PVC Wood-Plastic Composite Quick-Install Wallboard Extruder Line

This PVC-WPC quick-install wallboard extrusion line is specially designed for producing waterproof, eco-friendly interior decorative wallboards. The SJZ series extruders (51/105 to 80/156) can produce wallboards with widths ranging from 180 mm to 600 mm, achieving a maximum output of 300–400 kg/h with low energy consumption and a compressed air requirement of only 0.6 m³/min. The line is equipped with YF downstream equipment to ensure stable and continuous production.

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Application

This production line manufactures PVC-WPC quick-install wallboards, widely used for:
Interior wall cladding in residential and commercial buildings (hotels, offices, kitchens, bathrooms)
Moisture-proof basement and bathroom wall systems
Quick-install modular homes and prefabricated buildings
Renovation projects requiring lightweight, easy-to-clean surfaces
Typical wallboard widths produced by each model:

Extruder Model	Max. Wallboard Width	Application
SJZ51/105	180 mm	Narrow decorative strips or small panels
SJZ65/132	300–400 mm	Standard interior wallboard sizes
SJZ80/156	600 mm	Wide panels, reducing installation seams

Advantages

Advantage	Details & Real Cases
High output, low energy consumption	The SJZ80/156 achieves 300–400 kg/h with only 55 kW main motor. At a Turkish wallboard plant, this model produced 380 kg/h continuously for 600 mm panels, saving 20% energy compared to competitive twin-screw extruders.
Flexible width range	From 180 mm to 600 mm – one line meets diverse market demands. A Russian client using SJZ65/132 simply changed adapters to produce 300 mm (residential) and 400 mm (commercial) panels.
Stable compressed air demand	All models require only 0.6 m³/min – no need for oversized air compressors, reducing auxiliary investment.
Moderate cooling water consumption	Water usage of 6–8 m³/h, optimized for closed-loop cooling systems. A Vietnamese factory recycled 7 m³/h for SJZ65/132, saving 35% on water bills.
Integrated downstream equipment	Paired with YF180, YF300/400, YF600 calibrators, haul-offs, cutters, and stacking racks – ensures perfect synchronization and very low scrap rate.

Process

To guarantee wallboard flatness, density, and impact resistance, we implement the following process checks:
A. Raw Material Verification
Test moisture content (<0.5%) and filler dispersion for PVC resin, wood fiber (≤150 mesh), and coupling agents.
B. Extrusion Process Monitoring
Temperature profile: 5 heating zones from feed section to die – deviation <±2°C, auto-corrected by PID controller.
Melt pressure sensor: Alarm triggered if pressure exceeds 35 MPa to prevent die swell.
Vacuum calibration: First calibrator vacuum set to -0.06 to -0.08 MPa for bubble-free, dense surface.
C. Online Wallboard Inspection (every 30 minutes)

Parameter	Test Method	Acceptance Standard
Width tolerance	Laser micrometer	±0.5 mm (for 600 mm panel)
Thickness	Dial gauge (5 points per meter)	±0.2 mm
Shore D hardness	Durometer	≥65
Weight per meter	Weighing per meter	±3% of target value

D. Finished Product Inspection (once per shift)
Water absorption (ASTM D570): <1.5% after 24h immersion – critical for bathroom panels.
Screw holding force: ≥600 N at panel edge joints.
Flame retardancy (UL94): V-0 rating (with 8 phr ATH additive).
Real case: A Polish client using SJZ80/156 achieved 99.3% first-pass yield after adopting our recommended online thickness measurement closed-loop feedback system.

Parameters

Extruder type	SJZ51/105	SJZ65/132	SJZ80/156
Production width(mm)	180	300/400	600
Motor power(Kw)	22	37	55
Type	YF180	YF300/400	YF600
Output(Kg/h)	80-100	150-200	300-400
Cooling water(m³/h)	6	7	8
Compressor air(m³/min)	0.6	0.6	0.6

Q1: What is the actual output of SJZ65/132 when producing 400 mm wallboards?
A: Under standard conditions (50% wood fiber, 35% PVC, 15% additives, melt temperature 170–180°C), actual output is 160–190 kg/h. By optimizing screw design and forced feeding, a Malaysian client reached 210 kg/h for 300 mm panels.

Q2: Can the same line produce both solid and hollow wallboards?
A: Yes, by changing the die (additional cost) and adjusting the cooling calibrator. SJZ51/105 is often used for hollow boards (2–4 cavities) up to 180 mm wide. SJZ80/156 can handle 600 mm wide solid boards (max thickness 10 mm) and hollow boards (max thickness 40 mm).

Q3: How often should the screw be maintained?
A: For PVC-WPC containing 30–40% wood fiber, we recommend screw inspection every 800–1000 operating hours. Our SJZ series conical twin-screw design allows easy screw extraction. A German client using low-abrasion rice husk filler ran for 1400 hours before needing re-chroming.

Q4: Why is compressed air consumption kept at 0.6 m³/min for all models?
A: Air is only used for calibrator vacuum breaking, wallboard marking, and cutter cylinder actuation – not for main conveying. Even the SJZ80/156 requires only momentary air pulses. A 2.2 kW air compressor (0.6 m³/min @ 0.6 MPa) is sufficient.

Q5: What cooling water quality is recommended?
A: Use softened water (pH 7–8, hardness <5°dH) to avoid scaling in the calibrating tank. SJZ65/132 requires 7 m³/h circulating water at 20–25°C. Scale deposits reduce cooling efficiency – an Italian user lost 15% output until installing a descaling filter.

Q6: Can I upgrade from SJZ51/105 to SJZ65/132 later?
A: The downstream YF180 cannot handle 300 mm panels. However, we offer a trade-in program – you keep the hauler, cutter, and only replace the extruder, die, and calibrator. A Brazilian company completed the upgrade in 3 days and recovered their investment within 6 months.

Q7: How to avoid warping of 600 mm wallboards?
A: Key factors: (a) Uniform cooling – set water temperature gradient: first calibrator 18°C, second calibrator 25°C; (b) Match panel exit speed with hauler (no tension); (c) 8-hour aging treatment before cutting. Our SJZ80/156 is equipped with a multi-zone cooling rack to eliminate residual stress.