EP0842313B1 - Method and device for making textile products - Google Patents

Method and device for making textile products Download PDF

Info

Publication number
EP0842313B1
EP0842313B1 EP96927060A EP96927060A EP0842313B1 EP 0842313 B1 EP0842313 B1 EP 0842313B1 EP 96927060 A EP96927060 A EP 96927060A EP 96927060 A EP96927060 A EP 96927060A EP 0842313 B1 EP0842313 B1 EP 0842313B1
Authority
EP
European Patent Office
Prior art keywords
looping
crimping
gauge
discs
filaments
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
Application number
EP96927060A
Other languages
German (de)
French (fr)
Other versions
EP0842313A1 (en
Inventor
Henri Genevray
Xavier Bathelier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tarkett Sommer SA
N Schlumberger SAS
Original Assignee
Tarkett Sommer SA
N Schlumberger SAS
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 Tarkett Sommer SA, N Schlumberger SAS filed Critical Tarkett Sommer SA
Priority to EP96927060A priority Critical patent/EP0842313B1/en
Priority to SI9630189T priority patent/SI0842313T1/en
Publication of EP0842313A1 publication Critical patent/EP0842313A1/en
Application granted granted Critical
Publication of EP0842313B1 publication Critical patent/EP0842313B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • D04H11/00—Non-woven pile fabrics
    • D04H11/08—Non-woven pile fabrics formed by creation of a pile on at least one surface of a non-woven fabric without addition of pile-forming material, e.g. by needling, by differential shrinking

Definitions

  • the present invention relates to a method advanced manufacturing of textile products directly from fibers and / or filaments.
  • the invention also relates to a device for the implementation of the process.
  • the present invention relates essentially the production of products obtained by the technique called "verticalization technique” and developed by one of the Applicants.
  • the technique described consists in subjecting the fibers and / or filaments "transverse looping" accompanied by a “stretching” and to obtain an accumulation of fibers and / or filaments in the form of a "pseudo-thread" in which the fibers and / or filaments are parallelized.
  • each fiber or filament is in principle involved in at least one looping so as to form a twist-free yarn obtained by the accumulation of various fibers and / or filaments elementary well parallelized.
  • the condition on the orientation that must present the fibers and / or filaments with respect to the advance direction is a minimum condition for profitability for the bottom corner. Indeed, below from a certain angle, the fibers and / or filaments may no longer be correctly parallelized during the realization pseudo-wire, which affects product performance. Through against, as far as the maximum angle is concerned, this is an angle that constitutes a compromise between theory and practical, i.e.
  • the degree of stretching is adjusted so that the fibers in the stretched product are mainly distributed according to two orientations substantially symmetrical with respect to the longitudinal direction of the drawn product.
  • the longitudinal stretch of the web leaving the spreader - lapper is preferably limited to 3. Indeed, beyond such a limit, one often obtains a non-homogeneous product in the form of a product "moth".
  • the average angle of orientation of the fibers and / or filaments is between 40 and 75 degrees from direction longitudinal of the stretched product, which will be the direction in advance of the veil.
  • the re-engagement of the veil can be long and delicate, and even dangerous in the case there is manual intervention.
  • devices placed upstream of the looping disc device / looping fingers such as the carder and lapper, have a great inertia, which will inevitably make fall productivity below acceptable limits.
  • the present invention aims to propose a solution to the problem encountered in the state of the art, that is to say a solution that would reduce so particularly important the efforts produced by using preferably the spreader-lapper device followed by a stretcher as described in document EP-A-0 520 911 for properly orient the fibers and / or filaments intended for use in a method and a device for verticalization as defined in the document EP-A-0 479 880.
  • the present invention also aims to resolve the problem of poor engagement of the web between the discs and curling fingers.
  • the present invention relates to a method of manufacture of a textile product from fibers and / or filaments flowing in the direction of advance in the form a veil, conventionally comprising a step called pre-looping step, in which the fibers and / or filaments are individually looped transverse to the direction of advance, possibly accompanied by a transverse stretch, and accumulate under form of a wavy pseudo-yarn in which the fibers and / or filaments are parallelized.
  • the process is characterized by what we do a step prior to the pre-looping step which is called "ripple step".
  • the waving step is carried out using a device consisting of the interpenetration of a second set of discs called discs inverters with a second set of fingers called fingers inverters, this device being arranged upstream of the device pre-looping with respect to the direction of advance of the web.
  • the ripple device presents a gauge which is a multiple of the gauge of the pre-looping device (i.e. n x j in the case where j is the gauge of the pre-loop device).
  • dimensions and arrangement of the different elements of the ripple device should be calculated so that the length of a ripple obtained within the ripple device is worth approximately the number of after the pre-loop device gauge has been multiplied within the ripple device.
  • a gauge for the ripple device which is double the gauge of the pre-loop device.
  • the length of one ripple obtained within the ripple device is worth twice the length of a ripple created within the pre-loop device.
  • efforts will be divided, according to the subjects used, by a factor of 5 to 10 compared to the scenario where no corrugation device is used.
  • the pre-loop device is only intended for the formation of corrugated wire by accumulation of fibers and / or filaments.
  • the diameters of the inverter discs and of the shaft supporting these inverter discs of the corrugation device (s) which is (are) arranged upstream of the pre-loop device are not limited to considerations of accumulation of fibers and / or filaments in the form of a thread and can be therefore particularly important.
  • Figure 1 shows a schematic view of a device that we could call orientation device of fibers and / or filaments and which has been the subject of a detailed description in document EP-A-0 520 911.
  • the fibers and / or filaments undergo in 1 and 2 a step of mixing and working the materials, so as to constitute a first veil 00 after passing through a card 3, which has a weight of about 20 g / m 2 for a width of 2.5 m.
  • the feed speed is approximately 100 m / minute.
  • the veil is treated according to the technique described in European patent EP-A-0 520 911, that is to say that it is introduced into a spreader-lapper 5 so to successively fold the veil of fibers several times and / or filaments from the card 3.
  • the folded veil which is also called “tablecloth” 0 is introduced into a stretcher 7 as described in the document EP-A-0 520 911.
  • This device is provided with means rotary with a lining at their periphery comprising spikes which are penetrated into the heart of the tablecloth 0.
  • the length of the spreader - lapper device is greater than this value, and preferably about 5 m.
  • the degree of stretching of the device is also adjusted stretcher so that the fibers and / or filaments in the stretched veil 10 are mainly divided into two directions substantially symmetrical with respect to the longitudinal direction of the stretched product and that is going to be the web direction 10.
  • the stretch rate is preferably limited to 3 in order to avoid bad cohesion of the veil (moth product).
  • Figures 2a and 2b show the device verticalization according to two embodiments of the present invention.
  • this device consists of classic way of a first set of looping discs 91 arranged on a transverse shaft 93 and between which come to place looper fingers 95.
  • a second device called ripple device is arranged upstream of the pre-loop device.
  • This ripple device is consisting of a set of inverter discs 101 arranged on a tree 103 and between which come to place fingers inverters 105.
  • the undulating fingers 101 and looper 91 are arranged opposite to the inverter disks and respective looper. This allows engagement in the form of "S" of the web between the inverter and looper discs.
  • the undulating fingers 101 and looper 91 are arranged on the same side compared to the inverter and looper discs, thus favoring the engagement of a veil in the form of a "V", for example.
  • the gauge according to which are the device's inverter disks ripple is a multiple of the gauge of the pre-loop.
  • Figures 2a and 2b show two shapes particularly simple execution, where for a gauge j of pre-loop device, we have a 2j gauge of the device ripple.
  • Figures 3 show several front views different elements constituting the two pre-looping and waving in which we have shown schematically the discs and the looping fingers and inverters.
  • FIG. 3a represents the behavior of fibers and / or filaments within the device called ripple device and which is located most upstream with respect to the direction of advance of the web 10.
  • ripple device the behavior of fibers and / or filaments within the device called ripple device and which is located most upstream with respect to the direction of advance of the web 10.
  • the gauge of the corrugator is simply the double that of the pre-loop device where the actual wire formation.
  • Figure 3b shows the step of transferring fibers and / or filaments between the corrugator and the pre-looping device.
  • the discs loops 91 of the pre-loop device are arranged exactly in line with the fingers 105 of the device ripple but also in the extension of the discs 101 of the corrugation device. Therefore, we observe that there are twice as many discs in the device pre-looping only in the corrugation device.
  • pre-loop device the behavior of the fibers and / or filaments within the device called pre-loop device, which is located furthest downstream and which allows the realization of the corrugated pseudo-wire obtained by the accumulation of fibers and / or filaments.
  • the pre-loop device has a tonnage half the size of that of corrugation device, it is important to check that the length of the ripple obtained for the fibers and / or filaments in the corrugator is equal or close double the length of the wavy fibers and / or filaments created by the pre-loop device for constitute the pseudo-thread.
  • Figures 4, 5 and 6 show the efforts of closure, either according to the gauge, or according to the weight of the veil, i.e. depending on the orientation angle of the fibers, the other parameters being fixed in each of the case.
  • FIG. 4 represents the corrugation forces as a function of the gauge in the case of a constant veil weight chosen at 20 g / m 2 , and in which the fibers have an average angle of orientation of 45 ° in relation to the direction of advance.
  • PA polyamide veil
  • PP polypropylene veil
  • FIG. 5 represents the corrugation forces as a function of the weight of the veil P (g / m 2 ) for a fixed gauge chosen at 1/8 inch and in which the fibers have an average angle of orientation of 45 ° relative to the direction of advance, again in the case of a polypropylene (PP) veil and a polyamide (PA) veil.
  • PP polypropylene
  • PA polyamide
  • FIG. 6 represents the corrugation forces as a function of the angle of orientation of the fibers for a veil having a weight of 20 g / m 2 and where the gauge is 1/8 inch, this for two materials, one polyamide veil (PA) and a polypropylene veil (PP).
  • PA polyamide veil
  • PP polypropylene veil
  • Another particularly important aspect of present invention lies in solving the problem of bad engagement of the veil in the device of verticalization.
  • the ripple device is no longer subject to the same conditions with regard to teeth that the pre-looping device which must allow the accumulation of fibers and / or filaments in the form of a wire.
  • FIG. 7 shows the teeth of the ripple and pre-loop devices. We observe that the toothing of the corrugation device is opposite to that of the pre-closure device, and will encourage the engagement of sail.
  • inverter discs that can be used in the corrugation device and which have teeth which allows easy engagement and training of the veil in the verticalization device.
  • inverter discs such as shown in Figure 8 there is excellent behavior of matter, which further reduces corrugation forces within the corrugation device.
  • Figure 9 there is shown the device as described in document EP-A-0 520 911, which consists of a series of successive cylinders, and in which the last cylinder belonging to this device 7 is in line with the first of the discs inverters of the corrugation device 9, so that we can train directly at the output of the device drawing, the web consisting of fibers and / or filaments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

A method for making a textile product from a web of fibres and/or filaments moving in a feed direction. The method comprises a pre-looping step in which the fibres and/or filaments are individually transversely looped relative to the feed direction and optionally transversely stretched, whereafter they pile up in the form of a crimped pseudo-yarn in which the fibres and/or filaments are parallelised. Prior to the pre-looping step, the method comprises a crimping step in which the fibres and/or filaments are crimped with a period and an evolute that are a multiple of the period and evolute of the "crimp" formed in the pre-looping step.

Description

Objet de l'invention.Subject of the invention.

La présente invention est relative à un procédé perfectionné de fabrication de produits textiles directement à partir de fibres et/ou de filaments.The present invention relates to a method advanced manufacturing of textile products directly from fibers and / or filaments.

L'invention concerne également un dispositif pour la mise en oeuvre du procédé.The invention also relates to a device for the implementation of the process.

Résumé de l'état de la technique.Summary of the state of the art.

La présente invention se rapporte essentiellement à la réalisation de produits obtenus par la technique appelée "technique de verticalisation" et mise au point par l'une des Demanderesses.The present invention relates essentially the production of products obtained by the technique called "verticalization technique" and developed by one of the Applicants.

Cette technique est décrite dans le brevet européen EP-A-0 479 880, et permet directement à partir de fibres et/ou de filaments circulant sous forme d'un voile, la réalisation spécifiquement de revêtements de sols et/ou de murs de type moquette .This technique is described in the European patent EP-A-0 479 880, and allows directly from fibers and / or filaments flowing in the form of a veil, the specific production of floor coverings and / or carpet-like walls.

La technique décrite consiste à faire subir aux fibres et/ou aux filaments un "bouclage transversal" accompagné d'un "étirage" et à obtenir une accumulation des fibres et/ou filaments sous forme d'un "pseudo-fil" dans lequel les fibres et/ou filaments sont parallélisés.The technique described consists in subjecting the fibers and / or filaments "transverse looping" accompanied by a "stretching" and to obtain an accumulation of fibers and / or filaments in the form of a "pseudo-thread" in which the fibers and / or filaments are parallelized.

Dans ce document, on décrit que le bouclage transversal accompagné d'étirage est réalisé pour chaque fibre ou filament individuel à l'aide d'éléments boucleurs rotatifs ou disques, espacés et disposés sur un axe transversal par rapport à l'avance du voile et entre lesquels sont disposés des doigts boucleurs. De cette manière, chaque fibre ou filament est en principe impliqué dans au moins un bouclage de manière à constituer un fil sans torsion obtenu par l'accumulation des diverses fibres et/ou filaments élémentaires bien parallélisés.In this document, it is described that the closure transverse accompanied by stretching is carried out for each individual fiber or filament using looping elements rotary or discs, spaced apart and arranged on an axis transverse to the web advance and between which are arranged looping fingers. In this way, each fiber or filament is in principle involved in at least one looping so as to form a twist-free yarn obtained by the accumulation of various fibers and / or filaments elementary well parallelized.

Les conditions qui avaient été établies lors du dépôt de la demande de brevet susmentionnée semblaient être doubles :

  • d'une part, la majorité des éléments constitutifs du voile, c'est-à-dire les fibres et/ou filaments individuels, devaient présenter un angle d'orientation par rapport à la direction d'avance du voile qui était compris entre 5 et 45 degrés, et plus précisément entre 15 et 25 degrés;
  • d'autre part, le voile de fibres et/ou filaments au départ devait présenter un poids faible par unité de surface, et de préférence compris entre 10 et 50 g / m2.
The conditions which had been established when the above-mentioned patent application was filed seemed to be twofold:
  • on the one hand, the majority of the constituent elements of the veil, that is to say the individual fibers and / or filaments, should have an angle of orientation relative to the direction of advance of the veil which was between 5 and 45 degrees, and more precisely between 15 and 25 degrees;
  • on the other hand, the veil of fibers and / or filaments at the start should have a low weight per unit area, and preferably between 10 and 50 g / m 2 .

La condition sur l'orientation que doivent présenter les fibres et/ou filaments par rapport à la direction d'avance est une condition minimale de rentabilité pour ce qui concerne l'angle inférieur. En effet, en deça d'un certain angle, les fibres et/ou filaments risquent de ne plus être correctement parallélisés lors de la réalisation du pseudo-fil, ce qui nuit au rendement du produit. Par contre, pour ce qui concerne l'angle maximal, celui-ci est un angle qui constitue un compromis entre la théorie et la pratique, c'est-à-dire que dans le cas où des fibres et/ou filaments présentent un angle supérieur à cette limite de 45 degrés, on estime qu'en théorie, le procédé pourrait encore être réalisé, mais on observe que les fibres et/ou filaments généreraient des efforts qui augmentent de manière exponentielle avec l'angle d'orientation des fibres pour le dispositif constitué par l'interpénétration des disques boucleurs avec les doigts boucleurs, ce qui nécessiterait un surdimensionnement des pièces, et en particulier de l'arbre supportant les disques boucleurs.The condition on the orientation that must present the fibers and / or filaments with respect to the advance direction is a minimum condition for profitability for the bottom corner. Indeed, below from a certain angle, the fibers and / or filaments may no longer be correctly parallelized during the realization pseudo-wire, which affects product performance. Through against, as far as the maximum angle is concerned, this is an angle that constitutes a compromise between theory and practical, i.e. in the case where fibers and / or filaments have an angle greater than this limit of 45 degrees it is estimated that in theory the process could still be performed, but it is observed that the fibers and / or filaments would generate efforts that increase in a way exponential with the orientation angle of the fibers for the device constituted by the interpenetration of discs curlers with curler fingers, which would require a oversizing of the parts, and in particular of the shaft supporting looping discs.

Lors de la réalisation du prototype mettant en oeuvre le procédé décrit dans ce brevet, la Demanderesse avait donc proposé de satisfaire à la première des conditions en assurant une orientation des fibres par rapport à la direction d'avance par un "pré-étirage transversal" qui était essentiellement réalisé par l'interpénétration de deux jeux de disques disposés en amont du dispositif disques boucleurs / doigts boucleurs.During the realization of the prototype putting in implements the process described in this patent, the Applicant had therefore proposed to satisfy the first of the conditions ensuring an orientation of the fibers relative to the direction in advance by a "transverse pre-stretching" which was essentially achieved by the interpenetration of two games of discs arranged upstream of the disc device curlers / curler fingers.

Néanmoins, lors de l'élaboration d'une machine de 4 m de large par exemple, une telle solution technique s'est révélée difficile à mettre en oeuvre pour les raisons suivantes :

  • la difficulté à contrôler l'expansion latérale du voile à grande vitesse (formation de plis, ...) dans les conditions de productivité satisfaisantes,
  • la difficulté à orienter convenablement certains types de fibres et en particulier les fibres présentant une longueur supérieure à 250 mm ou les filament continus.
However, during the development of a 4 m wide machine for example, such a technical solution has proved difficult to implement for the following reasons:
  • the difficulty in controlling the lateral expansion of the veil at high speed (formation of folds, etc.) under satisfactory productivity conditions,
  • difficulty in properly orienting certain types of fibers and in particular fibers having a length greater than 250 mm or continuous filaments.

Une solution à ce problème spécifique a été proposée par la seconde Demanderesse. Elle propose d'utiliser un procédé qui est décrit dans le document EP-A-0 520 911, où l'on réalise à partir d'un voile d'entrée de fibres et/ou de filaments issu directement d'une carde par passage dans un étaleur-nappeur, une nappe comprenant plusieurs plis. Ensuite, on fait passer cette nappe dans un étireur muni de moyens rotatifs présentant à leur périphérie une garniture destinée à étirer la nappe.A solution to this specific problem has been proposed by the second Applicant. She suggests using a process which is described in document EP-A-0 520 911, where we realize from a fiber entry veil and / or of filaments coming directly from a card by passing through a spreader-lapper, a tablecloth comprising several plies. Then, we pass this tablecloth through a stretcher provided with rotary means having a lining at their periphery intended to stretch the tablecloth.

Etant donné que pour utiliser la technique dite de verticalisation, il est nécessaire de maintenir le poids du voile sous une certaine limite, on réalise en pratique un ou deux plis sur la largeur du voile qui doit rentrer dans le dispositif de verticalisation. Since to use the technique called verticalization, it is necessary to maintain the weight of the sailing under a certain limit, in practice one or two folds on the width of the veil which must enter the verticalization device.

On règle le degré d'étirage de manière que les fibres dans le produit étiré soit majoritairement réparties selon deux orientations sensiblement symétriques par rapport à la direction longitudinale du produit étiré.The degree of stretching is adjusted so that the fibers in the stretched product are mainly distributed according to two orientations substantially symmetrical with respect to the longitudinal direction of the drawn product.

En outre, l'étirage longitudinal de la nappe sortant de l'étaleur - nappeur est de préférence limité à 3. En effet, au-delà d'une telle limite, on obtient souvent un produit non homogène se présentant sous la forme d'un produit "mité".In addition, the longitudinal stretch of the web leaving the spreader - lapper is preferably limited to 3. Indeed, beyond such a limit, one often obtains a non-homogeneous product in the form of a product "moth".

Selon cette forme d'exécution décrite, on observe que l'angle moyen d'orientation des fibres et/ou filaments est compris entre 40 et 75 degrés par rapport à la direction longitudinale du produit étiré, qui sera la direction d'avance du voile.According to this described embodiment, we observe than the average angle of orientation of the fibers and / or filaments is between 40 and 75 degrees from direction longitudinal of the stretched product, which will be the direction in advance of the veil.

On observe que cet angle est particulièrement élevé, et se situe en partie en-dehors des plages mentionnées dans le brevet EP-A-0 479 880.We observe that this angle is particularly high, and is partly outside the mentioned ranges in patent EP-A-0 479 880.

Néanmoins, selon une telle configuration, il reste possible, en théorie tout au moins, d'effectuer un procédé tel que décrit dans ledit brevet européen.However, according to such a configuration, it remains possible, in theory at least, to perform a process as described in said European patent.

En résumé, on peut dire que le principal inconvénient de l'utilisation d'un dispositif d'orientation tel que décrit dans le document EP-A-0 520 911, qui est constitué d'un étaleur - nappeur suivi d'un étireur, réside dans la présence de l'angle trop important selon lequel les éléments constitutifs du voile se présentent à l'entrée du dispositif de verticalisation. Dans ce cas de figure, on estime que les efforts produits sur les disques de bouclage, et plus particulièrement sur l'arbre supportant ces disques, sont trop importants.In summary, we can say that the main disadvantage of using an orientation device as described in document EP-A-0 520 911, which is consisting of a spreader - lapper followed by a stretcher, resides in the presence of the too important angle according to which the constituent elements of the veil are present at the entrance of the verticalization device. In this case, we considers that the efforts produced on the looping discs, and more particularly on the shaft supporting these discs, are too important.

Une solution consisterait bien sûr à augmenter la taille de l'arbre portant les différents disques boucleurs, et par conséquent la taille de ces derniers. Or, la configuration qui permet l'accumulation "automatique" des fibres et/ou filaments sous forme d'un fil n'est rendue possible que pour des diamètres de disques inférieurs à un certain diamètre.One solution would of course be to increase the size of the tree carrying the different looping discs, and therefore the size of these. Now, the configuration which allows "automatic" accumulation of fibers and / or filaments in the form of a thread is made possible only for disc diameters less than one certain diameter.

Ceci limite donc également le diamètre de l'arbre portant les différents disques boucleurs.This therefore also limits the diameter of the tree carrying the various looping discs.

Un autre problème réside dans le fait que la configuration des dents présentes sur les disques boucleurs est, selon la forme d'exécution décrite dans le brevet EP-A-0 479 880, prévue de manière à permettre le détachage et le débourrage des fibres et/ou filaments au contact des aiguilles. Cette configuration ne favorise pas l'engagement du voile entre les disques et les doigts boucleurs.Another problem is that the configuration of the teeth on the looper discs is, according to the embodiment described in the patent EP-A-0 479 880, provided so as to allow detachment and the cleaning of fibers and / or filaments in contact with needles. This configuration does not encourage engagement veil between the discs and the looper fingers.

En particulier après un arrêt, le réengagement du voile peut être long et délicat, et même dangereux dans le cas où il y a une intervention manuelle. En outre, les dispositifs placés en amont du dispositif disques boucleurs / doigts boucleurs, tels que les carde et nappeur, possèdent une grande inertie, ce qui va immanquablement faire chuter le productivité en deça de limites acceptables.In particular after a stop, the re-engagement of the veil can be long and delicate, and even dangerous in the case there is manual intervention. In addition, devices placed upstream of the looping disc device / looping fingers, such as the carder and lapper, have a great inertia, which will inevitably make fall productivity below acceptable limits.

Buts de l'invention.Aims of the invention.

La présente invention vise à proposer une solution au problème rencontré dans l'état de la technique, c'est-à-dire une solution qui permettrait de réduire de manière particulièrement importante les efforts produits en utilisant de préférence le dispositif étaleur - nappeur suivi d'un étireur tel que décrit dans le document EP-A-0 520 911 pour orienter de manière adéquate les fibres et/ou filaments destinés à être utilisés dans un procédé et un dispositif de verticalisation tels que définis dans le document EP-A-0 479 880.The present invention aims to propose a solution to the problem encountered in the state of the art, that is to say a solution that would reduce so particularly important the efforts produced by using preferably the spreader-lapper device followed by a stretcher as described in document EP-A-0 520 911 for properly orient the fibers and / or filaments intended for use in a method and a device for verticalization as defined in the document EP-A-0 479 880.

La présente invention vise également à résoudre le problème du mauvais engagement du voile entre les disques et les doigts boucleurs.The present invention also aims to resolve the problem of poor engagement of the web between the discs and curling fingers.

D'autres avantages apparaítront dans la description qui suit. Other advantages will appear in the description following.

Principaux éléments caractéristiques de la présente invention.Main characteristic elements of this invention.

La présente invention se rapporte à un procédé de fabrication d'un produit textile au départ de fibres et/ou filaments circulant dans la direction d'avance sous forme d'un voile, comprenant de manière classique une étape appelée étape de pré-bouclage, dans laquelle les fibres et/ou filaments subissent individuellement un bouclage transversalement à la direction d'avance, éventuellement accompagné d'un étirage transversal, et s'accumulent sous forme d'un pseudo-fil ondulé dans lequel les fibres et/ou filaments sont parallélisés. Le procédé est caractérisé en ce qu'on effectue une étape préalable à l'étape de pré-bouclage qui est appelée "étape d'ondulation". Si l'étape de pré-bouclage est réalisée à l'aide d'un dispositif constitué par l'interpénétration d'un premier jeu de disques boucleurs avec un premier jeu de doigts boucleurs, l'étape d'ondulation est réalisée à l'aide d'un dispositif constitué par l'interpénétration d'un second jeu de disques appelés disques onduleurs avec un second jeu de doigts appelés doigts onduleurs, ce dispositif étant disposé en amont du dispositif de pré-bouclage par rapport à la direction d'avance du voile. Afin de mettre en oeuvre le procédé selon la présente invention, il est nécessaire que le dispositif d'ondulation présente une jauge qui est un multiple de la jauge du dispositif de pré-bouclage (soit n x j dans le cas où j est la jauge du dispositif de pré-bouclage). D'autre part, les dimensions et la disposition des différents éléments du dispositif d'ondulation doivent être calculés de telle sorte que la longueur d'une ondulation obtenue au sein du dispositif d'ondulation vaut approximativement le nombre de fois que la jauge du dispositif de pré-bouclage a été multipliée au sein du dispositif d'ondulation.The present invention relates to a method of manufacture of a textile product from fibers and / or filaments flowing in the direction of advance in the form a veil, conventionally comprising a step called pre-looping step, in which the fibers and / or filaments are individually looped transverse to the direction of advance, possibly accompanied by a transverse stretch, and accumulate under form of a wavy pseudo-yarn in which the fibers and / or filaments are parallelized. The process is characterized by what we do a step prior to the pre-looping step which is called "ripple step". If the step of pre-looping is carried out using a device constituted by the interpenetration of a first set of looping discs with a first set of curling fingers, the waving step is carried out using a device consisting of the interpenetration of a second set of discs called discs inverters with a second set of fingers called fingers inverters, this device being arranged upstream of the device pre-looping with respect to the direction of advance of the web. In order to implement the method according to the present invention it is necessary that the ripple device presents a gauge which is a multiple of the gauge of the pre-looping device (i.e. n x j in the case where j is the gauge of the pre-loop device). On the other hand, dimensions and arrangement of the different elements of the ripple device should be calculated so that the length of a ripple obtained within the ripple device is worth approximately the number of after the pre-loop device gauge has been multiplied within the ripple device.

Selon une première forme d'exécution, particulièrement simple, il suffit de proposer une jauge pour le dispositif d'ondulation qui est le double de la jauge du dispositif de pré-bouclage. Dans ce cas, la longueur d'une ondulation obtenue au sein du dispositif d'ondulation vaut deux fois la longueur d'une ondulation créée au sein du dispositif de pré-bouclage. Déjà selon cette forme d'exécution, les efforts seront divisés, selon les matières utilisées, d'un facteur 5 à 10 par rapport au cas de figure où l'on n'utilise pas de dispositif d'ondulation.According to a first embodiment, particularly simple, it suffices to propose a gauge for the ripple device which is double the gauge of the pre-loop device. In this case, the length of one ripple obtained within the ripple device is worth twice the length of a ripple created within the pre-loop device. Already in this form of execution, efforts will be divided, according to the subjects used, by a factor of 5 to 10 compared to the scenario where no corrugation device is used.

Selon une forme d'exécution encore préférée, il est envisageable de proposer un second dispositif d'ondulation en amont du dispositif d'ondulation précédent avec une jauge qui est à nouveau un multiple de la jauge du dispositif d'ondulation précédent.According to a still preferred embodiment, it is possible to propose a second corrugation device upstream of the previous corrugation device with a gauge which is again a multiple of the device gauge of previous ripple.

Selon une autre forme d'exécution, on pourrait également envisager d'intercaler entre le dispositif d'ondulation présentant une jauge nj et le dispositif de pré-bouclage tel que défini précédemment et présentant une jauge j, un dispositif d'ondulation supplémentaire présentant une jauge j. Dans ce cas, le dispositif de pré-bouclage est uniquement destiné à la formation du fil ondulé par accumulation des fibres et/ou filaments.According to another embodiment, one could also consider inserting between the device of corrugation having a gauge nj and the pre-looping device as defined above and presenting a gauge j, an additional corrugation device having a gauge j. In this case, the pre-loop device is only intended for the formation of corrugated wire by accumulation of fibers and / or filaments.

De manière avantageuse, on observe que les diamètres des disques onduleurs et de l'arbre supportant ces disques onduleurs du ou des dispositif(s) d'ondulation qui est (sont) disposé(s) en amont du dispositif de pré-bouclage, ne sont pas limités aux considérations d'accumulation des fibres et/ou filaments sous forme d'un fil et peuvent être de ce fait particulièrement importants.Advantageously, it is observed that the diameters of the inverter discs and of the shaft supporting these inverter discs of the corrugation device (s) which is (are) arranged upstream of the pre-loop device, are not limited to considerations of accumulation of fibers and / or filaments in the form of a thread and can be therefore particularly important.

De même, on n'est pas lié aux considérations d'accumulation des diverses fibres sous forme d'un fil à l'extrémité des doigts boucleurs. De cette manière, on peut également proposer un profil pour les dents des disques du ou des dispositifs d'ondulation qui est totalement différent de celui des disques boucleurs du dispositif de pré-bouclage destiné à former le fil. En particulier, on peut envisager que les disques onduleurs pour le ou les dispositifs d'ondulation présentent une denture inversée par rapport à ceux du dispositif de pré-bouclage en vue de faciliter l'engagement du voile.Similarly, we are not tied to considerations accumulation of various fibers in the form of a thread the tip of the looping fingers. In this way, we can also provide a profile for the disc teeth of the or ripple devices which is totally different that of the looping discs of the pre-looping device intended to form the wire. In particular, we can consider as the inverter disks for the device (s) of undulation have an inverted toothing with respect to those of the pre-loop device to facilitate the engagement of the veil.

Il est bien entendu que les présents procédé et dispositif doivent être considérés comme découlant des procédé et dispositif décrits dans le document EP-A-0 479 880 de l'une des deux Demanderesses, et que toutes les caractéristiques subsidiaires et les perfectionnements décrits dans ce document peuvent bien entendu être appliqués au présent procédé.It is understood that the present process and device should be considered to arise from process and device described in document EP-A-0 479 880 of one of the two Plaintiffs, and that all of the subsidiary characteristics and improvements described in this document can of course be applied to the present process.

Brève description des figures.Brief description of the figures.

La figure 1Figure 1
représente une forme d'exécution particulière du dispositif d'orientation de fibres et/ou filaments destiné à être utilisé dans un procédé dit de verticalisation.represents a particular form of execution fiber orientation device and / or filaments intended for use in a so-called verticalization process.
Les figures 2a et 2bFigures 2a and 2b
décrivent une vue schématique de profil du dispositif de verticalisation selon deux formes d'exécution de la présente invention.describe a schematic profile view of the verticalization device according to two embodiments of the present invention.
Les figures 3a, 3b et 3cFigures 3a, 3b and 3c
représentent plusieurs vues de face pour différentes étapes de l'avancement des fibres et/ou filaments à travers les dispositifs d'ondulation et de pré-bouclage.represent several front views for different stages of advancement fibers and / or filaments through the ripple and pre-loop devices.
Les figures 4, 5 et 6Figures 4, 5 and 6
représentent les efforts de bouclage pour un voile donné en fonction de la jauge (fig. 4), en fonction du poids du voile (fig. 5) et en fonction de l'angle d'orientation des fibres (fig. 6).represent loopback efforts for a veil given according to the gauge (fig. 4), depending on the weight of the veil (fig. 5) and depending on the angle fiber orientation (fig. 6).
La figure 7Figure 7
représente une vue de détail mettant en évidence la denture des différents disques onduleurs et boucleurs.represents a detail view highlighting evidence the teeth of the different discs inverters and loopers.
La figure 8Figure 8
représente une forme d'exécution préférée de disques utilisés dans l'étape d'ondulation selon une vue en coupe, ainsi que la denture qui y est présente. represents a form of execution favorite disc used in step wavy in a sectional view, as well than the teeth that are there.
La figure 9Figure 9
représente une forme d'exécution préférée dans laquelle apparaít le lien entre le dispositif étireur tel que décrit dans le document EP-A-0 520 911 et le dispositif selon la présente invention.represents a preferred embodiment in which the link between the stretching device as described in the document EP-A-0 520 911 and the device according to the present invention.
Description d'une forme d'exécution préférée de la présente invention.Description of a preferred embodiment of this invention.

La figure 1 représente une vue schématique d'un dispositif que l'on pourrait appeler dispositif d'orientation de fibres et/ou filaments et qui a fait l'objet d'une description détaillée dans le document EP-A-0 520 911.Figure 1 shows a schematic view of a device that we could call orientation device of fibers and / or filaments and which has been the subject of a detailed description in document EP-A-0 520 911.

Selon la forme d'exécution représentée à la figure 1, les fibres et/ou filaments subissent en 1 et 2 une étape de mélange et d'ouvraison des matières, de manière à constituer un premier voile 00 après passage dans une carde 3, qui présente un poids d'environ 20 g / m2 pour une largeur de 2,5 m. La vitesse d'avance est d'environ 100 m / minute.According to the embodiment shown in Figure 1, the fibers and / or filaments undergo in 1 and 2 a step of mixing and working the materials, so as to constitute a first veil 00 after passing through a card 3, which has a weight of about 20 g / m 2 for a width of 2.5 m. The feed speed is approximately 100 m / minute.

A ce niveau, le voile est traité selon la technique décrite dans le brevet européen EP-A-0 520 911, c'est-à-dire qu'il est introduit dans un étaleur - nappeur 5 de manière à plier successivement plusieurs fois le voile e fibres et/ou filaments issu de la carde 3.At this level, the veil is treated according to the technique described in European patent EP-A-0 520 911, that is to say that it is introduced into a spreader-lapper 5 so to successively fold the veil of fibers several times and / or filaments from the card 3.

Ensuite, le voile plié qui est aussi appelé "nappe" 0 est introduit dans un étireur 7 tel que décrit dans le document EP-A-0 520 911. Ce dispositif est muni de moyens rotatifs présentant à leur périphérie une garniture comportant des pointes que l'on fait pénétrer au coeur de la nappe 0.Then the folded veil which is also called "tablecloth" 0 is introduced into a stretcher 7 as described in the document EP-A-0 520 911. This device is provided with means rotary with a lining at their periphery comprising spikes which are penetrated into the heart of the tablecloth 0.

En vue de la réalisation d'un voile 10 destiné à une machine de verticalisation d'une largeur supérieure à 4 m, il est bien entendu nécessaire que la longueur du dispositif étaleur - nappeur soit supérieure à cette valeur, et de préférence soit de l'ordre de 5 m.For the production of a veil 10 intended for a verticalization machine with a width greater than 4 m, it is of course necessary that the length of the spreader - lapper device is greater than this value, and preferably about 5 m.

Etant donné que l'une des conditions pour effectuer le procédé dit de verticalisation réside dans le fait que le poids du voile 10 doit rester relativement faible, on n'effectue selon la présente forme d'exécution qu'un ou deux plis à l'aide du dispositif étaleur - nappeur 5.Since one of the conditions for carrying out the so-called verticalization process resides in the fact that the weight of the veil 10 must remain relatively low, only performs one or two according to this embodiment folds using the spreader - lapper 5.

On règle également le degré d'étirage du dispositif étireur de manière à ce que les fibres et/ou filaments dans le voile 10 étiré soient majoritairement répartis selon deux directions sensiblement symétriques par rapport à la direction longitudinale du produit étiré et qui va être la direction d'avance du voile 10.The degree of stretching of the device is also adjusted stretcher so that the fibers and / or filaments in the stretched veil 10 are mainly divided into two directions substantially symmetrical with respect to the longitudinal direction of the stretched product and that is going to be the web direction 10.

On peut facilement calculer l'angle a2 selon lequel les fibres s'orientent majoritairement par rapport à cette direction d'avance.
En effet, dans le cas où :

  • Le est la largeur d'entrée du voile 00,
  • Np est le nombre de plis effectués par le nappeur,
  • Ls est la largeur de la nappe pliée 0,
  • a1 est le demi-angle de nappage par rapport à la direction d'avance du voile 00,
  • E est le taux d'étirage,
  • Le2 est la largeur du voile 10 à la sortie de l'étireur, et
  • a2 est le demi-angle après étirage par rapport à la direction d'avance du voile 00 qui est orthogonale à la direction d'avance du voile 10,
on obtient facilement : tg(a1) = Le ( 2 * Np * Ls) tg(a2) = (Le * E)(2 * Np * Le2) One can easily calculate the angle a2 according to which the fibers orient themselves mainly with respect to this direction of advance.
Indeed, if:
  • Le is the entry width of the web 00,
  • Np is the number of folds made by the lapper,
  • Ls is the width of the folded sheet 0,
  • a1 is the half-angle of lapping relative to the direction of advance of the web 00,
  • E is the draw rate,
  • Le2 is the width of the web 10 at the outlet of the stretcher, and
  • a2 is the half-angle after stretching with respect to the direction of advance of the web 00 which is orthogonal to the direction of advance of the web 10,
we easily obtain: tg (a1) = The (2 * Np * Ls ) tg (( a2 ) = (( The * E ) (2 * Np * The 2 )

On observe dans la pratique que le taux d'étirage est de préférence limité à 3 afin d'éviter une mauvaise cohésion du voile (produit mité).It is observed in practice that the stretch rate is preferably limited to 3 in order to avoid bad cohesion of the veil (moth product).

Ceci signifie que selon cet exemple d'exécution, on obtiendra un angle a3 (complémentaire de a2) compris entre 40 et 75 degrés. This means that according to this example of execution, we will get an angle a3 (complementary to a2) between 40 and 75 degrees.

Les figures 2a et 2b représentent le dispositif de verticalisation selon deux formes d'exécution de la présente invention. Dans chaque cas, ce dispositif est constitué de manière classique d'un premier ensemble de disques boucleurs 91 disposés sur un arbre transversal 93 et entre lesquels viennent se placer des doigts boucleurs 95.Figures 2a and 2b show the device verticalization according to two embodiments of the present invention. In each case, this device consists of classic way of a first set of looping discs 91 arranged on a transverse shaft 93 and between which come to place looper fingers 95.

Selon la présente invention, un second dispositif appelé dispositif d'ondulation est disposé en amont du dispositif de pré-bouclage. Ce dispositif d'ondulation est constitué d'un ensemble de disques onduleurs 101 disposés sur un arbre 103 et entre lesquels viennent se placer des doigts onduleurs 105.According to the present invention, a second device called ripple device is arranged upstream of the pre-loop device. This ripple device is consisting of a set of inverter discs 101 arranged on a tree 103 and between which come to place fingers inverters 105.

Selon la forme d'exécution représentée à la figure 2a, les doigts onduleurs 101 et boucleurs 91 sont disposés de manière opposée par rapport aux disques onduleurs et boucleurs respectifs. Ceci permet un engagement sous forme de "S" du voile entre les disques onduleurs et boucleurs.According to the embodiment shown in the figure 2a, the undulating fingers 101 and looper 91 are arranged opposite to the inverter disks and respective looper. This allows engagement in the form of "S" of the web between the inverter and looper discs.

Selon la forme d'exécution représentée à la figure 2b, les doigts onduleurs 101 et boucleurs 91 sont disposés du même côté par rapport aux disques onduleurs et boucleurs, favorisant ainsi l'engagement d'un voile sous forme de "V", par exemple.According to the embodiment shown in the figure 2b, the undulating fingers 101 and looper 91 are arranged on the same side compared to the inverter and looper discs, thus favoring the engagement of a veil in the form of a "V", for example.

Il convient de noter que la jauge selon laquelle se présentent les disques onduleurs du dispositif d'ondulation est un multiple de la jauge du dispositif de pré-bouclage.It should be noted that the gauge according to which are the device's inverter disks ripple is a multiple of the gauge of the pre-loop.

Les figures 2a et 2b représentent deux formes d'exécution particulièrement simples, où pour une jauge j du dispositif de pré-bouclage, on a une jauge 2j du dispositif d'ondulation.Figures 2a and 2b show two shapes particularly simple execution, where for a gauge j of pre-loop device, we have a 2j gauge of the device ripple.

Il est bien entendu que d'autres formes d'exécution qui permettent d'avoir un facteur multiplicatif plus important ou une succession de plusieurs dispositifs d'ondulation sont également envisageables.It is understood that other forms of execution which allow to have a more multiplicative factor important or a succession of several devices ripples are also possible.

Les figures 3 représentent plusieurs vues de face des différents éléments constituant les deux dispositifs de pré-bouclage et d'ondulation dans lesquels on a représenté de manière schématique les disques et les doigts boucleurs et onduleurs.Figures 3 show several front views different elements constituting the two pre-looping and waving in which we have shown schematically the discs and the looping fingers and inverters.

Plus particulièrement, la figure 3a représente le comportement des fibres et/ou filaments au sein du dispositif appelé dispositif d'ondulation et qui est situé le plus en amont par rapport à la direction d'avance du voile 10. On observe que les fibres et/ou filaments qui rencontrent ce dispositif d'ondulation seront soumis individuellement à la création d'une ondulation présentant une période qui vaut bien sûr la jauge du dispositif d'ondulation.More particularly, FIG. 3a represents the behavior of fibers and / or filaments within the device called ripple device and which is located most upstream with respect to the direction of advance of the web 10. We observe that the fibers and / or filaments which meet this ripple device will be individually submitted to the creation of a ripple presenting a period which is worth of course the gauge of the corrugation device.

Selon la forme d'exécution représentée aux figures 3, la jauge du dispositif d'ondulation est simplement le double de celle du dispositif de pré-bouclage où s'effectue la formation du fil proprement dit.According to the embodiment shown in the figures 3, the gauge of the corrugator is simply the double that of the pre-loop device where the actual wire formation.

La figure 3b représente l'étape de transfert des fibres et/ou filaments entre le dispositif d'ondulation et le dispositif de pré-bouclage. Dans ce cas, les disques boucleurs 91 du dispositif de pré-bouclage sont disposés exactement dans le prolongement des doigts 105 du dispositif d'ondulation mais également dans le prolongement des disques 101 du dispositif d'ondulation. Par conséquent, on observe qu'il y a deux fois plus de disques dans le dispositif de pré-bouclage que dans le dispositif d'ondulation.Figure 3b shows the step of transferring fibers and / or filaments between the corrugator and the pre-looping device. In this case, the discs loops 91 of the pre-loop device are arranged exactly in line with the fingers 105 of the device ripple but also in the extension of the discs 101 of the corrugation device. Therefore, we observe that there are twice as many discs in the device pre-looping only in the corrugation device.

Il est bien entendu envisageable de remplacer les doigts onduleurs par tout autre élément curviligne qui aurait la même fonction.It is of course conceivable to replace the wavy fingers by any other curvilinear element which would have the same function.

A la figure 3c, on a représenté le comportement des fibres et/ou filaments au sein du dispositif appelé dispositif de pré-bouclage, qui est situé le plus en aval et qui permet la réalisation du pseudo-fil ondulé obtenu par l'accumulation des fibres et/ou filaments.In FIG. 3c, the behavior of the fibers and / or filaments within the device called pre-loop device, which is located furthest downstream and which allows the realization of the corrugated pseudo-wire obtained by the accumulation of fibers and / or filaments.

Dans le cas où le dispositif de pré-bouclage présente une jauge deux fois moins élevée que celle du dispositif d'ondulation, il s'avère important de vérifier que la longueur de l'ondulation obtenue pour les fibres et/ou filaments dans le dispositif d'ondulation est égale ou proche du double de la longueur de l'ondulation des fibres et/ou filaments créés par le dispositif de pré-bouclage en vue de constituer le pseudo-fil.In case the pre-loop device has a tonnage half the size of that of corrugation device, it is important to check that the length of the ripple obtained for the fibers and / or filaments in the corrugator is equal or close double the length of the wavy fibers and / or filaments created by the pre-loop device for constitute the pseudo-thread.

De cette manière, on évite tout étirage supplémentaire au sein de la matière dans le dispositif de pré-bouclage, l'effort d'étirage étant quasiment totalement encaissé par le premier arbre portant les disques onduleurs.In this way, we avoid any stretching additional within the material in the device pre-looping, the stretching effort being almost completely cashed by the first shaft carrying the inverter discs.

Afin d'atteindre ce but, il est nécessaire de calculer de manière précise la disposition et la taille des différents disques onduleurs ou boucleurs par rapport aux doigts onduleurs ou boucleurs correspondants, et en particulier leur taux d'interpénétration au sein des dispositif d'ondulation et de pré-bouclage.In order to achieve this goal, it is necessary to accurately calculate the layout and size of different inverter or looping discs compared to corresponding inverter or looper fingers, and in particular their rate of interpenetration within ripple and pre-loop device.

Les figures 4, 5 et 6 représentent les efforts de bouclage, soit en fonction de la jauge, soit en fonction du poids du voile, soit en fonction de l'angle d'orientation des fibres, les autres paramètres étant fixés dans chacun des cas.Figures 4, 5 and 6 show the efforts of closure, either according to the gauge, or according to the weight of the veil, i.e. depending on the orientation angle of the fibers, the other parameters being fixed in each of the case.

Plus particulièrement, la figure 4 représente les efforts d'ondulage en fonction de la jauge dans le cas d'un poids de voile constant et choisi à 20 g / m2, et dans lequel les fibres présentent un angle moyen d'orientation de 45° par rapport à la direction d'avance. Ces efforts ont été calculés pour deux sortes de matières : un voile en polyamide (PA) et un voile en polypropylène (PP). Néanmoins, on observe que les résultats sont assez similaires dans les deux cas et diminuent de façon spectaculaire en fonction de la jauge, en particulier dans le domaine d'une jauge 1/8 pouce (3,175 mm) à 2/8 pouce (6,136 mm).More particularly, FIG. 4 represents the corrugation forces as a function of the gauge in the case of a constant veil weight chosen at 20 g / m 2 , and in which the fibers have an average angle of orientation of 45 ° in relation to the direction of advance. These efforts were calculated for two kinds of materials: a polyamide veil (PA) and a polypropylene veil (PP). However, we observe that the results are quite similar in the two cases and decrease dramatically depending on the gauge, in particular in the range from 1/8 inch (3.175 mm) to 2/8 inch (6.136 mm) gauge. ).

On estime que pour un voile de 20 g / m2, arrivant vers un dispositif de pré-bouclage présentant une jauge double (de 2/8 pouce) de celle du dispositif de bouclage final présentant une jauge de 1/8 pouce, les efforts obtenus au sein du dispositif de bouclage final ont diminués d'un facteur 4 par rapport au cas où l'on n'utilisait pas de dispositif de pré-bouclage.It is estimated that for a veil of 20 g / m 2 , arriving towards a pre-looping device having a double gauge (of 2/8 inch) that of the final looping device having a gauge of 1/8 inch, the forces obtained within the final looping device have decreased by a factor of 4 compared to the case where a pre-looping device was not used.

La figure 5 représente les efforts d'ondulage en fonction du poids du voile P (g / m2) pour une jauge fixe choisie à 1/8 pouce et dans lequel les fibres présentent un angle moyen d'orientation de 45° par rapport à la direction d'avance, à nouveau dans le cas d'un voile en polypropylène (PP) et d'un voile en polyamide (PA).FIG. 5 represents the corrugation forces as a function of the weight of the veil P (g / m 2 ) for a fixed gauge chosen at 1/8 inch and in which the fibers have an average angle of orientation of 45 ° relative to the direction of advance, again in the case of a polypropylene (PP) veil and a polyamide (PA) veil.

On observe que les comportements sont assez similaires pour les deux sortes de voiles, et que les efforts augmentent de manière importante à partir d'une valeur supérieure à 20 g / m2.We observe that the behaviors are quite similar for the two kinds of sails, and that the efforts increase significantly from a value greater than 20 g / m 2 .

La figure 6 représente les efforts d'ondulage en fonction de l'angle d'orientation a des fibres pour un voile présentant un poids de 20 g / m2 et où la jauge est de 1/8 pouce, ceci pour deux matières, un voile en polyamide (PA) et un voile en polypropylène (PP).FIG. 6 represents the corrugation forces as a function of the angle of orientation of the fibers for a veil having a weight of 20 g / m 2 and where the gauge is 1/8 inch, this for two materials, one polyamide veil (PA) and a polypropylene veil (PP).

On observe à nouveau que les efforts augmentent de manière exponentielle en fonction de l'angle d'orientation des fibres.We again observe that the efforts increase by exponentially depending on the angle of orientation fibers.

Un autre aspect particulièrement important de la présente invention réside dans la résolution du problème de mauvais engagement du voile dans le dispositif de verticalisation.Another particularly important aspect of present invention lies in solving the problem of bad engagement of the veil in the device of verticalization.

En effet, le dispositif d'ondulation n'est plus soumis aux mêmes conditions pour ce qui concerne la denture que le dispositif de pré-bouclage qui doit permettre l'accumulation des fibres et/ou filaments sous forme d'un fil.Indeed, the ripple device is no longer subject to the same conditions with regard to teeth that the pre-looping device which must allow the accumulation of fibers and / or filaments in the form of a wire.

En effet, d'après le document EP-A-0 479 880, il était nécessaire que la denture des disques boucleurs situés dans le dispositif de pré-bouclage soit dessinée de telle manière que l'on obtienne une accumulation correcte et adéquate des fibres et/ou filaments dans le chas des aiguilles en vue de créer un fil ondulé, ce qui n'est bien entendu plus le cas pour la denture des disques onduleurs du dispositif d'ondulation. Indeed, according to document EP-A-0 479 880, it it was necessary that the toothing of the looper discs located in the pre-loop device be drawn in such a way so that we get a correct accumulation and adequate fibers and / or filaments in the eye of needles to create a wavy thread, which is not good heard more the case for the toothing of the inverter discs of the ripple device.

En particulier, on pourrait envisager que la denture des disques onduleurs du dispositif d'ondulation soit réalisée de telle manière à favoriser l'engagement du voile dans le dispositif de verticalisation.In particular, one could consider that the toothing of the inverter discs of the corrugation device designed in such a way as to encourage the engagement of the veil in the verticalization device.

On a représenté à la figure 7 les dentures des dispositifs d'ondulation et de pré-bouclage. On observe que la denture du dispositif d'ondulation est inverse à celle du dispositif de pré-bouclage, et favorisera l'engagement du voile.FIG. 7 shows the teeth of the ripple and pre-loop devices. We observe that the toothing of the corrugation device is opposite to that of the pre-closure device, and will encourage the engagement of sail.

A la figure 8, on a représenté un exemple d'exécution de disques onduleurs pouvant être utilisés dans le dispositif d'ondulation et qui présentent une denture qui permet l'engagement aisé et l'entraínement du voile dans le dispositif de verticalisation.In Figure 8, an example is shown execution of inverter discs that can be used in the corrugation device and which have teeth which allows easy engagement and training of the veil in the verticalization device.

Selon cette forme d'exécution représentée, le disque onduleur est constitué essentiellement de deux parties :

  • la première partie est un disque chanfreiné 201 parfaitement poli et a éventuellement subi un traitement de surface en vue d'abaisser le coefficient de frottement avec la fibre. Ce disque constitue le fond de la denture et permet le glissement latéral aisé des fibres et/ou filaments,
  • la deuxième partie du disque est constituée d'un disque découpé 203 qui sera par exemple soudé sur le premier, et qui permet de constituer la pointe de la denture permettant l'engagement et l'entraínement du voile.
According to this embodiment shown, the inverter disc essentially consists of two parts:
  • the first part is a chamfered disc 201 perfectly polished and has possibly undergone a surface treatment in order to lower the coefficient of friction with the fiber. This disc constitutes the bottom of the teeth and allows easy lateral sliding of the fibers and / or filaments,
  • the second part of the disc consists of a cut disc 203 which will for example be welded to the first, and which makes it possible to constitute the point of the toothing allowing the engagement and the training of the veil.

En utilisant des disques onduleurs tels que représentés à la figure 8, on observe un excellent comportement de la matière, qui permet encore de diminuer les efforts d'ondulage au sein du dispositif d'ondulation.Using inverter discs such as shown in Figure 8, there is excellent behavior of matter, which further reduces corrugation forces within the corrugation device.

A la figure 9, on a représenté le dispositif d'étirage tel que décrit dans le document EP-A-0 520 911, qui est constitué d'une série de cylindres successifs, et dans lequel le dernier cylindre appartenant à ce dispositif d'étirage 7 est dans le prolongement du premier des disques onduleurs du dispositif d'ondulation 9, de telle sorte que l'on puisse entraíner directement à la sortie du dispositif d'étirage, le voile constitué des fibres et/ou filaments.In Figure 9, there is shown the device as described in document EP-A-0 520 911, which consists of a series of successive cylinders, and in which the last cylinder belonging to this device 7 is in line with the first of the discs inverters of the corrugation device 9, so that we can train directly at the output of the device drawing, the web consisting of fibers and / or filaments.

Claims (9)

  1. Method for the manufacture of a textile product from fibres and/or filaments travelling in the feed direction in the form of a web, comprising a pre-looping step, in which the fibres and/or filaments individually undergo looping transversely to the feed direction, if appropriate accompanied by transverse drawing, and accumulate in the form of a crimped pseudo-yarn, in which the fibres and/or filaments are parallelized, characterized in that a step prior to the pre-looping step is carried out, the said step being called a crimping step and involving subjecting the fibres and/or filaments to crimping, the period and evolute of which are equal to a multiple of the period and evolute of the "crimp" produced in the pre-looping step.
  2. Device for carrying out the method according to Claim 1, comprising a device which is called a pre-looping device and which is formed by the interpenetration of a first set of looping discs (91) with a first set of looping fingers (95), characterized in that it also comprises a crimping device formed by the interpenetration of a second set of discs, called crimping discs (101), with a second set of fingers, called crimping fingers (105), and having a gauge which is equal to a multiple of the gauge of the pre-looping device.
  3. Device according to Claim 2, characterized in that the dimensions and arrangement of the various elements of the crimping device are calculated in such a way that the evolute of the crimp obtained within the crimping device is equal to the number of times the gauge of the pre-looping device within the crimping device.
  4. Device according to Claim 2 or 3, characterized in that the gauge of the crimping device is equal to double the gauge of the pre-looping device.
  5. Device according to any one of Claims 2 to 4, characterized in that a second crimping device is arranged upstream of the preceding crimping device, the said second crimping device having a gauge which is equal, once again, to a multiple of the gauge of the preceding crimping device.
  6. Device according to any one of Claims 2 to 4, characterized in that an additional crimping device is interposed between the crimping device and the pre-looping device, the said additional crimping device having a gauge which is equal to the gauge of the pre-looping device.
  7. Device according to any one of Claims 2 to 6, characterized in that the toothing of the crimping discs of the crimping device is different from that of the looping discs of the pre-looping device.
  8. Device according to any one of Claims 2 to 7, characterized in that the diameter of the crimping discs belonging to the crimping device or crimping devices is greater than or equal to the diameter of the looping discs of the pre-looping device.
  9. Device according to any one of Claims 2 to 8, characterized in that the discs are produced in two parts, the first part consisting of a perfectly polished chamfered disc (201) which, if appropriate, has undergone surface treatment in order to lower the coefficient of friction with the fibre, and the second part consisting of a cut-out disc (203) preferably welded to the first part and forming the tip of the toothing.
EP96927060A 1995-08-01 1996-07-26 Method and device for making textile products Expired - Lifetime EP0842313B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96927060A EP0842313B1 (en) 1995-08-01 1996-07-26 Method and device for making textile products
SI9630189T SI0842313T1 (en) 1995-08-01 1996-07-26 Method and device for making textile products

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP95870093 1995-08-01
EP95870093 1995-08-01
PCT/EP1996/003342 WO1997005315A1 (en) 1995-08-01 1996-07-26 Method and device for making textile products
EP96927060A EP0842313B1 (en) 1995-08-01 1996-07-26 Method and device for making textile products

Publications (2)

Publication Number Publication Date
EP0842313A1 EP0842313A1 (en) 1998-05-20
EP0842313B1 true EP0842313B1 (en) 2000-02-09

Family

ID=8222150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927060A Expired - Lifetime EP0842313B1 (en) 1995-08-01 1996-07-26 Method and device for making textile products

Country Status (16)

Country Link
EP (1) EP0842313B1 (en)
JP (1) JP2000501789A (en)
KR (1) KR19990036035A (en)
CN (1) CN1191584A (en)
AT (1) ATE189712T1 (en)
AU (1) AU702349B2 (en)
BR (1) BR9610036A (en)
CA (1) CA2228725A1 (en)
CZ (1) CZ28298A3 (en)
DE (1) DE69606645T2 (en)
DK (1) DK0842313T3 (en)
ES (1) ES2143215T3 (en)
MX (1) MXPA98000840A (en)
SI (1) SI0842313T1 (en)
TR (1) TR199800130T1 (en)
WO (1) WO1997005315A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE255184T1 (en) * 1994-09-30 2003-12-15 Tarkett Sommer Sa METHOD AND DEVICE FOR PRODUCING TEXTILE PRODUCTS IN MESH FORM FROM FIBERS AND/OR FILAMENTS AND PRODUCTS OBTAINED
AU3432100A (en) * 1999-04-06 2000-10-23 Sai Automotive Sommer Industrie Device and method for making textile products from fibres and/or filaments
EP1194627B1 (en) 1999-07-12 2005-05-18 Tarkett Sommer S.A. Method and device for orienting individual fibres and/or filaments present in a web

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649130B1 (en) * 1989-06-30 1991-10-04 Sommer Sa PROCESS AND DEVICE FOR MANUFACTURING TEXTILE PRODUCTS FROM FIBERS AND / OR FILAMENTS AND PRODUCTS OBTAINED
FR2678288B1 (en) * 1991-06-28 1994-11-18 Asselin Ets PROCESS FOR PRODUCING A SEMI-FINISHED NON-WOVEN PRODUCT AND SEMI-FINISHED NON-WOVEN PRODUCT.

Also Published As

Publication number Publication date
AU702349B2 (en) 1999-02-18
WO1997005315A1 (en) 1997-02-13
TR199800130T1 (en) 1998-05-21
ES2143215T3 (en) 2000-05-01
BR9610036A (en) 1999-12-21
DE69606645T2 (en) 2000-07-13
CN1191584A (en) 1998-08-26
EP0842313A1 (en) 1998-05-20
ATE189712T1 (en) 2000-02-15
AU6702396A (en) 1997-02-26
KR19990036035A (en) 1999-05-25
CA2228725A1 (en) 1997-02-13
SI0842313T1 (en) 2000-10-31
CZ28298A3 (en) 1998-07-15
DK0842313T3 (en) 2000-07-24
MXPA98000840A (en) 2004-01-28
JP2000501789A (en) 2000-02-15
DE69606645D1 (en) 2000-03-16

Similar Documents

Publication Publication Date Title
EP0479880B1 (en) Method and device for manufacturing textile products from fibres and/or filaments, products obtained
CH643384A5 (en) CLUSTER SET OF FIXING PINS.
CH418937A (en) A method of treating a tow and apparatus for its implementation
FR2678288A1 (en) PROCESS FOR PRODUCING A SEMI-FINISHED NON-WOVEN PRODUCT AND A SEMI-FINISHED NON-WOVEN PRODUCT
WO1993000465A1 (en) Method of manufacturing a non-woven, non-woven obtained specifically by this process and plant for manufacturing said non-woven
EP0842313B1 (en) Method and device for making textile products
FR2729976A1 (en) METHOD AND DEVICE FOR APPLYING A WIRE TO A SUPPORT
EP0317681B1 (en) Method and apparatus for the continuous preparation of plant stalks
EP0783608B1 (en) Method and device for producing textile products from fibres and/or filaments, and resulting products
WO2006106274A1 (en) Method for transforming and treating a textile yarn and implementing device
EP1171661B1 (en) Device and method for making textile products from fibres and/or filaments
EP1194627B1 (en) Method and device for orienting individual fibres and/or filaments present in a web
EP2418308B1 (en) Method and device for texturing threads for rugs or carpets, upstream from a heat treatment unit
WO1990001575A1 (en) Spinning method of the open end type, and device for implementing such method
FR3068371B1 (en) PROCESS FOR MANUFACTURING A UNIDIRECTIONAL SHORT FIBER TABLE
FR2903124A1 (en) Device for treating mat of stems made of plant fibers e.g. linen by brushing, comprises unit for maintaining and displacing mat, and unit for brushing across all/part of mat in direction starting from maintained part to free end of stems
FR2666957A1 (en) Packaging method for flexible fibrous materials, especially scutched flax, and device for implementation
FR2884262A1 (en) Textile wire treating device comprises elements with an abrasive surface that is in contact with the wire and inclined between a body of fixed guidance wire and winding system of the wire on cross roll
FR3063741A1 (en) FLATNESS
CH116569A (en) Stretcher device for preparatory machines and cotton spinning machines.
BE557996A (en)
BE565440A (en)
FR3059927A1 (en) METHOD FOR MANUFACTURING A SAW OF UNIDIRECTIONAL SHORT FIBERS HAVING AN IMPORTANT WIDTH
CH122967A (en) Apparatus for stretching and spinning textile fibers.
BE401801A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19971201

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL

AX Request for extension of the european patent

Free format text: SI PAYMENT 971201

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19990324

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: N.S.C., N.SCHLUMBERGER ET CIE, S.A.

Owner name: TARKETT SOMMER S.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL

AX Request for extension of the european patent

Free format text: SI PAYMENT 19971201

REF Corresponds to:

Ref document number: 189712

Country of ref document: AT

Date of ref document: 20000215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69606645

Country of ref document: DE

Date of ref document: 20000316

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: CABINET ROLAND NITHARDT CONSEILS EN PROPRIETE INDU

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000324

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2143215

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20000703

Year of fee payment: 5

Ref country code: GB

Payment date: 20000703

Year of fee payment: 5

Ref country code: DK

Payment date: 20000703

Year of fee payment: 5

Ref country code: DE

Payment date: 20000703

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000704

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000705

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000706

Year of fee payment: 5

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000707

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20000711

Year of fee payment: 5

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20000808

Year of fee payment: 5

Ref country code: BE

Payment date: 20000808

Year of fee payment: 5

EN4 Fr: notification of non filing translation in an earlier bopi is erroneous
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010726

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010726

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010726

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010731

BERE Be: lapsed

Owner name: S.A. N. SCHLUMBERGER ET CIE NSC

Effective date: 20010731

Owner name: S.A. TARKETT SOMMER

Effective date: 20010731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010726

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20020201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050726