Antistatic overalls technical presentations

Measures to prevent the accumulation of static electricity, as soon as possible by way of a static charge on the conducting objects, dispersed or leak out. Therefore, anti-static overalls should be selected with good conductive fiber fabrics, anti-static fabric currently used mainly in the following three kinds:

1 using the humidity dependence of the antistatic effect. By antistatic finishing, adding that in the spinning hydrophilic polymer (surfactant), the fabric easy to absorb moisture from the air, reducing table impedance, reduce static build-up, the timely release of body static.

(2) the use of a conductive fiber clothes. The fiber material is added an antistatic agent, and carbon black particles to become conductive fibers by blending, and cross, cross knitting, weaving or embedded woven methods to improve the conductivity of the fiber or fabric, to generate anti-static fabric, to achieve a charge Fugitive, textile static buildup.

3 in the amount of fibers mixed metal fiber blended fabric, the kind of fabric, good stability, resistance to washing. Special labor protection supplies are included in the directory of the "anti-static overalls" (GB12014-1989), is to prevent the accumulation of static clothing, anti-static fabrics for sewing, clothes for wearing a fire or explosion hazard. Antistatic fabric used mainly in the textile production process, the substantially homogeneously mixed with equal intervals or whole or in part of metal or organic antistatic conductive material or antistatic synthetic fibers, or a mixture interwoven .

Antistatic overalls technical requirements including structure, anti-static performance, strength three aspects. Clothing production structure that directly affect their anti-static effect, therefore, anti-static overalls design must ensure that:

1 Do not use metal garment accessories in general, you must use metal buttons, zippers, should strictly ensure that when wearing metal accessories are not directly exposed to avoid discharge sparks, fire, explosion.

(2) All clothing should use an anti-static cloth, do not use lining. You must use the lining (pocket, reinforced cloth, etc.), the exposed area should be less than full lining anti-static clothing exposed area within less than 20%; winter clothes or other special requirements for anti-static clothing, lining exposed area is exposed over all static clothing area of ​​20%, should be made mask with detachable lining. National standard anti-static properties Anti-static overalls antistatic properties, presents a certain resistance to washing conditions, one-piece garment electric charge requirements; implementation of special labor protection supplies safety signs, requested in the apparent position of Gasch durable special labor protection supplies safety signs.

Antistatic overalls place primarily for fire and explosion hazards. The gas explosion hazard criteria of explosive substances by frequency of occurrence, duration and degree of risk is divided into:

0 Area: Under normal circumstances, an explosive gas mixture continuously, frequently appear short or long existing sites.

1 Area: Under normal circumstances, explosive gas mixtures are possible places.

Two areas: Under normal circumstances, an explosive gas mixture can not occur only in unusual circumstances occur occasionally place a short time, is a gas explosion hazard of 0 region, a region, and the minimum ignition energy of combustible materials at 0.25 MJ of fuel combustion are alkane hydrocarbons, acrylonitrile, diethyl ether, hydrogen, carbon disulfide, furan, benzene, methanol.

Antistatic overalls antistatic properties have some durability, therefore, also need to choose anti-static overalls pollution in the workplace determined by washing requirements, select the appropriate level of anti-static overalls. Antistatic overalls for fire and explosion sites, so should normally choose to have flame retardant anti-static overalls for workers to provide more reliable protection. Speaking in similar types of work stations and the use of anti-static overalls, should also have the effect of anti-oil. Cotton overalls made to prevent electrostatic effect, but not necessarily be able to achieve the desired anti-static overalls one-piece garment electric charge is less than 0.6μC requirements, especially after washing, because the choice of washing and other reasons, which prevents electrostatic effect will decline, therefore, the choice of cotton fabric, anti-static overalls, particularly in the northern dry areas, we must be careful.

Dress Precautions

1 anti-static overalls must GB4385 prescribed anti-static shoes matching wearing.

2 It is prohibited to attach an antistatic clothing or wearing any metal objects. Need to carry tools should have anti-static, anti-spark function; Metal tools should be placed in anti-static overalls pocket is prohibited exposed metal parts.

3 wear off in explosive areas prohibit anti-static overalls.

4 in the vicinity of strong electromagnetic environment or bare areas with high-pressure, can not wear anti-static clothing.