Environment-friendly high-strength woven packaging bag based on polypropylene composite material and processing technology thereof

Abstract

The invention relates to an environment-friendly high-strength woven packaging bag based on a polypropylene composite material and a processing technology thereof, the environment-friendly high-strength woven packaging bag comprises the following components: a bag body which is formed by mixing and weaving 60%-70% of polypropylene fibers, 20%-30% of natural fibers and 20%-30% of degradable high-performance synthetic fibers, and the bag body is formed by mixing and weaving the polypropylene fibers, the natural fibers and the degradable high-performance synthetic fibers; the degradable high-performance synthetic fiber accounts for 5%-10%; the reinforcing layer is clamped in the middle of the bag body and made of a high-strength nanofiber material, the fiber diameter of the reinforcing layer ranges from 10 nanometers to 50 nanometers, and micro ceramic particles are evenly distributed in the reinforcing layer and used for further reinforcing the strength and abrasion resistance of the bag body; the surface of the bag body is coated with the environment-friendly coating, and the coating is made of a degradable environment-friendly resin material; according to the woven bag, the polypropylene fibers, the natural fibers and the degradable high-performance synthetic fibers are optimally proportioned, and the unique weaving structure and the reinforcing layer design are combined, so that the strength and durability of the woven bag are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of polypropylene composite materials, in particular to an environmentally friendly high-strength woven packaging bag based on polypropylene composite materials and a processing technology thereof. 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 many challenges and changes. Among many packaging materials, woven bags are widely used in various fields, and their demand continues to grow. However, traditional woven bags have a series of problems in materials and processes, and can no longer meet the modern society's requirements for high quality, high performance and environmental protection of packaging products.

[0003] Traditional woven bags are mainly made of ordinary polypropylene materials, which have limited strength and durability. When faced with some scenarios where they need to carry heavy items or experience complex transportation environments, they are prone to damage and breakage, resulting in damage to the items in the package and causing economic losses to users. For example, in the process of logistics transportation, especially in long-distance transportation and frequent handling, traditional woven bags may not be able to withstand the weight and friction of the goods, affecting the safe transportation of the 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 stringent environmental regulations and people's attention to sustainable development, the development of degradable and environmentally friendly packaging materials has become a top priority. In addition, the production process of traditional woven bags is relatively simple and backward, the energy consumption in the production process is large, 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. For example, packaging needs to provide real-time cargo information tracking functions to facilitate 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 requirements for special performance of woven bags are gradually increasing. For example, in some chemical, construction and other fields, woven bags are required to have certain waterproof, anti-fouling, antibacterial and flame retardant properties to ensure the safety and quality of the items in 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, in order to solve the many problems existing in traditional woven bags and meet the market demand for high-performance, environmentally friendly and intelligent packaging products, it is urgent to develop an environmentally friendly high-strength woven packaging bag based on polypropylene composite materials and its innovative processing technology. This new type of woven bag must not only have excellent strength and durability, and be able to adapt to various harsh conditions of use, 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] 1. Technical issues to be solved

[0009] In view of the deficiencies of the prior art, the present invention provides an environmentally friendly high-strength woven packaging bag based on a polypropylene composite material and a processing technology thereof.

[0010] (II) Technical solution

[0011] An environmentally friendly high-strength woven packaging bag based on polypropylene composite material, comprising the following components:

[0012] Bag body: It is woven from a mixture of polypropylene fiber, natural fiber and biodegradable high-performance synthetic fiber, of which polypropylene fiber accounts for 60% to 70%, natural fiber accounts for 20% to 30%, and biodegradable high-performance synthetic fiber accounts for 5% to 10%;

[0013] Reinforcement layer: sandwiched in the middle of the bag, made of high-strength nanofiber material, the fiber diameter of which 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, to further enhance the strength and wear resistance of the bag;

[0014] Environmentally friendly coating: coated on the surface of the bag, the coating is made of degradable environmentally friendly resin material, and has waterproof and anti-fouling functions. The coating contains photocatalytic material nano titanium dioxide, which can decompose organic pollutants on the surface of the bag under light and improve environmental performance;

[0015] Smart identification layer: located on one side of the bag, made of electronic paper material, it can write and update information through wireless communication technology, and is used to display cargo information and transportation status.

[0016] Furthermore, the polypropylene fiber undergoes a special surface treatment process to give its surface a microscopic rough structure, with the surface roughness parameter set to be 0.5 micrometers to 1 micrometer, and a hydrophilic group is grafted on its surface to improve its bonding strength with other fibers and hygroscopicity;

[0017] Natural fiber uses plant fiber that has been specially treated with antibacterial agents, with an antibacterial rate of more than 90%. At the same time, it has been treated with flame retardant agents, and its flame retardant performance has reached V-0 level.

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

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

[0020] The edge of the bag is provided with reinforcing ribs, which are made of high-performance elastic material with a tensile strength ranging from 50MPa to 80MPa, and a micro strain sensor is embedded inside the reinforcing ribs to monitor the stress of the bag in real time;

[0021] An anti-slip structure is provided at the bottom of the bag body. The anti-slip structure is made of a special rubber material with a friction coefficient ranging from 0.8 to 1.2. Magnetic particles are added to the rubber material, so that it can be magnetically adsorbed and fixed in specific transportation and storage scenarios.

[0022] Further, the following steps are included:

[0023] Material preparation steps: prepare polypropylene fiber, natural fiber and degradable high-performance synthetic fiber in proportion, and pre-treat them respectively, including washing, drying, opening and special surface modification operations;

[0024] Fiber mixing step: the three pre-treated fibers are uniformly mixed by a special mixing device, the mixing time is set to 20 minutes to 30 minutes, and an environmentally friendly lubricant is added during the mixing process, the amount of the lubricant is set to 3% to 5%, so as to improve the fluidity and mixing uniformity of the fibers;

[0025] Weaving steps: using advanced weaving equipment, weaving the mixed fibers into a bag body according to the set weaving structure parameters, and adding a reinforcement layer to the middle of the bag body during the weaving process, and bonding it with an environmentally friendly adhesive. The preparation of the reinforcement layer combines electrospinning technology with a uniform dispersion process of micro ceramic particles;

[0026] Coating treatment steps: The degradable environmentally friendly resin material is evenly coated on the surface of the bag through special spraying equipment. The coating thickness is set to 50 microns to 80 microns. The process of adding photocatalytic material to the coating material adopts nano-dispersion technology to ensure the uniform distribution of the photocatalytic material.

[0027] Smart identification layer production steps: using printed electronic technology to make electronic paper materials into smart identification layers, and connecting them to external data management systems through wireless communication modules to achieve information interaction and update;

[0028] Post-processing steps: Dry, cool and shape the coated woven bags to ensure the quality and performance of the woven bags.

[0029] Furthermore, in the material preparation step, the polypropylene fiber is surface treated by combining plasma treatment technology with chemical grafting technology, the treatment power is set to 5 kW to 8 kW, the treatment time is set to 10 min to 15 min, the grafted hydrophilic group is a hydroxyl group, and the grafting rate is 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%, and the treatment time is 15min to 20min. The flame retardant treatment adopts the environmentally friendly flame retardant spraying process, and the addition amount of the flame retardant is 6% to 8%;

[0031] The molecular structure of the degradable high-performance synthetic fiber is optimized by using a specific catalyst and reaction conditions, with the catalyst dosage being 3% to 5%, the reaction temperature being 80°C to 100°C, and the reaction time being 30min to 40min.

[0032] Furthermore, in the weaving step, an intelligent weaving control system is used, which can monitor the parameters of the weaving process in real time, such as weaving speed, tension, and fiber distribution uniformity, and automatically adjust according to the preset quality standards. The system introduces artificial intelligence algorithms to predict and intervene in potential problems in the weaving process through learning and analyzing a large amount of historical weaving data;

[0033] In the coating treatment step, UV curing technology is applied, and the UV irradiation intensity is set to 80mW / cm 2 Up to 120mW / cm 2 The curing time is 20 seconds to 30 seconds. At the same time, precise temperature and humidity control technology is adopted during the curing process. The temperature control range is 30℃ to 40℃, and the humidity control range is 40% to 60%.

[0034] Furthermore, after adding the environmentally friendly adhesive, the uniformity of the adhesive is tested by using infrared spectroscopy analysis technology, with the uniformity index set at 90% to 95%, and the curing performance of the adhesive is tested, with the curing time set at 8 minutes to 12 minutes and the bonding strength after curing set at 20 MPa to 30 MPa.

[0035] Furthermore, after the plasma treatment, the polypropylene fiber is subjected to surface activation detection. The surface activation energy detection method is assumed to be the laser induced surface photovoltage method, and the surface activation energy should be 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. The detection accuracy of the grafted groups is assumed to be 5%.

[0036] Furthermore, in the intelligent weaving control system, a machine learning algorithm is introduced to train the system based on historical weaving data, and the number of training samples is set to 1,000 to improve the prediction and adjustment accuracy of the system. During the training process, data enhancement technology is used to expand and optimize the sample data, and the data enhancement multiple is set to 5 times;

[0037] During the UV curing process, a nitrogen protective atmosphere is adopted, and the nitrogen flow rate is set at 5L / min to 8L / 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 monitor the key parameters of the curing process in real time, such as UV intensity and nitrogen concentration. The monitoring accuracy is set to 3%.

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

[0039] The bag body is provided with a recyclable environmentally friendly zipper or sealing device, which can be used for no less than 500 times. The sealing device is waterproof and dustproof, and adopts a special sealing structure design. The test index of the sealing performance is to maintain no water leakage for 30 minutes at a depth of 1 meter underwater.

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

[0041] Furthermore, in the post-processing step, quality inspection and classification are carried out, using automated inspection equipment, with inspection items including bag body strength, coating quality, and functional performance of the smart identification layer, and woven bags are classified into different grades according to the inspection results;

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

[0043] (III) Beneficial technical effects

[0044] The present invention adopts an optimized ratio of polypropylene fiber, natural fiber and degradable high-performance synthetic fiber, and combines a unique weaving structure and reinforcement layer design to greatly improve the strength and durability of the woven bag, so that it can adapt to various complex usage environments and reduce cargo losses and packaging replacement costs caused by packaging damage.

[0045] The present invention achieves excellent environmental protection performance of the woven bag by selecting degradable materials and adding photocatalytic materials to the coating. It can be quickly degraded into harmless substances in the natural environment, and at the same time decompose organic pollutants under light, reducing negative impacts on the environment and meeting the requirements of sustainable development.

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

[0047] The present invention performs special surface treatment on polypropylene fibers and natural fibers, thereby giving the woven bag special properties such as good bonding strength, hygroscopicity, antibacterial properties and flame retardancy, thereby ensuring the safety and quality of packaged items and improving applicability in different scenarios.

[0048] The present invention ensures the stability and consistency of product quality and improves production efficiency through innovative processing technology, including fiber pretreatment, intelligent weaving control, ultraviolet curing technology and precise process parameter control, while achieving waste recycling and reuse, reducing production costs and realizing environmentally friendly production.

[0049] The present invention provides a detachable buffer layer inside the woven bag and adopts an environmentally friendly zipper or sealing device with a special sealing structure, thereby enhancing the protection performance of the items in the package, improving the buffer effect and sealing performance, and meeting the needs of long-term repeated use.

[0050] By integrating the 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, thereby promoting the sustainable development of related industries. DETAILED DESCRIPTION

[0051] Bag body: It is woven from a mixture of polypropylene fiber, natural fiber and degradable high-performance synthetic fiber, of which polypropylene fiber accounts for 60% to 70%, natural fiber accounts for 20% to 30%, and degradable high-performance synthetic fiber accounts for 5% to 10%.

[0052] Reinforcement layer: sandwiched in the middle of the bag, it is made of high-strength nanofiber material with a fiber diameter ranging from 10 nanometers to 50 nanometers. Micro ceramic particles are evenly distributed in the reinforcement layer, and the particle size of the ceramic particles is 1 micron to 5 microns, which is used to further enhance the strength and wear resistance of the bag.

[0053] Environmentally friendly coating: Coated on the surface of the bag, the coating is made of degradable environmentally friendly resin material and has waterproof and anti-fouling functions. Photocatalytic material nano titanium dioxide is added to the coating, which can decompose organic pollutants on the surface of the bag under light and improve environmental protection performance.

[0054] Smart identification layer: located on one side of the bag, made of electronic paper material, it can write and update information through wireless communication technology, and is used to display cargo information and transportation status.

[0055] A detachable 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 5 mm to 10 mm. A recyclable environmentally friendly zipper or sealing device is arranged on the bag body, and its durability is not less than 500 times. The sealing device has waterproof and dustproof functions and adopts a special sealing structure design. The test index of the sealing performance is to remain watertight at a depth of 1 meter underwater for 30 minutes. A near-field communication (NFC) chip is integrated in the smart identification layer to achieve rapid interaction and information reading with smart devices. The communication distance of the NFC chip is within the range of 5 cm to 10 cm.

[0056] Example 1

[0057] (1) The surface of polypropylene fiber is treated by combining plasma treatment technology with chemical grafting technology. The chemical reagent is polyvinyl alcohol. The treatment power is 5 kW, the treatment time is 15 minutes, 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 polypropylene fiber is subjected to surface activation detection. The surface activation energy detection method is assumed to be the laser induced surface photovoltage method, and the surface activation energy should be 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. The detection accuracy of the grafted groups is assumed to be 5%.

[0059] (2) The antibacterial treatment of natural fibers adopts the natural antibacterial agent chitosan impregnation process, the mass concentration of the antibacterial agent is 10%, and the treatment time is 20 minutes. 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) The molecular structure of the degradable high-performance synthetic fiber was optimized by using a specific catalyst polydimethylsiloxane and reaction conditions, with the amount of the catalyst being 5% of the mass of the high-performance synthetic fiber, the reaction temperature being 100°C, and the reaction time being 30 min.

[0061] (4) The three pretreated fibers are uniformly mixed by a special mixing device. The mixing time is set to 30 minutes. An environmentally friendly lubricant is added during the mixing process. The amount of the lubricant added is set to 5% of the total fiber mass to improve the fluidity and mixing uniformity of the fibers.

[0062] (5) Advanced weaving equipment is used to weave the mixed fibers into a bag body according to the set weaving structure parameters. At the same time, a reinforcement layer is added to the middle of the bag body during the weaving process and bonded with an environmentally friendly adhesive. The preparation of the reinforcement layer is achieved by combining electrospinning technology with a uniform dispersion process of micro-ceramic particles.

[0063] The weaving structure of the bag body adopts a special warp and weft interweaving method, with a warp density of 50 yarns / inch and a weft density of 30 yarns / inch, and hot melt adhesive is used for local reinforcement at the intersection of the warp and weft yarns. The melting point of the hot melt adhesive is in the range of 120°C to 150°C; reinforcing ribs are provided at the edge of the bag body. The reinforcing ribs are made of high-performance elastic material with a tensile strength in the range of 50MPa to 80MPa, and micro strain sensors are embedded in the reinforcing ribs for real-time monitoring of the stress conditions of the bag body; an anti-slip structure is provided at the bottom of the bag body. The anti-slip structure is made of a special rubber material with a friction coefficient in the range of 0.8 to 1.2, and magnetic particles are added to the rubber material to enable it to be magnetically adsorbed and fixed in specific transportation and storage scenarios.

[0064] An intelligent weaving control system is used, which can monitor the parameters of the weaving process in real time, such as weaving speed, tension, and fiber distribution uniformity, and automatically adjust according to the preset quality standards. Artificial intelligence algorithms are introduced into the system to predict and intervene in potential problems in the weaving process in advance by learning and analyzing a large amount of historical weaving data. A machine learning algorithm is introduced to train the system based on historical weaving data, with the number of training samples set to 1,000 to improve the prediction and adjustment accuracy of the system. During the training process, data enhancement technology is used to expand and optimize the sample data, and the data enhancement multiple is set to 5 times.

[0065] After adding the environmentally friendly adhesive, the uniformity of the adhesive was tested using infrared spectroscopy analysis technology, and the uniformity index was 90%. The curing performance of the adhesive was also tested, with a curing time of 10 minutes and a bonding strength of 25 MPa after curing.

[0066] (6) The degradable and environmentally friendly resin material is evenly coated on the surface of the bag through special spraying equipment, and the coating thickness is 60 microns. The process of adding the photocatalytic material to the coating material adopts nano-dispersion technology to ensure the uniform distribution of the photocatalytic material.

[0067] Apply UV curing technology and set the UV irradiation intensity to 100mW / cm 2 The curing time is 30 seconds. During the curing process, precise temperature and humidity control technology is used, with the temperature controlled at 40°C and the humidity controlled at 50%. During the UV curing process, a nitrogen protective atmosphere is used, with a nitrogen flow rate of 6L / 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 monitor key parameters in the curing process in real time, such as UV intensity and nitrogen concentration, with a monitoring accuracy of 3%.

[0068] (7) Printed electronic technology is used to make electronic paper materials into an intelligent identification layer, and it is connected to an external data management system through a wireless communication module to achieve information interaction and update.

[0069] (8) Dry, cool and shape the coated woven bags to ensure their quality and performance.

[0070] Carry out quality inspection and classification, use automated testing equipment, set up testing items including bag strength, coating quality, and functional performance of the intelligent identification layer, and classify woven bags into different grades based on the test results;

[0071] The waste generated during the processing is recycled and reused, and the recycling rate is set to reach more than 80% to achieve environmentally friendly production. The recycled waste is classified, cleaned and reprocessed, and then reused in the production of woven bags or other related products.

[0072] Comparative Example 1: No reinforcement layer was added, and the rest of the process was the same as in Example 1.

[0073] Comparative Example 2: No surface pretreatment is performed on the polypropylene fiber, natural fiber and degradable high-performance synthetic fiber, and the remaining processes are the same as those in Example 1.

[0074] Comparative Example 3: No environmentally friendly coating is added, and the remaining processes are the same as in Example 1.

[0075] Performance test: samples of Example 1 and Comparative Examples 1 to 3 were taken, with a sample size of 200 mm×200 mm, and tested.

[0076] 1. Strength test: The tensile strength was tested according to ASTM D-638 standard. Example 1 and Comparative Example 1 were tested. The results are shown in Table 1.

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

[0078] 3. Hydrophobic test: The contact angle and rolling angle of the surfaces of Example 1 and Comparative Example 3 were tested using a water drop angle tester. Five different positions were taken for each sample and the average value was calculated. The results are shown in Table 1.

[0079] Table 1

[0080]

[0081]

[0082] As can be seen from Table 1, the addition of a reinforcement layer effectively improves the tensile strength of the woven bag, the surface modification greatly enhances the antibacterial effect, and the addition of an environmentally friendly coating greatly improves the hydrophobic effect of the woven bag.

[0083] 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 changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and effectiveness.

[0084] 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. Environmentally friendly high-strength woven packaging bag based on polypropylene composite material, characterized in that: It includes the following components: Bag body: It is woven from a mixture of polypropylene fiber, natural fiber and biodegradable high-performance synthetic fiber, of which polypropylene fiber accounts for 60% to 70% of the total fiber mass, natural fiber accounts for 20% to 30% of the total fiber mass, and biodegradable high-performance synthetic fiber accounts for 5% to 10% of the total fiber mass; Reinforcement layer: sandwiched in the middle of the bag, made of high-strength nanofiber material, the fiber diameter of which is in the range of 10 nanometers to 50 nanometers, and micro ceramic particles are evenly distributed in the reinforcement layer, and the particle size of the ceramic particles is 1 micron to 5 microns; Environmentally friendly coating: coated on the surface of the bag, the coating is made of biodegradable environmentally friendly epoxy resin material, and has waterproof and anti-fouling functions. The coating contains photocatalytic material nano titanium dioxide, which can decompose organic pollutants on the surface of the bag under light; Smart identification layer: located on one side of the bag, made of electronic paper material, it can write and update information through wireless communication technology, and is used to display cargo information and transportation status.

2. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to claim 1, characterized in that: The woven structure of the bag body adopts a special warp and weft interweaving method, with a warp density of 40 to 60 yarns / inch and a weft density of 30 to 50 yarns / inch, and an environmentally friendly adhesive is used at the intersection of the warp and weft yarns for local reinforcement; The edge of the bag is provided with reinforcing ribs, which are made of high-performance elastic material with a tensile strength ranging from 50MPa to 80MPa, and a micro strain sensor is embedded inside the reinforcing ribs to monitor the stress of the bag in real time; An anti-slip structure is provided at the bottom of the bag body. The anti-slip structure is made of a special rubber material with a friction coefficient ranging from 0.8 to 1.

2. Magnetic particles are added to the rubber material, so that it can be magnetically adsorbed and fixed in specific transportation and storage scenarios.

3. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to claim 1, characterized in that: The following steps are involved: Material preparation steps: prepare polypropylene fiber, natural fiber and degradable high-performance synthetic fiber in proportion, and pre-treat them respectively, including washing, drying, opening and special surface modification operations; Fiber mixing step: the three pre-treated fibers are uniformly mixed by a special mixing device, the mixing time is set to 20 minutes to 30 minutes, and an environmentally friendly lubricant is added during the mixing process, and the amount of the lubricant added is set to 3% to 5% of the total mass of the fibers; Weaving steps: using advanced weaving equipment, weaving the mixed fibers into a bag body according to the set weaving structure parameters, and adding a reinforcement layer to the middle of the bag body during the weaving process, and bonding it with an environmentally friendly adhesive. The preparation of the reinforcement layer combines electrospinning technology with a uniform dispersion process of micro ceramic particles; Coating treatment steps: The degradable environmentally friendly resin material is evenly coated on the surface of the bag through a special spraying device, and the coating thickness is set to 50 microns to 80 microns. The process of adding photocatalytic material to the coating material adopts nano-dispersion technology; Smart identification layer production steps: using printed electronic technology to make electronic paper materials into smart identification layers, and connecting them to external data management systems through wireless communication modules to achieve information interaction and update; Post-processing steps: drying, cooling and shaping the coated woven bags.

4. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to claim 3 is characterized in that: In the material preparation step, the polypropylene fiber is surface treated by combining plasma treatment technology with chemical grafting technology, the treatment power is set to 5 kW to 8 kW, the treatment time is set to 10 min to 15 min, and the grafted hydrophilic group is a hydroxyl group; The antibacterial treatment of natural fibers adopts the natural antibacterial agent impregnation process, the mass concentration of the antibacterial agent is 8% to 12%, and the treatment time is 15min to 20min. The flame retardant treatment adopts the environmentally friendly flame retardant spraying process, and the addition amount of the flame retardant is 6% to 8% of the mass of the natural fiber; The molecular structure of the degradable high-performance synthetic fiber is optimized by using a specific catalyst and reaction conditions, with the catalyst dosage being 3% to 5% of the mass of the synthetic fiber, the reaction temperature being 80°C to 100°C, and the reaction time being 30min to 40min.

5. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to claim 3, characterized in that: In the weaving process, an intelligent weaving control system is used, which can monitor the parameters of the weaving process in real time, such as weaving speed, tension, and fiber distribution uniformity, and automatically adjust according to the preset quality standards; artificial intelligence algorithms are introduced into the system to predict and intervene in potential problems in the weaving process in advance through learning and analyzing a large amount of historical weaving data; In the coating treatment step, UV curing technology is applied, and the UV irradiation intensity is set to 80mW / cm 2 Up to 120mW / cm 2 The curing time is 20 seconds to 30 seconds. At the same time, precise temperature and humidity control technology is adopted during the curing process. The temperature control range is 30℃ to 40℃, and the humidity control range is 40% to 60%.

6. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to claim 3, characterized in that: After adding the environmentally friendly adhesive, the uniformity of the adhesive is tested using infrared spectroscopy analysis technology, with the uniformity index set at 90% to 95%. The curing performance of the adhesive is also tested, with the curing time set at 8 minutes to 12 minutes and the bonding strength after curing set at 20 MPa to 30 MPa.

7. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to claim 4, characterized in that: After plasma treatment, the polypropylene fiber is subjected to surface activation detection. The surface activation energy detection method is assumed to be the laser induced surface photovoltage method, and the surface activation energy should be 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. The detection accuracy of the grafted groups is assumed to be 5%.

8. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to claim 5, characterized in that: In the intelligent weaving control system, a machine learning algorithm is introduced to train the system based on historical weaving data. The number of training samples is set to 1,000 to improve the prediction and adjustment accuracy of the system. During the training process, data enhancement technology is used to expand and optimize the sample data. The data enhancement multiple is set to 5 times. During the UV curing process, a nitrogen protective atmosphere is used, and the nitrogen flow rate is set at 5L / min to 8L / 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 monitor the key parameters of the curing process in real time, and the monitoring accuracy is set to 3%.

9. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to any one of claims 1 to 2, characterized in that: A detachable buffer layer is arranged inside the woven bag, the buffer layer is made of recyclable foam material, and the thickness of the buffer layer is 5 mm to 10 mm; The bag body is equipped with a recyclable environmentally friendly zipper or sealing device, which can be used for no less than 500 times. The sealing device is waterproof and dustproof, and adopts a special sealing structure design. The test index of the sealing performance is to remain watertight for 30 minutes at a depth of 1 meter underwater. A near-field communication (NFC) chip is integrated in the smart identification layer to enable fast interaction and information reading with smart devices. The communication distance of the NFC chip is within the range of 5 cm to 10 cm.

10. The environmentally friendly high-strength woven packaging bag based on polypropylene composite material according to any one of claims 3 to 7, characterized in that: In the post-processing step, quality inspection and classification are carried out, and automated testing equipment is used. The test items include bag strength, coating quality, and functional performance of the intelligent identification layer. The woven bags are classified into different grades according to the test results. The waste generated during the processing is recycled and reused, with a recycling rate of more than 80% to achieve environmentally friendly production; the recycled waste is sorted, cleaned and reprocessed, and then reused in the production of woven bags or other related products.

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