light. However, polycarbonate is an inherently poor weathering polymer. Within one year of outdoor exposure, it will yellow, crack and become hazy. While the use of ultra-violet absorbers with the polycarbonate film can extend its exterior performance, to obtain adequate durability for an outdoor...
polycarbonate or kevlar. The skin materials are typically aluminum, high pressure laminates, fiberglass and many different types of plastics such as polyvinyl chloride or PVC and vinyl. The materials used for the preferred embodiment of this invention are chosen based on their strength to weight rati...