EP 0697949 A1 19960228 - METHOD FOR MAKING A POROUS TUBE, POROUS TUBE THEREBY OBTAINED, AND USE THEREOF IN IRRIGATION

Title (en)

METHOD FOR MAKING A POROUS TUBE, POROUS TUBE THEREBY OBTAINED, AND USE THEREOF IN IRRIGATION

Title (de)

VERFAHREN ZUR HERSTELLUNG VON PORÖSEN ROHREN, DARAUS GEWONNENE PORÖSE ROHRE UND VERWENDUNG VON DIESEN ROHREN ALS TROPFBEWÄSSERUNGSLEITUNGEN

Title (fr)

PROCEDE DE FABRICATION D'UN TUYAU POREUX, TUYAU POREUX OBTENU PAR LEDIT PROCEDE ET UTILISATION D'UN TEL TUYAU EN IRRIGATION

Publication

EP 0697949 A1 19960228 (FR)

Application

EP 95909845 A 19950220

Priority

FR 9500195 W 19950220
FR 9402320 A 19940301

Abstract (en)

[origin: WO9523681A1] A method for making a porous tube for use in irrigation, wherein (a) a uniform mixture (21) of vulcanised rubber particles and a thermoplastic binder is prepared; (b) the mixture (21) is fed through an extruder (30) and heated therein; (c) the mixture (21) is drawn out of the extruder (30) through a die (44) at a linear extrusion speed V1 to form a tube (23); (d) the tube (23) from the die (44) is immersed in a cooling bath (35) in which a percentage linear contraction Ct is caused in the tube (23); (e) the tube (23) from the cooling bath (35) is fed between two feed rollers (27, 28) at a linear withdrawal speed V2; and (f) the tube from the feed rollers (27, 28) is wound onto a spool (25); V1, V2 and Ct being determined by the equation (100-Ct) < 100 V2/V1 < 120.

IPC 1-7

B29C 47/34; B29C 47/00

IPC 8 full level

A01G 25/06 (2006.01); B29C 48/09 (2019.01); B29C 48/355 (2019.01)

CPC (source: EP)

A01G 25/06 (2013.01); B29C 48/09 (2019.01); B29C 48/355 (2019.01); B29C 48/0012 (2019.01); B29K 2105/04 (2013.01); B29L 2023/003 (2013.01)

Citation (search report)

See references of WO 9523681A1

Designated contracting state (EPC)

AT BE CH DE DK ES GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9523681 A1 19950908; AU 1815995 A 19950918; DE 697949 T1 19981022; EP 0697949 A1 19960228; ES 2116949 T1 19980801; FR 2716835 A1 19950908; FR 2716835 B1 19960426; IL 112790 A0 19950526; IL 112790 A 19970713; OA 10241 A 19970919

DOCDB simple family (application)

FR 9500195 W 19950220; AU 1815995 A 19950220; DE 95909845 T 19950220; EP 95909845 A 19950220; ES 95909845 T 19950220; FR 9402320 A 19940301; IL 11279095 A 19950226; OA 60730 A 19951101