Regional hemp signs - a demonstrably sustainable solution

Client: Max2 Sign and Design GmbH

Funding: Tyrolean innovation funding - initiative projects

Implementation period: March to July 2024

Project description:

Together with Tiroler Berghanf GmbH and ALPEX Technologies GmbH, Max2 Sign und Design GmbH is developing signs and sign holders made of hemp straw and PLA (polylactic acid) for hiking, running and mountain bike trails. In contrast to the currently used aluminium composite signs (Dibond) or aluminium signs, these materials offer a more ecological alternative as they are made from renewable raw materials. In addition, aluminium is very energy-intensive to extract and the frequently used aluminium composite signs are currently not recyclable. It can therefore be assumed that the new sign solution represents a significant ecological improvement on the current sign materials. In order to verify this assumption, Max2 commissioned the Environmental Engineering Department at the University of Innsbruck to carry out a life cycle assessment. The overall environmental impact of the hemp straw and PLA signs over their entire life cycle is compared with that of conventional signs made of aluminium or aluminium composite. In addition, CO2-intensive process steps are identified and suggestions for improvement are developed. The entire process chain is analysed - from the cultivation of the hemp to the production of the signs from hemp straw and PLA using the injection moulding process to the completion of the signs with a final coating for weather protection and the attachment of the fastening elements. This allows hotspots in the production process to be identified. Specific recommendations for action to reduce emissions will then be integrated into the production process.

Contact:

University of Innsbruck
Julika Knapp
Technikerstrasse 13
6020 Innsbruck
julika.knapp@uibk.ac.at