EP1497488B1 - Vliesstoff mit teilweise verbundenen schichten sowie verfahren und vorrichtung zu dessen herstellung - Google Patents

Vliesstoff mit teilweise verbundenen schichten sowie verfahren und vorrichtung zu dessen herstellung Download PDF

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Publication number
EP1497488B1
EP1497488B1 EP03746316A EP03746316A EP1497488B1 EP 1497488 B1 EP1497488 B1 EP 1497488B1 EP 03746316 A EP03746316 A EP 03746316A EP 03746316 A EP03746316 A EP 03746316A EP 1497488 B1 EP1497488 B1 EP 1497488B1
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EP
European Patent Office
Prior art keywords
roll
webs
generatrix
nonwoven
machine according
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Expired - Lifetime
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EP03746316A
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English (en)
French (fr)
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EP1497488A2 (de
Inventor
Frédéric NOELLE
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Rieter Perfojet SAS
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Rieter Perfojet SAS
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Publication of EP1497488A2 publication Critical patent/EP1497488A2/de
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • 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
    • D04H1/48—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 in combination with at least one other method of consolidation
    • 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
    • D04H1/48—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 in combination with at least one other method of consolidation
    • D04H1/49—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 in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics

Definitions

  • the present invention relates to nonwovens and their methods and production machinery. More particularly, the invention relates to non woven fabrics comprising at least two plies of fibers or filaments which are interconnected by hydraulic connection by jets of water
  • This technique has several disadvantages. It requires the use metal needles requiring a lot of maintenance and leaving perforation marks in the nonwoven obtained. In addition, needles broken metal and it is not unusual to find pieces in nonwoven.
  • the invention overcomes these disadvantages.
  • the subject of the invention is a process for producing a nonwoven, in which which is passed a first ply of fibers or filaments on a mobile support, preferably on the generator of a rotating cylinder, and a second layer of fibers or filaments above the first layer between the support and a projection injector of at least one water jet in direction of support, towards the generator in the case of the cylinder, characterized in that the second web is passed over a plate interposed between the support and the injector and provided, next to the generator in the case of the cylinder, at least one solid part and at least one notch which opens out on the downstream side following the direction of passage of tablecloths.
  • the mobile support can be a conveyor but preferably it is a cylinder.
  • the first layer is held on the rotating cylinder which is especially microperforated and which preferably moves at the same speed tangential or linear than the first layer.
  • This porous support micro-perforated cylinder type or woven conveyor that supports the fibers and reflects the water jets in such a way as to create sufficient turbulence to that the fibers get entangled with each other without them escaping or move indefinitely in the direction of movement of the jets, you can to obtain a connection between the two layers in the parts corresponding to indentations. If there was no cylinder, the clean resistance of each a thin sheet would not allow the fibers to be moved and entangled.
  • the fibers and filaments are not constrained in their displacement and can well get entangled.
  • the process according to the invention can be applied to light nonwoven fabrics with a total grammage of at most 80 g / m 2 and a basis weight of less than 50 g / m 2 per web, although the method also applies to nonwovens with a grammage of up to 200 g / m 2 .
  • the method is also well suited to the production of nonwovens made of low-grade fibers whose title is at most equal to 1.7 dtex.
  • the pressure of the jets is preferably included between -30 and 400 bar.
  • the diameter of the jets is preferably between 75 and 200 microns.
  • the plate interposed between the cylinder and the injector maintains, in looks of its full parts, the two tablecloths at a distance from each other while the plies bind in the indentations forming bridges of link.
  • the remaining space between the two layers may, after or during entanglement operation by passage between the cylinder and the injector, to be filled with a material, especially yarn, foam, granulate, which is of particular interest for hygiene products where it can be incorporate absorbent materials.
  • the speed of the first layer is equal to the speed linear cylinder.
  • the second layer is also passed to the same speed than the first. These speeds are generally between 5 and 50 m / min.
  • hot melt fibers are the webs, and thermally bind the webs by melting the fibers thermofusibles, after the entanglement operation by passage between the cylinder and the injector.
  • These hot-melt fibers which are generally fibers so-called "bicomponents" polyester / polyethylene or polyester / copolyester. have not for the purpose of binding the layers that have already been previously bound by passage between the cylinder and the injector, but to freeze the resulting structure after said passage. For example, from 10 to 30% of fibers may be thermofusible, preferably distributed uniformly in the two layers.
  • the sheets to bind together are not subject when attached to a tensile stress, since they are simply moved and supported.
  • the properties of tablecloths are improved, and in particular properties in the sense machine are substantially the same as in the cross direction.
  • the invention also relates to a machine for producing a woven material comprising a rotating cylinder and an injector sending at least one jet of water towards a generator of the cylinder, characterized by a plate interposed between the cylinder and the injector and provided, next to the generator, at least one solid portion and at least one indentation through which the at least one water jet and which opens out on the downstream side in the direction of rotation of the cylinder.
  • the plate be fixedly mounted.
  • the plate has a thickness of between 0.5 and 15 mm on the one hand to be sufficiently resistant to the pressure of the jets of water, but on the other hand, to be thin enough so that the thickness added that the stream of water has to go does not result in a loss the effectiveness of the water jet.
  • the plate is, opposite the generator, at a distance from the cylinder between 1 and 10 mm, so that, on the one hand, the first sheet can pass on the cylinder under the plate without rubbing on it but also to decrease as much as possible the distance between the plate and the cylinder.
  • the plate is preferably, facing the generator, at a distance from the output of the injector between 2 and 40 mm.
  • the plate has the shape of a cylindrical arc of the same center as the cylinder and of radius just above that of the cylinder.
  • the arc may have an angle in the center from 5 to 20 °.
  • Each notch preferably has a dimension along the generator, so a width, between 1 and 50 mm.
  • the dimension of each solid part, along the generator is advantageously included between 2 and 500 mm.
  • the machine has several indentations of same dimension and several full parts of the same size. But the indentations on the one hand and solid parts on the other hand can also have different widths.
  • each solid part is oblong and its largest dimension extends perpendicular to the generator.
  • two plates can be superimposed on distance from each other between the cylinder and the injector and pass between two plates a third sheet which is based on the first plate, the second layer passing between the second plate and the injector. This allows to connect three layers together. We could also consider linking also a larger number of tablecloths in the same way.
  • the invention can be realized either continuously with sails or tablecloths directly from a machine type carde or spunbond which are then consolidated to varying degrees by water jets (or light calendering, or mechanical needling) in line and before the device which is the subject of this invention, or discontinuous unwinding reels previously more or less consolidated, or by combining uncoiled rolls with a online training for example when you want to put a layer of filaments continuous sandwich between two layers of short fibers.
  • the nonwoven by the process according to the invention After having formed the nonwoven by the process according to the invention on a machine according to the invention, it is dried for example by hot air, the drying possibly causing thermal bonding of the fibers hot melt to freeze the structure and make it resilient.
  • Tablecloths may be made of artificial, synthetic fibers or natural or continuous filaments of thermoplastics or non-thermoplastics. The fibers and filaments are used alone or in mixed.
  • the cylinder can be a rigid rotary perforated cylinder mounted outside a fixed cylindrical body and an inside diameter adjusted to the outside diameter of the cylindrical body so that the minimum game thus preserved allows the rotation while minimizing air leakage.
  • This rotary cylinder can be a single perforated plate, a cylinder made of bronze or stainless steel pierced with holes arranged in a helix, a honeycomb cylinder. It can also be a rolled perforated sheet metal tube covered with fabric drainage sleeve coarse metal which ensures a good uniformity of extraction of water.
  • This rotating cylinder can support a thinner perforated sleeve, which supports effectively the filaments and fibers of the nonwoven during entanglement hydraulic. The distribution of the holes in the sleeve can be random.
  • the Holes can also be organized by being aligned or staggered.
  • the sleeve holes can be evenly distributed in small areas of ordered perforations randomly distributed on the surface of the muff.
  • the sleeve may be made of a metallic fabric or material synthetic or in a mixture of metal fabric and synthetic material. We prefers that the diameter of the holes of the sleeve is between 50 and 500 ⁇ .
  • the sleeve preferably has a thickness of between 0.1 and 0.6 mm.
  • the inside of the cylinder communicates with an air extraction pipe and the water.
  • the invention finally relates to a nonwoven comprising at least two plies of fibers or filaments, bound only to parts longitudinal of them.
  • the nonwoven is free of mechanical needling perforations.
  • the nonwoven is also free binder, even in the case where hot melt fibers are used, since these are only intended to freeze the structure obtained after passage in the machine according to the invention, and not to obtain a connection between the tablecloths as evidenced by the fact that fused hot melt fibers are both in the parts of the sheets which are not connected and in those which are.
  • the nonwoven has longitudinal connecting portions, which are continuous extending over the entire length of the nonwoven, without interruption. When he of hot-melt fibers, these do not represent in the parts which are related less than 20% by weight and better less than 10% by weight.
  • This nonwoven has longitudinal longitudinal spaces between the longitudinal fiber bridges which are either left empty to give volume, or filled with wire, foam or granule.
  • the volume or lining is large and uniform. It is also possible to use air trapped in the spaces between the bridges to give the nonwoven a better insulating power.
  • the nonwovens may have a basis weight of less than 80 g / m 2, although it is also possible to produce nonwovens with a grammage of up to 200 g / m 2, for example. It is also possible to use low-titre fibers, for example of 1.7 dtex and less.
  • the nonwoven according to the invention preferably has a thickness of the bonded parts of between 0.3 and 3 and a thickness of the unbonded portions of between 0.5 and 15 mm.
  • the nonwoven can be used in the field of hygiene with example a filling of the free spaces between the tablecloths with products super absorbent or with microcapsules.
  • the nonwoven can also be used as insulation material. It can also be excellent filters when the gaps between the layers are filled with activated carbon.
  • the nonwoven can also be used as a household wiping cloth or professional. It is perfectly adapted to so-called electrostatic cloths for wiping dust.
  • the machine shown in FIG. 1 comprises a cylinder 1 of axis x horizontal nonwoven hydraulic binding machine. Above of the cylinder 1 is mounted on a frame, which is not shown, an injector 2 fixed which sends a row of jets 3 of water under pressure, each jet being vertical, and the row extending along the highest generatrix of the cylinder 1.
  • a plate 4 is fixedly mounted on the frame of the machine and is interposed between the cylinder 1 and the injector 2 being at a distance from one and the other.
  • a first web 5 unwinds from a reel 6 and goes into the interval between the cylinder 1 and the plate 4.
  • a second layer 7 unfolds from a coil 8 and passes after returning on a roll 9 return in the meantime between the plate 4 and the injector 2.
  • the cylinder 1 is rotated in the direction of the arrow F which symbolizes means of training in rotation.
  • the two layers 5 and 7 which are linked by the action of the row of jets 3 of water flow downstream of the cylinder 1 on a return roller 10.
  • FIG. 2 two plates 11, 12 are provided in the interval between the cylinder 1 the injector 2, and in addition to the plies 5 and 7, there is provided a tablecloth 13 unwound from a spool 14 which passes on a roll 16 before returning to go between the two plates 11 and 12 while being in contact with the face upper plate 12.
  • the three layers are linked to the exit of the cylinder 1 and pass together on the roll 10.
  • FIG. 3 represents one of the plates 4, 11 or 12. It is a steel plate having the shape of a five-tooth comb 17 from a soul 18 and having four notches through 19 through.
  • the comb is mounted in the machines of Figures 1 and 2, so that the notches 19 open to the outside of the downstream side in the direction F of rotation of the cylinder 1.
  • the notches are rectangular. Their big side is parallel to the direction of passage of the sheets 5, 7 13. Their short side is perpendicular to this direction and therefore parallel to the generatrix of the cylinder along which is arranged row of jets 3.
  • the comb comprises a core 20 of which are five teeth 21 which define indentations 22 in the form of a pointed triangle pointing towards the soul 20.
  • the open side of the triangles is directed to the downstream side of the cylinder 1.
  • the teeth 23 of the comb are rectangular and have the same dimension but are at different distances from each other so it is created between them indentations 24, 25 of different widths, such as that counted according to the generatrix of the cylinder 1, that is to say parallel to the largest dimension of the soul of the comb.
  • the comb has five teeth 26 separated from each other by indentations with rounded bottom 27.
  • the teeth 28, 29 are rectangular but have widths different, as the notches 30,31 have different widths.
  • the upper face of the comb is not flat, at the difference of the combs of Figures 3 to 7, but is corrugated according to a frame corresponding to the distance between the teeth 32 whose upper faces are semicylindrical.
  • the comb has a top face 33 and a face 34 lower curved.
  • the radius of the face 34 is just greater than the radius of the cylinder 1.
  • FIG. 10 recognizes the injector 2, the first layer 5 and the second layer 7 separated by teeth 17 of the comb and the surface of the cylinder 1.
  • the injector sends a row of 3 jets into the indentations. There is several jets in each indentation.
  • Nonwovens are thus obtained, as shown in FIG. comprise the first ply 5 and the second ply 7 having bridges 35 longitudinally continuous entanglement of the fiber. It is defined between webs 5 and 7 and their bridge 35 continuous free spaces 36 longitudinally.
  • Figure 11 corresponds to the case where the thickness of the plate 4 is relatively large and the width of the notch 19 is relatively big. In contrast, in FIG. 12, the thickness of the plate 4 has been chosen smaller and the width of the notch 19 was narrower. We symbolized by a line 36 and lines 37 the presence of hot melt fibers. In addition, one of the spaces was filled with microcapsules.
  • a carded tablecloth of 35g / m2 composed of a mixture of 70% viscose 1.7 dtex / 40 mm and 30% polyester 1.7 dtex / 38 mm is consolidated by hydraulic entanglement on a JETLACE 3000 installation sold by the company Rieter Perfojet at a pressure of 50 bar and a speed of 40m / min. It is produced two identical rolls of this viscose / polyester blend. Both rolls are placed on a machine according to the invention in which the indented plate has a thickness of 2 mm and has notches 6 mm wide separated by solid parts 4 mm wide.
  • the two tablecloths are assembled by hydraulic entanglement at a speed of 15m / min according to the invention by an injector delivering jets of 120 microns in diameter at a pressure of 100 bars.
  • the jets are arranged in groups of 7 jets in front of each notch, each group having a width of 3.7 mm and the center distance between group to group is 10 mm.
  • the jets are arranged in staggered in two rows.
  • a nonwoven structure is thus obtained having a large volume, a thickness of 2.5 mm, with a succession of inter-zone zones of the two layers and zones voluminous without interliaison layers forming cavities.
  • the hanging or binding of the two layers is excellent and they can not not be separated from each other without destroying the nonwoven.
  • a carded tablecloth of 60 g / m2 composed of 100% polyester fiber 1.7 dtex / 38 mm is consolidated by hydraulic entanglement on a installation JETLACE 3000 marketed by the company Rieter Perfojet to a pressure of 60 bar and a speed of 25m / min.
  • Another tablecloth of 50 g / m 2 of continuous filament polypropylene of 1.8 dtex is formed on a PERFOBOND 3000 installation of the company Rieter Perfojet then consolidated by hydraulic entanglement on a JETLACE 3000 installation sold by Rieter Perfojet at a pressure of 100 bar and a speed of 25m / min.
  • Both rolls are placed on a machine according to the invention in which the indented plate has a thickness of 2 mm and has notches of 4 mm width separated by solid parts 4 mm wide.
  • the consolidated layer of filaments continuous is placed below the indented plate that is to say between the latter and the rotating cylinder, while the consolidated layer of polyester is placed over the indented plate between it and the injector delivering the jets of water.
  • the two tablecloths are assembled by hydraulic entanglement at a speed of 25 m / minute by an injector delivering the jets 120 microns in diameter at a pressure of 150 bar.
  • the jets are arranged in groups of 5 jets in front of each indentation, each group having a width of 2.6 mm, the inter-axis between the groups of jets being 8 mm. In each group the jets are staggered in two rows.
  • a voluminous nonwoven structure is obtained and presenting a succession of large areas imprisoning a large quantity of air and separated by connecting zones between the layers.
  • the plies do not separate, the resistance to delamination is excellent, the nonwoven has a thickness of 3 mm in the unbound parts.
  • a carded tablecloth of 35g / m2 made of 80% polyester fibers of 1.7 dtex / 38 mm and 20% Celbond bicomponent fibers from the company Kosa de 3.3 dtex and length 38 mm is consolidated by entanglement on a JETLACE 3000 installation marketed by the company Rieter Perfojet at a pressure of 40 bar and a speed of 30 m / min.
  • a another cardboard tablecloth of 40g / m2 composed of 100% polyester fibers of 1,7 dtex / 38 mm is consolidated by hydraulic entanglement on a installation JETLACE 3000 marketed by the company Rieter Perfojet to a pressure of 50 bar and a speed of 30m / min.
  • the two tablecloths are placed on a machine according to the invention in which the plate notched to a thickness of 2 mm and has notches of 6 mm width separated by solid parts 4 mm wide.
  • the tablecloth consolidated 100% polyester is placed under the indented plate, that is to say between it and the rotating cylinder, while the consolidated sheet composed of polyester blend and fiber component is placed above the plate indented between it and the injector delivering the jets of water.
  • the two plies are assembled by hydraulic entanglement to a speed of 25 m / min by an injector delivering jets of 120 microns diameter at a pressure of 100 bar.
  • the jets are arranged in groups 7 jets in front of each indentation, each group having a width of 3.7 mm, the center distance between groups of jets being 10 mm.
  • the sheet After the treatment of the two sheets by hydraulic entanglement, the sheet is dried at a temperature of 125 to 130 ° C in an oven which has the effect to melt the polyethylene part of the bicomponent fibers.
  • a carded tablecloth of 30 g / m2 composed of 100% polyester 1.7 dtex / 38 mm is consolidated by hydraulic entanglement on an installation JETLACE 3000 marketed by the company Rieter Perfojet at a pressure 40 bar and at a speed of 30m / min. It is prepared two rolls of this polyester web consolidated by hydraulic entanglement.
  • Another sheet of 30 g / m 2 continuous polypropylene filament of 1.8 dtex is formed on a PERFOBOND 3000 installation of the company Rieter Perfojet then consolidated by hydraulic entanglement on an installation JETLACE 3000 marketed by the company Rieter Perfojet at a pressure 70 bar and at a speed of 30m / min.
  • the three rolls are placed on a machine according to the invention which comprises two indented plates superimposed so that the indentations are aligned vertically, that is to say in the axis of the jets.
  • the plates are distant one on the other 2 mm.
  • the indented plates have a thickness of 1.0 mm and have notches 6 mm wide separated by parts full of 4 mm width.
  • the polyester tablecloths are placed respectively for one below the bottom plate against the cylinder and for the other above the top plate next to the injector.
  • the sheet of continuous polypropylene filaments is itself unrolled between the two plates.
  • the three tablecloths are assembled by hydraulic entanglement at a speed of 10 m / min according to the invention by an injector delivering jets of 120 microns in diameter at a pressure of 125 bars.
  • the jets are arranged in groups of 7 jets in front of each notch, each group having a width of 3.7 mm and the center distance between group to group is 10 mm.
  • the jets are arranged in staggered in two rows. This gives a nonwoven structure in three layers with a large volume and a maximum thickness of 5 mm, with a succession of interlink zones of the two layers and voluminous areas without interliaison of the layers forming cavities.
  • the hooking or binding of the three layers is excellent and they can not not be separated from each other without destroying the nonwoven.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Claims (21)

  1. Verfahren zum Herstellen eines Vlieses, bei dem man eine erste Bahn aus Fasern oder aus Fäden auf einem beweglichen Träger, vorzugsweise auf der Mantellinie eines Drehzylinders, und eine zweite Bahn aus Fasern oder Fäden über der ersten Bahn zwischen dem Träger und einer Düse zum Spritzen mindestens eines Wasserstrahls in Richtung des Trägers, im Fall des Drehzylinders vorzugsweise in Richtung der Mantellinie, laufen lässt, dadurch gekennzeichnet, dass man die zweite Bahn auf einer Platte laufen lässt, die zwischen dem Träger und der Düse eingefügt ist, und die, in dem Fall des Drehzylinders gegenüber der Mantellinie, mit mindestens einem massiven Teil und mindestens einer Ausnehmung versehen ist, durch welche mindestens ein Strahl läuft, und die nach außen auf der stromabwärtigen Seite in Richtung des Durchlaufens der Bahnen mündet.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Geschwindigkeit der ersten Bahn gleich der linearen Geschwindigkeit des Drehzylinders ist.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass man wärmeschmelzbare Fasern in die Bahnen gibt, die man thermisch verbindet, indem man die wärmeschmelzenden Fasern nach dem Vorgang des Verwirrens durch Passage zwischen dem Drehzylinder und der Düse schmelzen lässt.
  4. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass man mindestens einen Raum, der zwischen den zwei Bahnen verbleibt, nach oder während des Vorgangs des Verwirrens durch Passage zwischen dem Drehzylinder und der Düse mit einem Material auslegt.
  5. Maschine zum Erzeugen eines Vlieses, umfassend einen Drehzylinder (1) und eine Düse (2), die mindestens einen Wasserstrahl (3) in Richtung einer Mantellinie des Drehzylinders (1) spritzt, gekennzeichnet durch eine Platte (4), die zwischen dem Drehzylinder (1) und der Düse (2) eingefügt ist und die gegenüber der Mantellinie mit mindestens einem massiven Teil und mindestens einer Ausnehmung versehen ist, durch welche mindestens ein Wasserstrahl (3) läuft, und die nach außen auf der stromabwärtigen Seite in Richtung der Drehung des Drehzylinders (1) mündet.
  6. Maschine nach Anspruch 5, dadurch gekennzeichnet, dass die Platte (4) stationär montiert ist.
  7. Maschine nach Anspruch 5 und 6, dadurch gekennzeichnet, dass die Ausnehmung nach außen mit einer Mündungsbreite mündet, die, gemessen entlang der Mantellinie, gleich der größten Breite der Ausnehmung ist.
  8. Maschine nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Platte (4) eine Stärke zwischen 0,5 und 15 mm hat.
  9. Maschine nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Platte (4) gegenüber der Mantellinie in einer Entfernung zwischen 1 und 10 mm vom Drehzylinder liegt.
  10. Maschine nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass sich die Platte (4) gegenüber der Mantellinie in einer Entfernung zwischen 2 und 40 mm von dem Ausgang der Düse (2) befindet.
  11. Maschine nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass die Platte die Form eines zylindrischen Bogens hat mit der gleichen Mitte wie der Drehzylinder und mit einem Radius etwas größer als der des Drehzylinders.
  12. Maschine nach einem der Ansprüche 5 bis 11, dadurch gekennzeichnet, dass das Maß mindestens einer Ausnehmung entlang der Mantellinie zwischen 1 und 50 mm liegt.
  13. Maschine nach einem der Ansprüche 5 bis 12, dadurch gekennzeichnet, dass das Maß mindestens eines massiven Teils entlang der Mantellinie zwischen 2 und 500 mm liegt.
  14. Maschine nach einem der Ansprüche 5 bis 13, gekennzeichnet durch mehrere Ausnehmungen vorzugsweise mit gleichem Maß.
  15. Maschine nach einem der Ansprüche 5 bis 14, gekennzeichnet durch mehrere massive Teile vorzugsweise mit gleichem Maß.
  16. Maschine nach einem der Ansprüche 5 bis 15, dadurch gekennzeichnet, dass mindestens ein massiver Teil länglich ist und dass sich sein größtes Maß senkrecht zu der Mantellinie erstreckt.
  17. Vlies umfassend mindestens zwei Bahnen aus Fasern oder Fäden, die weniger als 30 Gew.-% wärmeschmelzbare Fasern umfassen, die untereinander durch Wasserstrahl auf längslaufenden, durchgehenden Teilen verbunden sind, gekennzeichnet durch durchgehende Bahnen ohne Perforierung durch mechanische Nadelung und ein Flächengewicht des Vlieses von maximal 80 g/m2, wobei die Fasern oder Fäden einen Titer von maximal 1,7 dTex haben.
  18. Vlies nach Anspruch 17, gekennzeichnet durch ein hinzugefügtes Material, das zwischen die zwei Bahnen in den Teilen der Bahnen, die nicht verbunden sind, eingefügt ist.
  19. Vlies nach einem der Ansprüche 17 oder 18, dadurch gekennzeichnet, dass es wärmeschmelzende Fasern umfasst, die sowohl in den Teilen der Bahnen, die nicht verbunden sind, als auch in denen, die verbunden sind, geschmolzen sind.
  20. Vlies nach einem der Ansprüche 17 bis 19, dadurch gekennzeichnet, dass die Eigenschaften der Bahnen in der Maschinenlaufrichtung und in der Querrichtung gleich sind.
  21. Vlies nach einem der Ansprüche 17 bis 20, gekennzeichnet durch eine Stärke der verbundenen Teile von 0,3 bis 3 mm und der nicht verbundenen Teile von 0,15 bis 15 mm.
EP03746316A 2002-04-12 2003-04-01 Vliesstoff mit teilweise verbundenen schichten sowie verfahren und vorrichtung zu dessen herstellung Expired - Lifetime EP1497488B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0204603 2002-04-12
FR0204603A FR2838458B1 (fr) 2002-04-12 2002-04-12 Non tisse a nappes partiellement liees et ses procedes et machine de production
PCT/FR2003/001006 WO2003087453A2 (fr) 2002-04-12 2003-04-01 Non tisse a nappes partiellement liees et ses procede et machine de production.

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EP1497488A2 EP1497488A2 (de) 2005-01-19
EP1497488B1 true EP1497488B1 (de) 2005-12-07

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EP (1) EP1497488B1 (de)
AT (1) ATE312220T1 (de)
AU (1) AU2003249137A1 (de)
DE (1) DE60302661T2 (de)
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WO (1) WO2003087453A2 (de)

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Publication number Priority date Publication date Assignee Title
US4177312A (en) * 1978-05-08 1979-12-04 Akzona Inc. Matting article
FR2678547B1 (fr) * 1991-07-03 1995-03-10 Guy Leroy Procede et dispositif pour la realisation de nappes composites et composites obtenus.
JP3403589B2 (ja) * 1996-10-09 2003-05-06 大和紡績株式会社 嵩高性不織布及びその製造方法
JP4320078B2 (ja) * 1999-02-15 2009-08-26 大和紡績株式会社 嵩高性不織布、その製造方法およびこれを用いた清拭材
US20020039867A1 (en) * 1999-12-21 2002-04-04 The Procter & Gamble Company Substance encapsulating laminate web

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FR2838458A1 (fr) 2003-10-17
WO2003087453A3 (fr) 2004-04-08
DE60302661T2 (de) 2006-06-22
DE60302661D1 (de) 2006-01-12
AU2003249137A8 (en) 2003-10-27
ATE312220T1 (de) 2005-12-15
EP1497488A2 (de) 2005-01-19
WO2003087453A2 (fr) 2003-10-23
FR2838458B1 (fr) 2004-08-27
AU2003249137A1 (en) 2003-10-27

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