EP 0132191 B1 19880907 - METHOD OF REINFORCING CARDBOARD BOXES
Title (en)
METHOD OF REINFORCING CARDBOARD BOXES
Publication
Application
Priority
FR 8312039 A 19830718
Abstract (en)
[origin: EP0132191A2] 1. Method for the production of a presentation box of high mechanical strenght and substantial rigidity from a (1) progrooved or prescored blank of a cardboard of small thickness able to be printed by an offset method, and to be grooved or scored according to mechanical or high-frequency methods, characterized in that it consists in selectively reinforcing the parts (25 to 29) of the blank (1) which are not traversed by a grooved or scored line (6 to 8 and 16 to 22), in such a manner that non-reinforced parts enabling subsequent forming to shape of the box are situated at either side of the different grooved or scored lines (6 to 8 and 16 to 22), which reinforcement consists in impregnating the entire surface of the cardboard (1) blank with a hardenable polymerisable resin and in exposing only the parts which are to be reinforced (25 to 29) to a high-frequency treatment thereby producing a localised polymerisation and hardening of the impregnating resin.
IPC 1-7
IPC 8 full level
CPC (source: EP)
B65D 5/445 (2013.01); B65D 5/56 (2013.01)
Citation (examination)
- US 1569952 A 19260119 - DICKINSON JR WILLIAM W
- US 1480809 A 19240115 - LABOMBARDE ELIE W
- US 2556915 A 19510612 - REYNOLDS GUYER
- US 3653578 A 19720404 - WOOD ROBERT N
- US 4337887 A 19820706 - GERARD THOMAS J, et al
Designated contracting state (EPC)
AT BE CH DE GB IT LI NL SE
DOCDB simple family (publication)
EP 0132191 A2 19850123; EP 0132191 A3 19860129; EP 0132191 B1 19880907; AT E37003 T1 19880915; DE 3473865 D1 19881013; FR 2553028 A1 19850412; FR 2553028 B1 19881216
DOCDB simple family (application)
EP 84401449 A 19840706; AT 84401449 T 19840706; DE 3473865 T 19840706; FR 8312039 A 19830718