Global Patent Index - EP 1025923 A1

EP 1025923 A1 2000-08-09 - PRODUCTION METHOD FOR DOUBLE-STRUCTURE CONTAINER

Title (en)

PRODUCTION METHOD FOR DOUBLE-STRUCTURE CONTAINER

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES BEHÄLTERS MIT DOPPEL-STRUKTUR

Title (fr)

PROCEDE DE PRODUCTION D'UN CONTENEUR A STRUCTURE DOUBLE

Publication

EP 1025923 A1 (EN)

Application

EP 99944778 A

Priority

  • JP 9905184 W
  • JP 26944798 A

Abstract (en)

In a method of producing a double-walled container having a space between an inner tube and an outer tube, in order to facilitate its production and to reduce its cost, the inner tube 4A is arranged in the outer tube 4B, with the space 4C formed therebetween, and a solid interposition material 4D is held between the tubes at least in one region of the space 4C extending in a direction of a tube axis, and in this condition, a spinning processing is applied to the outer tube 4B, thereby changing cross-sections of the inner and outer tubes 4A and 4B simultaneously. <IMAGE>

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

B21D 22/16; B21D 41/04; B21D 53/84; F01N 3/28; F01N 7/18

IPC 8 full level (invention and additional information)

B21D 22/16 (2006.01); B21D 22/14 (2006.01); B21D 22/18 (2006.01); B21D 51/18 (2006.01); B21D 53/84 (2006.01); F01N 1/02 (2006.01); F01N 3/28 (2006.01); F01N 13/08 (2010.01); F01N 13/14 (2010.01); F01N 13/18 (2010.01)

CPC (invention and additional information)

F01N 13/1872 (2013.01); B21D 22/14 (2013.01); B21D 22/18 (2013.01); F01N 1/02 (2013.01); F01N 3/2842 (2013.01); F01N 3/2885 (2013.01); F01N 13/14 (2013.01); F01N 13/18 (2013.01); F01N 2450/00 (2013.01); F01N 2470/24 (2013.01); F01N 2470/26 (2013.01); F01N 2490/155 (2013.01); F01N 2490/20 (2013.01)

Citation (search report)

See references of WO 0016924A1

Designated contracting state (EPC)

DE FR GB IT SE

EPO simple patent family

EP 1025923 A1 20000809; JP 2000094050 A 20000404; JP 2957176 B1 19991004; WO 0016924 A1 20000330

INPADOC legal status


2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

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

2002-12-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020403

2000-08-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000524

2000-08-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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