EP2596165A1 - Device for applying fluid media - Google Patents

Device for applying fluid media

Info

Publication number
EP2596165A1
EP2596165A1 EP11741161.1A EP11741161A EP2596165A1 EP 2596165 A1 EP2596165 A1 EP 2596165A1 EP 11741161 A EP11741161 A EP 11741161A EP 2596165 A1 EP2596165 A1 EP 2596165A1
Authority
EP
European Patent Office
Prior art keywords
web
smoothing contour
smoothing
contour
doctor blade
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.)
Withdrawn
Application number
EP11741161.1A
Other languages
German (de)
French (fr)
Inventor
Heinrich Mensing
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.)
Truetzschler Nonwovens GmbH
Original Assignee
Truetzschler Nonwovens GmbH
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 Truetzschler Nonwovens GmbH filed Critical Truetzschler Nonwovens GmbH
Publication of EP2596165A1 publication Critical patent/EP2596165A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • 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
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
    • D06N7/0076—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing the back coating or pre-coat being a thermoplastic material applied by, e.g. extrusion coating, powder coating or laminating a thermoplastic film
    • 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
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/06—Melt

Definitions

  • the invention relates to a device for applying fluid media according to the preamble of the device claim.
  • the fibers forming the pile are introduced into a carrier layer, and the pile naps or pile loops on the back of the carpet subsequently have to be fixed.
  • the back For this it is known to coat the back with latex material.
  • a method for back coating a carpet is known from 10 2005 060 450 AI.
  • the solidification of a carpet backing or another textile fabric by means of a hot melt adhesive using a slot die is known from DE 10 2008 045 753 AI, DE 10 2008 010 091 AI and DE10 2008 020 716 AI.
  • the hot melt adhesive is brought to a temperature at which it has a viscosity which allows penetration into the fiber material of the back fabric and / or the pile loops and / or into the structure of the fabric composite (back and pile loops).
  • slot die One embodiment of a slot die is shown in US 4,867,982.
  • the slot nozzle has a coating blade (squeegee) trailing in the transport direction of the material to be coated. By means of this, the coating of the coating material takes place. The quality and quantity of the coating depends to a large extent on the setting of this coating blade to the surface of the material to be coated.
  • the applicator slot of said nozzle body is formed by two massive nozzles.
  • the applicator slot surrounding the end portions of the nozzle body are differently shaped and form in the transport direction to be coated mate rials ⁇ a respective upstream and a trailing edge.
  • DE 10 2007 056 121 B3 shows a slot die, which is likewise formed by two nozzle bodies.
  • the nozzle bodies are mutually adjustable or pivotable, which allows a dosage of the medium to be applied over the gap width.
  • the end regions of the nozzle bodies which are in sliding contact with the web to be coated have differently rounded shapes and form, on principle, two doctor blades applied in the direction of transport of the material to be coated.
  • the application device for hot glue according to EP 1 752 506 A1 uses a slot die in which the application area (gap) of two nozzle bodies is limited.
  • the end regions of the nozzle bodies that are in contact with the material to be coated are formed flat and cause a certain compression of the material in the coating area.
  • the corresponding counterpart compressive force experiences the material to be coated by a sliding pad or a rotating transport roller.
  • US Pat. No. 4,688,516 describes an application unit with a multi-chamber system and two meterably adjustable doctor blades.
  • the medium to be applied is collected in a first chamber, excess material in a trailing chamber and returned.
  • the structure is complex and also no installation position is possible.
  • the invention is therefore based on a device for applying fluid media to web-like material, in particular for applying hot melt to a textile material, and in particular for solidifying a carpet backing or an artificial turf, consisting of a transversely extending to the web direction gap-shaped application area for the Medium, which is limited in the transport direction of the web by a trailing and the surface of the web facing blade.
  • Object of the present invention is to further develop such a device and in particular to improve the quality of the order, the coating.
  • a smoothing contour cooperating with the applied medium is arranged downstream.
  • the application area for the medium is delimited by a trailing doctor blade, which can be made positive or negative with respect to the moving web surface.
  • the doctor edge sweeps the adhesive to be applied over the web surface, the material to be coated, and thus doses the order quantity.
  • the inventively provided and the doctor blade downstream Smoothing distributed, smooths and processes the applied adhesive in addition. Inhomogeneities in order strength evened out, improves the penetration of the adhesive into the structure of the web material.
  • the smoothing contour is part of a running parallel to the doctor bar.
  • the smoothing contour is part of a structure formed on the doctor blade.
  • the smoothing contour is part of a squeegee-bearing housing.
  • the smoothing contour is adjustable by adjusting means with respect to the upstream doctor and thus with respect to the surface of the goods.
  • the distance of the smoothing contour is adjustable to the fabric surface.
  • the angular position of the smoothing contour is adjustable to the fabric surface.
  • the smoothing contour is associated with a heating device.
  • the smoothing contour has a coating or consists of a material which is difficult to be wetted by the hot melt adhesive in the molten state.
  • the invention is very advantageous if the smoothing contour is provided with a coating which is difficult to wet by the hot melt adhesive.
  • the trained as a strip smoothing contour can also be made of a corresponding material.
  • a further advantageous development of the invention provides that the smoothing contour is provided with a heating device, by means of which the smoothing contour (whose surface coming into contact with the hot-melt adhesive) can be heated.
  • the heating device is, for example, an electrically controlled controller which causes heating via heating windings integrated in the strip of the smoothing contour.
  • a temperature of selected temperature which corresponds to the melting temperature of the heating adhesive.
  • the smoothing contour, the corresponding bar or its holder is provided with an adjusting device, so that the smoothing contour with respect to the upstream doctor and thus also with respect to the goods (surface of the adhesive layer) is adjustable according to the circumstances.
  • a stronger pitch against the product thus causes a stronger Einreib Qureib Quresib Quresib Quresib Quresib
  • Too much hiring is again to avoid, otherwise there is a scraping of the hot melt adhesive through the smoothing contour.
  • an appropriately designed adjusting device not only the distance of the smoothing contour to the surface of the product but also the position, inclination of the smoothing contour can be changed.
  • FIG. 1 shows an embodiment of the invention.
  • a web-like carpet 1 or artificial turf is guided with the downwardly facing pile side 2 at an over the width of the material web extending slot die 3.
  • the direction of movement of the material web 1 is indicated by the arrow.
  • About the slot die 3 is carried out an order of liquefied by heating hot melt adhesive 4 on the back of the product.
  • the hot melt adhesive 4 After being cooled down, the pile loops (pile side 2) tufted in the back (the fabric) are fixed.
  • the slot die 3 consists of a housing 5 designed as a hollow body and open at the bottom, which forms a chamber in the interior and can be acted upon with molten hot-melt adhesive 4 via supply lines (not shown).
  • a housing 5 designed as a hollow body and open at the bottom, which forms a chamber in the interior and can be acted upon with molten hot-melt adhesive 4 via supply lines (not shown).
  • two doctor blades 6, 7 are arranged, which run at an angle to each other and their ends facing the goods 1 form a metering gap S.
  • the doctor blades 6, 7 can be adjusted to each other, which in total a meterability in dependence of Viscosity of the hot-melt adhesive 4 to be processed and the order quantity to be achieved on the product 1 (basis weight). Based on the transport direction of the product 1, the one doctor 6 is positive, the other squeegee 7 employed negative.
  • the slot die 3 as a whole with respect to the product 1 is adjustable, ie the pressure of the nozzle 3 with respect to the moving goods 1.
  • the product 1 can be guided here stretched over a rotating cylinder or two rollers arranged at a distance.
  • the trailing in the transport direction of the product 1 and negatively employed squeegee 7 is arranged downstream of a smoothing contour 8, which is formed in the embodiment shown here as a down semicircular shaped bar, which is parallel to the slot die 3 and extends over the length thereof.
  • This strip 8 is connected via fasteners, not shown, with the slot die 3 and in particular also adjustable by means of adjustment with respect to the slot die 3.

Abstract

The invention relates to a device for applying fluid media to material that is moved in a web-like manner, in particular for applying hot-melt adhesive (4) to a textile material, and in particular for reinforcing the back of carpet or synthetic turf (1), consisting of a gap-shaped application region (3), for the medium (4), which extends transversely to the web direction and is delimited in the transport direction of the web (1) by a trailing doctor blade (7) facing the surface of the web (1). According to the invention, a smoothing contour (8) cooperating with the applied medium (4) is provided downstream of the doctor blade (7) in the transport direction of the web (1).

Description

Vorrichtung zum Auftragen von fluiden Medien  Device for applying fluid media
Die Erfindung betrifft eine Vorrichtung zur Auftragen von fluiden Medien gemäß der Gattung des Vorrichtungsanspruches. The invention relates to a device for applying fluid media according to the preamble of the device claim.
Bei der Herstellung eines Teppichs im Tufting-Verfahren werden die den Flor bildenden Fasern in eine Trägerschicht eingebracht, die Polnoppen bzw. Polschlingen auf der Teppichrückseite müssen anschließend noch fixiert werden. Dazu ist es bekannt, die Rückseite mit Latexmaterial zu bestreichen. Ferner ist es bekannt, zu Fixierung, Verankerung der Polnoppen auf der Teppichrückseite einen Kunststoff aufzutragen. Auch ist es möglich, eine weitere Schicht als Zweitrücken an die Rückseite anzubringen. Ein Verfahren zur Rückenbeschichtung eines Teppichs ist aus der 10 2005 060 450 AI bekannt. Die Verfestigung eines Teppichrückens bzw. eines sonstigen textilen Gewebes mittels eines Heißklebers unter Verwendung einer Breitschlitzdüse ist aus der DE 10 2008 045 753 AI, der DE 10 2008 010 091 AI sowie der DE10 2008 020 716 AI bekannt. Der Heißkleber wird auf eine Temperatur verbracht, bei welcher er eine Viskosität aufweist, welche eine Penetration in das Fasermaterial des Rückengewebes und/oder der Polschlingen und/oder in die Struktur des Gewebeverbundes (Rücken und Polschlingen) ermöglicht. In the production of a carpet in the tufting process, the fibers forming the pile are introduced into a carrier layer, and the pile naps or pile loops on the back of the carpet subsequently have to be fixed. For this it is known to coat the back with latex material. Furthermore, it is known to apply a fixation, anchoring the tufts on the back of the carpet a plastic. It is also possible to attach another layer as a second back to the back. A method for back coating a carpet is known from 10 2005 060 450 AI. The solidification of a carpet backing or another textile fabric by means of a hot melt adhesive using a slot die is known from DE 10 2008 045 753 AI, DE 10 2008 010 091 AI and DE10 2008 020 716 AI. The hot melt adhesive is brought to a temperature at which it has a viscosity which allows penetration into the fiber material of the back fabric and / or the pile loops and / or into the structure of the fabric composite (back and pile loops).
Eine Ausführung einer Breitschlitzdüse zeigt die US 4,867,982. Die Schlitzdüse weist eine in Transportrichtung des zu beschichtenden Materials nachlaufende Streichklinge (Rakel) auf. Mittels dieser erfolgt das Aufstreichen des Beschich- tungsmaterials. Die Qualität und Quantität der Beschichtung hängt im hohen Maße von der Einstellung dieser Streichklinge zur Oberfläche des zu beschichtenden Materials ab. One embodiment of a slot die is shown in US 4,867,982. The slot nozzle has a coating blade (squeegee) trailing in the transport direction of the material to be coated. By means of this, the coating of the coating material takes place. The quality and quantity of the coating depends to a large extent on the setting of this coating blade to the surface of the material to be coated.
Eine Breitschlitzdüse mit einer über die Materialbreite zonal unterschiedlich ein¬ stellbaren Dosierung des Beschichtungsmediums beschreibt die EP 0 568 812 Bl. Der Auftragsschlitz dieser Düse wird durch zwei massive Düsen körper gebildet. Die den Auftragschlitz umgebenden Endbereiche der Düsenkörper sind unterschiedlich geformt und bilden in Transportrichtung des zu beschichtenden Mate¬ rials je eine vor- und eine nachlaufende Kante. A slot die having a width on the material zonally different ¬ an adjustable metering of the coating medium, EP 0568812 Bl. The applicator slot of said nozzle body is formed by two massive nozzles. The applicator slot surrounding the end portions of the nozzle body are differently shaped and form in the transport direction to be coated mate rials ¬ a respective upstream and a trailing edge.
Die DE 10 2007 056 121 B3 zeigt eine Breitschlitzdüse, welche ebenfalls von zwei Düsenkörpern gebildet wird. Die Düsenkörper sind zueinander verstell- bzw. verschwenkbar, was eine Dosierung des aufzutragenden Mediums über die Spaltbreite ermöglicht. Die mit der zu beschichtenden Bahn in Gleitkontakt stehenden Endbereiche der Düsenkörper sind unterschiedlich gerundet geformt und bilden dem Prinzip nach - in Transportrichtung des zu beschichtenden Materials - zwei negativ angestellte Rakel. DE 10 2007 056 121 B3 shows a slot die, which is likewise formed by two nozzle bodies. The nozzle bodies are mutually adjustable or pivotable, which allows a dosage of the medium to be applied over the gap width. The end regions of the nozzle bodies which are in sliding contact with the web to be coated have differently rounded shapes and form, on principle, two doctor blades applied in the direction of transport of the material to be coated.
Die Auftragvorrichtung für Heißkleber nach der EP 1 752 506 AI verwendet eine Breitschlitzdüse, bei der der Auftragbereich (Spalt) von zwei Düsenkörpern begrenzt wird. Die mit dem zu beschichtenden Material in Kontakt stehenden Endbereiche der Düsenkörper sind flächig ausgebildet und bewirken eine gewisse Kompression des Materials im Beschichtungsbereich. Die entsprechende Gegen- druckkraft erfährt das zu beschichtende Material durch eine Gleitunterlage bzw. eine drehende Transportrolle. The application device for hot glue according to EP 1 752 506 A1 uses a slot die in which the application area (gap) of two nozzle bodies is limited. The end regions of the nozzle bodies that are in contact with the material to be coated are formed flat and cause a certain compression of the material in the coating area. The corresponding counterpart compressive force experiences the material to be coated by a sliding pad or a rotating transport roller.
Die US 4,688,516 beschreibt eine Auftrageinheit mit einem Mehrkammersystem und zwei dosierbar einstellbaren Rakeln. Das aufzutragende Medium wird in einer ersten Kammer zu-, überschüssiges Material in einer nachlaufenden Kammer aufgefangen und wieder rückgeführt. Der Aufbau ist komplex und ferner ist auch keine beliebige Einbauposition möglich. US Pat. No. 4,688,516 describes an application unit with a multi-chamber system and two meterably adjustable doctor blades. The medium to be applied is collected in a first chamber, excess material in a trailing chamber and returned. The structure is complex and also no installation position is possible.
Die Erfindung geht somit aus von einer Vorrichtung zum Auftragen von fluiden Medien auf bahnförmig bewegtes Material, insbesondere zum Auftragen von Heißkleber auf ein textiles Material, und insbesondere zum Verfestigen eines Teppichrückens oder eines Kunstrasens, bestehend aus einem sich quer zur Bahnrichtung erstreckenden spaltförmigen Auftragbereich für das Medium, welcher in Transportrichtung der Bahn von einer nachlaufenden und der Oberfläche der Bahn zugewandten Rakel begrenzt wird. The invention is therefore based on a device for applying fluid media to web-like material, in particular for applying hot melt to a textile material, and in particular for solidifying a carpet backing or an artificial turf, consisting of a transversely extending to the web direction gap-shaped application area for the Medium, which is limited in the transport direction of the web by a trailing and the surface of the web facing blade.
Aufgabe der vorliegenden Erfindung ist es, eine derartige Vorrichtung weiter zu entwickeln und insbesondere die Qualität des Auftrages, der Beschichtung zu verbessern. Object of the present invention is to further develop such a device and in particular to improve the quality of the order, the coating.
Gelöst wird diese Aufgabe durch die Merkmale des Vorrichtungsanspruches. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen. This problem is solved by the features of the device claim. Advantageous developments of the invention will become apparent from the dependent claims.
Gemäß der Erfindung ist vorgesehen, dass in Transportrichtung der Bahn der Rakel eine mit dem aufgetragenen Medium zusammenwirkende Glättkontur nachgeordnet ist. According to the invention, it is provided that, in the transport direction of the web of the doctor blade, a smoothing contour cooperating with the applied medium is arranged downstream.
Der als Breitschlitzdüse ausgebildete Auftragbereich für das Medium wird durch eine nachlaufende Rakel begrenzt, welche gegenüber der bewegten Bahnoberfläche positiv oder negativ angestellt sein kann. Die Rakelkante streicht hierbei den aufzutragenden Kleber über die Bahnoberfläche, das zu beschichtende Material, und dosiert so die Auftragmenge. Die erfindungsgemäß vorgesehene und der Rakel nachgeordnete Glättkontur verteilt, glättet und verarbeitet den aufgebrachten Kleber zusätzlich. Inhomogenitäten in der Auftragstärke werden vergleichmäßigt, die Penetration des Klebers in die Struktur des Bahnmaterials verbessert. The application area for the medium, designed as a slot die, is delimited by a trailing doctor blade, which can be made positive or negative with respect to the moving web surface. The doctor edge sweeps the adhesive to be applied over the web surface, the material to be coated, and thus doses the order quantity. The inventively provided and the doctor blade downstream Smoothing distributed, smooths and processes the applied adhesive in addition. Inhomogeneities in order strength evened out, improves the penetration of the adhesive into the structure of the web material.
Als weiterbildende Maßnahmen kann somit vorgesehen sein, dass: As further education measures it can thus be provided that:
- die Glättkontur Teil einer parallel zur Rakel verlaufenden Leiste ist. - The smoothing contour is part of a running parallel to the doctor bar.
- die Glättkontur ein Teil einer an der Rakel angeformten Struktur ist. - The smoothing contour is part of a structure formed on the doctor blade.
- die Glättkontur Teil eines die Rakel tragenden Gehäuses ist. - The smoothing contour is part of a squeegee-bearing housing.
- die Glättkontur durch Einstellmittel gegenüber der vorgeordneten Rakel und somit gegenüber der Oberfläche der Ware einstellbar ist. - The smoothing contour is adjustable by adjusting means with respect to the upstream doctor and thus with respect to the surface of the goods.
- der Abstand der Glättkontur zur Warenoberfläche einstellbar ist. - The distance of the smoothing contour is adjustable to the fabric surface.
- die Winkelstellung der Glättkontur zur Warenoberfläche einstellbar ist. - The angular position of the smoothing contour is adjustable to the fabric surface.
- der Glättkontur eine Heizeinrichtung zugeordnet ist. - The smoothing contour is associated with a heating device.
- die Glättkontur eine Beschichtung aufweist bzw. aus einem Material besteht, welches von dem Heißkleber im geschmolzenen Zustand nur schwer benetzbar ist. - The smoothing contour has a coating or consists of a material which is difficult to be wetted by the hot melt adhesive in the molten state.
Sehr vorteilhaft gestaltet sich die Erfindung, wenn die Glättkontur mit einem vom Heißkleber nur schwer benetzbaren Beschichtung versehen ist. Die als Leiste ausgebildete Glättkontur kann auch aus einem entsprechenden Material gefertigt sein. The invention is very advantageous if the smoothing contour is provided with a coating which is difficult to wet by the hot melt adhesive. The trained as a strip smoothing contour can also be made of a corresponding material.
Eine weitere vorteilhafte Weiterbildung der Erfindung sieht vor, dass die Glättkontur mit einer Heizvorrichtung vorgesehen ist, durch welche die Glättkontur (deren mit dem Heißkleber in Kontakt kommende Oberfläche) aufgeheizt werden kann. Bei der Heizeinrichtung handelt es sich bspw. um eine elektrisch geregelte Steuerung, welche über in der Leiste der Glättkontur integrierte Heizwicklungen die Erwärmung bewirkt. Vorzugsweise wird hierbei eine Tempe- ratur gewählt, welche der Schmelztemperatur des Heizklebers entspricht. Hierdurch werden Anhaftungen von Heißkleber am Körper der Glättkontur vermieden, ferner verbessert sich die Glättwirkung sowie das Einarbeiten der Klebmasse in die Gewebestruktur der Ware. A further advantageous development of the invention provides that the smoothing contour is provided with a heating device, by means of which the smoothing contour (whose surface coming into contact with the hot-melt adhesive) can be heated. The heating device is, for example, an electrically controlled controller which causes heating via heating windings integrated in the strip of the smoothing contour. Preferably, a temperature of selected temperature, which corresponds to the melting temperature of the heating adhesive. As a result, adhesions of hot glue are avoided on the body of the smoothing contour, also improves the smoothing effect and the incorporation of the adhesive in the fabric structure of the goods.
Bevorzugt ist die Glättkontur, die entsprechende Leiste bzw. deren Halterung mit einer VerStelleinrichtung versehen, so dass die Glättkontur gegenüber der vorgeordneten Rakel und damit auch gegenüber der Ware (Oberfläche der Kleberschicht) entsprechend den Gegebenheiten einstellbar ist. Ein stärkeres Anstellen gegen die Ware bewirkt so eine stärkere Einreibwirkung des Heißklebers in die Gewebestruktur. Ein zu starkes Anstellen ist wiederum zu vermeiden, da sonst durch die Glättkontur ein Abrakeln des Heißklebers erfolgt. Durch eine entsprechend gestaltete Stellvorrichtung kann nicht nur der Abstand der Glättkontur zur Oberfläche der Ware sondern auch die Stellung, Neigung der Glättkontur verändert werden. Preferably, the smoothing contour, the corresponding bar or its holder is provided with an adjusting device, so that the smoothing contour with respect to the upstream doctor and thus also with respect to the goods (surface of the adhesive layer) is adjustable according to the circumstances. A stronger pitch against the product thus causes a stronger Einreibwirkung the hot melt in the fabric structure. Too much hiring is again to avoid, otherwise there is a scraping of the hot melt adhesive through the smoothing contour. By an appropriately designed adjusting device, not only the distance of the smoothing contour to the surface of the product but also the position, inclination of the smoothing contour can be changed.
Des Weiteren erfolgt die Erläuterung eines Ausführungsbeispieles anhand der Zeichnung. Furthermore, the explanation of an embodiment with reference to the drawing.
Die Figur 1 zeigt eine Ausführungsform der Erfindung. Ein bahnförmiger Teppich 1 bzw. Kunstrasen wird mit der nach unten weisenden Florseite 2 an einer sich über die Breite der Materialbahn erstreckenden Breitschlitzdüse 3 vorbeigeführt. Die Bewegungsrichtung der Materialbahn 1 ist mit dem Pfeil angedeutet. Über die Breitschlitzdüse 3 erfolgt ein Auftrag von durch Erwärmung verflüssigtem Heißkleber 4 auf der Rückseite der Ware. Durch den Heißkleber 4 werden nach dessen Erkalten die in den Rücken (das Gewebe) getufteten Polschlingen (Florseite 2) fixiert. FIG. 1 shows an embodiment of the invention. A web-like carpet 1 or artificial turf is guided with the downwardly facing pile side 2 at an over the width of the material web extending slot die 3. The direction of movement of the material web 1 is indicated by the arrow. About the slot die 3 is carried out an order of liquefied by heating hot melt adhesive 4 on the back of the product. By the hot melt adhesive 4, after being cooled down, the pile loops (pile side 2) tufted in the back (the fabric) are fixed.
Die Breitschlitzdüse 3 besteht aus einem als Hohlkörper und nach unten offenen ausgebildeten Gehäuse 5, welches im Inneren eine Kammer bildet und über nicht dargestellte Zuleitungen mit geschmolzenem Heißkleber 4 beaufschlagbar ist. An der Unterseite des Gehäuses 5 sind zwei Rakeln 6, 7 angeordnet, welche in einem Winkel zueinander zulaufen und deren zur Ware 1 gewandten Enden einen Dosierspalt S bilden. Durch nicht dargestellte Mittel können die Rakeln 6, 7 zueinander eingestellt werden, was insgesamt eine Dosierbarkeit in Abhängigkeit der Viskosität des zu verarbeitenden Heißklebers 4 und der auf der Ware 1 zu erzielenden Auftragmenge (Flächengewicht). Bezogen auf die Transportrichtung der Ware 1 ist die eine Rakel 6 positiv, die weitere Rakel 7 negativ angestellt. Letztlich ist auch die Breitschlitzdüse 3 als ganzes gegenüber der Ware 1 einstellbar, d.h. der Druck der Düse 3 gegenüber der sich bewegenden Ware 1. Je nach Anwendungsfall kann die Ware 1 hierbei über einen rotierenden Zylinder oder über zwei beabstandet angeordnete Rollen gespannt geführt laufen. The slot die 3 consists of a housing 5 designed as a hollow body and open at the bottom, which forms a chamber in the interior and can be acted upon with molten hot-melt adhesive 4 via supply lines (not shown). On the underside of the housing 5, two doctor blades 6, 7 are arranged, which run at an angle to each other and their ends facing the goods 1 form a metering gap S. By means not shown, the doctor blades 6, 7 can be adjusted to each other, which in total a meterability in dependence of Viscosity of the hot-melt adhesive 4 to be processed and the order quantity to be achieved on the product 1 (basis weight). Based on the transport direction of the product 1, the one doctor 6 is positive, the other squeegee 7 employed negative. Finally, the slot die 3 as a whole with respect to the product 1 is adjustable, ie the pressure of the nozzle 3 with respect to the moving goods 1. Depending on the application, the product 1 can be guided here stretched over a rotating cylinder or two rollers arranged at a distance.
Der in Transportrichtung der Ware 1 nachlaufenden und negativ angestellten Rakel 7 ist eine Glättkontur 8 nachgeordnet, welche in dem hier gezeigten Ausführungsbeispiel als eine nach unten halbrund gestaltete Leiste ausgebildet ist, die parallel zur Breitschlitzdüse 3 verläuft und sich über deren Länge erstreckt. Diese Leiste 8 ist über nicht dargestellte Befestigungen mit der Breitschlitzdüse 3 verbunden und insbesondere über Einstellmittel gegenüber der Breitschlitzdüse 3 auch einstellbar. The trailing in the transport direction of the product 1 and negatively employed squeegee 7 is arranged downstream of a smoothing contour 8, which is formed in the embodiment shown here as a down semicircular shaped bar, which is parallel to the slot die 3 and extends over the length thereof. This strip 8 is connected via fasteners, not shown, with the slot die 3 and in particular also adjustable by means of adjustment with respect to the slot die 3.
Durch die Glättkontur 8 wird der durch die Rakeln 6, 7 dosiert auf die Ware 1 aufgebrachte Heißkleberfilm 4 zusätzlich gleichmäßig verteilt, geglättet. Insbe¬ sondere werden so Wellen und Rillen vermieden. Ebenfalls werden sich evtl. bildende Blasen zerstört und letztlich ergibt sich bei entsprechender Anstellung der Glättkontur 8 gegenüber der Ware ein verbessertes Eindringen des Heißklebers 4 in die Gewebestruktur der Ware 1. By the smoothing contour 8 of the metered by the doctor blades 6, 7 applied to the goods 1 hot melt adhesive film 4 is additionally evenly distributed, smoothed. In particular ¬ special so waves and grooves are avoided. Also, possibly forming bubbles are destroyed and ultimately results in a corresponding employment of the smoothing contour 8 against the goods an improved penetration of the hot melt adhesive 4 in the fabric structure of the product. 1
Bezugszeichenliste: LIST OF REFERENCE NUMBERS
1 Ware, Bahn, Teppich, Kunstrasen1 goods, train, carpet, artificial turf
2 Florseite, Polschlingen 2 pile side, Polschlingen
3 Düse, Breistschlltzdüse  3 nozzle, slurry nozzle
4 Kleber, Heißkleber, Heißkleberfilm 4 glue, hot glue, hot glue film
5 Gehäuse 5 housing
6 Rakel  6 squeegee
7 Rakel  7 squeegee
8 Glättkontur, Leiste  8 smoothing contour, bar
S Dosierspalt, Spalt S metering gap, gap

Claims

Ansprüche claims
1. Vorrichtung zum Auftragen von fluiden Medien auf bahnförmig bewegtes Material, insbesondere zum Auftragen von Heißkleber auf ein textiles Material, und insbesondere zum Verfestigen eines Teppichrückens oder eines Kunstrasens, bestehend aus einem sich quer zur Bahnrichtung erstreckenden spaltförmigen Auftragbereich für das Medium, welcher in Transportrichtung der Bahn von einer nachlaufenden und der Oberfläche der Bahn zugewandten Rakel begrenzt wird, dadurch gekennzeichnet, dass in Transportrichtung der Bahn (1) der Rakel (7) eine mit dem aufgetragenen Medium (4) zusammenwirkende Glättkontur (8) nachgeordnet ist. 1. A device for applying fluid media to web-like material, in particular for applying hot melt to a textile material, and in particular for solidifying a carpet backing or an artificial turf, consisting of a transverse to the web direction extending gap-shaped application area for the medium, which in the transport direction the web of a trailing and the surface of the web facing doctor blade is limited, characterized in that in the transport direction of the web (1) of the doctor blade (7) with the applied medium (4) cooperating smoothing contour (8) is arranged downstream.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Glättkontur (8) Teil einer parallel zur Rakel (7) verlaufenden Leiste ist. 2. Apparatus according to claim 1, characterized in that the smoothing contour (8) is part of a parallel to the doctor blade (7) extending bar.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Glättkontur (8) ein Teil einer an der Rakel (7) angeformten Struktur ist. 3. A device according to claim 1, characterized in that the smoothing contour (8) is a part of a squeegee (7) molded structure.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Glättkontur (8) Teil eines die Rakel (7) tragenden Gehäuses (5) ist. 4. Apparatus according to claim 1, characterized in that the smoothing contour (8) is part of a squeegee (7) carrying the housing (5).
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Glättkontur (8) durch Einstellmittel gegenüber der ihr vorgeordneten Rakel (7) und somit gegenüber der Oberfläche der Ware (1) einstellbar ist. 5. The device according to claim 1, characterized in that the smoothing contour (8) by adjusting means relative to its upstream squeegee (7) and thus with respect to the surface of the product (1) is adjustable.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Abstand der Glättkontur (8) zur Warenoberfläche (1) einstellbar ist. 6. Apparatus according to claim 5, characterized in that the distance of the smoothing contour (8) to the goods surface (1) is adjustable.
7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Winkel- Stellung der Glättkontur (8) zur Warenoberfläche (1) einstellbar ist. 7. Device according to claim 5, characterized in that the angular Position of the smoothing contour (8) to the goods surface (1) is adjustable.
8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Glättkontur (8) eine Heizeinrichtung zugeordnet ist. 8. The device according to claim 1, characterized in that the smoothing contour (8) is associated with a heating device.
9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Glättkontur (8) eine Beschichtung aufweist bzw. aus einem Material besteht, welches von dem Heißkleber (4) im geschmolzenen Zustand nur schwer benetzbar ist. 9. The device according to claim 1, characterized in that the smoothing contour (8) has a coating or consists of a material which is difficult to be wetted by the hot melt adhesive (4) in the molten state.
EP11741161.1A 2010-07-20 2011-07-20 Device for applying fluid media Withdrawn EP2596165A1 (en)

Applications Claiming Priority (2)

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DE102010031824A DE102010031824A1 (en) 2010-07-20 2010-07-20 Device for applying fluid media
PCT/EP2011/062446 WO2012010629A1 (en) 2010-07-20 2011-07-20 Device for applying fluid media

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EP (1) EP2596165A1 (en)
DE (1) DE102010031824A1 (en)
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DE102010031824A1 (en) 2012-01-26
US20130112136A1 (en) 2013-05-09

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