PROCESS OF MANUFACTURING REINFORCED ROD-SHAPED PRODUCTS FROM AMORPHOUS-CRYSTALLINE POLYMERS Russian patent published in 2014 - IPC B29C43/02 

FIELD: chemistry.

SUBSTANCE: method is based on deformation of a blank by simple shift with the preservation of its initial shape and dimensions by pressing during one passage through a system, consisting of 4 or more, preferably paired, number of crossing channels, which have similar transverse sections, corresponding to the blank section, and are in pairs in mutually perpendicular planes, input and output channels are made vertically coaxial, at a temperature of the blank equal to 0.85-0.95 of the polymer melting temperature, a rate of extrusion 0.6-1.0 mm/s, deformation intensity 0.73-0.83. The inclined deforming channels are turned in pairs with a step +90° around a longitudinal axis of an extrudate and are separated with vertical deforming channels.

EFFECT: increased physical-mechanical properties of polymer rod-shaped products with the preservation of a high level of plasticity, low hardness anisotropy and a reduced coefficient of linear thermal expansion through the length and breadth.

3 dwg, 4 tbl