
Amid the global pursuit of lightweighting and a circular economy, MPP (Microporous Polypropylene) foam core material is becoming a key alternative to traditional materials. With its core advantages of recyclability and lightweighting, it is revolutionizing technologies in truck trailers, RVs, composite panels, and other fields, offering a new solution for the transportation industry to break free from its reliance on plywood.


Specifications
| Total Thickness | 5-150mm |
| Length | ≤12m. |
| Width | ≤2.8m. |
| Core Materials | MPP (Microporous Polypropylene). (Density: 30~120kg/m³) |
| Skin Materials | CFRT sheet. (0.7~2.0mm) |
| Layers of UD Tape | 2~9 layers, the number of layers can be customized. |
| Surface Film | PET film. |
| Surface Color | White/black and other colors can be customized. |
| Performance Treatment | Anti-ultraviolet, flame retardant, antistatic. |
| Process Options | CNC machining services. |
Differentiated Advantages of MPP Foam
- Rigidity and Toughness: Existing foam materials are either hard and brittle, or soft and tough, and it is difficult to have both rigidity and toughness. The microporous polypropylene foam material has both rigidity and toughness, which complements the deficiency of the performance of the existing foam material.
- Environmental Protection: The MPP foaming process is clean and pollution-free, and it can be recycled and reused. It is an environmentally friendly product.
- High Temperature Resistance: The thermal deformation temperature of PP foam material is much higher than that of PS and PU foam materials.
- Thermal Insulation: The micron-sized cells effectively reduce the convection of gas in the foam, thereby effectively reducing the heat transfer caused by air convection.
- Lightweight: The density of MPP foam is generally below 50kg/cm³.
- Waterproof: Micron-sized cells make its extremely low water absorption.
Structural Diagram of CFRT MPP Sandwich Panels

Composite Process of CFRT MPP Sandwich Panels
Compared to composite panels that rely on adhesives, MPP foam is fused to the CFRT (Continuous Fiber Reinforced Thermoplastic Polypropylene) skin through a thermoplastic composite process, avoiding the delamination problem of the foam sandwich panel.
The heated lamination composite process offers high production efficiency, allowing the composited panels to be used immediately. This efficiency far exceeds the high-pressure vacuum forming of traditional FRP-skinned foam-core sandwich panels (which requires several hours of adhesive curing), significantly shortening production cycles.

Innovating the Transportation Market
The transportation industry’s demand for lightweight, durable, and cost-effective materials fully leverages the performance of MPP foam composite panels.
- Weight Reduction: Reduces costs and increases efficiency, improving fuel or electricity efficiency and lowering transportation costs.
- Durability: Effectively withstands the heavy loads, shocks, and vibrations experienced by trucks and trailers.


TOPOLO focuses on the composites industry’s key challenges of “Lightweighting + High strength + Sustainability” providing modular composite board solutions for industries such as transportation and construction.
