EP1885927B1 - Trommel für eine maschine zur herstellung von einem gemusterten vliesstoff sowie damit hergestellter vliesstoff - Google Patents

Trommel für eine maschine zur herstellung von einem gemusterten vliesstoff sowie damit hergestellter vliesstoff Download PDF

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Publication number
EP1885927B1
EP1885927B1 EP20060755513 EP06755513A EP1885927B1 EP 1885927 B1 EP1885927 B1 EP 1885927B1 EP 20060755513 EP20060755513 EP 20060755513 EP 06755513 A EP06755513 A EP 06755513A EP 1885927 B1 EP1885927 B1 EP 1885927B1
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EP
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Prior art keywords
drum
perforations
nonwoven
previous
cylinder
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EP20060755513
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English (en)
French (fr)
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EP1885927B2 (de
EP1885927A2 (de
Inventor
Ludovic Leroy
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Andritz Perfojet SAS
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Andritz Perfojet SAS
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/02—Tubes; Rings; Hollow bodies
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/08—Perforated or foraminous objects, e.g. sieves
    • 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
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • 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
    • D04H3/013—Regenerated cellulose series
    • 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
    • D04H3/015—Natural yarns or filaments
    • 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
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition

Definitions

  • the present invention relates to machines for producing patterned nonwoven textile products and nonwovens produced by such machines.
  • WO 03/008691 a relief marking roll of a nonwoven is described.
  • the device used is such that it is impossible to create closed contours without using metal bridges linking the inside to the outside of the contour. It necessarily follows patterns delimited by discontinuous features.
  • the invention proposes, on the other hand, to obtain on a nonwoven a pattern delimited by a continuous contour.
  • FIG. 13 and 14 describe a drum useful for this purpose. It is pierced with craters with conical mouth which is explained that the angle 111 of the cone must be such that it does not follow that the outer surface of the side wall is flat and smooth. Figures 14 show that the opening rate of the outer surface of the side wall is very large.
  • EP 0 776 391 a random microperforated roll is described.
  • EP 1327712 , EP 0215684 and WO2006 / 051191 describe drums for entanglement machine by water jets
  • the invention overcomes these disadvantages while solving a different problem. It makes it possible to obtain a non-woven having little hairiness both in the projecting parts and in the recessed parts delimiting the pattern, which may be of continuous contours and have a dimension greater than 2 mm. It is thus possible to create patterns delimited by a line drawn deliberately, but also patterns that are not delimited by a line drawn by a furrow or a rib, but which are in the form of a "monoblock", entirely in protrusion or all hollowed out delimiting itself.
  • the drum of the invention has an open surface (small opening ratio). This characteristic makes the product of the invention has a low hairiness.
  • the drum makes it possible to generate bonding at the same time as marking.
  • the ends of free fibers (pilosity) are limited in number because they are integrated in the fibrous mass (fibers bonded together).
  • Existing marking technologies have a large, open, non-binding surface, which increases pilosity during marking.
  • the drum is preferably made of nickel, but it can also be another metal or alloy, and especially copper.
  • the numbers of the perforations, both in the at least one first zone and in the at least one second zone, are preferably between 80 and 130 cm 2 .
  • the formation of patterns can be done effectively only by precise management of the water flow from its emission to its suction through the patterning drum. This particularly important water flow management in the case of wetlaid products where the fibers are very short and therefore more mobile is controlled through the distribution and the size of the perforations.
  • these perforations In order to obtain a good marking without creating a perforation in the nonwoven, these perforations have a dimension between 0.1 and 1, 2 mm and the density of these perforations must be between 40 and 200 / cm 2 .
  • the drainage flow rate is locally insufficient, which can cause perforations caused by excessive displacement of the fibers.
  • the open surface is too large to retain the fibers that will be entrained and sucked with the water, thus creating uncontrolled perforations in the non-woven.
  • the through perforations have a dimension of preferably between 0.3 and 0.8 mm.
  • the size of a perforation is the diameter of the circle circumscribing a perforation.
  • the perforation may have any shape and in particular circular, rectangular, elliptical.
  • the perforations are preferably randomly distributed to the side surface of the cylinder.
  • the surface of each perforation may be between 0.008 and 1.5 mm 2 .
  • the opening ratio is 3 to 60%, and preferably 5 to 15%, this percentage representing the perforated area relative to the total lateral surface of the roll.
  • the perforations are cylindrical having preferably a circular cross section, although they may also have a square section or the like.
  • the area taken by a perforation on the outer lateral surface of the cylinder is thus equal to the area taken by this perforation on the inner lateral surface of the cylinder.
  • the first layer has a thickness of between 0.3 and 2 mm and the second layer has a thickness between 0.3 and 2 mm.
  • the smallest imaginary inscribed circle traced on the outside face of the lateral surface of the cylinder, both in the at least one first zone and in the at least one second zone, has a diameter greater than 0.5 mm, preferably greater than 2 mm.
  • a first zone is in the form of a hammer, it means that the smallest circle inscribed is that which corresponds to the handle of the hammer and not to a circle inscribed in the head of the hammer.
  • the variation in height of the outer surface of a zone and, preferably, of all the zones of the lateral wall is less than 0.05 and better still 0.01 mm. This is in direct contradiction with the teaching of EP 0 705 932B . This makes it possible to obtain a less aggressive surface with respect to the fibers favoring hydrolysis, which gives the nonwoven a more regular appearance.
  • a level is defined by the points at the same radial distance from the drum axis. All the points of the same level are on the lateral face of the same cylinder of a given diameter. The heights of the outer surface of a zone are defined in the same way.
  • the height variation is measured according to ISO 4287 where it is indicated by the notation zt.
  • the probe instrument of the Federal Office of Metrology METAS is used.
  • the measuring instrument is a probe instrument with a precise reference translation unit.
  • the movement of the probe arm is measured interferometrically.
  • the vertical resolution is 10 nm at each measurement point.
  • the resolution of the horizontal displacement is 0.25 ⁇ m.
  • the measuring range for profile evaluation is 120 mm (horizontal) and 6 mm (vertical).
  • the diamond tip of the probe usually has a radius of 2 ⁇ m at its end and an angle at the apex of 90 °.
  • the probe instrument is directly attached to the base meter unit by means of a reference standard.
  • the drum according to the invention makes it possible to reduce the frequency of cleaning by limiting the stitching of the short fibers onto the surface of the cylinder, particularly in the case of use on wetlaid products, which is very sensitive to this phenomenon and to reduce the loss of fibers. short when used, especially on wetlaid products.
  • the invention also aims, independently, a perforated metal cylinder for the production of patterned nonwoven textile products, characterized in that it consists of at least two layers of which a first layer corresponds to a first level constituting at least a first perforated side wall zone of through perforations delimited by first solid parts, and at least a second layer of which corresponds to a second level constituting at least a second perforated side wall zone of through perforations delimited by second parts full.
  • the perforated marking drum can be manufactured in two stages.
  • a first step an electrolytic deposition of nickel or another metal on a conductive matrix is performed by the screen printing technique.
  • a photographic film representing the pattern of the bottom perforations is made.
  • This film is then placed on a matrix having exactly the inner diameter of the perforated cylinder.
  • This matrix is previously coated with a photosensitive layer. After exposure to light radiation, the matrix is rinsed. Only coated areas not exposed to radiation remain on the matrix. This is then immersed in an electrolysis bath. Nickel or other metal is deposited on areas not coated with a photosensitive layer. After about eight hours, the deposit has reached its optimum thickness.
  • the cylinder is demolded.
  • the cylinder is coated, again, with a photosensitive layer.
  • a new film representing the marking pattern is placed on the cylinder. Then, it is exposed to light radiation. The cylinder is rinsed. Only areas not exposed to the radiation of the coated layer remain on the cylinder. It is immersed in an electrolysis bath. The nickel or other metal is deposited on the cylinder previously produced on the areas not covered with a photosensitive layer. Nickel or other metal does not fill the perforations of the lower cylinder. The perforations therefore extend to the new deposit of nickel or other metal. After about ten hours, the new deposit has reached its optimum thickness. The cylinder is then removed from the bath and freed of photosensitive layer residues.
  • the subject of the invention is also a machine for manufacturing a patterned nonwoven comprising an injector of water jets on the outer face of the lateral surface of a cylinder according to the invention and means for passing an web without patterns between the cylinder and the injector. At the outlet of the cylinder, the nonwoven web is provided with a conjugate pattern of the cylinder pattern.
  • the nonwovens may be made of natural or artificial or synthetic fibers.
  • the nonwovens are generally obtained by the carding or aerodynamic technique, they can also consist of continuous thermoplastic filaments obtained by the so-called spunbond technique, or even meltblowns.
  • the nonwovens can also be obtained by the so-called wet technique, they can also be obtained by the combination of several processes such as, for example, spunbond plus carded veils, spunbond plus natures deposited aerodynamically by airlaid and linked by jets. of water. Good results have been obtained with nonwovens of 30 to 150 g / m 2 based on viscose, viscose / polyester and cotton blends. But this list is not exhaustive.
  • the thicknesses of the nonwovens, including the protruding patterns, are generally between 0.5 mm and 2.5 mm and the elevation of the protruding parts is preferably between 0.3 and 2.0 mm, preferably between 0.5 and 1.5 mm.
  • the thickness of the elevation is measured in the following manner: the thickness is measured by placing the nonwoven in a non-woven thickness measuring apparatus, as recommended by the EDANA ERT 30.5-99 standard. The elevation is measured with a magnifying glass of magnification eight times and micrometric scale. A magnifying glass with a magnification of eight times is also used to determine the distance from which the free ends of the filiform filaments project and their number.
  • the non-wovens may be subjected to a first bonding treatment on a conventional machine for bonding the nonwovens by water jets and immediately after the continuous transfer to the machine that is the subject of the present invention.
  • a first bonding treatment on a conventional machine for bonding the nonwovens by water jets and immediately after the continuous transfer to the machine that is the subject of the present invention.
  • the water jets may have a diameter of between 80 and 170 microns and preferably between 100 and 140 microns.
  • the number of jets per meter is between 1000 and 5000 and preferably between 1500 and 4000.
  • the pressure of the water in the injectors is between 10 and 400 bar and preferably between 80 and 250 bar.
  • a vacuum in the cylinder of between -20 mbar and -200 mbar is maintained and the drum is driven by usual rotary drive means at a speed of between 1 and 400 meters per minute.
  • the invention finally relates to a nonwoven which comprises entangled filiform elements, in which is embossed a pattern, characterized in that the free ends of the filiform elements are projecting from the face of the nonwoven having the pattern on a length less than 0.5 mm and the number of these projecting ends is less than 5/5 mm 2 .
  • the hairiness of the nonwoven, marked with the new drum, is lower than in the case of the prior art. This is explained by the fact that the new drum has a bonding surface promoting integration of the ends of fibers in the fibrous mass.
  • the nonwoven according to the invention can be given without difficulty a pattern with continuous contours on one face.
  • the dimension of the pattern according to the face as defined by the smallest imaginary inscribed circle, may be greater than 2 mm and the pattern may have a uniform depth of 0.3 to 2 mm, preferably 0.5 to 1, 5 mm.
  • This possibility of having a dimension of the pattern according to the face, therefore a radius of the pattern if it is circular or a length of the pattern if it is rectangular, greater than 2 mm makes it possible to obtain not only patterns delimited by lines. but also a pattern that is not delimited by lines, the pattern being formed by the same unevenness printed on the nonwoven and not only by lines of contours printed on the nonwoven.
  • the nonwoven according to the invention can be used in particular as a cosmetic wipe, wipe or baby wipe.
  • a preferred nonwoven according to the invention comprises from 10 to 100% by weight of cellulosic fibers or thermoplastic polymer filaments and preferably from a mixture of both the 100% mixture.
  • the installation represented at Fig. 1 comprises a system 1 for forming a web 5 of non-woven unbonded material which leaves the installation 1 via a conveyor 2 and passes on a conveyor 3 between the latter and a drum 4 formed according to the 'invention. Opposite the path followed by the web V on the drum 4 are arranged two injectors 5 jets of water under pressure. The veil V continues its course by passing on a second drum 6 according to the invention provided with injectors 7 before continuing its journey to a dryer 8 and a winder 9.
  • the Fig. 2 represents the part of the installation represented in Fig. 1 essentially comprising the drum 4.
  • the drum 4 is threaded onto a cylindrical, stationary, suction box 10, provided with three suction slots 11 opposite the injectors 5.
  • the drum 4 itself comprises zones 12 projecting and zones 13 recessed on the outer face of its side surface.
  • the zones 12 projecting are at a higher level to the recessed areas 13, as considered in a radial direction of the drum.
  • the drum is made of nickel. It has on one of the front edges a drive belt in rotation of the drum with the aid of a motor.
  • the interior of the suction box 10 is connected to a suction pump.
  • Fig. 3 the constitution of the drum.
  • the drum is perforated with perforations 14 both in the hollow zone 13 and in the projecting zone 12.
  • the angle ⁇ between the outer lateral face of the side wall of the drum and the passage wall of a high level zone 12 to a low level zone 13 is less than or equal to 96 °, in being greater than 90 °.
  • the Fig. 5 and 6 illustrate the creation of a protruding feature on the nonwoven at the Fig. 5 and 16 hollow on the nonwoven at the Fig. 6 .
  • the Fig. 7 illustrates the formation of a pattern of large size on the nonwoven which is not delimited by lines having two substantially radial walls 17 and 18, as shown in FIGS. Fig. 5 and 6 but by a single wall 19 of contour.
  • a compound tablecloth ( Fig. 2 ) of 50% viscose fibers and 50% PET fibers of 55 g / m 2 , pre-wetted by means of the injector 5 generating a curtain of water jets 140 ⁇ m in diameter spaced 0.45 mm at the pressure of 15 bar and compacted between the web of the porous conveyor 2 and the microperforated marker drum 4, advance at a speed of 50 meters per minute.
  • This sheet is transferred directly to the marking drum without pre-seasoning.
  • the drum has circular microperforations 0.3 mm in diameter and has 100 microperforations per cm 2 .
  • the drum marking has a microperforated surface, as explained earlier, and in relief. The distance between the high level and the low level of the surface of the drum is 1 mm.
  • the ratio of the high level area to the low level area is 20%, so that the pattern is composed of patterns in relief on the drum, thus in the hollow, on the product after treatment with the injectors 5 and 5 'generating curtains of jet jets.
  • water 120 ⁇ m in diameter and spaced 0.6 mm, respectively, at the pressure of 50 and 100 bar.
  • a nonwoven is obtained having an intaglio pattern on 20% of its surface and a hairiness of 4 filiform elements per 5 mm 2 with a projection length of 0.5 mm 2 .
  • a ply of 60 g / m 2 consisting of a mixture of 1.7 dtex fibers 40 mm long polypropylene / viscose 60/40 advancing at 120 m / min is prewired and compacted in a manner similar to Example 1 and transferred to a microperforated connecting drum known from the prior art. On this drum the web is connected by two injectors, then transferred to the marking drum, undergoing a treatment similar to that described in Example 1.
  • the marking drum has a microperforated surface and in relief. The distance between the high level and the low level of the surface of the drum is 1.5 mm. The ratio of the high level surface to the low level area is 85%, so the pattern produced is composed of recessed patterns on the drum, thus in relief on the product.
  • a nonwoven is obtained having a pattern in relief on 15% of its surface having a hairiness of 3 filiform elements per 5mm 2 projecting length of 0.4mm. This pattern is composed of projecting squares of 1 cm side.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Woven Fabrics (AREA)

Claims (19)

  1. Metallische Trommel, die auf ihrer Außenfläche auf einem ersten Niveau wenigstens eine erste Seitenwandzone (12) besitzt, die mit durchgehenden Perforationen (14) perforiert ist, die durch erste Vollteile begrenzt sind, und auf einem zweiten Niveau, das von dem ersten Niveau verschieden ist, wenigstens eine zweite Seitenwandzone (13) besitzt, die mit durchgehenden Perforationen (14) perforiert ist, die durch zweite Vollteile begrenzt sind, dadurch gekennzeichnet, dass
    - die Abmessung der Perforationen im Bereich von 0,1 bis 1,2 mm liegt,
    - die Anzahl von Perforationen sowohl in der wenigstens einen ersten Zone als auch in der wenigstens einen zweiten Zone im Bereich von 40 bis 200 pro Quadratzentimeter liegt und
    - der Anteil der Öffnungen im Bereich von 3 bis 60 % und vorzugsweise im Bereich von 5 bis 15 % liegt.
  2. Einteilige perforierte metallische Trommel, die für die Herstellung gemusterter Vlies-Textilprodukte bestimmt ist, dadurch gekennzeichnet, dass sie aus wenigstens zwei Schichten gebildet ist, wovon eine erste Schicht einem ersten Niveau entspricht, das wenigstens eine erste Seitenwandzone (12) bildet, die mit durchgehenden Perforationen (14) perforiert ist, die durch erste Vollteile begrenzt sind, und wovon wenigstens eine zweite Schicht einem zweiten Niveau entspricht, das wenigstens eine zweite Seitenwandzone (13) bildet, die mit durchgehenden Perforationen (14) perforiert ist, die durch zweite Vollteile begrenzt sind.
  3. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Abmessung der Perforationen im Bereich von 0,1 bis 1,2 mm liegt.
  4. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Anzahl der Perforationen sowohl in der wenigstens einen ersten Zone als auch in der wenigstens einen zweiten Zone im Bereich von 40 bis 200 pro Quadratmeter liegt.
  5. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Anteil der Öffnungen im Bereich von 3 bis 60 % und vorzugsweise im Bereich von 5 bis 15 % liegt.
  6. Trommel nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Höhenvariation der äußeren Oberfläche aller Zonen, die kleiner als 0,05 mm und vorzugsweise kleiner als 0,01 mm ist.
  7. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie aus Nickel ist.
  8. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Seitenwand einteilig ist.
  9. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Schicht eine Dicke im Bereich von 0,3 bis 2 mm hat und die zweite Schicht eine Dicke im Bereich von 0,3 bis 2 mm hat.
  10. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mehrere erste Zonen besitzt, die sich alle auf demselben Niveau befinden.
  11. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mehrere zweite Zonen besitzt, die sich alle auf demselben zweiten Niveau befinden.
  12. Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der kleinste imaginäre einbeschriebene Kreis längs der äußeren Oberfläche der Seitenwand einer Zone einen Durchmesser besitzt, der größer als 0,5 mm und vorzugsweise größer als 2 mm ist.
  13. Maschine für die Fertigung eines gemusterten Vlieses, die eine Einrichtung (5) zum Spritzen von Wasserstrahlen auf die äußere Fläche der seitlichen Oberfläche einer Trommel und Mittel zum Bewegen eines musterlosen Tuchs (V) zwischen die Trommel vor der Einspritzeinrichtung (5) umfasst, dadurch gekennzeichnet, dass die Trommel wie in einem der vorhergehenden Ansprüche angegeben beschaffen ist.
  14. Vlies, das verknäulte fadenförmige Elemente enthält, in denen ein Muster ausgebildet ist, dadurch gekennzeichnet, dass die freien Enden der fadenförmigen Elemente von der Vliesfläche, die das Muster besitzt, auf einer Länge kleiner als 0,5 mm vorstehen und dass die Anzahl dieser vorstehenden Enden kleiner als 5/5 mm2 ist.
  15. Vlies, das auf einer Fläche ein Muster mit ununterbrochenem Umriss besitzt, nach Anspruch 14, gekennzeichnet durch eine Abmessung des Musters längs der Fläche, das durch den kleinsten imaginären einbeschriebenen Kreis größer als 2 mm definiert ist, gekennzeichnet durch eine gleichmäßige Tiefe des Musters im Bereich von 0,3 bis 2 mm, vorzugsweise von 0,5 bis 1,5 mm.
  16. Vlies nach einem der Ansprüche 14 oder 15, das 10 bis 100 % Zellulosefasern enthält.
  17. Vlies nach einem der Ansprüche 14 bis 16, das 10 bis 100 % ununterbrochene Filamente eines thermoplastischen Polymers, die ein Muster aufweisen, enthält.
  18. Vlies nach einem der Ansprüche 14 bis 17 in Form eines Säuglingstuchs, eines Kosmetiktuchs oder eines Wischtuchs.
  19. Verfahren für die Herstellung einer Trommel nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass:
    - ein photographischer Film, der das Muster der Perforationen repräsentiert, hergestellt wird,
    - der Film auf eine Matrize gelegt wird, die den Innendurchmesser der Trommel besitzt in bestimmten Bereichen mit eine photoempfindlichen Schicht beschichtet ist,
    - die Matrize mit Lichtstrahlung belichtet wird, derart, dass nur die nicht mit der Strahlung belichteten beschichteten Teile auf der Matrize zurückbleiben,
    - anschließend durch Elektrolyse auf die nicht beschichteten Teile Metall abgelagert wird, wodurch ein unterer Zylinder mit Perforationen erhalten wird,
    - der untere Zylinder von der Form abgenommen wird,
    - der untere Zylinder in bestimmten Zonen mit einer photoempfindlichen Schicht beschichtet wird,
    - ein weiterer Film, der das Markierungsmuster repräsentiert, auf den unteren Zylinder gelegt wird,
    - der untere Zylinder mit Lichtstrahlung belichtet wird, wobei auf dem Zylinder nur die nicht belichteten Zonen der beschichteten Schicht zurückbleiben, wodurch ein belichteter Zylinder erhalten wird,
    - durch Elektrolyse auf dem belichteten Zylinder Metall abgelagert wird, wobei sich das Metall auf nicht beschichteten Zonen der photoempfindlichen Schicht ablagert, ohne die Perforationen des unteren Zylinders zu verschließen, wodurch ein vollständiger Zylinder erhalten wird, und
    - die Reste der photoempfindlichen Schicht von dem vollständigen Zylinder abgenommen werden, um die Trommel zu erhalten.
EP06755513.6A 2005-05-20 2006-05-19 Trommel zur herstellung eines gemusterten vliesstoffes und damit hergestellter vliesstoff Active EP1885927B2 (de)

Applications Claiming Priority (2)

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FR0505087A FR2885915B1 (fr) 2005-05-20 2005-05-20 Tambour pour machine de fabrication d'un non tisse a motifs et non tisse obtenu
PCT/FR2006/001141 WO2006123063A2 (fr) 2005-05-20 2006-05-19 Tambour pour machine de fabrication d'un non tisse a motifs et non tisse obtenu.

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FR2885915A1 (fr) 2006-11-24
ES2368080T5 (es) 2020-01-30
ATE518980T2 (de) 2011-08-15
WO2006123063A2 (fr) 2006-11-23
US20080193790A1 (en) 2008-08-14
WO2006123063A3 (fr) 2007-05-24
CN101198735A (zh) 2008-06-11
EP1885927B2 (de) 2019-05-08
FR2885915B1 (fr) 2007-08-03
EP1885927A2 (de) 2008-02-13
ES2368080T3 (es) 2011-11-14

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