Method for the production of a shoe, especially of a sports shoe

Patent metadata

Field	Value
Publication number	US-11425967-B2
Application number	US-201716766662-A
Country	US
Kind code	B2
Filing date	Nov 25, 2017
Priority date	Nov 25, 2017
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

The invention relates to a method for the production of a shoe (1), especially of a sports shoe. To provide an effective and cost-efficient method for the shoe production, the invention comprises the steps: a) Production of a shoe upper (2) and of a shoe sole (3); b) Joining of the shoe upper (2) and the shoe sole (3) and inserting the joined shoe upper (2) and the shoe sole (3) into a flexible container element (4) which can be closed in an air-tight manner; c) Air-tight closing of the container element (4) and evacuating of the container element (4), so that the container element (4) presses together the joined shoe upper (2) and the shoe sole (3) within the container element (4); d) Connecting the shoe upper (2) and the shoe sole (3) within the container element (4) with another; e) Venting of the container element (4) and taking out the connected shoe upper (2) and shoe sole (3).

First claim

The invention claimed is:

1. A method for producing a shoe, comprising the steps of:
providing a shoe upper and a shoe sole;
joining the shoe upper and the shoe sole and inserting the joined shoe upper and the shoe sole into a flexible container element, which can be closed in an air-tight manner,
wherein a shoe last is arranged within the shoe upper, and wherein the shoe upper and the shoe sole are placed in a negatively shaped holding part for due adjustment between the shoe upper and the shoe sole, and to hold the shoe upper and the shoe sole together, the negatively shaped holding part also being inserted into the flexible container element;
closing and evacuating the flexible container element, so that the flexible container element presses together the joined shoe upper and the shoe sole within the flexible container element;
connecting the shoe upper and the shoe sole within the flexible container element by applying a microwave radiation to a contact zone between the shoe upper and the shoe sole, wherein the microwave radiation is applied from outside the flexible container element; and
venting the flexible container element and taking the connected shoe upper and shoe sole out of the flexible container element.

2. The method of claim 1 , characterized in that the flexible container element is a bag of a resilient material.

3. The method of claim 1 , characterized in that the flexible container element is a plastic bag made of polyethylene.

4. The method of claim 1 , characterized in that the flexible container element is provided with a closure element for opening and closing the flexible container element.

5. The method of claim 4 , characterized in that the closure element is an air-tight zipper.

6. The method of claim 1 , characterized in that the shoe sole consists of a base body and an insert, wherein the base body and the insert are connected with one another before the shoe upper and shoe sole are joined.

7. The method of claim 6 , characterized in that an adhesive is provided between the base body and the insert.

8. The method of claim 1 , characterized in that the flexible container element is evacuated with an evacuation pump.

9. The method of claim 8 , characterized in that the connecting of the flexible container element with the evacuation pump is carried out via a valve element or pipe socket, which is provided at the flexible container element.

10. The method of claim 1 , characterized in that the application of the microwave radiation is carried out between 15 and 60 seconds.

11. The method of claim 1 , characterized in that the connecting of the shoe upper and the shoe sole is carried out by melting the material of the shoe upper and/or the shoe sole in a contact zone between the shoe upper and the shoe sole and letting the molten material fuse with adjacent material of the shoe upper and/or the shoe sole.

12. The method of claim 1 , characterized in that, prior to the joining of the shoe upper and the shoe sole, an adhesive is provided between the shoe upper and the shoe sole.

13. The method of claim 12 , characterized in that the adhesive is a hot-melt adhesive.

14. The method of claim 1 , characterized in that the connected shoe upper and shoe sole is cooled between 30 and 120 seconds.

15. The method of claim 1 , characterized in that the negatively shaped holding part is a deep drawn part.

16. The method of claim 1 , characterized in that the microwave radiation is emitted in a direction moving from the shoe sole toward the shoe upper.

Assignees

• Puma SE

Inventors

• Hsien-Teng Liu

Classifications

• A43D25/06 Primary

  Devices for gluing soles on shoe bottoms (A43D25/18, A43D25/20 take precedence) · CPC title

• A43B9/12 Primary

  Stuck or cemented footwear · CPC title

• A43D95/10

  Drying or heating devices for shoes · CPC title

• A43D25/20

  Arrangements for activating or for accelerating setting of adhesives, e.g. by using heat · CPC title

• A43D25/07

  using flexible diaphragm pressing devices · CPC title