Home/Health and Safety, Purchase Guide/Principle and scope of application of anti-static safety shoes

Anti-static shoes are a kind of work shoes worn in the production workshops and advanced laboratories of microelectronics industries such as electronic semiconductor devices, electronic computers, electronic communication equipment and integrated circuits to reduce or eliminate static hazards. Anti-static shoes can direct static electricity from the human body to the earth, thus eliminating static electricity from the human body, and also effectively inhibit the dust generated by personnel walking around in clean rooms. They are suitable for pharmaceutical plants, food factories, clean workshops in electronic plants, laboratories, etc.

Anti-static shoes are protective shoes that eliminate the electrostatic active gathering of the human body and also prevent the electric shock of the current below 250V. This product is produced with reference to GB4385-1995 standard. Mainly suitable for preventing the human body with static electricity and may cause combustion, explosion and other static hazards of all places (such as petroleum, chemical, coal, printing, rubber, medical, purification, electronics and other industries of the workplace).

Anti-static shoes and conductive shoes should not be worn at the same time when wearing insulated woolen thick socks and insulated insoles, and it is prohibited to use anti-static shoes as insulated shoes. The place where anti-static shoes are used should be an anti-static ground, and the place where conductive shoes are used should be a ground that can conduct electricity, to achieve a good.

Anti-static shoes should be used in conjunction with anti-static clothing, pay attention to the cleanliness of the product, waterproof and moisture-proof. Wearing process generally not more than 200 hours should be resistance test once, if the resistance is not within the specified range, it can not be used as anti-static leather shoes. Anti-static shoes should have a resistance of between 100K ohms and 100M ohms.

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Anti-static safety shoes are generally divided into two categories. One type of anti-static safety shoes is suitable for use in clean rooms, clean workshops, pharmaceutical plants or laboratories and will therefore also be known as dust-free shoes.The principle is to channel the electrostatic charge of the body into the earth through the anti-static shoes, so that the staff will not be contaminated with dust when walking in the clean room, and also to avoid dust or electric charge on electronic equipment or instruments when assembling precision instruments;

the other type of anti-static safety shoes, the scope of application is more extensive, mainly used in gas stations, aerospace systems and military units, etc., the role is mainly to avoid flammable and explosive substances or vapours, because The role is mainly to avoid flammable and explosive substances or vapours, because of the danger of ignition and detonation caused by sparks caused by electrostatic charges, and generally leather upper anti-static safety shoes will be used.

Knowledge of anti-static shoes

Electrical performance protective shoes are used in PPE to protect the feet, including anti-static shoes, conductive shoes and electrically insulated shoes, which can prevent electrostatic injuries and electric shock injuries.

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Hazards of static electricity to the human body

Static electricity can cause psychological disorders, fear and accidents, as well as skin burns and dermatitis due to electrostatic shock. The main hazard of static electricity is that flammable and explosive accidents occur in industry, thus endangering the lives of operators and causing major damage to production facilities.

Electrocution injuries are common workplace accidents and can be divided into contact and non-contact electrical injuries. The former is mainly an electric current injury, which can damage the internal tissues of the body, such as the heart, respiratory system and nervous system. In the lighter cases, there is a sensation of pins and needles, shivering, spasms, increased blood pressure, irregular heart rate and coma; in the heavier cases, ventricular fibrillation, cardiac arrest, respiratory arrest and even death can occur. The latter is mainly an arc injury, which manifests as electrical branding, electrical burns, skin carbonisation, and in severe cases, deep penetration into muscles, bones and internal organs.

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Research into the physiology of human electrocution shows that the perceived current is 1.1mA for adult males and 0.7mA for adult females, while the escape current is 16mA for adult males and 10.5mA for adult females. when the electrocution current is greater than the escape current, the electrocution victim cannot actively escape from the power source and without external help, the electrocution time will be prolonged and the risk of death will occur. Hands and feet are the parts of the body most likely to be injured by electric current.

Nowadays, with the continuous development of the economy, many things have been further enhanced, of which how much do you know about the role of anti-static safety shoes, the principle and the areas of use? You should know that the use of anti-static safety shoes is still very widespread in life, so it is necessary to understand them.

1.anti-static

Anti-static shoes can eliminate the accumulation of static electricity in the human body and can prevent electric shock from the power source below 250V. Of course, it is necessary to consider safety shoes with insulated soles to prevent the hazards of induction or electric shock, and it is necessary to meet the requirements of GB21146-2007 PPE occupational footwear standard.

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2.Electrical insulation

Anti-static safety shoes can insulate the human foot from electrically charged objects to prevent protection from electric shock. The requirements must meet the GB12011-2009 foot protection standard for electrically insulated shoes.

3.Sole

Anti-static safety shoes are made of rubber, polyurethane, etc. The performance and hardness of the outsole of anti-static safety shoes are clearly defined by the state, and should be tested with folding and abrasion resistance testers and hardness testers. When choosing shoes, the sole must be flexible when pressed with your fingers, and feel non-sticky and soft when bent.

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Anti-static safety shoes can direct static electricity from the human body to the earth, thus eliminating static electricity from the human body, and also effectively inhibiting the dust generated by the movement of people in clean rooms. Anti-static safety shoes are a classification of safety shoe types suitable for pharmaceutical plants, food factories, clean workshops in electronics plants, laboratories, etc.

The anti-static safety shoes are made of PU or PVC material, which is a dissipative material, and the soles are made of anti-static and anti-slip material, which can absorb sweat and odour and achieve anti-slip and anti-static functions, and are formed in one piece with the upper, and then reinforced on the line. Can effectively leak static electricity, together with anti-static clothing to form a complete anti-static system.

Scope of application

1、Anti-static safety shoes are protective shoes that can eliminate the accumulation of static electricity on the human body and prevent electric shocks below 250V.

2、Anti-static safety shoes are mainly used to prevent the human body from being electrostatic and may cause combustion, explosion and all other places where electrostatic hazards exist (such as petroleum, chemical, coal, printing, rubber, medical, purification, electronics and other production enterprises’ work sites)

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3、 anti-static safety shoes and conductive shoes should not be worn at the same time when wearing insulated woolen thick socks and insulated insoles, prohibit the use of static shoes as insulated shoes.

4、The place where anti-static safety shoes are used should be an anti-static ground, and the place where conductive shoes are used should be a ground that can conduct electricity.

5、Anti-static safety shoes should be used in conjunction with anti-static clothing and attention should be paid to the cleanliness, waterproofness and moisture-proofing of the product.

Anti-static safety shoes and ordinary anti-static shoes are different, anti-static safety shoes with anti-static shoes anti-static function, but also with anti-smashing, anti-puncture performance, some special anti-static safety shoes and high temperature resistant protection.