Methods for manufacturing super micro fibers

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...

Reexamination Certificate

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Details

C264S211160, C264S211220, C264S211230

Reexamination Certificate

active

06884378

ABSTRACT:
This invention relates to methods for manufacturing super-micro fibers to produce fibers having dimensions of between 0.003-0.0003 denier per filament. The manufacturing methods include the following steps: blending polyamide-polyester mixtures; passing said polyamide-polyester mixtures through single-path and twin-screw extrusion processes; spinning said polyamide-polyester mixtures; melting and dissolving said polyamide-polyester mixtures; and separating polyester compounds from said polyester-polyamide mixtures to form polyamide compound or super-micro fibers.

REFERENCES:
patent: 5545475 (1996-08-01), Korleski
patent: 409429 (1965-05-01), None
patent: 417893 (1966-04-01), None
patent: 516261 (1976-02-01), None
patent: 827626 (1996-01-01), None
patent: 417886 (1996-04-01), None
patent: 168750 (1991-09-01), None
patent: 177413 (1992-01-01), None

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