DE102022105276A1 - METHOD OF MAKING A FIRE RETARDANT CASE, FIRE RETARDANT CASE AND SYSTEM WITH A FIRE RETARDANT CASE - Google Patents

Abstract

A method for producing a fire-retardant container (100) comprises an implementation step and an application step. In the implementation step, a surface treatment is carried out on at least one surface of an unprocessed container (110) made of plastic, in particular made of a thermoplastic, in order to produce a treated surface (115) of the unprocessed container (110). In the application step, a fire retardant coating (120) is applied to the treated surface (115) to produce the fire retardant container (100).

Description

The present approach relates to a method for producing a fire-retardant container, for example for a rail vehicle, to a fire-retardant container and to a system with a fire-retardant container, for example a windshield wiper washer system for a rail vehicle.

Current flame retardant plastic containers only conform to outdated fire safety standards. If they are made of plastic, the wash water tanks currently used for windshield wiper systems for rail vehicles are made of a material that is no longer permitted. Therefore, currently a welded metal construction is mainly used as an alternative.

Against this background, the object of the present approach is to create an improved method for producing a fire-retardant container, an improved fire-retardant container and an improved system with a fire-retardant container.

This object is achieved by a method for producing a fire-retardant container, a fire-retardant container and an improved system with a fire-retardant container having the steps or the features of the independent claims.

The advantages that can be achieved with the approach presented are that an improved plastic container that is suitable for fire protection can be produced quickly and easily.

A method for producing a fire-retardant container has an implementation step and an application step. In the performing step, a surface treatment is carried out on at least one surface of an unprocessed container made of plastic, in particular made of a thermoplastic or a duroplastic, in order to produce a treated surface of the unprocessed container. In the application step, a fire retardant coating is applied to the treated surface to produce the fire retardant container.

The fire-retardant container can be used, for example, in the vehicle sector, for example for a rail vehicle or a truck, or in the building sector. The fire-retardant container, ie a container with fire protection, can be, for example, a plastic washing water tank for a windshield wiper system for a rail vehicle. The raw container can be tank- or canister-shaped and, for example, with a volume of at least 3 dm ³ , at least 5 dm ³ , at least 10 dm ³ , at least 1 qm ³ or at least 10 qm ³ . In the implementation step, at least the surface of the unprocessed container can be roughened during the surface treatment in order to produce a roughened surface of the unprocessed container. Additionally or alternatively, chemically polar structures can be produced on the surface during the surface treatment, for example by plasma or corona treatment or similar methods. As an alternative or in addition to a physical surface treatment, such as a plasma or corona treatment, at least one chemical surface treatment can also be carried out, for example using oxidative chemicals. The surface treatment can serve to improve bonding of the fire-retardant coating applied in the following step to the surface. In the performing step, the surface treatment may be performed on a plurality of surfaces of the green container. For example, in the performing step, the surface treatment can also be performed on the entire outer surface and/or inner surface of the raw container.

The method may further include a producing step in which the green container is produced using a plastic material. The plastic material can include polyethylene, for example. Such plastic containers can be produced quickly, easily and inexpensively.

According to one embodiment, in the performing step, as the surface treatment, activation of at least one surface of the unprocessed container can be performed in order to produce the treated surface of the unprocessed container.

According to one embodiment, in the carrying out step, as the surface treatment, a flame treatment can be carried out at least on the surface of the unprocessed container in order to produce the treated surface of the unprocessed container. Such flaming serves to increase the surface tension of the surface, ie to activate the surface. If necessary, this also results in better adhesion of the surface. This ensures proper adhesion of the fire retardant coating to the raw material. For example, a propane or acetylene flame with an excess of oxygen can be used for flaming.

According to one embodiment, a chemical treatment, in particular with a primer, can be used as the surface treatment in the carrying out step, at least of the surface of the raw container to produce the treated surface of the raw container.

According to one embodiment, in the performing step, as the surface treatment, a mechanical treatment, in particular by sandblasting, can be performed on at least the surface of the unprocessed container in order to produce the treated surface of the unprocessed container.

According to one embodiment, the raw container can be produced in the production step using an injection molding process. As the injection molding method, a special injection molding method, e.g. B. Rotational moulding, for example a so-called “rotomold”, or rotary air jets or rotary blowing, for example a so-called “blow mold”, including plastic sheet goods welded to form a container, all possible manufacturing methods and the combination of several processes with each other for the production of plastic containers (tank, canister) , be performed. In this way, a raw container made of thermoplastic, for example, can be created quickly and easily.

The fire-retardant coating can be based on a 1-component system or on a 2-component system, for example resin and hardener components. Thus, in the application step, a 1-component mass or a 2-component polyurethane-based mass can be applied to the treated surface as the fire-retardant coating. This can, for example, be an intumescent 2-component polyurethane-based mass. Such a material is characterized by high resistance to climatic and mechanical influences.

For example, the fire-retardant coating, which has resin and/or a hardener, can be applied to the treated surface in the application step. A mixing ratio in % by weight can be, for example, 100 parts resin to 12.5 parts hardener. A mix ratio in volume % can be 100 parts resin to 13.5 parts hardener. This can enable a coating with particularly good fire-retardant properties.

It is also advantageous if the fire-retardant coating, which has a thermal conductivity of essentially 1.0 W/(m*K), is applied to the treated surface in the application step. Such low thermal conductivity allows for good fire retardant properties.

For example, in the application step, the fire-retardant coating can be applied to the treated surface using an airless method, using compressed air, by brushing or rolling or by dipping. The airless process allows the spray material to be atomized under high pressure and applied to the surface without air supply, a nozzle bore can be > 0.127 cm. When using compressed air, a nozzle bore can be 4 mm, for example. Brushing or rolling is possible by adding solvents.

In the application step, the fire-retardant coating can be applied with a layer thickness of at least 300 µm. For example, in the application step, the fire-retardant coating can be applied with a layer thickness of at least 500 μm to 3000 μm or at most 5000 μm. Such a thickness favors the fire-retardant effect.

A fire-retardant container for a rail vehicle has a raw container with at least one treated surface and a fire-retardant coating. The raw container is formed from plastic, in particular from a thermoplastic. The treated surface of the green container was produced using a surface treatment of at least one surface of the green container. The fire retardant coating is placed on the treated surface.

According to one embodiment, the fire-retardant container can be designed as a washing water tank for a windshield wiper washing system, for example for a rail vehicle.

According to another embodiment, the fire-retardant container can be designed as a condensate container for an air supply system. According to another embodiment, the fire-retardant container can be designed as a condensate container for a compressed air system, for example of a rail vehicle.

According to another embodiment, the fire-retardant container can be shaped as a faecal container for a toilet system.

According to another embodiment, the fire-retardant container can be shaped as an operating material container or a fuel container for, for example, a rail vehicle, motor vehicle or domestic system.

According to another embodiment, the fire-retardant tank can be formed as a drinking water tank, service water tank or gray water tank.

A windshield wiper/wash system for a rail vehicle has the fire-retardant container described above in one of the variants described. The windscreen wiper/wash system can also have a filler cap for filling fluid into the flame-retardant container, a pump for pumping the fluid from the fire-retardant container to a wiper arm, the wiper arm, a wiper drive for driving the wiper arm, and/or an electronic control unit for controlling the windshield wiper/wash system exhibit.

An air supply system has the fire-retardant container described above in one of the variants described.

A toilet system has the fire-retardant container described above in one of the variants described.

• 1 einen seitlichen Querschnitt eines brandhemmenden Behälters gemäß einem Ausführungsbeispiel für ein Schienenfahrzeug;
• 2 einen seitlichen Querschnitt eines brandhemmenden Behälters gemäß einem Ausführungsbeispiel;
• 3 eine schematische Darstellung eines Scheibenwischwaschsystems gemäß einem Ausführungsbeispiel für ein Schienenfahrzeug; und
• 4 ein Ablaufdiagramm eines Verfahrens gemäß einem Ausführungsbeispiel zum Herstellen eines brandhemmenden Behälters für ein Schienenfahrzeug.

Exemplary embodiments of the approach presented here are explained in more detail in the following description with reference to the figures. Show it:

• 1 a lateral cross-section of a fire-retardant container according to an embodiment for a rail vehicle;
• 2 a side cross-section of a fire-retardant container according to an embodiment;
• 3 a schematic representation of a windshield wiper washer system according to an embodiment for a rail vehicle; and
• 4 a flowchart of a method according to an embodiment for producing a fire-retardant container for a rail vehicle.

In the following description of favorable exemplary embodiments of the present approach, the same or similar reference symbols are used for the elements which are shown in the various figures and have a similar effect, with a repeated description of these elements being dispensed with.

1 shows a side cross-section of a fire-retardant container 100 for a rail vehicle 105 according to an embodiment.

The fire-retardant container 100 according to this exemplary embodiment is arranged in or on the rail vehicle 105 purely by way of example. According to an alternative exemplary embodiment, the fire-retardant container 100 can be used in connection with another vehicle, for example a commercial vehicle or another motor vehicle, or a domestic system, for example a heating system, and/or as a condensate container for a brake system or air supply system, or in other areas of application. According to an alternative exemplary embodiment, the fire-retardant container 100 can be used, for example, as an operating material container, a fuel container, a faeces container, a service water container or a gray water container.

The fire-retardant container 100 has a raw container 110 with at least one treated surface 115 and a fire-retardant coating 120 . The raw container 110 is formed from plastic, in particular from a thermoplastic. The treated surface 115 of the green container 110 was produced using a surface treatment of at least one surface of the green container 110 . The flame retardant coating 120 is placed on the treated surface 115 .

The raw container 110 according to this exemplary embodiment is formed in the shape of a tank or canister, merely by way of example, here it is formed as a rectangular-shaped container by way of example. According to this exemplary embodiment, the raw container 110 has an interior space 125 for accommodating a liquid, solid and/or gaseous medium. According to one exemplary embodiment, the capacity of interior space 125 is several liters, for example at least 3 l. According to this exemplary embodiment, raw container 110 has a plurality of walls 130 which are arranged at an angle, in this case, for example, at right angles or parallel to one another, of which, according to this exemplary embodiment, at least one contains the treated surface 115 having. According to this exemplary embodiment, several of the walls 130, here for example all walls 130, have such a treated surface 115 with the fire-retardant coating 120. According to this exemplary embodiment, the treated surface 115 is arranged on an outer surface of the wall 130 facing away from the interior space 125 . According to this exemplary embodiment, the fire-retardant coating 120 is applied directly, ie immediately, to the treated surface 115 .

According to this embodiment, the treated surface 115 is formed as a roughened surface of the raw container 110 produced by a roughening process. Additionally or alternatively, the treated surface 115 has chemically polar structures after the surface treatment.

The fire-retardant container 100 presented here implements a plastic container suitable for fire protection. The fire-retardant container 100 can be used as a condensate container for so-called “air supply projects”, ie for the provision and intelligent distribution of compressed air to various consumers in the vehicle, for example in connection with a braking system. Alternatively, the fire-retardant container 100, as shown here, can be used as a plastic tank in the rail vehicle 105.

Unlike other materials, the materials of the fire-retardant container 100 sufficiently met the required properties with regard to mechanical loads, such as e.g. B. stone chip resistance, pressure stability and vibration resistance, as well as in relation to adequate resistance to environmental influences such. B. UV exposure, over the entire service life period of the product.

Unlike the previously offered flame-retardant plastic containers, which only correspond to outdated fire protection standards, the fire-retardant container 100 presented here corresponds to extended, current fire protection requirements.

The high fire protection requirements for plastic containers, e.g. in rail vehicle construction are met by these adaptations, or the fire-retardant container 100.

The fire-retardant container 100 presented here is particularly economical compared to alternative options such as a sheet metal enclosure, a container made from welded plate material, or gluing fire-retardant plates.

The fire-retardant container 100 also has a very large freedom of form, a mechanical strength, based on substrate material, is constant across the container 100, regardless of the geometry. The economy in the area of production is at a better level than with other processes. In addition, a relatively simple possibility of repairing the composite material of the container 100 can be implemented.

The approach presented here is a raw container 110 in the form of a plastic container, which was produced, for example, with a special injection molding process z. B. Rotomold or Blowmold, for example from a polyethylene, by a suitable surface pretreatment, in this case for example flame treatment, for the subsequent application of the fire-retardant coating 120 to prepare. Subsequent application of the fire-retardant coating 120 leads to an improved fire-resistant plastic container. Flame treatment of a thermoplastic material increases its surface tension, which leads to better bonding or adhesion. The flaming is suitable for the raw container 110, according to different embodiments, thermoplastic polymers such. B. polyethylene (PE) and / or polypropylene (PP) and / or polyamides (PA), and / or other plastics. According to one exemplary embodiment, the surfaces of the walls 130 have been cleaned and degreased prior to flaming. According to one exemplary embodiment, a propane or acetylene flame with an excess of oxygen was used during the flaming. According to one exemplary embodiment, the plastic surface was guided along under the flame, for example. Flaming produces visible roughening on shiny surfaces and/or chemically polar structures in the surface, which leads to an increase in surface tension. According to one exemplary embodiment, the fire-retardant coating 120 was applied to the flamed surface 115 immediately after the flame treatment, since the pretreatment effect wears off very quickly.

According to one exemplary embodiment, the coating 120 has an intumescent 2-component polyurethane-based mass, which achieves a fire protection barrier in rail vehicles. It has been determined through testing that surface preparation by flaming according to one embodiment is required or proper adhesion, also called "adhesion", to the raw material is not ensured. Advantageously, the use of an adhesion promoter is not necessary. The layer thickness of the fire-retardant coating 120 according to one exemplary embodiment is at least 500 μm, up to, for example, 3000 μm or a maximum of 5000 μm.

The fire-retardant container 100 implements a suitable and defined material composite under economically justifiable aspects, which meets the above-mentioned requirements such as fire protection, high freedom of form, mechanical strength and the required service life. Likewise, a simple repair of the composite material of the container 100 is made possible.

The practical application/use of the fire-retardant container 100 is for plastic containers with high fire protection requirements,

In summary, thanks to the fire-retardant container 100 in a plastic container, high fire protection requirements, great freedom of form, economic manufacturability, high mechanical strength, a long service life and easy repair options can be achieved.

2 12 shows a side cross-section of a fire-retardant container 100 according to an exemplary embodiment. This can be a section of a wall of the in 1 act described fire-retardant container 100.

According to this exemplary embodiment, the raw container has a substrate 200 made of thermoplastic. According to this exemplary embodiment, the treated surface is defined as one by means of the in 1 described flaming produced flamed substrate layer 205 formed, on which the fire-retardant coating 120 is applied in the form of a fire protection coating. According to this exemplary embodiment, a layer thickness of the fire-retardant coating 120 corresponds to or is similar to a layer thickness of the flame-treated substrate layer 205.

According to this exemplary embodiment, the fire-retardant coating 120 has a 2-component polyurethane-based material. It is particularly suitable for external use. This material is characterized by its high resistance to climatic and mechanical influences.

According to this exemplary embodiment, the fire-retardant coating 120 comprises a first component A, which is resin here by way of example, and/or a second component B, which is a hardener here by way of example.

According to this exemplary embodiment, a resin density at +20° C. is 1.32 to 1.36 kg/m ³ . According to this exemplary embodiment, a hardener density at +20° C. is 1.22 to 1.24 kg/m ³ . According to this exemplary embodiment, resin and/or hardener each have a thermal conductivity of essentially 1.0 W/(m*K).

According to this exemplary embodiment, the viscosity of the resin is approximately 25,000 mPa*s at +50°C. According to this exemplary embodiment, the viscosity of the hardener is approximately 100 mPa*s at +20°C.

According to this exemplary embodiment, a mixing ratio in % by weight is 100 parts of resin to 12.5 parts of hardener. According to this exemplary embodiment, a mixing ratio in volume percent is 100 parts of resin to 13.5 parts of hardener.

• Es wird sichergestellt, dass ein Untergrund, hier also die beflammte Substratschicht 205, frei von Verunreinigungen ist. Zur leichteren Verarbeitung wird gemäß einem Ausführungsbeispiel die erste Komponente A auf +50°C temperiert, wobei vor der Verarbeitung die erste Komponente A gut aufgerührt wurde. Komponente A und B wurden im genauen Gewichtsverhältnis sehr gut durchmischt. Die Applikation erfolgt bevorzugt im Airless-Verfahren, beispielsweise mit einer Düsenbohrung von >0,127 cm.
• In einem alternativen Verarbeitungsverfahren wird zur Applikation Druckluft eingesetzt, beispielsweise mit einer Düsenbohrung von 4 mm, oder es wird die brandhemmende Beschichtung 120 mittels Streichen oder Rollen, beispielsweise mit dem Zusatz von Lösungsmittel, oder Tauchen, appliziert. Der ersten Komponente A wurde gemäß einem Ausführungsbeispiel Ethylacetat oder Xylol zugesetzt. Eine Topfzeit beträgt gemäß einem Ausführungsbeispiel ca. 10 Minuten bei beiden Komponenten A und B bei +20°C, oder alternativ ca. 8 Minuten, wenn die erste Komponente A auf +50°C temperiert wurde. Eine Aushärtezeit bei +20°C beträgt < 24 Stunden, bis die beflammte Substratschicht 205 belastbar ist. Eine Temperaturbeständigkeit der beflammten Substratschicht 205 beträgt im Betrieb -25°C bis +60°C.

According to one exemplary embodiment, processing of the fire-retardant coating 120 at, for example, at least +5° C./<85% relative humidity takes place as follows:

• It is ensured that a substrate, in this case the flame-treated substrate layer 205, is free from contamination. For easier processing, according to one exemplary embodiment, the first component A is heated to +50° C., with the first component A being stirred well before processing. Components A and B were mixed very well in the exact weight ratio. Application is preferably carried out using the airless method, for example with a nozzle bore of >0.127 cm.
• In an alternative processing method, compressed air is used for application, for example with a nozzle bore of 4 mm, or the fire-retardant coating 120 is applied by brushing or rolling, for example with the addition of solvent, or by dipping. According to one exemplary embodiment, ethyl acetate or xylene was added to the first component A. According to one exemplary embodiment, a pot life is approx. 10 minutes for both components A and B at +20°C, or alternatively approx. 8 minutes if the first component A has been heated to +50°C. A curing time at +20° C. is <24 hours until the flame-treated substrate layer 205 can be loaded. A temperature resistance of the flame-treated substrate layer 205 is -25°C to +60°C during operation.

• Harz: Festkörper (Gew.): 100 %, Auftragsmenge [g/m²]: 1.320 g/m²
• Härter: Schichtdicke [µm] Nass: 1.000 µm, Trocken: 1.000 µm

A sample consumption is described below:

• Resin: solids (wt.): 100%, application quantity [g/m ² ]: 1,320 g/m ²
• Hardener: layer thickness [µm] wet: 1,000 µm, dry: 1,000 µm

The required dry layer thickness varies depending on the fire protection requirements and fire protection properties of the structures to be protected.

The product, i.e. the fire-retardant container 100, meets the extended fire protection requirements.

3 FIG. 3 shows a schematic representation of a windshield wiper/wash system 300 according to an exemplary embodiment for a rail vehicle. The wiper washer system 300 has the in one of 1 or 2 described fire-retardant container 100 on.

According to this exemplary embodiment, the fire-retardant container 100 is formed as a wash water tank 305 suitable for fire protection of the windshield wiper-wash system 300 .

The windshield wiper/wash system 300 also has, according to this exemplary embodiment, a filling cap 310 for filling washing water into the washing water tank 305, a pump 315 for pumping the washing water from the washing water tank 305 to a wiper arm 320, the wiper arm 320 for cleaning a window 322 of the rail vehicle, a wiper Drive 325 for driving the wiper arm 320 and / or an electronic control unit 330 for controlling the wiper washer system 300 on. According to one exemplary embodiment, the wiper drive 325 is in the form of an electro-pneumatic drive. According to this exemplary embodiment, the pump 315 is arranged on and/or in the fire-resistant container/washing water tank 305 .

According to this exemplary embodiment, a hose 335 fluidly connects the filler cap 335 to the washing water tank 305 and/or according to this exemplary embodiment, a further hose 335 fluidly connects the washing water tank 305 to the wiper arm 320.

According to an alternative exemplary embodiment, the fire-retardant container 100 can be used in connection with an air supply system or toilet system for, for example, a rail vehicle, motor vehicle or domestic system.

4 shows a flowchart of a method 400 according to an embodiment for producing a fire-retardant container for a rail vehicle. It can be one of the based on 1 , 2 or 3 act as described fire-retardant containers.

The method 400 has an implementation step 405 and an application step 410 . In step 405 of implementation, a surface treatment of at least one surface of an unprocessed container made of plastic, in particular made of a thermoplastic, is performed in order to produce a treated surface of the unprocessed container. In the application step 410, a fire retardant coating is applied to the treated surface to produce the fire retardant container.

Optionally, the method 400 according to this exemplary embodiment further has a step 415 of production, in which the raw container is produced using a plastic material. For example, according to this exemplary embodiment, the raw container is produced in step 415 of production using an injection molding process. According to this exemplary embodiment, step 415 of generating is performed before step 405 of performing. According to this exemplary embodiment, in step 405 of carrying out the surface treatment, flame treatment, activation, chemical treatment and/or mechanical treatment is carried out at least on the surface of the unprocessed container in order to produce the treated surface of the unprocessed container. In step 410 of application, the fire-retardant coating is applied with a layer thickness of at least 300 μm or at least 500 μm, according to one exemplary embodiment.

Unlike other manufacturing processes such as B. the processing of fire-retardant plastic plate material, the housing of plastic tanks with a metal shell, the production of a container made of metal, or the attachment of fire-retardant insulation materials on a plastic container, the production of more complex geometries in a variety of dimensions is given in the method 400 presented here.

REFERENCE LIST

100

fire retardant container

105

rail vehicle

110

raw container

115

treated surface

120

fire retardant coating

125

inner space

130

Wall

200

substrate

205

flamed substrate layer

300

windshield wiper wash system

305

washing water tank

310

filler cap

315

pump

320

wiper arm

322

disc

325

wiper drive

330

electronic control unit

335

Hose

400

Method of manufacturing a fire-retardant container for a rail vehicle

405

step of performing

410

step of application

415

step of creating

Claims (15)

Method (400) for manufacturing a fire-retardant container (100), the method (400) having the following steps: Carrying out (405) a surface treatment of at least one surface of an unprocessed container (110) made of plastic, in particular made of a thermoplastic or a duroplastic, in order to produce a treated surface (115) of the unprocessed container (110); and applying (410) a fire retardant coating (120) to the treated surface (115) to produce the fire retardant container (100). Method (400) according to claim 1 comprising a producing step (415) in which the green container (110) is produced using a plastic material. Method (400) according to one of the preceding claims, in which in step (405) of carrying out as the surface treatment an activation of at least one surface of the raw container (110) is carried out in order to produce the treated surface (115) of the raw container (110). Method (400) according to one of the preceding claims, in which in step (405) of carrying out as the surface treatment, flaming is carried out at least on the surface of the raw container (110) in order to produce the treated surface (115) of the raw container (110). Method (400) according to one of the preceding claims, in which in step (405) of carrying out as the surface treatment a chemical treatment, in particular with a primer, is carried out at least on the surface of the raw container (110) in order to protect the treated surface (115) of the To produce raw container (110). Method (400) according to one of the preceding claims, in which in step (405) of carrying out as the surface treatment a mechanical treatment, in particular by sandblasting, is carried out on at least the surface of the raw container (110) in order to protect the treated surface (115) of the raw container (110) to generate. Method (400) according to any one of claims 2 until 6 wherein the raw container (110) is produced in the producing step (415) using an injection molding process. Method (400) according to one of the preceding claims, in which in the step (410) of application as the fire-retardant coating (120) a 1-component mass or a 2-component polyurethane-based mass is applied to the treated surface (115). Method (400) according to one of the preceding claims, in which in the step (410) of applying the fire-retardant coating (120) comprising resin and/or a hardener is applied to the treated surface (115). Method (400) according to one of the preceding claims, in which in the step (410) of applying to the treated surface (115) the fire-retardant coating (120) is applied which has a thermal conductivity of substantially 1.0 W/(m*K ) having. Method (400) according to one of the preceding claims, in which in the application step (410) the fire-retardant coating (120) is applied to the treated surface (115) using an airless method, compressed air, brushing or rolling or dipping. Method (400) according to one of the preceding claims, in which in the application step (410) the fire-retardant coating (120) is applied with a layer thickness of at least 300 µm and/or with a layer thickness of at most 5000 µm. Fire-retardant container (100), the fire-retardant container (100) having the following features: a raw container (110) made of plastic, in particular of a thermoplastic, with at least one treated surface (115) produced using a surface treatment of at least one surface of the raw container (110); and a flame retardant coating (120) disposed on the treated surface (115). Fire retardant container (100) according to Claim 13 , which is formed as a washing water tank (305) for a windshield wiper washing system (300), as a condensate tank for an air supply system, as a holding tank for a toilet system and/or for use in a rail vehicle or a truck. System with a fire-retardant container (100) according to Claim 13 or 14 wherein the system is embodied as a windshield wiper washer system (300), as an air supply system or as a toilet system.

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