EP 0152959 A3 19861022 - A PROCESS AND APPARATUS FOR MAKING A UNITARY PACKAGE BY WRAPPING A LOAD
Title (en)
A PROCESS AND APPARATUS FOR MAKING A UNITARY PACKAGE BY WRAPPING A LOAD
Publication
Application
Priority
US 58277984 A 19840223
Abstract (en)
[origin: EP0152959A2] A process and apparatus for high speed continuous film web wrapping of uniform loads, in which a first wrap is applied in a first direction transverse to the path of the moving load and a second wrap is applied in a second direction opposite the first direction. This dual wrap nullifies the disabling effects of helical wrap bias when a single wrap is applied to a moving load, and produced a longitudinal containment force after film web recovery over time on leading and trailing ends of the load. In the apparatus (30) two wrapping stations (36, 436) are provided together with a wrapping conveyor assembly (32). Each station (36, 436) includes a dispensing rig (44, 444) on which a film roll and an elongation mechanism (70, 470) are mounted. The regulation of elongation in the elongation mechanism (70, 470) and the regulation of film supply speed from the elongation mechanism (70, 470) are independent of film demand speed at the load. The film web is strechted beyond its yield point at ambient temperature.
IPC 1-7
IPC 8 full level
B65B 11/58 (2006.01)
CPC (source: EP)
B65B 11/008 (2013.01); B65B 11/58 (2013.01)
Citation (search report)
- [E] EP 0140301 A1 19850508 - HAGEMANN B & CO [DE]
- [X] DE 2303590 A1 19730809 - TRANSPAK CONSULTING AB OY
- [Y] GB 2076772 A 19811209 - LANCASTER W G, et al
- [A] GB 820866 A 19590930 - SHERIDAN SERVICE COMPANY LTD
- [A] US 3589091 A 19710629 - CLOUD CHARLES E
- [A] US 4050220 A 19770927 - LANCASTER WILLIAM G, et al
Designated contracting state (EPC)
DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0152959 A2 19850828; EP 0152959 A3 19861022; EP 0152959 B1 19900509; CA 1244751 A 19881115; DE 3577539 D1 19900613; GB 2154537 A 19850911; GB 8504585 D0 19850327
DOCDB simple family (application)
EP 85101958 A 19850222; CA 474976 A 19850222; DE 3577539 T 19850222; GB 8504585 A 19850222