PROCESS TO RECYCLE EXPANDABLE PLASTIC MATERIALS AND AN EXPANDABLE OR EXPANDED PLASTIC MATERIAL OBTAINABLE THEREBY Russian patent published in 2018 - IPC B29C44/34 B29C44/42 B29C44/50 B29B17/00 B29K105/26 

FIELD: technological processes.

SUBSTANCE: group of inventions relates to a method for recycling and/or formulating expandable plastic materials using system 1, as well as to a granulated expandable plastic material. Process comprises the steps of melting in extruder unit 10, cooling in mixer-heat exchanger unit 20 and controlling the melt pressure by means of melt pump unit 50, followed by granulation, extrusion, or injection molding. First expansion agent 81 is not degassed during a melt processing in system 1, such that it is substantially contained in granulated expandable plastic material 130 or used to form either extruded, formed and expanded plastic material 140 or molded expanded plastic article 150. Granulated expandable plastic material 130 is extruded, formed and expanded plastic material 140 and is configured for molded expanded plastic article 150 obtainable by said process.

EFFECT: technical result is to process an entire feedstock consisting essentially of only recycled expandable plastic material.

13 cl, 1 tbl, 5 dwg