EP2418316A1 - Method for drying with infrared radiation and device for executing the method - Google Patents

Method for drying with infrared radiation and device for executing the method Download PDF

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Publication number
EP2418316A1
EP2418316A1 EP11005621A EP11005621A EP2418316A1 EP 2418316 A1 EP2418316 A1 EP 2418316A1 EP 11005621 A EP11005621 A EP 11005621A EP 11005621 A EP11005621 A EP 11005621A EP 2418316 A1 EP2418316 A1 EP 2418316A1
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Prior art keywords
radiation
drying
radiator
objects
range
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EP11005621A
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German (de)
French (fr)
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EP2418316A8 (en
EP2418316B1 (en
Inventor
Alfred Schott
Andreas Lange
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BurnusHychem GmbH
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BurnusHychem GmbH
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F73/00—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam 
    • D06F73/02—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam  having one or more treatment chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements

Definitions

  • the invention relates to a generic method for wrinkle-free and wrinkle-free smoothing and drying of articles, namely flat textiles and textile moldings or made-up goods according to the preamble of claim 1 and an apparatus for performing the method.
  • All objects to be dried have in common that they must be delivered dry and wrinkle and wrinkle-free.
  • the parts are exposed to a temperature load of 60-80 ° C and mechanical stress.
  • temperatures greater than 50 ° C while the polyester fiber is plasticized and deformed by the washing mechanics.
  • the resulting tensions and wrinkles are sometimes "frozen" in the subsequent rinsing process with low water temperatures and produce significant wrinkles or creases in the objects.
  • these systems consist of several consecutive heating zones, which are continuously passed through by the articles, preferably molded parts.
  • the drying and smoothing of the moldings is done by means of hot air, supported by the so-called spray steam and a special air flow with high flow velocities parallel to the aligned parts.
  • the total energy requirements of these finishers are derived from the electrical performance of the recirculation system, the steam generation for the spray steam and the hot air generation by means of direct gas heating.
  • the biggest part of this is the provision of the spray steam (smoothing and improved heat transfer).
  • the steam is usually provided centrally in a boiler house by means of a steam boiler and steam pipes. Such a concept for steam supply and additional systems for water supply in the boiler house requires considerable space and leads to carbon dioxide emissions.
  • the present invention has for its object to provide a simpler and cheaper and additionally reduced carbon dioxide process for drying and smoothing of textile articles and a space-saving device for performing the method.
  • This object is achieved in a generic method according to the preamble of claim 1 according to the invention by its characterizing features, ie the fact that the objects are moved through at least one chamber and exposed to IR radiation in the wavelength range of 800 to 5,000 nm for 10 to 150 s , Advantageous embodiments and further developments of the invention are characterized in the subclaims.
  • the invention has the main idea that textile articles for accelerated heating are irradiated with electromagnetic radiation in the range of the infrared (IR) - in particular in the wavelength range between 800 to 5000 nm-, as due to lying in their spectrum absorption bands of water effectively dewatering of the textile takes place.
  • IR infrared
  • the absorption of the penetrating short-wave IR radiation components in the interior of the fiber results in spontaneous heating and homogeneous plasticization. This eliminates or reduces "frozen” wrinkles, tensions or wrinkles, and returns the fiber to its original shape.
  • the IR emitters only have to be in operation, even if really textile items in the dryer available.
  • the spotlights can be switched on or off within seconds and are particularly suitable for drying processes with short cycle times.
  • the usual so-called lead times in the prior art can be dispensed with, so that such an IR emitter has a smaller energy requirement than the usual steam and gas finisher.
  • the IR drying also serves for quick drying of textiles. While in the prior art, the throughput time is between 300 - 600 s, treatment times between 10 - 150 s can be achieved using the IR drying.
  • the particular IR radiation source avoids the generation of emissions and immissions, e.g. Feinstruß and thus leads to an improved finish quality, especially in white blended fabric textiles. Any maintenance is also eliminated.
  • the IR emitter which is preferably designed as a module, meets the highest safety requirements. Surprisingly, it is possible to dispense with the smoothing spray steam customary in the prior art with the IR radiator, since the smoothing can be attributed to the particular heating and dewatering of the textile fiber when using the short-wave and medium-wave IR radiation. While in the prior art, the polyester fiber heating by heat transfer using saturated steam or hot air takes place, the entire fiber volume is heated simultaneously and homogeneously by the penetrating, absorbed IR radiation in the IR technique. The efficiency of energy use is thus significantly improved.
  • the irradiation of the objects takes place with a power density on the textile surface of preferably 5 to 50 kW / m 2 in a multi-stage process.
  • two successive stations are provided in the form of modules, first for rapid predrying with 10 to 60 kW / m 2 and opposite IR emitters in the medium wave range and then with reduced power in the range of 5 - 20 kW / m 2 and opposite modules is dried in the short-wave range in order to achieve a sufficient smoothing of the textile.
  • the two different IR radiation sources can also be operated in reverse order.
  • Single-stage processes can be represented by the integrated installation of short- and medium-wave IR emitters in one module.
  • the total drying time is about 10 to 150 seconds with the invention and should be supported by an intensive air flow with unheated air using fans.
  • the radiator axis spacing should be 50 to 300 mm, preferably approximately 100 mm, in order to ensure sufficient heating of the textile article.
  • the size of the heating field was defined as approximately 1,500 to 1,800 mm in height and approximately 800 mm in width, resulting in a total connected load of approximately 57.6 kW.
  • Single parallel IR emitters can in Depending on the basis weight of the fabric or the size of the moldings to be switched on or off.
  • the surface temperature of the textile is set to a value in the range between 40 and 180 ° C, depending on the basis weight of the fabric, in order to avoid overdrying of the textile.
  • a value in the range between 40 and 180 ° C depending on the basis weight of the fabric, in order to avoid overdrying of the textile.
  • commercially available pyrometers are used. In doing so, it is necessary to measure the surface temperature at different locations of the article, e.g. To measure molded part and use this as a reference variable for power control of the IR emitters.
  • a freely selectable limit value must be programmable in the controller for each measuring point.
  • the preferred source of radiation for drying can be the carbon IR emitter, which generates medium-wave radiation in the range from 1400 to 3500 nm with very short reaction times and has a high area efficiency with high efficiency.
  • a preferred source of radiation for smoothing the short-wave twin tube radiator in the range 800 to 1400 nm is called, which combines a rapid heating at high penetration depth in the textile.
  • the infrared technique used in the invention has the advantage that heat for drying and "wrinkling" of the textile article only goes where it is needed, with the optimum wavelength for the textile product and in time with the entire drying process a commercial laundry.
  • heat for drying and "wrinkling" of the textile article only goes where it is needed, with the optimum wavelength for the textile product and in time with the entire drying process a commercial laundry.

Abstract

The method involves moving goods by a chamber, and suspending infrared (IR) radiation in a wavelength range from 800 to 5000 nm for 10 to 150 s. The IR radiation goods are suspended with power density with a value between 1 to 80 kW per meter. Surface temperature of the goods is adjusted based on a range between 40 to 180 degree Celsius, where heating field size of the IR radiation of an IR emitter is about 1500-1800 mm height and 700 to 1,000 mm width. An IR radiator is formed as a carboxylic-IR radiator with a medium wave radiation in a range of 1400-3500 nm. An independent claim is also included for a device for wrinkle-and wrinkle-free smoothing and drying goods.

Description

Die Erfindung betrifft ein gattungsgemässes Verfahren zum falten- und knitterfreien Glätten und Trocknen von Gegenständern, nämlich flächigen Textilien und textilen Formteilen oder konfektionierter Ware nach dem Oberbegriff des Anspruchs 1 sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a generic method for wrinkle-free and wrinkle-free smoothing and drying of articles, namely flat textiles and textile moldings or made-up goods according to the preamble of claim 1 and an apparatus for performing the method.

Der Markt für die textile Dienstleistung "Berufskleidungsleasing BKL" erfährt seit Jahren kontinuierlich hohe Zuwachsraten. Textile Formteile wie Jacken, Kittel, Hosen etc. für die unterschiedlichsten Berufsgruppen stellen dabei den Hauptanteil. Täglich werden in Deutschland ca. 2 Mio. Teile bearbeitet. Das Spektrum reicht beispielsweise von der OP-Bekleidung aus Kliniken oder "BKL-Blauzeug" aus der Kfz-Werkstatt bis zur Reinraumkleidung für Chiphersteller.The market for the textile service "Berufskleidungungsleasing BKL" has been experiencing consistently high growth rates for many years. Textile moldings such as jackets, smocks, trousers, etc. for the most diverse occupational groups make up the main part. Approximately 2 million parts are processed in Germany every day. The spectrum ranges, for example, from surgical clothing from clinics or "BKL-Blauzeug" from the automotive workshop to clean room clothing for chip manufacturers.

Die gebrauchten, verschmutzten BKL-Teile werden dabei von Wäschereien regelmäßig gegen gewaschene und aufbereitete Teile (z.B. Reparatur) beim Kunden vor Ort ausgetauscht. Als Gewebe für diese Teile hat sich ein Gemisch aus Baumwolle und Polyester in unterschiedlichen Mengen-Anteilen durchgesetzt. Für Spezialanwendungen kommt auch reines Polyester-Gewebe zum Einsatz (z.B. Reinraumkleidung).The used, soiled BKL parts are doing this by laundries regularly against washed and prepared parts (eg repair) at the customer Place exchanged. As a fabric for these parts, a mixture of cotton and polyester in different proportions has prevailed. For special applications, pure polyester fabric is also used (eg cleanroom clothing).

Allen zu trocknenden Gegenständen ist gemeinsam, das sie trocken sowie falten- und knitterfrei ausgeliefert werden müssen. Während des Waschprozesses sind die Teile einer Temperaturbelastung von 60-80°C und einer mechanischen Belastung ausgesetzt. Bei Temperaturen grösser 50°C wird dabei die Polyesterfaser plastifiziert und durch die Waschmechanik verformt. Die dadurch entstehenden Spannungen und Knitter werden beim anschließenden Spülprozess mit niedrigen Wassertemperaturen teilweise "eingefroren" und erzeugen deutliche Falten bzw. Knitter bei den Gegenständen.All objects to be dried have in common that they must be delivered dry and wrinkle and wrinkle-free. During the washing process, the parts are exposed to a temperature load of 60-80 ° C and mechanical stress. At temperatures greater than 50 ° C while the polyester fiber is plasticized and deformed by the washing mechanics. The resulting tensions and wrinkles are sometimes "frozen" in the subsequent rinsing process with low water temperatures and produce significant wrinkles or creases in the objects.

Diese Knitterbildung wird mittels einer Skala nach Monsanto quantifiziert (AATCC 124). Nur Formteile mit einer Knitterstufe grösser 3 werden ausgeliefert (Stufe 5: knitterfrei).This creasing is quantified using a Monsanto scale (AATCC 124). Only molded parts with a crinkle rating greater than 3 will be delivered (level 5: wrinkle-free).

Die Trocknung und Knitterbeseitigung geschieht nach dem Stand der Technik in sogenannten "Tunnelfinishern" ( EP 1 889 968 A2 , EP 1 889 969 A2 und DE 20 2009 005 748 U1 ). Bei diesen üblichen Tunnelfinishern beträgt dabei die Durchlaufzeit der zu trocknenden Gegenstände zwischen 300 bis 600 s. Es entsteht überdies Feinstruß (durch den Gasbrenner in der gasbeheizten Ausführung), ganz abgesehen von der üblichen Aufwirbelung von Staubpartikel. Ein weiterer Nachteil des derzeitigen Stands der Technik -insbesondere der zunehmend etablierten Gasfinisherist der relativ hohe Wartungsaufwand zur Reinigung und Pflege der Gasbrenner (üblicherweise werden bei einem Drei-Modul Finisher auch drei Gasbrenner benötigt), wobei bei Gasfinishern zusätzlich die Installation einer Sprinkleranlage empfohlen wird.The drying and wrinkle removal happens according to the state of the art in so-called "tunnel finishers" ( EP 1 889 968 A2 . EP 1 889 969 A2 and DE 20 2009 005 748 U1 ). In these conventional tunnel finishers, the throughput time of the objects to be dried is between 300 and 600 s. It also creates fine structure (by the gas burner in the gas-heated version), quite apart from the usual Aufwirbelung of dust particles. Another disadvantage of the current state of the art - especially the increasingly established gas finisher the relatively high maintenance required to clean and maintain the gas burners (typically, three gas burners are required for a three-module finisher), with gas refiners also recommending the installation of a sprinkler system.

Diese Anlagen bestehen je nach Stundenleistungen aus mehreren, hintereinanderliegenden Heizzonen, die von den Gegenständen, vorzugsweise Formteilen kontinuierlich durchlaufen werden. Die Trocknung und Glättung der Formteile geschieht mittels Heißluft, unterstützt vom sogenanntem Sprühdampf und einer speziellen Luftführung mit hohen Strömungsgeschwindigkeiten parallel zu den ausgerichteten Teilen.Depending on the hourly output, these systems consist of several consecutive heating zones, which are continuously passed through by the articles, preferably molded parts. The drying and smoothing of the moldings is done by means of hot air, supported by the so-called spray steam and a special air flow with high flow velocities parallel to the aligned parts.

Der Gesamtenergiebedarf dieser Finisher ergibt sich aus der elektrischen Leistung der Umluftanlage, der Dampferzeugung für den Sprühdampf und der Heisslufterzeugung mittels direkter Gasbeheizung. Den größten Anteil hat dabei die Bereitstellung des Sprühdampfes (Glättung und verbesserte Wärmeübertragung). Der Dampf wird üblicherweise zentral in einem sogenannten Kesselhaus mittels Dampfkessel und Dampfleitungen zur Verfügung gestellt. Ein derartiges Konzept zur Dampfversorgung und zusätzlichen Anlagen zur Wasserversorgung in dem Kesselhaus erfordert erheblichen Platzbedarf und führt zu Kohlendioxid-Emisionen.The total energy requirements of these finishers are derived from the electrical performance of the recirculation system, the steam generation for the spray steam and the hot air generation by means of direct gas heating. The biggest part of this is the provision of the spray steam (smoothing and improved heat transfer). The steam is usually provided centrally in a boiler house by means of a steam boiler and steam pipes. Such a concept for steam supply and additional systems for water supply in the boiler house requires considerable space and leads to carbon dioxide emissions.

Ausserdem benötigt man üblicherweise sog. Vorlaufzeiten zur Erwärmung des Dampfkessels zur Erzeugung des Heißdampfs vor dem eigentlichen Arbeitsbeginn. Darüber hinaus entstehen praxisübliche Wärmeverluste, die beispielsweise während des Transports von Heißdampf entstehen.In addition, one usually requires so-called. Lead times for heating the steam boiler to produce the superheated steam before the actual start of work. In addition, practice-typical heat losses occur, for example, during transport of superheated steam.

Die vorliegende Erfindung liegt die Aufgabe zugrunde, ein einfacheres und billigeres sowie zusätzlich kohlendioxidreduziertes Verfahren zur Trocknung und Glättung von textilen Gegenständen sowie eine platzsparende Vorrichtung zur Durchführung des Verfahrens vorzuschlagen. Diese Aufgabe wird bei einem gattungsgemässen Verfahren nach dem Oberbegriff des Anspruchs 1 erfindungsgemäss durch dessen kennzeichnende Merkmale, also dadurch gelöst, dass die Gegenstände durch zumindest eine Kammer bewegt und einer IR-Strahlung im Wellenlängenbereich von 800 bis 5.000 nm für 10 bis 150 s ausgesetzt werden. Zweckmässige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.The present invention has for its object to provide a simpler and cheaper and additionally reduced carbon dioxide process for drying and smoothing of textile articles and a space-saving device for performing the method. This object is achieved in a generic method according to the preamble of claim 1 according to the invention by its characterizing features, ie the fact that the objects are moved through at least one chamber and exposed to IR radiation in the wavelength range of 800 to 5,000 nm for 10 to 150 s , Advantageous embodiments and further developments of the invention are characterized in the subclaims.

Die Erfindung trägt der Hauptgedanke, dass textile Gegenstände zur beschleunigten Erwärmung mit elektromagnetischer Strahlung im Bereich des Infrarot (IR) -insbesondere im Wellenlängebereich zwischen 800 bis 5.000 nm- bestrahlt werden, da wegen der in ihrem Spektrum liegenden Absorptionsbanden des Wassers in wirksamer Weise eine Entwässerung des Textils stattfindet.The invention has the main idea that textile articles for accelerated heating are irradiated with electromagnetic radiation in the range of the infrared (IR) - in particular in the wavelength range between 800 to 5000 nm-, as due to lying in their spectrum absorption bands of water effectively dewatering of the textile takes place.

Zusätzlich erfolgt durch die Absorption der eindringenden kurzwelligen IR-Strahlungsanteile im Innern der Faser eine spontane Aufheizung und homogene Plastifizierung. Dadurch werden "eingefrorene" Falten, Spannungen oder Knitter beseitigt bzw. abgebaut, und die Faser stellt sich in ihre ursprüngliche Form zurück.In addition, the absorption of the penetrating short-wave IR radiation components in the interior of the fiber results in spontaneous heating and homogeneous plasticization. This eliminates or reduces "frozen" wrinkles, tensions or wrinkles, and returns the fiber to its original shape.

Gegenüber dem Stand der Technik wird kein Sprühdampf mehr benötigt (Dampffreie Wäscherei) und eine Reduzierung des Energieeinsatzes um 5 bis 25% erreicht.Compared to the state of the art, no more spray steam is needed (steam-free laundry) and a reduction of energy use by 5 to 25% reached.

Als besonderes Merkmal der IR-Strahler gegenüber dem derzeitigen Stand der Technik unter Verwendung eines dampf- oder gasbeheizten Tunnelfinishers mit einem Dampf- und Heißluftgemisch kann genannt werden, dass die IR-Strahler nur dann in Betrieb sein müssen, wenn auch wirklich textile Gegenstände im Trockner vorhanden sind. Die Strahler lassen sich innerhalb von Sekunden an- oder abschalten und sind insbesondere für Trocknungsprozesse mit kurzen Taktzeiten geeignet. Auf die sonst üblichen sog. Vorlaufzeiten beim Stand der Technik kann verzichtet werden, so dass ein derartiger IR-Strahler einen kleineren Energiebedarf als die üblichen Dampf- und Gasfinisher aufweist.As a special feature of the IR emitter over the current state of the art using a steam- or gas-heated tunnel finisher with a steam and hot air mixture can be mentioned that the IR emitters only have to be in operation, even if really textile items in the dryer available. The spotlights can be switched on or off within seconds and are particularly suitable for drying processes with short cycle times. The usual so-called lead times in the prior art can be dispensed with, so that such an IR emitter has a smaller energy requirement than the usual steam and gas finisher.

Darüber hinaus werden Wärmeverluste wie beim Stand der Technik durch die Erfindung vermieden, was zu einer weiteren Energieeinsparung führt. Eine derartig hohe Flexibilität der Strahlungsquelle erlaubt beispielsweise auch eine vollständige Abschaltung der IR-Trocknungs-Vorrichtung in Pausenzeiten.In addition, heat losses are avoided as in the prior art by the invention, which leads to a further energy saving. Such a high flexibility of the radiation source allows, for example, a complete shutdown of the IR drying device during pauses.

Zusätzlich dient die IR-Trocknung auch zur Schnelltrocknung von Textilien. Während beim Stand der Technik die Durchlaufzeit zwischen 300 - 600 s liegt, können unter Anwendung der IR-Trocknung Behandlungszeiten zwischen 10 - 150 s erzielt werden.In addition, the IR drying also serves for quick drying of textiles. While in the prior art, the throughput time is between 300 - 600 s, treatment times between 10 - 150 s can be achieved using the IR drying.

Da im Gegensatz zum Stand der Technik die Formteile die Vorrichtung einzeln durchlaufen, kann praktisch auf jegliche individuelle Bearbeitungsbedingung des Formteiles (Flächengewicht; Faserzusammensetzung, Farbe, Qualitätsanforderungen etc.) eingegangen werden.Since, in contrast to the prior art, the molded parts pass through the device individually, virtually any individual machining condition of the molded article (basis weight, fiber composition, color, quality requirements, etc.) can be considered.

Ein wesentlicher Vorteil ist ferner, dass diese IR-Strahlungsquellen die Forderung nach der sog. "dampffreien Wäscherei" erfüllen und einen deutlich geringeren Platzbedarf aufgrund der reduzierten Baugröße benötigen. Diese platzsparende Ausführung der IR-Trocknung gegenüber den raumfüllenden Tunnelfinishern führt zu weiteren Einsparungen.A significant advantage is further that these IR radiation sources meet the demand for the so-called "steam-free laundry" and require a much smaller footprint due to the reduced size. This space-saving version of the IR drying compared to the room-filling tunnel finishers leads to further savings.

Zusätzlich vermeidet die besondere IR-Strahlungsquelle die Entstehung von Emissionen und Immisionen, z.B. Feinstruß und führt damit zu einer verbesserten Finishqualität, insbesondere bei weißen Mischgewebe-Textilien. Jeglicher Wartungsaufwand entfällt überdies.In addition, the particular IR radiation source avoids the generation of emissions and immissions, e.g. Feinstruß and thus leads to an improved finish quality, especially in white blended fabric textiles. Any maintenance is also eliminated.

Zusätzlich erfüllt der IR-Strahler, der vorugsweise als Modul ausgebildet ist, höchste Sicherheitsanforderungen. Überraschenderweise kann mit dem IR-Strahler auf den beim Stand der Technik üblichen glättenden Sprühdampf verzichtet werden, da die Glättung auf die besondere Aufheizung und Entwässerung der textilen Faser bei Anwendung der kurz- und mittelwelligen IR-Strahlung zurückgeführt werden kann. Während beim Stand der Technik die Polyester-Faser die Erwärmung durch Wärmeübertragung mittels Sattdamf bzw. Heissluft erfolgt, wird bei der IR-Technik das gesamte Faservolumen gleichzeitig und homogen durch die eindringende, absorbierte IR-Strahlung aufgeheizt. Der Wirkungsgrad des Energieeinsatzes wird damit wesentlich verbessert.In addition, the IR emitter, which is preferably designed as a module, meets the highest safety requirements. Surprisingly, it is possible to dispense with the smoothing spray steam customary in the prior art with the IR radiator, since the smoothing can be attributed to the particular heating and dewatering of the textile fiber when using the short-wave and medium-wave IR radiation. While in the prior art, the polyester fiber heating by heat transfer using saturated steam or hot air takes place, the entire fiber volume is heated simultaneously and homogeneously by the penetrating, absorbed IR radiation in the IR technique. The efficiency of energy use is thus significantly improved.

Der Verzicht auf den üblichen Sprühdampf hat die hohe Wirtschaftlichkeit der Verfahrenstechnik gegenüber dem Stand der Technik zur Folge.The absence of the usual spray steam has the high cost of the process technology over the prior art result.

Ein Beispiel der Erfindung ist nachfolgend angegeben: Die Bestrahlung der Gegenstände, die vorzugsweise mit ihrer grössten Fläche senkrecht zu der IR-Strahlung ausgerichtet sind, erfolgt mit einer Leistungsdichte auf der Textiloberfläche von bevorzugt 5 bis 50 kW/m2 in einem mehrstufigen Prozess. Hierbei sollen bevorzugt aber nicht notwendigerweise zwei aufeinanderfolgende Stationen in Form der Module vorgesehen werden, wobei zunächst zur schnellen Vortrocknung mit 10 bis 60 kW/m2 und sich gegenüberliegenden IR-Strahlern im mittelwelligen Bereich und anschließend mit reduzierter Leistung im Bereich von 5 - 20 kW/m2 und sich gegenüberliegenden Modulen im kurzwelligen Bereich getrocknet wird, um eine ausreichende Glättung des Textils zu erzielen. Je nach gualitätsanforderung können die beiden unterschiedlichen IR-Strahlungsquellen auch in umgekehrter Reihenfolge betrieben werden.An example of the invention is given below: The irradiation of the objects, which are preferably aligned with their largest surface perpendicular to the IR radiation, takes place with a power density on the textile surface of preferably 5 to 50 kW / m 2 in a multi-stage process. Here, but preferably not necessarily two successive stations are provided in the form of modules, first for rapid predrying with 10 to 60 kW / m 2 and opposite IR emitters in the medium wave range and then with reduced power in the range of 5 - 20 kW / m 2 and opposite modules is dried in the short-wave range in order to achieve a sufficient smoothing of the textile. Depending on the quality requirement, the two different IR radiation sources can also be operated in reverse order.

Einstufige Prozesse lassen sich durch integrierten Einbau von kurz- und mittelwelligen IR-Strahlern in einem Modul darstellen.Single-stage processes can be represented by the integrated installation of short- and medium-wave IR emitters in one module.

Die gesamte Trocknungszeit beträgt mit der Erfindung ca. 10 bis 150 sec und soll durch eine intensive Luftströmung mit nicht geheizter Luft unter Verwendung von Ventilatoren unterstützt werden.The total drying time is about 10 to 150 seconds with the invention and should be supported by an intensive air flow with unheated air using fans.

Bei der Auslegung der IR-Strahler sollte der Strahlerachsenabstand 50 bis 300 mm, bevorzugt ca. 100mm betragen, um eine ausreichende Erwärmung des textilen Gegenstandes zu gewährleisten. Als Heizfeldgröße wurde in der Höhe ca. 1.500 bis 1.800 mm und in der Breite ca. 800 mm definiert, woraus ein gesamter Anschlusswert von ca. 57,6 kW resultiert. Einzelne parallel angeordnete IR-Strahler können in Abhängigkeit des Flächengewichts des Gewebes bzw. der Größe der Formteile zu- oder abgeschaltet werden.When designing the IR radiators, the radiator axis spacing should be 50 to 300 mm, preferably approximately 100 mm, in order to ensure sufficient heating of the textile article. The size of the heating field was defined as approximately 1,500 to 1,800 mm in height and approximately 800 mm in width, resulting in a total connected load of approximately 57.6 kW. Single parallel IR emitters can in Depending on the basis weight of the fabric or the size of the moldings to be switched on or off.

Nach den derzeitigen Erkenntnissen wird die Oberflächentemperatur des Textils -in Abhängigkeit des Flächengewichts des Gewebes- auf einen Wert im Bereich zwischen 40 und 180 °C eingestellt, um eine Übertrocknung des Textils zu vermeiden. Zur Überwachung der Grenztemperaturen werden handelsübliche Pyrometer eingesetzt. Dabei ist es erforderlich, die Oberflächentemperatur an verschiedenen Stellen bzw. Zonen des Gegenstandes, z.B. Formteiles zu messen und diese als Führungsgröße zur Leistungsregelung der IR-Strahler zu nutzen. Zur Vermeidung von Übertrocknung und Schmelzschäden muss für jeden Messpunkt ein freiwählbarer Grenzwert in der Steuerung programmierbar sein.According to current knowledge, the surface temperature of the textile is set to a value in the range between 40 and 180 ° C, depending on the basis weight of the fabric, in order to avoid overdrying of the textile. To monitor the limit temperatures commercially available pyrometers are used. In doing so, it is necessary to measure the surface temperature at different locations of the article, e.g. To measure molded part and use this as a reference variable for power control of the IR emitters. To avoid overdrying and melting damage, a freely selectable limit value must be programmable in the controller for each measuring point.

Als bevorzugte Strahlungsquelle zur Trocknung kann der Carbon-IR-Strahler dienen, der mittelwellige Strahlung im Bereich von 1.400 bis 3.500 nm mit sehr kurzen Reaktionszeiten erzeugt und eine hohe Flächenleistung bei hohem Wirkungsgrad besitzt. Als bevorzugte Strahlungsquelle zur Glättung sei der kurzwellige Zwillingsrohrstrahler im Bereich 800 bis 1.400 nm genannt, der eine schnelle Aufheizung bei hoher Eindringtiefe in das Textil vereint.The preferred source of radiation for drying can be the carbon IR emitter, which generates medium-wave radiation in the range from 1400 to 3500 nm with very short reaction times and has a high area efficiency with high efficiency. As a preferred source of radiation for smoothing the short-wave twin tube radiator in the range 800 to 1400 nm is called, which combines a rapid heating at high penetration depth in the textile.

Zusammenfassend bietet also die bei der Erfindung eingesetzte Infrarot-Technik den Vorteil, dass Wärme zur Trocknung und "Entknitterung" des textilen Gegenstandes nur dort hingelangt, wo sie auch gebraucht wird, mit der optimalen Wellenlänge für das textile Produkt und im Takt mit dem gesamten Trocknungsprozess einer gewerblichen Wäscherei. Durch die Übertragung großer Energiemengen in kurzer Zeit wird dem Markt eine Schnelltrockniingsmethode von Textilien zur Verfügung gestellt. Durch die geringe Materialbelastung des Textils werden die Wirkungsgrade des Trocknungsprozesses erhöht, was letztendlich zu einer Energieeinsparung und zur Senkung der Betriebskosten beiträgt.In summary, therefore, the infrared technique used in the invention has the advantage that heat for drying and "wrinkling" of the textile article only goes where it is needed, with the optimum wavelength for the textile product and in time with the entire drying process a commercial laundry. By the transmission of large amounts of energy in a short time will provide the market with a quick-drying method of textiles. Due to the low material load of the textile, the efficiency of the drying process is increased, which ultimately contributes to energy savings and reduced operating costs.

Claims (12)

Verfahren zum falten- und knitterfreien Glätten und Trocknen von Gegenständen, nämlich flächigen Textilien und textilen Formteilen oder konfektionierter Ware, dadurch gekennzeichnet, das die Gegenstände durch zumindest eine Kammer bewegt und einer IR-Strahlung im Wellenlängenbereich von 800 bis 5.000 nm für 10 bis 150 s ausgesetzt werden.A method for wrinkle and wrinkle-free smoothing and drying of objects, namely flat textiles and textile moldings or made-up goods, characterized in that moves the objects through at least one chamber and an IR radiation in the wavelength range of 800 to 5,000 nm for 10 to 150 s get abandoned. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Gegenstände der IR-Strahlung mit einer Leistungsdichte mit einem Wert zwischen 1 bis 80 kW/m2 ausgesetzt werden.A method according to claim 1, characterized in that the objects of the IR radiation are exposed to a power density with a value between 1 to 80 kW / m 2 . Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gegenstände zunächst mit einer IR-Strahlung mit einer Leistungsdichte von 10 bis 60 kW/m2 vorgetrocknet werden.Method according to one of the preceding claims, characterized in that the articles are first predried with an IR radiation having a power density of 10 to 60 kW / m 2 . Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gegenstände anschliessend mit einer IR-Strahlung mit einer Leistungsdichte von 5 bis 20 kW/m2 endgetrocknet werden.Method according to one of the preceding claims, characterized in that the objects are then finally dried with an IR radiation having a power density of 5 to 20 kW / m 2 . Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Trocknen von einer nicht geheizten Luftströmung und ohne Sprühdampf unterstützt wird.A method according to claim 3 or 4, characterized in that the drying is supported by a non-heated air flow and without spray steam. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Oberflächentemperatur der Gegenstände auf einen Bereich zwischen 40 bis 180 °C eingestellt wird.Method according to one of the preceding claims, characterized in that the surface temperature of the objects is adjusted to a range between 40 to 180 ° C. Vorrichtung zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die IR-Strahlung von zumindest einem IR-Strahler mit einer Heizfeldgrösse von 1.500 bis 1.800 mm Höhe und 700 bis 1.000 mm Breite bereitgestellt wird.Device for carrying out the method according to one of the preceding claims, characterized in that the IR radiation is provided by at least one IR radiator with a heating field size of 1,500 to 1,800 mm in height and 700 to 1,000 mm in width. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der zumindest eine IR-Strahler eine Leistung von 40 bis 80 aufweist.Apparatus according to claim 7, characterized in that the at least one IR emitter has a power of 40 to 80. Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass der zumindest eine IR-Strahler ein Carbon-IR-Strahler mit der mittelwelligen Strahlung im Bereich von 1.400 bis 3.500 nm ist und dass der zumindest andere IR-Strahler ein IR-Strahler mit der kurzwelligen Strahlung im Bereich von 800 bis 1.400 nm ist.Apparatus according to claim 7 or 8, characterized in that the at least one IR radiator, a carbon-IR radiator with the medium-wave radiation in the range of 1,400 to 3,500 nm and that the at least other IR emitter is an IR emitter with the short-wave radiation in the range of 800 to 1,400 nm. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass einer der beiden IR-Strahler zum Endtrocknen und der andere zum Vortrocknen dient.Apparatus according to claim 9, characterized in that one of the two IR emitter serves for final drying and the other for pre-drying. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in der Vorrichtung zur Ausübung eines einstufigen Prozesses zumindest ein IR-Strahler zum Vortrocknen und zumindest ein IR-Strahler zum Endtrocknen nebeneinander in der einzigen Kammer angeordnet sind.Device according to one of the preceding claims, characterized in that in the apparatus for performing a single-stage process at least one IR radiator for pre-drying and at least one IR radiator for final drying are arranged side by side in the single chamber. Vorrichtung nach Anspruch 7 bis 10, dadurch gekennzeichnet, dass in der Vorrichtung zur Ausübung des Verfahrens zumindest ein IR-Strahler zum Vortrocknen und zumindest ein IR-Strahler zum Endtrocknen in zwei bezüglich der bewegten Gegenstände hintereinander angeordneten Kammern angeordnet sind und die erste Kammer der Vor- und die folgende Kammer der Endtrocknung dient.Apparatus according to claim 7 to 10, characterized in that in the apparatus for carrying out the method, at least one IR radiator for predrying and at least one IR radiator for final drying in two with respect to the moving objects arranged one behind the other chambers are arranged and the first chamber of Vor - And the following chamber of final drying is used.
EP11005621.5A 2010-08-11 2011-07-08 Method for drying with infrared radiation and device for executing the method Not-in-force EP2418316B1 (en)

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EP1889969A2 (en) 2006-08-14 2008-02-20 Herbert Kannegiesser GmbH Method for unwrinkling garments and tunnel finisher
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US3150864A (en) * 1962-08-09 1964-09-29 Gas Heat Engineering Corp Apparatus for applying heat treatment to web material
US3765580A (en) * 1972-02-14 1973-10-16 Automatic Steam Products Corp Garment dewrinkling process and apparatus
US5046944A (en) * 1979-11-16 1991-09-10 Smith Thomas M Infra-red generation
DE3710787A1 (en) * 1987-03-31 1988-10-13 Babcock Textilmasch Apparatus for the heat treatment of textile webs and the like
DE19654130A1 (en) * 1996-12-23 1998-06-25 Veit Gmbh & Co Garment finishing
WO1999034053A1 (en) * 1997-12-30 1999-07-08 Amana Company, L.P. Improved efficiency clothes dryer
EP0965806A2 (en) * 1998-06-17 1999-12-22 Hopi Anstalt Method and apparatus for drying a textile fabric
DE10021011A1 (en) * 2000-04-06 2001-10-11 Tradlec Stanislav Drying chamber for tunnel finishers features cooling element
DE10064277A1 (en) * 2000-12-22 2002-07-25 Advanced Photonics Tech Ag Functional or decorative coating application onto a substrate involves infrared treatment of the coating at specified radiation densities
JP2005164171A (en) * 2003-12-04 2005-06-23 Sharp Corp Drying radiation heat source device and drying device using the same
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EP1889968A2 (en) 2006-08-14 2008-02-20 Herbert Kannegiesser GmbH Method for unwrinkling garments and tunnel finisher
EP1889969A2 (en) 2006-08-14 2008-02-20 Herbert Kannegiesser GmbH Method for unwrinkling garments and tunnel finisher
DE202009005748U1 (en) 2009-04-20 2009-06-25 Hornung Gmbh Indupress & Co. Kg tunnel finisher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013127514A3 (en) * 2012-03-01 2014-04-10 Herbert Kannegiesser Gmbh Method for treating textiles, in particular garments, in a tunnel finisher

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ES2557516T3 (en) 2016-01-26
DK2418316T3 (en) 2016-02-08
EP2418316A8 (en) 2012-08-01
EP2418316B1 (en) 2015-10-28

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