WO1985000840A1 - Process for heat-sealing a layer of pervious material on a support formed of interwoven threads and felts for paper machine and filter fabrics produced thereby - Google Patents

Process for heat-sealing a layer of pervious material on a support formed of interwoven threads and felts for paper machine and filter fabrics produced thereby Download PDF

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Publication number
WO1985000840A1
WO1985000840A1 PCT/FR1984/000187 FR8400187W WO8500840A1 WO 1985000840 A1 WO1985000840 A1 WO 1985000840A1 FR 8400187 W FR8400187 W FR 8400187W WO 8500840 A1 WO8500840 A1 WO 8500840A1
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WO
WIPO (PCT)
Prior art keywords
layer
support
special
threads
felt
Prior art date
Application number
PCT/FR1984/000187
Other languages
French (fr)
Inventor
Maurice Gauthier
Original Assignee
Cofpa Compagnie Des Feutres Pour Papeteries Et Des
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cofpa Compagnie Des Feutres Pour Papeteries Et Des filed Critical Cofpa Compagnie Des Feutres Pour Papeteries Et Des
Publication of WO1985000840A1 publication Critical patent/WO1985000840A1/en
Priority to FI851290A priority Critical patent/FI86657C/en
Priority to NO851312A priority patent/NO160727C/en

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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

Definitions

  • the present invention relates to a method of bonding a layer of permeable material on a support consisting of threads linked to one another. teln such a process is described in document GB-A 994914.
  • the support comprises special thermoplastic wires which are heated so as to melt them before the permeable layer is applied thereto.
  • This process has the drawback of partially destroying the texture of the support since certain special yarns are completely melted.
  • the bonding has imperfections because the molten material ther osplastic when the wire is completely melted spreads irregularly between the remaining wires of the support and the layer of permeable material.
  • the process according to the invention which does not have these drawbacks is characterized in that, during the manufacture of the support, special yarns having a core and an outer thermoplastic part whose melting point is lower than that of the core and those of the other wires and in that the said fac is heated until the external part of the said special wires is fused, then the layer of permeable material is applied to this face.
  • the present invention is particularly advantageous for the manufacture of felts for stationery in which the permeable layer makes it possible inter alia to remove the marking of the sheet of paper under the effect of pressure and to transport the water extracted from the sheet of paper that we manufacture.
  • Stationery felts are usually manufactured by fixa ⁇ tion by needling of the layer of permeable material consisting of fibers bonded together on a support of woven threads (even if a additional bonding between support and permeable layer is carried out as described in document DT-A 1807329.
  • the felt thus formed has several defects. First of all, its permeability has decreased since fibers have been introduced into the support.
  • the layer of permeable material is compacted and provided with numerous small funnels at the places where the needles have penetrated.
  • the desired support can be chosen by using, for example, threads resistant to chemical degradation and even if their toughness is low enough, there is no longer any risk of it being reduced by needling below a prohibitive value.
  • weft threads will preferably constitute the weft threads of the heated face, said threads then being perpendicular to the direction of unwinding of the felt.
  • the method according to the invention is also very advantageous for the manufacture of filter fabrics in which the permeable layer is used to filter a liquid or a gas and to retain impurities specifically when the support which gives the mechanical characteristics is provided with means of joining.
  • FIG. 1 and 2 show a support and a layer used in the method according to the invention.
  • FIG. 3 schematically represents a device for implementing the method according to the invention.
  • the woven support 20 has warp threads 1 ', 2', 3 ', 4 ", 5', 6 ', 7', 8 'of period eight, and weft threads 1, 2, 3, 4, 5 , 6,
  • the weft threads 1, 3, 4, 6, 7, 9, 10, 12 in relief are special bicomponent monofilament threads. They have a polyester core 24 surrounded by a polyamide 6 sheath 25.
  • the other warp threads T, 2 ', 3', 4 ", 5 ', 6', 7 ', 8' and weft 2, 5 , 8, 11 are made of polyester.
  • the melting point of polyester is 230 ° C and that of polyamide 6 is 180 ° C.
  • the support can be made by weaving, knitting, assembling
  • the special two-component yarns comprise a core composed of a monofilament or of several filaments or even of threads of cut fibers and an external part surrounding the core which may be a sheath or threads surrounding the core having a lower melting point to that of the core and of the other wires constituting the support.
  • the layer of permeable material is chosen according to the desired characteristics of the final product.
  • This layer 26 can consist of continuous or discontinuous fibers linked together by needling, by fusion, by impregnation with resin, etc. It could also consist of an extruded film which is or has been rendered permeable to fluid.
  • the support 20 can end at each end by joining means 23 (loops, spirals, etc.).
  • the device making it possible to implement the invention comprises heating elements, for example infrared 30, two rollers 31 "32, the first of which has its fixed axis and the second of which is applied against the first, a heated cylinder 33 and return rollers 34, 35 and a tensioner 36.
  • heating elements for example infrared 30, two rollers 31 "32, the first of which has its fixed axis and the second of which is applied against the first, a heated cylinder 33 and return rollers 34, 35 and a tensioner 36.
  • the permeable layer 26 is wound on a cylinder 37.
  • the support is mounted on the rollers 34, 35, and on the tenor 36 it passes between the rollers 31, 32 and around the cylinder 31.
  • the cylinder 31 is driven.
  • the face 21 with the special wires of the support passes under the heating elements 30 which heats it to a temperature which melts the external part of the special wires (for example 200 ° C.).
  • the permeable layer 26 is applied by the roller 32 to the face 21 with the molten wires.
  • the layer 26 adheres to the support 21 and the assembly of layer 26 and support 20 is wound around the cylinder 33 (layer 26 against the cylinder 33) which is heated to low temperature (120 ° C.)

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Filtering Materials (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Process for heat-sealing a layer of pervious material (26) to a support (20) formed of interwoven threads characterized in that during the fabrication of the support (20) there are provided on one side (21) special threads having a core and a thermoplastic outer part of which the melting temperature is lower than that of the core and than those of other threads, and in that the side (21) is heated until the outer part of the special threads is melted, whereafter the layer (26) is applied to said side. The mechanical and tightness qualities of the support and of the layer have thereby been preserved. Utilization of the process for the making of paper felts and filter fabrics.

Description

Procédé' de collage d'une couche de matière perméable sur un suppo constitué de fils liés entre eux et feutres pour machine à papier tissus filtrants ainsi fabriqués Method 'of gluing a layer of permeable material on a suppo consisting of threads linked together and felts for paper machine filter cloths thus produced
La présente invention a trait à un procédé de collage d'u couche de matière perméable sur un support constitué de fils liés ent eux. ϋn tel procédé est décrit dans le document GB-A 994914. Dans ce procédé le support comporte des fils spéciaux en therm plastique qui sont chauffés de façon à les mettre en fusion avant q la couche perméable y soit appliquée.The present invention relates to a method of bonding a layer of permeable material on a support consisting of threads linked to one another. teln such a process is described in document GB-A 994914. In this process, the support comprises special thermoplastic wires which are heated so as to melt them before the permeable layer is applied thereto.
Ce procédé présente l'inconvénient de détruire partiellement l texture du support puisque certains fils spéciaux sont complètemen fondus. De plus le collage présente des imperfections car la matièr fondue ther osplastique lorsque le fil est complètement fondu s répand d'une façon irrégulière entre les fils restants du support et l couche de matière perméable.This process has the drawback of partially destroying the texture of the support since certain special yarns are completely melted. In addition, the bonding has imperfections because the molten material ther osplastic when the wire is completely melted spreads irregularly between the remaining wires of the support and the layer of permeable material.
Le procédé selon l'invention ne présentant pas ces inconvénient est caractérisé en ce que lors de la fabrication du support on a prév sur une face des fils spéciaux ayant une âme et une partie externe e thermoplastique dont la température de fusion est inférieure à cell de l'âme et à celles des autres fils et en ce qu'on chauffe ladite fac jusqu'à mettre en fusion la partie externe desdits fils spéciaux pui on applique la couche de matière perméable sur cette face.The process according to the invention which does not have these drawbacks is characterized in that, during the manufacture of the support, special yarns having a core and an outer thermoplastic part whose melting point is lower than that of the core and those of the other wires and in that the said fac is heated until the external part of the said special wires is fused, then the layer of permeable material is applied to this face.
Lorsque les fils spéciaux sont chauffés seule la partie extern fond et assure un pontage entre l'âme de ces fils et la couche en matière perméable. Le support n'est donc pas partiellement détruit et la liaison est excellente entre support et couche perméable.When the special wires are heated, only the outer part melts and provides a bridge between the core of these wires and the layer of permeable material. The support is therefore not partially destroyed and the bond is excellent between support and permeable layer.
La présente invention est particulièrement intéressante pour la fabrication de feutres pour papeterie dans laquelle la couche perméable permet entre autre de supprimer le marquage de la feuille de papier sous l'effet de la pression et de transporter l'eau extrait de la feuille de papier que l'on fabrique.The present invention is particularly advantageous for the manufacture of felts for stationery in which the permeable layer makes it possible inter alia to remove the marking of the sheet of paper under the effect of pressure and to transport the water extracted from the sheet of paper that we manufacture.
Les feutres de papeterie sont habituellement fabriqués par fixa¬ tion par aiguilletage de la couche en matière perméable constituée de fibres liées entre elles sur un support en fils tissés (même si un collage additionnel entre support et couche perméable est effectué comme décrit dans le document DT-A 1807329.Stationery felts are usually manufactured by fixa ¬ tion by needling of the layer of permeable material consisting of fibers bonded together on a support of woven threads (even if a additional bonding between support and permeable layer is carried out as described in document DT-A 1807329.
Le feutre ainsi formé présente plusieurs défauts. Tout d'abord sa perméabilité a diminuée étant donné que des fibres ont été introduites dans le support.The felt thus formed has several defects. First of all, its permeability has decreased since fibers have been introduced into the support.
Ensuite la couche de matière perméable se trouve compactée et munie de nombreux petits entonnoirs aux endroits où les aiguilles ont pénétré.Then the layer of permeable material is compacted and provided with numerous small funnels at the places where the needles have penetrated.
Enfin les aiguilles ont blessé le support ce qui diminue la durée de vie du feutre et favorise sa déformation.Finally, the needles have injured the support, which shortens the life of the felt and promotes its deformation.
D'autre part lorsque le support est muni de moyens de jonction- nement (boucles, spirales etc.... destinées a être reliées par un jonc pour que le feutre forme une bande sans fin) avant 1'aiguilletage celui-ci endommage les moyens de jonctionnement. De plus la présence dans les moyens de jonctionnement de fibres à la suite de l'aiguil- letage rend plus difficile le passage du jonc lors du jonctionnement.On the other hand when the support is provided with joining means (loops, spirals, etc. intended to be connected by a rod so that the felt forms an endless band) before needling, this damages the joining means. In addition, the presence in the joining means of fibers following the referral makes it more difficult for the rod to pass during joining.
Grâce au procédé selon l'invention on peut choisir le support désiré en utilisant par exemple des fils résistants à la dégradation chimique et même si leur ténacité est assez basse, elle ne risque plus d'être diminuée par l'aiguilletage en dessous d'une valeur prohibitive.Thanks to the process according to the invention, the desired support can be chosen by using, for example, threads resistant to chemical degradation and even if their toughness is low enough, there is no longer any risk of it being reduced by needling below a prohibitive value.
Pour d'autres applications on peut choisir des supports très résistants qui évitent la déformation lors de la rotation du feutre ou l'abrasion lors du contact avec les rouleaux sans craindre sa destruc- tion partielle lors de l'aiguilletage.For other applications one can choose very resistant supports which avoid deformation during rotation of the felt or abrasion during contact with the rollers without fear of its partial destruction during needling.
Pour un feutre de papeterie les fils de trame constitueront de préférence les fils de trame de la face chauffée lesdits fils étant alors perpendiculaires à la direction de déroulement du feutre.For a stationery felt the weft threads will preferably constitute the weft threads of the heated face, said threads then being perpendicular to the direction of unwinding of the felt.
Ainsi le contact entre support et couche perméable est bon et permet de maintenir à un bas niveau les contraintes entre couche perméable et support qui sont dues aux flexions lors du mouvement du feutre.Thus the contact between support and permeable layer is good and makes it possible to maintain at a low level the stresses between permeable layer and support which are due to bending during the movement of the felt.
On peut en variante mettre les fils spéciaux selon la chaîne donc dans le sens de déroulement des feutres. Le contact par points entre fils de chaîne et couche perméable permet de maintenir à un bas niveau les contraintes entre couche perméable et support qui sont dues au flexions lors du mouvement du feutre.We can alternatively put the special son along the chain so in the direction of unwinding of the felts. Point contact between warp and permeable layer keeps it low the stresses between the permeable layer and the support which are due to bending during the movement of the felt.
Le procédé selon l'invention est également très intéressant pou la fabrication de tissus filtrants dans lesquels la couche perméable sert à filtrer un liquide ou un gaz et à retenir les impuretés spécia¬ lement lorsque le support qui donne les caractéristiques mécaniques est muni de moyens de jonctionnement.The method according to the invention is also very advantageous for the manufacture of filter fabrics in which the permeable layer is used to filter a liquid or a gas and to retain impurities specifically when the support which gives the mechanical characteristics is provided with means of joining.
Il faut souligner que l'emploi de l'invention permet de ne pas utiliser de machines d'aiguilletage qui sont relativement coûteuses. La présente invention va être maintenant décrite plus en détail en se référant à un mode de réalisation particulier et représenté par les figures annexées.It should be emphasized that the use of the invention makes it possible not to use needling machines which are relatively expensive. The present invention will now be described in more detail with reference to a particular embodiment and represented by the appended figures.
Les figures 1 et 2 représentent un support et une couche utilisés dans le procédé selon l'invention. La figure 3 représente schématiquement un dispositif pour la mise en oeuvre du procédé selon l'invention.Figures 1 and 2 show a support and a layer used in the method according to the invention. FIG. 3 schematically represents a device for implementing the method according to the invention.
Le support tissé 20 comporte des fils de chaîne l', 2', 3', 4», 5', 6', 7', 8' de période huit, et des fils de trame 1, 2, 3, 4, 5, 6,The woven support 20 has warp threads 1 ', 2', 3 ', 4 ", 5', 6 ', 7', 8 'of period eight, and weft threads 1, 2, 3, 4, 5 , 6,
7, 8, 9, 10, 11, .12 (voir figure 1). Sur la face supérieure 21 qui est l'endroit du support 20, les fils de trame 1, 3, 4, 6, 7, 9, 10, 12 (c'est-à-dire deux fils sur trois) sont en relief comme on le voit sur la coupe II-II (figure 2).7, 8, 9, 10, 11, .12 (see Figure 1). On the upper face 21 which is the place of the support 20, the weft threads 1, 3, 4, 6, 7, 9, 10, 12 (that is to say two threads out of three) are in relief as we can see it on section II-II (figure 2).
Par contre sur la face inférieure 22 qui est l'envers du support 20 les autres fils de trame 2, 5, 8, 11 (c'est-à-dire un fil sur trois) sont disposés sous les fils de chaîne.By cons on the underside 22 which is the reverse of the support 20 the other weft son 2, 5, 8, 11 (that is to say one thread in three) are arranged under the warp son.
Les fils de trame 1, 3, 4, 6, 7, 9, 10, 12 en relief sont- des fils spéciaux monofilaments bicomposants. Ils comportent une âme 24 en polyester entourée d'une gaine 25 en polyamide 6. Les autres fils de chaîne T, 2', 3', 4», 5', 6', 7', 8' et de trame 2, 5, 8, 11 sont en polyester.The weft threads 1, 3, 4, 6, 7, 9, 10, 12 in relief are special bicomponent monofilament threads. They have a polyester core 24 surrounded by a polyamide 6 sheath 25. The other warp threads T, 2 ', 3', 4 ", 5 ', 6', 7 ', 8' and weft 2, 5 , 8, 11 are made of polyester.
Pour obtenir ces fils bicomposants on peut procéder soit par extrusion, soit par tissage, soit encore par guipage.To obtain these two-component threads, it is possible either by extrusion, or by weaving, or even by covering.
La température de fusion du polyester est de 230°C et celle du polyamide 6 est de 180°C. Le support peut être fabriqué par tissage, tricotage, assemblageThe melting point of polyester is 230 ° C and that of polyamide 6 is 180 ° C. The support can be made by weaving, knitting, assembling
OMPIWIPO
{ WIPO de spirales etc....{WIPO spirals etc ...
Les fils spéciaux bicomposants comportent une âme composée d'un monofilament ou de plusieurs filaments ou même de filets de fibres coupés et une partie externe entourant l'âme ce qui peut être une gaine ou des filets entourant l'âme ayant un point de fusion inférieur à celui de l'âme et des autres fils constituant le support.The special two-component yarns comprise a core composed of a monofilament or of several filaments or even of threads of cut fibers and an external part surrounding the core which may be a sheath or threads surrounding the core having a lower melting point to that of the core and of the other wires constituting the support.
Il s'ensuit qu'après fusion de la partie externe, les fils spé¬ ciaux conservent certaines de leurs caractéristiques mécaniques.It follows that after fusion of the external part, the special wires retain some of their mechanical characteristics.
Puisqu'il n'y a pas de limitations dues à l'aiguilletage, la couche de matière perméable est choisie en fonction des caractéris¬ tiques désirées du produit final.Since there are no limitations due to needling, the layer of permeable material is chosen according to the desired characteristics of the final product.
Cette couche 26 peut être constituée de fibres continues ou discontinues liées entre elles par aiguilletage, par fusion, par imprégnation avec de la résine etc....... Elle pourrait être également constituée d'un film extrudé qui est ou a été rendu perméable au fluide.This layer 26 can consist of continuous or discontinuous fibers linked together by needling, by fusion, by impregnation with resin, etc. It could also consist of an extruded film which is or has been rendered permeable to fluid.
Le support 20 peut se terminer à chaque extrémité par des moyens de jonctionnement 23 (boucles, spirales, etc ).The support 20 can end at each end by joining means 23 (loops, spirals, etc.).
Le dispositif permettant de mettre en oeuvre l'invention (fi- gure 3) comporte des éléments de chauffe, par exemple infrarouges 30, deux rouleaux 31» 32 dont le premier a son axe fixe et dont le second est appliqué contre le premier, un cylindre chauffé 33 et des rouleaux de rappel 34, 35 ainsi qu'un tendeur 36.The device making it possible to implement the invention (FIG. 3) comprises heating elements, for example infrared 30, two rollers 31 "32, the first of which has its fixed axis and the second of which is applied against the first, a heated cylinder 33 and return rollers 34, 35 and a tensioner 36.
La couche perméable 26 est enroulé sur un cylindre 37. Le support est monté sur les rouleaux 34, 35, et sur le ten¬ deur 36 il passe entre les rouleaux 31, 32 et autour du cylindre 31. Le cylindre 31 est entraîné.The permeable layer 26 is wound on a cylinder 37. The support is mounted on the rollers 34, 35, and on the tenor 36 it passes between the rollers 31, 32 and around the cylinder 31. The cylinder 31 is driven.
La face 21 avec les fils spéciaux du support (orthogonaux au sens de défilement) passe sous les éléments de chauffe 30 qui la chauffe à une température faisant fondre la partie externe des fils spéciaux (par exemple 200°C). La couche perméable 26 est appliqué par le rouleau 32 sur la face 21 avec les fils en fusion. A la sortie des rouleaux 31, 32 la couche 26 adhère sur le support 21 et l'ensemble couche 26 et support 20 est enroulé autour du cylindre 33 (couche 26 contre le cylindre 33) qui est chauffé à basse température (120°C)The face 21 with the special wires of the support (orthogonal to the direction of travel) passes under the heating elements 30 which heats it to a temperature which melts the external part of the special wires (for example 200 ° C.). The permeable layer 26 is applied by the roller 32 to the face 21 with the molten wires. At the exit of the rollers 31, 32 the layer 26 adheres to the support 21 and the assembly of layer 26 and support 20 is wound around the cylinder 33 (layer 26 against the cylinder 33) which is heated to low temperature (120 ° C.)
OM afin d'améliorer l'état de surface.OM to improve the surface finish.
Il faudra bien entendu prendre des précautions au départ et à la fin de l'opération pour que les extrémités de la couche perméable ne se chevauchent pas. II est évident qu'en munissant les deux faces 21, 22 du support 20 de fils spéciaux on pourra y coller une couche 26 des deux côtés.It will of course be necessary to take precautions at the start and at the end of the operation so that the ends of the permeable layer do not overlap. It is obvious that by providing the two faces 21, 22 of the support 20 with special wires, it will be possible to stick a layer 26 thereon on both sides.
Pour les feutres de papeterie il est préférable de disposer les fils spéciaux selon la trame (orthogonalement au sens de défilement du feutre) comme représenté sur les figures.For stationery felts it is preferable to arrange the special threads according to the weft (orthogonally to the direction of travel of the felt) as shown in the figures.
On peut également disposer les fils spéciaux selon la chaîne 1 ' , 2', 3', 4', 5', 6', 7', 8' donc orientés dans le sens de défilement du feutre.We can also arrange the special threads along the chain 1 ', 2', 3 ', 4', 5 ', 6', 7 ', 8' therefore oriented in the direction of travel of the felt.
Avec ces deux dispositions les contraintes de flexion entre couche perméable 26 et support 21 lors du mouvement du feutre sont réduites. With these two arrangements, the bending stresses between the permeable layer 26 and the support 21 during the movement of the felt are reduced.

Claims

REVENDICATIONS
1/ Procédé de collage d'une couche de matière perméable (26) sur un support (20) constitué de fils (1«, 2', 3', 4', 5», 6', 7', 8', 1, 2, 3, 4', 5, 6, 7, 8, 9, 10, 11, 12) liés entre eux, caractérisé en ce que lors de la fabrication du support (20) on a prévu sur une face (21) des fils spéciaux (1, 3, 4, 6, 7, 9, 10, 12) ayant une âme (24) et une partie externe (25) en thermoplastique dont la température de fusion est inférieure à celle de l'âme (25) et à celles des autres fils (V, 2', 3', 4', 5', 6', 7', 8», 2, 5, 8, 11) et en ce qu'on chauffe ladite face (21) jusqu'à mettre en fusion la partie externe (25) desdits fils spéciaux (1, 3, 4, 6, 7, 9, 10, 12) puis on applique la couche (26) sur cette face (21).1 / Method for bonding a layer of permeable material (26) on a support (20) consisting of wires (1 ", 2 ', 3', 4 ', 5", 6', 7 ', 8', 1 , 2, 3, 4 ', 5, 6, 7, 8, 9, 10, 11, 12) linked together, characterized in that during the production of the support (20) there is provided on one face (21) special wires (1, 3, 4, 6, 7, 9, 10, 12) having a core (24) and an outer part (25) made of thermoplastic, the melting temperature of which is lower than that of the core (25 ) and those of the other wires (V, 2 ', 3', 4 ', 5', 6 ', 7', 8 ", 2, 5, 8, 11) and in that the said face is heated (21 ) until the external part (25) of said special wires (1, 3, 4, 6, 7, 9, 10, 12) is melted, then the layer (26) is applied to this face (21).
2/ Procédé selon la revendication 1, caractérisé en ce que les fils spéciaux (1, 3, 4, 6, 7, 9, 10, 12) ont une âme (24) en polyester et une partie externe (25) constituée d'une gaine en polyamide 6 en ce que les autres fils (1', 2», 3', 4', 5', 6', 7', 8', 2, 5, 8, 11) sont2 / A method according to claim 1, characterized in that the special son (1, 3, 4, 6, 7, 9, 10, 12) have a core (24) of polyester and an external part (25) consisting of a polyamide 6 sheath in that the other wires (1 ', 2 ", 3', 4 ', 5', 6 ', 7', 8 ', 2, 5, 8, 11) are
""" en polyester et en ce que la face (21) comprenant les fils spéciaux (1, " "" made of polyester and in that the face (21) comprising the special yarns (1,
3, 4, 6, 7, 9, 10, 12) est chauffée à une température voisine de 200°C avant application de la couche (26). 3/ Procédé selon l'une des revendications précédentes, caractérisé en ce que le support (20) est muni de moyens de jonctionnement (23) avant l'opération de fixation de la couche (26).3, 4, 6, 7, 9, 10, 12) is heated to a temperature in the region of 200 ° C before application of the layer (26). 3 / Method according to one of the preceding claims, characterized in that the support (20) is provided with joining means (23) before the operation of fixing the layer (26).
4/ Feutre pour machine à papier fabriqué suivant le procédé selon l'une des revendications 1 à 3» 5/ Feutre selon la revendication 4, caractérisé en ce que les fils spéciaux sont disposés selon la trame de la face (21) orthogonalement au sens de défilement du feutre.4 / felt for paper machine manufactured according to the method according to one of claims 1 to 3 »5 / felt according to claim 4, characterized in that the special threads are arranged along the weft of the face (21) orthogonally to the direction scrolling felt.
6/ Feutre selon la revendication 4, caractérisé en ce que les fils spéciaux sont disposés selon la chaîne du support (20) dans le sens de défilement du feutre.6 / felt according to claim 4, characterized in that the special son are arranged along the chain of the support (20) in the direction of travel of the felt.
7/ Tissu filtrant fabriqué suivant le procédé selon l'une des revendi¬ cations 1 à 3. 7 / Filter fabric manufactured according to the method according to one of claims 1 to 3.
PCT/FR1984/000187 1983-08-11 1984-08-10 Process for heat-sealing a layer of pervious material on a support formed of interwoven threads and felts for paper machine and filter fabrics produced thereby WO1985000840A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI851290A FI86657C (en) 1983-08-11 1985-03-29 VID PAPPERSFRAMSTAELLNING ANVAENDBAR FILT SAMT FOERFARANDE FOER DESS FRAMSTAELLNING.
NO851312A NO160727C (en) 1983-08-11 1985-04-01 FILTER FOR PAPER MACHINE, AND PROCEDURE FOR MANUFACTURING SUCH FILTER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8313213 1983-08-11
FR83/13213 1983-08-11

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WO1985000840A1 true WO1985000840A1 (en) 1985-02-28

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PCT/FR1984/000187 WO1985000840A1 (en) 1983-08-11 1984-08-10 Process for heat-sealing a layer of pervious material on a support formed of interwoven threads and felts for paper machine and filter fabrics produced thereby

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EP (1) EP0133836B1 (en)
JP (1) JPS60502012A (en)
AT (1) ATE30345T1 (en)
AU (1) AU569912B2 (en)
CA (1) CA1251124A (en)
DE (1) DE3466902D1 (en)
FI (1) FI86657C (en)
WO (1) WO1985000840A1 (en)

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Publication number Priority date Publication date Assignee Title
EP0239207A3 (en) * 1986-03-26 1989-11-08 ASTEN GROUP INC. (a Delaware corporation) Method of manufacturing papermaker's felt
US5549967A (en) * 1995-05-04 1996-08-27 Huyck Licensco, Inc. Papermakers' press fabric with increased contact area
US6030908A (en) * 1998-03-16 2000-02-29 Jwi Ltd. Multilayer porous fabric
DE19859583A1 (en) * 1998-12-22 2000-06-29 Voith Fabrics Heidenheim Gmbh Paper machine wire for the wet end of a paper machine
CA2313867A1 (en) 1999-07-19 2001-01-19 Paul C. Fleri Polymer blends of trimethylene terephthalate and an elastomeric polyester

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GB276392A (en) * 1926-04-07 1927-09-01 Respro Inc Leather substitute and process of making the same
FR1318984A (en) * 1962-03-31 1963-02-22 Us Rubber Co Sewing braid improvements for rugs
GB994914A (en) * 1962-10-11 1965-06-10 Dynamit Nobel Ag Composite plastics article
DE1807329A1 (en) * 1967-11-06 1969-06-19 Huyck Corp Forming medium for the forming section of a paper machine
DE1635487A1 (en) * 1967-10-25 1971-10-28 Degussa Composite webs
FR2097823A5 (en) * 1970-06-03 1972-03-03 Cpc International Inc
EP0010246A1 (en) * 1978-10-12 1980-04-30 BASF Aktiengesellschaft Laminates from filled polyolefins and a thermoplastic decorative layer; method of making same and application
GB2067133A (en) * 1980-01-12 1981-07-22 British Vita Co Ltd Improvements in or relating to non-woven fabrics

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GB994917A (en) * 1962-10-26 1965-06-10 John Halliday And Sons Ltd Improvements in or relating to apparatus for detecting variations in the thickness of a moving filament, thread or the like
JPS5930819B2 (en) * 1976-04-08 1984-07-28 株式会社クラレ self-adhesive interlining

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB276392A (en) * 1926-04-07 1927-09-01 Respro Inc Leather substitute and process of making the same
FR1318984A (en) * 1962-03-31 1963-02-22 Us Rubber Co Sewing braid improvements for rugs
GB994914A (en) * 1962-10-11 1965-06-10 Dynamit Nobel Ag Composite plastics article
DE1635487A1 (en) * 1967-10-25 1971-10-28 Degussa Composite webs
DE1807329A1 (en) * 1967-11-06 1969-06-19 Huyck Corp Forming medium for the forming section of a paper machine
FR2097823A5 (en) * 1970-06-03 1972-03-03 Cpc International Inc
EP0010246A1 (en) * 1978-10-12 1980-04-30 BASF Aktiengesellschaft Laminates from filled polyolefins and a thermoplastic decorative layer; method of making same and application
GB2067133A (en) * 1980-01-12 1981-07-22 British Vita Co Ltd Improvements in or relating to non-woven fabrics

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EP0133836A1 (en) 1985-03-06
ATE30345T1 (en) 1987-11-15
FI86657C (en) 1992-09-25
AU569912B2 (en) 1988-02-25
FI851290L (en) 1985-03-29
DE3466902D1 (en) 1987-11-26
FI86657B (en) 1992-06-15
FI851290A0 (en) 1985-03-29
AU3312384A (en) 1985-03-12
JPS60502012A (en) 1985-11-21
EP0133836B1 (en) 1987-10-21
JPS6344877B2 (en) 1988-09-07
CA1251124A (en) 1989-03-14

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