JP2005335240A5 - - Google Patents

Claims (11)

A raw material supply unit;
Consists of a kneading extrusion part in which a single shaft part and a biaxial part communicated,
The raw material supply unit is connected to the vicinity of the end on the biaxial portion side of the kneading extrusion unit,
The biaxial part has a first screw feed part, a first kneading part, and a second screw feed part in this order from the connecting part side of the raw material supply part,
The first kneading section includes a reverse feed rotor and a forward feed rotor, and has two or more configurations combining the reverse feed rotor and the forward feed rotor,
(Total L / D of the reverse feed rotor) / (Total L / D of the forward feed rotor) of the first kneading part is 0.83 to 2.23, and L ₁ / D of the rotor of the first kneading part is 5-15,
Using a biaxial continuous kneading apparatus in which the ratio (σ / D) between the tip clearance σ at the outermost peripheral end of the reverse feed rotor and the outer diameter D of the screw is 0.013 to 0.070 ,
A method for producing a thermoplastic resin composition containing compressed talc, which comprises kneading compressed talc and a thermoplastic resin. The manufacturing method of the thermoplastic resin composition containing the compression talc of Claim 1 in which the said biaxial continuous kneading apparatus has a forced feeder in the connection part of the said raw material supply part and a 1st screw feed part . The thermoplastic resin composition containing compression talc according to claim 1 or 2, wherein the two screws of the biaxial portion are of non-meshing type opposite direction rotation system and rotate in the center side direction of the two screws. Manufacturing method. The biaxial continuous kneading apparatus has a damming structure and / or a throttle adjusting valve at an end of the biaxial part on the second screw feed part side, and the second screw feed part and the damming structure and / or Or the manufacturing method of the thermoplastic resin composition containing the compression talc in any one of Claims 1-3 which has a 2nd kneading | mixing part between an aperture adjustment valve | bulb . The thermoplastic resin containing compression talc according to any one of claims 1 to 4, wherein the kneading and extruding part is a tandem type composed of a biaxial extruder that is the biaxial part and a single screw extruder that is the monoaxial part . A method for producing a resin composition. The screw structure of the said screw feed part or a rotor is a 2 type | mold type, The manufacturing method of the thermoplastic resin composition containing the compression talc in any one of Claims 1-5 . The manufacturing method of the thermoplastic resin composition containing the compression talc in any one of Claims 1-6 which have an open vent in a said 2nd screw feed part . The manufacturing method of the thermoplastic resin composition containing the compression talc in any one of Claims 1-7 from which the rotational speed of the two screws of the said biaxial part each differs . The method for producing a thermoplastic resin composition containing compressed talc according to any one of claims 1 to 8, wherein the rotor has a twist angle of 60 ° . The purge material is pre-filled in the casing of the kneading and extruding part, and then the raw material is supplied from the raw material supply part to the kneading and extruding part, and the raw material is melt-kneaded . A method for producing a thermoplastic resin composition containing compressed talc. The manufacturing method of the thermoplastic resin composition containing the compression talc of Claim 10 which sets the screw rotation speed of the kneading extrusion part at the time of the said melt kneading to 250-800 rpm .