Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1997-09-30
1999-09-07
Gerrity, Stephen F.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493203, 493235, 493239, B31B 164, B31B 4904
Patent
active
059478829
ABSTRACT:
An apparatus for making bags out of a thermoplastic web has a transport unit for feeding a leading end of the web in a transport direction to a cutting/welding station, tools at the station for transversely welding the web and cutting a bag from the leading end of the web, and a device downstream in the direction from the station for stacking and blocking bags cut from the web. A bag-pulling device between the station and the stacker/blocker has an endless drive strand having a pair of stretches extending vertically across a path of the bag between the station and the stacker/blocker and respective horizontally extending deflector rollers carried on the stretches, vertically displaceable therewith, each extending along a respective axis, and each having an outer surface engageable with the web and freely rotatable about the respective axis. A drive can oppositely displace the stretches of the strands and thereby bring the surfaces of the rollers into engagement with opposite faces of the bag so that the bag rolls off the surfaces as the rollers are oppositely displaced without substantial relative movement between the bag and the surface.
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Dubno Herbert
Gerrity Stephen F.
Lemo Maschinenbau GmbH
Weierstall Eric J.
Wilford Andrew
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