EP0282379B1 - Method for manufacturing wet felts, and machine for compacting fibre webs - Google Patents

Method for manufacturing wet felts, and machine for compacting fibre webs Download PDF

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Publication number
EP0282379B1
EP0282379B1 EP88400342A EP88400342A EP0282379B1 EP 0282379 B1 EP0282379 B1 EP 0282379B1 EP 88400342 A EP88400342 A EP 88400342A EP 88400342 A EP88400342 A EP 88400342A EP 0282379 B1 EP0282379 B1 EP 0282379B1
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EP
European Patent Office
Prior art keywords
needle
machine
fleece
canvas
roller
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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EP88400342A
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German (de)
French (fr)
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EP0282379A1 (en
Inventor
Marcel Dufour
Jacques Piat
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COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
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COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
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Application filed by COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA filed Critical COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Priority to AT88400342T priority Critical patent/ATE71163T1/en
Publication of EP0282379A1 publication Critical patent/EP0282379A1/en
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    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • 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
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3707—Woven fabric including a nonwoven fabric layer other than paper
    • Y10T442/3724—Needled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3707—Woven fabric including a nonwoven fabric layer other than paper
    • Y10T442/3724—Needled
    • Y10T442/3732—Including an additional nonwoven fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3707—Woven fabric including a nonwoven fabric layer other than paper
    • Y10T442/378—Coated, impregnated, or autogenously bonded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3707—Woven fabric including a nonwoven fabric layer other than paper
    • Y10T442/378—Coated, impregnated, or autogenously bonded
    • Y10T442/3789—Plural nonwoven fabric layers

Definitions

  • the present invention relates to a process for the manufacture of wet stationery felts in which a web consisting of one or more fiber veils is fixed on at least one of the sides of a canvas.
  • successive layers of fiber veils emerging from a card are deposited directly on the base stretched over the needling machine.
  • the canvas is in continuous motion and passes under the head of needles so that the tablecloth deposited is needled in the canvas immediately.
  • a sheet is prefabricated which will then be deposited on the base and needled on it.
  • the veil of fibers emerging from the card is deposited on a moving carpet which brings the sheet formed of successive layers under the needle head of a pre-needling machine which gives a cohesion making it possible to form a roll of sheets which will be then unrolled on the canvas in the needling machine to form the felt.
  • the method according to the invention making it possible to avoid the use of a deep needling is characterized in that said webs obtained by carding the fibers and possibly pre-needled by a passage through a pre-needling machine having a low needle density are densified by at least three passages in a needling machine with a high density of needles, at least one of the passages ensuring needling in the opposite direction to the others, said ply thus formed being then fixed to the canvas.
  • the sheets thus densified have a very high resistance in the direction of the length and the width.
  • the invention also relates to a machine for densifying the plies, characterized in that it comprises a needling machine with a head with a high density of needles, means for receiving the needled ply at the outlet of the needling machine, comprising a removable roller driven in rotation on which is wound the web leaving the needling machine, means for feeding the needling machine comprising a removable roller identical to the roller disposed at the outlet on which the already needled web can be wound and means in translation to bring this sheet under the head of the needling machine, said output roller can be driven in both directions of rotation.
  • Figure 1 shows a tablecloth densification machine which comprises a needling machine 1, provided with a head 2 of high density needles. This 40 cm wide head will have approximately 3,000 needles per meter of length. Note that in the low density pre-needling machines there are only 1000 needles per meter in length for a head 40 cm wide.
  • the head 2 is arranged above a matrix 3.
  • a mat 4 is used to bring the sheet 5 between head 2 and matrix 3.
  • a roller 6 is arranged driven by motor rollers 7.
  • the needled web 5 is wound around the roller 6.
  • rollers 6 and 8 are removable and identical and the rollers 7 can change the direction of rotation.
  • rollers 9 are also provided at the entrance above the carpet.
  • a pre-needled ply 5 is placed around the roller 8.
  • This ply 5 is unwound between the head 2 and the matrix 3 of the needling machine which also needles, for example the location of the ply.
  • This ply 5 is wound around the roller 6.
  • the roller 6 is dismantled and put in place of the roller 8, the roller 8 which is empty takes the place of the roller 6.
  • a new passage of the tablecloth is made through the needling machine 1 needling this time the reverse side of the tablecloth.
  • the output roller is rotated in the opposite direction (see FIG. 2) so that the third and last pass will allow needling of the reverse side of the web like the second pass.
  • this ply or plies are fixed to a canvas (10) by needling or possibly gluing.

Abstract

Process of manufacturing felts in which a batt is fastened to a felt on its one or two sides, said batt (5) consisting of one or several layers of fibers and characterized in that said layers are obtained from carding the fibers and possibly preneedling them by passage through a preneedling machine with low density needles, said layers being densified by at least three passages through a needling machine (1) with high needle density, and at least one of those passages going in the opposite direction of the others, said batt (5) created in such a way then being fastened to the felt (10). The wet felt obtained in this way has very good cohesion and very high resistance, and the felt is neither damaged nor filled with fibers, which provides it with good air and water permeability. The invention also relates to a machine to densify batts.

Description

La présente invention concerne un procédé de fabrication de feutres humides de papeterie dans lequel on fixe sur au moins un des côtés d'un canevas une nappe constituée d'un ou plusieurs voiles de fibres.The present invention relates to a process for the manufacture of wet stationery felts in which a web consisting of one or more fiber veils is fixed on at least one of the sides of a canvas.

Dans les procédés connus la fixation sur le canevas se fait par aiguilletage. Ces procédés sont de deux types.In known methods, the attachment to the canvas is by needling. These methods are of two types.

Selon un premier type on dépose directement sur la base tendue sur l'aiguilleteuse des couches successives de voiles de fibres sortant d'une carde. Le canevas est en mouvement continu et passe sous la tête d'aiguilles si bien que la nappe déposée se trouve aiguilletée dans le canevas immédiatement.According to a first type, successive layers of fiber veils emerging from a card are deposited directly on the base stretched over the needling machine. The canvas is in continuous motion and passes under the head of needles so that the tablecloth deposited is needled in the canvas immediately.

Selon le second type on préfabrique une nappe qui sera ensuite déposée sur la base et aiguilletée sur celle-ci. Dans ce cas, le voile de fibres sortant de la carde est déposé sur un tapis en mouvement qui amène la nappe formée de couches successives sous la tête d'aiguilles d'une préaiguilleteuse qui donne une cohésion permettant de former un rouleau de nappes qui sera ensuite déroulé sur le canevas dans l'aiguilleteuse pour former le feutre.According to the second type, a sheet is prefabricated which will then be deposited on the base and needled on it. In this case, the veil of fibers emerging from the card is deposited on a moving carpet which brings the sheet formed of successive layers under the needle head of a pre-needling machine which gives a cohesion making it possible to form a roll of sheets which will be then unrolled on the canvas in the needling machine to form the felt.

Pour pouvoir fixer correctement les nappes sur le canevas et leur donner une bonne cohésion on est obligé de prévoir un aiguilletage poussé de ces nappes sur le canevas.To be able to fix the tablecloths correctly on the canvas and give them good cohesion, it is necessary to provide a thorough needling of these tablecloths on the canvas.

Or les inventeurs ont remarqué qu'en procèdant ainsi le canevas d'une part se détériore par pénétration des aiguilles et d'autre part est bouché par les fibres de la nappe ce qui diminue fortement les caractéristiques de perméabilité à l'air et à l'eau.However, the inventors have noticed that by doing so the canvas on the one hand deteriorates by penetration of the needles and on the other hand is blocked by the fibers of the sheet which greatly reduces the characteristics of air permeability and 'water.

Le procédé selon l'invention permettant d'éviter l'emploi d'un aiguilletage poussé est caractérisé en ce que lesdits voiles obtenus par cardage des fibres et éventuellement préaiguilletés par un passage à travers une préaiguilleteuse ayant une faible densité d'aiguilles sont densifiées par au moins trois passages dans une aiguilleteuse à forte densité d'aiguilles, l'un au moins des passages assurant un aiguilletage dans le sens inverse des autres, ladite nappe ainsi formée étant ensuite fixée au canevas.The method according to the invention making it possible to avoid the use of a deep needling is characterized in that said webs obtained by carding the fibers and possibly pre-needled by a passage through a pre-needling machine having a low needle density are densified by at least three passages in a needling machine with a high density of needles, at least one of the passages ensuring needling in the opposite direction to the others, said ply thus formed being then fixed to the canvas.

Les nappes ainsi densifiées présentent une très forte résistance dans le sens de la longueur et de la largeur.The sheets thus densified have a very high resistance in the direction of the length and the width.

On peut donc fixer ces nappes par un léger aiguilletage sur le canevas ou même éventuellement les fixer par collage chimique et/ou thermique par soudure.We can therefore fix these sheets by a light needling on the canvas or even possibly fix them by chemical and / or thermal bonding by welding.

Il n'est plus nécessaire de faire subir au canevas revêtu des nappes de nombreux passages d'aiguilletage pour donner aux nappes de la cohésion; un ou deux passages suffisent.It is no longer necessary to subject the canvas coated with plies with numerous needling passages in order to give the plies cohesion; one or two passes are sufficient.

Dans le cas de feutre humide ouvert, l'existence de nappe densifiée permet de réaliser une bavette recouvrant la zone de jonction qui soit suffisamment résistante.In the case of open wet felt, the existence of a densified sheet makes it possible to produce a flap covering the junction zone which is sufficiently resistant.

Pour augmenter encore la résistance des nappes on les arme lors de leur fabrication de fibres et/ou de fils résistants selon le sens de la machine et/ou en travers.To further increase the resistance of the plies, they are armed during their manufacture of fibers and / or resistant wires depending on the direction of the machine and / or crosswise.

L'invention a également pour objet une machine servant à densifier les nappes caractérisée en ce qu'elle comporte une aiguilleteuse avec une tête à forte densité d'aiguilles, des moyens de réception de la nappe aiguilletée à la sortie de l'aiguilleteuse comportant un rouleau démontable entraîné en rotation sur lequel s'enroule la nappe sortant de l'aiguilleteuse, des moyens d'alimentation de l'aiguilleteuse comportant un rouleau démontable identique au rouleau disposé à la sortie sur lequel peut être enroulée la nappe déjà aiguilletée et des moyens de translation pour amener cette nappe sous la tête de l'aiguilleteuse, ledit rouleau de sortie pouvant être entraîne dans les deux sens de rotation.The invention also relates to a machine for densifying the plies, characterized in that it comprises a needling machine with a head with a high density of needles, means for receiving the needled ply at the outlet of the needling machine, comprising a removable roller driven in rotation on which is wound the web leaving the needling machine, means for feeding the needling machine comprising a removable roller identical to the roller disposed at the outlet on which the already needled web can be wound and means in translation to bring this sheet under the head of the needling machine, said output roller can be driven in both directions of rotation.

L'invention va maintenant être décrite plus en détail en se référant à un mode de réalisation particulier cité à titre d'exemple non limitatif et représenté par les dessins annexés.

  • La figure 1 représente une machine de densification des nappes selon l'invention.
  • La figure 2 représente un fonctionnement particulier de la machine de la figure 1.
  • La figure 3 représente un feutre fabriqué selon le procédé de l'invention.
The invention will now be described in more detail with reference to a particular embodiment cited by way of nonlimiting example and represented by the accompanying drawings.
  • FIG. 1 represents a machine for densifying the layers according to the invention.
  • FIG. 2 represents a particular operation of the machine of FIG. 1.
  • FIG. 3 represents a felt made according to the method of the invention.

La figure 1 représente une machine de densification des nappes qui comporte une aiguilleteuse 1, munie d'une tête 2 d'aiguilles à forte densité. Cette tête large de 40 cm aura par mètre de longueur environ 3 000 aiguilles. A noter que dans le préaiguilleteuses à faible densité il n'y a que 1000 aiguilles par mètre de longueur pour une tête de 40 cm de large.Figure 1 shows a tablecloth densification machine which comprises a needling machine 1, provided with a head 2 of high density needles. This 40 cm wide head will have approximately 3,000 needles per meter of length. Note that in the low density pre-needling machines there are only 1000 needles per meter in length for a head 40 cm wide.

La tête 2 est disposée au-dessus d'une matrice 3.The head 2 is arranged above a matrix 3.

Un tapis 4 sert à amener la nappe 5 entre tête 2 et matrice 3.A mat 4 is used to bring the sheet 5 between head 2 and matrix 3.

A la sortie de l'aiguilleteuse est disposé un rouleau 6 entraîné par des rouleaux moteurs 7. La nappe aiguilletée 5 s'enroule autour du rouleau 6.At the outlet of the needling machine, a roller 6 is arranged driven by motor rollers 7. The needled web 5 is wound around the roller 6.

A l'entrée on a disposé un rouleau 8 de même taille que le rouleau 6 au-dessus du tapis 4.At the entrance, a roller 8 of the same size as the roller 6 was placed above the carpet 4.

Les rouleaux 6 et 8 sont démontables et identiques et les rouleaux 7 peuvent changer de sens de rotation.The rollers 6 and 8 are removable and identical and the rollers 7 can change the direction of rotation.

On a prévu également d'autre rouleaux 9 à l'entrée au dessus du tapis.Other rollers 9 are also provided at the entrance above the carpet.

Le fonctionnement de la machine selon l'invention est le suivant:The operation of the machine according to the invention is as follows:

On dispose une nappe 5 préaiguilletée autour du rouleau 8. On déroule cette nappe 5 entre la tête 2 et la matrice 3 de l'aiguilleteuse qui aiguillette aussi par exemple l'endroit de la nappe. Cette nappe 5 est enroulée autour du rouleau 6. On démonte le rouleau 6 et on le met à la place du rouleau 8, le rouleau 8 qui est vide prend la place du rouleau 6.A pre-needled ply 5 is placed around the roller 8. This ply 5 is unwound between the head 2 and the matrix 3 of the needling machine which also needles, for example the location of the ply. This ply 5 is wound around the roller 6. The roller 6 is dismantled and put in place of the roller 8, the roller 8 which is empty takes the place of the roller 6.

On fait un nouveau passage de la nappe à travers l'aiguilleteuse 1 aiguilletant cette fois-ci l'envers de la nappe.A new passage of the tablecloth is made through the needling machine 1 needling this time the reverse side of the tablecloth.

Mais on fait tourner le rouleau de sortie en sens inverse (voir figure 2) si bien que le troisième et dernier passage permettra un aiguilletage de l'envers de la nappe comme le second passage.However, the output roller is rotated in the opposite direction (see FIG. 2) so that the third and last pass will allow needling of the reverse side of the web like the second pass.

On a en effet remarqué qu'on obtenait une très bonne densification aiguilletant dans le même sens les deux derniers passages qui est le sens inverse de l'aiguilletage de l'antépenultième passage avant la fin du traitement.It has in fact been noted that very good densification is obtained by needling the last two passages in the same direction, which is the opposite direction from the needling of the antepenultimate passage before the end of the treatment.

Pour le premier passage lorsqu'on part de plusieurs voiles et non d'une nappe préaiguilletée, ces voiles sont enroulés sur les rouleaux 8 et 9 et sont déroulées par le tapis 4 sous la tête 2 de l'aiguilleteuse 1.For the first passage when starting from several sails and not from a pre-needled web, these sails are wound on the rollers 8 and 9 and are unwound by the belt 4 under the head 2 of the needling machine 1.

Une fois les nappes supérieures (5) et/ou inférieures (5′) densifiées cette nappe ou ces nappes sont fixées sur un canevas (10) par aiguilletage ou éventuellement collage.Once the upper (5) and / or lower (5 ′) plies have been densified, this ply or plies are fixed to a canvas (10) by needling or possibly gluing.

Pour terminer le feutre il n'est nécessaire que de prévoir une ou deux passes d'aiguilletage supplémentaire ce qui évite d'endommager le canevas et de l'obturer par des fibres.To finish the felt it is only necessary to provide one or two additional needling passes which avoids damaging the canvas and closing it with fibers.

On peut aussi fabriquer des feutres fermés mais également des feutres ouverts tels que décrits par exemple dans le document EU-A n° 15105.It is also possible to manufacture closed felts but also open felts as described for example in document EU-A No. 15105.

Claims (5)

1. Method of manufacturing felt in which there is fixed to one or both sides of a canvas a fleece (5) in the form of one or more fibre webs characterised in that said webs obtained by carding fibres and optionally pre-needle bonded by passing them through a pre-needle-felting machine with a low needle density are densified by at least three passages through a high needle density needle-felting machine (1), at least one pass procuring needle bonding in the opposite direction to the others, said fleeces (5) obtained in this way being then fixed to the canvas (10).
2. Method of manufacturing felt according to claim 1 in which the last two passes procure needle bonding in the opposite direction to the antipenultimate pass before the end of densification.
3. Method of manufacturing felts according to claim 1 or claim 2 characterised in that the fleece (5) is needle bonded to the canvas (10).
4. Method according to any one of the preceding claims characterised in that before it is fixed to the canvas (10) the fleece (5) is reinforced with strong fibres and/or filaments arranged in the machine direction and/or crosswise direction.
5. Machine for densifying fleeces characterised in that it comprises a needle-felting machine (1) with a high needle density head (2), means for receiving the needle bonded fleece (5) at the output of the needle-felting machine (1) comprising a demountable roller (6, 8) driven in rotation onto which the fleece (5) leaving the needle-felting machine (1) is wound, feed means (4, 8, 9) of the needle-felting machine (1) comprising a demountable roller (8, 6) identical to the roller at the exit (6, 8) onto which the already needle bonded fleece can be rolled and translation means for feeding said fleece (5) under the head of the needle-felting machine (1), said output roller (6, 8) being reversible.
EP88400342A 1987-03-02 1988-02-16 Method for manufacturing wet felts, and machine for compacting fibre webs Expired - Lifetime EP0282379B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400342T ATE71163T1 (en) 1987-03-02 1988-02-16 PROCESS FOR THE MANUFACTURE OF WET FELTS AND DEVICE FOR COMPRESSING FIBER WEB.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8702777 1987-03-02
FR8702777A FR2611752B1 (en) 1987-03-02 1987-03-02 METHOD FOR MANUFACTURING WET FELT AND TABLECLOTH DENSIFICATION MACHINE

Publications (2)

Publication Number Publication Date
EP0282379A1 EP0282379A1 (en) 1988-09-14
EP0282379B1 true EP0282379B1 (en) 1992-01-02

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EP88400342A Expired - Lifetime EP0282379B1 (en) 1987-03-02 1988-02-16 Method for manufacturing wet felts, and machine for compacting fibre webs

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US (1) US4842929A (en)
EP (1) EP0282379B1 (en)
KR (1) KR880011393A (en)
AT (1) ATE71163T1 (en)
CA (1) CA1311115C (en)
DE (1) DE3867261D1 (en)
ES (1) ES2028308T3 (en)
FI (1) FI880904A (en)
FR (1) FR2611752B1 (en)
GR (1) GR3003561T3 (en)
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US4892780A (en) * 1987-07-16 1990-01-09 Cochran William H Fiber reinforcement for resin composites
US5657797A (en) * 1996-02-02 1997-08-19 Asten, Inc. Press felt resistant to nip rejection
US5791028A (en) * 1997-09-03 1998-08-11 Valmet Inc. Reciprocating hydroenhancement system
DE10011231A1 (en) * 2000-03-08 2001-09-13 Dilo Kg Maschf Oskar Method and device for structuring a nonwoven web
US7267745B2 (en) * 2004-09-03 2007-09-11 Voith Fabrics, Inc. Papermakers felt having a point-bonded web layer formed of coarse fibers
US20080190510A1 (en) * 2007-02-09 2008-08-14 Ralf Burbaum High density press fabric
CN103255588B (en) * 2013-05-13 2016-08-10 新疆阿勒泰工业用呢有限责任公司 Preshrinking machine blanket and processing technology thereof
CN103243486A (en) * 2013-05-15 2013-08-14 苏州新协力特种工业模板有限公司 Non-woven fabric needling machine

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US1742338A (en) * 1927-09-08 1930-01-07 American Hair & Felt Company Method of making carpet cushions
US3192598A (en) * 1961-01-03 1965-07-06 Novo Ind Corp Method of making a filter element
DE1225876B (en) * 1961-11-09 1966-09-29 Freudenberg Carl Fa Device for needling loose fiber fleeces
FR1392540A (en) * 1963-01-11 1965-03-19 Huyck Corp Felt for papermaking machine, method and apparatus for making such felt
GB992895A (en) * 1963-01-11 1900-01-01
AT256491B (en) * 1965-01-27 1967-08-25 Fehrer Maschf Dr Ernst Device for needling hair or fiber fleeces or the like.
US4342802A (en) * 1981-01-02 1982-08-03 Ozite Corporation Floor covering of needled woven fabric and nonwoven batt
AT375101B (en) * 1982-12-10 1984-07-10 Fehrer Textilmasch DEVICE FOR PRODUCING ENDLESS, NEEDLEED PAPER MACHINE FELTS
FI89189C (en) * 1986-02-22 1994-07-12 Hoechst Ag Laminate Foer anvaendning som stoedskikt Foer taeck och insuleringsmaterial Foer tak
US4764417A (en) * 1987-06-08 1988-08-16 Appleton Mills Pin seamed papermakers felt having a reinforced batt flap

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ATE71163T1 (en) 1992-01-15
NO168374C (en) 1992-02-12
KR880011393A (en) 1988-10-28
FR2611752B1 (en) 1989-05-05
ES2028308T3 (en) 1992-07-01
NO880884D0 (en) 1988-02-29
CA1311115C (en) 1992-12-08
ZA881475B (en) 1988-08-23
FI880904A0 (en) 1988-02-26
US4842929A (en) 1989-06-27
DE3867261D1 (en) 1992-02-13
GR3003561T3 (en) 1993-03-16
FI880904A (en) 1988-09-03
EP0282379A1 (en) 1988-09-14
NO880884L (en) 1988-09-05
NO168374B (en) 1991-11-04
FR2611752A1 (en) 1988-09-09

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