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1. DE102012004166 - Ringspaltdüse sowie Verfahren zur Extrusion

Office
Germany
Application Number 102012004166
Application Date 05.03.2012
Publication Number 102012004166
Publication Date 05.09.2013
Publication Kind B4
IPC
B29C 47/22
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
47Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
08Component parts, details or accessories; Auxiliary operations
12Extrusion nozzles or dies
20with annular opening, e.g. for tubular articles
22adjustable
B29C 49/04
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
02Combined blow-moulding and manufacture of the preform or the parison
04Extrusion blow-moulding
CPC
B29C 48/09
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
03characterised by the shape of the extruded material at extrusion
09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
B29C 48/10
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
03characterised by the shape of the extruded material at extrusion
09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
10flexible, e.g. blown foils
B29C 48/12
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
03characterised by the shape of the extruded material at extrusion
12Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
B29C 48/13
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
03characterised by the shape of the extruded material at extrusion
13Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
B29C 48/30
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
30Extrusion nozzles or dies
B29C 48/327
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
30Extrusion nozzles or dies
32with annular openings, e.g. for forming tubular articles
325being; adjustable ; , i.e. having adjustable exit sections
327with centering means
Applicants KAUTEX TEXTRON GmbH & Co. KG
Inventors Froitzheim Thomas
Eckhardt Joachim
Schenkel David
Agents Kierdorf Ritschel Richly Patentanwälte PartG mbB
Title
(DE) Ringspaltdüse sowie Verfahren zur Extrusion
Abstract
(DE)

Ringspaltdüse (1) an einem Extrusionskopf zur Herstellung von schlauchförmigen oder bahnförmigen Vorformlingen mit einem bogenförmigen Düsenaustrittsspalt, mit einem von einem Dorn (2) und einem Düsenkörper (3) begrenzten Schmelzekanal (4), wobei das Querschnittsprofil des Schmelzekanals (4) über Stellelemente veränderbar ist, dadurch gekennzeichnet, dass der Umfang des Schmelzekanals (4) wenigstens teilweise unmittelbar von wenigstens einem radial verstellbaren Schieber (5) begrenzt wird, dass der Schieber (5) durch mehrere Segmente (5a, 5b, 5c) gebildet wird, die gemeinsam von wenigstens einer ersten Lage in wenigstens eine zweite Lage verstellbar sind und dass die Segmente (5a, 5b, 5c) in jeder Lage einen jeweils geschlossenen Bogenabschnitt der Begrenzung des Schmelzekanals (4) bilden, wobei der Radius des Bogenabschnitts je nach Lage der Segmente (5a, 5b, 5c) verschieden ist.