СПОСОБ И УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ ТЕМПЕРАТУРЫ ПЛАСТИФИЦИРОВАННОЙ ПЛАСТМАССЫ НА ВЫХОДЕ ЭКСТРУДЕРА И СПОСОБ И УСТРОЙСТВО ДЛЯ ЭКСТРУЗИИ ПЛАСТМАССЫ

Заявленная группа изобретений относится к способу бесконтактного измерения температуры пластифицированной пластмассы на выходе из экструдера. Техническим результатом заявленной группы изобретений является упрощение точного бесконтактного измерения температуры расплава. Технический результат достигается способом измерения температуры пластифицированного пластического материала на выходе экструдера. При этом снимают функцию зависимости скорости звука от температуры и запоминают указанную функцию, по меньшей мере, для одного пластифицированного пластического материала. Причем измерение скорости звука производят в процессе экструзии пластического материала, а соответствующую температуру определяют на основе измеренных значений скорости и указанной функции. Кроме того, помимо указанной функции зависимости скорости звука от температуры снимают и запоминают функцию зависимости скорости звука от давления, по меньшей мере, для одного пластифицированного пластического материала. Причем измерение ...

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON ELASTOMEREN MATERIALBESTANDTEILEN EINES REIFENS FÜR FAHRZEUGRÄDER

Vorrichtung zum Regeln des Rueckdrucks an zweispindeligen Extrudern

Control method for maintaining operational reliability on a screw extruder, used with viscous pastes combines and considers material input parameters and output parameters

Material input and output parameters during extrusion are combined and used to control the process operation. Input material parameters utilized include temperature, moisture content, density and color and output parameters include energy use at a specific point, rotational speed of the processing screw (2) with the theoretical output, extrusion speed and operational times.

A method and apparatus for reducing wastage during start-up of a multiple-head extrusion device

A method of reducing wastage during the start-up phase of an extrusion device used to produce extruded profiles such as tread strips for vehicle tires from a plurality of mixtures is disclosed. The extrusion device comprises a plurality of extruders each extruding a component of the profile and each extruder has its own drive means. The outlets from the extruders communicate with a template member having flow channels formed therein which lead into a common extrusion port. The drive means are actuated simultaneously and the pressure of each of the components is monitored in the outlet region of each extruder. These pressures are compared with a pre-determined desired pressure by a control device, which device switches-off the appropriate drive means as each desired pressure is attained. When all desired pressures have been attained, all of the drive means are re-actuated simultaneously by the control device. In a minor modification of the method, the drive means for the final extruder to ...

EXTRUDER

Recycled thermoplastic processing plant comprises two evacuated mixing vessels with temperature sensors, an inlet side vacuum sluice and an outlet to an extruder

Two vacuum-connected processing vessels are connected and have rotating tools for mixing and warming material. A material inlet (19) of the first vessel (1) is connected to a sluice (6). Tools rotate in both vessels and (19) is above the uppermost tools in (1). An outlet (49) from the second vessel (2) leads to an extruder (62). Temperature sensors (32) are located on each tool plane. A recycled thermoplastic processing plant comprises two vacuum-connected processing vessels connected to each other and having tools rotating around vertical axes for mixing and warming material. A material inlet (19) of the first vessel (1) is connected to a sluice (6). Tools rotate in several planes one above the other in both vessels and the inlet is above the uppermost tools in the first container. An outlet (49) from the second vessel (2) leads to an extruder (62) and is at the level of the lowest tools in the latter. A temperature sensor(32) is located on each tool plane in both vessels.

VERFAHREN ZUR HERSTELLUNG VON PROFILEN AUS THERMOPLASTISCHEM KUNSTSTOFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

DEVICE FOR THE PROCESSING OF THERMOPLASTIC PLASTIC MATERIAL

VERFAHREN ZUR HERSTELLUNG VON PROFILEN AUS THERMOPLASTISCHEM KUNSTSTOFF

KNEADING DEVICE FOR KNEADING COMPOSITIONS ON INDIA RUBBER BASIS WITH THE DEVICE

PROCEDURE AND DEVICE FOR GRANULATING PLASTICS AND/OR POLYMERS

RULE DEVICE FOR THE SUPPLY QUANTITY OF A PLASTIFIZIERBAREN MATERIAL

PRECISION PU PRODUCTION

DEVICE FOR THE PLASTIFIZIEREN OF PLASTIC.

VORRICHTUNG ZUR BESTIMMUNG DES BETRIEBSZUSTANDES EINES EXTRUDERS ZUR ERZEUGUNG EINES KUNSTSTOFFPROFILS

The invention relates to a device for determining the operational status of an extruder that is used for the productive of a plastic profile. At least one measuring device for determining the quality of the melt is provided in an adapter part between an extrusion cylinder ( 3 ) and an extrusion nozzle ( 5 ). An especially exact determination of the extruder state is possible if the measuring device comprises a tube through which melt is continuously drawn off from the adapter part during the measurement and on which at least one pressure is disposed.

PROCEDURE AND DEVICE FOR THE SPECTROSCOPIC INVESTIGATION OF PLASTIFIZIERTEN EXTRUDATEN

Device for the continuous production of plastic profiles

BLOWING HEAD FLUSHING

PROCEDURE FOR THE HANDLING OF LIQUIDS OF MEANS OF A BUFFER TANK

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

Precision polyurethane manufacture

On-line rheometer device

CONTINUOUSLY BLENDING, MOLDING AND CURING HEAT CURABLE POLYMERIC COMPOUNDS

LOW ENERGY PROCESSING OF THERMOPLASTIC POLYMERS

3-D CONTINUOUS SHAPING OF EDIBLE-BASED EXTRUDATES

A chew toy of non-uniform shape may be manufactured from an edible starch composition by introducing said composition to an extruder having a barrel and subjecting the composition to shear and heat to form a melt, and conveying the melt through an adjustable orifice while varying the cross-section dimensions of the orifice to form an extrudate having thickness dimensions that varies along its length. This may be followed by cutting the extrudate to length. The extrudate may also be passed between cooperating cavities and formed to shape. The extrudate may also be guided into predetermined patterns by repositioning the die relative to a molding surface.

FLUID TEMPERATURE AND PRESSURE ADJUSTMENT METHOD AND APPARATUS

SIMULATION APPARATUS FOR SCREW EXTRUDER VOLATILIZATION AND SIMULATION PROGRAM FOR SCREW EXTRUDER VOLATILIZATION

A simulation apparatus, and program, for screw extruder volatilization, being capable of practical simulation of the volatilization process of screw extruder. There is provided an extruder simulation system capable of simulation of volatilization condition through computing of intra-extruder resin temperature, pressure, stay time, filling ratio, torque, power, solid-phase occupancy and volatile contents concentration as a distribution in the direction of extruder axle from extruder apparatus structure, operating conditions and resin properties, which extruder simulation system includes means for arithmetical operation for the process of gradual decline of volatile contents concentration of the resin by volatilization by vent cylinder.

MONITORING CONCENTRATION OF DOPE IN PRODUCT MANUFACTURE

Monitoring means are provided to control the concentration of a dope of cellulose/amine oxide/water solution for use in the manufacture of continuous filaments of solvent-spun cellulose. The dope may be formed by preparing a mixture of cellulose amine oxide solvent and water, and heating the mixture to drive off excess water to form the hot dope solution which is then passed to a die assembly which forms strands from the dope which are then further processed to make the filaments of solvent-spun cellulose. The concentration of the solution is monitored by measurement of its refractive index and maintenance of the refractive index within specified limits by adjustment of the water content ensures that the dope concentration is such as to produce a good product.

METHOD FOR SIMULTANEOUS CONTROL OF MULTIPLE ACCUMULATORS

A method for cascade, closed loop control of multiple operating parameters f or an extrusion blow molding machine having multiple accumulators is disclosed. The method provides closed loop control of the ra m back pressure during refill, along with the closed loop adjustment of the pressure set points for "slave" accumulators based on a comparison of ram positions with that of a "master" accumulator. For systems that supply each accumulator with a separate extruder, the rotational speed of the extruder screw is the controlled operating parameter during refill. With respect to extrusion of the parisons, there is closed loop control of the ram velocity in conjunction with adjustment of the velocity set points for the slave accumulators based on a comparison of ram positions with that of the master accumulator.

EMBEDDING AND ENCAPSULATION OF CONTROLLED RELEASE PARTICLES

Controlled release, discrete, solid particles which contain an encapsulated and/or embedded component such as a heat sensitive or readily oxidizable pharmaceutically, biologically, or nutritionally active component are continuously produced without substantial destruction of the matrix material or encapsulant. A release-rate controlling component is incorporated into the matrix to control the rate of release of the encapsulant from the particles. The additional component may be a hydrophobic component or a high water binding capacity component for extending the release time. The plasticizable matrix material, such as starch, is admixed with at least one plasticizer, such as water, and at least one release-rate controlling component under low shear mixing conditions to plasticize the plasticizable material without substantially destroying the at least one plasticizable material and to obtain a substantially homogeneous plasticized mass. The plasticizer content is substantially reduced and ...

Procédé pour former d'une manière continue des profilés en matière thermoplastique et appareil pour la mise en oeuvre de ce procédé.

Spritzgussverfahren für thermoplastische Kunststoffe

Einrichtung zum Steuern der Gutzufuhr von einem Kunststoffextruder zum Spritzkopf

Extruder - with two flow regulations one in plasticising - one in pressurising zones

An extruder comprises a screw revolving in a barrel and having a first plasticising zone (I) and a second pressurising zone (II), with a de-gassing vent between them; there are two flow regulator devices, one for each of these zones. In (I) the regulator device comprises a throttle and, downstream of this and close to the de-gassing vent, a fill detector for measuring the quantity in the barrel; a signal fed from the fill detector to a regulator is converted by the regulator into a fill level signal and is c.f. a reference level; as a function of the difference between these two, an actuator modifies the setting of the throttle. In (II) there is another throttle and, upstream of this, a pressure detector, which in a similar manner feeds a pressure signal to a regulator; the actuator modifies the setting of the throttle; the arrangement is such that the flow rates resulting from the throttle sections are maintained equal.

Verfahren und Einrichtung zum Steuern der Zufuhrrate von plastisch verformbarem Material in eine Schrauben-Extrudiereinrichtung

Extrudeuse

EXTRUSION MECHANISM.

PROCEDURE FOR THE ENTERPRISE OF A SCREW-TYPE EXTRUDING MACHINE AND A RULE ARRANGEMENT FOR THE EXECUTION OF THE PROCEDURE.

Extrusion of polymers

Processes and apparatus for melt extrusion of polymeric compositions, particularly conductive polymers, in which a gear pump delivers molten polymeric composition to an extrusion orifice. Overfeeding of the composition due to pressure variations is avoided by means of a polymer relief means, preferably a second, smaller gear pump, which removes a portion of the molten composition when the pressure exceeds a selected level.

Method and device for granulating plastics and/or polymers

A method and apparatus for the pelletization of plastics and/or polymers, in which a melt coming from a melt generator is supplied via a diverter valve having different operating positions to a plurality of pelletizing heads through which the melt is pelletized. The plurality of pelletizing heads have different throughput capacities and are used sequentially for the start-up of the pelletizing process, with the melt first being supplied to a first pelletizing head having a smaller throughput capacity and then the melt volume flow being increased and the diverter valve being switched over such that the melt is diverted by the diverter valve to a second pelletizing head having a larger throughput capacity.

УСТРОЙСТВО ДЛЯ ИЗГОТОВЛЕНИЯ РЕЗИНОВОГО ПОЛОСОВОГО МАТЕРИАЛА

Изобретение относится к устройству для изготовления резинового полосового материала, содержащего корд. Техническим результатом заявленного изобретения является возможность осуществления очень широкого диапазона управления (5-100% скорости работы) для получения резиновой полосы с высокой воспроизводимостью формы и степени пластикации. Технический результат достигается устройством, которое включает в себя экструдер, имеющий встроенный шестеренчатый насос с регулируемой скоростью работы и подающий шнек, для экструдирования невулканизированной резины вокруг корда для изготовления бесконечной резиновой полосы. Устройство дополнительно содержит управляющее устройство регулирования скорости работы шестеренчатого насоса и измерительное устройство для измерения высоты и ширины резиновой полосы и для формирования сигнала измерения, соответствующего величине измеренной высоты и ширины. Измерительное устройство выполнено с возможностью подключения к управляющему устройству регулирования скорости работы ...

Thermoplastic film manufacture involves cooling tube with coolant and additional atomized fluid which are controled according to various film parameters

An extruded and inflated tubular film(1) is continuously drawn off while chilling with a coolant(5) to which an atomized fluid(9,10) has been added. The level of coolant and/or added fluid is controled in relation to the film thickness and/or film temperature and/or film take-off(4) speed and/or extruder(3) output. Coolant temperature and/or atomized fluid temperature are controled according to film thickness and/or film temperature and/or film take-off(4) speed and/or extruder(3) output. Parameters for process control are measured(7) at points around the circumference of the tubular film(1) and coolant is supplied to different segments accordingly. Fluid can be added to the coolant before or after contact between coolant and film. Coolant is extracted(15) at the end of a selected contact zone between coolant and film. Atomized fluid can be either water or a fluid which evaporates at room temperature and pressure.

Extrusion die for use with extruder during pipe extrusion, has thermocouple element fastened at distance to intermediate bolt for arrangement of heating element, where temperature of bolt is measured by thermocouple element

The die has a base tool (5) provided with an intermediate bolt (5a) and an intermediate sleeve (5b), and a dimension-dependent nozzle insert provided with a bolt (6a) and a sleeve (6b), where the intermediate bolt and the bolt fix an inner contour of a plastic flow channel (7). The tool is connected with the insert. The intermediate bolt and the bolt are rotationally connected around a center axis (8). A thermocouple element (9) is fastened at a distance to the intermediate bolt for arrangement of a heating element (10), where temperature of the bolt is measured by the thermocouple element.

Extrusionsanlage mit minimierten Farbwechselzeiten

Extruder

In an extruder, for extruding thermoplastic synthetic material or rubber or for use for pressing water out of a material, a screw rotates in a cylindrical chamber and helical conveying lands provided on the screw are interrupted at positions at which pins project into the chamber thereby forming grooves to receive the pins. To sense breakage of a pin, for example caused by metal particles in the extrudate, signal-generating means are provided in a blind bore in each pin, receipt of a signal from the signal generating means causing the screw to be stopped from rotating thereby to prevent further damage.

IMBEDDING AND A PACKAGING FROM PARTICLES TO THE CONTROLLED DELIVERY

VORRICHTUNG, EINSATZSTÜCK UND VERFAHREN ZUR HERSTELLUNG VON KUNSTSTOFFPROFILEN

VERFAHREN UND EINRICHTUNG ZUR ANPASSUNG EINES EXTRUSIONSWERKZEUGES AN EINEN EXTRUDER

STARTING VALVE FOR GRANULATION DEVICE

TEMPERATURE-COMPENSATED ULTRASONIC WALL THICKNESS MEASUREMENT.

EXTRUSION MECHANISM.

STATIONAER ARBEITENDER PLASTOGRAPH ZUM TESTEN VON KUNSTSTOFFMISCHUNGEN

DEVICE FOR THE DETERMINATION OF THE OPERATING CONDITION OF AN EXTRUSION

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

PROCEDURE FOR THE ADJUSTMENT OF AN EXTRUDING TOOL TO AN EXTRUSION

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

VЕRFАНRЕN ZUR НЕRSТЕLLUNG VОN РRОFILЕN АUS ТНЕRМОРLАSТISСНЕМ КUNSТSТОFF

Viscoelastic Extrusion Processing Method and Compositions for Biopolymers

A viscoelastic extrusion process (VEEP) for biopolymers such as polylactic acid is provided. The VEEP process removes many processing and performance limitations of PLA as well as creates performance sufficient to produce durable “nonbiodegradable” products as a direct replacement for PVC and other petrochemical profile and sheet extrusion applications. The VEEP process also retains a high degree of crystallinity within the PLA for increasing toughness and to lower its biodegradability. The invention also includes an integral process wherein rheology is highly modified to allow profile extrusion and higher melt strength wherein processing is lower than the melting point of the primary biopolymer and below the browning points of the natural fibers in the biopolymers viscoelastic state.

Method for starting up a processing plant for producing plastics material granulate and processing plant for producing plastics material granulate

In a processing plant for producing plastics material granulate, the start-up takes place in such a way that a screw machine is firstly driven by means of a drive device and then plastics material to be processed is fed by means of a metering device into the screw machine. At least one conveying position of the plastics material in the screw machine is determined by means of a control device by evaluating at least one measuring signal. Depending on the conveying position determined, a granulating device is activated and put into operation. The method according to the invention allows a direct start-up of the processing plant without the use of a start-up valve. This ensures an easy and safe start-up of the processing plant.

Silicone Tubing and Method for Making and Using Same

Silicone tube structures are formed having a particular dimensional accuracy. In one embodiment, a silicone tube structure can include an extruded hollow body having an inner bore. The extruded hollow body can have an inner diameter, an outer diameter, and a length of at least approximately 20 m. The extruded hollow body can also have a dimensional accuracy that is measured by the standard deviation of the inner diameter being no greater than approximately 0.8% of an average inner diameter of the extruded hollow body over the length. In an embodiment, the silicone tube structure can be cut to form a number of silicone tubes.

SYSTEM AND METHOD FOR EXTRUDING COMPOSITE FILAMENT

A method of extruding filament comprises the steps of cutting a bulk source material into pieces having size S, performing a first extrusion pass comprising the steps of melting the pieces in an extruding device at a temperature Tand extruding a first filament at an extrusion speed V, and performing at least one additional extrusion pass k comprising the steps of cutting the first filament into pieces having size S, melting the pieces in an extruding device at temperature T, and extruding a final filament at an extrusion speed V. A system for extruding filament is also described. 1. A method of extruding filament , comprising the steps of:{'sub': '1', 'producing pieces of source material having size S;'} [{'sub': '1', 'melting the first pieces in an extruding device at a temperature T; and'}, {'sub': '1', 'extruding a first filament from an extruding device having an extrusion screw, at an extrusion speed V; and'}], 'performing a first extrusion pass comprising the steps of [{'sub': 'k', 'cutting the first filament into second pieces having size S;'}, {'sub': 'k', 'melting the second pieces in an extruding device at temperature T; and'}, {'sub': 'k', 'extruding a final filament at an extrusion speed V.'}], 'performing at least one additional extrusion pass k comprising the steps ofwherein the matrix porosity of the final filament is less than the matrix porosity of the first filament.2. The method of claim 1 , wherein the bulk source material comprises polymer matrix syntactic foam.3. The method of claim 2 , wherein the bulk source material is HDPE.4. The method of claim 1 , further comprising the steps of:monitoring at least one temperature on the extruding device; andactivating at least one heater in order to maintain at least one temperature substantially constant.5. The method of claim 1 , wherein the first pieces of source material are produced by cutting a bulk source material.6. The method of claim 1 , wherein the first pieces of source material are produced ...

Methods for manufacturing bulked continuous filament

A method for manufacturing bulked continuous carpet filament, the method comprising: (1) reducing a chamber pressure within a chamber to below about 5 millibars; (2) after reducing the chamber pressure to below about 5 millibars, providing a polymer melt to the chamber; (3) separating the polymer melt into at least eight streams; (4) while the at least eight streams of the polymer melt are within the chamber, exposing the at least eight streams of the polymer melt to the chamber pressure of below about 5 millibars; (5) after exposing the at least eight streams of the polymer melt to the chamber pressure of below about 5 millibars, recombining the at least eight streams into a single polymer stream; and (6) forming polymer from the single polymer stream into bulked continuous carpet filament.

Device for making foam pipes and method for making foam pipes

A device for making foam pipes and a method for making the foam pipes includes the use of critical micro foaming injection molding. The foaming agent and the foaming material are mixed and controlled under specific temperature to obtain micro bubbles in the wall of the foam pipes which need less material when compared with PVC pipes of same specification such that manufacturing cost is reduced.

Systems and methods for manufacturing bulked continuous filament

A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 5 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.

System and method for polymer extrusion

Techniques are provided for polymer extrusion. A polyolefin extrusion system may include an extrusion gear pump configured to receive a narrow molecular weight distribution polyolefin from a polyolefin manufacturing system. The polyolefin extrusion system may also include a motor of the extrusion gear pump configured to drive the extrusion gear pump, a pressure sensor configured to generate a pressure signal indicative of a suction pressure into the extrusion gear pump, an automation controller configured to generate an output signal based on the pressure signal, and a variable speed drive configured to control operation of the motor.

Wet grain drying system and method

A device according to various embodiments for drying wet grain can include a first screw configured to receive wet grain. A second screw receives the wet grain from the first screw. At least one mechanism is included within at least one of the first screw and the second screw to vaporize water content in the wet grain.

High melt strength polypropylene and process of preparation thereof

A high melt strength resin composition includes at least a) non-functionalized polypropylene, b) at least one acrylate such as zinc diacrylate, calcium diacrylate or aluminum triacrylate in a total amount of from 0.1 to 5% by weight based on the weight of non-functionalized polypropylene, and c) at least one acid neutralizer in a total amount of from 0.005 to 5% by weight based on the total weight of the at least one acrylate. The resin composition is compounded at a processing temperature between 185° C. and 260° C. to obtain the high melt strength polypropylene.

Systems and methods for manufacturing bulked continuous filament

A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 5 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.

Screw machine and method for the processing of material to be processed

A screw machine includes an inductive heating device for processing of material to be processed. The inductive heating device is used to heat the material in a heating zone. In the heating zone, at least one housing portion is made of an electromagnetically transparent material at least partly, the material being non-magnetic and electrically non-conductive, whereas at least one treatment element shaft is made of an electrically conductive material at least partly. The inductive heating device includes at least one coil formed integrally with a component of the at least one housing portion, in particular in such a way as to form a hybrid component. During the processing of the material, the inductive heating device generates an alternating magnetic field that produces eddy current losses in the at least one treatment element shaft, the eddy current losses leading to a temperature increase of the at least one treatment element shaft.

MACHINE SYSTEM FOR PRODUCING OR TREATING SYNTHETIC THREADS

Techniques involve a machine system for producing or treating synthetic threads, comprising a plurality of machine components, having actuators and/or sensors, that are associated with a plurality of control components. The control components are connected by a machine network to a central machine control station. In order to remedy process disruptions as quickly as possible and to ensure uniform product quality, the control components are coupled in parallel to a central analysis station by an analysis network. 1. A machine system for producing or treating synthetic yarns , comprising a plurality of machine components having actuators and/or sensors , and comprising a plurality of control components which are associated with the machine components for controlling , wherein the control components are connected to a central machine control station via a machine network , wherein the control components are coupled in parallel to a central analysis station via an analysis network.2. The machine system as claimed in claim 1 , wherein the analysis network is formed by means of a real time-capable bus system for data transmission.3. The machine system as claimed in claim 1 , wherein the machine network is formed by means of an Industrial Ethernet for data transmission.4. The machine system as claimed in claim 1 , wherein the control components to have at least two network connections claim 1 , wherein one of the network connections is configured as a real-time network connection.5. The machine system as claimed in claim 1 , wherein the machine control station is connected to the analysis network via a separate real-time network connection.6. The machine system as claimed in claim 1 , wherein the central analysis station has an Internet interface claim 1 , and the central analysis station is connected to an external diagnosis station.7. The machine system as claimed in claim 1 , wherein the central analysis station and the central machine control station are interconnected ...

System and method for polymer extrusion

Techniques are provided for polymer extrusion. A polyolefin extrusion system may include an extrusion gear pump configured to receive a narrow molecular weight distribution polyolefin from a polyolefin manufacturing system. The polyolefin extrusion system may also include a motor of the extrusion gear pump configured to drive the extrusion gear pump, a pressure sensor configured to generate a pressure signal indicative of a suction pressure into the extrusion gear pump, an automation controller configured to generate an output signal based on the pressure signal, and a variable speed drive configured to control operation of the motor.

Low energy processing of thermoplastic polymers

In the operation of a melter/mixer-gear pump system for processing of synthetic thermoplastic materials, the improvement is disclosed which comprises employing the pressure between the melter/mixer and the gear pump as the controlling parameter which affects, in a proportional relationship, the speed of the gear pump, the energy transmitted to and the consequent temperature of the materials passing through said melter/mixer.

Screw machine with start valve and throttle

Process for producing a polyethylene-polypropylene multilayer blown film

The present invention relates to a process for producing a multilayer film comprising at least one polyethylene (except high pressure polyethylene) and polypropylene layer, wherein the adhesion between the polyethylene and polypropylene is enhanced without the use of any tie layer by processing the film with a freezing time of less than ten seconds.

Self-cleaning gravimetric and volumetric dosing apparatuses

A self-cleaning dosing apparatus includes a material hopper for containing pellets of material, a feed screw, a first material outlet through which pellets of material fall by gravity onto a first end of the feed screw for the feeding of pellets to a process machine. A second material outlet is located beneath the first end of the feed screw, with a slide gate blocking the second material outlet. A pneumatic piston is provided for pulling the slide gate to unblock the second material outlet, and a Venturi pump is located under the second material outlet for pulling pellets through the second material outlet when the slide gate is opened.

Shape-memory laminated polybutylene terephthalate film, production process and use thereof, and process for production of polybutylene terephthalate film

본 발명은, (1) 폴리부틸렌 테레프탈레이트 필름과 다른 필름 또는 필름 적층체를 접착하여 얻어진 적층 필름을, 제1 형상으로 유지시키면서, 상기 폴리부틸렌 테레프탈레이트의 유리 전이 온도 이하의 온도(T 1 )에서 부형 처리하고, (2) 얻어진 부형 적층 필름을, 상기 유리 전이 온도보다 높은 온도(T 2 )에서 제2 형상으로 변형 가공한 다음, (3) 상기 유리 전이 온도 이하의 온도(T 3 )으로 냉각시킴으로써 얻어지는, 우수한 형상 기억성과 내열 치수 안정성을 갖는 폴리부틸렌 테레프탈레이트 적층 필름에 관한 것이다. The present invention provides a temperature (T) below the glass transition temperature of the polybutylene terephthalate while (1) maintaining the laminated film obtained by adhering the polybutylene terephthalate film and another film or film laminate in a first shape. 1 ) the shaping treatment in (2), (2) the resulting laminated laminate film is deformed into a second shape at a temperature (T 2 ) higher than the glass transition temperature, and (3) a temperature below the glass transition temperature (T 3 The present invention relates to a polybutylene terephthalate laminated film having excellent shape memory and heat resistance dimensional stability obtained by cooling with). 폴리부틸렌 테레프탈레이트 필름, 적층, 유리 전이 온도, 형상 기억, 내열 치수 안정성 Polybutylene Terephthalate Film, Lamination, Glass Transition Temperature, Shape Memory, Heat Resistance Dimensional Stability

On-line rheometer device

A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer melt and the predetermined size of said orifice; means weighing at least a portion of said diverted melt stream discharged through said orifice, said weighing means including weight sensing means for measuring the weight of diverted melt stream and producing a resultant weight signal; and computer means responsive to the temperature, pressure and weight signals for determining process characteristics of the main polymer melt.

Method for controlling melt rheology of resin mixtures

A process including: introducing and continuously melt mixing in an extruder a mixture of a first resin feed and a second resin feed; measuring within the extruder the melt rheology of the resulting melt mixture of the first and second resins; determining the relative ratio of the first resin and a second resin from the melt rheology in the resulting melt mixture; and adjusting the relative feed ratio of the first resin and second resin feeds introduced to the extruder.

Extruder for deaeration

A method for regulating the working and the output of plastic material in extrusion moulding

Method for controlling the processing and output feeding of plastic melt by extrusion, by means of an extrusion plant comprising a process unit (1) for processing the plastic material, a pump (3) for feeding the plastic melt to a die (4) or similar, and a screen pack assembly positioned between the process unit (1) and the pump (3). In the process unit (1) the melt is imparted a constant level of kinetics of extrusion, and the plastic melt pressure (P2) between the screen pack assembly (2) and the pump (3) is kept above a predetermined level. As a measure of the level of kinetics of extrusion, the pressure (P1) of the melt between the process unit (1) and the screen pack assembly (2), is used, preferably in combination with the melt pressure (P2) after the screen pack assembly (2).

Process for manufacturing an adhesive by means of extrusion

The present invention relates to a process for manufacturing an adhesive by extrusion, wherein the adhesive comprises at least one degraded polypropylene (co)polymer and at least one additional additive.

Production of shaped, high polymeric articles

There is disclosed a method of and apparatus for use in the production of shaped, high polymeric articles, particularly yarns, in which natural, thermo-plastic high polymeric material and a coloring agent are mixed together and the delivery of the coloring agent for mixing is controlled in dependence upon the rate at which the mixture is processed.

Process to regulate the degree of molecular network formation in polyurethane pipe with an in-line measuring system

In an extrusion process to manufacture polyethylene plastic pipes for e.g. sub-floor heating systems, hot water pipes, drinking water pipes etc, the plastic molecules have a molecular network created by peroxide. The extrusion assembly has a peroxide dosing station, a UV or IR radiation emitter, an in-line measuring system (7) that determines the degree of network formation, and a pipe discharge station. The radiation emitter (6) and/or peroxide dosing station and/or the pipe (5) discharge speed are regulated in response to the values registered by the measuring station.

Gear pump control method and gear pump control device

Method of extruding and shaping thermoplastic material

A method of extruding and shaping thermoplastic material in which a constant amount of thermoplastic material is continuously fed from a screw extruder to a die by means of a metering pump. The extruder is arranged to continuously receive a constant amount of the thermoplastic material. The metering pump is adjusted to the correct rotational frequency to maintain the pressure of the molten thermoplastic material between the extruder and the metering pump within a predetermined range.

Method for regulating the working and the output of plastic material in extrusion moulding

Method for controlling the processing and output feeding of plastic melt by extrusion, by means of an extrusion plant including a process unit (1) for processing the plastic material, a pump (3) for feeding the plastic melt to a die (4) or the like, and a screen pack assembly positioned between the process unit (1) and the pump (3). In the process unit (1) the melt is imparted a constant level of kinetics of extrusion, and the plastic melt pressure (P2) between the screen pack assembly (2) and the pump (3) is kept above a predetermined level. As a measure of the level of kinetics of extrusion, the pressure (P1) of the melt between the process unit (1) and the screen pack assembly (2), is used, preferably in combination with the melt pressure (P2) after the screen pack assembly (2).

System and method for controlling continuous mixer with melt pump

An improved system and method for effectively controlling the operation of a continuous mixer/melter having an adjustable exit opening and connected to a melt pump is provided. The melt pump, which is preferably a gear pump, is operatively connected to an extruder/pelletizer. Operation of the gear pump is controlled in proportional relation to the energy requirements of the mixer/melter motor, the energy applied to adjust and maintain the exit opening of the mixer/melter, and the suction pressure measured at the interface between the mixer/melter and the gear pump. A microprocessor unit which receives and processes the input signals, calculates the energy requirements of the gear pump motor and compares these requirements with the actual torque, makes the necessary adjustments to the gear pump.

On-line rheological measurements for process control

On-line rheological measurements are made utilizing a rheometer of the type in which a first metering pump delivers diverted melt from a process main stream to a capillary passage and a second metering pump returns the diverted melt from the capillary passage to the process main stream and the viscosity of the diverted melt is measured by controlling the rate of flow of the melt through the capillary passage to maintain constant the pressure drop between spaced apart locations along the capillary passage and measuring the temperature of the melt in the capillary passage. The measurements may be made while controlling the speed of the second metering pump independent of the speed of the first metering pump to maintain the pressure at the exit of the capillary passage essentially constant. A parallel flow passage has an inlet placed between the first metering pump and the entrance to the capillary passage, in close juxtaposition with the entrance and an outlet placed between the exit from the capillary passage and the second metering pump, and a valve in the parallel flow passage is operated so that diverted melt selectively is passed through the parallel flow passage to attain a relatively quick response and relatively short residence time of the diverted melt in the rheometer.

Method for extruding tire rubber material

Tire rubber material is highly accurately and efficiently extruded by a positive displacement extruding system that includes, as seen from an upstream side of the tire rubber, a screw extruder unit, a gear pump unit and an extrusion head unit with an extrusion nozzle, which are connected in series with each other. While the tire rubber is caused to flow through the extruding system, the temperature of the rubber material is measured and controlled to be within a predetermined temperature range, in accordance with the measured temperature of the rubber material. The rubber material maintained at a controlled temperature is extruded from the extrusion nozzle, thereby improving the positive displacement performance of the extruding system.

Plastics extruder dimension and viscosity control system and method

An extrusion control system and method controls the cross section and viscosity in the process of extruding even hard to control plastics like polyurethane. Cross section, A, is determined by measuring volumetric rate of delivery of melt through a gear pump V/t and the speed of the extrudate at a puller N/t. The cross-sectional area, A = V / t N / t , is controlled by controlling the puller speed. Pressure drop across the die, P, and the volume of melt delivered by the gear pump are measured and a term indicative of the viscosity of the melt is determined based on Vs = KP V , Vs being the viscosity and K being a constant dependent on the size and shape of the die orifice. Viscosity variations are compensated by varying heat applied to the melt.

Method for producing profiles made of thermoplastic material

The invention relates to a method and the thus required devices for automated process and quality monitoring of an extrusion plant and an integrated closed-loop process control system for timely correction of process parameters as a result of fluctuations in the properties of the raw material or parameter fluctuations of the extrusion system in order to ensure an even quality of the produced profile.

Mixing Machine For Components

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.

Method for feeding the starting materials into a screw press for producing a film web

Process of producing thermoplastic resin sheet and equipment therefor

METHOD FOR OPERATING A SNAIL EXTRUDER AND SNAIL EXTRUDER FOR IMPLEMENTING THE METHOD

Verfahren und einrichtung zur anpassung eines extrusionswerkzeuges an einen extruder

Automatic regulation of extruders - using signal transmitters

An extruder system has feed and injection extruders, each with independent drive and back-pressure device. The turning moment and/or back pressure of the injector section is controlled by signals from moment and/or pressure transmitted to a regulator, in which the signals are compared with reference values, so that differences produce further signals to speed regulators via a tachometer/generator.

Method and ultrasonic apparatus for polymer extrusion

A method of extruding a unit of recycled polymer feedstock material comprising the steps of: providing the recycled polymer feedstock material; passing the feedstock material through an extrusion system (2b); applying ultrasonic energy (16) to the feedstock material passing through the extrusion system (2b); measuring one or more properties of the feedstock material and/or one or more processing conditions during the extrusion process; real time analysing the measurements of the one or more properties of the feedstock material and/or the one or more processing conditions during the extrusion process; and real time reviewing the application of ultrasonic energy (16) to control the one or more properties of the feedstock material based on the analysis of the feedstock properties or processing conditions during the extrusion process.

Process of producing thermoplastic resin sheet and equipment therefor

This invention relates to a process of producing a thermoplastic resin sheet and equipment therefore. The equipment includes a first extruder of a high kneading type, a second extruder of a low kneading type and an extrusion die. A film-shaped resin extruded from the extrusion die is cooled by a cooling device, to thereby obtain the resin sheet. Additionally, a difference between pressures at the outlets of the first and second extruders is detected, and, in response to this difference between the pressures thus detected, the operating conditions of the first extruder are automatically controlled.

Low energy processing of thermoplastic polymers

LOW ENERGY PROCESSING OF THERMOPLASTIC POLYMERS ABSTRACT OF THE INVENTION In the operation of a melter/mixer-gear pump system for processing of synthetic thermoplastic materials, the improvement is disclosed which comprises controlling the operating temperature of said materials passing therethrough by speed adjustment of said gear pump which affects, in a proportional relationship, the energy transmitted through said melter/mixer to said materials. S P E C I F I C A T I O N

Plastic worm extruder - automatic temperature and pressure control on material

The extruder worm has a torpedo head, and the extrusion chamber is lined with an adjustable sleeve which can be moved axially. External circuits monitor temperature and pressure of the material and regulate the position of the sleeve and the revolutions of the worm.

Control method of gear pump for extrusion equipment

Extrusion apparatus

Device for holding uniform discharge volume in injection molding machine

Устройство автоматического регулировани давлени расплава в экструдере

Изобретение относитс  к переработке пластмасс и может примен тьс  в технологических процессах, использующих экструзию полимеров. Целью изобретени   вл етс  повышение качества изделий за счет повьшени  точности регулировани  давлени  расплава . В устройство регулировани  давлени  расплава на выходе из экструдера. которьй снабжен фильтром расплава а, дополнительно введен блок эталонной модели экструдера, причем параметры модели в процессе работы экструдера остаютс  посто нными (коэффициент передачи по тракту скорость шнека - . давление расплава). В реальном экст- рудере этот параметр измен етс , что не позвол ет сохран ть одинаковой точность регулировани  давлени  во всем диапазоне изменени  скорости шнека. Путем сравнени  с эталонной моделью вырабатьшаетс  сигнал коррекции , с помощью которого стабилизируетс  точность работы регул тора давлени  на высоком уровне во всем диапазоне работ1(1 экструдера по скорости шнека. Предлагаемое устройство- позвол ет повысить качество экструдируе- мых изделий за счет повышени  точности регулировани  давлени  расплава в экструдере, котора  обеспечиваетс  инвариантностью коэффициента передачи экструдера по каналу скорость вращени  шнека - давление расплава в экст РУДере. 1 з.п. ф-лы, 1 ил. с 9 сл со а X X) ч

Apparatus for varying pressure within a screw channel

An improved apparatus for varying the pressure within a screw channel which apparatus includes a shaft having a helical flight (9) defining a channel (14) between consecutive turns of the flight. The screw (7) is rotatable within a barrel. A radially movable first member (31) is disposed at a right angle to a longitudinal axis of the screw (7) where the plasticated material has undergone partial melting. A reciprocatively movable second member (32) is disposed within a bore through the shaft coaxial with the axis and includes a cam slidably engaged with an inner end of the first member such that the first member (31) can be extended into the screw channel when the second member (32) is moved in one direction and retracted from the channel when the second member is moved in another direction.

樹脂押出装置

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

制造聚乙烯-聚丙烯多层吹塑膜的方法

本发明涉及制造包括至少一个聚乙烯(除高压聚乙烯以外)层和至少一个聚丙烯层的多层膜的方法，其中，通过以低于10秒的冷固时间对所述膜进行处理来提高所述聚乙烯和聚丙烯之间的粘着力，且无需使用任何粘结层。

Method for making extruded, oriented fiber

The present invention includes processes for making fibers, which processes include an extrusion step wherein molten polymers are extruded through an extrusion die, thereby forming at least one extruded filament; and an orientation step, wherein the filament is drawn to align the molecules of the filament, and wherein multivariate data analysis techniques are used to analyze data regarding various process variables and, optionally, process variables are adjusted in response to the multivariate data analysis.

Apparatus for and method of making inflation films

An apparatus for making an inflation film formed by extruding a raw resin in a molten state through a circular die to form a tubular film, and expanding the tubular film by the pressure of a gaseous medium introduced into an inner space thereof, while the tubular film is being cooled. The apparatus includes a cooling ring, at least one air ring coaxial with the circular die, and an adjusting device for adjusting the temperature of a gaseous medium, blown from the air ring, to a range effective to retain the tubular film, then still in a molten phase, in a condition in which the tubular film is inflated. A method for making an inflation film is also disclosed.

Plastic processing method and apparatus

Apparatus for and method of making inflation films

An apparatus for making an inflation film formed by extruding a raw resin in a molten state through a circular die to form a tubular film, and expanding the tubular film by the pressure of a gaseous medium introduced into an inner space thereof, while the tubular film is being cooled. The apparatus includes a cooling ring, at least one air ring coaxial with the circular die, and an adjusting device for adjusting the temperature of a gaseous medium, blown from the air ring, to a range effective to retain the tubular film, then still in a molten phase, in a condition in which the tubular film is inflated. A method for making an inflation film is also disclosed.

Precision polyurethane manufacture

Injection molding of polymeric material

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.

Process and apparatus for producing crystalline resin film or sheet

The present invention is a process and apparatus for manufacturing a crystalline resin film or sheet. This manufacturing apparatus includes: an extruder (10) that melts crystalline resin while supplying it; a gear pump (20) that is provided on the downstream side of the extruder (10); a die (30) which is provided on the downstream side of the gear pump (20), and which has a slit-shaped aperture; a cooling apparatus (40) which cools film-shaped or sheet-shaped crystalline resin (A) discharged in a melted state from the die (30) to a temperature which is not less than the crystallization temperature but not more than the melting point; and a pair of pinch rolls (50a, 50b) that press-roll between them the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus (40), wherein the pair of guide rolls (50a, 50b) are positioned such that the thickness of the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus (40) is between 1.3 and 8.0 times the thickness of the film or sheet (C, D) after it has been press-rolled.

Process and apparatus for producing crystalline resin film or sheet

Process and apparatus for producing crystalline resin film or sheet

A process and apparatus for manufacturing a crystalline resin film or sheet. This manufacturing apparatus includes: an extruder that melts crystalline resin while supplying it; a gear pump that is provided on the downstream side of the extruder; a die which is provided on the downstream side of the gear pump, and which has a slit-shaped aperture; a cooling apparatus which cools film-shaped or sheet-shaped crystalline resin (A) discharged in a melted state from the die to a temperature which is not less than the crystallization temperature but not more than the melting point; and a pair of pinch rolls that press-roll between them the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus ( 40 ), wherein the pair of guide rolls are positioned such that the thickness of the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus is between 1.3 and 8.0 times the thickness of the film or sheet (C, D) after it has been press-rolled.

Single-screw degassing extruder for thermoplastic materials and rubber

Process for manufacturing an adhesive by means of extrusion

The present invention relates to a process for manufacturing an adhesive by extrusion, wherein the adhesive comprises at least one degraded polypropylene(co)polymer and at least one additional additive.

Scaleless on-line rheometer device

A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer melt and the predetermined size of said orifice; means measuring or calculating the production rate of the extruder; and manufacturing control system means responsive to the temperature, pressure and production rate signals for determining process characteristics of the main polymer melt.

Rubber composition kneading apparatus and kneading method

On-line rheometer

Kneading apparatus and method for kneading rubber-based composition using the same

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.

Process of producing thermoplastic resin sheet and equipment therefor

This invention relates to a process of producing a thermoplastic resin sheet and the like and a an equipment. The equipment includes a first extruder (3) of a high kneading type, a second extruder (5) of a low kneading type and an extrusion die (30). A film-shaped resin extruded from the extrusion die (30) is cooled by a cooling device (20), to thereby obtain the resin sheet (38) and the like. Furthermore, a difference between pressures at the outlets of the first and second extruders is detected, and, in response to this difference between the pressures thus detected, the operating conditions of the first extruder are automatically controlled.

Low energy processing of thermoplastic polymers

In the operation of a meltermixer-gear pump system for processing synthetic thermoplastic materials, an improvement is disclosed which comprises controlling the operating temperature of the materials passing therethrough by speed adjustment of the gear pump (29) which affects, in a proportional relationship, the energy transmitted through the melterimixer (10) to the materials.

Controlling method of extrusion amount

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method of storing liquid in tank

Использование: способы выдержки жидкостей в технологических емкостях. Сущность изобретения: способ хранения жидкости в баке, в котором бак имеет входное и выходное отверстия и подвижный ведомый элемент с одним из отверстий, причем жидкость одновременно и непрерывно поступает и уходит из бака, и объем жидкости в баке изменяется с перемещением ведомого элемента в ответ на изменения скоростей поступления и удаления жидкости. 12 з. п. ф-лы, 2 ил. $16 0с ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК (13) ВИ” 2 097 313 Вб7 О 5/34 СЛ 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 95104878/13, 20.07.1993 (30) Приоритет: 22.07.1992 СВ 9215570.4 (46) Дата публикации: 27.11.1997 (56) Ссылки: 1. СВ, патент М 841403, кл. 69/2 АЛ, 1960. 2. ОЕ, патент М 3416899, кл. А 23 С 3/28, 1988. (86) Заявка РСТ: СВ 93/01524 (20.07.93) (71) Заявитель: Кортолдс ПЛС (СВ) (73) Патентообладатель: Кортолдс ПЛС (СВ) (72) Изобретатель: Майкл Роберт Перри[СВ] (54) СПОСОБ ХРАНЕНИЯ ЖИДКОСТИ В БАКЕ (57) Реферат: Использование: способы элемент с одним из отверстий, ЖИДКОСТЬ одновременно и ф-лы, 2 ил. выдержки жидкостей в технологических емкостях. Сущность изобретения: способ хранения жидкости в баке, в котором бак имеет входное и выходное отверстия и подвижный ведомый причем непрерывно поступает и уходит из бака, и объем жидкости в баке изменяется с перемещением ведомого элемента в ответ на изменения скоростей поступления и удаления жидкости. 12 3. п. АЗ ызьчьчь Чычечь ль й В И САИ д р |[`——. Г оды И [о 1244 05 К р ина й Е > м Ск 124 1 7юв 125 2097313 С1 КО $16 0с ПЧ ГЭ КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ ЗВ ‘” 2 097 313 Сл (51) 1пЕ. С1.6 12) АВЗТКАСТ ОЕ 1МУЕМТОМ В 670 5/34 (21), (22) АррИсаНоп: 95104878/13, 20.07.1993 (30) Рношу: 22.07.1992 СВ 9215570.4 (46) Бае ог ричбИсаНоп: 27.11.1997 (86) РСТ аррИсанНоп: СВ 9301524 (20.07.93) (71) АррИсапе: КоПо!4$ РЕЗ (СВ) (72) |пуетог: Мак КоБет Рег[СВ] (73) Ргорпеюг: КоЦпо!а$ РЕЗ (СВ) (54) МЕТНОО ОЕ ЗТОЮМС ...

Apparatus and method for producing blown film

本发明公开了一种吹塑薄膜的生产设备，所述吹塑薄膜是经圆口模头挤出熔化状的原料树脂以形成管形薄膜，并通过引入管形薄膜内空间的气体介质压力而使所述管形薄膜膨胀，同时将管形薄膜冷却形成的。所述设备包括：一个设置在圆口模头附近的冷却环；至少一个与圆口模头同轴设置的风环；以及一个调节装置，用于将由风环吹出的气体介质的温度调节至有效地保持仍处于熔化状态的管形薄膜，使其处于被吹塑的状态。本发明还公开了一种吹塑薄膜的生产方法。

Ejection head of molding material for 3d modeling apparatus

To facilitate a size reduction, a weight reduction, an energy reduction, and a service life extension as well as improvement in degree of freedom in selecting a deposition material by making a high-temperature operation possible. Therefore, a printhead in which a supplying portion (10) comprising a supplying opening (11) of a filament; a melting portion (30) to melt a filament supplied; a discharging portion (40) comprising a discharging opening (41) to discharge the melted filament; and a heat insulating portion (20) between the supplying portion (10) and the melting portion (30) are integrally formed can be provided to effectively suppress heat in the melting portion conducting to the supplying portion even when the melting portion is heated to high temperature, to maintain the temperature of the supplying portion to an appropriate temperature, and to efficiently utilize heat by the melting portion as a result of heating the melting portion.

Throughput measurement and control involving a batch dosing device

Vorrichtung zur Messung und Regelung des Durchsatzes einer kontinuierlich arbeitenden Dosiereinheit, wobei auf dem Einzug der kontinuierlich arbeitenden Dosiereinheit (4) ein zwischen seiner Einlass- und Auslassöffnung geschlossener Messtrichter (3) vorgesehen ist, der über seine Einlassöffnung von oben von einem Chargendosierer zyklisch mit Chargen bekannten Gewichts befüllbar ist und in dessen Zulauf eine Niveausonde (9) angeordnet ist und der in Form eines Zylinders, Doppelkegels, Quaders, Doppelpyramide oder einer Kombination aus den geometrischen Formen, Zylinder, Kegel, Quader oder Pyramide gestaltet ist, dadurch gekennzeichnet, dass sich die obere Trichterhälfte des Messtrichters (3) nach oben hin verjüngt.

Tank Operation in Regenerated Cellulose Manufacturing Process

이 발명은 탱크(101)내에 액체를 저장하는 방법에 관한 것으로서, 탱크는 유입구와 배출구(117,127) 및 출입구(117)를 갖고 있는 가동성 구동체(111)를 갖고 있으며, 액체는 단속적 및 연속적으로 탱크내로 주입 및 배출되며 탱크 내의 액체 용량은 구동체(11)가 공급 및 수요 속도의 변동치에 감응하여 이동하는데 따라 변경됨. The present invention relates to a method for storing liquid in a tank (101), wherein the tank has a movable drive (111) having an inlet and an outlet (117, 127) and an outlet (117), the liquid being intermittently and continuously in the tank. The volume of liquid in the tank changes as the drive 11 moves in response to changes in supply and demand rates.

Process and apparatus for producing crystalline resin film or sheet

本发明提供一种结晶性树脂膜或片材的制造方法及制造装置。所述制造装置具有：挤出机(10)，一边将结晶性树脂熔融一边进行供给；齿轮泵(20)，设置在所述挤出机(10)下游侧；模(30)，设置在所述齿轮泵(20)下游侧，具有狭缝状开口部；冷却机构(40)，将从所述模(30)排出的熔融状态的膜状或片状结晶性树脂(A)冷却至结晶温度以上、熔点以下；及一对夹持辊(50a、50b)，夹持通过了上述冷却机构(40)的膜状或片状结晶性树脂(B)并对其进行压延。配置上述一对夹持辊(50a、50b)，使通过冷却机构(40)的膜状或片状结晶性树脂(B)的厚度为压延后的膜或片材(C、D)的厚度的1.3～8.0倍。

A antibiotic high impact triple-layered water pipe

본 발명은 동일한 성질을 갖는 염화비닐수지를 주성분으로 한 외부 및 내부 내충격경질층과, 상기 내부 및 외부 내충격경질층보다 경질의 염화비닐수지를 주성분으로 한 중심 고인장경질층으로 이루어진 삼중벽 구조의 수도관에 있어서, 상기 외부 및 내부 내충격경질층에 제올라이트 무기항균제를 포함하는 수지 조성물을 적용함으로서, 미생물의 서식을 방지하는 항균효과와 함께 삼중벽의 구조적 특징으로 인한 우수한 인장강도와 저온충격강도를 얻을 수 있을 뿐만 아니라, 중심 고인장경질층과 외부 및 내부 내충격경질층 간의 접착력을 향상시켜 충격강도가 낮아지는 것을 방지할 수 있으며, 작업공정상 각 성분들의 배합과정 또한 고온에서 고점도 상태에서 이루어질 수 있어 각 성분들의 균일한 혼합이 가능하고 작업성을 향상시킬 수 있고, 항균효과를 지속적으로 유지시킬 수 있다는 것이다. 외부 내충격경질층, 내부 내충격경질층, 중심 고인장경질층, 염화비닐수지, 제올라이트계 무기항균제, 열안정제, 대전방지제

Spray head for molding material for three-dimensional molding apparatus

本发明实现小型化、轻量化、节能化、长寿命化，并且实现通过可以在高温下运行而提高造型材料的选择自由度。因此，通过制成具有丝线的供给口(11)的供给部(10)、使供给的丝线熔化的熔化部(30)、具有喷吐被熔化的丝线的喷吐口(41)的喷吐部(40)、以及处于供给部(10)与熔化部(30)之间的隔热部(20)一体地成型而成的喷头，即使将熔化部加热至高温，也能够有效地抑制熔化部的热传导至供给部，能够将供给部的温度保持为适当的温度，能够将加热而得到的热高效地用于熔化部。

Control method of gear pump

【課題】ギヤポンプの空転を検知して、ギヤポンプを安定して稼働する。【解決手段】本発明のギアポンプ１の制御方法は、混練設備２の下流側に設けられて、混練設備２で混練された材料を下流側に送るギアポンプ１に対して、ギアポンプ１の回転数を制御するに際しては、ギアポンプ１が空転しているかどうかを判断し、判断の結果に応じてギアポンプ１の回転数を変更することを特徴とする。好ましくは、ギアポンプ１の入側の圧力Pinを計測しておき、計測されたギアポンプ１入側の圧力Pinが目標の圧力設定値P0よりも高くなった場合に、ギアポンプ１が空転しているかどうかを判断するとよい。【選択図】図１

Method and device for processing of polymers

FIELD: process engineering. SUBSTANCE: invention relates to extrusion of plastics containing the additives, particularly, to the feed of liquid additive. In compliance with claimed process, liquid additive containing the dye is fed during the extrusion of plastic. This process comprises the generation of elements connection circuit in the control circuit exploiting the feedback process for actuation of at least one pump. Note here that said feedback process comprises outputting of at least one signal from the transducer connected with the machine to the controller. At least one signal is output from the controller to at least one pump. The pressure in at least one pump is monitored while injection nozzle valve position is defined with the help of the transducer. One or more signals are output to the injection nozzle valve to make it open or close. EFFECT: continuous proportioned addition of additive in fusion of plastics at higher efficiency. 15 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК B29C 47/10 (13) 2 572 964 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013103031/05, 05.07.2011 (24) Дата начала отсчета срока действия патента: 05.07.2011 (72) Автор(ы): СИ Майкл Д. (US) (73) Патентообладатель(и): КОЛОРМАТРИКС ХОЛДИНГС, ИНК. (US) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 20.08.2014 Бюл. № 23 R U 08.07.2010 US 61/362,410 (45) Опубликовано: 20.01.2016 Бюл. № 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 08.02.2013 2 5 7 2 9 6 4 (56) Список документов, цитированных в отчете о поиске: US 2004206246 А1, 21.10.2004. US 2004206246 А1, 21.10.2004. US 2005154155 А1, 14.07.2005. WO 2005102665 A2, 03.11.2005. US 2004262813 A1, 30.12.2004. RU 2178738 C1, 27.01.2002. IB 2011/001599 (05.07.2011) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: R U 2 5 7 2 9 6 4 WO 2012/004661 (12.01.2012) Адрес для переписки: 197101, Санкт-Петербург, а/я 128, ...

Extrusion method for removing volatile contents from solid state resin materials and apparatus therefor

제1 및 제2 압출기를 갖는 캐스케이드형 압출장치가 제공되고, 상기 제1 압출기(10)의 상단부는 상기 제2 압출기(100) 의 실린더의 후방측부에 직접 결합되어 있고 고체상태 수지재료가 제1 압출기에 공급될때 발생되는 용융된 수지의 휘발성분은 제1 및 제2 압출기의 결합부의 상류측에 제공된 휘발성분제거 진공장치에서 제거된 다음 상기 제2 압출기의 상단부에 제공된 노즐로부터 용융된 수지가 압출되는 고체상태 수지재료로부터 휘발성분을 제거하는 압출방법. 휘발성분제거 장치(140) 의 휘발성분제거 진공영역은 제1 압출기의 제어하에 있는 제1 영역과 제2 압출기의 제어하에 있는 제2 영역 걸쳐 연장되도록 설정된다. 제1 영역에서의 상기 용융된 수지의 압력과 온도는 조절된다. A cascaded extruder having a first and a second extruder is provided, the upper end of the first extruder 10 is directly coupled to the rear side of the cylinder of the second extruder 100 and the solid resin material is first Volatile content of the molten resin generated when fed to the extruder is removed in a volatile removal vacuum apparatus provided upstream of the joint portion of the first and second extruders, and then the molten resin is extruded from a nozzle provided at the upper end of the second extruder. Extrusion method for removing volatiles from the solid resin material. The volatile removal vacuum region of the volatile removal device 140 is set to extend over a first region under the control of the first extruder and a second region under the control of the second extruder. The pressure and temperature of the molten resin in the first region are adjusted.

A kind of prilling of amino film plastics granule

一种氨基模塑料颗粒的造粒工艺包括以下步骤：a.挤压，将氨基模塑料通过进料阀送入到螺杆挤出机内，由螺杆挤出机加热挤压成块状并输送到轧辊机内；b.冷却，轧辊机将块状的氨基模塑料轧成片状后输送到网带，再进入到冷却设备进行冷却；c.粉碎，冷却后的氨基模塑料从出料阀输出进入到破碎机粉碎成粒；d.包装，粉碎后的颗粒经过分筛机分筛后分批包装。采用本发明所制作的氨基模塑料颗粒物理性能稳定，化学挥发物少，流动性稳定，可保持12-24个月左右，不易破碎。

Apparatus for feeding polymeric material in flake form to an extruder

Apparatus for feeding flake polymeric material to an extruder includes a storage container with an exit throat feeding a crammer device. The material is at all times subjected to mechanical action by vibrating the throat and at least the part of the storage container immediately adjacent the throat and agitating it in a skirt between the throat and the crammer. The crammer comprises a conical screw member with an annular passage of uniform radial dimension. The crammer motor is controlled in speed in accordance with a measurement of polymer pressure within the extruder, preferably at the transition portion of the extruder screw.

Method of putting multipunch profiling press into operation

A method of reducing wastage during the start-up phase of an extrusion device used to produce extruded profiles such as tread strips for vehicle tires from a plurality of mixtures is disclosed. The extrusion device comprises a plurality of extruders each extruding a component of the profile and each extruder has its own drive means. The outlets from the extruders communicate with a template member having flow channels formed therein which lead into a common extrusion port. The drive means are actuated simultaneously and the pressure of each of the components is monitored in the outlet region of each extruder. These pressures are compared with a pre-determined desired pressure by a control device, which device switches-off the appropriate drive means as each desired pressure is attained. When all desired pressures have been attained, all of the drive means are re-actuated simultaneously by the control device. In a minor modification of the method, the drive means for the final extruder to reach its desired pressure is not switched-off and the other drive means are simultaneously re-actuated when the final desired pressure is attained.

Method and plant for degasing polymer melts

The devolatilization method involves supplying polymer melt to an extruder (2) operated at a first speed of shafts so volatile components escape from the polymer melt via devolatilization ports (26,27) making polymer melt more viscous. The more viscous melt is supplied to a devolatilization unit (48) with perforated plate (54) and a clearance (55). The discharged melt from devolatilization unit is supplied to other extruder (4) operated at a speed of shafts (40,41) lower than first speed so other volatile components escape from the polymer melt via the other devolatilization ports. An independent claim is also included for a processing installation for devolatilization of polymer melts.

Degassing extruder

Method of feeding materials to extruder for making polymer film

High-melt strength polypropylene and its manufacturing process

고-용융강도 수지 조성물은 적어도 a) 비-관능화 폴리프로필렌, b) 비-관능화 폴리프로필렌의 중량을 기준으로 총량이 0.1 내지 5 중량%인, 아연 다이아크릴레이트, 칼슘 다이아크릴레이트 또는 알루미늄 트라이아크릴레이트와 같은 적어도 1 종의 아크릴레이트, 및 c) 적어도 1 종의 아크릴레이트의 총 중량을 기준으로 총량이 0.005 내지 5 중량%인, 적어도 1 종의 산 중화제를 포함한다. 수지 조성물이 185℃ 내지 260℃ 사이의 공정 온도에서 컴파운딩되어 고-용융강도 수지 조성물이 수득된다.

Kneading extruder

Device that changes the pressure in the screw groove

Process for manufacturing an adhesive by means of extrusion

본 발명은 압출에 의해 접착제를 제조하는 방법에 관한 것으로, 접착제는 적어도 하나의 분해된 폴리프로필렌 (코)폴리머 및 적어도 하나의 부가적 첨가제를 포함한다. The present invention relates to a method of producing an adhesive by extrusion, wherein the adhesive comprises at least one degraded polypropylene (co) polymer and at least one additional additive.

Embedding and encapsulation of controlled release particles

Controlled release, discrete, solid particles which contain an encapsulated and/or embedded component such as a heat sensitive or readily oxidizable pharmaceutically, biologically, or nutritionally active component are continuously produced without substantial destruction of the matrix material or encapsulant. A release-rate controlling component is incorporated into the matrix to control the rate of release of the encapsulant from the particles. The additional component may be a hydrophobic component or a high water binding capacity component for extending the release time. The plasticizable matrix material, such as starch, is admixed with at least one plasticizer, such as water, and at least one release-rate controlling component under low shear mixing conditions to plasticize the plasticizable material without substantially destroying the at least one plasticizable material and to obtain a substantially homogeneous plasticized mass. The plasticizer content is substantially reduced and the temperature of the plasticized mass is substantially reduced prior to admixing the plasticized mass with the encapsulant to avoid substantial destruction of the encapsulant and to obtain a formable, extrudable mixture. The mixture is extruded though a die without substantial or essentially no expansion and cut into discrete, relatively dense particles. Release properties may also be controlled by precoating the encapsulant and/or coating the extruded particles with a film-forming component.

Extrusion conveying device

본 발명은 고무 혼합물 또는 TPE인 구성요소를 혼합하기 위한 압출기(extruder, 12)를 포함하고, 상기 압출기의 출력 측부 상에 배열되고 특히 기어 펌프인 용적 측정으로 작동 이송기(codveyor)를 포함한 압출 이송 장치에 관한 것이다. 하나 이상의 구성요소는 체적 용적의 보조 이송기(volumetric subsidiary conveyor)의 보조와 함께 상기 압출기(extruder)로 공급될 수 있고, 하나 이상의 구성요소는 표지 물질(marker substance, 29)을 포함한다. 표지 물질(29)을 감지하기 위한 감지 장치는 출력측 이송기(14) 및/또는 압출기(extruder, 12)의 출력 측부 상에 장착되고, 상기 표지 물질의 감지된 분포 특성에 반응하여 출력측 이송기(output-sided conveyor, 14) 및/또는 압출기(12)의 회전 속도를 조절하는 제어 장치(40)에 커플 결합된다. The invention comprises an extruder 12 for mixing a component which is a rubber mixture or TPE, and is arranged on the output side of the extruder and in particular is an extrusion conveyer comprising a working codveyor in volumetric measurement, which is a gear pump. Relates to a device. One or more components may be supplied to the extruder with the aid of a volumetric subsidiary conveyor, and the one or more components include a marker substance 29. A sensing device for sensing the labeling substance 29 is mounted on the output side of the output side conveyer 14 and / or the extruder 12 and in response to the detected distribution characteristic of the labeling substance coupled to a control device 40 that regulates the rotational speed of the output-sided conveyor 14 and / or the extruder 12.

Method of measuring resin quantity for extrusion molding machine

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Mixing appts. and mixing method of rubber series compsn. using such mixing appts.

本发明是一种可从混炼对象物中高效地除热的混炼装置，包括：具有筒状空腔部的缸筒；通过在腔体内旋转将混炼对象物沿轴向挤压的螺旋组，螺旋组具有对混炼对象物施加剪切力的混炼翼部；从混炼对象投入口向腔体内以大致一定的体积速度或重量速度投入混炼对象物的定量供料机；向腔体内注入除热媒体的除热媒体注入机构；以及把在腔体内与混炼对象物混合的除热媒体从该混炼对象物中分离、并排出到腔体外的除热媒体排出机构。其中，如果混炼对象是橡胶组成物，除热媒体是水，可不产生高温状态地对橡胶组成物进行混炼处理使粘度降低到所需的值。对于高粘性的橡胶系组成物，不必反复进行レミル，可进行连续混炼处理，极大的提高生成效率。

Device for measuring degree of mixing in plastics

Method of manufacturing profiles from thermoplastic material

本发明涉及一种用于挤出设备的全自动过程和质量控制以及用于及时地修正由于原料性能的变化或挤出系统的参数变化而引起的工艺参数的波动、以确保生产出的型材质量均匀的完全闭合过程控制系统的方法及其所需设备。

diverter

Anfahrventil für eine Granuliervorrichtung mit einem ersten Schmelzeerzeugeranschluss (3), einem zweiten Schmelzeerzeugeranschluss (4), einem ersten Granulatoranschluss (5), einem zweiten Granulatoranschluss (6), sowie einem ersten Schmelzekanal (7) und einem zweiten Schmelzekanal (8) zur Verbindung der Schmelzeerzeugeranschlüsse (3, 4) mit den Granulatoranschlüssen (5, 6), wobei der erste Schmelzeerzeugeranschluss (3) mit dem ersten Granulatoranschluss (5) durch den ersten Schmelzekanal (7) verbindbar ist, und der zweite Schmelzeerzeugeranschluss (4) mit dem zweiten Granulatoranschluss (6) durch den zweiten Schmelzekanal (8) verbindbar ist, und ein gemeinsamer Ventilkorpus (15) vorgesehen ist, der in einer Produktionsstellung den ersten Schmelzeerzeugeranschluss (3) mit dem ersten Granulatoranschluss (5) verbindet und/oder den zweiten Schmelzeerzeugeranschluss (4) mit dem zweiten Granulatoranschluss (6) verbindet, und in einer Anfahrstellung den ersten Granulatoranschluss (5) von dem ersten Schmelzeerzeugeranschluss (3) absperrt und/oder den zweiten Granulatoranschluss (6) von dem zweiten Schmelzeerzeugeranschluss (4) absperrt sowie den ersten und/oder den zweiten Schmelzeerzeugeranschluss (3, 4) mit einer Bypassöffnung verbindet. Start-up valve for a granulating device having a first melt generator connection (3), a second melt generator connection (4), a first granulator connection (5), a second granulator connection (6), and a first melt channel (7) and a second melt channel (8) for connecting the Melt generator connections (3, 4) with the granulator connections (5, 6), in which the first melt generator connection (3) can be connected to the first granulator connection (5) through the first melt channel (7), and the second melt generator connection (4) can be connected to the second granulator connection (6) through the second melt channel (8), and a common valve body (15) is provided which in a production position connects the first melt generator connection (3 ...

METHOD FOR OPERATING A SCREW EXTRUDER AND SCREW EXTRUDER USING THIS METHOD OF VARIABLE ROTATION SPEED.

A)PROCEDE POUR FAIRE FONCTIONNER UNE EXTRUDEUSE A VIS ET EXTRUDEUSE A VIS METTANT EN OEUVRE CE PROCEDE A VITESSE DE ROTATION VARIABLE, B)PROCEDE CARACTERISE EN CE QUE L'ON REGLE LA VITESSE DE ROTATION EN FONCTION DE L'ENERGIE SPECIFIQUE ENGAGEE, EN MAINTENANT CETTE ENERGIE PRATIQUEMENT CONSTANTE, ET QUE L'EXTRUDEUSE POUR LA MISE EN OEUVRE DU PROCEDE EST CARACTERISEE PAR UNE INSTALLATION22 POUR MESURER LA PUISSANCE MOTRICE (N) DU MOTEUR6, L'ENTREE DE L'INSTALLATION DE REGLAGE18 RECEVANT UN SIGNAL CORRESPONDANT AU QUOTIENT DE LA PUISSANCE D'ENTRAINEMENT (N) PAR LE DEBIT (G) COMME GRANDEUR REELLE (S) ET LA SORTIE DE L'INSTALLATION DE REGLAGE18 EST RELIEE AU MOTEUR D'ENTRAINEMENT6 POUR MAINTENIR CONSTANTE L'ENERGIE SPECIFIQUE INTRODUITE. A) PROCESS FOR OPERATING A SCREW EXTRUDER AND SCREW EXTRUDER IMPLEMENTING THIS VARIABLE SPEED OF ROTATION PROCESS, B) PROCESS CHARACTERIZED IN THAT THE ROTATION SPEED IS ADJUSTED AS A FUNCTION OF THE SPECIFIC ENERGY ENGAGED, IN NOW THIS ENERGY PRACTICALLY CONSTANT, AND THAT THE EXTRUDER FOR THE IMPLEMENTATION OF THE PROCESS IS CHARACTERIZED BY AN INSTALLATION22 TO MEASURE THE MOTOR POWER (N) OF THE MOTOR6, THE ENTRY OF THE ADJUSTING INSTALLATION18 RECEIVING A SIGNAL FROM THE CORRESPONDENT THE DRIVE POWER (N) BY THE FLOW (G) AS ACTUAL QUANTITY (S) AND THE OUTPUT OF THE CONTROL SYSTEM18 IS CONNECTED TO THE DRIVE MOTOR6 TO MAINTAIN THE SPECIFIC ENERGY INTRODUCED CONSTANTLY.

METHOD OF ASSESSING THE PERFORMANCE OF A HOMOGENEIZER PLACED IN AN EXTRUSION LINE