Paper-plastic-aluminum composite packaging waste recycling method and system

Abstract

The application discloses a paper-plastic-aluminum composite packaging waste recycling method and system, and the method comprises the following steps: crushing, crushing the waste aluminum plastic packaging into particles; mixing, mixing the particles with a conductive medium; heating, pulse heating the mixture; collecting, collecting the obtained solid graphene after heating, and extracting the mixed gas of aluminum vapor and carbon-hydrogen gas, the aluminum vapor is condensed into solid aluminum, and the carbon-hydrogen gas is collected and stored. Using the above-mentioned paper-plastic-aluminum composite packaging waste recycling method, the waste paper-plastic-aluminum is converted into graphene, high-purity aluminum and hydrogen-rich gas through pulse heating, realizing the resource utilization and high-value utilization of the waste paper-plastic-aluminum, and the economic benefit is remarkable. Moreover, a multi-stage recycling system is established, the waste heat and products are effectively utilized, the process energy consumption is reduced, and the product circulation is realized. In addition, the production cost of graphene is greatly reduced, and the continuous and stable preparation of graphene is realized.

Description

Technical Field

[0001] This invention relates to the field of paper-plastic-aluminum recycling technology, specifically to a method and system for recycling paper-plastic-aluminum composite packaging waste. Background Technology

[0002] Paper-plastic-aluminum composite packaging is a packaging system that uses food-grade cardboard as the base material. It is a paper packaging made of polyethylene, paper, aluminum foil, and other composite materials. Taking Tetra Pak as an example, its six-layer composite structure consists of paper cellulose (approximately 75%), polyethylene plastic (approximately 20%), and aluminum foil (approximately 5%), providing excellent barrier properties and freshness preservation. Currently, producing one ton of paper-plastic-aluminum composite packaging requires approximately 11 ten-year-old trees, 0.3 tons of petroleum, and 7.5 tons of aluminum ore. Tetra Pak consumes over 100 billion units annually, and over 80% of waste paper-plastic-aluminum packaging ends up in landfills or incinerators, with a recycling rate of less than 20%. This severely harms the environment and causes enormous waste of resources and energy.

[0003] Because polyethylene and aluminum foil in paper-plastic-aluminum composite packaging are chemically stable and form a tightly bonded multi-layered structure with paper, all three materials are difficult to degrade. Traditional direct recycling methods, such as wood-plastic composite technology, suffer from poor product quality and low recycling rates; fractional recycling, such as hydraulic pulping technology, suffers from incomplete recycling and easy damage to raw materials; while chemical separation technology is limited by the difficulty of separation and secondary pollution. In addition, traditional paper-plastic-aluminum composite packaging waste recycling technologies all share the common problem of low added value of the products. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a method and system for recycling paper-plastic-aluminum composite packaging waste, which has low recycling costs and can yield high-value-added products.

[0005] To achieve the above objectives, the present invention provides a method for recycling waste paper-plastic-aluminum composite packaging, comprising the following steps: Crushing involves breaking down waste aluminum-plastic packaging into particles. Mixing involves mixing the particles with a conductive medium. Heating, specifically pulse heating of the mixture; The solid graphene obtained after heating is collected, and a mixture of aluminum vapor and hydrocarbon gas is extracted. The aluminum vapor is condensed to obtain solid aluminum, and the hydrocarbon gas is collected and stored.

[0006] The waste aluminum-plastic packaging is crushed to process the raw materials. Since paper-plastic-aluminum has poor electrical conductivity, a conductive medium is added, followed by pulse heating to achieve material conversion. The resulting products include high-purity graphene, high-purity aluminum, and hydrogen-rich gas.

[0007] Furthermore, it also includes the following steps: Washing: Use water to wash the crushed particles to remove impurities from them. Drying involves heating and drying the cleaned particles.

[0008] Washing and drying are used to remove impurities from raw materials.

[0009] Furthermore, in the drying step: The cleaned particles are heated and dried using extracted aluminum vapor and hydrocarbon gas. During the hot air conveying process, the aluminum vapor releases latent heat and condenses upon cooling, adhering to the particle surface and acting as a conductive medium. It is heated together with the particles to form a cycle until the preset number of cycles is completed. After the cycle is completed, the aluminum vapor is condensed and the solid aluminum is recovered.

[0010] The products obtained after pulse heating include high-temperature aluminum vapor and hydrogen-rich gas, which can be used as the main heat source for drying during the recycling process, effectively utilizing preheating and reducing process energy consumption. Simultaneously, the condensed solid aluminum can be used as a conductive medium for further pulse heating of paper-plastic aluminum, forming a product cycle.

[0011] Furthermore, in the drying step: After releasing waste heat, the hydrocarbon gas is stored after passing through primary and secondary condensation. Primary condensation removes residual aluminum from the gas, and secondary condensation removes water vapor from the gas.

[0012] Two-stage condensation can recover residual aluminum and water vapor, and the condensate can be recycled for cleaning steps.

[0013] Furthermore, in the mixing step: Let the conveying rate of the conductive medium be M1 kg / h, the conveying rate of the particles be M2 kg / h, and M1:M2=K. As the number of cycles increases, the value of K is adjusted to decrease.

[0014] Since there is less aluminum adhering to the paper-plastic-aluminum material in the early stage of the cycle, the conveying rate of the conductive medium is relatively high at this time. As the number of cycles increases, the amount of aluminum increases accordingly. Therefore, by reducing the K value, the conveying rate of the conductive medium relative to the particles can be relatively reduced.

[0015] The beneficial effects of the above-mentioned method for recycling waste paper-plastic-aluminum composite packaging are as follows: By using pulse heating, waste paper-plastic-aluminum gas is converted into graphene, high-purity aluminum, and hydrogen-rich gas, achieving resource utilization and high-value utilization of waste paper-plastic-aluminum, resulting in significant economic benefits. Furthermore, a multi-stage recycling system is established, effectively utilizing waste heat and products, reducing process energy consumption, and realizing product recycling. In addition, compared to the high cost, complex process, and unstable quality of traditional graphene preparation processes, this method significantly reduces the production cost of graphene, achieving low-cost and continuous stable preparation of graphene.

[0016] A paper-plastic-aluminum composite packaging waste recycling system, used in any of the paper-plastic-aluminum composite packaging waste recycling methods described above, includes a crushing device, a washing device, a drying device, a vacuum feeding device, a process tube, a Joule device, and a collection tank connected in sequence.

[0017] The crushing device breaks down the paper-plastic-aluminum mixture into granules, followed by a cleaning device to remove impurities and dust, and a drying device to dry the granules. A vacuum feeding device mixes the granules with a conductive medium, separating the air from the mixture. The mixture is then fed into a Joule apparatus through a process tube. The Joule apparatus heats the mixture using high-voltage and high-current pulsed discharges to achieve millisecond-level temperature rise, ultimately yielding graphene, aluminum vapor, and hydrocarbon gases. A collection tank collects and stores the graphene.

[0018] Furthermore, it also includes a purification device, which is capable of purifying the water after cleaning, and its inlet and outlet are respectively connected to the outlet and inlet of the cleaning device.

[0019] The purification device is used to purify the wastewater after washing particles, so that it can be used as clean reclaimed water for further washing, thus achieving the effect of energy conservation and emission reduction.

[0020] Furthermore, it also includes an air extraction device and an air storage tank. The air extraction end of the air extraction device is connected to the Joule device, and the air outlet end is connected to the drying device. The air storage tank is connected to the drying device.

[0021] The extraction device is used to remove the high-temperature gaseous products obtained from pulse heating, namely aluminum vapor and hydrocarbon gases, from the reaction zone and form high-speed hot air, which is then transported to the drying device for material drying. During the hot air transport process, most of the aluminum vapor condenses and adheres to the surface of the paper-plastic aluminum granules, continuing to participate in the circulation as a conductive medium. The hydrocarbon gases are stored in a gas storage tank for further utilization as a high-value-added product.

[0022] Furthermore, it also includes a primary condensing device and a secondary condensing device. The primary condensing device is connected to the drying device, and the secondary condensing device is connected to the primary condensing device. The gas storage tank and the cleaning equipment are both connected to the secondary condensing device.

[0023] The primary condenser is used to remove and recover trace amounts of aluminum remaining in the hydrocarbon gas, while the secondary condenser is used to remove water vapor from the gas and recover it to the cleaning device for reuse, thereby obtaining dry and pure hydrocarbon gas.

[0024] Furthermore, the Joule device includes a reaction chamber and conductive electrodes. One side of the reaction chamber is connected to a process tube, and a compression piston is provided inside the process tube. Two conductive electrodes are symmetrically arranged inside the reaction chamber. The collection tank is connected to the other side of the reaction chamber, and an automatic door is provided at the connection point. The process tube is equipped with a weight sensor. When the weight signal reaches a threshold, the weight sensor sends a command to the compression piston through the controller to push the mixture into the reaction chamber. The bottom of the reaction chamber is also equipped with a weight sensor. When the mixture enters, the weight sensor transmits a signal through the controller to close the automatic door. The conductive electrodes on both sides move towards each other to compress the mixture, so that the mixture is in a closed space.

[0025] After the mixture enters the process tube, the internal weight sensor sends a command to the compression piston, pushing the mixture into the reaction chamber. Subsequently, the weight sensor in the reaction chamber transmits a signal to control the automatic door to close, the conductive electrodes on both sides move closer together and compress the mixture, and the capacitor bank provides high voltage and high current pulse discharge to heat the mixture.

[0026] The beneficial effects of the aforementioned paper-plastic-aluminum composite packaging waste recycling system are as follows: pulsed current can heat the waste to ultra-high temperature in a very short time, eliminating the need for step-by-step reduction. It is simple, efficient, and low-cost, and can also yield high-value-added products such as graphene, aluminum vapor, and hydrocarbon gases. Furthermore, by recovering and reusing the gases, it achieves product recycling and energy conservation and emission reduction. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic flowchart illustrating a method for recycling paper-plastic-aluminum composite packaging waste according to an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram of a Joule device for a paper-plastic-aluminum composite packaging waste recycling system is shown. Figure 1 ; Figure 3 for Figure 1 A schematic diagram of a Joule device for a paper-plastic-aluminum composite packaging waste recycling system is shown. Figure 2 ; Figure reference numerals: 1-Reaction chamber, 2-Conductive electrode, 3-Process tube, 31-Compression piston, 4-Collection tank, 5-Automatic door, 6-Threaded sleeve, 61-Screw, 62-Helical groove, 7-Motor. Detailed Implementation

[0029] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0030] Please see Figure 1 This invention provides a method and system for recycling waste from paper-plastic-aluminum composite packaging. The method includes the following steps: Crushing involves breaking down waste aluminum-plastic packaging into particles. Washing: Use water to wash the crushed particles to remove impurities from them. Drying involves heating and drying the cleaned granules. Mixing involves mixing the particles with a conductive medium. Heating, specifically pulse heating of the mixture; The solid graphene obtained after heating is collected, and a mixture of aluminum vapor and hydrocarbon gas is extracted. The aluminum vapor is condensed to obtain solid aluminum, and the hydrocarbon gas is collected and stored.

[0031] In this recycling process, the raw materials are first pretreated by crushing the waste aluminum-plastic packaging, washing to remove impurities, and then drying the particles. Subsequently, pulse heating is performed. Because paper-plastic-aluminum has poor conductivity, a conductive medium is added for mixing before pulse heating to achieve material conversion. The final products include high-purity graphene, high-purity aluminum, and hydrogen-rich gas.

[0032] Specifically, in the drying step, extracted aluminum vapor and hydrocarbon gas are used as the main heat source to heat and dry the cleaned particles. After releasing residual heat, the hydrocarbon gas is stored in a gas storage tank. During the hot air conveying process, the aluminum vapor releases latent heat, condenses upon cooling, and adheres to the particle surface. It acts as a conductive medium, mixing with the particles for heating, thus forming a cycle. After completing a preset number of cycles, the aluminum vapor condenses and solid aluminum is recovered.

[0033] The products obtained after pulse heating include high-temperature aluminum vapor and hydrogen-rich gas, which can be used as the main heat source for drying during the recovery process, effectively utilizing preheating and reducing process energy consumption. Furthermore, the condensed solid aluminum can be used as a conductive medium for further pulse heating of paper-plastic aluminum, forming a product cycle. Finally, high-purity solid aluminum is obtained, and the hydrogen-rich gas can be stored for later use as a high-value-added product.

[0034] Specifically, in the drying step, after the hydrocarbon gas releases residual heat, it is stored after passing through primary and secondary condensation. Primary condensation is used to remove residual aluminum from the gas, and secondary condensation is used to remove water vapor from the gas. The two-stage condensation can recover the residual aluminum and water vapor, and the condensate can be recycled for the cleaning step.

[0035] Specifically, in the mixing step, the conveying rate of the conductive medium is set to M1 kg / h, and the conveying rate of the particles is set to M2 kg / h, where M1:M2=K. As the number of cycles increases, the value of K is adjusted to decrease. Since there is relatively little aluminum adhering to the paper-plastic-aluminum composite in the initial stage of the cycle, the conveying rate of the conductive medium is relatively high at this time. As the number of cycles increases, more aluminum is gradually recovered from the paper-plastic-aluminum composite, allowing the conveying rate of the conductive medium relative to the particles to be relatively lowered by decreasing the value of K.

[0036] The aforementioned method for recycling waste paper-plastic-aluminum composite packaging converts waste paper-plastic-aluminum gas into graphene, high-purity aluminum, and hydrogen-rich gas through pulse heating, achieving resource utilization and high-value utilization of waste paper-plastic-aluminum, resulting in significant economic benefits. Furthermore, a multi-stage recycling system is established, effectively utilizing waste heat and products, reducing process energy consumption and achieving product recycling. In addition, compared to the high cost, complex process, and unstable quality of traditional graphene preparation processes, this method significantly reduces the production cost of graphene, achieving low-cost and continuous stable preparation of graphene.

[0037] The recycling system used in the above method includes a crushing device, a washing device, a drying device, a vacuum feeding device, a process tube, a Joule device, and a collection tank connected in sequence.

[0038] The crushing device uses a common drive motor and crushing blade structure, suitable for crushing PE film and tough paper sheets to break paper-plastic-aluminum into granules. The cleaning device removes impurities from the granular raw materials. The drying device uses high-temperature aluminum vapor and hydrocarbon gas as the main heat source, with an auxiliary electric heating module as a temperature compensation unit. It also has a built-in humidity sensor to monitor the humidity of the granules in real time, and discharges the solids once a set threshold is reached. The vacuum feeding device is also connected to a discharger for adding a conductive medium. The granules and conductive medium are mixed and conveyed through the vacuum feeding device, which completely separates air from the material through internal negative pressure. The mixture is then fed into the Joule apparatus through a process tube. The Joule apparatus uses high voltage and high current pulse discharge to achieve millisecond-level heating to 3000℃. A vacuum pump maintains the reaction chamber under low vacuum to heat the mixture, ultimately yielding graphene, aluminum vapor, and hydrocarbon gas. A collection tank collects and stores the graphene.

[0039] Specifically, it also includes a purification device that purifies the water after cleaning. Its inlet and outlet are connected to the inlet and outlet of the cleaning device, respectively. The purification device is used to clean the wastewater after cleaning the particles, allowing it to be reused as clean, recycled water for further cleaning, thus achieving energy conservation and emission reduction.

[0040] The system also includes an extraction device and a gas storage tank. The extraction end of the extraction device is connected to the Joule apparatus, and the outlet end is connected to the drying device. The gas storage tank is also connected to the drying device. The extraction device is used to extract the high-temperature gaseous products generated during the high-temperature pulse process, namely aluminum vapor and hydrocarbon gases, from the reaction zone and form high-speed hot air, which is then transported to the drying device for material drying. During gas extraction, the gas first passes through an adjustable porosity filter screen to intercept dust particles in the airflow and prevent pipeline blockage. The filtered high-temperature gas enters the high-temperature resistant pipeline and forms high-speed hot air. During the hot air transport process, most of the aluminum vapor condenses and adheres to the surface of the paper-plastic aluminum granules, continuing to participate in the circulation as a conductive medium. The hydrocarbon gases are stored in the gas storage tank for further utilization as a high-value-added product. The extraction device is also connected to a buffer tank. When the aluminum vapor circulation reaches a preset number of times, the extraction device switches the pipeline to the buffer tank, allowing the remaining aluminum vapor to enter the buffer tank, where it quickly condenses and deposits upon contact with the low-temperature pipe wall, thus achieving aluminum recovery.

[0041] It also includes a primary condenser and a secondary condenser. The primary condenser is connected to the drying unit, and the secondary condenser is connected to the primary condenser. The gas storage tank and cleaning equipment are both connected to the secondary condenser. The primary condenser is used to remove and recover trace amounts of aluminum remaining in the hydrocarbon gas, and the secondary condenser is used to remove water vapor from the gas. The condensate is then recycled to the cleaning unit for reuse, thus obtaining dry and pure hydrocarbon gas. The hydrocarbon gas is stored in the gas storage tank as a high-value-added product for further utilization.

[0042] The Joule device includes a reaction chamber and conductive electrodes. One side of the reaction chamber is connected to a process tube, and a compression piston is provided inside the process tube. Two conductive electrodes are symmetrically arranged inside the reaction chamber. The collection tank is connected to the other side of the reaction chamber, and an automatic door is provided at the connection point. like Figure 2As shown, the Joule apparatus includes a reaction chamber 1 and conductive electrodes 2. One side of the reaction chamber 1 is connected to a process tube 3, and a compression piston 31 is installed inside the process tube 3. Two conductive electrodes 2 are symmetrically arranged inside the reaction chamber 1. A collection tank 4 is connected to the other side of the reaction chamber 1, and an automatic door 5 is installed at the connection point. A weight sensor is installed inside the process tube 3. When the weight signal reaches a threshold, the weight sensor sends a command to the compression piston 31 through the controller, pushing the mixture into the reaction chamber 1. A weight sensor is also installed at the bottom of the reaction chamber. When the mixture enters, the weight sensor transmits a signal through the controller to close the automatic door 5. The two conductive electrodes 2 move towards each other to compress the mixture, and together with the reaction chamber 1, the compression piston 31, and the automatic door 5, the mixture is placed in a closed space.

[0043] After the mixture enters process tube 3, the internal weight sensor sends a command to compression piston 31, pushing the mixture into reaction chamber 1. Subsequently, the weight sensor in the reaction chamber transmits a signal to control the automatic door 5 to close, causing the conductive electrodes 2 on both sides to move closer together and compress the mixture. The capacitor bank provides high voltage and high current pulse discharge, heating the mixture to 3000℃ in milliseconds. The pulse process uses infrared non-contact temperature detection and real-time data acquisition and recording of voltage, current, temperature, and discharge time. The touchscreen control integrates functions such as charge / discharge control, gas path switching, and heat dissipation management, allowing operators to adjust parameters according to actual conditions. The reaction time is set according to the parameters. After the pulse ends, automatic door 5 opens, and compression piston 31 pushes the produced graphene into collection tank 4, completing the collection of all products. Compression piston 31 then returns to its original position to begin the next cycle.

[0044] like Figure 3 As shown, the Joule apparatus also includes a threaded sleeve 6 and screws 61. The threaded sleeve 6 and screws 61 are disposed outside the reaction chamber 1. The internal thread of the threaded sleeve 6 consists of two sections of threads in opposite directions, which are threadedly connected to the two screws 61 respectively. The two conductive electrodes 2 are respectively connected to the two screws 61. In addition, spiral grooves 62 are formed on the surfaces of both ends of the threaded sleeve 6. The automatic door 5 is a structure of two relatively movable baffles. The two baffles are inserted at the connection between the reaction chamber 1 and the collection tank 4, and each of the two baffles has a slider that is slidably connected to the spiral groove 62 at its outer end.

[0045] After the controller transmits a signal, the motor 7 drives the threaded sleeve 6 to rotate through the gear transmission structure, which enables the two screws 61 to move the conductive electrodes 2 relative to each other. At the same time, the spiral groove 62 on the surface also drives the baffle structure to move relative to each other, so that the automatic door 5 opens or closes.

[0046] The aforementioned paper-plastic-aluminum composite packaging waste recycling system utilizes pulsed current to heat waste to ultra-high temperatures in an extremely short time, eliminating the need for step-by-step reduction. This system is simple, efficient, and low-cost, and can also yield high-value-added products such as graphene, aluminum vapor, and hydrocarbon gases. Furthermore, by recovering and reusing the gases as a heat source and conductive medium, it achieves product recycling and energy conservation and emission reduction.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A method for recycling waste from paper-plastic-aluminum composite packaging, characterized in that, Includes the following steps: Crushing involves breaking down waste aluminum-plastic packaging into particles. Mixing involves mixing the particles with a conductive medium. Heating, specifically pulse heating of the mixture; The solid graphene obtained after heating is collected, and a mixture of aluminum vapor and hydrocarbon gas is extracted. The aluminum vapor is condensed to obtain solid aluminum, and the hydrocarbon gas is collected and stored. In the drying process: The cleaned particles are heated and dried using extracted aluminum vapor and hydrocarbon gas. During the hot air conveying process, the aluminum vapor releases latent heat and condenses upon cooling, adhering to the particle surface and acting as a conductive medium. It is heated together with the particles to form a cycle until the preset number of cycles is completed. After the cycle is completed, the aluminum vapor is condensed and the solid aluminum is recovered.

2. The method for recycling paper-plastic-aluminum composite packaging waste according to claim 1, characterized in that, It also includes the following steps: Washing: Use water to wash the crushed particles to remove impurities from them. Drying involves heating and drying the cleaned particles.

3. The method for recycling paper-plastic-aluminum composite packaging waste according to claim 1, characterized in that, In the drying process: After releasing waste heat, the hydrocarbon gas is stored after passing through primary and secondary condensation. Primary condensation removes residual aluminum from the gas, and secondary condensation removes water vapor from the gas.

4. The method for recycling paper-plastic-aluminum composite packaging waste according to claim 1, characterized in that, In the mixing step: Let the conveying rate of the conductive medium be M1 kg / h, the conveying rate of the particles be M2 kg / h, and M1:M2=K. As the number of cycles increases, the value of K is adjusted to decrease.

5. A paper-plastic-aluminum composite packaging waste recycling system, used in any one of the methods described in claims 1-4, characterized in that, It includes a crushing device, a washing device, a drying device, a vacuum feeding device, a process tube, a Joule device, and a collection tank connected in sequence.

6. A paper-plastic-aluminum composite packaging waste recycling system according to claim 5, characterized in that, It also includes a purification device that can purify the water after cleaning, with its inlet and outlet connected to the outlet and inlet of the cleaning device, respectively.

7. A paper-plastic-aluminum composite packaging waste recycling system according to claim 5, characterized in that, It also includes an air extraction device and an air storage tank. The air extraction end of the air extraction device is connected to the Joule device, and the air outlet end is connected to the drying device. The air storage tank is connected to the drying device.

8. A paper-plastic-aluminum composite packaging waste recycling system according to claim 7, characterized in that, It also includes a primary condenser and a secondary condenser. The primary condenser is connected to the drying device, and the secondary condenser is connected to the primary condenser. The gas storage tank and the cleaning equipment are both connected to the secondary condenser.

9. A paper-plastic-aluminum composite packaging waste recycling system according to claim 5, characterized in that, The Joule device includes a reaction chamber and conductive electrodes. One side of the reaction chamber is connected to a process tube, and a compression piston is provided inside the process tube. Two conductive electrodes are symmetrically arranged inside the reaction chamber. The collection tank is connected to the other side of the reaction chamber, and an automatic door is provided at the connection point. The process tube is equipped with a weight sensor. When the weight signal reaches a threshold, the weight sensor sends a command to the compression piston through the controller to push the mixture into the reaction chamber. The bottom of the reaction chamber is also equipped with a weight sensor. When the mixture enters, the weight sensor transmits a signal through the controller to close the automatic door. The conductive electrodes on both sides move towards each other to compress the mixture, so that the mixture is in a closed space.

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