Title (en)

EXTRUSION HEAD FOR EXPANDED PLASTIC TUBES

Title (de)

EXTRUSIONSDÜSE FÜR SCHAUMKUNSTSTOFFROHREN

Title (fr)

TETE D'EXTRUSION POUR TUBES EN MATIERE PLASTIQUE EXPANSEE

Publication

EP 1299221 A1 20030409 (FR)

Application

EP 01945285 A 20010619

Priority

• EP 0106950 W 20010619
• FR 0008111 A 20000622

Abstract (en)

[origin: WO0198057A1] The invention concerns an extrusion head for making tubes comprising at least an plastic layer expanded by extruding a flow of melted plastic material comprising an expansion agent through an annular passage section provided in the extrusion head and wherein the melted plastic material flow comprising the expansion agent is circumferentially distributed and is welded on itself by recombination of the two fronts of the flow, said extrusion head being provided with a specific heat regulating device enabling to heat or cool the melted plastic material comprising the expansion agent after the flow fronts have been recombined.

IPC 1-7

B29C 47/06; B29C 47/28; B29C 47/86; B29C 47/92; B29C 47/94

IPC 8 full level

B29C 47/06 (2006.01); B29C 47/28 (2006.01); B29C 47/86 (2006.01); B29C 47/92 (2006.01); B29C 47/94 (2006.01); B29C 48/09 (2019.01); B29C 48/34 (2019.01); B29C 48/92 (2019.01); B29C 48/95 (2019.01)

CPC (source: EP US)

B29C 48/09 (2019.01 - EP US); B29C 48/21 (2019.01 - EP US); B29C 48/336 (2019.01 - EP US); B29C 48/34 (2019.01 - EP US); B29C 48/86 (2019.01 - EP US); B29C 48/865 (2019.01 - EP US); B29C 48/87 (2019.01 - EP US); B29C 48/92 (2019.01 - EP US); B29C 48/10 (2019.01 - EP US); B29C 48/3003 (2019.01 - EP US); B29C 48/335 (2019.01 - EP US); B29C 48/95 (2019.01 - EP US); B29C 2948/92209 (2019.01 - EP US); B29C 2948/92314 (2019.01 - EP US); B29C 2948/92409 (2019.01 - EP US); B29C 2948/92704 (2019.01 - EP US); B29C 2948/92809 (2019.01 - EP US); B29C 2948/92904 (2019.01 - EP US); B29K 2105/04 (2013.01 - EP US)

Citation (search report)

See references of WO 0198057A1

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 0198057 A1 20011227; AU 6754501 A 20020102; EP 1299221 A1 20030409; FR 2810577 A1 20011228; FR 2810577 B1 20030207; US 2003164569 A1 20030904; US 7008577 B2 20060307

DOCDB simple family (application)

EP 0106950 W 20010619; AU 6754501 A 20010619; EP 01945285 A 20010619; FR 0008111 A 20000622; US 31203802 A 20021223