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Product Description
PVC siding — also known as vinyl siding, exterior cladding, or plastic wall panel — has become the dominant exterior façade material across North America, Australia, and Europe, commanding over 30% of the residential siding market in the United States alone. Compared to traditional wood siding, fiber cement, and aluminum cladding, PVC siding offers zero-maintenance durability, 50+ year service life, and 40–60% lower installed cost per square meter. Chenxing Machinery delivers a complete turnkey PVC siding extrusion line engineered to produce deep-embossed cedar woodgrain panels, smooth-finish cladding, and WPC composite profiles — all from a single integrated production system.
This line is built around the SJSZ series conical twin-screw extruder with bimetallic barrel and 38CrMoAlA nitrided screw, paired with a precision coat-hanger sheet die, temperature-controlled embossing roll stack, and multi-zone vacuum calibration. With four model configurations spanning 80–450 kg/h output and panel widths from 100 to 500 mm, the system accommodates horizontal lap siding, vertical board-and-batten, soffit panels, and full trim accessory suites. For manufacturers seeking to expand from PVC pipe extrusion line or PVC roof tile extrusion line production into the high-margin siding market, this line shares common upstream mixing and material handling infrastructure, reducing total capital investment.
Browse our full product catalog for complementary downstream equipment, and explore our industry solutions for turnkey plant layout and production optimization.
| Parameter | SJSZ51/105 | SJSZ55/110 | SJSZ65/132 | SJSZ80/156 |
|---|---|---|---|---|
| Extruder Type | Conical Twin-Screw | Conical Twin-Screw | Conical Twin-Screw | Conical Twin-Screw |
| Screw Diameter (mm) | 51/105 | 55/110 | 65/132 | 80/156 |
| Main Motor Power (kW) | 18.5 | 22 | 37 | 55 |
| Max Output (kg/h) | 80–120 | 120–180 | 200–300 | 300–450 |
| Panel Width Range (mm) | 100–200 | 150–300 | 200–400 | 300–500 |
| Panel Thickness (mm) | 0.8–1.5 | 0.8–2.0 | 1.0–2.5 | 1.2–3.0 |
| Line Speed (m/min) | 0.5–2.0 | 0.5–3.0 | 0.5–3.5 | 0.8–4.0 |
| Calibration Table Length (mm) | 4,000 | 5,000 | 6,000 | 8,000 |
| Vacuum Pump (kW) | 2×2.2 | 2×2.2 | 3×2.2 | 4×3.0 |
| Installed Power (kW) | ~60 | ~80 | ~110 | ~150 |
| Total Line Length (m) | 18–22 | 22–26 | 26–30 | 30–35 |
| No. | Equipment | Specification | Qty | Key Technical Details |
|---|---|---|---|---|
| 1 | Screw-Type Powder Feeder | ZJF 300 | 2 sets | Anti-bridging screw design; prevents powder caking in hopper; adjustable feed rate synchronized with extruder speed |
| 2 | Conical Twin-Screw Extruder | SJSZ51/105 & SJSZ65/132 | 2 sets | Bimetallic barrel, 38CrMoAlA nitrided screw; Siemens/ABB motor; NSK gearbox; PLC HMI touchscreen; multi-zone PID temp control ±1°C; oil + air dual cooling |
| 3 | Sheet/Cladding Die Head | Custom coat-hanger manifold | 1 set | 40Cr steel body, chrome-plated flow channels; uniform melt distribution across panel width; multi-zone heater bands; adjustable lip gap |
| 4 | Embossing Roll Stack | Temperature-controlled, cedar pattern | 1 set | Precision-heated rollers (140–180°C); pneumatic nip pressure control (0.3–0.6 MPa); interchangeable pattern sleeves for oak, mahogany, smooth finishes; 0.3–0.8 mm texture depth |
| 5 | Stainless Steel Vacuum Calibration Table | 6 m, SUS304 | 1 set | Multi-zone vacuum with independent regulation; closed-loop water cooling 15–20°C; sizing plates for panel width/thickness control |
| 6 | Belt Haul-off Machine | 3 kW | 1 set | Pneumatic clamping; rubber grip belts; frequency-conversion speed synced with extruder via PLC |
| 7 | Auto-Cutting Machine | 2.2 kW, guillotine saw | 1 set | Encoder meter-counting; pneumatic clamp; ±1 mm cutting accuracy; chip collection system |
| 8 | Pneumatic Stacker | 6 m | 1 set | Pneumatic tilting mechanism; adjustable stacking length; automatic panel collection |
| 9 | Screw Loader | ZD-1 | 1 set | Automatic feeding from mixer to extruder hopper; sealed conveying to prevent contamination |
| 10 | High-Speed PVC Mixer | SRL-Z200/500 | 1 set | Hot mixing (110–120°C) 200 L / cold mixing (≤40°C) 500 L; complete PVC dry blend preparation cycle |
| 11 | Crusher | SWP400, 15 kW | 1 set | Blade-type granulator; reduces edge trim and off-spec panels to 8–12 mm chips for closed-loop recycling |
| 12 | PVC Pulverizer | SMF500, 45 kW | 1 set | Turbo mill; further mills chips to ≤1 mm powder; regrind reintroduced at 10–15% ratio into extruder feed |
Co-Extruder (SJ30/25 or SJ45/25 single-screw extruder): Applies 0.1–0.3 mm ASA/PMMA UV-resistant color cap layer onto siding surface; full RAL palette; 20+ year color retention. A high-output single-screw extruder configuration is available for higher line speeds.
On-line Hot Stamping: Decorative woodgrain foil transfer for premium textured finishes.
Upstream Material Handling: Plastic heating mixer, hopper dryer, pellet vacuum loader, and vacuum conveyor loader for fully automated raw material feeding and drying.
Downstream Auxiliary Equipment: Chiller for closed-loop water cooling, pipe coiler for accessory profile winding, plastic pelletizer machine for off-spec recycling, and comprehensive auxiliary machines for full-line automation.
A precision-heated plastic embossing machine roller applies authentic cedar grain texture at 0.3–0.8 mm depth into the hot panel surface immediately after die exit. Roller temperature (140–180°C) and nip pressure (0.3–0.6 MPa) are independently adjustable per pattern. Interchangeable pattern sleeves support oak, mahogany, and smooth finishes — a single roller set covers multiple siding aesthetics without tooling change. Pattern sleeve service life: 3,000–5,000 production hours before re-engraving.
Siding profiles are extruded with integrated positive-lock tongue-and-groove edges and nail hem flange. Lock geometry is engineered for wind uplift resistance up to 290 km/h (180 mph) per ASTM D5206. The bottom lock provides 12–15 mm expansion/contraction allowance, accommodating thermal movement across –30°C to +50°C without buckling or gapping. Starter strip, J-channel, corner posts, and undersill trim accessories share the same tooling platform.
Optimized for long-term outdoor exposure: TiO₂ 8–12 phr for UV opacity, impact modifiers (CPE/ACR 5–8 phr) for hail impact resistance per ASTM D3679, and Ca/Zn or organotin stabilizer for lead-free compliance. Finished panels resist color fade ΔE ≤3 after 2,000-hour QUV accelerated weathering. Charpy impact ≥8 kJ/m² at –30°C ensures cold-climate durability.
SJSZ series bimetallic screw and barrel (38CrMoAlA nitrided, surface hardness HRC 60–65) driven by Siemens PLC with recipe-based parameter storage for different panel widths and thicknesses. PID multi-zone control holds barrel temperature within ±1°C across all zones, ensuring consistent melt viscosity, uniform panel density, and ±0.05 mm thickness tolerance. Oil and air dual cooling enables rapid temperature adjustment during product changeover.
A single-screw extruder co-extrusion unit applies 0.1–0.3 mm UV-resistant ASA or PMMA color cap layer directly onto the siding surface through the die head. Available in the full RAL color palette, the cap layer delivers 20+ year color retention versus 10–15 years for TiO₂-only pigmented PVC. ASA capstock is standard specification for premium North American siding brands including CertainTeed, Mastic, and Kaycan.
Edge trim and off-spec panels enter the SWP400 crusher (15 kW), which reduces them to 8–12 mm chips. The SMF500 pulverizer (45 kW) further mills chips to ≤1 mm powder. This regrind is reintroduced at up to 10–15% ratio into the extruder feed without compromising panel impact strength or surface finish. The closed-loop system — complemented by a shredder-extruder recycling unit for post-consumer waste — reduces raw material cost by 8–12% and achieves near-zero production waste, aligning with circular economy mandates in EU and Australian markets.
Die head and calibration tooling are designed for fast swap between horizontal lap siding, vertical board-and-batten, soffit panels, and trim accessories. Typical changeover time: 2–3 hours. One complete line can produce an entire exterior cladding system — siding, starter strip, J-channel, corner posts, and undersill trim — requiring approximately 6–8 die sets. Tooling lead time is 30–40 days from customer profile drawing submission.
The complete 7-step manufacturing workflow transforms PVC resin and additives into finished, quality-inspected siding panels:
PVC Dry Blend Preparation — PVC resin + CaCO₃ 5–10 phr + TiO₂ 8–12 phr + impact modifier + stabilizer + processing aid + lubricant are hot-mixed in the SRL-Z200/500 plastic heating mixer at 110–120°C, then cooled to ≤40°C in the cold mixer. The finished dry blend is automatically conveyed to the extruder hopper via the ZD-1 screw loader.
Plasticization & Homogenization — Dry blend enters the SJSZ conical twin-screw extruder, where it is plasticized across multi-zone barrels (155–195°C) with oil + air cooling maintaining ±1°C precision. The fully homogenized melt enters the coat-hanger sheet die.
Embossing & Texturing — Melt exits the die as a flat sheet and immediately passes through the temperature-controlled plastic embossing machine roll stack. Cedar woodgrain texture is imprinted onto the hot panel surface at 140–180°C roller temperature, with texture depth controlled at 0.3–0.8 mm.
Calibration & Cooling — The embossed panel enters the SUS304 stainless steel vacuum calibration table (6 m, multi-zone vacuum, 15–20°C closed-loop water cooling via chiller). Precision sizing plates lock panel width, thickness, and profile geometry as the panel cools to ambient temperature.
Optional Co-Extrusion — When specified, a single-screw extruder co-extrusion unit injects ASA/PMMA cap layer into the die head, bonding the UV-resistant color surface to the PVC substrate during extrusion for premium weather-resistant finish.
Cutting & Stacking — The belt haul-off machine pulls the cooled panel at synchronized speed. The auto-cutting guillotine saw slices panels to preset length with ±1 mm accuracy using encoder-based meter counting. Finished panels are collected by the pneumatic stacker.
Recycling & Quality Inspection — Edge trim and rejects are processed through the SWP400 crusher → SMF500 pulverizer → regrind powder returned to mixer feed. A plastic pelletizer machine is available for off-spec panels requiring full re-pelletization. QC inspection covers dimensional tolerance, color ΔE, impact resistance, and heat shrinkage ≤3% at 80°C per ASTM D3679 before packaging.
A single SJSZ65/132 line produces horizontal lap siding (single, double, and triple course), vertical board-and-batten, soffit panels, starter strip, J-channel, corner posts, undersill trim, and fascia profiles. A complete exterior cladding system typically requires 6–8 die sets covering all these profiles. Panel widths range from 100 to 500 mm and thicknesses from 0.8 to 3.0 mm depending on the model selected. Lock geometry and nail hem are integrated directly into die design — no secondary machining required. Tooling lead time is 30–40 days from customer profile drawing submission. For manufacturers entering the siding market, we recommend starting with 3 core profile dies (4-inch double lap, dutch lap, and soffit) and expanding as distribution grows. Explore our industry solutions for phased investment planning.
PVC siding offers 40–60% lower material cost per square meter compared to fiber cement, with zero lifetime maintenance versus repainting every 5–7 years for engineered wood. Lifecycle comparison: PVC siding delivers 50+ year service life with no painting, caulking, or sealing; fiber cement requires repainting at 10–15 year intervals; engineered wood typically degrades within 20–25 years in humid climates. PVC siding provides approximately 3× the thermal insulation value of fiber cement (R-value ~0.61 vs ~0.20). It is fully recyclable at end of life. Lighter weight significantly reduces shipping cost — one 40-ft container holds approximately 2,500 m² of PVC siding versus ~1,200 m² of fiber cement. Read our technical articles and case studies for detailed ROI comparisons across markets.
Critical formulation thresholds include: TiO₂ ≥8 phr for UV opacity (ΔE ≤3 after 2,000h QUV); impact modifier 5–8 phr to achieve Charpy impact ≥8 kJ/m² at –30°C; heat reversion ≤3.0% at 80°C for 30 minutes; coefficient of linear thermal expansion ≤5×10⁻⁵ mm/mm/°C; Ca/Zn stabilizer 3–5 phr for lead-free compliance; tensile strength ≥35 MPa; flexural modulus ≥2,000 MPa. Our application engineers provide a base formulation for each target market and conduct joint trials at our factory. Visit about our factory to learn about our in-house material testing laboratory equipped with QUV chamber, impact tester, and spectrophotometer for pre-shipment formulation validation.
The plastic embossing machine roll stack is positioned immediately after the sheet die exit — imprinting woodgrain texture while the PVC surface is still above its heat deflection temperature. Operating parameters: roller temperature 140–180°C, nip pressure 0.3–0.6 MPa, texture depth 0.3–0.8 mm. Deeper embossing (0.8 mm) produces more realistic woodgrain realism and higher surface scratch resistance, but reduces Charpy impact strength by 5–10% compared to shallower 0.3 mm embossing due to localized stress concentration at pattern troughs. Roller temperature must be precisely controlled: too high (>185°C) causes surface gloss variation and PVC sticking to the roller; too low (<135°C) produces shallow, indistinct grain that fades after weathering. Pattern sleeves have a service life of 3,000–5,000 production hours before re-engraving is needed.
For the SJSZ65/132 configuration (most common export specification): total installed power is approximately 110 kW (extruder 37 kW + embossing roll 5 kW + haul-off 3 kW + cutter 2.2 kW + crusher 15 kW + pulverizer 45 kW + auxiliary motors). Actual average power consumption is 65–75 kWh during steady-state production. Cooling water requirement is 3–5 m³/h in closed-loop circulation via chiller. Compressed air demand is 0.6–0.8 MPa at 0.5–1.0 m³/min for pneumatic clamping and stacker actuation. Specific energy consumption: approximately 0.30–0.35 kWh per kilogram of finished siding. A vacuum conveyor loader reduces material handling energy by automating powder transfer. The closed-loop shredder-extruder recycling system recovers 8–12% of raw material cost, partially offsetting energy expenditure.
With over 20 years of specialization in plastic extrusion equipment, Chenxing Machinery has delivered complete PVC siding lines to manufacturers across 30+ countries including Egypt, Thailand, Malaysia, India, Russia, Turkey, Zambia, Algeria, and Indonesia. Our competitive advantages:
Proven formulations — Factory-tested PVC and WPC compound recipes for ASTM D3679, AS 4257, and EN 13245 compliance, validated in our in-house material testing laboratory. Visit about our factory for facility details.
Single-source integration — Complete line from plastic heating mixer to stacker, including all auxiliary machines, sourced and commissioned by one engineering team — no multi-vendor coordination.
Rapid die development — 30–40 day tooling lead time from customer profile drawing to trial; in-house CNC die manufacturing ensures exact replication of lock geometry and nail hem specifications.
On-site commissioning — Engineer deployment for installation, trial run, and operator training; remote post-installation support via video diagnostics.
Spare parts availability — Critical wear components (screws, barrels, calibrators, embossing sleeves, crusher blades) stocked for express dispatch; typical delivery 5–7 business days.
Read our technical articles and case studies and browse the full product catalog for complementary extrusion lines.
Step 1 — Inquiry: Send your target siding profile drawings, desired output (kg/h), and local market standards (ASTM AS EN) to ceo@cxsljx.com. Our engineering team evaluates technical feasibility within 24 hours.
Step 2 — Proposal: Receive a customized line configuration with 3D plant layout, complete equipment list (extruder + die + embossing + downstream), utility requirements, and FOB/CIF pricing — typically within 2–3 business days.
Step 3 — Trial & Approval: Visit our factory for a live production trial with your actual PVC formulation and profile design. Or send us your compound — we run the trial and ship sample panels for your laboratory evaluation.
Step 4 — Delivery & Commissioning: 45–60 day manufacturing lead time after order confirmation. Our engineers travel to your site for installation, commissioning, and operator training — ensuring your line produces saleable siding from day one.
Contact Nicole Today
Phone WhatsApp WeChat: +86 15951187228
Email: ceo@cxsljx.com
