EP 3683166 A1 20200722 - METHOD OF PRODUCING AT LEAST A PAIR OF INTERLOCKING ADJACENT LAYERS OF A PAPER PACKAGING PRODUCT
Title (en)
METHOD OF PRODUCING AT LEAST A PAIR OF INTERLOCKING ADJACENT LAYERS OF A PAPER PACKAGING PRODUCT
Title (de)
VERFAHREN ZUR HERSTELLUNG VON MINDESTENS EINEM PAAR INEINANDERGREIFENDER ANGRENZENDER SCHICHTEN EINES PAPIERVERPACKUNGSPRODUKTS
Title (fr)
PROCÉDÉ DE PRODUCTION D'AU MOINS UNE PAIRE DE COUCHES D'INTERVERROUILLAGE ADJACENTES D'UN PRODUIT D'EMBALLAGE EN PAPIER
Publication
Application
Priority
- US 201361874873 P 20130906
- EP 14843068 A 20140908
- US 2014054615 W 20140908
Abstract (en)
The invention relates to a method of producing at least a pair of interlocking adjacent layers of a paper packaging product, wherein each of said pair of interlocking adjacent layers is formed of an expanded sheet of slit paper, and comprises cells that include land regions that are inclined with respect to the plane of the unexpanded paper sheet. The method comprises the steps of: slitting an unexpanded paper sheet to produce slits that upon expansion, produce land regions having angles of inclination in the range 50 to 85 degrees, said step of slitting comprising slitting with "V" shaped cutting blades, wherein each cutting blade has a difference in bevel angle on the two sides of the cutting blade and produces a difference in wedge effect on the two edges of a slit, expanding said sheet of slit paper, and layering said expanded sheet on another expanded sheet, and causing the land regions of said adjacent layers of expanded sheet to interlock over substantially the entire length of the layers.
IPC 8 full level
B65D 65/02 (2006.01); B31D 3/02 (2006.01)
CPC (source: EP)
B31D 3/0223 (2013.01); B31D 3/0292 (2013.01); B65D 65/02 (2013.01); B65D 81/03 (2013.01)
Citation (applicant)
- US 201361874873 P 20130906
- US 6871480 B1 20050329 - GOODRICH DAVID P [US]
- US 5667871 A 19970916 - GOODRICH DAVID P [US], et al
- US 5688578 A 19971118 - GOODRICH DAVID P [US]
- US 5538778 A 19960723 - HURWITZ MICHAEL C [US], et al
- US 5782735 A 19980721 - GOODRICH DAVID P [US], et al
- US 5061344 A 19911029 - WEDIN IRENE KATARINA [SE], et al
- US 2014130997 A1 20140515 - KLERELID INGVAR [SE]
- US 5782753 A 19980721 - DEFONZO STEPHAN A [US], et al
- US 5699578 A 19971223 - DUMLER NORBERT [DE], et al
Citation (search report)
- [A] US 4832228 A 19890523 - HICKEY DAVID J [US]
- [A] EP 0768948 A1 19970423 - JIFFY PACKAGING CO LTD [GB]
- [A] US 5688578 A 19971118 - GOODRICH DAVID P [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)
WO 2015035335 A1 20150312; EP 3041756 A1 20160713; EP 3041756 A4 20170621; EP 3041756 B1 20200212; EP 3683166 A1 20200722
DOCDB simple family (application)
US 2014054615 W 20140908; EP 14843068 A 20140908; EP 20156524 A 20140908