Technological watch

Huntsman and OESH Co-develop 100% Recyclable TPU-based 3DP Shoe Sole


OESH® Shoes has been evaluating how Huntsman’s thermoplastic polyurethane (TPU) materials can be used to create a 100% recyclable shoe sole via – with positive results.
Innovative Healthy Footwear for Women
Founded by Casey Kerrigan, OESH Shoes has been providing women with innovative, healthy footwear since 2011. As an internationally known researcher, who studied the effects of footwear on health, Kerrigan discovered that many common features of shoes can adversely affect posture and joints. Kerrigan subsequently created OESH Shoes to translate her research findings into the design of healthy shoes.
When OESH contacted Huntsman, seeking advice about the ideal material to use for 3D printing soles, Huntsman’s footwear team recommended materials that had the specific comfort and performance properties OESH desired. Keen to offer environmentally-conscious customers a fully recyclable shoe, Kerrigan and Huntsman worked together to evaluate the material and determine whether it could be shredded at the end of the shoe’s life cycle and .
Jason Smith, global innovation project manager at Huntsman, said, “As a business, we are committed to helping our customers meet their sustainability ambitions – whether that’s delivering products that require less energy to process or supplying materials that can be recycled back into new items at the end of their life. We are pleased to have worked with the team at OESH Shoes – giving them the means to create a fully recyclable shoe, which can have a positive impact on the environment, as well as on the wearer’s health.”
Unique 3D Printing Technique for Testing TPU
OESH put Huntsman’s TPU to the test – producing a series of soles using OESH’s unique , which creates parts directly from pellets. The soles were then recycled into pellets and put back into the 3D manufacturing process. The next step was to test the new recycled sole against those made from virgin materials. Results showed that the recycled sole had the same functionality as the original sole – with no drop-in performance properties.
Kerrigan said, “At OESH Shoes we are committed to making shoes that are not only the healthiest shoes on the planet, but also the healthiest shoes for the planet. We are constantly innovating and developing new technologies and manufacturing processes that minimize carbon emissions, toxins and waste. We are excited about our latest discovery – that using Huntsman’s TPU elastomers, OESH’s signature soles are now not only 100% healthy, but 100% recyclable.”



Publication date: 01/10/2020

Omnexus (news)

This project has been co-funded with the support of the LIFE financial instrument of the European Union [LIFE17 ENV/ES/000438] Life programme

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Last update: 2020-07-14