Apparatus and method for mixing and processing rubber

Abstract

An apparatus for mixing and processing rubber, comprising a device for mixing a first rubber mixture, wherein the first rubber mixture has a first temperature; and a device for mixing a second rubber mixture, wherein the second rubber mixture has a second temperature; the device for mixing the second rubber mixture further comprising a device for receiving at least one of the first rubber mixture or a third rubber mixture, wherein the third rubber mixture is based on the first rubber mixture; a device for feeding a pre-mix rubber to a chamber of the device for mixing the second rubber mixture, wherein the pre-mix rubber has a temperature equal to or lower than the first temperature of the first rubber mixture; and a device for feeding a cooling fluid to the chamber of the device for mixing the second rubber mixture, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber mixture.

Description

Technical Field Technical Field

[0002] This disclosure relates in its entirety to an apparatus and method for mixing and processing rubber. Background Technology

[0003] In current rubber compounding processes, the rubber batch or rubber mixture needs to be cooled before further compounding steps and subsequent final processing.

[0004] Generally, because the temperature variations of rubber compounds are difficult to control, a single internal mixer cannot perform all mixing steps at once to produce the final rubber batch. Therefore, the rubber compound must be cooled after each mixing step, dissipating heat at low temperatures through water cooling and air cooling. In particular, the rubber compound must be cooled in a dedicated cooling tunnel (batch cooling device). Therefore, more than one mixing step is usually required to complete the final product.

[0005] EP 4058262 A1 relates to a continuous mixing process. However, in a continuous mixing process, it is difficult to achieve a productivity level comparable to that achieved by an internal mixer.

[0006] DE 4407144 A1 relates to a mixing apparatus using a first internal mixer and a second internal mixer, wherein additional cold rubber is added to lower the temperature of the rubber mixture. However, the dispersion of just the two different rubber mixtures requires time to achieve a uniform temperature in the final mixture.

[0007] EP 1382425 A2 relates to a mixing apparatus having two mixing chambers, wherein a coolant can be added to the second mixing chamber.

[0008] To improve current rubber compounding processes, new equipment and methods are needed to provide more efficient and accelerated compounding and cooling processes for processing rubber. Summary of the Invention

[0009] The above objectives are achieved by the apparatus and method disclosed herein for mixing and processing rubber. The invention proposes connecting multiple (e.g., at least two) mixers (e.g., internal mixers) in series, wherein at least one mixer is provided with means for feeding premixed rubber (e.g., a side-feed rubber feeder) and means for feeding cooling fluid to achieve rapid temperature regulation of the processed rubber mixture.

[0010] According to a first aspect, the present invention provides an apparatus for mixing and processing rubber. The apparatus includes means for mixing a first rubber mixture having a first temperature; and means for mixing a second rubber mixture having a second temperature. The means for mixing the second rubber mixture further includes: means for receiving at least one of the first rubber mixture or a third rubber mixture, wherein the third rubber mixture is based on the first rubber mixture; means for feeding premixed rubber into a chamber of the means for mixing the second rubber mixture, wherein the premixed rubber has a temperature equal to or lower than the first temperature of the first rubber mixture; and means for feeding cooling fluid into a chamber of the means for mixing the second rubber mixture, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber mixture.

[0011] An apparatus comprising more than one device for mixing rubber compounds (e.g., a device for mixing a first rubber compound and a device for mixing a second rubber compound), allowing the first rubber compound mixed by the device for mixing the first rubber compound to be transferred to the device for mixing the second rubber compound and further processed by the device for mixing the second rubber compound.

[0012] A device is provided for feeding premixed rubber and for feeding cooling fluid into a chamber of a device for mixing a second rubber compound, allowing the addition of cold rubber and / or water prior to mixing the second rubber compound. In this manner, the rubber batch can be cooled to a desired temperature level. For example, a series of connected mixers, wherein at least one mixer includes a device for feeding premixed rubber and cooling fluid, allowing all components to be added to the rubber compound without performing separate rubber cooling (e.g., in a cooling tunnel) after each mixing step.

[0013] The combination of feeding cold premixed rubber with the chamber of the apparatus for feeding cooling fluid into the second rubber compound further accelerates the cooling process of the rubber compound. In this way, the capacity of the mixing system increases, and the total energy required for mixing the rubber is reduced. In particular, no unnecessary heat is dissipated during the various cooling steps, thus providing a more efficient and sustainable mixing process.

[0014] In one example, the apparatus used to mix the first or second rubber mixture can be an internal mixer.

[0015] In one example, the device for feeding premixed rubber can be a rubber metering system.

[0016] In one example, a rubber metering system may include a sheet loader, a metering system for abrasive materials, or an extruder.

[0017] In another example, the apparatus for feeding premixed rubber can be configured to feed cold or preheated rubber into the processed (e.g., first) rubber mixture. For example, the premixed rubber may be premixed in another internal mixer and / or may be received from a rubber buffer conveyor.

[0018] In one example, the temperature of the premixed rubber or the temperature of the cooling fluid fed into the chamber of the apparatus for mixing the second rubber compound may be below 120°C, preferably below 100°C. Therefore, the temperature of the (second) rubber compound (mixed by the apparatus for mixing the second rubber compound) will rapidly decrease to below 130°C, preferably below 120°C.

[0019] According to the second aspect, the equipment may further include means for mixing a third rubber compound, wherein the third rubber compound may have a third temperature.

[0020] According to another aspect, the apparatus for mixing the third rubber compound can be arranged between the apparatus for mixing the first rubber compound and the apparatus for mixing the second rubber compound.

[0021] This arrangement allows the rubber to be compounded by a series of compounding units. Specifically, the rubber is first compounded by a unit for compounding a first rubber compound, then by a unit for compounding a third rubber compound, and finally by a unit for compounding a second rubber compound.

[0022] According to a preferred aspect, the apparatus for mixing the second rubber compound can be an apparatus for mixing the final rubber compound.

[0023] In one example, the apparatus for mixing the third rubber compound could be an intermediate mixer.

[0024] According to the third aspect, the apparatus for mixing the first, second, or third rubber mixture may include at least one rotating screw housed inside a chamber.

[0025] According to another aspect, the apparatus may further include means for feeding additional components into a chamber of a device for mixing a first rubber compound.

[0026] According to another aspect, the apparatus may further include means for feeding additional components into a chamber of a device for mixing a second rubber compound.

[0027] For example, the apparatus for feeding additional components into the chamber of a device used for mixing a first or second rubber compound can be a powder or chemical metering system.

[0028] According to another aspect, the apparatus for mixing a third rubber compound may further include means for feeding premixed rubber into the chamber of the apparatus for mixing the third rubber compound.

[0029] According to another aspect, the premixed rubber may have a temperature equal to or lower than the first temperature of the first rubber mixture.

[0030] According to another aspect, the apparatus may further include means for feeding cooling fluid into a chamber of a device for mixing a third rubber compound.

[0031] According to another aspect, the cooling fluid may have a temperature equal to or lower than the first temperature of the first rubber mixture.

[0032] According to another aspect, the equipment may further include means for feeding additional components into a device for mixing a third rubber compound.

[0033] For example, the apparatus for feeding additional components into the chamber of a device for compounding a third rubber mixture can be a powder or chemical metering system.

[0034] According to another aspect, the means for feeding additional components into the chamber of the apparatus for mixing a second rubber compound can be adapted to feed one or more curing systems into the chamber of the apparatus for mixing a second rubber compound when the temperature of the second rubber compound is below a predetermined value.

[0035] For example, the predefined value could be 130°C, preferably 120°C.

[0036] When the temperature of the rubber mixture is below a predefined value, it is advantageous to feed one or more curing systems into the chamber of the apparatus used for mixing the rubber mixture. Dispersing the curing system or curing chemicals when the temperature of the rubber mixture is below a predefined value (e.g., below 130°C, or preferably below 120°C) prevents the curing reaction from initiating during mixing. Therefore, a homogeneous final mixture can be obtained.

[0037] According to another aspect, the apparatus for feeding additional components into the chamber of the apparatus for mixing a third rubber compound can be adapted to feed one or more curing systems into the chamber of the apparatus for mixing a third rubber compound when the temperature of the third rubber compound is below a predetermined value.

[0038] According to another aspect, the means for feeding additional components into the chamber of the apparatus for mixing a second (e.g., final) rubber compound can be adapted to feed sulfur, peroxide, or another reactive crosslinking material into the chamber of the apparatus for mixing the second (e.g., final) rubber compound when the temperature of the second (e.g., final) rubber compound is below a predefined value.

[0039] In one example, the predefined value could be 130°C, preferably 120°C.

[0040] The curing system or curing chemicals are dispersed and cured when the rubber mixture is below a predefined value (e.g., below 130°C, or preferably below 120°C) to prevent the curing reaction from starting during mixing. This results in a homogeneous final mixture.

[0041] For example, in the case of feeding additional components (e.g., additives) along with cooling fluid and premixed rubber into the chamber of an apparatus for mixing rubber compounds, a crosslinking agent such as sulfur can be added to prevent scorching whenever the temperature of the mixture is about to drop below 140°C, and preferably below 130°C. Thus, mixing time and dispersion can be optimized.

[0042] According to another aspect, the device for feeding additional components can be adapted to feed one or more curing systems into the chamber of the device for mixing a second rubber mixture when the temperature of the first or third rubber mixture is below a predefined value.

[0043] In one example, the predefined value could be 130°C, but 120°C is preferred.

[0044] According to another option, the cooling fluid may further include at least one of liquid nitrogen, liquid carbon dioxide, or water.

[0045] According to another aspect, the device may further include means for applying a vacuum to the chamber of the apparatus for mixing the second rubber compound.

[0046] By applying a vacuum to the chamber of the apparatus used to mix the second rubber compound, excess volatiles (e.g., gases produced by the evaporation of the cooling fluid, or gases produced as reaction byproducts) generated during cooling and / or during any reaction in the mixer can be reduced. Reducing or removing excess volatiles is beneficial because it lowers the porosity level of the produced rubber compound.

[0047] According to another aspect, the means for applying a vacuum to the chamber of the apparatus for mixing the second rubber compound can be adapted to apply a vacuum to the chamber of the apparatus for mixing the second rubber compound after the cooling fluid is fed into the chamber of the apparatus for mixing the second rubber compound.

[0048] By applying a vacuum to the chamber of the apparatus used to mix the second rubber compound, the gas generated by the evaporation of the cooling fluid can be reduced. Reducing or removing the generated gas is beneficial because it lowers the porosity level of the produced rubber compound.

[0049] According to another aspect, the device may further include means for applying a vacuum to the chamber of the apparatus for mixing a third rubber compound.

[0050] According to another aspect, the device for applying a vacuum to the chamber of the apparatus for mixing a third rubber compound can be adapted to apply a vacuum to the chamber of the apparatus for mixing a third rubber compound after the cooling fluid is fed into the chamber of the apparatus for mixing a third rubber compound.

[0051] According to another aspect, the means for feeding cooling fluid into the chamber of the apparatus for mixing a second or third rubber compound can be adapted to spray cooling fluid into the chamber of the apparatus for mixing a second or third rubber compound.

[0052] Cooling fluid is sprayed into the chamber of the apparatus used for mixing rubber compounds, allowing the surface of the rubber compound to be uniformly and rapidly cooled during the mixing process.

[0053] Furthermore, the combination of feeding cold premixed rubber with feeding cooling fluid by spraying cooling fluid into the mixing chamber further accelerates the cooling of the processed rubber mixture.

[0054] According to another aspect, the apparatus for mixing the first, second, or third rubber mixture may include one of a Banbury mixer, a two-roll mill, or a twin-screw extrusion mixer. For example, the Banbury mixer may be a tangential mixer or a meshing mixer.

[0055] According to another aspect, the volume of the chamber of the apparatus for mixing the second rubber compound may be larger than the volume of the chamber of the apparatus for mixing the first or third rubber compound.

[0056] According to another aspect, the volume of the chamber of the apparatus for mixing the second rubber compound may be at least 5% larger than the volume of the chamber of the apparatus for mixing the previous (e.g., the first or third) rubber compound.

[0057] According to another aspect, the volume of the chamber of the apparatus for mixing the second rubber compound may be 20% to 75% larger than the volume of the chamber of the apparatus for mixing the previous (e.g., the first or third) rubber compound.

[0058] According to another aspect, the volume of the chamber of the apparatus for mixing the third rubber compound may be larger than the volume of the chamber of the apparatus for mixing the previous (e.g., the first) rubber compound.

[0059] According to another aspect, the volume of the chamber of the apparatus for mixing the third rubber compound may be at least 5% larger than the volume of the chamber of the apparatus for mixing the previous (e.g., the first) rubber compound.

[0060] According to another aspect, the volume of the chamber of the apparatus for mixing the third rubber compound may be 20% to 75% larger than the volume of the chamber of the apparatus for mixing the previous (e.g., the first) rubber compound.

[0061] According to another aspect, the present invention provides a method for mixing and processing rubber. The method includes: mixing a first rubber mixture using an apparatus for mixing a first rubber mixture, wherein the first rubber mixture has a first temperature; mixing a second rubber mixture using an apparatus for mixing a second rubber mixture, wherein the second rubber mixture has a second temperature. Mixing the second rubber mixture includes: receiving at least one of a first rubber mixture or a third rubber mixture using an apparatus for mixing the second rubber mixture, wherein the third rubber mixture is based on the first rubber mixture; feeding a premixed rubber into a chamber of the apparatus for mixing the second rubber mixture, wherein the premixed rubber has a temperature equal to or lower than the first temperature of the first rubber mixture; and feeding a cooling fluid into a chamber of the apparatus for mixing the second rubber mixture, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber mixture. Attached Figure Description

[0062] Figure 1 A schematic side view of an exemplary apparatus for mixing and processing rubber according to the prior art is shown.

[0063] Figure 2 A schematic side view of an exemplary apparatus for mixing and processing rubber according to an embodiment of the present disclosure is shown.

[0064] Figure 3 A schematic side view of an exemplary apparatus for mixing and processing rubber according to an embodiment of the present disclosure is shown.

[0065] Figure 4 A flowchart illustrating a method for mixing and processing rubber according to an embodiment of the present disclosure is shown.

[0066] Figure 5 A flowchart illustrating a method for mixing and processing rubber according to an embodiment of the present disclosure is shown. Detailed Implementation

[0067] This disclosure provides apparatus and methods for mixing and processing rubber. The apparatus and methods according to this disclosure offer numerous advantages. When rubber cooling is required during mixing, the invention allows for improved rubber mixing processes. This disclosure provides multiple (e.g., at least two) mixers connected in series, wherein the apparatus includes means for feeding premixed rubber (e.g., a side rubber feeder) and means for feeding cooling fluid into the mixing chamber to achieve rapid temperature changes in the processed rubber mixture.

[0068] Figure 1 A schematic side view of an exemplary apparatus 100 for mixing and processing rubber according to the prior art is shown.

[0069] In well-known rubber mixing systems, a single rubber mixer 110 is typically used (e.g., such as...). Figure 1 The illustrated single internal mixer is used for rubber processing. However, due to the difficulty in controlling temperature changes during the mixing process, a single rubber mixer cannot perform all mixing steps at once.

[0070] like Figure 1 As illustrated, a single rubber mixing mill (e.g., an apparatus for mixing rubber compounds) can be an internal mixer that includes at least one rotating screw 111 housed within a chamber. Figure 1 In this process, a single rubber mixing mill 110 is fed with rubber or rubber components 140, along with additional pigments and / or fillers.

[0071] After the first mixing step, the rubber mixture is transferred to a sheeting mill 120 and then to a cooling line or cooling tunnel 130 (batch cooling device) to cool the rubber mixture. After the first mixing and cooling steps, the rubber mixture is reintroduced into a single rubber mixer 110 and the process is repeated. Typically, more than one mixing step (e.g., N mixing steps) is required to complete the final product.

[0072] Therefore, new equipment and methods are needed to provide a more efficient and accelerated mixing process for producing final rubber batches.

[0073] Figure 2 A schematic side view of an exemplary apparatus for mixing and processing rubber according to an embodiment of the present disclosure is shown.

[0074] exist Figure 2In the illustrated embodiment, apparatus 200 includes means 230 for mixing a first rubber mixture, wherein the first rubber mixture has a first temperature; and means 240 for mixing a second rubber mixture, wherein the second rubber mixture has a second temperature. The means 240 for mixing the second rubber mixture further includes means for receiving the first rubber mixture; means for feeding premixed rubber 250 into the chamber of the means 240 for mixing the second rubber mixture, wherein the premixed rubber 250 has a temperature equal to or lower than the first temperature of the first rubber mixture; and means for feeding cooling fluid 260 into the chamber of the means 240 for mixing the second rubber mixture, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber mixture. Preferably, the premixed rubber has a rubber composition similar to that of the first and / or second rubber mixtures. Preferably, the premixed rubber has a substantially the same rubber composition as the first and / or second rubber mixtures.

[0075] Mixing equipment that includes more than one device for mixing rubber compounds (e.g., device 230 for mixing a first rubber compound and device 240 for mixing a second rubber compound) improves the efficiency of the rubber mixing process.

[0076] exist Figure 2 In one embodiment, the first rubber mixture processed by apparatus 230 for mixing a first rubber mixture is transferred to apparatus 240 for mixing a second rubber mixture. Specifically, apparatus 240 for mixing the second rubber mixture may include means for feeding premixed rubber 250 and means for feeding cooling fluid 260 into a chamber of apparatus 240 for mixing the second rubber mixture. Thus, premixed rubber 250 (typically a cold rubber mixture, and therefore also referred to herein as “cold rubber 250”) and / or cooling fluid 260 (e.g., water) may be added to the rubber (or the chamber of the apparatus for mixing the second rubber mixture) prior to rubber mixing, allowing the rubber batch to be cooled to a desired temperature level. In particular, at least two apparatuses for mixing rubber mixtures (e.g., internal mixers) are connected in series, with means provided for feeding premixed rubber 250 and / or cooling fluid 260, allowing for the avoidance of separate rubber cooling (e.g., in a cooling tunnel) after each mixing step.

[0077] The combination of cold premixed rubber feed and cooling fluid further accelerates the cooling of the rubber compound to the desired temperature. In this way, the capacity of the mixing system increases, and the total energy required for mixing the rubber is reduced. In particular, no unnecessary heat is dissipated during the various cooling steps, thus providing a more efficient and sustainable process.

[0078] exist Figure 2In another exemplary embodiment illustrated herein, rubber or rubber component 140 may be fed into apparatus 230 for mixing a first rubber mixture. Optionally, additional pigments and / or fillers may be fed into apparatus 230 for mixing the first rubber mixture, or apparatus 240 for mixing a second rubber mixture.

[0079] In an optional implementation scheme and as follows Figure 2 As illustrated, the apparatus may further include a tablet press 120 and / or a cooling line 130. In this exemplary embodiment, the rubber mixture is transferred from the apparatus for compounding a second rubber mixture to the tablet press 120, and then to the cooling line 130 (batch cooling device) for further cooling of the rubber mixture. In the cooling line, heat is dissipated at low temperatures, for example, by water cooling and air cooling.

[0080] In another embodiment, a filtration process can be added whenever a gear pump is added to the final mixer discharge configuration. This can further improve dispersion and prevent the presence of undispersed materials in the mixture and / or reduce the compound viscosity to a desired level.

[0081] Figure 3 A schematic side view of an exemplary apparatus for mixing and processing rubber according to an embodiment of the present disclosure is shown.

[0082] exist Figure 3 In the illustrated implementation, device 300 includes (similar to) Figure 2 The apparatus 230 is for mixing a first rubber mixture, wherein the first rubber mixture has a first temperature; and the apparatus 240 is for mixing a second rubber mixture, wherein the second rubber mixture has a second temperature. The apparatus 240 for mixing the second rubber mixture further includes means for receiving a third rubber mixture, wherein the third rubber mixture is based on the first rubber mixture; means for feeding premixed rubber 250 into the chamber of the apparatus 240 for mixing the second rubber mixture, wherein the premixed rubber 250 has a temperature equal to or lower than the first temperature of the first rubber mixture; and means for feeding cooling fluid 260 into the chamber of the apparatus 240 for mixing the second rubber mixture, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber mixture.

[0083] exist Figure 3 In one embodiment, the apparatus 300 may further include a device 340 for mixing a third rubber mixture, wherein the third rubber mixture may have a third temperature, and wherein the device 340 for mixing the third rubber mixture may be arranged between the device 230 for mixing the first rubber mixture and the device 240 for mixing the second rubber mixture.

[0084] exist Figure 3 In one embodiment, the apparatus 340 for mixing the third rubber mixture may further include means for receiving the first rubber mixture.

[0085] In another implementation scheme ( Figure 3 (Not shown in the image) The apparatus 340 for mixing the third rubber compound may be arranged after the apparatus 240 for mixing the second rubber compound.

[0086] In one embodiment, cooling fluid and premixed rubber may be added together to an apparatus for mixing a first, second, or third rubber mixture.

[0087] In another embodiment, cooling fluid and premixed rubber can be added directly and sequentially to the apparatus used for mixing the first, second, or third rubber mixture.

[0088] In one embodiment, the apparatus 340 for mixing the third rubber compound is arranged between the apparatus 230 for mixing the first rubber compound and the apparatus 240 for mixing the second rubber compound. This allows the rubber to be mixed by a series of mixing apparatuses. Specifically, the rubber is first mixed by the apparatus 230 for mixing the first rubber compound, then by the apparatus 340 for mixing the third rubber compound, and finally by the apparatus 240 for mixing the second rubber compound. Specifically, the apparatus 240 for mixing the second rubber compound is arranged downstream of the apparatus 340 for mixing the third rubber compound, and / or the apparatus 340 for mixing the third rubber compound is arranged downstream of the apparatus 230 for mixing the first rubber compound.

[0089] In one exemplary embodiment, the apparatus 340 for mixing a third rubber compound may be an intermediate mixer.

[0090] In one exemplary embodiment, the apparatus for compounding a third rubber compound may be adapted to complete a silica silane reaction, wherein the rubber compound is ultimately processed by the apparatus for compounding a second rubber compound.

[0091] exist Figure 3 In an exemplary embodiment, the device 300 may be adapted to perform reactive compounding (e.g., phenolic resin polycondensation) during the compounding of a third rubber compound.

[0092] For example, when premixed rubber 250 is fed into the chamber of apparatus 340 for mixing a third rubber compound, the premixed rubber may have a temperature below 120°C, and preferably below 100°C. Therefore, the rubber compound can be mixed at a desired temperature where a chemical reaction can occur.

[0093] exist Figure 2 or Figure 3 In an exemplary embodiment, the apparatus 230 / 250 / 340 for mixing the first, second, or third rubber mixture can be an internal mixer.

[0094] exist Figure 2 or Figure 3 In another embodiment, the device 230 / 250 / 340 for mixing the first, second, or third rubber mixture may include at least one rotating screw 111 housed inside the chamber.

[0095] In another implementation scheme ( Figure 3 As illustrated in the illustration, the apparatus 340 for mixing a third rubber compound may further include means for feeding premixed rubber 250 into the chamber of the apparatus 340 for mixing the third rubber compound, wherein the premixed rubber 250 may have a temperature equal to or lower than a first temperature of the first rubber compound.

[0096] In another implementation scheme ( Figure 3 As illustrated in the illustration, the apparatus 340 for mixing a third rubber compound may further include means for feeding cooling fluid 260 into a chamber of the apparatus 340 for mixing the third rubber compound, wherein the cooling fluid 260 may have a temperature equal to or lower than a first temperature of the first rubber compound.

[0097] For example, the first rubber mixture may have a temperature above 140°C. In order to achieve a temperature below 120°C in the final mixer, a cold premixed rubber (e.g., with a room temperature of 25°C) may be added to achieve rapid quenching of the rubber mixture at a high temperature.

[0098] In an exemplary example and considering that a similar rubber material with a comparable specific heat will be used in the process, it is assumed that the added cold premixed rubber should follow the following rule: the mass of the added cold premixed rubber (temperature ≈ 25°C) should be equal to or greater than 4 / 15 of the mass of the material added to the masterbatch (temperature ≥ 140°C), preferably greater than 1 / 3.

[0099] In one exemplary embodiment, the apparatus for feeding the premixed rubber 250 may be a rubber metering system.

[0100] In one exemplary embodiment, the rubber metering system may include a sheet loader, a metering system for abrasive materials, or an extruder.

[0101] In one exemplary embodiment, the apparatus for feeding premixed rubber 250 may be adapted to feed a cold rubber mixture or a preheated rubber mixture into the chamber of a corresponding mixer.

[0102] In one exemplary embodiment, the premixed rubber 250 may be premixed in another internal mixer or fed from a rubber buffer conveyor to rapidly adjust the rubber temperature to the desired level.

[0103] In another embodiment, the apparatus 240 for mixing the second rubber mixture may be an apparatus for mixing the final rubber mixture.

[0104] In another implementation scheme ( Figure 2 or Figure 3 (not shown in the image), the equipment 200 / 300 may further include means for feeding additional components into the chamber of the device 230 for mixing the first, second or third rubber mixture.

[0105] In another embodiment, the device for feeding additional components into the chambers of the apparatus 230 / 240 / 340 for mixing the first, second, or third rubber mixtures can be a powder or chemical metering system.

[0106] In another embodiment, the means for feeding additional components into the chamber of the apparatus for mixing the second rubber compound may be adapted to feed one or more curing systems into the chamber of the apparatus 240 for mixing the second rubber compound when the temperature of the second rubber compound is below a predefined value.

[0107] In one exemplary embodiment, the predefined value may be 130°C, and preferably 120°C.

[0108] When the temperature of the rubber mixture is below a predefined value, it is advantageous to feed one or more curing systems into the chamber of the apparatus used to mix the rubber mixture. Dispersing the curing system or curing chemicals when the rubber mixture is below a predefined value (e.g., below 130°C, or preferably below 120°C) prevents the curing reaction from initiating during mixing. Therefore, a homogeneous final mixture can be obtained.

[0109] In one exemplary embodiment, the temperature of the premixed rubber 250 fed into the chamber of the apparatus 240 for mixing the second rubber compound, or the temperature of the cooling fluid 260, is below 120°C, preferably below 100°C. This allows the (second) temperature of the (second) rubber compound mixed by the apparatus 250 for mixing the second rubber compound to rapidly decrease to below 130°C, preferably below 120°C.

[0110] In another exemplary embodiment, the curing chemicals are processed in the last mixer of the series, and the premixed rubber 250 and / or cooling fluid 260 are added at a temperature below 100°C (e.g., for both rubber and water), such that the rubber temperature of the blend will rapidly decrease to below 130°C, and preferably below 120°C. In the case of cooling fluids such as liquid nitrogen or liquid carbon dioxide, the temperature should be below -190°C and -80°C, respectively.

[0111] In another embodiment, the means for feeding additional components into the chamber of the apparatus for mixing a third rubber compound may be adapted to feed one or more curing systems into the chamber of the apparatus for mixing a third rubber compound when the temperature of the third rubber compound is below a predefined value.

[0112] In another embodiment, the means for feeding additional components into the chamber of the apparatus 240 for compounding a second (e.g., final) rubber compound may be adapted to feed sulfur, peroxide, or another reactive crosslinking material into the chamber of the apparatus 240 for compounding a second (or final) rubber compound when the temperature of the second (or final) rubber compound is below a predefined value.

[0113] In one exemplary embodiment, the predefined value may be 130°C, and preferably 120°C.

[0114] When the rubber mixture is below a predefined value (e.g., below 130°C, or preferably below 120°C), the curing system or curing chemicals are dispersed to prevent the curing reaction from starting during mixing.

[0115] In one exemplary embodiment, additional components (e.g., additives) are fed together with cooling fluid and premixed rubber into a chamber of an apparatus for compounding rubber mixtures (e.g., an apparatus for compounding a first or second rubber mixture). A crosslinking agent, such as sulfur, may be added to prevent scorching whenever the temperature of the mixture is about to drop below 140°C, and preferably below 130°C. This process allows for optimization of compounding time and dispersion.

[0116] According to another embodiment, the device for feeding additional components may be adapted to feed one or more curing systems into the chamber of the device 240 for mixing a second rubber mixture when the temperature of the previously mixed rubber mixture (e.g., the first or third rubber mixture) is below a predefined value.

[0117] In one example, the predefined value could be 130°C, but 120°C is preferred.

[0118] In another implementation (e.g., Figure 2 or Figure 3(As illustrated in the example), the cooling fluid 260 may further include at least one of liquid nitrogen, liquid carbon dioxide, or water.

[0119] In another implementation scheme ( Figure 2 or Figure 3 (not shown in the image), the device may further include means for applying a vacuum to a chamber of a apparatus for mixing a second or third rubber compound.

[0120] For example, a vacuum is achieved when the pressure in the chamber of the apparatus used for mixing the second or third rubber compound is lower than the ambient pressure of the mixing equipment. For example, the pressure in the chamber of the apparatus used for mixing the second or third rubber compound may be reduced by 0.05 bar, preferably 0.1 bar, relative to the ambient pressure.

[0121] By applying a vacuum to the chambers of the apparatus used to mix the second or third rubber compound, excess volatiles (e.g., gases produced by the evaporation of cooling fluids, or gases produced as reaction byproducts) generated during cooling and / or any reaction in the mixer can be reduced. Reducing or removing excess volatiles is beneficial because it lowers the porosity level of the produced rubber compound.

[0122] In another implementation scheme ( Figure 2 or Figure 3 (Not shown in the image) A device for applying a vacuum to a chamber of an apparatus for mixing a second or third rubber compound may be adapted to apply a vacuum to a chamber of an apparatus for mixing a second or third rubber compound after a cooling fluid is fed into the chamber of the apparatus for mixing the respective rubber compound.

[0123] By applying a vacuum to the chamber of the apparatus used to mix the second or third rubber compound, the gases generated by the evaporation of the cooling fluid can be reduced. Reducing or removing the generated gases is beneficial because it lowers the porosity level of the produced rubber compound.

[0124] In another implementation scheme ( Figure 2 or Figure 3 (Not shown in the image) The device for feeding cooling fluid 260 into the chamber of the apparatus 240 / 340 for mixing a second or third rubber compound can be adapted to spray cooling fluid 260 into the chamber of the apparatus 240 / 340 for mixing a second or third rubber compound.

[0125] Cooling fluid is sprayed into the chamber of the apparatus used for mixing rubber compounds, allowing the surface of the rubber compound to be uniformly and rapidly cooled during the mixing process.

[0126] Furthermore, the combination of feeding cold premixed rubber with feeding cooling fluid by spraying cooling fluid into the chamber further accelerates the cooling of the processed rubber mixture.

[0127] According to another embodiment, the apparatus 230 / 240 / 340 for mixing the first, second, or third rubber mixture may include one of a mixer, a two-roll mill, or a twin-screw extrusion mixer. For example, the mixer may be a tangential mixer or a meshing mixer.

[0128] In another embodiment, the last mixer in the series (e.g., Figure 3 The mixer 240 illustrated herein should have the same characteristics as a previous mixer (e.g., Figure 3 The mixing volume is at least 5% larger than that of the mixer 340 shown in the example, and preferably 20% to 75% larger than that of the previous mixer.

[0129] In another implementation scheme ( Figure 2 As illustrated in the illustration, the volume of the chamber of the apparatus 240 for mixing the second rubber mixture may be larger than the volume of the chamber of the apparatus 230 for mixing the first rubber mixture.

[0130] In another implementation scheme ( Figure 2 (As illustrated in the example), the volume of the chamber of the apparatus for mixing the second rubber compound may be at least 5% larger than the volume of the chamber of the apparatus for mixing the first rubber compound.

[0131] In another implementation scheme ( Figure 2 (As illustrated in the example), the volume of the chamber of the apparatus for mixing the second rubber compound may be 20% to 75% larger than the volume of the chamber of the apparatus for mixing the first rubber compound.

[0132] In another implementation scheme ( Figure 3 (Not illustrated) The volume of the chamber of the apparatus 340 for mixing the third rubber mixture may be larger than the volume of the chamber of the apparatus for mixing the first rubber mixture.

[0133] In another implementation scheme ( Figure 3 (Not illustrated) The volume of the chamber of the apparatus for mixing the third rubber compound may be at least 5% larger than the volume of the chamber of the apparatus for mixing the first rubber compound.

[0134] In another implementation scheme ( Figure 3 (Not illustrated) The volume of the chamber of the apparatus for mixing the third rubber compound may be 20% to 75% larger than the volume of the chamber of the apparatus for mixing the first rubber compound.

[0135] In another implementation scheme ( Figure 3 (As illustrated in the example), the volume of the chamber of the apparatus 240 for mixing the second rubber compound may be larger than the volume of the chamber of the apparatus 340 for mixing the third rubber compound.

[0136] In another implementation scheme ( Figure 3 (As illustrated in the example), the volume of the chamber of the apparatus 240 for mixing the second rubber compound may be at least 5% larger than the volume of the chamber of the apparatus 340 for mixing the third rubber compound.

[0137] The following provides an example of an apparatus comprising a series of three mixing mills (e.g., an apparatus for mixing first, second, and third rubber mixtures).

[0138] In this example, rubber filler and pigment can be added to the first (internal) mixing mill (e.g.) Figure 2 and Figure 3 (As illustrated). After mixing the rubber compound in a first mixer, the first mixer can discharge the rubber compound into an intermediate mixer. The intermediate mixer can be a reactive mixer in which a chemical reaction can occur. However, a reactive mixer is only an optional choice and is not mandatory in the corresponding series of mixers. Preferably, the volume of the intermediate mixer should be 5% larger than the volume of the first mixer. After further mixing the rubber compound, the intermediate mixer discharges the rubber compound into a final mixer. The volume of the final mixer should be at least 5% larger than the volume of the previous mixers, and preferably 20% to 75% larger than the volume of the previous mixers.

[0139] In another implementation, such as Figure 2 As illustrated, the series of mixing mills may consist of only a series of two mixing mills (e.g., a first mixing mill and a final mixing mill).

[0140] In another implementation scheme ( Figure 2 or Figure 3 (Not illustrated in the original text), the apparatus of the present invention may include a series of N mixers (e.g., apparatus for mixing rubber compounds), wherein N may be 10, preferably wherein N may be 5. Each mixer may be identified as mixer "i", wherein "i" may vary from 1 to N. The volume of mixer "i+1" should preferably be 5% larger than the volume of the previous mixer "i".

[0141] In addition, whenever a lower mixing temperature is required in mixer "i", cooling fluid for rapid cooling can be fed into the first mixer or mixer "i-1".

[0142] In addition, a vacuum may be required during mixing to remove excess volatiles generated during cooling and / or during any reactions in the mixing machine in previous steps.

[0143] Figure 4 and Figure 5 A flowchart illustrating a method for mixing and processing rubber according to an embodiment of the present disclosure is provided.

[0144] According to one embodiment, the present invention provides a method 400 for compounding and processing rubber. The method 400 includes: compounding a first rubber mixture 410 by an apparatus for compounding a first rubber mixture, wherein the first rubber mixture has a first temperature; and compounding a second rubber mixture 420 by an apparatus for compounding a second rubber mixture, wherein the second rubber mixture has a second temperature. Compounding the second rubber mixture 420 includes: receiving 421 at least one of the first rubber mixture or a third rubber mixture by an apparatus for compounding the second rubber mixture, wherein the third rubber mixture is based on the first rubber mixture; feeding a premixed rubber feed 422 into a chamber of the apparatus for compounding the second rubber mixture, wherein the premixed rubber has a temperature equal to or lower than the first temperature of the first rubber mixture; and feeding a cooling fluid 423 into a chamber of the apparatus for compounding the second rubber mixture, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber mixture.

[0145] In another implementation (such as) Figure 4 As illustrated in the example), method 400 may further include mixing 430 of the third rubber mixture with an apparatus for mixing the third rubber mixture, wherein the third rubber mixture has a third temperature.

[0146] In another embodiment, the compound 430 third rubber compound may further include

[0147] The first rubber mixture is received by a device for mixing the third rubber mixture.

[0148] In another embodiment, the compound 430 third rubber compound may further include

[0149] The premixed rubber is fed into the chamber of an apparatus for mixing a third rubber compound, wherein the premixed rubber may have a temperature equal to or lower than the first temperature of the first rubber compound.

[0150] In another embodiment, the third rubber compound 430 may further include feeding a cooling fluid into a chamber of the apparatus for compounding the third rubber compound, wherein the cooling fluid may have a temperature equal to or lower than a first temperature of the first rubber compound.

[0151] The following section provides an example of a method with a series of three mixing steps.

[0152] In this example, rubber filler and pigment can be added to the first (internal) mixing mill (e.g.) Figure 2 and Figure 3 (As illustrated). After the mixing process in the first mixer, the first mixer can discharge the first rubber mixture into the intermediate mixer (the intermediate mixer corresponds to...). Figure 3(An apparatus for mixing a third rubber compound). For example, an intermediate mixer can be a reactive mixer in which a chemical reaction can occur. However, a reactive mixer is optional and not mandatory in a series of mixers. After further mixing the rubber compound, the intermediate mixer can discharge the rubber compound into the final mixer (the final mixer corresponds to...). Figure 3 (A device for mixing a second rubber compound).

[0153] In another embodiment, the method may further include feeding additional components into a chamber of an apparatus for mixing a first, second, or third rubber compound.

[0154] In another embodiment, feeding additional components into the chamber of the apparatus for mixing the second or third rubber mixture may further include feeding one or more curing systems into the chamber of the apparatus for mixing the second or third rubber mixture when the temperature of the second or third rubber mixture is below a predefined value.

[0155] In another example, feeding additional components into the chamber of the apparatus for compounding a second (e.g., final) rubber compound may include feeding sulfur, peroxide, or another reactive crosslinking material into the chamber of the apparatus for compounding a second (e.g., final) rubber compound when the temperature of the second (e.g., final) rubber compound is below a predefined value.

[0156] In another embodiment, the feed additive may include feeding one or more curing systems into a chamber of a device for mixing a second rubber mixture when the temperature of the first or third rubber mixture is below a predefined value.

[0157] In another embodiment, the method may further include applying a vacuum to the chamber of the apparatus for mixing the second or third rubber compound (e.g., after feeding cooling fluid into the chamber of the apparatus for mixing the second or third rubber compound).

[0158] In another embodiment, feeding cooling fluid 423 into the chamber of the apparatus for mixing the second or third rubber compound may further include spraying the cooling fluid into the chamber of the apparatus for mixing the second or third rubber compound.

[0159] Therefore, some aspects of this disclosure may be specified by the following provisions:

[0160] Clause 1. An apparatus for mixing and processing rubber, said apparatus comprising:

[0161] Apparatus for mixing a first rubber compound, wherein the first rubber compound has a first temperature; and

[0162] Apparatus for mixing a second rubber compound, wherein the second rubber compound has a second temperature;

[0163] The apparatus for mixing the second rubber mixture further includes:

[0164] A means for receiving at least one of the first rubber mixture or the third rubber mixture, wherein the third rubber mixture is based on the first rubber mixture;

[0165] A device for feeding premixed rubber into a chamber of the apparatus for mixing the second rubber mixture, wherein the premixed rubber has a temperature equal to or lower than the first temperature of the first rubber mixture;

[0166] A means for feeding cooling fluid into a chamber of the apparatus for mixing the second rubber compound, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber compound.

[0167] Clause 2. The apparatus according to Clause 1, wherein the apparatus further comprises means for mixing the third rubber compound, wherein the third rubber compound has a third temperature;

[0168] Preferably, the apparatus for mixing the third rubber mixture can be arranged between the apparatus for mixing the first rubber mixture and the apparatus for mixing the second rubber mixture.

[0169] More preferably, the apparatus for mixing the second rubber mixture is an apparatus for mixing the final rubber mixture.

[0170] Clause 3. The equipment according to any one of the preceding clauses, wherein the means for mixing the first or second rubber mixture comprises at least one rotating screw housed within a chamber; or

[0171] The apparatus according to Clause 2 or 3, wherein the means for mixing the third rubber compound includes at least one rotating screw housed inside a chamber.

[0172] Clause 4. The device according to any one of the preceding clauses, wherein the device further comprises at least one of the following:

[0173] A means for feeding additional components into the chamber of the apparatus for mixing the first rubber mixture;

[0174] A means for feeding additional components into the chamber of the apparatus used for mixing the second rubber compound.

[0175] Clause 5. The apparatus according to any one of Clauses 2 to 4 above, wherein the device for mixing the third rubber compound further comprises at least one of the following:

[0176] A means for feeding premixed rubber into the chamber of the apparatus for mixing the third rubber mixture;

[0177] A means for feeding cooling fluid into the chamber of the apparatus used for mixing the third rubber compound;

[0178] A means for feeding additional components into the apparatus for mixing the third rubber compound.

[0179] Clause 6. The apparatus according to any one of Clauses 4 or 5, wherein the means for feeding additional components into the chamber of the apparatus for mixing the second rubber mixture is adapted to feed a cured system into the chamber of the apparatus for mixing the second rubber mixture when the temperature of the second rubber mixture is below a predetermined value; or

[0180] The means for feeding additional components into the chamber of the apparatus for mixing the third rubber compound is adapted to feed a cured system into the chamber of the apparatus for mixing the third rubber compound when the temperature of the third rubber compound is below a predetermined value; or

[0181] The means for feeding additional components into the chamber of the apparatus for mixing the second rubber mixture is adapted to feed sulfur, peroxide, or another reactive crosslinking material into the chamber of the apparatus for mixing the second rubber mixture when the temperature of the second rubber mixture is below a predetermined value.

[0182] Clause 7. The apparatus according to any one of the preceding clauses, wherein the means for feeding additional components is adapted to feed the cured system into the chamber of the means for mixing the second rubber mixture when the first or third temperature of the first or third rubber mixture is below a predefined value.

[0183] Clause 8. The device according to any one of the preceding clauses, wherein the cooling fluid further comprises at least one of liquid nitrogen, liquid carbon dioxide or water.

[0184] Clause 9. The apparatus according to any one of the preceding clauses, wherein the apparatus further comprises means for applying a vacuum to the chamber of the device for mixing the second rubber compound;

[0185] Preferably, the means for applying a vacuum to the chamber of the apparatus for mixing the second rubber compound is adapted to apply a vacuum to the chamber of the apparatus for mixing the second rubber compound after the cooling fluid is fed into the chamber of the apparatus for mixing the second rubber compound.

[0186] Clause 10. The apparatus according to any one of Clauses 5 to 9, wherein the apparatus further comprises means for applying a vacuum to the chamber of the device for mixing the third rubber compound;

[0187] Preferably, the means for applying a vacuum to the chamber of the apparatus for mixing the third rubber compound is adapted to apply a vacuum to the chamber of the apparatus for mixing the third rubber compound after the cooling fluid is fed into the chamber of the apparatus for mixing the third rubber compound.

[0188] Clause 11. The apparatus according to any one of the preceding clauses, wherein the means for feeding cooling fluid into the chamber of the apparatus for mixing the second rubber compound is adapted to spray cooling fluid into the chamber of the apparatus for mixing the second rubber compound.

[0189] Clause 12. The equipment according to any one of the preceding clauses, wherein the apparatus for mixing the first or second rubber mixture comprises one of a mixer, a two-roll mill, or a twin-screw extrusion mixer; or

[0190] The equipment according to any one of Clauses 2 to 11, wherein the apparatus for mixing the third rubber compound comprises one of an internal mixer, a two-roll mill, or a twin-screw extrusion mixer.

[0191] Clause 13. The apparatus according to any one of the preceding clauses, wherein the volume of the chamber of the device for mixing the second rubber mixture is greater than the volume of the chamber of the device for mixing the first or the rubber mixture;

[0192] Preferably, the volume of the chamber of the apparatus for mixing the second rubber mixture is at least 5% larger than the volume of the chamber of the apparatus for mixing the first or third rubber mixture;

[0193] More preferably, the volume of the chamber of the device for mixing the second rubber mixture is 20% to 75% larger than the volume of the chamber of the device for mixing the first or third rubber mixture.

[0194] Clause 14. The apparatus according to any one of Clauses 2 to 12 above, wherein the volume of the chamber of the device for mixing the third rubber mixture is greater than the volume of the chamber of the device for mixing the first rubber mixture;

[0195] Preferably, the volume of the chamber of the apparatus for mixing the third rubber mixture is at least 5% larger than the volume of the chamber of the apparatus for mixing the first rubber mixture;

[0196] More preferably, the volume of the chamber of the device for mixing the third rubber mixture is 20% to 75% larger than the volume of the chamber of the device for mixing the first rubber mixture.

[0197] Clause 15. A method for compounding and processing rubber, said method comprising:

[0198] The first rubber compound is compounded by an apparatus for compounding a first rubber compound, wherein the first rubber compound has a first temperature; and

[0199] The second rubber compound is compounded by an apparatus for compounding a second rubber compound, wherein the second rubber compound has a second temperature;

[0200] The second rubber mixture comprises:

[0201] The apparatus for mixing the second rubber mixture receives at least one of the first rubber mixture or the third rubber mixture, wherein the third rubber mixture is based on the first rubber mixture;

[0202] The premixed rubber is fed into the chamber of the apparatus for mixing the second rubber mixture, wherein the premixed rubber has a temperature equal to or lower than the first temperature of the first rubber mixture;

[0203] Cooling fluid is fed into the chamber of the apparatus for mixing the second rubber compound, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber compound.

[0204] The attached diagram uses a list of icon numbers.

[0205] 100 / 200 / 300 equipment

[0206] 110 Single Rubber Mixing Machine

[0207] 111 Rotary Screw

[0208] 120 tablet press

[0209] 130 cooling pipes

[0210] 140 rubber or rubber component

[0211] 230 device for mixing a first rubber mixture

[0212] 240 device for mixing a second rubber mixture

[0213] 250 premixed rubber

[0214] 260 cooling fluid

[0215] 340 device for mixing a third rubber mixture

Claims

1. An apparatus for mixing and processing rubber, the apparatus comprising: Apparatus for mixing a first rubber compound, wherein the first rubber compound has a first temperature; Apparatus for mixing a second rubber compound, wherein the second rubber compound has a second temperature; The apparatus for mixing the second rubber mixture further includes: A means for receiving at least one of the first rubber mixture or the third rubber mixture, wherein the third rubber mixture is based on the first rubber mixture; A device for feeding premixed rubber into a chamber of the apparatus for mixing the second rubber mixture, wherein the premixed rubber has a temperature equal to or lower than the first temperature of the first rubber mixture; A means for feeding cooling fluid into a chamber of the apparatus for mixing the second rubber compound, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber compound; and A device for applying a vacuum to the chamber of the apparatus used for mixing the second rubber compound.

2. The apparatus of claim 1, wherein the apparatus further comprises means for mixing the third rubber mixture, wherein the third rubber mixture has a third temperature; Preferably, the apparatus for mixing the third rubber mixture can be arranged between the apparatus for mixing the first rubber mixture and the apparatus for mixing the second rubber mixture. More preferably, the apparatus for mixing the second rubber mixture is an apparatus for mixing the final rubber mixture.

3. The apparatus according to any one of the preceding claims, wherein the means for mixing the first or second rubber mixture comprises at least one rotating screw housed within a chamber; or The apparatus of claim 2, wherein the means for mixing the third rubber compound comprises at least one rotating screw housed within a chamber.

4. The device according to any one of the preceding claims, wherein the device further comprises at least one of the following: A means for feeding additional components into the chamber of the apparatus for mixing the first rubber mixture; A means for feeding additional components into the chamber of the apparatus used for mixing the second rubber compound.

5. The apparatus according to any one of claims 2 to 4, wherein the device for mixing the third rubber compound further comprises at least one of the following: A means for feeding premixed rubber into the chamber of the apparatus for mixing the third rubber mixture; A means for feeding cooling fluid into the chamber of the apparatus used for mixing the third rubber compound; A means for feeding additional components into the apparatus for mixing the third rubber compound.

6. The apparatus according to any one of claims 4 or 5, wherein the means for feeding additional components into the chamber of the apparatus for mixing the second rubber mixture is adapted to feed a cured system into the chamber of the apparatus for mixing the second rubber mixture when the temperature of the second rubber mixture is below a predetermined value; or The device for feeding additional components into the chamber of the apparatus for mixing the third rubber compound is adapted to feed a cured system into the chamber of the apparatus for mixing the third rubber compound when the temperature of the third rubber compound is below a predetermined value. or The means for feeding additional components into the chamber of the apparatus for mixing the second rubber mixture is adapted to feed sulfur, peroxide, or another reactive crosslinking material into the chamber of the apparatus for mixing the second rubber mixture when the temperature of the second rubber mixture is below a predetermined value.

7. The apparatus according to any one of the preceding claims, wherein the means for feeding additional components is adapted to feed the curing system into the chamber of the means for mixing the second rubber mixture when the first or third temperature of the first or third rubber mixture is below a predefined value.

8. The device according to any one of the preceding claims, wherein the cooling fluid further comprises at least one of liquid nitrogen, liquid carbon dioxide, or water.

9. The device according to any one of the preceding claims, The device for applying a vacuum to the chamber of the apparatus for mixing the second rubber compound is adapted to apply a vacuum to the chamber of the apparatus for mixing the second rubber compound after the cooling fluid is fed into the chamber of the apparatus for mixing the second rubber compound.

10. The apparatus according to any one of claims 5 to 9, wherein the apparatus further comprises means for applying a vacuum to the chamber of the device for mixing the third rubber compound; Preferably, the means for applying a vacuum to the chamber of the apparatus for mixing the third rubber compound is adapted to apply a vacuum to the chamber of the apparatus for mixing the third rubber compound after the cooling fluid is fed into the chamber of the apparatus for mixing the third rubber compound.

11. The apparatus according to any one of the preceding claims, wherein the means for feeding cooling fluid into the chamber of the apparatus for mixing the second rubber mixture is adapted to spray cooling fluid into the chamber of the apparatus for mixing the second rubber mixture.

12. The apparatus according to any one of the preceding claims, wherein the means for mixing the first or second rubber mixture comprises one of a mixer, a two-roll mill, or a twin-screw extrusion mixer; or The apparatus according to any one of claims 2 to 11, wherein the device for mixing the third rubber mixture comprises one of an internal mixer, a two-roll mill, or a twin-screw extrusion mixer.

13. The apparatus according to any one of the preceding claims, wherein the volume of the chamber of the device for mixing the second rubber mixture is greater than the volume of the chamber of the device for mixing the first or the rubber mixture; Preferably, the volume of the chamber of the apparatus for mixing the second rubber mixture is at least 5% larger than the volume of the chamber of the apparatus for mixing the first or third rubber mixture; More preferably, the volume of the chamber of the device for mixing the second rubber mixture is 20% to 75% larger than the volume of the chamber of the device for mixing the first or third rubber mixture.

14. The apparatus according to any one of claims 2 to 12, wherein the volume of the chamber of the device for mixing the third rubber mixture is greater than the volume of the chamber of the device for mixing the first rubber mixture; Preferably, the volume of the chamber of the apparatus for mixing the third rubber mixture is at least 5% larger than the volume of the chamber of the apparatus for mixing the first rubber mixture; More preferably, the volume of the chamber of the device for mixing the third rubber mixture is 20% to 75% larger than the volume of the chamber of the device for mixing the first rubber mixture.

15. A method for mixing and processing rubber, the method comprising: The first rubber mixture is mixed by an apparatus for mixing a first rubber mixture, wherein the first rubber mixture has a first temperature; and The second rubber compound is compounded by an apparatus for compounding a second rubber compound, wherein the second rubber compound has a second temperature; The second rubber mixture comprises: The apparatus for mixing the second rubber mixture receives at least one of the first rubber mixture or the third rubber mixture, wherein the third rubber mixture is based on the first rubber mixture; The premixed rubber is fed into the chamber of the apparatus for mixing the second rubber mixture, wherein the premixed rubber has a temperature equal to or lower than the first temperature of the first rubber mixture; Cooling fluid is fed into the chamber of the apparatus for mixing the second rubber compound, wherein the cooling fluid has a temperature equal to or lower than the first temperature of the first rubber compound.

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