Sole part, a moulding assembly and a manufacturing method for an article of footwear

Patent metadata

Field	Value
Publication number	US-12279668-B2
Application number	US-202117357247-A
Country	US
Kind code	B2
Filing date	Jun 24, 2021
Priority date	Jun 26, 2020
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

Embodiments herein disclose a primary sole part ( 10 ) having a foot facing surface ( 11 ) and a ground facing surface ( 12 ). The primary sole part ( 10 ) comprises a plurality of through-going holes ( 14 ), wherein the plurality of through-going holes extends in a vertical direction from the foot facing surface ( 11 ) to the ground facing surface ( 12 ). The foot facing surface ( 11 ) is configured to receive an injected sole material for attaching the primary sole part to a ground facing surface ( 12 ) of an upper ( 1 ).

First claim

The invention claimed is:

1. A footwear sole moulding assembly comprising:
a prefabricated primary sole part configured for forming part of an article of footwear, the prefabricated primary sole part being an outsole and having a foot facing surface, and a ground facing surface, wherein the prefabricated primary sole part comprises a plurality of through-going holes, wherein the plurality of through-going holes extends in a vertical direction from the foot facing surface to the ground facing surface; wherein the foot facing surface is configured to receive an injected sole material for attaching the prefabricated primary sole part to a ground facing surface of an upper; and
a primary mould part comprising a plurality of protrusions configured to mate with the plurality of through-going holes of the prefabricated primary sole part, the primary mould part configured to be arranged at the ground facing surface of the prefabricated primary sole part during a moulding process,
wherein the plurality of protrusions of the primary mould part are configured to protrude through at least one through-going hole of the plurality of through-going holes of the prefabricated primary sole part, so as to close the at least one through-going hole at the foot facing surface of the prefabricated primary sole part during the moulding process.

2. The footwear sole moulding assembly in accordance with claim 1 , wherein the plurality of through-going holes are arranged in parallel rows extending in a longitudinal direction of the prefabricated primary sole part.

3. The footwear sole moulding assembly according to claim 2 , wherein the through-going holes in neighbouring parallel rows are offset in relation to each other in a longitudinal direction of the prefabricated primary sole part.

4. The footwear sole moulding assembly according to claim 3 , wherein each through-going hole of the plurality of through-going holes in a first row of the parallel rows is offset by half a longitudinal length of the respective through-going hole in relation to a through-going hole of the plurality of through-going holes in a neighbouring second row of the parallel rows.

5. The footwear sole moulding assembly according to claim 1 , wherein the plurality of through-going holes are oblong and are arranged on the prefabricated primary sole part so that a longitudinal direction of the plurality of through-going holes extend in a longitudinal direction of the prefabricated primary sole part.

6. The footwear sole moulding assembly according to claim 1 , wherein the plurality of through-going holes have an oval shape.

7. The footwear sole moulding assembly according to claim 1 , wherein a radius of the plurality of through-going holes is in a range of 0.2 to 1.2 cm.

8. The footwear sole moulding assembly according to claim 1 , wherein the plurality of through-going holes are evenly distributed over the prefabricated primary sole part, so as to create a grid of openings in the prefabricated primary sole part.

9. The footwear sole moulding assembly according to claim 1 , wherein an outer circumference of each of the plurality of protrusions of the primary mould part is equal to or larger than an inner circumference of a corresponding through-going hole in the prefabricated primary sole part, so that injected material is prevented from entering into the respective through-going holes during injection moulding.

10. The footwear sole moulding assembly according to claim 1 , wherein each of the plurality of protrusions of the primary mould part have a first height equal to or higher than a height of the prefabricated primary sole part at a corresponding through-going hole of the prefabricated primary sole part.

11. The footwear sole moulding assembly according to claim 1 , wherein the footwear sole moulding assembly is configured to receive an injected material, the injected material defining a secondary sole part of the footwear.

Assignees

• Ecco Sko As

Inventors

• Jensen Frank

Classifications

• B29D35/148

  Moulds or apparatus therefor · CPC title

• B29D35/142

  Soles · CPC title

• B29D35/061

  by injection moulding · CPC title

• A43B13/122

  characterised by the outsole or external layer · CPC title

• A43B9/18

  moulded · CPC title