XPS (extruded polystyrene), it is made of polystyrene resin as raw material plus other auxiliary materials and polymers, while heating and injecting a catalyst, and then extruded to form a rigid foam plastic board. It has a very low Hygroscopicity (almost no water absorption), low thermal conductivity, high compression resistance. It is combined with various reinforcing materials to form XPS Sandwich Panels with superior performance. Now, XPS composite panels are more and more widely used in RVs. These composite panels are used in RV siding, floors, roofs and even interior furniture.
XPS Foam Panels for RVs in TOPOLO-RV
Why Choose XPS Sandwich Panels for RV?
- Excellent thermal insulation
The closed cell rate of XPS foam board is over 99%. It forms a vacuum layer between the indoor and outdoor spaces of the caravan, reducing air flow and heat dissipation, and ensuring the long-lasting and stable thermal insulation performance of the indoor space.
- Excellent high strength compression resistance
The reinforced material (GRP/Aluminum/Wood/Plastic) on the surface of the XPS sandwich panel greatly improves its impact resistance. The composite panel has a certain toughness. When it is hit by a heavy object, the hard outer skin material can protect the inner foam material, and the inner foam material absorbs most of the impact, thus greatly improving the safety of the RV.
- Waterproof & Moistureproof
Since there is no gap between the molecules of polystyrene foam, this structure makes the water absorption rate extremely low, which can basically be ignored, which effectively solves the problems of water leakage and moisture in the RV. Water absorption is an important parameter to measure insulation materials. After the thermal insulation material absorbs water, its thermal insulation performance decreases. Under low temperature conditions, the sucked water is easy to freeze, which destroys the structure of the thermal insulation material, thereby reducing the compression resistance and thermal insulation performance of the board.
- Lightweight
The structure of the XPS foam board is similar to the honeycomb physical structure, so its density is very low (mostly 35~45kg/m3), and the reinforced skin material is limited in thickness, so the weight of the XPS sandwich panel will not be very heavy. This is very convenient for the cutting, transportation and installation of RV panels.
- Good corrosion resistance
The chemical performance of XPS foam is extremely stable, it will not degrade and produce harmful substances in long-term use, and it can still maintain its superior performance in ordinary high-temperature environments. This undoubtedly prolongs the service life of RVs with kitchen and bathing equipment.
Physical Properties of XPS Foam Board
| Items | Unit | Value |
| Density | Kg/m3 | 35~45 |
| Compression Strength | Mpa | 0.1~1 |
| Closed Cell Rate | % | ≥99 |
| Thermal Conductivity | W/m·K | 0.024~0.034 |
| Water Absorption | % | ≤1 |
| Operating Temperature | ℃ | -50~+80 |
Basic Specifications of XPS Sandwich Panels for RV
| Width | Max 3.2m |
| Skin Thickness | 0.7~3mm |
| Core Thickness | 25~120mm |
| Skin Materials | FRP Sheets, Aluminum Sheets, Plywoods, Vinyl, etc. |
Fiberglass Skin XPS Sandwich Panels
Fiberglass skin XPS sandwich panel is undoubtedly one of the most ideal RV building materials. All properties are far superior to metal composite panels. It is lighter, stronger, more beautiful, easier to process and install. Flat FRP sheets are made of thermosetting plastics and reinforced glass fibers, which are stronger than steel and aluminum. It will not deform and crack at high and low temperatures, and its thermal conductivity is very low. It has the characteristics of corrosion resistance, friction resistance and easy cleaning. The surface of flat FRP sheet for RV is usually covered with a layer of gel coat, which will make the surface smoother and waterproof.
Aluminum Skin XPS Sandwich Panels
The aluminum sheet coating we supply is a high-performance fluorocarbon coating (PTFE, PVDF, FEVE)), which can keep the sheet from being corroded in harsh weather conditions. The advantage of aluminum sheet is that it is the lightest metal and will not rust, it can be completely recycled, and the use of aluminum foam composite panels is also a good choice. However, the thinner aluminum sheet will be deformed or even cracked after being subjected to a large impact force. If this material is used on the surface of the RV, it is undoubtedly difficult to repair, which greatly affects the aesthetics, so the side with the aluminum sheet is usually used inside. Therefore, one side of the aluminum sheet is generally used inside, and the other side is made of FRP. Usually aluminum sheets are also laminated with FRP or plywood as reinforcement on one side.
Plywood Skin XPS Sandwich Panels
Because plywood is easy to absorb water and moisture, but it is particularly strong and easy to cut and process, so plywood foam core sandwich panelds are mostly used for interior furniture of RVs such as floors, beds, tables, cabinets, etc. Usually plywood is not applied to both sides of xps sandwich panels, it is usually used as one side of the sandwich panel or laminated with fiberglass or aluminum as one side.
Vinyl Leather XPS Sandwich Panels
Vinyl leather is usually treated to imitate wood grain. It is combined with XPS foam board and used as flooring. Its price is much lower than solid wood flooring, which avoids many shortcomings of solid wood flooring. Using it as a caravan floor is not only aesthetics but also strong and durable, waterproof and moisture-proof, and thermal insulation. Like plywood, it is usually only sandwiched on one side and is often laminated with fiberglass or aluminum. Learn More
What Are The Features of The TOPOLO-RV XPS Sandwich Panels?
- One-Piece Molding Processing
Our foam core caravan composite panels are processed in one piece. First, the frame structure (aluminum or steel pipe) of the caravan will be built. After the frame is formed, the foam core is placed and finally, the core with the frame is pressed together with the skin material. Sometimes a layer of GMT (glass mat reinforced thermoplastics) material is added between the skin and the core to increase the strength and surface smoothness of the panel.
- CNC Machining
The 5-axis synchronous CNC machine cuts and drills the panel to complete complex processing. It not only has high processing precision but also high efficiency, which meets the needs of mass production.
