Security articles
AssigneeHoneywell International Inc.
InventorsThomas Y-T. Tam, Alfred Siggel, Samir Z. Abdalla, Jiunn-Yow Chen, Thomas Potrawa, Huy X. Nguyen
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Abstract
This invention provides security articles comprising fibers, threads and fiber sections (“dots”) possessing multiple verification characteristics. The fibers possess unique and difficulty duplicated combinations of complex cross-sections, components, and multiple luminescent responses. The many verifiable characteristics of the security fibers, threads and dots provide high levels of protection against fraudulent duplication of articles in which they are incorporated. The manifold security features provide means of tailoring specific identity characteristics for specific use and users.
Claims25
A security fiber comprising at least one synthetic polymer filament possessing multiple security elements comprising:
- a. a filament cross-section having a complexity factor of at least 5;
- and
- b. at least one component containing at least one luminescent substance;
- wherein said luminescent substance exhibits at least two luminescent spectral response peaks when excited by at least one wavelength selected from the region 200 to 2000 nanometers.
A synthetic polymer security dot possessing multiple security elements comprising:
- a. a cross-section complexity factor of at least 5;
- and
- b. at least one component comprising at least one luminescent substance;
- wherein the luminescent substance exhibits at least two luminescent spectral response peaks when excited by at least one excitation wavelength selected from the region 200 to 2000 nanometers.
Dependencies are inferred from the claim text.