Manufacturing process method of duty suit based on high-strength molecular polyethylene material

Abstract

The invention relates to a process method for manufacturing duty clothing based on a high-strength molecular polyethylene material, and belongs to the technical field of duty clothing. The ceramic composite sheet is arranged in an interlayer of a neckline of the on-duty suit, and the ceramic composite sheet is fixed through an inlaying technology and used for forming a neck protection area; wherein the high molecular weight polyethylene fiber composite material is formed by compounding a graphene composite fabric outer layer, an ultra-high molecular weight polyethylene fiber non-woven cloth middle layer, a breathable functional knitted fabric inner layer and a thermoplastic polyurethane adhesive film bonding layer. According to the manufacturing process method of the on-duty clothes based on the high-strength molecular polyethylene material, the neckline is integrated with the ceramic composite sheet, the protection blind area neck of traditional stab-resistant clothes is protected in a targeted mode, the burden and inconvenience caused by independently wearing neck protection equipment are avoided, protection is achieved when the clothes are worn, and extra wearing steps are not needed; and the police speed and the ability to deal with sudden threats are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of duty uniform technology, specifically a manufacturing process for duty uniforms based on high-strength polyethylene material. Background Technology

[0002] In law enforcement operations, officers often face deadly threats from sharp objects such as knives and daggers. Traditional stab-proof vests, as the primary personal protective equipment, generally have the following limitations: First, the protection area is mainly concentrated on the chest and abdomen, lacking effective coverage for critical and vulnerable areas such as the neck. Existing neck protection equipment (such as independent stab-proof collars) suffers from problems such as inconvenience in wearing, strong pressure, and easy fatigue. Second, traditional stab-proof vests have complex structures and take a long time to put on, making it difficult to meet the needs of rapid response and dealing with sudden dangers, resulting in low actual usage frequency and increased safety risks. Third, in pursuit of protective performance, high-density metals or hard composite materials are often used, resulting in poor breathability, high heat load, and rigid materials, which seriously affect wearing comfort, body flexibility, and motor function, and can easily accelerate muscle fatigue with long-term wear.

[0003] Therefore, there is an urgent need to develop a new type of duty uniform that integrates high-efficiency protection, comfortable wear, convenience and flexibility, and concealment, so that the protective equipment can be seamlessly integrated into daily duties, ensuring the safety of law enforcement personnel without affecting their law enforcement efficiency and freedom of action. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a manufacturing process for duty uniforms based on high-strength polyethylene material, aiming to solve the technical problems of traditional protective equipment, such as numerous blind spots, inconvenience in wearing, and poor comfort. Its core lies in achieving a balance between protective performance, wearing comfort, and everyday practicality through material innovation and structural design.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The manufacturing process of duty uniforms based on high-strength polyethylene material includes:

[0007] The main garment fabric is made of ultra-high molecular weight polyethylene fiber composite material;

[0008] A ceramic composite sheet is installed in the collar layer of the duty uniform, and the ceramic composite sheet is fixed by an inlay process to form a neck protection area;

[0009] And a breathable fabric lining layer laminated with the ultra-high molecular weight polyethylene fiber composite material;

[0010] Among them, the high molecular weight polyethylene fiber composite material is composed of a graphene composite fabric outer layer, an ultra-high molecular weight polyethylene fiber non-woven fabric middle layer, a breathable functional knitted fabric inner layer, and a thermoplastic polyurethane film bonding layer.

[0011] The graphene composite fabric outer layer is used to improve the overall abrasion and cut resistance of the main garment fabric;

[0012] The ultra-high molecular weight polyethylene fiber nonwoven fabric interlayer is used to improve the overall strength, flexibility and impact resistance of the main garment fabric;

[0013] The breathable functional knitted inner layer is used to improve the overall comfort and breathability of the main garment fabric;

[0014] Thermoplastic polyurethane film bonding layer is used to achieve strong interlayer bonding and breathable micropores;

[0015] It also includes the following preparation steps:

[0016] S1. Protective fabric prefabrication: Ultra-high strength polyethylene fibers are made into non-woven fabric or woven fabric, and then combined with thermoplastic resin film through hot pressing process to form flexible ultra-high molecular weight polyethylene fiber composite material roll.

[0017] S2. Collar protection unit preparation: A prefabricated ceramic composite sheet with a specific shape and size is embedded into a piece of ultra-high molecular weight polyethylene fiber composite material base fabric that matches the shape of the collar by wrapping it with a high-strength flexible adhesive, thus forming a collar protection unit prefabricated part.

[0018] S3. Ultrasonic-assisted microfluidic impregnation lamination: The ultra-high molecular weight polyethylene fiber composite roll obtained in S1 is used as the outer layer and aligned and overlapped with the selected breathable fabric lining roll. A layer of adhesive suspension containing heat-responsive microcapsules is uniformly sprayed in the middle. Then, it is sent into an ultrasonic microfluidic laminator and treated for 70 seconds at a frequency of 28 kHz, a temperature of 95℃, and a pressure of 0.5 MPa. The ultrasound causes the adhesive to be evenly distributed and penetrate along the fiber interface. The microcapsules rupture when heated and release the adhesive components, achieving a strong interlayer bond under mild pressure. At the same time, a continuous breathable microchannel is formed, forming a composite fabric that combines protection and breathability.

[0019] S4. Cutting and Integration: Based on the garment pattern, cut out each piece of clothing from the composite fabric obtained in S3; precisely position and sew or high-frequency weld the prefabricated neck protection unit prepared in S2 to the corresponding interlayer position of the front neckline piece.

[0020] S5. Sewing and shaping: The processed garment pieces, including the front piece with the integrated collar protection unit, are spliced ​​and sewn together according to conventional garment sewing techniques to create a garment with the appearance of everyday duty uniform.

[0021] S6. Finishing: Clean, iron, and inspect the finished duty uniforms to ensure that the protective units are in the correct position, the stitching is secure, and the overall garment meets the requirements for machine washing.

[0022] Furthermore, the collar has a foldable structure, with a folded-down state and a stand-up state. In the stand-up state, the ceramic composite sheet covers the front and side areas of the neck. The ceramic composite sheet is composed of at least one of alumina, silicon carbide, or boron carbide ceramics combined with a polymer matrix.

[0023] Furthermore, in the shoulder, elbow, and knee areas of the duty uniform, which are prone to wear and require critical protection, the fabric density, number of layers, and weight of the ultra-high molecular weight polyethylene fiber composite material are locally enhanced.

[0024] Furthermore, the breathable fabric lining is made of knitted cotton, functional fiber fabric with moisture-wicking and quick-drying functions, or other textile materials with moisture-wicking functions.

[0025] Furthermore, the duty uniform can be machine washed as a whole, and after at least 20 standard machine wash cycles, the stab resistance of its key parts retains no less than 90% of the initial value.

[0026] Furthermore, the embedding process in S2 specifically involves coating or attaching a ring of the flexible adhesive around the edge of the ceramic composite sheet, then placing it in a predetermined groove or marked area on the ultra-high molecular weight polyethylene fiber composite material base fabric, and then covering it with another layer of thin ultra-high molecular weight polyethylene fabric or mesh fabric. The adhesive is then cured by hot pressing, firmly encapsulating the ceramic composite sheet within the fiber base fabric.

[0027] Furthermore, the microcapsule adhesive in S3 has a particle size range of 10-50 μm, its shell is thermoplastic polyurethane, and its core material is a mixture of epoxy resin and curing agent.

[0028] Furthermore, the ultrasonic frequency of the ultrasonic microfluidic composite machine in S3 is 20-40 kHz, the processing temperature is 80℃-110℃, the processing pressure is 0.3-1.0 MPa, and the processing time is 40-140 seconds.

[0029] Furthermore, the local reinforcement of the shoulder and elbow in S4 is achieved by attaching one or more layers of small-area ultra-high molecular weight polyethylene fiber reinforcement patches to the back of the composite fabric in the corresponding area before cutting, and fixing them by sewing or hot pressing.

[0030] Compared with the prior art, the present invention provides a manufacturing process for duty uniforms based on high-strength polyethylene material, which has the following beneficial effects:

[0031] 1. The manufacturing process of duty uniform based on high-strength polyethylene material integrates a ceramic composite sheet at the collar to specifically protect the neck, a blind spot of traditional stab-proof vests. The compact structure avoids the burden and inconvenience of wearing separate neck protection equipment. By embedding high-level protective functions into daily duty uniforms, "wearing the clothes is protection" is achieved without additional wearing steps, which greatly improves the speed of police response and the ability to deal with sudden threats.

[0032] 2. The manufacturing process of duty uniforms based on high-strength polyethylene materials adopts a laminated structure of high-strength polyethylene fibers and breathable fabrics, which significantly improves the breathability, flexibility and overall wearing comfort of the clothing while ensuring protective power, reduces heat load and movement restriction, and is suitable for wearing for long-term, high-intensity duty.

[0033] 3. The manufacturing process of duty uniforms based on high-strength polyethylene materials ensures that the clothing design conforms to daily dressing habits and duty requirements. It is reinforced in easily worn areas, making it highly durable and machine washable. This greatly improves the practicality and maintainability of the product, and reduces the threshold for use and life cycle costs. Attached Figure Description

[0034] Fig. 1 This is a flowchart illustrating the manufacturing process of duty uniforms based on high-strength polyethylene material according to the present invention.

[0035] Fig. 2 This is a flowchart of the ultrasonic-assisted microfluidic impregnation and composite process in the preparation process of the duty uniform based on high-strength polyethylene material of the present invention.

[0036] Fig. 3 This is a schematic diagram of the manufacturing process of duty uniforms based on high-strength polyethylene material according to the present invention. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] Please see Figs. 1-2 The manufacturing process of duty uniforms based on high-strength polyethylene material in this embodiment is no different from that of regular police duty uniforms in daily wear, but it has a built-in highly efficient flexible anti-stab structure.

[0040] The material preparation in this embodiment includes:

[0041] Main protective material: Stack the main protective material on top of a layer of low-melting-point copolyamide (CoPA) hot melt adhesive film (approximately 25 g / m²), and set aside. The main protective materials are shown in Table 1.

[0042]

[0043] Ceramic composite sheet: Prepare several polygonal alumina ceramic sheets (Al2O3 content ≥95%) with a thickness of 3mm and a shape that conforms to the curvature of the front and sides of the human neck. Leave an edge of about 2mm for each sheet.

[0044] Lining material: Knitted cotton fabric with a weight of 180 g / m² is selected, which has good moisture absorption, breathability and skin feel.

[0045] Adhesives and accessories: Prepare a polyurethane (PU)-based flexible structural adhesive for embedding ceramic tiles. Prepare a polyester (PET) hot melt adhesive web with a basis weight of 30 g / m² for lamination. Prepare an ultra-high molecular weight polyethylene fiber woven fabric patch with an areal density of 100 g / m² for local reinforcement.

[0046] The parameters of the ceramic composite sheet and the inner lining material are shown in Table 2.

[0047]

[0048] The preparation steps in this embodiment include:

[0049] S1. Pre-fabrication of protective fabric:

[0050] The stacked ultra-high molecular weight polyethylene (UHMWPE) nonwoven fabric and CoPA hot melt adhesive film are fed into a two-roller hot press. The press is subjected to a temperature of 125°C and a pressure of 0.8 MPa for 40 seconds, allowing the adhesive film to completely melt and impregnate the fibers. After cooling, a flexible UHMWPE fiber composite roll (A) is formed. This material possesses both excellent cut resistance and a certain degree of bending flexibility.

[0051] S2. Preparation of collar protection unit:

[0052] Take a piece of composite material A that matches the shape and size of the collar of the duty uniform as the base fabric. On the base fabric, corresponding to the neck protection area, use a laser to cut a shallow groove (approximately 1mm deep). Apply PU structural adhesive evenly to the edge binding area of ​​the alumina ceramic sheet. Then, precisely place the adhesive-coated ceramic sheet into the groove of the base fabric.

[0053] A very thin sheet of ultra-high molecular weight polyethylene fiber mesh (area density approximately 50 g / m²) is placed over the ceramic sheet and the base fabric. This is then placed on a hot press plate and hot-pressed at 100°C and 0.5 MPa for 90 seconds to cure the PU adhesive. This securely sandwiches the ceramic sheet between the two fiber layers, forming a prefabricated collar protection unit. This structure not only secures the ceramic sheet but also cushions impacts and prevents the ceramic from shattering and flying away.

[0054] S3, Ultrasonic-assisted microfluidic infiltration composite:

[0055] The composite material roll A (protective outer layer) was aligned with the knitted cotton inner lining roll, and a layer of adhesive suspension containing thermally responsive microcapsules (microcapsule particle size approximately 30 μm) was uniformly sprayed between them. The roll was then fed into an ultrasonic microfluidic laminator and treated for 70 seconds at a frequency of 28 kHz, a temperature of 95 °C, and a pressure of 0.5 MPa. The ultrasound caused the adhesive to distribute evenly and penetrate along the fiber interface. The microcapsules ruptured upon heating, releasing the adhesive components, achieving a strong interlayer bond under gentle pressure, while simultaneously forming continuous, breathable microchannels.

[0056] S4. Cutting and Integration:

[0057] (1) Based on the standard police summer duty uniform pattern, use an automatic cutting bed to cut out all garment pieces such as the front piece, back piece, and sleeve piece from the composite fabric B.

[0058] (2) Local reinforcement: On the back of the shoulder area of ​​the cut left front piece, right front piece, and back piece, as well as the elbow area of ​​the two sleeve pieces, a pre-cut ultra-high molecular weight polyethylene woven fabric patch is attached using a high-frequency welding machine.

[0059] (3) Place the prefabricated collar protection unit made in step S2 at the predetermined position of the collar interlayer of the front piece (i.e., the area below the collar fold line and above the collarbone), and sew it along its edge with a high-strength overlock sewing machine to ensure that it will not move inside the garment.

[0060] S5. Sewing and shaping:

[0061] All the processed garment pieces (including the front, back, and sleeve pieces with integrated neckline units and partial patches) are joined together, sleeves are attached, collars are attached, and edges are finished using an industrial sewing machine according to conventional garment manufacturing processes. It is particularly important to note that the neckline in this embodiment is designed to be foldable. When sewing the collar, ensure that when the collar is folded down, the built-in ceramic composite sheet is completely hidden within the interlayer, not visible, and has a smooth feel; when the collar is upright, the ceramic sheet covers the front and sides of the neck precisely.

[0062] S6. Post-processing:

[0063] Press the sewn garments to ensure a smooth appearance. Conduct a final inspection to check that all seams are secure, protective panels are accurately positioned, and garment sizes are correct. Fold and package the finished products.

[0064] The parameters of the ultrasound-assisted microfluidic infiltration composite process are shown in Table 3.

[0065]

[0066] The product performance test in this embodiment includes:

[0067] The duty uniforms produced in this embodiment were subjected to the following tests:

[0068] Stab resistance test (based on GA 68-2019 "Police Stab-Resistant Vest"): Dynamic stab tests were conducted on the chest area (area B using composite fabric) and the collar in the upright position. Test results showed that both areas met the protection level specified in the standard, effectively preventing penetration by the test knife.

[0069] Comfort test: In an environmental chamber with a temperature of 25°C and humidity of 65%, subjects wore this duty uniform and performed simulated duty movements (such as jogging, stretching, and turning). Compared with wearing the same ordinary duty uniform without a protective layer, subjects reported a significant reduction in stuffiness and constriction, and the lining felt less damp after sweating, proving that the laminated structure effectively improved breathability and heat dissipation.

[0070] Durability and Machine Washing Tests: The garments were machine washed according to GB / T 8629-2017 "Testing Procedures for Household Washing and Drying of Textiles". After 25 wash-dry cycles, the puncture resistance test was repeated. The results showed that the puncture resistance retention rate of key areas was over 92%. The garments showed no irreversible wrinkles or deformations, no unraveling of seams, and no displacement of protective units.

[0071] It should be noted that ultrasound-assisted microfluidic impregnation lamination is a novel textile composite technology that combines the cavitation effect of ultrasound with precise microfluidic transport. Ultrasound waves act between fiber layers, generating micro-vibrations and cavitation effects, opening up the microstructure of the fiber surface and promoting adhesive penetration. The microfluidic system, through a pre-set microchannel network, achieves directional and quantitative delivery of the adhesive, avoiding pore blockage caused by traditional impregnation or hot pressing. This process can achieve high-strength bonding at lower temperatures and pressures, maximizing the preservation of the original mechanical properties of the fibers and the breathability of the fabric. It is suitable for manufacturing protective clothing with strict requirements for lightweight, high breathability, and interfacial bonding strength.

[0072] Example 2:

[0073] The main difference between the modified version and Example 1 is as follows:

[0074] Ceramic material: The ceramic plate of the collar protection unit is made of lighter and harder silicon carbide (SiC) ceramic.

[0075] Lining material: Replace knitted cotton with a modified polyester fiber moisture-wicking and quick-drying fabric with an irregular cross section.

[0076] Local reinforcement method: The reinforcement patches for the shoulders and elbows are replaced by adding an extra layer of non-woven fabric in the corresponding area during the prefabrication of fabric A in step S1, and then heat-pressing it together to achieve a more integrated reinforcement, rather than bonding it later.

[0077] Tests have shown that this variant embodiment possesses all the beneficial effects of Embodiment 1, and is slightly lighter and faster-drying at the same level of protection.

[0078] The key changes in Example 2 are compared in Table 4.

[0079]

[0080] The working principle of the above embodiments is as follows:

[0081] 1. Principle of Flexible Protective Shelter: The main fabric of the garment is made of ultra-high molecular weight polyethylene (UHMWPE) fiber composite material. UHMWPE fibers have extremely high specific strength and modulus. When subjected to cutting or puncture by a knife, its high-strength fiber bundles can quickly disperse the impact energy across the entire fabric plane. Energy is absorbed and dissipated through fiber stretching, slippage, and breakage, thereby preventing or delaying the penetration of sharp objects. Its flexibility ensures that the garment can be used as an everyday fabric.

[0082] 2. Point-like rigidity reinforcement and energy dissipation principle: Integrated ceramic composite sheets are used in the neck area, a blind spot and vital region. Its working principle is as follows:

[0083] The first line of defense (ceramic layer): The extremely hard ceramic surface can instantly "blunt" or "crack" the blade tip that comes into contact with it, greatly consuming its piercing kinetic energy.

[0084] The second line of defense (composite material encapsulation): The ceramic sheet is encapsulated in a flexible, high-strength UHMWPE fiber base fabric. When the ceramic may break under a huge impact, the outer fiber material can effectively restrain the fragments, prevent secondary damage, and continue to absorb the remaining energy through fiber deformation.

[0085] 3. Breathable thermal management principle: The composite material roll A (protective outer layer) is aligned with the knitted cotton inner lining roll, and a layer of adhesive suspension containing heat-responsive microcapsules is evenly sprayed in the middle; then it is sent into an ultrasonic microfluidic laminator. The ultrasound causes the adhesive to be evenly distributed and penetrate along the fiber interface. The microcapsules rupture when heated and release the adhesive components, achieving a firm interlayer bond under mild pressure, while forming a continuous breathable microchannel.

[0086] 4. Convenience and Psychological Safety Principles: All the aforementioned protective structures are seamlessly integrated into a single, seemingly ordinary duty uniform. Its working principle changes the "usage paradigm" of protective equipment—from "extra equipment worn only when needed" to "invisible armor always on the body." This eliminates the risk of police officers not having enough time to don protective gear in emergencies, enhancing safety levels both physically and psychologically.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process for duty uniforms based on high-strength polyethylene material, characterized in that, include: The main garment fabric is made of ultra-high molecular weight polyethylene fiber composite material (1); The ceramic composite sheet (2) is installed in the collar layer of the duty uniform and is fixed by an inlay process to form a neck protection area. And a breathable fabric lining layer laminated with the ultra-high molecular weight polyethylene fiber composite material (1); Among them, the high molecular weight polyethylene fiber composite material (1) is composed of a graphene composite fabric outer layer, an ultra-high molecular weight polyethylene fiber non-woven fabric middle layer, a breathable functional knitted fabric inner layer and a thermoplastic polyurethane film bonding layer. The graphene composite fabric outer layer is used to improve the overall abrasion and cut resistance of the main garment fabric; The ultra-high molecular weight polyethylene fiber nonwoven fabric interlayer is used to improve the overall strength, flexibility and impact resistance of the main garment fabric; The breathable functional knitted inner layer is used to improve the overall comfort and breathability of the main garment fabric; Thermoplastic polyurethane film bonding layer is used to achieve strong interlayer bonding and breathable micropores; It also includes the following preparation steps: S1. Protective fabric prefabrication: Ultra-high strength polyethylene fibers are made into non-woven fabric or woven fabric, and then combined with thermoplastic resin film through hot pressing process to form flexible ultra-high molecular weight polyethylene fiber composite material roll. S2, preparation of collar protection unit: a prefabricated ceramic composite sheet (2) with a specific shape and size is embedded into a piece of ultra-high molecular weight polyethylene fiber composite material base fabric that matches the shape of the collar by wrapping it with a high-strength flexible adhesive to form a collar protection unit prefabricated part. S3. Ultrasonic-assisted microfluidic impregnation lamination: The ultra-high molecular weight polyethylene fiber composite roll obtained in S1 is used as the outer layer and aligned and overlapped with the selected breathable fabric lining roll. A layer of adhesive suspension containing heat-responsive microcapsules is uniformly sprayed in the middle. Then, it is sent into an ultrasonic microfluidic laminator and treated for 70 seconds at a frequency of 28 kHz, a temperature of 95℃, and a pressure of 0.5 MPa. The ultrasound causes the adhesive to be evenly distributed and penetrate along the fiber interface. The microcapsules rupture when heated and release the adhesive components, achieving a strong interlayer bond under mild pressure. At the same time, a continuous breathable microchannel is formed, forming a composite fabric that combines protection and breathability. S4. Cutting and Integration: Based on the garment pattern, cut out each piece of clothing from the composite fabric obtained in S3; precisely position and sew or high-frequency weld the prefabricated neck protection unit prepared in S2 to the corresponding interlayer position of the front neckline piece. S5. Sewing and shaping: The processed garment pieces, including the front piece with the integrated collar protection unit, are spliced ​​and sewn together according to conventional garment sewing techniques to create a garment with the appearance of everyday duty uniform. S6. Finishing: Clean, iron, and inspect the finished duty uniforms to ensure that the protective units are in the correct position, the stitching is secure, and the overall garment meets the requirements for machine washing.

2. The manufacturing process for duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: The collar is a foldable structure with a folded-down state and a stand-up state. In the stand-up state, the ceramic composite sheet (2) covers the front and side areas of the neck. The ceramic composite sheet (2) is composed of at least one of alumina, silicon carbide or boron carbide ceramics combined with a polymer matrix.

3. The manufacturing process for duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: In the shoulder, elbow and knee areas of the duty uniform, which are prone to wear and critical protection areas, the fabric density, number of layers and weight of the ultra-high molecular weight polyethylene fiber composite material (1) are locally enhanced.

4. The manufacturing process for duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: The breathable fabric lining is made of knitted cotton, functional fiber fabric with moisture-wicking and quick-drying functions, or other textile materials with moisture-wicking functions.

5. The manufacturing process for duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: The duty uniform can be machine washed as a whole, and after at least 20 standard machine wash cycles, the stab resistance of its key parts retains no less than 90% of the initial value.

6. The manufacturing process for duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: The embedding process in S2 specifically involves coating or attaching a ring of the flexible adhesive around the edge of the ceramic composite sheet (2), then placing it in a predetermined groove or marked area on the ultra-high molecular weight polyethylene fiber composite material base fabric, and then covering it with another layer of thin ultra-high molecular weight polyethylene fabric or mesh fabric. The adhesive is then cured by hot pressing, and the ceramic composite sheet (2) is firmly encapsulated in the fiber base fabric.

7. The manufacturing process for duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: The microcapsule adhesive in S3 has a particle size range of 10-50 μm, its shell is thermoplastic polyurethane, and its core material is a mixture of epoxy resin and curing agent.

8. The manufacturing process of duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: The ultrasonic microfluidic composite machine in S3 has an ultrasonic frequency of 20-40 kHz, a processing temperature of 80℃-110℃, a processing pressure of 0.3-1.0 MPa, and a processing time of 40-140 seconds.

9. The manufacturing process for duty uniforms based on high-strength polyethylene material according to claim 1, characterized in that: The local reinforcement of the shoulder and elbow in S4 is achieved by attaching one or more layers of small-area ultra-high molecular weight polyethylene fiber reinforcement patches to the back of the composite fabric in the corresponding area before cutting, and fixing them by sewing or hot pressing.

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