Method for producing a shoe and shoe that can be obtained by said method

Patent metadata

Field	Value
Publication number	US-11553759-B2
Application number	US-201916972093-A
Country	US
Kind code	B2
Filing date	Jun 7, 2019
Priority date	Jun 8, 2018
Publication date	Jan 17, 2023
Grant date	Jan 17, 2023

Abstract

The subject matter of the present disclosure is a process for manufacturing a shoe comprising an outsole joined to the sole part of a first main liner comprising on its outer face at least two studs, and a first auxiliary liner, at least partially, in particular integrally, hot-melt, in a textile piece, covering at least part of the first main liner, the outsole, and the junction between the first main liner and the outsole, at least part or all of the first hot-melt auxiliary liner being melted and adhered to the first main liner and to the outsole.

First claim

The invention claimed is:

1. A process for manufacturing a shoe comprising the following steps:
(i) providing at least one main liner in a textile piece, having a sole part;
(ii) placing at least the first main liner on a preform;
(iii) joining an outsole to the sole part of the first main liner;
(iv) providing at least one first auxiliary liner in a textile piece, at least part or all of which is thermofusible and has a melting temperature T1 (° C.);
(v) arranging the first auxiliary liner on the first main liner and the outsole so as to cover, at least partially, the first main liner, the outsole, and the junction between the first main liner and the outsole;
(vi) subjecting the assembly comprising the first auxiliary liner, the first main liner, and the outsole, placed on the preform, to a heating temperature Tc greater than or equal to the temperature T1 so as to achieve melting of the thermofusible part or the entire first auxiliary liner;
(vii) removing the assembly from the preform and recovering the shoe.

2. The process for manufacturing a shoe as claimed in claim 1 , wherein the first auxiliary liner is in a unitary textile piece.

3. The process for manufacturing a shoe as claimed in claim 1 , wherein the thermofusible part of the first auxiliary liner represents at least 50% by mass of the total mass of said first auxiliary liner.

4. The process for manufacturing a shoe as claimed in claim 1 , wherein the outsole comprises on its outer face at least one projection projecting from the outer face, and wherein the sole part of the first auxiliary liner comprises at least one area adapted to receive, at least in part, said at least one projection projecting from the outer face of the outsole.

5. The process for manufacturing a shoe as claimed in claim 4 , wherein the at least one projection comprises a lower face configured to come into contact with the ground.

6. The process for manufacturing a shoe as claimed in claim 4 , wherein the process comprises a step of providing a second main liner having a sole part comprising at least one area adapted to receive, at least in part, said projection, the second main liner being arranged:
on the first auxiliary liner in step (v) such that the first auxiliary liner is disposed, at least in part, between the second main liner and the first main liner; or
on the first main liner in step (v) such that the second main liner is disposed, at least in part, between the first main liner and the first auxiliary liner.

7. The process for manufacturing a shoe as claimed in claim 6 , wherein it comprises:
providing a second auxiliary liner in a textile piece, at least part or all of which is thermofusible and has a melting temperature T2 (° C.); and
arranging in step (v) the second auxiliary liner on the second main liner and the outsole so as to cover, at least partially, the first main liner, the first auxiliary liner, the second main liner, the outsole, and the junction between the first main liner and the outsole;
the heating temperature Tc is greater than or equal to the temperature T2 in order to obtain the fusion of the thermofusible part or of the whole of the second auxiliary liner.

8. The process for manufacturing a shoe as claimed in claim 1 , wherein at least one of the sole part of the first main liner and the sole part of the first auxiliary liner comprises a thermofusible region whose melting temperature is less than or equal to the heating temperature Tc, said thermofusible region(s) being oriented opposite the outsole.

9. The process for manufacturing a shoe as claimed in claim 8 , wherein the sole part of the first main liner comprises opposite inner and outer layers, the outer layer being oriented opposite the outsole, in that the outer layer comprises said thermofusible region, and the inner layer comprises at least one non-thermofusible region.

10. The process for manufacturing a shoe as claimed in claim 4 , wherein the area(s) of the sole part of the first auxiliary liner that is/are adapted to receive at least in part one or more projection(s) of the outsole is/are a through-opening or a pocket.

11. The process for manufacturing a shoe as claimed in claim 10 , wherein at least one of the through-opening(s) and pocket(s) is formed by at least one of: during the textile construction of at least one of the first auxiliary liner, by stamping, and by fusion.

12. The process for manufacturing a shoe as claimed in claim 1 , wherein at least one of the liners selected from a list comprising: the first main liner and the first auxiliary liner comprises an instep region having left and right edges, and further comprises a temporary detachable textile piece of unitary textile construction with said at least one selected liner, said removable temporary textile piece comprising left and right edges in connection with the left and right edges of said instep region, respectively.

13. The process for manufacturing a shoe as claimed in claim 1 , wherein the first main liner and the first auxiliary liner are in a unitary textile piece.

14. The process for manufacturing a shoe as claimed in claim 1 , wherein the first main liner is in a unitary textile piece, the unitary textile piece also comprises an additional liner, and the first main liner and the additional liner are joined at foot insertion openings.

15. The process for manufacturing a shoe as claimed in claim 14 , wherein the additional liner is folded into the first main liner after step (vi) so as to form a comfort sock.

16. The process for manufacturing a shoe as claimed in claim 14 , wherein the additional liner is folded over the first main liner and forms the first auxiliary liner.

17. The process for manufacturing a shoe as claimed in claim 1 , wherein the outsole comprises a plurality of projections projecting from its outer face.

18. The process for manufacturing a shoe as claimed in claim 1 , wherein the first main liner comprises at least 80% by mass of its total mass one or more materials whose melting or degradation temperature(s) are higher than Tc.

19. The process for manufacturing a shoe as claimed in claim 1 , wherein the assembly comprises a first region in the vicinity of a foot insertion opening extending towards a forefoot area in which the first main liner and the second main liner are superimposed and substantially not joined.

20. A shoe for the practice of sport, obtainable by the implementation of the process as claimed in claim 1 , comprising a first main liner in a textile piece having a sole part, an outsole joined to the sole part of the first main liner and comprising on its outer face at least one projection, and a first auxiliary liner, at least partially thermofusible, in a textile piece, at least partially covering the first main liner, the outsole, and the junction between the first main liner and the outsole, at least part or all of the first thermofusible auxiliary liner being melted and adhering to the first main liner and to the outsole.

21. The shoe as claimed in claim 20 , wherein the outsole comprises one or more projections projecting from its outer face, and wherein the sole part of the first auxiliary liner comprises one or more areas adapted to each receive, at least in part, a projection.

22. The shoe as claimed in claim 20 , comprising a rear reinforcement element of unitary textile construction with the first main liner or the first auxiliary liner, said rear reinforcement element comprising melted thermofusible yarns.

Assignees

• Decathlon Sa

Inventors

• Ventenat Vincent

Classifications

• A43B13/223

  Profiled soles · CPC title

• A43B23/024 Primary

  Different layers of the same material · CPC title

• B29D35/146

  Uppers · CPC title

• B29D35/128

  Moulds or apparatus therefor · CPC title

• A43B23/042

  Uppers made of one piece (one piece slippers A43B3/106; one piece sandals A43B3/124) · CPC title