Development of a disinfecting carbon dioxide cleaning process for sensitive materials using shoes for hygienically demanding fields as an example and of a commercially reprocessable model of a work shoe
AiF 14374 N
During the production and manufacturing of foods as well as pharmaceutical and cosmetic products, extensive hygienic measures have to be taken in order to prevent the consumers from possible health risks (good manufacturing practice, HACCP-method, IFS-standard). Therefore the continuously increasing hygiene requirements for work-wear coming in hygienically demanding areas have to be met. The standard DIN 10524 is a guideline for manufacturing, exploitation and reprocessing of work wear used in the food industry and ensures these quality requirements. Aim of the DIN 10524 is the avoidance of negative effects on food articles which can be caused by unsuitable work-wear. According to DIN 10524, shoes, boots or clogs are part of the work wear. When the work wear is reprocessed, a certain hygiene status must be guaranteed. According to DIN 10524 the cleaning of work shoes in private households is not compatible with quality management in hygienically demanding areas and does not guarantee a safe hygiene status of the shoes.
Companies with hygienically demanding areas will have future requirements on the hygiene of shoes. A safe and gentle disinfection process for shoes, however, has not existed yet. The problem could be solved by using the ecologically and economically advantageous liquid or supercritical carbon dioxide, which, due to the latest literature, works also disinfecting. Within the research project a disinfecting carbon dioxide cleaning process for sensitive materials using shoes for hygienically demanding fields as an example and a commercially reprocessable model of a work shoe were developed.
We thank the Arbeitsgemeinschaft industrieller Forschungvereinigungen e.V. (AiF) (Association of Industrial Research Organisations) for funding the project AiF 14374 N through a financial support by the Federal Ministry of Economic Affairs.
The research report is available on request from FRT.