EP 1188671 A1 20020320 - Method and device for pre-stretching of a stretch film
Title (en)
Method and device for pre-stretching of a stretch film
Title (de)
Verfahren und Vorrichtung zum Vorstrecken einer Dehnfolie
Title (fr)
Procédé et dispositif pour pré-étirer un film étirable
Publication
Application
Priority
SE 0003298 A 20000918
Abstract (en)
In a method for pre-stretching a stretch film (1), the film (1) is caused to run on two means (3, 4), of which the front means (4) as seen in the direction of feed of the film (1) is a draw means and the rear means (3) as seen in the direction of feed of the film (1) is a brake means (3). A parameter, which is dependent on the tensile force (P) generated by the two means (3, 4) in the portion (11, 12) of the stretch film (1) that is located between said means (3, 4), is measured, and the measured value thus obtained is used to control the action of the front and rear means (3, 4) on the film (1) in such manner that said tensile force (P) is kept within a predetermined range (I). A device for pre-stretching a stretch film comprises, in addition to a draw means (4) and a brake means (3) of the type mentioned above, a measuring device (7) for measuring the above parameter as well as control means (20) for controlling the action of the draw means (4) and the brake means (3) on the film (1). <IMAGE>
IPC 1-7
IPC 8 full level
B65B 11/00 (2006.01)
CPC (source: EP)
B65B 11/00 (2013.01); B65B 2011/002 (2013.01)
Citation (applicant)
- EP 0842850 A2 19980520 - LANTECH TECHNOLOGY INVESTMENT [US]
- EP 0653352 A1 19950517 - BURTECH AB [SE]
- SE 502041 A
- SE 444660 A
Citation (search report)
- [A] US 4458467 A 19840710 - SHULMAN MICHAEL H [CA], et al
- [A] EP 0936141 A1 19990818 - HALOILA M OY AB [FI]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1188671 A1 20020320; SE 0003298 D0 20000918; SE 0003298 L 20020319; SE 518214 C2 20020910
DOCDB simple family (application)
EP 01850158 A 20010914; SE 0003298 A 20000918