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Antimicrobial properties on bright-colored plastic materials

Blankenhain, October 2013 – According information released by the Robert- Koch-Institute, 2,100 hospital-acquired cases of methicillin-resistant staphylococcus aureus (MRSA) infections have been reported in Germany in 2010. Due to this and other cases GRAFE Group has been working on the development of antimicrobial treatment of plastic materials for more than 10 years.


Traditional antimicrobial solutions using nanosilver, copper and silver ions alone or embedded in metal oxides and other fillers work well for thick-walled injection-molding and extrusion articles. One of the main problems by using these materials consists in the offering of bright colors. The inherent color resulting from these metals is dark or light grey making it very difficult to dye into bright colors. In view of the high costs created by the additional antimicrobial treatment of plastic articles in hospitals, rehabilitation centers and health facilities, it is clear that clients and converters are unwilling to forgo the important aspect of color choice.


In a search for a solution to this challenge, GRAFE has implemented a solution which eliminates these drawbacks. The new development is based on substances supplied by austrian company AMISTec located in Kössen, Tirol. The benefits include highly effective and long-lasting antimicrobial and even algicide properties, a wide spectrum of activity and no induction of resistance so far. It is just as effective against multi-resistant pathogens such as MRSA, VRE and ESBL. The active substances are not based on nanoparticles and can not be activated by sweat or proteins. One of the most important nice-to-have is that plastic materials containing these substances can be bright colored.


Clients who are interested in an initial evaluation and implementation of this technology can take advantage of the service and support offered by GRAFE and AMISTec for initial sampling and lab testing (including antimicrobial treatment ) prior to serial production.


GRAFE at the K2013 in Düsseldorf: hall 6, stand E75


The range of products at GRAFE Advanced Polymers GmbH includes a wide selection of functional plastic compounds in addition to color and additive masterbatches. One of the largest research and development departments in the industry works on the newest technologies to equip plastics with intelligent functions. The GRAFE Group was founded in 1991 and today has three business divisions: Color Batch, Additive Batch und Polymer Technology. More than 200 staff develop and produce at the state of the art facility in Blankenhain (Thuringia) in the heart of Germany for the domestic and international market. The group is certified in accordance with DIN EN ISO TS 16949:2009 and DIN EN ISO 9001/2008. Information at:


Press contact

GRAFE Advanced Polymers GmbH
Sarah Weber-Liel                   Tel. ++49-36459-45-216
Waldecker Str.21                   Fax ++49+36459-45-123
99444 Blankenhain               This email address is being protected from spambots. You need JavaScript enabled to view it.


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