The shear-head technology developed approx. 20 years ago for continuou
s production of technical rubber profiles shows a number oi advantages
compared with other technologies. Because of the internally generated
heat by shearing of the material and of the uniform temperature distr
ibution over the complete cross-section, shear head produced profiles
show high stability, dimensional accuracy, surface quality and a unifo
rm cure rate. Shear-head extrusion lines proof to be particularly suit
able for production oi thick-wailed 1- or 2-compound profiles with or
without metal reinforcement.