The invention relates to a heatable mixer (1) for composite products based on thermoplastic material(s), having an elongated structure defining a longitudinal processing path between an inlet and an outlet and comprising a heated trough (3) wherein two mutually interpenetrating parallel twin screws (4 and 4) are mounted, forming member(s) for dimensionally reducing, heating and moving the products to be treated which are inserted at the inlet, each screw (4, 4′) comprising a heated and driven support shaft (5) arranged in the travelling direction (DT). Mixer (1) characterised in that the thread (4″) of each screw (4, 4) is an interrupted or discontinuous thread and comprises, over at least a major portion of the length of the relevant screw (4, 4′), a plurality of first blades (6) in the form of flat and smooth plates which are separated from each other axially and radially and all arranged according to a constant.

A method for producing filaments from polyester waste, having the steps of mechanically comminuting the polyester waste, post-condensing the comminuted polyester waste in the solid phase, melting the post-condensed polyester waste and extruding the melt in order to form filaments. Prior to carrying out the melting step for extrusion purposes, the method is completely carried out below the melting temperature of the polyester waste. The solution viscosity of the post-condensed polyester waste equals at least 1.7. Possible applications of the filaments according to the invention are, for example, reinforcement carcasses for vehicle tyres.

An installation (1) and method for treating composite products (2) based on thermoplastic material(s) for recycling purposes, the installation at least comprising means (3, 4, 4′, 5, 6) for heating, for reducing size, for crushing and for separating, said means being arranged to form at least one line (1′) for treating and extracting material(s) to be reused, operating as a continuous or intermittent flow, and regulated if necessary. The installation (1) is characterised in that the means (3) for heating and reducing size comprise at least one heated screw mixer, the crushing means comprise at least one roll crusher (4, 4′) comprising two rolling rollers (7 and 7′) that are heated and set into rotation in opposite directions, the separating means (5, 6) comprise at least one macroscopic separating means (5) in the form of a device for discharging macroscopic polluting particles present in the output (3′), and the separating

Provided are a method and a device for recycling and granulating PP composite medical drip soft bags. The method includes: putting a fragment mixture of a recycled PP composite medical drip soft bag into a hopper; heating the fragment mixture to a predetermined temperature for kneading, filtering the heated fragment mixture, and then extruding the heated fragment mixture after filtering; cooling the fragment mixture; shaping and granulating the fragment mixture to form a plurality of particle materials; cleaning the particle materials; dehydrating the particle materials; vibration screening the particle materials according to different sizes; and outputting the particle materials with respective sizes to different storage barrels. This is used to recycle PP composite medical drip soft bags to achieve the effects of recycling, improving processing efficiency and creating friendly environment.

An installation (1) and method for treating composite products (2) based on thermoplastic material(s) for recycling purposes, the installation at least comprising means (3, 4, 4, 5, 6) for heating, for reducing size, for crushing and for separating, said means being arranged to form at least one line (1) for treating and extracting material(s) to be reused, operating as a continuous or intermittent flow, and regulated if necessary. The installation (1) is characterised in that the means (3) for heating and reducing size comprise at least one heated screw mixer, the crushing means comprise at least one roll crusher (4, 4) comprising two rolling rollers (7 and 7) that are heated and set into rotation in opposite directions, the separating means (5, 6) comprise at least one macroscopic separating means (5) in the form of a device for discharging macroscopic polluting particles present in the output (3), and the separating means (5, 6) also comprise at least one microscopic separating means (6).

A process for collecting and storing quality control data in a mechanical polyolefin recycling process, a process for optimising the performance of the mechanical polyolefin recycling process in response to said quality control data, an adjustment control model and a use of quality control data for optimising the performance of the mechanical polyolefin recycling process.

A waste polymer recycling process may include: (1) obtaining waste polymer (e.g., waste solution dyed carpet yarn); (2) pelletizing the waste polymer; (3) obtaining green and clear polymer; (4) providing an extrusion line that includes a dosing system, an extruder, a spinning machine, and a color sensor; (5) using the dosing system to dose a first amount of the pelletized waste polymer, a second amount of the green polymer (e.g., a second amount to offset a color of the first amount of the pelletized waste polymer), and a third amount of the clear polymer into the extruder; (6) forming the extruded polymer combination into carpet yarn using the spinning machine; (7) using the color sensor to determine a color of the carpet yarn and (8) using the dosing system to adjust at least one of the amount of pelletized waste polymer, green polymer, and/or clear polymer introduced into the extruder.