Methods for manufacturing super micro fibers
AssigneeNan Ya Plastics Corporation
InventorZo-Chun Jen
Life of this patent
Estimating the term…
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.
Claims19
A method for manufacturing super-micro fibers having dimensions between 0.003 and 0.0003 denier per filament comprising the steps of:
- (a) Blending polyamide-polyester mixtures containing the following:
- (i) 30-50% by weight mixture of polyamide compounds;
- (ii) 40-65% by weight mixture of terephthalic acid, ethylene glycol with diol and diacids or isophthalic compounds;
- and
- (iii) 5-10% by weight of affinity mixture containing terephthalic acid, ethlylene glycol and 5-sodium sulfodimethyl isophthalate compounds;
- (b) Performing single-path and twin-screw extrusion of said polyamide-polyester mixtures;
- (c) Spinning said single-path and twin-screw extruded polyamide-polyester mixtures;
- (d) Performing drawing processes of said single-path and twin screw extruded polyamide-polyester mixtures;
- and
- (e) Melting, dissolving and removing sea-phase polyester components from said polyamide-polyester mixtures to form island-phase, polyamide components or super-micro fibers having dimensions between 0.003 and 0.0003 denier per filament.
A method for manufacturing super-micro fibers having dimensions between 0.003 and 0.0003 denier per filament comprising the steps of:
- (a) Blending polyamide-polyester mixtures containing the following:
- (i) mixture of polyamide compounds;
- (ii) mixture of terephthalic acid, ethylene glycol with diol and diacids or isophthalic compounds;
- and
- (iii) 5-10% by weight of affinity mixture containing terephthalic acid, ethlylene glycol and ≦1% 5-sodium sulfodimethyl isophthalate compounds;
- (b) Performing single-path and twin-screw extrusion of said polyamide-polyester mixtures;
- (c) Spinning said single-path and twin-screw extruded polyamide-polyester mixtures;
- (d) Performing drawing processes of said single-path and twin screw extruded polyamide-polyester mixtures;
- and
- (e) Melting, dissolving and removing sea-phase polyester components from said polyamide-polyester mixtures to form island-phase, polyamide components or super-micro fibers having dimensions between 0.003 and 0.0003 denier per filament.
A method for manufacturing super-micro fibers having dimensions between 0.003 and 0.0003 denier per filament comprising the steps of:
- (a) Blending polyamide-polyester mixtures containing the following:
- (i) mixture of polyamide compounds;
- (ii) mixture of terepthalic acid, ethylene glycol with diol and diacids or isophthalic compounds;
- and
- (iii) affinity mixture containing terephthalic acid, ethlylene glycol and ≦1% 5-sodium sulfodimethyl isophthalate compounds;
- (b) Performing single-path and twin-screw extrusion of said polyamide-polyester mixtures;
- (c) Spinning said single-path and twin-screw extruded polyamide-polyester mixtures;
- (d) Performing drawing processes of said single-path and twin screw extruded polyamide-polyester mixtures;
- and
- (e) Melting, dissolving and removing sea-phase polyester components from said polyamide-polyester mixtures to form island-phase, polyamide components or super-micro fibers having dimensions between 0.003 and 0.0003 denier per filament.
Dependencies are inferred from the claim text.