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This line delivers stable, high-output extrusion for uPVC window and door profiles, trims, skirting boards, cable trunking, blinds, curtain rails, picture frames, and edge protections. It runs continuously with tight dimensional control. The system supports single or co-extrusion, recycled cores under virgin skins, and dies tailored to regional standards and customer drawings, suitable for both standard and custom sections.
Conical twin-screw/barrel designs, barrel insulation, and high-efficiency drives lower energy use while maintaining melt quality and output. Custom options include:
SJSZ conical twin-screw extruders with tuned L/D and effective venting ensure consistent plasticization of uPVC with CaCO3 fillers. Automatic loaders, dehumidifiers, and gravimetric dosing improve accuracy for resin, stabilizers, and pigments, reducing batch variance and scrap.
Custom die designs match profile geometry and wall thickness and can support recycled or foamed cores. Multi-chamber vacuum calibration tables with thermostatic water loops stabilize dimensions and surface flatness at line speed.
Closed-loop spray cooling and caterpillar haul-off maintain straightness. A servo flying cutter or saw achieves accurate cut length. Automatic stackers support clean handling. Optional in-line printing/embossing and film lamination enable integrated finishing.
A Siemens PLC offers recipe management, alarm logging, and production data capture for repeatable setups. Remote diagnostics and optional sensors (melt pressure/temperature, thickness/width monitoring) support predictive maintenance and quality assurance.
Typical output ranges from 80–700 kg/h depending on model and profile geometry. Line speed is profile-dependent (about 0.5–6 m/min for window/door sections; higher for small trims). Profile width up to ~240 mm is supported, with multi-chamber calibration available.
Receive a complete plant layout with utility lists (power, chilled water, air) and upstream/downstream integration plans.
Each line is tested with your materials to validate output, dimensions, and surface quality. Parameters are saved as startup recipes.
Engineers complete installation, commissioning, and operator training, handing over stable production with documented procedures.
Rapid-access spares, screws and barrels, remote diagnostics, and preventative maintenance plans help sustain uptime.
Energy-saving drives, barrel insulation, optimized heating zones, and water-recirculation cooling reduce consumption. Safety interlocks, guarding, and CE-compliant circuits are standard. Optional energy meters support KPI tracking.
With more than 120 complete lines delivered annually and in-house machining, standard systems typically ship within 60 days. Located in Kunshan, Jiangsu, near Shanghai and Ningbo, we support efficient global logistics.
Available auxiliaries include high-speed mixers, automatic feeding systems, crushers, millers, chiller units, printing/embossing devices, and recycling/granulation lines for in-house regrind reuse.
With SJSZ65/132 or SJSZ80/156 and a suitable formulation, typical outputs are about 180–450 kg/h, depending on profile complexity and cooling capacity.
Yes. With proper filtration and co-extrusion, a recycled core can be used under a virgin skin to maintain surface quality and strength.
Through die optimization, multi-chamber vacuum calibration, controlled cooling, and matched haul-off speed.
Ready to discuss your drawings or request a quote? Contact our team to configure a line for your profiles.
