Anti-microbial fiber and fibrous products

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber

Reexamination Certificate

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Details

C428S373000, C428S374000

Reexamination Certificate

active

06841244

ABSTRACT:
An anti-microbial and/or anti-fungal synthetic fiber that comprises various thermoplastic polymers and additives in a bi-component form in either a core-sheath or side-by-side configurations. The anti-microbial synthetic fibers comprise inorganic anti-microbial additives, distributed in certain areas to reduce the amount of the anti-microbial agents being used, and therefore the cost of such fibers. The fibers can incorporate anti-microbial additives so that they are not removed by repeating washing in boiling water and in dry clean cycles and become ineffective and conversely enhance access to the additives by washing or the like. The fibers comprise high tenacity polymers (e.g. PET) in one portion and hydrolysis resistance polymers (e.g. PCT) in another portion with the additives. The fibers can further be blended with non-anti-microbial fibers such as cotton, wool, polyester, acrylic, nylon etc. to provide anti-microbial finished fabrics. In one such embodiment, binder fibers are used which are mixed with other fibers.

REFERENCES:
patent: 3589956 (1971-06-01), Kranz et al.
patent: 4019844 (1977-04-01), Shiokawa et al.
patent: 4350006 (1982-09-01), Aozawa et al.
patent: 4525410 (1985-06-01), Hagiwara et al.
patent: 4775585 (1988-10-01), Hagiwara et al.
patent: 6037057 (2000-03-01), Hartzog et al.
patent: 01-14321 (1989-01-01), None
patent: 07-145514 (1995-06-01), None
patent: 10-60740 (1998-03-01), None

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