| abstract |
PROCESS AND APPARATUS FOR EXTRUDING A LOW DENSITY ELASTOMERIC THERMOPLASTIC FOAM ABSTRACT OF THE DISCLOSURE A process and apparatus are described for extruding a soft, low density elastomeric thermoplastic foam. A single screw extruder having a very large screw length to diameter ratio is pro-vided to thoroughly mix the thermoplastic elastomer with a blow-ing agent. A thin, substantially taperless die is also provided to form extruded profiles. By using such a process and apparatus, a variety of complex shaped extruded profiles may be easily produced. |