HIGH-HEELED SHOE COMPRISING A MAIN BODY PRODUCED BY A 3D PRINTING PROCESS

Abstract

The present invention relates to a high-heeled shoe comprising an insert (E) and a base body (G), wherein the base body (G) is produced as a single part via a 3D printing process. The insert (E) comprises a surface (EF) that has an upper side (EO) and a lower side (EU), wherein a heel (A) is formed on the lower side (EU). The base body (G) comprises a base surface (F) and an inner flap (I), wherein the base surface (F) has an upper side (FO), a lower side (FU) and a first cavity (H1), and the inner flap (I) has an upper side (IO) and a lower side (IU), wherein the lower side (IU) of the inner flap (I) is joined with the upper side (FO) of the base surface (F) of the base body (G) such that, between the lower side (IU), the upper side (FO) and the first cavity (H1), a second cavity (H2) is formed which forms an overall cavity (HG) with the first cavity (H1), wherein the overall cavity (HG) essentially corresponds to the shape of the insert (E). The insert (E) is positioned in the overall cavity (HG) such that the lower side (EU) of the surface (EF) of the insert (E) is completely contacted with the upper side (FO) of the base surface (F) of the base body (G), and the lower side (IU) of the inner flap (I) completely covers the upper side (EO) of the surface (EF) of the insert (E). The present invention furthermore relates to a process for producing the high-heeled shoe and to the use of an inner flap (I) for completely covering the upper side (EO) of the surface (EF) of an insert (E) in a high-heeled shoe.

Claims

1.-15. (canceled)

16. A high-heeled shoe comprising the following components an insert (E) which comprises a surface (EF) that has an upper side (EO) and a lower side (EU), wherein a heel (A) is formed on the lower side (EU), and a base body (G) which comprises a base surface (F) and an inner flap (I), wherein the base surface (F) has an upper side (FO), a lower side (FU) and a first cavity (H1), and the inner flap (I) has an upper side (TO) and a lower side (IU), wherein the lower side (IU) of the inner flap (I) is joined with the upper side (FO) of the base surface (F) of the base body (G) such that, between the lower side (IU) of the inner flap (I), the upper side (FO) of the base surface (F) and the first cavity (H1), a second cavity (H2) is formed which forms an overall cavity (HG) with the first cavity (H1), wherein the overall cavity (HG) essentially corresponds to the shape of the insert (E), wherein the insert (E) is positioned in the overall cavity (HG) such that the lower side (EU) of the surface (EF) of the insert (E) is completely contacted with the upper side (FO) of the base surface (F) of the base body (G), and the lower side (IU) of the inner flap (I) completely covers the upper side (EO) of the surface (EF) of the insert (E), and wherein the base body (G) is produced as a single part via a 3D printing process.

17. The high-heeled shoe according to claim 16, wherein the 3D printing process is a sintering process.

18. The high-heeled shoe according to claim 16, wherein i) the insert (E) comprises at least one first thermoplastic polymer (TP1), and/or ii) the insert (E) is produced via a 3D printing process or via an injection molding process.

19. The high-heeled shoe according to claim 16, wherein the lower side (IU) of the inner flap (I) is additionally irreversibly bonded to the upper side (EO) of the surface (EF) of the insert (E).

20. The high-heeled shoe according to claim 16, wherein the base body (G) comprises i) at least one second thermoplastic polymer (TP2), and/or ii) comprises an upper (S) in addition to the base surface (F) and the inner flap (I).

21. The high-heeled shoe according to claim 16, wherein the insert (E) and/or the base body (G) additionally also comprises at least one further component selected from the group consisting of reinforcers and additives.

22. The high-heeled shoe according to claim 16, wherein i) the high-heeled shoe also comprises at least one further component selected from the group consisting of a heel cap, a metal insert, an outer sole and an inner sole, and/or ii) the high-heeled shoe comprises an upper (S1) in addition to the insert (E) and the base body (G), wherein the upper (S1) comprises at least one third thermoplastic polymer (TP3) that differs from the at least one second thermoplastic polymer (TP2), and wherein the base body (G) and the upper (S1) are each produced via a 3D printing process.

23. The high-heeled shoe according to claim 16, wherein the at least one second thermoplastic polymer (TP2) differs from the at least one first thermoplastic polymer (TP1).

24. A process for producing a high-heeled shoe according to claim 16, comprising the following steps a) to c): a) providing an insert (E) which comprises a surface (EF) that has an upper side (EO) and a lower side (EU), wherein a heel is formed on the lower side (EU), b) providing a base body (G) which comprises a base surface (F) and an inner flap (I), wherein the base surface (F) has an upper side (FO), a lower side (FU) and a first cavity (H1), and the inner flap (I) has an upper side (TO) and a lower side (IU), wherein the lower side (IU) of the inner flap (I) is joined with the upper side (FO) of the base surface (F) of the base body such that, between the lower side (IU) of the inner flap (I), the upper side (FO) of the base surface (F) and the first cavity (H1), a second cavity (H2) is formed which forms an overall cavity (HG) with the first cavity (H1), wherein the overall cavity (HG) essentially corresponds to the shape of the insert (E), and c) positioning the insert (E) in the overall cavity (HG) such that the lower side (EU) of the surface (EF) of the insert (E) is completely contacted with the upper side (FO) of the base surface (F) of the base body (G), and the lower side (IU) of the inner flap (I) completely covers the upper side (EO) of the surface (EF) of the insert (E), wherein the base body (G) in step b) is provided as a single part via a 3D printing process.

25. The process according to claim 24, wherein the base body (G) in step b) is provided via a sintering process.

26. The process according to claim 25, wherein the provision of the base body (G) via a sintering process comprises the following steps b-1) and b-2): b-1) providing a layer of a sinter powder (SP) that comprises at least one second thermoplastic polymer (TP2), b-2) sintering the layer of sinter powder (SP) provided in step b-1).

27. The process according to claim 26, wherein the sinter powder (SP) comprises particles having a size in the range from 10 to 190 μm.

28. The process according to claim 26, wherein the sinter powder (SP) has a melting temperature (T.sub.M(SP)) in the range from 80 to 220° C.

29. The use of an inner flap (I) for completely covering the upper side (EO) of a surface (EF) of an insert (E) in a high-heeled shoe, comprising the insert (E) which comprises the surface (EF) that has an upper side (EO) and a lower side (EU), wherein a heel is formed on the lower side (EU), and a base body (G) which comprises a base surface (F) and the inner flap (I), wherein the base surface (F) has an upper side (FO), a lower side (FU) and a first cavity (H1), and the inner flap (I) has an upper side (TO) and a lower side (IU), wherein the lower side (IU) of the inner flap (I) is joined with the upper side (FO) of the base surface (F) of the base body such that, between the lower side (IU) of the inner flap (I), the upper side (FO) of the base surface (F) and the first cavity (H1), a second cavity (H2) is formed which forms an overall cavity (HG) with the first cavity (H1), wherein the overall cavity (HG) essentially corresponds to the shape of the insert (E), wherein the insert (E) is positioned in the overall cavity (HG) such that the lower side (EU) of the surface (EF) of the insert (E) is completely contacted with the upper side (FO) of the base surface (F) of the base body (G), wherein the base body (G) is produced as a single part via a 3D printing process.

30. An upper (S1) comprising at least one third thermoplastic polymer (TP3), for use in a high-heeled shoe, wherein the upper (S1) is produced via a 3D printing process.

31. The high-heeled shoe according to claim 16, wherein the 3D printing process is a a selective laser sintering (SLS) process or a multijet fusion (MJF) process.

32. The high-heeled shoe according to claim 16, wherein (i) the insert (E) comprises at least one polyamide (PA), and/or (ii) the insert (E) is produced via a an injection molding process.

Description

INVENTIVE EXAMPLE B1

[0113] A high-heeled shoe was produced by positioning an insert (E) in the overall cavity (HG) of a base body (G) which comprises a base surface (F) and an inner flap (I), wherein the base surface (F) has an upper side (FO), a lower side (FU) and a first cavity (H1), and the inner flap (I) has an upper side (IO) and a lower side (IU), wherein the lower side (IU) of the inner flap (I) is joined with the upper side (FO) of the base surface (F) of the base body such that, between the lower side (IU) of the inner flap (I), the upper side (FO) of the base surface (F) and the first cavity (H1), a second cavity (H2) is formed which forms an overall cavity (HG) with the first cavity (H1), wherein the overall cavity (HG) essentially corresponds to the shape of the insert (E). The insert comprises a surface (EF) that has an upper side (EO) and a lower side (EU), wherein a heel is formed on the lower side (EU). The insert was produced from polyamide 11 (PA 11) in a selective laser sintering process. The base body (G) was produced from thermoplastic polyurethane in a multijet fusion (MJF) process.

[0114] The insert (E) was positioned in the overall cavity (HG) such that the lower side (EU) of the surface (EF) of the insert (E) is completely contacted with the upper side (FO) of the base surface (F) of the base body (G), and the lower side (IU) of the inner flap (I) completely covers the upper side (EO) of the surface (EF) of the insert (E).

[0115] The high-heeled shoe was additionally reinforced with a metal insert and a heel cap. An outer sole was also applied by bonding.

[0116] A test in accordance with PFI 00/1002 was performed with the high-heeled shoe produced. Even after 100 000 loads with a force of ±120 N, no damage to the high-heeled shoe produced, especially to the heel (A), was detectable visually. This demonstrates the high mechanical stability of the high-heeled shoe according to the invention.

INVENTIVE EXAMPLES (B2a) and (B2b)

[0117] (B2a) An upper (S1) is produced via a selective laser sintering process. A polyamide 6 (PA6; Ultrasint® PA6 from BASF SE) is used to produce the upper (S1). The outer thickness of the upper (S1) is 0.7 mm, the diameter of the printed structure on the inside is 0.8 mm. The upper (S1) is illustrated in FIG. 6. [0118] (B2b) An upper (S1) is produced via a selective laser sintering process. A polyamide 6 (PA6; Ultrasint® PA6 from BASF SE) is used to produce the upper (S1). The outer thickness of the upper (S1) is 0.7 mm, the diameter of the printed structure on the inside is 0.8 mm. The upper (S1) is illustrated in FIG. 7.