US 12,389,961 B2
Functional leather product and a method for producing the same
Wilm Hofmann, Frankfurt am Main (DE)
Assigned to MERCURIUS SLG LTD, Hong Kong (CN)
Filed by Mercurius SLG LTD, Hong Kong (CN)
Filed on Mar. 15, 2022, as Appl. No. 17/695,365.
Claims priority of application No. 21162929 (EP), filed on Mar. 16, 2021.
Prior Publication US 2022/0295924 A1, Sep. 22, 2022
Int. Cl. A41D 19/00 (2006.01); B32B 3/10 (2006.01); B32B 7/12 (2006.01); B32B 9/02 (2006.01); B32B 9/04 (2006.01)
CPC A41D 19/0006 (2013.01) [B32B 3/10 (2013.01); B32B 7/12 (2013.01); B32B 9/025 (2013.01); B32B 9/047 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2307/202 (2013.01); B32B 2307/7145 (2013.01); B32B 2307/732 (2013.01); B32B 2437/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A functional leather product for a glove having a capacitive,
near field communication enabling, perceptible and/or protective function, the leather product comprising:
leather in form of a cut piece comprising at least in part a sandwich structure of at least two layers;
wherein said sandwich structure comprises:
a first layer, which comprises an upper split leather obtained by at least partially splitting said cut piece of leather parallel to its upper surface at a predetermined cross-sectional depth of maximum 4.95 mm; and
a second layer comprising a functional layer,
wherein the functional layer is attached at least in part to the first layer;
wherein the overall thickness of the first layer is in the range of from about 0.05 mm to 0.45 mm;
wherein the functional layer is a conductive silicon sheet or a conductive rubber sheet and the functional layer has an area of at least approximately 50 cm2; and
wherein the conductive silicon sheet or conductive rubber sheet has a surface resistivity of less than 1000 Ohm per square and/or a volume resistivity of less than 5 Ohm-cm.