EP 0390774 B1 19920715 - HIGH SPEED CURTAIN COATING PROCESS AND APPARATUS
Title (en)
HIGH SPEED CURTAIN COATING PROCESS AND APPARATUS
Publication
Application
Priority
US 8703190 W 19871203
Abstract (en)
[origin: WO8905477A1] In a process of curtain coating, the use of very high coating speeds is facilitated by application to the surface of the object to be coated of a predetermined high level of electrostatic polar charge. The level of charge which is effective to promote the desired uniformity of coating with minimum formation of coating defects is directly related to the coating speed, so that increasingly higher levels of charge are needed as coating speed is increased. The process is particularly useful for coating photographic materials, such as multi-layer photographic films and papers.
IPC 1-7
IPC 8 full level
B05C 5/00 (2006.01); B05D 1/30 (2006.01); B65H 23/188 (2006.01); G03C 1/74 (2006.01)
CPC (source: EP)
B65H 23/188 (2013.01); G03C 1/74 (2013.01); B65H 2301/3112 (2013.01); G03C 1/915 (2013.01); G03C 2001/7433 (2013.01)
Citation (examination)
US 3508947 A 19700428 - HUGHES DONALD J
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
WO 8905477 A1 19890615; DE 3780472 D1 19920820; DE 3780472 T2 19930311; EP 0390774 A1 19901010; EP 0390774 B1 19920715; JP 2509316 B2 19960619; JP H03501702 A 19910418
DOCDB simple family (application)
US 8703190 W 19871203; DE 3780472 T 19871203; EP 88900199 A 19871203; JP 50049088 A 19871203