PVC Pipe Vacuum Sizing Tank for High-Gloss, Tight-Tolerance Extrusion
Purpose-built for PVC and uPVC pipelines, this vacuum sizing tank stabilizes outer diameter and roundness right after the die using multi-zone vacuum control and uniform water cooling. Its polished sizing sleeves, laminar water curtains, and PLC-managed vacuum regulation deliver high-gloss surfaces, tight tolerances, and repeatable results at medium to high line speeds—ideal for pressure/non-pressure PVC pipes, conduits, and irrigation lines.
Product Features
Key Advantages
- PVC-optimized sizing sleeves: mirror-polished stainless or chrome-plated bores minimize friction and support glossy finishes on rigid PVC/uPVC.
- Multi-zone vacuum stabilization: independently controlled chambers maintain consistent negative pressure along the tank, improving OD stability and roundness on thin walls.
- Laminar cooling architecture: low-turbulence water curtains and adjustable spray manifolds extract heat evenly without imprinting or haze.
- Smart vacuum management: PID-regulated setpoints with buffered vacuum reservoirs mitigate pressure oscillation during start/stop and recipe changes.
- Hygienic, durable build: 304/316 stainless steel tank, corrosion-resistant fittings, sealed doors, and sloped bottoms for rapid drain and easy cleaning.
- Maintenance-friendly design: full-length access doors, inline filtration, and quick-service points reduce downtime and keep circuits clean.
Materials & Process Highlights
- Polymer focus: rigid PVC/uPVC, CPVC; compatible with co-extruded stripes and multilayer constructions.
- Thermal strategy tailored for PVC: balanced cooling gradients prevent internal stress and whitening; optional pre-cool zones for thick-wall sections.
- Surface fidelity: laminar flow paths and sleeve finishes reduce micro-scratches and melt smears, preserving cosmetic-grade gloss.
Application Areas
Building & Infrastructure
- Pressure water supply pipes, drainage and sewage, electrical conduit/casing, telecom ducts, irrigation pipelines, and protective sleeves for civil works.
Furniture & Interior
- Decorative conduit, appliance feed lines, cable management pipes requiring clean OD and consistent roundness.
Automotive & Mobility
- Washer/vacuum PVC lines, harness protection pipes, sensor housings for auxiliary systems where dimensional stability is critical.
Industrial & Utilities
- Instrumentation casings, pneumatic/fluid transport pipes, OEM specialty PVC pipes for process industries and utilities.
Technical Specifications
Capacity & Performance
- PVC pipe OD range: typical 16–160 mm (custom options for micro-pipes or larger diameters).
- Line speed capability: up to 2–28 m/min depending on wall thickness, cooling configuration, and target tolerances.
- Dimensional control: supports industry-standard OD and roundness tolerances when paired with calibrated PVC sizing sleeves.
Tank & Vacuum System
- Tank length: 6–9 m standard; modular extension available for higher stability at speed.
- Chambers: 2–4 independently regulated vacuum zones with individual setpoints and isolation.
- Vacuum equipment: oil-sealed rotary vane or dry pumps, buffer tanks, silencers, and vacuum-level monitoring.
- Water system: stainless circulation pump, adjustable spray rings, laminar curtains, inline filtration (≥100 μm), plate/coil heat exchanger for temperature control.
Controls & Integration
- PLC/HMI with digital vacuum readout, zone control, water temperature and flow monitoring, alarm diagnostics.
- Recipe storage for pipe sizes/materials; line-speed following via analog/pulse signals for downstream synchronization.
- Safety: interlocked covers, E-stop circuits, low-level protection, and overflow management.
Energy & Utilities
- Electrical load: 3.0–7.0 kW (pump and vacuum configuration dependent).
- Water consumption: closed-loop or single-pass; typical flow 3–10 m³/h based on tank size and throughput.
- Vacuum level: configurable setpoints suited for PVC stabilization without surface deformation.
User Recognition
Customer Outcomes
- Municipal conduit producer reported tighter OD control and improved gloss after adopting laminar curtains and multi-zone vacuum regulation, enabling higher line speeds without quality loss.
- Irrigation pipe line reduced start-up scrap and stabilized roundness by leveraging PID vacuum control and polished sleeves, cutting rework by over 25%.
Market Feedback
- Operators highlight intuitive HMI, quick drain/clean cycles, and predictable vacuum behavior during changeovers.
- Maintenance teams value the corrosion-resistant build and accessible filtration that keeps fouling low and service times short.
Competitive Advantage
- PVC-specific design yields superior cosmetic finish and dimensional consistency at compact footprints.
- Lower total cost of ownership due to efficient pumps, robust stainless construction, and reduced maintenance intervals.