Preparation method of environment-friendly stone carton

Abstract

The invention relates to the technical field of stone carton manufacturing, in particular to a preparation method of an environment-friendly stone carton, which comprises the following steps: preparing materials, fully mixing stone powder, polyethylene and an additive, mixing the stone powder and polyethylene resin according to a certain proportion, carrying out melt extrusion, carrying out melt processing on the mixed stone powder and polyethylene through an extruder, and carrying out extrusion molding to obtain the environment-friendly stone carton. Drying and cooling: curing the extruded film or plate through a cooling system, cutting, and cutting the cooled stone paperboard according to the required size; through the arrangement of a sufficient mixing step, a proper environment-friendly material can be added into a manufacturing raw material, so that the mixed raw material contains the environment-friendly material, the influence on the environment after the stone carton is produced is reduced, the carbon emission in the production process is reduced, the formation of circular economy is facilitated, and the manufactured stone carton is easier to recycle and reuse; meanwhile, the waste treatment and disposal cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of stone carton manufacturing, and in particular to a method for preparing an environmentally friendly stone carton. Background Art

[0002] Stone carton is an environmentally friendly packaging material. Its main components are stone powder (calcium carbonate) and a small amount of polyethylene. It does not rely on wood in the production process, reducing the demand for forest resources. It has excellent water resistance and tear resistance and is more durable than traditional cartons. In addition, stone cartons are light in weight, which helps reduce transportation costs and energy consumption. Due to its recyclable and environmentally friendly characteristics, stone cartons are gradually becoming the preferred material for corporate packaging.

[0003] The traditional method of making stone cartons is to first mix stone powder (the main component is calcium carbonate) with a small amount of polyethylene, and then mix the stone powder and polyethylene in a specific proportion to form a uniform slurry. The mixed slurry is pressed and formed by a special papermaking machine. The slurry is pressed into thin sheets in the paper machine, and excess water is removed by squeezing to form preliminary paper. It is then folded and glued according to the design drawings to form cartons, and fixed with environmentally friendly glue or adhesive to achieve the production of stone paper. However, during the production process, stone powder and polyethylene are mixed in a specific proportion, resulting in the lack of environmentally friendly materials in the mixed raw materials, increasing the impact on the environment, and increasing carbon emissions in the production process. It is not conducive to the formation of a circular economy, making the stone cartons difficult to be recycled and reused after production, and greatly increasing the cost of waste treatment and disposal. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a method for preparing an environmentally friendly stone carton, which solves the technical problem that it is difficult to fully mix environmentally friendly materials with stone raw materials.

[0005] (II) Technical solution In order to achieve the above object, the present invention provides a method for preparing an environmentally friendly stone carton, comprising the following steps: S1. Material preparation: stone powder, polyethylene, additives. The main component of stone carton is stone powder. Usually harmless calcium carbonate powder is used. Polyethylene is used to combine polyethylene resin (PE) with stone powder. Some additives such as antioxidants, colorants or other modifiers can be added as needed; S2. Fully mix: Mix the stone powder and polyethylene resin in a certain proportion (usually 70%-80% of stone powder and 20%-30% of polyethylene). A high-speed mixer can be used for uniform mixing. Additives are also mixed in this step. S3, melt extrusion: the mixed stone powder and polyethylene are melt-processed through an extruder, and the extruder is heated to a sufficiently high temperature (usually 150-200°C) to melt the polyethylene and fully mix it with the stone powder; S4, drying and cooling: the extruded film or sheet is solidified by passing it through a cooling system. The cooling process can be completed by water bath or air cooling; S5, cutting operation: according to S4, the cooled stone cardboard is cut according to the required size, and the cut cardboard is arranged into various parts of the carton according to the design requirements, and is ready for folding and gluing, so as to facilitate the production of the cut stone cardboard into a carton; S6. Forming and processing: According to the design drawings of the carton, the stone cardboard is punched, folded and glued. Laser cutting or molds can be used for precise processing. Environmentally friendly glue or hot pressing are used to glue the various parts of the carton together, so as to protect the environment and ensure the structural stability of the carton; S7. Inspection and packaging: The stone cartons are quality inspected to ensure that there are no defects and that they meet environmental protection and durability requirements. The cartons that pass the inspection are packaged for easy removal when needed.

[0006] Optionally, the sufficient mixing in S2 comprises the following steps: a. Sieve the stone powder through a sieve to ensure uniform particles, remove larger particles or impurities, and prepare appropriate environmentally friendly raw materials; b. Polyethylene resin usually exists in the form of granules or powder. Before use, the polyethylene resin is dried to remove any moisture that may exist; c. Add oxidants, colorants, UV inhibitors, etc. according to the formula requirements, usually in small amounts, but can significantly improve the performance of the final product; d. Use high-efficiency mixers, such as conical mixers, twin-screw mixers or high-shear mixers, and ensure that the equipment is clean and operating properly, especially the interior of the mixing chamber and the stirring blades; e. According to the designed formula, accurately weigh the mass of the stone powder and the required polyethylene resin to ensure the accurate ratio with the stone powder. At the same time, weigh the additives to achieve accurate mixing; f. Pour the stone powder and polyethylene resin into the pre-mixing container for preliminary mixing, and simultaneously mix the prepared environmentally friendly raw materials with them, usually using a low-speed agitator, mainly to roughly mix the two main components, and the pre-mixing time varies depending on the equipment type and material amount, generally 5-10 minutes; g. Place the pre-mixed stone powder and polyethylene resin (including additives) into a high-efficiency mixer and set an appropriate stirring speed to avoid uneven material dispersion due to excessively high speed or inadequate mixing due to excessively low speed.

[0007] Optionally, the melt extrusion of S3 specifically comprises the following steps: a. Equipment preparation and inspection: Choose a suitable extruder according to production requirements, usually a single-screw or twin-screw extruder, and then choose a mold that matches the product design, especially a mold with a wavy discharge channel, which helps to enhance the carton's buffer pressure capacity; b. Material heating and preheating: Add the stone powder and polyethylene resin mixture mixed in S2 into the hopper of the extruder, start the preheating program of the extruder, and gradually heat up to the melting temperature of the mixture. Usually, the melting temperature of polyethylene is between 150℃-200℃; c. Melting and mixing: When the extruder reaches the preset temperature, the screw is started to rotate. The rotation of the screw will push the mixture forward and further mix and melt during the movement; d. Extrusion and molding: Molding and extruding the molten and mixed materials through a mold; e. Cooling and solidification: The molten material after extrusion needs to be cooled immediately to prevent its deformation or adhesion. A water bath cooling or air cooling system can be used. As the cooling proceeds, the molten material gradually solidifies into the required shape and hardness. Ensure that the cooling process is uniform and sufficient to obtain high-quality extruded products; f. Cutting and collection: When the extruded material reaches a certain length or quantity, use the cutting device to cut it into appropriate sizes, ensure accurate and smooth cutting, avoid burrs or uneven edges, collect the cut extruded products, and carry out necessary sorting and classification, ready to send them to the next production stage for further processing.

[0008] Optionally, the extrusion and molding in d specifically include the following steps: ① Mold positioning: Make sure the mold is correctly installed at the outlet of the extruder and is tight and seamless; ② Extrusion starts: When the molten material reaches the mold inlet, it starts to extrude from the mold outlet. Since the mold has a wavy discharge channel, the extruded material will present a corresponding wavy shape; ③ Speed ​​and pressure control: adjust the rotation speed of the screw and the pressure of the extruder to control the speed and shape of the extruded material to ensure that the extruded material is continuous, stable and the shape meets the design requirements.

[0009] Optionally, the drying and cooling in S4 specifically include the following steps: a. Use a dryer to remove moisture from the raw materials to avoid problems in the subsequent process; b. Place the materials evenly into the drying equipment to avoid material accumulation or overlap to ensure uniform drying; c. Use a hygrometer or other testing tools to check the humidity of the material to ensure that it meets the standards. If the material is still damp, adjust the drying time or temperature for further drying; d. Cool the material through strong wind flow, which is suitable for smaller-scale production or fine control of the cooling process, or use fans or air coolers to cool the extruded materials.

[0010] Optionally, the step a specifically includes the following steps: ① Check whether the stone powder contains excess moisture. The stone powder should be free of lumps and impurities. If the stone powder is damp or lumpy, it needs to be crushed and screened again; ② Set an appropriate drying time to ensure that moisture is completely removed. The time depends on the amount of material and the efficiency of the equipment; ③ Set the drying temperature according to the material type. The drying temperature of polyethylene resin is usually between 70-90°C, and the drying temperature of stone powder is usually between 60-80°C. It can be adjusted according to actual conditions; ④ The drying time of stone powder is usually 1-3 hours, and the specific time depends on the humidity of the stone powder and the efficiency of the drying equipment. The drying time of polyethylene is usually 1-2 hours, which also depends on the humidity of the resin and the equipment conditions; ⑤ Adjust the wind speed according to the equipment specifications to ensure that the hot air flows evenly; ⑥ Place the materials to be dried evenly on the tray or conveyor belt of the dryer to avoid stacking or covering. If the amount of materials is large, they can be placed in layers to ensure uniform drying; Take samples from the drying equipment regularly to check the dryness of the material to ensure the accuracy of drying.

[0011] Optionally, the step d specifically includes rapidly cooling the hot material by means of a water bath or air flow after the hot material is taken out of the production equipment, so as to ensure that the material is cooled from a molten state to a solid state.

[0012] Optionally, the above d also specifically includes the need to control the cooling rate to avoid deformation of the material or internal stress. The cooled material should be inspected for defects and its shape should be ensured to be stable, and then sorted, classified and packaged for subsequent processing or use.

[0013] Optionally, the S5 cutting operation specifically includes the following steps: a. The raw material of stone cartons is usually composite paperboard. Check whether its surface is flat and defect-free, ensure that the size of the raw material meets the production requirements, and check the thickness and density of the material; b. Set the parameters of the cutting machine, such as cutting speed, tool pressure, etc., according to the thickness and properties of the material, and again ensure that the depth of the cutting tool or laser beam is suitable for the material thickness; c. Import the design drawings into the control system of the cutting machine to ensure that the size and cutting path of the drawings are accurate; d. Place the stone carton material to be cut flat on the cutting table and secure it with a clamp or fixture to prevent it from moving or warping during the cutting process; e. The cutting equipment will cut according to the set path and parameters. The operator should monitor the cutting process to ensure that the cutting goes smoothly; f. Remove the cut material and check whether the cut edge is smooth, without burrs or deformation, ensure that the cut size and shape meet the design requirements, and make necessary adjustments or trimming.

[0014] (III) Beneficial effects The beneficial effects of the present invention are: 1. The present invention can add appropriate environmentally friendly materials to the raw materials through the setting of the full mixing step, so that the mixed raw materials have environmentally friendly materials, reduce the impact of stone cartons on the environment after production, reduce carbon emissions in the production process, and help form a circular economy, so that the stone cartons after production are easier to be recycled and reused, and at the same time greatly reduce the cost of waste treatment and disposal; 2. The present invention can ensure that the raw materials are evenly mixed in a molten state through the setting of the melt extrusion step, thereby improving the uniformity and consistency of the carton material. The melt extrusion process can make the material fully fused at high temperature, which is helpful to enhance the physical properties of the carton, improve the tear resistance, water resistance and compressive strength. At the same time, the melt extrusion can make the material have good fluidity at high temperature, which helps to ensure the filling and molding effect in the mold, so that each part of the stone carton can be formed evenly; 3. The present invention can remove moisture from the raw materials through the setting of drying and cooling steps, making the paper more solid and stable, and improving the overall quality of the carton. The dried paper has the required strength and toughness, reducing the deformation and damage that may occur during the use of the carton. At the same time, through the drying and cooling treatment, the physical properties of the carton are improved, making it more stable under various environmental conditions (such as humidity and temperature changes), thereby enhancing the durability and adaptability of the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a flow chart of the overall preparation method of the present invention; Figure 2 A detailed flow chart of the present invention fully mixed; Figure 3 It is a specific flow chart of melt extrusion of the present invention; Figure 4 It is a specific flow chart of extrusion and molding of the present invention; Figure 5It is a specific flow chart of drying and cooling of the present invention; Figure 6 It is a specific flow chart of the drying of the present invention; Figure 7 It is a specific flow chart of the cutting operation of the present invention. DETAILED DESCRIPTION

[0016] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0017] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0018] Reference Figure 1 and Figure 7A method for preparing an environmentally friendly stone carton includes the following steps: material preparation: stone powder, polyethylene, additives. The main component of the stone carton is stone powder, usually harmless calcium carbonate powder. Polyethylene is used to combine the polyethylene resin (PE) of the stone powder. Some additives such as antioxidants, colorants or other modifiers can be added as needed; fully mixing: mixing the stone powder and the polyethylene resin in a certain proportion (usually 70%-80% of the stone powder and 20%-30% of the polyethylene). A high-speed mixer can be used for uniform mixing. The added additives are also mixed in this step; melt extrusion: mixing the mixed stone powder and polyethylene Ethylene is melt processed through an extruder, which is heated to a sufficiently high temperature (usually 150-200°C) to melt the polyethylene and fully mix it with the stone powder; Drying and cooling: the extruded film or sheet is solidified through a cooling system, which can be completed by water bath or air cooling; Cutting operation: the cooled stone cardboard is cut according to the required size, and the cut cardboard is arranged into various parts of the carton according to the design requirements, ready for folding and gluing, so as to facilitate the cutting of the stone cardboard into a carton; Forming and processing: according to the design drawings of the carton, the stone cardboard is punched, folded and glued, which can be Use laser cutting or molds for precise processing, and use environmentally friendly glue or hot pressing to glue the various parts of the carton together to protect the environment and ensure the structural stability of the carton; Inspection and packaging: Check the quality of the finished stone cartons to ensure that there are no defects and that they meet environmental protection and durability requirements. The qualified cartons will be packaged for easy removal when needed; The cutting operation specifically includes the following steps: The raw material of the stone carton is usually composite cardboard. Check whether its surface is flat and defect-free, ensure that the raw material size meets production requirements, and check the thickness and density of the material; Set the cutting machine according to the thickness and properties of the material Parameters, such as cutting speed, tool pressure, etc., again ensure that the depth of the cutting tool or laser beam is suitable for the material thickness; import the design drawing into the control system of the cutting machine to ensure that the size of the drawing and the cutting path are accurate; place the stone carton material to be cut flatly on the cutting table and fix it with a clamp or fixture to prevent it from moving or tilting during the cutting process; the cutting equipment will cut according to the set path and parameters, and the operator should monitor the cutting process to ensure that the cutting goes smoothly; remove the cut material, check whether the cut edge is smooth, without burrs or deformation, ensure that the cut size and shape meet the design requirements, and make necessary adjustments or trimming.

[0019] Reference Figure 2, full mixing includes the following steps: sieve the stone powder through a sieve to ensure that its particles are uniform, remove larger particles or impurities, and prepare appropriate environmentally friendly raw materials; polyethylene resin usually exists in the form of particles or powders. Before use, the polyethylene resin is dried to remove possible moisture; add oxidants, colorants, UV inhibitors, etc. according to the formula requirements, usually in small amounts, but can significantly improve the performance of the final product; use high-efficiency mixers such as conical mixers, double-screw mixers or high-shear mixers, and ensure that the equipment is clean and operates normally, especially the interior of the mixing chamber and the stirring blades; accurately weigh the mass of the stone powder according to the designed formula Weigh the required polyethylene resin to ensure the accurate ratio with stone powder, and also weigh the additives to achieve precise mixing; pour the stone powder and polyethylene resin into the premixing container for preliminary mixing, and mix the prepared environmentally friendly raw materials with them synchronously, usually with a low-speed agitator, mainly to roughly mix the two main components, and the premixing time varies depending on the type of equipment and the amount of materials, generally 5-10 minutes; put the premixed stone powder and polyethylene resin (including additives) into a high-efficiency mixer, set an appropriate stirring speed to avoid uneven dispersion of materials due to excessively high speed or insufficient mixing due to excessively low speed.

[0020] By setting up a full mixing step, appropriate environmentally friendly materials can be added to the raw materials, so that the mixed raw materials contain environmentally friendly materials, reducing the impact of stone cartons on the environment after production, reducing carbon emissions in the production process, and helping to form a circular economy. The produced stone cartons are easier to recycle and reuse, while greatly reducing the cost of waste treatment and disposal.

[0021] Reference Figure 3 and Figure 4, melt extrusion specifically includes the following steps: Equipment preparation and inspection: According to production needs, a suitable extruder is selected, usually a single-screw or twin-screw extruder, and then a mold that matches the product design is selected, especially a mold with a wavy discharge channel, which helps to enhance the buffering pressure capacity of the carton; Material heating and preheating: Add the mixed stone powder and polyethylene resin mixture in S2 into the hopper of the extruder, start the preheating program of the extruder, and gradually heat it to the melting temperature of the mixture. Usually, the melting temperature of polyethylene is between 150℃-200℃; Melting and mixing: When the extruder reaches the preset temperature, start the screw rotation. The rotation of the screw will push the mixture forward and further mix and melt during the movement; Extrusion and molding: The molten and mixed materials are molded and extruded through a mold; Cooling and solidification: The molten material after extrusion needs to be cooled immediately to prevent it from deformation or adhesion. A water bath cooling or air cooling system can be used. , as the cooling proceeds, the molten material gradually solidifies into the required shape and hardness, ensuring that the cooling process is uniform and sufficient to obtain high-quality extruded products; Cutting and collection: when the extruded material reaches a certain length or quantity, use a cutting device to cut it into a suitable size, ensure that the cutting is accurate and smooth, avoid burrs or uneven edges, collect the cut extruded products, and carry out necessary sorting and classification, ready to send them to the next production stage for further processing and processing; Mold positioning: ensure that the mold is correctly installed at the outlet end of the extruder and is tight and seamless; Extrusion starts: when the molten material reaches the mold inlet, it starts to extrude from the mold outlet. Since the mold has a wavy discharge channel, the extruded material will present a corresponding wavy shape; Speed ​​and pressure control: adjust the rotation speed of the screw and the pressure of the extruder to control the speed and shape of the extruded material to ensure that the extruded material is continuous, stable and the shape meets the design requirements.

[0022] By setting up the melt extrusion step, it is possible to ensure that the raw materials are evenly mixed in a molten state, thereby improving the uniformity and consistency of the carton material. The melt extrusion process can fully fuse the materials at high temperatures, which helps to enhance the physical properties of the carton and improve its tear resistance, water resistance and compressive strength. At the same time, melt extrusion can make the material have good fluidity at high temperatures, which helps to ensure the filling and molding effect in the mold, so that each part of the stone carton can be formed evenly.

[0023] Please refer to Figure 5 and Figure 6, drying and cooling specifically include the following steps: use a dryer to remove moisture from the raw materials to avoid problems in the subsequent removal process; place the materials evenly in the drying equipment to avoid material stacking or overlapping to ensure uniform drying; use a hygrometer or other detection tools to check the moisture of the materials to ensure that they meet the standards. If the material is still damp, adjust the drying time or temperature for further drying; cool the material through strong wind flow, which is suitable for smaller-scale production or fine control of the cooling process, or use a fan or air cooler to cool the extruded material; check whether the stone powder contains excess moisture. The stone powder should be free of lumps and impurities. If the stone powder is damp or lumpy, it needs to be crushed and screened again; set an appropriate drying time to ensure that the moisture is completely removed. The time depends on the amount of material and the efficiency of the equipment; set the drying temperature according to the type of material. The drying temperature of polyethylene resin is usually between 70-90°C, and the drying temperature of stone powder is usually The temperature is between 60-80℃ and can be adjusted according to actual conditions. The drying time of stone powder is usually 1-3 hours, and the specific time depends on the humidity of the stone powder and the efficiency of the drying equipment. The drying time of polyethylene is usually 1-2 hours, which also depends on the humidity of the resin and the equipment conditions. The wind speed is adjusted according to the equipment specifications to ensure uniform flow of hot air. The material to be dried is evenly placed on the tray or conveyor belt of the dryer to avoid stacking or covering. If the amount of material is large, it can be placed in layers to ensure uniform drying. Samples are taken from the drying equipment regularly to check the degree of dryness of the material to ensure the accuracy of drying. After the hot material is taken out of the production equipment, it is quickly cooled by water bath or air flow to ensure that the material is cooled from the molten state to the solid state. The cooling rate needs to be controlled to avoid deformation of the material or internal stress. The cooled material should be checked for defects and ensure that its shape is stable. It is then sorted, classified and packaged for subsequent processing or use.

[0024] By setting up the drying and cooling steps, the moisture in the raw materials can be removed, making the paper stronger and more stable, and improving the overall quality of the carton. The dried paper has the required strength and toughness, reducing the deformation and damage that may occur during the use of the carton. At the same time, through the drying and cooling treatment, the physical properties of the carton are improved, making it more stable under various environmental conditions (such as humidity and temperature changes), enhancing the durability and adaptability of the carton.

[0025] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0028] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0029] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for preparing an environmentally friendly stone carton, characterized in that: The following steps are involved: S1. Material preparation: stone powder, polyethylene, additives. The main component of stone carton is stone powder. Harmless calcium carbonate powder is used. Polyethylene is used to combine polyethylene resin (PE) with stone powder. Add additives such as antioxidants or colorants as needed. S2. Thorough mixing: Mix the stone powder and polyethylene resin in a certain proportion (usually 70%-80% of the stone powder and 20%-30% of the polyethylene), use a high-speed mixer to mix, and add additives to obtain a mixture; S3, melt extrusion: melt-processing the mixture in S2, so that the polyethylene in the mixture is melted and mixed with the stone powder; S4, drying and cooling: the extruded film or sheet is solidified through a cooling system to obtain a stone paperboard; S5, cutting operation: cutting the stone cardboard according to the required size according to S4, arranging the cut cardboard into various parts of the carton according to the design requirements, preparing to fold and glue, so as to facilitate the production of the cut stone cardboard into a carton; S6, forming and processing: according to the design drawings of the carton, the stone cardboard is punched, folded and glued to obtain the stone carton; S7. Inspection and packaging: The stone cartons are quality inspected to ensure that there are no defects and that they meet environmental protection and durability requirements. The cartons that pass the inspection are packaged for easy removal when needed.

2. The method for preparing an environmentally friendly stone carton according to claim 1, characterized in that: The thorough mixing in S2 comprises the following steps: a. Sieve the stone powder through a sieve to remove large particles or impurities to obtain environmentally friendly raw materials; b. Before use, the polyethylene resin is dried to remove the existing moisture; c. Add oxidants, colorants, UV inhibitors and environmentally friendly raw materials gradually according to demand; d. stirring the step c using a mixer to obtain a mixture; e. According to the demand, weigh the mass of stone powder and the required polyethylene resin to ensure that the ratio with stone powder is 70%-80%. At the same time, weigh the additives to achieve the deployment; f. Pour the stone powder and polyethylene resin into the pre-mixing container for preliminary mixing, and simultaneously mix the prepared environmentally friendly raw materials with them, usually using a low-speed agitator, mainly to mix the two main components, and the pre-mixing time varies depending on the equipment type and material amount, generally 5-10 minutes; g. Put the pre-mixed stone powder and polyethylene resin (including additives) into a mixer, set the stirring speed, and obtain a stirred product.

3. The method for preparing an environmentally friendly stone carton according to claim 1, characterized in that: The melt extrusion of S3 specifically comprises the following steps: a. Equipment preparation and inspection: Select the extruder according to production requirements, and then select the mold that matches the product design to melt the mixture; b. Material heating and preheating: Add the mixture in S2 into the hopper of the extruder, start the preheating program of the extruder, and gradually heat it to the melting temperature of the mixture. Usually, the melting temperature of polyethylene is between 150℃-200℃; c. Melting and mixing: When the extruder reaches the preset temperature, it is further mixed and melted through the extruder; d. Extrusion and molding: Molding and extruding the molten and mixed materials through a mold; e. Cooling and solidification: Through the air cooling system, the molten material is gradually solidified into the required shape and hardness to obtain high-quality extruded products; f. Cutting and collection: Use the cutting device to cut it into suitable sizes, collect the cut extruded products, and carry out necessary sorting and classification.

4. The method for preparing an environmentally friendly stone carton according to claim 3, characterized in that: The extrusion and molding in d specifically include the following steps: ① Mold positioning: Make sure the mold is correctly installed at the outlet of the extruder and is tight and seamless; ② Extrusion starts: Use a wavy die to extrude it so that the extruded material presents a corresponding wavy shape; ③ Speed ​​and pressure control: By adjusting the rotation speed of the screw and the pressure of the extruder, the speed and shape of the extruded material can be controlled.

5. The method for preparing an environmentally friendly stone carton according to claim 1, characterized in that: The drying and cooling in S4 specifically include the following steps a. Use a dryer to remove moisture from the raw materials; b. Place the materials evenly into the drying equipment to avoid material accumulation or overlap to ensure uniform drying; c. Check the humidity of the material with a hygrometer or other testing tools to ensure that it meets the standards; d. Cool the material by strong wind flow.

6. The method for preparing an environmentally friendly stone carton according to claim 5, characterized in that: The a specifically comprises the following steps: ① Check whether the stone powder contains excess moisture. If the stone powder is damp or agglomerated, it needs to be crushed and screened again; ② Set an appropriate drying time to ensure that moisture is completely removed; ③ Set the drying temperature according to the material type. The drying temperature of polyethylene resin is usually between 70-90°C, and the drying temperature of stone powder is usually between 60-80°C; ④ The drying time of stone powder is usually 1-3 hours, and the drying time of polyethylene is usually 1-2 hours; ⑤ Adjust the wind speed according to the equipment specifications to ensure that the hot air flows evenly; ⑥ Place the materials to be dried evenly on the tray or conveyor belt of the dryer to avoid accumulation or covering; ⑦ Take samples from the drying equipment regularly to check the dryness of the material to ensure the accuracy of drying.

7. The method for preparing an environmentally friendly stone carton according to claim 5, characterized in that: The step d specifically includes rapidly cooling the hot material by means of a water bath or air flow after the hot material is taken out of the production equipment, so as to ensure that the material is cooled from a molten state to a solid state.

8. The method for preparing an environmentally friendly stone carton according to claim 5, characterized in that: The above-mentioned d specifically also includes the need to control the cooling rate to avoid deformation of the material or internal stress. The cooled material should be inspected for defects and ensure its shape is stable, and then sorted, classified and packaged for subsequent processing or use.

9. The method for preparing an environmentally friendly stone carton according to claim 1, characterized in that: The S5 cutting operation specifically includes the following steps: a. Use composite cardboard as the raw material for stone paper, check whether its surface is flat and defect-free, and ensure that the size of the raw material meets the production requirements; b. Set the parameters of the cutting machine according to the thickness and properties of the material, ensuring that the depth of the cutting tool or laser beam is suitable for the material thickness; c. Import the design drawings into the control system of the cutting machine to ensure that the size and cutting path of the drawings are accurate; d. Place the stone carton material to be cut flatly on the cutting table and fix it with a clamp or fixture; e. The cutting equipment cuts according to the set path and parameters, and the operator monitors the cutting process to ensure smooth cutting; f. Remove the cut material, check whether the cut edge is smooth, and make necessary adjustments or trimming.

10. An environmentally friendly stone carton prepared by the preparation method according to any one of claims 1 to 9.

Images