WO2016198235A1

WO2016198235A1 - Method and device for producing a textile surface structure equipped with a degreasing agent

Info

Publication number: WO2016198235A1
Application number: PCT/EP2016/060923
Authority: WO
Inventors: Martina Winkelkötter
Original assignee: Eurotec Vertriebsgesellschaft M.B.H.
Priority date: 2015-06-12
Filing date: 2016-05-13
Publication date: 2016-12-15
Also published as: DE102015109446A1

Abstract

The invention relates to a method and a device for producing a textile surface structure (2) equipped with a degreasing agent (1). In this case, the degreasing agent (1) is applied onto at least one surface of the surface structure (2). For this purpose, the degreasing agent (1) is introduced into the surface structure (2) by means of a negative pressure generated on the opposite side.

Description

Method and device for producing a textile fabric equipped with a degreasing agent

Description:

The invention relates to a process for the production of a textile fabric equipped with a degreasing agent, according to which the degreasing agent is applied to at least one surface of the fabric. Degreasing agents typically serve to clean metallic surfaces or, generally, the surface of a substrate of oils, fats or similar hydrophobic constituents present there. Such oils or greases regularly wet the surface in question following upstream mechanical processing steps. The surface or substrate to be cleaned in each case can be a metal surface or even a plastic surface. Combinations are also conceivable.

DE 20 2004 021 666 U1, which is assigned to the Applicant, describes a system for removing such hydrophobic constituents from surfaces of a substrate. For this purpose, a dry powder of predetermined porosity is applied by means of a spraying device. In addition, a detachment unit is provided for removing the dry powder having the hydrophobic constituents adsorbed in the pores. The well-known system has proven itself, but makes only sense in the cleaning of large areas.

In addition, WO 2014/79899 A1 describes a degreasing mixture which is or may also be part of a cleaning cloth. The cleaning cloth has at least one cloth layer of a fiber material, wherein the cloth layer additionally contains the degreasing mixture in question. To In the example described two fabric layers are realized, between which a layer of the degreasing mixture is arranged.

A cleaning cloth is also described in DE 1 519 418 A. The cleaning cloth consists of a highly absorbent web base and a coating of the dry cleaning agent. For the preparation of the cleaning cloth, a slurry of the coating agent is first formed. The pulp in question is then applied to the pad by roller coating or by dipping the web in the slurry. On the one hand, this is laborious and, on the other hand, fraught with the problem that virtually only pulverulent degreasing agent can be prepared and applied in slurry form. If the degreasing agent is not in powder form, an additional painting process must be provided and is obligatory. Finally, DE 10 2010 012 193 A1 describes a cleaning cloth made of nonwoven fabric, which is used in industrial and household cleaning. The cleaning cloth is equipped with a carrier layer of a fiber floor. The fiber floor is bound in selected areas with the help of a binder. Also in this case, at least one active substance is bound to the carrier layer with the aid of the binder. As binders predominantly polymers are used and the mixture of the degreasing agent and the binder is typically applied in the form of a dispersion. Since polymers are used in this context, it can not be ruled out that the cleaning cloth thus treated is limited in terms of the effectiveness of the degreasing agent, because the degreasing agent is closed by the additional binder in terms of the required pores for receiving the hydrophobic ingredients. In any case, the effect of the degreaser is associated with the known Cleaning cloth may be restricted. Here, the invention aims to provide a total remedy.

The invention is based on the technical problem of further developing such a method for producing a textile fabric equipped with a degreasing agent so that the production is simple and inexpensive and the effectiveness of the degreasing agent applied is not restricted. To solve this technical problem, a generic method in the invention is characterized in that the degreasing applied to at least one side of the fabric and introduced by means of a negative pressure generated on the opposite side in the fabric, usually retracted, is.

In a textile fabric according to the invention is a sheet, which is made of a textile and accordingly has a certain porosity due to production. In fact, the sheet-like textile structure may be a woven fabric, a knitted fabric, knits, braids or even a stitchbonded fabric. Nonwoven fabrics and felts are very particularly preferably used as textile fabrics in the context of the invention, that is to say a nonwoven or felt fabric. A felt fabric is typically made by rolling a nonwoven containing feltable fibers. Due to this walk, the fibers are felted by typically mechanical action. In addition, however, the felting of the fibers can be effected by thermal and / or chemical means. In the case of a nonwoven textile fabric, the procedure is such that such a nonwoven fabric is laid, for example, from textile staple fibers or directly from extruded textile endless fibers. It is both an orientation and a random position of the fibers possible. The fibers of the nonwoven fabric can then be connected to one another by, for example, needlepunching, stitching or by swirling by means of water jets.

Alternatively or additionally, a bond can also be achieved by the action of heat and / or pressure or else with the aid of binders. In addition to continuous fibers, it is of course also possible to use finite fibers or staple fibers for the nonwoven production. The fibers for producing the textile fabric according to the invention are usually synthetic fibers or synthetic fibers, although natural fibers and mixtures are also possible.

As man-made fibers preferably come from a polyolefin, z. B. Polyprophylen (PP), polyethylene (PE) or polyester fibers (PET) and polyamide fibers (PA) are used. The natural fibers may be cellulose fibers, wool fibers or cotton fibers. Likewise fibers of flax, hemp, sisal or the like can be used. The aforementioned fibers can also be mixed with one another in any composition. D. h., It is of course the simultaneous use of chemical fibers and natural fibers for the production of the fabric conceivable and is included according to the invention.

In any case, the textile fabric used according to the invention is distinguished by a defined porosity or significant air permeability, which is measured regularly in accordance with DIN EN ISO 9237. According to the invention, values of at least 200 l / (m ² × s) at one mbar are observed for the textile fabric, more often even more than 500 l / (m ² × s). The thickness of the textile fabric may be in the range of about 0.2 mm to 1 mm. Even larger thicknesses up to 5 mm are possible and are included according to the invention. The basis weight is about 20 g / m ² to 100 g / m ² . Inn maximum even surface masses up to about 250 g / m ² can be achieved. In any case, this applies in general to the starting material of the textile fabric, that is to say before the introduction of the degreasing agent. In any case, the textile fabric in question is designed to be permeable to air overall, so that a negative pressure can be easily generated on the side opposite the applied degreasing agent. In this case, one can typically manage with a negative pressure of a few mbar, for example up to 5 mbar or up to 10 mbar, which can be attributed to the previously stated values for the air permeability of the textile fabrics used according to the invention. Nevertheless, it is possible in this way to suck in the degreasing agent as it were in the surface. It has proven particularly useful when the degreaser is applied in dry form to the fabric. Mostly, the degreaser is in granular and granular form and is applied dry to the sheet. This is generally done binder-free, ie without an additional binder is used. At this point it has been proven that the degreasing agent is electrostatically charged immediately before or during application to the fabric. Additionally or alternatively, the sheet may be electrostatically charged prior to application of the degreaser. For the electrostatic charging of the degreasing agent, customary ionization devices with typically opposing electrodes are used. Such ionization devices are known in principle from another context and are used for example for air treatment, as described in DE 10 2011 081 301 A1. In order to electrostatically charge the degreaser, the degreasing agent, which is regularly dry and in granular or granular form, can be disposed between the degreasing agents two required electrodes are passed and then lands on the sheet. The fabric itself may be charged or not. A particularly good adhesion results in the event that the fabric as well as the degreaser is electrostatically charged. It will be advantageous to work with a different charge for on the one hand the degreaser and on the other hand, the fabric. For example, the individual grains of the degreaser may be negatively charged, whereas, on the other hand, the fabric has a positive charge. Of course, the reverse can also be done.

In any case, the adhesion of the degreasing agent on the at least one side of the textile fabric is thereby supported, so that not only the negative pressure generated on the opposite side provides for the adhesion or must provide.

In principle, the degreasing agent may additionally undergo a thermal treatment after application to the at least one side of the textile fabric together with the fabric. In this case, the fabric with the applied degreasing agent is typically exposed to a heat source. This can be a continuous furnace or an infrared heat source. In this heat treatment, the textile fabric or the fibers used for its presentation is slightly fused, at least on its surface, so that in this way the adhesion of the degreasing agent to or in the textile fabric is favored. Depending on the fibers used, temperatures of perhaps 80 ° C. to 100 ° C. are sufficient, for example, in the case of the previously mentioned synthetic fibers, in any case temperatures which are below or at most close to the melting point of the relevant fiber. In addition, this heat treatment must ensure that it takes place only for a limited time, so that the fiber concerned only superficially melts. Typically, one will limit the heat treatment here to a period of a few seconds.

In this way, the degreasing agent can easily absorb the hydrophobic constituents from the surface of the substrate to be cleaned. Because the dry powder or degreasing agent is usually before with a grain size with particle sizes below 500 μιτι and in particular even with particle sizes of less than 200 μιτι. Grains of this size can easily be immersed in a tex- tile sheet of felt or fleece. For such surface structures typically have a porosity which corresponds to pores having sizes of approximately 100 μm to 500 μm. Consequently, the grain size of the degreasing agent is adapted to the pores or pore size of the textile fabric, so that the textile fabric is predestined for receiving the degreasing agent in question inside. Since the pores in the fabric are not continuous, but are virtually offset from one another layer to layer, the grains of the degreaser are kept properly in pore pockets formed in this way.

In addition, the degreaser or dry powder used has a predetermined porosity and a large internal surface, which can be more than 10 m ² / g as a rule. This large inner surface or porosity of the degreasing agent for receiving the hydrophobic constituents from the surface of the substrate to be cleaned is also not reduced or disturbed by the invention in that any possible binders penetrate into the pores. Because within the scope of the invention is carried out binder-free and the degreaser or dry powder applied without additives on at least one side of the textile fabric.

By the simultaneous suction-side loading of the other side of the Flächengebildes the invention ensures that the degreasing agent in question respectively dry powder penetrates into the fabric and can penetrate.

The felt-like or fleece-like character of the fabric, in conjunction with the pore pockets, ensures that the individual grains are "caught" in the fibers and consequently held purely mechanically in the fabric In addition, the fabric may be guided along the respective substrate in a web-like manner, but it is also possible to cut the fabric into individual wipes or cleaning wipes.

From a procedural point of view, it has proven useful if the fabric is supported on a support during application of the degreasing agent. It is understood that this support is designed to be porous to lattice-shaped, with the help of a vacuum device to produce the required negative pressure below the support. Because the sheet is located on the support and the degreaser is applied to the side opposite the support of the sheet. Typically, the support is a grate or a grid.

In order to intensify the application of the degreasing agent, the fabric can be moved when applying the degreaser. The degreasing agent itself is gravity-assisted on the fabric. Here, a reciprocating motion or a shaking movement of the fabric has proven to be particularly favorable. To put this into practice, the pad may for this purpose be equipped with one or more vibration units. The respective vibration unit may be a vibration motor. In any case, this results in a comparative reduction of the order of the degreasing agent and, at the same time, the penetration of the degreasing agent into the fabric is intensified. In addition, it has proven useful when the fabric is housed to order the degreaser. In this case, it is possible to work with a partial enclosure, which is a suction hood with the vacuum device arranged therein. With the help of the relevant suction hood, a uniform negative pressure can be generated at the side of the textile fabric to be subjected to the negative pressure.

As a rule, however, the fabric for the application of the degreaser is completely enclosed except for any insertion and removal openings. The fabric is introduced into the device or enclosure in question via the insertion opening for equipping with the degreasing agent. The textile fabric, which is subsequently finished with the degreasing agent, leaves the device or housing via the delivery opening. Due to the except for the two described openings complete enclosure of the fabric for and during the application of the degreaser, the invention ensures that the degreaser or dry powder is used efficiently and can also be used. In fact, any degreasing agent sucked in by the vacuum device can be deposited and fed again to a supply unit for the degreasing agent. This ensures a particularly resource-saving operation.

The supply unit for the degreasing agent can supply the degreasing agent or the granular dry powder used at this point, for example, pneumatically or mechanically via a pipe system to an inlet feed nozzle of the housing.

In order to even out the application of the degreasing agent to the textile fabric, it is not only possible to move the support for supporting the fabric during application of the degreasing agent. But comparable movements are also possible with the enclosure. This means, In addition to the support, which is equipped with one or more vibration units, it is also within the scope of the invention to provide the housing with such a vibration unit or with multiple vibration units. In this way, a uniform distribution of the applied degreasing agent on the fabric is ensured and at the same time the penetration of the degreasing agent into the fabric is favored.

The enclosure can be lifted in total by one or more movement units with respect to the fabric, or create on the fabric. In this way, the previously mentioned insertion opening or also the delivery opening can be defined automatically. The trajectory may be one or more pneumatic cylinders. The vibration unit can also be controlled pneumatically, so that in each case a matching pneumatic source can be used for the vibration unit on the one hand and the displacement unit on the other hand. Of course, this is only an example and not restrictive.

The invention also provides an apparatus for producing the fabric equipped with the degreasing agent. The device is equipped with a feed / guide device for the fabric. In the simplest case, this feed / guide device for the fabric is one or more rolls with the aid of which textile fabrics are supplied to the apparatus as, for example, rolls and removed again after the degreasing agent has been applied. In addition, the device in question is equipped with the above-mentioned supply unit for the applied to at least one side of the fabric degreasing. The supply unit ensures by pneumatic and / or mechanical means that the degreasing agent is supplied, for example, from a storage container, starting from the inlet / feed nozzle of the housing. Furthermore, the device has the already mentioned vacuum device, with the help of which the required negative pressure on the feed unit or the inlet / feed nozzle of the housing opposite side of the fabric is generated. For this purpose, the vacuum device is typically arranged in a suction hood. The suction hood is an integral part of the enclosure. The feed / guide device not only has the rollers for driving and advancing the fabric which is regularly present as a roll, but also the previously described support, which is normally designed as a support bottom or support grid ,

Finally, the subject matter of the invention is a device for removing oils, fats or the like hydrophobic constituents from surfaces of the substrate, with the aid of the textile fabric whose preparation has been described above. This device has at least one feed device for the substrate. In this feed device may be a roller assembly of opposing rollers, between which the substrate is guided and transported. In addition, the device in question is equipped with at least one feed guide means for the sheet. The feed guide device also regularly has rollers, by means of which the fabric present as a roll is unwound or wound up. For this purpose, the feed guide device is equipped with at least one unwind roll and a take-up roll. In addition, the fabric is guided as a roll goods in contact with the substrate at this. This can be done simultaneously on a surface of the substrate or on both surfaces of the substrate. For this purpose, the textile fabric is passed as a roll goods together with the substrate through the feed device. By investing the textile fabric in the form of the rolled product on a surface of the substrate or on both surfaces of the substrate is the required cleaning of the relevant surface of the substrate ermöglichst and made available. This is because the degreasing agent previously incorporated in the textile fabric readily absorbs the corresponding hydrophobic constituents, for example oils or greases, which are present on the surface of the substrate.

In this connection, the speed of the substrate advancing device and the speed of the roller arrangement for the sheet and the speed of the unwinding roll and on the winding roll can be adapted to each other. In this case, the substrate on the one hand and the fabric on the other hand passed through the feed device at approximately the same speed, so that no relative movement is observed between the fabric and the substrate. However, it is also possible and within the scope of the invention that the substrate and the sheet are not passed through the feed device uniformly or at the same speed. In fact, for example, the substrate may be passed through the feed device at a faster rate than the sheet. A reverse design is conceivable in which the sheet has a higher speed in the feed device than the substrate. In this way, a relative movement between the substrate and the sheet can be represented, which corresponds to an additional and the removal of the hydrophobic constituents intensifying wiping movement on the surface to be cleaned of the substrate.

As a result, a method and an apparatus for producing a fabric equipped with a degreasing agent are presented, with the aid of which a particularly simple and cost-effective production of the fabric in question succeeds. In addition, depending on the choice of degreasing agent, a significant cleaning effect of an upper surface of a substrate, such as a metal surface or plastic surface are observed. This applies in particular to the case where a degreasing agent is used and used, as described in the applicant's WO 2014/079899 A1.

In fact, the advantageously used degreasing agent is a degreasing mixture with a solvent-free silicate mixture as the main constituent. The silicate mixture itself contains a granular sheet silicate and a granular framework silicate. Up to 90% by weight of the grains contained in the silicate mixture have a particle size of less than 60 μιτι. In addition, the maximum grain size of the granular sheet silicate is smaller than the maximum grain size of the framework silicate. - In principle, of course, other degreasing agents can be used in this context, although the previously described degreasing mixture is particularly preferred.

In addition, the subject matter of the invention is a device for removing oils, fats or the like hydrophobic constituents from surfaces of a substrate by means of the textile fabric equipped with the degreasing agent in question. In the context of this device, the textile fabric in question is guided along on one or both surfaces of the substrate to be cleaned in the form of a roll, so that the degreasing agent incorporated into the textile surface agent can absorb the hydrophobic constituents on the surface of the substrate to be cleaned. In this way, a large-scale and particularly simple cleaning of the respective surfaces is observed and made available. Here are the main benefits.

In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment; show it: 1 shows an apparatus according to the invention for producing a fabric equipped with a degreasing agent and

2 shows a device according to the invention with the aid of which oils, fats or similar hydrophobic constituents of surfaces of a substrate are achieved with the aid of the textile fabric produced in the device according to FIG.

FIG. 1 shows an apparatus for producing a textile fabric 2 equipped with a degreasing agent 1. The degreasing agent 1 in the exemplary embodiment is a dry powder of predetermined grain size. In fact, the grain size in the present case is typically less than 500μηη in diameter, and more preferably less than 20μμηη. Preferably, the diameter of the individual grains is Ι ΟΌμιτι and less. In addition, the degreasing agent 1 according to the invention is an inorganic degreasing agent 1, in particular based on silicate.

In fact, the degreasing agent 1 in the present case is a degreasing mixture of a granular sheet silicate and a granular skeleton silicate. In this case, the degreasing mixture may be formed as described in WO 2014/079889 A1 of the Applicant, is of course not limited thereto. The degreasing agent or granular dry powder 1 in question is applied in the present case to the surface element 1 in question in dry form. In addition, the degreasing agent or dry powder 1 is in granular granular form and is applied to the fabric 2 in this consistency. Finally, the invention works when applying the degreaser 1 total binderless. For this purpose, the degreasing agent 1 is first of all started from a storage container (not shown) via a merely indicated supply. guiding unit 3 fed to an inlet / feed nozzle 4. The feed unit 3 can operate pneumatically and / or mechanically in the present case. If the feed unit 3 operates pneumatically, the degreaser or dry powder 1 is conveyed with compressed air up to the inlet / feed port 4. In an alternative or supplementary mechanical promotion, for example, a screw conveyor can be provided. Starting from the inlet ZAufgabestutzen 4 trickles the degreasing 1 gravitationally supported on the feed unit 3 facing surface of the fabric 2. The inlet / feed nozzle 4 is part of a housing 5, 6. In fact, the housing 5, 6 from an upper hood 5 and a lower suction hood 6 together, which are opposed in the embodiment with the contrast central fabric between them. Both hoods 5, 6 taken together form the already mentioned housing 5, 6.

It can be seen that the inlet / feed nozzle 4 widens nozzle-shaped during the transition into the adjoining hood 5. As a result, the degreasing agent 1 supplied via the inlet / feed nozzle 4 is applied evenly distributed on the textile surface means 2. The suction hood 6 which adjoins the fabric on the underside side tapers correspondingly like a nozzle, as the hood 5 expands and opens into a suction nozzle 7. The suction nozzle 7 is connected on the output side to a vacuum device 8, which is a conventional vacuum source can act, for example, a rotary valve piston pump, with which in the suction hood 6, a negative pressure can be generated. In the context of the present invention, it is typically sufficient if a negative pressure of a few mbar (less than 10 mbar) is observed with respect to the external air pressure within the suction hood 6. In order to intensify the adhesion of the degreasing agent 1 on the textile fabric 2, an ionizing device 19 can still be provided in the interior of the capping hood 5, which is indicated only schematically in FIG. The ionization device 19 is composed in the embodiment of two opposing electrodes, between which an electric field is applied. In the present case, the two electrodes of the ionization device 19 are oriented predominantly vertically, so that the degreasing agent 1 fed in via the inlet / feed nozzle 4, with gravity support, trickles between the two electrodes of the ionization device 19 onto the textile fabric 2.

When passing through the ionization device 19, the degreasing agent 1 is charged electrostatically. As a result of the electrostatic charging, the degreasing agent 1 then adheres particularly well to the textile fabric 2. This is true even when the fabric 2 itself is not loaded. The textile fabric 2 can also be electrostatically charged. For this purpose, a further ionization device 20 may be provided, which is also indicated in FIG. With the aid of this further second ionization device 20 with mainly horizontally oriented electrodes, the textile fabric 2 is charged electrostatically. For this purpose, the textile fabric 2 is passed between the two electrodes of the further ionization device 20. The overall procedure will be that the degreasing agent 1 on the one hand and the textile fabric 2 on the other hand are electrically charged in opposite directions, in order subsequently to improve the adhesion of the degreasing agent 1 to the at least one side of the textile fabric 2.

Finally, FIG. 1 also shows on the output side a heat source 21 with the aid of which textile fabrics 2 coated with the degreasing agent 1 after the treatment in the interior of the housing 5, 6 are provided. is heated together. The heat source 21 is in the embodiment and not restrictive to a continuous furnace. This provides for a short-term heating of the textile fabric 2 with the degreasing agent 1 applied on the one side or degreasing agent 1 introduced into the fabric 2. As part of this brief heating, the fibers of the textile fabric 2 surface melt on the surface, so that adhere adhesively to this the grains of degreaser 1. For this purpose, the heat source 21 has a temperature which is slightly below or close to the melting temperature of the relevant fibers for the textile fabric 2. Since it is often plastic or chemical fibers at this point, temperatures ranging from about 80 ° C. to 100 ° C. or even up to 150 ° C., depending on the melting temperature of the fiber in question, are sufficient. The treatment time is in the range of a few seconds. Since the degreasing agent 1 at this point is one which predominantly has a solvent-free silicate mixture as the main constituent, only the fibers of the textile fabric 2 are melted because the degreasing agent 1 has a much higher melting temperature. In this way, the adhesion of the degreasing agent 1 on or in the textile fabric 2 is improved and any trickling out of the degreasing agent 1 is largely prevented.

Both the extraction hood 5 and the suction hood 6 are each equipped with a traversing unit 9, which is merely indicated in FIG. 1. The trajectory 9 is in the exemplary embodiment to one or more pneumatic cylinders. With the help of the respective track 9, the hood 5 as well as the suction hood 6 can be moved in the direction of each indicated double arrow and in the present case vertically. As a result, both the extraction hood 5 and the suction hood 6 in each case in contact with the interposed textile fabrics 2 are brought or even removed from the textile fabric 2 in question again.

In this way, the inlet side of the housing 5, 6 an insertion opening 10 is defined as well as the output side of the housing 5, 6 a Ausführöffnung 11. About the insertion opening 10, the textile fabric 2 is placed in the housing 5, 6 and within the housing 5, 6 equipped with the degreaser 1. In fact, the design is such that the degreasing agent or dry powder 1 penetrates into the textile fabric 2 and in this way adheres to the textile fabric 2 and is transported along with it. As a result, the textile fabric 2 acts as a flat carrier for the degreasing agent 1, which in turn is porous and has a significant inner surface, as has already been described in the introduction. In this way, the degreasing agent 1, for example, oils or fats or similar hydrophobic components of surfaces of a substrate, such as a metal strip or plastic strip 12 remove, as will be explained in more detail below and with reference to FIG. The textile fabric 2 is in the embodiment of FIG. 1 before as a rolled product. The roll product or the relevant textile fabric 2 is thereby supplied and removed by means of a feed / guide device 13, 14, 15, via the insertion opening 10, fed into the housing 5, 6 and the discharge opening 11 from the housing 5, 6 discharged.

The feed / guide device 13, 14, 15 in the present case has a roller arrangement 13, 14. In fact, a take-off roll 13 and a take-up roll 14 for the textile fabric 2 are observed in this context. The textile fabric 2 can then be used further as a roll product, as shown in FIG. 2 and explained in greater detail below. Alternatively, the roll product but also in any large wipes and especially wipes are cut, which is not shown in detail.

1 also shows a support 15 for the textile fabric 2 as part of the feed / guide device 13, 14, 15th

In the case of this edition 15, the exemplary embodiment is a support grid or grid in the presently horizontal arrangement, with the aid of which the textile fabric 2 is supported when the degreasing agent 1 is applied. In fact, the textile fabric 2 according to the exemplary embodiment is a textile fabric web made of fleece or felt with a high air permeability, as has already been described in the introduction. As a result, a significant negative pressure can be generated in the interior of the suction hood 6 with the aid of the vacuum device 8, which, as it were, "sucks in" the degreasing agent 1 applied to the textile fabric 2.

In fact, the overall procedure is such that the degreasing agent 1 in the exemplary embodiment is applied to the surface of the textile fabric 2 in question in the direction of the inlet / feed nozzle 4 or the feed unit 3. On the opposite side of the textile fabric 2 now negative pressure is generated, by means of which the degreasing agent 1 is introduced into the fabric 2. In fact, on the one hand, the grain size of the degreasing agent or of the dry powder 1 and, on the other hand, the size of the pores in the textile fabric 2 are adapted to one another or correspond to one another so that the individual grains of the degreasing agent 1 can dive into the interior of the textile fabric 2 as it were , On the one hand gravity assisted and on the other hand additionally by the vacuum generated on the opposite side by means of the vacuum device. 8 The process of the mechanical connection of the degreasing agent or of the granular dry powder 1 with the textile fabric 2 is intensified within the scope of the exemplary embodiment in that in the present case the support or the support bottom 15 is equipped with a vibration unit 16. In the vibration unit 16 is a vibration motor, which may work eccentrically and the support or the respective Auflagerost 15 vibrated. The same then of course also applies to the textile fabric 2 deposited on the support 15 and the grains of the dry powder or degreasing agent 1 scattered thereon. As a result, an evenly distributed distribution of the degreasing agent 1 on the fabric 2 in question is achieved. In addition, a further vibration unit 16 can also be provided on the expansion hood 5 and finally the suction hood 6, as indicated in FIG. 1. It is thereby achieved that the entire housing 5, 6 is moved back and forth with the support rack 15 clamped between the two hoods 5, 6 and the textile fabric located thereon and likewise clamped in order to move the individual grains of the degreasing agent 1 into the Inner to transfer the textile fabric 2 in question. In the interior, the grains in question are held by adhesive forces and can develop their desired adsorbing effect in the subsequent cleaning process. Additional seals D ensure that, on the one hand, the hood 5 and, on the other hand, the suction hood 6 abut tightly against the relevant support bottom 15 and at the same time the textile fabric 2 is held on the support bottom 15 in the described vibration process. The two seals D are each end of the hood 5 and the suction hood 6 is provided, in each case facing the Auflagerost 15. For the fixed contact of the two hoods 5, 6 with the interposed Auflagerost 15 together ensures each of the track 9 and ensure the This point indicated pneumatic cylinder 9. For the supply of the pneumatic cylinder 9, a pneumatic source, not shown, is provided. This pneumatic source may also drive the pneumatically operating respective vibration motor or the respective vibration unit 16, so that it is possible to resort to a common pneumatic source.

Referring now to Figure 2, an apparatus for removing oils, fats, or the like hydrophobic components from surfaces of the substrate 12 is shown. The substrate 12 in the exemplary embodiment according to FIG. 2 is a continuous metal strip. Alternatively or additionally, it may also be a plastic band. The respective hydrophobic constituents are removed from the surface of the substrate or metal strip 12 in question with the aid of the textile fabric 2, the preparation of which has been described above with reference to FIG. 1. The device shown in FIG. 2 has at least one feed device 17, which is a roller arrangement of opposing rollers 17. With the help of the feed device or roller assembly respectively the opposite rollers 17, the metal strip 12 is continuously driven along the arrow direction and happens in this case a housing 18, which is basically unnecessary.

In addition to the feed device 17 can be seen also a feed / guide means 13, 14 for the finished with the degreaser 1 textile fabric 2, which is constructed comparable to the feed / guide means 13, 14 in the context of the illustration of FIG In this case too, an unwinding roller 13 is provided for receiving the textile fabric 2 designed as a rolled product. Starting from the unwinding roller 13, the textile fabric 2 is guided together with the substrate or metal strip 12 by the feed device 17 and the output side of the feed device 17 by means of a take-up reel 14 provided there again. Since in the illustration of FIG. 2 both Surfaces of the continuous metal strip 12 are cleaned simultaneously, there are two feed / Führungseinrichtrungen 13, 14 associated with each surface of the metal strip 12 and each surface of the metal strip 12. The fabric 2 or the rolled product is thereby guided overall in contact with the substrate or the continuous metal strip 12 along the latter, at least in the area of the feed device 17. The overall design is such that the speed of one hand the feed device 17 for the substrate or metal strip 12 and on the other hand, the speed of the feed / guide device 13, 14 for the textile fabric 2 in the form of the roll goods correspond to each other or adapted to each other. In principle, however, it is also possible to work with divergent speeds at this point, so that in this case the textile fabric 2 carries out a relative wiping movement relative to the substrate 12, thereby absorbing the hydrophobic constituents present on the surface to be cleaned from the textile fabric 2 and be stored in the degreaser 1 or adsorbed in the local internal cavities. The device for producing the textile fabric 2 as a roll product in the context of FIG. 1 may be connected upstream of the device for removing oils, fats or the like hydrophobic constituents from surfaces of the substrate 12 according to FIG. 2. In fact, the roll goods may be wound up on the take-up roll 14 in the frame of FIG. 1 and subsequently be available as unwinding roll 13 within the scope of the device according to FIG. In principle, it is also possible for only the unwinding roll 13, as shown in FIG. 1, to be combined with the winding reel 14 in the context of the device according to FIG. 2. In this case, the textile fabric 2 is not first rewound after its manufacture and equipment with the degreasing agent 1, but brought directly into contact with the substrate or the continuous metal strip 12 and then by the feed device 17 is passed. On the output side of the feed device 17, the textile fabric 2 or the corresponding rolls are then wound up on the take-up roll 14 and may finally be disposed of and / or reprocessed.

The reprocessing can be carried out in such a way that the fabric 2 is fragmented and the fabric 2 as such and the degreasing agent 1 are separated from one another, for example by sighting processes which exploit the different specific weight. Moreover, it is within the scope of the invention to deposit any degreasing agent 1 sucked by the vacuum device 8 and to supply it to the feed unit (again).

Overall, the textile fabric 2 can be in the form of a roll and provide the desired degreasing, as shown in FIG. 2. Alternatively or additionally, the fabric 2 may also be a cloth of any size. In this case, the textile fabric 2 is used with the introduced degreaser 1, for example, for the manual manual degreasing and cleaning of surfaces. This is particularly recommended when complicated and different geometries of the surface to be cleaned are observed.

Claims

claims:

1. A process for producing a textile fabric (2) equipped with a degreasing agent (1), whereafter the degreasing agent (1) is applied to at least one surface of the fabric (2), d the degreasing agent (1) is applied to at least one side of the textile fabric (2) and introduced into the fabric (2) by means of a negative pressure generated on the opposite side.

2. Method according to claim 1, characterized in that the degreasing agent (1) is applied in dry form to the fabric (2).

3. The method according to claim 1 or 2, characterized in that the degreasing agent (1) in granular and granular form on the sheet (2) is applied.

4. The method according to any one of claims 1 to 3, characterized in that the degreasing agent (1) is applied binderless on the sheet (2), wherein preferably the degreasing agent (1) and / or the sheet (2) are electrostatically charged.

5. The method according to any one of claims 1 to 4, characterized in that the sheet (2) during application of the degreasing agent (1) on a support (15) is supported.

6. The method according to any one of claims 1 to 5, characterized in that the sheet (2) for the order of the degreasing agent (1) is housed.

7. An apparatus for producing a textile fabric (2) equipped with a degreasing agent (1), in particular for carrying out the method of Driving according to one of claims 1 to 6, with a feed / guide device (13, 14, 15) for the sheet (2), and with a feed unit (3) for the on at least one side of the sheet (2) applied degreasing agent ( 1), that is, on the other side of the sheet (2) opposite to the feed unit (3), a vacuum device (8) is provided, which introduces the degreasing agent (1) into the sheet (FIG. 2) generates sucking negative pressure.

8. Apparatus according to claim 7, characterized in that the vacuum device (8) is arranged in a suction hood (6).

9. Apparatus according to claim 7 or 8, characterized in that the feed / guide device (13, 14, 15) has a support (15) for the sheet (2).

10. Device for removing oils, fats or the like hydrophobic constituents from surfaces of a substrate (12) by means of a textile fabric (2) produced according to one of claims 1 to 6, with at least one advancing device (17) for the substrate (12). , and with at least one advancing / guiding device (13, 14, 15) for the fabric (2), that said fabric (2) is in contact with the substrate (12 ) is guided along this.