PVC foam board and WPC board can look similar in finished form, but they require different formulations and production strategies. Compare PVC foam board production line and WPC board extrusion line requirements by density, surface, wear and application.
PVC foam board and WPC board are often discussed together because both can replace wood, plywood and solid plastic. They are not the same product.
PVC foam board
PVC foam board is produced from PVC resin, calcium carbonate, stabilizer and a foaming system. Free-foam, semi-crust and co-extruded core-foam structures are common.
WPC board
WPC board combines plastic with wood flour or other natural fibers. It offers a wood-like feel, good stiffness and a lower apparent cost in some formulations.
Production economics
A low-density PVC foam formulation can reduce material cost per cubic meter, but surface quality and screw speed must remain stable. WPC can reduce resin content but may increase wear and moisture-control requirements.
Questions for the line supplier
- What density and thickness range was the line designed for?
- Is the die optimized for free-foam, semi-crust or co-extrusion?
- How is foaming gas or chemical foaming agent controlled?
- What surface finish is achieved without extra sanding?
- What is the wear-part life for a WPC formulation?
Do not compare PVC foam and WPC board by equipment price alone. Compare the saleable board, scrap rate, surface quality and raw-material cost.
Related BENK extrusion lines
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