Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020108939 - EXTRUDER SCREW, EXTRUSION DEVICE HAVING AN EXTRUDER SCREW AND METHOD FOR PLASTICIZING A PLASTIC

Publication Number WO/2020/108939
Publication Date 04.06.2020
International Application No. PCT/EP2019/080469
International Filing Date 07.11.2019
IPC
B29C 48/395 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
395using screws surrounded by a cooperating barrel, e.g. single screw extruders
B29C 48/505 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
50Details of extruders
505Screws
B29C 48/53 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
50Details of extruders
505Screws
53having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
CPC
B29B 7/428
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
30continuous, with mechanical mixing or kneading devices
34with movable mixing or kneading devices
38rotary
40with single shaft
42with screw or helix
428Parts or accessories, e.g. casings, feeding or discharging means
B29C 48/395
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
395using screws surrounded by a cooperating barrel, e.g. single screw extruders
B29C 48/505
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
50Details of extruders
505Screws
B29C 48/53
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
50Details of extruders
505Screws
53having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
B29C 48/565
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
50Details of extruders
505Screws
565having projections other than the thread, e.g. pins
B29C 48/575
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
50Details of extruders
505Screws
575provided with elements of a generally circular cross-section for shearing the melt, i.e. shear-ring elements
Applicants
  • KRAUSSMAFFEI TECHNOLOGIES GMBH [DE]/[DE]
Inventors
  • SKRABALA, Otto
  • ROIDER, Stephan
Agents
  • ROIDER, Stephan
Priority Data
10 2018 009 308.627.11.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) EXTRUDERSCHNECKE, EXTRUSIONSVORRICHTUNG MIT EXTRUDERSCHNECKE SOWIE VERFAHREN ZUM PLASTIFIZIEREN EINES KUNSTSTOFFES
(EN) EXTRUDER SCREW, EXTRUSION DEVICE HAVING AN EXTRUDER SCREW AND METHOD FOR PLASTICIZING A PLASTIC
(FR) VIS D'EXTRUSION, DISPOSITIF D'EXTRUSION DOTÉ D'UNE VIS D'EXTRUSION ET PROCÉDÉ DE PLASTIFICATION D'UNE MATIÈRE PLASTIQUE
Abstract
(DE)
Die Erfindung betrifft eine Extruderschnecke (1) zum Plastifizieren von zumindest einem Kunststoff oder einem Kunststoffgemisch, mit einer Aufschmelzzone (2), einer Wellenzone (3) sowie einer zwischen der Aufschmelzzone (2) und der Wellenzone (3) angeordneten Mischzone (4), wobei in der Aufschmelzzone (2) sowie in der Wellenzone (3) ein sich helixartig entlang einer Schneckenlängsachse erstreckender Fördersteg (5, 6) ausgebildet ist, wobei ein Fördersteg (5) der Aufschmelzzone (2) an einem der Mischzone (4) zugewandten Ende (7) der Aufschmelzzone (2) endet und ein Fördersteg (6) der Wellenzone (3) an einem der Mischzone (4) zugewandten Ende (8) beginnt und wobei eine Gangtiefe der Aufschmelzzone (2) entlang der Schneckenlängsachse zu der Mischzone (4) hin zumindest abschnittsweise kontinuierlich zunimmt. Auch betrifft die Erfindung eine Extrusionsvorrichtung mit dieser Extruderschnecke (1) sowie ein Verfahren zum Plastifizieren zumindest eines Kunststoffs oder eines Kunststoffgemisches.
(EN)
The invention relates to an extruder screw (1) for plasticizing at least one plastic or plastic mixture, comprising a melting zone (2), a shaft zone (3) and a mixing zone (4) arranged between the melting zone (2) and the shaft zone (3), wherein a conveying flight (5, 6) is formed in the melting zone (2) and in the shaft zone (3), which extends helically along a longitudinal axis of the screw, wherein a conveying flight (5) of the melting zone (2) ends at an end (7) of the melting zone (2) towards the mixing zone (4) and a conveying flight (6) of the shaft zone (3) begins at an end (8) towards the mixing zone (4). A flight depth of the melting zone (2) continuously decreases along the longitudinal axis of the screw to the mixing zone (4). The invention also relates to an extrusion device having said extruder screw (1) and to a method for plasticizing at least one plastic or plastic mixture.
(FR)
L'invention concerne une vis d'extrusion (1) servant à plastifier au moins une matière plastique ou un mélange de matières plastiques, comportant une zone de fusion (2), une zone ondulée (3) et une zone de mélange (4) située entre la zone de fusion (2) et la zone ondulée (3). Selon l'invention, un filet de transport (5, 6) s'étendant en hélice le long d'un axe longitudinal de vis est formé dans la zone de fusion (2) et dans la zone ondulée (3), un filet de transport (5) de la zone de fusion (2) se terminant à une extrémité (7) de la zone de fusion (2) orientée vers la zone de mélange (4) et un filet de transport (6) de la zone ondulée (3) commençant à une extrémité (8) orientée vers la zone de mélange (4). Une profondeur de filet de la zone de fusion (2) augmente de façon continue par tronçons le long de l'axe longitudinal de vis en direction de la zone de mélange (4). L'invention concerne également un dispositif d'extrusion doté de cette vis d'extrusion (1) et un procédé de plastification d'au moins une matière plastique ou d'un mélange de matières plastiques.
Also published as
Latest bibliographic data on file with the International Bureau