子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 261 | Centrifugally powered pelletizing machine and method | US448976 | 1982-12-13 | US4457882A | 1984-07-03 | David B. Todd; James D. Layfield |
| A centrifugal pelletizer has a hollow electrically and thermally conductive rotor with a series of orifices along its outer rim portion for centrifugally powering strands of heated thermoplastic material from a body of said material in a flowable state within the interior of the rotor. A knife mounted on the frame adjacent the rotor orifices severs the strands into pellets of a predetermined length. A molten material feed tube with fins therein at the exit end to divide the flow extends into a rotor housing to direct flow in a uniform manner to an axially opposite impeller on the rotor and control mechanism, sensitive to the temperature of the rotor adjacent the orifices, controls the supply of current to electromagnets, which have a peripheral magnetic flux conducting plate system extending to and forming a part of the housing creating a flux field which is interrupted by the spinning rotor to induce currents in the rotor which heat it according to the temperature sensed. | ||||||
| 262 | Centrifugal pelletizing systems and process | US348734 | 1982-02-16 | US4412964A | 1983-11-01 | David B. Todd; James D. Layfield |
| Uniform pellets of thermoplastic material are formed by centrifugally expressing strands of heated material from orifices on the rim of a hollow rotor and severing the strands with a linearly moving endless blade at a selected radial distance from the rim. The severed pellets pass in a tangential path through a cooling spray at the entrance to a pellet outlet duct. The severing blade is mounted on a bracket for movement to and from the severing position and for adjustment radially and circumferentially of the rotor axis. Two blade assemblies are employed alternately so that blade replacement may be accomplished without interrupting operation. Downstream from the outlet duct an auxiliary knife-gate is employed adjacent a scrap duct and is movable from a severing position to a scrap duct closing position. | ||||||
| 263 | Liquid filtration method | US130413 | 1980-03-14 | US4369116A | 1983-01-18 | Max Klein |
| A method is provided which comprises, adding to the liquid a filtering aid effective amount of a filter aid material consisting essentially of particulate expanded polymer formed by comminuting polymeric foam to eliminate substantially all closed cells of said foam and grading to a desired average particle size range smaller than 100 mesh and larger than about 700 mesh, and filtering the resulting liquid mixture through a filter medium. | ||||||
| 264 | Apparatus for processing elastomeric materials | US225498 | 1981-01-16 | US4340342A | 1982-07-20 | Heung T. Kim |
| The processing of thermoplastic materials by working the thermoplastic materials into a hot flat sheet. The sheet material is first deformed or scored into a series of parallel strands that are interconnected by thin ribbons of the thermoplastic material thereby retaining integrity of the sheet material. The sheet material is then severed along the score line of the thin ribbons to form parallel strands which are cooled and guided to a fly cutter which cubes the strand material. | ||||||
| 265 | Method and apparatus for forming spherical particles of thermoplastic material | US902859 | 1978-05-04 | US4212837A | 1980-07-15 | Toshihiko Oguchi; Ichiyoshi Saito; Tsuyoshi Ueno; Tsutomu Kubo |
| This invention is concerned with a method for forming spherical particles of thermoplastic material, characterized by the step of blowing a stream of gas having thermoplastic particles dispersed therein from a peripheral region into a jet of pressurized hot gas to form the thermoplastic particles into uniform spherical particles. It also provides apparatus for carrying out the foregoing method which includes means for discharging a jet of pressurized hot gas from an outlet port and means for ejecting a stream of gas having thermoplastic particles dispersed therein from the periphery of the outlet port toward the jet of pressurized hot gas. | ||||||
| 266 | Method for preparing synthetic powders based on polyvinyl chloride or vinyl chloride copolymers | US505069 | 1974-09-11 | US3993857A | 1976-11-23 | Manfred Smolinski; Josef Kalka |
| The method for preparing synthetic powders based upon polyvinyl chloride or vinyl chloride copolymers by spray drying the polymer dispersions is improved by using single material nozzles with atomizing pressures of about 550 to 1000 bars where a bar is a C.G.S. unit of pressure equal to 750 mm of Hg. | ||||||
| 267 | Method of preparing moldable plastic and additive agents | US534441 | 1974-12-19 | US3930640A | 1976-01-06 | Jack W. Kuehn |
| A method is disclosed for preparing mixtures of moldable plastic and a suitable amount (generally a minor amount) of additive material to be dispersed throughout the moldable plastic, which mixtures are intended for subsequent use in a plastic molding process, by a method which permits separation or re-classification of the mixture into its moldable plastic and additive material components in the event that the mixture turns out to be incorrect or obsolete. The method includes the steps of obtaining small pellets of a moldable plastic having a first shape, these pellets being substantially free of the additive material. These small pellets of moldable plastic are then mixed with small pellets of moldable plastic into which has been incorporated one or more additives, these pellets having a second shape which is classifiably different from the shape of the other plastic pellets. | ||||||
| 268 | Apparatus for producing glass spheres | US41115973 | 1973-10-30 | US3907537A | 1975-09-23 | IRGENS-BERGH IB VON |
| An apparatus for producing glass beads or other spherical particles which includes an open-top rotary receptacle for receiving a free falling molten stream. The receptacle is rotated at a carefully controlled speed to maintain the molten material in continuous contact with the upstanding side wall of the receptacle. A series of capillary orifices extend radially from the side wall in a single plane, and each of these orifices has a cross-sectional area which is substantially equal to that of the spheres to be produced. As the receptacle rotates, the molten material completely covers the entrance openings of the orifices and is discharged therefrom into the atmosphere under ambient temperature conditions to form a multiplicity of dispersed particles. The dispersed particles pass through a space for a period of time sufficient to enable surface tension to shape the particles into spherical form. The particles drop into a series of rotatable concentric bins where they are collected for packaging and shipping.
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| 269 | Method of producing powder composed of precisely spherical particles | US35695173 | 1973-05-03 | US3887668A | 1975-06-03 | HONJO KAZUO |
| Method for producing a synthetic resin powder composed of precisely spherical particles wherein a solution material is prepared by dissolving a synthetic resin in a solvent, spraying the solution in the presence of a separation agent, removing the separation agent from the sprayed material after recovery, and drying the resultant product.
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| 270 | Apparatus for the preparation of emulsifier-containing polyvinyl chloride or vinyl chloride copolymer powders | US30794672 | 1972-11-20 | US3805869A | 1974-04-23 | WOLF H; ROLL H; WINTER H; SMOLINSKI M; HOFFMANN K; JACOB H |
| Uniform, finely divided powdery vinyl chloride polymer particles containing less than 2 wt. percent particles having a diameter greater than 40 Mu are obtained by spray-drying an aqueous dispersion of the polymer and a carrier gas through a two-fluid atomizer into a water-evaporating atmosphere at specified rates. The resultant polymer particles exhibit inproved handling properties and can be used to form improved plastisols without air separation of the particles.
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| 271 | Carbon black pelletizer | US3787161D | 1972-05-25 | US3787161A | 1974-01-22 | FRYE J; MORTON R |
| A carbon black, and the like, pelletizer having a rotor with a multiplicity of flat, bladelike toolholders attached to a rotatable shaft and each mounting at the end thereof a pelletizing tool in the nature of a pin. The toolholders are so designed and arranged as to effectively form a helix, in conjunction with the pins, for advancing the material during pelletizing to an outlet, and one embodiment provides a double helix for substantially working all of a product at all times.
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| 272 | An apparatus for making spherical granules | US3741703D | 1971-04-26 | US3741703A | 1973-06-26 | REYNOLDS A |
| An improvement to an apparatus for making spherical granules from extrusions of wet plastic solid material comprising incorporating into said apparatus a rotatable frictional plate having the peripheral portion turned upwardly as it extends radially outwardly toward the encircling container wall.
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| 273 | Method for producing powder composed of precisely spherical particles | US3739049D | 1970-12-04 | US3739049A | 1973-06-12 | HONJO K |
| METHOD FOR PRODUCING A SYNTHETIC RESIN POWDER COMPOSED OF PRECISELY SPHERICAL PARTICLES WHEREIN A SOLUTION IS PREPARED BY DISSOLBING A SYNTHETIC RESIN IN A SOLVENT, SPRAYING THE SOLUTION IN THE PRESENCE OF A SEPARATION AGENT, REMOVING THE SEPARATION AGENT FROM THE SPRAYED MATERIAL AFTER RECOVERY, AND DRYING THE RESULTANT PRODUCT.
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| 274 | Granulating tacky elastomeric materials | US3687699D | 1968-11-29 | US3687699A | 1972-08-29 | PROSSER ROBERT M; THOMAS NELSON A |
| TACKY, ELASTIC, AGGLOMERATIVE SOLID MATERIALS SUCH AS CHLOROPRENE POLYMERS ARE GRANULATED BY MECHANICAL CUTTING IN PROCESSES IN WHICH (1) WATER IS SPRAYED INTO THE VICINITY OF THE CUTTING ACTION AT THE RATE OF FROM .02 TO .15 POUND PER POUND OF TACKY MATERIAL, (2) ENOUGH AIR, HAVING A RELATIVE HUMIDITY LESS THAN 60% AND A TEMPERATURE NOT OVER 20*C. IS BROUGHT INTO CONTACT WITH THE SPRAY TO EVAPORATE SUBSTANTIALLY ALL OF IT, AND (3) SIMULTANEOUSLY A DUSTING AGENT SUCH A TALC IS BROUGHT INTO CONTACT WITH THE TACKY MATERIAL BEING CUT, AT THE RATE OF .02 TO .10 POUND PER POUND OF TACKY MATERIAL.
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| 275 | Method for agglomerating suspended particles | US3577489D | 1968-04-26 | US3577489A | 1971-05-04 | ROSENTHAL CHRISTIAN |
| A PLURALITY OF FINELY SUBDIVIDED SOLID PARTICLES IS CONVERTED INTO A MASS OF DISTINCT AGGLOMERATED BODIES BY SUSPENDING THE SOLID SUBDIVIDED PARTICLES IN WATER HEATED TO AT LEAST 80*C. THE PARTICLES MUST BE SUCH THAT WATER IS INERT THERETO AND WHICH ARE AT MOST SLIGHTLY SOLUBLE IN WATER. THE GRANULATING AGENT IS A SYNTHETIC ORGANIC PLASTIC WHICH IS DISSOLVED IN A LIQUID ORGANIC SOLVENT AT AT LEAST 80*C. THE GRANULATING SOLUTION IS THEN ADDED TO THE SUSPENSION AND THE THUS-FORMED MIXTURE IS MAINTAINED, PREFERABLY UNDER STIRRING, AT AN ELEVATED TEMPERATURE BELOW 100*C. AND SUFFICIENTLY HIGH TO FORM GRANULES OF THE FINELY SUBDIVIDED PARTICLES AND THE GRANULATING AGENT SO THAT A PLURALITY OF AGGLOMERATED BODIES EACH COMPRISING A PLURALITY OF THE FINELY SUBDIVIDED PARTICLES ADHERED TO EACH OTHER BY THE GRANULATING AGENT WILL BE OBTAINED.
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| 276 | Method for compacting particulate material | US3557267D | 1968-12-31 | US3557267A | 1971-01-19 | ANGELOTTI WILLIAM J; PROFFITT JAMES R JR; REYBURN NATHANIEL R; FROTELLO LOUIS L SAN |
| AN APPARATUS FOR VOLUMETRICALLY MEASURING AND COMPACTING A THERMOSETTING PLASTIC RESIN SUCH AS MELAMINE. AN APPARATUS EMPLOYING A HIGH FREQUENCY LOW AMPLITUDE VIBRATION IN A HORIZONTAL DIRECTION AND A LOW FREQUENCY HIGH AMPLITUDE VIBRATION IN A VERTICAL DIRECTION TO EFFECT COMPACTION OF MELAMINE POWDER. A METHOD OF MEASURING A POWDERED MELAMINE BY A VOLUMETRIC CHAMBER, DELIVERING THE MELAMINE TO A VIBRATION CHAMBER SO THAT IT FORMS A SPECIFIC CONFIGURATION SUITABLE FOR OPTIMUM COMPACTION UNDER BIAXIAL VIBRATION.
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| 277 | Pelletization of finely divided solids | US3483594D | 1967-06-15 | US3483594A | 1969-12-16 | HEWITT KENNETH D |
| 278 | Method for agglomerating granular polytetrafluoroethylene | US39696764 | 1964-09-16 | US3366615A | 1968-01-30 | MILLER WILLIAM A |
| 279 | Apparatus for manufacturing continuously cellulose esters from cellulose ester solution | US45849765 | 1965-04-05 | US3331099A | 1967-07-18 | SOHEI SAITO; YUTAKA YAGI; SATORU TSUNODA; NAOSHIGE FUYIMOTO; KENICHI IRIE; YAHIRO HATANO |
| 280 | Recovery of polymers from slurries | US24977863 | 1963-01-07 | US3293227A | 1966-12-20 | BOGGESS HENRY F; WROBLESKI JEROME C |
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