The present disclosure discloses a meshing-type rubber internal mixer and a working method thereof. The meshing rubber internal mixer includes a frame mechanism, a mixing mechanism, and an unloading mechanism. The mixing mechanism is on the upper side of the unloading mechanism. The mixing mechanism and the unloading mechanism are in the frame mechanism. An internal mixing chamber is of a closed structure through first automatic telescopic plates and second automatic telescopic plates. The gap between a first meshing-type rotor and a second meshing-type rotor is small, a material is compressed to enter the space between the first meshing-type rotor and the second meshing-type rotor to be extruded with an internal mixing chamber wall. The material is flaky in the internal mixing chamber, so that the material produces great strain deformation, thereby achieving excellent dispersing and mixing effects.

The present disclosure discloses a meshing-type rubber internal mixer and a working method thereof. The meshing rubber internal mixer includes a frame mechanism, a mixing mechanism, and an unloading mechanism. The mixing mechanism is on the upper side of the unloading mechanism. The mixing mechanism and the unloading mechanism are in the frame mechanism. An internal mixing chamber is of a closed structure through first automatic telescopic plates and second automatic telescopic plates. The gap between a first meshing-type rotor and a second meshing-type rotor is small, a material is compressed to enter the space between the first meshing-type rotor and the second meshing-type rotor to be extruded with an internal mixing chamber wall. The material is flaky in the internal mixing chamber, so that the material produces great strain deformation, thereby achieving excellent dispersing and mixing effects.

A mixing and extrusion machine (10) for the manufacture of rubber mixtures includes a mixer with a converging conical twin-screw (12) with a fixed frame (14) that supports sleeves (16). Two screws (18), being mounted at an angle, are mounted in the mixer (12) in such a way as to move in translational movement between an opening (22) arranged upstream and an outlet (25) arranged downstream of the sleeves. The screws are mounted in the sleeves with removable doors including sliding shutters (40) installed relative to the outlet (25). The sliding shutters move linearly between a closed position, in which the sliding shutters prevent the mixer from discharging the mixture, and an open position, in which the sliding shutters prevent discharge of the mixture through the sides of two counter-rotating rollers (32) of a roller nose type system located just downstream of the outlet.

A mixing and extrusion machine (10) for the manufacture of rubber mixtures includes a mixer with a converging conical twin-screw (12) with a fixed frame (14) that supports sleeves (16). Two screws (18), being mounted at an angle, are mounted in the mixer (12) in such a way as to move in translational movement between an opening (22) arranged upstream and an outlet (25) arranged downstream of the sleeves. The screws are mounted in the sleeves with removable doors including sliding shutters (40) installed relative to the outlet (25). The sliding shutters move linearly between a closed position, in which the sliding shutters prevent the mixer from discharging the mixture, and an open position, in which the sliding shutters prevent discharge of the mixture through the sides of two counter-rotating rollers (32) of a roller nose type system located just downstream of the outlet.

A mixing and extrusion machine (10) has a converging conical twin-screw mixer (12) with a fixed frame (14) that supports sleeves (16) in which two screws (18) are mounted at an angle between an opening (22) arranged upstream of the sleeves, where an introduction hopper (24) of the machine (10) feeds the screws, and an outlet (25) arranged downstream of the sleeves, where the mixer discharges the mixture at the end of a mixing cycle. At least one mobile sleeve (34) is disposed towards the outlet, each mobile sleeve with a support surface (34a) of a predetermined surface area (34a) according to an elasticity of the mixture, and each mobile sleeve having one or more mobile elements that move by a linear movement with respect to the outlet in order to adjust a predetermined space between the sleeves and the screws.

A mixing and extrusion machine (10) has a converging conical twin-screw mixer (12) with a fixed frame (14) that supports sleeves (16) in which two screws (18) are mounted at an angle between an opening (22) arranged upstream of the sleeves, where an introduction hopper (24) of the machine (10) feeds the screws, and an outlet (25) arranged downstream of the sleeves, where the mixer discharges the mixture at the end of a mixing cycle. At least one mobile sleeve (34) is disposed towards the outlet, each mobile sleeve with a support surface (34a) of a predetermined surface area (34a) according to an elasticity of the mixture, and each mobile sleeve having one or more mobile elements that move by a linear movement with respect to the outlet in order to adjust a predetermined space between the sleeves and the screws.

A multi-stage modified thermoplastic starch (TPS) masterbatch is obtained by four-stage modification treatment as follows: (i) 100 parts of starch with a moisture content of 15% to 30% are added to a high-speed mixer and stirred under room temperature; (ii) Heated to 50° C. to 70° C., polybutadiene (PB), plasticizer and a chemical modifier are added. The mixture is then stirred a second time; (iii) Heated to 75° C. to 95° C., tackifier, lubricant, filler and chain extender are added. The mixture is again stirred a third time. (iv) A biodegradable resin is added at this temperature, and the resulting mixture is stirred a fourth time. After the stirring is completed, the resulting mixture is incubated at this temperature for a predetermined time, and then added to a twin-screw extruder for melt extrusion. The present invention also discloses a preparation method and use.

A multi-stage modified thermoplastic starch (TPS) masterbatch is obtained by four-stage modification treatment as follows: (i) 100 parts of starch with a moisture content of 15% to 30% are added to a high-speed mixer and stirred under room temperature; (ii) Heated to 50° C. to 70° C., polybutadiene (PB), plasticizer and a chemical modifier are added. The mixture is then stirred a second time; (iii) Heated to 75° C. to 95° C., tackifier, lubricant, filler and chain extender are added. The mixture is again stirred a third time. (iv) A biodegradable resin is added at this temperature, and the resulting mixture is stirred a fourth time. After the stirring is completed, the resulting mixture is incubated at this temperature for a predetermined time, and then added to a twin-screw extruder for melt extrusion. The present invention also discloses a preparation method and use.

A multi-stage modified thermoplastic starch (TPS) masterbatch is obtained by four-stage modification treatment as follows: (i) 100 parts of starch with a moisture content of 15% to 30% are added to a high-speed mixer and stirred under room temperature; (ii) Heated to 50° C. to 70° C., polybutadiene (PB), plasticizer and a chemical modifier are added. The mixture is then stirred a second time; (iii) Heated to 75° C. to 95° C., tackifier, lubricant, filler and chain extender are added. The mixture is again stirred a third time. (iv) A biodegradable resin is added at this temperature, and the resulting mixture is stirred a fourth time. After the stirring is completed, the resulting mixture is incubated at this temperature for a predetermined time, and then added to a twin-screw extruder for melt extrusion. The present invention also discloses a preparation method and use.

A multi-stage modified thermoplastic starch (TPS) masterbatch is obtained by four-stage modification treatment as follows: (i) 100 parts of starch with a moisture content of 15% to 30% are added to a high-speed mixer and stirred under room temperature; (ii) Heated to 50° C. to 70° C., polybutadiene (PB), plasticizer and a chemical modifier are added. The mixture is then stirred a second time; (iii) Heated to 75° C. to 95° C., tackifier, lubricant, filler and chain extender are added. The mixture is again stirred a third time. (iv) A biodegradable resin is added at this temperature, and the resulting mixture is stirred a fourth time. After the stirring is completed, the resulting mixture is incubated at this temperature for a predetermined time, and then added to a twin-screw extruder for melt extrusion. The present invention also discloses a preparation method and use.