How to choose protective gloves and anti-static gloves
The hand protection hand is one of the most delicate and dense organs in the human body. It consists of 27 bones, accounting for 1/4 of the total number of human bones, and the distribution and organization of muscles, blood vessels and nerves are extremely surprisingly complex. Only the length of the capillary per square centimeter on the fingertip can reach several meters. There are thousands of ends. These fine neural networks allow us to perceive cold, heat, pain, etc. in a few microseconds, and even feel the vibrations that are as small as the hairline. From the date of birth, the hand has not stopped the activity, and by the end of life, the hand can move an average of 250 million times. However, we often overlook the importance of the hand and neglect the proper protection of it, so that hand injury accidents account for 20% of all types of work-related accidents. This shows that the correct selection and use of protective equipment is necessary. The type of hand injury can be divided into three categories from the big aspect: 1. Hand injury such as traumatic trauma is caused by mechanical damage to bones, muscles or tissues and structures, from severe broken fingers and fractures. To a slight injury to the flesh and the like. If you use a tool with sharp parts, manipulating some large machines or instruments with knives, tips, etc., will cause hand cuts, etc. Handling, using spindles, nails, screwdrivers, chisels, wires, etc. will stab the hand; When you roll into the machine, you can sprain, crush, or even roll your fingers. 2. Contact dermatitis This type of damage is mainly caused by the damage of the skin of the opponent's face. Light, causing dry skin, peeling, itching, severe redness, blisters, herpes, crusting and so on. The cause of this type of injury is long-term exposure to acid, alkali aqueous solutions, detergents, disinfectants, etc., or exposure to more toxic chemical and biological substances, suffering from electric shock, low temperature frostbite, high temperature burns, flame burns, etc. 3. Arm shake syndrome, white finger syndrome and other long-term manipulation of hand-held vibration tools, such as chainsaws, rock drills, electric hammers, pneumatic picks, etc., can cause such injuries. When the hand vibrates with the tool for a long time, it will also cause damage to the blood circulation system, and white finger syndrome occurs. This is especially true in wet and cold environments. Due to poor blood circulation, the hands become pale, numb, and the like. If you hurt the sensory nerves, your hand's sensitivity to temperature will decrease, the touch will fail, and even permanent numbness will result. Glove material for different hazards in the working environment, you can choose different types of gloves, such as chemical resistant gloves, insulated gloves for electrical hazards, high and low temperature gloves for high and low temperature operations, for cutting operations Cut-resistant gloves, anti-vibration gloves for vibration work, etc. The material of the glove determines the protective performance of the glove and is the basis for glove selection. Here are some common gloves materials: 1. Gloves for mechanical damage: wire - common stainless steel wire, also chrome wire, mainly used to make cut-resistant gloves. These materials have the strongest cut resistance and are easy to clean, but they are heavy and inconvenient to use. Kevlar, Spectra and other synthetic yarns are also better synthetic fiber cut-resistant materials, although the cutting resistance is not as good as that of wire. Light, comfortable to use, and improved and treated, some products are also able to meet the highest standards of cut-resistant products; nitrile (with fabric lining) - resistant to wear and puncture, flexible and comfortable to use; natural latex ( With fabric lining) - excellent elasticity, particularly flexible, with a certain degree of resistance to wear, tear and cut; PVC (with fabric lining) - can provide some wear and puncture protection, if The material is thicker and can also have a certain ability to cut, but it is not resistant to tearing; the skin - natural material, has a unique performance through various tanning treatments. The skin can be divided into: cowhide, its advantages are comfortable, durable, breathable and wear-resistant, chrome-treated, more durable, and resistant to high temperatures; pigskin, large pores, best breathability, can still be well after washing Softness does not harden; sheepskin is the most comfortable, durable and abrasion resistant, but because it is too expensive, it is generally only used in industries where the touch is high. 2. High temperature resistant gloves Material: Novoloid - a new type of high-tech synthetic fiber, no melting, anti-flame, high temperature resistance, high temperature resistance up to 1100 ° C, soft and comfortable, and resistant to many chemical substances, even after repeated Washing will not affect its high temperature resistance; Kevlar is a widely used aromatic synthetic fiber that not only resists cutting but also resists high temperature damage; aluminized material - can resist high temperature radiant heat; - If it is dry, it has good low temperature resistance. At the same time, its non-melting and non-burning characteristics make it often used to make electric welding gloves. Cotton is also a natural material that can properly protect against high temperature and low temperature. However, due to the protection requirements, the gloves are made thicker and the flexibility is not good enough. 3. Glove-resistant electrical insulation gloves for electrical damage are specially designed and rigorously tested to ensure safety. Usually electrically insulated gloves are made of pure natural latex. Latex is divided into two types: dry glue and wet glue. Insulating gloves made of wet glue have a long processing cycle and high production cost, but the elasticity of the product is particularly good and the use is very flexible. In addition, due to the special nature of live working and the characteristics of the electric insulating gloves themselves, when wearing such gloves, first wear cotton gloves (sweat, anti-slip), then put on latex gloves, and finally wear epithelial protection. Gloves to prevent piercing of insulated gloves by sharp objects. 4. Chemical resistant gloves The chemical substances are various and different in nature. Special attention should be paid to the selection of chemical resistant gloves: natural latex - in general, natural latex has a good protective effect on aqueous solutions such as acid and alkali aqueous solutions. . Its advantages are comfort, flexibility and flexibility; nitrile - it has good protection against chemical oils, greases, petrochemicals and lubricants and various solvents. However, in some solvents, swelling will affect its physical properties and reduce its protective function. Polyvinyl chloride - has a protective effect on a large number of water-soluble chemicals, such as acids and bases, but cannot protect organic substances such as solvents because many solvents Will dissolve the plasticizer, not only will cause pollution, but also greatly reduce