EP 2689923 B1 20191009 - METHOD OF FORMING SCORE LINES ON A BLANK
Title (en)
METHOD OF FORMING SCORE LINES ON A BLANK
Title (de)
VERFAHREN ZUR ERZEUGUNG VON RILLLINIEN AUF EINEM ZUSCHNITT
Title (fr)
PROCÉDÉ DE FORMATION DE LIGNES D'ENTAILLE SUR UN FLAN
Publication
Application
Priority
JP 2011057286 W 20110325
Abstract (en)
[origin: EP2689923A1] The present invention has a blank forming step of forming a sheet-shaped resin blank (3) able to be formed into a box by folding and bending, and a score line forming step of forming score lines (7) in score line forming areas (8) of the blank (3) which are to be bent to form outer edges of the box, to extend in the direction in which the outer edges should extend. In the score line forming step, the score lines (7) are formed in a manner causing grooves (9) to be produced on the back side of each score line forming area (8), along the score lines, through plastic deformation. The blank (3) therefore does not undergo tensile stress pulling on the blank (3) to either side of each groove (9), and thus, does not undergo warping as a whole. The blank (3) thus retains its sheet shape and can be steadily supplied to a packaging machine.
IPC 8 full level
B31B 50/25 (2017.01)
CPC (source: EP US)
B65D 5/66 (2013.01 - US); B65D 85/10484 (2020.05 - EP US); B31B 50/252 (2017.07 - EP US); B31B 2100/00 (2017.07 - EP US); B31B 2100/0024 (2017.07 - EP US); B31B 2110/20 (2017.07 - EP US); B31B 2241/003 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2689923 A1 20140129; EP 2689923 A4 20150107; EP 2689923 B1 20191009; JP 5886834 B2 20160316; JP WO2012131834 A1 20140724; US 2013341380 A1 20131226; WO 2012131834 A1 20121004
DOCDB simple family (application)
EP 11862033 A 20110325; JP 2011057286 W 20110325; JP 2013506868 A 20110325; US 201314010067 A 20130826