Patent ID: 11912883
Assignee: ORELTECH LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC C  B  H | IPC B  C  H

Claim 6:
7. A method for forming a patterned metal film on a polyethylene terephthalate (PET) substrate, comprising:
treating the PET substrate with an Oxygen plasma with a exposure parameters comprising RF frequency of 40 MHz, power of 300 W, and Oxygen flow rate of 10 sccm, wherein the plasma is applied by an atmospheric plasma jet;
applying an ink composition on a surface of the substrate, wherein the ink composition is a solution that includes metal cations of AgNO3 in a concentration of 3 wt. % in a solvent mixture of water, 2-propanol, and DMSO at a ratio of 80: 15: 5 wt. % (water: 2-propanol: DMSO); wherein the ink composition is applied at a predefined pattern; and
exposing at least the applied ink composition on the substrate to a low-energy plasma, wherein the low-energy plasma is an atmospheric plasma operated according to a first set of exposure parameters; and wherein the plasma is Argon atmospheric plasma and the chamber is set with the exposure parameters comprising RF frequency of 40 kHz, power of 300 W, and Argon flow rate of 5 sccm; thereby forming a thin metal film having a thickness of 70 nm on top of the PET substrate.