Antistatic chairs – technical information and details

GREF

Antistatic chairs and stools for static electricity protected areas.

Gref is Grendene Chairs department that has been created with the strong mission to promote and guarantee safety for people exposed to electrostatic discharges in EPA areas.
Gref antistatic chairs and stools are engineered and manufactured complying the international standard IEC 61340-5-1, so that they can be used in Electrostatic Protected Areas. They are indeed an essential and irreplaceable dissipative vehicle for electrostatic charges since they perform a dual function:
They prevent the generation of electrostatic charges on the sitting person’s body, despite one’s movements.
They guarantee the grounding connection to the floor discharging the static electricity that may accumulate on the person’s body.

WHAT IS E.S.D.?

What is E.S.D.?

Static electricity, or triboelectric charging, is the electric charge generated on a body through rubbing.
The main factor of this mechanism is given by a transfer of electrons from one body to another. Electrostatic charge is understood to be the quantity of electricity on a body that is electrified by rubbing.
The phenomenon with which the charge is wasted or with which the charge is neutralized is defined as electrostatic discharge, that is the transfer of charges from an electrified body to another body having an opposite sign charge.
Human body can behave as a conductor and, if isolated from the floor, it can accumulated an electrostatic charge that can be damaging for the operator as for devices and production process.
Chair is a dissipative vehicle for the electrostatic charges and it is essential and irreplaceable within the antistatic equipment, in the implementation of an anti-E.S.D. system, because it performs a dual function:
1. They prevent the generation of electrostatic charges on the sitting person’s body, despite one’s movements.
2. They guarantee the earth connection through the floor discharging the static electricity that may accumulate on the person’s body.
Through Gref department, we have always been engaged in the safeguard of human being quality of life, in its work environment, and of the quality of production process. We have created E.S.D. series: swivel antistatic chairs and stools using innovative materials.
These products are engineered and developed using materials with latest generation antistatic and dissipative properties. They are specifically build to be used in specific industrial electrostatic protected environments such as in the field of: electronics, chemicals, pharmacy, healthcare, plastics, textile.
All GREF E.S.D. line antistatic and dissipative chairs and stools models have passed characterization tests and comply IEC 61340-5-1 norms.
Thanks to their ergonomic and comfort characteristics, Gref antistatic and dissipative chairs can be used in environments that are different from the above mentioned ones or in all sectors, in which an electrostatic protected environment is required (EPA areas).

OUR INNOVATIVE MATERIALS

Innovative materials

Always on the cutting edge in the research of innovative products that are able to contribute to safeguard both human beings’ health and a perfect operation of equipment in workplace, GREF has developed for its products (chairs and stools) a range of upholsteries and materials for the moulding of seats and backrest, all of them with latest generation, permanent, antistatic and dissipative properties.

Fabric upholstered chairs and stools
The Bekinox fabric used for the upholstery of chairs and stools is in conductive polypropylene,  with inner special threads, which are able to optimally prevent and dissipate electrostatic discharges.
This particular manufacturing allows this fabric to prevent and to dissipate the static charge generated by the operator’s body rubbing, in order to completely avoid any damage to the product during its manufacturing, to the devices in the workspace and to the operator as well.
We can then declare that chairs and stools with this upholstery:

  • Are endowed with excellent, permanent antistatic dissipative qualities – IEC 61340-5-1 – IEC 61340-5-2
  • Prevent and dissipate electrostatic charges
  • Are endowed with color stability to sweat – UNI EN ISO 105-E04
  • Are endowed with excellent, natural, anti-bacterial qualities
  • Can be easily sanitized using adequate cleaning products
  • Keep their properties for the product entire lifecycle
  • Have passed all tests that are required in Italian and international rules

Chairs and stools with moulded polyurethane seat and backrest
Material used for seat and backrest have high-level antistatic dissipative qualities, it is water-repellent and offers an excellent comfort.
Chairs and stools with polyurethane seat and backrest, thanks to their characteristics, can be used in white rooms, in the healthcare sector and in all those electric industrial sectors in which an electrostatic protected area is required.

We can then declare that chairs and stools with seat and backrest in polyurethane:

  • Are endowed with excellent, permanent antistatic dissipative qualities – IEC 61340-5-1 – IEC 61340-5-2
  • Prevent and dissipate electrostatic charges
  • Are endowed with excellent anti-bacterial qualities – AATCC TEST METHOD 100
  • Aren’t subjected to abrasion – UNI EN ISO 12947-2
  • Keep their properties for the product entire life cycle
  • Can be easily sanitized using adequate cleaning products
  • Have passed all tests that are required in Italian and international rules

ANTISTATIC CHAIRS

Work Antistatic Chair14

Work is a particularly sturdy and solid antistatic chairs and stools line. It is specifically created to be inserted in high-intensity work environments. Its adaptability and technical characteristics make this E.S.D. chairs line particularly flexible and suitable for use in industrial work stations. Work E.S.D. series is available both in fabric and polyurethane and it complies to standard IEC 61340-5-1 requirements.

Comfort Antistatic Chair10

Comfort antistatic chairs and stools line is specifically created to satisfy the work requirements of production departments. Various combinations enable this antistatic chairs line to be adapted to one’s production needs. Comfort E.S.D. series is available with fabric upholstery or in polyurethane. Both our upholsteries ensure maximum safety and protection. Comfort E.S.D. antistatic chairs and stools line complies to standard IEC 61340-5-1 requirements.

Ergonomy Antistatic Chair9

Ergonomy is a new line of antistatic high – performance chairs and stools. The anatomical and enveloping backrest, equipped with lumbar support, guarantees an optimal support and enables the user to work in absolute comfort and with a correct posture, also for very prolonged work shifts. The innovative materials and the latest generation upholsteries guarantee the worker’s maximum safety and protection, as well as the perfect functioning of equipment. Ergonomy series complies to standard IEC 61340-5-1 requirements.