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For tactical uniforms, durability is just the foundation, and Cordura can become the industry's first choice because it perfectly matches the multiple needs of tactical scenarios.   1. High tear resistance to cope with complex outdoor environments Tactical duty often shuttles through jungles, ruins, and mountains, and the fabric frequently encounters hooks and pulls. Cordura's high-strength filament and compact weaving structure make the fabric tear strength far exceed that of cotton canvas and ordinary polyester cotton. Even if a small incision is made by a sharp object, it will not quickly spread and expand, ensuring the integrity of the uniform during the mission.   2. Naturally water-resistant and quick drying, suitable for changing weather conditions Nylon material itself has very low water absorption, coupled with the surface structure of air textured wire, Kaudura fabric has its own light water repellent property: light rain drops will coagulate and slip on the surface of the fabric, and will not quickly penetrate; After sweating heavily or getting wet, the drying speed is much faster than cotton canvas, and there will be no problem of sticking to the body and feeling cold after getting wet. It can keep wearing dry for a long time.     3. Weather resistance and aging resistance, no deterioration after long-term outdoor use After long-term exposure to sunlight and rain, cotton canvas will experience fiber brittleness, fading, and decreased strength, and will noticeably become old after one or two quarters of use. Kaudura's nylon 66 base material has excellent UV resistance and aging resistance. It is not easy to fade and embrittle after long-term outdoor use. The fabric strength retention rate is high. Under normal use, the service life can reach several times of cotton canvas.   4. Lightweight and high-strength, reducing the burden of wearing Under the same durability level, the weight of Cordura is much lower than that of heavy-duty cotton canvas. In other words, to achieve the same durability life, Cordura can be made lighter and thinner, greatly reducing the physical burden of long-term wear and making tactical movements more flexible, without being constrained by heavy fabrics.

The super durability of Cordura is not determined by a single factor, but by the combined effect of the three layers of "substrate spinning weaving" technology, from the fiber source to the finished fabric, each layer is empowering durability.   1. Substrate layer: High strength nylon 66, with outstanding natural strength The base material of cotton canvas is natural cotton fibers, which have limited molecular structure strength. After friction, the fibers are prone to breakage, fuzzing, and detachment. And Cordura uses high-strength nylon 66 filament with stable molecular chain structure, which has much higher fracture strength and tensile resistance than natural cotton fiber and ordinary polyester. This is the underlying foundation of the performance gap: the upper limit of the fiber's own strength determines the durability of the fabric ceiling. The inherent wear resistance of nylon 66 filament has put Cordura at a higher starting point than cotton canvas.   2. Process layer: Air deformation wire (ATY) technology, turning "point wear" into "surface sharing" This is the core technical barrier of Cordura, and also the key to its performance far exceeding ordinary nylon. Ordinary nylon fabric uses smooth and straight filaments, with a smooth fiber surface. When subjected to friction, it is "hard to hit at a single point", and stress is concentrated at the contact point, making the fibers easily worn off. And Cordura uses DuPont's exclusive Air Textured Yarn (ATY) process: by high-pressure compressed air injection, the originally parallel nylon filaments are blown, bent, and intertwined, forming a large number of fine loops and arcs on the fiber surface, ultimately obtaining fluffy and micro looped deformed yarns.     This special structure brings two wear-resistant advantages:   Dispersed friction force: The countless loops on the surface change the frictional contact from "single point force" to "multi-point dispersed force", greatly reducing the frictional load on a single fiber and significantly slowing down the wear rate; Gradual wear: During friction, the surface loops are worn first, and then the core layer filaments are gradually consumed, which is equivalent to adding several layers of "wear-resistant buffer layers". The decay rate of fabric appearance and strength is much slower than that of smooth filaments.   It is this process that enables the wear resistance of Cordura with the same substrate to directly reach more than twice that of ordinary nylon.   3. Weaving layer: high-density and compact structure, tear resistant and anti hooking With high-performance yarn, matching weaving techniques are also required. Cordura commonly uses high-density plain weave or twill weave, with tightly arranged yarns and stable structure, bringing two additional durability gains:   Strong anti snagging ability: The tight weaving method makes it difficult for sharp objects such as branches and wire mesh to snag into the yarn, greatly reducing snagging damage in outdoor environments; Crack does not spread: Once a small damage occurs, the tightly woven structure will limit the spread of the crack and will not tear like a thin canvas. The small damage does not affect the overall use.   Data validation: 10 times difference in laboratory In the standard Martindale abrasion test, 1000D Cordura fabric can withstand more than 300000 friction cycles before obvious wear occurs; However, conventional 12 ounce heavy-duty cotton canvas can only withstand fiber breakage and abrasion after 15000 to 25000 cycles. Converted, the difference in wear life between the two is indeed more than 10 times, which is also the scientific basis for the statement 'wear resistance is 10 times that of canvas'.

In the selection logic of professional tactical uniforms, durability always ranks first. A uniform that is frequently rubbed, pulled, and exposed to outdoor environments, if the fabric is not durable, can cause problems such as white elbows, torn pant legs, and torn hooks in just a few months. This not only affects the integrity of the appearance, but also may pose safety hazards during duty tasks due to fabric failure.   Many people think Cordura is just another name for nylon fabric, but it's not true. It is a patented high-performance fabric brand registered by DuPont in the United States, with a core substrate of high-strength nylon 66 filament. However, through special spinning and weaving processes, it achieves far superior wear resistance, tear resistance, and weather resistance compared to ordinary nylon.   Simply put, all Cordura belongs to nylon, but not all nylon can be called Cordura. Authentic Cordura fabric has strict raw material standards, process specifications and quality control system, and each batch has corresponding performance certification, which is the most essential difference between it and ordinary nylon plaid fabric.     The two main specifications commonly used in tactical uniforms Cordura uses "D" as the unit of fiber thickness, and the larger the number, the thicker the fiber and the higher the wear resistance. There are two mainstream specifications for tactical uniforms:   500D Cordura: The golden standard for tactical uniforms, achieving the best balance between durability, weight, and breathability, suitable for most high-intensity duty scenarios such as daily patrols, tactical training, emergency rescue, etc; 1000D Cordura: Heavy duty specification, with full wear and tear resistance, thick and stiff fabric, mostly used for reinforcing high wear areas or heavy-duty special duty uniforms, to cope with extreme working conditions such as mountains, jungles, and heavy duty.

As a professional tactical uniform brand, Dragon Edge adheres to the design concept of "scene determines fabric", and creates a tiered product line for different usage needs, making each uniform suitable for the strength requirements of the corresponding scene, while balancing durability, functionality, and wearing comfort.   Daily duty series: high-density polyester cotton blend Using 65/35 high-density polyester cotton blended fabric, it is wrinkle resistant, firm, skin friendly, comfortable, easy to wash, fast drying, and does not deform; Suitable for daily duty, indoor security, training and teaching scenarios, with outstanding cost-effectiveness, meeting the needs of large-scale procurement.   Professional Tactical Series: High strength Nylon 66 Grid Cloth Using high-strength nylon 66 checkered fabric with high tear strength, quick drying and wrinkle resistance, combined with waterproof fabric treatment, suitable for outdoor duty, tactical training, emergency rescue and other medium to high intensity scenarios; Lightweight design reduces the burden of wearing and allows for stress free long-term movement.   Heavy duty special service series: authentic Cordura fabric DuPont authentic 500D Cordura fabric is used, which is super wear-resistant, tear resistant, weather resistant and splash resistant, and is suitable for heavy load tactics, mountain duty, secret service security and other high wear scenes; Reinforced stitching and structural design to further enhance service life and cope with extreme working conditions.     Upgraded details and craftsmanship, suitable for the entire scene The entire series of uniforms are reinforced for high wear areas such as elbows, knees, and buttocks, combined with a multi pocket tactical layout and ergonomic tailoring, balancing durability and mobility; Multiple camouflage and solid color options are available to meet the dressing requirements of different units.

1. Polyester cotton blend: Classic duty style, comfortable and easy to maintain Polyester cotton blend is the longest used and most widely used fabric in the tactical uniform field. It is usually blended with polyester fiber and cotton in proportion, with common ratios of 65% polyester+35% cotton (TC fabric), 50% polyester+50% cotton (CVC), and some high-end styles may add spandex to enhance elasticity. core strengths   Comfortable to wear: Cotton fiber brings a skin friendly feeling, fits snugly without itching, and has no obvious foreign body sensation during long-term duty; Wrinkle resistant and easy to maintain: The polyester component endows the fabric with wrinkle resistant properties, making it less likely to deform after washing and eliminating the need for frequent ironing, making it suitable for daily high-frequency wear; Cost friendly: Mature raw materials and weaving processes, prices far lower than nylon fabrics, and low pressure for bulk procurement; Good anti-static performance: Compared to pure nylon, polyester cotton blend is less likely to generate static electricity and is suitable for indoor, computer room and other scenarios.   Main shortcomings   Moderate wear resistance: Cotton fibers have much lower wear resistance than nylon, and high friction areas (elbows, buttocks, pant legs) are prone to abrasion and pilling, resulting in a shorter lifespan in high-intensity outdoor environments; Poor quick drying: Cotton fibers have a high water absorption capacity, slow drying speed after sweating or rain, sticky and sticky on the body after getting wet, and a sudden drop in body comfort; Limited strength: Tear strength and anti hooking ability are weaker than nylon fabric, and it is easy to be hooked by tree branches in jungle and mountain scenes.     Typical Applicable Scenarios Low to medium intensity scenarios such as daily duties, indoor security, training and teaching, commuting duty, as well as units with limited budgets that require large-scale procurement. It is a balanced choice that balances comfort and basic durability. 2. Nylon 66: versatile tactical model, lightweight and high-strength Nylon 66 (nylon 66) is currently the mainstream fabric for professional tactical uniforms, mostly woven using checkered fabric technology, and some styles will be treated with anti splash treatment. It is the type of fabric that balances performance and weight the best. core strengths   High strength and wear resistance: The wear resistance of nylon fiber itself is 3-4 times that of cotton, and the grid cloth structure further enhances its tear resistance. Under normal duty training, its service life is more than twice that of polyester cotton; Lightweight and quick drying: The fabric has a light weight and extremely low water absorption. After sweating heavily, it dries quickly without getting wet or sticky, making it suitable for long-term outdoor activities; Anti wrinkle and anti shrinkage: It is not easy to shrink or deform after washing, and there are no obvious wrinkles when folded and stored, making it suitable for portable work; Good weather resistance: UV resistance, anti-aging ability is better than polyester cotton, long-term outdoor sunshine is not easy to fade, not easy to brittle.   Main shortcomings   Moderate comfort: Pure nylon fabric has weaker skin affinity than cotton, and people with sensitive skin may experience slight itching when wearing it close to the body; Easy to generate static electricity: It is easy to accumulate static electricity in dry environments, adsorb dust, and may cause inconvenience in some scenarios; Price higher than polyester cotton: The cost of raw materials and weaving is higher, and the overall selling price of uniforms is higher than that of polyester cotton styles.   Typical Applicable Scenarios Outdoor duty, tactical training, field operations, emergency rescue and other high-intensity scenarios are the mainstream choices for professional tactical units, balancing durability and operational flexibility. 3. Cordura: Heavy duty flagship model, super durable Cordura is a patented modified nylon fabric launched by DuPont, known for its high strength and super wear resistance. Common specifications include 500D, 1000D, etc. The higher the D number, the thicker the fiber and the stronger the wear resistance. It is often used for heavy-duty tactical equipment and high wear uniforms. core strengths   Super wear-resistant and tear resistant: Through a special air deformation wire process, the wear resistance of Cordura is 1.5 to 2 times that of ordinary nylon 66, with outstanding anti hooking and anti puncture capabilities. Its lifespan advantage is extremely obvious in long-term high friction scenarios; Anti splash and weather resistant: The fabric comes with water repellent properties, which can quickly slide off in light rainfall. When combined with anti splash treatment, it has stronger outdoor adaptability; Excellent anti ultraviolet and anti-aging performance, which is not easy to fade and embrittle after long-term outdoor use; Structural stability: The fabric has good stiffness and is not easily deformed when worn for a long time. The elbows, knees, and other parts are not easily polished, and the appearance is well maintained.   Main shortcomings   Heavy weight: Under the same area, the weight of 500D Cordura is significantly higher than that of ordinary nylon 66, and the burden is heavier when worn for a long time; General breathability: The fabric has high density and coarse fibers, and its breathability and sweat wicking ability are weaker than ordinary nylon. The feeling of stuffiness is more obvious in high temperature environments; High price: The cost of patented fabrics is high, and the overall selling price of uniforms is significantly higher than that of ordinary nylon models, which belongs to the high-end positioning.   Typical Applicable Scenarios Heavy duty tactics, outdoor exploration, mountain duty, security special operations and other high wear and tear, high-intensity scenarios, as well as users who pursue ultra long service life and extreme durability requirements.

Tactical uniforms are different from ordinary workwear and require multiple tests such as friction and pulling, outdoor weather, long-term wear, and tactical movements to evaluate the quality of a fabric. The core criteria are based on seven dimensions:     Wear resistance: The ability to resist wear and tear under long-term friction directly determines the service life of the uniform;   Tear strength: The ability to resist tearing when pulled by external forces, suitable for scenarios such as tree branch hooking and equipment dragging;   Breathability: The ability to breathe and sweat after sweating during exercise, which affects the comfort of long-term wear;   Quick drying: The speed at which it dries after being wet, suitable for outdoor rainy and sweating scenarios;   Weight: The weight of the fabric itself affects the burden of wearing and flexibility of movement;   Weather resistance: anti ultraviolet, anti-aging, anti splash ability, suitable for outdoor long-term duty;   Difficulty of maintenance: whether it is prone to wrinkling, fading, and easy to wash.   No fabric can achieve perfect scores in all dimensions, and all selection is essentially a scenario oriented performance trade-off.

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Is there a difference between bulletproof vest and stab proof vest? Since bulletproof vests can protect against bullets, isn't it even easier to prevent punctures? The essential difference between them is their functionality, one is bulletproof and the other is knife proof. The former is mainly used for protecting bullets, while the latter is mainly used for protecting knives and sharp tools. Due to the different protected objects, the materials used are also different!   Material: A bulletproof vest consists of a cover and a bulletproof layer. Clothing covers are usually made of chemical fiber fabrics. The bulletproof layer is made of materials such as metal (special steel, aluminum alloy, titanium alloy), ceramics (corundum, boron carbide, silicon carbide), glass fiber reinforced plastic, nylon, Kevlar, etc. The stab resistant clothing is made of a blend of ultra-high strength and ultra-high density polyethylene short cut yarn and aramid short cut yarn.     Function: The special weaving structure of the anti stab suit, combined with the excellent performance of ultra-high strength fibers, makes it have functions such as anti cutting, anti cutting, and anti stab. A bulletproof vest is a type of clothing that can absorb and dissipate the kinetic energy of bullets and fragments, prevent shrapnel from penetrating the bulletproof vest, and effectively protect the protected parts of the human body.   Price: Due to the different materials used in production, there is a significant difference in the price of bulletproof vests and stab resistant clothing.   In real life, you can choose whether to use bulletproof vests or stab proof vests according to your actual situation. DRAGON EDGE is a professional manufacturer of bulletproof vests. Welcome to contact us for consultation!  

It was not until the 1960s that engineers developed a reliable bulletproof armor that could be worn comfortably. Unlike traditional armor, this bulletproof vest is not made of metal. It is made of advanced woven fibers that can be sewn into vests and other soft clothes, providing more protection for soldiers fighting on the battlefield and thus protecting their bodies on a large scale. Below, the editor will introduce the specific working principle of bulletproof vests.   In fact, hard bulletproof vests provide more protection than soft bulletproof vests, but they are much more troublesome. Police officers and military personnel may wear this protective device when at high risk of attack, but in daily use, they usually wear soft bulletproof vests and flexible protective devices, just like regular shirts or jackets.   Soft bulletproof vests may be a rather mysterious high-tech product for ordinary people like us: how do soft clothes stop bullets? In fact, the working principle is very simple. Essentially, a piece of bulletproof material is just a very sturdy net     The working principle is similar to that of a soccer net     Its working principle is similar to the familiar football net, where the goal is composed of a mesh structure formed by many long ropes that interlock and are fixed to the goal frame. When you kick the football into the goal, the ball will have a certain amount of energy in the form of forward inertia. At this time, the football will keep moving forward. When the ball hits the net, the energy of the impact point is dispersed to a larger area.   The principle of a bulletproof vest is similar to a soccer net, where the long fibers on the vest interweave to form a dense net. Of course, bullets move much faster than football, so the net needs to be made of stronger materials.   From online sources, the editor learned that the most famous material used for bulletproof vests is mostly DuPont's KEVLAR fiber. The material of the bulletproof vest, KEVLAR, is very lightweight and lightweight, just like traditional clothing fibers, but five times stronger than steel of the same weight. When woven into a dense mesh, the material can absorb a large amount of energy, thereby minimizing the impact force of bullets on humans.   In addition to preventing bullets from reaching the human body, bulletproof vests must also prevent blunt injuries caused by bullets. This requires bulletproof materials to be stronger and softer. Kevlar fiber is currently the most commonly used fiber for manufacturing bulletproof vests, but other materials are also under development. It is worth noting that another possible bulletproof fiber is spider silk, but it has not yet been finished.   A bulletproof vest must spread blunt wounds throughout the entire vest, for which the bulletproof material must have a very tight weave. To make it more sturdy, the material is coated with resin material and sandwiched between two layers of plastic film.   Of course, people wearing bulletproof vests will still feel the energy of bullet impact, but it will cover the entire torso rather than specific areas. If it weren't for the close range blow, the victim wouldn't have suffered too much harm.  

What is bulletproof vest used for? What are the levels of classification?   Bullet proof vests are divided into soft and hard/composite types. Among them, soft bulletproof vests achieve bulletproof effects through high-performance fiber materials such as aramid fiber (famous Kevlar). When a bullet hits a fiber material, the fiber material will stretch and shear, absorbing the energy of the bullet by spreading the impact energy to areas outside the impact point. Soft bulletproof vests can only defend against bullets from handguns, shotguns, explosive fragments such as grenades, and long-range automatic rifle attacks.   Hard/composite bulletproof vests achieve bulletproof effects by combining high-performance fiber materials of soft bulletproof vests with hard metals or ceramics. That's why this type of bulletproof vest is called a hard/composite bulletproof vest (a mixture of soft and hard). The bulletproof method of this composite bulletproof vest is as follows: when a bullet hits the bulletproof vest, it first comes into contact with the bulletproof steel plate or reinforced ceramic plate of the first line of defense in the vest. At the moment of contact, both the bullet and the hard bulletproof material may crack, which consumes most of the energy of the bullet. Soft bulletproof materials serve as the second line of defense, absorbing and dissipating the remaining energy of bullets, and acting as a buffer to protect the safety of soldiers. Hard/composite bulletproof vests can withstand not only pistol bullets but also infantry bullets.     Bullet proof vests are classified into six levels based on their level of protection:   NIJ I: It can withstand bullets with an initial velocity of around 329 meters per second and a bullet weight of 2.6 grams, or bullets with an initial velocity of 320 meters per second and a bullet weight of 6.2 grams.   NIJ IIA: Can withstand bullets with an initial velocity of around 373 meters per second and a bullet weight of 8 grams, or bullets with an initial velocity of 352 meters per second and a bullet weight of 11.7 grams. In addition, there are bullets with an initial velocity of around 275 meters per second and a warhead weight of 14.9 grams.   NIJ II: It can withstand bullets with an initial velocity of around 398 meters per second and a bullet weight of grams, or bullets with an initial velocity of 436 meters per second and a bullet weight of 10.2 grams.   NIJ IIIA: It can withstand bullets with an initial velocity of around 448 meters per second and a bullet weight of 8 grams, or bullets with an initial velocity of 436 meters per second and a bullet weight of 15.6 grams.   NIJ III: Can withstand bullets with an initial velocity of around 847 meters per second and a warhead weight of 9.6 grams. This level is for hard/composite bulletproof vests.   NIJ IV: Can withstand bullets with an initial velocity of around 887 meters per second and a warhead weight of 10.8 grams. This level is for hard/composite bulletproof vests.

Why are bulletproof vests vest style? In fact, in ancient times, soldiers who went to battle wore armor, which could effectively reduce the damage caused by war. Since the invention of firearms, armor has become virtually useless and vulnerable to the power of rifles. With the development of technology and the birth of bulletproof vests and helmets, soldiers can finally prevent the harm caused by firearms.   Bullet proof vests, also known as bulletproof vests, can only provide very limited protection in the front area. Since bulletproof vests are effective, why not protect the arms and legs? If this is achieved, can it effectively protect soldiers? However, reality is cruel. If bulletproof vests protect soldiers' limbs, it is likely to increase the casualty rate of soldiers.     Modern bulletproof vests are still in their early stages, and whether they are plug-in or Kevlar, they cannot guarantee absolute safety. Most of the time, they can only resist stray bullets or debris damage. If a soldier wearing bulletproof vests is shot in the face by the enemy, no matter how tightly he protects himself, he cannot guarantee his safety. Of course, humans have the conditions to produce bulletproof vests that can resist any bullet damage. If a few centimeters thick steel plate is used as protection, bullets cannot penetrate the bulletproof vest, but soldiers wearing this bulletproof vest will definitely not be able to move.   Even if there are some bulletproof vests on the body now, if it affects the movement of soldiers, using bulletproof vests to protect their limbs may prevent their hands and feet from moving normally. The bulletproof vest on the board imposes a great burden on soldiers, while Kebler's bulletproof vest imposes certain constraints on their movements. Initially, bulletproof vests were used to prevent bullets and shrapnel. The most casualties on the battlefield are shells. Bulletproof vests and helmets are actually used for this purpose.   Of course, there is another important reason. The head and torso are the most important parts of the body. If these two parts are attacked, it is highly likely to be fatal. But the limbs are different, and even if hit, the chances of survival are still high. Instead of wearing bulletproof vests to protect one's limbs, it is better to increase flexibility and survival opportunities through flexible tactical actions. The defensive tactics of the soldiers are all carried out by their hands and feet. If their hands and feet are enclosed, it is impossible to perform defensive tactics. Even soft armor will slow down the soldiers' posture. Wear more protective equipment, as being too hot can also cause significant physical exertion, especially in the legs, which can have a greater impact and require more strength and sweat.   With the continuous development of future science and technology, bulletproof vests will definitely become more and more advanced. Perhaps soldiers will fight like future soldiers, and then kinetic energy rifles will lose their function. Of course, unless it is a genuine global friendship, there is no doubt that firearms capable of breaking free from defense will emerge, and the battle of spears and shields will not easily cease.  

As for police bulletproof vests, their main function can only be to prevent low-speed and medium speed bullets - handgun bullets - from harming the police's body at a certain distance. But wearing bulletproof vests is not like entering a safe, where no matter how the gun is fired, it can be unscathed, because bulletproof vests have a certain degree of bulletproof performance under certain limited conditions. Next, we will introduce the protective performance of police bulletproof vests.   Bullet proof vests are classified into soft, hard, and a combination of soft and hard materials. Generally, their bulletproof performance gradually increases, but their weight also gradually increases. Police officers in various countries often prefer to wear lightweight soft bulletproof vests instead of bulky composite bulletproof vests, despite their good protective performance, for the convenience and flexibility of their operations.     However, due to technical reasons, the soft bulletproof vests equipped in various countries cannot achieve 100% bulletproof performance. At present, bulletproof vests are mostly tested according to the US NIJ0101.04 standard for V50, which means that when the probability of penetration of the bulletproof vest is 50%, the shooting distance of this standard is generally 5-15 meters. According to relevant information, according to this standard, police bulletproof vests with steel plate lining in China can generally protect various caliber handgun bullets at a distance of 5 meters and a speed of 300-450 meters per second, while soft bulletproof vests cannot provide effective protection against steel core bullets. But this does not mean that the standard for bulletproof vests in our country is low, because even the Belgian FNP series bulletproof vests, which are famous for their bulletproof performance, can only protect various caliber handgun bullets up to 3 meters away.   The bulletproof vest in the United States, known for its high technology and standards, cannot guarantee 100% bulletproof performance. According to media reports, a certain bulletproof vest that claims to be able to withstand handgun fire from 7.5 centimeters away and is equipped with over 200000 police officers in the United States was hit by bullets twice within 10 days in 2003, resulting in one death and one injury to two police officers. Of course, the investigation conclusions are all objective reasons: when the bulletproof vest was punctured, it was not worn and used within the effective data of the bulletproof vest protection standard.   This article mainly introduces the protective performance of police bulletproof vests. Based on the above analysis, it can be seen that in anti drug incidents, bulletproof vests were pierced by Glock pistols due to various potential factors. The proximity when hit is the main factor, just like the bulletproof vest in the United States that can block handgun shots from 7.5 centimeters away, none of which can prevent bullets because the criminal's shooting distance is only 2.5 centimeters. In addition, the use of steel core bullets by drug traffickers greatly increases the probability of bulletproof vests being punctured.  

Can domestically produced bulletproof vests bought online really be bulletproof? Whether it is imported or domestically produced bulletproof vests, they are mainly a type of equipment prepared to minimize the harm of firearms to the human body. The importance of bulletproof vests is probably the same as why banks and the military need them. Below is an introduction to domestically produced bulletproof vests purchased online. Can they really be bulletproof?   The fundamental purpose of domestically produced bulletproof vests is not only to effectively reduce the damage to the human body, but also to resist the impact of shrapnel. The number of shrapnel produced by artillery fire far exceeds the number of people directly attacked, and this is also the value of domestically produced bulletproof vests, which try to avoid harm to soldiers as much as possible.     Bullet proof vests are mainly used to disperse the kinetic energy caused by bullets to the human body, and also to better protect the survival rate of soldiers. Currently, there is no bulletproof vest that can withstand standard AK-47 shooting within 100 meters. This does not mean that domestic bulletproof vests can withstand all bullets. Their main function is to effectively prevent bullets from causing harm to the human body within a certain distance.

Soft bulletproof vests are divided into many levels, according to different bulletproof levels, they can be divided into level 2, level 3, level 4, and level 5 bulletproof vests. Due to their high practicality, they are widely used by the military, army, and government. So, what are the technical parameters of soft bulletproof vests? Below, the editor will provide a specific introduction.   Technical parameters of soft bulletproof vest:   1. Structure: Composed of a jacket and a bulletproof layer, the bulletproof layer is made of soft bulletproof material;   2. Protection area: ≥ 0.33 square meters;     3. Protection level: 2-5 levels are optional;   4. Appearance: The outer fabric has no damage, floating threads, or missing needles, and the protective cover of the bulletproof layer in the inner liner has no defects such as holes or damages; The surface of the soft bulletproof layer is flat, without local protrusions, depressions, wrinkles, and other defects. The outer layer is usually printed with a white police micro, and the text on the jacket is made of reflective material. The back of the jacket is printed with the white Chinese word "police" and the English word "POLICE". Jingjiang Gu'an Police can customize the text, color, etc;

Ultra high molecular weight polyethylene, also known as UHMWPE or UPE, refers to linear polyethylene with an average molecular weight exceeding 1.5 million. Also known as high-strength and high modulus polyethylene fiber. Ultra high molecular weight polyethylene fiber, along with carbon fiber and aramid, is known as one of the three high-performance fibers. It is currently the fiber with the highest specific strength and bulletproof performance among industrialized fiber materials.   Due to its extremely high molecular weight, ultra-high molecular weight polyethylene has unparalleled comprehensive performance compared to ordinary polyethylene and other engineering plastics, and is called an "amazing plastic" by many European and American countries.     UHMWPE fiber has excellent properties such as high strength and high modulus, impact resistance, wear resistance, chemical corrosion resistance, electrical insulation, and light resistance. Its specific strength is equivalent to 15 times that of high-quality steel wire, 1.8 times that of carbon fiber, and 1.6 times that of aramid. It has ultra-low elongation at break, high energy absorption rate, softness and bendability, and low density compared to water. It is widely used in national defense and civilian industries, and is a strategic material for strong countries and armies. It has been widely used in many industries and is currently the preferred material for manufacturing bulletproof vests, helmets, and protective armor.   Key application areas of UHMWPE fibers   01 National Defense and Military Industry Field   UHMWPE fiber is as thin as paper and as hard as steel. Bulletproof and explosion-proof helmets made of resin composite materials reinforced with this fiber have become alternatives to steel helmets and aramid reinforced composite helmets.   Bulletproof helmets and riot helmets made of UHMWPE fiber-reinforced resin composite materials have gradually replaced steel helmets and aramid composite helmets in foreign countries.   With the improvement of national defense and military equipment level, the driving force for the demand of UHMWPE fiber industry will also be increasing.   02 Aerospace field   In aerospace engineering, due to its lightweight, high strength, and good impact resistance, this fiber composite material can be applied to wing tip structures of various aircraft, spacecraft structures, and buoy aircraft. This fiber can also be used as a deceleration parachute for space shuttle landing and a rope for hanging heavy objects on the aircraft, replacing traditional steel cable ropes and synthetic fiber ropes, and its development speed is exceptionally rapid.   03 Marine field   In the marine industry, UHMWPE fiber has rapidly become the main material for offshore ropes, ship mooring ropes, deep-sea fishing nets, and offshore aquaculture cages due to its excellent performance. The market demand for it continues to grow vigorously, especially in the rope and cable manufacturing industry. The rope and cable made of UHMWPE have a much longer fracture length under its own weight than steel rope and aramid, and are lighter than water, able to float on the water surface, and resistant to seawater corrosion and ultraviolet radiation, ensuring a longer service life. The future market demand will maintain strong growth.   04 Sports equipment field   In the field of sports equipment, UHMWPE fiber can be used to make safety helmets, skis, sail boards, fishing rods, rackets, bicycles, gliders, ultra lightweight aircraft components, etc. Its performance is superior to traditional materials.   05 Medical and Health Field   In the field of healthcare, UHMWPE fiber-reinforced composite materials are used in dental tray materials, medical implants, and plastic surgery sutures. They have good biocompatibility and durability, as well as high stability, and will not cause allergies. They have entered clinical applications. It can also be used for medical gloves and other medical equipment.   06 Construction field   In the construction industry, UHMWPE fiber-reinforced composite materials can be used as walls, partition structures, etc. As a reinforced cement composite material, it can improve the toughness of cement and enhance its impact resistance. UHMWPE fibers can also be used as building material ropes, building protective nets, cargo nets, etc.   07 Other field applications   In industrial applications, UHMWPE fibers and their composite materials can be used as pressure resistant containers, conveyor belts, filter materials, automotive buffer plates, etc. Due to the excellent wear resistance and impact resistance of UHMWPE fibers and their composite materials, various mechanical components such as gears, camshafts, impellers, rollers, pulleys, bearings, bushings, shaft sleeves, shavings, gaskets, seals, elastic couplings, screws, etc. can be produced in the mechanical manufacturing industry.  

Explosion proof bulletproof vests have explosion-proof functions compared to ordinary bulletproof vests. They are widely used in fields such as explosion prevention, counter-terrorism and stability maintenance, and handling of large-scale riots. The danger of explosions is caused by high-speed shrapnel and strong shock waves. Can wearing an explosion-proof bulletproof vest prevent explosions and bullets? Below, the editor from Zhongtai will provide a brief explanation.   Explosion proof bulletproof vests can defend against shrapnel generated during explosions, and their principle is similar to that of bulletproof vests. But the damage caused by the shock wave is greater. It passes through the explosion-proof bulletproof vest and directly reaches the internal organs. Even if the shrapnel does not cause penetrating injuries during the explosion, the shock wave may still shatter the internal organs and blood vessels. Therefore, wearing explosion-proof bulletproof vests does not mean that we can rest assured. If an explosion occurs at close range, we should quickly avoid it.   　　   Explosion proof bulletproof vests are made of high-strength coated fabrics and ultra-high molecular weight polyethylene fiber materials, which are environmentally friendly, non-toxic, and have no natural harm to the human body. Even if used for a long time, they will not cause harm to the human body. When encountering powerful ammunition, be careful to avoid it to ensure your own safety.

Traditional bulletproof vests   Traditional bulletproof vests are mainly composed of a cover and a bulletproof layer. The cover is mainly made of synthetic fabric, which is lightweight and mainly serves to cover and protect the bulletproof layer. The bulletproof layer is made of hard and soft materials such as metal, fiberglass, ceramic, nylon, Kevlar (aramid), etc. Due to the large weight of metal, fiberglass, ceramic, etc., it seriously affects the convenience of bulletproof vests and affects personal activities. So researchers have conducted research on the materials of bulletproof layers and made great progress.     New type of bulletproof vest   The main material used in the new bulletproof vest is ultra-high molecular weight polyethylene fiber (UHMWPE), which is currently the fiber with the highest specific strength and modulus in the world, with a molecular weight ranging from 1 million to 5 million.

Bullet proof vests below Grade IIIA are soft and do not require ceramic plates. The bulletproof layer material of soft bulletproof vests can be divided into domestic and imported materials. The domestically produced material is white ultra-high strength polyethylene fiber; The imported material is KEVLAR yellow; The price of bulletproof vests is related to the materials used and also to the protective area. The larger the area, the higher the price.     There are three common types of bulletproof vests: vest type (0.27 square meters), vest type (0.32), and full protection type (with a protective crotch of 0.60).

High Density Polyethylene (HDPE), also known as Low Pressure Polyethylene, is a semi transparent material with high crystallinity and non-polar surfaces. PE has excellent resistance to most household and industrial chemicals.   HDPE is a highly crystalline and non-polar thermoplastic resin. High density polyethylene is a white powder granular product that is non-toxic and odorless, with a density ranging from 0.940 to 0.976 g/cm3; The crystallinity is 80%~90%, the softening point is 125~135 ℃, and the operating temperature can reach 100 ℃; The melting temperature is 120-160 ℃. For materials with larger molecules, it is recommended to have a melting temperature range of 200-250 ℃.     It has good heat and cold resistance, good chemical stability, high rigidity and toughness, and good mechanical strength. The dielectric properties and resistance to environmental stress cracking are also good.     Hardness, tensile strength, and creep resistance are superior to low-density polyethylene; Wear resistance, electrical insulation, toughness, and cold resistance are all good, but slightly inferior compared to low-density insulation; Good chemical stability, insoluble in any organic solvent at room temperature, resistant to acid, alkali, and corrosion by various salts; Thin films have low permeability to water vapor and air, and low water absorption; Poor aging resistance and lower environmental cracking resistance compared to low-density polyethylene, especially when subjected to thermal oxidation, can lead to a decrease in its performance. Therefore, the resin needs to be improved by adding antioxidants and UV absorbers to address these shortcomings.     High density polyethylene film has a lower thermal deformation temperature under stress, which should be noted when applied.

A bulletproof helmet is a device that can absorb and dissipate the energy of a bullet, prevent penetration, reduce blunt injuries, and effectively protect the human head. The main target audience for bulletproof helmets is to equip military combat personnel and police officers, and there are mainly two types of helmets: Japanese and German.     Test basis: According to GA293-2001 "Police Bulletproof Helmets and Masks", the bulletproof level is set as Level I: to prevent penetration of 64 type 7.62mm pistol bullets (lead core) fired from domestic 64 type or 77 type 7.62mm pistols. Level II: Protection against penetration of Type 51 7.62mm pistol bullets (lead core) fired from domestically produced Type 54 pistols.