Closed-cell 4x8 pvc foam board is a light-weight rigid material used primarily in the manufacture of signs and displays. It is considered robust for outdoor use, being immune to rain and resistant to wind and sunlight.PVC foam boards are distinct from the extra-lightweight foam-core board, laminated of foam and card surfaces, used for indoor signage and modeling. Closed-cell PVC foam board's material properties have also made it extremely popular among makers of models and props, and builders of yachts and composite experimental aircraft.

Like PVC, closed-cell PVC foam board is solid and has a very rigid structure. Where it differs is in its closed-cell foam structure, which makes it very light, highly resistant to moisture and some chemicals, and very easy to cut and shape. It also has thermoplastic properties, and begins to soften at around 65 °C (149 °F). Typically, closed-cell PVC foam board can be cut as easily as wood, softened and shaped by immersing in boiling water or with a standard heat gun, and painted with standard automobile paints. One drawback to PVC materials is that hot working them produces noxious fumes containing hydrochloric acid and potentially even dioxins. These are a respiratory hazard in a workshop and the acid fumes are so serious that they may damage equipment. Some heat-based processes, notably laser cutting, are generally considered impossible owing to the equipment risk.[1] Where PVC materials are cut by laser, this is a highly specialist process requiring adapted machines and acid-specific fume extraction and filtering.

PVC foam board is distinct from the extra-lightweight foamcore board, laminated of foam and card surfaces, used for indoor signage and modelling. PVC trim boards have following excellent features: strong and durable; lightweight and easy to install; not easy to scratch; will not rot, warp, delaminate, cup or twist; resistant to weathering, shock and abrasion; salt water corrosion resistant; impervious to salts, insects and many chemicals, including some acids; doesn't mold; can be worked just like wood; non-toxic; 100% recyclable; fire-retardant (self-extinguishing); easy to clean; virtually maintenance free. The extrusion line adopts Celuka foam technology. These processes result in a "skinning" or outer layer of the foam board be harder or more scratch resistant. Compared with PVC free foam board, PVC Celuka foam board not only has much more smooth surface, but also has the more skin hardness, and the mechanical performance of the PVC Celuka foam board is much better than the PVC free foam board. As with the China Plastics Processing Industry Association, Guangdong Plastics Industry Association has a close technical cooperation, and hired well-known professor of the plastics industry, technical experts, the company's expert advisory committee, and therefore the application of engineering plastics research and development has a unique technological advantage, from the material to the modified polymeric composite materials, all show us in this area of the scale of strength and skill level.

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