EP2185769A1 - Feutre comprimé - Google Patents

Feutre comprimé

Info

Publication number
EP2185769A1
EP2185769A1 EP08760767A EP08760767A EP2185769A1 EP 2185769 A1 EP2185769 A1 EP 2185769A1 EP 08760767 A EP08760767 A EP 08760767A EP 08760767 A EP08760767 A EP 08760767A EP 2185769 A1 EP2185769 A1 EP 2185769A1
Authority
EP
European Patent Office
Prior art keywords
press felt
nonwoven
filter layer
fibers
nonwoven structure
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.)
Withdrawn
Application number
EP08760767A
Other languages
German (de)
English (en)
Inventor
Hubert Walkenhaus
Robert Crook
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2185769A1 publication Critical patent/EP2185769A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts

Definitions

  • the invention relates to a press felt for use in a machine producing a fibrous web, in particular a paper, board or tissue machine, according to the preamble of patent claim 1.
  • Press felts are mainly used in the press section of a paper, board or tissue machines to transport the fibrous web with the target through the press nip to absorb the pressed-out of the fibrous web in the press nip water without this issue to the fibrous web again.
  • the quality and the dry content of the fibrous web after the press section in this case depends essentially on the surface condition, the water absorbency and the return capacity of the press felts used in the press section at the respective position.
  • the abovementioned properties can be positively influenced by introducing polymer particles into the nonwoven structure of the press felt.
  • the disadvantage is that the penetration depth of the polymer particles can not be adjusted specifically.
  • a press felt having a first surface provided by a nonwoven structure and a second surface opposite thereto, and a load-bearing base structure which is connected to the nonwoven structure and is arranged between the first and the second surface, as well as with particulate polymer material , which is penetrated from the first surface into the nonwoven structure in sections in the direction of the second surface and is attached to fibers of the nonwoven structure so that the press felt has a permeability of at least 5 cfm, in particular at least 10cfm.
  • the press felt according to the invention is characterized in that at least one filter layer is arranged in the nonwoven structure or at the interface between the nonwoven structure and the base structure, which is permeable to fluid and substantially impermeable to polymer material above a certain particle size.
  • the filter layer consequently forms an interface between the nonwoven structure and the base structure.
  • substantially impermeable it is meant herein that at least 98% of the polymer particles reaching the filter layer will adhere to the filter layer with a specific particle size and above
  • the filter layer may also be completely impermeable to the polymer particles having a specific particle size.
  • the second surface may be formed either by a free surface of the nonwoven structure or by a free surface of the base structure.
  • the filter layer therefore limits the penetration depth of the polymer material into the nonwoven structure from the first to the second surface as a function of the particle size of the polymer material.
  • the particulate polymer material is introduced from the first surface into the nonwoven structure by means of a fluid, for example in the form of at least one dispersion or with air support.
  • a fluid for example in the form of at least one dispersion or with air support.
  • the filter layer for fluid i. Liquid or gas or mixtures thereof
  • the polymer material can be transported by the fluid in the nonwoven structure and attach there in the area between the first surface and the filter layer, whereas the fluid passes the fulfillment of its transport function, the filter layer and thus easy out of the Felt can be removed, for example by vacuum support.
  • connection of the nonwoven structure to the base structure is preferably done by needling, the needling preferably taking place before the introduction of the particulate polymer material into the nonwoven structure.
  • the filter layer has an original thickness of 0.5 mm or less. This has the effect that the filter layer does not or only slightly influences the structure of the press felt. Under the original thickness, the thickness of the filter layer is to be understood, which has these prior to installation in the press felt.
  • At least one filter layer is a nonwoven layer, which is formed in particular by fibers with 3.3 dtex or less.
  • Such nonwoven layers are used in the prior art in press felts as a membrane to prevent the rewetting of the paper web and have the advantage that they are simple and inexpensive to produce.
  • the press felt has a reduced pore size. This means that in the region of this "needling point" a zone with locally increased fiber density extending in the thickness direction of the press felt predominates, and in the thickness direction above and below this zone there is a lower fiber density and thus an increased pore size.
  • non-woven layer filter layer within the press felt, i. within the nonwoven structure or at the boundary between nonwoven structure and base structure fibers with 3.3dtex or less arranged.
  • At least one filter layer is formed by 1, 7dtex fibers.
  • a preferred embodiment of the invention provides that fibers of at least one filter layer are fused together at mutual points of contact.
  • the fusion of the fibers takes place here preferably by the action of heat.
  • Such a fusion bonding process is referred to, for example, as "thermobonding".
  • the filter effect of the filter layer can be influenced by the size of the openings in the filter layer.
  • a possible influencing factor for the size of the openings in the filter layer designed as a nonwoven layer is the basis weight of the nonwoven layer.
  • a preferred embodiment of the invention provides that at least one filter layer has a basis weight in the range from 20 to 180 g / m 2 .
  • the filter layer formed by a nonwoven layer may comprise fibers of a plastic material.
  • PU fibers or PP fibers or PA fibers or mixtures of two or more of the aforementioned fibers are conceivable.
  • this nonwoven layer is formed only from PU fibers or only from PP fibers or only from PA fibers.
  • fibers are also conceivable, which are constructed of two materials, for example. From a higher melting and a lower melting material.
  • the fibers comprise natural materials.
  • a further embodiment of the invention provides that at least one filter layer is hydrophobic.
  • the fluid flow slows down. Reduction of the fluid flow facilitates the filtering process, the polymer particles can be more easily positioned in the structure over the filter layer.
  • At least one filter layer is formed by a sacrificial material, which can be dissolved out of the press felt after fixation of the polymer particles in the nonwoven structure.
  • a filter layer has the advantage that it does not affect the properties of the finished press felt.
  • At least one filter layer is formed by a sacrificial material, in particular thermoplastic PU, which in the fixation of Polymer particles has been melted in the nonwoven structure in the press felt. Since such a filter layer is melted in the fixing process, it is no longer recognizable as such in the finished felt, but only in the form of an increased proportion of molten thermoplastic PU in the press felt.
  • a sacrificial material in particular thermoplastic PU
  • At least one filter layer is formed by a layer in the nonwoven structure or the interface between the nonwoven structure and the base structure is treated so physically and / or chemically that it is permeable to fluid and for the polymer material from a certain particle size is substantially impermeable.
  • a plasma treatment of, for example, a surface of a nonwoven layer of the nonwoven structure is conceivable before a further nonwoven layer is applied over it so that the nonwoven structure as a result forms a filter layer in an intermediate layer.
  • At least one filter layer is a perforated film having a thickness of 0.5 mm or less. Films are particularly easy and inexpensive to produce. The particle size to be filtered can be easily adjusted by the size of the perforations.
  • a preferred embodiment of the invention provides that at least one of the filter layers has a thickness of 0.2 mm or less, in particular 0.1 mm or less.
  • the press felt comprises two filter layers, wherein the one of the filter layers for polymer material from a certain particle size and the other of the filter layers for polymer material from a different, smaller particle size is substantially impermeable.
  • An embodiment of the invention based thereon further provides that in the direction from the first to the second surface first the one and then the other of the filter layers is arranged.
  • the penetration depth of polymer material in the nonwoven structure is limited from a certain particle size and the other of the two filter layers, the penetration depth of polymer material in the nonwoven structure from another, smaller particle size.
  • the particulate polymer material comprises particles having different particle sizes, wherein in the production of the felt first small polymer particles and then larger polymer particles were introduced from the first surface into the nonwoven structure.
  • the particulate polymer material comprises particles having different physical and / or chemical properties. It is conceivable in this context to use particles with different melting point.
  • the process can be made very flexible, so that the particles not only get into the structure from one side and also alternate application is conceivable. This in combination with the most different filter media allows this high flexibility
  • a press felt produced according to the above embodiment larger and smaller polymer particles are then arranged above the one filter layer, ie in the region from the first surface to the one filter layer, whereas only smaller polymer particles are arranged between the one and the other filter layer.
  • a press felt which has a higher polymer content in the region between the first surface and the one filter layer than in the first Area between one and the other filter layer.
  • the press felt thus has a denser surface.
  • one possible embodiment of the invention provides that in the production of the felt, the particulate polymer material is introduced into the nonwoven structure in the form of at least one dispersion.
  • the dispersion may comprise water and the polymer particles.
  • the particles may also be thermoplastic or thermoset polymer particles or mixtures thereof.
  • the particle size is preferably in the range of 0.1-600 ⁇ m, preferably 1 -300 ⁇ m, particularly preferably 20-150 ⁇ m.
  • the polymer particles are fused intermittently with each other and in sections with fibers of the nonwoven structure by heat treatment after their introduction into the nonwoven structure, whereby a discontinuous and porous composite structure formed from the polymer particles and the fibers of the nonwoven structure bonded to the polymer particles.
  • the polymer particles thus partially impregnate fibers of the nonwoven structure and partially fill spaces between fibers of the nonwoven structure, whereby the porous composite structure is formed.
  • the heat treatment may cause a chemical reaction of the polymer particles, such as their crosslinking.
  • the nonwoven structure is formed by fibers of 6.7 dtex or more.
  • the nonwoven structure fibers in the range 17 to 600dtex, for example. 22 to 67dtex or 80dtex include. It is conceivable in this context that the nonwoven structure is formed by a plurality of nonwoven layers stacked on each other between the first and the second surface, wherein in particular at least one of the nonwoven layers of the nonwoven structure is formed by thicker fibers than another of the nonwoven layers.
  • the paper-side surface of the press felt is formed by the first surface with polymer particles, i. the surface which is contactable with the fibrous web and the second surface is the surface of the press felt which is engaged with the machine in
  • Fibrous web brought into contact surface (paper side) of the press felt in the nonwoven structure.
  • the surface of the press felt is formed by the second surface with polymer particles, which is brought into contact with the fibrous web and the first surface is the machine-side surface of the press felt, i. the surface that can be brought into contact with the machine.
  • the polymer particles are introduced into the nonwoven structure from the machine-contacting surface (machine side) of the press felt.
  • a further preferred embodiment of the invention provides that the polymer particles with fibers of the nonwoven structure in the nonwoven structure form a porous layer arranged below the paper-side surface, which is attached to the filter layer and which has a thickness of 1.0 mm or less, in particular 0, 7 mm or less.
  • the porous layer can assume the function of a layer which minimizes or prevents rewetting, so-called "anti-rewet layer.”
  • the thin layer can be formed by vacuum support after or during introduction of the polymer particles by virtue of the vacuum be sucked to the filter layer and attach there as a thin layer, so that between the first surface of the nonwoven structure and this porous layer, a portion of the nonwoven structure remains in which no polymer particles are attached to the fibers of the nonwoven structure.
  • the polymer Particles having a certain particle size and moreover penetrated from the first surface to the filter layer filtering this particle size in the nonwoven structure, wherein the concentration of these polymer particles decreases or increases over the depth of penetration or remains constant.
  • the load-bearing base structure is preferably formed by a textile fabric such as, for example, a fabric, a bundle of threads or a foil arrangement with optional reinforcing threads.
  • the group of threads may in this case comprise both machine direction (MD) and cross machine direction (CMD) oriented threads.
  • Figure 1 shows a first embodiment of a press felt according to the invention in
  • FIG. 2 shows a second embodiment of a press felt according to the invention in cross section
  • Figure 3 shows a third embodiment of a press felt according to the invention in
  • FIG. 4 shows a fourth embodiment of a press felt according to the invention in
  • FIG. 5 shows a fifth embodiment of a press felt according to the invention in
  • FIG. 1 shows a press felt 1 in cross-section.
  • the press felt 1 has a nonwoven structure 5 formed by a plurality of nonwoven layers 2 to 4, as well as a base structure 6 needled with the nonwoven structure 5 and designed as a fabric 6.
  • the nonwoven structure 5 comprises a first surface 7, which is provided by the free surface of the upper nonwoven layer 2 of the nonwoven structure 5.
  • the nonwoven layer 2 is formed by 17 dtex fibers 11.
  • the middle nonwoven layer 3 arranged between the upper nonwoven layer 2 and the fabric 6 is formed by 67 dtex fibers 16.
  • the second surface 8 of the press felt 1 is provided here by the free surface of the lower nonwoven layer 4.
  • a filter layer 9 is arranged, which is a nonwoven layer 9 with a thickness of 0.1 mm, which is formed by polyurethane fibers (PU fibers) with less than 1.7 dtex.
  • the PU fibers are fused together at their mutual points of contact.
  • the filter layer 9 has a basis weight in the range of 80 g / m 2 .
  • the filter layer 9 is according to the invention for fluid, so for example. Water and air, permeable and impermeable to polymer material from a certain particle size substantially. In the present case, the filter layer 9 is impermeable to particle sizes of 30 ⁇ m and more.
  • the lower nonwoven layer 4 of the nonwoven structure 5 is arranged, which is formed from fibers 15 with 22dtex.
  • the fabric 6 is connected to the nonwoven structure 5 and the filter layer 9 by needling.
  • a dispersion with water and particulate polymer material 10 was introduced from the first surface 7 into the nonwoven structure 5 and causes the polymer particles 10 to be penetrated from the first surface 7 in sections toward the second surface 8 and have attached to fibers 11 of the nonwoven structure 5.
  • the felt 1 was heat-treated, so that the polymer particles 10 in the non-woven structure 5 are fused with each other and with fibers 11 of the nonwoven structure 5 and form a composite structure.
  • the polymer particles 10 partially impregnate fibers 11 of the nonwoven layer 2 and partially fill spaces between fibers 11 of the Nonwoven layer 2, whereby the porous and permeable composite structure in the area of the nonwoven layer 2 is formed.
  • the unfused polymer particles 10 have a particle size in the range of 30-50 ⁇ m.
  • the present press felt 1 has a permeability of 50 cfm.
  • the penetration depth of the polymer particles 10 into the nonwoven structure is therefore limited to the upper nonwoven layer 2.
  • the polymer particles 10 are penetried from the first surface 7 to the filter element 9 filtering the polymer particles 10 into the nonwoven structure 5, the concentration of the polymer particles 10 in the upper nonwoven layer 2 remaining constant over the penetration depth. This has been achieved, for example, by the fact that during the introduction and then no vacuum support has taken place.
  • the paper-contacting surface 12 of the press felt 1 is formed.
  • FIG. 2 shows a second embodiment of a press felt 1 in cross-section.
  • the press felt 1 has a nonwoven structure 5 formed by two nonwoven layers 2 and 4, as well as a base structure 6 needled with the nonwoven structure 5 and designed as a fabric 6.
  • the nonwoven structure 5 comprises only an upper nonwoven layer 2, which is arranged in the Dar position of Figure 2 above the fabric 6, and a lower nonwoven layer 4, which is arranged in the illustration of Figure 2 below the fabric 6.
  • the two nonwoven layers 2 and 4 are similar in structure to those provided with the same reference numerals nonwoven layers of Figure 1.
  • the filter layer 9 ' is arranged at the interface between the upper nonwoven layer 2 and the fabric 6, which is a nonwoven layer 9 ' with a thickness of 0.1 mm, which by polyurethane fibers (PU fibers) with less than 2.2dtex is formed.
  • the PU fibers are fused together at their mutual points of contact.
  • the filter layer 9 ' has a basis weight in the range of 40 g / m 2 .
  • the filter layer 9 ' for fluid, so for example. Water and air, permeable and impermeable to polymer material from a certain particle size substantially.
  • the filter layer 9 ' is impervious to particle sizes of 50 ⁇ m and more.
  • the fabric 6 is connected to the nonwoven structure 5 and the filter layer 9 ' by needling.
  • a dispersion of water and particulate polymer material 10 ' is introduced from the first surface 7 into the nonwoven structure 5 and causes the polymer particles 10 to be potted from the first surface 7 in sections toward the second surface 8 and have attached to fibers 11 of the nonwoven structure 5.
  • the Felt 1 was followed by the Felt 1, so that the polymer particles 10 ' in the nonwoven structure 5 are fused together and with fibers 11 of the nonwoven structure 5 and form a composite structure.
  • the polymer particles 10 'in this case partially impregnate fibers 11 of the nonwoven layer 2 and partially fill spaces between fibers 11 of the nonwoven layer 2, whereby the porous and permeable composite structure in the region of the nonwoven layer 2 is formed.
  • the unfused polymer particles 10 ' have a particle size in the range of 60-100 ⁇ m.
  • the present press felt 1 has a permeability of 20 cfm.
  • the penetration depth of the polymer particles 10 ' into the nonwoven structure is therefore limited to the upper nonwoven layer 2, ie no polymer particles are present in the web Tissue 6 penetrates.
  • the polymer particles 10 ' are in this case from the first surface 7 to which the polymer particles 10' 'penetrates into the nonwoven structure 5, wherein the concentration of Polymerpartilel 10' filtering filter layer 9 increases in the upper fabric layer 2 over the penetration depth. This has been achieved, for example, by applying a vacuum on the side of the second surface 8 during the introduction and / or afterwards.
  • the paper-contacting surface 12 of the press felt 1 is formed.
  • FIG. 3 shows a third embodiment of a press felt 1 in cross-section.
  • components that are equal to those of the press felt of Figure 1, provided with the same reference numerals. In the following, essentially only the differences to the press felt of FIG. 1 will be discussed.
  • the press felt 1 has, as in the press felt of FIG. 1, a nonwoven structure 5 formed by the nonwoven layers 2 to 4.
  • the filter layer 13 is arranged at the interface between the lower nonwoven layer 4 and the fabric 6, which is a penetrated PU film 13 with a thickness of 0.06 mm.
  • the first surface 7 is provided by the free surface of the lower nonwoven layer 4.
  • the filter layer 13 is according to the invention for fluid, so for example. Water and air, permeable and impermeable to polymer material from a certain particle size substantially. In the present case, the filter layer 13 is impermeable to particle sizes of 150 ⁇ m and more.
  • the fabric 6 is connected to the nonwoven structure 5 and the filter layer 13 by needling.
  • a dispersion of water and particulate polymer material 10 " was introduced from the first surface 7 into the nonwoven structure 5 and causes the polymer particles 10 " to penetrate from the first surface 7 in sections toward the second surface 8 are and have attached to fibers 15 of the nonwoven structure 5.
  • the felt 1 was heat treated, so that the polymer particles 10 " in the nonwoven structure 5 are fused with each other and with fibers 15 of the nonwoven structure 5, thereby forming a composite structure
  • the polymer particles 10 " partially impregnate fibers 15 of the nonwoven layer 2 and partially fill spaces between Fibers 15 of the nonwoven layer 2, whereby the porous and permeable composite structure in the region of the nonwoven layer 2 is formed.
  • the unfused polymer particles 10 have a particle size in the range of 200-250 ⁇ m.
  • the present press felt 1 has a permeability of 40cfm.
  • the penetration depth of the polymer particles 10 into the nonwoven structure 5 is limited to the lower nonwoven layer 4, ie no polymer particles are present in the present invention Woven fabric 6 and the overlying upper nonwoven layers 2 and 3 penetrated.
  • the polymer particles 10 " are penetrated from the first surface 7 to the filter layer 13 " filtering the polymer particles 10 into the nonwoven structure 5, the concentration of the polymer particles 10 " in the lower nonwoven layer 4 remaining constant over the penetration depth achieved that in the introduction and then no vacuum support has taken place.
  • the machine-contacting surface 14 of the press felt 1 is formed by the first surface 7 with the polymer particles 10 " attached to the fibers 15.
  • FIG. 4 shows a fourth embodiment of a press felt 1 in cross-section.
  • components that are equal to those of the press felts of Figures 1 or 2, provided with the same reference numerals.
  • the press felt 1 has, as in the press felt of FIG. 1, a nonwoven structure 5 formed by the nonwoven layers 2 to 4.
  • the press felt 1 comprises two filter layers, namely the filter layer 9 and the filter layer 9 ' .
  • the upper filter layer 9 ' is arranged between the upper nonwoven layer 2 and the middle nonwoven layer 3, whereas the lower filter layer 9 is arranged at the interface between the middle nonwoven layer 3 and the fabric 6.
  • the filter layers 9 and 9 ' according to the invention for fluid so for example. Water and air, permeable and impermeable to polymer material from a certain particle size substantially.
  • the upper filter layer 9 ' is impermeable to polymer material from a particle size of 50 ⁇ m or more, while the lower filter layer 9 is impermeable to polymer material from a particle size of 30 ⁇ m or more.
  • the filter layers 9 and 9 ' are constructed like the filter layers described in FIGS. 1 and 2.
  • the particulate polymer material comprises particles 10 and 10 ' with different particle size, wherein in the production of the felt 1 first the smaller polymer particles 10 and then the larger polymer particles 10 ' were introduced from the first surface 7 into the nonwoven structure 5.
  • the unfused polymer particles 10 have a particle size in the range of 30-50 ⁇ m. Furthermore, the unfused polymer particles 10 'have a particle size in the range of 60-1 OO ⁇ rn.
  • the first surface 7 is provided by the free surface of the upper nonwoven layer 2.
  • a press felt 1 produced according to the above embodiment the larger polymer particles 10 ' and the smaller polymer particles 10 are arranged above the upper filter layer 9 ' , ie in the region from the first surface 7 to the upper filter layer 9 ' , whereas between the upper filter layer 9 '. and lower filter layer 9, only the smaller polymer particles 10 are arranged.
  • a press felt which has a higher polymer fraction in the region between the first surface 7 and the upper filter layer 9 ' than in the region between the upper filter layer 9 ' and the lower filter layer 9.
  • the polymer particles 10 are in this case from the first surface 7 to the filtering the polymer particles 10 filter layer 9 in the nonwoven structure, i. penetrated through the nonwoven layers 2 and 3, wherein the concentration of the polymer particles 10 in the upper and the middle nonwoven layer 2, 3 remains constant over the penetration depth.
  • FIG. 5 shows a further embodiment of a press felt 1 according to the invention in which the nonwoven structure is formed by an upper nonwoven layer 2, a middle nonwoven layer 2 ' and a lower nonwoven layer 4.
  • the nonwoven layers 2 and 2 ' correspond in structure to the nonwoven layer 2 of Figure 1, as the structure of the nonwoven layer 4 corresponds to the nonwoven layer 4 of Figure 1.
  • the filter layer 9 is arranged, which corresponds to the structure of the filter layer 9 of Figure 1.
  • the first surface forms the paper-contacting side 12 of the press felt.
  • the porous layer 17 forms an anti-rewet layer and has a thickness of 0.05 mm.
  • the polymer particles 10 partially impregnate fibers 11 of the nonwoven layer 2 and partially fill spaces between fibers 11 of the nonwoven layer 2, whereby the porous and permeable layer 17 is formed.
  • the polymer particles 11 are in this case partly melted together and partly melted onto the fibers 11.

Landscapes

  • Filtering Materials (AREA)

Abstract

L'invention concerne un feutre comprimé (1) qui présente une première surface (7) préparée avec une structure de feutre (5) et une deuxième surface (8) opposée à la première, ainsi qu'une structure de base (6) qui reçoit une charge qui est reliée à la structure de feutre (5) et est disposée entre la première et la deuxième surface, et qu'un matériau polymère (10) en forme de particules qui imprègne certaines parties de la structure de feutre depuis la première surface et en direction de la deuxième surface et qui s'accumule sur des fibres de la structure de feutre en formant ainsi une structure composite, de telle sorte que le feutre comprimé ait une perméabilité d'au moins 5 cfm et en particulier d'au moins 10 cfm. L'invention est caractérisée en ce qu'au moins une couche de filtre (9) qui est perméable au fluide et qui est essentiellement imperméable au matériau polymère (10) à partir d'une taille définie de particules est disposée dans la structure de feutre (5) ou sur la surface frontière entre la structure de feutre (5) et la structure de base (6).
EP08760767A 2007-08-03 2008-06-10 Feutre comprimé Withdrawn EP2185769A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95369307P 2007-08-03 2007-08-03
PCT/EP2008/057207 WO2009019060A1 (fr) 2007-08-03 2008-06-10 Feutre comprimé

Publications (1)

Publication Number Publication Date
EP2185769A1 true EP2185769A1 (fr) 2010-05-19

Family

ID=39719255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08760767A Withdrawn EP2185769A1 (fr) 2007-08-03 2008-06-10 Feutre comprimé

Country Status (3)

Country Link
US (1) US20100170652A1 (fr)
EP (1) EP2185769A1 (fr)
WO (1) WO2009019060A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007019960A1 (de) * 2007-04-27 2008-11-06 Voith Patent Gmbh Verbesserungen bei Transferbändern, Hintergrund der Erfindung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI64960C (fi) * 1982-10-08 1984-02-10 Tamfelt Oy Ab Transportfilt foer papperstillverkning och foerfarande foer des tillverkning
FI20020804A0 (fi) * 2002-04-26 2002-04-26 Tamfelt Oyj Abp Järjestely paperikoneen puristinosalla
GB0306769D0 (en) * 2003-03-25 2003-04-30 Voith Fabrics Heidenheim Gmbh Composite press felt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009019060A1 *

Also Published As

Publication number Publication date
US20100170652A1 (en) 2010-07-08
WO2009019060A1 (fr) 2009-02-12

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