Abstract: A chemical composition for use with polyvinyl chloride that may be used to increase the rate at which the polyvinyl chloride breaks down or disintegrates after being discarded as the surface gradually forms defects, holes, or cracks, including when in a landfill, wherein the chemical composition includes the chemicals PBAT, PCL, EVA, CPE, PLA, PGA, PHA, PHB, PE, PVA, PBS, PPC, and PET.

Abstract: A process for producing a precursor material comprising the steps of, agitating a polymer material and a fibre material in a blending device comprising a blending means operating at a velocity sufficient to bring about an increase of the temperature to at least a temperature beyond the VI CAT softening point or within or beyond the melting temperature range of the polymer material. Thereafter, maintaining the velocity of the blending means and, when the specific motor power needed to maintain the velocity of the blending means increases by a predetermined amount or reaches a predetermined value, reducing the velocity. Repeating the previous step as necessary, until the velocity falls below a first threshold value to form an intermediate material. Finally, comminuting the formed intermediate material in a comminuting device comprising a comminuting means operating at a velocity allowing a decrease in temperature, until the temperature falls below a second threshold value.

Abstract: A gravimetric blender has a frame, at least one material storage hopper at the top of the frame including a hopper cover, a weigh bin located within the frame, below the hopper, for receipt of material from the hopper to be weighed and being adapted for downward discharge of the material in the bio bin after the material received from the hopper has been weighed, at least one load cell connecting the weigh bin to the frame for sensing the weight of contents of the weigh bin, a mixer within the frame below the hopper, for mixing material weighed in the weigh bin after that material falls downwardly from the weigh bin to the mixer, and a guide adapted for vertical movement of the hopper cover therealong between positions which the cover contacts and thereby closes the hopper and at which the cover is spaced vertically above the hopper so that the hopper is open at the top.

Abstract: The present invention provides an apparatus for processing a rubber. The apparatus is equipped with an enclosed kneading chamber; a charging port for charging a material into the kneading chamber; a stirring rotor for stirring the material in the kneading chamber; a control section for automatically controlling the rotational speed of the stirring rotor; and a temperature sensor for detecting an interior temperature of the kneading chamber and outputting the detected information regarding the interior temperature to the control section. The control section automatically controls the rotational speed by a PID control configured to attempt to match the actual temperature with the target temperature until expiration of a control time being set in a state where the material containing a rubber component exists in the kneading chamber, based on the information regarding the actual temperature and information regarding a target temperature being set.

Abstract: The system includes: a closed-type rubber kneader that kneads kneading materials that include raw rubber and carbon black; a rotation meter of a rotor; a power meter that measures the instantaneous power required to drive the rotation of the rotor; and a calculation device to which the measurement data is input. The calculation device calculates an evaluation index that evaluates the kneading efficiency of the kneader based on the total amount of shear calculated by integrating the shear velocity applied to the kneading materials by the rotor over the kneading time, and a unit work calculated by dividing the integrated power obtained by integrating the instantaneous power over the kneading time by the mass of the kneading materials.

Abstract: A system for blending polymers and other chemicals in an aqueous liquid is provided. Static mixers and tubes, preferably in one or more tube bundles, provide a volume sufficient to allow a residence time in the system to hydrate a polymer. Static mixers may be integrated with a tube bundle. The system may be mounted on a portable base such as a trailer. The concentration of polymer and chemicals in water may be controlled by a controller. A variable speed electric pump or a metering valve may be utilized to precisely control the amount of polymers or other chemicals added to the aqueous liquid.

Abstract: There is provided a method (200) for decreasing acetaldehyde level in a molded article. The method (200) of decreasing acetaldehyde content in a molded article to be produced comprises introducing (202) into a feed throat (120) of an injection unit (100) a PET material to be plasticized, the PET material having been dried in a pre-treatment chamber (130); and introducing (204) into the feed throat (120) an un-treated agent (136) configured to increase moisture level of the PET material to be plasticized. In some embodiments of the present invention, the un-treated agent (136) is also configured to provide additional lubrication to the plasticizing screw (106).

Abstract: A method for intermittent production and continuous supply of a resin-filler mixture in the course of production of plastic molded parts and an installation for intermittent production and continuous supply of a resin-filler mixture. A method and an installation, by which it is possible to ensure a continuous supply of a resin-filler mixture reliably and in continuous operation, an optimum and precise mixing ratio of the individual constituents of a resin-filler mixture, mostly consisting of a resin mixture and fillers, in which components, particularly portions of very small or highly viscous components, are dispersed finely and uniformly. Optimizing the production of resin-filler mixture for the supply of small components and achieving a continuous supply of the resin mixture that is reliable for continuous operation occurs.

Abstract: The present invention includes a kneading chamber (2) which kneads a material to be kneaded (G), a gas introduction part (3) which introduces an inert gas in the chamber (2), a concentration measurement part (4) which measures the oxygen concentration in the chamber (2); an arithmetic operation section (30) which performs operation to make the inside of the chamber (2) achieve the target oxygen concentration; and a control section (31) which controls the part (3) according to the result obtained by the section (30); wherein the section (30) performs operation to set the inside of the chamber (2) to the target oxygen concentration while comparing the oxygen concentration measured during kneading by the part (4) and target oxygen concentration set in advance; and the section (31) controls a purge flow rate and purge time of an inert gas introduced in the kneading chamber (2) from the part (3) based on the operation result, in kneading performed after the operation.

Abstract: A method for operating an apparatus with at least one rotating shaft, the at least one rotating shaft comprising functional elements which act on material to be processed in the apparatus, the apparatus comprising a filling orifice and an outlet orifice with an adjustable lower edge, and material being conveyed continuously through the apparatus from the filling orifice to the outlet orifice, said method comprising the following steps: a) measuring load data for the at least one rotating shaft in order to determine shaft load, b) lowering the lower edge of the outlet orifice and/or reducing the quantity of material supplied if the shaft load exceeds a specified maximum load, or displacing the lower edge of the outlet orifice upwards and/or increasing the quantity of material supplied if the shaft load is less than a specified shaft load.

Abstract: A system and method for extrusion of dough is disclosed. The system includes an auger for moving the dough; a metering pump comprising an input; a first motor for actuating the auger to transfer dough to the input of the metering pump; a first encoder for reading a position or speed of the first motor and for transmitting a signal associated with the position or speed of the first motor; and a controller configured to receive the signal from the first encoder to control operation of the first motor. The controller operates the first motor to at least partially counteract a variance in a pressure of dough at the metering pump based signals from the encoder and/or the pressure sensor.

Abstract: Methods and systems for preparing a binder system are provided. The method can include combining a first resin and a second resin to produce a first binder system. The first binder system can be applied to a first plurality of lignocellulose substrates and at least partially cured to produce a first composite product. The method can also include monitoring one or more process variables. The one or more monitored process variables can be evaluated. An amount of the first resin, the second resin, or both combined with one another can be adjusted in response to the evaluation of the one or more monitored process variables to produce a second binder system.

Abstract: Methods and systems for preparing a binder system for use in producing fiberglass products are provided. The method can include combining at least a first resin and a component to produce a first binder system. The component can include a second resin, an additive, or a combination thereof. At least a portion of the first binder system can be applied to a first plurality of fibers. One or more process variables can be monitored. The one or more process variables can be evaluated. An amount of the first resin, the component, or both combined with one another can be adjusted in response to the evaluation of the one or more monitored process variables to produce a second binder system.

Abstract: A computerized method for simulating a fluidized state of a plastic material in a chamber, comprises steps of: generating a chamber model which is a finite volume model of the chamber; defining a material model of the plastic material; defining a gas-phase model of gas; and making a flow calculation of the material model and the gas-phase model which are in the chamber model, wherein the material model is provided with viscosity of the plastic material, and the gas-phase model is provided with viscosity which is more than the actual viscosity of the gas.

Abstract: A process for continuously producing an elastomeric composition includes the step of dosing into at least one extruder at least one ingredient by means of a dosing device, wherein the dosing step is regulated on the basis of: i) actual weight values of the at least one ingredient measured at dosing instants of an evaluation time period of predetermined duration preceding a given dosing instant; ii) expected weight values of the at least one ingredient calculated for corresponding dosing instants of the evaluation time period of predetermined duration preceding the dosing instant; and iii) expected weight values of the at least one ingredient calculated for a prediction time period of predetermined duration following the dosing instant; so as to minimize a prediction weight error between actual weight values measured during the prediction time period and the expected weight values calculated for the prediction time period, and a model weight error between actual weight values measured during the prediction tim

Abstract: A well treatment method includes drawing a solvent to a first pump, drawing a wetting liquid to a second pump, pumping the wetting liquid through a polymer mixer using the second pump, combining polymer with the wetting liquid to produce a slurry containing undissolved polymer, and combining the slurry with the solvent upstream from the first pump. Another well treatment method includes increasing dissolution time of the polymer by providing a buffering agent in the wetting liquid before combining the wetting liquid and the polymer. A well treatment system includes a polymer mixing subsystem with a mix loop having a mix loop inlet line from a first pump feed line and a mix loop outlet line back to the first pump feed line, the mix loop outlet line containing a polymer mixer.

Abstract: A gravimetric blender has a frame; a resin material storage hopper supported by the frame, including a hopper cover; a weigh bin located below the hopper for receiving resin material from the hopper downwardly discharging the bin contents after the contents have been weighed; a load cell, connecting the frame and the weigh bin, for sensing weight of the weigh bin; a mixer connected to the frame, below the hopper, for mixing received contents of the weigh bin; and a guide connected to the frame, for movement of the hopper cover therealong.

Abstract: A method produces a composite material using a mixing system. The composite material comprises at least one aggregate, e.g. rock and/or glass, and the reaction product of a two-component polymeric binder composition comprising a first component, e.g. an isocyanate component, and a second component, e.g. an isocyanate-reactive component. The mixing system includes a mixing apparatus. The method includes the step of providing the aggregate, the first component and the second component into the mixing apparatus. The method further includes the step of mixing the first and second components to produce the reaction product of the two-component polymeric binder composition, and the step of applying the reaction product of the two-component polymeric binder composition to the aggregate within the mixing apparatus to produce the composite material. The composite material can be used for forming a paved structure, such as a sidewalk or a roadway.

Abstract: The present invention provides blowing agent introduction systems and methods for introducing blowing agent into polymeric foam processing systems. The methods may involve introducing one or more doses of blowing agent into polymeric material in an extruder during a plastication period of a molding cycle. Prior to introduction, a dose is confined in an accumulator which, for example, has a volume defined between an inlet valve and an outlet valve. A control system may receive inputs related to system parameters (e.g., pressure of polymeric material in extruder, axial position of screw in barrel, whether screw is rotating, and the like) and based on the inputs coordinates operation of the valves to confine and introduce the blowing agent dose(s). The introduction systems may be used in discontinuous plasticating processes, such as injection molding and blow molding, and can be particularly useful in processes that use precise quantities of blowing agent.

Abstract: An apparatus for dosing and mixing solid powders in technological processes for converting plastic materials, comprising an assembly for dosing the solid powders to be mixed with a first process liquid before mixing with an additional process liquid, the dosage assembly comprising at least one hydraulic cylinder for introducing the powders at a preset pressure which is correlated to the pressure of the first process liquid kept at a controlled pressure.

Abstract: A blending apparatus is provided, the blending apparatus including: an outer tube; and at least one inner tube disposed inside the outer tube, wherein a distal end, in a lengthwise direction, of the inner tube is located at an intermediate position, in a lengthwise direction, of the outer tube, and the inner tube has plural of through holes in a vicinity of the distal end thereof.

Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.

Abstract: A high-shear melt-kneader includes a high-shear unit (20) having an internal feedback-type screw (23) configured to apply high-shear stress to a melted resin, resin pressure sensors (33) for configured to detect a front portion resin pressure in the vicinity of an inlet of the internal feedback-type screw and a rear portion resin pressure in the vicinity of an outlet, and a control device configured to appropriately control a material supplying amount, a material temperature, a kneading time, and a screw rotation speed according to pressure values detected by the sensors. The control device controls the conditions such that waveforms with the lapse of time of the front and rear portion resin pressures are similar to each other and show variation to a steady state after formation of a predetermined peak value, and the front and rear portion resin pressures form a predetermined pressure difference with the lapse of time.

Abstract: A screw extruder is presented including a feed hopper for receiving materials and a body member having at least one supply port and at least one outlet port. The screw extruder also includes a screw positioned within the body member and movable along a channel defining a longitudinal axis. The screw extruder further includes a drive shaft for rotatably driving the screw along the channel. The screw extruder may be configured to mix the materials received via the feed hopper with a series of one or more forward, neutral, and reverse kneading elements.

Abstract: The invention relates to a method for preparing a composite material of more than one component with the steps of providing at least two resin components (Ka, Kb, . . . Kx) in at least one container (f), measuring the at least two resin components (Ka, Kb, . . . Kx) in the at least one container (f), making each of the at least one container (f) with the respective resin components (Ka, Kb, . . . Kx) separately available to a mixer (h), mixing of the respective resin components (Ka, Kb, . . . Kx) in the at least one container (f) to a resin compound and filling of the resin compound from the at least one container (f) into a supply station (a) of an injection device for a composite material.

Abstract: There is provided a method (200) for decreasing acetaldehyde level in a molded article. The method (200) of decreasing acetaldehyde content in a molded article to be produced comprises introducing (202) into a feed throat (120) of an injection unit (100) a PET material to be plasticized, the PET material having been dried in a pre-treatment chamber (130); and introducing (204) into the feed throat (120) an un-treated agent (136) configured to increase moisture level of the PET material to be plasticized. In some embodiments of the present invention, the un-treated agent (136) is also configured to provide additional lubrication to the plasticizing screw (106).

Abstract: A method for intermittent production and continuous supply of a resin-filler mixture in the course of production of plastic molded parts and an installation for intermittent production and continuous supply of a resin-filler mixture. A method and an installation, by which it is possible to ensure a continuous supply of a resin-filler mixture reliably and in continuous operation, an optimum and precise mixing ratio of the individual constituents of a resin-filler mixture, mostly consisting of a resin mixture and fillers, in which components, particularly portions of very small or highly viscous components, are dispersed finely and uniformly. Optimizing the production of resin-filler mixture for the supply of small components and achieving a continuous supply of the resin mixture that is reliable for continuous operation occurs.

Abstract: Gum manufacturing machinery and method of manufacturing gum is illustrated in which a gum loafing machine generates loaves of finished gum that are then subsequently run through a gum conditioner to more uniformly set the temperature and viscosity of the gum material prior to further processing. Upon achieving the appropriate conditioning level, a further forming extruder may be used to generate a continuous gum ribbon for subsequent rolling and scoring operations. The gum conditioner may include vertically stacked conveyors that have different operational modes including a first mode that provides a serpentine path for a long residence time and a second mode that provides a cascading path that avoids or bypasses much of the length of some of the conveyors to provide a shorter residence time. The gum manufacturing machinery may be used in an adjustable manner so as to accommodate difference gum recipes for different batches of gum product.

Abstract: A process for continuously producing an elastomeric composition includes the step of dosing into at least one extruder at least one ingredient by means of a dosing device, wherein the dosing step is regulated on the basis of: i) actual weight values of the at least one ingredient measured at dosing instants of an evaluation time period of predetermined duration preceding a given dosing instant; ii) expected weight values of the at least one ingredient calculated for corresponding dosing instants of the evaluation time period of predetermined duration preceding the dosing instant; and iii) expected weight values of the at least one ingredient calculated for a prediction time period of predetermined duration following the dosing instant; so as to minimize a prediction weight error between actual weight values measured during the prediction time period and the expected weight values calculated for the prediction time period, and a model weight error between actual weight values measured during the prediction tim

Abstract: An extrusion conveying device having an extruder for the mixing of components, in particular a rubber mixture or TPE. A volumetrically operating conveyor, especially a gear pump, is disposed at the output side of the extruder. A subsidiary conveyor supplies to the extruder at least one component having a marker substance. A detection device for the marker substance is disposed on the output side of the extruder and/or the volumetrically operating conveyor for detecting the distribution quality of the marker substance. A control device is coupled to the detection device for adjusting the speed of the extruder and/or the volumetrically operating conveyor in response to the detected distribution quality of the marker substance detected by the detection device.

Abstract: A blending apparatus is provided, the blending apparatus including: an outer tube; and at least one inner tube disposed inside the outer tube, wherein a distal end, in a lengthwise direction, of the inner tube is located at an intermediate position, in a lengthwise direction, of the outer tube, and the inner tube has plural of through holes in a vicinity of the distal end thereof.

Abstract: At least one organic molecular chain is strongly bonded to a surface of active material. By using a treated active material in which at least one organic molecular chain is strongly bonded to a surface of active material, it is possible to maintain a charge-discharge characteristic of a secondary battery or the like at a good level over a long period. A treated material 1 is obtained by chemically adsorbing organic molecular chains 5 onto a surface of active material 3. A bonding force between the active mass 3 and organic molecular chains 5 is 40-400 kJ/mol. In a case where the bonding force between the active material 3 and organic molecular chains 5 is 40-400 kJ/mol, when the treated active material 1 is used as an electrode active material of a secondary battery or the like, the charge-discharge characteristic of the secondary battery can be maintained at a good level over a long period.

Abstract: A system and method for extrusion of dough is disclosed. The system includes an auger for moving the dough; a metering pump comprising an input; a first motor for actuating the auger to transfer dough to the input of the metering pump; a first encoder for reading a position or speed of the first motor and for transmitting a signal associated with the position or speed of the first motor; and a controller configured to receive the signal from the first encoder to control operation of the first motor. The controller operates the first motor to at least partially counteract a variance in a pressure of dough at the metering pump based signals from the encoder and/or the pressure sensor.

Abstract: A device for mixing and/or kneading food products is provided with a container having an inlet, an outlet as well as at least two counter-rotating shafts that extend substantially in the longitudinal direction of the container. Each shaft is fitted with at least one tool, which tool comprises at least one bar that helically surrounds the shaft, which bar is fixed to the shaft by means of spacers. The bar extends substantially as one whole over an operative area of the shaft.

Abstract: An extrusion conveying apparatus, including an extruder that operates as a mixing device and is laterally supplied with components that are to be mixed, in particular components of a rubber mixture or thermoplastic elastomer. A volumetrically operating conveyor, in particular a gear pump, is connected to the output side of the extruder. A rotational speed or feed rate of the extruder is adjustable independently of the feed rate and volume flow of the conveyor. n?1 volumetric subsidiary conveyors are provided for passage of components therethrough where there are n components of a mixture. In particular component n is supplied in an undosed manner. A rotational speed or feed rate of the subsidiary conveyors is adjustable independently of the feed rate of the volumetrically operating conveyor.

Abstract: A melt-kneading method for filling material-containing resin or elastomer includes: a step of preparing a filling material as a filler and a resin or elastomer comprising an incompatible blend; and a step of introducing the filling material-containing resin or elastomer into a material feed part provided at an end of a cylindrical melt-kneading part having a heater and provided with a screw, and then melt-kneading the filling material-containing resin or elastomer under conditions where the rotation speed of the screw is about 600 rpm to about 3,000 rpm and its shear rate is about 900 to about 4,500 sec?1, thereby forming a co-continuous structure comprising the incompatible blend.

Abstract: An apparatus for filling a screw (7) bearingly supported within a housing (6), in particular of an extruder, for processing of pre-comminuted synthetic plastics material, in particular PET, has a filling opening (5) for the screw housing (6). This filling opening (5) is in flow connection with the lower outflow opening (4) of an upright receptacle 81) for the material to be processed. Within the receptacle (1), tools (30, 31) circulate around a, preferably vertical, axis, which tool act onto the material positioned within the receptacle (1). This material is introduced into the evacuable receptacle (1) through a sluice (60). A quickly circulating tool (30) for creating a mixing cone (71) is disposed between an upper interior portion (68) and a lower interior portion (69) of the receptacle (1).

Abstract: The invention provides an injection molding capable of adjusting a detection level with a simple structure and detecting a deposit level of the resin pellets near a plasticizing screw. A cooling jacket is mounted so that a resin supplying hole of the cooling jacket communicates with a resin supplying hole of a heating cylinder. A sensor head mounted on a sensor mounting plate is inserted into the resin supplying hole through a sensor insertion port provided on a hopper plate and a resin inlet and detects the deposit level of the resin pellets deposited in the resin supplying hole. Changing the extent of insertion of the sensor head enables the resin pellets deposit detection level to be changed, and further, enables the deposit level near the outer periphery of the screw to be detected. Setting the sensor detection direction perpendicular to the resin deposit direction enables dirtying of the sensor detection surface by the resin pellets to be reduced, thus enabling erroneous detection readings to be reduced.

Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.

Abstract: A method for evaluating and controlling a mixing process for polymer-based compounds includes the steps: obtaining initial starting conditions and values for viscosity dependent parameters; increasing batch temperature by a differential amount; calculating mixing parameters such as batch temperature, dispersion, viscosity, and torque based upon fundamental kinetic, thermodynamic, and theological models; determining whether an endpoint or end points of one or more mixing parameters has been achieved; and changing one or more conditions so as to achieve the desired endpoint(s).

Abstract: A colored plastics molding device can perform automatic calibration, and thus colorant can be charged, being free from wrong calculation and error, and therefore, high-quality colored plastics molded items can be obtained.

Abstract: A colored plastics molding device with which calibration is automatically performed, and thus the colorant can be charged, being free from wrong calculation and error, therefore, high-quality colored plastics molded items can be obtained.

Abstract: A continuous kneading apparatus and method are provided wherein discharge ports are provided at a plurality of positions of the barrel to discharge a kneaded product, and one of the plurality of the discharge ports is selected according to a desired kneading condition so as to discharge the kneaded product from only the selected discharge port. Another continuous kneading apparatus and method are provided wherein a plurality of charging ports are provided at a plurality of positions of the barrel to supply a material to be kneaded into the chamber, and one of the plurality of charging ports is selected according to a desired kneading condition. The kneading apparatuses and methods permit adjustment and control of a viscosity and a dispersion degree of a compounding agent over a wide range, and continuous kneading to achieve significant rationalization of a process for producing a kneaded product.

Abstract: A resin extrusion apparatus having a weighing device (11) connected to a controller (18). A powder container (12) for supplying a powder (Y) to a resin extruder (20), a screw (13), and a motor (14) are installed over the weighing device 11. The motor (14) rotates a powder feeder (10) in proportion to a frequency of an inverter (17) connected to the controller (18). The powder feeder (10) is installed on the resin extruder (20). The powder feeder (10) supplies the powder (Y) to the resin extruder (20) quantitatively by a feedback control that is executed at regular intervals. The resin extruder (20) heats and kneads the powder (Y) and a resin (X) supplied thereto from a hopper (21) to form a resin pellet P containing the powder (Y) and the resin (X) mixed uniformly with each other.