US 12,416,054 B2
Apparatus for processing of leather
Thomas Gogsig, Bredebro (DK); Ilona Francisca Maria Coremans, Bredebro (DK); and Stojanka Petrusic, Bredebro (DK)
Assigned to ECCO Sko A/S, Bredebro (DK)
Appl. No. 17/607,188
Filed by ECCO Sko A/S, Bredebro (DK)
PCT Filed Apr. 29, 2020, PCT No. PCT/DK2020/050118
§ 371(c)(1), (2) Date Oct. 28, 2021,
PCT Pub. No. WO2020/221406, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. PA 2019 70267 (DK), filed on Apr. 29, 2019.
Prior Publication US 2022/0220570 A1, Jul. 14, 2022
Int. Cl. C14C 15/00 (2006.01); D06P 1/94 (2006.01); D06P 3/32 (2006.01)
CPC C14C 15/00 (2013.01) [D06P 1/94 (2013.01); D06P 3/32 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An apparatus for processing of leather objects, said leather objects being pre-treated at least by a tanning process, said apparatus comprising:
a process chamber,
a controllable compressor for pressurizing a fluid,
a pressure reducing member,
an inlet for a processing agent, and
a controller,
wherein:
said process chamber is configured in a form of a pressure chamber,
said controllable compressor for:
pressurizing the fluid is configured for introducing pressurized fluid into the process chamber from a source of said fluid, controlled by the controller, and
providing a predefined pressure in the process chamber in order to reach a supercritical state of said fluid,
said inlet for the processing agent is configured for facilitating introduction of said processing agent into the process chamber prior to, during, or subsequent to pressurization of the fluid,
said pressure reducing member is configured for, controlled by the controller, reducing the pressure of the pressurized fluid at least to reach a gaseous state subsequent to processing of said leather object such that a time for reduction of the pressure exceeds a predefined reduction period of between 5 min. to 2 hours.