Global Patent Index - EP 1044095 A1

EP 1044095 A1 2000-10-18 - PROCESS AND DEVICE FOR THE EXTRUSION OF POLYMERS WITH HIGH PERCENTAGE OF INERT MATERIALS

Title (en)

PROCESS AND DEVICE FOR THE EXTRUSION OF POLYMERS WITH HIGH PERCENTAGE OF INERT MATERIALS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR EXTRUSION VON KUNSTSTOFFEN MIT EINEM HOHEN PROZENTGEHALT AN INERTEN MATERIALIEN

Title (fr)

METHODE D'EXTRUSION DE POLYMERES A FORT POURCENTAGE DE MATERIAUX INERTES ET APPAREIL A CET EFFET

Publication

EP 1044095 A1 (EN)

Application

EP 99944298 A

Priority

  • EP 9905376 W
  • IT GE980081 A

Abstract (en)

[origin: WO0018561A1] Process for the extrusion of polymers with a high percentage of inert materials; being meant with such an expression percentages from 35-40 % by weight to 70-80 % by weight on the total, including the stages of: feeding of precisely measured amounts of the components and the additives in axially distanced points of a screw mixer; intimate mixing of said components and their extrusion through the extrusion head of said mixer. Said process is carried out through a device including an extruder (1) for the transformation of a mixture consisting of at least one polymer, an inert material and one or more additives such as lubricants, stabilizers or else, means (2, 3, 4) (2, 3, 4) for the ensiling of each of said mixture components, devices (21, 31, 41) for the continuous weighing of each of said components and means (6, 8, 9) for the feeding of said components. Such feeding means (6, 8, 9) are positioned in prearranged points along the extruder (1) according to the composition of the mixture to be transformed.

IPC 1-7 (main, further and additional classification)

B29C 47/10; B29C 47/00

IPC 8 full level (invention and additional information)

B29C 47/00 (2006.01); B29C 47/10 (2006.01)

CPC (invention and additional information)

B29C 47/0004 (2013.01); B29C 47/1045 (2013.01); B29C 47/1063 (2013.01); B29C 47/0009 (2013.01); B29C 47/1081 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/06 (2013.01)

Citation (search report)

See references of WO 0018561A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0018561 A1 20000406; AU 5728899 A 20000417; BR 9907134 A 20001003; CA 2316228 A1 20000406; EP 1044095 A1 20001018; HR P20000438 A2 20000831; HU 0102876 A2 20011128; HU 0102876 A3 20020128; IL 136449 D0 20010614; IT 1314160 B1 20021204; IT GE980081 A1 20000330; PL 340796 A1 20010226; TN SN99182 A1 20030403; TR 200002171 T1 20001121

INPADOC legal status


2004-09-15 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040316

2003-12-17 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20031103

2000-10-18 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000628

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE