EP0657572B1 - Verfahren zur Herstellung eines gewebten/nicht-gewebten thermoklebenden Produktes, insbesondere für Fixiereinlagestoffe mit auf unterschiedlichen Temperaturen heizschmelzbaren Punkten und Anlage zum Ausführen dieser Methode - Google Patents

Verfahren zur Herstellung eines gewebten/nicht-gewebten thermoklebenden Produktes, insbesondere für Fixiereinlagestoffe mit auf unterschiedlichen Temperaturen heizschmelzbaren Punkten und Anlage zum Ausführen dieser Methode Download PDF

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Publication number
EP0657572B1
EP0657572B1 EP19930119758 EP93119758A EP0657572B1 EP 0657572 B1 EP0657572 B1 EP 0657572B1 EP 19930119758 EP19930119758 EP 19930119758 EP 93119758 A EP93119758 A EP 93119758A EP 0657572 B1 EP0657572 B1 EP 0657572B1
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EP
European Patent Office
Prior art keywords
woven
temperature
thermoadhesive
roll
plant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19930119758
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English (en)
French (fr)
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EP0657572A1 (de
Inventor
Gian Piero Quaglino
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TEXIL SpA
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TEXIL SpA
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Publication date
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Priority to EP19930119758 priority Critical patent/EP0657572B1/de
Priority to DE1993619602 priority patent/DE69319602T2/de
Publication of EP0657572A1 publication Critical patent/EP0657572A1/de
Application granted granted Critical
Publication of EP0657572B1 publication Critical patent/EP0657572B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • 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
    • D04H1/58—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/66—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions at spaced points or locations
    • 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
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—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 thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes

Definitions

  • This invention relates to a method for producing a woven/non-woven thermoadhesive product particularly for interfacings comprising dots melting at differential temperature, in which heat-molten resins are extruded and deposited on the woven/non-woven fabric support and then covered with resin granules of a different melting point by means of a resin strewer. The fabric is then cleaned of all the excess deposited granules to leave it clean and ready for use.
  • the present invention also relates to a plant for producing a woven/non-woven thermoadhesive product, the plant comprising a conveyor belt of low adhesive power.
  • thermoadhesion concept and the double dot system they start by depositing resins in paste and powder form (see FR-A-2 346 058).
  • thermoadhesive material can penetrate into the thickness of the fabric substrate and cause it to harden.
  • feel of the fabric is strongly compromised.
  • a transfer support is covered with droplets of an at least partly thermoadhesive substance, these droplets then being heated to ensure adhesion.
  • the droplets are then brought into contact with the fabric without heating it, to enable the thermoadhesive substance to be transferred from the transfer support to said woven/non-woven substrate but without penetrating into the substrate.
  • the object of the present invention is therefore to provide a method for producing a product in woven/non-woven thermoadhesive form for use in the clothing field, which in the light of the drawbacks consequent on the use of methods of the known art offers two main characteristics, namely that the thermoadhesive substance which is deposited on the fabric substrate remains on the surface of the product, ie does not penetrate into it and therefore does not produce stiffening and traversing problems, and that the fabric substrate used, which can also be of non-woven type, is not subjected to excessive heating and hence does not suffer deterioration during production.
  • the invention therefore firstly provides a method for producing a woven/non-woven thermoadhesive product particularly for interfacings for use in the clothing field, characterised by presenting dots melting at differential temperature and comprising the following processing stages in succession: melting heat-sensitive resins of any type and then extruding them onto an indented roll of low adhesion material; transferring the extruded material from the indented roll onto a preheated conveying transfer belt of medium adhesion material; preheating the material on the transfer belt and passing it from the transfer belt to a woven/non-woven substrate; activating with positive electrical charges; depositing resin microgranules having a melting point different from that of the base material; fixing the dots by passage through a micrometrically regulated cooled calender; deactivating the resin material with negative electrical charges; cleaning the woven/non-woven substrate by beating and blowing, followed by sucking off the material not retained by the substrate.
  • the invention also provides a plant for implementing said method, comprising a first indented roll of low adhesion material arranged to receive the thermoadhesive material by extrusion by a pump connected to it, first heating means positioned in proximity to the roll, guide and support means with a medium adhesion surface for thermoadhesive material transfer, a second discharge roll provided with associated second heating means, and cleaning means for the transfer support; said discharge roll being associated with a deviation and receiving roller positioned along a woven/non-woven product processing line along which means are also provided for strewing low melting-point resins over the thermoadhesive material, means for applying alternate positive and negative electrical charges to the thermoadhesive material, means for fixing the thermoadhesive material to the woven/non-woven substrate, beating means and blowing means associated with means for sucking off the excess material.
  • the reference numeral 1 indicates an extruder of pump type, but which can equally be of another type, in which the granules of heat-sensitive material are melted. Any type of heat-meltable granule can be advantageously used, according to the method of the present invention, to form the substrate for the subsequent resin dot of differential melting point.
  • the extruded material is transferred via one end 2 of the extruder 1 to an indented roll 3, the indentations of which are in a number, diameter, depth and design which depend on the quantity of material to be deposited.
  • the shape of the indentations in the roll 3 is chosen in accordance with the dot shape to be obtained on the fabric.
  • a preferred shape for example is a ring shape.
  • the advantage of this shape is that the dot which then forms on the fabric layer tends to assume a dish shape, with the consequent advantage of offering a greater containing capacity for the resin microgranules which are later strewn over it in accordance with the method of the invention.
  • the indented roll 3, onto which the molten material is fed at a temperature exceeding 200°C, is conveniently controlled to a temperature of 150-180°C, and being of low adhesion material is able to easily transfer the thermoadhesive material dots onto a belt of medium adhesion material at the point in which it comes into contact with the roll 3.
  • thermoadhesive material dots 7 forms part of a conveying system for the thermoadhesive material dots 7, which comprises an assembly of temperature-controlled rollers 8 arranged to enable the belt to slide along the roll 3 at one end, and at the other end by means of a discharge roll 9 to discharge the dots 7 onto a woven/non-woven substrate 10 running adjacent to it.
  • the belt 6 and the dots 7 can be conveniently temperature-controlled, at 150-180°C for the former and at 70-90°C for the latter, by two infra-red banks 12, 13 positioned at the periphery of the rolls 3 and 9.
  • the dots conveyed by the belt 6 undergo a change of state at their inner and outer surfaces to become molten dots.
  • thermoadhesive dots pass from the belt surface to a woven/non-woven substrate 10 passing around the roll 9, as this substrate is of greater adhesion.
  • One of the advantages of the method of the invention compared with the traditional method is that the woven/non-woven substrate is not subjected to thermal shock with consequences apparent only later, and hence resulting in a better feel and a saving in energy.
  • the belt 6 After transferring the thermoadhesive dots to the woven/non-woven substrate 10, the belt 6 proceeds along its endless path and is deviated by the rollers 8 to the indented roll 3.
  • the rollers 8 Of the rollers 8, one is a cold roller temperature-controlled at 30-50°C and is positioned immediately downstream of the roll 9 to cool the belt and enable it to be cleaned by a scraper 14 associated with the next roller.
  • a collection tray 15 collects the pieces scraped from the belt so that they can be salvaged.
  • the fourth and last roller 8 returns the belt to a predetermined temperature to enable it to repeat the cycle by again collecting the extruded dots from the roll 3.
  • the woven/non-woven fabric is then moved through the subsequent stages of the method of the present invention by the following device.
  • thermoadhesive dots thus charged with energy absorb in an optimum manner resin microgranules of different melting point strewn by a resin strewer arranged along the path of the fabric.
  • the woven/non-woven fabric is then passed through a further calender 22 maintained at a temperature of about 17-20°C, by which the resin microgranules strewn by the resin strewer 20 are incorporated into the thermoadhesive dots 7.
  • the device of the invention also comprises a negative charge applicator 23 for negatively charging the dots 7, and a series of carrier rollers 24 with a suction device interposed in a position corresponding with a blower 26 and a beater 27.
  • a negative charge applicator 23 for negatively charging the dots 7, and a series of carrier rollers 24 with a suction device interposed in a position corresponding with a blower 26 and a beater 27.
  • the described method results in a perfectly frusto-conical or drop-shaped dot, with resultant improvement both in adhesion and in the feel of the fabric.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (11)

  1. Verfahren zur Herstellung eines gewebten/nicht-gewebten thermohaftenden Produktes, insbesondere für Einlagestoffe zur Verwendung im Bekleidungsbereich,
    gekennzeichnet durch
    das Erzeugen von punktförmigen Teilchen, die bei unterschiedlichen Temperaturen schmelzen, wobei es die folgenden Bearbeitungsschritte umfaßt :
    Schmelzen von wärmeempfindlichen Harzen jeder Art, die danach auf eine eingekerbte Walze aus einem Material mit geringer Haftfähigkeit extrudiert werden;
    Übertragen des extrudierten Materials von der eingekerbten Walze auf ein vorgeheiztes Transportförderband aus einem Material mit mittlerer Haftfähigkeit;
    Vorheizen des auf dem Förderband befindlichen Materials und Übertragen des Materials von dem Förderband auf ein gewebtes/nicht-gewebtes Substrat;
    Aktivieren mit positiven elektrischen Ladungen;
    Aufbringen von Harzmikrogranulat mit einem Schmelzpunkt, der unterschiedlich zu dem des Basismaterials ist;
    Fixieren der punktförmigen Teilchen, indem sie einen mikrometrisch geregelten, gekühlten Kalander durchlaufen;
    Deaktivieren des Harzmaterials mit negativen elektrischen Ladungen;
    Säubern des gewebten/nicht-gewebten Substrats durch Abklopfen und Wegblasen, gefolgt von Absaugen des nicht an das Substrat gebundenen Materials.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß
    die Form der Einkerbungen in der eingekerbten Walze, die aus einem Material mit geringer Haftfähigkeit besteht, direkt von der Form des auf das gewebte/nichtgewebte Substrat aufzubringenden schmelzenden, punktförmigen Teilchens abhängt.
  3. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß
    die wärmeempfindlichen Harze in Form von Granulat vorliegen.
  4. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß
    das extrudierte Material auf einer Temperatur zwischen 70 und 90°C gehalten wird.
  5. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß
    das Förderband aus einem Material mit mittlerer Haftfähigkeit auf einer Temperatur zwischen 150 und 180°C gehalten wird.
  6. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß
    das Förderband auf eine Temperatur zwischen 30 und 50°C abgekühlt wird, um dessen Säuberung zu erleichtern, nachdem das extrudierte Material von ihm auf das gewebte/nicht-gewebte Substrat übertragen wurde.
  7. Vorrichtung zum Durchführen des in den Ansprüchen 1 bis 6 beanspruchten Verfahrens,
    gekennzeichnet durch
    eine erste eingekerbte Walze (3) aus einem Material mit geringer Haftfähigkeit, die so angeordnet ist, daß sie das mittels einer ihr zugeordneten Pumpe (1) extrudierte thermohaftende Material aufnimmt, eine nahe der Walze angeordnete erste Heizvorrichtung (12), eine temperaturgeregelte Führungs- und Haltevorrichtung (6, 8) mit einer mittelstark haftenden Oberfläche zum Transport des thermohaftenden Materials, eine zweite Entladewalze, der eine zweite Heizvorrichtung (13) zugeordnet ist, und eine Säuberungsvorrichtung (14) für die Transport-Haltevorrichtung; wobei die Entladewalze mit einer Umlenk- und Aufnahmewalze (18) zusammenwirkt, die entlang der Bearbeitungsstraße für das gewebte/nichtgewebte Produkt angeordnet ist, entlang der auch eine Vorrichtung (20) zum Streuen von Harzen mit niedrigem Schmelzpunkt über das thermohaftende Material, Mittel zum abwechselnden Aufbringen positiver und negativer elektrischer Ladungen auf das thermohaftende Material, Mittel (22) zum Fixieren des thermohaftenden Materials an dem gewebten/nicht-gewebten Substrat, eine Abklopfvorrichtung (27) und eine Gebläsevorrichtung (26) vorgesehen sind, die mit einer Vorrichtung (25) zum Absaugen des überschüssigen Materials zusammenwirkt.
  8. Vorrichtung nach Anspruch 7,
    dadurch gekennzeichnet, daß
    die aus einem Material mit geringer Haftfähigkeit gebildete erste eingekerbte Walze (3) mit einem Temperaturregelsystem ausgestattet ist, um sie auf einer Temperatur zwischen 150 und 180°C zu halten.
  9. Vorrichtung nach Anspruch 8,
    dadurch gekennzeichnet, daß
    die erste und zweite Heizvorrichtung (12, 13) aus Infrarotbänken bestehen.
  10. Vorrichtung nach Anspruch 8,
    dadurch gekennzeichnet, daß
    das Mittel zum Fixieren des thermohaftenden Materials auf dem gewebten/nichtgewebten Substrat ein Kalander ist, der auf einer Temperatur zwischen 17 und 20°C gehalten wird.
  11. Vorrichtung nach Anspruch 8,
    dadurch gekennzeichnet, daß
    die Führungs- und Haltevorrichtung aus einer Anordnung von temperaturgeregelten Walzen (8) besteht, von denen wenigstens eine auf eine Temperatur von 30 bis 50°C geregelt ist.
EP19930119758 1993-12-08 1993-12-08 Verfahren zur Herstellung eines gewebten/nicht-gewebten thermoklebenden Produktes, insbesondere für Fixiereinlagestoffe mit auf unterschiedlichen Temperaturen heizschmelzbaren Punkten und Anlage zum Ausführen dieser Methode Expired - Lifetime EP0657572B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19930119758 EP0657572B1 (de) 1993-12-08 1993-12-08 Verfahren zur Herstellung eines gewebten/nicht-gewebten thermoklebenden Produktes, insbesondere für Fixiereinlagestoffe mit auf unterschiedlichen Temperaturen heizschmelzbaren Punkten und Anlage zum Ausführen dieser Methode
DE1993619602 DE69319602T2 (de) 1993-12-08 1993-12-08 Verfahren zur Herstellung eines gewebten/nicht-gewebten thermoklebenden Produktes, insbesondere für Fixiereinlagestoffe mit auf unterschiedlichen Temperaturen heizschmelzbaren Punkten und Anlage zum Ausführen dieser Methode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19930119758 EP0657572B1 (de) 1993-12-08 1993-12-08 Verfahren zur Herstellung eines gewebten/nicht-gewebten thermoklebenden Produktes, insbesondere für Fixiereinlagestoffe mit auf unterschiedlichen Temperaturen heizschmelzbaren Punkten und Anlage zum Ausführen dieser Methode

Publications (2)

Publication Number Publication Date
EP0657572A1 EP0657572A1 (de) 1995-06-14
EP0657572B1 true EP0657572B1 (de) 1998-07-08

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EP19930119758 Expired - Lifetime EP0657572B1 (de) 1993-12-08 1993-12-08 Verfahren zur Herstellung eines gewebten/nicht-gewebten thermoklebenden Produktes, insbesondere für Fixiereinlagestoffe mit auf unterschiedlichen Temperaturen heizschmelzbaren Punkten und Anlage zum Ausführen dieser Methode

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DE (1) DE69319602T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030205A1 (de) * 1996-02-14 1997-08-21 Cavitec Ag Verfahren und vorrichtung zum erzeugen von nicht-filmbildenden beschichtungen mit mehrschichtigem aufbau
PT864686E (pt) * 1997-02-26 2004-02-27 Solipat Ag Processo e dispositivo para o revestimento de uma estrutura plana com forma de faixa
EP3088582B1 (de) * 2013-12-27 2020-04-01 Toray Industries, Inc. Kohlefaser-vliesstoff, herstellungsverfahren für den kohlefaser-vliesstoff und vliesstoff aus kohlefaser-vorläuferfasern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573106A (en) * 1976-03-19 1980-08-13 Dynic Corp Method and apparatus for manufacturing fusible interlinings
ATA287276A (de) * 1976-03-31 1979-02-15 Caratsch Hans Peter Verfahren und einrichtung zum aufbringen von kunstharzpulver in einer rasterfoermigen beschichtung auf bahnmaterial
FR2672313B1 (fr) * 1991-02-05 1993-04-30 Picardie Lainiere Procede de fabrication d'entoilages thermocollants, entoilage thermocollant.

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DE69319602T2 (de) 1999-03-18
EP0657572A1 (de) 1995-06-14
DE69319602D1 (de) 1998-08-13

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