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US 2026/0048580 A1Published application
Methods and systems for electrochemical polymers delamination
AssigneeOhio State Innovation Foundation
InventorsMelvin A. PASCALL, Elliot DHUEY
Life of this patent
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Abstract
Disclosed is a method of electrochemical delamination of polymeric films from metallic articles. Also disclosed are systems for achieving the same.
Claims21
A method comprising:
- a) providing an electrochemical cell comprising an electrolyte solution positioned within an electronically non-conductive vessel;
- wherein the electrochemical cell further comprises a cathode terminal and an anode terminal;
- b) positioning a metallic article into the electrolyte solution, wherein the metallic article has a first surface and a second surface, wherein at least one of the first or the second surfaces is coated with at least one polymeric layer having a predetermined thickness;
- and wherein the metallic article is coupled to the cathode terminal;
- c) applying a current to the metallic article for a first predetermined time, wherein the current has a predetermined value effective to substantially delaminate the at least one polymeric layer, thereby forming a delaminated polymeric layer;
- and
- d) collecting the delaminated polymeric layer, wherein a composition of the delaminated polymeric layer is substantially the same as a composition of the at least one polymeric layer.
4 more elements
(canceled)
A method comprising:
- a) providing an electrochemical cell comprising an electrolyte solution positioned within an electronically non-conductive vessel;
- wherein the electrochemical cell further comprises a cathode terminal and an anode terminal;
- b) positioning a metallic food container into the electrolyte solution, wherein the metallic food container is substantially empty of food items and has a first surface and a second surface, wherein at least one of the first or the second surfaces is coated with at least one polymeric layer having a predetermined thickness;
- and wherein the metallic food container is coupled to the cathode terminal;
- c) applying a current to the metallic food container for a first predetermined time, wherein the current has a predetermined value effective to substantially delaminate the at least one polymeric layer, thereby forming the delaminated polymeric layer;
- d) collecting the delaminated polymeric layer, and
- e) comparing a composition of the delaminated polymeric layer with a composition of a substantially identical polymeric layer coated on the at least one of the first or the second surfaces before it contacts the food item.
4 more elements
A system comprising:
- an electronically non-conductive vessel comprising an electrolyte solution and wherein the electronically non-conductive vessel comprises a cathode terminal and an anode terminal;
- and
- a metallic article configured to be positioned within the electrolyte solution and be coupled to the cathode terminal;
- wherein the metallic article is a food container comprising at least one polymeric layer on at least one surface of the metallic article and wherein the system is configured to delaminate the at least one polymeric layer and to form at least one delaminated polymeric layer, wherein a composition of the at least one delaminated polymeric layer is substantially identical to a composition of the at least one polymeric layer.
1 more element
Dependencies are inferred from the claim text.