Procedure for the elaboration of extruded items. (Machine-translation by Google Translate, not legally binding)

摘要

Process for the production of extruded articles, of a thermoplastic polymer mixed with a small proportion of solid additive of lower melting point than that of the thermoplastic polymer, characterized in that the thermoplastic polymer is continuously fed granularly to a screw extruder, and the necessary proportion of the additive in the form of granules coated with a thermoplastic polymer of melting point of at least 30ºC above the melting point of the additive is fed continuously into the stream of granulated thermoplastic polymer, the spindle being designed in such a way and functioning so that the melting and mixing of the thermoplastic polymer, or polymers if more than one is present, is effected, and the additive, and the resulting mixture, is extruded to form extruded articles. (Machine-translation by Google Translate, not legally binding)