EP1812638B2 - Drum for an entanglement machine for a non-woven using water jets - Google Patents

Drum for an entanglement machine for a non-woven using water jets Download PDF

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Publication number
EP1812638B2
EP1812638B2 EP05815201.8A EP05815201A EP1812638B2 EP 1812638 B2 EP1812638 B2 EP 1812638B2 EP 05815201 A EP05815201 A EP 05815201A EP 1812638 B2 EP1812638 B2 EP 1812638B2
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Prior art keywords
drum
perforations
parts
drum according
hollow
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German (de)
French (fr)
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EP1812638B1 (en
EP1812638A1 (en
Inventor
Frédéric NOELLE
Christian Decolin
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Andritz Perfojet SAS
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Andritz Perfojet SAS
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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
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet

Definitions

  • the present invention relates to machines for producing woven, knitted and non-woven textile products by the technique known as "jets of water” under pressure.
  • perforated rotary drums are generally thick and rigid metal tubes drilled with cylindrical or conical holes. These drums are not directly in contact with textile materials because their openings are too large. They are in particular covered by perforated supports of small holes such as metal or plastic fabrics.
  • the invention overcomes these disadvantages by a particular design of the surface of the perforated rotary drum.
  • the drum according to the invention can receive any type of metal or plastic fabrics, thin micro-perforated metal sleeves, metal sleeves whose surface has been previously embossed as well as plastic sleeves etched by laser.
  • the drum according to the invention offers an excellent and uniform drainage of the water coming from the jets of water, appreciably improves the quality of the nonwovens produced, without causing the attachment of textile materials such as fibers and other constituents of the textile products and this whatever the water pressures used for the water jets.
  • the drum according to the invention also allows easy disassembly of the outer sleeves without damage.
  • Nonwovens produced with a drum according to the invention are free of marks or impression of the drum regardless of the pressure of the jets.
  • the invention relates to a drum according to claim 1.
  • the recessed portions can be easily obtained by machining.
  • the recessed portions of the lateral surface are obtained by machining the already cylindrical blank of the drum. Machining is in fact a cheap technique for producing recessed portions, stripes or recesses according to the preferred dimensions. The machining also allows to obtain an excellent precision on the dimensions and to weaken as much as possible the solid parts.
  • the ratio of the area of the perforations to the total area of the outer lateral surface is between 30% and 90%, but preferably it is between 60 and 80%, which greatly reduces the twists of the jet.
  • the thickness of the side wall of the drum is preferably between 1 mm and 60 mm and better still between 5 mm and 40 mm.
  • the perforations have a diameter of between 3 and 20 mm.
  • the thickness of the recessed portions is preferably between 0.25 mm and 5 mm and better still between 0.5 mm and 2 mm and their width between 0.6 and 20 mm.
  • the length of a non-recessed portion is from 30 to 100% of the diameter of a perforation and the width is from 0.6 to 4 mm, preferably 2 mm.
  • the ratio of the surface area of the recessed portions to the surface of the solid portions is greater than 70 and preferably from 70 to 95.
  • the drum is preferably made of bronze or stainless steel and has an outside diameter of between 200 mm and 1200 mm.
  • the perforations are preferably cylindrical or conical, their circular cross section greatly facilitating the manufacture of the drum.
  • the water jets have a diameter of 50 to 250 microns and the pressure of the water preferably from 10 to 500 bar.
  • a recessed portion leading to two adjacent perforations is on the line passing through the centers of these two perforations and, better still, there are only two parts. hollowed out leading to each perforation.
  • the recessed parts are interrupted by the perforations. At diametrically opposite points of each perforation leave two recessed portions. The diameters just discussed, if they are not aligned, are parallel from one pair of perforations to another.
  • the invention also relates to a machine for entanglement by water jets of a nonwoven, comprising a drum, means for driving the drum in rotation, a sleeve provided with openings, threaded onto the drum and an injector system arranged so as to project jets of water on the outer lateral surface of the sleeve, characterized in that the drum is as defined according to the invention.
  • the particularly cylindrical openings have a larger dimension of between 30 and 800 ⁇ m and the sleeve has a thickness of between 0.10 mm and 3 mm.
  • the ratio of the area of the openings of the sleeve to the total area of its external lateral surface is preferably between 5% and 50%.
  • the machine represented in figure 1 comprises a fixed and hollow body 1 which is pierced with slots facing injectors 2 and 3 capable of sending jets of water with a diameter of 150 microns under a pressure of 250 bar.
  • the body 1 is surrounded by a perforated drum 4 which is rotated about its axis by a motor 5 with the aid of a driving device 6.
  • the drum 4 is surrounded by a perforated sleeve 7 openwork of 200 microns in diameter, which may be a fabric, a thin microperforated metal envelope, an embossed sleeve, a sleeve of plastic material etched by laser.
  • the injectors 2, 3 are arranged to project the jets of water on the outer lateral surface of the sleeve.
  • the drum 4 has non-recessed portions 8 or intact which are derived from the outer lateral surface and the recessed portions 9 machined in the surface of the drum 4 which is directed towards the sleeve 7.
  • the portions 8 delimit through cylindrical perforations 10.
  • the free ends of the parts 8 are in contact with the inner face of the sleeve 7.
  • the drum comprises non-recessed portions 11 and recesses 12, the tips 13 of the non-recessed portions pointing to the sleeve 7 are in contact with the inner face thereof.
  • the perforations 10 are arranged in helical rows.
  • the diameter D of the perforations 10 is 10 mm.
  • the length L of the non-recessed portions is about 4 mm.
  • the width of the recessed portions 9 is 2 mm. All the hollow parts 9 open on the perforations.
  • the entire outer face of the drum is the same surface with the exception of the recessed portions 9 which are recessed.
  • the width of the recessed portions 9 is 8 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The invention relates to a drum wherein the lateral surface thereof is provided with perforations that are separated by full parts from recessed parts and which are present on the full parts with an outer lateral surface. Application: in an entanglement machine for a nonwoven, using water jets.

Description

La présente invention se rapporte aux machines de production de produits textiles tissés, tricotés et non tissés par la technique connue sous le nom de « jets d'eau » sous pression.The present invention relates to machines for producing woven, knitted and non-woven textile products by the technique known as "jets of water" under pressure.

Dans les documents US 3 214 819 , 3 508 308 et 4 190 695 , on a décrit un procédé pour la fabrication de nappes textiles nontissées, dans lequel la cohésion et l'entrelacement des fibres élémentaires entre elles sont obtenues par l'action d'une pluralité de jets d'eau à haute pression traversant une nappe ou un voile en déplacement sur un support perforé.In documents US 3,214,819 , 3,508,308 and 4,190,695 there has been described a process for the production of nonwoven textile webs in which the cohesion and interlacing of the elementary fibers with one another is obtained by the action of a plurality of high-pressure water jets passing through a web or sail moving on a perforated support.

Dans le document US 5 791 028 , on décrit une machine de traitement par jets d'eau de produits textiles sur des tambours rotatifs aspirants.In the document US 5,791,028 a machine for treating textile products with water jets on suction rotary drums is described.

Que ce soit pour la production de nontissés ou le traitement des textiles, les tambours rotatifs perforés sont généralement des tubes métalliques épais et rigides percés de trous cylindriques ou coniques. Ces tambours ne sont pas directement au contact des matières textiles car leurs ouvertures sont de trop grandes dimensions. Ils sont notamment recouverts par des supports perforés de trous de petites dimensions comme des tissus métalliques ou plastiques.Whether for the production of nonwovens or the treatment of textiles, perforated rotary drums are generally thick and rigid metal tubes drilled with cylindrical or conical holes. These drums are not directly in contact with textile materials because their openings are too large. They are in particular covered by perforated supports of small holes such as metal or plastic fabrics.

Dans le US 5 301 401 , on décrit un tambour suivant le préambule de la revendication 1.In the US 5,301,401 a drum according to the preamble of claim 1 is described.

Plus récemment dans le EP 0776391 , on a décrit un manchon mince dont la paroi est perforée de micro orifices distribués de manière aléatoire.More recently in the EP 0776391 a thin sleeve has been described, the wall of which is perforated with randomly distributed micro-orifices.

Plus récemment encore, il a été proposé de graver et de percer des tubes minces en matière plastique à l'aide de laser pour conférer aux nontissés des motifs en trois dimensions avec l'action de jets d'eau.More recently, it has been proposed to engrave and drill thin plastic tubes with laser to give the nonwovens three-dimensional patterns with the action of jets of water.

Tous ces supports de traitement des textiles et de consolidation de nontissés par l'action de jets d'eau, tissus métalliques et plastiques, manchons microperforés, manchons gravés laser ont en commun leur faible épaisseur et leur faible rigidité. Et particulièrement, lorsqu'on a affaire à des pièces de production industrielle de plusieurs mètres de longueur.All these textile treatment media and nonwovens consolidation by the action of water jets, metal and plastic fabrics, micro-perforated sleeves, laser engraved sleeves have in common their small thickness and low rigidity. And especially, when dealing with pieces of industrial production of several meters in length.

C'est pourquoi, ces supports minces sont supportés par des tambours perforés épais et rigides. Il est connu d'utiliser par exemple des tambours rotatifs de structure dite en nid d'abeille. Cette solution technique est onéreuse, mais présente l'avantage de donner une très grande surface ouverte, de 75 % à 90 %, ce qui se traduit par un excellent et très uniforme drainage de l'eau des jets d'eau avec une aspiration par vide d'air à l'intérieur du tambour et en regard des injecteurs délivrant les jets d'eau.Therefore, these thin supports are supported by thick and rigid perforated drums. It is known to use, for example, rotary drums of honeycomb structure. This technical solution is expensive, but has the advantage of giving a very large open area, from 75% to 90%, which results in an excellent and very uniform drainage of water jets of water with suction by air vacuum inside the drum and next to the injectors delivering the jets of water.

Une autre solution technique beaucoup moins onéreuse que la structure en nid d'abeille consiste à utiliser des tambours percés de trous cylindriques ou coniques. Ces tambours moins onéreux présentent comme principal inconvénient leur surface ouverte de moins de 80 % et plus généralement de l'ordre de 30 % à 60 %. Lorsque ces tambours perforés de trous sont utilisés comme support des manchons perforés et des tissus, ils génèrent des problèmes d'uniformité d'aspiration et de drainage de l'eau des jets d'eau. On observe une perte d'efficacité des jets d'eau ainsi que des défauts d'aspect, particulièrement dans les zones correspondant aux parties pleines du tambour séparant les trous du tambour. Dans le US 5 609 046 , des bandes métalliques sont soudées sur le tambour, tandis qu'au US 6 660 360 B1 elles y sont rapportées. Dans les deux cas, il se produit des rebondissement de jets, on observe des défauts sur la nappe et on obture des perforations.Another technical solution much less expensive than the honeycomb structure is to use drums drilled with cylindrical or conical holes. These less expensive drums have as their main disadvantage their open area of less than 80% and more generally of the order of 30% to 60%. When these drilled hole drums are used as support for perforated sleeves and fabrics, they generate problems of uniformity of suction and drainage of the water jets. There is a loss of efficiency of the water jets as well as appearance defects, particularly in the areas corresponding to the solid portions of the drum separating the holes of the drum. In the US 5,609,046 , metal strips are welded to the drum, while US 6,660,360 B1 they are reported there. In both cases, jet bouncing occurs, defects are observed on the sheet and punctures are closed.

Pour pallier ces inconvénients de perte d'efficacité et ces défauts d'aspect, il est couramment interposé un tissu métallique à mailles grossières entre le tambour perforé et le manchon externe qui reçoit les jets d'eau.To overcome these drawbacks of loss of efficiency and these defects in appearance, it is commonly interposed a coarse mesh metal fabric between the perforated drum and the outer sleeve that receives the jets of water.

Si cette technique procure une nette amélioration du drainage de l'eau et une réduction notable des défauts d'aspect, elle engendre aussi de nombreux inconvénients et en particulier un accrochage des matières constituantes des textiles et des nontissés comme des fibres, des filaments, des fragments de fibres ou de filaments et des produits d'ensimage présents sur les fibres. Ce phénomène d'accrochage est d'autant plus important que les pressions utilisées pour les jets d'eau sont élevées. Ce phénomène d'accrochage de fibres s'amplifie avec le temps et requiert des nettoyages de plus en plus fréquents. Ce qui impose des arrêts de production, voire même le remplacement des pièces qui deviennent inutilisables. Il est parfois impossible de retirer les manchons perforés et il faut alors les détruire et les remplacer par des pièces neuves.If this technique provides a clear improvement in the drainage of water and a significant reduction in appearance defects, it also causes many disadvantages and in particular a fastening of the constituent materials of textiles and nonwovens such as fibers, filaments, fragments of fibers or filaments and sizing products present on the fibers. This hooking phenomenon is all the more important as the pressures used for the jets of water are high. This phenomenon of fiber attachment increases with time and requires cleaning more and more frequent. This imposes production stops, or even the replacement of parts that become unusable. It is sometimes impossible to remove the perforated sleeves and they must be destroyed and replaced with new parts.

L'invention pallie ces inconvénients par une conception particulière de la surface du tambour rotatif perforé. Le tambour selon l'invention peut recevoir tout type de tissus métalliques ou plastiques, manchons métalliques minces micro perforés, manchons métalliques dont la surface a été préalablement embossée ainsi que des manchons plastiques gravés par laser.The invention overcomes these disadvantages by a particular design of the surface of the perforated rotary drum. The drum according to the invention can receive any type of metal or plastic fabrics, thin micro-perforated metal sleeves, metal sleeves whose surface has been previously embossed as well as plastic sleeves etched by laser.

Le tambour selon l'invention offre un excellent et uniforme drainage de l'eau provenant des jets d'eau, améliore sensiblement la qualité des nontissés produits, sans provoquer d'accrochage des matières textiles comme les fibres et autres constituants des produits textiles et ceci quelles que soient les pressions d'eau utilisées pour les jets d'eau.The drum according to the invention offers an excellent and uniform drainage of the water coming from the jets of water, appreciably improves the quality of the nonwovens produced, without causing the attachment of textile materials such as fibers and other constituents of the textile products and this whatever the water pressures used for the water jets.

Le tambour selon l'invention permet aussi un démontage aisé des manchons extérieurs sans endommagement.The drum according to the invention also allows easy disassembly of the outer sleeves without damage.

Les nontissés produits avec un tambour selon l'invention sont exempts de marques ou d'empreinte du tambour quelle que soit la pression des jets.Nonwovens produced with a drum according to the invention are free of marks or impression of the drum regardless of the pressure of the jets.

L'invention a pour objet un tambour suivant la revendication 1.The invention relates to a drum according to claim 1.

Les parties évidées peuvent être obtenues facilement par usinage.The recessed portions can be easily obtained by machining.

Les parties évidées de la surface latérale sont obtenues par usinage de l'ébauche déjà cylindrique du tambour. L'usinage est en effet une technique bon marché de réalisation de parties évidées, de rayures ou de creux selon les dimensions préférées. L'usinage permet aussi d'obtenir une excellente précision sur les dimensions et d'affaiblir le moins possible les parties pleines.The recessed portions of the lateral surface are obtained by machining the already cylindrical blank of the drum. Machining is in fact a cheap technique for producing recessed portions, stripes or recesses according to the preferred dimensions. The machining also allows to obtain an excellent precision on the dimensions and to weaken as much as possible the solid parts.

Le rapport de la superficie des perforations à la superficie totale de la surface latérale extérieure est compris entre 30 % et 90 %, mais de préférence il est compris entre 60 et 80 %, ce qui diminue beaucoup les rebondissements du jet.The ratio of the area of the perforations to the total area of the outer lateral surface is between 30% and 90%, but preferably it is between 60 and 80%, which greatly reduces the twists of the jet.

L'épaisseur de la paroi latérale du tambour est de préférence comprise entre 1 mm et 60 mm et mieux entre 5 mm et 40 mm. Les perforations ont un diamètre compris entre 3 et 20 mm.The thickness of the side wall of the drum is preferably between 1 mm and 60 mm and better still between 5 mm and 40 mm. The perforations have a diameter of between 3 and 20 mm.

L'épaisseur des parties évidées est de préférence comprise entre 0,25 mm et 5 mm et mieux comprise entre 0,5 mm et 2 mm et leur largeur entre 0,6 et 20 mm.The thickness of the recessed portions is preferably between 0.25 mm and 5 mm and better still between 0.5 mm and 2 mm and their width between 0.6 and 20 mm.

De préférence, la longueur d'une partie non évidée représente de 30 à 100 % du diamètre d'une perforation et la largeur est comprise entre 0,6 et 4 mm, en étant de préférence de 2 mm.Preferably, the length of a non-recessed portion is from 30 to 100% of the diameter of a perforation and the width is from 0.6 to 4 mm, preferably 2 mm.

Dans le mode de réalisation le plus préféré, le rapport de la surface des parties évidées à la surface des parties pleines est supérieur à 70 et, de préférence, compris entre 70 et 95. Le tambour est de préférence en bronze ou en acier inoxydable et a un diamètre extérieur compris entre 200 mm et 1 200 mm. Les perforations sont de préférence cylindriques ou coniques, leur section droite circulaire facilitant beaucoup la fabrication du tambour. De préférence, les jets d'eau ont un diamètre de 50 à 250 µm et la pression de l'eau de préférence de 10 à 500 bar.In the most preferred embodiment, the ratio of the surface area of the recessed portions to the surface of the solid portions is greater than 70 and preferably from 70 to 95. The drum is preferably made of bronze or stainless steel and has an outside diameter of between 200 mm and 1200 mm. The perforations are preferably cylindrical or conical, their circular cross section greatly facilitating the manufacture of the drum. Preferably, the water jets have a diameter of 50 to 250 microns and the pressure of the water preferably from 10 to 500 bar.

Suivant un mode de réalisation très préféré permettant d'avoir une ouverture maximale du tambour, une partie évidée débouchant sur deux perforations voisines est sur la ligne passant par les centres de ces deux perforations et, mieux encore, il n'y a que deux parties évidées débouchant sur chaque perforation. Les parties évidées sont interrompues par les perforations. En des points diamétralement opposés de chaque perforation partent deux parties évidées. Les diamètres dont il vient d'être question, s'ils ne sont pas alignés, sont parallèles d'un couple de perforations à l'autre.According to a very preferred embodiment allowing to have a maximum opening of the drum, a recessed portion leading to two adjacent perforations is on the line passing through the centers of these two perforations and, better still, there are only two parts. hollowed out leading to each perforation. The recessed parts are interrupted by the perforations. At diametrically opposite points of each perforation leave two recessed portions. The diameters just discussed, if they are not aligned, are parallel from one pair of perforations to another.

L'invention vise aussi une machine d'enchevêtrement par jets d'eau d'un nontissé, comprenant un tambour, des moyens d'entraînement en rotation du tambour, un manchon muni d'ajours, enfilé sur le tambour et un système injecteur disposé de manière à projeter des jets d'eau sur la surface latérale extérieure du manchon, caractérisé en ce que le tambour est tel que défini suivant l'invention.The invention also relates to a machine for entanglement by water jets of a nonwoven, comprising a drum, means for driving the drum in rotation, a sleeve provided with openings, threaded onto the drum and an injector system arranged so as to project jets of water on the outer lateral surface of the sleeve, characterized in that the drum is as defined according to the invention.

De préférence les ajours notamment cylindriques ont une plus grande dimension comprise entre 30 et 800 µm et le manchon a une épaisseur comprise entre 0,10 mm et 3 mm. Le rapport de la superficie des ajours du manchon à la superficie totale de sa surface latérale extérieure est comprise de préférence entre 5 % et 50 %.Preferably, the particularly cylindrical openings have a larger dimension of between 30 and 800 μm and the sleeve has a thickness of between 0.10 mm and 3 mm. The ratio of the area of the openings of the sleeve to the total area of its external lateral surface is preferably between 5% and 50%.

Aux dessins annexés, donnés uniquement à titre d'exemple :

  • la figure 1 est une vue en perspective schématique d'une machine d'enchevêtrement d'un nontissé par jets d'eau suivant l'invention,
  • la figure 2 est une vue partielle en coupe de la partie entourée d'un cercle à la figure 1, et
  • la figure 3 est une vue analogue à la figure 2 d'une variante.
  • Les figures 4 et 5 sont des vues partielles de développées de deux modes de réalisation.
In the accompanying drawings, given solely by way of example:
  • the figure 1 is a schematic perspective view of an entanglement machine of a nonwoven fabric by jets of water according to the invention,
  • the figure 2 is a partial sectional view of the part surrounded by a circle at the figure 1 , and
  • the figure 3 is a view similar to the figure 2 of a variant.
  • The figures 4 and 5 are partial developed views of two embodiments.

La machine représentée à la figure 1 comprend un corps 1 fixe et creux qui est percé de fentes en regard d'injecteurs 2 et 3 aptes à envoyer des jets d'eau d'un diamètre de 150 microns sous une pression de 250 bar.The machine represented in figure 1 comprises a fixed and hollow body 1 which is pierced with slots facing injectors 2 and 3 capable of sending jets of water with a diameter of 150 microns under a pressure of 250 bar.

Le corps 1 est entouré d'un tambour 4 perforé qui est entraîné en rotation autour de son axe par un moteur 5 à l'aide d'un dispositif 6 d'entraînement. Le tambour 4 est entouré d'un manchon 7 ajouré d'ajours de 200 µm de diamètre, qui peut être un tissu, une enveloppe métallique mince microperforée, un manchon embossé, un manchon en matière plastique gravé par laser.The body 1 is surrounded by a perforated drum 4 which is rotated about its axis by a motor 5 with the aid of a driving device 6. The drum 4 is surrounded by a perforated sleeve 7 openwork of 200 microns in diameter, which may be a fabric, a thin microperforated metal envelope, an embossed sleeve, a sleeve of plastic material etched by laser.

Les injecteurs 2, 3 sont disposés de manière à projeter les jets d'eau sur la surface latérale extérieure du manchon.The injectors 2, 3 are arranged to project the jets of water on the outer lateral surface of the sleeve.

A la figure 2, le tambour 4 présente des parties non évidées 8 ou intactes qui sont issues de la surface latérale extérieure et des parties évidées 9 usinées dans la surface du tambour 4 qui est dirigée vers le manchon 7. Les parties 8 délimitent des perforations 10 cylindriques traversantes. Les extrémités libres des parties 8 sont en contact avec la face intérieure du manchon 7.To the figure 2 , the drum 4 has non-recessed portions 8 or intact which are derived from the outer lateral surface and the recessed portions 9 machined in the surface of the drum 4 which is directed towards the sleeve 7. The portions 8 delimit through cylindrical perforations 10. The free ends of the parts 8 are in contact with the inner face of the sleeve 7.

A la figure 3, le tambour comporte des parties non évidées 11 et des creux 12, les pointes 13 des parties non évidées pointant vers le manchon 7 sont en contact avec la face intérieure de celui-ci.To the figure 3 , the drum comprises non-recessed portions 11 and recesses 12, the tips 13 of the non-recessed portions pointing to the sleeve 7 are in contact with the inner face thereof.

A la figure 4, les perforations 10 sont disposées suivant des rangés en hélices. Le diamètre D des perforations 10 est de 10 mm. La longueur L des parties non évidées est d'environ 4 mm. La largeur des parties évidées 9 est de 2 mm. Toutes les parties évidées 9 débouchent sur les perforations. L'ensemble de la face extérieure du tambour est une même surface à l'exception des parties évidées 9 qui sont en retrait.To the figure 4 the perforations 10 are arranged in helical rows. The diameter D of the perforations 10 is 10 mm. The length L of the non-recessed portions is about 4 mm. The width of the recessed portions 9 is 2 mm. All the hollow parts 9 open on the perforations. The entire outer face of the drum is the same surface with the exception of the recessed portions 9 which are recessed.

Ce qui distingue essentiellement le mode de réalisation de la figure 5 de celui de la figure 4, est qu'il n'y a que deux parties 8 non évidées des parties pleines qui touchent chaque perforation et qu'une partie 8 non évidée qui touche à ses extrémités deux perforations voisines est sur la ligne passant par les centres de ces deux perforations 10. L'angle X de la ligne de ces centres avec une génératrice, parallèle à l'axe du tambour, est compris entre 0 et 180°. Il est de 90° à la figure 4. Les deux parties 8 non évidées qui touchent une même perforation le font en des points diamétralement opposés.What essentially distinguishes the embodiment of the figure 5 from that of the figure 4 is that there are only two non-recessed portions 8 of the solid parts that touch each perforation and that a non-recessed portion 8 which touches at its ends two adjacent perforations is on the line passing through the centers of these two perforations 10. The angle X of the line of these centers with a generatrix, parallel to the axis of the drum, is between 0 and 180 °. It is 90 ° to the figure 4 . The two non-recessed portions 8 which touch the same perforation do so at diametrically opposed points.

La largeur des parties 9 évidées est de 8 mm.The width of the recessed portions 9 is 8 mm.

Claims (13)

  1. Drum (4) the outer side face of which is provided with perforations separated by solid parts, with hollow parts which are machined on the outer surface of the solid parts, in which the whole of the side face is a same face, with the exception of the hollow parts, which are recessed, in which all the hollow parts open onto the perforations, characterised in that the ratio of the surface area of the perforations and the total surface area of the outer side face is between 30 and 90%.
  2. Drum (4) according to claim 1, characterised in that the perforations are cylindrical or conical.
  3. Drum according to one of the preceding claims, characterised in that the (minimum) thickness of the side wall of the drum is between 1 mm and 60 mm and preferably between 5 and 40 mm.
  4. Drum according to one of the preceding claims, characterised in that the thickness of the hollow parts is between 0.25 and 5 mm, preferably between 0.5 mm and 2 mm.
  5. Drum according to one of the preceding claims, characterised in that the drum is made of metal, preferably bronze or stainless steel.
  6. Drum according to one of the preceding claims, characterised in that the diameter of the perforations is between 3 and 20 mm.
  7. Drum according to one of the preceding claims, characterised in that the length of a non-recessed part constitutes 30 to 100% of the diameter of a perforation.
  8. Drum according to one of the preceding claims, characterised in that the width of a non-hollow part is between 0.6 and 4 mm.
  9. Drum according to one of the preceding claims, characterised in that a non-hollow part of a solid part, which touches two adjacent perforations at its ends, is on the line passing through the centres of these two perforations.
  10. Drum according to claim 9, characterised in that there are only two non-hollow parts of the solid part touching each perforation.
  11. Drum according to one of the preceding claims, characterised in that the ratio of the surface of the hollow parts to the surface of the solid parts is between 70 and 95.
  12. Machine for entangling a non-woven fabric by means of water jets, comprising a drum (4), means (5, 6) for rotationally driving the drum (4), a sleeve (7) provided with openings pulled over the drum (4) and an injector system (2, 3) arranged so as to spray water jets over the outer side face of the sleeve (7), characterised in that the drum (4) is as defined in any one of the preceding claims.
  13. Use of a machine according to claim 13 for manufacturing a non-woven with no marks or impressions.
EP05815201.8A 2004-11-10 2005-11-04 Drum for an entanglement machine for a non-woven using water jets Active EP1812638B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0411975A FR2877679B1 (en) 2004-11-10 2004-11-10 DRUM NATURALLY FOR A MACHINE FOR ENCHEVETREMENT OF A NONTISSE BY JETS OF WATER.
PCT/FR2005/002746 WO2006051191A1 (en) 2004-11-10 2005-11-04 Drum for an entanglement machine for a non-woven using water jets

Publications (3)

Publication Number Publication Date
EP1812638A1 EP1812638A1 (en) 2007-08-01
EP1812638B1 EP1812638B1 (en) 2011-10-19
EP1812638B2 true EP1812638B2 (en) 2014-08-13

Family

ID=34951236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05815201.8A Active EP1812638B2 (en) 2004-11-10 2005-11-04 Drum for an entanglement machine for a non-woven using water jets

Country Status (6)

Country Link
US (1) US7818853B2 (en)
EP (1) EP1812638B2 (en)
AT (1) ATE529555T1 (en)
ES (1) ES2371742T5 (en)
FR (1) FR2877679B1 (en)
WO (1) WO2006051191A1 (en)

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DE102005045224B3 (en) * 2005-09-22 2006-12-07 Fleissner Gmbh Device for reinforcing and/or structuring a web of nonwoven or knitted material by water jet treatment comprises a perforated drum, a coarse lower screen and a finer upper screen in the form of a shrink-fitted tube
DE102006007834A1 (en) * 2006-02-17 2007-09-06 Fleissner Gmbh Drum tray for creating structures and / or relief patterns on the surface of a woven or non-woven cell material or nonwoven
ATE444388T1 (en) * 2006-08-04 2009-10-15 Stork Prints Austria Gmbh SCREEN, ESPECIALLY FOR PRODUCING NON-WOVEN MATERIALS USING A GAS OR LIQUID JET CONFIGURATION PROCESS
IL177788A (en) * 2006-08-30 2011-03-31 N R Spuntech Ind Ltd Cylindrical suction box assembly
DE102011113672A1 (en) * 2011-09-20 2013-03-21 Trützschler Nonwovens Gmbh Method and device for perforating a nonwoven by hydrodynamic needling
DE202013102203U1 (en) * 2012-08-23 2013-06-06 Trützschler GmbH & Co Kommanditgesellschaft Device for the hydrodynamic consolidation of nonwovens, woven or knitted fabrics
DE102018119570A1 (en) * 2018-08-13 2020-02-13 TRüTZSCHLER GMBH & CO. KG Device for strengthening and / or structuring a fleece and a structural shell

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Also Published As

Publication number Publication date
US20080092350A1 (en) 2008-04-24
EP1812638B1 (en) 2011-10-19
US7818853B2 (en) 2010-10-26
ES2371742T5 (en) 2014-09-17
FR2877679B1 (en) 2007-04-27
FR2877679A1 (en) 2006-05-12
WO2006051191A1 (en) 2006-05-18
EP1812638A1 (en) 2007-08-01
ES2371742T3 (en) 2012-01-09
ATE529555T1 (en) 2011-11-15

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