Hi Samantha, I just wanted to say I love your idea! I've previously been involved in research on converting used fishing nets into FDM 3D printing filament and thought it might be good to share findings (http://www.circularocean.eu/wp-content/uploads/2016/11/Proceedings-Paper-3D-Printing-Applications-for-Creating-Products-made-from-Recycled-Fishing-Nets.pdf_) The cleaning and pre-processing of post-use/consumer polymers is certainly a challenge! I've since found a couple of companies that are using a closed-loop chemical recycling process that produce recycled polymers of the same quality as virgin feedstocks - http://www2.teijin-frontier.com/english/sozai/specifics/ecopet-plus.html and http://www.econyl.com/regeneration-system/ Another challenge is the suitability of different polymers for FDM 3D printing, as there can be issues with warping and adhesion with some materials, although there seem to be new filaments on the market every day. Good luck with the challenge, it would be great to see your project up and running!
This is such a beautiful idea. I can imagine hotels and restaurants asking for butter in the shape of their logo! Could the butter be delivered in reusable moulds, which could be returned to the supplier on the next delivery maybe?
I love the design of the cup, it looks great. Have you thought about how you will make the paper or card water-proof? Currently most takeaway coffee cups have a plastic lining which is difficult to separate from the card and therefore can't be recycled. If the board ends up in paper recycling it can contaminate that stream too. Could you use a biodegradable bio-plastic and compost the cups?