US 12,263,619 B2
Recycling of a shoe
Tanyaradzwa Sahanga, Herzogenaurach (DE); Eva Hofmann, Herzogenaurach (DE); Andreas Seefried, Herzogenaurach (DE); and Juno Park, Herzogenaurach (DE)
Assigned to adidas AG, Herzogenaurach (DE)
Appl. No. 17/599,751
Filed by adidas AG, Herzogenaurach (DE)
PCT Filed Apr. 1, 2020, PCT No. PCT/EP2020/059285
§ 371(c)(1), (2) Date Sep. 29, 2021,
PCT Pub. No. WO2020/201370, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 10 2019 204 579.0 (DE), filed on Apr. 1, 2019.
Prior Publication US 2022/0143873 A1, May 12, 2022
Int. Cl. B29B 17/04 (2006.01); B29B 11/10 (2006.01); D04H 1/724 (2012.01); D04H 3/033 (2012.01); B29K 75/00 (2006.01); B29K 77/00 (2006.01); B29K 105/26 (2006.01); B29L 31/50 (2006.01)
CPC B29B 17/0412 (2013.01) [B29B 11/10 (2013.01); D04H 1/724 (2013.01); D04H 3/033 (2013.01); B29B 2017/042 (2013.01); B29K 2075/00 (2013.01); B29K 2077/00 (2013.01); B29K 2105/26 (2013.01); B29L 2031/50 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for recycling a shoe, the shoe comprising various components made from a same material class with varying densities, wherein a majority of a weight of the shoe is made from the same material class and wherein the material class is thermoplastic polyurethane or polyamide, the method comprising:
a. milling the shoe to obtain a plurality of particles, the particles having different material densities;
b. mixing the particles;
c. applying heat to the mixed particles to obtain a melt of molten particles; and
d. extruding the melt;
wherein the step of extruding comprises extruding an intermediate product adapted for the manufacture of a new shoe without further thermoplastic processing, and
wherein the intermediate product is a yarn, a film component, or extruded in a melt-blowing process to manufacture a melt-blown non-woven fabric.