EP1837440B1 - Procédé destiné à la fabrication d'une bande de feutre et une bande de feutre - Google Patents

Procédé destiné à la fabrication d'une bande de feutre et une bande de feutre Download PDF

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Publication number
EP1837440B1
EP1837440B1 EP07005050A EP07005050A EP1837440B1 EP 1837440 B1 EP1837440 B1 EP 1837440B1 EP 07005050 A EP07005050 A EP 07005050A EP 07005050 A EP07005050 A EP 07005050A EP 1837440 B1 EP1837440 B1 EP 1837440B1
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EP
European Patent Office
Prior art keywords
threads
transverse
carrier
longitudinal
felt sheet
Prior art date
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Active
Application number
EP07005050A
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German (de)
English (en)
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EP1837440A1 (fr
Inventor
Walter Dr. Best
Christian Molls
Dieter Telgmann
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Heimbach GmbH and Co KG
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Heimbach GmbH and Co KG
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Publication date
Priority claimed from DE200620004624 external-priority patent/DE202006004624U1/de
Application filed by Heimbach GmbH and Co KG filed Critical Heimbach GmbH and Co KG
Priority to PL07005050T priority Critical patent/PL1837440T3/pl
Priority to EP07005050A priority patent/EP1837440B1/fr
Publication of EP1837440A1 publication Critical patent/EP1837440A1/fr
Application granted granted Critical
Publication of EP1837440B1 publication Critical patent/EP1837440B1/fr
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    • 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
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • 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
    • D21F7/10—Seams thereof

Definitions

  • the invention relates to a method for producing a felt with a carrier embedded in a fiber matrix of at least two superimposed yarn layers, of which at least one as Lzanfadengelege consisting of parallel longitudinal threads, and at least one as Querfadengelege consisting of parallel transverse threads are formed , wherein transverse threads are present, which are continuous across the width of the felt belt.
  • the invention further relates to such a felt belt, in particular as a paper machine felt.
  • felt belts are known in which a carrier consisting of textile plastic threads is embedded in a fiber matrix of synthetic fibers.
  • Such papermaking belts are used primarily as press felts in the press section of a paper machine.
  • the preparation of the fiber matrix takes place in such a way that on the carrier one or more non-woven fabric layers are needled on one or both sides.
  • the carrier is not made of a fabric, but of at least two superposed yarn layers.
  • a scrim has at a distance from one another parallel arranged threads, which are not integrated with each other unlike fabrics and knitted fabrics.
  • the filament scrims are arranged so that the threads of adjacent scrim intersect, and as a rule so that a scrim is formed as L jossfadengelege with extending in the longitudinal direction of the felt longitudinal filaments and a scrim as Querfadengelege transverse transverse threads.
  • Such a felt belt is in the form of an endless press felt in the US 4,781,967 disclosed.
  • first modules are formed, which consist either completely of a fiber layer or a combination of fiber layer and scrim.
  • For the production of these modules is on the US 3,613,258 directed.
  • the individual modules are then superposed and bonded together without the use of binding threads, in part using extruded polymeric material. How the connection of the individual modules creates an endless felt belt, is the US 4,781,967 not to be taken.
  • press felts Due to the use of hot melt adhesive fibers or adhesive, the press felts are according to the US 4,781,967 relatively dense (cf. US Pat. No. 6,425,985 B1 , Column 1, lines 38 to 47) and stiff. This limits the usefulness of such felt belts in paper machines.
  • a carrier of at least two superposed yarn layers wherein the carrier may also be covered with a fiber layer.
  • the preparation of the carrier takes place in such a way that the longitudinal threads between two thread trees are clamped parallel to each other and then the transverse threads are placed over the longitudinal threads. Then, the transverse threads are fused with the longitudinal threads by means limited to their crossing points heating to melting temperature.
  • the filaments can be heated by means of a laser beam if the filaments are provided by means of an additive which promotes the absorption of the laser beam.
  • a method for producing a felt belt in particular as a press felt, in which the carrier is constructed in that a carrier web strip, the width of which is substantially smaller than the intended width of the carrier, helically wound on two spaced rollers until the intended Width of the carrier is reached. Simultaneously or subsequently, the carrier is covered with nonwoven strips in the same manner and the nonwoven web thus formed is needled to the carrier. The oblique side edges of a felt belt constructed in this way are then trimmed, resulting in straight side edges which extend in the running direction.
  • the longitudinal threads extend at an angle to the longitudinal direction of the felt belt due to the winding process, and there are no continuous transverse threads, so that the transverse strength of the felt is not very high.
  • the edges of the carrier web strip after the EP 0 947 623 A1 connected by the fact that the transverse threads of the Querfadengeleges interlock at the edges and there is a connecting thread placed on and welded to the intermeshing sections of the transverse threads.
  • this has the disadvantage that in the region of the edges, a strip is formed, which due to the different arrangement and density of the threads other properties, in particular a lower permeability than the other surfaces of the felt belt. This can lead to marks on the paper web.
  • the invention has for its object to provide a method for producing a felt with a built-up longitudinal and transverse thread and embedded in a fiber matrix carrier with which a felt with high transverse strength in a simple and thus cost-effective manner and with the same properties over the width can be produced.
  • felt tapes can be produced by taking advantage of the advantages of a winding process in a simple and cost-effective manner. Since they have continuous transverse threads, they have a high transverse strength.
  • the felt tapes are also distinguished by the fact that their properties, in particular the water permeability which is important for use in a paper machine, are uniform over their area.
  • threads are used which contain an additive which the Make filaments absorbent for the laser beam.
  • additives are NIR-active substances which are active in the near infrared and absorb, for example, in the wavelengths 808 nm, 940 nm, 980 nm or 1064 nm.
  • carbons or colorless additives such as Clearweld® from Gentex or Lumogen® IR from BASF are suitable for this purpose.
  • the additive preferably extends over the entire length of the threads. In this case, the additive may be incorporated in the threads and / or applied to the surface of the threads. When the additive is incorporated, the weight fractions should be from 0.10% to 2.5%.
  • the auxiliary carrier webs may consist of a non-woven fabric and / or a plastic network, as for example from the EP 0 285 376 B . EP 0 307 182 A . WO 91/02642 or WO 92/17643 is known, and / or a film preferably made of plastic. As far as a nonwoven fabric is used, it should have a basis weight of 20 to 150 g / m 2 , wherein for the application of the method according to the invention, a basis weight of 30 to 60 g / m 2 is sufficient.
  • the nonwoven fabric may also contain hot melt adhesive fibers.
  • the subcarrier webs should be made of a material that absorbs laser energy much less than the filaments or absorbs no laser energy. These are usually the usual thermoplastic materials, such as polyamide 4.6, 6, 6.6, 6.10, 6.12, 11, 12 and polyester, polypropylene, etc. Also, the threads themselves may be made of the aforementioned materials except for the additive, expediently from the same as that used for the auxiliary carrier webs. The same applies to the finally alshnadelnde (s) Faservliesechieht (s), wherein in the case of several layers different fiber fineness can be provided, and preferably so that the finest Faserfechen come to rest on the paper side surface of the felt.
  • the threads are arranged parallel to the side edges of the auxiliary carrier webs, preferably at equal intervals. Due to the helical winding process of the first auxiliary carrier web, the longitudinal threads do not extend exactly in its longitudinal direction after completion of the felt belt, but rather slightly obliquely thereto.
  • the auxiliary carrier web used for the winding is produced in a width of 0.2 to 1.5 m.
  • the second auxiliary carrier web expediently has an extension transverse to the applied or applied threads of 0.5 to 6 m, preferably 3 to 6 m.
  • the production of the carrier module sections can be done in such a way that first an auxiliary carrier web of greater length produced and the threads are lasered and that then the thus formed band at intervals, which corresponds to the necessary for the production of the finished felt belt width of the felt belt is divided.
  • the preparation of the second auxiliary carrier web can be carried out by means of the methods known in the art.
  • the felt belt is produced endlessly, since even the first carrier module is endless and the respective second carrier module from the carrier module sections is likewise assembled into an endless module.
  • the first auxiliary carrier web or the carrier module sections should be joined together at their adjacent edges. This can be done in different ways.
  • the edges can be overlapped and then joined together in the overlapping area. Conveniently, this is done so that one of the two edges in a width of 10 to 50 mm is not covered with threads and this edge is then brought to overlap with the adjacent, provided with threads edge.
  • the connection of the two edges can then be done by welding by means of ultrasound or gluing.
  • the threads themselves can be used by being applied again in the edge region with a laser beam.
  • the edges can also be sewn together.
  • the thickening in the overlapping area is irrelevant because of the low thickness of the auxiliary carrier web, especially since it is largely destroyed during the later needling of the fiber fleece layer.
  • connection of the edges may be effected by providing the edges with successive complementary projections and recesses, and then placing the edges against one another so as to engage with their projections and recesses, and finally by protruding one against the other lying edges are joined together.
  • connection of the projections can take place in that over the projections at least one thread, preferably parallel to the other threads, runs and this at least one thread - it can also be several parallel threads - is connected to a part or all projections.
  • At least one thread is placed over the projections after the interlocking of the projections and recesses and then attached to them.
  • the attachment of the at least one thread prior to engagement may be limited to one of the two edges of the first and / or second auxiliary carrier web, but also on both edges, preferably symmetrically in such a way that the thread or the threads up to a half the width (transverse to the longitudinal direction) of the projections go.
  • the shape of the projections and recesses is relatively free. Examples are the EP 1 209 283 A1 refer to.
  • the projections should fill the recesses over the entire surface.
  • the attachment of the at least one thread can be done in various ways, but preferably so that even for this purpose a laser energy-absorptive thread is taken and then it is attached by means of a laser beam to preferably all projections.
  • the threads running over the edges should correspond to the other threads, so be identical to them. Furthermore, the threads should be applied to the edges in a number and at a distance that after the meshing of the projections and recesses, the thread density in the region of the edges does not deviate from the thread density otherwise. Both measures serve to achieve uniform properties across the surface of the felt belt.
  • the invention furthermore relates to a felt belt which has been produced by means of the method according to the invention and accordingly has a carrier embedded in a fiber matrix of at least two yarn layers arranged one above the other, wherein transverse threads are present which are continuous across the width of the felt belt and wherein Threads have the property to absorb laser energy, so that they are at least superficially and at least partially brought to melting temperature by means of laser energy.
  • the longitudinal threads extend at an angle to the longitudinal direction of the felt belt.
  • the oblique position of the longitudinal threads is achieved by the helical winding process during the production of the first longitudinal thread module and optionally further first longitudinal thread modules. It is also possible to wind the first auxiliary carrier sheet in multiple layers, preferably in such a way that the longitudinal threads under a cross very acute angle, suitably so that the angle to the longitudinal direction of the felt belt are equal in magnitude, the course of the longitudinal threads is mirrored so.
  • the property of being able to absorb laser energy can be obtained with the aid of the above-described additives.
  • the threads may be formed as monofilaments, which also bicomponent threads come into question, in which then contains only one of the two components, the additive.
  • the bicomponent filaments should have a core and a surrounding sheath, the additive then being contained only in the sheath.
  • the threads of at least one laid fabric can also be formed as multifilaments consisting of individual filaments.
  • the individual filaments needs to be provided with the additive, with a maximum proportion of 50% being sufficient.
  • the multifilaments stiffen due to the welding of the individual filaments also partially with each other.
  • alternately different threads are used, for example, alternating monofilaments and multifilaments, monofilaments and threads or multifilaments and threads.
  • the material can be used alternately, for example by alternating threads of polyamide 6 and 6.10 or alternating polyamide 6 and 6.12 or alternating polyamide 6.6 and polyester are used.
  • a useful felt tape is already created when only a longitudinal thread and a cross thread Gelgege are present.
  • a higher strength is achieved if the carrier consists of at least two longitudinal thread located and at least one Querfadengelege. But it is also possible a reverse structure of a L jossfadenge privilege and two Querfadengelegen. For high structural requirements at least two Leksfadenge privilege and at least two Querfadenge privilege can be combined. In all cases, it is expedient if the longitudinal thread layer and the transverse thread layer alternate in each case.
  • the transverse threads need not extend exactly at right angles to the longitudinal direction of the felt belt. There is also the possibility that the transverse threads at an angle of 75 ° to 125 °, preferably 80 ° to 100 °, to the longitudinal direction run the felt tape. If the carrier has at least two Querfadengelege, it is possible to arrange the transverse threads so that the transverse threads of a Querfadengeleges and the transverse threads of the other Querfadengeleges intersect, preferably symmetrically, so that the transverse threads of a Querfadengeleges at the same angle from the vertical to the longitudinal direction of the felt belt deviate as the transverse threads of the other Querfadengeleges, only with the opposite sign.
  • the longitudinal threads and / or the transverse threads should have the same distance from each other over the surface to achieve uniform properties. It is expedient if the distance between the longitudinal threads and the distance of the transverse threads is the same. But it can also be different. Likewise, other threads can be used for the longitudinal threads than for the transverse threads, but also identical threads.
  • the device 1 has two spaced rollers 2, 3, which have parallel axes of rotation and are driven in the same direction.
  • a supply roll 4 on which a nonwoven strip 5 low basis weight is wound.
  • the nonwoven strip 5 is withdrawn when driving the rollers 2, 3 and wikkelt on the two rollers 2, 3.
  • the supply roll 4 is moved in the direction of the arrow A, that is parallel to the axes of rotation of the rollers 2, 3.
  • the feed of the supply roll 4 in the direction of arrow A is dimensioned so that the nonwoven strips 5 come to rest on each other.
  • the supply roll 4 is set correspondingly inclined.
  • the winding process is continued until a nonwoven ribbon is produced by means of the nonwoven strip 5, whose width corresponds approximately to the width of the felt before thermosetting, which is to be produced by means of the nonwoven ribbon.
  • FIG. 2 In the enlargement according to FIG. 2 are three partial webs 6, 7, 8 of the nonwoven strip 5 shown. It can be seen that the nonwoven strip 5 - and thus the partial webs 6, 7, 8 - on both longitudinal edges 9, 10 have complementary wave-shaped courses, so that alternately projections - by way of example denoted by 11 - and complementary recesses - exemplified by 12 - arise. In the partial webs 6, 7, the projections 11 and recesses 12 mesh with each other like a tooth, wherein the projections 11 fill the recesses 12 over the entire surface. The partial web 8 is shown spaced from the partial web 7.
  • the device 1 enters the device 1 in such a way that the projections 11 engage in the recesses 12 in the same way as is the case with the adjacent edges 9, 10 of the partial webs 6, 7. Moreover, the left to the sub-web 6 subsequent sub-web is omitted.
  • FIG. 2 how out FIG. 2 can also be seen (and in FIG. 1 not shown), are on the nonwoven strip 5 extending in the longitudinal direction extending longitudinal threads - exemplified by 13 - applied in parallel and at equal distances from each other, the longitudinal edges 9, 10, however, are left threadless.
  • the longitudinal threads 13 are made of a thermoplastic and are provided with an additive that makes them absorbable for laser energy.
  • the longitudinal threads 13 are selectively welded to the nonwoven strip 5 by the action of a transverse reciprocating laser beam.
  • the connection can be made even before winding the FaservlieestNeills 5 on the supply roll 4 in a corresponding device. In this case, there is no pure nonwoven strip 5 on the supply roll 4, but a nonwoven strip 5 provided with longitudinal threads 13.
  • FIG. 2 how out FIG. 2 can be seen, are on the longitudinal edges 9, 10 and the projections 11 three further longitudinal threads - exemplified by 14 - applied. They are identical to the longitudinal threads 13 and thus absorbent for laser energy. They are like the longitudinal threads 13 with a laser beam selectively heated to melting temperature and thereby connect with the projections 11. As a result, the edges 9, 10 and thus the partial webs 6, 7, 8 connected to each other.
  • the longitudinal threads 14 on the longitudinal edges 9, 10 have the same distances from each other and to the adjacent longitudinal threads 13, so that the thread density in the region of the longitudinal edges 9, 10 corresponds to that in the remaining area.
  • a reverse order is selected, that is, first the connection of the partial webs 6, 7, 8 by means of longitudinal threads 14 produced and then the remaining longitudinal threads 13 are applied.
  • This can be done in each case in separate devices, which cause the laying of the longitudinal threads 13, 14 on the one hand and the fastening by means of a laser on the other.
  • this device between the rollers 2, 3 is arranged and at the same time the longitudinal threads 13, 14 are placed next to each other and fixed. In this case, however, it is necessary that the two rollers 2, 3 are moved counter to the direction of the arrow A and the supply roll 4 is held stationary.
  • FIG. 3 shows - in about the scale according to FIG. 1 , but significantly opposite FIG. 2 reduced - a first carrier module 16 fragmentary, which has been prepared by the helical winding process, as it turns out FIG. 1 results in continued until the intended width of the felt belt before thermosetting.
  • carrier module 16 On the still on the device 1 located carrier module 16 then support module sections 17, 16, 19 are placed. These carrier module sections 17, 18, 19 are constructed in the same way as the nonwoven strips 5, from which the first carrier module 16 has been produced.
  • Each consists of a nonwoven web 20, 21, 22, are applied to the transverse threads - for example, each with 23, 24, 25 - applied.
  • the transverse threads 23, 24, 25 are identical to the longitudinal threads 13, 14 of the carrier module 16 (in FIG.
  • the carrier module sections 17, 18, 19 are placed with the transverse threads 23, 24, 25 at the bottom on the first carrier module 16, so that the transverse threads 23, 24, 25 contact the longitudinal threads 13, 14 have.
  • the carrier module sections 17, 18, 19 have transverse edges 26 to 31, - which are left free of transverse threads 23, 24, 25. They are in the same manner as the longitudinal edges 9, 10 of the nonwoven strip 5 with successive projections - exemplified by 32 -, and with complementary recesses - exemplified by 33 - provided.
  • the lower transverse edge 28 of the middle carrier module section 18 is set so that its projections 32 and recesses 33 engage in a tooth-like manner.
  • About the protrusions 32 are three transverse threads - exemplified by 34 - placed and attached to them.
  • about these transverse threads 34 are the two carrier module sections 17, 18 connected to each other. The attachment can also be done here by means of a laser beam.
  • the upper carrier module section 19 is placed on the first carrier module 16.
  • the upper carrier module section 19 must still be displaced towards the central carrier module section 18 in such a way that the projections 32 on the lower transverse edge 30 fit into the recesses 33 on the upper transverse edge 29 of the central carrier module section 18 in the same way between the carrier module sections 17, 18.
  • three more transverse threads can be placed and connected to the projections 32.
  • further carrier module sections are successively applied to the respectively preceding carrier module section and respectively connected thereto until the first carrier module 16 is completely covered by carrier module sections 17, 18, 19.
  • the carrier module sections 17, 18, 19 then form a total of a second carrier module 35.
  • any number of further first and second carrier modules can then be constructed in principle.
  • FIG. 4 shows the combination of the first carrier module 16 with the longitudinal threads 13 and the nonwoven strip 5 and the second carrier module 35, consisting of the Sumododulab Songs 17, 18, 19, which are connected to each other at the edge regions 36, 37 (here in deviation to FIG. 3 only two transverse threads 34 extend over the edge regions 36, 37).
  • the second carrier module 35 and the lower side of the first carrier module 16 are non-woven fabric layers 38, 39. They are connected to the two carrier modules 16, 35 in that the in FIG. 4 shown unit of a needle machine is supplied. There, the fiber layers 38, 39 are compacted to form a fiber matrix and partially introduced into the spaces between the longitudinal and transverse threads 13, 14, 23, 24, 25, 34.
  • thermofixing is an endless felt belt with a carrier 40, consisting of a Leksfadengelege 41 and a Querfadengelege 42, available, which can be used for example as press felt in a paper machine.
  • FIG. 5 shows a modified support 43 with a L Lucassfadengelege 44 and two Querfadengelegen 45, 46.
  • the Leksfadengelege 44 consists of parallel spaced equally spaced longitudinal threads - exemplified by 47 - while the Querfadengelege 45, 46 respectively from parallel and spaced transverse threads are made. Of the transverse threads 48, 49, only a part is shown.
  • the Querfadengelege 45 is disposed on the top and the Querfadengelege 46 on the underside of the Lssensfadengeleges 44.
  • the transverse threads 48 of the Querfadengeleges 45 are at a certain positive angle to the vertical on the longitudinal threads 47 obliquely.
  • the transverse threads 49 of the Querfadenge privileges 46 are set to the same amount, but negative angle to the vertical to the longitudinal threads 47 obliquely.
  • the Leksfadengelege 44 has been obtained by preparing a first carrier module in the manner described above.
  • the Querfadengelege 45, 46 have been prepared by that corresponding carrier module sections on both sides of the first carrier module - or on one side of the carrier module and thus contiguous - have been applied and joined together.
  • the production is carried out in the same manner as in the second support module 35 in the Ausfflhrungsungsform according to the FIGS. 1 to 4 ,
  • the obliquity of the transverse threads 48, 49 has been achieved in that the Triger module sections have been made rectangular before they have been placed obliquely on the first carrier module.
  • FIG. 6 represents an analog representation of FIG. 2 but the manufacturing process is different.
  • the same reference numbers are used for the same parts.
  • partial webs 6, 7, 8 of the nonwoven strip 5 are partially shown.
  • the partial webs 6, 7, 8 each have at both longitudinal edges 9, 10 complementary wavy projections 11 made of nonwoven fabric and complementary recesses 12.
  • the projections 11 and recesses 12 already engage each other like a tooth, while this is not the case with the sub-web 8 in relation to the sub-web 7.
  • nonwoven strip 5 and thus on the partial webs 6, 7, 8 extend in the longitudinal direction longitudinal threads - exemplified with 13 - parallel and at equal distances from each other. They are selectively welded to the nonwoven strip 5 by the action of a transverse reciprocating laser beam.
  • the application of the longitudinal threads 13, 14 on the nonwoven strip 5 can be carried out before the winding of the provided with the longitudinal threads 13, 14 nonwoven strip 5 on the supply roll 4 in a corresponding device.
  • the longitudinal threads 13, 14 applied only during or after unwinding of the nonwoven strip 5 from the supply roll 4 and then the sub-webs 6, 7, 8 adjoin one another such that the projections 11 engage in the recesses 12 like a toothing.
  • the longitudinal threads 14 complement each other by the complete engagement of the projections 11 and recesses 12 such that the thread density in this area is equal to the thread density of the longitudinal threads 13 in the remaining area and in this way uniform L jossfadengelege arises (the fact that the already juxtaposed partial webs 6, 7 in the region of the projections 11 and recesses 12 are covered only by three longitudinal threads 14, while on the projections 11 and recesses 12 of the two not contiguous partial webs 7, 8 in total four longitudinal threads 14 extend, based only on a graphical inaccuracy).
  • the longitudinal threads 14 are connected at the longitudinal edge 9 with the projections 11 at the longitudinal edge 10 by the action of a laser beam.
  • the longitudinal threads 14 are also connected at the longitudinal edge 10 with the projections 11 at the adjacent longitudinal edge 9 by means of lasers.
  • the type of connection of the longitudinal edges 9, 10 described above can also in the connection of the carrier module sections 17, 18, 19 according to FIG. 3 be applied accordingly.
  • the carrier module sections 17, 18, 19 are then not only provided with the transverse threads 23, 24, 25, but additionally - and applied simultaneously with the transverse threads 23, 24, 25 - with transverse threads 34, which extend over the projections 32 and recesses 33 , Only then are the carrier module sections 17, 18, 19 juxtaposed and, like the partial webs 6, 7, 8, connected to one another in the manner described above.

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  • Nonwoven Fabrics (AREA)
  • Paper (AREA)

Claims (37)

  1. Procédé de fabrication d'une bande de feutre avec un support (40, 43) inséré dans une matrice de fibres, composé d'au moins deux non-tissés (41, 42, 44, 45) placés l'un sur l'autre, desquels sont formés au moins un en tant que non-tissé longitudinal (41, 44), composé de fils longitudinaux parallèles (13, 14, 17) et au moins un en tant que non-tissé transversal (42, 45, 46), composé de fils transversaux parallèles (23, 24, 25, 48, 49), sachant que des fils transversaux (23, 24, 25, 48, 49) sont disponibles et continus sur la largeur de la bande de feutre, caractérisé par au moins les étapes suivantes de procédé:
    a) pour chaque non-tissé longitudinal (41, 44), un premier module de support (16) est fabriqué comme suit:
    aa) une première bande porteuse auxiliaire (5) est fabriquée dans une largeur, qui est inférieure à la largeur de la bande de feutre terminée;
    ab) la première bande porteuse auxiliaire (5) est réunie avec les fils (13, 14) qui ont la propriété d'absorber l'énergie laser et de pouvoir être amenés à la température de fusion au moyen de l'énergie laser au moins superficiellement et au moins partiellement;
    ac) sous l'effet d'un rayon laser, les fils (13, 14) sont reliés à la première bande porteuse auxiliaire;
    ad) la première bande porteuse auxiliaire (5) est enroulée avant, pendant ou après la pose des fils, de manière hélicoïdale jusqu'à une largeur qui le cas échéant après la coupe des bords, qui correspond à la largeur nécessaire pour la fabrication de la bande de feutre finie;
    b) pour chaque non-tissé transversal (42, 45, 46), un deuxième module de support (35) recouvrant entièrement le premier est fabriqué comme suit:
    ba) des parties de module de support individuelles (17, 18, 19) sont ensuite fabriquées, avec une extension dans un sens qui correspond à la largeur nécessaire pour la fabrication de la bande de feutre finie;
    bb) les parties de module de support (17, 18, 19) sont respectivement constituées par la combinaison d'une deuxième bande porteuse auxiliaire (20, 21, 22) et avec des fils fixés dessus (23, 24, 25, 48, 49) qui ont la propriété d'absorber l'énergie laser et peuvent être amenés à la température de fusion au moyen de l'énergie laser au moins superficiellement et au moins partiellement;
    bc) la connexion entre la deuxième bande porteuse auxiliaire (20, 21, 22) et les fils (23, 24, 25, 48, 49) a été fabriquée par l'action d'un rayon laser sur les fils (23, 24, 25, 48, 49);
    bd) pour la fabrication d'une bande porteuse, les parties de module de support (17, 18, 19) sur le premier module de support (16) dans son sens longitudinal l'un derrière l'autre, sont placés l'un sur l'autre et de manière contiguë, de manière à ce qu'un deuxième module de support (35) soit élaboré avec des fils (23, 24, 25, 48, 49), qui se prolongent transversalement par rapport aux fils (13, 14) du premier module de support;
    c) pour la fabrication de la bande de feutre, au moins une couche de non-tissé (38, 39) est épinglée sur au moins une face du module de support (16, 35) en formant la matrice de fibres.
  2. Procédé selon revendication 1, caractérisé en ce que des fils (13, 14, 23, 24, 25, 47, 48, 49) sont utilisés, qui contiennent un additif qui donne aux fils (13, 14, 23, 24, 25, 47, 48, 49) un pouvoir absorbant pour le rayon laser.
  3. Procédé selon revendication 1 ou 2, caractérisé en ce que pour les bandes de support auxiliaires (5, 20, 21, 22) un non-tissé et / ou un tissu entrelacé et / ou une feuille est utilisé.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que des non-tissés sont fabriqués avec un poids surfacique de 20 à 150 g/m2, de préférence de 30 à 60 g/m2.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que les fils (13, 14, 23, 24, 25, 47, 48, 49) sont placés parallèlement aux bords latéraux des bandes porteuses auxiliaires (5, 20, 21, 22).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que la première bande de support auxiliaire (5) est fabriquée dans une largeur comprise entre 0,2 m et 1,5 m.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la deuxième bande porteuse auxiliaire (20, 21, 22) est fabriquée dans une extension transversale par rapport aux fils de 0,5 à 6 m.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que la première bande porteuse auxiliaire (5) et / ou les parties de module de support (17, 18, 19) sont reliées les unes aux autres sur leurs bordures contiguës (9, 10, 26 à 31).
  9. Procédé selon revendication 8, caractérisé en ce que les bordures sont placées sont forme d'un recouvrement et sont reliées les unes aux autres dans la zone de recouvrement.
  10. Procédé selon revendication 9, caractérisé en ce que les bordures sont fermées par une couture et / ou soudées et / ou collées les unes avec les autres.
  11. Procédé selon revendication 8, caractérisé en ce que les bordures (9, 10, 26 à 31) sont posées de manière contiguë sur le bord.
  12. Procédé selon revendication 11, caractérisé en ce que les bordures (9, 10, 26 à 31) sont pourvues d'avancées complémentaires se suivant les unes après les autres (11, 32) et de creux (12, 33) et que les bordures (9, 10, 26 à 31) sont placées de manières contiguës les unes par rapport aux autres de telle manière qu'elles s'imbriquent avec leurs avancées (11, 32) et leurs creux et que des avancées (11, 32) des bordures contiguës les unes par rapport aux autres (9, 10, 26 à 31) sont reliées les unes avec les autres.
  13. Procédé selon revendication 12, caractérisé en ce qu'après l'imbrication des avancées (11, 32) et creux (12, 33), au moins un fil (14, 34) est posé sur les avancées (11, 32) et y est fixé.
  14. Procédé selon revendication 12, caractérisé en ce qu'avant l'imbrication des avancées (11, 32) et des creux (12, 33), au moins un fil est posé sur les avancées (11,32) et creux (12, 33) et est fixé sur au moins une bordure (9, 10, 26 à 31) sur les avancées et qu'après l'imbrication des avancées (11, 32) et creux (12, 33), le fil minimum (14, 34) est aussi fixé sur les avancées (11, 32) de la bordure contiguë (9, 10, 26 à 31).
  15. Procédé selon revendication 14, caractérisé en ce que sur les avancées (11, 32) des deux bordures (9, 10, 26 à 31) des bandes porteuses auxiliaires (5, 20, 21, 22) au moins un fil est fixé.
  16. Procédé selon l'une des revendications 12 à 15, caractérisé en ce que les fils (14, 34) passant par les bordures (9, 10, 26 à 31) correspondent aux autres fils (13, 23, 24, 25, 47, 48, 49).
  17. Procédé selon l'une des revendications 12 à 16, caractérisé en ce que les fils (14, 34) sont disposés sur les avancées et dans un nombre et à une distance faisant que l'épaisseur de fil après l'imbrication dans la zone des bordures (9, 10, 26 à 31) ne diffère par ailleurs pas de l'épaisseur de fil.
  18. Bande de feutre, en particulier feutre pour machine à papier avec un support (40, 43) inséré dans une matrice de fibres, composé d'au moins deux non-tissés (41, 42, 44, 45, 46) placés l'un sur l'autre, desquels au moins un est formé en tant que non-tissé longitudinal (41, 44) constitué de fils longitudinaux parallèles (13, 14, 47) et au moins un en tant que non-tissé transversal (42, 45, 46) constitué de fils transversaux parallèles (23, 24, 25, 48, 49), sachant que des fils transversaux (23, 24, 25, 48, 49) sont disponibles, qui sont continus sur la largeur de la bande de feutre et sachant que les fils (13, 14, 23, 24, 25, 47, 48, 49) ont la propriété d'absorber l'énergie laser et d'être mis à température de fusion au moins superficiellement et au moins partiellement à l'aide de l'énergie laser, caractérisée en ce que pour chaque non-tissé longitudinal (41, 44), un module de support (16) est confectionné par l'enroulement hélicoïdal d'au moins une bande porteuse auxiliaire (5) avec les fils longitudinaux (13, 14, 47), de manière à ce que les fils longitudinaux (13, 14, 47) s'étendent de manière angulaire par rapport au sens longitudinal de la bande de feutre.
  19. Bande de feutre selon revendication 18, caractérisée en ce que les fils longitudinaux et les fils transversaux sont seulement posés les uns au-dessus des autres.
  20. Bande de feutre selon revendication 18 ou 19, caractérisé en ce que les fils (13, 14, 23, 24, 25, 47, 48, 49) contiennent un additif qui leur donne la capacité d'absorption de l'énergie laser.
  21. Bande de feutre selon l'une des revendications 18 à 20, caractérisée en ce que les fils (13, 14, 23, 24, 25, 47, 48, 49) d'au moins un non-tissé (41, 42, 44, 45, 46), sont formées en tant que monofilaments.
  22. Bande de feutre selon l'une des revendications 18 à 21, caractérisée en que les fils d'au moins un non-tissé sont formés en tant que multifilaments constitués de filaments individuels.
  23. Bande de feutre selon l'une des revendications 18 à 22, caractérisée en ce que les fils d'au moins un non-tissé sont formés en tant que retors monofilaments constitués d'au moins deux monofilaments.
  24. Bande de feutre selon revendication 20 et revendication 21 ou 22, caractérisée en ce qu'au maximum la moitié des filaments individuels ou monofilaments sont pourvus de l'additif.
  25. Bande de feutre selon l'une des revendications 18 à 24, caractérisé en ce que différents fils alternants sont prévus.
  26. Bande de feutre selon revendication 25, caractérisée en ce que des fils alternants en polyamide 6 et 6.10 ou des fils alternants en polyamide 6 et 6.12 ou des fils alternants en polyamide 6.6 et polyester sont disponibles.
  27. Bande de feutre selon revendication 25 ou 26, caractérisée en ce que des monofilaments et retors alternants, les retors et monofilaments alternants ou des monofilaments et multifilaments alternants sont prévus.
  28. Bande de feutre selon l'une des revendications 18 à 27, caractérisée en ce que le support est composé d'au moins deux non-tissés longitudinaux et au moins un non-tissé transversal.
  29. Bande de feutre selon l'une des revendications 18 à 27, caractérisée en ce que le support (43) est composé d'au moins un non-tissé longitudinal (44) et d'au moins deux non-tissés transversaux (45, 46).
  30. Bande de feutre selon l'une des revendications 18 à 28, caractérisée en ce que le support est composé d'au moins deux non-tissés longitudinaux et deux non-tissés transversaux.
  31. Bande de feutre selon l'une des revendications 18 à 30, caractérisée en ce que des non-tissés longitudinaux (44) et non-tissés transversaux (46, 46) alternent entre eux.
  32. Bande de feutre selon l'une des revendications 18 à 31, caractérisée en ce que les fils transversaux (23, 24, 25, 48, 49) s'étendent dans un angle de 75° à 120°, de préférence 80° à 100°, par rapport au sens longitudinal de la bande de feutre.
  33. Bande de feutre selon revendication 32, caractérisée en ce que les fils transversaux (23, 24, 25, 48, 49) s'étendent dans un angle par rapport au sens longitudinal de la bande de feutre, qui est supérieur ou inférieur à 90°.
  34. Bande de feutre selon l'une des revendications 18 à 33, caractérisée en ce que le support (43) présente au moins deux non-tissés transversaux (45, 46) et les fils transversaux (48) d'un non-tissé transversal (45) et les fils transversaux (49) de l'autre non-tissé transversal (46) se croisent.
  35. Bande de feutre selon revendication 34, caractérisé en ce que les fils transversaux (48) d'un non - tissé transversal (45) diffèrent des verticales par rapport au sens longitudinal de la bande de feutre selon le même angle que les fils transversaux (49) de l'autre non-tissé transversal (46).
  36. Bande de feutre selon l'une des revendications 18 à 35, caractérisée en ce que les fils longitudinaux (13, 14, 47) et / ou les fils transversaux (23, 24, 25, 48, 49) ont la même distance les uns par rapport aux autres.
  37. Bande de feutre selon revendication 36, caractérisée en ce que la distance des fils longitudinaux (13, 14, 47) et la distance des fils transversaux (23, 24, 25, 48, 49) est identique.
EP07005050A 2006-03-21 2007-03-12 Procédé destiné à la fabrication d'une bande de feutre et une bande de feutre Active EP1837440B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL07005050T PL1837440T3 (pl) 2006-03-21 2007-03-12 Sposób wytwarzania taśmy filcowej oraz taśma filcowa
EP07005050A EP1837440B1 (fr) 2006-03-21 2007-03-12 Procédé destiné à la fabrication d'une bande de feutre et une bande de feutre

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06005717 2006-03-21
DE200620004624 DE202006004624U1 (de) 2006-03-21 2006-03-21 Filzband, insbesondere Papiermaschinenfilz
EP07005050A EP1837440B1 (fr) 2006-03-21 2007-03-12 Procédé destiné à la fabrication d'une bande de feutre et une bande de feutre

Publications (2)

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EP1837440A1 EP1837440A1 (fr) 2007-09-26
EP1837440B1 true EP1837440B1 (fr) 2011-09-28

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PL (1) PL1837440T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE507348T1 (de) 2007-12-04 2011-05-15 Heimbach Gmbh & Co Kg Verfahren zur herstellung eines maschinenfilzes sowie maschinenfilz
DE102008000915A1 (de) 2008-04-01 2009-10-08 Voith Patent Gmbh Pressfilz und Verfahren zu seiner Herstellung
DE102008002392A1 (de) 2008-06-12 2009-12-17 Voith Patent Gmbh Verfahren zur Herstellung eines Papiermaschinenbandes
WO2010057802A2 (fr) 2008-11-19 2010-05-27 Voith Patent Gmbh Toile de machine à papier et son procédé de réalisation
DE102008043855A1 (de) 2008-11-19 2010-05-20 Voith Patent Gmbh Papiermaschinenbespannung und Verfahren zu deren Herstellung
DE102008043917A1 (de) 2008-11-20 2010-05-27 Voith Patent Gmbh Pressfilz und Verfahren zu seiner Herstellung
DE202009010898U1 (de) 2009-04-03 2010-02-18 Voith Patent Gmbh Papiermaschinenbespannung
DE202012100695U1 (de) 2012-02-29 2013-03-07 Heimbach Gmbh & Co. Kg Technisches Textilband
EP3036372B1 (fr) 2013-08-23 2019-07-10 Voith Patent GmbH Habillage et procédé pour sa fabrication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781967A (en) * 1987-10-07 1988-11-01 The Draper Felt Company, Inc. Papermaker press felt
SE468602B (sv) * 1990-12-17 1993-02-15 Albany Int Corp Pressfilt samt saett att framstaella densamma
EP1359251B1 (fr) * 2002-04-25 2005-06-29 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. Toile de séchage et procédé de sa production

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PL1837440T3 (pl) 2012-03-30
EP1837440A1 (fr) 2007-09-26

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