Line manufacturing extruded plastic has horizontal extrusion head with pipe supplying material directly to calender with two rollers having vertical axes

摘要

An extrusion line has a horizontal extrusion head (3) with a pipe (12) supplying material directly to a calender (4) with two rollers (21) having vertical axes. The pipe has upstream and downstream parts of different length connected by a bend = 180 deg . The upstream part forms at least half the length of the pipe and its axis is perpendicular to the axes of the rollers. The upstream part may be two thirds of pipe length and the bend is curved. The head has a blade near the pipe outlet to control the thickness of the extruded material