Leather laminate having textured surface

Patent metadata

Field	Value
Publication number	US-11279110-B2
Application number	US-201816625618-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Jun 23, 2017
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

The present invention relates to a method for making a leather laminate having a textured surface, and leather laminates made by this method. The laminates comprise a leather layer bonded to a reinforcing fabric with an adhesive, the reinforcing fabric providing strength to the laminate. The method involves dry milling the laminate in humid air, during which the reinforcing fabric constrains the laminate causing the textured surface to form.

First claim

The invention claimed is:

1. A leather laminate comprising a reinforcing fabric bonded to a leather layer, said reinforcing fabric comprising high strength fibres and having an elongation at break of less than 5%,
wherein the leather laminate has an elongation at break of more than 5%, and
wherein the leather layer of the leather laminate has a thickness larger than 0.3 mm and less than 0.8 mm.

2. The leather laminate of claim 1 , wherein the reinforcing fabric has an elongation at break of less than 4%, and wherein the leather laminate has an elongation at break of more than 6%.

3. The leather laminate of claim 1 , wherein the reinforcing fabric has an ultimate tensile strength of above 5 kN/m.

4. The leather laminate of claim 1 , wherein the leather layer is top grain leather, with a flesh side of the leather being bonded to the reinforcing layer.

5. The leather laminate of claim 4 , wherein the leather layer is nubuck leather.

6. The leather laminate of claim 1 , wherein the surface of the leather layer has a non-uniform, pebbled grain structure.

7. The leather laminate of claim 1 , wherein the reinforcing fabric comprises at least one layer having parallel high strength fibres.

8. The leather laminate of claim 6 , wherein a grain size of the pebbled grain structure ranges from 0.5 mm to 5.0 mm.

9. The leather laminate of claim 6 , wherein a grain height of the pebbled grain structure ranges from 100 to 500 microns.

10. The leather laminate of claim 7 , wherein the at least one layer having parallel high strength fibres is embedded in a resin matrix.

11. The leather laminate of claim 7 , wherein the at least one layer having parallel high strength fibres has an ultimate tensile strength of above 1500 MPa.

12. The leather laminate of claim 1 , wherein the reinforcing fabric and the leather layer are bonded via an adhesive.

13. The leather laminate of claim 1 , wherein the leather laminate is embodied in a shoe.

14. A leather laminate comprising:
a bovine leather layer; and
a reinforcing fabric bonded to the leather layer, the reinforcing fabric having an elongation at break of less than 5%,
wherein the leather laminate has an elongation at break of more than 5%, and
wherein the leather layer of the leather laminate has a thickness larger than 0.3 mm and less than 0.8 mm.

Assignees

• Ecco Sko As

Inventors

• Mytaros Panagiotis

Classifications

• B32B2437/00

  Clothing · CPC title

• B32B2262/106

  Carbon fibres, e.g. graphite fibres · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B2305/08

  Reinforcements · CPC title

• B32B38/0012

  Mechanical treatment, e.g. roughening, deforming, stretching · CPC title