Vacuum Sizing Tank for Plastic Pipe Extrusion

Vacuum Sizing Tank for Plastic Pipe Extrusion

Engineered for precise dimensional stabilization, this vacuum sizing tank delivers uniform cooling and controlled negative pressure to lock pipe OD and roundness immediately after extrusion. With multi‑zone vacuum chambers, optimized water circulation, and stainless steel construction, it ensures consistent sizing for PVC, PE, PP, and multilayer pipes while reducing warpage and improving surface quality.

Product Features

Distinctive Advantages

• Multi‑zone vacuum control: independently regulated chambers create stable negative pressure along the tank length, improving OD stability and roundness for thin‑wall and high‑speed lines.
• Optimized cooling hydraulics: high‑flow, low‑turbulence water distribution with adjustable spray rings and curtain inlets ensures uniform heat extraction without surface marking.
• Precision sizing sleeves: hardened stainless or chrome‑plated sleeves with polished bores minimize friction and support tight tolerances on cosmetic pipes.
• Hygienic, durable build: 304/316 stainless steel tank body, corrosion‑resistant fittings, and sealed doors improve longevity and keep the water circuit clean.
• Smart vacuum management: digital vacuum setpoints with PID regulation, vacuum buffers, and real‑time monitoring reduce pressure oscillations during start/stop events.
• Easy service & safety: full‑length access doors, sloped bottom for quick drain, interlocked covers, and integrated overflow/filtration for low maintenance.

Materials & Process Insight

• Polymer compatibility: PVC/uPVC, CPVC, PE (HDPE/MDPE), PP, and barrier/multilayer constructions.
• Thermal strategy: balanced cooling profile prevents residual stress; optional pre‑cool section moderates thermal shock for thick‑wall products.
• Surface quality: laminar water curtains and polished sleeves reduce micro‑scratches and melt smears, supporting glossy finishes.

Application Areas

Building & Infrastructure

• Pressure and non‑pressure water pipes, conduit/casing, irrigation lines, drainage pipes, and protective sleeves used in civil works.

Furniture & Interior

• Decorative conduit, cable management pipes, and appliance feed lines requiring clean surfaces and consistent OD.

Automotive & Mobility

• Washer and vacuum lines, wire harness conduits, sensor housings, and lightweight fluid pipes with tight dimensional control.

Industrial & Utilities

• Pneumatic/fluid transport pipes, instrumentation casings, telecom ducts, and OEM specialty pipes for process industries.

Technical Specifications

Capacity & Performance

• Pipe range: typical OD 16–160 mm (customizable to small micro‑pipes or larger diameters on request).
• Line speed: up to 2–30 m/min depending on material, wall thickness, and cooling configuration.
• Dimensional control: roundness and OD tolerance supported to industry standards when paired with calibrated sizing sleeves.

Tank & Vacuum System

• Length options: 6–9 m standard single tank; modular linking for extended stabilization.
• Vacuum chambers: 2–4 zones with independent setpoints; vacuum pumps with buffer tanks and silencers.
• Water system: stainless pump, adjustable spray rings, laminar curtains, inline filtration (≥100 μm), and plate/coil heat exchanger.

Controls & Integration

• PLC/HMI with digital vacuum readout, zone control, and water temperature/flow monitoring.
• Recipe storage for different pipe sizes/materials; alarm diagnostics and interlocks for covers and low‑level conditions.
• Connectivity: analog/pulse signals for line synchronization; optional Ethernet for SCADA/remote monitoring.

Energy & Utilities

• Electrical load: 3.0–7.5 kW depending on pump size, vacuum configuration, and cooling system.
• Water: closed‑loop or single‑pass options; recommended flow 3–12 m³/h based on tank size.
• Vacuum: oil‑sealed rotary vane or dry pump options sized per tank volume and target vacuum level.

User Recognition

Customer Results

• Irrigation pipe producer achieved tighter OD and roundness at higher line speeds by implementing multi‑zone vacuum control and laminar curtains.
• Telecom conduit line reduced surface blemishes and improved gloss with polished sizing sleeves and balanced cooling recipes.

Market Feedback

• Operators value the intuitive HMI, quick drain/clean features, and stable vacuum that simplifies start‑up and changeovers.
• Maintenance teams report lower fouling and faster service thanks to accessible filtration and corrosion‑resistant components.

Competitive Edge

• Superior dimensional stability at compact footprints, with modular length options to match productivity goals.
• Lower total cost of ownership through efficient pumps, clean hydraulics, and robust stainless construction.