摘要:
A shaft assembly for use in a temperature-controlled K-mixer is provided, along with the mixer including the shaft assembly. The shaft assembly includes an inner hollow shaft defining an inner passage, and an outer hollow shaft coaxially surrounding the inner hollow shaft. An outer passage extends between the inner and outer hollow shafts. The shaft also includes a plurality of blades extending from the outer hollow shaft, for mixing the material. Each of the blades is provided with channels. The inner passage, the channels and the outer passage form a continuous flow path allowing a pressurized fluid to circulate within inner and outer hollow shafts and the blades, for controlling temperature of the shafts and the blades. The channels allow a flow of the fluid in the blades in an opposite direction of a rotational direction of the shaft assembly.
摘要:
A feeder unit comprises a storage hopper, a weighing cell, a conveyer, and a discharge end. The storage hopper is to be connected to a refilling system and the discharge end to a receiving container. A working space is defined by the arithmetic product of the dead weight of the feeder unit and the refilling interval, such that the working space is below 0.2 kgh. Furthermore a method for discharging a constant mass flow of one or more powders into a receiving container is defined.
摘要:
It is an object of the present invention to obtain an optically transparent nano-dispersed polymer blend extrudate and a transparent resin having a microscopic dispersion structure in which incompatible polymer blend is melted and kneaded, one of resins is formed into a matrix, a size of dispersed phase of the other resin is controlled to 300 nm or less, more preferably 100 nm or less. Extra additive such as a compatibilizer is not added. When the incompatible polymer blend is melted and kneaded using a high shearing and forming apparatus having an inner feedback type screw under a condition that the screw rotation speed is 600 rpm to 3000 rpm, the rotation speed of the inner feedback type screw is increased, the kneading time is set under constant rotation speed, the high shearing forming condition is adjusted, and a structure in which a size of dispersed phase is controlled to 300 nm or less, more preferably 100 nm or less is formed.
摘要:
It is an object of the present invention to obtain an optically transparent nano-dispersion polymer blend extrudate and a transparent resin having a microscopic dispersion structure in which incompatible polymer blend is melted and kneaded, one of resins is formed into a matrix, a size of dispersed phase of the other resin is controlled to 300 nm or less, more preferably 100 nm or less. Extra additive such as a compatibilizer is not added. When the incompatible polymer blend is melted and kneaded using a high shearing and forming apparatus having an inner feedback type screw under a condition that the screw rotation speed is 600 rpm to 3000 rpm, the rotation speed of the inner feedback type screw is increased, the kneading time is set under constant rotation speed, the high shearing forming condition is adjusted, and a structure in which a size of dispersed phase is controlled to 300 nm or less, more preferably 100 nm or less is formed.
摘要:
With conventional closed kneaders, the temperature of the kneaded material remains high at the end of primary kneading because no sufficient cooling is made in the interior part of the kneaded material, making it necessary to either provide cooling time between the primary and secondary kneading, or the transfer of materials to another kneader after the end of primary kneading for the secondary kneading, and this has constituted an obstruction to productivity. The present invention, realized in view of such problems, provides a closed kneader capable of controlling the kneaded material temperature at the end of primary kneading at a level no higher than the temperature that allows addition of a vulcanizing agent line, and can perform secondary kneading immediately after the end of primary kneading. And, on a closed kneader provided with a chamber for storing kneaded material and a pair of rotors installed in the chamber, the proportion of the radius of the rotor shaft against the radius on the inner face of the chamber is kept at no less than 0.65.
摘要:
A treatment device (1) for flowable material comprises a container body (2) suitable for receiving a predefined quantity of said flowable material and delimited by a wall (3), at least one radiating device (20, 30) which radiates infrared radiation to heat said flowable material in said container body (2), a cleaning device (10, 11, 12) fixed at one end thereof (11a) to a base (110, 6) of said container body (2) and rotatable around an axis (X) of said container body (2), and a cleaning device (10, 11, 12) provided with a scraping device (12) provided at an end portion (1 ib) of said cleaning device (10, 11, 12) opposite said first end (11a) and arranged to run in the rotation of said cleaning device (10, 11, 12) over at least one segment (T) of a free stretch (3′) of the said wall (3) defined between a free surface (S) of said material and a mouth (2′) of said container (2) in order to scrape off any residues of said flowable material from said at least one segment (T) of said free stretch of wall (3′).
摘要:
A device stores and mixes a liquid and a solid component, in particular, the device mixes and stores a monomer liquid and a powder for producing bone cement. The device contains two chambers of which the first chamber contains the solid component and is separated from a second chamber that contains the liquid component by means of a separation that can be opened. A mixing facility that can be driven by means of a pressure difference is arranged in the first chamber. In the present storage and mixing system, a vacuum that is available in the operating theatre is used to mix a monomer liquid and a bone cement powder in a vacuum and to operate a mixing facility simultaneously. Moreover, the vacuum can also be used to open a separation between monomer liquid and mixing space and to transfer the monomer liquid into the mixing space.
摘要:
With conventional closed kneaders, the temperature of the kneaded material remains high at the end of primary kneading because insufficient cooling is made in the interior part of the kneaded material, making it necessary to either provide cooling time between the primary and secondary kneading or to transfer materials to another kneader after the end of primary kneading for the secondary kneading. This has constituted an obstruction to productivity. In view of such problems, a closed kneader is capable of controlling the kneaded material temperature at the end of primary kneading at a level no higher than the temperature that allows addition of a vulcanizing agent line, and can perform secondary kneading immediately after the end of primary kneading. In a closed kneader provided with a chamber for storing kneaded material and a pair of rotors installed in the chamber, the proportion of the radius of the rotor shaft to the radius on the inner face of the chamber is kept at no less than 0.65.
摘要:
A discharge device for discharging solids of a thermoplastic substance and fibers includes a discharge passage extending longitudinally and having an inner wall surface forming a passage opened at its lower end, a solid supply device for supplying the solids of the thermoplastic substances to a first position in the passage and a fiber supply device for supplying the fibers to a second position in the passage. A cross line on which a part of the inner wall surface extending downward from an upper one of the first position and the second position intersects a vertical plane forms an angle of 0 to 30° with respect to a vertical line, or all tangent lines for the cross line form angles from 0 to 30° with respect to a vertical line.