Devices for distending tubes supplied in the flattened state

Full Title

Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages > Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs > the preformed tubular webs being supplied in a flattened state > Devices for distending tubes supplied in the flattened state