A screen wheel filter device is provided for the high-pressure filtration of a plastic melt. At least one spacing element is arranged between an inlet plate and an outlet plate and a bearing ring on which a screen wheel arranged between the inlet plate and the outlet plate, is rotatably mounted. A tensioning bolt is guided through the bearing ring and via which the inlet plate together with the outlet plate, including the bearing ring inserted therebetween, is braced. The screen wheel has a plurality of screen segments which can each be positioned between the inlet channel and the outlet channel and through each of which a flow can pass. A throughflow region is formed between the opening in the inlet channel and the opening in the outlet channel facing toward the screen wheel in each case.
A screen wheel filter device for a high-pressure filtration of a plastic melt. An inlet plate and an outlet plate are formed in a housing. At least one spacing element is arranged between the inlet plate and the outlet plate and a bearing ring on which a screen wheel is arranged between the inlet plate and the outlet place and is rotatably mounted. The screen wheel has a plurality of screen segments positioned between the inlet channel and the outlet channel. The inlet channel and the outlet channel each have a funnel opening expanding toward the screen wheel. At least one pressure relief bore is arranged in the inlet plate or in the outlet plate and opens at a bearing ring, and the pressure relief bore is fluidically connected to a relief opening in an outside of the housing via a pressure relief channel formed in the housing.
B01D 33/15 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à surfaces filtrantes rotatives planes
B01D 33/50 - Rinçage par chasse, p. ex. rafale ascendante d'air à contre-courant avec des bras, des collecteurs de lavage ou des ajutages à contre-courant
B29B 13/10 - Conditionnement ou traitement physique de la matière à façonner par broyage, p. ex. par triturationConditionnement ou traitement physique de la matière à façonner par tamisageConditionnement ou traitement physique de la matière à façonner par filtration
3.
FILTER DEVICE FOR PVC PLASTIC MELT FOR CONNECTION TO A TWIN SCREW EXTRUDER AND TWIN SCREW EXTRUDER FOR PVC PROCESSING
A filter device for PVC plastic melt, for connection to a twin screw extruder. A housing has at least an inlet block with at least one inlet channel, and an outlet block with at least one outlet channel. At least one spacer element is arranged between the inlet block and the outlet block. A screen wheel is rotatably mounted in the housing. A plurality of screen points are each positioned between the inlet channel and the outlet channel and in each of which at least one screen element through which plastic melt can flow can be inserted. A drive device rotates the screen wheel in the housing. The inlet channel is formed in an inlet melt pocket in the inlet block, which has a twin extruder screw receptacle for two screw tips of two extruder screws to be arranged next to one another.
B29C 48/693 - Filtres substantiellement plats montés à l’extrémité d’une vis d’extrudeuse, perpendiculairement à l’axe d’alimentation
B29C 48/40 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple utilisant au moins deux vis parallèles, p. ex. extrudeuses à vis doubles
B29C 48/691 - Dispositions pour le remplacement des filtres, p. ex. par deux filtres parallèles pour utilisation alternative
A pressure sensor assembly having a remotely parameterisable, electrical threshold device is provided. A transmission unit is connected at least to a sensor element and a data bus line leading to an external connection. A monitoring unit contains the threshold device and is connected to the sensor element and an actuator for generating an output signal. A closed housing has at least the transmission unit and the overload protection unit arranged therein. The transmission unit is connected to the monitoring unit via at least one internal data bus line, which is interrupted at an electrically switchable bridge switch element. At least one parameterisation module connected to the threshold device is provided in the monitoring unit for adjusting a lower and/or an upper pressure threshold value. The parameterisation module can be connected to the transmission unit via the internal data bus line by closing the bridge switch element.
G01L 19/00 - Détails ou accessoires des appareils pour la mesure de la pression permanente ou quasi permanente d'un milieu fluent dans la mesure où ces détails ou accessoires ne sont pas particuliers à des types particuliers de manomètres
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pressionTransmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
5.
EXTRUDER SYSTEM AND METHOD FOR PROCESSING WASHED POLYMER PARTICLES
The invention relates to an extruder system (100) for processing washed polymer particles, at least comprising an MRS extruder (10), which has: a housing (11) having an inner housing cavity (18), said housing cavity extending at least between an inlet opening (25) and an outlet opening (26) and comprising at least one degassing zone; and an extruder screw (20), which can be rotated in the housing cavity and which has at least one helical extruder screw flight, the extruder screw being divided into: - an inlet screw section (21), into which the inlet opening (25) leads; - a multi-screw section (22), in which a plurality of satellite screws (23) rotate together with a main screw and additionally rotate about their own axis, the diameter of the multi-screw section (22) being larger than the screw diameter of the inlet screw (21); - a transition cone (21), which is formed between the inlet screw section (21) and the multi-screw section (22); and - an outlet screw section (24), which has a smaller diameter than the multi-screw section (22); characterized: - in that a cutter-compactor (30) is provided, at least comprising a cutting container, which has an outlet opening connected to the inlet opening (25) of the MRS extruder (10), and a blade device, which has at least one blade that rotates in the cutting container (31); - in that the diameter-length ratio of the inlet screw section (21) is less than 1:22; and - in that the multi-screw section (22) contains four to eight satellite screws (23), the length of each of which is at least four times its diameter.
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
B29C 48/793 - Traitement thermique de la matière à mouler par extrusion ou des pièces ou des couches préformées, p. ex. par chauffage ou refroidissement en amont de la zone de plastification, p. ex. chauffage dans la trémie
The invention relates to a screen wheel filter device (100) for the high-pressure filtration of a plastic melt, at least comprising a housing (10), which at least has: - an inlet plate with at least one inlet channel; - an outlet plate with at least one outlet channel; - at least one spacing element arranged between the inlet plate and the outlet plate and a bearing ring (18) on which a screen wheel (20) arranged between the inlet plate and the outlet place is rotatably mounted; wherein: the screen wheel (20) has a plurality of screen segments (22.1 ... 22.5), which can each be positioned between the inlet channel and the outlet channel and through each of which a flow can pass; a lubricating gap is formed in each case between the screen wheel (20) and the inlet plate and between the screen wheel (20) and the outlet plate; the inlet channel and the outlet channel each have a funnel opening expanding toward the screen wheel (20), between which funnel openings a throughflow region (40) is formed, characterised in that - at least one radial pressure relief flow path is formed within at least one lubricating gap, crosses an inner annular sealing crosspiece (23) of the screen wheel (20) and extends between the throughflow region (40) and at least one pressure relief bore (42), - the at least one pressure relief bore (42) is arranged in the inlet plate or in the outlet plate and opens at the bearing ring (18), and the pressure relief bore (42) is fluidically connected to a relief opening (48) in the outside of the housing (10) via a pressure relief channel formed in the housing (10).
The invention relates to a screen wheel filter device for the high-pressure filtration of a plastic melt, at least comprising a housing, which at least has: - an inlet plate with at least one inlet channel; - an outlet plate with at least one outlet channel; - at least one spacing element arranged between the inlet plate and the outlet plate and a bearing ring (18) on which a screen wheel (20) arranged between the inlet plate and the outlet plate is rotatably mounted; - a tensioning bolt (19) which is guided through the bearing ring (18) and via which the inlet plate together with the outlet plate, including the bearing ring (18) inserted therebetween, is braced, wherein: - the screen wheel (20) has a plurality of screen segments (22.1 ... 22.13) which can each be positioned between the inlet channel and the outlet channel and through each of which a flow can pass, - a throughflow region is formed between the opening in the inlet channel and the opening in the outlet channel facing toward the screen wheel (20) in each case, and those surfaces of all screen segments (22.1... 22.13) which, when projected onto the inlet plate and the outlet plate, at least partially overlap the throughflow region (40), jointly form an active pressure surface region (44), - a lubricating gap is formed in each case between a sealing surface (23, 24, 25) of the screen wheel (20) and an inner surface of the inlet plate and an inner surface of the outlet plate, characterised in that - a cross-sectional area A2 of the bearing ring (18) is at least 9 times the cross-sectional area A1 of the central tensioning bolt (19.1); - and the cross-sectional area A1 of the central tensioning bolt (19.1) is 0.1 to 0.4 times the area A3 of the active pressure surface region (44).
A multiport valve unit for medium- to high-viscosity fluids having a housing comprising at least: an inlet plate having at least one main flow channel, an outlet plate having at least one main flow channel, and at least one secondary flow channel. At least one intermediate plate and/or at least one spacer element are located between the inlet plate and the outlet plate. The multiport valve unit also has at least one switching element mounted pivotably or rotatably in the housing, which switching element is located between the inlet plate and the outlet plate, and, in a starting position, connects the main flow channels to one another via at least one passage opening.
F16K 3/06 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture à faces d'obturation planesGarnitures d'étanchéité à cet effet avec éléments de fermeture articulés à pivot en forme de plaques disposées entre l'alimentation et l'évacuation
F16K 3/314 - Formes ou structures de la partie coulissanteSa fixation sur sa tige
F16K 11/074 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont toutes les faces d'obturation se déplacent comme un tout comportant uniquement des tiroirs à éléments de fermeture articulés à pivot à faces d'obturation planes
9.
SUPPORT BEARING ELEMENT FOR AN EXTRUDER SCREW FOR A MULTI-SCREW EXTRUDER
A support bearing element for an extruder screw for a multi-screw extruder, at least comprising a cone, a plurality of grooves, which are located on the outer periphery and are axially parallel to the axis of rotation of the support bearing element, each for receiving a satellite screw and a drive pinion connected thereto. At least one plain bearing is provided in the groove in order to support the satellite screw next to the drive pinion thereof, the plain bearing being positioned or designed in a bearing holder formed on the support bearing element.
An extruder screw for a multi-screw extruder, having an intake and metering section. A rotor body has an enlarged diameter relative to the intake and metering section and has a plurality of satellite screws positioned on the outer periphery of the rotor body at least over part of the length thereof. A cone and an adjoining drive zone are formed between the intake and metering section and the rotor body, in which drive zone the satellite screws each engage via a drive pinion in an external toothing on the rotor body or in an internal toothing on a stator ring or in the inner wall of an extruder housing. At least one peripherally closed flow channel is formed, which flow channel extends from an inlet opening on the cone to an outlet opening located downstream of the drive pinions in the direction of flow.
B29C 48/38 - Plastificateurs, homogénéisateurs ou dispositifs d’alimentation à plusieurs étages utilisant plusieurs vis dans le même fourreau
B29C 48/25 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
A multi-shaft preparation unit for plastic melts, having an extruder housing with an enclosed treatment chamber in its interior, and at least one rotor body shaft mounted rotatably in the treatment chamber and a sealing and guiding body with multiple recesses, in each of which a satellite screw is mounted. The multi-shaft preparation unit has a drive unit in which a gearing unit is arranged outside the extruder housing between a drive motor and the treatment chamber and is connected to the drive shaft sections of the rotor body shaft and of the satellite screws which lead out of the treatment chamber of the extruder housing. A separating device for decoupling a flow of fluid and/or heat emanating from the treatment chamber is provided between the extruder housing and the gearing unit, through which the drive shaft ends of the rotor body shaft and of the satellite screws pass.
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
12.
FILTER DEVICE FOR PVC PLASTIC MELT FOR CONNECTION TO A TWIN SCREW EXTRUDER AND TWIN SCREW EXTRUDER FOR PVC PROCESSING
Filter device (100) for PVC plastic melt, for connection to a twin screw extruder, comprising at least: - a housing, which has at least: - an inlet block (11) with at least one inlet channel, - an outlet block (12) with at least one outlet channel; - at least one spacer element (15, 16) arranged between the inlet block (11) and the outlet block (12); - a screen wheel (30), - which is rotatably mounted in the housing, - which is arranged at least in part between the inlet block (11) and the outlet block (12) and - which has a plurality of screen points, which can each be positioned between the inlet channel and the outlet channel and in each of which at least one screen element through which plastic melt can flow can be inserted, - a drive device for rotating the screen wheel (30) in the housing; characterised in that - the inlet channel is formed, at least in part, in an inlet melt pocket (51) in the inlet block (11), which has, on an inlet side on the outside of the housing, a twin extruder screw receptacle for two screw tips of two extruder screws (201, 202) to be arranged next to one another, and which widens in an oval or elongated hole-shaped funnel section (52) and opens out in front of the screen wheel (30); - the outlet channel is formed, at least in part, in an outlet melt pocket in the outlet block (12), which tapers in the direction of flow from a funnel section (42) facing the screen wheel (30).
B29C 48/691 - Dispositions pour le remplacement des filtres, p. ex. par deux filtres parallèles pour utilisation alternative
B29C 48/693 - Filtres substantiellement plats montés à l’extrémité d’une vis d’extrudeuse, perpendiculairement à l’axe d’alimentation
B29C 48/40 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple utilisant au moins deux vis parallèles, p. ex. extrudeuses à vis doubles
The invention relates to a pressure sensor assembly (100), comprising a remotely parameterisable, electrical threshold device (31), at least comprising: an electrical sensor element (40); a transmission unit (20) that is connected at least to the sensor element (40) and a data bus line (24) leading to an external connection (14); a monitoring unit (30) which contains the threshold device (31) and is connected to the sensor element (40) and an actuator for generating an output signal; and a closed housing (10) in which at least the transmission unit (20) and the overload protection unit (30) are arranged. The transmission unit (20) is connected to the monitoring unit (30) via at least one internal data bus line (22), which is interrupted at an electrically switchable bridge switch element (32). At least one parameterisation module (33, 34) connected to the threshold device (31) is provided in the monitoring unit (30) for adjusting a lower and/or an upper pressure threshold value, wherein said parameterisation module can be connected to the transmission unit (20) via the internal data bus line (22) by closing the bridge switch element (32). The bridge switch element (32) can be closed via a release element (38), which can be actuated from the outside from the region close to the housing (10).
The invention relates to a multiport valve unit (100) for medium- to high-viscosity fluids, said multiport valve unit having a housing comprising at least: - an inlet plate having at least one main flow channel (41); - an outlet plate having at least one main flow channel; and - at least one secondary flow channel (42); wherein at least one intermediate plate (13, 14) and/or at least one spacer element (15) are located between the inlet plate and the outlet plate. The multiport valve unit also has at least one switching element (20) mounted pivotably or rotatably in the housing (10), which switching element: - is located between the inlet plate and the outlet plate; - in a starting position, connects the main flow channels (41) to one another via at least one passage opening (22, 23); and - in at least one switching position, connects in each case at least one of the main flow channels (41) to the at least one secondary flow channel (42) via at least one deflection channel (24) which opens only to one side of the switching element (20); wherein - the switching element (20) is segment-shaped and is positioned adjacent to the intermediate plate (13, 14) and/or the at least one spacer element (15); - the mouth openings of the main flow channels (41), which mouth openings are provided in the inlet plate (11) and/or in the outlet plate (12) and face the switching element (20), and a mouth opening of the at least one secondary flow channel (42) are located on different partial circles (1, 2) with respect to a pivot axis (19) of the switching element (20); and - the deflection channel (24) extends on the switching element (20) between the partial circles (1, 2).
The invention relates to a support bearing element (10) for an extruder screw (100) for a multi-screw extruder (200), at least comprising: - a cone (11); - a plurality of grooves (15), which are located on the outer periphery and are axially parallel to the axis of rotation of the support bearing element (10), each for receiving a satellite screw (20) and a drive pinion (21) connected thereto. At least one plain bearing (70) is provided in the groove (15) in order to support the satellite screw (20) next to the drive pinion (21) thereof, the plain bearing (70) being positioned or designed in a bearing holder (16) formed on the support bearing element (10).
The invention relates to an extruder screw (100) for a multi-screw extruder (200), at least comprising: - an intake and metering section (30); - a rotor body (50) which has an enlarged diameter relative to the intake and metering section (30) and which has a plurality of satellite screws (20) positioned in an exposed manner on the outer periphery of the rotor body (50) at least over part of the length thereof; wherein a cone (11) and an adjoining drive zone are formed between the intake and metering section (30) and the rotor body (50), in which drive zone the satellite screws (20) each engage via a drive pinion (21) in an external toothing on the rotor body (50) or in an internal toothing on a stator ring (244) or in the inner wall of an extruder housing (240) of the multi-screw extruder (100). At least one peripherally closed flow channel (13) is formed in each case between at least two adjacent grooves (15) for the drive pinions (21), which flow channel extends from an inlet opening (12) on the cone (11) to an outlet opening (14) located downstream of the drive pinions (21) in the direction of flow.
The invention relates to a multi-shaft preparation unit (20) for plastic melts, at least comprising an extruder housing (24), which has an enclosed treatment chamber (21) for plastic melts in its interior, and at least one rotor body shaft (22) mounted rotatably in the treatment chamber (21) and having a sealing and guiding body (22.3) with multiple recesses, in each of which a satellite screw (23) is mounted, characterised in that the multi-shaft preparation unit (20) has a drive unit (30) in which a gearing unit (31) is arranged outside the extruder housing (24) between a drive motor (32) and the treatment chamber (21), said gearing unit being connected to the drive shaft sections (22.2, 23.2) of the rotor body shaft (22) and of the satellite screws (23) which lead out of the treatment chamber (21) of the extruder housing (24), and is further characterised in that a separating device (33) for decoupling a flow of fluid and/or heat emanating from the treatment chamber (21) is provided between the extruder housing (24) and the gearing unit (31), through which separating device the respective drive shaft ends (22.2, 23.2) of the rotor body shaft (22) and of the satellite screws (23) pass.
B29C 48/80 - Traitement thermique de la matière à mouler par extrusion ou des pièces ou des couches préformées, p. ex. par chauffage ou refroidissement dans la zone de plastification, p. ex. par chauffage des cylindres
18.
EXTRUDER FOR THE VISCOSITY-INCREASING PREPARATION OF MELTABLE POLYMERS
An extruder comprising a housing having an inner recess; in which an extruder screw having a helical extruder screw flight is rotatably mounted. The outer diameter of the extruder screw is subdivided into a diameter start region, diameter central region, and diameter end region, wherein the diameter central region has a larger outer diameter than the other diameter regions, and a conical transition is formed in each case between regions at different diameters, and wherein at least one degassing zone formed in the diameter central region said degassing zone having a housing recess from which at least one suction opening extends to an outer side of the housing. The flow channel formed between the extruder screw shaft core and the inner wall of the housing recess is an annular expansion nozzle, wherein the outer diameter of the extruder screw flight is constant and the radial flow channel height increases.
B29B 7/42 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec un seul arbre à vis ou à vis sans fin
19.
EXTRUDER FOR THE VISCOSITY-INCREASING PROCESSING OF MELTABLE POLYMERS
An extruder for the viscosity-increasing preparation of meltable polymers, wherein an extruder screw with at least one helical extruder screw flight is positioned in a housing having an inner housing recess. A diameter central region has a larger outer diameter than at least one of the other diameter regions, and a conical transition is formed in each case between regions of different diameters. Two degassing zones are provided in the diameter central region, each of which has at least one associated suction opening in the housing, one degassing zone being designed in the region of the satellite screws and an additional degassing zone being designed upstream thereof in the flow direction. The thread depth of the screw threads, formed between the extruder screw flights is greater in both degassing zones than in at least one sealing and compression section formed therebetween.
B29B 7/42 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec un seul arbre à vis ou à vis sans fin
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Non-return valves of plastic being parts of machines; reversible flow filters being parts of machines; machines for processing plastics; machine tools for the plastics processing industry, namely, machine tools for plastic extruders and plastic filtering machines; machinery for working plastic material; plastic jet molding machines; plastics molding machines; extrusion machines for plastic; industrial robots for working plastic material; filtering machines, namely, filtering machines for plastic extruders and plastic filtering machines; filter housings being parts of machines; filters for plastic extruders and plastic filtering machines; filters being parts of plastic extruders and plastic filtering machines; filter cartridges for plastic filtering machines, polymer processing machines, and recycling machines Active infra-red sensors; digital sensors for determining position; digital sensory devices for determining position; manometer lines being parts for manometers, other than for medical use; electric control apparatus for controlling plastic extruders and plastic filtering machines; electric sensors; electronic sensors for determining position; electro-optical sensors; remote temperature sensors; recorded and downloadable firmware for plastic extruders and plastic filtering machines and device drivers, namely, downloadable and recorded software for operating plastic extruders and plastic filtering machines; frequency transformers; level sensors; gas sensors; apparatus for measuring, monitoring and analyzing electricity consumption; electronic apparatus for recording data; graphic terminals for plastic extruders and plastic filtering machines; graphics tablets; gravimeters; grip size gauges; system boards (mother cards); downloadable computer software for remote monitoring and analysis of plastic extruders and plastic filtering machines; industrial automation controls; recorded and downloadable industrial process control software; electric cable harnesses for plastic extruders and plastic filtering machines; camera containing a linear image sensor; plastic testing machines; laser sensors for plastic extruders and plastic filtering machines; solenoid valves being electromagnetic switches; measuring, detecting, monitoring and controlling devices for plastic extruders and plastic filtering machines; measuring apparatus for plastic extruders and plastic filtering machines; object detecting sensors; recorded and downloadable testing software for plastic extruders and plastic filtering machines; rotation controlling sensors; sensors, detectors, and monitoring instruments for plastic extruders and plastic filtering machines; Industrial calibration sensors for use with machine tools; radiation sensing apparatus; temperature controlling apparatus for machines; temperature sensors; thermocouples; thermometers, not for medical purposes; ultrasonic sensors; universal remote controls for controlling plastic extruders and plastic filtering machines; recorded and downloadable business software for use with plastic extruders and plastic filtering machines for operating plastic extruders and plastic filtering machines; USB dongles being wireless network adapters; vacuum measuring instruments; pressure indicator plugs for valves; plugboards; viscosimeters; volumetric measuring apparatus; prerecorded flash memory cards featuring operating software for plastic extruders and plastic filtering machines; prerecorded magnetic data carriers featuring operating software for plastic extruders and plastic filtering machines; thermal sensors being thermostats; water temperature gauges; water temperature regulators for plastic extruders and plastic filtering machines; recorded and downloadable web application for operating plastic extruders and plastic filtering machines; recorded and downloadable network access server operating software for use with plastic extruders and plastic filtering machines repair or maintenance of plastic processing machines and apparatus; installation of industrial machinery; installation of plants, namely, installation of plastic extruders and plastic filtering machines; machinery installation, maintenance and repair; providing information relating to the repair or maintenance of plastic processing machines and apparatus
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Non-return valves of plastic [parts of machines]; reversible
flow filters [parts of machines]; machines for processing
plastics; plastics injection forming machines; machines for
shaping plastic material; machine tools for the plastics
processing industry; machines for processing plastics;
machinery for working plastic material; plastic jet moulding
machines; injection plastic molding machines; plastics
injection forming machines; plastics welding machines;
plastics moulding machines; extrusion machines for plastic;
industrial robots for working plastic material; filtering
machines; filter presses for chemical processing; filtering
machines, separators and centrifuges; filter housings being
parts of machines; filters for machines; filters being parts
of machines; cartridges for filtering machines; stop valves
of plastic [parts of machines]. Active infra-red sensors; digital sensors; digital sensory
devices; manometer lines, other than for medical use;
electric control apparatus; electric sensors; electronic
sensors; electro-optical sensors; optical fibre sensors;
valves (remote controls for automatically operating -);
remote temperature sensors; humidity sensors; firmware and
device drivers; flash memory cards; flash memory card
readers; frequency transformers; level sensors; gas sensors;
apparatus for measuring, monitoring and analyzing
electricity consumption; apparatus for recording data;
graphic terminals; graphics tablets; gravimeters; grip size
gauges; system boards (mother cards); downloadable computer
software for remote monitoring and analysis; industrial
automation controls; industrial software; infrared cameras;
interactive touch screen terminals; interfaces for
computers; cable harnesses; camera containing a linear image
sensor; plastic testing machines; laser sensors; lcd
monitors; light emitting diode displays; led screen
displays; led monitors; led position sensors; circuit boards
provided with integrated circuits; light sensors; air
quality sensors; air temperature sensors; magnetic sensors;
solenoid valves [electromagnetic switches]; measuring,
detecting, monitoring and controlling devices; measuring
apparatus; object detecting sensors; optical speed sensors;
optical position sensors; optical sensors; passive infrared
detectors; photoelectric sensors; occupancy sensors; testing
software; rotation controlling sensors; oxygen sensors, not
for medical use; pollutant sensors; sensors, detectors and
monitoring instruments; sensors for use with machine tools;
radiation sensing apparatus; temperature controlling
apparatus for machines; temperature sensors; thermocouples;
thermometers, not for medical purposes; ultrasonic measuring
apparatus; ultrasonic sensors; universal remote controls;
business software; usb dongles [wireless network adapters];
usb flash drives with micro usb connectors compatible with
mobile phones; vacuum measuring instruments; pressure
indicator plugs for valves; plugboards; viscosimeters;
volumetric measuring apparatus; prerecorded flash memory
cards; prerecorded magnetic data carriers; thermal sensors
[thermostats]; water level indicators; water temperature
gauges; water temperature regulators; web application and
server software; scientific apparatus and instruments. Repair of filters for machines, motors or engines; repair or
maintenance of plastic processing machines and apparatus;
installation of industrial machinery; installation of
plants; machinery installation, maintenance and repair;
providing information relating to the repair or maintenance
of plastic processing machines and apparatus.
22.
Degassing extruder having a multi-screw unit and method for degassing polymer melts therewith
A degassing extruder having a multi-screw unit, which degassing extruder comprises a housing having a feed region having a feed opening, an inner housing recess having an extraction opening extending as far as the outside and an outlet region having an outlet opening. The multi-screw unit rotatably arranged in the housing recess comprises: a rotor element having a main screw web extending over the outer circumference of a rotor shaft core, and a rotationally driven satellite screw, which is mounted in a receiving groove on the rotor element, which receiving groove extends at least along part of the length of the multi-screw unit. At least in the region of the extraction opening, the main screw web above the receiving groove has an respective opening recess for leading the satellite screw through.
A method of processing solid polymer particles of a poly condensate by a multi-rotation system. Polymer particles are melted in a first extruder section having an extruder screw that rotates. The partly molten polymer mass containing between 5% by volume and 50% by volume of unmolten polymer particles is passed into a second extruder section with a poly-rotation unit and multiple satellite screws that rotate therein. A diameter of the poly-rotation unit is increased compared to the screw diameter of the first extruder section and a transition cone is formed between the extruder sections and a conical gap is formed with respect to the housing. Ambient pressure plastification of the remaining polymer particles is performed by passage through a drive zone. The polymer mass is guided completely molten in the drive zone onward through a venting zone under reduced pressure.
B29C 48/80 - Traitement thermique de la matière à mouler par extrusion ou des pièces ou des couches préformées, p. ex. par chauffage ou refroidissement dans la zone de plastification, p. ex. par chauffage des cylindres
B29C 48/27 - NettoyagePurgeÉvitement de la contamination
B29C 48/425 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple utilisant au moins deux vis parallèles, p. ex. extrudeuses à vis doubles utilisant au moins trois vis
For the production of polymers in which there are fillers with particle sizes below 10 μm incorporated and homogeneously distributed, a polymer starting material is input into a twin-screw extruder and is melted there to give a melt. In a conveying and mixing section, a suspension, which is formed of the fillers and of a carrier liquid, is injected into the melt. The melt viscosity is reduced by injection of the carrier liquid in the conveying and mixing section in that a cleavable polycondensate is used as polymer and low-molecular-weight cleavage product arising during the polycondensation is used as carrier liquid, and therefore the molten polymer is at least to some extent depolymerized within the conveying and mixing section. That the mixture, which is formed of the melt whose viscosity is reduced by cleavage, of the remainder of the carrier liquid and of the fillers, is homogenized.
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
B29B 7/60 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires pour alimentation, p. ex. pièces de guidage pour la matière à traiter
A filtering device for highly viscous media, in which filtering device a rotatably mounted screening wheel which has a plurality of screening cavities is arranged between a front housing element and a rear housing element. According to the invention, a plurality of screening cavities lying beside one another, through which flow can pass jointly, are combined into at least one filter group. To this end, on both sides beside the filter group, a closed blocking segment is provided on the screening wheel which segment, when positioned in associated blocking regions of the housing, is sealed off with respect to the housing elements on both sides of the screening wheel. The blocking regions in the housing are in each case larger than or as large as a screening cavity together with a sealing web surrounding the same.
The invention relates to an extruder (100) comprising a housing (10) having an inner housing recess (18) in which an extruder screw (20) having a helical extruder screw flight (32, 33, 34) is rotatably mounted. The outer diameter of the extruder screw (20) is subdivided into a diameter start region, diameter central region, and diameter end region, wherein the diameter central region (23) has a larger outer diameter than the other diameter regions, and a conical transition is formed in each case between regions of different diameters, and wherein at least one degassing zone (23.2) is formed in the diameter central region (23), said degassing zone having a housing recess from which at least one suction opening (15) extends to an outer side of the housing (10). The flow channel formed between the extruder screw shaft core and the inner wall of the housing recess (18) is designed as an annular expansion nozzle, wherein the outer diameter of the extruder screw flight (32, 33, 34) is constant and the radial flow channel height increases.
B29B 7/42 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec un seul arbre à vis ou à vis sans fin
B29B 7/86 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires pour travailler à une pression supérieure ou inférieure à la pression atmosphérique
B29C 48/52 - Vis avec un diamètre externe variable le long de l’axe longitudinal, p. ex. pour obtenir différents écarts de pas de vis
B29C 48/53 - Vis à profondeur de creux variable, p. ex. à variation du diamètre de tige de la vis
The invention relates to an extruder for the viscosity-increasing preparation of meltable polymers, wherein an extruder screw (20) with at least one helical extruder screw flight (31, 32, 33, 34, 35) is positioned in a housing having an inner housing recess. The outer diameter of the extruder screw (20) is subdivided into a diameter start region, diameter central region, and diameter end region (21, 22, 23), wherein the diameter central region (23) has a larger outer diameter D2 than at least one of the other diameter regions (21, 25), and a conical transition (22, 24) is formed in each case between regions of different diameters D1, D2 or D3. Two degassing zones (23.1, 23.3) are provided in the diameter central region (23), each of which has at least one associated suction opening in the housing, one degassing zone (23.3) being designed in the region of the satellite screws (26) and an additional degassing zone (23.1) being designed upstream thereof in the flow direction. The thread depth of the screw threads (42, 43, 44) formed between the extruder screw flights (32, 33, 34, 35) is greater in both degassing zones (23.1, 23.3) than in at least one sealing and compression section (23.2) formed therebetween.
B29B 7/42 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec un seul arbre à vis ou à vis sans fin
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
B29B 7/86 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires pour travailler à une pression supérieure ou inférieure à la pression atmosphérique
B29C 48/425 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple utilisant au moins deux vis parallèles, p. ex. extrudeuses à vis doubles utilisant au moins trois vis
B29C 48/52 - Vis avec un diamètre externe variable le long de l’axe longitudinal, p. ex. pour obtenir différents écarts de pas de vis
B29C 48/53 - Vis à profondeur de creux variable, p. ex. à variation du diamètre de tige de la vis
An extruder screw for a multi-screw extruder for plastics extrusion includes: a feeding and metering zone for melting and homogenizing the plastic and an evacuating zone for carrying away gaseous constituents and a compressing and/or discharging zone; a multi-screw section, which has a plurality of planetary screws, which lie open on the outer circumference of the extruder screw, at least over part of their length; and a driving zone, in which the planetary screws engage by way of a toothing in an external toothing on a central shaft or in an internal toothing in a stator ring or in the inner wall of an extruder bore of the multi-screw extruder. The feeding and metering zone extends into the multi-screw section, wherein the respective part of the planetary screws that is lying in the metering zone is at least partially enclosed.
B29C 48/425 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple utilisant au moins deux vis parallèles, p. ex. extrudeuses à vis doubles utilisant au moins trois vis
B29C 48/375 - Plastificateurs, homogénéisateurs ou dispositifs d’alimentation à plusieurs étages
B01F 7/08 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe horizontal ou incliné à vis sans fin
B01F 7/14 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe horizontal ou incliné à agitateurs animés d'un mouvement planétaire
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
B29C 48/365 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des pompes, p. ex. des pompes à piston
30.
METHOD OF PROCESSING SOLID POLYMER PARTICLES OF A POLYCONDENSATE BY MEANS OF A MULTI-ROTATION SYSTEM
A method of processing solid polymer particles of a polycondensate by means of a multi-rotation system (100) comprises: a) intake and partial melting of the polymer particles in a first extruder section (1) having an extruder screw (101) that rotates within a housing recess (51) of a housing (50); b) passing of the partly molten polymer mass containing between 5% by volume and 50% by volume of unmolten polymer particles into a second extruder section (2) in the form of a multi-screw extruder section (2) with a poly-rotation unit (20) and multiple satellite screws (26) that rotate therein, wherein the diameter of the poly-rotation unit (20) is increased compared to the screw diameter of the first extruder section (1) and wherein a transition cone (21) is formed between the extruder sections (1, 2) and a conical gap (52) is formed with respect to the housing (50); c) ambient pressure plastification of the remaining polymer particles by means of passage through a drive zone (23, 24) which is present beyond the transition cone (21) in flow direction and has exposed drive pinions (23) of the satellite screws (26); d) guiding of the polymer mass completely molten in the drive zone (23, 24, 25) onward through a venting zone under reduced pressure; e) removal of volatile constituents from the polymer melt in the venting zone; and f) transfer of the polymer melt to a discharge extruder section (3).
B29C 48/00 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet
B29C 48/38 - Plastificateurs, homogénéisateurs ou dispositifs d’alimentation à plusieurs étages utilisant plusieurs vis dans le même fourreau
B29C 48/80 - Traitement thermique de la matière à mouler par extrusion ou des pièces ou des couches préformées, p. ex. par chauffage ou refroidissement dans la zone de plastification, p. ex. par chauffage des cylindres
31.
DEGASSING EXTRUDER HAVING A MULTI-SCREW UNIT AND METHOD FOR DEGASSING POLYMER MELTS THEREWITH
The invention relates to a degassing extruder having a multi-screw unit, which degassing extruder comprises a housing having a feed region having a feed opening, an inner housing recess having an extraction opening extending as far as the outside and an outlet region having an outlet opening. The multi-screw unit (10) rotatably arranged in the housing recess comprises: a rotor element (11) having a main screw web (12) extending over the outer circumference of a rotor shaft core (15), and a rotationally driven satellite screw (16), which is mounted in a receiving groove (13) on the rotor element (11), which receiving groove (13) extends at least along part of the length of the multi-screw unit (10). At least in the region of the extraction opening, the main screw web (12) above the receiving groove (13) has an respective opening recess (12.1) for leading the satellite screw (16) through; the circumference of the satellite screw (16) in the flights (14) formed by the main screw web (12) is at least 40% and at most 70% enclosed in the receiving groove (13) in the rotor shaft core (15), and the level of enclosure of the cross section of the satellite screw (16) within the main screw web (12) is greater than in the flights (14) outside the same and is at most 95%.
The aim of the invention is to produce polymers in which fillers having particles sizes of less than 10 μm are incorporated and homogeneously distributed. This aim is achieved, according to the invention, in that a polymer starting material is introduced into a twin-screw extruder (1) and is melted there to form a melt. In a conveying and mixing section (4), a suspension, consisting of the fillers and a carrier liquid, is injected into the melt. The melt viscosity is reduced by injection of the carrier liquid in the conveying and mixing section (4) in that a cleavable condensation polymer is used as the polymer and a low-molecular-weight cleavage product produced in the polycondensation process is used as the carrier liquid, such that the melted polymer is at least partially depolymerized within the conveying and mixing section (4). The mixture of the melt, the viscosity of which has been reduced by cleavage, the remaining carrier liquid and the fillers is homogenized. Finally the viscosity of the melt is increased again. In a degassing extruder (2), a polycondensation is carried out in order to increase viscosity, by applying a vacuum and removing the cleavage product from the degassing extruder (2) by means of the vacuum.
B29B 7/86 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires pour travailler à une pression supérieure ou inférieure à la pression atmosphérique
C08J 3/205 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide
B29B 7/46 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre
The invention relates to a filtering device for highly viscous media, in which filtering device a rotatably mounted screening wheel (20') which has a plurality of screening cavities (21.1'… 21.8'), is arranged between a front housing element and a rear housing element. According to the invention, a plurality of screening cavities (21.1'… 21.8') lying beside one another, through which flow can pass jointly, are combined into at least one filter group (2', 4',). To this end, on both sides beside the filter group (2', 4'), a closed blocking segment (23.1', 23.2') is provided on the screening wheel (20',) which segment, when positioned in associated blocking regions of the housing, is sealed off with respect to the housing elements on both sides of the screening wheel (20'). The blocking regions in the housing are in each case larger than or as large as a screening cavity (21.1'… 21.8') together with a sealing web surrounding the same.
On a rotary screen filtering device for medium to high-viscosity fluids, which comprises a rotary screen mounted for rotation in a housing, which screen has at least one screen element through which fluid can flow, the rotary screen, in the region of its sealing faces and the intermediate plates are fabricated or machined together so that they are of identical height. A gap width compensation layer is then inserted between the inlet plate and the intermediate plate and/or between the outlet plate and the intermediate plate. The package of plates is then pretensioned by means of screw bolts in such a manner that all the plates lie firmly against one another up to a maximum permissible operating pressure. Lubrication gaps of defined width are created between the sealing faces and the opposing inner faces of the inlet and outlet plates.
The aim is to refine a method of establishing a predetermined viscosity when recycling polyester wastes having inherently different viscosities in such a way that the desired final material has the appropriate viscosity after a fairly short time, and with little energy consumption, and the color of the melt is also to be influenceable. To this end, it is proposed that the polyester wastes are melted in a first zone (9) of an extruder (1) and the polyester wastes, due to the moisture introduced with them, undergo hydrolytic degradation, in a second zone (11) of the extruder (1) polycondensation takes place and hydrolytic degradation is counteracted and equalization of the viscosity differences is started, in a third zone (13) of the extruder (1) a solvent such as water or alcohol is added such that hydrolytic and/or glycolytic degradation of the melt take(s) place and result(s) in uniform viscosity of the melt, in a fourth zone (14) of the extruder (1) active mixing of the melt takes place and the melt is transferred from the extruder (1) into a polycondensation reactor (6), and the final desired viscosity of the melt is set in the polycondensation reactor (6).
C08J 11/24 - Récupération ou traitement des résidus des polymères par coupure des chaînes moléculaires des polymères ou rupture des liaisons de réticulation par voie chimique, p. ex. dévulcanisation par traitement avec une substance organique par traitement avec des composés organiques contenant de l'oxygène contenant des groupes hydroxyle
C08J 11/14 - Récupération ou traitement des résidus des polymères par coupure des chaînes moléculaires des polymères ou rupture des liaisons de réticulation par voie chimique, p. ex. dévulcanisation par traitement avec de la vapeur ou de l'eau
36.
EXTRUDER SCREW FOR A MULTI-SCREW EXTRUDER FOR PLASTICS EXTRUSION
An extruder screw (100) for a multi-screw extruder for plastics extrusion comprises: - a feeding and metering zone (1) for melting and homogenizing the plastic and an evacuating zone (2) for carrying away gaseous constituents and a compressing and/or discharging zone (4), - a multi-screw section (20), which has a plurality of planetary screws (30), which lie open on the outer circumference of the extruder screw (100), at least over part of their length; and - a driving zone (3), in which the planetary screws (30) engage by way of a toothing (33) in an external toothing on a central shaft or in an internal toothing in a stator ring or in the inner wall of an extruder bore of the multi-screw extruder. The feeding and metering zone (1) extends into the multi-screw section (20), wherein the respective part of the planetary screws (30) that is lying in the metering zone (1) is at least partially enclosed.
On a rotary screen filtering device (100) for medium to high-viscosity fluids, which comprises a rotary screen (20) mounted for rotation in a housing (10), which screen has at least one screen element (21) through which fluid can flow, the rotary screen (20), in the region of its sealing faces (22, 23, 24) and the intermediate plates (13, 14, 15) are fabricated or machined together so that they are of identical height. A gap width compensation layer (16) is then inserted between the inlet plate (12) and the intermediate plate (15) and/or between the outlet plate (11) and the intermediate plate (15). The package of plates (11, 12, 13, 14, 15) is then pretensioned by means of screw bolts (17) in such a manner that all the plates (11, 12, 13) lie firmly against one another up to a maximum permissible operating pressure (p0). Lubrication gaps (25, 26) of defined width are created between the sealing faces (22, 23, 24) and the opposing inner faces of the inlet and outlet plates (11, 12).
The invention relates to a filter device (100) for a plastic melt or another highly viscous fluid, comprising a housing (10) with an inlet plate (11) and a discharge plate (12). At least one spacing element (15, 16) and a screen wheel (20) which can be rotated by a drive device (30) are arranged between the inlet plate and the discharge plate. The inlet plate (11) and the discharge plate (12) are clamped against each other with the inclusion of the spacing element (15, 16) via at least three housing clamping elements (17.1,..., 17.6). An engagement point (32) of the drive device (30) on the screen wheel (20) is arranged outside of the pretensioning surface (40). When viewed in the rotational direction, an angle α larger than 110° and smaller than 160° is formed on the screen wheel (20) between a first line (45) that extends between the pretensioning surface (40) centroid (43) on which a resulting frictional force FR acts and the center (18) of the screen wheel (20) and a second line (46) between the center (18) and the engagement point (32) on which an advancing force Fv acts.
The intention is to provide further development of a process for establishing prescribable viscosity values in recycling of polyester wastes that intrinsically exhibit different viscosities, so as to rapidly provide the desired final product with appropriate viscosity while using little energy, where the colour of the melt can also be adjusted. To this end it is proposed that the polyester wastes are melted in a first region (9) of an extruder (1) and that by virtue of the moisture introduced with the polyester wastes these undergo hydrolytic degradation, that in a second region (11) of the extruder (1) polycondensation takes place, where hydrolytic degradation is inhibited and equalization of viscosity differences is begun, that in a third region (13) of the extruder (1) solvent such as water or alcohol is introduced, where hydrolytic and/or glycolytic degradation of the melt takes place and leads to uniform viscosity of the melt, that in a fourth region (14) of the extruder (1) active mixing of the melt takes place, and that the melt is transferred from the extruder (1) into a polycondensation reactor (6), where the final desired viscosity of the melt is established in the polycondensation reactor (6).
C08J 11/14 - Récupération ou traitement des résidus des polymères par coupure des chaînes moléculaires des polymères ou rupture des liaisons de réticulation par voie chimique, p. ex. dévulcanisation par traitement avec de la vapeur ou de l'eau
C08J 11/24 - Récupération ou traitement des résidus des polymères par coupure des chaînes moléculaires des polymères ou rupture des liaisons de réticulation par voie chimique, p. ex. dévulcanisation par traitement avec une substance organique par traitement avec des composés organiques contenant de l'oxygène contenant des groupes hydroxyle
The invention relates to a device for producing polymers, preferably for processing and polycondensation of polyester, having a substantially cylindrical reactor (1), which has an inlet opening (2) on one side and an exit opening (4) on the other side and an outlet (20) for discharging gases. According to the invention, said device is developed such that the device has a compact design, and such that the device allows the use of higher-viscosity initial substances, even when generating smaller volumes, which is optimally adjustable in respect of the process conditions thereof and which represents a variable, cost-effective solution. According to the invention, the reactor (1) has a continuous, central shaft (6), on which agitating elements or agitating elements and conveying elements are arranged, the inlet opening (2) is connected to an entry extruder (3), the shaft (6) of the reactor and the shaft (6) of the entry extruder (3) form a common shaft (6), and a drive (7) for the common shaft (6) is allocated to the entry extruder (3).
B01J 19/20 - Réacteurs fixes avec éléments internes mobiles en forme d'hélice, p. ex. réacteurs à vis
B01F 7/00 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins
B01F 7/10 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe horizontal ou incliné à disques tournants
B01F 7/14 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe horizontal ou incliné à agitateurs animés d'un mouvement planétaire
41.
Method for producing a foamed body by extrusion and extrusion device for producing a foamed body
A method and an extrusion device for producing a foamed body. A plastics melt is produced inside the casing of a first extruder. The plastics melt is conveyed to an outlet die of a second extruder. The conveyed plastics melt has a foaming agent and expands after being fed through the outlet die. Before the plastics melt is fed through the outlet die, variations in temperature between different radial positions over the cross-section of the plastics melt are reduced by an extruder screw device which has a number of screw spindles distributed around the periphery. The plastics melt which is thus thermally homogeneous is fed through the outlet die.
B29C 44/00 - Moulage par pression interne engendrée dans la matière, p. ex. par gonflage ou par moussage
B29C 44/34 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires
B29C 48/00 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet
B29C 48/385 - Plastificateurs, homogénéisateurs ou dispositifs d’alimentation à plusieurs étages utilisant plusieurs vis disposées en série dans des fourreaux séparés
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
B29C 44/50 - Alimentation en matière à mouler dans une cavité de moulage ouverte ou sur une surface mobile, c.-à-d. pour la fabrication d'objets de longueur indéfinie par différence de pression, p. ex. par extrusion ou par pulvérisation
B29C 48/80 - Traitement thermique de la matière à mouler par extrusion ou des pièces ou des couches préformées, p. ex. par chauffage ou refroidissement dans la zone de plastification, p. ex. par chauffage des cylindres
B29C 48/07 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet caractérisées par la forme à l’extrusion de la matière extrudée plate, p. ex. panneaux
B29C 48/375 - Plastificateurs, homogénéisateurs ou dispositifs d’alimentation à plusieurs étages
B29K 105/04 - Présentation, forme ou état de la matière moulée cellulaire ou poreuse
42.
Method and apparatus for operating a screening wheel filter
A method and an apparatus for operating a screening wheel filter for high-viscosity melts with pressures of >10 bar and temperatures of >90° C., wherein a screening wheel (1) is rotationally driven step by step, and screening inserts (2) arranged in the screening wheel (1) are successively subjected to a stream of cleaning agent produced by a cleaning agent drive (9) in a backflushing cleaning station, are to be optimized in such a way that less cleaning agent is used, better cleaning of the screening inserts takes place and a saving of energy is ensured. For this purpose it is proposed that the cleaning backflushing in the backflushing cleaning station takes place during the rotation of the screening wheel (1), wherein an open-loop or closed-loop control device (7) assigned to the cleaning agent drive (9) is used to set the amount of cleaning agent and/or the pressure of the cleaning agent and/or the flow rate of the cleaning agent in dependence on the rotational speed of the screening wheel (1) and/or in dependence on a differential pressure prevailing at the screening inserts (2) located in the melt channel (4) and the effective opening of the slot die normal to the radial is less than the distance covered by the screening wheel (1) during a driving step.
The invention relates to a method and a device for operating a screen wheel filter for highly viscous melts having pressures >10 bar and temperatures >90° C. which shall be further developed in such a way that less of the highly viscous melt is wasted and that the operation of the screen wheel filter can be made more economical. For this purpose the screen wheel (3) according to the invention is rotationally driven at least one complete revolution, with respect to one of the screen inserts (12) located in the melt channel (10), before the particular screen insert (12) is replaced and/or backflushed, and wherein the drive speed and drive cycling for the screen wheel (3) are set in dependence on the thermal or oxidative decomposition behavior of the particular melt in such a way that, when the particular screen insert (12) reenters the melt channel (10) of the screen wheel filter (1), the melt remaining in the particular screen insert (12) has experienced thermal decomposition or oxidative decomposition of ≦3% cleaved molecular chains, preferably ≦1% cleaved molecular chains.
Described is a melt filter arrangement (10) comprising a melt channel (20), a reverse-flow channel (30), and a screen device (40) for filtering melt in the melt channel (20). The melt channel (20) and the reverse-flow channel (30) extend through the screen device in different areas (23, 33) of the screen device (40). The melt filter arrangement (10) further comprises a reverse-flow screw conveyor device (34, 34') within the reverse-flow channel (30). As a continuous conveying element, said reverse-flow screw conveyor device (34, 34') generates or defines the current in the reverse-flow channel (30).
B01D 29/03 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants avec des éléments filtrants plats autoportants
B29C 47/36 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la matrice ou la filière
Device for pelletizing plastics materials, having a pelletizer (2) which has at least one exit die (14) that is oriented in a substantially axial manner and is arranged in a knife plate (13), the plastics melt being able to be pressed out of said exit die (14), wherein a rotating cutting device (9 to 11) having a number of knives (11) is arranged downstream of the exit die (14) in the direction of flow of the plastics melt, said knives being moved past the knife plate (13) such that the exiting plastics melt is chopped and can solidify in water to form the pellets. The knives (11) are assigned a positioning device (6 to 8, 17, 18) having a number of piston cylinder units (17), said positioning device (6 to 8, 17, 18) being fed by a common hydraulic piston (6) and adjusting the knives (11) in the axial direction with respect to the knife plate (13).
The invention relates to a device for producing polymers, preferably for processing and polycondensation of polyester, having a substantially cylindrical reactor (1), which has an inlet opening (2) on one side and an exit opening (4) on the other side and an outlet (20) for discharging gases. According to the invention, said device is developed such that the device has a compact design, and such that the device allows the use of higher-viscosity initial substances, even when generating smaller volumes, which is optimally adjustable in respect of the process conditions thereof and which represents a variable, cost-effective solution. According to the invention, the reactor (1) has a continuous, central shaft (6), on which agitating elements or agitating elements and conveying elements are arranged, the inlet opening (2) is connected to an entry extruder (3), the shaft (6) of the reactor and the shaft (6) of the entry extruder (3) form a common shaft (6), and a drive (7) for the common shaft (6) is allocated to the entry extruder (3).
The invention relates to a melt filter (1) comprising: at least one rotatable disk screen (2) which holds a screen insert (3), at least one screen insert (3) being displaceable inside the melt filter (1) by means of a drive device for the rotatable disk screen (2) in such a way that said screen insert (3) lies opposite a melt feed opening (6); and comprising a piston (13) for backflushing and/or pre-flooding. The object of the invention is to develop a melt filter such that the drive device for backflushing and/or pre-flooding is simplified. To achieve this object, the piston (13) is operatively connected to the drive device and can be driven by said drive device in order to carry out the backflushing and/or pre-flooding operation.
The invention relates to a melt filter (1), in particular for filtering plastics melts that are conducted in a melt duct, said filter comprising at least one displaceable, in particular rotatable, disk screen (2) having one or more screen inserts (3, 3', 3"), at least one screen insert (3, 3', 3") inside the melt filter (1) being displaceable in a melt flow (10) in such a way that the screen insert (3, 3', 3") lies opposite a pre-flooding opening (11) of a melt pre-flooding duct (9). The object of the invention is to develop a melt filter such that the pre-flooding operation is not dependent on the extrusion pressure and that pressure fluctuations during the replacement of a screen are minimised even with high-viscosity materials. To achieve this object, the melt pre-flooding duct (9) is connected to a drive device (8) for active mechanical pre-flooding, said device being capable of applying a pressure to the melt in the melt pre-flooding duct (9), independently of the prevailing pressure in the melt duct.
B01D 29/05 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants avec des éléments filtrants plats avec des supports
49.
METHOD FOR PRODUCING A FOAM BODY BY MEANS OF AN EXTRUSION PROCESS, AND EXTRUSION DEVICE FOR PRODUCING A FOAM BODY
A method and apparatus for producing a foamed body by extrusion is described, which allows a reduction in shear forces and local, high temperatures leading to an improved foam. The method comprises generating a plastics melt within a first extruder; feeding the plastics melt to a second extruder having an extruder screw apparatus; conveying the plastics melt through a first length sections of the extruder screw apparatus, in which the plastics melt is mixed, and second length sections of the extruder screw apparatus, in which the plastics melt is conveyed and pressure is built up in the plastics melt to reduce local temperature differences of the plastics melt, the first length sections and the second length sections being alternatingly arranged in the second extruder; conveying the plastics melt to an outlet nozzle of the second extruder; wherein the conducted plastics melt has a foaming agent and expands after having been conducted through the outlet nozzle, and wherein the pressure upstream of the second extruder is determined only by way of the rotational speed of the extruder such that pressure losses can be compensated, and wherein the first and second length sections, directly adjoin one another, such that no region of the screw is without a screw thread or screw web which extends as far as a casing of the second extruder.
B29C 44/34 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires
B29C 44/50 - Alimentation en matière à mouler dans une cavité de moulage ouverte ou sur une surface mobile, c.-à-d. pour la fabrication d'objets de longueur indéfinie par différence de pression, p. ex. par extrusion ou par pulvérisation
50.
METHOD FOR PRODUCING A FOAMED BODY BY EXTRUSION AND EXTRUSION DEVICE FOR PRODUCING A FOAMED BODY
The invention relates to a method and an extrusion device for producing a foamed body. A plastics melt is produced inside the casing of a first extruder (20). The plastics melt is conveyed to an outlet die (50) of a second extruder (40). The conveyed plastics melt has a foaming agent and expands after being fed through the outlet die (50). Before the plastics melt is fed through the outlet die, variations in temperature between different radial positions over the cross-section of the plastics melt are reduced by means of an extruder screw device which has a number of screw spindles distributed around the periphery. The plastics melt which is thus thermally homogeneous is fed through the outlet die (50).
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
B29C 44/20 - Moulage par pression interne engendrée dans la matière, p. ex. par gonflage ou par moussage pour la fabrication d'objets de longueur indéfinie
51.
METHOD FOR PRODUCING A FOAM BODY BY MEANS OF AN EXTRUSION PROCESS, AND EXTRUSION DEVICE FOR PRODUCING A FOAM BODY
The invention relates to a method for producing a foam body by means of an extrusion process. A plastic melt is generated within a casing of a first extruder (20). The plastic melt is conveyed to an outlet nozzle (50) of a second extruder (40). The conveyed plastic melt has propellants and expands after the plastic melt has been guided through the outlet nozzle (50). In first longitudinal sections of the second extruder, the plastic melt is conveyed and mixed. In second longitudinal sections of the second extruder, the plastic melt is conveyed and pressure is built up in the plastic melt. The plastic melt is conducted through first and second longitudinal sections in an alternating manner. Temperature differences between different radial positions in the cross section of the plastic melt are thereby reduced before the plastic melt is guided through the outlet nozzle, and the plastic melt which has been thermally homogenized in this manner is guided through the outlet nozzle (50). The invention further relates to an extrusion device for carrying out the method.
A method and an apparatus for operating a screening wheel filter for high-viscosity melts with pressures of > 10 bar and temperatures of > 90°C, wherein a screening wheel (1) is rotationally driven step by step, and screening inserts (2) arranged in the screening wheel (1) are successively subjected to a stream of cleaning agent produced by a cleaning agent drive (9) in a backflushing cleaning station, are to be optimized in such a way that less cleaning agent is used, better cleaning of the screening inserts takes place and a saving of energy is ensured. For this purpose it is proposed that the cleaning backflushing in the backflushing cleaning station takes place during the rotation of the screening wheel (1), wherein an open-loop or closed-loop control device (7) assigned to the cleaning agent drive (9) is used to set the amount of cleaning agent and/or the pressure of the cleaning agent and/or the flow rate of the cleaning agent in dependence on the rotational speed of the screening wheel (1) and/or in dependence on a differential pressure prevailing at the screening inserts (2) located in the melt channel (4) and the effective opening of the slot die normal to the radial is less than the distance covered by the screening wheel (1) during a driving step.
The invention relates to a method and a device for operating a screen wheel filter for highly viscous melts having pressures > 10 bar and temperatures > 90 °C which shall be further developed in such a way that less of the highly viscous melt is wasted and that the operation of the screen wheel filter can be made more economical. For this purpose the screen wheel (3) according to the invention is rotationally driven at least one complete revolution, with respect to one of the screen inserts (12) located in the melt channel (10), before the particular screen insert (12) is replaced and/or backflushed, and wherein the drive speed and drive cycling for the screen wheel (3) are set in dependence on the thermal or oxidative decomposition behavior of the particular melt in such a way that, when the particular screen insert (12) reenters the melt channel (10) of the screen wheel filter (1), the melt remaining in the particular screen insert (12) has experienced thermal decomposition or oxidative decomposition of ≤ 3% cleaved molecular chains, preferably ≤ 1% cleaved molecular chains.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Machines for the plastics industry; machines for chemical
industry; machines for the food industry; parts therefor,
included in this class. Scientific apparatus and instruments, and measuring and
checking (supervision) apparatus and instruments, included
in this class; data processing equipment and computers;
sensors for registering process parameters, included in this
class; display apparatus, included in this class.
An extruder has an intake barrel, a degassing drum connected to, downstream from, and coaxial with the intake barrel, and an output barrel connected to, downstream from, and coaxial with the intake barrel and degassing drum. A driven shaft extends through the drum and barrels and is rotated for forming a plastic melt and advancing the melt through the intake barrel, degassing drum, and output barrel. A plurality of degassing screws surround the driven shaft in the degassing drum. A screw guide rotationally fixed to the shaft has respective seats for the degassing screws. Respective drive gears rotationally fixed but removably mounted on the degassing screws are received in respective seats in a gear guide separate from the screw guide and rotationally fixed to the shaft. A ring gear is rotationally fixed but removably mounted in the degassing drum and meshes with the drive gears.
B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)
09 - Appareils et instruments scientifiques et électriques
Produits et services
Machines for the plastics industry, namely, plastic processing machines; machines for chemical industry, namely, extruders, filter machines, granulators, vacuum machines, pumps; machines for the food industry, namely, filter machines, granulators, vacuum machines, pumps; parts for machines for the plastics, chemical and food industries, namely, filters, drives, nozzles Scientific apparatus and instruments, namely, temperature indicators, temperature sensors, pressure sensors, viscosity sensors, sensors for determining electrical conductivity; measuring, and checking and supervision apparatus and instruments, namely, sensors for measuring pressure, temperature and viscosity, sensors for determining electrical conductivity; data processing equipment and computers; sensors for registering process parameters for inspecting goods manufactured in the plastics, chemical and food industries; display apparatus, namely, electronic display interfaces, liquid crystal displays, light emitting diode (LED) displays, electric luminescent display panels, large screen displays, seven segment digital displays
09 - Appareils et instruments scientifiques et électriques
Produits et services
Machines for the plastics industry; Machines for chemical industry; Machines for the food industry; Parts therefor, In class 7. Scientific apparatus and instruments, and measuring and checking (supervision) apparatus and instruments, included in class 9; Data processing equipment and computers; Sensors for registering process parameters, included in class 9; Display apparatus, included in class 9.
58.
METHOD AND DEVICE FOR PRODUCING PLASTIC MELTS PROVIDED WITH NANOPARTICLES
The invention relates to a method for producing plastic melts, which are provided with nanoparticles and conveyed in an extruder (1), wherein said method is to be developed such that the nanoparticles can be introduced in the original sizes thereof into the melt, without requiring complex comminution devices and high energy for transporting and comminuting nanoparticle clumps. For this purpose, nanoparticles are primary-shaped in a reactor (4), which is as closely associated with the extruder (1) as possible, the nanoparticles are transported from the primary shaping site out of the reactor (4) by a transport medium and introduced into the extruder (1) via a fixed connection (5), upon impingement on the melt the nanoparticles are separated from the transport medium and bond with the melt, the melt is mixed with the nanoparticles in the extruder (1), and the transport medium is conducted out of the extruder (1).
