A production process and application of environmentally friendly recyclable PET container

Abstract

The invention discloses a production process of an environmentally friendly and recyclable PET container, which belongs to the technical field of production of packaging containers, and comprises the following steps: using bio-based PET material as raw material, wherein the bio-based content of the bio-based PET material is 50% to 80%; by optimizing the design of the mold, the waste of materials is reduced, and the material utilization rate is 95% to 99%; in the injection molding process, heating and cooling methods are adopted to reduce energy consumption, the heating temperature is controlled between 260°C and 300°C, and the cooling rate is 10°C / min to 20°C / min; the surface of the container is attached with an easily peelable or soluble environmentally friendly label material, and the label thickness is 0.05mm to 0.1mm; the production line integrates renewable energy equipment, such as solar photovoltaic panels or wind turbines, to provide clean energy, and the proportion of electricity provided by renewable energy to the total electricity consumption is 30% to 50%. The invention significantly reduces the dependence on petroleum-based raw materials, reduces carbon footprint, and improves the sustainability and environmental performance of materials.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging container production, in particular to a production process and application of an environmentally friendly and recyclable PET container. Background Art

[0002] PET (polyethylene terephthalate) containers are widely used in the market, mainly for the packaging of beverages, food and other consumer goods. These containers have the advantages of being light, transparent, pressure-resistant and low-cost, and are widely used in various packaging needs.

[0003] However, with the increasing awareness of environmental protection and the requirements for sustainable development, traditional PET containers face many challenges and need to be improved and innovated. For example, traditional PET materials are mainly made of petroleum-based raw materials, and a large amount of fossil fuels are consumed during the production process, which increases carbon emissions. They are difficult to degrade in the natural environment, resulting in a large amount of plastic waste accumulation, causing serious pollution to the environment. At the same time, the design of production molds is often lacking in perfection and optimization, resulting in material waste and production defects, low production efficiency, and a lack of effective antibacterial and anti-fouling measures on the surface, which easily breeds bacteria and dirt, affecting the health of users. Summary of the invention

[0004] The object of the present invention is to provide a production process and application of an environmentally friendly and recyclable PET container to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a production process of an environmentally friendly and recyclable PET container, comprising the following steps:

[0006] S1: Using bio-based PET material as raw material, wherein the bio-based content of the bio-based PET material is 50% to 80%;

[0007] S2: By optimizing the design of the mold, the material waste is reduced, the production efficiency is improved, and the material utilization rate is 95% to 99%;

[0008] S3: During the injection molding process, heating and cooling methods are used to reduce energy consumption. The heating temperature is controlled between 260℃ and 300℃, and the cooling rate is 10℃ / min to 20℃ / min.

[0009] S4: The container surface is affixed with an easily peelable or soluble environmentally friendly label material with a thickness of 0.05mm to 0.1mm;

[0010] S5: The production line integrates renewable energy equipment, such as solar photovoltaic panels or wind turbines, to provide clean energy, with electricity provided by renewable energy accounting for 30% to 50% of total electricity consumption;

[0011] S6: A micro sensor is embedded inside the container, and the sensor size is 1mm 3 Up to 5mm 3 ,Sensor types include temperature sensors, humidity sensors, and pressure sensors;

[0012] S7: adding a biodegradable additive to the PET material, wherein the amount of the biodegradable additive added is 1% to 5% of the total amount of the PET material;

[0013] S8: Coating a layer of micro-nano antibacterial and antifouling coating on the surface of the PET container, with a coating thickness of 10nm to 100nm.

[0014] Preferably, the optimized mold design includes:

[0015] S2.1: Use machine learning algorithms to predict material flow under different mold designs with an accuracy of 90% to 95%, preferably 92% to 95%;

[0016] S2.2: Select the optimal mold design solution based on the prediction results to reduce material waste and production defects, and shorten the mold design time by 20% to 30%, preferably 25% to 30%,

[0017] The prediction accuracy P is calculated as follows:

[0018]

[0019] Preferably, the heating and cooling methods include:

[0020] S3.1: Use heat exchange technology and phase change materials to improve energy efficiency and reduce energy consumption by 20% to 30%, preferably 25% to 30%;

[0021] S3.2: Rapid and uniform heating and cooling are achieved, with a heating time of 2 to 3 minutes, preferably 2.5 to 3 minutes, and a cooling time of 1 to 2 minutes, preferably 1.5 to 2 minutes;

[0022] The calculation formula of energy consumption reduction rate E is:

[0023]

[0024] Preferably, the environmentally friendly label material includes:

[0025] S4.1: Easy-to-peel label material, can be easily removed by simple physical operation, peel force is 0.3N / cm 2 Up to 0.5N / cm 2 , preferably 0.4N / cm 2 Up to 0.5N / cm 2 ;

[0026] S4.2: Soluble label material, automatically dissolves under required conditions (such as water temperature, pH value changes), and the label is completely dissolved after being immersed in 60℃ water for 1 hour;

[0027] The peel force F is calculated as:

[0028]

[0029] Preferably, the production line integrates renewable energy equipment including solar photovoltaic panels or wind turbines, and the solar photovoltaic panels or wind turbines are installed in the production plant to supplement the electricity demand for the production of PET containers.

[0030] Preferably, the production process further comprises the following steps:

[0031] S9: After the container is formed, the surface is treated to ensure the firm adhesion of the environmentally friendly label material. The label adhesion is 2N / cm 2 Up to 3N / cm 2 , preferably 2.5N / cm 2 Up to 3N / cm 2 ;

[0032] S10: Conduct quality inspection on finished containers to ensure compliance with environmental protection and safety standards, with a pass rate of 98% to 100%, preferably 99% to 100%;

[0033] The calculation formula of label adhesion A is:

[0034]

[0035] The formula for calculating the pass rate Q is:

[0036]

[0037] Preferably, the preparation process of the micro-nano coating and biodegradable additive includes: the micro-nano coating material is selected from silver ions, titanium dioxide, etc., the coating method includes electrostatic spraying, immersion pulling or chemical vapor deposition (CVD), and the coating thickness is 10nm to 100nm, preferably 20nm to 50nm.

[0038] Preferably, the biodegradable additive is a starch-based additive or polylactic acid (PLA), and the additive is uniformly mixed into PET by a twin-screw extruder, and the amount of the additive added is 1% to 5% of the total amount of the PET material, preferably 2% to 4%;

[0039] The calculation formula of biodegradation rate B is:

[0040]

[0041] Preferably, the production process further includes an environmentally friendly recycling process, and the environmentally friendly recycling process includes:

[0042] A recycling box, used to receive recyclables, wherein the recycling box has a built-in sensor for identifying the recyclables;

[0043] A central processing center, which is connected to each recycling bin via the Internet to monitor the recycling situation in real time;

[0044] A recycling plant for processing and reusing the recyclate, wherein the recycling plant processes the recycled PET material into new products using physical or chemical methods;

[0045] A consumer terminal is used to provide recycling instructions and reward mechanisms. The consumer terminal includes a smartphone application and a website, which encourages consumers to participate in recycling by rewarding points.

[0046] The invention discloses an application of an environmentally friendly and recyclable PET container, wherein the container is applicable to beverage packaging, food packaging and cosmetic packaging.

[0047] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0048] (1) The production process and application of the environmentally friendly recyclable PET container selects PET materials with a bio-based content of 50% to 80%, which are prepared from renewable plant resources such as corn starch and sugarcane bagasse. This not only reduces the demand for fossil fuels, but also reduces carbon emissions during the production process. Plant cellulose is converted into monomers through chemical or biological methods, and then the bio-based PET material is prepared through polymerization. This method ensures the bio-based characteristics of the material while maintaining good mechanical properties. It significantly reduces dependence on petroleum-based raw materials, reduces carbon footprint, and improves the sustainability and environmental performance of the material.

[0049] (2) Use low-viscosity adhesives (such as acrylic adhesives) to ensure that the label is easy to peel off with a peel force of 0.3N / cm 2 Up to 0.5N / cm 2 This makes it easier for users to use and recycle. Water-soluble adhesives (such as polyvinyl alcohol) are used to ensure that the label is completely dissolved after being immersed in 60°C water for 1 hour. This further improves the recyclability of the label and reduces environmental pollution. It improves the environmental friendliness and recyclability of the label, making it easier for users to identify and handle it.

[0050] (3) A micro sensor is embedded inside the container, and the sensor size is 1 mm 3 Up to 5mm 3, sensor types include temperature sensors, humidity sensors and pressure sensors. Sensors monitor parameters such as temperature, humidity, and pressure in the container to ensure food safety and quality. This not only improves product safety, but also facilitates user use and management. It improves the safety and functionality of the container and ensures the quality of food and beverages.

[0051] (4) Select antibacterial and antifouling materials such as silver ions and titanium dioxide, and ensure that the coating is evenly covered on the surface of the PET container through methods such as electrostatic spraying, immersion pulling or chemical vapor deposition (CVD). The coating thickness is 10nm to 100nm. The micro-nano coating has good antibacterial and antifouling properties, improves the hygiene and durability of the container, and extends the service life of the container. The micro-nano coating can give the container a special gloss and texture, and enhance the appearance of the product. The antibacterial and antifouling coating reduces the growth of bacteria and dirt, and ensures the health and safety of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 The present invention is a flow chart of a production process of an environmentally friendly and recyclable PET container. DETAILED DESCRIPTION

[0054] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0055] Unless otherwise defined, the up, down, left, right, front, back, inside and outside directions involved in this document are based on the up, down, left, right, front, back, inside and outside directions in the figures shown in the present invention, and are explained here together.

[0056] This embodiment provides Figure 1 The production process of an environmentally friendly recyclable PET container shown includes the following steps:

[0057] S1: Using bio-based PET material as raw material, wherein the bio-based content of the bio-based PET material is 50% to 80%;

[0058] S2: By optimizing the design of the mold, the material waste is reduced, the production efficiency is improved, and the material utilization rate is 95% to 99%;

[0059] S3: During the injection molding process, heating and cooling methods are used to reduce energy consumption. The heating temperature is controlled between 260℃ and 300℃, and the cooling rate is 10℃ / min to 20℃ / min.

[0060] S4: The container surface is affixed with an easily peelable or soluble environmentally friendly label material with a thickness of 0.05mm to 0.1mm;

[0061] S5: The production line integrates renewable energy equipment, such as solar photovoltaic panels or wind turbines, to provide clean energy, with electricity provided by renewable energy accounting for 30% to 50% of total electricity consumption;

[0062] S6: A micro sensor is embedded inside the container, and the sensor size is 1mm 3 Up to 5mm 3 ,Sensor types include temperature sensors, humidity sensors, and pressure sensors;

[0063] S7: adding a biodegradable additive to the PET material, wherein the amount of the biodegradable additive added is 1% to 5% of the total amount of the PET material;

[0064] S8: Coating a layer of micro-nano antibacterial and antifouling coating on the surface of the PET container, with a coating thickness of 10nm to 100nm.

[0065] In the embodiments, the use of bio-based PET materials: (1) PET materials with a bio-based content of 50% to 80% are selected and prepared from renewable plant resources such as corn starch and sugarcane bagasse. This not only reduces the demand for fossil fuels, but also reduces carbon emissions during the production process; (2) Plant cellulose is converted into monomers by chemical or biological methods, and then the bio-based PET materials are prepared by polymerization. This method ensures the bio-based characteristics of the material while maintaining good mechanical properties.

[0066] In an embodiment, the optimized mold design includes:

[0067] S2.1: Use machine learning algorithms to predict material flow under different mold designs with a prediction accuracy of 90% to 95%, preferably 92% to 95%; collect different mold design parameters and corresponding production data, including material flow, molding time, and finished product quality; use machine learning algorithms (such as deep neural networks, decision trees) to train models to predict material flow under different mold designs;

[0068] S2.2: Select the optimal mold design solution based on the prediction results, reduce material waste and production defects, and shorten the mold design time by 20% to 30%, preferably 25% to 30%;

[0069] The optimized mold design not only improves production efficiency, but also improves the quality of the finished product and reduces production defects. This unexpectedly leads to higher market competitiveness and customer satisfaction. The optimized mold design reduces unnecessary production steps and material waste, which indirectly reduces energy consumption and further improves overall energy efficiency. Regularly inspect the mold and record the wear of the mold. By comparing the mold life data before and after optimization, evaluate the impact of efficient heating and cooling systems on mold life. Install energy consumption monitoring equipment on the production line to record the energy consumption data of the mold before and after optimization in real time. By comparing the energy consumption data before and after optimization, evaluate the impact of the optimized mold design on energy consumption.

[0070] The prediction accuracy P is calculated as follows:

[0071]

[0072] In an embodiment, the heating and cooling methods include:

[0073] S3.1: Use heat exchange technology and phase change materials to improve energy utilization efficiency and reduce energy consumption by 20% to 30%, preferably 25% to 30%; including using heat exchangers to improve heat transfer efficiency and embedding phase change materials (such as paraffin, salt hydrate) in the mold to absorb and release heat and improve energy utilization efficiency;

[0074] S3.2: Rapid and uniform heating and cooling are achieved, with a heating time of 2 to 3 minutes, preferably 2.5 to 3 minutes, and a cooling time of 1 to 2 minutes, preferably 1.5 to 2 minutes;

[0075] Through efficient heat exchange technology and phase change materials, energy consumption during heating and cooling is significantly reduced. Efficient heating and cooling not only saves energy, but also shortens production cycles and improves the overall efficiency of the production line. Heating and cooling reduces thermal stress on the mold, extends the service life of the mold, and further reduces maintenance costs.

[0076] The calculation formula of energy consumption reduction rate E is:

[0077]

[0078] In the embodiment, the environmentally friendly label material includes:

[0079] S4.1: Easy-to-peel label material, can be easily removed by simple physical operation, peel force is 0.3N / cm 2 Up to 0.5N / cm2 , preferably 0.4N / cm 2 Up to 0.5N / cm 2 ; Use low-viscosity adhesive (such as acrylic adhesive) to ensure that the label is easy to peel off, apply the adhesive evenly on the label substrate, and attach the label to the surface of the PET container;

[0080] S4.2: Soluble label material, automatically dissolves under required conditions (such as water temperature, pH value changes), and the label is completely dissolved after being immersed in 60℃ water for 1 hour; select water-soluble adhesive (such as polyvinyl alcohol), ensure that the label is completely dissolved after being immersed in 60℃ water for 1 hour, evenly apply the adhesive on the label substrate, and attach the label to the surface of the PET container;

[0081] The easy-to-peel and soluble characteristics of the label are not only convenient for users, but also improve the separation efficiency during the recycling process and reduce recycling costs. The easy-to-peel and soluble label materials reduce secondary pollution during the recycling process, further improving the environmental performance of the entire system. Recycling tests were conducted to evaluate the separation efficiency of easy-to-peel and soluble labels during the recycling process. By comparing traditional label materials, the cost advantages of easy-to-peel and soluble labels in the recycling process were analyzed.

[0082] The peel force F is calculated as:

[0083]

[0084] In the embodiment, the traditional production line mainly relies on external power grid power supply, lacks self-sufficient energy supply, and increases energy cost and carbon emission. The production line integrated renewable energy equipment in this solution includes solar photovoltaic panels or wind turbines, which are installed in the production plant to supplement the production power demand of PET containers, significantly reducing carbon emission in the production process and improving energy sustainability. Solar photovoltaic panels are installed on the top of the production plant, and the area of ​​the photovoltaic panels accounts for 50% to 70% of the roof area of ​​the plant, preferably 60% to 70%; including the following steps: (1) Select the required solar photovoltaic panels; (2) Design the installation bracket to ensure the stability and lighting effect of the photovoltaic panels; (3) Connect the photovoltaic panels to the power grid to achieve power grid connection.

[0085] In some embodiments, a wind turbine is installed around a production plant, and the annual power generation of the wind turbine is 100,000 kWh to 200,000 kWh, preferably 150,000 kWh to 200,000 kWh; the steps include: (1) selecting a wind turbine of the required model; (2) designing the installation location to ensure the wind energy utilization efficiency of the wind turbine; (3) connecting the wind turbine to the power grid to achieve power grid connection.

[0086] Renewable energy ratio calculation: The renewable energy ratio is calculated by the following formula: R

[0087]

[0088] Solar photovoltaic panels and wind turbines provide part or even all of the required electricity, reducing dependence on external power grids. The use of renewable energy significantly reduces carbon emissions. At the same time, carbon emission monitoring equipment can be installed to record carbon emissions in real time during the production process, apply for environmental certification, and improve the environmental image of the enterprise. The use of renewable energy equipment not only reduces energy costs, but also can obtain additional income by selling excess electricity, further improving the economic benefits of the enterprise, signing power sales agreements with power grid companies, selling excess electricity, and regularly evaluating the economic benefits of renewable energy equipment, including reduced power costs and increased additional income.

[0089] In the embodiment, a micro sensor is embedded in the container, and the sensor size is 1mm 3 Up to 5mm 3 , sensor types include temperature sensors, humidity sensors, and pressure sensors. Sensors monitor parameters such as temperature, humidity, and pressure in the container to ensure food safety and quality. This not only improves product safety, but also facilitates user use and management. It improves the safety and functionality of the container and ensures the quality of food and beverages. Sensor data can be transmitted to the central management system in real time to help companies understand product status in a timely manner and provide better after-sales service. Sensor data can also be used in recycling to help recycling centers more accurately identify and classify recyclables and improve recycling efficiency. Sensor data is transmitted to the central management system through wireless communication technologies (such as Bluetooth and Wi-Fi), and personalized after-sales services are provided based on sensor data to solve user problems and needs. Built-in sensors in the recycling bin read sensor data on the container, transmit sensor data to the central processing center for data processing and classification, and provide recycling guidance based on sensor data to help users correctly classify and recycle containers.

[0090] In the embodiment, the production process further comprises the following steps:

[0091] S9: After the container is formed, the surface is treated to ensure the firm adhesion of the environmentally friendly label material. The label adhesion is 2N / cm 2 Up to 3N / cm 2 , preferably 2.5N / cm 2 Up to 3N / cm 2 ; The method comprises the following steps: (1) cleaning the surface of the container to remove dust and grease; (2) using plasma treatment or chemical treatment to improve the adhesion of the container surface; (3) attaching the environmentally friendly label material to the surface of the container;

[0092] S10: Conduct quality inspection on finished containers to ensure compliance with environmental protection and safety standards, with a pass rate of 98% to 100%, preferably 99% to 100%; including the following steps: (1) inspect the appearance of the container to ensure there are no obvious defects; (2) test the sealing and pressure resistance of the container; (3) test the adhesion and peelability of the label; (4) record the inspection results, and rework or scrap unqualified containers;

[0093] The calculation formula of label adhesion A is:

[0094]

[0095] The formula for calculating the pass rate Q is:

[0096]

[0097] In the embodiment, the preparation process of the micro-nano coating and the biodegradable additive includes: the micro-nano coating material is selected from silver ions, titanium dioxide, etc., the coating method includes electrostatic spraying, immersion pulling method or chemical vapor deposition (CVD), and the coating thickness is 10nm to 100nm, preferably 20nm to 50nm. The following steps are included: (1) selecting high-purity silver ions or titanium dioxide particles; (2) dispersing the particles in an organic solvent to prepare a coating; (3) uniformly coating the coating on the surface of the PET container; (4) firmly adhering the coating by heating or curing. The micro-nano coating has good antibacterial and antifouling properties, improves the hygiene and durability of the container, and extends the service life of the container. Monitor the hygiene of the container during use and evaluate the protective effect of the antibacterial and antifouling coating on the health of the user. Inform users of the health benefits of the antibacterial and antifouling coating through user manuals and advertising.

[0098] In the embodiment, the biodegradable additive is a starch-based additive or polylactic acid (PLA), and the additive is uniformly mixed into PET by a twin-screw extruder. The amount of the additive added is 1% to 5% of the total amount of PET material, preferably 2% to 4%; through the above measures, the biodegradation rate is significantly improved, the material is more easily degraded in the natural environment, and the pollution to the environment is reduced. Mechanical property tests are carried out to evaluate the effect of biodegradable additives on material properties. Quality inspection is carried out on materials containing biodegradable additives to ensure that they meet the standards. The degradation of biodegradable materials is observed in the natural environment. The development of the circular economy is promoted by recycling and reusing biodegradable materials.

[0099] The calculation formula of biodegradation rate B is:

[0100]

[0101] In the embodiment, the production process further includes an environmentally friendly recycling process, and the environmentally friendly recycling process includes:

[0102] A recycling box is used to receive recyclables, and the recycling box has a built-in sensor for identifying the recyclables; specifically, the method includes: (1) selecting a highly sensitive sensor (such as an RFID reader, a camera); (2) designing a sensor installation position to ensure the accuracy of identification and classification; (3) connecting the sensor to a central processing center to realize data transmission;

[0103] A central processing center, which is connected to each recycling bin via the Internet to monitor the recycling status in real time; specifically, it includes: (1) designing the hardware and software system of the central processing center; (2) developing a data management platform to achieve data storage and analysis; (3) setting up a monitoring interface to display the status of each recycling bin in real time;

[0104] A recycling plant for processing and reusing recyclables, wherein the recycling plant uses physical or chemical methods to process the recycled PET materials into new products; specifically, the recycling plant includes: (1) collecting the recycled PET materials, and performing preliminary classification and cleaning; (2) processing the recycled PET materials into new products by physical methods (such as crushing, melting) or chemical methods (such as depolymerization, repolymerization); (3) conducting quality inspection on the processed products to ensure that they meet the standards;

[0105] Consumer terminals are used to provide recycling instructions and reward mechanisms. The consumer terminals include smartphone applications and websites, which encourage consumers to participate in recycling by rewarding them with points. Specifically, they include: (1) developing smartphone applications and websites that provide recycling instructions and reward mechanisms; (2) establishing a points system where consumers can earn points by participating in recycling; and (3) points can be exchanged for coupons or gifts at cooperating merchants.

[0106] The invention discloses an application of an environmentally friendly and recyclable PET container, wherein the container is applicable to beverage packaging, food packaging and cosmetic packaging.

[0107] In the embodiment, beverage packaging: such as mineral water bottles and carbonated beverage bottles, with a capacity range of 250ml to 2L; specifically includes: (1) internal sensor: a micro sensor is embedded inside the container to monitor parameters such as temperature, humidity, and pressure inside the container to ensure food safety and quality. The sensor size is 1mm 3 Up to 5mm 3 , preferably 2mm 3 Up to 3mm 3, sensor types include temperature sensors, humidity sensors and pressure sensors; (2) Smart labels: Use smart labels with RFID or NFC chips to record the production information, usage history and recycling guidelines of the container, improve recycling efficiency and accuracy, and the label recognition accuracy rate is 99% to 100%; (3) Antibacterial and antifouling coating: The surface of the container is coated with a layer of micro-nano-level antibacterial and antifouling coating with a coating thickness of 10nm to 100nm, preferably 20nm to 50nm, to improve the hygiene and durability of the container.

[0108] In the embodiments, food packaging: such as edible oil bottles, condiment bottles, etc., with a capacity range of 100 ml to 1 L; specifically includes: (1) degradable lining: a degradable lining is used inside the container to protect the food while the lining can be naturally degraded after use to reduce environmental pollution. The lining material is PLA, PBAT, etc., and the lining thickness is 0.05 mm to 0.1 mm, preferably 0.07 mm to 0.1 mm; (2) environmental label: an easily peelable or soluble environmental label material is attached to the surface of the container, the label thickness is 0.05 mm to 0.1 mm, preferably 0.07 mm to 0.1 mm, and the label is completely dissolved after being immersed in 60°C water for 1 hour.

[0109] Example 1

[0110] In this embodiment, the raw materials are selected as follows:

[0111] (1) Bio-based PET material: PET material with a bio-based content of 60% was selected and prepared using corn starch.

[0112] (2) Biodegradable additives: 2% starch-based additives were selected and uniformly mixed into the PET material through a twin-screw extruder.

[0113] In this embodiment, mold design: the deep neural network model is used to predict the material flow under different mold designs, with a prediction accuracy of 92%. The optimal mold design solution is selected, and the mold design time is shortened by 25%.

[0114] In this embodiment, heating and cooling: using a high-efficiency heat exchanger and paraffin phase change material, energy consumption is reduced by 25%. The heating time is 2.5 minutes and the cooling time is 1.5 minutes.

[0115] In this embodiment, the label material is:

[0116] (1) Easy-to-peel label: Use low-viscosity acrylic adhesive with a peel force of 0.4N / cm 2 .

[0117] (2) Soluble label: Use polyvinyl alcohol water-soluble adhesive. The label will completely dissolve after being immersed in 60℃ water for 1 hour.

[0118] In this embodiment, energy integration:

[0119] (1) Solar photovoltaic panels: The photovoltaic panel area accounts for 60% of the factory roof area, with an annual power generation capacity of 150,000 kWh.

[0120] (2) Wind turbines: The annual power generation of wind turbines is 150,000 kWh, and the electricity provided by renewable energy accounts for 40% of the total electricity consumption.

[0121] In this embodiment, surface treatment and quality inspection:

[0122] (1) Surface treatment: plasma treatment, label adhesion is 2.5N / cm 2 .

[0123] (2) Quality inspection: The qualified rate is 99%.

[0124] In this embodiment, the coating and sensor:

[0125] (1) Micro-nano coating: Silver ion coating with a thickness of 30nm is selected.

[0126] (2) Internal sensor: embedded micro temperature sensor and humidity sensor, the sensor size is

[0127] 2mm 3 .

[0128] In this embodiment, it is applied to beverage packaging: a mineral water bottle with a capacity of 500 ml has a micro sensor embedded inside and an easily peelable or soluble environmentally friendly label attached to the surface.

[0129] Example 2

[0130] In this embodiment, the raw materials are selected as follows:

[0131] (1) Bio-based PET material: PET material with a bio-based content of 70% was selected and prepared from sugarcane bagasse.

[0132] (2) Biodegradable additives: 4% polylactic acid (PLA) additives were selected and uniformly mixed into the PET material through a twin-screw extruder.

[0133] In this embodiment, mold design: the decision tree model is used to predict the material flow conditions under different mold designs, with a prediction accuracy of 94%. The optimal mold design solution is selected, and the mold design time is shortened by 30%.

[0134] In this embodiment, heating and cooling: using a high-efficiency heat exchanger and salt hydrate phase change material, energy consumption is reduced by 30%. The heating time is 2.5 minutes and the cooling time is 1.5 minutes.

[0135] In this embodiment, the label material is:

[0136] (1) Easy-to-peel label: Use low-viscosity acrylic adhesive with a peel force of 0.5N / cm 2 .

[0137] (2) Soluble label: Use polyvinyl alcohol water-soluble adhesive. The label will completely dissolve after being immersed in 60℃ water for 1 hour.

[0138] In this embodiment, energy integration:

[0139] (1) Solar photovoltaic panels: The photovoltaic panel area accounts for 70% of the factory roof area, with an annual power generation of 180,000 kWh.

[0140] (2) Wind turbines: The annual power generation of wind turbines is 180,000 kWh, and the electricity provided by renewable energy accounts for 50% of the total electricity consumption.

[0141] In this embodiment, surface treatment and quality inspection:

[0142] (1) Surface treatment: Chemical treatment, label adhesion is 2.8N / cm 2 .

[0143] (2) Quality inspection: The qualified rate is 100%.

[0144] In this embodiment, the coating and sensor:

[0145] (1) Micro-nano coating: Titanium dioxide coating with a thickness of 40nm is selected.

[0146] (2) Internal sensor: embedded micro temperature sensor and pressure sensor, the sensor size is

[0147] 3mm 3 .

[0148] In this embodiment, the degradable lining is made of PLA material and has a thickness of 0.08 mm.

[0149] In this embodiment, it is applied to food packaging: a 1L edible oil bottle has a degradable lining inside and an easily peelable or soluble environmentally friendly label attached to the surface.

[0150] Example 3

[0151] In this embodiment, the raw materials are selected as follows:

[0152] (1) Bio-based PET material: PET material with a bio-based content of 80% was selected and prepared by mixing corn starch and sugarcane bagasse.

[0153] (2) Biodegradable additives: 3% starch-based additives and 1% polylactic acid (PLA) additives were selected and uniformly mixed into the PET material through a twin-screw extruder.

[0154] In this embodiment, mold design: the deep neural network model is used to predict the material flow under different mold designs, with a prediction accuracy of 95%. The optimal mold design solution is selected, and the mold design time is shortened by 25%.

[0155] In this embodiment, heating and cooling: using a high-efficiency heat exchanger and paraffin phase change material, energy consumption is reduced by 25%. The heating time is 2.5 minutes and the cooling time is 1.5 minutes.

[0156] In this embodiment, the label material is:

[0157] (1) Easy-to-peel label: Use low-viscosity acrylic adhesive with a peel force of 0.4N / cm 2 .

[0158] (2) Soluble label: Use polyvinyl alcohol water-soluble adhesive. The label will completely dissolve after being immersed in 60℃ water for 1 hour.

[0159] In this embodiment, energy integration:

[0160] (1) Solar photovoltaic panels: The photovoltaic panel area accounts for 60% of the factory roof area, with an annual power generation capacity of 150,000 kWh.

[0161] (2) Wind turbines: The annual power generation of wind turbines is 150,000 kWh, and the electricity provided by renewable energy accounts for 40% of the total electricity consumption.

[0162] In this embodiment, surface treatment and quality inspection:

[0163] (1) Surface treatment: plasma treatment, label adhesion is 2.5N / cm 2 .

[0164] (2) Quality inspection: The qualified rate is 99%.

[0165] In this embodiment, the coating and sensor:

[0166] (1) Micro-nano coating: Silver ion coating with a thickness of 30nm is selected.

[0167] (2) Internal sensor: embedded micro temperature sensor and humidity sensor, the sensor size is

[0168] 2mm 3 .

[0169] In this embodiment, the environmentally friendly dye is a plant-based dye, and the thickness of the dye is 0.03 mm.

[0170] In this embodiment, it is applied to cosmetic packaging: a cosmetic bottle with a capacity of 100 ml is embedded with a micro sensor inside, and an easily peelable or soluble environmental label is attached to the surface. The surface is dyed with plant-based dyes to improve environmental performance.

[0171] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0172] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production process for environmentally friendly and recyclable PET containers, characterized in that: The following steps are involved: S1: Raw material selection: Use bio-based PET material as raw material, where the bio-based content of the bio-based PET material is 50% to 80%; S2: Mold design: By optimizing the design of the mold, the waste of materials is reduced and the material utilization rate is 95% to 99%; S3: Injection molding: During the injection molding process, heating and cooling methods are used to reduce energy consumption. The heating temperature is controlled between 260°C and 300°C, and the cooling rate is 10°C / min to 20°C / min; S4: Label material: The container surface is affixed with an easily peelable or soluble environmentally friendly label material with a thickness of 0.05mm to 0.1mm; S5: Energy integration: The production line integrates renewable energy equipment to provide clean energy, and the proportion of electricity provided by renewable energy accounts for 30% to 50% of the total electricity consumption; S6: Quality monitoring: A micro sensor is embedded inside the container, and the sensor size is 1mm 3 Up to 5mm 3 ,Sensor types include temperature sensors, humidity sensors, and pressure sensors; S7: Biodegradation: adding biodegradable additives to the PET material, the amount of the biodegradable additives added is 1% to 5% of the total amount of the PET material; S8: Applying coating: Applying a layer of micro-nano antibacterial and antifouling coating on the surface of the PET container, with a coating thickness of 10nm to 100nm.

2. The production process of an environmentally friendly and recyclable PET container according to claim 1, characterized in that: The optimized mold design includes: S2.1: Use machine learning algorithms to predict material flow under different mold designs with an accuracy of 90% to 95%, preferably 92% to 95%; S2.2: Select the optimal mold design solution based on the prediction results, reduce material waste and production defects, and shorten the mold design time by 20% to 30%; The prediction accuracy P is calculated as follows:

3. The production process of an environmentally friendly and recyclable PET container according to claim 3, characterized in that: The heating and cooling methods include: S3.1: Use heat exchange technology and phase change materials to reduce energy consumption by 20% to 30%; S3.2: heating and cooling are achieved, with the heating time being 2 minutes to 3 minutes and the cooling time being 1 minute to 2 minutes; The calculation formula of energy consumption reduction rate E is:

4. The production process of an environmentally friendly and recyclable PET container according to claim 4, characterized in that: The environmentally friendly label materials include: S4.1: Easy-to-peel label material, easily removed by physical operation, peel force 0.3N / cm 2 Up to 0.5N / cm 2 ; S4.2: Soluble label material, automatically dissolves under required conditions (such as water temperature, pH value changes), and the label completely dissolves after being immersed in 60℃ water for 1 hour; The peel force F is calculated as:

5. The production process of an environmentally friendly and recyclable PET container according to claim 1, characterized in that: The production line integrates renewable energy equipment including solar photovoltaic panels or wind turbines, which are installed in the production plant to supplement the electricity demand for the production of PET containers.

6. The production process of an environmentally friendly and recyclable PET container according to claim 1, characterized in that: The production process also includes the following steps: S9: After the container is formed, the surface is treated to ensure the firm adhesion of the environmentally friendly label material. The label adhesion is 2N / cm 2 Up to 3N / cm 2 ; S10: Conduct quality inspection on finished containers to ensure compliance with environmental protection and safety standards, with a pass rate of 98% to 100%, preferably 99% to 100%; The calculation formula of label adhesion A is: The formula for calculating the pass rate Q is:

7. The production process of an environmentally friendly and recyclable PET container according to claim 1, characterized in that: The preparation process of the micro-nano coating and biodegradable additive includes: the micro-nano coating material is selected from silver ions, titanium dioxide, etc., the coating method includes electrostatic spraying, immersion pulling method or chemical vapor deposition (CVD), and the coating thickness is 10nm to 100nm.

8. The production process of an environmentally friendly and recyclable PET container according to claim 7, characterized in that: The biodegradable additive is a starch-based additive or polylactic acid, and the additive is uniformly mixed into PET through a twin-screw extruder, and the amount of the additive added is 1% to 5% of the total amount of the PET material; The calculation formula of biodegradation rate B is:

9. The production process of an environmentally friendly and recyclable PET container according to claim 1, characterized in that: The production process also includes an environmentally friendly recycling process, which includes: A recycling box, used to receive recyclables, wherein the recycling box has a built-in sensor for identifying the recyclables; A central processing center, which is connected to each recycling bin via the Internet to monitor the recycling situation in real time; A recycling plant for processing and reusing the recyclate, wherein the recycling plant processes the recycled PET material into new products using physical or chemical methods; A consumer terminal is used to provide recycling instructions and reward mechanisms. The consumer terminal includes a smartphone application and a website, which encourages consumers to participate in recycling by rewarding points.

10. An application of an environmentally friendly recyclable PET container manufactured by the production process according to any one of claims 1 to 9, characterized in that: The container is applicable to beverage packaging, food packaging and cosmetic packaging.

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