EP 0504311 B1 19930728 - PROCESS FOR THE MANUFACTURE OF THICK-WALLED SHAPED ARTICLES FOR USE, IN PARTICULAR, FOR PACKAGING PURPOSES
Title (en)
PROCESS FOR THE MANUFACTURE OF THICK-WALLED SHAPED ARTICLES FOR USE, IN PARTICULAR, FOR PACKAGING PURPOSES
Publication
Application
Priority
DE 4001918 A 19900124
Abstract (en)
[origin: WO9111555A1] In the process described, the raw material, in particular recycled paper and/or waste cardboard, in the form of an aqueous suspension, is brought by a suction filter out of suspension and on to a perforated surface (3) the shape of which corresponds to that of the packaging article (VS). In order to manufacture shaped articles (VS) of this kind with sufficiently thick walls by suction filtering, the process disclosed calls for the suction effect on the raw material in the suspension to be exerted in the suction filter through spaced holes (5) in the suction surface (3) and through a bed (6), consisting of one or more layers, located directly on the suction surface. This bed, which transmits the suction effect, has mesh apertures which are smaller than the holes in the suction surface.
IPC 1-7
IPC 8 full level
D21J 7/00 (2006.01)
CPC (source: EP)
D21J 7/00 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
WO 9111555 A1 19910808; AT E92125 T1 19930815; CA 2069295 A1 19910725; DE 4001918 C1 19910404; DE 59100232 D1 19930902; DK 0504311 T3 19931018; EP 0504311 A1 19920923; EP 0504311 B1 19930728; ES 2044722 T3 19940101
DOCDB simple family (application)
DE 9100067 W 19910123; AT 91902425 T 19910123; CA 2069295 A 19910123; DE 4001918 A 19900124; DE 59100232 T 19910123; DK 91902425 T 19910123; EP 91902425 A 19910123; ES 91902425 T 19910123