EP 0448524 A3 19911113 - METHOD FOR MAKING FIBRE BOX-LIKE CONTAINERS AND RELATED COVERS, AND CONTAINERS MADE THEREBY
Title (en)
METHOD FOR MAKING FIBRE BOX-LIKE CONTAINERS AND RELATED COVERS, AND CONTAINERS MADE THEREBY
Publication
Application
Priority
IT 1971590 A 19900319
Abstract (en)
[origin: EP0448524A2] The present invention relates to a method for making fibre-box like containers and related covers, which comprises the steps of making a tubular body, (1) including superimposed sheets of a paper material, and stretching this tubular body by rollers (2) arranged at corner portions thereof, in order to cause the tubular body to assume a substantially parallelepipedal shape. The main feature of the invention is that the method further comprises the steps of: deforming, by a mold, (11,21) an axial end of the tubular body, so as to provide a substantially parallel edge band recessed with respect to the side surface of the tubular body, inwardly bending the corner regions in order to remove the material excess and, finally forming a cover having the same peripheral extension as the box-like body. <IMAGE>
IPC 1-7
IPC 8 full level
B31B 1/74 (2006.01); B31B 17/00 (2006.01); B31F 1/00 (2006.01); B31F 7/00 (2006.01)
CPC (source: EP US)
B31C 11/02 (2013.01 - EP); B31F 1/0038 (2013.01 - EP); B31F 1/008 (2013.01 - EP US); B31F 7/002 (2013.01 - EP); B31B 50/252 (2017.08 - EP); B31B 50/28 (2017.08 - EP); B31B 50/594 (2018.05 - EP); B31B 50/81 (2017.08 - EP); B31B 2105/00 (2017.08 - EP); B31B 2105/001 (2017.08 - EP); B31B 2105/002 (2017.08 - EP US); B31B 2105/0022 (2017.08 - EP); B31B 2120/002 (2017.08 - EP); B31B 2120/10 (2017.08 - EP); B31B 2120/502 (2017.08 - EP)
Citation (search report)
- [XP] FR 2645119 A1 19901005 - HANSJORG FASSLER [CH]
- [Y] US 2892749 A 19590630 - CARPENTER HERBERT L
- [Y] DE 518981 C 19310221 - MAX STAHR
- [Y] US 4292787 A 19811006 - BUSCHOR JOSEF J, et al
- [A] DE 644209 C 19370429 - JAGENBERG WERKE AG
- [A] US 2380462 A 19450731 - PETERS JOHN F
- [A] BE 847921 A 19770301
- [A] GB 123823 A 19190307 - FORD THOMAS
- [A] FR 453414 A 19130607 - EUGENE VAN DOREN [BE]
- [A] GB 511844 A 19390825 - CELLULOID CORP
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR LI NL SE
DOCDB simple family (publication)
EP 0448524 A2 19910925; EP 0448524 A3 19911113; IT 1239458 B 19931102; IT 9019715 A0 19900319; IT 9019715 A1 19910919
DOCDB simple family (application)
EP 91830089 A 19910312; IT 1971590 A 19900319