Welcome to ANDA
Welcome to ANDA
A WPC decking production line turns wood powder, recycled plastic, and additives into hollow or solid outdoor decking profiles. Factories making garden decking, balcony boards, poolside flooring, or landscape planks need a linked system: mixing, feeding, extrusion, shaping, cooling, hauling, cutting, stacking, and surface finishing. When one step is weak, boards may show air holes, warping, rough cuts, or a plastic-looking surface.
A complete line should match the finished decking profile, formula, output target, and surface style. Most factories need material preparation, core extrusion, downstream handling, and finishing machines.
Stage | Machine | Main production role |
Feeding and mixing | Screw feeder, hot and cold mixer | Sends dry, blended material into the extruder |
Extrusion | Main extruder and mold | Melts and shapes the decking profile |
Co-extrusion | Auxiliary extruder | Adds a capped protective layer |
Shaping | Vacuum forming table | Sets board size and cools the profile |
Pulling and cutting | Haul-off unit and automatic cutter | Controls speed and cuts boards to length |
Handling | Stacker | Collects profiles for packing or finishing |
Finishing | Embossing, sanding, brushing, lamination, printing | Builds wood grain, matte touch, or decoration |
Recycling | Crusher and pulverizer | Reuses clean production scrap |
Output is not decided by the extruder alone. The mixer must provide dry material, the mold must match the wall structure, the vacuum table must cool the profile long enough, and the cutter must follow line speed. If these machines run at different capacities, downtime rises.
Anda’s WPC Decking Production Line covers screw feeder, plastic extruder, mold, vacuum forming table, haul-off unit, cutting machine, stacker, and auxiliary machines for a matched production route.
Mixing is the first quality checkpoint. WPC decking uses a high share of wood powder, so moisture control and even additive dispersion must happen before the material reaches the screw.
In many recipes, wood powder accounts for about 50% to 60% of the blend. It is usually mixed with PE, PP, or PVC plastic, plus lubricants, coupling agents, color masterbatch, stabilizers, and other additives. If wood powder carries moisture into the extruder, steam can create pinholes, rough skin, weak corners, or unstable hollow ribs.
A high-speed hot mixer can raise the blend to about 110–120°C to remove small amounts of moisture and spread additives. The material then enters a cold mixer for cooling. This prevents overheated powder from bridging in the feeder or poor flow at the inlet.
Decking factories often use crushers and pulverizers for rejected profiles, edge trimming, or start-up waste. Reground material can cut raw material cost when the ratio is controlled. It should be clean, dry, and close in particle size.
Anda’s WPC Decking Production Line can work with hot and cold mixers, crushers, pulverizers, and feeders for stable high-filling production and lower additive use.
The extrusion section gives WPC decking its final cross-section. Hollow decking, solid planks, grooved edges, clip channels, and capped profiles all depend on screw performance, melt stability, mold accuracy, and vacuum forming.
A conical twin-screw extruder is commonly used for WPC decking because it can process filled composite material and keep plasticizing stable. Motor power can be selected around 37 kW, 55 kW, or higher by formula, board weight, and output demand. Typical capacity may start at about 50–150 kg/h and increase for larger profiles.
The mold is equally important. For hollow decking, flow channels must distribute material evenly across ribs and outer walls. For grooved decking, edges must stay accurate for clip installation. Stable pressure and balanced flow reduce rejection.
Residual vapor can damage the surface. A strong vacuum degassing system, supported by a dedicated vacuum pump, helps remove moisture and volatile gas during extrusion. For higher-value outdoor decking, a co-extrusion unit can wrap the core with a UV-resistant polymer cap, improving stain resistance and color stability.
Anda’s WPC Decking Production Line supports main extrusion and optional co-extrusion, so manufacturers can produce standard WPC decking and higher-margin capped decking on a scalable platform.
After the melt leaves the mold, the profile is still warm and easy to deform. Downstream machines control size, straightness, length accuracy, and safe handling.
A vacuum forming table holds the profile in shape while water removes heat. Stainless steel tables around 4000–6000 mm long are often used for WPC profiles because the material needs enough time to set. If cooling is too short, hollow ribs may sink. If vacuum is uneven, the surface can show waves or size drift.
Two-claw or three-claw caterpillar haul-off units grip the profile and pull it forward. Speed is usually controlled by frequency conversion so pulling follows extrusion output. Too much pull stretches the board. Too little pull causes swelling near the mold.
Automatic cutters may use pneumatic lifting or saw cutting, with length adjusted by limit control. Well-set cutting can reach about ±2 mm accuracy in normal production. Dust collection also matters because WPC cutting creates fine powder. A stacker then receives boards evenly, reducing scratches and bending.
Anda’s WPC Decking Production Line links vacuum forming, haul-off, cutting, and stacking into one continuous process for stable board length, cleaner edges, and smoother packing flow.
Decking buyers often judge a board by touch and appearance before reading technical data. Surface finishing machines turn a basic extruded profile into a market-ready outdoor flooring product.
Online embossing presses 3D wood grain while the board is still warm, so the pattern holds better. Offline embossing can also suit flexible production plans. Deep wood texture is useful for garden decking, resort walkways, balconies, and poolside areas where a natural look supports better pricing.
Fresh WPC surfaces can look slightly glossy. Sanding and brushing break that reflective layer and create a matte, wood-like touch. This process is common for retail channels and project buyers who want a less artificial finish. Lamination, hot stamping, and printing can serve decorative profile work.
Anda’s WPC Decking Production Line can be matched with online or offline embossing, sanding, brushing, lamination, hot stamping, and printing equipment for different local decking markets.
A turnkey WPC decking plant should be planned from the finished board backward. The key question is whether the line can make the required board size, texture, output, and cost per meter.
Factories usually need to confirm:
· Hollow or solid decking profile
· Board width, thickness, wall structure, and clip groove
· PE, PP, or PVC-based formulation
· Target output per hour and daily shift plan
· Standard extrusion or capped co-extrusion
· Surface finish, such as 3D grain or brushed texture
· Scrap recycling ratio and powder preparation method
· Power supply, cooling water, compressed air, and workshop length
A WPC decking extrusion line needs space for the mixer, feeder, extruder, calibration table, haul-off, cutter, stacker, and finishing machines. Operators also need room to change molds, clean vacuum tanks, remove dust, and move finished boards.
Anda’s WPC Decking Production Line supports plant planning from mixing to stacking, with auxiliary equipment for material preparation, recycling, and surface finishing.
Zhangjiagang Anda Machinery Co.,Ltd. focuses on plastic extrusion machinery for WPC, PVC, profile, panel, sheet, and auxiliary production needs. Its WPC Decking Production Line is built around practical factory requirements: stable plasticizing, matched downstream speed, surface finishing options, and auxiliary machines for mixing and recycling.
WPC decking production needs more than a machine list. It needs a proper match between raw material behavior, screw configuration, mold flow, vacuum forming, and surface treatment. Anda provides extrusion equipment for WPC profiles and related building material products, giving buyers a supplier familiar with profile forming, cooling, hauling, cutting, and stacking.
As a WPC Decking Production Line manufacturer, Zhangjiagang Anda Machinery Co.,Ltd. offers a complete route for factories that want to produce outdoor wood plastic composite decking with steady output, controlled surface quality, and scalable handling. Welcome to watch Anda's video on the WPC decking production line to learn more details.
A complete WPC decking production line is a connected manufacturing system, not a single extruder. The mixer dries and blends the recipe. The extruder and mold shape the board. Vacuum calibration fixes size. Haul-off, cutter, and stacker protect length accuracy and handling. Embossing, sanding, brushing, and co-extrusion decide how the final board looks and feels.
For manufacturers planning a WPC decking plant, the best line is the one that matches formula, profile design, output target, workshop layout, and finishing style. Anda’s WPC Decking Production Line covers the needed machines from mixing to stacking and can be expanded with co-extrusion and surface treatment equipment.
A complete line usually includes a mixer, screw feeder, main extruder, mold, vacuum forming table, haul-off unit, cutting machine, stacker, and optional finishing machines such as embossing, sanding, brushing, lamination, hot stamping, or printing equipment.
Hot mixing helps remove moisture from wood powder and spread additives evenly. Cold mixing then lowers material temperature before feeding. This reduces surface holes, poor flow, and unstable extrusion during WPC decking production.
Yes. Different decking sizes and shapes can be produced by changing molds and adjusting line settings, as long as the extruder capacity, vacuum table, haul-off unit, and cutter match the profile requirements.
Co-extrusion adds a protective outer layer over the core material. It is often used for capped WPC decking that needs better resistance to sunlight, stains, moisture, and surface wear in outdoor applications.
