摘要:
A gel reduction device 1 of the present invention includes a gel reduction mechanism 8 provided in a polymer flow duct 5 in which a polymer kneaded compound flows and adapted to reduce gel present in the polymer kneaded compound. The gel reduction mechanism 8 includes at least one or more squeezing flow paths 10 having a flow path cross-sectional area smaller than the polymer flow duct 5, and a squeeze ratio S1/S2 of the squeezing flow paths 10 is set to be 25 to 180 so as to be able to generate an extensional flow in the kneaded compound flowing in the squeezing flow paths 10.
摘要:
The degree of kneading of a material to be kneaded is to be capable of being adjusted with a high accuracy.A kneading degree adjusting mechanism is installed in a processing apparatus having a barrel and a kneading screw inserted into the barrel rotatably, the kneading screw having a kneading section and being adapted to rotate within the barrel to knead a material continuously while feeding the material from an upstream side toward a downstream side, the kneading degree adjusting mechanism including a push-back section for pushing back the material to the upstream side and thereby making the material stay around the kneading section, the push-back section being disposed downstream of the kneading section in the kneading screw, a kneading degree adjusting member having an opposed surface opposed to an outer periphery surface of the push-back section, and a drive section for actuating the kneading degree adjusting member so that the opposed surface moves toward and away from the push-back section.
摘要:
The degree of kneading of a material to be kneaded is to be capable of being adjusted with a high accuracy.A kneading degree adjusting mechanism is installed in a processing apparatus having a barrel and a kneading screw inserted into the barrel rotatably, the kneading screw having a kneading section and rotating within the barrel to knead a material continuously while feeding the material from an upstream side toward a downstream side. The kneading degree adjusting mechanism includes a push-back section for pushing back the material to the upstream side and thereby making the material stay around the kneading section, the push-back section being disposed downstream of the kneading section in the kneading screw; a kneading degree adjusting member having an opposed surface opposed to an outer periphery surface of the push-back section; and a drive section for actuating the kneading degree adjusting member so that the opposed surface moves toward and away from the push-back section.
摘要:
A continuous mixer in which the rotors used to mix the material are composed of a rotor shaft, and a plurality of rotor segments fitted onto said rotor shaft. The plurality of rotor segments can be removed from the shaft and replaced by rotor segments of differing specifications to produce a rotor of a different shape and specifications in accordance with any change in the kind of mixing conditions required.
摘要:
In a knife used in an underwater cutting granulating device for cutting and granulating a fused resin extruded from a die to a water chamber by a cutter rotated in the state where the knife is opposed to the die, the knife of the cutter has a mountain-shaped guide surface for guiding a water flow in the direction of drawing it toward the die, which is formed on the surface opposite to the surface facing the die. In this knife, more specifically, the transition angle B° from the front surface to the back surface and the transition angle D° from the back surface to the rear surface are set so as to be 150°≦(B+D)/2≦180°. The maximum distance A from the cutter surface to the inner surface and the maximum thickness C of the knife are set so as to be C≦1.2A.
摘要:
In a knife used in an underwater cutting granulating device for cutting and granulating a fused resin extruded from a die to a water chamber by a cutter rotated in the state where the knife is opposed to the die, the knife of the cutter has a convex guide surface for guiding a water flow in the direction of drawing it toward the die, which is formed on the surface opposite to the surface facing the die and a curved concave guide surface on the side facing the die.
摘要:
A mixing degree adjusting device comprises a pair of spacer members arranged at a position sandwiching both round sectional portions of a pair of screws from both sides in the aligning direction of the pair of screws, and a pair of drawing members arranged as a position sandwiching both the round sectional portions from both sides in the orthogonal direction that is orthogonal to the aligning direction. The spacer members are movable between an adjusting position opposing to the round sectional portions, and a retracting position, when the screws are extracted from the barrel, for retracting to the outside until the passage of the screws is accepted. Opposing portions opposing to the round sectional portions at the time of moving to the adjusting position are formed in a substantially linear shape extending in parallel with the orthogonal direction seen from the axial direction of the screws. The drawing members are movable in the direction approaching to and retracting from the round sectional portions along the opposing portions in an area intervening between the opposing portions of both the spacer members at the time of moving to the adjusting position, and when the screws are extracted from the barrel, retractable to the outside until the passage of the screws is accepted.
摘要:
A mixing degree adjusting device comprises a pair of spacer members arranged at a position sandwiching both round sectional portions of a pair of screws from both sides in the aligning direction of the pair of screws, and a pair of drawing members arranged as a position sandwiching both the round sectional portions from both sides in the orthogonal direction that is orthogonal to the aligning direction. The spacer members are movable between an adjusting position opposing to the round sectional portions, and a retracting position, when the screws are extracted from the barrel, for retracting to the outside until the passage of the screws is accepted. Opposing portions opposing to the round sectional portions at the time of moving to the adjusting position are formed in a substantially linear shape extending in parallel with the orthogonal direction seen from the axial direction of the screws. The drawing members are movable in the direction approaching to and retracting from the round sectional portions along the opposing portions in an area intervening between the opposing portions of both the spacer members at the time of moving to the adjusting position, and when the screws are extracted from the barrel, retractable to the outside until the passage of the screws is accepted.
摘要:
A continuous kneader is disclosed wherein rotors each having a material feed section and a kneading section on the outer peripheral surface thereof are inserted rotatably into a chamber while being supported at both axial ends thereof, the said chamber having a material supply port at one end portion thereof, a discharge section is formed at an end portion of each rotor opposite to the material supply side for scraping out the material after kneaded by the rotor radially outwards of the rotor, and a discharge port for discharging the kneaded material thus scraped out in the discharge section of each rotor to the exterior of the chamber is formed in the opposite end portion of the chamber so as to be open radially outwards of the rotor, the discharge section of each rotor having on its outer peripheral surface a twist flight which is inclined in a direction of extruding the kneaded material to the opposite end side of the chamber with rotation of the rotor.
摘要:
A kneaded product of a desired state of kneading is available by causing a material to be kneaded to flow in tip clearances between rotor segments 1b and 1b of screw sets 1 and 1 and an inner wall surface of a chamber 4 while rotating the screw sets 1 and 1 provided to the right and the left of the chamber 4, and imparting a shearing force for dispersion. Each rotor segment 1b has a plurality of kneading blade 7 having different distances between the segment center and the top, so as to achieve a plurality of tip clearances different at least in the circumferential direction when the segment center is aligned with the chamber center.