Environmentally friendly woven packaging bags based on polypropylene composites and their processing technologies

Abstract

The present invention relates to an environmentally friendly woven packaging bag based on a polypropylene composite material and its processing technology, which includes the following components: Bag body: It is woven by mixing polypropylene fibers, natural fibers, and biodegradable high-performance synthetic fibers. Among them, the proportion of polypropylene fibers is 60% to 70%, the proportion of natural fibers is 20% to 30%, and the proportion of biodegradable high-performance synthetic fibers is 5% to 10%; Reinforcement layer: It is sandwiched in the middle of the bag body and is composed of nanofiber materials. The fiber diameter thereof is within 10 to 50 nanometers, and micro ceramic particles are evenly distributed in the reinforcement layer to further enhance the strength and wear resistance of the bag body; Environmentally friendly coating: It is coated on the surface of the bag body, and this coating is made of a biodegradable environmentally friendly resin material; Through the optimized ratio of polypropylene fibers, natural fibers, and biodegradable high-performance synthetic fibers, and combined with a unique weaving structure and reinforcement layer design, the present invention greatly improves the strength and durability of the woven bag.

Description

Technical Field

[0001] The present invention relates to the technical field of polypropylene composite materials, and particularly to an environmentally friendly woven packaging bag based on polypropylene composite materials and its processing technology. Background Art

[0002] With the rapid development of the global economy and the continuous improvement of people's environmental awareness, the packaging industry is facing numerous challenges and changes. Among various packaging materials, woven bags, as a kind of packaging products widely used in various fields, have a continuous growing demand. However, traditional woven bags have a series of problems in materials and processes, and it is difficult to meet the requirements of modern society for high-quality, high-performance and environmentally friendly packaging products.

[0003] Traditional woven bags are mainly made of ordinary polypropylene materials, and their strength and durability are limited. When facing some scenarios that need to carry heavy items or experience complex transportation environments, they are prone to problems such as breakage and fracture, resulting in damage to the items inside the package and bringing economic losses to users. For example, during the logistics transportation process, especially in the case of long-distance transportation and frequent handling, traditional woven bags may not be able to withstand the weight and friction of goods, affecting the safe transportation of goods.

[0004] In terms of environmental protection, most traditional woven bags are difficult to degrade naturally and will cause long-term pollution to the environment after being discarded. With the increasingly strict environmental protection regulations and people's attention to sustainable development, developing degradable environmentally friendly packaging materials has become an urgent task. In addition, the production process of traditional woven bags is relatively simple and backward, with large energy consumption during production, and it is difficult to ensure the stability and consistency of product quality.

[0005] In the modern business environment, the functional requirements for packaging are also increasing continuously. For example, it is required that the packaging can provide real-time tracking function of goods information for convenient logistics management and inventory control. However, traditional woven bags lack intelligent design and cannot meet these emerging needs.

[0006] At the same time, with the development of various industries, the special performance requirements for woven bags are gradually increasing. For example, in some fields such as chemical industry and construction, it is required that woven bags have certain waterproof, anti-fouling, antibacterial and flame-retardant properties to ensure the safety and quality of the items inside the package. The performance of traditional woven bags in these aspects is often unsatisfactory and cannot effectively cope with various complex usage environments.

[0007] In summary, to solve the many problems existing in traditional woven bags and meet the market's demand for high-performance, environmentally friendly, and intelligent packaging products, it is urgent to develop an environmentally friendly woven packaging bag based on polypropylene composite materials and its innovative processing technology. This new type of woven bag should not only have excellent strength and durability to adapt to various harsh usage conditions but also meet environmental protection requirements, be degradable, and environmentally friendly. At the same time, through innovative processing technology, the stable improvement of product quality and the diversification of functions can be achieved, providing strong support for the sustainable development of the packaging industry. Summary of the Invention

[0008] (I) Technical Problems to be Solved

[0009] In view of the deficiencies of the prior art, the present invention provides an environmentally friendly woven packaging bag based on polypropylene composite materials and its processing technology.

[0010] (II) Technical Solutions

[0011] An environmentally friendly woven packaging bag based on polypropylene composite materials comprises the following components:

[0012] Bag body: It is woven by mixing polypropylene fibers, natural fibers, and biodegradable high-performance synthetic fibers. Among them, the proportion of polypropylene fibers is 60% to 70%, the proportion of natural fibers is 20% to 30%, and the proportion of biodegradable high-performance synthetic fibers is 5% to 10%;

[0013] Reinforcement layer: It is sandwiched in the middle of the bag body and is composed of high-strength nanofiber materials. The fiber diameter thereof is in the range of 10 nanometers to 50 nanometers, and micro-ceramic particles are evenly distributed in the reinforcement layer. The particle size of the ceramic particles is 1 micron to 5 microns, so as to further enhance the strength and wear resistance of the bag body;

[0014] Environmental protection coating: It is coated on the surface of the bag body. This coating is made of biodegradable environmental protection resin materials and has waterproof and anti-fouling functions. Nano-titanium dioxide, a photocatalytic material, is added to the coating, which can decompose organic pollutants on the surface of the bag body under light irradiation and improve the environmental protection performance;

[0015] Intelligent identification layer: It is located on one side surface of the bag body and is made of electronic paper materials. Information can be written and updated through wireless communication technology, and it is used to display cargo information and transportation status.

[0016] Furthermore, the polypropylene fibers are subjected to a surface treatment process to make their surfaces have a microscopic rough structure. The surface roughness parameter is set to 0.5 microns to 1 micron, and hydrophilic groups are grafted on their surfaces to improve their bonding force and hygroscopicity with other fibers;

[0017] The natural fiber is a plant fiber treated with special antibacterial treatment, with an antibacterial rate of over 90%, and at the same time, it is treated with flame retardant, and the flame retardant performance reaches V-0 level;

[0018] The degradable high-performance synthetic fiber has a molecular structure that enables it to be rapidly decomposed into harmless substances during the degradation process, and its tensile strength is in the range of 80 MPa to 120 MPa.

[0019] Furthermore, the weaving structure of the bag body adopts a warp and weft interweaving method. The warp density is set to be 40 to 60 threads per inch, and the weft density is set to be 30 to 50 threads per inch. And at the intersection of the warp and weft yarns, hot melt adhesive is used for local reinforcement, and the melting point of the hot melt adhesive is in the range of 120 °C to 150 °C;

[0020] Reinforcing ribs are provided at the edge part of the bag body. The reinforcing ribs are made of high-performance elastic materials, and their tensile strength is in the range of 50 MPa to 80 MPa. And a micro strain sensor is embedded inside the reinforcing ribs for real-time monitoring of the force condition of the bag body;

[0021] An anti-slip structure is provided at the bottom of the bag body. The anti-slip structure is made of rubber material, and its friction coefficient is in the range of 0.8 to 1.2. And magnetic particles are added to the rubber material so that it can achieve magnetic adsorption and fixation in specific transportation and storage scenarios.

[0022] Furthermore, it includes the following steps:

[0023] Material preparation step: Prepare polypropylene fiber, natural fiber, and degradable high-performance synthetic fiber in proportion, and respectively perform pretreatment on them, including cleaning, drying, carding, and surface modification operations;

[0024] Fiber mixing step: Uniformly mix the three pretreated fibers through a mixing device. Set the mixing time to be 20 min to 30 min, and add an environmentally friendly lubricant during the mixing process. Set the addition amount of the lubricant to be 3% to 5% to improve the fluidity and mixing uniformity of the fibers;

[0025] Weaving step: Use an advanced weaving device to weave the mixed fibers into a bag body according to the set weaving structure parameters. At the same time, add a reinforcing layer to the middle of the bag body during the weaving process and use an environmentally friendly adhesive for bonding. The preparation of the reinforcing layer combines electrospinning technology with the uniform dispersion process of micro ceramic particles;

[0026] Coating treatment step: Uniformly coat the surface of the bag body with a degradable environmental protection resin material through a spraying device. Set the coating thickness to be 50 microns to 80 microns. The process of adding photocatalytic materials to the coating material uses nano-dispersion technology to ensure the uniform distribution of the photocatalytic materials;

[0027] Manufacturing steps of the intelligent identification layer: Using printed electronics technology, make the electronic paper material into the intelligent identification layer, and connect it to the external data management system through the wireless communication module to achieve information interaction and update;

[0028] Post - processing steps: Perform drying, cooling, and shaping operations on the coated woven bag to ensure the quality and performance of the woven bag.

[0029] Furthermore, in the material preparation step, surface treatment is carried out on the polypropylene fiber. Combining plasma treatment technology and chemical grafting technology, set the treatment power to 5kW to 8kW, the treatment time to 10 min to 15 min, the grafted hydrophilic group to the hydroxyl group, and the grafting rate within the range of 15% to 20%;

[0030] The antibacterial treatment of natural fibers adopts the natural antibacterial agent impregnation process, the concentration of the antibacterial agent is 8% to 12%, the treatment time is 15 min to 20 min, and the flame - retardant treatment adopts the environmentally friendly flame - retardant agent spraying process, and the addition amount of the flame - retardant agent is 6% to 8%;

[0031] Molecular structure optimization treatment is carried out on the degradable high - performance synthetic fiber. Using specific catalysts and reaction conditions, set the dosage of the catalyst to 3% to 5%, the reaction temperature to 80°C to 100°C, and the reaction time to 30 min to 40 min.

[0032] Furthermore, in the weaving step, an intelligent weaving control system is adopted. This system can real - time monitor the parameters in the weaving process, such as weaving speed, tension, and the uniformity of fiber distribution, and automatically adjust according to the preset quality standards. An artificial intelligence algorithm is introduced into the system. Through the learning and analysis of a large amount of historical weaving data, the prediction and early intervention of potential problems in the weaving process are realized;

[0033] In the coating treatment step, ultraviolet curing technology is applied. Set the ultraviolet irradiation intensity to 80mW / cm² to 120mW / cm², the curing time to 20 seconds to 30 seconds. At the same time, precise control technology of temperature and humidity is adopted during the curing process. Set the temperature control range to 30°C to 40°C, and the humidity control range to 40% to 60%.

[0034] Furthermore, after adding the environmentally friendly adhesive, adhesive uniformity detection is carried out. Using infrared spectroscopy analysis technology, set the uniformity index to 90% to 95%, and detect the curing performance of the adhesive. Set the curing time within the range of 8 min to 12 min, and the bonding strength after curing within the range of 20MPa to 30MPa.

[0035] Furthermore, after plasma treatment, the surface activation of polypropylene fibers is detected. The detection method of surface activation energy is the laser-induced surface photovoltage method, and the surface activation energy should reach above 50 J / mol. At the same time, infrared spectroscopy analysis technology is used to detect and quantitatively analyze the hydrophilic groups grafted on the surface, and the detection accuracy of the grafted groups is set at 5%.

[0036] Furthermore, in the intelligent weaving control system, a machine learning algorithm is introduced and the system is trained based on historical weaving data. The number of training samples is set at 1000 to improve the prediction and adjustment accuracy of the system. During the training process, data augmentation technology is used to expand and optimize the sample data, and the data augmentation multiple is set at 5 times;

[0037] During the ultraviolet curing process, a nitrogen protection atmosphere is adopted, and the nitrogen flow rate is set at 5 L / min to 8 L / min to improve the curing quality and performance of the coating. At the same time, an online monitoring sensor is installed in the curing equipment to real-time monitor the key parameters during the curing process, such as ultraviolet intensity and nitrogen concentration, and the monitoring accuracy is set at 3%.

[0038] Furthermore, a separable buffer layer is arranged inside the woven bag. The buffer layer is made of recyclable foam material, and its buffer performance meets certain standard requirements. The thickness of the buffer layer is set at 5 mm to 10 mm;

[0039] A recyclable environmental protection zipper or sealing device is arranged on the bag body. Its durable times are not less than 500 times, and the sealing device has waterproof and dustproof functions and adopts a sealing structure design. The test index of the sealing performance is to keep no water leakage at a depth of 1 m underwater for 30 min;

[0040] A near-field communication (NFC) chip is integrated in the intelligent identification layer for realizing fast interaction and information reading with intelligent devices. The communication distance of the NFC chip is in the range of 5 cm to 10 cm.

[0041] Furthermore, in the post-treatment step, quality inspection and classification are carried out. Automated inspection equipment is adopted. The inspection items are set to include the bag body strength, coating quality, and functional performance of the intelligent identification layer. According to the inspection results, the woven bags are divided into different grades;

[0042] The waste generated during the processing is recycled and reused. The recycling rate is set to reach above 80% to achieve environmentally friendly production. After the recycled waste is classified, cleaned, and reprocessed, it is reapplied to the production of woven bags or the manufacture of other related products.

[0043] (III) Beneficial technical effects

[0044] By adopting an optimized ratio of polypropylene fibers, natural fibers, and biodegradable high-performance synthetic fibers, and combining a unique weaving structure and reinforcement layer design, the present invention significantly improves the strength and durability of the woven bag, enabling it to adapt to various complex usage environments and reducing cargo losses and packaging replacement costs caused by packaging damage.

[0045] By selecting biodegradable materials and adding photocatalytic materials to the coating, the present invention achieves excellent environmental protection performance of the woven bag, which can be rapidly degraded into harmless substances in the natural environment, and at the same time decomposes organic pollutants under light, reducing the negative impact on the environment and meeting the requirements of sustainable development.

[0046] By designing an intelligent identification layer and integrating electronic paper materials and near-field communication chips, the present invention realizes the real-time writing, updating, and reading of cargo information, facilitating logistics management and inventory control, and providing strong support for intelligent logistics and supply chain management.

[0047] By performing special surface treatments on polypropylene fibers and natural fibers, the present invention endows the woven bag with special properties such as good bonding strength, hygroscopicity, antibacterial property, and flame retardancy, ensuring the safety and quality of the packaged items and improving the applicability in different scenarios.

[0048] Through innovative processing techniques, including fiber pretreatment, intelligent weaving control, ultraviolet curing technology, and precise process parameter control, etc., the present invention ensures the stability and consistency of product quality, improves production efficiency, and at the same time realizes the recycling and reuse of waste, reduces production costs, and achieves environmentally friendly production.

[0049] By providing a separable buffer layer inside the woven bag and adopting an environmentally friendly zipper or sealing device with a special sealing structure, the present invention enhances the protection performance for the items inside the package, improves the buffering effect and sealing performance, and meets the requirements of long-term repeated use.

[0050] Through the comprehensive above-mentioned innovative designs and processes, the present invention provides a high-performance, environmentally friendly, and intelligent packaging solution for multiple industries such as logistics, chemical industry, construction, and food, promoting the sustainable development of related industries. Detailed implementation manners

[0051] Bag body: It is made by mixing and weaving polypropylene fibers, natural fibers, and biodegradable high-performance synthetic fibers, wherein the proportion of polypropylene fibers is 60% to 70%, the proportion of natural fibers is 20% to 30%, and the proportion of biodegradable high-performance synthetic fibers is 5% to 10%.

[0052] Reinforcement layer: sandwiched in the middle of the bag body, made of high-strength nanofiber material, with fiber diameters in the range of 10 nanometers to 50 nanometers, and micro ceramic particles are evenly distributed in the reinforcement layer, with the particle size of the ceramic particles being 1 micron to 5 microns, to further enhance the strength and wear resistance of the bag body.

[0053] Environmental protection coating: coated on the surface of the bag body, made of a degradable environmental protection resin material, and having waterproof and anti-fouling functions. Nano titanium dioxide, a photocatalytic material, is added to the coating, which can decompose organic pollutants on the surface of the bag body under light, improving the environmental protection performance.

[0054] Intelligent identification layer: located on one side surface of the bag body, made of electronic paper material, and information writing and updating can be achieved through wireless communication technology, used to display cargo information and transportation status.

[0055] A separable buffer layer is provided inside the woven bag. The buffer layer is made of recyclable foam material, and its buffering performance meets certain standard requirements. The thickness of the buffer layer is set to be 5 millimeters to 10 millimeters; a recyclable environmental protection zipper or sealing device is provided on the bag body, and its durability is not less than 500 times, and the sealing device has waterproof and dust-proof functions, adopting a sealed structure design. The test index of the sealing performance is to keep no water seepage at a depth of 1 meter underwater for 30 minutes; a near-field communication (NFC) chip is integrated in the intelligent identification layer for realizing fast interaction and information reading with intelligent devices, and the communication distance of the NFC chip is in the range of 5 centimeters to 10 centimeters.

[0056] Example 1

[0057] (1) The surface treatment of polypropylene fibers combines plasma treatment technology and chemical grafting technology. The chemical reagent is polyvinyl alcohol. The treatment power is set to 5 kW, the treatment time is 15 min, the grafted hydrophilic group is a hydroxyl group, and the grafting rate is in the range of 15% to 20%.

[0058] After plasma treatment, the surface activation of polypropylene fibers is detected. The detection method of the surface activation energy is set to be the laser-induced surface photovoltage method, and the surface activation energy should reach above 50 J / mol. At the same time, infrared spectroscopy analysis technology is used to detect and quantitatively analyze the grafted hydrophilic groups on the surface, and the detection accuracy of the grafted groups is set to 5%.

[0059] (2) The antibacterial treatment of natural fibers adopts the natural antibacterial agent chitosan impregnation process, with the mass concentration of the antibacterial agent being 10% and the treatment time being 20 min. The flame retardant treatment adopts the environmentally friendly flame retardant resorcinol bis(diphenyl phosphate) spraying process, and the addition amount of the flame retardant is 8%.

[0060] (3) Optimize the molecular structure of the degradable high-performance synthetic fiber. Use a specific catalyst, polydimethylsiloxane, and reaction conditions. Set the catalyst dosage to 5% of the mass of the high-performance synthetic fiber, the reaction temperature to 100 °C, and the reaction time to 30 min.

[0061] (4) Uniformly mix the three pretreated fibers through a mixing device. Set the mixing time to 30 min. Add an environmentally friendly lubricant during the mixing process. Set the lubricant addition amount to 5% of the total fiber mass to improve the fiber fluidity and mixing uniformity.

[0062] (5) Use an advanced weaving device to weave the mixed fibers into a bag body according to the set weaving structure parameters. At the same time, add a reinforcing layer to the middle of the bag body during the weaving process and use an environmentally friendly adhesive for bonding. The reinforcing layer is prepared by combining electrospinning technology with the uniform dispersion process of micro ceramic particles.

[0063] The weaving structure of the bag body adopts a warp and weft interlacing method. Set the warp density to 50 threads per inch and the weft density to 30 threads per inch. And use hot melt adhesive for local reinforcement at the warp and weft intersection points. The melting point of the hot melt adhesive is in the range of 120 °C to 150 °C; there is a reinforcing rib set at the edge part of the bag body. The reinforcing rib is made of a high-performance elastic material, and its tensile strength is in the range of 50 MPa to 80 MPa. And a micro strain sensor is embedded inside the reinforcing rib to monitor the stress condition of the bag body in real time; there is an anti-slip structure set at the bottom of the bag body. The anti-slip structure is made of a rubber material, and its friction coefficient is in the range of 0.8 to 1.2. And magnetic particles are added to the rubber material so that it can achieve magnetic adsorption fixation in specific transportation and storage scenarios.

[0064] Use an intelligent weaving control system. This system can monitor the parameters during the weaving process in real time, such as weaving speed, tension, and fiber distribution uniformity, and automatically adjust according to the preset quality standards. An artificial intelligence algorithm is introduced into the system. Through the learning and analysis of a large amount of historical weaving data, the prediction and early intervention of potential problems during the weaving process are realized. A machine learning algorithm is introduced to train the system according to historical weaving data. Set the number of training samples to 1000 to improve the prediction and adjustment accuracy of the system. During the training process, use data augmentation technology to expand and optimize the sample data. Set the data augmentation multiple to 5 times.

[0065] After adding the environmentally friendly adhesive, conduct an adhesive uniformity test. Use infrared spectroscopy analysis technology. The uniformity index is 90%. And test the curing performance of the adhesive. The curing time is 10 min, and the bonding strength after curing is 25 MPa.

[0066] (6) Uniformly coat the surface of the bag body with a degradable environmental protection resin material. The coating thickness is 60 microns. During the process of adding photocatalytic materials to the coating material, nanodispersion technology is adopted to ensure the uniform distribution of photocatalytic materials.

[0067] Apply ultraviolet curing technology. Set the ultraviolet irradiation intensity to 100 mW / cm 2 , the curing time is 30 seconds. At the same time, during the curing process, precise control technology of temperature and humidity is adopted. Set the temperature control to 40°C and the humidity control to 50%. During the ultraviolet curing process, a nitrogen protection atmosphere is adopted. Set the nitrogen flow rate to 6 L / min to improve the curing quality and performance of the coating. At the same time, install an online monitoring sensor in the curing equipment to monitor the key parameters during the curing process in real time, such as ultraviolet intensity and nitrogen concentration. Set the monitoring accuracy to 3%.

[0068] (7) Use printed electronics technology to make the electronic paper material into an intelligent identification layer and connect it to an external data management system through a wireless communication module to achieve information interaction and update.

[0069] (8) Conduct drying, cooling and shaping operations on the coated woven bag to ensure the quality and performance of the woven bag.

[0070] Conduct quality inspection and classification. Use automated inspection equipment. Set the inspection items to include the strength of the bag body, the quality of the coating, and the functional performance of the intelligent identification layer. Classify the woven bags into different grades according to the inspection results;

[0071] Recycle and reuse the waste generated during the processing. Set the recycling rate to reach more than 80% to achieve environmentally friendly production. After the recycled waste is classified, cleaned and reprocessed, it is reapplied to the production of woven bags or the manufacture of other related products.

[0072] Comparative Example 1: Do not add a reinforcing layer, and the rest of the process is the same as in Example 1.

[0073] Comparative Example 2: Do not perform surface pretreatment on polypropylene fibers, natural fibers, and degradable high-performance synthetic fibers, and the rest of the process is the same as in Example 1.

[0074] Comparative Example 3: Do not add an environmental protection coating, and the rest of the process is the same as in Example 1.

[0075] Performance test: Take samples of Example 1 and Comparative Examples 1-3. The sample size is 200 mm×200 mm and conduct tests.

[0076] 1. Strength test: Test the tensile strength according to the ASTM D-638 standard. Conduct inspections on Example 1 and Comparative Example 1. The results are shown in Table 1;

[0077] 2. Antibacterial test: The antibacterial rate was calculated by comparing the number of colonies of Staphylococcus aureus cultured on agar medium for 24 h using the shaking method GB / T 20944.3. Examples 1 and Comparative Example 2 were tested, and the results are shown in Table 1;

[0078] 3. Hydrophobic test: A water contact angle tester was used to measure the contact angle and rolling angle on the surfaces of Example 1 and Comparative Example 3. Five different positions were tested for each sample, and the average value was calculated. The results are shown in Table 1.

[0079] Table 1

[0080] Group Tensile strength MPa Antibacterial rate % Contact angle Rolling angle Example 1 152 92.55 162.5° 6.2° Comparative Example 1 102 - - - Comparative Example 2 - 72.1 - - Comparative Example 3 - - 103.6° 15.8°

[0081] As can be seen from Table 1, adding a reinforcing layer effectively improved the tensile strength of the woven bag, surface modification significantly enhanced the antibacterial effect, and adding an environmentally friendly coating greatly improved the hydrophobic effect of the woven bag.

[0082] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and effects.

[0083] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly woven packaging bag based on polypropylene composite material, characterized in that, It includes the following components: Bag body: It is woven by mixing polypropylene fiber, natural fiber and degradable synthetic fiber. Among them, the proportion of polypropylene fiber is 60% to 70% of the total fiber mass, the proportion of natural fiber is 20% to 30% of the total fiber mass, and the proportion of degradable synthetic fiber is 5% to 10% of the total fiber mass; Reinforcement layer: It is sandwiched in the middle of the bag body and is made of nanofiber material. The fiber diameter is in the range of 10 nanometers to 50 nanometers, and micro ceramic particles are evenly distributed in the reinforcement layer. The particle size of the ceramic particles is 1 micron to 5 microns; Environmental protection coating: It is coated on the surface of the bag body. This coating is made of degradable environmentally friendly epoxy resin material and has waterproof and anti-fouling functions. Nano titanium dioxide, a photocatalytic material, is added to the coating, which can decompose organic pollutants on the surface of the bag body under light; Intelligent identification layer: It is located on one side surface of the bag body and is made of electronic paper material. Information writing and updating can be realized through wireless communication technology, and it is used to display cargo information and transportation status.

2. The environmentally friendly woven packaging bag based on polypropylene composite material according to claim 1, characterized in that: The weaving structure of the bag body adopts the warp and weft interweaving method. The warp density is set at 40 to 60 warp ends per inch, and the weft density is set at 30 to 50 weft picks per inch. And at the intersection of warp and weft yarns, environmental protection adhesive is used for local reinforcement; Reinforcing ribs are arranged at the edge part of the bag body. The reinforcing ribs are made of elastic material, and its tensile strength is in the range of 50 MPa to 80 MPa. And a micro strain sensor is embedded inside the reinforcing ribs to be used for real-time monitoring of the force condition of the bag body; An anti-slip structure is arranged at the bottom of the bag body. This anti-slip structure is made of rubber material, and its friction coefficient is in the range of 0.8 to 1.

2. And magnetic particles are added to the rubber material so that it can achieve magnetic adsorption and fixation in transportation and storage scenarios.

3. The processing technology of the environment-friendly woven packaging bag according to any one of claims 1-2, characterized in that, It includes the following steps: Material preparation step: Prepare polypropylene fiber, natural fiber and degradable synthetic fiber in proportion, and perform pre-treatment on them respectively, including cleaning, drying, carding and surface modification operations; Fiber mixing step: Uniformly mix the three pre-treated fibers through a mixing device. The mixing time is set at 20 min to 30 min. During the mixing process, an environmentally friendly lubricant is added, and the addition amount of the lubricant is 3% to 5% of the total fiber mass; Weaving step: Use an advanced weaving device to weave the mixed fibers into a bag body according to the set weaving structure parameters. At the same time, add the reinforcement layer to the middle of the bag body during the weaving process and use environmental protection adhesive for bonding. The preparation of the reinforcement layer combines the electrospinning technology and the uniform dispersion process of micro ceramic particles; Coating treatment step: Uniformly coat the surface of the bag body with degradable environmentally friendly resin material through a spraying device. The coating thickness is set at 50 microns to 80 microns. The process of adding photocatalytic material to the coating material adopts nano dispersion technology; Steps for manufacturing the intelligent identification layer: The electronic paper material is made into the intelligent identification layer by using printed electronics technology, and it is connected to an external data management system through a wireless communication module to achieve information interaction and update; Post-treatment steps: The coated woven bag is dried, cooled, and shaped.

4. The processing technology of the environmentally friendly woven packaging bag according to claim 3, wherein: In the material preparation step, the surface of the polypropylene fiber is treated by combining plasma treatment technology and chemical grafting technology. The treatment power is set to 5 kW to 8 kW, the treatment time is 10 min to 15 min, and the grafted hydrophilic group is a hydroxyl group; The antibacterial treatment of natural fibers adopts a natural antibacterial agent impregnation process. The mass concentration of the antibacterial agent is 8% to 12%, the treatment time is 15 min to 20 min, and the flame retardant treatment adopts an environmentally friendly flame retardant spraying process. The addition amount of the flame retardant is 6% to 8% of the mass of natural fibers; The molecular structure of the biodegradable synthetic fiber is optimized. The catalyst polydimethylsiloxane and reaction conditions are used. The dosage of the catalyst polydimethylsiloxane is set to 3% to 5% of the mass of the synthetic fiber, the reaction temperature is 80°C to 100°C, and the reaction time is 30 min to 40 min.

5. The processing technology of the environmentally friendly woven packaging bag according to claim 3, wherein: In the weaving step, an intelligent weaving control system is adopted. This system can monitor the parameters during the weaving process in real time and make automatic adjustments according to the preset quality standards; an artificial intelligence algorithm is introduced into the system. Through the learning and analysis of a large amount of historical weaving data, the prediction and early intervention of potential problems during the weaving process are realized; In the coating treatment step, ultraviolet curing technology is applied. The ultraviolet irradiation intensity is set to 80 mW / cm² to 120 mW / cm², the curing time is 20 seconds to 30 seconds, and at the same time, precise control technology of temperature and humidity is adopted during the curing process. The temperature control range is set to 30°C to 40°C, and the humidity control range is set to 40% to 60%.

6. The processing technology of the environmentally friendly woven packaging bag according to claim 3, wherein: After adding the environmentally friendly adhesive, the uniformity of the adhesive is detected by using infrared spectroscopy analysis technology. The uniformity index is set to 90% to 95%, and the curing performance of the adhesive is detected. The curing time is in the range of 8 min to 12 min, and the bonding strength after curing is in the range of 20 MPa to 30 MPa.

7. The processing technology of the environmentally friendly woven packaging bag according to claim 4, wherein: After plasma treatment, the surface activation of the polypropylene fiber is detected. The detection method of the surface activation energy is set to the laser-induced surface photovoltage method, and the surface activation energy should reach more than 50 J / mol. At the same time, infrared spectroscopy analysis technology is used to detect and quantitatively analyze the surface-grafted hydrophilic groups. The detection accuracy of the grafted groups is set to 5%.

8. The processing technology of the environmentally friendly woven packaging bag according to claim 5, wherein: In the intelligent knitting control system, machine learning algorithms are introduced to train the system based on historical knitting data. Suppose the number of training samples is 1000 to improve the prediction and adjustment accuracy of the system. During the training process, data augmentation techniques are used to expand and optimize the sample data. Suppose the data augmentation multiple is 5 times. During the ultraviolet curing process, a nitrogen protection atmosphere is adopted. Suppose the nitrogen flow rate is 5 L / min to 8 L / min to improve the curing quality and performance of the coating. At the same time, an on-line monitoring sensor is installed in the curing equipment to monitor the key parameters during the curing process in real time. Suppose the monitoring accuracy is 3%.

9. The processing technology of the environment-friendly woven packaging bag according to claim 3, characterized in that: It also includes the following steps: A separable buffer layer is provided inside the woven bag. The buffer layer is made of recyclable foam material. Suppose the thickness of the buffer layer is 5 mm to 10 mm. A recyclable environmental protection zipper or sealing device is provided on the bag body. Its durability is not less than 500 times, and the sealing device has waterproof and dustproof functions. A sealing structure design is adopted, and the test index of the sealing performance is to keep no water leakage at a depth of 1 m underwater for 30 min. A near-field communication chip is integrated in the intelligent identification layer for realizing fast interaction and information reading with intelligent devices. The communication distance of the chip is in the range of 5 cm to 10 cm.

10. The processing technology of the environmental protection woven packaging bag according to any one of claims 3 to 7, characterized in that: In the post-treatment step, quality inspection and classification are carried out. Automated inspection equipment is adopted. Suppose the inspection items include the bag body strength, the coating quality, and the functional performance of the intelligent identification layer. The woven bags are divided into different grades according to the inspection results. The waste generated during the processing is recycled and reused. Suppose the recycling rate reaches more than 80% to achieve environmental protection production. After the recycled waste is classified, cleaned and reprocessed, it is reapplied to the production of woven bags or the manufacture of other related products.