• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This invention relates to a method for applying a compact polyurethane coating to a flexible carrier material (1), comprising providing a flexible carrier material (1), applying a mixture comprising polyurethane components to this flexible carrier material (1) and curing. from the mixture applied on the flexible carrier material (1) to a compact polyurethane coating, whereby at least a part of the mixture is partially cured, before it is applied to the flexible carrier material (1). In addition, this invention relates to a specific device (10) with which such a method can be performed.
    公开号:BE1023124B1
    申请号:E2015/5104
    申请日:2015-02-26
    公开日:2016-11-25
    发明作者:Gert Raeymackers；Jurgen Mispelon；Steven Desmet；Jürgen DESURE；Geert Vercruysse
    申请人:Vetex Nv；
    IPC主号:
    专利说明:

    METHOD AND APPARATUS FOR APPLYING A COMPACT POLYURETHANE COATING ON A FLEXIBLE
    CARRIER MATERIAL
    This invention relates to a method for applying a compact polyurethane coating to a flexible carrier material, comprising providing a flexible carrier material, applying a mixture comprising polyurethane components to this flexible carrier material and curing the applied to the flexible carrier material. mix to a compact polyurethane coating.
    In addition, this invention relates to a specific device with which a compact polyurethane coating can be applied to a flexible carrier material according to such a method.
    There are currently various methods for applying a compact polyurethane coating to a flexible support material. For example, there are solvent-based and water-based processes on the one hand and extrusion methods on the other, with which polyurethane is applied either directly to the support material or via a transfer substrate.
    Traditional methods use solvents in which polyurethane is dissolved to apply to the carrier material, after which the solvent is evaporated.
    These methods make it easy to incorporate functional properties such as, for example, fire resistance, antistatic properties, antimicrobial properties, antiviral properties, etc. With solvent-based methods it is possible to obtain thin coatings with a small tolerance on the thickness. Good homogeneity can be achieved. The formulation process is simple and rapid production changes are possible.
    The disadvantages of solvent-based coatings are the ecological footprint of residual pastes, volatile organic compounds, etc., the high energy consumption of the coating process and the high investment costs.
    Due to the stricter regulations regarding solvents, more and more water-based methods are being applied. Hereby, an emulsion or a dispersion of polyurethane in water is applied to a carrier material and the water is evaporated. Originally, the polyurethane was first dissolved in solvent for this purpose and then the solvent was replaced by water. In newer methods, non-solvent-based dispersants are used to make an emulsion or dispersion of polyurethane in water or the polyurethane is immediately put in water in emulsion or dispersion.
    With these water-based methods, relatively thin coatings can also be applied with a relatively small tolerance on the thickness. However, this cannot achieve the same thin coatings as with the use of solvents. This also makes relatively quick production changes possible.
    However, water-based processes are much more expensive than solvent-based processes, are more difficult to formulate and have an even higher energy cost for evaporating the water. In addition to the technical shortcomings with regard to, for example, washing resistance, the possibilities for applying transfer coating are limited, due to the lack of suitable transfer paper and because the few types of suitable transfer paper are particularly expensive. Combinations of certain properties such as weldability and wash resistance are problematic.
    Extrusion is probably the most commonly used method for applying a polyurethane film. This method is completely solvent-free. In the case of extrusion, granules of thermoplastic polymers, for example thermoplastic polyurethane, are melted in an extruder and transported to the coating system, which can for instance be designed as a mold or a calender, etc.
    The production process is fast and relatively inexpensive.
    However, disadvantages of this are that they do not allow rapid production changes (changes in polymer, color changes, cleaning cycle, etc.), that there are greater tolerances on the thickness of a polyurethane film produced with this and that it is difficult to obtain thin coatings. The possible formulations are limited and the method can only be applied to thermoplastics.
    Reactive extrusion uses a combination of dissolving in solvent and extruding pellets, this resulting in a combination of the advantages and disadvantages of both.
    In the automotive sector, for window coverings, for artificial leather, floor coverings, shoe soles, etc., polyurethane is also applied in 2 components to a support material, the reaction taking place on site, after applying the components to the support material. However, the known processes cannot be used for coating textiles because they require too long curing times. It has already been attempted to adapt these processes, encountering some problems, whereby the coating penetrates or even passes through the flexible carrier material. This results in insufficient adhesion, and / or poor surface quality, and / or a too stiff whole, etc.
    The object of this invention is therefore to provide a workable solvent-free method for applying a compact polyurethane coating to a flexible support material, with which the same advantages can be obtained as with the current solvent-based methods.
    This object of the invention is achieved by providing a method for applying a compact polyurethane coating to a flexible carrier material, comprising providing a flexible carrier material, applying a mixture comprising polyurethane components to this flexible carrier material and curing the mixture applied to the flexible carrier material into a compact polyurethane coating, wherein at least a part of the mixture is partially cured before it is applied to the flexible carrier material.
    By curing at least a part of the mixture before it is applied to the flexible carrier material, the viscosity of the mixture comprising polyurethane components applied to the carrier material is increased and this mixture penetrates less deeply into the flexible carrier material.
    The flexible carrier material can be textile (fabric, knit or non-woven) or paper, a breathable membrane, glass fiber, etc. If this flexible carrier material is textile, it can be made from polyester, or from cotton, aramid, combinations of these, etc.
    The blend comprising polyurethane components will normally include a polyol blend, an isocyanate blend, and any additives. To influence the process, such additives are, for example, chain extenders, crosslinkers, leveling products, release agents, anti-foaming agents, etc. To impart the desired properties to the end product, such additives are, for example, antibacterial products, reflective or afterglowing pigments, fillers, density-reducing additives, etc. mixture comprising polyurethane components is completely free from solvents and water.
    In a preferred method of this invention, a transfer substrate is provided to which the mix is applied, so that a partially cured mix is obtained on the transfer substrate, and the partially cured mix is transferred from the transfer substrate to the flexible support material.
    Currently, when coating on textile, either the coating is applied to the flexible support material prior to curing or after curing. Work is now being done in between and the coating is applied to the flexible support material when it is partially cured. As a result, the coating penetrates less deeply into the flexible carrier material than if it had not yet partially cured. The moment of applying the coating on the flexible carrier material can be controlled here as a function of the type of carrier material.
    Typical transfer paper can be chosen as the transfer substrate. This can be a foil that can for instance be manufactured from paper or metal or plastic. Characteristic of such a transfer substrate is that it is suitable for applying polyurethane components thereto and allowing these components to cure at least partially to form a polyurethane coating, whereby the transfer substrate can then be detached from this polyurethane coating.
    This mixture comprising polyurethane components is preferably applied evenly over the entire surface of the transfer substrate, which is subsequently brought into contact with the flexible carrier material to transfer the mixture to this flexible carrier material.
    Such a transfer substrate can be flat, but can for instance also be provided with a relief.
    In such a method according to the present invention, the mixture is preferably partially cured on the transfer substrate. More specifically, the transfer substrate can for this purpose be exposed to an energy source to partially cure the mixture applied thereto.
    To expose the transfer substrate to an energy source, it may, for example, be exposed to an elevated temperature in, for example, an oven or to heated surfaces, to IR light, to UV light, etc. or to other influences which cause the curing of the mix comprising polyurethane components.
    In a particularly preferred variant of such a method according to the present invention, the partially cured mixture of the transfer substrate is transferred to the flexible carrier material when the viscosity of the partially cured mixture is between 150% and 800% of the lowest viscosity of this partially cured mixture. achieved.
    The smaller this viscosity when the mixture is applied to the flexible support material, the higher the penetration into the fabric and the greater the chance of breakdown. The higher this value, the lower the penetration and therefore the less chance of breakdown, but also the lower the adhesion and therefore the less resistant to mechanical stress.
    The choice for the moment of insertion of the carrier material within the aforementioned ranges depends, inter alia, on the following factors: - Type of fabric: the thickness and absorbent properties of the flexible carrier material. With heavier cloths and with less absorbent cloths there is less risk of breakdown so that the flexible carrier material is preferably already inserted at lower values. - Desired touché: the later the fabric is inserted, the more flexible the coated support material will feel because less coating has penetrated into it. - The adhesion: when inserting at a lower viscosity, the adhesion and therefore also the performance at washing will in principle be better than when inserting at a higher viscosity.
    Preferably, the partially cured mix is only transferred to the flexible substrate when the viscosity is between 150% and 500% of the lowest viscosity and even more preferably between 150% and 300% of the lowest viscosity.
    This viscosity can be determined for this purpose with the MCR301 device from Anton Paar. The viscosity is hereby determined on the basis of an oscillating critical shear stress. This test is typically used for curing resins.
    To determine the viscosity with this device, the sample to be measured is placed between the measuring head and the measuring dish. The measuring head is allowed to move at an angular speed of 10 rad / s. The measuring head hereby causes a certain deformation in the steel. The force required for this is used to calculate the complex viscosity.
    The flexible carrier material is further preferably exposed to an energy source to cure the mixture applied thereto. In order to expose it to an energy source, it may, for example, be exposed to an elevated temperature in, for example, an oven, to IR light or to other influences which can influence the curing of the mixture comprising polyurethane components.
    An additional object of the present invention is to provide a device with which an above-mentioned method according to the present invention can be applied.
    This object is achieved by providing a device for applying a compact polyurethane coating to a flexible support material, comprising: - a substrate supply device for supplying a transfer substrate; - a coating head for applying a mixture comprising polyurethane components to the transfer substrate; - a carrier material supply device for supplying a flexible carrier material; - a laminating device for bringing the supplied transfer substrate together with the mixture applied thereto and the supplied flexible carrier material, for transferring the mixture from the transfer substrate to the flexible carrier material; - an energy source for exposing the transfer substrate and flexible carrier material brought together with the laminating device to energy for curing the mixture applied thereto; wherein the carrier material feeding device is provided to bring the flexible carrier material directly to the laminating device and wherein this device additionally comprises an energy source for exposing the mixture applied to the transfer substrate to energy for partially curing the mixture applied thereto, said energy source being arranged is between the coating head and the laminating device such that the transfer substrate is brought directly from this energy source to the laminating device.
    With the aid of this energy source, which is arranged between the coating head and the laminating device, a mixture applied to the transfer substrate with the aid of the coating head can be partially cured, before the transfer substrate and the flexible carrier material are brought together using the laminating device, so that the mixture is partially cured before it is applied to the flexible carrier material. As a result, the mixture comprising polyurethane components penetrates less deeply into the flexible carrier material upon transfer thereof to this flexible carrier material.
    A particular device according to the present invention comprises an additional coating head which is arranged to apply an additional coating to the transfer substrate prior to applying the mixture with the aid of the first-mentioned coating head and comprises an additional energy source which is arranged between the additional coating head and the first-mentioned coating head, for at least partially curing this additional coating on the transfer substrate.
    With the help of this additional coating head, for example, a top layer can be applied to give the flexible support material with a compact polyurethane coating applied to it additional properties, such as a water column (HSH), touché, a printable surface, anti-slip, an adapted appearance (mat) , shiny, color, relief, ...), scratch resistance, antibacterial properties, etc.
    This additional coating can be cured at least partially with this additional energy source and then further cured together with the compact polyurethane coating or can be fully cured before the mixture comprising polyurethane components is applied to it.
    In addition to the said coating heads and said energy sources, a device according to the present invention can also be provided with further coating heads and / or further energy sources.
    At least one of the mentioned energy sources of a device according to the present invention is preferably designed as an oven or an IR field. Alternatively, but less favorably, heated plates could also be used as an energy source, or UV lamps, etc.
    Said coating heads can be designed as ironing heads, whereby paste is applied for a knife. The pasta can be poured or pumped for this knife. Alternatively, these coating heads could for example also be designed as castings and / or as spray heads, etc.
    A device according to the present invention preferably further comprises a separation device for separating the transfer substrate from the flexible carrier material with the mixture transferred thereto.
    The compact polyurethane coating can be fully cured before the transfer substrate is separated from the flexible support material. However, it is also possible to allow the compact polyurethane coating to cure further after the transfer substrate has been separated from the flexible support material.
    The present invention will now be further elucidated with reference to the following detailed description of some preferred methods and devices according to the present invention. The purpose of this description is only to provide clarifying examples and to indicate further advantages and details of this invention, and thus cannot be interpreted as limiting the scope of the invention or the patent rights requested in the claims.
    In this detailed description reference is made to the accompanying drawings by reference numerals, in which - part 1 of a first embodiment of a device according to the present invention is schematically represented; Figure 3 shows the complex viscosity of a mixture as a function of time.
    The device (10) shown in Figure 1 for applying a compact polyurethane coating to a flexible support material (1) comprises a coating knife disposed above a coating roll (5) as a coating head (4) for applying a mixture comprising polyurethane components to a transfer substrate (2). When working with a transfer substrate (2), any mixture with a pot life (open time) of more than 10 minutes is in principle suitable for this. When the mixture is applied directly to the carrier material (1), the pot life may be less when the rotation speed is increased. A transfer substrate (2) is used in the illustrated devices.
    For example, PET film can be chosen as the transfer substrate (2).
    This transfer substrate (2) is supplied with the aid of a feed device (not shown). This may, for example, initially be rolled up on a roll and be rolled from it and fed through and over rolls to the depicted parts of the device (10). It is also possible, for example, to use a conveyor belt as a transfer substrate (2).
    The transfer substrate (2) is preferably supplied at a speed of 5 to 12 m / min depending on the type of polyurethane. Even more preferably, this speed is chosen between 10 and 12 m / min. This speed will typically be selected depending on the type of polyurethane and the edition.
    An oven (3a) is arranged after said coating head (4), for heating the transfer substrate (2) with the mixture applied to it, to partially cure this mixture. Preferably, the temperature to which the transfer substrate (2) with the mixture applied to it is exposed is between 60 ° C and 100 ° C. The residence time in the oven depends on the reaction behavior of the PU system and the heating sources. The transfer substrate (2) with the mixture applied to it is hereby heated, for example, for about 3 minutes at 80 ° C.
    Furthermore, in the description of the graph from Figure 3, it is indicated how best it is determined to what extent the mixture should be partially cured.
    After the oven (3a) a laminating device (9) is arranged, which here consists of pressure rollers (9), with which the transfer substrate (2) is brought together with a flexible carrier material (1), which is supplied with a feed device (not shown). This flexible carrier material (1) can, for example, initially be rolled up on a roll and rolled from it and fed through and over rollers up to the illustrated laminating device (9). Typical carrier materials (1) are knits, fabrics, glass webs, non-woven, breathable membranes, etc.
    After the laminating device (9), a few further furnaces (3b, 3c) are arranged, with which the mixture is further cured. The further hardening depends on how far the mixture has already hardened. This mixture can for instance be further cured for 2.5 to 6 minutes in an oven of 25 to 30 m long at a temperature between 60 to 100 ° C.
    After this, a separation device (not shown) is arranged, with which the transfer substrate (2) is detached from the flexible carrier material (1) with the compact polyurethane coating cured on it.
    In the device (10) as shown in Figure 1, an additional coating head (6) and additional ovens (8a, 8b, 8c) are arranged prior to the aforementioned coating head (4), with which an additional coating can be applied prior to the polyurethane coating. be applied and cured.
    The graph in Figure 3 shows how it can be determined to what extent the mixture is best cured before it is applied to the flexible carrier material. The system used for this test is IMAPUR SF POL -IMAPUR SF ISO with INDEX 100.
    To compile this graph, a new Disc-shaped disposable measuring head of 25 mm diameter was fitted in an MC Paar device MCR301. The zero point of the rheometer has been set.
    With the aid of a 5 ml plastic syringe, 5 g of polyol was weighed. To prepare a sample and charge the device, the following operations were performed within 3 minutes: - Addition of isocyanate (8.37) g with the aid of a 5 ml plastic syringe. The said 3 minutes started from the first contact between polyol and isocyanate. Thickening of the isocyanate was counteracted as well as possible by removing the isocyanate from deeper layers of the container. - Mixing polyol and isocyanate with the help of a spatula, whereby air inclusions are avoided as much as possible. - Inserting the steel into the device. - The closing of the rheometer with a clearance of 0.5 mm. With a smaller clearance, the measuring scale influences the measurements too much. - Removing excess steel so that only steel material was present under the disc-shaped measuring head with a diameter of 25 mm. - Closing the oven of the device.
    After the aforementioned 3 minutes the measurement in the rheometer was started.
    The graph also starts here. In the graph, time 0 is therefore 180 s after the first contact between polyol and isocyanate.
    During the rheometer measurement, every second was measured for 90 minutes at 18 ° C and every second in a second step (60 ° C or 120 ° C in the graph). The heat-up rate was approximately 5.5 ° C / 10s.
    In the graph the complex viscosity measured in Pa.s is plotted as a function of time in s.
    This graph is identical in form for each polyurethane 2-component system, but the different points (x, y, z, z 'A, B) may fall at a different time at the same temperature.
    The different points and zones in the graph are: - Point x: start of the measurement 180 seconds after the first contact between polyol and isocyanate. - Point y: end of the first temperature plateau after 90 seconds. The second step of the measurement starts from this point. From here follows a rise in temperature to 60 ° C and 120 ° C respectively. - Zone between point x & point y: steady reaction at room temperature. This is 18 ° C in the measurement process used. The average molecular mass increases as a result of the reaction. M.a.w. larger molecules are formed. Larger molecules show a higher viscosity, which is clearly visible in the graph. The faster the system responds, the faster the graph in this zone will rise. Other influences are: speed and thoroughness of the mixing, amount of energy supplied during mixing, selected mixture, presence of air bubbles in the sample, etc. - Point z: the point with the lowest viscosity at 120 ° C in step 2 of the measurement procedure . - Point z ': the point with the lowest viscosity at 60 ° C in step 2 of the measurement procedure. - Zone between point y and point z or z ": decreasing viscosity. This is a so-called viscosity drop. The temperature rises in this zone. As with the vast majority of liquids (the polyol - isocyanate mixture is still liquid, because it has not reacted yet), the viscosity decreases with increasing temperature. At the same time, reactivity will increase due to the rising temperature. Continuing and accelerating the reaction will increase the viscosity. Point z or z 'marks the point where the falling viscosity as a result of the rising temperature is compensated for by the rising viscosity as a result of the further reaction.
    Beyond this point, the farther-reaching reaction wins over the rising temperature. The result is a rising viscosity from this point. It also becomes clear here that the temperature from analysis step 2 has a clear influence on the length of the viscosity drop but much less pronounced on the size of the viscosity drop. This point will vary over time according to the temperature in analysis step 2. Hence also the points z and z ". A faster responsive system will show a similar graph but the point z will shift further to the left (earlier time point) at the same temperature in analysis step 2. The reverse is true for a slower responsive system. Other influences are: speed and thoroughness of mixing, amount of energy supplied during mixing, selected mixture, presence of air bubbles in the sample, etc. - Point A: minimum viscosity at which the mixture can preferably be applied to a carrier material according to the present invention . This point lies with the different curves at a viscosity of approximately 150% of the lowest viscosity (z, z ') - Point B: maximum viscosity at which the mixture can preferably be applied to a carrier material according to the present invention. This point lies with the different curves at a viscosity of approximately 800% of the lowest viscosity (z, z '). Zone between point A and point B: viscosity range in which the mixture can preferably be applied to a carrier material according to the present invention, this is between 150% and 800% of the lowest viscosity (z, z ').
    Within this range, the point of application of the mixture to the carrier material (the point of insertion of the cloth) is then preferably chosen such that: - The viscosity achieved is already sufficiently high to prevent the carrier material from being reached absorbs too much of the reacting mixture. If this is the case, then this will result in a carrier material that feels harder. The viscosity achieved is still sufficiently low that a part of the reacting mixture penetrates into the carrier material to obtain a substantially mechanical adhesion. The part of the mixture that does not penetrate into the carrier material provides adhesion to the optional first coating layer or forms the closed coating layer on the carrier material.
    By using pressure when applying the mixture to the carrier material, the viscosity range at which the insertion can be carried out with the desired result is both increased and slightly abandoned. The pressure applied helps to improve penetration into the carrier material, while at the same time increasing the minimum viscosity. This results in a more robust process that is less sensitive to external factors. However, applying pressure when inserting is not necessary and may be undesirable in a number of cases.
    In practice, this means that: - Heavier, more closed, poorer absorbent carrier material will preferably be inserted closer to point A than to point B. Lighter, more open, better absorbent carrier material will preferably be inserted closer to point B than to point A.
    The properties mentioned above depend on the material from which the carrier material is composed (PES-CO-aramid-glass-fiber-synthetic-natural ...), the weight of the material, the type of fibers used (roughened, monofilament, multifilament ... ), any pre-treatment of the material (water-repellent, dirt-repellent, ...), applied production technique, remnants of products from the manufacturing process, paints, etc.
    The graph shows what happens during the production process of a carrier material coated with a 2-component system. The aim is to, based on this graph, adjust the production speed and temperature of the first oven (between the knife and the insertion of the carrier material) such that at the point of insertion (due to the ease of production or the process robustness) point is chosen) the optimum viscosity is reached. In practice, therefore, multiple combinations of speed, pre-curing temperature and pressure are possible to achieve an optimum result.
    Because this measurement method represents a complex viscosity (viscosity based on critical shear stress), the time course must naturally be translated into the production process. Based on a limited number of systems that are used as a standard line, this is easy for a person skilled in the art to implement. The exact construction of the industrial line, the chosen type and the capacity of the heating, ... will greatly influence this conversion.
    Specific embodiments 1) PES interlock knit of 100 g / m2
    In the first instance, a top layer of 50 g / m2 is applied that is fully cured. The adhesive layer of 50 g / m2 is then applied to this layer, onto which the cloth is laid.
    Different knits were coated in this way, each time the cloth was inserted at a different viscosity: - At 200% of the lowest viscosity: - 3 minutes of precuring at 60 ° C before inserting the cloth. - Measured adhesion: 7 N / 2.2 cm. - At 257% of the lowest viscosity: - Precision for 3 minutes at 80 ° C before inserting the cloth. - Measured adhesion: 30 N / 2.2 cm. - At 275% of the lowest viscosity: - Precision for 3 minutes at 100 ° C before inserting the cloth. - Measured adhesion: 9N / 2.2 cm. - At 290% of the lowest viscosity: - 3 minutes of precuring at 120 ° C before inserting the cloth. - Measured adhesion: 6N / 2.2 cm. 2) Cotton fabric of 120 g / m2
    In the first instance, a top layer of 50 g / m2 is applied that is fully cured. The adhesive layer of 50 g / m2 is then applied to this layer, onto which the cloth is laid.
    Different cotton fabrics were coated in this way, each time the cloth was inserted at a different viscosity: - At 200% of the lowest viscosity: - Precision for 3 minutes at 60 ° C before inserting the cloth. - Measured adhesion: 7 N / 2.2 cm. - At 257% of the lowest viscosity: - Precision for 3 minutes at 80 ° C before inserting the cloth. - Measured adhesion: 50 N / 2.2 cm. - At 275% of the lowest viscosity: - Precision for 3 minutes at 100 ° C before inserting the cloth. - Measured adhesion: 20 N / 2.2 cm. 3) PES fabric of 57 g / m2
    In the first instance, a top layer of 50 g / m2 is applied that is fully cured. The adhesive layer of 50 g / m2 is then applied to this layer, onto which the cloth is laid.
    Different PES fabrics were coated in this way, each time the cloth was inserted at a different viscosity: - At 200% of the lowest viscosity: - Precision for 3 minutes at 60 ° C before inserting the cloth. - Measured adhesion: 4N / 2.2 cm. - At 257% of the lowest viscosity: - Precision for 3 minutes at 80 ° C before inserting the cloth. - Measured adhesion: 35 N / 2.2 cm. - At 275% of the lowest viscosity: - Precision for 3 minutes at 100 ° C before inserting the cloth. - Measured adhesion: 35 N / 2.2 cm. - At 290% of the lowest viscosity: - 3 minutes of precuring at 120 ° C before inserting the cloth. - Measured adhesion: 20 N / 2.2 cm.
    权利要求:
    Claims (11)
    [1]
    C O N C L U S I E S
    A method for applying a compact polyurethane coating to a flexible support material (1), comprising providing a flexible support material (1), applying a mixture comprising polyurethane components to this flexible support material (1) and curing the mixture applied to the flexible carrier material (1) into a compact polyurethane coating, characterized in that at least a part of the mixture is partially cured before it is applied to the flexible carrier material (1).
    [2]
    Method according to claim 1, characterized in that a transfer substrate (2) is provided on which the mixture is applied, so that a partially cured mixture is obtained on the transfer substrate (2) and the partially cured mixture is transferred from the transfer substrate (2) transferred to the flexible carrier material (1).
    [3]
    Method according to claim 2, characterized in that the mixture on the transfer substrate (2) is partially cured.
    [4]
    Method according to claim 3, characterized in that the transfer substrate (2) is exposed to an energy source (3a) to partially cure the mixture applied to it.
    [5]
    Method according to one of claims 2 to 4, characterized in that the partially cured mixture is transferred from the transfer substrate (2) to the flexible carrier material (1) when the viscosity of the partially cured mixture is between 150% and the 800% of the lowest viscosity is that reached this partially cured mixture, preferably between 150% and 500% and even more preferably between 150% and 300%.
    [6]
    Method according to one of the preceding claims, characterized in that the flexible carrier material (1) is exposed to an energy source (3b, 3c) to cure the mixture applied to it.
    [7]
    Device (10) for applying a compact polyurethane coating to a flexible carrier material (1), comprising: - a substrate supply device for supplying a transfer substrate (2); - a coating head (4) for applying a mixture comprising polyurethane components to the transfer substrate (2); - a carrier material supply device for supplying a flexible carrier material (1); - a laminating device (9) for bringing the supplied transfer substrate (2) together with the mixture applied thereto and the supplied flexible carrier material (1), for transferring the mixture from the transfer substrate (2) to the flexible carrier material (1); - an energy source (3b, 3c) for exposing the transfer substrate (2) and flexible carrier material (1) assembled with the laminating device (9) to energy for curing the mixture applied thereto; characterized in that the carrier material feeding device is provided to bring the flexible carrier material (1) directly to the laminating device (9) and that this device (10) comprises an energy source (3a) for exposing the material to the transfer substrate (2) applied mix of energy for partially curing the applied mix wherein this energy source (3 a) is arranged between the coating head (4) and the laminating device (9) such that the transfer substrate (2) directly from this energy source (3 a) is brought to the laminating device (9).
    [8]
    Device (10) according to claim 7, characterized in that the device (10) comprises an additional coating head (6) arranged to be applied to the transfer substrate with the aid of the first-mentioned coating head (4) prior to applying the mixture (2), to apply a coating to the transfer substrate (2) and that the device (10) comprises an additional energy source (8a, 8b, 8c) arranged between the additional coating head (6) and the first-mentioned coating head (4) ), for at least partially curing this coating on the transfer substrate (2).
    [9]
    Device (10) according to claim 7 or 8, characterized in that at least one of said energy sources (3a, 3b, 3c, 8a, 8b, 8c) is designed as an oven.
    [10]
    Device (10) according to claim 7 or 8, characterized in that at least one of said energy sources (3a, 3b, 3c, 8a, 8b, 8c) is designed as an IR radiation source.
    [11]
    Device (10) according to one of claims 7 to 10, characterized in that the device (10) comprises a separation device for separating the transfer substrate (2) from the flexible carrier material (1) with the mixture transferred thereto.
    类似技术:
    公开号 | 公开日 | 专利标题
    US8512804B2|2013-08-20|Method and apparatus for finishing a wood panel
    FI107029B|2001-05-31|Method and plant for continuous coating of a metal strip
    KR20090118855A|2009-11-18|Hotmelt process for producing a chemically crosslinked polyurethane film
    TW201319355A|2013-05-16|Artificial leather with improved flexing endurance properties
    BE1023124B1|2016-11-25|Method and device for applying a compact polyurethane coating on a flexible carrier material
    CN101679710A|2010-03-24|Thermoplastic resin composition, molded resin articles and polarizer protecting film made by using thr same, and process for production of the articles
    Shim2019|Coating and laminating processes and techniques for textiles
    CN102153962A|2011-08-17|Method for manufacturing environment-friendly pressure sensitive adhesive material
    KR20170066940A|2017-06-15|a synthetic leather using silicone rubber
    KR20170047283A|2017-05-04|Method for adhesively bonding two sheet-like substrates
    US10414942B2|2019-09-17|Adhesive promoters and methods for use on polar textile to bond non-polar substrates
    TW201111844A|2011-04-01|Roll of optical sheet material and continuous manufacturing method of liquid crystal display device
    CN105801810A|2016-07-27|Preparation method of high-glossiness high-water-permeability polyurethane resin
    CA2966095C|2021-02-09|Method for pre-preg manufacturing
    CN102933644A|2013-02-13|Method and apparatus for fabricating optical film
    CN104076426A|2014-10-01|Polarizing plate, liquid crystal display device and method for manufacturing the polarizing plate
    CN102260465A|2011-11-30|Method for manufacturing pressure-sensitive adhesive material
    CN1532516B|2010-04-28|Method for producing optical element
    KR20180001065A|2018-01-04|Complex rubber sheet having a rubber sheet layer and a thermoplastic synthetic resin layer, and process for producing the same
    SU500741A3|1976-01-25|The method of obtaining the combined material
    WO2016201375A1|2016-12-15|Composite materials with binder-enhanced properties and method of production thereof
    KR101492728B1|2015-02-11|polyurethane resin composition for artificial leather impregnation
    KR101643284B1|2016-07-28|A method for manufacturing a polyurethane artificial leather
    US10889072B2|2021-01-12|Method for pre-preg manufacturing
    CN109219519A|2019-01-15|The manufacturing method and Photocurable resin composition of laminated body
    同族专利:
    公开号 | 公开日
    BE1023124A9|2017-02-02|
    EP3061532B1|2019-12-04|
    BE1023124A1|2016-11-25|
    EP3061532A1|2016-08-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3575754A|1962-01-31|1971-04-20|Ici Ltd|Manufacture of thermoplastic sheet material|
    GB1101911A|1964-07-21|1968-02-07|Ici Ltd|Method of forming a patterned surface sheet material|
    BE1013333A3|2000-02-29|2001-12-04|Vetex Nv|Method for coating a flexible substrate by means of a thermoplasticpolyurethane coating|
    WO2015110953A1|2014-01-23|2015-07-30|Giacomino Adolfo Agosti|Method for making a product of the type comprising a laminar supporting element and an upgrading layer and corresponding system.|
    GB1014605A|1962-01-30|1965-12-31|Dunlop Rubber Co|Improvements relating to a method of coating textile fabrics|
    US3539424A|1968-05-09|1970-11-10|Wharton Ind Inc|Polyurethane film and laminate thereof|
    US3844862A|1972-10-20|1974-10-29|Atlantic Richfield Co|A method of coating fabrics with polyurethane|
    DD235469A1|1985-03-15|1986-05-07|Adw Ddr|METHOD FOR THE PRODUCTION OF SOFT BREATHABLE ARTIFICIAL LEATHER|
    DD254403A1|1986-12-05|1988-02-24|Akad Wissenschaften Ddr|POLYURETHANE COATING FOR THE SURFACE FINISHING OF WOVEN FABRICS, GEARS, FLEECES OR LEATHER AFTER THE REVERSE COATING PROCESS|
    DE102005012812A1|2005-03-17|2006-09-21|Basf Ag|Process for the preparation of polyurethane layers and their use as artificial leather|
    WO2013040765A1|2011-09-21|2013-03-28|Basf Se|Artificial leather with improved flexing endurance properties|US20180345625A1|2017-05-31|2018-12-06|Vetex Nv|Marking element|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    BE20155104A|BE1023124A9|2015-02-26|2015-02-26|Method and device for applying a compact polyurethane coating on a flexible carrier material|BE20155104A| BE1023124A9|2015-02-26|2015-02-26|Method and device for applying a compact polyurethane coating on a flexible carrier material|
    EP16157241.7A| EP3061532B1|2015-02-26|2016-02-25|Method for the transfer of a partially cured polyurethan coating to a flexible support|
    [返回顶部]