The process of manufacturing structural foam involves the combination of thermoplastic resins with other materials, which are injected into a mold at low pressure. The polymer cells form a lattice structure, exhibiting impressive dimensional stability, and then the foam is allowed to cool and form the interior features of the mold. Then, the foam is removed from the mold.
The process is further facilitated by the use of tooling processes, which can be used to customize the shape of the part. The finished product is usually painted using a multistep process involving primer, finishing,China Cascell ® Foam manufacturers and spatter coating. Structural foam is a highly flexible and durable material, which enables it to withstand extreme conditions. Injection molding and structural foam molding are similar processes that use the same technology and terminology.
Both techniques produce large structural parts. These parts can be as large as six feet by three feet or as small as thirteen inches by six feet. They are also impact-resistant and resistant to extreme weather conditions. During the mold process, the resin expands, pushing the foam to the extremities of the cavity.
Lighter parts may require some light sanding to smooth out heavily foamed areas. During the early 1990s, the structural foam industry is booming, and many of the containers are destined for the automotive industry, where the foam is used for transportation of components through assembly lines.