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US 6,685,746 B1Granted
Impregnation of leather with micro-encapsulated material
AssigneePittards Public Limited Company
InventorRobert Painter
Life of this patent
Estimating the term…
Abstract
A material is impregnated into leather by incorporating the material into micro-capsules and then applying said micro-capsules to said leather material by means of a suitable process. A roller coating process is described in which the material is applied to a roller under which said leather material passes whilst compressed. Alternatively, the micro-capsules may be applied to said leather by drumming-in in a wet process.
Claims21
A method of impregnating leather with a material, which comprises the steps of:
- providing a micro-encapsulated supply of material, said material comprising a phase change material;
- applying said micro-encapsulated material to the flesh side of said leather using a roller which applies pressure to said leather, thereby to cause said micro-encapsulated material to be impregnated in said leather.
A method of impregnating leather with a material, which comprises the steps of:
- providing a micro-encapsulated supply of material;
- applying a first portion of said micro-encapsulated material to the flesh side of said leather using a roller which applies pressure to said leather, thereby causing said micro-encapsulated material to be impregnated in said leather;
- introducing a second portion of said micro-encapsulated material into a drum containing said impregnated leather and a liquid float, and drumming said micro-encapsulated material into said impregnated leather in a wet process, thereby causing said leather to be further impregnated with said micro-encapsulated material.
Dependencies are inferred from the claim text.