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Export Porous Customizable High-Strength and High-Precision Spandex Spinneret1
Other Equipment ComponentsPrecision MicroporesProcessing & Customization
Shanxi Jingwei Chemical Fiber Machinery Co.,Ltd
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Product Description Specification CategoryDetailed DescriptionBasic Information - Product NamePorous, Customizable, High-Strength & High-Precision Spandex Spinneret (core component for dry/wet spinning of spandex filaments)- Core FunctionExtrudes spandex polymer dope (dissolved polyurethane or polyurea-urethane) through precisely engineered micro-holes into a coagulation/baking zone, forming continuous, elastic spandex filaments; defines filament count, diameter, and mechanical uniformity- Typical Application Scenarios- Mass production of spandex yarns (e.g., 20D-1000D for textiles: underwear, sportswear, elastic bandages)- Customized spandex manufacturing (e.g., medical-grade anti-microbial spandex, high-elasticity industrial belts)- Dry-spinning (mainstream) and wet-spinning lines for spandex precursors- Matching Polymer DopePolyurethane/polyurea-urethane dope (solid content: 25-45%; solvent: dimethylacetamide (DMAc) or dimethylformamide (DMF); viscosity: 500-5000 cP at spinning temperature (25-60°C))Design & Structural Features - Material Composition- Base Material: High-purity stainless steel (316L or 304; corrosion resistance to organic solvents (DMAc/DMF), tensile strength ≥515 MPa, good thermal conductivity for uniform dope flow)- Premium Option: Titanium alloy (Ti-6Al-4V; lighter than steel (density: 4.51 g/cm3 vs. 7.93 g/cm3), higher corrosion resistance, ideal for high-end medical spandex)- Surface Treatment: Electropolishing (Ra ≤0.05 μm) or PTFE coating; reduces dope adhesion, prevents residue buildup, and ensures smooth filament extrusion- Porous Structure & Customization- Hole Count: 100-20,000 holes (customizable for tow sizes: e.g., 100-hole for 20D fine yarn, 10,000-hole for 1000D thick yarn)- Hole Arrangement: Hexagonal close packing (maximizes hole density for high yield) or linear array (for small-batch customization); spacing between holes: 0.1-0.5 mm (avoids dope mutual interference)- Cross-Sectional Shape: Circular (standard for general spandex), flat (for wide elastic tapes), or irregular (custom for specialized stretch properties); shape tolerance: ±0.002 mm- Micro-Hole Precision Parameters- Diameter: 5-50 μm (adjustable per dope viscosity and target filament fineness; precision tolerance: ±0.2 μm; ensures filament diameter CV (coefficient of variation) ≤2%)- Hole Taper: 0-5° (optional conical design; reduces dope flow resistance and improves filament uniformity)- Processing Technology: Laser drilling + electrochemical finishing; achieves ultra-smooth inner walls (Ra ≤0.03 μm) to minimize dope shear stress and surface defects- Temperature & Solvent Resistance- Embedded micro-thermal sensors (optional) for real-time temperature monitoring (25-60°C, accuracy ±0.5°C); prevents dope viscosity fluctuations- Material resistance: No corrosion or swelling after 1000+ hours of contact with DMAc/DMF at 60°C- Mounting & Sealing- Mounting: Flange-type connection with precision positioning pins (coaxiality tolerance ≤0.01 mm; ensures alignment with spinning die)- Sealing: Fluororubber (FKM) O-rings (resistant to solvents and 200°C; prevents dope leakage between spinneret and die)Performance Parameters - Operating Temperature Range20-60°C (matches dry/wet spinning process requirements; adjustable via external temperature control systems)- Operating Pressure Range0.5-5 MPa (withstands dope extrusion pressure; stable under cyclic pressure fluctuations without hole deformation)- Filament Uniformity- Diameter variation: ≤±2% (across all holes in one spinneret)- Elasticity consistency: Breaking elongation CV ≤3% (critical for spandex yarn quality)- Tensile strength variation: ≤±4%- Production Capacity0.1-10 kg/h per spinneret (depends on hole count, dope solid content, and spinning speed; e.g., 1,000-hole spinneret produces ~0.5-1 kg/h 100D spandex yarn)- Mechanical Strength- Compressive strength: ≥800 MPa (resists extrusion pressure without deformation)- Bending strength: ≥600 MPa (avoids breakage during installation/maintenance)Operational & Maintenance Info - Pre-Operation Preparation1. Ultrasonic cleaning with ethanol (30 min) to remove manufacturing residues; rinse with pure DMAc/DMF (matches dope solvent) to pre-wet holes2. Check hole alignment with spinning die (using a laser alignment tool)3. Preheat/cool to target operating temperature (20-60°C) and stabilize for 15-30 min- Spinning Process Control- Maintain constant dope pressure (0.5-5 MPa) via a precision metering pump- Monitor spinneret temperature (±0.5°C) to avoid dope solvent evaporation (dry spinning) or coagulation (wet spinning)- Avoid sudden pressure/temperature changes (prevents hole clogging or filament breakage)- Routine Cleaning- Online Cleaning: Purge with pure solvent (DMAc/DMF) at 0.8-1 MPa for 10-20 min after daily production- Offline Deep Cleaning: Soak in solvent + ultrasonic treatment (40 kHz, 60°C) for 1-2 hours; follow with deionized water rinsing and vacuum drying (50°C, 2 hours); repeat every 3-7 days (prevents residue buildup)- Inspection & Maintenance1. Weekly: Check hole diameter with a confocal microscope (replace if deviation exceeds ±5%)2. Monthly: Inspect surface smoothness (Ra >0.1 μm requires re-electropolishing)3. Quarterly: Test sealing O-rings (replace if hardening or cracking is observed)- Service Life12-36 months (316L stainless steel, standard use); 24-48 months (titanium alloy or PTFE-coated); extended by 30-50% with strict cleaning and pressure/temperature controlKey Advantages - High Porosity & CustomizabilityWide range of hole counts (100-20,000) and shapes (circular/flat/irregular) adapts to diverse spandex yarn specifications (20D-1000D) and application needs- Ultra-High PrecisionMicro-hole tolerance (±0.2 μm) and smooth inner walls (Ra ≤0.03 μm) ensure excellent filament uniformity (CV ≤2%), reducing yarn defects (e.g., thick/thin spots)- High Mechanical & Chemical Resistance316L/Titanium alloy material resists solvents and extrusion pressure, ensuring long-term structural stability and low replacement frequency- Easy CompatibilityStandard flange mounting and FKM sealing match most commercial spandex dry/wet spinning lines; minimal retrofitting required for existing production facilities- Low Operational DowntimeSmooth surface treatment and efficient cleaning protocols reduce clogging risks; embedded sensors enable real-time monitoring, minimizing unplanned shutdowns
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