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12-19-2012

Antistatic Polypropylene Compound

Safe, Even When Colored

A newly developed, permanently antistatic polypropylene compound makes it possible to produce colored electrically conductive safety helmets for the construction industry (photo: Grafe)

Safety on construction sites is a primary concern, especially in areas subject to explosion hazards. Safety helmets are among the most important items of protective equipment in the construction industry and related trades. DIN EN 397 states that all activities and work in which a danger might be posed by falling, flying or swinging objects require the use of a safety helmet. This head protection should reduce or better still completely prevent any risk. In addition, helmets must be proof against thermal, chemical, and weathering stresses and withstand both elastic and plastic deformation. Such helmets are exposed to both low (down to -10°C) and very high temperatures (up to 50°C), which is the basic requirement for the ball drop and penetration tests. In this test, penetration resistance and safety against impact from pointed and round objects are tested.

In the past, permanently conductive materials were produced only in a standard black. Colored safety helmets quickly acquired an electrostatic charge because they could not be antistatic-modified. The newly developed, permanently antistatic-modified polypropylene (PP) compound from the Grafe Group, based in Blankenhain, Germany, now makes it possible to produce a colored electrically conductive helmet. The PP compound is supplied in the brilliant blue, yellow, white, red, and brown shades of Grafe’s Colorstat range. The PP material has been specially developed for lightweight construction and can be enhanced with additional design elements in 2-component injection molding. These include, for example, luminescent plastic elements that glow in the dark without an additional light source. It should always be remembered that a safety helmet can save lives.

Company profile

Grafe Advanced Polymers GmbH

Waldecker Straße 21
DE 99444 Blankenhain
Tel.: 036459 45-0
Fax: 036459 45-145

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