EP 0703427 A1 19960327 - Process for producing roll-bonded pannels
Title (en)
Process for producing roll-bonded pannels
Title (de)
Verfahren zur Herstellung von Platten durch Aufblähung
Title (fr)
Procédé pour la fabrication par gonflage de panneaux
Publication
Application
Priority
EP 94114865 A 19940921
Abstract (en)
A roll-bonded panel 1 has a fluid circuit including a U-shaped shunt passage 2 which comprises first and second shunt passageways 4, 5 parallel to each other and branching from a main passage 3, and a curved passageway 6 interconnecting the forward ends of the shunt passageways 4, 5. A pattern of parting agent corresponding to the circuit is so printed that the width W2 of a nonbonded portion for forming the second shunt passageway 5 is slightly smaller than the width W1 of a nonbonded portion for forming the first shunt passageway 4. When air of high pressure is introduced into the nonbonded portion, the main passage 3 is formed first by inflation, and the shunt passage 2 is then formed. The shunt passage is formed in the order of the first passageway 4, the curved passageway 6 and the second passageway 5. This obviates the likelihood of the portion of curved passageway 6 rupturing. <IMAGE>
IPC 1-7
IPC 8 full level
B21D 53/04 (2006.01); F25B 39/02 (2006.01); F28F 3/14 (2006.01)
CPC (source: EP)
B21D 53/045 (2013.01); F25B 39/024 (2013.01); F28F 3/14 (2013.01)
Citation (search report)
- [A] DE 3443797 A1 19850613 - CEGEDUR [FR]
- [A] US 2874942 A 19590224 - RIEPPEL PERRY J, et al
- [A] US 3334398 A 19670808 - MIDDLETON VERNE L
- [A] PATENT ABSTRACTS OF JAPAN vol. 13, no. 305 (M - 849) 13 July 1989 (1989-07-13)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0703427 A1 19960327; EP 0703427 B1 19990728; AT E182673 T1 19990815; DE 69419754 D1 19990902; DE 69419754 T2 20000210
DOCDB simple family (application)
EP 94114865 A 19940921; AT 94114865 T 19940921; DE 69419754 T 19940921