DE102007042627A1 - Process for moistening or conditioning textile yarn, involves treatment with steam under reduced pressure followed by active cooling plus water spray in the same space or in a downstream zone - Google Patents

Abstract

A process for moistening or conditioning textile yarn in which the moisture content has been reduced to a residual value lower than its original moisture content during spinning, by the action of water vapor under reduced pressure with cooling on yarn which is processed to yarn spools and partly arranged on a support, in which the yarn, after treatment with water vapour, is subjected to active cooling in the same space or a downstream space or zone with the addition of sprayed water during cooling. An independent claim is included for a system for carrying out the above process, with conveyors enabling at least semi-continuous throughput of the yarn to be treated and several zones or stations along a processing section, comprising a passive precooling zone or station if required, at least one active cooling zone or station in which air-cooling occurs in at least one closeable cooling space separate from the moistening device or in a cooling section to which a moistening device is connected, at least one vacuum moistener and at least one active cooling zone or station which is identical with or different from the moistening device in the form of a closeable air-cooling space or section connected to the moistener, in which the walls of the cooling zone/station are coated with a water-resistant or water vapour-resistant, thermally insulating material which absorbs neither water vapor nor water.

Description

The The invention relates to a method and a method suitable therefor Arrangement for moistening textile material, in particular textile yarns and their processed products.

Textiles are hygroscopic, ie they absorb moisture. This ability depends on the nature of the fiber. Humidity, temperature and other external influences play a major role. At present, it is customary in the textile industry to "condition" the yarns which are obtained during the spinning of natural, synthetic and mixed fibers and wound onto bobbins, ie to subject them to moistening. The purpose of conditioning is to bring the moisture lost during the spinning process back into the yarn as much as possible. The remaining after spinning residual moisture is z. As in cotton yarns in the order of 5 weight percent, while the commercial product should have 8.5 percent by weight of moisture, which corresponds to the original yarn moisture. This water content is also required so that the fibers in the yarn are sufficiently smooth and remain elastic after spinning, so that as little as possible thread breaks occur at the usual working speeds of weaving and knitting machines today. On the other hand, it is in the interest of the seller of textile materials to offer products whose actual moisture content is not or not significantly below that which is customary for the commodity, since a material of lower humidity ie with a higher dry weight does not achieve a higher price. Below are the commercial moisture supplements for the most important fiber materials: cotton 8.50% flax 12.00% Wool 18.25% silk 11.00% viscose 11.00 to 14.25% (depending on the type) polyacrylic 1.50 to 2.00% (depending on the type) polyamide 6.25% polyester 1.50%

at Blending yarns is based on the moisture addition the surcharges applicable to the unmixed yarns calculated according to the proportion of each fiber in the mixture. It will a standard climate (20 ° Celsius, 65% relative humidity) based on.

The to evaluate the yarn properties main parameters and their capture are z. B. described in exercise book III for Training in spinning ("Characteristics and testing of fibers, ribbons, rovings and yarns ") from the industry association yarns e. V., 9th ed. Eschborn 1992.

For the determination of yarn moisture there are two methods:

a) Weight analysis after heat drying

G_n

= Nettogewicht der Lieferung, ohne Hülsen und Verpackung

r_t

= handelsüblicher Feuchtigkeitszuschlag

u_t

= Trocknungsverlust (in % des Trockengewichts)

The shipment or packages provided for shipment are sampled. These are weighed, then completely dried in hot air stream and then weighed again. The weight difference, expressed as a percentage of the weight of the dried samples, is the so-called drying loss. The trade weight (H) is then calculated according to the following formula:

G _n

= Net weight of the delivery, without tubes and packaging

r _t

= commercial moisture supplement

u _t

= Drying loss (in% of dry weight)

b) Electric

A faster method is the capacitive determination of yarn moisture with a commercially available measuring device (eg the Device of Forté).

she should the exact weight analysis of the moisture by Do not replace drying in the oven, but provides sufficiently accurate Documents for the operation monitoring. These Method has the advantage that the test material is not is changed, the measurement time is very short and the handling is comfortable.

Besides there are hand-held moisture meters for practical operation, where the moisture content in the bale, strip, roving and yarn (Cops, coils) by means of needle electrodes or measuring probes with more satisfactory Accuracy can be determined.

Finally, the concept of trading fineness is explained:
In the formulas for the yarn fineness
dtex = grams / 10,000 meters or Nm = meters / gram
is the weight of the thread included. With the weight fluctuations due to different moisture content mentioned in the previous section, the yarn count also varies. In order to eliminate these fluctuations, one uses the commercial weight in the formula. One speaks then of trade fineness (trade number) or conditioned yarn fineness (yarn number).

The Conditioning is done in so-called vacuum humidifiers, evacuable Containers, the bobbins by batches on suitable Carriers, z. Pallets, thorn wagons, reel guards, railroad cars, perforated aluminum trolley, cardboard boxes can accommodate. One evacuates, d. H. Place the apparatus charged with the bobbins under reduced pressure and creates in the apparatus a saturated steam atmosphere, which corresponds to the reduced pressure (eg 55 to 68 ° C). The condensing water penetrates into the package and is from the fiber surface or capillary cavities absorbed in the fibers. At the condensation becomes simultaneously Transfer heat to the material. The condensation comes to a standstill when the material reaches the saturated steam temperature Has. The process will vary depending on the desired humidification result canceled, including economic considerations the duration of treatment play a role. An appropriate treatment period is z. At 10 minutes to one hour and preferably between 20 and 40 minutes.

To Termination of the process, the treated materials of a Chilling exposed. The condensation penetrates heat into the materials and heats them to process temperature. Since the materials treated in this way after cooling it is to be packaged to avoid further evaporation necessary the materials by cooling to a lower one Allow the temperature to cool, so the "sweat" Condensation on the inside of the plastic packaging (foil) to avoid.

differences in the water absorption capacity arise from the different Hygroscopicity of the various textile fibers, the influence the physical and chemical data, as well as the yarn density, Type of yarn winding, fiber and yarn titer. These material constants should not be considered further here. Differences in the Efficiency of the humidification process results from the performance the vacuum pumps, d. H. of the drawn vacuum (achieved diminished Pressure), whereby a better vacuum also a better condensation result entails. This is due to the fact that the effective condensing surface with improved vacuum on increasingly deeper layers of yarn extends inside the coils. Again this is system immanent and should not be considered here.

At the Conditioning attempts the commercial moisture additives (eg, 8.5% by weight for cotton). Has the cotton before conditioning a residual moisture content of z. B. 5.0% and a yarn temperature of 20 ° C, can by means of Vacuum humidification (without the invention described below active cooling) a moisture increase of barely more than 2.5% (after 20 minutes and evaporation afterwards to the conditioning process). So practically the desired commercial Moisture surcharge of 8.5% for cotton not reached.

at a residual moisture of z. B. 5% and a yarn temperature of z. B. 60 ° C is achieved under otherwise identical process parameters even only a significantly lower moisture gain than 2.5%. It is then at about 1.7%, also after 20 minutes of evaporation following the conditioning process.

Practically, the desired humidity is not reached. It should also be noted that the residual moisture is distributed approximately evenly in all coil layers, while the rewet preferably the outer coil layers and the innermost areas are often detected. This is especially true in so-called "warm countries": For example, the cotton-producing countries are located in subtropical regions and are also processing countries, ie the seat of yarn producers. There, the water loss of the fibers is particularly high because of the higher temperatures in the spinning mills and therefore the rewetting of the yarns produced is particularly important. The situation described above, however, limits the currently used method of conditioning precisely under these climatic conditions: Where the yarns need to be moistened most urgently, the conditioning result is particularly poor. in addition comes that the steam temperature of the saturated steam is limited upwards. In particular, when processing paraffinated yarns for knitting the highest permissible process temperature in the conditioning process at 65 ° C, ie it is saturated steam reduced pressure, which can not fully use the available pressure difference between atmospheric pressure and performance of the vacuum pumps. Although is out of the DE-A-3 118 971 known to attenuate freely suspended fabric webs in the continuous process by Dämpfzonen at least twice, ie first suspend the action of water vapor in a first steam chamber and promote the further absorption of water vapor in that the webs thereafter pass through a cooling section and then a second steam chamber. The cooling is obviously operated at atmospheric pressure and in the case illustrated graphically simply in that the tracks traverse a certain distance in the ambient air after passing through a first damping zone. Alternatively, a coolant can also be inflated onto the webs. Although it is spoken in the above-mentioned document that cooling chambers (numbered 6, 7) are used, however, it is clear from the reference to the drawing that they do not refer to cooling chambers, but rather to the damping chambers, which are the essential feature of the drawings form a given doctrine.

In order to avoid the above-mentioned disadvantages, has been in EP-A1-02002443.6 a method and an arrangement for moistening textile materials based on the observation that in addition to the predetermined material constants, the difference between the temperature of the saturated steam and the self-temperature of the package to be moistened has a great influence on the moistening efficiency. In the process described, textile yarns which have lost the moisture originally present in the pulp while spinning to a residual moisture lower than the original moisture are subjected to active cooling prior to exposure to water vapor under reduced pressure in an upstream space brought a higher humidity.

This Process is still in need of improvement, because active pre-cooling requires the description practically a separate part of the plant or a zone in which the Pre-cooling takes place.

It It has now been found that the conditioning of textile materials can also be effectively achieved by the materials - im Principle immediately - after exposure to water vapor in the vacuum humidifier (component C in the attached sketch) actively cooled. Subject of the invention are the method and the arrangement according to claim 1 or 2 and the subordinate Dependent claims. As "active aftercooling" is the action of air or an inert gas such as nitrogen on the Refrigerated goods referred to, the or by means of a refrigerator brought to a temperature below room temperature are. The vacuum humidifier is also known in the trade as a conditioning chamber designated and is useful in the simplest case designed as a cylindrical boiler.

The Cooling happens according to the invention a first embodiment within the vacuum humidifier, which is generally designed as a pressure-resistant boiler and to For this purpose, a sufficient internal insulation of the walls receives, so that the lowest possible heat exchange with the wall and thus the outside world takes place. The walls Be useful with a water or steam proof Material lined with heat-insulating material which absorbs substantially neither water vapor nor water. The inner insulation will avoid the walls The chamber was always cooled alternately and reheated must be, or the cold walls supplied Allow water to condense. It also avoids that is a change in the atmospheric state inside the humidifier - except for the edited Textile goods - on something other than the existing gas space affects only a small heat capacity has. This saves a considerable amount of energy, both the steam consumption as well as the cooling demand.

The Inner insulation is expediently made of a thermoset Material that has sufficient durability against moisture exposure having. It is understood that as insulating a massive Material in the form of a form-fitting to the rounding of the walls adjusted board material is used, no moisture can record. As a plate material is suitable, for example a phenolic or melamine resin laminate of suitable strength.

alternative for active after-cooling inside the vacuum humidifier may be aftercooling in a second embodiment also within a further, arranged after the conditioning chamber Chamber take place, which may also heat is insulated.

In principle, care must be taken in both methods that always select water in atomized form cooling is added, ie cooling takes place by lowering the ambient temperature, but at the same time the water particles settle on the materials and moisturize them. The achieved cooling will normally have different effects on the outer and inner coil layers, ie while the outer layers already have a temperature difference of 10-15 degrees with respect to the starting temperature, it may be that the inside of the coil has not undergone significant cooling. The cooling should therefore take as long as possible until it has reached the coil inside, which is of course limited by economic considerations. In principle, even a slight cooling can significantly improve the conditioning result. The higher saturation of the outer layers compensates for the more intense evaporation there. Overall, the moisture content of the materials due to the migration properties of the textile fibers (if hygroscopic) compensates completely after about 24 hours.

The After cooling, after the condensation process has finished, d. H. after complete achievement of the saturated steam condition and pressure compensation enabled. As coolants become cold Water and compressed air via special two-fluid nozzles introduced; these nozzles atomize that Water in the finest droplets and fog the interior of the Machine completely on. It finds an adiabatic cooling instead of; The normally evaporating water is activated by an active Spraying or misting retained in the materials while the temperature of the materials drops significantly.

The usual Process time for the conditioning is according to international standard approx. 60 minutes. By appropriate measures such as reducing the necessary duration to achieve the vacuum, internal insulation of the humidification chamber and thus lower energy consumption and improving the humidification time was a reduction of the process time to about 35-40 minutes instead of 60 minutes. This allows the use the active cooling for a period of about 20-25 Minutes.

All In general, it is appropriate to the cooling mist to move within the cooling zone and thus lead that the coils lingers as intensively as possible on all sides become. Moving the cooling air can by means of conventional Fans happen all the way inside the room can lie.

It may be appropriate, the active aftercooling in the vacuum humidifier in those cases in which this appears useful to the user, d. H. It may well be that you are aware of one Longer process time decides because you get the benefits wants to expand the active pre-cooling without the area the invention is abandoned.

The Effect of the active aftercooling according to the invention is advantageously supported by the yarn bobbins after the conditioning process additionally in or after the Let production rooms (passively) cool down, if the local conditions, d. H. the ambient temperature and the space available such a measure make sense. This process is convenient in a zone called a buffer zone before packaging can.

• – eine Abladezone (A), wo die vorbereiteten Träger angeliefert werden, z. B. mittels eines Gabelstaplers;
• – eine erste und eine zweite passive Vorkühl- und Pufferzone (jeweils mit B bezeichnet); in der dargestellten Ausführungsform wird diesen Vorkühl- und Pufferzonen Abluft aus der nachgeordneten Kühlkammer (C) zugeführt;
• – eine Kühlkammer (C) mit zugeordneten – vor oder hinter der Zeichenebene angeordnet zu denkenden – Kälteanlagen (K);
• – einen Vakuumbefeuchter (D – im Text auch nur als Befeuchter bezeichnet), der mit einer Einrichtung zur Erzeugung des verminderten Drucks (V) und einem Dampferzeuger (W) sowie einer Nachkühleinrichtung ausgerüstet ist;
• – eine Zone zur (passiven) Abkühlung (E); welche bedarfsweise zusätzlich mit einer weiteren aktiven Nachkühleinrichtung ausgestattet ist (in der Zeichnung nicht dargestellt),
• – einer Wiegestation (F);
• – eine Verpackungsstation (G), z. B., um die Ware mit einer Stretch-Folie zu umwickeln;
• – einen Entnahmeplatz (H);

wobei an sich bekannte Fördermittel vorgesehen sind, die einen mindestens halbkontinuierlichen Durchsatz des zu kühlenden bzw. zu befeuchtenden Guts durch die Verfahrensstrecke ermöglichen.The method according to the invention is advantageously carried out in a device which can be referred to as a process section and has the zones shown schematically in the attached drawing:

• An unloading zone (A) where the prepared carriers are delivered, e.g. B. by means of a forklift;
• A first and a second passive pre-cooling and buffer zone (each labeled B); In the illustrated embodiment, these pre-cooling and buffer zones exhaust air from the downstream cooling chamber (C) is supplied;
• - A cooling chamber (C) with associated - arranged before or behind the plane to think - Refrigeration systems (K);
• - A vacuum humidifier (D - referred to in the text as a humidifier), which is equipped with a device for generating the reduced pressure (V) and a steam generator (W) and a Nachkühleinrichtung;
• - a zone for (passive) cooling (E); which, if necessary, is additionally equipped with a further active aftercooling device (not shown in the drawing),
• - a weighing station (F);
• - A packaging station (G), z. B. to wrap the goods with a stretch film;
• - a take-off place (H);

wherein known per se conveying means are provided which allow an at least semi-continuous throughput of the material to be cooled or humidified by the process route.

• – Messung der Innentemperatur und Restfeuchte der zur Behandlung anstehenden Garnspulen,
• – Messung der Luftfeuchte und der Raumtemperatur in der Vorkühl- und Pufferzone,
• – Messung der Luftfeuchte und der Raumtemperatur in der aktiven Kühlzone.

There are further preferred means for

• Measurement of the internal temperature and residual moisture of the yarn packages to be treated,
• Measurement of air humidity and room temperature in the pre-cooling and buffer zone,
• - Measurement of air humidity and room temperature in the active cooling zone.

• – die Menge der durchzusetzenden Garnspulen,
• – die unmittelbar nach der Produktion vorliegende Innentemperatur der Garnspulen sowie vorzugsweise der vorhandenen Restfeuchte,
• – Raumtemperatur und Luftfeuchte in der passiven Kühl- und Pufferzone,
• – Raumtemperatur und Luftfeuchte in der in der aktiven Kühlzone,
• – einen Wert für die Abkühlungsgeschwindigkeit bei gegebener Raumtemperatur als Parameter,
• – die Temperatur der aktiven Kühlzone und/oder mindestens einen Temperaturgradienten innerhalb der aktiven Kühlzone,
• – die Geschwindigkeit der Rückbefeuchtung bei gegebener Restfeuchte und gegebener Spulentemperatur als Parameter, sowie
• – gegebenenfalls weitere Informationen, und dem Stellgrößen entnommen werden, mittels derer mindestens
• – die Verweildauer der Spulen vor der Einführung in die aktive Kühlzone,
• – die Verweildauer in der aktiven Kühlzone,
• – die Kühlleistung bzw. Temperatur der Kühlkammer,
• – die Verweildauer im Vakuumbefeuchter

derart gewählt werden können, dass mindestens eine der folgenden Größen ein Minimum wird:

• – die Gesamtverweilzeit einer gegebenen Menge an Spulen in der Vorrichtung einschließlich der Vorkühlzone,
• – der Kühlaufwand in der Kühlkammer,
• – die Differenz zwischen dem handelüblichen Feuchtezuschlag r_t und der tatsächlichen Garnfeuchte.

Furthermore, a process computer is preferably present, to which information is supplied via

• - the quantity of yarn packages to pass through,
• The internal temperature of the yarn packages immediately after production, and preferably the residual moisture present,
• - room temperature and humidity in the passive cooling and buffer zone,
• - room temperature and humidity in the active cooling zone,
• A value for the cooling rate at a given room temperature as parameter,
• The temperature of the active cooling zone and / or at least one temperature gradient within the active cooling zone,
• - The rate of rewetting at a given residual moisture and given coil temperature as a parameter, as well
• - If necessary, further information, and the manipulated variables are removed, by means of which at least
• The residence time of the coils before the introduction into the active cooling zone,
• - the residence time in the active cooling zone,
• The cooling capacity or temperature of the cooling chamber,
• - the residence time in the vacuum humidifier

can be chosen such that at least one of the following sizes becomes a minimum:

• The total residence time of a given amount of coils in the device, including the pre-cooling zone,
• The cooling effort in the cooling chamber,
• - the difference between the commercial moisture addition r _t and the actual yarn moisture content.

With the method according to the invention or the thereto provided arrangement can in particular the required energy consumption and / or minimizes the residence time in the active aftercooling and the increase in moisture in the bobbins in a desired ratio to the energy consumption and / or the residence time are set.

• a) auf Paletten gestapelt,
• b) auf Dornenwagen aufgesteckt oder
• c) in Kartons.

The bobbins coming from the spinning room are generally in several on suitable conveyors, for example

• a) stacked on pallets,
• b) attached to Dornenwagen or
• c) in boxes.

at semi-continuous operation, they are placed in a first buffer zone, which also cause a pre-cooling by the ambient air can be put together to lots of suitable size and the conditioning with active cooling zone supplied.

• a) einer thermisch möglichst gut innenisolierten Befeuchtungskammer,
• b) mindestens einer Nebel- bzw. Sprühanlage mit Ein- oder Zeit- oder Mehrstoffdüsen,
• c) mindestens einem Geber für die Innentemperatur,
• d) mindestens einem Geber für die Luftfeuchtigkeit,
• e) Ventilatoren für Luftumwälzung und/oder Luftaustausch,
• f) bedarfsweise Mitteln zur Befeuchtung der Betriebsluft der Kühlzone oder Kühlzonen,
• g) fördertechnischen Mitteln wie Rollstrecken, Bändern und/oder Kettenförderern für den Transport der Träger (Paletten, Dornenwagen usw.).

The active post-cooling zone consists z. B. from a machine with:

• a) a thermally best possible inside insulated humidification,
• b) at least one mist or spray system with single or multi-substance nozzles,
• c) at least one internal temperature sensor,
• d) at least one humidifier,
• e) fans for air circulation and / or air exchange,
• f) if necessary, means for humidifying the operating air of the cooling zone or cooling zones,
• g) conveying equipment such as rolling lines, belts and / or chain conveyors for the transport of the carriers (pallets, thorns, etc.).

The downstream of the action of water aftercooling active cooling zone can be designed as a cooling chamber in the broadest sense; z. B. is a cooling tunnel with sliders at both ends as well as a chamber or boiler with a gate designed as an end cap, which can accommodate the yarn carrier. Before and in particular after the post-cooling zone can be provided as locks serving routes. While in the first case the refrigerated goods will be passed through the lying in the process route tunnel on a conveyor system, a chamber or boiler is usually filled in batches and can, be relied on the entire process route, z. B. also be arranged laterally from this. The chosen embodiment may also be based on existing apparatus which were intended for a different purpose and intended to be set up for use in accordance with the invention.

The Garnspulen are expedient in one of the cooling zone upstream buffer zone preferably in each case for the capacity of the underlying active cooling zone or the vacuum humidifier appropriate batches, d. H. also several Pallets / Dornwagen / cartons, etc. put together and together by means of conveyors in cycles (i.e., semi-continuous) these work zones supplied and enforced by this. possibly can the compilation also take place after this buffer zone. The active cooling zone and the vacuum humidifier can be used at all should have a different recording capacity, however Be aware that not too long dwell and transport times occur between these components, hence the cooling effect not lost again. After leaving the vacuum humidifier the bobbins are optionally removed from the Dornwagen, weighed and fed to storage. In the arrangement on pallets or in cartons may be a separation of these means of transport advantageously eliminated. If necessary, the funding attributed to the entrance of the process route.

ever According to the design, the cooling zone can have one or more parts take up. The necessary cooling capacity results the residence time, the amount of yarn and the desired temperature. It may be appropriate, especially if already existing humidification, the inventive split active cooling zone into several parallel units. This may also be from the point of view of availability already existing in trade existing facilities, on the needs of the invention Procedure can be established.

If a low ambient temperature prevails, d. H. the active one Cooling only has to provide a relatively low performance, it may be appropriate for the active cooling zone certain operating air to achieve a higher relative humidity before or after the cooling process while rewetting, by cooling a Operating air from high ambient temperature to the operating temperature In general, a sufficient increase in the relative Humidity is achieved.

Advantageous the method is operated so that by the control of the active Cooling zone optionally either a reduction in temperature for a preselected (constant) time or a reduction to a constant temperature (variable time) is set become. The cooling capacity should be based on the expected parameters be matched.

The advantages of the method according to the invention and the comparison with the prior art can be summarized as follows:
During the cooling process after conditioning, about 20-30% of the moisture content previously introduced with vacuum and steam condensation evaporates. This loss of water is all the more regrettable, as it was previously introduced with considerable process and energy expenditure.

The Although active aftercooling promotes the faster Cooling of the materials, but prevented by adding of steam the drying of the outer material layers on the bobbins. Experimental measurements have shown that after approx. 30 minutes post-cooling time the evaporation loss to approx. 10-15% of the original value can be lowered could; So, by the process has the evaporation loss almost halved.

By Suitable improvements in the process flow can be active aftercooling both within the vacuum vessel (thereby creating a Another, new process step is created, which are controlled controlled can, as outside in a subordinate chamber, either with automatic conveying (roller, belt, Chain conveyor) or in a separate, for this Purpose designed space.

additionally for the controlled expiring evaporation also finds one temporally measurable sizes running cooling the materials instead. Instead of very different in practice managed waiting times with correspondingly higher fluctuations or lower moisture loss, is with active aftercooling within the machine a defined cooling process feasible to be reproducible and thus controllable Results.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3118971 A [0016]
• - EP 02002443 A1 [0017]

Claims (9)

A method of moistening or rewetting (conditioning) textile yarns which, during spinning, have originally lost moisture present in the fibrous material during spinning to a residual moisture lower than the original moisture by exposure to water vapor under reduced pressure and cooling to to yarn packages processed and batchwise arranged on support racks yarn, characterized in that the yarn is subjected to the action of water vapor either in the same room or a downstream room or zone of active cooling, wherein during cooling water is added in atomized form. Method according to claim 1, characterized in that that the residual moisture in cotton between 0 and 5 weight percent lies. Method according to claim 2, characterized in that that the air temperature to which the goods to be refrigerated are exposed at ambient temperature. Method according to claim 1, characterized in that that the initial temperature of saturated steam in at known manner set to 68 ° C or less becomes. Method according to claim 1, characterized in that that the duration of aftercooling between 10 and 60 minutes lies. Method according to claim 5, characterized in that that the duration of aftercooling is between 20 and 40 minutes lies. Method according to claim 1, characterized in that that the cooling precedes a passive pre-cooling when the ambient temperature is lower than the mean Temperature of a yarn package such that the yarn packages the ambient temperature be suspended until the mean coil temperature around at least 1 degree lower than before exposure to ambient temperature. Arrangement for carrying out the method according to any one of claims 1 to 7 for moistening or rewetting (Conditioning) of textile yarns originally during spinning moisture present in the fiber raw material during spinning have lost to a residual moisture that is lower than the original moisture, by the action of water vapor under reduced pressure on a yarn bobbin and processed Partieweise arranged on support racks yarn, wherein per se known funding are provided, the one at least semi-continuous throughput of the material to be humidified allow through the process route, along a Process route has several zones or stations: - optional a passive pre-cooling zone or station, - at least an active cooling zone or station, in which the cooling as air cooling in at least one closable, separate from the humidifier refrigerator or a cooling line is operated, to which a humidifier spatially connects, - at least a vacuum humidifier as humidifier, - at least an active cooling zone or station, either with the Humidifying device identical or as of the humidifier separate, subsequent to the humidifier and lockable refrigerator or a cooling section is formed, wherein the cooling as air cooling is operated, characterized in that the walls the cooling zone / cooling station with a water or damp-proof material made of heat-insulating material Material are lined, which is essentially neither water vapor nor Absorbs water. Arrangement according to claim 8, characterized that the cooling air inside the cooling zone or station moved and guided so that the coils on all sides of the cooling air to be lapped.