Browse Publications Technical Papers 2003-01-1132

Blow Foaming (Extruded Multi-Layer Structural PP Foam for Automotive Interior Parts) 2003-01-1132

We, at JSP Corporation, have developed a blow foaming method, which is the direct blow molding, suitable for large moldings, such as automotive applications. This method is a combination of multilayer molding based on our original co-extrusion technique, and extrusion expanding. It can produce multilayered expanded parisons and their moldings. Using unique expansion technology and a volatile physical expanding agent, we provided an expanded layer with a lower density, compared with well-known blow foaming methods using decomposable chemical expanding agents. It can be molded through a single process, adding to products values, such as lighter weight and higher thermal insulation and cushioning performance. In addition, the resulting products are highly recyclable because all layers are made from a single material.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.