Protective clothing, as the name suggests, is a garment that provides protection to personnel in special industries. The protective clothing is widely used in fields such as medical care, security, testing, radiation, high temperature, dust prevention, and aviation. The correct choice and use of protective clothing can play a protective role and ensure the health and safety of personnel.
At present, the international protective clothing market can be divided into low-end, middle-end and high-end protective clothing.
Low-end protective clothing is more familiar to people, traditionally known as "paper clothing" white disposable protective clothing. The basic structure of this "paper coat" is spun-bonded polypropylene (SBPP), spun-bonded melt blown spun bond (SMS), non-woven polyethylene, and breathable microporous film laminated nonwovens. . Traditional conjoined workwear (SBPP and SMS) is mainly applied to low-risk, non-hazardous chemicals, especially dust particles, so it is difficult to have common industrial chemicals (grease, oil, gasoline, paint, and lubricants). Good protection.
Non-woven polyethylene is a non-woven fabric introduced with polyethylene and nylon coating. It has a significant improvement in spatter-proofing on the basis of anti-dust particles. This is Tyvek of DuPont, which is currently on the market. However, Tyvek's tear resistance is poor, and it is easily melted at high temperatures, making it somewhat limited in certain operating environments. NexGen, developed by KAPPLER in the 1990s, is a breathable microporous film laminate nonwoven that further enhances the performance of discarded conjoined workwear. By using disposable diaper technology, it has higher properties in blocking dust particles, limited chemical liquid splashes, and comfort. In particular, it has good tear resistance and will not melt at high temperatures, making up for the shortcomings of existing products.
The middle-end protective clothing is relatively rare in the market. It is what we usually call B-class protective clothing. Such protective clothing is usually a multi-layer film layer and is pressed onto a durable, durable polypropylene substrate. It has stronger physical properties: tear resistance, impact resistance and abrasion resistance, and is available in a variety of colors. Low-end protective clothing has better chemical resistance and is affordable (from a few hundred to a few thousand dollars) to meet most industrial applications. In particular, it is mainly used for protective dry particles, slight chemical splashes, moderate chemical splashes, and heavy chemical splashes. Typical applications include the handling and handling of acids and other chemicals, the cleaning of tanks, the cleaning of pesticides, petroleum and chemicals, hazardous substances and waste, and the application of fire squadrons, corporate fire brigades, and government public utilities.
High-end protective clothing is divided into limited use or repeated use of protective clothing. Reusable protective clothing materials include isobutylene rubber, chlorinated polyethylene, polyvinyl chloride, neoprene, VITON (a more popular protective material developed by DuPont), etc. for industrial chemical treatment and daily maintenance. The known hazards in the invention have a good protective effect. The material for limited use of protective clothing is a laminated multilayer film. It is light weight, cheap and comfortable to wear.
So, how should we choose and use protective clothing?
1. Assess hazards in the workplace
These hazards can be divided into the following categories: heat/flames, chemicals, radioactivity, biohazards, cutting, piercing, impact or impact, and the combination of the above.
2. Consult the distributor of safety equipment, manufacturers of protective clothing
Understand the advantages and limitations of different protective clothing, and require corresponding documents to prove it. Even with many outside advice and advice, the ultimate responsibility for choosing and using protective clothing lies with the company itself, and cannot be transferred to outside agencies.
3. Choose limited use or repeated use of protective clothing
When purchasing protective clothing, companies should consider work-related factors: one exposure, several exposures, or repeated use for a long time. Generally speaking, limited use of protective clothing can be used once, several times or “more timesâ€, and repeated use of protective clothing can provide effective protection for several years. No matter what kind of protective clothing, the most important thing is that from the first use to the last use, the protection characteristics of protective clothing should be constant. Without reducing the durability of protective clothing, the previous pollutant must be completely removed. This requires regular inspections, cleaning and maintenance. When choosing a limited or repeated use of protective clothing, you should first consider whether you can cost-effectively convert contaminants from protective clothing into harmless by-products, and there are ways to prove that you have removed the contaminants. Second, whether it will affect the environment or endanger the disinfection personnel when disinfecting protective clothing. Finally, it is important to know if protective clothing has lost its protective properties after exposure to contaminants or disinfection.
Repeated use of protective clothing is usually applied in the following situations: regular exposure to known pollutants; repeated wear, exposure and disinfection will not affect the performance of protective clothing; there are effective disinfection methods. Limited use of protective clothing is usually applied in the following situations: Unknown exposure environment, or multiple, simultaneous exposure to different hazards; No effective disinfection method; Disinfection process is effective, but may endanger the protective clothing's defensive characteristics or endurance Sex.
When choosing a limited or repeated use of protective clothing, consider the cost of each use. Repeated use of protective clothing is usually expensive but has a long life. However, maintenance costs (including disinfection, inspection, storage, loss or damage) are also high. Limited use of protective clothing is usually relatively inexpensive and has a relatively short life. In addition, consider the following two points: Discard contaminated protective clothing in accordance with applicable laws and regulations; inspect each time before using protective clothing; if it is damaged or fails, it must be promptly repaired or eliminated.
4. Reliable barrier protection and durability
Companies should choose chemical protective clothing with barrier properties data. This data can be obtained and archived by the manufacturer. As it becomes more and more difficult to clean and store used chemical protective clothing, people no longer pay attention to the durability of chemical protective clothing, but tend to purchase limited-use chemical protective clothing that is inexpensive.
5. The right size
Select the appropriate protective clothing according to the manufacturer's size chart.
6. Easy to maintain and repair
Simple maintenance is the advantage of limited use of protective clothing. Since these protective suits are designed and priced to be used only once or for a limited number of times and then discarded, no special maintenance is required except for proper use and preservation. Conversely, protective clothing designed for repeated use must be cleaned and properly inspected after each use. Damaged areas need to be repaired or no longer used. The key to choosing a limited or repeated use of protective clothing is to know who has a low cost of use. Because cleaning and storing used protective clothing is a complex, time-consuming, and expensive task, the more cleaning times, the higher the cost.
7. Flexibility and weight
Minimal weight and maximum flexibility are very important for protective clothing. Because they affect the wearer's range of motion and work fatigue, as well as light weight, limited use of protective clothing is more advantageous than repeated use of protective clothing. At present, there are many companies and fire brigades in China that are using chemical protective clothing from Capricorn.
8. Correct choice of protective clothing
In enterprises, the correct choice of protective clothing should not be the work of the purchasing department, but should be the work of the occupational safety and health department. Of course, you can also consult relevant manufacturers and occupational safety and health experts.
9. Storage life
Storage life refers to the fact that chemical protective clothing may reduce or lose its protective properties over time. If protective clothing cannot pass visual inspections and stress tests, consider lowering it to training suits. It is the wearer's responsibility to ensure that all components of chemical protective clothing, including fabrics, valves, windows, gloves, zippers and seams are in good working condition and provide adequate chemical protection. If a protective suit cannot pass a visual inspection or stress test, it should be immediately eliminated.
Note: Failure to adequately inspect protective clothing can result in serious injury or death to the wearer. Do not wear chemical protective clothing that has not been visually inspected or pressure tested before use.
10. Temperature range used
Chemical protective clothing should be used within a certain temperature range. For example, the ResponderR and CPF series of protective clothing from Kepler can be used between -60°C and 93°C. However, it should be noted that although protective clothing can be exposed to liquids or ambient air at this temperature range, this temperature can cause personal injury. Because chemical protective clothing rarely provides or does not provide any thermal protection. Chemical protective clothing can withstand much higher temperatures than human skin, and -2°C can cause human body frostbite, while temperatures exceeding 46°C can cause the body to once burn.
Therefore, the choice of chemical protective clothing to consider the body can withstand the temperature. In addition, the anti-seepage parameters of most chemical protective clothing manufacturers are measured at 25 °C, so pay attention to the effects of different temperatures on hazardous chemicals.
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