EP2546406A2 - Method and device for handling a textile good - Google Patents

Abstract

The method involves applying a handling unit on a textile goods (2) that is dried on heating cylinders (4, 5). The textile goods is loaded with an air flow and rested on the heating cylinders, where the textile goods is guided across a deflection device (6) i.e. air-jet deflection device, before reaching the heating cylinders so as to contactlessly actuate the textile goods and indicate a non-adhesive surface of the textile goods, and allow the textile goods to be kept at moderate temperature. The air flow is directed in an input region tangential to the heating cylinders. An independent claim is also included for a device for treating a textile goods.

Description

The invention relates to a method for treating a textile product, in which a treatment agent is applied to the textile material and the textile material is dried on at least one heating cylinder.

Furthermore, the invention relates to an apparatus for treating a textile material with a Behandlungsmittelauftragsabschnitt and a drying section, wherein the drying section has at least one heating cylinder, on the periphery of the textile material is applied during drying.

The invention will be described below using the example of a textile material, which is in the form of a chain, ie as a thread template, and is provided with a size that needs to be dried. But it can also be used in other situations, for example, after a paint application to the fabric or a washing of the textile.

Textile threads often have a relatively rough surface. This roughness complicates the further processing, such as weaving. Therefore, it provides the textile before further processing with a sizing, which may contain starch as the main ingredient, for example. The sizing provides a degree of surface smoothness and hence a reduction in friction between the surfaces of filaments rubbing together during processing.

To apply the size, the textile material is usually applied with a liquid in which the size is dissolved. For example, the textile material can be passed through a trough which is filled with the sizing liquid. Regardless of the type of application of the sizing liquid, the textile material must be dried after application of the sizing liquid, so that only the sizing remains on the surface of the sutures.

One way of drying is to guide the fabric over a portion of the circumference of a heating cylinder that moves, for example, at a peripheral speed that corresponds to the speed of the fabric. The heating cylinder has an increased Surface temperature, so that he can supply heat to the textile. The heat leads to evaporation of volatile constituents of the sizing liquid, so that after a certain drying time, the textile material is dried and only sizing remains on the surface of the threads.

This procedure has proven itself. But it is relatively energy consuming, which leads to high costs.

The invention has for its object to enable a cost-effective treatment.

This object is achieved in a method of the type mentioned above in that the resting on the heating cylinder textile material is subjected to an air flow, wherein the textile material is guided in front of the heating cylinder via a deflection device that meets at least one of the following conditions: it works without contact, it has a non-stick surface, it is tempered.

The air flow exerts a certain contact pressure on the textile material, at least over part of the circumferential surface of the heating cylinder, so that the contact between the textile material and the circumference of the heating cylinder is improved. This also improves the heat transfer from the heating cylinder to the textile material and thus the energy yield. The air flow can simultaneously remove volatile constituents of the treatment agent, for example the sizing liquid, so that the vapor pressure of these components in the vicinity of the textile decreases. This in turn facilitates further evaporation of the volatiles. The textile material is guided in front of the heating cylinder via a deflection device. This makes it possible to determine the beginning of the support zone of the textile material on the heating cylinder. The properties of the deflection device prevent the treatment agent from settling on the deflection device. It rather remains on the textile and can then be dried on the heating cylinder.

Preferably, the air flow is heated. This heat is also supplied on the side of the textile material, which is not applied to the heating cylinder. This has the further advantage that the heat radiation from the heating cylinder is reduced in the environment, which in turn leads to a better utilization of the heat emitted by the heating cylinder through the textile. This also reduces energy consumption and thus costs.

Preferably, the air flow is directed tangentially to the heating cylinder in an input area. Such a flow is obtained, for example, when the air flow is directed only at one or a few positions in the circumferential direction on the circumference of the heating cylinder. There, the textile material is relatively strongly pressed by the air flow to the heating drum. But the air flow can reach from there to other areas on the circumference of the heating cylinder, where it then flows substantially tangentially. This is particularly advantageous in the entrance area because the air flow is then at the incoming textile material can peel off adherent air layer so to speak. This makes it possible to condition the air used for drying the textile material, which is essentially transported by the air stream, in the desired manner.

Preferably, the air of the air flow is at least partially circulated. In particular, in the case of a heated air stream, this is advantageous from an energy point of view. Although it will not be able to recover all the air for a renewed application of the textile material. The air, which has already acted upon the textile material once, will often have experienced a certain cooling. Nevertheless, the circulated air still has a certain heat content, which does not have to be re-supplied, but can be used again.

Preferably, the air flow is supplied in the region of the peripheral surface of the heating cylinder and discharged parallel to the axis of the heating cylinder. Thus, the air flow can push the fabric on the peripheral surface of the heating cylinder, without this effect is canceled by the discharged air.

Preferably, the air flow is conducted in a housing which surrounds the heating cylinder at least over part of its circumference. The housing has the further advantage that one can achieve a certain thermal shield here, so that less heat energy is released into the environment. This leads to a considerable Energy savings. On the other hand, the environment is not so much heated, which has a positive effect on working conditions in the vicinity of the device.

Preferably, the textile material is irradiated in front of the heating cylinder. Depending on what is used as a treatment, irradiation can produce certain effects. If you only want to remove the volatile or aqueous components of the treatment agent, then you can already provide heat with the irradiation, for example. When using a different treatment agent, it is possible, for example, if suitable irradiation is initiated, to initiate a chemical conversion process, which is then continued on the heating cylinder during drying.

In this case, it is preferred that a thermal radiation is used for the irradiation. Thermal radiation, ie infrared radiation, can be generated relatively easily. It is largely harmless to use and leads to an elevated temperature of the textile material, so that you can achieve a relatively fast drying with the additionally supplied by the heating cylinder heat.

Preferably, one uses for deflecting an air flow. With a stream of air, the deflection can be carried out without contact, ie there is no risk that one strips off the treatment agent at the deflection or the treatment agent attaches to the deflection during deflection. For redirecting you can, for example use a so-called "Air-Turn", in which the textile material is guided on an air cushion.

Preferably, the air flow is tempered. By tempering you can in turn affect the treatment agent. The tempering can consist both in a cooling, for example, to immobilize constituents of the treatment agent, as well as in a heating, so to speak to perform a kind of predrying.

The object is achieved in a device of the type mentioned above in that an air flow generating device is provided which generates a directed onto the resting on the heating cylinder textile material air flow, wherein a deflection device is arranged in front of the heating cylinder, which meets at least one of the following conditions: they works without contact, it has a non-stick surface, it is tempered.

As already explained above in connection with the method, the air flow is able to press the textile material with a certain pressure on the circumference of the heating cylinder, so that the heat transfer between the heating cylinder and the textile material is improved. The better this heat transfer, the better the energy yield. One can then either evaporate more treatment agent in the same time or, if you want to evaporate the same amount of treatment agent, spend less heat energy. By the deflection, one can define the beginning of the wrap, without that Treating the deflector too dirty.

Preferably, the air flow generating device has a heating device. The heater can be used to heat the airflow. If the air flow also has an elevated temperature, then not only heat is given to the textile from the side of the heating cylinder, but there is additionally a further heat source available, namely the heated air of the air flow. The air of the air stream can also be used to carry off already evaporated components of the treatment agent. As a result, the vapor pressure of these components is lowered in the vicinity of the textile, less heat energy is required for the further evaporation of these components from the treatment agent, which adheres to the textile.

Preferably, the air flow generating device directs the air flow tangentially to the heating cylinder, at least in an input region. In this entrance area, the air flow can then peel off air from the fabric, which is still from the environment. With this measure, one is able to condition the additionally used for drying air of the air flow so that can achieve optimal drying results.

Preferably, the air flow generating device has a housing which at least partially surrounds the heating cylinder. The housing is able to keep the heat dissipation into the environment small. At the same time allowed the housing, to guide the air flow in a desired manner, so that there are good conditions for the drying of the textile.

Preferably, the housing has at least one supply air connection, which is arranged in the region of an axial extension of the heating cylinder, and at least one exhaust air connection, which is arranged in an end wall of the housing. The supply air connection thus directs an air flow into the interior of the housing. This air flow creates a pressure on the textile material in the direction of the heating cylinder. The air that has acted on the textile can then escape laterally through the exhaust port. The exhaust port is arranged in an end wall of the housing, which is directed substantially perpendicular to the axis of the heating cylinder. This can generate a direction of the exhaust air, which is parallel to the axis of the heating cylinder.

Preferably, the supply air connection and the exhaust air connection are connected to each other via a circuit. In this cycle, for example, funding, such as a fan or the like, arranged. Even if you can not lead the entire air of the air flow in a circuit, this results in significant savings through energy recovery. The air taken out of the housing through the exhaust air connection also has an increased temperature and thus an increased heat content which can be used for the further treatment of the textile product.

Preferably, an irradiation device is arranged in front of the heating cylinder, which acts on the textile material. As explained above in connection with the method, it is then possible to irradiate the textile material prior to emergence onto the heating cylinder in order to achieve certain effects in the treatment agent or to simply preheat the textile material with the treatment agent.

It is preferred that the irradiation device is designed as an IR radiator. Such an infrared emitter, which may well be arranged on both sides of the textile material, is able to direct heat radiation to the textile material in order to heat it.

Preferably, the deflection device is designed as an air-jet deflection device. Such an air-jet deflection device, which is also known by the name "Air-Turn", produces an air cushion on which the textile material rests during the deflection or by which it is supported. The air cushion must of course be renewed continuously. In other words, air has to be continuously updated.

It is preferred that the air jet deflection device has a tempering device. The tempering device is able to heat or cool the air supplied to the air cushion. Upon cooling, one can achieve some immobilization of ingredients of the treating agent, thus reducing the risk of deposits on the heating cylinder. alternative You can also heat the air so that you get a kind of pre-drying.

Fig. 1

eine Vorrichtung zum Beschlichten eines Textilguts im Schnitt I-I nach Fig. 2,

Fig. 2

eine Draufsicht auf die Vorrichtung, teilweise im Aufriss,

Fig. 3

eine erste Ausgestaltung einer Umlenkeinrichtung in vergrößerter Darstellung und

Fig. 4

eine zweite Ausgestaltung einer Umlenkeinrichtung in vergrößerter Darstellung.

The invention will be described below with reference to a preferred embodiment in conjunction with the drawings. Herein show:

Fig. 1

a device for embossing a textile material in section II according to Fig. 2 .

Fig. 2

a plan view of the device, partly in elevation,

Fig. 3

a first embodiment of a deflection in an enlarged view and

Fig. 4

a second embodiment of a deflection in an enlarged view.

The invention will be described below with reference to a sizing order. In this case, a sizing forms the treatment agent. However, the invention is applicable in other cases, for example, when the fabric is dyed or printed or when the fabric is simply washed.

The invention will be described below with reference to a textile material which is present in a thread pattern. However, it is also applicable to other forms of textile, for example, in a flat textile, previously produced by weaving, knitting, knitting or otherwise.

A device 1 for quilting a textile product 2 in the thread original has a sizing application section 3, in which the textile material 2 is subjected to a sizing. The sizing may have various configurations. It may, for example, be a dispersion in which sizing is distributed in a carrier liquid. It can also be directly liquid sizing. The sizing may also be present as a foam or paste. In any case, the textile material 2 becomes wet or at least moist when the sizing agent is applied. Regardless of the form of the size and the nature of the application of the size to the fabric 2, it is necessary to dry the textile material 2 after application of the size.

For drying, the textile material 2 is passed over two heating cylinders 4, 5. Bypasses 6-9 are provided to hold the textile material 2 over as large a part of the circumference of the heating cylinders 4, 5. The deflectors 6-9 are in Fig. 1 shown as roles. As will be explained in more detail below, but they can also have a different shape. The heating cylinders are heated, for example by means of steam, which is introduced into the interior of the heating cylinder 4, 5. The heating cylinders 4, 5 have an increased surface temperature, so that they can give off heat to the resting fabric 2. The heat also heats the sizing liquid adhering to the fabric 2 and vaporizes it, so that ultimately only the size remains on the threads of the textile material 2.

The deflection 6-9 are arranged so that the fabric 2, the heating cylinder 4, 5 wrap around as large a part of its circumference. The deflection device 6 defines the beginning of the looping around the heating cylinder 4 and the deflection device 7, the end of the wrap around the heating cylinder 4. Similarly, the deflection 8 defines the beginning of the wrap around the heating cylinder 5 and the deflection device 9, the end of the wrap It may be provided that the deflection devices 6-9 are displaceable, so that the wrap angle around the heating cylinders 4, 5 can be changed. In general, however, it will be advantageous if the textile goods 2 wrap around the heating cylinders 4, 5 over as large a part of their circumference as possible.

In the direction of the textile material behind the heating cylinders 4, 5 night drying cylinders 10-13 are arranged before the textile leaves the device at an outlet 14.

The heating cylinders 4, 5 are at least partially surrounded by a housing 15. The housing 15 encloses the heating cylinders 4, 5 each over more than half their circumference.

The housing 15 is connected to a supply air duct 16, which communicates via two branches 17, 18 with supply air connections 19, 20 of the housing 15 in connection. The supply air duct 16 is in Fig. 2 shown interrupted, so you can see more components of the device 1.

The two supply air connections 19, 20 are arranged so that they are directed to the periphery of the heating cylinder 4, 5. The air flowing through the supply air duct 16 then forms an air flow, which is directed by the supply air connections 19, 20 to the periphery of the heating cylinder 4, 5. This air flow ensures that the textile material 2 is pressed against the circumference of the heating cylinders 4, 5 at an increased pressure.

The supply air duct 16 is connected to a heating device 21 so that the air fed into the housing 15 through the supply air duct 16 can be heated. The heated air also helps to introduce heat into the fabric 2, so that the drying is accelerated.

At the same time, the air flow through the housing 15 is directed so that it hits tangentially to the heating cylinder 4 on the textile material 2 in an entrance area, ie in the running direction behind the first deflection roller 6. The supplied air is thus able to, so to speak adhering to the fabric 2 air peel, so that one can easily ensure that the air used to pressurize the textile material 2 within the housing 15 is a suitably conditioned air. Similarly, of course, the air at the second heating cylinder 5, which is supplied through the supply air port 20, a region in the direction behind the pulley Apply 8 to peel the air there from Textilgut 2.

To generate the air flow of the supply air duct 16 is connected to a blower 22 which is driven by a motor 23.

As in particular in Fig. 2 can be seen, the two supply air connections 19, 20 are arranged so that they open in the middle of an axial extension of the heating cylinder 4, 5 in the housing 15. The majority of the air thus supplied is removed from the housing 15 via exhaust ports 24-26 which are connected to an exhaust duct 27. For this purpose, the exhaust air duct 27 is connected to an exhaust fan 28, which sucks the exhaust air from the housing 15 and conveys it into a filter device 29. From the filter device 29, the air is supplied to the blower 22. For this purpose, a channel section 30 is provided which connects the blower 22 with the filter device 29. In any case, the air is partly circulated.

The exhaust ports 24, 25, 26 are arranged in a front side wall 31 of the housing. The end wall 31 extends parallel to the end faces of the heating cylinder 4, 5. It is provided that the exhaust ports 24-26 are arranged laterally adjacent to the heating cylinders 4, 5, so that no or at most a small overlap between the exhaust ports 24-26 and the heating cylinders 4, 5 parallel to the axes of the supply air connections 19, 20 results.

Between the application section 3 and the first deflection device 6, two IR emitters 32, 33 are arranged, which each generate a heat radiation. This heat radiation is directed to both sides of the textile material 2. The heat radiation from the IR radiators 32, 33 causes the textile material 2 with the applied size already receives an elevated temperature, so that already a part of the liquid used for applying the size can be evaporated. Of course, depending on the treatment agent, it is also possible to use other radiation generators which use other radiations. For example, it would be conceivable to generate UV radiation in order to trigger certain chemical processes in the treatment agent.

Fig. 3 shows a first embodiment of the deflection device 6. The other deflection devices 7-9 may be designed in the same way. However, they can also be easily designed as pulleys.

The deflection device 6 has a deflection roller 34 with a surface 35. On the surface 35, a non-stick coating is arranged, for example made of polytetrafluoroethylene. The non-stick coating ensures that sizing or other treatment agent does not accumulate on the deflection roller 34, which could lead to disruptions over time. Of course, you can form the surface 35 of the guide roller 34 in any other way non-adhesive.

A heater 36 acts on the surface 35 and causes the surface 35 to heat up during operation. The heat of the surface 35 is then transferred to the textile material 2, which also leads to the adhesion of the sizing agent or another treatment agent to the deflection roller 34 being prevented. Depending on the treatment agent used, it may also be expedient to use a cooling device instead of a heating device 36 if cooling of the deflection roller 34 prevents the adhesion of sizing or another treatment agent. It is also possible to temper the deflection roller 34 in other ways, for example from the inside using a tempered liquid or a tempered gas.

Fig. 4 shows a second embodiment of the deflection device 6. The deflection device 6 here has an air-jet deflection device 37, which is also referred to as an "air-turn". The air-jet deflection device 37 has a housing 38 which is approximately cylindrical in shape on a side facing the textile material 2. In this page open several channels 39, which are fed from a supply channel 40 which extends over the length of the housing 38 (perpendicular to the plane). Of course, the channels 39 are not only distributed over the textile material 2 side facing the housing 38, as shown, but also over the length of the housing 38th

The supply passage 40 is supplied with air under an increased pressure supplied through a blower 41 becomes. In a line 42 between the blower 41 and the supply channel 40, a tempering device 43 is arranged, which either the air flow, which is discharged through the channels 39, heated or cooled. The type of tempering depends on the size used or another treatment agent.

By the procedure described one can increase the efficiency of the device 1 quite considerably. Since you can dry a relatively large amount of fabric 2 per time, the fabric 2 can be sized at a higher speed. At the same time less energy per area of the textile material 2 is needed for drying, so that saves energy costs. The length of the device can be kept relatively short.

Claims (20)

Method for treating a textile product (2), in which a treatment agent is applied to the textile material (2) and the textile material (2) is dried on at least one heating cylinder (4, 5), characterized in that the material which is applied to the heating cylinder (4, 5) lying textile material (2) is subjected to an air flow, wherein the textile material in front of the heating cylinder (4, 5) via a deflection device (6) is performed, which meets at least one of the following conditions: it works without contact, it has a non-stick surface she is tempered. A method according to claim 1, characterized in that the air flow is heated. A method according to claim 1 or 2, characterized in that the air flow in an input area is directed tangentially to the heating cylinder (4, 5). Method according to one of claims 1 to 3, characterized in that the air of the air flow is at least partially guided in a circuit. Method according to one of claims 1 to 4, characterized in that the air flow in the region of the peripheral surface of the heating cylinder (4, 5) supplied and is discharged parallel to the axis of the heating cylinder (4, 5). Method according to one of claims 1 to 5, characterized in that the air flow in a housing (15) leads, which surrounds the heating cylinder (4, 5) at least on a part of its circumference. Method according to one of claims 1 to 6, characterized in that the textile material (2) in front of the heating cylinder (4, 5) irradiated. A method according to claim 7, characterized in that one uses for irradiation heat radiation. Method according to one of claims 1 to 8, characterized in that one uses for deflecting an air flow. A method according to claim 9, characterized in that the air flow is tempered. Device for treating a textile product (2) with a treatment agent application section (3) and a drying section, wherein the drying section has at least one heating cylinder (4, 5), on the circumference of which the textile product (2) rests during drying, characterized in that an air flow generating device ( 15-22) is provided which generates a directed onto the resting on the heating cylinder textile material (2) air flow, and in front of the heating cylinder (4, 5) a deflection device (8) is arranged, which fulfills at least one of the following conditions: it works non-contact, it has a non-stick surface, it is tempered. Apparatus according to claim 11, characterized in that the air flow generating means (15-22) comprises a heating device (21). Apparatus according to claim 11 or 12, characterized in that the air flow generating means (15-22) directs the air flow tangentially to the heating cylinder (4, 5) at least in an input region. Device according to one of claims 11 to 13, characterized in that the air flow generating device (15-22) has a housing (15) which at least partially surrounds the heating cylinder (4, 5). Apparatus according to claim 14, characterized in that the housing (15) has at least one supply air connection (19, 20), which is arranged in the region of an axial extent of the heating cylinder (4, 5), and at least one exhaust connection (24-26), which is arranged in an end wall (31) of the housing (15). Apparatus according to claim 15, characterized in that the supply air connection (19, 20) and the exhaust air connection (24-26) via a circuit (30) are interconnected. Device according to one of claims 11 to 16, characterized in that in front of the heating cylinder (4, 5) an irradiation device (32, 33) is arranged, which acts on the textile material (2). Apparatus according to claim 17, characterized in that the irradiation device (32, 33) is designed as an IR radiator. Device according to one of claims 11 to 18, characterized in that the deflection device (6) is designed as an air-jet deflection device (37). Apparatus according to claim 19, characterized in that the air jet deflection device (37) has a tempering device (43).

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