Cluster: Circular Products 2
Frankenhuis BV is a Dutch based company specialised in high technical recycling solutions of textile waste materials. The current focus of the company is on mechanical recycling, but has been expanded recently. Frankenhuis is now further exploring alternative technical recycling developments. An interdisciplinary approach could be very valuable in this process.
Therefore we have described 3 potential assignments which can be explored during this project, depending on the interests and composition of the final team.
Option #1: Content detection of “interfering substances” in post-consumer textile for chemical recycling
Chemical recycling of different materials such as cotton, polyester and Nylon are very hot topics and THE future of textile recycling. But, there are still some bumps along the way.
By gaining more knowledge of the processes, we learn that collected post-consumer textile and also post-production waste streams can hold some components which no longer makes them suitable for these new chemical processes.
It is Frankenhuis’ task to know these components and find out ways to detect them from the large stream of textile waste. We are looking for systems which can be used on a large scale and can be implemented “in-line”.
The main questions in this challenging assignment will be; which components will be showstoppers in the chemical recycling process? And how can we recognize and sort these materials “in-line”?
There is a demand for white, recycled, post-consumer cotton for the production of value paper. This industry is willing to pay a good price for grounded, clean cotton. The only showstopper to implement post-consumer textile in value paper is the use of fluorescent colouring. Value paper – the raw material for money – may absolutely not retain any fluorescent elements!
We would like to investigate which sub-flows of collected post-consumer textiles are expected to have these colourings, how we can detect and sort them, and if they can be removed.
We are working with two production-lines at the moment, which mechanically fiberize the textile. These production-lines work at high speed and thus need a lot of material input. This makes it difficult to perform a test with, for example, new/unknown materials.
In order to be able to estimate quickly and efficiently whether a material will be easy to process and what the output of the line will be, we want to build a scale model of our fiberization-line that is representative of our industrial process. This mini effiloché machine must give an accurate picture of the actual fiberization and that is precisely the challenge!