Foam Extrusion of Thermoplastic Elastomeric Alloys

The new elastomeric alloys such as Monsanto's Santoprene thermoplastic rubber (A class of TPE) can be formed during extrusion by the use of a chemical blowing agent or by the use of a fluorocarbon blowing agent to provide products with characteristics superior to foamed vulcanised rubber. These materials offer more precise dimensional design tolerances, better process control and reprocessing of scrap. Other advantages are in heat weldabiliry, better compression set and compressive load.