I,First-generation non-co-extruded and second-generation co-extruded PE WPC products
Core Difference: From "Single-Layer" to "Core-Shell" Structure
| Aspect | First-Generation: Non-Co-Extruded WPC | Second-Generation: Co-Extruded WPC |
|---|---|---|
| Structural Definition | Single-layer extrusion with uniform composition throughout the entire profile. | "Core-shell" multi-layer structure: An inner core (substrate) is completely encapsulated by a functional outer protective shell (capstock). |
| Core Technology | Conventional single-extrusion process. |
Co-extrusion technology: Two or more extruders feed into a single die, simultaneously extruding the core and cap layers to form a composite profile in one pass. |
| Surface Texturing | Wood grain patterns are applied primarily through post-processing methods such as sanding, brushing, or embossing after extrusion. | The cap layer can be pre-compounded with color pigments, and patterns can be formed during extrusion. Combined with post-processing, this enables more realistic, three-dimensional wood grain finishes with consistent color throughout the surface layer. |
| Key Advantages | Lower production cost; mature and well-established manufacturing process. | Significantly enhanced performance: Superior weatherability, UV resistance, moisture resistance, dimensional stability, and extended service life. |
| Main Limitations | Poor weathering resistance: Prone to fading, warping, and surface cracking under prolonged outdoor UV exposure and moisture absorption. | More complex production process; higher equipment investment and material costs. |
II,Standard PE WPC Profile Extrusion Line (products service life 5-10years)
This extrusion line is specifically designed for producing both hollow and solid PE WPC profiles.
The resulting profiles offer a range of performance benefits, including:
1,Fire resistance
2,Waterproof and moisture-proof
3,Moth-proof and mildew-proof
4,Environmentally friendly (recyclable materials)
Main application areas:
Outdoor decorative profiles
Gardening and landscaping structures
Outdoor landscape projects
Industrial pallets and logistics components
This line serves as a versatile solution for general WPC profile production, with the flexibility to accommodate different cross-section designs and application requirements.
III,Co-Extrusion PE WPC Decking Line (Products service life 15-25 years)
This extrusion line is specifically configured for producing co-extruded PP/PE WPC decking boards, featuring a premium surface layer for enhanced aesthetics and durability.
Surface finishing options:
Co-extruded wood grain layer: The decking surface can be directly formed with a realistic wood grain pattern via a co-extrusion process, which integrates a decorative cap layer during extrusion.
Optional 3D embossing: The line can be equipped with an online embossing device to press three-dimensional wood grain textures onto the surface, offering a more tactile and natural appearance.
Key advantages of the co-extruded WPC decking:
Core: Typically made from recycled plastics (such as PE), wood flour/rice husk powder, and additives, it can be heavily filled with wood flour (up to 60%-70%), reducing costs and providing mechanical strength.
Capstock/Shell: This is a high-performance engineering plastic layer, generally made from virgin materials (such as HDPE) with added light stabilizers, antioxidants, and UV protectants. It acts like armor, completely encasing the core, effectively blocking UV rays and moisture, extending product lifespan from the traditional 5-10 years to 15-25 years.
VI, Comparison of Standerd WPC Profiles Line and Co-extrusion WPC Decking Line
| Feature | Standard WPC Profile Line | Co-Extrusion WPC Decking Line |
|---|---|---|
| Profile types | Hollow/solid profiles (various shapes) | Decking boards with cap layer |
| Surface finish | Embossing/sanding/brushing (post-processing) | Co-extruded grain + optional 3D embossing |
| Typical products | Landscaping, pallets, posts, cladding | Outdoor flooring, garden decking, pool surrounds |
| Added durability | Standard | Enhanced via co-extruded protective cap |
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