A system for coating an item

Abstract

A system for coating an item during a coating process, comprising: - a coating compartment, - a support arranged within an interior of the coating compartment, wherein the support is adapted to receive the item, - a first reservoir containing a liquid coating solution, - a nozzle connected to the reservoir, arranged within the interior of the coating compartment, and adapted to selectively distribute the liquid coating solution to the item, - a first collection vessel arranged below the support and configured to receive at least a portion of an excess liquid coating solution of the distributed liquid coating solution not adhering to the item during the coating process, and - a second reservoir arranged to receive at least a portion of the excess liquid coating solution from the collection vessel.

Description

[0001] A SYSTEM FOR COATING AN ITEM

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to a system for coating an item, where the item for example may be an item, such as a footwear, a bag, etc. The system comprises a rotatable support for receiving the item and a nozzle adapted to selectively distribute a liquid coating solution to the item. The system is operated under the control of a control unit, operating the system in a coating phase and a following evaporation phase.

[0004] BACKGROUND

[0005] In order to protect footwear or other items from moisture it is quite common to impregnate the footwear with an impregnating agent which will counteract the influence of moi sture / water / dirt.

[0006] Typically, the impregnating process is carried out by applying an impregnating agent that has been mixed with a liquid solvent in the form of a mineral turpentine or any other form of hydrocarbon distillates, where the mixture is provided in the form of a mist that is created by a spray can nozzle. The mist is directed towards the footwear, such that a layer of the impregnating agent is applied to a surface of the footwear. Once applied, the liquid mineral turpentine solvent will evaporate and leave a water-repellent membrane on the footwear. This process is typically conducted outside, since the liquid mineral turpentine solvent, as well as any excess impregnating agent, has an unpleasant smell, leave stains on the surroundings, and if inhaled is potentially harmful to the health.

[0007] That said, it is generally desirable to allow the impregnating process to anyway be performed indoors, such as at a shoe store, in direct relation to sale of the footwear. When performing the impregnating process in an indoor environment, it is for obvious reasons necessary to take care of the liquid mineral turpentine solvent as well as any excess impregnating agent generated during the impregnating process.

[0008] A solution to this problem is presented in US9498790, presenting a system for surface treatment of footwear, where the system is intended to be arranged in a shoe store. The footwear is positioned within a chamber, whereafter the footwear is sprayed with the impregnating agent. Once the spraying process has completed, a vacuum is formed within the chamber and the (evaporated) liquid mineral turpentine solvent as well as any excess impregnating agent is sucked out from the chamber and retained within an active carbon filter. Even though the implementation presented in US9498790 generally solves the problem with expelling the (evaporated) liquid mineral turpentine solvent as well as any excess impregnating agent into a surrounding indoor environment, there is always an endeavor to introduce further improvements. Specifically, there is a general desire to transition to biologically based liquid coating solution, which will generate advancement when it comes to ensuring a safer working environment for a user operating such a system. However, biologically based liquid coating solution will also generate challenges not generally applicable to mineral based liquid coating solution.

[0009] SUMMARY

[0010] According to an aspect of the present disclosure, the above is at least partly met by a system for coating an item during a coating process, comprising a coating compartment, a support arranged within an interior of the coating compartment, wherein the support is adapted to receive the item, a first reservoir containing a liquid coating solution, a nozzle connected to the reservoir, arranged within the interior of the coating compartment, and adapted to selectively distribute the liquid coating solution to the item, a collection vessel arranged below the support and configured to receive at least a portion of an excess liquid coating solution of the distributed liquid coating solution not adhering to the item during the coating process, and a second reservoir arranged to receive at least a portion of the excess liquid coating solution from the collection vessel.

[0011] The present disclosure is based on the understanding that it is crucial to address the unique challenges presented when using some form of modern liquid coating solutions, specifically when such liquid coating solution are biologically based liquid coating solvents comprising a coating agent mixed with a liquid biosolvent. Unlike traditional liquid mineral turpentine solvents, these biosolvents do not readily evaporate, possibly leading to an accumulation of excess liquid coating solution during the coating process. Such an excess, which does not adhere to the item being coated, requires efficient management to maintain operational efficacy and environmental safety.

[0012] According to the present disclosure, such a challenge is handled by incorporating a collection vessel that is positioned strategically below the support within the coating compartment, where the vessel has been configured to capture the excess liquid coating solution that drains off the item. Such a design not only ensures the efficient handling of the non-adhering coating solution but also minimizes waste and potential environmental impact. Additionally, the integration of the collection vessel with the coating system represents a significant advancement in the coating technology, particularly in the context of using environmentally friendly biosolvents. First, it may facilitate a cleaner and more sustainable operation by effectively managing the excess solution, thereby addressing one of the primary concerns in the transition from mineral-based to biologically based coating solutions.

[0013] Biosolvents as mentioned above should be seen as an alternative to e.g., previously used petrochemical solvents including mineral turpentine or any other form of hydrocarbon distillates. Rather, biosolvents may as indicated above be one of or a mixture of water, acetals alcohol, or e.g., derivatives from processing or fermenting of agricultural crops, materials from the forest industry or general biodegradable solvent products.

[0014] Furthermore, within the context of the present disclosure the expression “item” should be interpreted broadly. Specifically, it should be understood that the item in some embodiment may be an item, where an item is an item that can be worn by a person or an animal. Examples of items include footwear, gloves, hats, jackets, etc. Other items may also be coated using the system according to the present disclosure, for example including bags, a cover for e.g., a boat, etc., thus not necessarily being items worn by a person or an animal but having a benefit from being coated / impregnated.

[0015] Preferably, the second reservoir arranged below the support and configured to store the excess liquid coating solution received by the collection vessel. The addition of the second reservoir provides a practical solution for managing the excess liquid coating solution efficiently. By positioning the second reservoir below the support, the system leverages gravity to facilitate the natural flow of the excess solution from the collection vessel into the reservoir. Such a design further minimizes the need for additional mechanical or electrical components to transfer the liquid, thereby enhancing the system’s reliability and reducing its complexity.

[0016] Additionally, the present disclosure recognizes that the passive gravity-driven transfer of excess liquid coating solution from the collection vessel to the second reservoir, as facilitated by the relative positioning of these components, contributes to reducing system downtime and operational inefficiencies. Unlike systems requiring mechanical pumps for liquid transfer, this configuration minimizes the number of moving parts, reducing maintenance requirements and associated costs while enhancing the reliability of the coating system during prolonged use. Furthermore, the storage capability of the second reservoir brings several operational advantages. It allows for the temporary holding and potential reuse of the excess coating solution, contributing to resource efficiency and reducing waste. Such an implementation may for example be beneficial when using more expensive or environmentally sensitive coating solutions, as it ensures that the maximum amount of the liquid coating solution is utilized effectively. The second reservoir also streamlines the coating process by continuously managing excess solution, thus maintaining a cleaner and more controlled coating environment.

[0017] In an embodiment, the collection vessel further comprises an outlet connected to an inlet of the second reservoir to facilitate the transfer of the excess liquid coating solution. The presence of an outlet in the collection vessel, directly connected to the inlet of the second reservoir, significantly streamlines the process of handling the excess coating solution. Such a direct linkage between the two components ensures a controlled and efficient transfer of the liquid, harnessing gravity to guide the flow seamlessly from one container to the other.

[0018] Additionally, the design of the outlet-inlet connection may also increase cleanliness and reducing waste when operating the system. That is, by providing a contained path for the excess solution, the risk of spills or accidental dispersal of the coating material is markedly reduced. Thus, such an implementation may be particularly beneficial in sustaining a safe and orderly work environment. Furthermore, the simplicity of the presented design aids in routine maintenance, allowing for easier access and potentially lowering the time and cost associated with system upkeep.

[0019] It may also be possible to arrange the collection vessel to further comprise sloped internal surfaces to guide the excess liquid coating solution towards the outlet. The incorporation of sloped internal surfaces within the collection vessel is a strategic enhancement that optimizes the flow dynamics of the liquid coating solution. These inclined surfaces create a natural pathway, guiding the excess solution efficiently towards the outlet. Such a design ensures that the liquid is directed precisely where it needs to go, minimizing stagnation or pooling within the collection vessel.

[0020] The advantages of sloped surfaces extend beyond mere facilitation of fluid movement. By ensuring a more complete and rapid transfer of the excess solution to the second reservoir, the system minimizes waste and maximizes the potential for reusing the liquid coating solution. Moreover, the sloped design contributes to the ease of cleaning and maintenance of the collection vessel. Residues of the coating solution are less likely to accumulate on these surfaces, simplifying the post-operation cleanup process and maintaining the system’s operational efficacy over time.

[0021] Preferably, the second reservoir is positioned at a lower elevation than the collection vessel to utilize gravity for the transfer of the excess liquid coating solution to the second reservoir. Positioning the second reservoir at a lower elevation is a practical decision that capitalizes on the natural force of gravity to enhance the system’s efficiency. Such a strategic placement ensures a continuous and passive transfer of the excess coating solution, thereby eliminating the need for additional mechanical pumps or energy-consuming devices.

[0022] The use of gravity in this manner brings about significant operational benefits. For example, the system becomes inherently more reliable due to the reduction of moving parts and potential points of mechanical failure. Furthermore, the energy efficiency of the system is heightened, as the natural downward flow reduces the overall power requirements, thereby now only making the system more sustainable and cost-effective but also supports uninterrupted operation, even in scenarios where power supply may be inconsistent. Additionally, the passive nature of this gravity-based transfer mechanism contributes to the system’s overall simplicity, making it user-friendly and easier to maintain in the long term.

[0023] In some possible embodiments of the present disclosure, it may be advantageous to arrange the system to further comprise a sensor configured to detect a level of the excess liquid coating solution within the second reservoir. Equipping the second reservoir with such a sensor significantly elevates the system’s functionality by providing critical insights into the volume of the stored solution. Accurate monitoring of the solution level ensures efficient and timely management of the coating process.

[0024] The presence of a level-detecting sensor in the system may also offer substantial operational benefits. It enables prompt responses, such as activating drainage or adjusting the coating process, whenever the liquid reaches a predefined threshold. Preventing overflow and potential system disturbances becomes manageable, enhancing overall operational reliability. Moreover, the sensor’s ability to inform on the quantity of the excess solution assists in making informed decisions about its reuse or disposal. Such capabilities are vital for adhering to environmental standards and maintaining the system’s efficiency, ensuring that the excess liquid coating solution is managed in a safe and sustainable manner.

[0025] For example, sensor may in some embodiments be configured to trigger an alert when the level of the excess liquid coating solution in the second reservoir is above a predefined threshold. The capability of the sensor to initiate an alert under such conditions is a crucial safety feature, enhancing the system’s operational integrity. By setting a predefined threshold, the system ensures that any potential risk of overflow or excessive accumulation of the coating solution is proactively managed. The alert mechanism may also function as an early warning system, allowing for immediate corrective actions to be taken, thus preventing any disruption in the coating process.

[0026] Such a configuration of the sensor provides multiple advantages. Primarily, it maintains the system’s efficiency and safety by ensuring that the levels of the liquid coating solution are kept within optimal operational parameters. The alert feature is instrumental in avoiding spillages and possible damage to the system or the working environment. It also aids in maintaining the quality of the coating process, as excessive accumulation in the second reservoir could lead to undesirable alterations in the properties of the coating solution. Overall, the sensor’s alert functionality is an essential aspect of the system’s design, contributing to a safer, more controlled, and efficient coating process.

[0027] In addition to the discussion above, it may be preferred to arrange the support such that the support comprises a perforated surface to encourage a flow of excess liquid coating solution towards the collection vessel. The perforated surface of the support may further increase the system’s overall efficiency. By allowing the unadhered coating solution to drain through these perforations directly into the collection vessel, the system ensures effective management of excess liquid with minimal loss.

[0028] The benefits of a support with a perforated surface are multiple. Firstly, it promotes an even application of the coating solution to the item, as any surplus solution is swiftly drained away, preventing pooling and inconsistent coating. Secondly, such a design feature greatly assists in maintaining a cleaner coating compartment, as it effectively channels away excess solution, reducing build-up around the coated item. Additionally, the perforated design simplifies maintenance and cleaning processes. Easy drainage through the support surface makes it straightforward to clear any residual solution or potential clogs, enhancing the system’s operational convenience and long-term functionality. Overall, the inclusion of a perforated surface on the support is a practical design choice, significantly contributing to the system’s efficacy and ease of use.

[0029] Preferably, a size of openings of the perforated surface of the support are selected to optimize a balance between a strength of the support and to provide an efficient flow of excess liquid coating solution towards the collection vessel. The selection of the opening sizes is an important aspect of the design, as it directly impacts the functionality of the support in the coating system. By choosing the right size for these openings, the system aims to maintain the structural integrity of the support while also ensuring that the excess coating solution is effectively managed.

[0030] The optimization of the opening sizes may further enhance the overall efficiency of the system. Larger openings could allow for a more rapid drainage of the excess solution, aiding in the quick removal of surplus liquid, but might compromise the strength and stability of the support. On the other hand, smaller openings could contribute to the support’s strength but may impede the flow of the coating solution. Therefore, finding the optimal size is a deliberate process that balances these factors. Such a careful design consideration helps in achieving a uniform coating application and contributes to maintaining the durability and effectiveness of the system over time, ensuring that the support continues to perform its function efficiently without hindering the drainage process.

[0031] Additionally, it may in some embodiments be desirable to ensure that the perforated surface of the support is selectively coated to increase the flow of excess liquid coating solution towards the collection vessel. The application of a selective coating on the support’s perforated surface serves a dual purpose. Primarily, it enhances the flow of the coating solution, ensuring that any excess liquid smoothly transitions through the perforations and into the collection vessel. Such a coating can be designed to have hydrophilic properties, reducing surface tension, and facilitating the movement of the water-based solution.

[0032] Beyond enhancing the flow dynamics, the selective coating on the support’s surface plays a significant role in protecting the support from potential corrosion or damage. Given the water-based nature of the coating solution used in the system, there is an inherent risk of rust or similar types of deterioration over time, especially in metal supports. By selecting a coating material that is not only conducive to liquid flow but also resistant to water-induced corrosion, the longevity and durability of the support are significantly increased. The choice of coating material is particularly crucial in environments where the support is constantly exposed to water-based solutions, as it ensures that the support retains its structural integrity and functionality despite the potentially corrosive nature of the environment. Such a strategic selection of coating material adds an extra layer of reliability and sustainability to the system, making it well-suited for prolonged and intensive usage.

[0033] In a preferred embodiment of the present disclosure, the support is removable from the coating compartment. Such a design feature may significantly enhance the system’s versatility and ease of maintenance. By allowing the support to be detached, the system provides a straightforward means for cleaning and upkeep, which may be particularly advantageous in scenarios where the support accumulates residues over time or when a thorough cleaning is necessary to maintain optimal coating performance.

[0034] The removability of the support also adds a layer of practicality in terms of system longevity and adaptability. In instances where the support shows signs of wear or damage, it can be easily replaced without the need for extensive system downtime or complicated disassembly procedures. Accordingly, such an implementation not only ensures that the coating process remains consistent and efficient but also prolongs the overall lifespan of the system. Furthermore, the ability to remove the support offers flexibility in terms of accommodating varied sizes or types of items to be coated. Operators can swap out the support for one that better fits the specific requirements of the item, thereby enhancing the system’s applicability across a range of coating tasks. Overall, the design choice to make the support removable reflects a thoughtful consideration for operational convenience, maintenance ease, and system adaptability.

[0035] Furthermore, in a preferred embodiment of the present disclosure the system further comprises a control unit adapted to operate the system during the coating process, the coating process comprising a coating phase and a following evaporation phase, and a climate property adjustment arrangement connected to the control unit and adapted to selectively adjust a climate property within the coating compartment, wherein the nozzle is activated by the control unit and distributes the liquid coating solution for at least a portion of the coating phase, a position of the nozzle is adjusted under the control of the control unit relative to the item for at least a portion of the coating phase, and the climate property adjustment arrangement is activated for at least a portion of the evaporation phase.

[0036] Accordingly, in such an embodiment the item within the coating compartment is controlled to take place in such a manner that the position of the nozzle that distributes the liquid coating solution is moved relative to the item. The inventors have specifically identified that such a procedure may ensure that the item is coated more evenly as compared to a situation where e.g., one or multiple nozzles are arranged at fixed position relative to the item to be coated.

[0037] Furthermore, the precise control offered by the system during the coating and evaporation phases also contributes significantly to the overall energy efficiency. By optimizing the duration and conditions of each phase, the system minimizes unnecessary energy consumption, aligning with sustainable operational practices.

[0038] As such, when performing an impregnating process where the liquid solvent is organic, such as being water, acetals or possibly alcohol, or any other related or similar biosolvents, it has been found that the general approach of simply waiting for a predetermined evaporation time period will not be sufficient for the liquid biosolvent to evaporate from the coated item more or less completely. Accordingly, the inventors have identified that it is desirable to introduce a climate property adjustment arrangement that can be controlled to selectively adjust a climate property within the coating compartment to reduce evaporation time, thereby significantly reducing the time it takes for the liquid biosolvent to evaporate from the item, whereby the item will appear dryer as compared to not making use of the climate property adjustment arrangement. In some embodiments the evaporation phase is between 20 - 100 seconds, preferably 40 - 80 seconds.

[0039] Additionally, the ability to control the nozzle’s position and adjust climate properties dynamically opens up possibilities for experimenting with different coating techniques and materials. This flexibility can lead to innovations in coating applications, potentially improving the quality and durability of the coating.

[0040] Moreover, the integration of a climate property adjustment arrangement is particularly advantageous when dealing with sensitive or complex items. It allows for the tailoring of the environment to suit specific material characteristics, ensuring that the integrity of the item is preserved while achieving an optimal coating result.

[0041] This operation will accordingly ensure that the item is perceived as at least essentially dry (at touch) when being removed from the coating compartment. The use of a biosolvent will greatly improve the overall working environment, as well as improving environmental aspects of coating / impregnating an item. Accordingly, the present disclosure provides for an improved coating system that allows for effective coating / impregnation of an item using a liquid coating solution, where a liquid solvent of the liquid coating solution is organic.

[0042] In a possible embodiment of the present disclosure, the coating system further comprises at least one sensor configured for monitoring real-time parameters within the coating compartment, such as humidity, temperature, or air flow rate. The control unit may in such an embodiment be adapted to process data from these sensors and dynamically adjust operational parameters of the system accordingly. For example, during the coating phase, the system may alter the nozzle’s activation time or adjust the rotational speed of the support disc based on humidity levels to ensure optimal application of the coating solution. Similarly, during the evaporation phase, the system may extend or reduce the phase duration, or modify the air circulating arrangement’s airflow intensity, based on the measured temperature or evaporation rate. Such a dynamic adjustment capability allows the system to optimize the coating and evaporation processes in response to varying environmental conditions, thereby ensuring consistent quality and efficiency. By continuously adapting to real-time feedback, the system reduces the likelihood of overcoating, undercoating, or incomplete evaporation. Therefore, such functionality not only enhances the performance and reliability of the system but also contributes to resource efficiency, minimizing waste and energy consumption while maintaining a high standard of coating quality.

[0043] As discussed above, it has shown to be beneficial to allow coating of the item within the coating compartment to take place in such a manner that the position of the nozzle that distributes the liquid coating solution is moved relative to the item. This can for example be achieved by arranging the support to be rotatable by means of a thereto connected electrical motor, where the electrical motor typically is connected to and controlled by the control unit. Such an implementation of the relative nozzle-item repositioning can in some embodiments provide for a reliable operation as well as ensuring that the system may be arranged in a compact manner. Such a rotational mechanism allows for even distribution of the coating solution, ensuring that every angle and surface of the item receives adequate coverage. It may also minimize the risk of over saturation in any single area, contributing to a more uniform drying process during the evaporation phase.

[0044] In some embodiments it has shown beneficial to activate the electrical motor not only during the coating phase by also during at least a portion of the evaporation phase, to thereby reducing a time for evaporating the liquid biosolvent. Activating the motor during the evaporation phase can enhance the drying process, as motion can facilitate air flow around the item, speeding up the evaporation of the biosolvent. Such a dynamic approach to evaporation can be particularly effective in achieving a faster turnaround time, making the system suitable for high-throughput coating operations.

[0045] That said, it may also be possible and within the scope of the present disclosure to allow the item to be stationary, while the position of the nozzle is adjusted during the coating phase. Such an embodiment may for example be achieved by movably arranging the nozzle at a “track”, or by arranging the nozzle at an “arm”, where the arm is rotated relative to the item. These alternatives offer flexibility in system design and can be tailored to specific operational requirements or space constraints. The track system allows for linear movement of the nozzle, ideal for elongated items, while the arm system offers a wider range of motion, suitable for irregularly shaped items. Both designs maintain the principle of uniform coating while adapting to different operational scenarios. The climate property adjustment arrangement may in some embodiments comprise at least one of an electrical heating means adapted to increase a temperature within the interior of the coating compartment, and an air circulating arrangement adapted to circulate air within the interior of the coating compartment. In some embodiments it may be beneficial to arrange the climate property adjustment arrangement to comprise both the electrical heating means and the air circulating arrangement. The presented dual approach provides a comprehensive solution for climate control within the compartment, addressing various aspects of the evaporation process. The combination of heated air and circulation ensures that the entire interior of the compartment is uniformly conditioned, facilitating a more consistent and rapid evaporation phase.

[0046] In an embodiment of the present disclosure, the air circulating arrangement is positioned below the item, configured to direct air upward into the coating compartment. Such a configuration takes advantage of the natural rise of heated air, facilitating efficient evaporation of the liquid biosolvent while ensuring thorough exposure of the item’s underside to the airflow. When the support disc is rotating during the evaporation phase, the upward airflow combines with the rotation to create a dynamic drying environment, enhancing the uniformity of the evaporation process. Such an arrangement may be particularly advantageous for items with complex geometries or those requiring accelerated drying.

[0047] In an alternative embodiment, the air circulating arrangement is arranged to direct air laterally toward the item being coated, such that airflow is primarily directed from the side. Such a lateral airflow ensures even distribution of air across the surfaces of the item, promoting uniform evaporation of the liquid biosolvent. When combined with the rotation of the support disc, this configuration further enhances evaporation by exposing all parts of the item to a consistent air flow. Additionally, the lateral airflow minimizes the risk of disturbing the applied coating layer, preserving the integrity of the coating while ensuring a high-quality result.

[0048] The electrical heating means may for example comprise a resistive heater, for example provided within an airflow generated by the air circulating arrangement, whereby a heated airflow may be circulated around and towards the item. That said, the electrical heating means could alternatively, or also, include a radiant heater, such as for example an infra based heater. The choice between a resistive heater and a radiant heater allows for flexibility in how heat is applied within the compartment. While the resistive heater efficiently warms the air, contributing to an overall increase in compartment temperature, the radiant heater provides direct, focused heat, which can be particularly effective for items requiring targeted drying. Such a radiant heater could as such be arranged within the coating compartment and facing the item. Also, such a radiant heater is also preferably connected to and controlled by the control unit.

[0049] In a preferred embodiment the electrical heating means is controlled by the control unit to keep an average temperature within the coating compartment above a temperature exterior of the compartment during the evaporation phase. Such an exemplary temperature control not only ensures optimal conditions for evaporation but also contributes to energy efficiency. By adjusting the heating based on external temperature, the system uses only the necessary amount of energy, reducing overall consumption. Accordingly, an energy consumption of the electrical heating means can be reduced by taking into account knowledge of the temperature exterior of the compartment, meaning that less energy may be used in case the coating system is arranged at a place where the temperature exterior of the compartment is relatively high. That said, in some embodiments it may be beneficial to increase the temperature within the compartment to around 50 degrees C for at least a portion of the evaporation phase, thereby significantly reducing the time spent for evaporating the liquid biosolvent.

[0050] Generally, the complete process including the coating phase and the evaporation phase is performed in such a manner that the item remains within a single coating compartment throughout the complete process. However, in an alternative embodiment the coating compartment is divided into two parts or provided separately, allowing the coating phase to be performed in one coating compartment portion and the evaporation phase in another separate coating compartment portion. Such an alternative embodiment may have advantages when it comes to optimizing the portions to the process taking place within the specific coating compartment portion. For example, the size of the different coating compartment portions may be selected to be optimized for the respective phases (i.e., the coating and the evaporation phase).

[0051] Preferably the coating system further comprises an air duct having a first opening connecting the air duct with an interior of the coating compartment at a first position of the coating compartment, where a second opening connects the air duct with the interior of the coating compartment at a second position of the coating compartment, the second position being different from the first position. The suggested design of the air duct may be provided to ensure effective circulation of air throughout the compartment, facilitating uniform drying and maintaining consistent environmental conditions. The strategic positioning of the openings enhances the efficiency of the air circulation, contributing to a more controlled and effective drying process. Accordingly, the airflow generated by the air circulating arrangement will truly circulate the air from one end to another end of the compartment. In some embodiments the air circulating arrangement comprises a fan and a filter. Regular replacement or maintenance of the filter may be suitable to ensure that the air circulating within the compartment is free from contaminants, which can affect the quality of the coating. Keeping the filter clean also ensures optimal performance of the fan, maintaining the system’s efficiency over time. It may in some embodiments be desirable to change the filter at regular intervals to increase an operational lifetime of the fan.

[0052] In some embodiments, the air circulating arrangement is configured to force air from within the interior of the coating compartment into the air duct. Such a scheme of pushing air into the duct can be beneficial in maintaining a consistent airflow pattern, which is vital for even drying. The choice of either pushing or sucking air through the system can be based on numerous factors, including the specific design of the compartment and the nature of the items being coated. Accordingly, air is not sucked out of the compartment but rather pushed out of the compartment. However, it could of course also be possible to arrange the air circulating arrangement to such air out of the compartment. The decision between these two methods depends on the desired airflow dynamics and the specific requirements of the coating process. Also, the different embodiments have different advantages dependent on the implementation at hand.

[0053] Preferably, the air circulating arrangement is (also) activated for at least a portion of the coating phase. Such an implementation may allow for a further improvement as to the distribution of the liquid coating solution during the coating phase. The active circulation of air may be provided for enhancing the uniformity of the coating. By creating a controlled air movement within the compartment, the system can more effectively manage the distribution of the liquid coating solution, particularly in the form of a mist, ensuring a more even application. Specifically, the air circulating arrangement may be arranged to direct a mist or similar formed at the nozzle towards the item to be coated. For example, the directed airflow can assist in guiding the mist towards specific areas or across the surface of the item, enabling a more targeted and efficient coating process. Additionally, the system may in some embodiments be provided with a directing portion arranged within the coating compartment and arranged to direct an air flow generated by the air circulating arrangement towards the item. Taking the above into account, it may in some embodiments be desirable to arrange the air circulating arrangement to generate a first air volume flow during the coating phase and a second air volume flow during the evaporation phase, the first air volume flow being (substantially) lower than the second air flow volume. Adjusting the air volume flow between the coating and evaporation phases allows for a tailored approach to each phase’s requirements. A lower air volume during the coating phase helps in managing the mist without disrupting the application, while a higher volume during evaporation aids in quick drying.

[0054] As discussed above, the reservoir contains the liquid coating solution and the nozzle is connected to the reservoir, such as using some form of tubing or pipe. The liquid coating solution can in some embodiments be “pumped” (e.g., using an electrical pump) from the reservoir and “pushed” through the nozzle to form the above discussed mist of the liquid coating solution to be used for coating the item. Such a functionality may be provided to ensure a steady and controlled flow of the coating solution, vital for maintaining consistency in the coating process. However, it may in some embodiments be beneficial to instead provide the system with an air tank holding compressed air, where the air tank is connected to the reservoir and provided for atomizing the liquid coating solution using the nozzle. The use of compressed air for atomization can lead to a finer mist, enhancing the coating quality. The air tank may in some embodiments be filled using a compressor. Alternatively, a standalone air tank could be employed, offering a quieter operation but requiring more frequent maintenance. However, it could also be possible and within the scope of the present disclosure to provide a standalone air tank that is changed with regular intervals. Such a standalone air tank could potentially provide for a quieter coating system, due to the lack of the compressor. However, using a standalone air tank could at the same time increase servicing intervals for the coating system.

[0055] Control of when the nozzle it to distribute the atomized liquid coating solution could for example be achieved by arranging the coating system to further comprise a valve connected to the control unit and electrically controllable for selectively distributing the liquid coating solution to the item. The integration of a controllable valve enhances the precision of the coating application, allowing for controlled dosing of the solution. Dosing of the atomized liquid coating solution may in such an embodiment be precise, contributing to reduced waste, lower operational costs, and potentially shortened coating and evaporation times. Preferably, the coating compartment comprises an access door configured to selectively allow access to the interior of the coating compartment. This of course simplifies the operational process of coating the item. However, it may generally be desirable to ensure that the coating compartment is only accessible outside of the coating and the evaporation phase. Accordingly, e.g., an electronic lock provided in relation to the access door may be arranged to be controlled by the control unit. Incorporating such an electronic lock mechanism enhances safety by preventing accidental or unauthorized access during critical phases of the process, thereby ensures that the coating and evaporation phases occur without external interference, maintaining the integrity and consistency of the process.

[0056] In a possible embodiment of the present disclosure the system comprises a main door covering essentially the entire front of the system. This main door, when opened, provides direct access to both the coating compartment and the lower space housing the reservoirs. This consolidated access point simplifies system maintenance, allowing for easy replenishment of the reservoirs and routine checks of the compartment. The implementation of this main door design is not only practical but also contributes to the system’s overall aesthetic, offering a sleek and professional appearance.

[0057] Preferably, integrated into the main door is an additional door, specifically designed for accessing only the coating compartment. The inclusion of this additional door offers operational flexibility, particularly when only the coating compartment needs to be accessed. Furthermore, the system is preferably equipped with effective sealing around the coating compartment, minimizing the escape of odors or vapors. The sealing is generally desirable for maintaining a pleasant and safe working environment, especially important when the system is used in enclosed or poorly ventilated spaces. The dual-door system, coupled with robust sealing, highlights the inventors’ commitment to both operational efficiency and environmental safety.

[0058] In another embodiment of the present disclosure, the front of the system is provided with a first door for accessing the coating compartment and a second separate cover covering the lower space housing the reservoirs. Such an embodiment may in some implementations be preferred, since it may be possible to only provide a sealing for the first door, whereas the second separate cover could be provided without such a seal. Additionally, in such an embodiment the second separate cover must not necessarily be arranged as a door with hinges on one end. Instead, the second separate cover may be connected to the front of the system using other fasteners, for example using magnets for allowing easy access to the lower space housing the reservoirs, thereby simplifying maintenance of the system. In addition to the above, it may be desirable to equip the coating system with a control panel arranged external of the coating compartment, connected to the control unit, and arranged to allow a user to operate the system for coating and drying the item. The external positioning of the control panel enhances user convenience, enabling straightforward operation and monitoring of the system without the need to access the coating compartment. Such a user-centric design approach not only simplifies the workflow but also contributes to safety by minimizing the need for direct interaction with the internal components of the system.

[0059] The control panel may for example be provided with a user interface to allowing the user to select a type of item, where the control unit subsequently may operate a specifically selected “coating recipe” targeted for a specific type of item. Such a feature introduces an elevated level of customization and precision to the coating process. By enabling users to select from pre-set coating recipes, the system can automatically adjust various parameters such as nozzle movement, climate conditions, and duration for each specific item type, ensuring optimal coating results tailored to the item’s characteristics.

[0060] Accordingly, in some embodiments the control unit stores a plurality of different individual coating recipes relating to different item or item types. The database of recipes enhances the system’s versatility, making it suitable for a wide range of applications. Users can easily switch between diverse types of items, making the system highly adaptable to varying operational requirements. Furthermore, the possibility of updating or adding new recipes to the control unit’s database provides an avenue for future expansion and adaptation to new coating technologies and materials.

[0061] Further features of, and advantages with, the present disclosure will become apparent when studying the appended claims and the following description. The skilled addressee realize that different features of the present disclosure may be combined to create embodiments other than those described in the following, without departing from the scope of the present disclosure.

[0062] BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The various aspects of the present disclosure, including its particular features and advantages, will be readily understood from the following detailed description and the accompanying drawings, in which:

[0064] Fig. 1 illustrates an exemplary system for coating an item according to a currently preferred embodiment of the present disclosure, Figs. 2A and 2B present a detailed view of a collection vessel provided as a component of the system as is presented in Fig. 1.,

[0065] Figs. 3 A and 3B present exemplary implementations for accessing the system as exemplified in Fig. 1, and

[0066] Fig. 4 shows a flow chart of a method for operating the coating system according to the present disclosure.

[0067] DETAILED DESCRIPTION

[0068] The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the present disclosure are shown. This present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness to fully convey the scope of the present disclosure to the skilled addressee. Like reference characters refer to like elements throughout.

[0069] Referring now to the drawings and to Fig. 1 in particular, conceptually depicting a coating system 10 for coating an item, here in the form of a pair of shoes 100. In the example as is shown in Fig. 1, the coating system 10 is a specifically adapted for forming an impregnating layer of at a surface of the shoe 100. It is of course possible to make use of the coating system 10 for providing other types of coatings to a multitude of different items. As mentioned above, such other types of items can for example include items, such as gloves, jackets, etc., and / or general items such as bags.

[0070] The coating system 10 comprises a coating compartment 104, where the shoes 100 are to be coated at an interior of the coating compartment 104. A support 102 is also provided, onto which the shoes 100 are to be placed during coating. A door 101 (as will be elaborated in relation to Figs. 3 A and 3B) is provided to allowing access to the interior of the coating compartment 104.

[0071] As is illustrated in Fig. 1, the support 102 is provided as a “perforated disc” arranged at an axis 103. The axis 103 is in turn connected to an electrical motor 105. Activation of the electrical motor 105 will rotate the axis 103 and the disc 102, where the disc / support 102 will rotate similar to a turntable.

[0072] The coating system 10 also comprises a first reservoir 108 containing a liquid coating solution and a nozzle 109 connected to the first reservoir 108, where the nozzle 109 is arranged within the interior of the coating compartment 104 and adapted to selectively distribute the liquid coating solution to the shoes 100, by controlling a valve (not explicitly shown). The coating system 10 may also optionally comprises a pressurizing arrangement. The pressurizing arrangement can for example include an air tank holding compressed air, or a compressor. The valve is in one embodiment an electrically controllable valve. Other types of controllable valves are however also possible and within the scope of the present disclosure. In an alternative embodiment it may be possible to provide a pump for pressurizing the liquid coating solution to be delivered through the nozzle 109.

[0073] In a preferred embodiment, e.g., the first reservoir 108 and the pressurizing arrangement are arranged in an auxiliary compartment of the coating system 10, where the auxiliary compartment is arranged below the coating compartment 104. The auxiliary compartment may also hold a second reservoir 113, where the second reservoir 113 is provided for collecting an excess liquid coating solution of the distributed liquid coating solution that is not adhering to the item when coating the item, as will be further elaborated in relation to Figs. 2A and 2B below.

[0074] The coating system 10 further comprises a climate property adjustment arrangement and provided for selectively adjust a climate property within the coating compartment. In the illustration provided in Fig. 1, the climate property adjustment arrangement is arranged to comprise three parts, namely a heater 114 arranged to increase a temperature within the interior of the coating compartment 104, a fan 116 for circulating air within the interior of the coating compartment 104, and a filter 118.

[0075] For circulating air within the interior of the coating compartment 104, it is desirable, but not necessary to include an air duct 120. The overall air duct 120 may as such be at a first end connected to a first opening 122 into the interior of the coating compartment 104. A second end of the overall air duct may be connected to a second opening into the interior of the coating compartment 104. In the illustration provided in Fig. 1, the first opening 122 is provided at a “roof section” of the coating compartment 104, whereas the second opening may be provided in a “floor section” of the coating compartment 104.

[0076] The climate property adjustment arrangement is as shown in Fig. 1 arranged intermediate the air duct 120, whereby air is allowed to travel through the portions of the climate property adjustment arrangement. The position of the climate property adjustment arrangement must not necessarily be positioned as is exemplified in Fig. 1. Rather, the climate property adjustment arrangement can be arranged in direct conjunction with the first 122 or the second opening. Furthermore, the parts of the climate property adjustment arrangement must not necessarily be arranged together as is shown in Fig. 1. Rather, it is possible to e.g., space them apart or just keep some of the parts together. Furthermore, it may in line with the present disclosure be possible to omit some of the parts of the climate property adjustment arrangement, such as omitting the heater 114, the fan 116 or filter 118. Still further, e.g., the heater 114 could be arranged within the interior of the coating compartment 104, by including e.g. an infrared heater or similar within the coating compartment 104, such as at the roof section of the coating compartment 104.

[0077] It should be noted that the fan 116 may be arranged to generate an air flow in either of two directions. Accordingly, the fan 116 can be seen as “sucking” air out of the coating compartment 104 or “pushing” air into the coating compartment 104. Either way, air will flow through the coating compartment 104 and the air duct 120.

[0078] The general operation of the coating system 10 is handled by a control unit 126. The control unit 126 is typically electrically connected to and arranged to control the electrical motor 105, the valve, the electrical heater 114 and the fan 116. It may alternatively be possible to connect at least some of the listed devices to the control unit 126 by wireless means, such as e.g., using a Bluetooth, Z-wave, Zigbee or similar connection.

[0079] It may also be possible to include one or a plurality of sensors (not shown) with the coating system 10, where such sensors are connected to the control unit 126. For example, it may be possible to arrange a temperature / humidity sensor within the interior of the coating compartment 104, pressure sensors in relation to the pressurizing arrangement and / or the first reservoir 108. A sensor may also be provided at the door to the coating compartment 104, allowing the control unit 126 to detect if the door 101 is open or closed. Accordingly, such sensors may then be used by the control unit 126 during operation.

[0080] The control unit 126 may also be connected to a control panel (not shown), where the control panel typically is arranged externally of the coating compartment 104. Such a control panel may be used by an operator to control the coating system 10 to coat the shoes 100. In some embodiments the control panel may be electrically connected to the control unit 126. However, the control panel could possibly be provided in the form of a “remote control”, wirelessly connected to the control unit 126.

[0081] In another advantageous embodiment, the system may be provided with a remote monitoring capability, enabling operators to oversee and control the coating process from an external device. Such a configuration may include wireless communication means, allowing the control unit to transmit operational parameters and receive instructions via a mobile device or computer. This capability provides added convenience and flexibility, particularly in environments where the system is part of a larger automated workflow or when remote supervision is necessary.

[0082] The control unit 126 may in some embodiments be a general -purpose processor, an application specific processor, a circuit containing processing components, a group of distributed processing components, a group of distributed computers configured for processing, etc. The processor may be or include any number of hardware components for conducting data or signal processing or for executing computer code stored in memory.

[0083] The memory may be one or more devices for storing data and / or computer code for completing or facilitating the various methods described in the present description. The memory may include volatile memory or non-volatile memory. The memory may include database components, object code components, script components, or any other type of information structure for supporting the various activities of the present description. According to an exemplary embodiment, any distributed or local memory device may be utilized with the systems and methods of this description. According to an exemplary embodiment the memory is communicably connected to the processor, e.g., via a circuit or any other wired, wireless, or network connection.

[0084] In Figs. 2A and 2B there is presented a detailed view of a collection vessel 202 provided as a component of the coating system 10. As is illustrated in Fig. 2A, the collection vessel 202 is provided as an additional component of the coating system 10. The collection vessel 202 is functionally situated below the support 102 within the coating compartment 104. Its primary function is to capture at least a portion of an excess liquid coating solution that fails to adhere to the item during the coating process. The collection vessel 202 is preferably designed with an interior that guides the excess solution towards an outlet 203 for efficient management, thereby ensuring a minimal amount of spillage of the excess liquid coating solution.

[0085] As is further illustrated in Fig. 2A, the support 102 is removably connected to the axis of the motor 105, to facilitate not only the maintenance and cleaning of the support 102 but also allows for easy access to the collection vessel 202 for cleaning and upkeep.

[0086] With further reference to Fig. 2B there is presented a further illustration of an interrelation between the collection vessel 202 and the second reservoir 113, using a conduit 204. As discussed above, the second reservoir 113 is arranged in the auxiliary compartment beneath the coating compartment 104, serves as a storage unit for the excess liquid coating solution collected by the collection vessel 202. The conduit 204 between the collection vessel 202 and the second reservoir 113 is preferably adapted for ensuring efficient transfer of the excess coating solution, preferably achieved by gravity, as the second reservoir 113 is positioned at a lower elevation than the collection vessel 202. The conduit 204 is preferably adapted to ensures a consistent and unobstructed flow of the solution, leveraging gravity to minimize the need for additional mechanical or electrical pumping mechanisms.

[0087] Turning now to Figs. 3 A and 3B, which present exemplary implementations for accessing the system according to the present disclosure. In the illustration presented in Fig. 3 A, each of the coating compartment 104 and the auxiliary compartment are provided with an individual cover. In an exemplary embodiment the (first) door 101, being hinged to a body of the coating system 10 is provided for allowing access to the coating compartment 104. A second cover 304, not necessarily being hinges is additionally provided for covering the auxiliary compartment 101.

[0088] Preferably, at least the first door 101 is provided with e.g., a sealing strip 306, possibly with magnetic features, for ensuring that the first door 101 covers the coating compartment 104 in such a way that a reduced amount of an odor from the liquid coating solution when the coating system 10 is being in operation.

[0089] In Fig. 3B there is presented a detailed illustration of the second cover 304 as being connected to the body of the coating system 10. The connection between the second cover 304 and the body of the coating system 10 may for example be provided by using a plurality of magnets (not explicitly shown), e.g., being integrated with the second cover 304 and / or the body of the coating system 10. The second cover 304 may optionally be provided with a sealing strip in an analogous manner as the first door 302.

[0090] During operation of the coating system 10, with further reference to Fig. 4, the operator will open the door provided at the coating compartment 104 and position the shoes 102 at the structure / disc 106. The operator will then close the door and by means of the control panel initiate the coating procedure. It may in some embodiments be possible to allow the operator to input what type of item that is to be coated, where this information of item type will be used in the coating procedure.

[0091] Once the door to the coating compartment 104 is detected, SI, to be closed, the control unit 126 will activate, S2 the electrical motor 105 to start rotating the structure / disc 106. It may here be optionally possible to lock the door.

[0092] The rotational speed of the structure / disc 106 may for example be dependent on the item type, where e.g., a boot may have a slower rotational speed as compared to a low dress shoe. In some embodiments the rotational speed of the structure / disc 106 is exemplified to be within the range of 1 - 100 rpm. An acceleration / retardation of the structure / disc 106 may also be dependent on the type of the item.

[0093] At this point, the control unit 126 will activate, S3, the valve to start the liquid coating solution to flow from the first reservoir 108, through a conduit connecting the first reservoir 108 and the nozzle 109, and out through the nozzle 109. Since the liquid coating solution in the presented embodiment is pressurized, the nozzle 109 will form a mist of the liquid coating solution that is directed towards the shoes 100, such that the shoes 100 will be coated with a “thin film” of the liquid coating solution at an outer surface of the shoes 100. In one embodiment the valve is operated for 1 - 5 seconds. The operating time for the valve may possibly be dependent on the type of the item, where e.g., a larger item will result in a longer operating time, as compared to what is needed / used for an in comparison smaller item.

[0094] Alternatively, or also, the operating time for the valve may possibly be dependent on an external material of the item, whereas some “glossy” materials may require a shorter operating time due to their inherent ability to repel liquids, as compared to more absorbent materials like suede. Suede, with its textured and porous nature, tends to absorb liquids more readily, necessitating a longer operating time for thorough and even application of the coating solution.

[0095] Such an adaptability in the operating time based on the material type enhances the system's precision in applying the coating. For example, while glossy materials benefit from a swift and minimal application to avoid over saturation, suede or similar materials require a more prolonged exposure to ensure that the coating penetrates the surface effectively.

[0096] The control unit 126, in accommodating these material differences, can adjust the valve’s operation through pre-set programming or manual input, allowing for customization based on the specific properties of each item. This feature is particularly beneficial in situations where the coating system is used for a variety of items with differing material characteristics, ensuring optimal coating quality for each.

[0097] Furthermore, it may also be possible to activate the valve for more than a single time, such as by activating the valve in a plurality of shorter bursts. In some embodiments it may be possible to activate the valve 105 e.g., 2 - 5 times.

[0098] In some implementations, the nozzle may be equipped with an adjustable spray pattern mechanism, allowing the control unit to dynamically alter the distribution pattern of the liquid coating solution during operation. Such a feature enables the system to tailor the spray coverage to suit items of varying sizes and geometries. For example, a narrower spray pattern may be advantageous for smaller, detailed items, while a broader spray pattern can be employed for larger surfaces, ensuring efficient and uniform application across different item types.

[0099] After a first waiting time, such as 5 - 10 seconds, the coating phase of the coating procedure is considered finalized and now the evaporation phase of the coating procedure is initialized. At this point, the control unit 126 will activate, S4, the fan 116 and the heater 114. The fan 116 will as such push a heated air flow into the bottom end of the coating compartment 104, at the second opening into the coating compartment 104. The activation of the fan 116 and the heater 114 will speed up the evaporation of the liquid biosolvent comprised with the liquid coating solution. The coating agent comprised with the liquid coating solution will remain at the shoes 102.

[0100] The electrical motor 105 may continue to spin the structure / disc 102, possibly at a reduced rotational speed as compared to the rotational speed used during the coating phase. It may however be possible to deactivate, S5, the electrical motor 105 such that the rotation of the structure / disc 102 stops.

[0101] The evaporation phase generally proceeds for a duration of e.g., 20 - 100 seconds, preferably 40 - 80 seconds. Once this time has lapsed, the control unit 126 will deactivate, S6, the fan 116 and the heater 114. At this time also the rotation of the structure / disc 106 should have stopped. The operator will at this stage be notified, S7, that the coating procedure is finalized. The operator will then again be given access to the shoes 100 through the door 101.

[0102] In addition, the control functionality of the present disclosure may be implemented using existing computer processors, or by a special purpose computer processor for an appropriate system, incorporated for this or another purpose, or by a hardwired system. Embodiments within the scope of the present disclosure include program products comprising machine-readable media for carrying or having machine-executable instructions or data structures stored thereon. Such machine-readable media can be any available media that can be accessed by a general purpose or special purpose computer or other machine with a processor. By way of example, such machine-readable media can comprise RAM, ROM, EPROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code in the form of machine-executable instructions or data structures and which can be accessed by a general purpose or special purpose computer or other machine with a processor. When information is transferred or provided over a network or another communications connection (either hardwired, wireless, or a combination of hardwired or wireless) to a machine, the machine properly views the connection as a machine-readable medium. Thus, any such connection is properly termed a machine-readable medium. Combinations of the above are also included within the scope of machine-readable media. Machine-executable instructions include, for example, instructions and data which cause a general-purpose computer, special purpose computer, or special purpose processing machines to perform a certain function or group of functions.

[0103] Although the figures may show a sequence the order of the steps may differ from what is depicted. Also two or more steps may be performed concurrently or with partial concurrence. Such variation will depend on the software and hardware systems chosen and on designer choice. All such variations are within the scope of the disclosure. Likewise, software implementations could be accomplished with standard programming techniques with rule-based logic and other logic to accomplish the various connection steps, processing steps, comparison steps and decision steps. Additionally, even though the present disclosure has been described with reference to specific exemplifying embodiments thereof, many different alterations, modifications and the like will become apparent for those skilled in the art. Further, a single unit may perform the functions of several means recited in the claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting to the claim. Furthermore, in the claims, the word ’’comprising” does not exclude other elements or steps, and the indefinite article ”a” or ”an” does not exclude a plurality.

[0104] Variations to the disclosed embodiments can be understood and effected by the skilled addressee in practicing the claimed present disclosure, from a study of the drawings, the disclosure, and the appended claims. The person skilled in the art realizes that the present disclosure is not limited to the preferred embodiments.

Claims

CLAIMS1. A system for coating an item during a coating process, comprising:- a coating compartment,- a support arranged within an interior of the coating compartment, wherein the support is adapted to receive the item,- a first reservoir containing a liquid coating solution,- a nozzle connected to the reservoir, arranged within the interior of the coating compartment, and adapted to selectively distribute the liquid coating solution to the item,- a first collection vessel arranged below the support and configured to receive at least a portion of an excess liquid coating solution of the distributed liquid coating solution not adhering to the item during the coating process, and- a second reservoir arranged to receive at least a portion of the excess liquid coating solution from the collection vessel.

2. The system according to claim 1, wherein the second reservoir is arranged below the support.

3. The system according to claim 2, wherein the collection vessel further comprises an outlet connected to an inlet of the second reservoir to facilitate the transfer of the excess liquid coating solution.

4. The system according to claim 3, wherein the collection vessel further comprises sloped internal surfaces to guide the excess liquid coating solution towards the outlet.

5. The system according to anyone och claims 2 - 4, wherein the second reservoir is positioned at a lower elevation than the collection vessel to utilize gravity for the transfer of the excess liquid coating solution to the second reservoir.

6. The system according to anyone of claims 2 - 5, further comprising a sensor configured to detect a level of the excess liquid coating solution within the second reservoir.

7. The system according to claim 6, wherein the sensor is configured to trigger an alert when the level of the excess liquid coating solution in the second reservoir is above a predefined threshold.

8. The system according to anyone of the preceding claims, wherein the support comprises a perforated surface to encourage a flow of excess liquid coating solution towards the collection vessel.

9. The system according to claim 8, wherein a size of openings of the perforated surface of the support are selected to optimize a balance between a strength of the support and to provide an efficient flow of excess liquid coating solution towards the collection vessel.

10. The system according to anyone of claims 8 and 9, wherein the perforated surface of the support is selectively coated to increase the flow of excess liquid coating solution towards the collection vessel.

11. The system according to anyone of claims 8 - 10, wherein the support is removable from the coating compartment.

12. The system according to anyone of the preceding claims, further comprising:- a control unit adapted to operate the system during the coating process, the coating process comprising a coating phase and a following evaporation phase, and- a climate property adjustment arrangement connected to the control unit and adapted to selectively adjust a climate property within the coating compartment, wherein:- the nozzle is activated by the control unit and distributes the liquid coating solution for at least a portion of the coating phase,- a position of the nozzle is adjusted under the control of the control unit relative to the item for at least a portion of the coating phase, and- the climate property adjustment arrangement is activated for at least a portion of the evaporation phase.

13. The system according to any one of the preceding claims, wherein the liquid coating solution comprise a coating agent mixed with a liquid biosolvent.

14. The system according to claim 13, wherein the liquid biosolvent comprises at least one of water and alcohol.

15. The system according to claim 12, wherein the climate property adjustment arrangement comprises at least one of:- an electrical heating means adapted to increase a temperature within the interior of the coating compartment, and- an air circulating arrangement adapted to circulate air within the interior of the coating compartment.

16. The system according to anyone of the preceding claims, wherein the support is rotatable by means of a thereto connected electrical motor.

17. The system according to any one of the preceding claims, further comprising:- an air duct having a first end connecting the air duct with an interior of the coating compartment at a first position of the coating compartment.

18. The system according to claim 12, wherein the air circulating arrangement comprises a fan and a filter.

19. The system according to any one of the preceding claims, wherein the coating compartment comprises an access door configured to selectively allow access to the interior of the coating compartment.

20. The system according to any one of the preceding claims, wherein the interior of the coating compartment is controlled to be only accessible outside of the coating process.

21. The system according to claim 12, further comprising a control panel arranged external of the coating compartment, connected to the control unit and arranged to allow a user to operate the system.

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