Artificial Filament Washing/Drying TRIZ Cases

See how hydrogen peroxide treatment and oil additives achieve controlled whiteness in biodegrad

See how a five-membered cyclic quaternary ammonium salt polymer enables salt-free dyeing of alg

See how five-membered cyclic quaternary ammonium salt polymer modification enables alginate fib

See how modular washing zones with preliminary coagulation control filament structure and solve

See how a two-stage washing system with preliminary coagulation and modular wash liquor curtain

See how alternating water spray and nip-roll pressing removes organic solvent from acrylic fibe

See how alternating water spraying and nip-roll pressing removes organic solvent from wet-spun

See how counterflow washing baths with controlled linear speed variation prevent thread bundle

Halide acid ion exchange removes sulfate from never-dried polymeric fibers, cutting sulfur below 3 wt% to improve tenacity and processing economics.

A base wash followed by halide acid treatment removes sulfate sulfur from never-dried aramid copolymer yarn and raises tenacity.

Halide acid treatment displaces sulfate from never-dried polymer fibers, lowering sulfur content and improving high-tenacity fiber economics.

Base neutralization followed by a halide acid wash lowers sulfate in never-dried aramid copolymer yarn and supports higher tenacity.

Drying raw nylon cord to 2-5% moisture raises elastic modulus while limiting shrinkage, yarn breakage, and fatigue loss.

Finer aromatic polyamide filaments with controlled fibrils enable thinner composite cables and catheters without losing strength or flexibility.

Using hemicellulose-rich pulp creates lyocell fibers with higher water retention and viscose-like fibrillation without strength-loss pre-treatments.

A meltable solvent lowers PAN processing temperature for melt spinning, avoiding degradation while enabling lignin-based carbon fiber precursors.

Coaxial wet-wet electrospinning places coconut-oil PCM in a cellulose shell to absorb and release heat for stable temperature control.

Water-soluble, self-elutable spinning additives wash out of synthetic-fiber yarns with water, reducing detergents and wastewater contamination.

Self-eluting spinning additives support colored yarn production and wash out in an aqueous solution, reducing auxiliary chemicals and contaminated wastewater.

Cellulose insolubility limits PCM textile fibers; a coaxial spinneret and ethanol-water bath form durable, thermoregulating microfibers.

Continuous drying process for copolymer fibers uses staged temperature control to remove moisture while preserving tensile strength.

Replacing toxic phenol solvents with aliphatic acids enables continuous polyimide fiber production while removing harmful residual factors.

Halide washing extracts sulfuric acid from aramid copolymer yarn, lowering sulfur content below 3 weight percent while maintaining tenacity above 30 cN/dtex.

Jet washers treat each filament separately, eliminating surface tension webs that pull yarns together and cause breakage.

Multi-stage heating and basic washing remove sulfuric acid from aramid yarn, achieving over 60% hydrolytic strength retention.

Extended basic washing and heat treatment neutralize retained sulfuric acid in copolymer yarns, ensuring long-term hydrolytic stability.

An aqueous acid wash displaces sulfate anions from never-dried polymeric fibers to reduce sulfur content.

Segmented drying removes free water at low temperatures before high-temperature treatment, preventing tensile property loss.

A bicomponent yarn combines carbon-filled aramid with modacrylic to absorb arc energy.

Continuous high-speed dry spinning removes solvent from MPD-I yarn to achieve 0.4% shrinkage at 285°C.

Halide anions displace sulfate ions from never-dried polymeric fibers, reducing sulfur below 3.0 weight percent and improving tenacity.

Weak base treatment removes sulfur from never-dried imidazole fiber to resolve manufacturing cost versus fiber tenacity trade-offs.

Counterflow washing baths remove spinning solvent from acrylic fiber bundles while preventing adjacent yarn mixing and single-fiber fuzzing.

Treating wet cellulose fibers with phosphate solutions prevents carbon degradation during pyrolysis, achieving 70 to 95 percent carbon retention.

A sulfur-containing imidazole fiber incorporates ionic halide anions to boost tenacity.

Shear-aligned graphene oxide extrusion creates defect-free continuous graphitic fibers, eliminating high-energy carbonization steps.

Applying 0.2 to 0.8 cN/dtex drying tension to spun-dyed para-aramid filaments prevents nep formation and color fading in slivers.