EP 1214184 A2 20020619 - EXTRUSION HEAD FOR TUBULAR ARTICLES MADE OF PLASTIC MATERIALS
Title (en)
EXTRUSION HEAD FOR TUBULAR ARTICLES MADE OF PLASTIC MATERIALS
Title (de)
EXTRUSIONSKOPF FÜR ROHRFÖRMIGE GEGENSTÄNDE AUS KUNSTSTOFF
Title (fr)
TETE D'EXTRUDEUSE POUR ARTICLES TUBULAIRES FABRIQUES EN MATIERE PLASTIQUE
Publication
Application
Priority
- EP 0102209 W 20010226
- IT MI20000406 A 20000301
Abstract (en)
[origin: WO0164420A2] An extrusion head for tubular articles made of plastic material comprising a body with at least a first part (2) operatively associated to a flange of an extruder, a central part (3) and a terminal part (4) operatively connected to a spinneret (10) wherein said first part (2) has a plurality of ducts (6) for the passage of the material to be extruded in a fluidic state from the inside of said head (1) to the outside, said conduits (6) communicating with the outside through holes (7) associated to a corresponding number of distribution channels (8) provided in the central part (3) of said body and adjacent to a cylindrical surface of said central part (3), wherein the internal geometry of said distribution channels (8) is such that the fluid pressure distribution along lines (9) separating said channels and said cylindrical surface generates a plurality of fluidic threads, each being of the same flow rate, said fluidic threads creating a tubular homogenous article on the terminal part (4) of said head (1).
IPC 1-7
IPC 8 full level
B29C 48/05 (2019.01); B29C 48/09 (2019.01); B29C 48/32 (2019.01)
CPC (source: EP US)
B29C 48/05 (2019.01 - EP US); B29C 48/09 (2019.01 - EP US); B29C 48/32 (2019.01 - EP US); B29C 48/705 (2019.01 - EP US); B29C 48/08 (2019.01 - EP US)
Citation (search report)
See references of WO 0164420A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0164420 A2 20010907; WO 0164420 A3 20011227; AU 5825401 A 20010912; EP 1214184 A2 20020619; IT 1316700 B1 20030424; IT MI20000406 A0 20000301; IT MI20000406 A1 20010903
DOCDB simple family (application)
EP 0102209 W 20010226; AU 5825401 A 20010226; EP 01931485 A 20010226; IT MI20000406 A 20000301