EP0464258B1 - Feutre, en particulier pour machine à papier et son procédé de fabrication - Google Patents

Feutre, en particulier pour machine à papier et son procédé de fabrication Download PDF

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Publication number
EP0464258B1
EP0464258B1 EP90124010A EP90124010A EP0464258B1 EP 0464258 B1 EP0464258 B1 EP 0464258B1 EP 90124010 A EP90124010 A EP 90124010A EP 90124010 A EP90124010 A EP 90124010A EP 0464258 B1 EP0464258 B1 EP 0464258B1
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EP
European Patent Office
Prior art keywords
length
felt
supporting
fibrous
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP90124010A
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German (de)
English (en)
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EP0464258A1 (fr
Inventor
Walter Dr. Dipl.-Chem. Best
Sylvester Eschmann
Walter Schaaf
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.)
Heimbach GmbH and Co KG
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Thomas Josef Heimbach and Co GmbH
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Publication of EP0464258A1 publication Critical patent/EP0464258A1/fr
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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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles

Definitions

  • the invention relates to a felt, in particular paper machine felt, primarily for the press section of a paper machine, with at least one carrier web having one or more layers, which gives the felt structural strength, and at least one fiber web applied and connected to it, the structure of which depends on the carrier web or the carrier tracks is different. It also relates to a method for producing such an endless felt.
  • Such felts are primarily used to transport thin webs through devices for producing the same, a main area of application being the production of paper in paper machines.
  • the known felts have at least one carrier web and at least one fiber web applied thereon.
  • the carrier web - it can also be a plurality of carrier webs arranged one above the other with fiber webs lying between them - is designed in such a way that it gives the felt the structural strength in the longitudinal and transverse directions necessary for the intended purpose. It is therefore a matter of coherent webs, primarily fabrics being used. However, knitted fabrics, spunbonded nonwovens or bonded nonwoven fabrics reinforced in the transverse and longitudinal directions are also proposed.
  • a fibrous web is then placed at least on the surface of the carrier web and connected to the carrier web in order to achieve a smooth surface and damage to the items to be transported Avoid web, for example a paper web.
  • Avoid web for example a paper web.
  • the structure of such a felt is also based on the fact that the best possible drainage is achieved by the felt.
  • Such felts are still mainly produced in such a way that first the carrier web is produced in the width corresponding to the finished felt and only then is a fiber web extending over the full width placed on and connected to the carrier web.
  • the connection is made primarily by needling, but also by gluing.
  • a carrier web is first produced in the width corresponding to the width of the finished felt and is pulled onto two transport rollers arranged at a distance from one another and stretched between them. Then a fibrous web strip, the width of which is less than that of the finished felt, is fed to the carrier web and fastened to it.
  • the carrier web is then moved in the circumferential direction, a relative movement being generated between the fiber web strip to be fed and the carrier web transversely to its direction of rotation. Because of this relative movement, the fibrous web strip progressively winds onto the carrier web transversely to the direction of rotation.
  • a fibrous web is thus gradually built up, which can also be constructed in multiple layers. At the same time, needling and thus a connection between the fiber web and the carrier web is carried out in this device.
  • the feed device is arranged in a stationary manner and the carrier web is accordingly shifted across on the transport rollers.
  • grooves are worked into the transport rollers parallel to their longitudinal axes, in which grooves run, which are provided with needles projecting into the carrier web. It is conceivable, albeit complex, to combine the two principles.
  • the device can also be used for treatment and processing measures, such as flaming, needles, brushes or the like. Threads running at a distance from one another can also be applied to the felt to form longitudinal drainage channels.
  • US-A-4 495 680 ⁇ and US-A-4 594 756 are concerned with a device for producing the longitudinal thread structure known from US-A-3 0 ⁇ 97 413, wherein the longitudinal thread structure can subsequently be needled with a fibrous web, either in the device itself or in a conventional needle machine.
  • felts of the generic type are still produced with carrier webs as webs connected in the transverse and longitudinal direction, especially when the nonwoven web in the form of nonwoven web strips is applied continuously in the circumferential direction, but progressively in a helical manner in the transverse direction.
  • This is shown by the just published DE-A-39 37 651 and DE-A-39 37 652.
  • the disadvantage must be accepted that the carrier web must first be made in the width corresponding to the finished felt, which is done in correspondingly wide machines , for example weaving or knitting machines, happens. Since paper machine felts in particular have large widths, expensive and mostly slow-working weaving machines must be used for this. Knitting machines are only available in limited widths anyway, so that knitted fabrics have so far only been used with narrow felts. In addition, the machines must be set up accordingly for each paper machine felt, since paper machine felts are not series products. This results in high production costs and little flexibility. In addition, their in-house transport and their installation in devices in which the fiber web is applied is cumbersome and complex.
  • pure fiber felts which are built up by helically winding narrow fiber web strips (cf. GB-A-1 221 736, US-A-4 926 530 ⁇ ). Since they have no carrier web, they have a low strength, which is based solely on the matting or intertwining of the fibers. Their use is therefore limited to very special cases with low loads.
  • the invention has for its object to design a paper machine felt of the type mentioned so that it has improved running properties despite sufficient transverse stability and can be produced at significantly lower costs.
  • a felt is provided for the first time in which the respective carrier web is composed of one or more carrier web strips which essentially extend in the running direction of the felt, but are wound in a helical manner. It has been found to be surprising that even such a carrier web - in comparison to thread lay - gives sufficient transverse stability. This obviously has to do with the fact that the carrier web strips themselves have their own transverse stability and partially overlapping winding sections. They therefore do not tend to move sideways or shift. On the other hand, the transverse stability is effectively supported by the fact that the fibrous web is connected to the carrier web strip, in particular needled. Correspondingly, this felt can also be used in the case of high loads, such as those which occur especially in the press section of a paper machine, without its dimensional stability being impaired in comparison with the generic felts.
  • This felt and in particular its manufacturing process have considerable advantages. Due to the winding process, possible defects in the carrier web strip are limited to its width and do not extend across the entire width of the felt. As a result, the excitation of vibrations is significantly reduced or even eliminated. This also makes it possible to place sections of carrier web strips with different properties one behind the other, because the resulting defects at the connections of the sections are locally limited to the width of the respective carrier web strip. This opens up a wide range of variations in terms of the carrier web structure.
  • the permeability across the width of the felt can be varied according to the requirements.
  • the chemical equipment can also be designed differently in order to create special properties at the required points on the felt.
  • a loom or knitting machine of a correspondingly small width is sufficient for producing the carrier web strip, regardless of the width of the finished felt.
  • Such machines are not only inexpensive, they also work faster.
  • the possibility is opened to produce very wide felts, such as those used in high-performance paper machines, with a carrier web from a knitted fabric.
  • the carrier web strips can be produced in long lengths and thus without retrofitting the machines on supply rolls, which also results in a more economical and, moreover, more flexible production.
  • the supply rolls are then called up accordingly and then a device such as is found in principle from the publications mentioned at the beginning (DE-B-23 24 985, DE-A-39 37 652, DE-B-1 660 ⁇ 765, EP-B-0 ⁇ 123 969) is known.
  • the production of the felt composed of carrier web and fiber web can then take place in this device in one work step, which also contributes to the fact that the production costs are considerably lower compared to those of conventional felts.
  • There are practically no limits to the width of the felt ie very wide felts can be produced regardless of the width and structure of the respective carrier web strip.
  • no special measures are required to set this width, since the manufacturing process is simply terminated when the end width of the felt is reached.
  • the basic idea of the present invention can be realized on the one hand by providing a carrier web with at least one layer in which the adjacent winding sections of carrier web strips partially overlap.
  • a carrier web with several layers can also be present, with winding sections of carrier web strips of two adjacent layers only partially overlapping, that is to say they do not come to lie exactly above one another.
  • the latter can also be achieved by winding a carrier web strip helically in one direction to form a layer and then helically in the other direction to form the next layer, so that the winding sections of carrier web strips intersect two adjacent layers.
  • the carrier web or at least one carrier web is formed in several layers from a plurality of carrier web strips which are wound one above the other. This makes it possible to give the individual layers of the carrier web different properties by using appropriate carrier web strips. If this is not necessary, the carrier web or at least one carrier web can be made of a carrier web strip may be formed, which is wound in several layers.
  • a carrier web with at least one layer in which the carrier web strip or at least one carrier web strip is wound helically in such a way that the longitudinal edges of the respective carrier web strip abut one another.
  • At least one further carrier web strip of a carrier web can be wound helically in such a way that the adjacent winding sections of the respective carrier web strip partially overlap.
  • a single carrier web strip can form at least one further layer in which the adjacent winding sections of the carrier web strip partially overlap.
  • the felt according to the invention can be constructed practically as desired. Several carrier webs can be provided, which are separated by a fiber web. The felt can also have a fiber web on both sides and also have multi-layer fiber webs.
  • the fibrous web or at least one fibrous web is formed from at least one fibrous web strip, the width of which is smaller than the felt and the or which progresses essentially in the running direction of the felt and in a spiral shape transversely thereto is or are wound.
  • the fiber web or - in the case of several fiber webs - at least one fiber web - if not all - is constructed in the same way as the carrier web.
  • This structure of the fiber web (s) has several advantages. On the one hand, the fiber web strip can be produced on a small machine of appropriate width and kept ready in the form of supply rolls. On the other hand, the subsequent production of the felt - if all fiber webs are built up accordingly - can be done in one machine and thus particularly done inexpensively.
  • the or at least one of the fibrous web strips from which a fibrous web adjacent to a carrier web is constructed is wound in a helical manner in such a way that the fibrous web strip is connected to two adjacent winding sections of the carrier web strip.
  • This arrangement supports the cross stability of the felt.
  • at least one fiber web forming one side of the felt may be continuous, i.e. is not made up of a fibrous web strip.
  • the method according to the invention first requires the production of a material web to which the carrier web strip is attached and which can be moved in the circumferential direction.
  • This material web can be designed differently depending on the desired structure of the felt. It is thus possible to first separately produce a fibrous web in the width of the finished felt, for example on a needle machine, and then to pull this fibrous web onto the device known in principle so that it can then be rotated in the direction of rotation. The - first - carrier web strip can then be attached to this fiber web.
  • the material web is made as a material web strip with a width that is less than the width of the finished felt, and that the material web strip is removed again at the latest after the felt is finished.
  • the carrier web strip but also several - can then be attached to this material web strip at the beginning of the carrier web construction.
  • the material web strip can be, for example, a waste or scrap product of any structure.
  • the material web can also be constructed in combination, namely from a material web strip, the Width is less than that of the finished felt, and from at least one fiber web strip attached to it, the width of which is also or is less than that of the finished felt.
  • the fibrous web strip is or are constructed helically to form a fibrous web in that it is or are continuously fed transversely to the direction of rotation when there is relative movement between the fibrous web strip and the already built-up part of the fibrous web.
  • the material web consists of a material web strip which is to be removed again after completion and of a fiber web strip which is built up to a fiber web by helical winding.
  • the carrier web strip is then fastened to it for the purpose of building the carrier web, the fastening being able to take place with or directly to the connection of the fiber web strip to the material web strip or only after the fiber web has been completed.
  • a felt consisting of a carrier web and an external fiber web is obtained in this way.
  • fiber webs which are constructed from fiber web strips in the manner described in order to allow the production process to run in one device.
  • fiber web strips and carrier web strips run adjacent, they should be fed so that they are offset transversely to the direction of rotation such that the fiber web strip comes to lie over two adjacent carrier web strips. This supports the cross stability of the felt.
  • the feed can also proceed in such a way that a multi-layer carrier web and / or a multi-layer fiber web are built up, either by feeding a plurality of carrier web strips and / or fiber web strips, or by a carrier web strip or fiber web strip through at least one-time reversal of the relative movement between carrier web strips or fiber web strips and already built-up part of the felt is wound over one another transversely to the direction of rotation.
  • the supply of carrier web strips and / or fibrous web strips can take place in such a way that the longitudinal edges come to lie against one another or that the adjacent winding sections of the fibrous web strips partially overlap.
  • these two alternatives can also be combined with one another in terms of layers.
  • At least one additional fiber web in the width of the finished felt is finished separately and then applied and fastened to the top and / or bottom of the built-up part of the felt.
  • several carrier webs can be built up by helically winding up carrier web strips, a fiber web being built up between the carrier webs by helically winding up the fibrous web strip.
  • a particularly effective connection, which hardly disturbs the structure of the felt, between the fiber web and the carrier web is produced in a manner known per se by needling, the needling being carried out in strips even during the construction of the carrier web and / or the fiber web, by the device used for this purpose a corresponding needle device is assigned.
  • the device (1) shown in Figures (1) and (2) has two transport rollers (2, 3) which have horizontal axes of rotation (4, 5) and are mounted at a horizontal distance from one another.
  • the transport rollers (2, 3) have grooves which run parallel to the axes of rotation (4, 5) and are distributed over the lateral surfaces, for example with (6, 7) - in which transport chains - for example with (8, 9) - are guided .
  • the transport rollers (2, 3) rotate in the directions of arrows A.
  • the device (1) has two feed devices (12, 13).
  • a total of four supply rolls (14, 15, 16, 17) are rotatably mounted in the upper feed device (12) in the direction of the arrows, namely two adjacent upper supply rolls (14, 15) and two lower supply rolls also arranged side by side ( 16, 17).
  • Each supply roll (14, 15, 16, 17) has an axis of rotation (18, 19, 20 ⁇ , 21), on each of which a web strip (22, 23, 24, 25) is wound.
  • Guide rollers (26, 27, 28) ensure perfect guidance of the unwound web strips (22, 23, 24, 25).
  • a carding device could also be provided, via which a nonwoven fabric can be fed.
  • the second feed device (13) is arranged on the underside of the device.
  • two supply rolls (29, 30 ⁇ ) are stored side by side, which also consist of the axes of rotation (31, 32) and the web strips (33, 34) wound on them.
  • Guide rollers (35, 36) serve to support the unwound web strips (33, 34).
  • the device (1) also has a needle machine (37), of which only the nail boards (38, 39, 40 ⁇ ) are shown here.
  • the nail boards (38, 39, 40 ⁇ ) are arranged one above the other and vertically movable.
  • a needle board (38) is provided in the upper part of the device (1), while two counter-rotating needle boards (39, 40 ⁇ ) are present in the lower part.
  • fibrous web strips or carrier web strips can be used as web strips (22, 23, 24, 25, 33, 34).
  • the fibrous web strips then consist of a nonwoven fabric, the nonwoven fabric having different fiber orientations, fineness and fiber density, while the carrier web strips can have different structures, for example woven, knitted, spunbonded nonwoven, film and / or composite thread laid strips.
  • a strip of material is first drawn onto the two transport rollers (2, 3), approximately at the level of the supply of the supply rolls (14, 15, 16, 17, 29, 30 ⁇ ).
  • This strip of material web can be, for example, a reject fabric strip.
  • the individual web strips (22, 23, 24, 25, 33, 34) are then attached with their front ends.
  • the two transport rollers (2, 3) and thus the material web strip are then set in motion in the circumferential direction, as a result of which the web strips (22, 23, 24, 25, 33, 34) are removed from the supply rolls (14, 15, 16, 17, 29, 30 ⁇ ) are removed and come to rest on the material web strip.
  • the needle machine (37) is put into operation with the result that the individual web strips (22, 23, 24, 25, 33, 34) are needled together, ie the fibers of the fibrous web strips penetrate into the carrier web strips.
  • the transport chains (8, 9) With the rotary movement of the transport rollers (2, 3), the transport chains (8, 9) are set in motion in the directions of the arrows B. The consequence of this is that the material web strip and thus also the part (41) of the felt already built on it are transported accordingly. Due to the relative movement between this part (41) of the felt and the web strips (22, 23, 24, 25, 33, 34), the latter are wound helically onto the transport rollers (2, 3) at a speed of the transport chains (8 , 9) corresponding slope.
  • the web strips (22, 23, 24, 25, 33, 34) are then cut off.
  • the finished felt is drawn off from the transport rollers (2, 3) by putting the transport chains (8, 9) into operation again. After the felt has been removed, the material web strip, which is used only as an alternative, is cut off.
  • the felt is then either finished or can be used for further processing operations, for example in order to needle a further fiber web, which has the width of the felt from the outset, in a needling machine.
  • the individual supply rolls (14, 15, 16, 17, 29, 30 ⁇ ) can also be offset from one another, so that the web strips (22, 23, 24, 25, 33, 34) are fed accordingly offset, which is particularly advantageous for the lateral stability. Also, not all supply rolls (14, 15, 16, 17, 29, 30,) have to be available. In addition, the distance between the transport rollers (2, 3) is variable so that felts of different lengths can also be produced.
  • the felt (42) has a lower fiber web (43) and an upper fiber web (44), a carrier web (45) being arranged between the two fiber webs (43, 44).
  • the lower fibrous web (44) has been made conventionally, i.e. separately in the intended end width of the felt (42), and then needled onto the underside of the combination of fiber web (44) and carrier web (45) in a needle machine.
  • the fibrous web (44) and the carrier web (45) have been produced in the device (1) according to the figures (1) and (2).
  • the speed of the transport chains (8, 9) has been set so low that the individual turns of the carrier web strip (46) partially overlap, which has been expressed schematically by the Z-shaped representation of the carrier web strip (46).
  • the upper fibrous web (44) has a helical structure. Due to the needling, this fibrous web (44) has a largely homogeneous structure. Due to the needling of both the upper and the lower fiber webs (43, 44) with the carrier web (45), the individual turns of the carrier web strip (46) cannot move transversely with respect to one another. As a result and due to the inherent stability of the carrier web stiffener (46) in the transverse direction, the felt (42) has sufficient transverse stability.
  • the felt (47) shown in Figure (4) also has a lower and an upper fiber web (48, 49) which correspond to the fiber webs (43, 44) in the felt (42).
  • the intermediate carrier web (50 ⁇ ) is constructed here in two layers, in that two carrier web strips (51, 52) have been fed one above the other. This can have happened simultaneously or in succession.
  • the speed of the transport chains (8, 9) has been set so high that the individual turns of the carrier web strips (51, 52) do not overlap, but rather adjoin their longitudinal edges.
  • the carrier web strips (51, 52) have also been fed in such a way that they are offset from one another, that is to say the longitudinal edges of the turns of the lower carrier web strip (52) are offset from those of the upper carrier web strip (51). Adequate transverse stability is also achieved here by needling the fiber webs (48, 49) with the carrier web (50 ⁇ ).
  • the felt (53) shown in FIG. (5) has three superimposed fiber webs (54, 55, 56), between each of which a carrier web is arranged.
  • the lower fiber web (54) is conventionally produced and needled like the lower fiber webs (43, 48) of the felts (42, 47).
  • the middle and upper fiber web (55, 56) have been built up in the device (1) according to the figures (1) and (2) by helically applying a fiber web strip.
  • This also applies to the carrier webs (57, 58) which have been built up from carrier web strips (59, 60 ⁇ ) by being introduced into the device (1) according to FIGS. (1) and (2). This was done in such a way that the longitudinal edges of the turns of the carrier tape strips (59, 60 ⁇ ) lie against each other.
  • the carrier web strips (59, 60 ⁇ ) have been fed offset so that the longitudinal edges do not lie on top of each other.
  • the individual layers of the felt (53) are connected to one another by needling the fiber webs (54, 55, 56) with the carrier webs (57, 58).
  • the felt (61) shown in Figure (6) has a lower fiber web (62) and an upper fiber web (63).
  • the lower fiber web (62) was subsequently needled after separate production, while the upper fiber web (63) in the device (1) according to FIGS. (1) and (2) was built up by helically winding up a fiber web strip.
  • a carrier web (64) is enclosed between the two fiber webs (62, 63) and has two layers.
  • the lower layer of the carrier web (64) is formed by a carrier web strip (65) which has been wound up in the same way as the carrier web strip (46). The individual turns of the carrier web strip (65) thus overlap.
  • the upper layer of the carrier web (64), on the other hand, is formed by a carrier web strip (66), the individual turns of which adjoin one another, that is to say lie next to one another and do not overlap.
  • the two carrier web strips (65, 66) are offset from one another in such a way that their longitudinal edges do not lie one above the other.
  • the felt (67) shown in Figure (7) has a lower fiber web (68), a middle fiber web (69) and an upper fiber web (70 ⁇ ).
  • the lower fiber web (68) is conventionally and separately manufactured and then needled.
  • the overlying part of the felt (67) has been built up in the device (1) according to the figures (1) and (2).
  • a carrier web (71, 72) is enclosed between the fiber webs (68, 69, 70 ⁇ ).
  • the lower carrier web (71) is formed from two carrier web strips (73, 74), the windings of the lower carrier web strip (73) lying next to one another, while the windings of the upper carrier web strip (74) overlap.
  • the upper carrier web (72) is constructed from a carrier web strip (75) in such a way that its turns lie side by side without overlap. The individual layers are connected by needling the fiber webs (68, 69, 70 ⁇ ).
  • the device (1) according to the figures (1) and (2) can also be used to produce felts of a different structure will.
  • the respective lower fiber web in the device (1) can also be constructed from one or more fiber web strips.
  • a plurality of carrier webs with overlapping turns can also be superimposed.
  • the felt is completely built up in the device (1) according to the figures (1) and (2), there are practically no limits to the width, ie extreme widths can also be produced for the previously wide devices for the production the carrier web (s) and fiber webs are not available, in particular if the carrier web (s) are designed as woven or knitted fabrics.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Filtering Materials (AREA)

Claims (31)

  1. Feutre, en particulier feutre pour machines à papier destiné à la section des presses d'une machine à papier, comprenant au moins une bande support (45, 64, 71, 72), possédant une ou plusieurs couches, qui confère au feutre (42, 61, 67) la résistance structurale, et au moins une bande de fibres (43, 44, 62, 63, 68, 69, 70) appliquée sur la bande support et reliée à elle, qui diffère dans sa structure de la bande support (45, 64) ou des bandes supports (71, 72),
    caractérisé en ce que la bande support ou chaque bande support (45, 64, 71, 72) est formée d'au moins un ruban support (46, 65, 66, 73, 74, 75) dont la largeur est inférieure à celle de la bande support finie ou des bandes supports finies (45, 64, 71, 72) et qui est enroulé ou qui sont enroulés essentiellement dans la direction de défilement du feutre (42, 61, 67), ainsi qu'en hélice, en avançant transversalement à cette direction, de manière que soient formées chaque fois des spires de ruban support (portions de ruban support formant des spires) (46, 65, 74) qui se chevauchent en partie.
  2. Feutre selon la revendication 1, caractérisé en ce qu'il comprend une bande support (45, 64, 71) possédant au moins une couche dans laquelle les portions de spires voisines de ruban support (46, 65, 74) se chevauchent en partie.
  3. Feutre selon la revendication 1 ou 2, caractérisé en ce qu'il comprend une bande support (50, 64, 71) possédant plusieurs spires et dans lequel des portions de spires de ruban support (51, 52, 65, 66, 73, 74) de deux couches voisines se chevauchent en partie seulement.
  4. Feutre selon une des revendications 1 à 3, caractérisé en ce qu'un ruban support est enroulé en hélice dans un sens en vue de la formation d'une couche et est enroulé ensuite en hélice dans l'autre sens en vue de la formation de la couche suivante.
  5. Feutre selon une des revendications 1 à 4, caractérisé en ce que la bande support (50, 64) ou au moins une bande support (71) est formée de plusieurs rubans supports (51, 52, 65, 66, 73, 74) enroulés l'un par-dessus l'autre.
  6. Feutre selon une des revendications 1 à 4, caractérisé en ce que la bande support ou au moins l'une des bandes supports est formée d'un ruban support qui est enroulé en plusieurs couches superposées.
  7. Feutre selon une des revendications 1 à 6, caractérisé en ce qu'il comprend une bande support (50, 57, 58, 64, 71, 72) possédant au moins une couche dans laquelle le ruban support (46) ou au moins un ruban support (51, 52, 66, 73, 75) est enroulé en hélice de manière que les bords longitudinaux du ruban support (46, 51, 52, 66, 73, 75) concernés soient appliqués l'un contre l'autre.
  8. Feutre selon la revendication 7, caractérisé en ce qu'au moins un autre ruban support (65, 74) d'une bande support (64, 71) est enroulé en hélice de manière que les spires placées l'une à côté de l'autre du ruban support (65, 74) concerné se chevauchent en partie.
  9. Feutre selon la revendication 7, caractérisé en ce que le ruban support forme au moins une couche supplémentaire dans laquelle les spires voisines du ruban support se chevauchent en partie.
  10. Feutre selon une des revendications 1 à 9, caractérisé en ce que le feutre (53, 67) comprend plusieurs bandes supports (57, 58, 71, 72) séparées par une bande de fibres (55, 69).
  11. Feutre selon une des revendications 1 à 10, caractérisé en ce que le feutre (42, 47, 53, 61, 67) présente une bande de fibres (43, 44, 48, 49, 54, 56, 68, 70) sur chacune des deux faces.
  12. Feutre selon une des revendications 1 à 11, caractérisé en ce que la bande de fibres ou au moins une bande de fibres (44, 49, 55, 56, 63, 69, 70) est formée d'au moins un ruban de fibres dont la largeur est inférieure à celle du feutre (42, 47, 53, 61, 67) et qui est enroulé ou qui sont enroulés essentiellement dans la direction de défilement du feutre (42, 47, 53, 61, 67) ainsi qu'en hélice, en avançant transversalement à cette direction.
  13. Feutre selon la revendication 12, caractérisé en ce que le ruban de fibres ou au moins un ruban de fibres d'où est formée une bande de fibres (44, 49, 55, 56, 63, 69, 70) voisine d'une bande support, est enroulé en hélice de manière que le ruban de fibres soit relié chaque fois à deux spires voisines du ruban support (46, 51, 59, 60, 66, 74, 75).
  14. Feutre selon une des revendications 1 à 13, caractérisé en ce qu'au moins une bande de fibres (43, 48, 54, 62, 68) formant une face du feutre (42, 47, 53, 61, 67) est réalisée comme une bande continue.
  15. Feutre selon une des revendications 1 à 14, caractérisé en ce qu'au moins une bande de fibres (43, 44, 48, 49, 54, 55, 56, 62, 63, 68, 69, 70) est assemblée chaque fois à la bande support ou aux bandes supports (45, 50, 57, 58, 64, 71, 72) par aiguilletage.
  16. Procédé de fabrication d'un feutre sans fin (42, 61, 67), en particulier d'un feutre pour machines à papier destiné à la section des presses d'une machine à papier, qui comprend au moins une bande support (45, 64, 71, 72), possédant une ou plusieurs couches, qui confère de la résistance structurale au feutre (42, 61, 67), ainsi qu'au moins une bande de fibres (43, 44, 62, 63, 68, 69, 70) appliquée sur la bande support (45, 64, 71, 72) et reliée à elle, la bande de fibres (43, 44, 62, 63, 68, 69, 70) ayant une structure qui diffère de celle de la bande support (45, 64) ou des bandes supports (71, 72), caractérisé par les étapes de procédé suivantes:
    a) on produit d'abord une bande de matériau;
    b) on fixe à cette bande de matériau au moins un ruban support (46, 65, 66, 73, 74, 75) dont la largeur est inférieure à celle du feutre fini (42, 61, 67);
    c) on déplace la bande de matériau en direction périphérique;
    d) on confectionne la première bande support (45, 64, 71, 72) et, éventuellement, d'autres bandes supports (45, 64, 71, 72), à l'aide d'un mouvement relatif produit entre le ruban support (46, 60, 65, 66, 73, 74, 75) concerné et la partie (41) déjà confectionnée du feutre (42, 61, 67), mouvement qui est en forme d'hélice et correspond à une progression transversale à la direction périphérique de la bande de matériau;
    e) on confectionne la bande support (45, 64) ou au moins une bande support (71), de manière que soient formées chaque fois des spires de ruban support (portions de ruban support formant des spires) (45, 65, 74) qui se chevauchent en partie;
    f) on relie chaque bande support (45, 64, 71, 72) à au moins une bande de fibres (43, 44, 48, 49, 54, 55, 56, 57, 62, 63, 68, 69, 70).
  17. Procédé selon la revendication 16, caractérisé en ce que l'on confectionne une bande support (45, 64, 71), possédant au moins une couche, de manière que soient formées des spires de ruban support (46, 65, 74) qui se chevauchent en partie.
  18. Procédé selon la revendication 16 ou 17, caractérisé en ce que l'on confectionne une bande support (50, 64, 71), possédant plusieurs couchés, de manière que des spires de ruban support (51, 52, 65, 66, 73, 74) de deux couches voisines se chevauchent seulement en partie.
  19. Procédé selon une des revendications 16 à 18, caractérisé en ce que l'on produit la bande de matériau séparément comme une bande de fibres ayant la largeur du feutre fini avant que le - premier - ruban support ne soit fixé à elle.
  20. Procédé selon une des revendications 16 à 19, caractérisé en ce que l'on produit la bande de matériau à partir d'un ruban de matériau d'une largeur inférieure à la largeur du feutre fini (42, 47, 53, 61, 67), et que, au plus tard après la finition du feutre (42, 47, 53, 61, 67), on enlève de nouveau ce ruban de matériau.
  21. Procédé selon une des revendications 16 à 18, caractérisé en ce que l'on compose la bande de matériau d'un ruban de matériau dont la largeur est inférieure à celle du feutre fini (42, 47, 53, 61, 67) et d'au moins un ruban de fibres fixé à lui et dont la largeur est également inférieure à celle du feutre fini (42, 47, 53, 61, 67), le ruban de fibres ou les rubans de fibres étant transformé(s) par enroulement en hélice en une bande de fibres (44, 48, 55, 56, 63, 69, 70) par le fait qu'il est amené ou qu'ils sont amenés de façon continue, au cours d'un mouvement relatif entre le ou les rubans de fibres et la partie (41) déjà confectionnée de la bande de fibres (44, 48, 55, 56, 63, 69, 70), transversalement à la direction périphérique, que le ruban support ou au moins un ruban support (46, 51, 52, 59, 60, 65, 66, 73, 74, 75) est fixé au ruban de fibres pour l'amenée en hélice et que, enfin, le ruban de matériau est enlevé de nouveau au plus tard après la finition du feutre (42, 47, 53, 61, 67).
  22. Procédé selon une des revendications 16 à 20, caractérisé en ce que la bande de fibres ou au moins une bande de fibres (44, 49, 55, 56, 63, 69, 70) est confectionnée, par enroulement en hélice, par le fait qu'au moins un ruban de fibres est amené de façon continue, en direction périphérique, sous une largeur inférieure à celle du feutre fini (42, 47, 53, 61, 67), et qu'un mouvement relatif a lieu entre le ou les rubans de fibres et la partie (41) déjà confectionnée du feutre.
  23. Procédé selon la revendication 21 ou 22, caractérisé en ce qu'au moins des rubans de fibres et des rubans supports (46, 51, 52, 59, 60, 66, 73, 74, 75) voisins sont amenés avec un décalage relatif tel, transversalement à la direction périphérique, que le ruban de fibres vient s'appliquer chaque fois par-dessus deux rubans supports voisins (46, 51, 59, 60, 66, 71, 75).
  24. Procédé selon une des revendications 15 à 23, caractérisé en ce que plusieurs rubans supports (51, 52, 65, 66, 73, 74) et/ou rubans de fibres sont amenés de manière que soit confectionnée chaque fois une bande support (50, 64, 71) ou une bande de fibres à plusieurs couches.
  25. Procédé selon une des revendications 15 à 24, caractérisé en ce que l'on confectionne une bande support ou une bande de fibres à plusieurs couches par l'enroulement à superposition d'un ruban support ou d'un ruban de fibres par au moins une inversion du mouvement relatif entre le ruban support ou le ruban de fibres et la partie déjà confectionnée du feutre, transversalement à la direction périphérique.
  26. Procédé selon une des revendications 18 à 25, caractérisé en ce que l'on enroule au moins un ruban support (51, 52, 59, 60, 66, 73, 75) et/ou un ruban de fibres en hélice, de manière que les bords longitudinaux s'appliquent chaque fois l'un contre l'autre.
  27. Procédé selon une des revendications 16 à 26, caractérisé en ce que l'on enroule le ruban de fibres ou au moins un ruban de fibres en hélice, de manière que les spires placées l'une à côté de l'autre du ruban de fibres (46, 65, 74) concerné viennent se poser en se chevauchant en partie.
  28. Procédé selon la revendication 26 ou 27, caractérisé en ce que l'on forme la bande en voile de fibres et/ou la bande support (71), ou au moins une telle bande de voile et/ou une telle bande support par enroulement en hélice à plusieurs couches, l'enroulement s'effectuant, de manière que dans au moins une couche, les bords longitudinaux des spires viennent s'appliquer l'un contre l'autre et que, dans au moins une autre couche, les spires placées l'une à côté de l'autre se chevauchent en partie.
  29. Procédé selon une des revendications 16 à 28, caractérisé en ce que, en plus, on produit séparément au moins une bande de fibres supplémentaire (43, 48, 54, 62, 68) sous la largeur du feutre fini et on l'applique et la fixe ensuite sur le côté supérieur et/ou le côté inférieur de la partie (41) confectionnée du feutre.
  30. Procédé selon une des revendications 16 à 29, caractérisé en ce que l'on confectionne plusieurs bandes supports (57, 58, 71, 72) par enroulement en hélice de ruban support (59, 60, 73, 74, 75) et que, entre les bandes supports (57, 58, 71, 72), on confectionne chaque fois une bande de fibres (55, 69) par enroulement en hélice de ruban de fibres.
  31. Procédé selon une des revendications 16 à 30, caractérisé en ce que l'on fixe la ou les bandes supports (45, 50, 57, 58, 64, 71, 72) et la ou les bandes de fibres (43, 44, 48, 49, 54, 55, 56, 62, 63, 68, 69, 70) entre elles par aiguilletage.
EP90124010A 1990-06-13 1990-12-13 Feutre, en particulier pour machine à papier et son procédé de fabrication Expired - Lifetime EP0464258B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4018907 1990-06-13
DE4018907 1990-06-13

Publications (2)

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EP0464258A1 EP0464258A1 (fr) 1992-01-08
EP0464258B1 true EP0464258B1 (fr) 1996-03-13

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EP (1) EP0464258B1 (fr)
AT (1) ATE135430T1 (fr)
CA (1) CA2044385C (fr)
DE (2) DE9007400U1 (fr)
DK (1) DK0464258T3 (fr)
ES (1) ES2085318T3 (fr)
FI (1) FI96704C (fr)
MX (1) MX173319B (fr)
NO (1) NO180647C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU654165B2 (en) * 1990-12-17 1994-10-27 Albany International Corp. Press felt and method of manufacturing it
EP0947623A1 (fr) * 1998-04-02 1999-10-06 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. Bande textile, procédé pour la fabrication et appareil
US6630223B2 (en) 2001-01-26 2003-10-07 Albany International Corp. Spirally wound shaped yarns for paper machine clothing and industrial belts
DE102008002398A1 (de) 2008-06-12 2009-12-17 Voith Patent Gmbh Verfahren zur Herstellung eines Papiermaschinenbandes
EP2358939B1 (fr) 2008-11-19 2015-04-29 Voith Patent GmbH Toile de machine à papier et son procédé de réalisation

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6240608B1 (en) * 1999-04-12 2001-06-05 Albany International Corp. Method for joining nonwoven mesh products
US6723208B1 (en) 2000-10-05 2004-04-20 Albany International Corp. Method for producing spiral wound paper machine clothing
GB0025514D0 (en) 2000-10-18 2000-11-29 Voith Fabrics Heidenheim Gmbh Papermachine clothing
PT1209283E (pt) 2000-11-23 2004-05-31 Heimbach Gmbh Thomas Josef Tira de tecido particularmente cobertura de papel de maquina
FI110133B (fi) 2000-12-18 2002-11-29 Tamfelt Oyj Abp Menetelmä puristinhuovan valmistamiseksi ja puristinhuopa
US6565713B2 (en) * 2001-02-03 2003-05-20 Albany International Corp. Laminated structure for paper machine press fabric and method making
DE10140864A1 (de) * 2001-08-21 2003-03-06 Truetzschler Gmbh & Co Kg Vorrichtung zum Vernadeln eines förderbaren Faservlieses
ES2372111T3 (es) 2006-03-21 2012-01-16 Heimbach Gmbh & Co. Kg Procedimiento para fabricar una cinta de fieltro y cinta de fieltro.
US20090047496A1 (en) * 2007-08-16 2009-02-19 Hansen Robert A Multilayer fabric and manufacturing method thereof
ATE507348T1 (de) 2007-12-04 2011-05-15 Heimbach Gmbh & Co Kg Verfahren zur herstellung eines maschinenfilzes sowie maschinenfilz
DE102009028215B3 (de) 2009-08-04 2010-09-09 Voith Patent Gmbh Kombination eines Pressfilzes mit einem Presswalzenbezug und/oder einem Saugwalzenbezug für eine Papiermaschine

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SE307447B (fr) * 1968-03-11 1969-01-07 Nordiska Maskinfilt Ab
FI53844C (fi) * 1972-06-27 1978-08-10 Tampereen Verkatehdas Oy Foerfarande foer tillverkning av en naolad aendloes maskinfilt
DE3319241A1 (de) * 1983-04-30 1984-11-15 Thomas Josef Heimbach GmbH & Co, 5160 Düren Verfahren zum herstellen eines endlosen schlauchfilzes sowie vorrichtung zum durchfuehren dieses verfahrens
US4926530A (en) * 1987-12-11 1990-05-22 Morrison Berkshire, Inc. Method for manufacturing needled felts having machine direction oriented fibers
AT391676B (de) * 1988-11-22 1990-11-12 Fehrer Textilmasch Verfahren und vorrichtung zum aufnadeln eines vliesbandes auf eine umlaufende, endlose traegerbahn

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU654165B2 (en) * 1990-12-17 1994-10-27 Albany International Corp. Press felt and method of manufacturing it
US5360656A (en) * 1990-12-17 1994-11-01 Albany International Corp. Press felt and method of manufacturing it
EP0947623A1 (fr) * 1998-04-02 1999-10-06 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. Bande textile, procédé pour la fabrication et appareil
US6162518A (en) * 1998-04-02 2000-12-19 Thomas Josef Heimbach Gesellschaft Mit Beschrankter Haftung & Co. Textile length, process for producing one such textile length, and a device for executing this process
CN1100179C (zh) * 1998-04-02 2003-01-29 托马斯约瑟夫亨巴赫有限公司 织造轨带及其制造方法以及实现这种方法的装置
US6630223B2 (en) 2001-01-26 2003-10-07 Albany International Corp. Spirally wound shaped yarns for paper machine clothing and industrial belts
DE102008002398A1 (de) 2008-06-12 2009-12-17 Voith Patent Gmbh Verfahren zur Herstellung eines Papiermaschinenbandes
EP2358939B1 (fr) 2008-11-19 2015-04-29 Voith Patent GmbH Toile de machine à papier et son procédé de réalisation

Also Published As

Publication number Publication date
NO912253D0 (no) 1991-06-12
DK0464258T3 (da) 1996-05-28
CA2044385C (fr) 1999-06-29
MX173319B (es) 1994-02-15
EP0464258A1 (fr) 1992-01-08
DE59010202D1 (de) 1996-04-18
NO912253L (no) 1991-12-16
ES2085318T3 (es) 1996-06-01
FI912797A0 (fi) 1991-06-11
FI96704B (fi) 1996-04-30
NO180647B (no) 1997-02-10
FI96704C (fi) 1996-08-12
ATE135430T1 (de) 1996-03-15
FI912797L (fi) 1991-12-14
DE9007400U1 (de) 1991-08-14
CA2044385A1 (fr) 1991-12-14
NO180647C (no) 1997-05-21

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