Back to results
US 8,465,800 B2Granted
Leather-like sheet and process for the production thereof
AssigneeTeijin Cordley Limited
InventorsKunihiko Sasaki, Toshihiko Sakamoto
Life of this patent
Estimating the term…
Abstract
The invention is to provide a leather-like sheet having a fine image drawn by an inkjet printing method, etc., on its surface and having practically sufficient physical properties. This invention includes a leather-like sheet including (i) a fibrous substrate and (ii) a porous layer thereon, the porous layer having a surface having open pores with a diameter of 1 μm or more and the porous layer having the surface having an image whose definition is 5 dots/mm or more, and a process for the production thereof.
Claims4
A process for the production of a leather sheet, which comprises the steps of:
- (i) forming a porous layer of an elastic polymer (1) on a fibrous substrate,
- wherein (i-a) the porous layer is formed by applying a solution of the elastic polymer (1) in an organic solvent onto the substrate and then removing the solvent by a dry method or a wet method, or (i-b) the porous layer is formed by applying a solution of the elastic polymer (1) containing thermally expandable capsules or inert gas onto the substrate,
- (ii) removing a surface layer of the porous layer by applying a solvent onto the surface of the porous layer, to form open pores in the range of 100 to 3,000 per cm2 on the surface, and
- (iii) forming an image comprising a pigment ink on the porous layer surface provided with the open pores, by an inkjet printing method.
1 more element
Dependencies are inferred from the claim text.