Global patent index - EP 1021288 A2

EP 1021288 A2 2000-07-26 - APPARATUS AND METHOD FOR COEXTRUDING MATERIALS AT DIFFERENT TEMPERATURES

Title (en)

APPARATUS AND METHOD FOR COEXTRUDING MATERIALS AT DIFFERENT TEMPERATURES

Title (de)

VORRICHTUNG UND VERFAHREN ZUM KOEXTRUDIEREN VON MATERIALIEN MIT UNTERSCHIEDLICHER TEMPERATUR

Title (fr)

APPAREIL ET PROCEDE DE COEXTRUSION DE MATIERES A DES TEMPERATURES DIFFERENTES

Publication

EP 1021288 A2 (EN)

Application

EP 98950505 A

Priority

  • DE 19744515 A
  • NL 9800580 W
  • NL 1009521 A

Abstract (en)

[origin: WO9858528A2] The invention relates to an apparatus for coextruding polymers at different temperatures comprising at least two extruders, wherein the extruders are connected to a coextrusion head which comprises an insulation zone, and at least one of a cooling zone and a heating zone and wherein a removable die/dieholder-combination is mounted to the coextrusion head. The invention also relates to a method for coextruding two or more polymers at different temperatures by shaping the polymers independently of one another, until the moment they meet at the vicinity of the die-frontplate, where the polymers are brought together and a coextrudate is formed.

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

B29C 47/00

IPC 8 full level (invention and additional information)

C08J 9/04 (2006.01); B29C 47/04 (2006.01); B29C 47/06 (2006.01); B29C 47/56 (2006.01); B29C 47/78 (2006.01); B29C 47/86 (2006.01); B29K 7/00 (2006.01); B29K 9/00 (2006.01); B29K 9/06 (2006.01); B29K 19/00 (2006.01); B29K 23/00 (2006.01); B29K 105/04 (2006.01); B29K 105/24 (2006.01); B29L 9/00 (2006.01)

CPC (invention and additional information)

B29C 47/0007 (2013.01); B29C 47/06 (2013.01); B29C 47/56 (2013.01); B29C 47/86 (2013.01); B29C 47/862 (2013.01); B29C 47/864 (2013.01); B29C 47/0019 (2013.01); B29C 47/0023 (2013.01); B29C 47/003 (2013.01)

Citation (search report)

See references of WO 9858528A3

Designated contracting state (EPC)

DE ES FR GB IT NL SE

EPO simple patent family

WO 9858528 A2 19981230; WO 9858528 A3 19990401; AU 9652398 A 19990104; EP 1021288 A2 20000726; JP 2002530232 A 20020917

INPADOC legal status

2002-08-14 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020103

2001-08-08 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010622

2000-08-02 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Ref Legal Event Code: RBV

- Designated State(s): DE ES FR GB IT NL SE

2000-07-26 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000316

2000-07-26 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT NL SE