EP 0874727 A1 19981104 - METHOD OF PRODUCING A HOLLOW BODY FOR HIGH INTERNAL OR EXTERNAL PRESSURE

Title (en)

METHOD OF PRODUCING A HOLLOW BODY FOR HIGH INTERNAL OR EXTERNAL PRESSURE

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES HOHLKÖRPERS FÜR HOHEN INNEN- ODER AUSSENDRUCK

Title (fr)

PROCEDE DE PRODUCTION D'UN CORPS CREUX POUR PRESSION INTERIEURE OU EXTERIEURE ELEVEE

Publication

EP 0874727 A1 19981104 (DE)

Application

EP 97914067 A 19970119

Priority

DE 9700081 W 19970119
DE 19601761 A 19960119

Abstract (en)

[origin: DE19601761A1] The invention concerns a method of producing a hollow body (1) having at least one opening (3) for high internal or external pressure. According to the invention, a preform (6) of metal or in particular of plastics is expanded by a high internal pressure to form an inner container (4) and externally, under high internal pressure, is optionally sheathed, extrusion-coated, dipped or lapped. The internal pressure is so high that during sheathing, extrusion-coating, dipping or lapping the inner container (4) is not deformed at all or only slightly.

IPC 1-7

B29C 69/02; B29D 22/00

IPC 8 full level

B21D 51/24 (2006.01); B29C 69/02 (2006.01); B29C 70/44 (2006.01); B29D 22/00 (2006.01); F17C 1/16 (2006.01); B29C 41/14 (2006.01); B29C 45/00 (2006.01); B29C 49/00 (2006.01); B29C 49/06 (2006.01); B29C 53/56 (2006.01)

CPC (source: EP)

Citation (search report)

See references of WO 9726128A1

Designated contracting state (EPC)

DE ES FR GB IT SE

DOCDB simple family (publication)

DE 19601761 A1 19970731; AU 2148897 A 19970811; EP 0874727 A1 19981104; WO 9726128 A1 19970724

DOCDB simple family (application)

DE 19601761 A 19960119; AU 2148897 A 19970119; DE 9700081 W 19970119; EP 97914067 A 19970119