Anti-static Shoes

Antistatic footwear are personal protective equipment designed to safely channel static electricity accumulated on the user’s body to ground, thereby reducing the risk of electrostatic discharge (ESD). These shoes prevent the buildup of naturally occurring electrostatic charges on the human body through conductive sole materials and specialized inner layer structures, enabling controlled dissipation of the charge to the environment. This not only reduces electrical risks to workers but also protects sensitive systems from damage caused by static electricity.

Technical Characteristics

Antistatic footwear are designed and manufactured to maintain a specific range of electrical resistance. They must possess sufficient conductivity to prevent sudden electrostatic discharge while simultaneously allowing gradual transfer of charge to the ground. According to the Guide to Personal Protective Equipment published by the Ministry of Labour and Social Security of the Republic of Türkiye, this resistance range is defined as between 100 kiloohms (kΩ) and 1000 megaohms (MΩ). These limits aim to ensure the controlled release of static electricity, safeguarding both worker safety and the integrity of static-sensitive equipment. Products falling outside this resistance range may either fail to discharge adequately or generate sudden sparks, thereby creating safety hazards.

According to technical catalog data, polyurethane (PU)-based sole materials are commonly used in antistatic footwear, with carbon additives introduced to render them conductive. Carbon particles dispersed across the sole surface facilitate the transfer of electrostatic charge to the ground. Additionally, the use of conductive strips or threads in the inner lining ensures that charges accumulated on the interior surface of the shoe are conducted to the outer sole. This design provides uniform distribution and dissipation of static charge across the entire footwear, not just a single region. Such designs are critical for both personal protection and sustained ESD protection performance in industrial applications.

Antistatic Footwear (Generated by Artificial Intelligence)

Application Areas

Antistatic footwear are essential personal protective equipment in sectors where control of static electricity is critical. Their use is widespread in electronics manufacturing and assembly lines to prevent damage to integrated circuits and sensitive electronic components from electrostatic discharge. Similarly, in facilities producing explosive or flammable substances, antistatic properties are mandatory to reduce the risk of fire and explosion caused by static sparks. Even the smallest electrostatic discharge in such environments can lead to serious consequences for both worker safety and facility integrity.

Chemistry laboratories, military munitions production facilities, and healthcare institutions are other major areas where antistatic footwear are commonly used. In chemistry laboratories, control of static electricity is especially important due to the handling of volatile substances. In military munitions production, these shoes are considered standard equipment under measures to prevent electrostatic ignition. In healthcare and hospital environments, particularly in operating rooms and intensive care units, antistatic products are preferred to ensure equipment safety and reduce the risk of electromagnetic interference. In this context, antistatic footwear are not only essential for industrial safety but also an integral part of corporate risk management policies.

Testing Methods and TSE Standards

To determine the reliability and functionality of antistatic footwear, standardized testing procedures are applied under various national and international standards. The TS EN ISO 20344 standard defines general testing methods for footwear and serves as the primary reference for evaluating antistatic properties. Under this standard, samples are conditioned under specific humidity (25–30%) and temperature (23 ± 2 °C) conditions, followed by electrical resistance measurements under constant voltage. The current flow between the shoe sole and a conductive test surface is measured to assess compliance with international threshold values. This ensures that only products effectively protecting users against electrostatic discharge are brought to market.

The TS EN ISO 20345 standard, published by TSE, evaluates product performance not only in terms of electrostatic discharge but also with regard to physical protection. According to this standard, antistatic footwear are tested for multiple parameters including impact resistance, sole puncture resistance, toe cap strength, resistance to chemical liquids, and abrasion resistance. Given the mechanical hazards commonly encountered in industrial environments, it is insufficient for footwear to merely dissipate static charges; it must also provide protection against physical dangers such as falling heavy objects, sharp or cutting debris, and chemical splashes. These tests ensure that the footwear delivers comprehensive protection, addressing both ESD control and overall occupational safety.

Performance Under Laboratory and Workplace Conditions

The performance of antistatic footwear must be evaluated not only under laboratory conditions but also under real workplace environments. In Canberk Nuran’s 2016 comparative study, resistance values obtained in laboratory settings were compared with those measured in various workplaces, revealing that environmental variables—such as ambient temperature, relative humidity, and floor type—directly affect measurement outcomes. This indicates that certified products may experience performance degradation over time. Therefore, it is recommended that antistatic footwear undergo periodic testing throughout their usage lifecycle and that compliance certificates be updated based on assessments specific to the workplace environment.

In conclusion, antistatic footwear play a critical role in eliminating electrostatic hazards. When evaluated alongside the conductive materials used in their production, testing procedures compliant with TSE and ISO standards, and risk analyses tailored to their application areas, it becomes evident that these shoes are not merely a legal requirement but also an integral component of workplace safety culture.