080052910.4A CN201080052910A CN102648316B CN 102648316 B CN102648316 B CN 102648316B CN 201080052910 A CN201080052910 A CN 201080052910A CN 102648316 B CN102648316 B CN 102648316B
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- Prior art keywords
- functional layer
- roller shell
- roller
- filler
- fiber
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0233—Soft rolls
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- Rolls And Other Rotary Bodies (AREA)
Abstract
The present invention relates to a kind of roller shell for being especially applied in the counter roller in the calendering district (100) of paper machine, wherein, counter roller comprises first functional layer (34) with first surface and second surface, described first surface forms the circumferential surface of described roller shell, described second surface is opposite with described first surface, and wherein, counter roller comprises the second functional layer (33), its circumferential surface is close to the described second surface of described first functional layer (34), wherein, the material of described first functional layer (34) have relatively described second functional layer (33) material evenly composition.
Description
Technical field
The present invention relates to one to be particularly useful for manufacturing and/or refined fiber width, the roller shell of the calender roll of the machine of such as paper web.
Background technology
In paper surface, generation flatness and fineness is carried out in the calendering district of paper machine.In calendering district, under high pressure and generally also at high temperature guide on so-called hard calender roll, the surface of this hard calender roll is not only quite hard for paper web, but also design the has little roughness corresponding with the paper surface that will realize.Pressure is produced by the counter roller making paper web relative harder calender roll compress.The roller shell of counter roller is flexible, to be compressed by paper web plane earth relative harder calender roll.
In first section in calendering district, first surface in first smooth or calendering paper web two surfaces.In this region, counter roller is pressed onto on the not yet smooth and therefore coarse side of paper web, and thus, roller shell surface is subject to higher mechanical load.Consider the economical operation of paper machine, in order to ensure roller surface higher availability and life-span, the roller shell of the counter roller used in this section in calendering district must be equipped with corresponding wear-resisting surface for higher mechanical stability optimization.Corresponding mechanical stability and ABRASION RESISTANCE realize by filler and/or fiber being incorporated in the plastic material for the manufacture of the functional layer of roller shell.Functional layer is interpreted as the coating of roller, and this coating primary responsibility forms roll gap and the surface characteristic of roller in roll-gap region.
Then, in ensuing second section in calendering district, the second surface in two surfaces of smooth paper web.In this region, the lateral surface compressing of smooth mistake before the roller shell opposite web of counter roller.In order to not damage the surface quality of smooth paper side, the roller shell of the counter roller used in this section in calendering district is for surface characteristic optimization even and smooth as far as possible.For this reason, the functional layer of roller shell is such as made up of the plastic material with isotropic characteristics, that is, be not mixed into filler and fiber or mixing small amount and/or meticulousr filler and/or fiber.
But not enough or less amount of filler adversely affects the mechanical stability of roller shell and especially its scuff resistance.In addition, this roller shell is for owing to locally transshipping the cracking susceptible caused, and this cracking is such as because the deposition on roller surface or edge overload cause.In addition, due to less amount of filler, the crackle of generation is easy to spread to all directions.In addition, the local damage on roller shell surface causes damaged location place local temperature to raise, and this local temperature raises to be strengthened damaging further, and finally causes peeling off of roller case material.
Therefore, running paper machine economically to maintain, must preparing when using and there is the roller shell of different roller shell quality described above than using the more spare roll of the situation of only a kind of roller shell quality.
Summary of the invention
Therefore, obtain based on set forth contents value it is desirable that, provide a kind of roller shell for the counter roller of design ap-plication in second section in the calendering district of paper machine, this roller shell has mechanical stability more better than the traditional counter roller roller shell used in calendering section.
According to a kind of form of implementation, the roller shell for the counter roller used in the calendering district of paper machine comprises the first functional layer and the second functional layer.First functional layer has the first surface of the circumferential surface forming roller shell and the second surface opposed with first surface, and the second functional layer has the circumferential surface be close to the second surface of the first functional layer.At this, the material of the first functional layer there is the material of comparing the second functional layer evenly composition.
In another kind of form of implementation, the stock of the first and second functional layers is formed by polymer substrate, this polymer substrate is especially selected from epoxy resin, polyurethane, polyethylene, Merlon and polyether-ether-ketone, thus, can adjust the characteristic on roller surface in the larger context.
By another kind of form of implementation, in order to have roll extrusion in the paper surface compared with high-flatness and fineness, the first functional layer is not containing filler.
By another kind of form of implementation, in order to form the functional layer with larger ABRASION RESISTANCE, the first functional layer contains filler, and the mean particle size of this filler is less than the mean particle size of the filler be included in the second functional layer.
In another kind of form of implementation, the first functional layer has the amount of filler more less than the second functional layer, not damage fineness and the flatness of paper surface in paper surface during roll extrusion.
In another kind of form of implementation, the first functional layer and the second functional layer have fiber respectively, and wherein, the fiber share in the first functional layer is less than the fiber share in the second functional layer, to avoid forming unevenness on the surface at roller.
In another kind of form of implementation, the thickness of the first functional layer is less than the thickness of the second functional layer, is applied to the power in the first functional layer thus and is out of shape effectively to be absorbed by the second functional layer and therefore prevent the danger that the first functional layer overload and material peel off.
By another kind of form of implementation, the material composition of the second functional layer have gradually towards the direction of the second surface of the first functional layer evenly concentration, this concentration is substantially equivalent to the first functional layer concentration on its second surface on the interface of the second surface with the first functional layer.Thus, in the second functional layer or obtain the gradient of fiber and filer content between the second and first functional layer, this gradient guarantees that power transmission and distortion continue and be therefore transitioned into economically in the second functional layer.
In order to improve the adhesion of functional layer on roller of multilayer, in another kind of form of implementation, bearing bed is set between the second functional layer and roller core.
By a kind of form of implementation, the calender roll had as above-mentioned roller shell is used in the calendering district of paper machine, wherein, after removal first functional layer, is compressed, in first section in calendering district, use calender roll by the paper surface making roller relatively not yet smooth.
Another kind of form of implementation relates to a kind of method of roller shell of the counter roller for the manufacture of being applied in the calendering district of paper machine, it has step: with the Packed polymer wetting fibre width of mixing, around the web of fiber that the basalis winding resin surrounding roller main body infiltrated, hard-coating layer on the base layer, to make the second functional layer and to apply the first functional layer.If fiber content is less than 5 percents by volume in the polymer, then in casting process or coating process, this may containing fiber and/or filler, for the formation of the polymer-coated of the first functional layer in the second functional layer.
In addition, the coating of the first functional layer comprises step: with the Packed polymer wetting fibre width of mixing, around the second functional layer winding web of fiber of infiltrating of resin and the layer of hard-coating in the second functional layer, for making the first functional layer.
Accompanying drawing explanation
Further feature of the present invention obtains the explanation of embodiment by below in conjunction with accompanying drawing.Each feature can realize with form that is independent or that combine by form of implementation of the present invention.Referring to accompanying drawing, multiple embodiment of the present invention is described, wherein:
Fig. 1 shows the schematic diagram in the calendering district for paper machine in side view, and
The structure of elasticity calender roll has been shown in the partial cross-sectional view that Fig. 2 illustrates at roller surf zone.
Detailed description of the invention
Fig. 1 shows the multiple roll gap calender 100 for closing on the smooth paper surface of paper-making process end.Calender 100 has two sections 101 and 102 stacked in an illustrated embodiment.Be arranged in the first section 101 of top in the drawings, the first surface 11 of smooth paper web 10, be arranged on the second surface 12 of smooth paper web 10 in the second section 102 of below in the drawings.When being passed in roll gap (it is the gap between two rollers) that formed between hard calender roll 20 and elasticity calender roll 30, paper web 10 treats that even curface or side abut on the surface of hard calender roll 20.
Hard calender roll generally has the roller shell formed by metal alloy, in roller shell, imbedded hard material particle for improving case hardness.The surface roughness of this calender roller shell is one of factor determining the final paper flatness realized in calender 100.In addition, between hard and elasticity calender roll, roll gap is shaping, that is the shape of roll-gap region and the pressure distribution of roll-gap region inside are also very important.This shaping roller shell primarily of roller 30 is determined.
In first section 101 in the calendering district 100 of (not shown) paper machine, the same side of paper web 10 is always guided and is therefore flattened on the circumferential surface of hard calender roll 20.In this application, in order to consistent with the technical term generally used, cover face is called the surface of volume, and this volume is produced around the rotation of reference axis by function curve, and wherein, end face should not can be regarded as cover face.Turning to by also entering calendering district or the slewing rollers of guiding out from calendering district or bending roller 40 realize for guiding paper web of paper web 10.
In order to can the second side 12 in the second calendering section 102 in smooth two paper surfaces, paper web 10 between two calendering sections 101 and 102 is directed through the exchange roll gap formed by two elasticity calender rolls, to make the second paper surface 12 guide on the circumferential surface of hard calender roll in roll gap afterwards.In this calendering section 102, before the present opposite web in surface 10 of the roller shell of flexible counter roller 30, smooth side 11 compresses, and must be furnished with smooth and uniform surface, so that the planarization effects no longer making this side complete degenerates.Because coarse and uneven roller surface causes the pressure of small size in roll-gap region to change, the pressure change of this small size makes smooth paper surface 11 have imprinted pattern.
Therefore, this roller shell of elasticity calender roll used in the second section 102 of calender 100 is furnished with outer functional layer 34 as shown in Figure 2, surface that this outer functional layer 34 has material composition and less roughness as far as possible uniformly, that polish.The surface of this functional layer 34 preferably has the mean roughness being less than Ra=0.3.
Uniform especially functional layer 34 realizes by the roller case material of cast, wherein, especially uses polymer, such as epoxy resin, polyurethane, polyethylene, Merlon and polyether-ether-ketone for this reason.The advantage of cast roller shell is the isotropism of material and attainable unusual light and uniform roller shell are surperficial thus.But limit the machinery of functional layer and dynamic load capacity and the crackle produced in this layer is easy to rapid and spreads widely, because there is not or exist the crack arrest part of only little, fiber or coarse form of bio-carrier.
Therefore, in order to improve this situation, imbedded by filler in the polymer substrate of functional layer, this filler gives the higher elasticity of functional layer and mechanical stability.Oxide, carbide or nitride can be used as filler, such as silica, aluminium oxide, titanium dioxide, titanium carbide or titanium carbonitride, wherein, preferably trickle filler is imbedded in the functional layer 34 for the second calendering section 102, that is, dimensionally than for the functional layer 33 of the first calendering section 101 less, such as based on the filler of silica and/or titanium oxide.For the grain size of the filler of functional layer 34 or granular size preferably in the scope between 20 nanometers to 12 micron; wherein; filler particles is also evenly distributed in polymer substrate very much, makes that do not form the flatness of infringement paper surface 11, between filler and polymer substrate discontinuity of materials.Otherwise, for being formed in the functional layer 33 used in the first calendering section 101, use size to be the filler of 10 microns to the maximum.The filler share of functional layer 34 is generally less than the filler share of functional layer 33, and this functional layer 33 is designed for and contacts with not yet smooth paper surface.The share of filler is generally according to paper kind to be manufactured, and such as art paper or magazine paper are determined, and general between 2 to 20 percents by volume.
In addition, mechanical stability also can be improved additionally by interpolation fiber, such as, prevent at medium and small nylon fiber and/or the glass fibre damaging increase of roller shell.The fiber content with 1 to 5 percent by volume can be selected in this functional layer 34, obviously less than fiber content in the functional layer 33 of the first section 101 for calender 100.
In order to ensure the adhesion of functional layer 34 or 33 on calender roll 30, flexible roller shell 10 has the basalis 32 being called basic unit (Baselayer) in technical term, and the roller core 31 that this basalis 32 is placed on calender roll 30 sets up connection dynamically fixing between roller core and functional layer.The Packed resin infiltrate of basalis 31 is strengthened by fiber substantially, tool
composition, this resin infiltrate is wound onto on roller core, sclerosis and and then grinding-shaping.Usually, glass fabric is used for manufacturing basalis 32.
Be applicable to the mechanical stability of the functional layer of the resilient roller 30 of the second section 102 of calender 100 for improving further, by a kind of form of implementation, functional layer is designed to multilayer.In fig. 2, the elasticity calender roll 30 of the functional layer with this multilayer is shown.In an illustrated embodiment, functional layer is two-layer, is made up of with the second functional layer 33 be positioned at below it the first functional layer 34 of outside.
First functional layer 34 has two opposed cover faces, and wherein, the cover face of outside forms the outer peripheral face of elasticity calender roll 30 simultaneously.The circumferential surface of another cover face and the second functional layer 33 is adjacent, and is connected with clinging with it.Second functional layer 33 is arranged on for making functional layer stick to basalis 32 on roller core 31.
The structure of the second functional layer 33 is corresponding with composition to the structure for being used in the functional layer in the first section 101 of calender 100 with composition.This second functional layer is especially in scuff resistance and mechanical stability, and the stability aspect first for local overload is optimized, and make the damage size under damaged condition keep limited, and the possibility of the subsequent damage produced by the part occurred is less.In order to form the second functional layer 33, such as, can use crosslinked epoxy resin, this thin and/or thick filler used for epoxy resin and staple fibre are strengthened.The content of filler is preferably selected in the scope of the percent by volume of 10 to 30, and the content of staple fibre is selected in the scope of the percent by volume of 5 to 15.
Preferred use nylon fiber is as staple fibre.First functional layer 34 for the use optimization in the second section 102 of calender 100, that is, for realize and keep very smooth and uniform surface.In order to form the first functional layer, such as, can use crosslinked epoxy resin, imbed in the epoxy resin that this is crosslinked size be preferably less than 1 micron, trickle filler and staple fibre.Filer content value in the first functional layer 34 is preferably in the scope of the percent by volume of 2 to 20, and the content value of staple fibre is in the volume percent range of 0.5 to 12.Staple fibre is preferably made up of nylon fiber.
In addition, if the content of filler is more than 13 percents by volume, then the content of staple fibre is preferably less than 8 percents by volume.Equally, if the content of staple fibre is more than 8 percents by volume, then the content of filler is preferably less than 13 percents by volume.
By the optimize for the second calendering section 102 first functional layer 34 being coated in the second functional layer 33 of optimizing for the first calendering section 101, act on machinery in the first functional layer 34 and heat load is passed in the second more stable functional layer, improve the mechanical stability of the first functional layer 34 thus.Because better stability is transshipped in thus obtained, relative local, the possibility that the sandwich construction described in functional layer reducing elasticity roller shell peels off and the possibility of subsequent damage caused due to broken portion.
In another kind of form of implementation, the fiber content in the second functional layer 33 in the content of filler and granular size and its possible its outer edges region reduces more and more towards the first functional layer 34.By this gradually towards the transition of the first functional layer, the stress between the first and second functional layers reduces to minimum and the mechanical stability of the first functional layer is additionally improved.Transition gradually can be regarded as or be designed to independently, be arranged in intermediate layer between the first and second functional layers.But transition gradually also can extend in the major part of the second functional layer 33 or whole part, because this functional layer, as below set forth, the not smooth side contacts with paper web, but if desired only with not smooth side contacts.Under this application scenarios, do not worry that filler owing to gradually changing and fiber combine finally smooth result adverse influence.
The functional layer of flexible calendering roller shell generally has the thickness of about 5 to 15mm.In a kind of form of implementation, in the functional layer of bilayer, the thickness of the first functional layer 34 is less than the thickness of the second functional layer.Such as the first functional layer has the thickness of about 1 to 3mm, and the second functional layer has the thickness of 4 to 12mm.
Except comparing for except the higher mechanical stability of traditional roller shell of the second section 102 of calender 100, the functional layer of described multilayer also has these advantages: namely, after wearing and tearing in first section 101 of the first functional layer at calender, by a side compression not yet smooth for roller surface pressure opposite web can be recycled this roller.The quantity needed for maintaining the spare roll needed for calender operation can be reduced thus.Certainly, alternative as it, the first functional layer can also be changed after wear again in the second functional layer.
By a kind of form of implementation, in order to manufacture the second functional layer 33, with polymer, such as resin or the resin compound wetting fibre width that mixes with filler.Then, the web of fiber that this polymer infiltrated reels around the basalis holding roller main body.Afterwards, polymer is by heat and/or radiation effects sclerosis.
If the content of fibrous material in the first functional layer 34 is less than about 5 percents by volume, then this fibrous material is coated in this first functional layer in the mode similar to manufacture second functional layer, wherein, different filling kinds or amount of filler and polymer system is used according to form of implementation.Work hardening also by heat and/or radiation of this layer.
If the first functional layer has the fibrous material content being obviously greater than 5 percents by volume, then the first functional layer 34 is preferably at casting process or be applied in coating process in the second functional layer 33.
Certainly, the first and second functional layers also can be hardened together in a common operation.
Claims (13)
1. one kind for being applied in the roller shell of the counter roller (30) in the calendering district (100) of paper machine, comprise: the first functional layer (34), there is the second surface that first surface is arranged with relative described first surface, described first surface forms the circumferential surface of described roller shell, and second functional layer (33), its circumferential surface is close on the described second surface of described first functional layer (34), wherein, the material of described first functional layer (34) have relatively described second functional layer (33) material evenly composition, it is characterized in that, described first functional layer (34) has less roughness, the surface polished, described second functional layer (33) is high abrasion and mechanically stable, if and there is described first functional layer (34), then described counter roller (30) is placed in first section (101) of described calendering district (100), and when described first functional layer (34) wears away and described second functional layer (33) forms the outer surface of Kun cover, described counter roller (30) is then placed in second section (102) of described calendering district (100).
2., by roller shell according to claim 1, it is characterized in that, the stock of described first and second functional layers is made up of polymer substrate.
3., by roller shell according to claim 2, it is characterized in that, described polymer substrate is selected from epoxy resin, polyurethane, polyethylene, Merlon and polyether-ether-ketone.
4., by the roller shell described in claim 1 or 2, it is characterized in that, described first functional layer (34) does not comprise filler.
5., by the roller shell described in claim 1 or 2, it is characterized in that, described first functional layer (34) comprises filler, and the mean particle size of described filler is less than the mean particle size of the filler be included in described second functional layer (33).
6., by roller shell according to claim 5, it is characterized in that, described first functional layer (34) has the amount of filler than described second functional layer (33) less amount.
7. by roller shell described in claim 5, it is characterized in that, described first functional layer (34) and described second functional layer (33) have fiber respectively, and wherein, the share of fiber in described first functional layer (34) is less than the share of described fiber in described second functional layer (33).
8., by the roller shell described in claim 1 or 2, it is characterized in that, the thickness of described first functional layer (34) is less than the thickness of described second functional layer (33).
9. by the roller shell described in claim 1 or 2, it is characterized in that, the material composition of described second functional layer (33) have gradually towards the direction of the second surface of described first functional layer (34) evenly concentration, this concentration is substantially equivalent to the concentration on the second surface of described first functional layer (34) on the interface of the second surface of relatively described first functional layer.
10., by roller shell according to claim 1, it is characterized in that, between described second functional layer (33) and roller core (31), arrange bearing bed (32).
11. with the application of calender roll in the calendering district (100) of paper machine by the roller shell described in one of aforementioned claim, it is characterized in that, after described first functional layer (34) of removal, by by described calender roll (30) opposite web (10) not yet even curface compression, in first section (101) of described calendering district (100), use described calender roll (30).
12. 1 kinds of methods for the manufacture of the roller shell of counter roller, this counter roller is for being applied in the calendering district (100) of paper machine, the method comprises these steps: with mixed Packed polymer wetting fibre width, around the web of fiber that the basalis winding resin holding roll body infiltrated, the layer of hard-coating on described basalis, to make the second functional layer (33) and to apply the first functional layer (34), wherein, if fiber content is in the polymer less than 5 percents by volume, then may containing fiber and/or filler in casting process or coating process, for the formation of the polymer-coated of described first functional layer (34) on described second functional layer (33).
13. by method according to claim 12, comprise step: with the Packed polymer wetting fibre width of mixing, if and described fiber content is in the polymer greater than 5 percents by volume, the web of fiber then infiltrated around described second functional layer (33) winding resin and hard-coating to the layer on described second functional layer (33), to make described first functional layer (34).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009029695.6 | 2009-09-23 | ||
| DE200910029695 DE102009029695A1 (en) | 2009-09-23 | 2009-09-23 | roll cover |
| PCT/EP2010/061268 WO2011035969A1 (en) | 2009-09-23 | 2010-08-03 | Roller covering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102648316A CN102648316A (en) | 2012-08-22 |
| CN102648316B true CN102648316B (en) | 2015-09-09 |
Family
ID=42813080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080052910.4A Active CN102648316B (en) | 2009-09-23 | 2010-08-03 | Roller shell |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2480717A1 (en) |
| CN (1) | CN102648316B (en) |
| DE (1) | DE102009029695A1 (en) |
| WO (1) | WO2011035969A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012205206A1 (en) * | 2012-03-30 | 2013-10-02 | Voith Patent Gmbh | roll cover |
| DE102012205227B3 (en) * | 2012-03-30 | 2013-04-11 | Voith Patent Gmbh | Process for producing a roll cover and roll cover |
| DE102012205221A1 (en) * | 2012-03-30 | 2013-10-02 | Voith Patent Gmbh | roll cover |
| DE102012207095A1 (en) * | 2012-04-27 | 2013-10-31 | Voith Patent Gmbh | Roller and method for its production |
| WO2014184064A1 (en) * | 2013-05-17 | 2014-11-20 | Voith Patent Gmbh | Roller for a machine for producing, further processing and/or finishing a fibrous material web |
| CN106661838B (en) * | 2014-07-28 | 2019-07-23 | 福伊特专利有限公司 | It is used to prepare or the method for making roller, roller and function drum layer |
| JP6857743B2 (en) * | 2017-10-17 | 2021-04-14 | Ｔｍｔマシナリー株式会社 | Heating roller and spinning and drawing equipment |
| DE102018120559A1 (en) * | 2018-08-23 | 2019-07-04 | Voith Patent Gmbh | Method for processing a roll cover |
| CN113106671B (en) * | 2021-03-31 | 2023-03-24 | 广东溢达纺织有限公司 | Roller, manufacturing method thereof and roller assembly |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5936133B2 (en) * | 1979-08-10 | 1984-09-01 | 山内ゴム工業株式会社 | Polyurethane rubber roll and its manufacturing method |
| FI111025B (en) * | 1997-05-30 | 2003-05-15 | Metso Paper Inc | A roll having a thermoplastic coating, a method of making the roll, a composition of a thermoplastic surface coating, a calendering process using rolls with a thermoplastic coating of the invention, and a paper / board made by the rollers |
| DE19914709B4 (en) * | 1999-03-31 | 2010-04-29 | Voith Patent Gmbh | Roller, in particular for smoothing paper webs, and method for producing such a roller |
| DE19914710A1 (en) * | 1999-03-31 | 2000-10-05 | Voith Sulzer Papiertech Patent | Elastic roller and method of making it |
| DE19919569B4 (en) * | 1999-04-29 | 2011-07-07 | Voith Patent GmbH, 89522 | Elastic roller and method for producing such |
| US6206994B1 (en) * | 1999-07-28 | 2001-03-27 | Advanced Materials Corporation | Method and apparatus for covering a metal roll core with a polymeric material preferable a high performance thermoplastic material |
| EP1072725B1 (en) * | 1999-07-28 | 2004-09-29 | Advanced Materials Corporation | Method and apparatus for applying a polymeric coating to a generally cylindrical roll core for calendering |
| DE10046055A1 (en) * | 2000-09-18 | 2002-03-28 | Voith Paper Patent Gmbh | Elastic roller |
| DE10221172A1 (en) * | 2002-05-13 | 2003-12-04 | Voith Paper Patent Gmbh | Elastic smoothing roller and method for producing such |
| DE102004025116A1 (en) * | 2004-05-21 | 2005-12-08 | Voith Paper Patent Gmbh | Fiber composite roll cover for machines processing flat materials comprises a compound whose composition varies in different areas |
-
2009
- 2009-09-23 DE DE200910029695 patent/DE102009029695A1/en not_active Withdrawn
-
2010
- 2010-08-03 WO PCT/EP2010/061268 patent/WO2011035969A1/en active Application Filing
- 2010-08-03 CN CN201080052910.4A patent/CN102648316B/en active Active
- 2010-08-03 EP EP10740615A patent/EP2480717A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP2480717A1 (en) | 2012-08-01 |
| CN102648316A (en) | 2012-08-22 |
| WO2011035969A1 (en) | 2011-03-31 |
| DE102009029695A1 (en) | 2011-03-31 |
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