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AssigneePolyonics Corporation
InventorsMerwin F. Hoover, Phillip B. Reilly, Ann B. Salamone, Jan Vandebult
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A process is provided for fabricating metallic patterns such as resonant RF-tuned circuits on a polyolefin film such as polyethylene or polypropylene film. The film is processed under conditions such as to maintain its mechanical integrity by being passed through a solvent plasticizing bath, an etch bath to provide attraction sites and adhesion for catalytic metal deposition, a conditioning bath to improve catalyst adhesion and a catalyst bath to deposit a catalytic metal for electroless metal deposition. A negative image is printed on the film and an electroless metal deposit followed by an electrolytic metal plate are applied to the film to produce the desired metallic patterns. Optionally, prior to the printing step, an electroless metal deposit, with or without a thin electrolytic metal plate, can be applied to the total film surface. Thereafter, a negative or positive printed image is coated on the film. When these optional steps are utilized, the electroless metal deposit, thin electrolytic metal plate and printed image are selectively removed to leave the thick electrolytic metal plate on the electroless metal deposit in the form of the desired pattern.
A process for forming a conductive circuit on a thin polyolefin film substrate which comprises passing said polyolefin film sequentially through:
A process for forming a conductive circuit on a thin polyolefin film substrate which comprises passing said polyolefin film substrate sequentially through:
A process for forming a conductive circuit on a thin polyolefin film substrate, which comprises passing said polyolefin film substrate sequentially through:
A process for forming a plurality of resonant tag circuits on a thin polyolefin film substrate, each of said resonant tag circuits including a first spiral conductive path on a first surface of said substrate and second spiral conductive path on a second surface of said substrate, said spiral conductive paths forming inductors for each of said circuits and being aligned to overlap with each other to form the desired capacitance for each of said circuits which comprises passing said polyolefin film substrate sequentially through:
A process for forming a plurality of resonant tag circuits on a roll of a thin polyolefin film substrate, each of said resonant tag circuits including a first spiral conductive path on a first surface of said substrate and second spiral conductive path on a second surface of said substrate, said spiral conductive paths forming inductors for each of said circuits and being aligned to overlap with each other to form the desired capacitance for each of said circuits which comprises passing said thin film substrate sequentially through:
A process for forming a plurality of resonant tag circuits on a thin polyolefin film substrate, each of said resonant tag circuits including a first spiral conductive path on a first surface of said substrate and a second spiral conductive path on a second surface of said substrate, said spiral conductive paths forming inductors for each of said circuits and being aligned to overlap with each other to form the desired capacitance for each of said circuits which comprise passing said thin film substrate sequentially through:
Dependencies are inferred from the claim text.