Methods for marking fibrous substrates
AssigneeNano-Tex, LLC
InventorsDavid A. Offord, William Ware, Jr.
Life of this patent
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Abstract
The present invention is directed to the preparation of fibrous substrates, including textiles, marked with colloidal particle nanobar codes, to the fibrous substrates so prepared, and to methods for detecting the nanobar codes on the fibrous substrates for use in quality control, counterfeiting, and the like.
Claims20
A particles binder for binding nanoscopic bar codes to a fibrous substrate, the particles binder comprising a polycarboxylate, petroleum distillate, one or more sorbitan monooleates, ammonium hydroxide, and water, and wherein the particles binder optionally further comprises a resin.
A treatment preparation for introducing nanoscopic bar codes to a fibrous substrate, the treatment preparation comprising nanoscopic nanobar code particles, a fluorescent dye or fluorophore, a particles binder, and water.
A process for attaching nanoscopic bar codes to a fibrous substrate, the process comprising:
- mixing nanoscopic nanobar code particles with a fluorescent dye or fluorophore, a particles binder, and water to give a treatment preparation;
- introducing the treatment preparation onto the surface of a fibrous substrate;
- and
- drying the fibrous substrate;
- wherein the nanobar code particles are durably attached to the fibrous substrate and readily identifiable for reading.
A fibrous substrate comprising nanoscopic bar codes durably attached to the fibrous substrate and readily identifiable for reading.
Dependencies are inferred from the claim text.