Shoes comprising three-dimensional formed fiber product

• US 5,896,680 A
• Filed: 12/19/1996
• Issued: 04/27/1999
• Est. Priority Date: 12/22/1995
• Status: Expired due to Fees

• Current Assignee: North Carolina State University (University of North Carolina System)
• Original Assignee: Hoechst Celanese Corporation (Sanofi )
• Inventors: Nagel, John, Clark, Gregory M., Bessey, William E., Haas, Joseph S. W., Kim, Dai W., Oakley, Etheridge O. Jr.
• Primary Examiner(s): KAVANAUGH, JOHN T
• Application Number:
  US08/770,026
• Time in Patent Office: 859 Days
• Field of Search: 36/28, 36/3 B, 36/43, 36/55, 36/3 R, 36/3 A, 36/87
• US Class Current: 36/28
• CPC Class Codes: A43B 13/187 Resiliency achieved by the features of the material, e.g. foam, non liquid materials
• CPC Class Codes: A43B 13/26 projecting beyond the sole surface
• CPC Class Codes: B29C 70/085 the structure being deformed in a three dimensional configuration B29C53/805 takes precedence
• CPC Class Codes: B29C 70/222 the structure being shaped to form a three dimensional configuration
• CPC Class Codes: B29L 2031/507 Insoles

Abstract

Shoes for use in demanding applications, primarily athletics, are made from a three-dimensional fiber network that is semi-rigid and resilient. The fiber network is made from a textile fabric that has an array of projections made from the same fabric rising from the plane of the fabric.

Claims

1. A shoe comprising at least one layer of a three-dimensional fiber network, said three-dimensional fiber network having been made by deforming a two-dimensional textile fabric;

wherein said three-dimensional fiber network has as a base plane the plane of said two-dimensional textile fabric;

wherein said three-dimensional fiber network comprises a multiplicity of projections comprised of said two-dimensional textile fabric rising above said base plane;

wherein said projections are resilient, returning, substantially to their original shape after being compressed to 50% of their original height;

wherein said fiber network comprises thermoplastic filaments having a diameter of at least about 0.1 mm.

2. A shoe as recited in claim 1, wherein said projections have a shape selected from the group consisting of cones, truncated cones, pyramids having polygonal bases, truncated pyramids having polygonal bases, cylinders, prisms, and spherical elements.

3. The shoe as recited in claim 1, said projections having tops selected from the group consisting of apex points and flat tops, wherein said tops define a surface.

4. The shoe as recited in claim 1, wherein said thermoplastic filaments consist essentially of a thermoplastic material selected from the group consisting of polymers and copolymers and wherein said filaments are monofils.

5. The shoe as recited in claim 4, wherein said thermoplastic material has a melting temperature in the range of about 80°

C. to about 375°

C.

6. The shoe as recited in claim 4, wherein said thermoplastic material is selected from the group consisting of polyesters, polyamides, thermoplastic copolyetherester elastomers, poly(arylene sulfides), polyolefins, aliphatic-aromatic polyamides, polyacrylates, and thermotropic liquid crystalline polymers.

7. The shoe as recited in claim 4, wherein said thermoplastic material is selected from the group consisting of poly(ethylene terephthalate), polypropylene, polyethylene, nylon 6, and nylon 66.

8. The shoe as recited in claim 1, wherein said filaments in said three-dimensional fiber network cross over one another at intersections, wherein said filaments at said intersections are not bonded to one another.

9. The shoe as recited in claim 1, wherein the apparent density of said three-dimensional fiber network is less than about 10% of the density of said thermoplastic filaments.

10. The shoe as recited in claim 1, wherein said textile fabric also comprises depressions.

11. The shoe as recited in claim 1, said filaments having a diameter in the range of about 0.15 mm to about 0.7 mm.

12. The shoe as recited in claim 1, wherein said shoe comprises a midsole, wherein the midsole comprises said three-dimensional fiber network.

13. The shoe as recited in claim 1, wherein said shoe comprises a collar lining, wherein the collar lining comprises said three-dimensional fiber network.

14. The shoe as recited in claim 1, wherein said shoe comprises a tongue lining, wherein the tongue lining comprises said three-dimensional fiber network.

15. A shoe midsole comprising at least one layer of a three-dimensional fiber network, said three-dimensional fiber network having been made by deforming a two-dimensional textile fabric;

wherein said three-dimensional fiber network has as a base plane the plane of said two-dimensional textile fabric;

wherein said three-dimensional fiber network comprises a multiplicity of projections comprised of said two-dimensional textile fabric rising above said base plane;

wherein said projections are resilient, returning substantially to their original shape after being compressed to 50% of their original height;

wherein said fiber network comprises thermoplastic filaments having a diameter of at least about 0.1 mm.

16. The midsole as recited in claim 15, wherein said thermoplastic filaments consist essentially of a thermoplastic material selected from the group consisting of polymers and copolymers and wherein said filaments are monofils.

17. The midsole as recited in claim 16, wherein said thermoplastic filaments have a diameter in the range of about 0.4 mm to about 0.7 mm.

18. The midsole as recited in claim 16, wherein the heights of said projections range from about 3 mm to about 20 mm and are contoured like the bottom of a foot.

19. The midsole as recited in claim 16, wherein said projections have centers, wherein the spacing between the centers of said projections is in the range of about 0.5 cm to about 3 cm.

20. The midsole as recited in claim 15, said midsole further comprising one or more cushions in areas of the shoe subject to high impact.

21. The midsole as recited in claim 20, wherein said cushion is made of a polymeric foam selected from the group consisting of ethylene-vinyl acetate copolymer, polyurethane, latex, rubber, and mixtures thereof.

22. A heated shoe comprising the midsole recited in claim 15 and a heater in said midsole.

23. A shoe midsole as recited in claim 15, wherein said projections have a shape selected from the group consisting of cones, truncated cones, pyramids having polygonal bases, truncated pyramids having polygonal bases, cylinders, prisms, and spherical elements.

24. A lining material for use in a part of a shoe selected from the group consisting of the tongue and collar lining, said material comprising at least one layer of a three-dimensional fiber network, said three-dimensional fiber network having been made by deforming a two-dimensional textile fabric;

wherein said three-dimensional fiber network has a base plane the plane of said two-dimensional textile fabric;

wherein said three-dimensional fiber network comprises a multiplicity of projections comprised of said two-dimensional textile fabric rising above said base plane;

wherein said projections are resilient, returning substantially to their original shape after being compressed to 50% of their original height;

wherein said fiber network comprises thermoplastic filaments having a diameter of at least about 0.1 mm.

25. The lining material as recited in claim 24, wherein said thermoplastic filaments consist essentially of a material selected from the group consisting of a thermoplastic polymer and copolymer.

26. The lining material as recited in claim 25, wherein said thermoplastic filaments comprise poly(ethylene terephthalate).

27. A lining material as recited in claim 24, wherein said projections have a shape selected from the group consisting of cones, truncated cones, pyramids having polygonal bases, truncated pyramids having polygonal bases, cylinders, prisms, and spherical elements.