WO2016124519A1 - Tissu industriel, procédé de fabrication d'un non-tissé et utilisation d'un tissu industriel - Google Patents

Tissu industriel, procédé de fabrication d'un non-tissé et utilisation d'un tissu industriel Download PDF

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Publication number
WO2016124519A1
WO2016124519A1 PCT/EP2016/052027 EP2016052027W WO2016124519A1 WO 2016124519 A1 WO2016124519 A1 WO 2016124519A1 EP 2016052027 W EP2016052027 W EP 2016052027W WO 2016124519 A1 WO2016124519 A1 WO 2016124519A1
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WO
WIPO (PCT)
Prior art keywords
threads
fabric
product
cmd
yarns
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2016/052027
Other languages
German (de)
English (en)
Inventor
Dieter Kuckart
Pascal Debyser
Jean-Louis Monnerie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AstenJohnson PGmbH
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AstenJohnson PGmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AstenJohnson PGmbH filed Critical AstenJohnson PGmbH
Priority to CA2975650A priority Critical patent/CA2975650A1/fr
Priority to CN201680013868.2A priority patent/CN107429457A/zh
Priority to US15/547,915 priority patent/US20170356104A1/en
Priority to EP16705900.5A priority patent/EP3277870A1/fr
Publication of WO2016124519A1 publication Critical patent/WO2016124519A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D03D1/0094—Belts
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/43—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with differing diameters
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
    • D03D15/46—Flat yarns, e.g. tapes or films
    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • 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
    • 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

Definitions

  • the invention relates to an industrial fabric, in particular for transporting a web of a nonwoven fabric during its manufacture, having a product side which is in contact with the nonwoven fabric, and a machine side which is in contact with transport means of a machine for producing the nonwoven fabric, wherein the Tissue in the running direction of the web of the nonwoven MD yarns and perpendicular thereto extending CMD threads interwoven with each other, and at least two layers of MD yarns are provided, which are arranged in pairs stacked above or below each other and product MD Threads and non-product MD threads, at least those of the
  • Product side facing surface of the respective product MD threads has a material having a contact angle, measured by the plate method of Wilhelmy, of at least 80 °, preferably at least 90 °.
  • the invention relates to a method for producing a nonwoven fabric, in particular in the form of an aerodynamically formed, chemically and / or solidified nonwoven fabric, wherein a web of the nonwoven fabric rests on a surface of a conveyor belt and is moved by the latter. Furthermore, the invention relates to the use of an industrial fabric of the aforementioned type.
  • said contact angle of the material is a measure of the surface free energy of the relevant surface of the MD yarns.
  • the contact angle between a liquid and a solid body is determined by measuring the force acting in a vertical direction on a vertically immersed plate (test specimen) Typically, the plate is attached to the force sensor of a so-called tensiometer the free
  • Contact angle of 0 ° in this case means that the liquid completely wets the material (spreading).
  • the material of the plate applies as wettable, at a contact angle of more than 90 ° as not wettable.
  • the contact angle approaches the theoretical limit of 180 °.
  • the contact angle is about 75 °, for pure PPS about 90 °, whereas PVDF has a contact angle of about 105 °.
  • Nonwovens are fabrics made from limited length or continuous filaments or cut yarns of various types by joining the fibers, filaments or yarns into a fibrous layer and permanently bonding them together in some way.
  • fabrics made from limited length or continuous filaments or cut yarns of various types by joining the fibers, filaments or yarns into a fibrous layer and permanently bonding them together in some way.
  • Nonwovens made from man-made fibers have increased enormously in recent decades
  • a nonwoven fabric can take place in that a fleece of fibers is formed by means of an air flow on an air-permeable base (aerodynamic web formation).
  • Nonwoven consolidation may e.g. done in a chemical manner by producing a material bond.
  • additives e.g. are used in the form of polymer dispersions (containing, for example, latex) and / or a thermal consolidation process is used, in which the fiber composite is likewise achieved by a material bond, which is e.g. is achieved by means of thermoplastic fibers.
  • the nonwoven fabric may comprise fibers of two components wherein a first, higher melting component (e.g., polyester) forms a fiber core encased in a second low melting temperature component (polyethylene). The production of the fiber composite is then carried out by melting the shells of the bicomponent fibers and / or curing of the polymer dispersion in an oven or a heated drying device.
  • the web of the nonwoven fabric being formed is guided through the various treatment devices by means of a conveyor belt with the surface of which the web is in contact.
  • a plurality of conveyor belts which are arranged one behind the other in the direction of passage, are used.
  • conveyor belts are used in plants for nonwoven fabric production with aerodynamic web formation and chemical and / or thermal consolidation typically industrial fabrics of monofilament threads used, as for example from the US
  • 2010/0291824 A1 are known.
  • a surface roughness of those surfaces of the conveyor that contact the nonwoven web is proposed in the aforementioned US patent application , which should be between 5 pm and 100 pm. This is intended to reduce the tendency for the adhesion of fibers or other contaminants to the threads of the conveyor belt and the replacement of the solidified nonwoven fabric are facilitated by the conveyor belt at the transition to a subsequent conveyor belt or otherwise transport through the system.
  • Conveyor belts which are made of the fabric according to the invention, can be significantly extended in this way and the production costs can be reduced accordingly.
  • the known fabric has two separate layers of fabric whose MD threads are in stacked relation to each other. This allows the product MD yarns located in the upper of the two layers to have the prescribed effect of reducing the
  • Adhesion tendency are optimized, whereas the non-product MD yarns located in the lower layer with respect to a different requirement, namely a high
  • the non-product MD yarns can also have a particularly high abrasion resistance so as not to cause excessive signs of wear due to contact with the continuous circulation in the installation
  • WO 2009/030033 A1 discloses a fabric used as a conveyor belt in the manufacture of a nonwoven fabric, the weave construction of this prior art fabric having no stacked MD yarns.
  • Tissue construction on a plurality of CMD thread layers is a deliberately large surface roughness of the threads exposed on the product side of the fabric in the range between 5 ⁇ m and 100 ⁇ m. This is intended, on the one hand, to reduce the soiling of the industrial fabric during use as a conveyor belt and, at the same time, to facilitate the detachment of the nonwoven web formed on the conveyor belt.
  • No. 7,121,306 B2 discloses technical fabrics with MD threads in a stacked arrangement. Some of the embodiments shown disclose single layer fabrics of CMD threads.
  • the previously known fabric is to be used in particular as a paper machine fabric or as a filter fabric.
  • a tissue is to be created whose opposite tissue surfaces can be different, in particular have different physical properties.
  • the seam used should have a lower tendency to leave unwanted marks on the paper web, but nevertheless have a high strength.
  • the problem of adhering fibers to the fabric according to US Pat. No. 7,121,306 B2 is not addressed in this document.
  • US 2003/0175514 A1 also discloses filaments, yarns produced therefrom, textile fabrics produced from the two first-mentioned and corresponding textile fabrics
  • a two component construction comprising a filament core of high tensile strength material and a filament sheath comprising a material having a contact angle of greater than 90 °, and typically halogenated hydrocarbons, e.g. PTFE exists.
  • the known filaments and the threads or fabrics produced therefrom should be water-repellent, which is why the textile fabrics produced therefrom
  • the fabrics should be breathable, i. permeable to water vapor and other gases.
  • the previously known filaments are spun as staple fibers into yarn and then used to fabrics for clothing, tents or in the camping sector. A use of the fibers for technical fabrics is just as little provided as special types of weaves of fabrics.
  • the invention has for its object to propose an industrial fabric that has a very low tendency to adhesion of fibers during the process step of the web bonding and therefore a long life when used as a conveyor belt in a plant for the production of nonwoven fabric, but it also characterized by a low tissue thickness, a low surface roughness and reduced manufacturing costs.
  • the fabric has a single layer of CMD threads, and that a respective cross section of the product MD threads has at least two regions, of which a first region of the first material and a second region of the second material, wherein of the second region a substantial, preferably predominant, proportion of a force acting on the respective product MD yarn tensile force is transferable and in that the cross-section of the product MD yarns has a second region in the form of a core and a first region in the form of a shell enclosing the core, wherein the product MD yarns are preferably coextruded or extruded in two successive steps, and in that the MD threads have a flattened, preferably rectangular, cross section, wherein a ratio of a height of the cross section to a width of the cross section is preferably between 1: 1, 2 and 1:10, preferably between 1: 1, 5 and 1: 4 ,
  • the fabric construction according to the invention is a very special one, since it has only a single CMD layer despite the stacked MD thread layers, i. the fabric is a classic piain weave.
  • the thickness of such a fabric is significantly reduced over fabrics having multiple layers of CMD yarns, resulting in e.g. an increased flexibility and the possibility of attending
  • Machine side possible.
  • the non-stick properties required on the product side for reducing the tendency to soil can be combined in a very simple manner with the strength and durability properties required on the machine side.
  • a respective cross section of the product MD threads has at least two regions, of which a first region consists of the first material and a second region of the second material, wherein of the second region a substantial, preferably predominant, proportion of a the respective product MD thread
  • the "coating" of the product MD yarns according to the invention can be carried out by means of a so-called wet coating or alternatively by means of a plasma coating (in a vacuum or under atmospheric conditions), but in principle also by way of all other conceivable coating processes. While at a so-called wet coating or alternatively by means of a plasma coating (in a vacuum or under atmospheric conditions), but in principle also by way of all other conceivable coating processes. While at a
  • wet coating the bonding of the coating material to the base material by means of adhesion, are present in a plasma coating cohesive bonds, which are more durable in comparison with adhesive.
  • Coating such coextruded or 2-stage extruded filaments have a shell thickness ranging between 0.02 mm and 0.07 mm, preferably between 0.03 mm and 0.06 mm.
  • the cross section of the MD threads or a part thereof and / or the cross section of the CMD threads or a part thereof is flattened, in particular rectangular, in particular flat rectangular.
  • height-width Ratios between 1: 1, 2 and 1:10 (height: width), preferably between 1: 1, 5 and 1: 4, into consideration.
  • the MD yarns or a part thereof and / or the CMD yarns or a part thereof are designed as monofilaments.
  • the cross section of the CMD threads or a part thereof may be round, elliptical or oval or polygonal and / or flattened, in particular rectangular.
  • the first region i. the non-stick material of fluorine-containing
  • Polymer for example a PVDF, an ETFE or a PTFE or copolymers of polyethylene with the aforementioned fluorine-containing polymers, and the second region, i. the core material of polyester, polyamide, polyphenylsulfide, polyetheretherketone,
  • Polypropylene, aramid, polyethacetone or polyethylene naphthalate Polypropylene, aramid, polyethacetone or polyethylene naphthalate.
  • the adhesion tendency of the nonwoven forming fibers to the fabric of the present invention can be further reduced if at least the material of a product side facing surface of at least those CMD yarns which may be in contact with or receive fibers from the web of the nonwoven fabric being formed, a contact angle, measured by the Wilhelmy plate method, of more than 80 °, preferably more than 90 °, more preferably more than 100 °.
  • a contact angle measured by the Wilhelmy plate method
  • Nonwoven web is also formed by the CMD threads, their non-stick properties are very beneficial.
  • the CMD yarns preferably have a round cross-section, which improves wearability.
  • the MD yarns are the warp yarns in the web-making of the fabric of the present invention, whereas the CMD yarns are the weft yarns of the fabric.
  • alternately one CMD yarn with a larger diameter and a CMD yarn with a smaller diameter can be arranged one behind the other alternately, wherein the CMD yarns with the smaller diameter with the Bind MD threads and preferably at least on one of the product side facing surface made of a material having a contact angle of more than 80 °, preferably more than 90 °, more preferably more than 100 °.
  • a portion of the MD yarns and / or the CMD yarns may be electrically conductive. This can be achieved in particular by the presence of carbon on an outer jacket of the cross section of the threads in question, which forms a conductive layer.
  • the carbon coating can, for example, by means of the usual
  • Coating process are produced in particular by means of a plasma coating.
  • the fabric is designed to be electrically conductive at least in the form of distributed individual filaments (for example, every fifth or eighth MD filament or CMD filament can be made electrically conductive)
  • an electric field can be generated around the industrial fabric configured as a circulating belt, whereby the adhesion of fibers in the production of the nonwoven fabric can be further prevented.
  • the introduction of the voltage required to generate the electric field takes place via the deflection devices (rollers), which are typically metallic and come into contact with the machine side of the fabric.
  • a particularly resilient seam of an endless belt results when a two
  • Tissue ends connecting seam is closed to form an endless conveyor belt, wherein the seam is a spiral seam having two extending over the entire width of the conveyor belt suture spirals, which are respectively screwed in loops of MD threads of the opposing fabric ends and mounted both are coupled together by means of a extending over the entire width of the conveyor belt closing wire.
  • the excellent anti-adhesion properties of the actual product side of the fabric also exists in the spiral seam when the suture spirals each consist of a thread whose cross-section at least two areas, namely on the one hand in the form of a soul and the other in the form of a soul enclosing Mantels, wherein the jacket consists of a material having a contact angle, measured according to the
  • Plate method of Wilhelmy of at least 80 °, preferably at least 90 °, more preferably at least 100 °.
  • the object mentioned above is also achieved by a method for producing a nonwoven fabric, in particular an aerodynamically formed and chemically and / or thermally bonded nonwoven fabric in which a web of the nonwoven fabric is moved on a surface of the conveyor belt in a manufacturing plant, in which According to the invention the conveyor belt consists of an industrial fabric according to one of claims 1 to 10.
  • the underlying object is also by the use of an industrial fabric according to any one of claims 1 to 10 as a conveyor belt for
  • Fig. 1 a schematic representation of the manufacturing steps for a
  • Fig. 2 a longitudinal section, an industrial fabric in a first
  • FIG. 3 shows a longitudinal section through an industrial fabric in a second
  • FIG. 4 shows a cross section through the tissue according to FIG. 4 in the region of a first one
  • Fig. 7 a longitudinal section through an industrial fabric in a fourth
  • Fig. 8 a fragmentary plan view of two ends of an industrial
  • FIG. 9 shows a perspective view of a fabric according to the invention in a fifth embodiment in the region of a spiral seam.
  • An installation 1 shown in FIG. 1 is used to produce an aerodynamically formed and both thermally and chemically consolidated nonwoven fabric which leaves the installation 1 at point 2 as an endless web.
  • the nonwoven fabric is formed from a fiber pulp mixed with bi-component fibers and a highly water-absorbent plastic granules.
  • the bi-component fibers have a core of polypropylene with a higher one Melting point and a sheath surrounded by the core of polyethylene with a lower melting point.
  • the starting materials are applied by means of a feeding device 3 on a forming belt 4 where forms a layer of material.
  • the nonwoven web is transferred to a spraying device 6, where an application of a polymer dispersion with binder properties takes place.
  • the nonwoven web is transported by means of a belt 7.
  • the nonwoven web is in a first
  • Drying device 8 (oven) transported where the web is transported by a conveyor belt 9.
  • the shells of the two component fibers are melted and cured in the spray 6 sprayed polymer dispersion. In this way, the cohesion of the fibers of the nonwoven fabric is created.
  • the nonwoven web is guided by a belt 10 through a second spraying device 11 before it is passed through a second drying device 13 by means of a second conveyor belt 12.
  • Nonwoven web is then insufficient, so that there is insufficient cohesion of the fibers and thus insufficient strength of the nonwoven web, since the required temperatures can not be achieved. Remedy will be
  • Figures 2 and 3 each show a longitudinal section, d. H. a section parallel to the running in the direction of the nonwoven fabric yarns, by industrial fabric 30, 40th
  • Figure 2 shows a fabric 30 with only one layer of CMD yarns 31, but again two stacked MD yarns 32 and 33. These have the same Course within the tissue; these are so-called double threads.
  • the MD threads 32, 33 always maintain their orientation relative to one another, ie they are not twisted or twisted together.
  • the MD thread 32 which is arranged on the product side PS of the fabric 30, thus always lies above the arranged on the machine side MS MD thread 33. With their facing surface areas are running in a stacked arrangement MD threads 32 and 33 in immediate contact.
  • the MD yarns 32, 33 have a flattened rectangular cross section, so that a stable stacking and maintaining the arrangement to each other can be achieved in the fabric composite.
  • An industrial fabric 40 shown in Figure 3 includes CMD yarns 41 and 42 disposed in a single CMD layer.
  • there are two layers of MD yarns 43 and 44 in the fabric 40 with the MD yarns 44 on the machine side MS and the MD threads 43 are arranged on the product side PS. 4 and 5, the CMD threads 42, which have a smaller diameter, are setting threads (see FIG. 5), whereas the CMD threads have a larger diameter 41 are to be designated as pure filling threads and run comparatively straight through the fabric 40 (see FIG. It can be seen that the CMD yarns 41 separate the respective pairs of MD yarns 43, 44 (FIG.
  • the MD yarns 43, 44 lie directly on top of each other in the area of the CMD yarns 42, ie in flat contact to stand by each other.
  • the MD yarns 43, 44 are the warp yarns and the CMD yarns 41, 42 are the weft yarns.
  • FIG. 6 shows a cross-section through a single MD thread as shown in FIGS
  • the flattened rectangular MD thread has a core 61 (thread core) and a surrounding this sheath 62 (thread sheath).
  • the outer contour of the core 61 is rectangular and has a height 63 of 0.36 mm and a width 64 of 1.07 mm.
  • the jacket 62 is also rectangular in its outer contour and has a height 65 of 0.45 mm and a width 66 of 1, 20 mm. This results in a thickness 67 of the shell 62 at its longitudinal sides of about 0.045 mm.
  • the sheath 62 is made of a material with a particularly high surface energy such as PVDF.
  • FIG. 7 shows by way of example in a longitudinal section the formation of a seam on a fabric 45 which, like the previously described fabrics 30, 40, has to be joined together to form an endless belt in order to be used as conveyor belt 9, 12, 15 in the plant 1 can.
  • Seam loops 47 are formed at a seam end 46 of the fabric 45, which are formed by cutting a lower MD yarn 48 at a location 49 and removing the remainder portion facing the seam end 46.
  • the upper MD thread 50 (product MD thread) of the associated stacked pair is inserted and with its end 51 to the point 49 at which the lower MD thread 48 (not Product MD thread) ends, returned.
  • the seam loop 47 is formed from the MD yarns 48.
  • the CMD yarns 52 of the fabric 45 remain in this
  • Seam loops 47 have been formed from the MD yarns 50 and the adjacent MD yarns 50 have remained without seam loop formation. In staggered arrangement of
  • the interleaved rows of seam loops 47 form a continuous seam channel into which a closure wire 56 (in the manner of a CMD yarn) is inserted, thereby closing the seam and making an endless belt.
  • FIG. 9 shows a perspective view of another fabric 70 according to the invention with an alternative embodiment of the seam, namely in the form of a spiral seam.
  • An industrial fabric 70 which apart from the seam ends has the same construction as the fabric according to FIGS. 3 to 5, has warp loops 71, which are formed from the MD yarns 72, 73, at both free ends (viewed in the MD direction) in that they are woven back over a certain length on the machine side MS of the fabric 70.
  • the warp loops 71 whose ends lie on a common line which is perpendicular to the MD threads 72, 73, is for the formation of a
  • the thread 75 has a round or flattened cross-section and is composed of two components, namely a filament core 76 and a cross-sectionally concentric surrounding this sheath 77.
  • the thread 75 can through Coextrusion or by a multi-stage extrusion can be prepared by first the thread core 76 is prepared by extrusion and then surrounded by a second extrusion with the material of the suture sheath 77.
  • the jacket 77 like the product side PS facing surface of the MD threads 72, 73 of a material having a contact angle, measured by the plate method of Wilhelmy, of at least 80 °.
  • Tissue ends are joined together.
  • the core 76 present in the thread 75 makes it possible, by selecting a material with high tensile strength, to ensure the necessary stability and tensile strength of the seam.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un tissu industriel (30, 40, 45), destiné en particulier à transporter une bande d'un non-tissé pendant la fabrication de ce dernier. Le tissu possède un côté produit (PS), qui est en contact avec le non-tissé, et un côté machine (MS), qui est en contact avec les dispositifs de transport d'une installation (1) de fabrication du non-tissé, le tissu (30, 40, 45) comprenant des fils sens longitudinal (32, 33, 43, 44, 48, 50) s'étendant dans le sens de marche de la bande du non-tissé et des fils sens transversal (31, 41, 42, 52) s'étendant perpendiculairement à ces derniers, qui sont tissés ensemble, au moins deux couches de fil sens longitudinal (32, 33, 43, 44, 48, 50) étant présentes, qui sont agencées les unes au-dessus des autres ou les unes au-dessous des autres en étant empilées par paires et qui forment des fils sens longitudinal de produit (32, 43, 50) et des fils sens longitudinal de non produit (33, 44, 48), au moins le matériau, tourné vers le côté produit (PS), des fils sens longitudinal de produit (32, 43, 50) respectifs possédant un angle de contact, mesuré selon la méthodes des plaques de Wilhelmy, d'au moins 80°, de préférence d'au moins 90°, mieux encore d'au moins 100°. L'invention vise à empêcher les fibres d'adhérer au tissu (30, 40, 45) et à réduire la perméabilité à l'air. À cet effet, le tissu possède une seule couche de fils sens transversal (31, 41, 42, 52) et une section transversale respective des fils sens longitudinal de produit (32, 43, 50) comprenant au moins deux zones, parmi lesquelles une première zone est constituée du premier matériau et une deuxième zone est constituée du deuxième matériau, une part considérable, de préférence majoritaire, d'une force de traction agissant sur le fil sens longitudinal de produit (32, 43, 50) respectif pouvant être transférée depuis la deuxième zone et la section transversale des fils sens longitudinal de produit (32, 43, 50) comprend une deuxième zone prenant la forme d'une âme (61) et une première zone prenant la forme d'un revêtement (62) enrobant l'âme (61), les fils sens longitudinal de produit (32, 43, 50) étant de préférence co-extrudés ou extrudés au cours de deux étapes successives, et les fils sens longitudinal (32, 33, 43, 44, 48, 50) possèdent une section transversale aplatie, de préférence rectangulaire, un rapport entre une hauteur de la section transversale et une largeur de la section transversale étant de préférence compris entre 1:1,2 et 1:10, de préférence entre 1:1,5 et 1:4. L'invention concerne en outre un procédé de fabrication d'un non-tissé et l'utilisation d'un tissu industriel (30, 40, 45).
PCT/EP2016/052027 2015-02-02 2016-02-01 Tissu industriel, procédé de fabrication d'un non-tissé et utilisation d'un tissu industriel Ceased WO2016124519A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2975650A CA2975650A1 (fr) 2015-02-02 2016-02-01 Tissu industriel, procede de fabrication d'un non-tisse et utilisation d'un tissu industriel
CN201680013868.2A CN107429457A (zh) 2015-02-02 2016-02-01 工业织物、用于制造无纺布料的方法以及工业织物的应用
US15/547,915 US20170356104A1 (en) 2015-02-02 2016-02-01 Industrial fabric, method for producing a nonwoven, and use of an industrial fabric
EP16705900.5A EP3277870A1 (fr) 2015-02-02 2016-02-01 Tissu industriel, procédé de fabrication d'un non-tissé et utilisation d'un tissu industriel

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DE102015101449.1A DE102015101449A1 (de) 2015-02-02 2015-02-02 Industrielles Gewebe, Verfahren zur Herstellung eines Vliesstoffs sowie Verwendung eines industriellen Gewebes

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EP1136527A4 (fr) * 1998-10-19 2003-07-09 Toto Ltd Materiau resistant aux salissures, procede et dispositif de production et composition de revetement
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JP4883629B2 (ja) * 2007-03-13 2012-02-22 イチカワ株式会社 湿紙搬送用ベルト
CA2600307A1 (fr) 2007-09-07 2009-03-07 Ralph Roemer Tissu de fabrication de non tisses files par fusion ou par voie seche, comprenant des fils profiles pour facilitation du lavage et resistance a la contamination
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US7121306B2 (en) * 2001-07-05 2006-10-17 Astenjohnson, Inc. Industrial fabric including yarn assemblies
GB2492644A (en) * 2011-07-04 2013-01-09 Don & Low Ltd Polymer fabrics

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US20170356104A1 (en) 2017-12-14
CN107429457A (zh) 2017-12-01
DE102015101449A1 (de) 2016-08-04
CA2975650A1 (fr) 2016-08-11

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