US 11,926,115 B2
Method for producing a sole of a shoe, in particular of a sports shoe
Mauro Bonin, Nuremberg (DE); Matthias Hartmann, Forchheim (DE); and Reinhold Sussmann, Scheinfeld (DE)
Assigned to PUMA SE, Herzogenaurach (DE)
Appl. No. 17/053,513
Filed by PUMA SE, Herzogenaurach (DE)
PCT Filed May 8, 2018, PCT No. PCT/EP2018/061935
§ 371(c)(1), (2) Date Nov. 6, 2020,
PCT Pub. No. WO2019/214815, PCT Pub. Date Nov. 14, 2019.
Prior Publication US 2021/0237383 A1, Aug. 5, 2021
Int. Cl. B29D 35/14 (2010.01); B29C 45/14 (2006.01); B29C 70/84 (2006.01); B29D 35/00 (2010.01); B29D 35/12 (2010.01)
CPC B29D 35/142 (2013.01) [B29C 45/14467 (2013.01); B29C 70/84 (2013.01); B29D 35/0018 (2013.01); B29D 35/122 (2013.01); B29D 35/128 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of producing a sole of a shoe, wherein the sole comprises a first sole part and a second sole part, wherein the first and second sole parts adjoin each other on a surface extending in a longitudinal direction (L) of the shoe and in a vertical direction (V), and wherein the first and second sole parts have sections on upper sides thereof which are arranged adjacent to each other and together form a flat surface, comprising the steps of:
producing the first sole part in a first mould or mould part by injecting, spraying, or pouring the sole material into a first mould cavity of the first mould or mould part, wherein a number of volume elements protrude into the first mould cavity and create cavities in the first sole part;
producing the second sole part in a second mould or mould part by injecting, spraying, or pouring the sole material into a second mould cavity of the second mould or mould part, wherein a number of the volume elements protrude into the second mould cavity and create cavities in the second sole part;
removing the first and second sole parts from the first and second mould or mould part after the first and second sole parts have solidified, and placing the first and second sole parts into a third mould, wherein the two sole parts are aligned with each other in such a way that the cavities are at least partially aligned with each other and extend over the entire width of the sole to be produced;
overpouring, overspraying, or overinjecting a joining material over at least one section of the first and second sole parts, wherein the sections of the first and second sole part over which the material is overpoured, oversprayed or overinjected adjoining each other, in order to join the first and second sole parts to each other.