Global Patent Index - EP 1013585 A1

EP 1013585 A1 20000628 - Device for supplying web material

Title (en)

Device for supplying web material

Title (de)

Bandzuführvorrichtung

Title (fr)

Dispositif d'alimentation d'une bande

Publication

EP 1013585 A1 20000628 (EN)

Application

EP 98830783 A 19981224

Priority

EP 98830783 A 19981224

Abstract (en)

The device includes a storage unit (5 to 8) and accommodates a reserve length of the web material (W) to be supplied. A first (17) and second (9) driving means make it possible to selectively control both the speed of the web material at the intake side (2) and the speed with which the stored reserve length of web material (W) is paid out, so that the speed at which the web material (W) is supplied at the output side (3) of the device can be kept constant independently of the fact that the supply of web material (W) to the intake side (2) is either slowed down or brought to a complete halt to permit, for example, the replacement of a roll from which the web material is supplied and/or to splice two lengths of the web material (W). The operation of the driving means (9, 17) is enslaved to a control signal generated by a sensor (19 to 23) that is preferably located at the output side (3) of the device and includes a return means (19) around which there passes a loop of the web material (W) that is being supplied. The control signal is generated as a function of the slackening and the shortening of the said loop in substantial absence of longitudinal tensile stresses applied to the web material (W). <IMAGE>

IPC 1-7

B65H 23/04; B65H 20/34

IPC 8 full level

B65H 20/34 (2006.01); B65H 23/04 (2006.01)

CPC (source: EP)

B65H 20/34 (2013.01); B65H 23/042 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE IT

DOCDB simple family (publication)

EP 1013585 A1 20000628

DOCDB simple family (application)

EP 98830783 A 19981224