WPC ≠ HPC

WPC (Wood-Plastic Composite) is a general term for composite materials combining wood and plastic. However, material composition and quality standards may vary significantly between manufacturers.

• Different recycled wood sources used: wood furniture, panels, flooring, and door factories
  

• Different recycled plastic sources used: HDPE, LDPE, PVC, and PP
  

• Different compositions: 25-55% plastic with 45-75% wood
  

• Different manufacturing conditions: technologies, machinery & equipment, extrusion tooling, and quality standards
  

RAINBODECK is the industry-leading brand in composite products and the pioneer of High-Performance Composites (HPC).

HPC’S UNIQUE PRODUCTION FLOW

1. Selected-grade HDPE, well-managed wood sources, a unique composition formula, and centralized HPC granule production ensure guaranteed granule stability. 
   

2. Exceptional 2nd-step granule optimization (unique in the industry) further enhances the evenness of the material mixture.
   

3. Twin-screw extrusion (single-screw is used by some brands) ensures all HPC granules are fully compounded and plasticized before shaping, guaranteeing every wood flour particle is perfectly wrapped and protected by HDPE.
   

4. High-pressure molding reduces extrusion speed but delivers superior product density, squareness, straightness, and flatness.
   

5. On-line embossing is a shaping process that occurs immediately after the material exits the tooling chamber while still hot and flexible. The embossed wood grain becomes an integral part of the material, creating a natural, 3D wood-grain effect — unlike conventional WPC methods that use heated rollers to imprint patterns onto cooled surfaces, resulting in artificial textures that fade within weeks.