JP2013019092A - Method and apparatus for treating textile material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for treating a fiber and a method for subsequent drying at low cost.SOLUTION: There are provided a method and an apparatus for treating a textile material 2. A treating agent is coated on the textile material 2, and the textile material 2 is dried on at least one heating cylinder 4, 5. In order for that, the textile material 2 disposed on the heating cylinder 4, 5 is subjected to an airflow, and the textile material is guided through a turning mechanism 6 at an upstream side of the heating cylinder 4, 5. The turning mechanism satisfies at least one of the conditions of that it is actuated without contact, that it has an adhesion preventing surface, and that it is thermally adjusted.

Description

The present invention relates to a method for treating a fiber material, wherein a treating agent is applied to the fiber material and the fiber material is dried on at least one heating cylinder.
The present invention is further an apparatus for treating a fiber material, which has a treatment agent application part and a drying part, the drying part has at least one heating cylinder, and the fiber is provided on the peripheral surface of the heating cylinder during drying It relates to the material that abuts.

The present invention will be described below by taking a fiber material as an example, and this fiber material exists in the form of warp, that is, in the form of a yarn feeder and is provided with a sizing agent. This sizing agent must be dried. However, the invention can also be used in other situations, for example after applying the dye to the fiber material or after washing the fiber material.
Fiber yarns often have a relatively rough surface. This roughness makes other processes such as weaving difficult. Therefore, the fiber material is provided with a sizing agent which may contain, for example, starch as a main component prior to continued processing. Sizing agents provide a level of smoothness to the surface, thus reducing friction between yarn surfaces that rub during processing.

In order to apply the sizing agent, the fiber material is usually added with a liquid in which the sizing agent is dissolved. For example, the fiber material can be passed through a tank filled with a sizing agent solution. Regardless of the application method of the sizing agent solution, the fiber material must be dried after the sizing agent solution is applied so that the sizing agent only remains on the surface of the yarn.One possibility of drying is, for example, the speed of the fiber material. It is to guide the fiber material over a portion of the peripheral surface of the heating cylinder that moves at a consistent peripheral speed. The heating cylinder has a high surface temperature and the heating cylinder can supply heat to the fiber material. This heat evaporates the volatile components of the sizing agent liquid, and after a certain drying time, the fiber material is dry and the sizing agent only remains on the surface of the yarn.
This processing procedure has indeed proven its value, but it is relatively energy intensive, which makes it expensive.

  An object of the present invention is to enable inexpensive processing.

  The problem is that, in the method of the type pointed out at the beginning, the fiber material in contact with the heating cylinder is added with an air flow, and the fiber material is guided through the turning mechanism upstream of the heating cylinder. The problem is solved by satisfying at least one of the conditions of contact-type operation, anti-adhesion surface and temperature control.

The air flow applies a constant pressing pressure on the fiber material at least at a portion of the heating cylinder circumferential surface, improving the contact between the fiber material and the heating cylinder circumferential surface.
At the same time, the heat transfer from the heating cylinder to the fiber material is improved, and the energy yield is improved. The air stream can simultaneously carry away the volatile components of the treatment agent, such as the sizing agent liquid, and the vapor pressure of these components decreases around the fiber material. Therefore, further evaporation of volatile components is facilitated.
The fiber material is guided via a turning mechanism upstream of the heating cylinder. In this way, it is possible to determine the starting end of the placement zone of the fiber material on the heating cylinder. The nature of the turning mechanism prevents the treatment agent from already settling on the turning mechanism. Rather, the treatment agent remains on the fiber material and can then be dried in a heated cylinder.

It is preferred that the air stream is heated. Accordingly, heat is also supplied to the side of the fiber material that does not contact the heating cylinder. Another advantage of this is that heat radiation from the heating cylinder to the environment is reduced, which again improves the utilization of the heat released from the heating cylinder by the fiber material. This also reduces energy consumption and thus costs.
Preferably, the air flow is directed tangential to the heating cylinder in the inlet region. Such a flow occurs, for example, when the air flow is directed to the circumferential surface of the heating cylinder only at one or a few positions in the circumferential direction. There, the fiber material is pressed relatively strongly against the heating drum by the air flow. However, the air flow can also reach other regions of the heated cylinder surface from which the air flow then flows substantially tangentially. This is particularly advantageous in the inlet region. This is because the air flow can then peel off the air layer attached to the fiber material that reaches it. In this way, the air carried by the air stream and utilized for drying the fiber material can be conditioned as desired.

Preferably, the air stream air is at least partially circulated. This is advantageous from an energy point of view, especially in the case of a heated air stream. Certainly not all air can be recovered for re-addition of fiber material. Air once added to the fiber material often also undergoes constant cooling. Nevertheless, the air guided in the circulation path still has a certain heat content, and no heat needs to be supplied, and this heat content can be reused.
Preferably, an air flow is supplied in the peripheral area of the heating cylinder and discharged parallel to the axis of the heating cylinder. Along with that, the air flow can press the fiber material against the peripheral surface of the heating cylinder, and this action is not offset by the exhausted air.

Preferably, the air flow is guided in a housing surrounding the heating cylinder over at least a part of its peripheral surface. Another advantage of this housing is that a certain thermal shielding can be achieved here and less heat energy is released to the surroundings. On the other hand, it saves a lot of energy. On the other hand, the surroundings are not heated so strongly, which positively affects the working conditions around the apparatus.
Preferably, the fiber material is irradiated upstream of the heating cylinder. Depending on the treatment agent used, specific effects can be produced by irradiation. If it is desired to remove only the volatile or aqueous components of the treatment agent, for example, heat can already be supplied with irradiation. If another treatment agent is used, for example-on the premise of suitable irradiation-a chemical conversion process can be added, in which case the conversion process proceeds upon drying on a heated cylinder.

In this case, preferably, thermal radiation is used for irradiation. Thermal radiation, i.e. infrared radiation, can be generated relatively easily, with little danger in handling and will increase the temperature of the fiber material. Thus, relatively quick drying can be achieved with the heat additionally supplied by the heating cylinder.
Preferably, an air flow is utilized for turning. The turning can be done in a non-contact manner with an air flow. That is, there is no possibility that the processing agent is peeled off by the turning mechanism or deposited on the turning mechanism during turning. For turning, for example, so-called “air turns” can be used which guide the fiber material on an air cushion.

Preferably, the air flow is temperature controlled. The treatment agent can be similarly affected by adjusting the temperature. This temperature control can be, for example, cooling for immobilizing various components of the treatment agent, or, in other words, heating for performing a kind of preliminary drying.
The problem is that in the apparatus of the type described at the beginning, an air flow generating mechanism for generating an air flow toward the fiber material in contact with the heating cylinder is provided, and a turning mechanism is disposed upstream of the heating cylinder. This turning mechanism is solved by satisfying at least one of the conditions that the non-contact operation, the anti-adhesion surface, and the temperature are controlled.

  As already mentioned above in connection with the method, the air stream can press the fiber material against the peripheral surface of the heating cylinder at a constant pressure, thus improving the heat transfer between the heating cylinder and the fiber material. . The better this heat transfer, the better the energy yield. In that case, more processing agent can be evaporated in the same time, or less heat energy can be spent if the same amount of processing agent is desired to evaporate. The turning mechanism can define the winding start, and the treatment agent does not stain the turning mechanism too strongly.

Preferably, the air flow generation mechanism has a heating mechanism. This heating mechanism can be used to heat the air stream. If the air stream has a similarly high temperature, not only heat is released to the fiber material from the side of the heating cylinder, but also other heat sources, ie heated air of the air stream, are available. This air in the air stream can also be used to carry out the already evaporated components of the treatment agent. This reduces the vapor pressure of these components around the fiber material, so less thermal energy is required to further evaporate these components from the treating agent adhering to the fiber material.
Preferably, the air flow generating mechanism directs the air flow tangential to the heating cylinder at least in the inlet region. The air stream can then release air from the surroundings from the fiber material in this inlet region. With this measure, the air additionally used for drying in the air stream can be adjusted to achieve an optimum drying result.

Preferably, the air flow generating mechanism has a housing that at least partially surrounds the heating cylinder. This housing can suppress heat radiation to the surroundings to a slight extent. The housing at the same time allows the air flow to be guided as desired so that a good situation occurs for the drying of the fiber material.
Preferably, the housing has at least one air supply port arranged in the axially extending region of the heating cylinder and at least one exhaust port arranged in the front wall of the housing. At the same time, the air inlet directs the air flow into the housing. This air flow creates pressure on the fiber material in the direction of the heating cylinder. The air added to the fiber material can then escape from the side through the exhaust. The exhaust port is arranged in the front wall of the housing, and this front wall faces substantially perpendicular to the axis of the heating cylinder. In this way, an exhaust direction parallel to the axis of the heating cylinder can be generated.

Preferably, the intake port and the exhaust port are connected to each other via a circulation path. Transfer means such as a ventilator is disposed in the circulation path. Even if not all the air in the air flow can be guided in the circuit, this provides a considerable savings by energy recovery. The air drawn from the housing through the exhaust port still has a high temperature and thus has a high heat content that can be utilized for other processing of the fiber material.
Preferably, an irradiation mechanism acting on the fiber material is arranged upstream of the heating cylinder. As mentioned above in connection with the method, the fiber material is irradiated before it is contacted on the heating cylinder in order to achieve certain functions within the treatment agent or to simply preheat the fiber material with the treatment agent. can do.

In this case, the irradiation mechanism is preferably formed as an infrared radiator. Such infrared radiators can be sufficiently arranged on both sides of the fiber material, and the fiber material can be heated by directing heat radiation to the fiber material.
Preferably, the turning mechanism is formed as an air jet turning mechanism. Such an air jet turning mechanism is also known by the name “air turn” and produces an air cushion. When turning, the fiber material is placed on or supported by the air cushion. The air cushion must of course be updated continuously. In other words, the air must be replenished continuously.

In that case, preferably, the air jet turning mechanism has a temperature adjusting mechanism. This temperature adjustment mechanism can heat or cool the air supplied to the air cushion. When cooled, the components of the processing agent can be fixed and the possibility of depositing on the heating cylinder is reduced. Instead, the air can be warmed, resulting in a kind of pre-drying.
The present invention will be described below with reference to the drawings based on preferred embodiments.

An apparatus for sizing the fiber material is shown in section II in FIG. It is a top view of an apparatus and shows an outline in part. The 1st structure of a turning mechanism is shown with an enlarged view. The 2nd structure of a turning mechanism is shown with an enlarged view.

The invention is described below on the basis of application of a sizing agent. In this case, the sizing agent is a treatment agent. However, the invention can be applied in other cases, for example when dyeing or printing fiber materials or simply washing fiber materials.
The invention will be described below on the basis of the fiber material in the yarn feeder. However, the present invention can also be applied to other forms of fiber material, for example, planarly formed fiber material that has been pre-woven, knitted, braided or otherwise manufactured.

The apparatus 1 for sizing the fiber material 2 in the form of a yarn feeder has a sizing agent application part 3, and the sizing agent is added to the fiber material 2 in this application part. The sizing agent can have various configurations. For example, the sizing agent can be a dispersion in which the sizing agent is dispersed in a carrier liquid, or it can be directly a liquid sizing agent. The sizing agent can also be a foam or a paste. In any case, the fiber material 2 is wetted or at least humidified when the sizing agent is applied. Regardless of the mode of the sizing agent and the method of applying the sizing agent to the fiber material 2, the fiber material 2 needs to be dried after the application of the sizing agent.
For drying, the fiber material 2 is guided through two heating cylinders 4,5. Turning mechanisms 6 to 9 are provided to hold the fiber material 2 with the heating cylinders 4 and 5 over the largest peripheral surface portion. The turning mechanisms 6 to 9 are shown as rollers in FIG. However, the turning mechanism may have other aspects, as will be described in more detail later. The heating cylinder is heated by using, for example, steam brought into the heating cylinders 4 and 5. The heating cylinders 4 and 5 have a high surface temperature and can release heat to the placed fiber material 2. This heat also heats and evaporates the sizing agent liquid adhering to the fiber material 2, and finally the sizing agent only remains on the yarn of the fiber material 2.

The turning mechanisms 6 to 9 are arranged so that the fiber material 2 is wound around the heating cylinders 4 and 5 over as large a portion of the peripheral surface as possible. The turning mechanism 6 defines a winding start around the heating cylinder 4, and the turning mechanism 7 defines a winding end around the heating cylinder 4. Similarly, the turning mechanism 8 defines a winding start around the heating cylinder 5 and the turning mechanism 9 defines a winding end around the heating cylinder 5. The turning mechanisms 6 to 9 can be displaceable so that the winding angle around the heating cylinders 4 and 5 can be changed. However, in general, it is advantageous if the fiber material 2 is wound around the heating cylinders 4 and 5 over the largest possible portion of the circumferential surface.
Re-drying cylinders 10 to 13 are arranged on the downstream side of the heating cylinders 4 and 5 in the traveling direction of the fiber material before the fiber material advances from the apparatus at the outlet 14.

The heating cylinders 4, 5 are at least partly surrounded by a housing 15. The housing 15 encloses the heating cylinders 4 and 5 over more than half of their peripheral surfaces.
The housing 15 is connected to an air supply passage 16, and this air supply passage is connected to the air supply ports 19 and 20 of the housing 15 through two branches 17 and 18. The air supply passage 16 is shown interrupted in FIG. 2 so that other components of the device 1 can be recognized.
Both the air inlets 19 and 20 are arranged so as to face the peripheral surfaces of the heating cylinders 4 and 5. In that case, the air flow formed by the air flowing in the air supply passage 16 is directed to the peripheral surfaces of the heating cylinders 4 and 5 through the air supply ports 19 and 20. By this air flow, the fiber material 2 is pressed against the peripheral surfaces of the heating cylinders 4 and 5 with high pressure.
The air supply passage 16 is connected to the heating mechanism 21, and the air fed into the housing 15 through the air supply passage 16 can be heated. The heated air also contributes to bringing heat into the fiber material 2 so that drying is promoted.

At the same time, the air flow in the housing 15 is directed to impinge on the fiber material 2 in the tangential direction with respect to the heating cylinder 4 in the inlet region, ie downstream of the first turning roller 6 in the running direction. Thus, the supplied air can be separated from the air adhering to the fiber material 2, and the air used to add to the fiber material 2 inside the housing 15 is appropriately conditioned air. Can be easily secured. Similarly, the air supplied to the second heating cylinder 5 through the air supply port 20 naturally adds a region on the downstream side of the turning roller 8 in the traveling direction, and the air can be peeled off from the fiber material 2 there.
The air supply passage 16 is connected to a blower 22 driven by a motor 23 in order to generate an air flow.

As can be seen in particular from FIG. 2, both inlets 19, 20 are arranged to pour into the housing 15 in the middle of the axial extension of the heating cylinders 4, 5. Most of the air supplied in this way is taken out from the housing 15 through the exhaust ports 24 to 26 connected to the exhaust passage 27. For this reason, the exhaust passage 27 is connected to the exhaust blower 28, and this exhaust blower sucks the exhaust from the housing 15 and transfers it into the filtering mechanism 29. Air is sent from the filtering mechanism 29 to the blower 22. Therefore, a passage portion 30 that connects the blower 22 to the filtration mechanism 29 is provided. In other words, any part of the air is guided in the circulation path.
The exhaust ports 24, 25, and 26 are disposed on the front wall 31 of the housing. The front wall 31 extends parallel to the front surfaces of the heating cylinders 4 and 5. At that time, the exhaust ports 24 to 26 are heated so that there is no overlap between the exhaust ports 24 to 26 and the heating cylinders 4 and 5 in parallel with the axis of the air supply ports 19 and 20, or at most a slight overlap occurs. Located next to cylinders 4 and 5.

  Two infrared radiators 32 and 33 disposed between the application unit 3 and the first turning mechanism 6 generate heat radiation. This heat radiation is directed to both sides of the fiber material 2. Due to the heat radiation from the infrared radiators 32, 33, the fiber material 2 coated with the sizing agent is already at a high temperature so that a part of the liquid used to apply the sizing agent can already evaporate. Depending on the treatment agent, other radiation generators using other radiation can of course be used. It would be conceivable to generate, for example, ultraviolet radiation to cause a specific chemical process within the treatment agent.

FIG. 3 shows a first configuration of the turning mechanism 6. The remaining turning mechanisms 7 to 9 can be formed exactly the same. However, the turning mechanism can be simply formed as a turning roller.
The turning mechanism 6 has a turning roller 34 with a surface 35. On this surface 35, for example, an anti-adhesion coating made of polytetrafluoroethylene is arranged. This anti-adhesion coating prevents sizing agent or another treatment agent from depositing on the diverting roller 34 and causing injury over time. Naturally, the surface 35 of the turning roller 34 can be formed so that it does not adhere otherwise.
The heating mechanism 36 acts on the surface 35 so that the surface 35 is heated during operation. In that case, the heat of the surface 35 is transferred to the fiber material 2, which again prevents the sizing agent or another treatment agent from adhering to the turning roller 34. Depending on the processing agent used, it may be meaningful to use a cooling mechanism instead of the heating mechanism 36 when the cooling of the diverting roller 34 prevents the deposition of sizing agent or another processing agent. The turning roller 34 can be temperature adjusted in another way, for example, by sending a temperature adjusted liquid or temperature adjusted gas from the inside.

FIG. 4 shows a second configuration of the turning mechanism 6. The turning mechanism 6 has an air jet turning mechanism 37, which is also referred to herein as an “air turn”. The air jet turning mechanism 37 has a housing 38, and the side of the housing facing the fiber material 2 is formed in a substantially cylindrical shape. A plurality of passages 39 pouring on this side are supplied from the supply passage 40, which extends over the length of the housing 38 (perpendicular to the plane of the drawing). The passages 39 are naturally distributed not only over the side of the housing 38 facing the fiber material 2 as shown, but also over the length of the housing 38.
The supply passage 40 is supplied with air supplied by the blower 41 at a high pressure. A temperature adjustment mechanism 43 is disposed in a pipe line 42 between the blower 41 and the supply passage 40, and this temperature adjustment mechanism heats or cools the air flow discharged through the passage 39. The mode of temperature control depends on the sizing agent or another processing agent used.

  The capacity of the device 1 can be significantly increased by the illustrated processing method. Since a relatively large amount of fiber material 2 can be dried per hour, the fiber material 2 can be sized at a high speed. At the same time, less energy is required to dry the fiber material 2 per area, saving energy costs. The length of the device can be kept relatively short.

Claims (20)

A method for treating a fiber material (2), wherein a treating agent is applied to the fiber material (2) and the fiber material (2) is dried on at least one heating cylinder (4, 5) In things,
The fiber material (2) in contact with the heating cylinder (4, 5) is subjected to a process of adding an air flow, and the fiber material has a turning mechanism (6) upstream of the heating cylinder (4, 5). And a process guided through
The method is characterized in that the turning mechanism satisfies at least one of the following conditions: operating in a non-contact manner, having an adhesion preventing surface, and being temperature controlled.   2. The method of claim 1, wherein the air stream is heated.   3. Method according to claim 1 or 2, characterized in that the air flow is directed tangential to the heating cylinder (4, 5) in the inlet region.   4. A method according to any one of the preceding claims, characterized in that the air of the air stream is at least partially guided in the circulation path.   The air flow is supplied in a peripheral area of the heating cylinder (4, 5) and discharged parallel to the axis of the heating cylinder (4, 5). The method according to claim 1.   6. The method according to claim 1, wherein the air flow is guided in a housing (15) surrounding the heating cylinder (4, 5) over at least part of its peripheral surface.   The method according to any one of claims 1 to 6, characterized in that the fiber material (2) is irradiated upstream of the heating cylinder (4, 5).   8. Method according to claim 7, characterized in that thermal radiation is used for the irradiation.   9. A method according to any one of claims 1 to 8, characterized in that an air flow is used for turning.   10. The method of claim 9, wherein the air flow is temperature controlled. An apparatus for treating a fiber material (2), comprising a treatment agent application part (3) and a drying part, wherein the drying part comprises at least one heating cylinder (4, 5) In what the fiber material (2) abuts on the peripheral surface of the heating cylinder,
An air flow generation mechanism (15-22) for generating an air flow toward the fiber material (2) mounted on the heating cylinder is provided;
A turning mechanism (8) is disposed upstream of the heating cylinder (4, 5),
The device is characterized in that the turning mechanism satisfies at least one of the conditions that it operates in a non-contact manner, has an anti-adhesion surface, and is temperature-controlled.   12. Device according to claim 11, characterized in that the air flow generating mechanism (15-22) comprises a heating mechanism (21).   13. Device according to claim 11 or 12, characterized in that the air flow generating mechanism (15-22) directs the air flow tangentially to the heating cylinder (4, 5) at least in the inlet region.   14. Apparatus according to any one of claims 11 to 13, characterized in that the airflow generating mechanism (15-22) comprises a housing (15) which at least partly surrounds the heating cylinder (4, 5).   The housing (15) is disposed in at least one air supply port (19, 20) disposed in an axially extending region of the heating cylinder (4, 5) and a front wall (31) of the housing (15). 15. Device according to claim 14, characterized in that it has at least one outlet (24-26).   16. The device according to claim 15, characterized in that the intake (19, 20) and the exhaust (24-26) are connected to each other via a circulation path (30).   The irradiation mechanism (32, 33) acting on the fiber material (2) is disposed upstream of the heating cylinder (4, 5), according to any one of claims 11 to 16. apparatus.   18. Device according to claim 17, characterized in that the irradiation mechanism (32, 33) is formed as an infrared emitter.   19. Device according to any one of claims 11 to 18, characterized in that the turning mechanism (6) is formed as an air jet turning mechanism (37).   20. The device according to claim 19, wherein the air jet turning mechanism (37) comprises a temperature adjustment mechanism (43).

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